From 975304100a700d24d1c09b288060a66b1d55c360 Mon Sep 17 00:00:00 2001
From: Rob Herring <robh@kernel.org>
Date: Mon, 24 Jun 2019 15:56:44 -0600
Subject: dt-bindings: display: Convert tpo,tpg110 panel to DT schema

Convert the tpo,tpg110 panel binding to DT schema.

Cc: Thierry Reding <thierry.reding@gmail.com>
Cc: Sam Ravnborg <sam@ravnborg.org>
Cc: Maxime Ripard <maxime.ripard@bootlin.com>
Cc: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Cc: dri-devel@lists.freedesktop.org
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Rob Herring <robh@kernel.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20190624215649.8939-11-robh@kernel.org
---
 MAINTAINERS | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

(limited to 'MAINTAINERS')

diff --git a/MAINTAINERS b/MAINTAINERS
index 2abf6d28db64..88d84f5e8669 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -5156,7 +5156,7 @@ M:	Linus Walleij <linus.walleij@linaro.org>
 T:	git git://anongit.freedesktop.org/drm/drm-misc
 S:	Maintained
 F:	drivers/gpu/drm/panel/panel-tpo-tpg110.c
-F:	Documentation/devicetree/bindings/display/panel/tpo,tpg110.txt
+F:	Documentation/devicetree/bindings/display/panel/tpo,tpg110.yaml
 
 DRM DRIVER FOR USB DISPLAYLINK VIDEO ADAPTERS
 M:	Dave Airlie <airlied@redhat.com>
-- 
cgit v1.2.3


From 719bda751e183477e8fd21cb9b3942fd579cf5b3 Mon Sep 17 00:00:00 2001
From: Neil Armstrong <narmstrong@baylibre.com>
Date: Mon, 24 Jun 2019 11:08:51 +0200
Subject: MAINTAINERS: Update Maintainers and Reviewers of DRM Bridge Drivers
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

Add myself as co-maintainer of DRM Bridge Drivers then add Jonas Karlman
and Jernej Škrabec as Reviewers of DRM Bridge Drivers.

Cc: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Cc: Jonas Karlman <jonas@kwiboo.se>
Cc: Andrzej Hajda <a.hajda@samsung.com>
Cc: Jernej Škrabec <jernej.skrabec@siol.net>
Cc: Daniel Vetter <daniel@ffwll.ch>
Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>
Reviewed-by: Jernej Skrabec <jernej.skrabec@siol.net>
Reviewed-by: Jonas Karlman <jonas@kwiboo.se>
Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Andrzej Hajda <a.hajda@samsung.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190624090851.17859-1-narmstrong@baylibre.com
---
 MAINTAINERS | 3 +++
 1 file changed, 3 insertions(+)

(limited to 'MAINTAINERS')

diff --git a/MAINTAINERS b/MAINTAINERS
index 88d84f5e8669..780a57c2e14c 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -5253,7 +5253,10 @@ T:	git git://anongit.freedesktop.org/drm/drm-misc
 
 DRM DRIVERS FOR BRIDGE CHIPS
 M:	Andrzej Hajda <a.hajda@samsung.com>
+M:	Neil Armstrong <narmstrong@baylibre.com>
 R:	Laurent Pinchart <Laurent.pinchart@ideasonboard.com>
+R:	Jonas Karlman <jonas@kwiboo.se>
+R:	Jernej Skrabec <jernej.skrabec@siol.net>
 S:	Maintained
 T:	git git://anongit.freedesktop.org/drm/drm-misc
 F:	drivers/gpu/drm/bridge/
-- 
cgit v1.2.3


From f63df31d2dddf418a3c0bacaa292a38faaccdcd9 Mon Sep 17 00:00:00 2001
From: Robert Chiras <robert.chiras@nxp.com>
Date: Wed, 26 Jun 2019 15:08:27 +0300
Subject: drm/panel: Add support for Raydium RM67191 panel driver

This patch adds Raydium RM67191 TFT LCD panel driver (MIPI-DSI
protocol).

Signed-off-by: Robert Chiras <robert.chiras@nxp.com>
Reviewed-by: Sam Ravnborg <sam@ravnborg.org>
Reviewed-by: Fabio Estevam <festevam@gmail.com>
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Link: https://patchwork.freedesktop.org/patch/msgid/1561550907-9733-3-git-send-email-robert.chiras@nxp.com
---
 MAINTAINERS                                   |   6 +
 drivers/gpu/drm/panel/Kconfig                 |   9 +
 drivers/gpu/drm/panel/Makefile                |   1 +
 drivers/gpu/drm/panel/panel-raydium-rm67191.c | 668 ++++++++++++++++++++++++++
 4 files changed, 684 insertions(+)
 create mode 100644 drivers/gpu/drm/panel/panel-raydium-rm67191.c

(limited to 'MAINTAINERS')

diff --git a/MAINTAINERS b/MAINTAINERS
index 780a57c2e14c..7289525c1896 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -5101,6 +5101,12 @@ S:	Maintained
 F:	drivers/gpu/drm/qxl/
 F:	include/uapi/drm/qxl_drm.h
 
+DRM DRIVER FOR RAYDIUM RM67191 PANELS
+M:	Robert Chiras <robert.chiras@nxp.com>
+S:	Maintained
+F:	drivers/gpu/drm/panel/panel-raydium-rm67191.c
+F:	Documentation/devicetree/bindings/display/panel/raydium,rm67191.txt
+
 DRM DRIVER FOR RAGE 128 VIDEO CARDS
 S:	Orphan / Obsolete
 F:	drivers/gpu/drm/r128/
diff --git a/drivers/gpu/drm/panel/Kconfig b/drivers/gpu/drm/panel/Kconfig
index 17959876621f..eaecd40cc32e 100644
--- a/drivers/gpu/drm/panel/Kconfig
+++ b/drivers/gpu/drm/panel/Kconfig
@@ -168,6 +168,15 @@ config DRM_PANEL_RASPBERRYPI_TOUCHSCREEN
 	  Pi 7" Touchscreen.  To compile this driver as a module,
 	  choose M here.
 
+config DRM_PANEL_RAYDIUM_RM67191
+	tristate "Raydium RM67191 FHD 1080x1920 DSI video mode panel"
+	depends on OF
+	depends on DRM_MIPI_DSI
+	depends on BACKLIGHT_CLASS_DEVICE
+	help
+	  Say Y here if you want to enable support for Raydium RM67191 FHD
+	  (1080x1920) DSI panel.
+
 config DRM_PANEL_RAYDIUM_RM68200
 	tristate "Raydium RM68200 720x1280 DSI video mode panel"
 	depends on OF
diff --git a/drivers/gpu/drm/panel/Makefile b/drivers/gpu/drm/panel/Makefile
index f8709d280d61..62dae45f8f74 100644
--- a/drivers/gpu/drm/panel/Makefile
+++ b/drivers/gpu/drm/panel/Makefile
@@ -15,6 +15,7 @@ obj-$(CONFIG_DRM_PANEL_ORISETECH_OTM8009A) += panel-orisetech-otm8009a.o
 obj-$(CONFIG_DRM_PANEL_OSD_OSD101T2587_53TS) += panel-osd-osd101t2587-53ts.o
 obj-$(CONFIG_DRM_PANEL_PANASONIC_VVX10F034N00) += panel-panasonic-vvx10f034n00.o
 obj-$(CONFIG_DRM_PANEL_RASPBERRYPI_TOUCHSCREEN) += panel-raspberrypi-touchscreen.o
+obj-$(CONFIG_DRM_PANEL_RAYDIUM_RM67191) += panel-raydium-rm67191.o
 obj-$(CONFIG_DRM_PANEL_RAYDIUM_RM68200) += panel-raydium-rm68200.o
 obj-$(CONFIG_DRM_PANEL_ROCKTECH_JH057N00900) += panel-rocktech-jh057n00900.o
 obj-$(CONFIG_DRM_PANEL_RONBO_RB070D30) += panel-ronbo-rb070d30.o
diff --git a/drivers/gpu/drm/panel/panel-raydium-rm67191.c b/drivers/gpu/drm/panel/panel-raydium-rm67191.c
new file mode 100644
index 000000000000..6a5d37006103
--- /dev/null
+++ b/drivers/gpu/drm/panel/panel-raydium-rm67191.c
@@ -0,0 +1,668 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Raydium RM67191 MIPI-DSI panel driver
+ *
+ * Copyright 2019 NXP
+ */
+
+#include <linux/backlight.h>
+#include <linux/delay.h>
+#include <linux/gpio/consumer.h>
+#include <linux/module.h>
+#include <linux/of.h>
+#include <linux/regulator/consumer.h>
+
+#include <video/mipi_display.h>
+#include <video/of_videomode.h>
+#include <video/videomode.h>
+
+#include <drm/drm_crtc.h>
+#include <drm/drm_mipi_dsi.h>
+#include <drm/drm_panel.h>
+#include <drm/drm_print.h>
+
+/* Panel specific color-format bits */
+#define COL_FMT_16BPP 0x55
+#define COL_FMT_18BPP 0x66
+#define COL_FMT_24BPP 0x77
+
+/* Write Manufacture Command Set Control */
+#define WRMAUCCTR 0xFE
+
+/* Manufacturer Command Set pages (CMD2) */
+struct cmd_set_entry {
+	u8 cmd;
+	u8 param;
+};
+
+/*
+ * There is no description in the Reference Manual about these commands.
+ * We received them from vendor, so just use them as is.
+ */
+static const struct cmd_set_entry manufacturer_cmd_set[] = {
+	{0xFE, 0x0B},
+	{0x28, 0x40},
+	{0x29, 0x4F},
+	{0xFE, 0x0E},
+	{0x4B, 0x00},
+	{0x4C, 0x0F},
+	{0x4D, 0x20},
+	{0x4E, 0x40},
+	{0x4F, 0x60},
+	{0x50, 0xA0},
+	{0x51, 0xC0},
+	{0x52, 0xE0},
+	{0x53, 0xFF},
+	{0xFE, 0x0D},
+	{0x18, 0x08},
+	{0x42, 0x00},
+	{0x08, 0x41},
+	{0x46, 0x02},
+	{0x72, 0x09},
+	{0xFE, 0x0A},
+	{0x24, 0x17},
+	{0x04, 0x07},
+	{0x1A, 0x0C},
+	{0x0F, 0x44},
+	{0xFE, 0x04},
+	{0x00, 0x0C},
+	{0x05, 0x08},
+	{0x06, 0x08},
+	{0x08, 0x08},
+	{0x09, 0x08},
+	{0x0A, 0xE6},
+	{0x0B, 0x8C},
+	{0x1A, 0x12},
+	{0x1E, 0xE0},
+	{0x29, 0x93},
+	{0x2A, 0x93},
+	{0x2F, 0x02},
+	{0x31, 0x02},
+	{0x33, 0x05},
+	{0x37, 0x2D},
+	{0x38, 0x2D},
+	{0x3A, 0x1E},
+	{0x3B, 0x1E},
+	{0x3D, 0x27},
+	{0x3F, 0x80},
+	{0x40, 0x40},
+	{0x41, 0xE0},
+	{0x4F, 0x2F},
+	{0x50, 0x1E},
+	{0xFE, 0x06},
+	{0x00, 0xCC},
+	{0x05, 0x05},
+	{0x07, 0xA2},
+	{0x08, 0xCC},
+	{0x0D, 0x03},
+	{0x0F, 0xA2},
+	{0x32, 0xCC},
+	{0x37, 0x05},
+	{0x39, 0x83},
+	{0x3A, 0xCC},
+	{0x41, 0x04},
+	{0x43, 0x83},
+	{0x44, 0xCC},
+	{0x49, 0x05},
+	{0x4B, 0xA2},
+	{0x4C, 0xCC},
+	{0x51, 0x03},
+	{0x53, 0xA2},
+	{0x75, 0xCC},
+	{0x7A, 0x03},
+	{0x7C, 0x83},
+	{0x7D, 0xCC},
+	{0x82, 0x02},
+	{0x84, 0x83},
+	{0x85, 0xEC},
+	{0x86, 0x0F},
+	{0x87, 0xFF},
+	{0x88, 0x00},
+	{0x8A, 0x02},
+	{0x8C, 0xA2},
+	{0x8D, 0xEA},
+	{0x8E, 0x01},
+	{0x8F, 0xE8},
+	{0xFE, 0x06},
+	{0x90, 0x0A},
+	{0x92, 0x06},
+	{0x93, 0xA0},
+	{0x94, 0xA8},
+	{0x95, 0xEC},
+	{0x96, 0x0F},
+	{0x97, 0xFF},
+	{0x98, 0x00},
+	{0x9A, 0x02},
+	{0x9C, 0xA2},
+	{0xAC, 0x04},
+	{0xFE, 0x06},
+	{0xB1, 0x12},
+	{0xB2, 0x17},
+	{0xB3, 0x17},
+	{0xB4, 0x17},
+	{0xB5, 0x17},
+	{0xB6, 0x11},
+	{0xB7, 0x08},
+	{0xB8, 0x09},
+	{0xB9, 0x06},
+	{0xBA, 0x07},
+	{0xBB, 0x17},
+	{0xBC, 0x17},
+	{0xBD, 0x17},
+	{0xBE, 0x17},
+	{0xBF, 0x17},
+	{0xC0, 0x17},
+	{0xC1, 0x17},
+	{0xC2, 0x17},
+	{0xC3, 0x17},
+	{0xC4, 0x0F},
+	{0xC5, 0x0E},
+	{0xC6, 0x00},
+	{0xC7, 0x01},
+	{0xC8, 0x10},
+	{0xFE, 0x06},
+	{0x95, 0xEC},
+	{0x8D, 0xEE},
+	{0x44, 0xEC},
+	{0x4C, 0xEC},
+	{0x32, 0xEC},
+	{0x3A, 0xEC},
+	{0x7D, 0xEC},
+	{0x75, 0xEC},
+	{0x00, 0xEC},
+	{0x08, 0xEC},
+	{0x85, 0xEC},
+	{0xA6, 0x21},
+	{0xA7, 0x05},
+	{0xA9, 0x06},
+	{0x82, 0x06},
+	{0x41, 0x06},
+	{0x7A, 0x07},
+	{0x37, 0x07},
+	{0x05, 0x06},
+	{0x49, 0x06},
+	{0x0D, 0x04},
+	{0x51, 0x04},
+};
+
+static const u32 rad_bus_formats[] = {
+	MEDIA_BUS_FMT_RGB888_1X24,
+	MEDIA_BUS_FMT_RGB666_1X18,
+	MEDIA_BUS_FMT_RGB565_1X16,
+};
+
+static const u32 rad_bus_flags = DRM_BUS_FLAG_DE_LOW |
+				 DRM_BUS_FLAG_PIXDATA_NEGEDGE;
+
+struct rad_panel {
+	struct drm_panel panel;
+	struct mipi_dsi_device *dsi;
+
+	struct gpio_desc *reset;
+	struct backlight_device *backlight;
+
+	struct regulator_bulk_data *supplies;
+	unsigned int num_supplies;
+
+	bool prepared;
+	bool enabled;
+};
+
+static const struct drm_display_mode default_mode = {
+	.clock = 132000,
+	.hdisplay = 1080,
+	.hsync_start = 1080 + 20,
+	.hsync_end = 1080 + 20 + 2,
+	.htotal = 1080 + 20 + 2 + 34,
+	.vdisplay = 1920,
+	.vsync_start = 1920 + 10,
+	.vsync_end = 1920 + 10 + 2,
+	.vtotal = 1920 + 10 + 2 + 4,
+	.vrefresh = 60,
+	.width_mm = 68,
+	.height_mm = 121,
+	.flags = DRM_MODE_FLAG_NHSYNC |
+		 DRM_MODE_FLAG_NVSYNC,
+};
+
+static inline struct rad_panel *to_rad_panel(struct drm_panel *panel)
+{
+	return container_of(panel, struct rad_panel, panel);
+}
+
+static int rad_panel_push_cmd_list(struct mipi_dsi_device *dsi)
+{
+	size_t i;
+	size_t count = ARRAY_SIZE(manufacturer_cmd_set);
+	int ret = 0;
+
+	for (i = 0; i < count; i++) {
+		const struct cmd_set_entry *entry = &manufacturer_cmd_set[i];
+		u8 buffer[2] = { entry->cmd, entry->param };
+
+		ret = mipi_dsi_generic_write(dsi, &buffer, sizeof(buffer));
+		if (ret < 0)
+			return ret;
+	}
+
+	return ret;
+};
+
+static int color_format_from_dsi_format(enum mipi_dsi_pixel_format format)
+{
+	switch (format) {
+	case MIPI_DSI_FMT_RGB565:
+		return COL_FMT_16BPP;
+	case MIPI_DSI_FMT_RGB666:
+	case MIPI_DSI_FMT_RGB666_PACKED:
+		return COL_FMT_18BPP;
+	case MIPI_DSI_FMT_RGB888:
+		return COL_FMT_24BPP;
+	default:
+		return COL_FMT_24BPP; /* for backward compatibility */
+	}
+};
+
+static int rad_panel_prepare(struct drm_panel *panel)
+{
+	struct rad_panel *rad = to_rad_panel(panel);
+	int ret;
+
+	if (rad->prepared)
+		return 0;
+
+	ret = regulator_bulk_enable(rad->num_supplies, rad->supplies);
+	if (ret)
+		return ret;
+
+	if (rad->reset) {
+		gpiod_set_value_cansleep(rad->reset, 1);
+		usleep_range(3000, 5000);
+		gpiod_set_value_cansleep(rad->reset, 0);
+		usleep_range(18000, 20000);
+	}
+
+	rad->prepared = true;
+
+	return 0;
+}
+
+static int rad_panel_unprepare(struct drm_panel *panel)
+{
+	struct rad_panel *rad = to_rad_panel(panel);
+	int ret;
+
+	if (!rad->prepared)
+		return 0;
+
+	/*
+	 * Right after asserting the reset, we need to release it, so that the
+	 * touch driver can have an active connection with the touch controller
+	 * even after the display is turned off.
+	 */
+	if (rad->reset) {
+		gpiod_set_value_cansleep(rad->reset, 1);
+		usleep_range(15000, 17000);
+		gpiod_set_value_cansleep(rad->reset, 0);
+	}
+
+	ret = regulator_bulk_disable(rad->num_supplies, rad->supplies);
+	if (ret)
+		return ret;
+
+	rad->prepared = false;
+
+	return 0;
+}
+
+static int rad_panel_enable(struct drm_panel *panel)
+{
+	struct rad_panel *rad = to_rad_panel(panel);
+	struct mipi_dsi_device *dsi = rad->dsi;
+	struct device *dev = &dsi->dev;
+	int color_format = color_format_from_dsi_format(dsi->format);
+	int ret;
+
+	if (rad->enabled)
+		return 0;
+
+	dsi->mode_flags |= MIPI_DSI_MODE_LPM;
+
+	ret = rad_panel_push_cmd_list(dsi);
+	if (ret < 0) {
+		DRM_DEV_ERROR(dev, "Failed to send MCS (%d)\n", ret);
+		goto fail;
+	}
+
+	/* Select User Command Set table (CMD1) */
+	ret = mipi_dsi_generic_write(dsi, (u8[]){ WRMAUCCTR, 0x00 }, 2);
+	if (ret < 0)
+		goto fail;
+
+	/* Software reset */
+	ret = mipi_dsi_dcs_soft_reset(dsi);
+	if (ret < 0) {
+		DRM_DEV_ERROR(dev, "Failed to do Software Reset (%d)\n", ret);
+		goto fail;
+	}
+
+	usleep_range(15000, 17000);
+
+	/* Set DSI mode */
+	ret = mipi_dsi_generic_write(dsi, (u8[]){ 0xC2, 0x0B }, 2);
+	if (ret < 0) {
+		DRM_DEV_ERROR(dev, "Failed to set DSI mode (%d)\n", ret);
+		goto fail;
+	}
+	/* Set tear ON */
+	ret = mipi_dsi_dcs_set_tear_on(dsi, MIPI_DSI_DCS_TEAR_MODE_VBLANK);
+	if (ret < 0) {
+		DRM_DEV_ERROR(dev, "Failed to set tear ON (%d)\n", ret);
+		goto fail;
+	}
+	/* Set tear scanline */
+	ret = mipi_dsi_dcs_set_tear_scanline(dsi, 0x380);
+	if (ret < 0) {
+		DRM_DEV_ERROR(dev, "Failed to set tear scanline (%d)\n", ret);
+		goto fail;
+	}
+	/* Set pixel format */
+	ret = mipi_dsi_dcs_set_pixel_format(dsi, color_format);
+	DRM_DEV_DEBUG_DRIVER(dev, "Interface color format set to 0x%x\n",
+			     color_format);
+	if (ret < 0) {
+		DRM_DEV_ERROR(dev, "Failed to set pixel format (%d)\n", ret);
+		goto fail;
+	}
+	/* Exit sleep mode */
+	ret = mipi_dsi_dcs_exit_sleep_mode(dsi);
+	if (ret < 0) {
+		DRM_DEV_ERROR(dev, "Failed to exit sleep mode (%d)\n", ret);
+		goto fail;
+	}
+
+	usleep_range(5000, 7000);
+
+	ret = mipi_dsi_dcs_set_display_on(dsi);
+	if (ret < 0) {
+		DRM_DEV_ERROR(dev, "Failed to set display ON (%d)\n", ret);
+		goto fail;
+	}
+
+	backlight_enable(rad->backlight);
+
+	rad->enabled = true;
+
+	return 0;
+
+fail:
+	gpiod_set_value_cansleep(rad->reset, 1);
+
+	return ret;
+}
+
+static int rad_panel_disable(struct drm_panel *panel)
+{
+	struct rad_panel *rad = to_rad_panel(panel);
+	struct mipi_dsi_device *dsi = rad->dsi;
+	struct device *dev = &dsi->dev;
+	int ret;
+
+	if (!rad->enabled)
+		return 0;
+
+	dsi->mode_flags |= MIPI_DSI_MODE_LPM;
+
+	backlight_disable(rad->backlight);
+
+	usleep_range(10000, 12000);
+
+	ret = mipi_dsi_dcs_set_display_off(dsi);
+	if (ret < 0) {
+		DRM_DEV_ERROR(dev, "Failed to set display OFF (%d)\n", ret);
+		return ret;
+	}
+
+	usleep_range(5000, 10000);
+
+	ret = mipi_dsi_dcs_enter_sleep_mode(dsi);
+	if (ret < 0) {
+		DRM_DEV_ERROR(dev, "Failed to enter sleep mode (%d)\n", ret);
+		return ret;
+	}
+
+	rad->enabled = false;
+
+	return 0;
+}
+
+static int rad_panel_get_modes(struct drm_panel *panel)
+{
+	struct drm_connector *connector = panel->connector;
+	struct drm_display_mode *mode;
+
+	mode = drm_mode_duplicate(panel->drm, &default_mode);
+	if (!mode) {
+		DRM_DEV_ERROR(panel->dev, "failed to add mode %ux%ux@%u\n",
+			      default_mode.hdisplay, default_mode.vdisplay,
+			      default_mode.vrefresh);
+		return -ENOMEM;
+	}
+
+	drm_mode_set_name(mode);
+	mode->type = DRM_MODE_TYPE_DRIVER | DRM_MODE_TYPE_PREFERRED;
+	drm_mode_probed_add(panel->connector, mode);
+
+	connector->display_info.width_mm = mode->width_mm;
+	connector->display_info.height_mm = mode->height_mm;
+	connector->display_info.bus_flags = rad_bus_flags;
+
+	drm_display_info_set_bus_formats(&connector->display_info,
+					 rad_bus_formats,
+					 ARRAY_SIZE(rad_bus_formats));
+	return 1;
+}
+
+static int rad_bl_get_brightness(struct backlight_device *bl)
+{
+	struct mipi_dsi_device *dsi = bl_get_data(bl);
+	struct rad_panel *rad = mipi_dsi_get_drvdata(dsi);
+	u16 brightness;
+	int ret;
+
+	if (!rad->prepared)
+		return 0;
+
+	dsi->mode_flags &= ~MIPI_DSI_MODE_LPM;
+
+	ret = mipi_dsi_dcs_get_display_brightness(dsi, &brightness);
+	if (ret < 0)
+		return ret;
+
+	bl->props.brightness = brightness;
+
+	return brightness & 0xff;
+}
+
+static int rad_bl_update_status(struct backlight_device *bl)
+{
+	struct mipi_dsi_device *dsi = bl_get_data(bl);
+	struct rad_panel *rad = mipi_dsi_get_drvdata(dsi);
+	int ret = 0;
+
+	if (!rad->prepared)
+		return 0;
+
+	dsi->mode_flags &= ~MIPI_DSI_MODE_LPM;
+
+	ret = mipi_dsi_dcs_set_display_brightness(dsi, bl->props.brightness);
+	if (ret < 0)
+		return ret;
+
+	return 0;
+}
+
+static const struct backlight_ops rad_bl_ops = {
+	.update_status = rad_bl_update_status,
+	.get_brightness = rad_bl_get_brightness,
+};
+
+static const struct drm_panel_funcs rad_panel_funcs = {
+	.prepare = rad_panel_prepare,
+	.unprepare = rad_panel_unprepare,
+	.enable = rad_panel_enable,
+	.disable = rad_panel_disable,
+	.get_modes = rad_panel_get_modes,
+};
+
+static const char * const rad_supply_names[] = {
+	"v3p3",
+	"v1p8",
+};
+
+static int rad_init_regulators(struct rad_panel *rad)
+{
+	struct device *dev = &rad->dsi->dev;
+	int i;
+
+	rad->num_supplies = ARRAY_SIZE(rad_supply_names);
+	rad->supplies = devm_kcalloc(dev, rad->num_supplies,
+				     sizeof(*rad->supplies), GFP_KERNEL);
+	if (!rad->supplies)
+		return -ENOMEM;
+
+	for (i = 0; i < rad->num_supplies; i++)
+		rad->supplies[i].supply = rad_supply_names[i];
+
+	return devm_regulator_bulk_get(dev, rad->num_supplies, rad->supplies);
+};
+
+static int rad_panel_probe(struct mipi_dsi_device *dsi)
+{
+	struct device *dev = &dsi->dev;
+	struct device_node *np = dev->of_node;
+	struct rad_panel *panel;
+	struct backlight_properties bl_props;
+	int ret;
+	u32 video_mode;
+
+	panel = devm_kzalloc(&dsi->dev, sizeof(*panel), GFP_KERNEL);
+	if (!panel)
+		return -ENOMEM;
+
+	mipi_dsi_set_drvdata(dsi, panel);
+
+	panel->dsi = dsi;
+
+	dsi->format = MIPI_DSI_FMT_RGB888;
+	dsi->mode_flags =  MIPI_DSI_MODE_VIDEO_HSE | MIPI_DSI_MODE_VIDEO |
+			   MIPI_DSI_CLOCK_NON_CONTINUOUS;
+
+	ret = of_property_read_u32(np, "video-mode", &video_mode);
+	if (!ret) {
+		switch (video_mode) {
+		case 0:
+			/* burst mode */
+			dsi->mode_flags |= MIPI_DSI_MODE_VIDEO_BURST;
+			break;
+		case 1:
+			/* non-burst mode with sync event */
+			break;
+		case 2:
+			/* non-burst mode with sync pulse */
+			dsi->mode_flags |= MIPI_DSI_MODE_VIDEO_SYNC_PULSE;
+			break;
+		default:
+			dev_warn(dev, "invalid video mode %d\n", video_mode);
+			break;
+		}
+	}
+
+	ret = of_property_read_u32(np, "dsi-lanes", &dsi->lanes);
+	if (ret) {
+		dev_err(dev, "Failed to get dsi-lanes property (%d)\n", ret);
+		return ret;
+	}
+
+	panel->reset = devm_gpiod_get_optional(dev, "reset", GPIOD_OUT_LOW);
+	if (IS_ERR(panel->reset))
+		return PTR_ERR(panel->reset);
+
+	memset(&bl_props, 0, sizeof(bl_props));
+	bl_props.type = BACKLIGHT_RAW;
+	bl_props.brightness = 255;
+	bl_props.max_brightness = 255;
+
+	panel->backlight = devm_backlight_device_register(dev, dev_name(dev),
+							  dev, dsi, &rad_bl_ops,
+							  &bl_props);
+	if (IS_ERR(panel->backlight)) {
+		ret = PTR_ERR(panel->backlight);
+		dev_err(dev, "Failed to register backlight (%d)\n", ret);
+		return ret;
+	}
+
+	ret = rad_init_regulators(panel);
+	if (ret)
+		return ret;
+
+	drm_panel_init(&panel->panel);
+	panel->panel.funcs = &rad_panel_funcs;
+	panel->panel.dev = dev;
+	dev_set_drvdata(dev, panel);
+
+	ret = drm_panel_add(&panel->panel);
+	if (ret)
+		return ret;
+
+	ret = mipi_dsi_attach(dsi);
+	if (ret)
+		drm_panel_remove(&panel->panel);
+
+	return ret;
+}
+
+static int rad_panel_remove(struct mipi_dsi_device *dsi)
+{
+	struct rad_panel *rad = mipi_dsi_get_drvdata(dsi);
+	struct device *dev = &dsi->dev;
+	int ret;
+
+	ret = mipi_dsi_detach(dsi);
+	if (ret)
+		DRM_DEV_ERROR(dev, "Failed to detach from host (%d)\n",
+			      ret);
+
+	drm_panel_remove(&rad->panel);
+
+	return 0;
+}
+
+static void rad_panel_shutdown(struct mipi_dsi_device *dsi)
+{
+	struct rad_panel *rad = mipi_dsi_get_drvdata(dsi);
+
+	rad_panel_disable(&rad->panel);
+	rad_panel_unprepare(&rad->panel);
+}
+
+static const struct of_device_id rad_of_match[] = {
+	{ .compatible = "raydium,rm67191", },
+	{ /* sentinel */ }
+};
+MODULE_DEVICE_TABLE(of, rad_of_match);
+
+static struct mipi_dsi_driver rad_panel_driver = {
+	.driver = {
+		.name = "panel-raydium-rm67191",
+		.of_match_table = rad_of_match,
+	},
+	.probe = rad_panel_probe,
+	.remove = rad_panel_remove,
+	.shutdown = rad_panel_shutdown,
+};
+module_mipi_dsi_driver(rad_panel_driver);
+
+MODULE_AUTHOR("Robert Chiras <robert.chiras@nxp.com>");
+MODULE_DESCRIPTION("DRM Driver for Raydium RM67191 MIPI DSI panel");
+MODULE_LICENSE("GPL v2");
-- 
cgit v1.2.3


From 60ba34c6a5b399fb398e61cd6daa7753426165c4 Mon Sep 17 00:00:00 2001
From: Guido Günther <agx@sigxcpu.org>
Date: Wed, 26 Jun 2019 12:37:48 +0200
Subject: MAINTAINERS: Add Purism mail alias as reviewer for their devkit's
 panel
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

Add a mail alias as reviewer for the rocktech jh057n00900 panel driver.

Signed-off-by: Guido Günther <agx@sigxcpu.org>
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Link: https://patchwork.freedesktop.org/patch/msgid/a392758c914d436ec5e449980f619bc906c3054a.1561542477.git.agx@sigxcpu.org
---
 MAINTAINERS | 1 +
 1 file changed, 1 insertion(+)

(limited to 'MAINTAINERS')

diff --git a/MAINTAINERS b/MAINTAINERS
index 7289525c1896..515a81fdb7d6 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -5114,6 +5114,7 @@ F:	include/uapi/drm/r128_drm.h
 
 DRM DRIVER FOR ROCKTECH JH057N00900 PANELS
 M:	Guido Günther <agx@sigxcpu.org>
+R:	Purism Kernel Team <kernel@puri.sm>
 S:	Maintained
 F:	drivers/gpu/drm/panel/panel-rocktech-jh057n00900.c
 F:	Documentation/devicetree/bindings/display/panel/rocktech,jh057n00900.txt
-- 
cgit v1.2.3


From 59634388d93248e4f34ae35a4f3e4b49193ca502 Mon Sep 17 00:00:00 2001
From: Sam Ravnborg <sam@ravnborg.org>
Date: Thu, 27 Jun 2019 23:16:43 +0200
Subject: MAINTAINERS: add Sam Ravnborg for drm/atmel_hlcdc

I have agreed with Boris Brezillon that we will share the
maintainer role for the drm/atmel_hlcdc driver.
Nicolas Ferre from Microchip has donated a few boards that
allows me to test things - thanks!

Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Acked-by: Boris Brezillon <bbrezillon@kernel.org>
Acked-by: Nicolas Ferre <nicolas.ferre@microchip.com>
Cc: Alexandre Belloni <alexandre.belloni@bootlin.com>
Cc: Claudiu Beznea <claudiu.beznea@microchip.com>
Cc: Peter Rosin <peda@axentia.se>
Link: https://patchwork.freedesktop.org/patch/msgid/20190627211643.GA19853@ravnborg.org
---
 MAINTAINERS | 1 +
 1 file changed, 1 insertion(+)

(limited to 'MAINTAINERS')

diff --git a/MAINTAINERS b/MAINTAINERS
index 515a81fdb7d6..0a76716874bd 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -5251,6 +5251,7 @@ F:	Documentation/gpu/meson.rst
 T:	git git://anongit.freedesktop.org/drm/drm-misc
 
 DRM DRIVERS FOR ATMEL HLCDC
+M:	Sam Ravnborg <sam@ravnborg.org>
 M:	Boris Brezillon <bbrezillon@kernel.org>
 L:	dri-devel@lists.freedesktop.org
 S:	Supported
-- 
cgit v1.2.3


From e4f86e43716443e934d705952902d40de0fa9a05 Mon Sep 17 00:00:00 2001
From: Hans de Goede <hdegoede@redhat.com>
Date: Sun, 21 Jul 2019 15:25:25 +0200
Subject: drm: Add Grain Media GM12U320 driver v2
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

Add a modesetting driver for Grain Media GM12U320 based devices
(primarily Acer C120 projector, but there may be compatible devices).

This is based on the fb driver from Viacheslav Nurmekhamitov:
https://github.com/slavrn/gm12u320

This driver uses drm_simple_display_pipe to deal with all the atomic
stuff, gem_shmem_helper functions for buffer management and
drm_fbdev_generic_setup for fbdev emulation, so that leaves the driver
itself with only the actual code for talking to the gm12u320 chip,
leading to a nice simple and clean driver.

Changes in v2:
-Add drm-misc tree to MAINTAINERS
-Drop mode_config.preferred_depth = 24 / fix fbdev support

Reviewed-by: Noralf Trønnes <noralf@tronnes.org>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190721132525.10396-1-hdegoede@redhat.com
---
 MAINTAINERS                         |   6 +
 drivers/gpu/drm/Kconfig             |   2 +
 drivers/gpu/drm/Makefile            |   1 +
 drivers/gpu/drm/gm12u320/Kconfig    |   9 +
 drivers/gpu/drm/gm12u320/Makefile   |   2 +
 drivers/gpu/drm/gm12u320/gm12u320.c | 814 ++++++++++++++++++++++++++++++++++++
 6 files changed, 834 insertions(+)
 create mode 100644 drivers/gpu/drm/gm12u320/Kconfig
 create mode 100644 drivers/gpu/drm/gm12u320/Makefile
 create mode 100644 drivers/gpu/drm/gm12u320/gm12u320.c

(limited to 'MAINTAINERS')

diff --git a/MAINTAINERS b/MAINTAINERS
index 0a76716874bd..53779dca27e6 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -5015,6 +5015,12 @@ S:	Maintained
 F:	drivers/gpu/drm/panel/panel-feiyang-fy07024di26a30d.c
 F:	Documentation/devicetree/bindings/display/panel/feiyang,fy07024di26a30d.txt
 
+DRM DRIVER FOR GRAIN MEDIA GM12U320 PROJECTORS
+M:	Hans de Goede <hdegoede@redhat.com>
+T:	git git://anongit.freedesktop.org/drm/drm-misc
+S:	Maintained
+F:	drivers/gpu/drm/gm12u320/
+
 DRM DRIVER FOR ILITEK ILI9225 PANELS
 M:	David Lechner <david@lechnology.com>
 S:	Maintained
diff --git a/drivers/gpu/drm/Kconfig b/drivers/gpu/drm/Kconfig
index b9362b4f6353..0a0bb0ad8f35 100644
--- a/drivers/gpu/drm/Kconfig
+++ b/drivers/gpu/drm/Kconfig
@@ -354,6 +354,8 @@ source "drivers/gpu/drm/aspeed/Kconfig"
 
 source "drivers/gpu/drm/mcde/Kconfig"
 
+source "drivers/gpu/drm/gm12u320/Kconfig"
+
 # Keep legacy drivers last
 
 menuconfig DRM_LEGACY
diff --git a/drivers/gpu/drm/Makefile b/drivers/gpu/drm/Makefile
index 9f0d2ee35794..9728900fb3a2 100644
--- a/drivers/gpu/drm/Makefile
+++ b/drivers/gpu/drm/Makefile
@@ -120,3 +120,4 @@ obj-$(CONFIG_DRM_LIMA)  += lima/
 obj-$(CONFIG_DRM_PANFROST) += panfrost/
 obj-$(CONFIG_DRM_ASPEED_GFX) += aspeed/
 obj-$(CONFIG_DRM_MCDE) += mcde/
+obj-$(CONFIG_DRM_GM12U320) += gm12u320/
diff --git a/drivers/gpu/drm/gm12u320/Kconfig b/drivers/gpu/drm/gm12u320/Kconfig
new file mode 100644
index 000000000000..0882a61c04d5
--- /dev/null
+++ b/drivers/gpu/drm/gm12u320/Kconfig
@@ -0,0 +1,9 @@
+# SPDX-License-Identifier: GPL-2.0+
+config DRM_GM12U320
+	tristate "GM12U320 driver for USB projectors"
+	depends on DRM && USB
+	select DRM_KMS_HELPER
+	select DRM_GEM_SHMEM_HELPER
+	help
+	 This is a KMS driver for projectors which use the GM12U320 chipset
+	 for video transfer over USB2/3, such as the Acer C120 mini projector.
diff --git a/drivers/gpu/drm/gm12u320/Makefile b/drivers/gpu/drm/gm12u320/Makefile
new file mode 100644
index 000000000000..ea514382f00d
--- /dev/null
+++ b/drivers/gpu/drm/gm12u320/Makefile
@@ -0,0 +1,2 @@
+# SPDX-License-Identifier: GPL-2.0+
+obj-$(CONFIG_DRM_GM12U320) += gm12u320.o
diff --git a/drivers/gpu/drm/gm12u320/gm12u320.c b/drivers/gpu/drm/gm12u320/gm12u320.c
new file mode 100644
index 000000000000..b6f47b8cf240
--- /dev/null
+++ b/drivers/gpu/drm/gm12u320/gm12u320.c
@@ -0,0 +1,814 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Copyright 2019 Hans de Goede <hdegoede@redhat.com>
+ */
+
+#include <linux/dma-buf.h>
+#include <linux/module.h>
+#include <linux/usb.h>
+
+#include <drm/drm_atomic_helper.h>
+#include <drm/drm_atomic_state_helper.h>
+#include <drm/drm_connector.h>
+#include <drm/drm_damage_helper.h>
+#include <drm/drm_drv.h>
+#include <drm/drm_fb_helper.h>
+#include <drm/drm_file.h>
+#include <drm/drm_format_helper.h>
+#include <drm/drm_fourcc.h>
+#include <drm/drm_gem_shmem_helper.h>
+#include <drm/drm_gem_framebuffer_helper.h>
+#include <drm/drm_ioctl.h>
+#include <drm/drm_modeset_helper_vtables.h>
+#include <drm/drm_probe_helper.h>
+#include <drm/drm_simple_kms_helper.h>
+#include <drm/drm_vblank.h>
+
+static bool eco_mode;
+module_param(eco_mode, bool, 0644);
+MODULE_PARM_DESC(eco_mode, "Turn on Eco mode (less bright, more silent)");
+
+#define DRIVER_NAME		"gm12u320"
+#define DRIVER_DESC		"Grain Media GM12U320 USB projector display"
+#define DRIVER_DATE		"2019"
+#define DRIVER_MAJOR		1
+#define DRIVER_MINOR		0
+#define DRIVER_PATCHLEVEL	1
+
+/*
+ * The DLP has an actual width of 854 pixels, but that is not a multiple
+ * of 8, breaking things left and right, so we export a width of 848.
+ */
+#define GM12U320_USER_WIDTH		848
+#define GM12U320_REAL_WIDTH		854
+#define GM12U320_HEIGHT			480
+
+#define GM12U320_BLOCK_COUNT		20
+
+#define MISC_RCV_EPT			1
+#define DATA_RCV_EPT			2
+#define DATA_SND_EPT			3
+#define MISC_SND_EPT			4
+
+#define DATA_BLOCK_HEADER_SIZE		84
+#define DATA_BLOCK_CONTENT_SIZE		64512
+#define DATA_BLOCK_FOOTER_SIZE		20
+#define DATA_BLOCK_SIZE			(DATA_BLOCK_HEADER_SIZE + \
+					 DATA_BLOCK_CONTENT_SIZE + \
+					 DATA_BLOCK_FOOTER_SIZE)
+#define DATA_LAST_BLOCK_CONTENT_SIZE	4032
+#define DATA_LAST_BLOCK_SIZE		(DATA_BLOCK_HEADER_SIZE + \
+					 DATA_LAST_BLOCK_CONTENT_SIZE + \
+					 DATA_BLOCK_FOOTER_SIZE)
+
+#define CMD_SIZE			31
+#define READ_STATUS_SIZE		13
+#define MISC_VALUE_SIZE			4
+
+#define CMD_TIMEOUT			msecs_to_jiffies(200)
+#define DATA_TIMEOUT			msecs_to_jiffies(1000)
+#define IDLE_TIMEOUT			msecs_to_jiffies(2000)
+#define FIRST_FRAME_TIMEOUT		msecs_to_jiffies(2000)
+
+#define MISC_REQ_GET_SET_ECO_A		0xff
+#define MISC_REQ_GET_SET_ECO_B		0x35
+/* Windows driver does once every second, with arg d = 1, other args 0 */
+#define MISC_REQ_UNKNOWN1_A		0xff
+#define MISC_REQ_UNKNOWN1_B		0x38
+/* Windows driver does this on init, with arg a, b = 0, c = 0xa0, d = 4 */
+#define MISC_REQ_UNKNOWN2_A		0xa5
+#define MISC_REQ_UNKNOWN2_B		0x00
+
+struct gm12u320_device {
+	struct drm_device	         dev;
+	struct drm_simple_display_pipe   pipe;
+	struct drm_connector	         conn;
+	struct usb_device               *udev;
+	unsigned char                   *cmd_buf;
+	unsigned char                   *data_buf[GM12U320_BLOCK_COUNT];
+	bool                             pipe_enabled;
+	struct {
+		bool                     run;
+		struct workqueue_struct *workq;
+		struct work_struct       work;
+		wait_queue_head_t        waitq;
+		struct mutex             lock;
+		struct drm_framebuffer  *fb;
+		struct drm_rect          rect;
+	} fb_update;
+};
+
+static const char cmd_data[CMD_SIZE] = {
+	0x55, 0x53, 0x42, 0x43, 0x00, 0x00, 0x00, 0x00,
+	0x68, 0xfc, 0x00, 0x00, 0x00, 0x00, 0x10, 0xff,
+	0x00, 0x00, 0x00, 0x00, 0xfc, 0x00, 0x80, 0x00,
+	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00
+};
+
+static const char cmd_draw[CMD_SIZE] = {
+	0x55, 0x53, 0x42, 0x43, 0x00, 0x00, 0x00, 0x00,
+	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x10, 0xfe,
+	0x00, 0x00, 0x00, 0xc0, 0xd1, 0x05, 0x00, 0x40,
+	0x00, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00
+};
+
+static const char cmd_misc[CMD_SIZE] = {
+	0x55, 0x53, 0x42, 0x43, 0x00, 0x00, 0x00, 0x00,
+	0x04, 0x00, 0x00, 0x00, 0x80, 0x01, 0x10, 0xfd,
+	0x00, 0x00, 0x00, 0xc0, 0x00, 0x00, 0x00, 0x00,
+	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00
+};
+
+static const char data_block_header[DATA_BLOCK_HEADER_SIZE] = {
+	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+	0xfb, 0x14, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+	0x00, 0x04, 0x15, 0x00, 0x00, 0xfc, 0x00, 0x00,
+	0x01, 0x00, 0x00, 0xdb
+};
+
+static const char data_last_block_header[DATA_BLOCK_HEADER_SIZE] = {
+	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+	0xfb, 0x14, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+	0x2a, 0x00, 0x20, 0x00, 0xc0, 0x0f, 0x00, 0x00,
+	0x01, 0x00, 0x00, 0xd7
+};
+
+static const char data_block_footer[DATA_BLOCK_FOOTER_SIZE] = {
+	0xfb, 0x14, 0x02, 0x20, 0x00, 0x00, 0x00, 0x00,
+	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+	0x80, 0x00, 0x00, 0x4f
+};
+
+static int gm12u320_usb_alloc(struct gm12u320_device *gm12u320)
+{
+	int i, block_size;
+	const char *hdr;
+
+	gm12u320->cmd_buf = kmalloc(CMD_SIZE, GFP_KERNEL);
+	if (!gm12u320->cmd_buf)
+		return -ENOMEM;
+
+	for (i = 0; i < GM12U320_BLOCK_COUNT; i++) {
+		if (i == GM12U320_BLOCK_COUNT - 1) {
+			block_size = DATA_LAST_BLOCK_SIZE;
+			hdr = data_last_block_header;
+		} else {
+			block_size = DATA_BLOCK_SIZE;
+			hdr = data_block_header;
+		}
+
+		gm12u320->data_buf[i] = kzalloc(block_size, GFP_KERNEL);
+		if (!gm12u320->data_buf[i])
+			return -ENOMEM;
+
+		memcpy(gm12u320->data_buf[i], hdr, DATA_BLOCK_HEADER_SIZE);
+		memcpy(gm12u320->data_buf[i] +
+				(block_size - DATA_BLOCK_FOOTER_SIZE),
+		       data_block_footer, DATA_BLOCK_FOOTER_SIZE);
+	}
+
+	gm12u320->fb_update.workq = create_singlethread_workqueue(DRIVER_NAME);
+	if (!gm12u320->fb_update.workq)
+		return -ENOMEM;
+
+	return 0;
+}
+
+static void gm12u320_usb_free(struct gm12u320_device *gm12u320)
+{
+	int i;
+
+	if (gm12u320->fb_update.workq)
+		destroy_workqueue(gm12u320->fb_update.workq);
+
+	for (i = 0; i < GM12U320_BLOCK_COUNT; i++)
+		kfree(gm12u320->data_buf[i]);
+
+	kfree(gm12u320->cmd_buf);
+}
+
+static int gm12u320_misc_request(struct gm12u320_device *gm12u320,
+				 u8 req_a, u8 req_b,
+				 u8 arg_a, u8 arg_b, u8 arg_c, u8 arg_d)
+{
+	int ret, len;
+
+	memcpy(gm12u320->cmd_buf, &cmd_misc, CMD_SIZE);
+	gm12u320->cmd_buf[20] = req_a;
+	gm12u320->cmd_buf[21] = req_b;
+	gm12u320->cmd_buf[22] = arg_a;
+	gm12u320->cmd_buf[23] = arg_b;
+	gm12u320->cmd_buf[24] = arg_c;
+	gm12u320->cmd_buf[25] = arg_d;
+
+	/* Send request */
+	ret = usb_bulk_msg(gm12u320->udev,
+			   usb_sndbulkpipe(gm12u320->udev, MISC_SND_EPT),
+			   gm12u320->cmd_buf, CMD_SIZE, &len, CMD_TIMEOUT);
+	if (ret || len != CMD_SIZE) {
+		dev_err(&gm12u320->udev->dev, "Misc. req. error %d\n", ret);
+		return -EIO;
+	}
+
+	/* Read value */
+	ret = usb_bulk_msg(gm12u320->udev,
+			   usb_rcvbulkpipe(gm12u320->udev, MISC_RCV_EPT),
+			   gm12u320->cmd_buf, MISC_VALUE_SIZE, &len,
+			   DATA_TIMEOUT);
+	if (ret || len != MISC_VALUE_SIZE) {
+		dev_err(&gm12u320->udev->dev, "Misc. value error %d\n", ret);
+		return -EIO;
+	}
+	/* cmd_buf[0] now contains the read value, which we don't use */
+
+	/* Read status */
+	ret = usb_bulk_msg(gm12u320->udev,
+			   usb_rcvbulkpipe(gm12u320->udev, MISC_RCV_EPT),
+			   gm12u320->cmd_buf, READ_STATUS_SIZE, &len,
+			   CMD_TIMEOUT);
+	if (ret || len != READ_STATUS_SIZE) {
+		dev_err(&gm12u320->udev->dev, "Misc. status error %d\n", ret);
+		return -EIO;
+	}
+
+	return 0;
+}
+
+static void gm12u320_32bpp_to_24bpp_packed(u8 *dst, u8 *src, int len)
+{
+	while (len--) {
+		*dst++ = *src++;
+		*dst++ = *src++;
+		*dst++ = *src++;
+		src++;
+	}
+}
+
+static void gm12u320_copy_fb_to_blocks(struct gm12u320_device *gm12u320)
+{
+	int block, dst_offset, len, remain, ret, x1, x2, y1, y2;
+	struct drm_framebuffer *fb;
+	void *vaddr;
+	u8 *src;
+
+	mutex_lock(&gm12u320->fb_update.lock);
+
+	if (!gm12u320->fb_update.fb)
+		goto unlock;
+
+	fb = gm12u320->fb_update.fb;
+	x1 = gm12u320->fb_update.rect.x1;
+	x2 = gm12u320->fb_update.rect.x2;
+	y1 = gm12u320->fb_update.rect.y1;
+	y2 = gm12u320->fb_update.rect.y2;
+
+	vaddr = drm_gem_shmem_vmap(fb->obj[0]);
+	if (IS_ERR(vaddr)) {
+		DRM_ERROR("failed to vmap fb: %ld\n", PTR_ERR(vaddr));
+		goto put_fb;
+	}
+
+	if (fb->obj[0]->import_attach) {
+		ret = dma_buf_begin_cpu_access(
+			fb->obj[0]->import_attach->dmabuf, DMA_FROM_DEVICE);
+		if (ret) {
+			DRM_ERROR("dma_buf_begin_cpu_access err: %d\n", ret);
+			goto vunmap;
+		}
+	}
+
+	src = vaddr + y1 * fb->pitches[0] + x1 * 4;
+
+	x1 += (GM12U320_REAL_WIDTH - GM12U320_USER_WIDTH) / 2;
+	x2 += (GM12U320_REAL_WIDTH - GM12U320_USER_WIDTH) / 2;
+
+	for (; y1 < y2; y1++) {
+		remain = 0;
+		len = (x2 - x1) * 3;
+		dst_offset = (y1 * GM12U320_REAL_WIDTH + x1) * 3;
+		block = dst_offset / DATA_BLOCK_CONTENT_SIZE;
+		dst_offset %= DATA_BLOCK_CONTENT_SIZE;
+
+		if ((dst_offset + len) > DATA_BLOCK_CONTENT_SIZE) {
+			remain = dst_offset + len - DATA_BLOCK_CONTENT_SIZE;
+			len = DATA_BLOCK_CONTENT_SIZE - dst_offset;
+		}
+
+		dst_offset += DATA_BLOCK_HEADER_SIZE;
+		len /= 3;
+
+		gm12u320_32bpp_to_24bpp_packed(
+			gm12u320->data_buf[block] + dst_offset,
+			src, len);
+
+		if (remain) {
+			block++;
+			dst_offset = DATA_BLOCK_HEADER_SIZE;
+			gm12u320_32bpp_to_24bpp_packed(
+				gm12u320->data_buf[block] + dst_offset,
+				src + len * 4, remain / 3);
+		}
+		src += fb->pitches[0];
+	}
+
+	if (fb->obj[0]->import_attach) {
+		ret = dma_buf_end_cpu_access(fb->obj[0]->import_attach->dmabuf,
+					     DMA_FROM_DEVICE);
+		if (ret)
+			DRM_ERROR("dma_buf_end_cpu_access err: %d\n", ret);
+	}
+vunmap:
+	drm_gem_shmem_vunmap(fb->obj[0], vaddr);
+put_fb:
+	drm_framebuffer_put(fb);
+	gm12u320->fb_update.fb = NULL;
+unlock:
+	mutex_unlock(&gm12u320->fb_update.lock);
+}
+
+static int gm12u320_fb_update_ready(struct gm12u320_device *gm12u320)
+{
+	int ret;
+
+	mutex_lock(&gm12u320->fb_update.lock);
+	ret = !gm12u320->fb_update.run || gm12u320->fb_update.fb != NULL;
+	mutex_unlock(&gm12u320->fb_update.lock);
+
+	return ret;
+}
+
+static void gm12u320_fb_update_work(struct work_struct *work)
+{
+	struct gm12u320_device *gm12u320 =
+		container_of(work, struct gm12u320_device, fb_update.work);
+	int draw_status_timeout = FIRST_FRAME_TIMEOUT;
+	int block, block_size, len;
+	int frame = 0;
+	int ret = 0;
+
+	while (gm12u320->fb_update.run) {
+		gm12u320_copy_fb_to_blocks(gm12u320);
+
+		for (block = 0; block < GM12U320_BLOCK_COUNT; block++) {
+			if (block == GM12U320_BLOCK_COUNT - 1)
+				block_size = DATA_LAST_BLOCK_SIZE;
+			else
+				block_size = DATA_BLOCK_SIZE;
+
+			/* Send data command to device */
+			memcpy(gm12u320->cmd_buf, cmd_data, CMD_SIZE);
+			gm12u320->cmd_buf[8] = block_size & 0xff;
+			gm12u320->cmd_buf[9] = block_size >> 8;
+			gm12u320->cmd_buf[20] = 0xfc - block * 4;
+			gm12u320->cmd_buf[21] = block | (frame << 7);
+
+			ret = usb_bulk_msg(gm12u320->udev,
+				usb_sndbulkpipe(gm12u320->udev, DATA_SND_EPT),
+				gm12u320->cmd_buf, CMD_SIZE, &len,
+				CMD_TIMEOUT);
+			if (ret || len != CMD_SIZE)
+				goto err;
+
+			/* Send data block to device */
+			ret = usb_bulk_msg(gm12u320->udev,
+				usb_sndbulkpipe(gm12u320->udev, DATA_SND_EPT),
+				gm12u320->data_buf[block], block_size,
+				&len, DATA_TIMEOUT);
+			if (ret || len != block_size)
+				goto err;
+
+			/* Read status */
+			ret = usb_bulk_msg(gm12u320->udev,
+				usb_rcvbulkpipe(gm12u320->udev, DATA_RCV_EPT),
+				gm12u320->cmd_buf, READ_STATUS_SIZE, &len,
+				CMD_TIMEOUT);
+			if (ret || len != READ_STATUS_SIZE)
+				goto err;
+		}
+
+		/* Send draw command to device */
+		memcpy(gm12u320->cmd_buf, cmd_draw, CMD_SIZE);
+		ret = usb_bulk_msg(gm12u320->udev,
+			usb_sndbulkpipe(gm12u320->udev, DATA_SND_EPT),
+			gm12u320->cmd_buf, CMD_SIZE, &len, CMD_TIMEOUT);
+		if (ret || len != CMD_SIZE)
+			goto err;
+
+		/* Read status */
+		ret = usb_bulk_msg(gm12u320->udev,
+			usb_rcvbulkpipe(gm12u320->udev, DATA_RCV_EPT),
+			gm12u320->cmd_buf, READ_STATUS_SIZE, &len,
+			draw_status_timeout);
+		if (ret || len != READ_STATUS_SIZE)
+			goto err;
+
+		draw_status_timeout = CMD_TIMEOUT;
+		frame = !frame;
+
+		/*
+		 * We must draw a frame every 2s otherwise the projector
+		 * switches back to showing its logo.
+		 */
+		wait_event_timeout(gm12u320->fb_update.waitq,
+				   gm12u320_fb_update_ready(gm12u320),
+				   IDLE_TIMEOUT);
+	}
+	return;
+err:
+	/* Do not log errors caused by module unload or device unplug */
+	if (ret != -ECONNRESET && ret != -ESHUTDOWN)
+		dev_err(&gm12u320->udev->dev, "Frame update error: %d\n", ret);
+}
+
+static void gm12u320_fb_mark_dirty(struct drm_framebuffer *fb,
+				   struct drm_rect *dirty)
+{
+	struct gm12u320_device *gm12u320 = fb->dev->dev_private;
+	struct drm_framebuffer *old_fb = NULL;
+	bool wakeup = false;
+
+	mutex_lock(&gm12u320->fb_update.lock);
+
+	if (gm12u320->fb_update.fb != fb) {
+		old_fb = gm12u320->fb_update.fb;
+		drm_framebuffer_get(fb);
+		gm12u320->fb_update.fb = fb;
+		gm12u320->fb_update.rect = *dirty;
+		wakeup = true;
+	} else {
+		struct drm_rect *rect = &gm12u320->fb_update.rect;
+
+		rect->x1 = min(rect->x1, dirty->x1);
+		rect->y1 = min(rect->y1, dirty->y1);
+		rect->x2 = max(rect->x2, dirty->x2);
+		rect->y2 = max(rect->y2, dirty->y2);
+	}
+
+	mutex_unlock(&gm12u320->fb_update.lock);
+
+	if (wakeup)
+		wake_up(&gm12u320->fb_update.waitq);
+
+	if (old_fb)
+		drm_framebuffer_put(old_fb);
+}
+
+static void gm12u320_start_fb_update(struct gm12u320_device *gm12u320)
+{
+	mutex_lock(&gm12u320->fb_update.lock);
+	gm12u320->fb_update.run = true;
+	mutex_unlock(&gm12u320->fb_update.lock);
+
+	queue_work(gm12u320->fb_update.workq, &gm12u320->fb_update.work);
+}
+
+static void gm12u320_stop_fb_update(struct gm12u320_device *gm12u320)
+{
+	mutex_lock(&gm12u320->fb_update.lock);
+	gm12u320->fb_update.run = false;
+	mutex_unlock(&gm12u320->fb_update.lock);
+
+	wake_up(&gm12u320->fb_update.waitq);
+	cancel_work_sync(&gm12u320->fb_update.work);
+
+	mutex_lock(&gm12u320->fb_update.lock);
+	if (gm12u320->fb_update.fb) {
+		drm_framebuffer_put(gm12u320->fb_update.fb);
+		gm12u320->fb_update.fb = NULL;
+	}
+	mutex_unlock(&gm12u320->fb_update.lock);
+}
+
+static int gm12u320_set_ecomode(struct gm12u320_device *gm12u320)
+{
+	return gm12u320_misc_request(gm12u320, MISC_REQ_GET_SET_ECO_A,
+				     MISC_REQ_GET_SET_ECO_B, 0x01 /* set */,
+				     eco_mode ? 0x01 : 0x00, 0x00, 0x01);
+}
+
+/* ------------------------------------------------------------------ */
+/* gm12u320 connector						      */
+
+/*
+ * We use fake EDID info so that userspace know that it is dealing with
+ * an Acer projector, rather then listing this as an "unknown" monitor.
+ * Note this assumes this driver is only ever used with the Acer C120, if we
+ * add support for other devices the vendor and model should be parameterized.
+ */
+static struct edid gm12u320_edid = {
+	.header		= { 0x00, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x00 },
+	.mfg_id		= { 0x04, 0x72 },	/* "ACR" */
+	.prod_code	= { 0x20, 0xc1 },	/* C120h */
+	.serial		= 0xaa55aa55,
+	.mfg_week	= 1,
+	.mfg_year	= 16,
+	.version	= 1,			/* EDID 1.3 */
+	.revision	= 3,			/* EDID 1.3 */
+	.input		= 0x08,			/* Analog input */
+	.features	= 0x0a,			/* Pref timing in DTD 1 */
+	.standard_timings = { { 1, 1 }, { 1, 1 }, { 1, 1 }, { 1, 1 },
+			      { 1, 1 }, { 1, 1 }, { 1, 1 }, { 1, 1 } },
+	.detailed_timings = { {
+		.pixel_clock = 3383,
+		/* hactive = 848, hblank = 256 */
+		.data.pixel_data.hactive_lo = 0x50,
+		.data.pixel_data.hblank_lo = 0x00,
+		.data.pixel_data.hactive_hblank_hi = 0x31,
+		/* vactive = 480, vblank = 28 */
+		.data.pixel_data.vactive_lo = 0xe0,
+		.data.pixel_data.vblank_lo = 0x1c,
+		.data.pixel_data.vactive_vblank_hi = 0x10,
+		/* hsync offset 40 pw 128, vsync offset 1 pw 4 */
+		.data.pixel_data.hsync_offset_lo = 0x28,
+		.data.pixel_data.hsync_pulse_width_lo = 0x80,
+		.data.pixel_data.vsync_offset_pulse_width_lo = 0x14,
+		.data.pixel_data.hsync_vsync_offset_pulse_width_hi = 0x00,
+		/* Digital separate syncs, hsync+, vsync+ */
+		.data.pixel_data.misc = 0x1e,
+	}, {
+		.pixel_clock = 0,
+		.data.other_data.type = 0xfd, /* Monitor ranges */
+		.data.other_data.data.range.min_vfreq = 59,
+		.data.other_data.data.range.max_vfreq = 61,
+		.data.other_data.data.range.min_hfreq_khz = 29,
+		.data.other_data.data.range.max_hfreq_khz = 32,
+		.data.other_data.data.range.pixel_clock_mhz = 4, /* 40 MHz */
+		.data.other_data.data.range.flags = 0,
+		.data.other_data.data.range.formula.cvt = {
+			0xa0, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20 },
+	}, {
+		.pixel_clock = 0,
+		.data.other_data.type = 0xfc, /* Model string */
+		.data.other_data.data.str.str = {
+			'P', 'r', 'o', 'j', 'e', 'c', 't', 'o', 'r', '\n',
+			' ', ' ',  ' ' },
+	}, {
+		.pixel_clock = 0,
+		.data.other_data.type = 0xfe, /* Unspecified text / padding */
+		.data.other_data.data.str.str = {
+			'\n', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ',
+			' ', ' ',  ' ' },
+	} },
+	.checksum = 0x13,
+};
+
+static int gm12u320_conn_get_modes(struct drm_connector *connector)
+{
+	drm_connector_update_edid_property(connector, &gm12u320_edid);
+	return drm_add_edid_modes(connector, &gm12u320_edid);
+}
+
+static const struct drm_connector_helper_funcs gm12u320_conn_helper_funcs = {
+	.get_modes = gm12u320_conn_get_modes,
+};
+
+static const struct drm_connector_funcs gm12u320_conn_funcs = {
+	.fill_modes = drm_helper_probe_single_connector_modes,
+	.destroy = drm_connector_cleanup,
+	.reset = drm_atomic_helper_connector_reset,
+	.atomic_duplicate_state = drm_atomic_helper_connector_duplicate_state,
+	.atomic_destroy_state = drm_atomic_helper_connector_destroy_state,
+};
+
+static int gm12u320_conn_init(struct gm12u320_device *gm12u320)
+{
+	drm_connector_helper_add(&gm12u320->conn, &gm12u320_conn_helper_funcs);
+	return drm_connector_init(&gm12u320->dev, &gm12u320->conn,
+				  &gm12u320_conn_funcs, DRM_MODE_CONNECTOR_VGA);
+}
+
+/* ------------------------------------------------------------------ */
+/* gm12u320 (simple) display pipe				      */
+
+static void gm12u320_pipe_enable(struct drm_simple_display_pipe *pipe,
+				 struct drm_crtc_state *crtc_state,
+				 struct drm_plane_state *plane_state)
+{
+	struct gm12u320_device *gm12u320 = pipe->crtc.dev->dev_private;
+	struct drm_rect rect = { 0, 0, GM12U320_USER_WIDTH, GM12U320_HEIGHT };
+
+	gm12u320_fb_mark_dirty(plane_state->fb, &rect);
+	gm12u320_start_fb_update(gm12u320);
+	gm12u320->pipe_enabled = true;
+}
+
+static void gm12u320_pipe_disable(struct drm_simple_display_pipe *pipe)
+{
+	struct gm12u320_device *gm12u320 = pipe->crtc.dev->dev_private;
+
+	gm12u320_stop_fb_update(gm12u320);
+	gm12u320->pipe_enabled = false;
+}
+
+static void gm12u320_pipe_update(struct drm_simple_display_pipe *pipe,
+				 struct drm_plane_state *old_state)
+{
+	struct drm_plane_state *state = pipe->plane.state;
+	struct drm_crtc *crtc = &pipe->crtc;
+	struct drm_rect rect;
+
+	if (drm_atomic_helper_damage_merged(old_state, state, &rect))
+		gm12u320_fb_mark_dirty(pipe->plane.state->fb, &rect);
+
+	if (crtc->state->event) {
+		spin_lock_irq(&crtc->dev->event_lock);
+		drm_crtc_send_vblank_event(crtc, crtc->state->event);
+		crtc->state->event = NULL;
+		spin_unlock_irq(&crtc->dev->event_lock);
+	}
+}
+
+static const struct drm_simple_display_pipe_funcs gm12u320_pipe_funcs = {
+	.enable	    = gm12u320_pipe_enable,
+	.disable    = gm12u320_pipe_disable,
+	.update	    = gm12u320_pipe_update,
+};
+
+static const uint32_t gm12u320_pipe_formats[] = {
+	DRM_FORMAT_XRGB8888,
+};
+
+static const uint64_t gm12u320_pipe_modifiers[] = {
+	DRM_FORMAT_MOD_LINEAR,
+	DRM_FORMAT_MOD_INVALID
+};
+
+static void gm12u320_driver_release(struct drm_device *dev)
+{
+	struct gm12u320_device *gm12u320 = dev->dev_private;
+
+	gm12u320_usb_free(gm12u320);
+	drm_mode_config_cleanup(dev);
+	drm_dev_fini(dev);
+	kfree(gm12u320);
+}
+
+DEFINE_DRM_GEM_SHMEM_FOPS(gm12u320_fops);
+
+static struct drm_driver gm12u320_drm_driver = {
+	.driver_features = DRIVER_MODESET | DRIVER_GEM | DRIVER_ATOMIC,
+
+	.name		 = DRIVER_NAME,
+	.desc		 = DRIVER_DESC,
+	.date		 = DRIVER_DATE,
+	.major		 = DRIVER_MAJOR,
+	.minor		 = DRIVER_MINOR,
+
+	.release	 = gm12u320_driver_release,
+	.fops		 = &gm12u320_fops,
+	DRM_GEM_SHMEM_DRIVER_OPS,
+};
+
+static const struct drm_mode_config_funcs gm12u320_mode_config_funcs = {
+	.fb_create = drm_gem_fb_create_with_dirty,
+	.atomic_check = drm_atomic_helper_check,
+	.atomic_commit = drm_atomic_helper_commit,
+};
+
+static int gm12u320_usb_probe(struct usb_interface *interface,
+			      const struct usb_device_id *id)
+{
+	struct gm12u320_device *gm12u320;
+	struct drm_device *dev;
+	int ret;
+
+	/*
+	 * The gm12u320 presents itself to the system as 2 usb mass-storage
+	 * interfaces, we only care about / need the first one.
+	 */
+	if (interface->cur_altsetting->desc.bInterfaceNumber != 0)
+		return -ENODEV;
+
+	gm12u320 = kzalloc(sizeof(*gm12u320), GFP_KERNEL);
+	if (gm12u320 == NULL)
+		return -ENOMEM;
+
+	gm12u320->udev = interface_to_usbdev(interface);
+	INIT_WORK(&gm12u320->fb_update.work, gm12u320_fb_update_work);
+	mutex_init(&gm12u320->fb_update.lock);
+	init_waitqueue_head(&gm12u320->fb_update.waitq);
+
+	dev = &gm12u320->dev;
+	ret = drm_dev_init(dev, &gm12u320_drm_driver, &interface->dev);
+	if (ret) {
+		kfree(gm12u320);
+		return ret;
+	}
+	dev->dev_private = gm12u320;
+
+	drm_mode_config_init(dev);
+	dev->mode_config.min_width = GM12U320_USER_WIDTH;
+	dev->mode_config.max_width = GM12U320_USER_WIDTH;
+	dev->mode_config.min_height = GM12U320_HEIGHT;
+	dev->mode_config.max_height = GM12U320_HEIGHT;
+	dev->mode_config.funcs = &gm12u320_mode_config_funcs;
+
+	ret = gm12u320_usb_alloc(gm12u320);
+	if (ret)
+		goto err_put;
+
+	ret = gm12u320_set_ecomode(gm12u320);
+	if (ret)
+		goto err_put;
+
+	ret = gm12u320_conn_init(gm12u320);
+	if (ret)
+		goto err_put;
+
+	ret = drm_simple_display_pipe_init(&gm12u320->dev,
+					   &gm12u320->pipe,
+					   &gm12u320_pipe_funcs,
+					   gm12u320_pipe_formats,
+					   ARRAY_SIZE(gm12u320_pipe_formats),
+					   gm12u320_pipe_modifiers,
+					   &gm12u320->conn);
+	if (ret)
+		goto err_put;
+
+	drm_mode_config_reset(dev);
+
+	usb_set_intfdata(interface, dev);
+	ret = drm_dev_register(dev, 0);
+	if (ret)
+		goto err_put;
+
+	drm_fbdev_generic_setup(dev, dev->mode_config.preferred_depth);
+
+	return 0;
+
+err_put:
+	drm_dev_put(dev);
+	return ret;
+}
+
+static void gm12u320_usb_disconnect(struct usb_interface *interface)
+{
+	struct drm_device *dev = usb_get_intfdata(interface);
+	struct gm12u320_device *gm12u320 = dev->dev_private;
+
+	gm12u320_stop_fb_update(gm12u320);
+	drm_dev_unplug(dev);
+	drm_dev_put(dev);
+}
+
+#ifdef CONFIG_PM
+static int gm12u320_suspend(struct usb_interface *interface,
+			    pm_message_t message)
+{
+	struct drm_device *dev = usb_get_intfdata(interface);
+	struct gm12u320_device *gm12u320 = dev->dev_private;
+
+	if (gm12u320->pipe_enabled)
+		gm12u320_stop_fb_update(gm12u320);
+
+	return 0;
+}
+
+static int gm12u320_resume(struct usb_interface *interface)
+{
+	struct drm_device *dev = usb_get_intfdata(interface);
+	struct gm12u320_device *gm12u320 = dev->dev_private;
+
+	gm12u320_set_ecomode(gm12u320);
+	if (gm12u320->pipe_enabled)
+		gm12u320_start_fb_update(gm12u320);
+
+	return 0;
+}
+#endif
+
+static const struct usb_device_id id_table[] = {
+	{ USB_DEVICE(0x1de1, 0xc102) },
+	{},
+};
+MODULE_DEVICE_TABLE(usb, id_table);
+
+static struct usb_driver gm12u320_usb_driver = {
+	.name = "gm12u320",
+	.probe = gm12u320_usb_probe,
+	.disconnect = gm12u320_usb_disconnect,
+	.id_table = id_table,
+#ifdef CONFIG_PM
+	.suspend = gm12u320_suspend,
+	.resume = gm12u320_resume,
+	.reset_resume = gm12u320_resume,
+#endif
+};
+
+module_usb_driver(gm12u320_usb_driver);
+MODULE_AUTHOR("Hans de Goede <hdegoede@redhat.com>");
+MODULE_LICENSE("GPL");
-- 
cgit v1.2.3


From f27e43b46dae63a20ad01ba76f1ccb7cc46b28db Mon Sep 17 00:00:00 2001
From: Noralf Trønnes <noralf@tronnes.org>
Date: Mon, 22 Jul 2019 12:43:12 +0200
Subject: MAINTAINERS: Remove tinydrm entry
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

tinydrm is just a collection of tiny drivers now.
Add T: drm-misc entry for tinydrm drivers that lacks it.

Cc: David Lechner <david@lechnology.com>
Reviewed-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: Noralf Trønnes <noralf@tronnes.org>
Acked-by: David Lechner <david@lechnology.com>
Acked-by: Eric Anholt <eric@anholt.net>
Link: https://patchwork.freedesktop.org/patch/msgid/20190722104312.16184-10-noralf@tronnes.org
---
 MAINTAINERS | 13 +++++--------
 1 file changed, 5 insertions(+), 8 deletions(-)

(limited to 'MAINTAINERS')

diff --git a/MAINTAINERS b/MAINTAINERS
index 7aae5926a388..060ffe635832 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -5103,6 +5103,7 @@ F:	drivers/gpu/drm/gm12u320/
 
 DRM DRIVER FOR ILITEK ILI9225 PANELS
 M:	David Lechner <david@lechnology.com>
+T:	git git://anongit.freedesktop.org/drm/drm-misc
 S:	Maintained
 F:	drivers/gpu/drm/tinydrm/ili9225.c
 F:	Documentation/devicetree/bindings/display/ilitek,ili9225.txt
@@ -5131,6 +5132,7 @@ F:	drivers/gpu/drm/mgag200/
 
 DRM DRIVER FOR MI0283QT
 M:	Noralf Trønnes <noralf@tronnes.org>
+T:	git git://anongit.freedesktop.org/drm/drm-misc
 S:	Maintained
 F:	drivers/gpu/drm/tinydrm/mi0283qt.c
 F:	Documentation/devicetree/bindings/display/multi-inno,mi0283qt.txt
@@ -5164,6 +5166,7 @@ F:	Documentation/devicetree/bindings/display/panel/olimex,lcd-olinuxino.txt
 
 DRM DRIVER FOR PERVASIVE DISPLAYS REPAPER PANELS
 M:	Noralf Trønnes <noralf@tronnes.org>
+T:	git git://anongit.freedesktop.org/drm/drm-misc
 S:	Maintained
 F:	drivers/gpu/drm/tinydrm/repaper.c
 F:	Documentation/devicetree/bindings/display/repaper.txt
@@ -5223,12 +5226,14 @@ F:	Documentation/devicetree/bindings/display/panel/sitronix,st7701.txt
 
 DRM DRIVER FOR SITRONIX ST7586 PANELS
 M:	David Lechner <david@lechnology.com>
+T:	git git://anongit.freedesktop.org/drm/drm-misc
 S:	Maintained
 F:	drivers/gpu/drm/tinydrm/st7586.c
 F:	Documentation/devicetree/bindings/display/sitronix,st7586.txt
 
 DRM DRIVER FOR SITRONIX ST7735R PANELS
 M:	David Lechner <david@lechnology.com>
+T:	git git://anongit.freedesktop.org/drm/drm-misc
 S:	Maintained
 F:	drivers/gpu/drm/tinydrm/st7735r.c
 F:	Documentation/devicetree/bindings/display/sitronix,st7735r.txt
@@ -5538,14 +5543,6 @@ F:	drivers/gpu/drm/panel/
 F:	include/drm/drm_panel.h
 F:	Documentation/devicetree/bindings/display/panel/
 
-DRM TINYDRM DRIVERS
-M:	Noralf Trønnes <noralf@tronnes.org>
-W:	https://github.com/notro/tinydrm/wiki/Development
-T:	git git://anongit.freedesktop.org/drm/drm-misc
-S:	Maintained
-F:	drivers/gpu/drm/tinydrm/
-F:	include/drm/tinydrm/
-
 DRM DRIVERS FOR XEN
 M:	Oleksandr Andrushchenko <oleksandr_andrushchenko@epam.com>
 T:	git git://anongit.freedesktop.org/drm/drm-misc
-- 
cgit v1.2.3


From 043386a0f094e0ae8bda6f824461debe9b708db5 Mon Sep 17 00:00:00 2001
From: Noralf Trønnes <noralf@tronnes.org>
Date: Thu, 25 Jul 2019 12:51:31 +0200
Subject: drm/tinydrm: Rename folder to tiny
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

The drm in tinydrm is superfluous so rename to tiny.

Suggested-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Noralf Trønnes <noralf@tronnes.org>
Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Acked-by: Sam Ravnborg <sam@ravnborg.org>
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190725105132.22545-3-noralf@tronnes.org
---
 MAINTAINERS                        |   12 +-
 drivers/gpu/drm/Kconfig            |    2 +-
 drivers/gpu/drm/Makefile           |    2 +-
 drivers/gpu/drm/tiny/Kconfig       |   89 +++
 drivers/gpu/drm/tiny/Makefile      |    9 +
 drivers/gpu/drm/tiny/hx8357d.c     |  304 +++++++++
 drivers/gpu/drm/tiny/ili9225.c     |  470 ++++++++++++++
 drivers/gpu/drm/tiny/ili9341.c     |  268 ++++++++
 drivers/gpu/drm/tiny/mi0283qt.c    |  294 +++++++++
 drivers/gpu/drm/tiny/repaper.c     | 1212 ++++++++++++++++++++++++++++++++++++
 drivers/gpu/drm/tiny/st7586.c      |  424 +++++++++++++
 drivers/gpu/drm/tiny/st7735r.c     |  246 ++++++++
 drivers/gpu/drm/tinydrm/Kconfig    |   89 ---
 drivers/gpu/drm/tinydrm/Makefile   |    9 -
 drivers/gpu/drm/tinydrm/hx8357d.c  |  304 ---------
 drivers/gpu/drm/tinydrm/ili9225.c  |  470 --------------
 drivers/gpu/drm/tinydrm/ili9341.c  |  268 --------
 drivers/gpu/drm/tinydrm/mi0283qt.c |  294 ---------
 drivers/gpu/drm/tinydrm/repaper.c  | 1212 ------------------------------------
 drivers/gpu/drm/tinydrm/st7586.c   |  424 -------------
 drivers/gpu/drm/tinydrm/st7735r.c  |  246 --------
 21 files changed, 3324 insertions(+), 3324 deletions(-)
 create mode 100644 drivers/gpu/drm/tiny/Kconfig
 create mode 100644 drivers/gpu/drm/tiny/Makefile
 create mode 100644 drivers/gpu/drm/tiny/hx8357d.c
 create mode 100644 drivers/gpu/drm/tiny/ili9225.c
 create mode 100644 drivers/gpu/drm/tiny/ili9341.c
 create mode 100644 drivers/gpu/drm/tiny/mi0283qt.c
 create mode 100644 drivers/gpu/drm/tiny/repaper.c
 create mode 100644 drivers/gpu/drm/tiny/st7586.c
 create mode 100644 drivers/gpu/drm/tiny/st7735r.c
 delete mode 100644 drivers/gpu/drm/tinydrm/Kconfig
 delete mode 100644 drivers/gpu/drm/tinydrm/Makefile
 delete mode 100644 drivers/gpu/drm/tinydrm/hx8357d.c
 delete mode 100644 drivers/gpu/drm/tinydrm/ili9225.c
 delete mode 100644 drivers/gpu/drm/tinydrm/ili9341.c
 delete mode 100644 drivers/gpu/drm/tinydrm/mi0283qt.c
 delete mode 100644 drivers/gpu/drm/tinydrm/repaper.c
 delete mode 100644 drivers/gpu/drm/tinydrm/st7586.c
 delete mode 100644 drivers/gpu/drm/tinydrm/st7735r.c

(limited to 'MAINTAINERS')

diff --git a/MAINTAINERS b/MAINTAINERS
index 060ffe635832..00c7cbc92711 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -5105,14 +5105,14 @@ DRM DRIVER FOR ILITEK ILI9225 PANELS
 M:	David Lechner <david@lechnology.com>
 T:	git git://anongit.freedesktop.org/drm/drm-misc
 S:	Maintained
-F:	drivers/gpu/drm/tinydrm/ili9225.c
+F:	drivers/gpu/drm/tiny/ili9225.c
 F:	Documentation/devicetree/bindings/display/ilitek,ili9225.txt
 
 DRM DRIVER FOR HX8357D PANELS
 M:	Eric Anholt <eric@anholt.net>
 T:	git git://anongit.freedesktop.org/drm/drm-misc
 S:	Maintained
-F:	drivers/gpu/drm/tinydrm/hx8357d.c
+F:	drivers/gpu/drm/tiny/hx8357d.c
 F:	Documentation/devicetree/bindings/display/himax,hx8357d.txt
 
 DRM DRIVER FOR INTEL I810 VIDEO CARDS
@@ -5134,7 +5134,7 @@ DRM DRIVER FOR MI0283QT
 M:	Noralf Trønnes <noralf@tronnes.org>
 T:	git git://anongit.freedesktop.org/drm/drm-misc
 S:	Maintained
-F:	drivers/gpu/drm/tinydrm/mi0283qt.c
+F:	drivers/gpu/drm/tiny/mi0283qt.c
 F:	Documentation/devicetree/bindings/display/multi-inno,mi0283qt.txt
 
 DRM DRIVER FOR MSM ADRENO GPU
@@ -5168,7 +5168,7 @@ DRM DRIVER FOR PERVASIVE DISPLAYS REPAPER PANELS
 M:	Noralf Trønnes <noralf@tronnes.org>
 T:	git git://anongit.freedesktop.org/drm/drm-misc
 S:	Maintained
-F:	drivers/gpu/drm/tinydrm/repaper.c
+F:	drivers/gpu/drm/tiny/repaper.c
 F:	Documentation/devicetree/bindings/display/repaper.txt
 
 DRM DRIVER FOR QEMU'S CIRRUS DEVICE
@@ -5228,14 +5228,14 @@ DRM DRIVER FOR SITRONIX ST7586 PANELS
 M:	David Lechner <david@lechnology.com>
 T:	git git://anongit.freedesktop.org/drm/drm-misc
 S:	Maintained
-F:	drivers/gpu/drm/tinydrm/st7586.c
+F:	drivers/gpu/drm/tiny/st7586.c
 F:	Documentation/devicetree/bindings/display/sitronix,st7586.txt
 
 DRM DRIVER FOR SITRONIX ST7735R PANELS
 M:	David Lechner <david@lechnology.com>
 T:	git git://anongit.freedesktop.org/drm/drm-misc
 S:	Maintained
-F:	drivers/gpu/drm/tinydrm/st7735r.c
+F:	drivers/gpu/drm/tiny/st7735r.c
 F:	Documentation/devicetree/bindings/display/sitronix,st7735r.txt
 
 DRM DRIVER FOR ST-ERICSSON MCDE
diff --git a/drivers/gpu/drm/Kconfig b/drivers/gpu/drm/Kconfig
index a88581b0f002..a5ae0d369e88 100644
--- a/drivers/gpu/drm/Kconfig
+++ b/drivers/gpu/drm/Kconfig
@@ -340,7 +340,7 @@ source "drivers/gpu/drm/mxsfb/Kconfig"
 
 source "drivers/gpu/drm/meson/Kconfig"
 
-source "drivers/gpu/drm/tinydrm/Kconfig"
+source "drivers/gpu/drm/tiny/Kconfig"
 
 source "drivers/gpu/drm/pl111/Kconfig"
 
diff --git a/drivers/gpu/drm/Makefile b/drivers/gpu/drm/Makefile
index 0b30afa7524d..1d366c4bbd1f 100644
--- a/drivers/gpu/drm/Makefile
+++ b/drivers/gpu/drm/Makefile
@@ -112,7 +112,7 @@ obj-$(CONFIG_DRM_ARCPGU)+= arc/
 obj-y			+= hisilicon/
 obj-$(CONFIG_DRM_ZTE)	+= zte/
 obj-$(CONFIG_DRM_MXSFB)	+= mxsfb/
-obj-y			+= tinydrm/
+obj-y			+= tiny/
 obj-$(CONFIG_DRM_PL111) += pl111/
 obj-$(CONFIG_DRM_TVE200) += tve200/
 obj-$(CONFIG_DRM_XEN) += xen/
diff --git a/drivers/gpu/drm/tiny/Kconfig b/drivers/gpu/drm/tiny/Kconfig
new file mode 100644
index 000000000000..f8c9a0e71dde
--- /dev/null
+++ b/drivers/gpu/drm/tiny/Kconfig
@@ -0,0 +1,89 @@
+# SPDX-License-Identifier: GPL-2.0-only
+config TINYDRM_HX8357D
+	tristate "DRM support for HX8357D display panels"
+	depends on DRM && SPI
+	select DRM_KMS_HELPER
+	select DRM_KMS_CMA_HELPER
+	select DRM_MIPI_DBI
+	select BACKLIGHT_CLASS_DEVICE
+	help
+	  DRM driver for the following HX8357D panels:
+	  * YX350HV15-T 3.5" 340x350 TFT (Adafruit 3.5")
+
+	  If M is selected the module will be called hx8357d.
+
+config TINYDRM_ILI9225
+	tristate "DRM support for ILI9225 display panels"
+	depends on DRM && SPI
+	select DRM_KMS_HELPER
+	select DRM_KMS_CMA_HELPER
+	select DRM_MIPI_DBI
+	help
+	  DRM driver for the following Ilitek ILI9225 panels:
+	  * No-name 2.2" color screen module
+
+	  If M is selected the module will be called ili9225.
+
+config TINYDRM_ILI9341
+	tristate "DRM support for ILI9341 display panels"
+	depends on DRM && SPI
+	select DRM_KMS_HELPER
+	select DRM_KMS_CMA_HELPER
+	select DRM_MIPI_DBI
+	select BACKLIGHT_CLASS_DEVICE
+	help
+	  DRM driver for the following Ilitek ILI9341 panels:
+	  * YX240QV29-T 2.4" 240x320 TFT (Adafruit 2.4")
+
+	  If M is selected the module will be called ili9341.
+
+config TINYDRM_MI0283QT
+	tristate "DRM support for MI0283QT"
+	depends on DRM && SPI
+	select DRM_KMS_HELPER
+	select DRM_KMS_CMA_HELPER
+	select DRM_MIPI_DBI
+	select BACKLIGHT_CLASS_DEVICE
+	help
+	  DRM driver for the Multi-Inno MI0283QT display panel
+	  If M is selected the module will be called mi0283qt.
+
+config TINYDRM_REPAPER
+	tristate "DRM support for Pervasive Displays RePaper panels (V231)"
+	depends on DRM && SPI
+	select DRM_KMS_HELPER
+	select DRM_KMS_CMA_HELPER
+	depends on THERMAL || !THERMAL
+	help
+	  DRM driver for the following Pervasive Displays panels:
+	  1.44" TFT EPD Panel (E1144CS021)
+	  1.90" TFT EPD Panel (E1190CS021)
+	  2.00" TFT EPD Panel (E2200CS021)
+	  2.71" TFT EPD Panel (E2271CS021)
+
+	  If M is selected the module will be called repaper.
+
+config TINYDRM_ST7586
+	tristate "DRM support for Sitronix ST7586 display panels"
+	depends on DRM && SPI
+	select DRM_KMS_HELPER
+	select DRM_KMS_CMA_HELPER
+	select DRM_MIPI_DBI
+	help
+	  DRM driver for the following Sitronix ST7586 panels:
+	  * LEGO MINDSTORMS EV3
+
+	  If M is selected the module will be called st7586.
+
+config TINYDRM_ST7735R
+	tristate "DRM support for Sitronix ST7735R display panels"
+	depends on DRM && SPI
+	select DRM_KMS_HELPER
+	select DRM_KMS_CMA_HELPER
+	select DRM_MIPI_DBI
+	select BACKLIGHT_CLASS_DEVICE
+	help
+	  DRM driver Sitronix ST7735R with one of the following LCDs:
+	  * JD-T18003-T01 1.8" 128x160 TFT
+
+	  If M is selected the module will be called st7735r.
diff --git a/drivers/gpu/drm/tiny/Makefile b/drivers/gpu/drm/tiny/Makefile
new file mode 100644
index 000000000000..6490167a9ad1
--- /dev/null
+++ b/drivers/gpu/drm/tiny/Makefile
@@ -0,0 +1,9 @@
+# SPDX-License-Identifier: GPL-2.0-only
+
+obj-$(CONFIG_TINYDRM_HX8357D)		+= hx8357d.o
+obj-$(CONFIG_TINYDRM_ILI9225)		+= ili9225.o
+obj-$(CONFIG_TINYDRM_ILI9341)		+= ili9341.o
+obj-$(CONFIG_TINYDRM_MI0283QT)		+= mi0283qt.o
+obj-$(CONFIG_TINYDRM_REPAPER)		+= repaper.o
+obj-$(CONFIG_TINYDRM_ST7586)		+= st7586.o
+obj-$(CONFIG_TINYDRM_ST7735R)		+= st7735r.o
diff --git a/drivers/gpu/drm/tiny/hx8357d.c b/drivers/gpu/drm/tiny/hx8357d.c
new file mode 100644
index 000000000000..9af8ff84974f
--- /dev/null
+++ b/drivers/gpu/drm/tiny/hx8357d.c
@@ -0,0 +1,304 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * DRM driver for the HX8357D LCD controller
+ *
+ * Copyright 2018 Broadcom
+ * Copyright 2018 David Lechner <david@lechnology.com>
+ * Copyright 2016 Noralf Trønnes
+ * Copyright (C) 2015 Adafruit Industries
+ * Copyright (C) 2013 Christian Vogelgsang
+ */
+
+#include <linux/backlight.h>
+#include <linux/delay.h>
+#include <linux/gpio/consumer.h>
+#include <linux/module.h>
+#include <linux/property.h>
+#include <linux/spi/spi.h>
+
+#include <drm/drm_atomic_helper.h>
+#include <drm/drm_drv.h>
+#include <drm/drm_fb_helper.h>
+#include <drm/drm_gem_cma_helper.h>
+#include <drm/drm_gem_framebuffer_helper.h>
+#include <drm/drm_mipi_dbi.h>
+#include <drm/drm_modeset_helper.h>
+#include <video/mipi_display.h>
+
+#define HX8357D_SETOSC 0xb0
+#define HX8357D_SETPOWER 0xb1
+#define HX8357D_SETRGB 0xb3
+#define HX8357D_SETCYC 0xb3
+#define HX8357D_SETCOM 0xb6
+#define HX8357D_SETEXTC 0xb9
+#define HX8357D_SETSTBA 0xc0
+#define HX8357D_SETPANEL 0xcc
+#define HX8357D_SETGAMMA 0xe0
+
+#define HX8357D_MADCTL_MY  0x80
+#define HX8357D_MADCTL_MX  0x40
+#define HX8357D_MADCTL_MV  0x20
+#define HX8357D_MADCTL_ML  0x10
+#define HX8357D_MADCTL_RGB 0x00
+#define HX8357D_MADCTL_BGR 0x08
+#define HX8357D_MADCTL_MH  0x04
+
+static void yx240qv29_enable(struct drm_simple_display_pipe *pipe,
+			     struct drm_crtc_state *crtc_state,
+			     struct drm_plane_state *plane_state)
+{
+	struct mipi_dbi_dev *dbidev = drm_to_mipi_dbi_dev(pipe->crtc.dev);
+	struct mipi_dbi *dbi = &dbidev->dbi;
+	u8 addr_mode;
+	int ret, idx;
+
+	if (!drm_dev_enter(pipe->crtc.dev, &idx))
+		return;
+
+	DRM_DEBUG_KMS("\n");
+
+	ret = mipi_dbi_poweron_conditional_reset(dbidev);
+	if (ret < 0)
+		goto out_exit;
+	if (ret == 1)
+		goto out_enable;
+
+	/* setextc */
+	mipi_dbi_command(dbi, HX8357D_SETEXTC, 0xFF, 0x83, 0x57);
+	msleep(150);
+
+	/* setRGB which also enables SDO */
+	mipi_dbi_command(dbi, HX8357D_SETRGB, 0x00, 0x00, 0x06, 0x06);
+
+	/* -1.52V */
+	mipi_dbi_command(dbi, HX8357D_SETCOM, 0x25);
+
+	/* Normal mode 70Hz, Idle mode 55 Hz */
+	mipi_dbi_command(dbi, HX8357D_SETOSC, 0x68);
+
+	/* Set Panel - BGR, Gate direction swapped */
+	mipi_dbi_command(dbi, HX8357D_SETPANEL, 0x05);
+
+	mipi_dbi_command(dbi, HX8357D_SETPOWER,
+			 0x00,  /* Not deep standby */
+			 0x15,  /* BT */
+			 0x1C,  /* VSPR */
+			 0x1C,  /* VSNR */
+			 0x83,  /* AP */
+			 0xAA);  /* FS */
+
+	mipi_dbi_command(dbi, HX8357D_SETSTBA,
+			 0x50,  /* OPON normal */
+			 0x50,  /* OPON idle */
+			 0x01,  /* STBA */
+			 0x3C,  /* STBA */
+			 0x1E,  /* STBA */
+			 0x08);  /* GEN */
+
+	mipi_dbi_command(dbi, HX8357D_SETCYC,
+			 0x02,  /* NW 0x02 */
+			 0x40,  /* RTN */
+			 0x00,  /* DIV */
+			 0x2A,  /* DUM */
+			 0x2A,  /* DUM */
+			 0x0D,  /* GDON */
+			 0x78);  /* GDOFF */
+
+	mipi_dbi_command(dbi, HX8357D_SETGAMMA,
+			 0x02,
+			 0x0A,
+			 0x11,
+			 0x1d,
+			 0x23,
+			 0x35,
+			 0x41,
+			 0x4b,
+			 0x4b,
+			 0x42,
+			 0x3A,
+			 0x27,
+			 0x1B,
+			 0x08,
+			 0x09,
+			 0x03,
+			 0x02,
+			 0x0A,
+			 0x11,
+			 0x1d,
+			 0x23,
+			 0x35,
+			 0x41,
+			 0x4b,
+			 0x4b,
+			 0x42,
+			 0x3A,
+			 0x27,
+			 0x1B,
+			 0x08,
+			 0x09,
+			 0x03,
+			 0x00,
+			 0x01);
+
+	/* 16 bit */
+	mipi_dbi_command(dbi, MIPI_DCS_SET_PIXEL_FORMAT,
+			 MIPI_DCS_PIXEL_FMT_16BIT);
+
+	/* TE off */
+	mipi_dbi_command(dbi, MIPI_DCS_SET_TEAR_ON, 0x00);
+
+	/* tear line */
+	mipi_dbi_command(dbi, MIPI_DCS_SET_TEAR_SCANLINE, 0x00, 0x02);
+
+	/* Exit Sleep */
+	mipi_dbi_command(dbi, MIPI_DCS_EXIT_SLEEP_MODE);
+	msleep(150);
+
+	/* display on */
+	mipi_dbi_command(dbi, MIPI_DCS_SET_DISPLAY_ON);
+	usleep_range(5000, 7000);
+
+out_enable:
+	switch (dbidev->rotation) {
+	default:
+		addr_mode = HX8357D_MADCTL_MX | HX8357D_MADCTL_MY;
+		break;
+	case 90:
+		addr_mode = HX8357D_MADCTL_MV | HX8357D_MADCTL_MY;
+		break;
+	case 180:
+		addr_mode = 0;
+		break;
+	case 270:
+		addr_mode = HX8357D_MADCTL_MV | HX8357D_MADCTL_MX;
+		break;
+	}
+	mipi_dbi_command(dbi, MIPI_DCS_SET_ADDRESS_MODE, addr_mode);
+	mipi_dbi_enable_flush(dbidev, crtc_state, plane_state);
+out_exit:
+	drm_dev_exit(idx);
+}
+
+static const struct drm_simple_display_pipe_funcs hx8357d_pipe_funcs = {
+	.enable = yx240qv29_enable,
+	.disable = mipi_dbi_pipe_disable,
+	.update = mipi_dbi_pipe_update,
+	.prepare_fb = drm_gem_fb_simple_display_pipe_prepare_fb,
+};
+
+static const struct drm_display_mode yx350hv15_mode = {
+	DRM_SIMPLE_MODE(320, 480, 60, 75),
+};
+
+DEFINE_DRM_GEM_CMA_FOPS(hx8357d_fops);
+
+static struct drm_driver hx8357d_driver = {
+	.driver_features	= DRIVER_GEM | DRIVER_MODESET | DRIVER_ATOMIC,
+	.fops			= &hx8357d_fops,
+	.release		= mipi_dbi_release,
+	DRM_GEM_CMA_VMAP_DRIVER_OPS,
+	.debugfs_init		= mipi_dbi_debugfs_init,
+	.name			= "hx8357d",
+	.desc			= "HX8357D",
+	.date			= "20181023",
+	.major			= 1,
+	.minor			= 0,
+};
+
+static const struct of_device_id hx8357d_of_match[] = {
+	{ .compatible = "adafruit,yx350hv15" },
+	{ }
+};
+MODULE_DEVICE_TABLE(of, hx8357d_of_match);
+
+static const struct spi_device_id hx8357d_id[] = {
+	{ "yx350hv15", 0 },
+	{ }
+};
+MODULE_DEVICE_TABLE(spi, hx8357d_id);
+
+static int hx8357d_probe(struct spi_device *spi)
+{
+	struct device *dev = &spi->dev;
+	struct mipi_dbi_dev *dbidev;
+	struct drm_device *drm;
+	struct gpio_desc *dc;
+	u32 rotation = 0;
+	int ret;
+
+	dbidev = kzalloc(sizeof(*dbidev), GFP_KERNEL);
+	if (!dbidev)
+		return -ENOMEM;
+
+	drm = &dbidev->drm;
+	ret = devm_drm_dev_init(dev, drm, &hx8357d_driver);
+	if (ret) {
+		kfree(dbidev);
+		return ret;
+	}
+
+	drm_mode_config_init(drm);
+
+	dc = devm_gpiod_get(dev, "dc", GPIOD_OUT_LOW);
+	if (IS_ERR(dc)) {
+		DRM_DEV_ERROR(dev, "Failed to get gpio 'dc'\n");
+		return PTR_ERR(dc);
+	}
+
+	dbidev->backlight = devm_of_find_backlight(dev);
+	if (IS_ERR(dbidev->backlight))
+		return PTR_ERR(dbidev->backlight);
+
+	device_property_read_u32(dev, "rotation", &rotation);
+
+	ret = mipi_dbi_spi_init(spi, &dbidev->dbi, dc);
+	if (ret)
+		return ret;
+
+	ret = mipi_dbi_dev_init(dbidev, &hx8357d_pipe_funcs, &yx350hv15_mode, rotation);
+	if (ret)
+		return ret;
+
+	drm_mode_config_reset(drm);
+
+	ret = drm_dev_register(drm, 0);
+	if (ret)
+		return ret;
+
+	spi_set_drvdata(spi, drm);
+
+	drm_fbdev_generic_setup(drm, 0);
+
+	return 0;
+}
+
+static int hx8357d_remove(struct spi_device *spi)
+{
+	struct drm_device *drm = spi_get_drvdata(spi);
+
+	drm_dev_unplug(drm);
+	drm_atomic_helper_shutdown(drm);
+
+	return 0;
+}
+
+static void hx8357d_shutdown(struct spi_device *spi)
+{
+	drm_atomic_helper_shutdown(spi_get_drvdata(spi));
+}
+
+static struct spi_driver hx8357d_spi_driver = {
+	.driver = {
+		.name = "hx8357d",
+		.of_match_table = hx8357d_of_match,
+	},
+	.id_table = hx8357d_id,
+	.probe = hx8357d_probe,
+	.remove = hx8357d_remove,
+	.shutdown = hx8357d_shutdown,
+};
+module_spi_driver(hx8357d_spi_driver);
+
+MODULE_DESCRIPTION("HX8357D DRM driver");
+MODULE_AUTHOR("Eric Anholt <eric@anholt.net>");
+MODULE_LICENSE("GPL");
diff --git a/drivers/gpu/drm/tiny/ili9225.c b/drivers/gpu/drm/tiny/ili9225.c
new file mode 100644
index 000000000000..c66acc566c2b
--- /dev/null
+++ b/drivers/gpu/drm/tiny/ili9225.c
@@ -0,0 +1,470 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * DRM driver for Ilitek ILI9225 panels
+ *
+ * Copyright 2017 David Lechner <david@lechnology.com>
+ *
+ * Some code copied from mipi-dbi.c
+ * Copyright 2016 Noralf Trønnes
+ */
+
+#include <linux/delay.h>
+#include <linux/dma-buf.h>
+#include <linux/gpio/consumer.h>
+#include <linux/module.h>
+#include <linux/property.h>
+#include <linux/spi/spi.h>
+#include <video/mipi_display.h>
+
+#include <drm/drm_atomic_helper.h>
+#include <drm/drm_damage_helper.h>
+#include <drm/drm_drv.h>
+#include <drm/drm_fb_cma_helper.h>
+#include <drm/drm_fb_helper.h>
+#include <drm/drm_fourcc.h>
+#include <drm/drm_gem_cma_helper.h>
+#include <drm/drm_gem_framebuffer_helper.h>
+#include <drm/drm_mipi_dbi.h>
+#include <drm/drm_rect.h>
+#include <drm/drm_vblank.h>
+
+#define ILI9225_DRIVER_READ_CODE	0x00
+#define ILI9225_DRIVER_OUTPUT_CONTROL	0x01
+#define ILI9225_LCD_AC_DRIVING_CONTROL	0x02
+#define ILI9225_ENTRY_MODE		0x03
+#define ILI9225_DISPLAY_CONTROL_1	0x07
+#define ILI9225_BLANK_PERIOD_CONTROL_1	0x08
+#define ILI9225_FRAME_CYCLE_CONTROL	0x0b
+#define ILI9225_INTERFACE_CONTROL	0x0c
+#define ILI9225_OSCILLATION_CONTROL	0x0f
+#define ILI9225_POWER_CONTROL_1		0x10
+#define ILI9225_POWER_CONTROL_2		0x11
+#define ILI9225_POWER_CONTROL_3		0x12
+#define ILI9225_POWER_CONTROL_4		0x13
+#define ILI9225_POWER_CONTROL_5		0x14
+#define ILI9225_VCI_RECYCLING		0x15
+#define ILI9225_RAM_ADDRESS_SET_1	0x20
+#define ILI9225_RAM_ADDRESS_SET_2	0x21
+#define ILI9225_WRITE_DATA_TO_GRAM	0x22
+#define ILI9225_SOFTWARE_RESET		0x28
+#define ILI9225_GATE_SCAN_CONTROL	0x30
+#define ILI9225_VERTICAL_SCROLL_1	0x31
+#define ILI9225_VERTICAL_SCROLL_2	0x32
+#define ILI9225_VERTICAL_SCROLL_3	0x33
+#define ILI9225_PARTIAL_DRIVING_POS_1	0x34
+#define ILI9225_PARTIAL_DRIVING_POS_2	0x35
+#define ILI9225_HORIZ_WINDOW_ADDR_1	0x36
+#define ILI9225_HORIZ_WINDOW_ADDR_2	0x37
+#define ILI9225_VERT_WINDOW_ADDR_1	0x38
+#define ILI9225_VERT_WINDOW_ADDR_2	0x39
+#define ILI9225_GAMMA_CONTROL_1		0x50
+#define ILI9225_GAMMA_CONTROL_2		0x51
+#define ILI9225_GAMMA_CONTROL_3		0x52
+#define ILI9225_GAMMA_CONTROL_4		0x53
+#define ILI9225_GAMMA_CONTROL_5		0x54
+#define ILI9225_GAMMA_CONTROL_6		0x55
+#define ILI9225_GAMMA_CONTROL_7		0x56
+#define ILI9225_GAMMA_CONTROL_8		0x57
+#define ILI9225_GAMMA_CONTROL_9		0x58
+#define ILI9225_GAMMA_CONTROL_10	0x59
+
+static inline int ili9225_command(struct mipi_dbi *dbi, u8 cmd, u16 data)
+{
+	u8 par[2] = { data >> 8, data & 0xff };
+
+	return mipi_dbi_command_buf(dbi, cmd, par, 2);
+}
+
+static void ili9225_fb_dirty(struct drm_framebuffer *fb, struct drm_rect *rect)
+{
+	struct drm_gem_cma_object *cma_obj = drm_fb_cma_get_gem_obj(fb, 0);
+	struct mipi_dbi_dev *dbidev = drm_to_mipi_dbi_dev(fb->dev);
+	unsigned int height = rect->y2 - rect->y1;
+	unsigned int width = rect->x2 - rect->x1;
+	struct mipi_dbi *dbi = &dbidev->dbi;
+	bool swap = dbi->swap_bytes;
+	u16 x_start, y_start;
+	u16 x1, x2, y1, y2;
+	int idx, ret = 0;
+	bool full;
+	void *tr;
+
+	if (!dbidev->enabled)
+		return;
+
+	if (!drm_dev_enter(fb->dev, &idx))
+		return;
+
+	full = width == fb->width && height == fb->height;
+
+	DRM_DEBUG_KMS("Flushing [FB:%d] " DRM_RECT_FMT "\n", fb->base.id, DRM_RECT_ARG(rect));
+
+	if (!dbi->dc || !full || swap ||
+	    fb->format->format == DRM_FORMAT_XRGB8888) {
+		tr = dbidev->tx_buf;
+		ret = mipi_dbi_buf_copy(dbidev->tx_buf, fb, rect, swap);
+		if (ret)
+			goto err_msg;
+	} else {
+		tr = cma_obj->vaddr;
+	}
+
+	switch (dbidev->rotation) {
+	default:
+		x1 = rect->x1;
+		x2 = rect->x2 - 1;
+		y1 = rect->y1;
+		y2 = rect->y2 - 1;
+		x_start = x1;
+		y_start = y1;
+		break;
+	case 90:
+		x1 = rect->y1;
+		x2 = rect->y2 - 1;
+		y1 = fb->width - rect->x2;
+		y2 = fb->width - rect->x1 - 1;
+		x_start = x1;
+		y_start = y2;
+		break;
+	case 180:
+		x1 = fb->width - rect->x2;
+		x2 = fb->width - rect->x1 - 1;
+		y1 = fb->height - rect->y2;
+		y2 = fb->height - rect->y1 - 1;
+		x_start = x2;
+		y_start = y2;
+		break;
+	case 270:
+		x1 = fb->height - rect->y2;
+		x2 = fb->height - rect->y1 - 1;
+		y1 = rect->x1;
+		y2 = rect->x2 - 1;
+		x_start = x2;
+		y_start = y1;
+		break;
+	}
+
+	ili9225_command(dbi, ILI9225_HORIZ_WINDOW_ADDR_1, x2);
+	ili9225_command(dbi, ILI9225_HORIZ_WINDOW_ADDR_2, x1);
+	ili9225_command(dbi, ILI9225_VERT_WINDOW_ADDR_1, y2);
+	ili9225_command(dbi, ILI9225_VERT_WINDOW_ADDR_2, y1);
+
+	ili9225_command(dbi, ILI9225_RAM_ADDRESS_SET_1, x_start);
+	ili9225_command(dbi, ILI9225_RAM_ADDRESS_SET_2, y_start);
+
+	ret = mipi_dbi_command_buf(dbi, ILI9225_WRITE_DATA_TO_GRAM, tr,
+				   width * height * 2);
+err_msg:
+	if (ret)
+		dev_err_once(fb->dev->dev, "Failed to update display %d\n", ret);
+
+	drm_dev_exit(idx);
+}
+
+static void ili9225_pipe_update(struct drm_simple_display_pipe *pipe,
+				struct drm_plane_state *old_state)
+{
+	struct drm_plane_state *state = pipe->plane.state;
+	struct drm_crtc *crtc = &pipe->crtc;
+	struct drm_rect rect;
+
+	if (drm_atomic_helper_damage_merged(old_state, state, &rect))
+		ili9225_fb_dirty(state->fb, &rect);
+
+	if (crtc->state->event) {
+		spin_lock_irq(&crtc->dev->event_lock);
+		drm_crtc_send_vblank_event(crtc, crtc->state->event);
+		spin_unlock_irq(&crtc->dev->event_lock);
+		crtc->state->event = NULL;
+	}
+}
+
+static void ili9225_pipe_enable(struct drm_simple_display_pipe *pipe,
+				struct drm_crtc_state *crtc_state,
+				struct drm_plane_state *plane_state)
+{
+	struct mipi_dbi_dev *dbidev = drm_to_mipi_dbi_dev(pipe->crtc.dev);
+	struct drm_framebuffer *fb = plane_state->fb;
+	struct device *dev = pipe->crtc.dev->dev;
+	struct mipi_dbi *dbi = &dbidev->dbi;
+	struct drm_rect rect = {
+		.x1 = 0,
+		.x2 = fb->width,
+		.y1 = 0,
+		.y2 = fb->height,
+	};
+	int ret, idx;
+	u8 am_id;
+
+	if (!drm_dev_enter(pipe->crtc.dev, &idx))
+		return;
+
+	DRM_DEBUG_KMS("\n");
+
+	mipi_dbi_hw_reset(dbi);
+
+	/*
+	 * There don't seem to be two example init sequences that match, so
+	 * using the one from the popular Arduino library for this display.
+	 * https://github.com/Nkawu/TFT_22_ILI9225/blob/master/src/TFT_22_ILI9225.cpp
+	 */
+
+	ret = ili9225_command(dbi, ILI9225_POWER_CONTROL_1, 0x0000);
+	if (ret) {
+		DRM_DEV_ERROR(dev, "Error sending command %d\n", ret);
+		goto out_exit;
+	}
+	ili9225_command(dbi, ILI9225_POWER_CONTROL_2, 0x0000);
+	ili9225_command(dbi, ILI9225_POWER_CONTROL_3, 0x0000);
+	ili9225_command(dbi, ILI9225_POWER_CONTROL_4, 0x0000);
+	ili9225_command(dbi, ILI9225_POWER_CONTROL_5, 0x0000);
+
+	msleep(40);
+
+	ili9225_command(dbi, ILI9225_POWER_CONTROL_2, 0x0018);
+	ili9225_command(dbi, ILI9225_POWER_CONTROL_3, 0x6121);
+	ili9225_command(dbi, ILI9225_POWER_CONTROL_4, 0x006f);
+	ili9225_command(dbi, ILI9225_POWER_CONTROL_5, 0x495f);
+	ili9225_command(dbi, ILI9225_POWER_CONTROL_1, 0x0800);
+
+	msleep(10);
+
+	ili9225_command(dbi, ILI9225_POWER_CONTROL_2, 0x103b);
+
+	msleep(50);
+
+	switch (dbidev->rotation) {
+	default:
+		am_id = 0x30;
+		break;
+	case 90:
+		am_id = 0x18;
+		break;
+	case 180:
+		am_id = 0x00;
+		break;
+	case 270:
+		am_id = 0x28;
+		break;
+	}
+	ili9225_command(dbi, ILI9225_DRIVER_OUTPUT_CONTROL, 0x011c);
+	ili9225_command(dbi, ILI9225_LCD_AC_DRIVING_CONTROL, 0x0100);
+	ili9225_command(dbi, ILI9225_ENTRY_MODE, 0x1000 | am_id);
+	ili9225_command(dbi, ILI9225_DISPLAY_CONTROL_1, 0x0000);
+	ili9225_command(dbi, ILI9225_BLANK_PERIOD_CONTROL_1, 0x0808);
+	ili9225_command(dbi, ILI9225_FRAME_CYCLE_CONTROL, 0x1100);
+	ili9225_command(dbi, ILI9225_INTERFACE_CONTROL, 0x0000);
+	ili9225_command(dbi, ILI9225_OSCILLATION_CONTROL, 0x0d01);
+	ili9225_command(dbi, ILI9225_VCI_RECYCLING, 0x0020);
+	ili9225_command(dbi, ILI9225_RAM_ADDRESS_SET_1, 0x0000);
+	ili9225_command(dbi, ILI9225_RAM_ADDRESS_SET_2, 0x0000);
+
+	ili9225_command(dbi, ILI9225_GATE_SCAN_CONTROL, 0x0000);
+	ili9225_command(dbi, ILI9225_VERTICAL_SCROLL_1, 0x00db);
+	ili9225_command(dbi, ILI9225_VERTICAL_SCROLL_2, 0x0000);
+	ili9225_command(dbi, ILI9225_VERTICAL_SCROLL_3, 0x0000);
+	ili9225_command(dbi, ILI9225_PARTIAL_DRIVING_POS_1, 0x00db);
+	ili9225_command(dbi, ILI9225_PARTIAL_DRIVING_POS_2, 0x0000);
+
+	ili9225_command(dbi, ILI9225_GAMMA_CONTROL_1, 0x0000);
+	ili9225_command(dbi, ILI9225_GAMMA_CONTROL_2, 0x0808);
+	ili9225_command(dbi, ILI9225_GAMMA_CONTROL_3, 0x080a);
+	ili9225_command(dbi, ILI9225_GAMMA_CONTROL_4, 0x000a);
+	ili9225_command(dbi, ILI9225_GAMMA_CONTROL_5, 0x0a08);
+	ili9225_command(dbi, ILI9225_GAMMA_CONTROL_6, 0x0808);
+	ili9225_command(dbi, ILI9225_GAMMA_CONTROL_7, 0x0000);
+	ili9225_command(dbi, ILI9225_GAMMA_CONTROL_8, 0x0a00);
+	ili9225_command(dbi, ILI9225_GAMMA_CONTROL_9, 0x0710);
+	ili9225_command(dbi, ILI9225_GAMMA_CONTROL_10, 0x0710);
+
+	ili9225_command(dbi, ILI9225_DISPLAY_CONTROL_1, 0x0012);
+
+	msleep(50);
+
+	ili9225_command(dbi, ILI9225_DISPLAY_CONTROL_1, 0x1017);
+
+	dbidev->enabled = true;
+	ili9225_fb_dirty(fb, &rect);
+out_exit:
+	drm_dev_exit(idx);
+}
+
+static void ili9225_pipe_disable(struct drm_simple_display_pipe *pipe)
+{
+	struct mipi_dbi_dev *dbidev = drm_to_mipi_dbi_dev(pipe->crtc.dev);
+	struct mipi_dbi *dbi = &dbidev->dbi;
+
+	DRM_DEBUG_KMS("\n");
+
+	/*
+	 * This callback is not protected by drm_dev_enter/exit since we want to
+	 * turn off the display on regular driver unload. It's highly unlikely
+	 * that the underlying SPI controller is gone should this be called after
+	 * unplug.
+	 */
+
+	if (!dbidev->enabled)
+		return;
+
+	ili9225_command(dbi, ILI9225_DISPLAY_CONTROL_1, 0x0000);
+	msleep(50);
+	ili9225_command(dbi, ILI9225_POWER_CONTROL_2, 0x0007);
+	msleep(50);
+	ili9225_command(dbi, ILI9225_POWER_CONTROL_1, 0x0a02);
+
+	dbidev->enabled = false;
+}
+
+static int ili9225_dbi_command(struct mipi_dbi *dbi, u8 *cmd, u8 *par,
+			       size_t num)
+{
+	struct spi_device *spi = dbi->spi;
+	unsigned int bpw = 8;
+	u32 speed_hz;
+	int ret;
+
+	gpiod_set_value_cansleep(dbi->dc, 0);
+	speed_hz = mipi_dbi_spi_cmd_max_speed(spi, 1);
+	ret = mipi_dbi_spi_transfer(spi, speed_hz, 8, cmd, 1);
+	if (ret || !num)
+		return ret;
+
+	if (*cmd == ILI9225_WRITE_DATA_TO_GRAM && !dbi->swap_bytes)
+		bpw = 16;
+
+	gpiod_set_value_cansleep(dbi->dc, 1);
+	speed_hz = mipi_dbi_spi_cmd_max_speed(spi, num);
+
+	return mipi_dbi_spi_transfer(spi, speed_hz, bpw, par, num);
+}
+
+static const struct drm_simple_display_pipe_funcs ili9225_pipe_funcs = {
+	.enable		= ili9225_pipe_enable,
+	.disable	= ili9225_pipe_disable,
+	.update		= ili9225_pipe_update,
+	.prepare_fb	= drm_gem_fb_simple_display_pipe_prepare_fb,
+};
+
+static const struct drm_display_mode ili9225_mode = {
+	DRM_SIMPLE_MODE(176, 220, 35, 44),
+};
+
+DEFINE_DRM_GEM_CMA_FOPS(ili9225_fops);
+
+static struct drm_driver ili9225_driver = {
+	.driver_features	= DRIVER_GEM | DRIVER_MODESET | DRIVER_ATOMIC,
+	.fops			= &ili9225_fops,
+	.release		= mipi_dbi_release,
+	DRM_GEM_CMA_VMAP_DRIVER_OPS,
+	.name			= "ili9225",
+	.desc			= "Ilitek ILI9225",
+	.date			= "20171106",
+	.major			= 1,
+	.minor			= 0,
+};
+
+static const struct of_device_id ili9225_of_match[] = {
+	{ .compatible = "vot,v220hf01a-t" },
+	{},
+};
+MODULE_DEVICE_TABLE(of, ili9225_of_match);
+
+static const struct spi_device_id ili9225_id[] = {
+	{ "v220hf01a-t", 0 },
+	{ },
+};
+MODULE_DEVICE_TABLE(spi, ili9225_id);
+
+static int ili9225_probe(struct spi_device *spi)
+{
+	struct device *dev = &spi->dev;
+	struct mipi_dbi_dev *dbidev;
+	struct drm_device *drm;
+	struct mipi_dbi *dbi;
+	struct gpio_desc *rs;
+	u32 rotation = 0;
+	int ret;
+
+	dbidev = kzalloc(sizeof(*dbidev), GFP_KERNEL);
+	if (!dbidev)
+		return -ENOMEM;
+
+	dbi = &dbidev->dbi;
+	drm = &dbidev->drm;
+	ret = devm_drm_dev_init(dev, drm, &ili9225_driver);
+	if (ret) {
+		kfree(dbidev);
+		return ret;
+	}
+
+	drm_mode_config_init(drm);
+
+	dbi->reset = devm_gpiod_get(dev, "reset", GPIOD_OUT_HIGH);
+	if (IS_ERR(dbi->reset)) {
+		DRM_DEV_ERROR(dev, "Failed to get gpio 'reset'\n");
+		return PTR_ERR(dbi->reset);
+	}
+
+	rs = devm_gpiod_get(dev, "rs", GPIOD_OUT_LOW);
+	if (IS_ERR(rs)) {
+		DRM_DEV_ERROR(dev, "Failed to get gpio 'rs'\n");
+		return PTR_ERR(rs);
+	}
+
+	device_property_read_u32(dev, "rotation", &rotation);
+
+	ret = mipi_dbi_spi_init(spi, dbi, rs);
+	if (ret)
+		return ret;
+
+	/* override the command function set in  mipi_dbi_spi_init() */
+	dbi->command = ili9225_dbi_command;
+
+	ret = mipi_dbi_dev_init(dbidev, &ili9225_pipe_funcs, &ili9225_mode, rotation);
+	if (ret)
+		return ret;
+
+	drm_mode_config_reset(drm);
+
+	ret = drm_dev_register(drm, 0);
+	if (ret)
+		return ret;
+
+	spi_set_drvdata(spi, drm);
+
+	drm_fbdev_generic_setup(drm, 0);
+
+	return 0;
+}
+
+static int ili9225_remove(struct spi_device *spi)
+{
+	struct drm_device *drm = spi_get_drvdata(spi);
+
+	drm_dev_unplug(drm);
+	drm_atomic_helper_shutdown(drm);
+
+	return 0;
+}
+
+static void ili9225_shutdown(struct spi_device *spi)
+{
+	drm_atomic_helper_shutdown(spi_get_drvdata(spi));
+}
+
+static struct spi_driver ili9225_spi_driver = {
+	.driver = {
+		.name = "ili9225",
+		.owner = THIS_MODULE,
+		.of_match_table = ili9225_of_match,
+	},
+	.id_table = ili9225_id,
+	.probe = ili9225_probe,
+	.remove = ili9225_remove,
+	.shutdown = ili9225_shutdown,
+};
+module_spi_driver(ili9225_spi_driver);
+
+MODULE_DESCRIPTION("Ilitek ILI9225 DRM driver");
+MODULE_AUTHOR("David Lechner <david@lechnology.com>");
+MODULE_LICENSE("GPL");
diff --git a/drivers/gpu/drm/tiny/ili9341.c b/drivers/gpu/drm/tiny/ili9341.c
new file mode 100644
index 000000000000..33b51dc7faa8
--- /dev/null
+++ b/drivers/gpu/drm/tiny/ili9341.c
@@ -0,0 +1,268 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * DRM driver for Ilitek ILI9341 panels
+ *
+ * Copyright 2018 David Lechner <david@lechnology.com>
+ *
+ * Based on mi0283qt.c:
+ * Copyright 2016 Noralf Trønnes
+ */
+
+#include <linux/backlight.h>
+#include <linux/delay.h>
+#include <linux/gpio/consumer.h>
+#include <linux/module.h>
+#include <linux/property.h>
+#include <linux/spi/spi.h>
+
+#include <drm/drm_atomic_helper.h>
+#include <drm/drm_drv.h>
+#include <drm/drm_fb_helper.h>
+#include <drm/drm_gem_cma_helper.h>
+#include <drm/drm_gem_framebuffer_helper.h>
+#include <drm/drm_mipi_dbi.h>
+#include <drm/drm_modeset_helper.h>
+#include <video/mipi_display.h>
+
+#define ILI9341_FRMCTR1		0xb1
+#define ILI9341_DISCTRL		0xb6
+#define ILI9341_ETMOD		0xb7
+
+#define ILI9341_PWCTRL1		0xc0
+#define ILI9341_PWCTRL2		0xc1
+#define ILI9341_VMCTRL1		0xc5
+#define ILI9341_VMCTRL2		0xc7
+#define ILI9341_PWCTRLA		0xcb
+#define ILI9341_PWCTRLB		0xcf
+
+#define ILI9341_PGAMCTRL	0xe0
+#define ILI9341_NGAMCTRL	0xe1
+#define ILI9341_DTCTRLA		0xe8
+#define ILI9341_DTCTRLB		0xea
+#define ILI9341_PWRSEQ		0xed
+
+#define ILI9341_EN3GAM		0xf2
+#define ILI9341_PUMPCTRL	0xf7
+
+#define ILI9341_MADCTL_BGR	BIT(3)
+#define ILI9341_MADCTL_MV	BIT(5)
+#define ILI9341_MADCTL_MX	BIT(6)
+#define ILI9341_MADCTL_MY	BIT(7)
+
+static void yx240qv29_enable(struct drm_simple_display_pipe *pipe,
+			     struct drm_crtc_state *crtc_state,
+			     struct drm_plane_state *plane_state)
+{
+	struct mipi_dbi_dev *dbidev = drm_to_mipi_dbi_dev(pipe->crtc.dev);
+	struct mipi_dbi *dbi = &dbidev->dbi;
+	u8 addr_mode;
+	int ret, idx;
+
+	if (!drm_dev_enter(pipe->crtc.dev, &idx))
+		return;
+
+	DRM_DEBUG_KMS("\n");
+
+	ret = mipi_dbi_poweron_conditional_reset(dbidev);
+	if (ret < 0)
+		goto out_exit;
+	if (ret == 1)
+		goto out_enable;
+
+	mipi_dbi_command(dbi, MIPI_DCS_SET_DISPLAY_OFF);
+
+	mipi_dbi_command(dbi, ILI9341_PWCTRLB, 0x00, 0xc1, 0x30);
+	mipi_dbi_command(dbi, ILI9341_PWRSEQ, 0x64, 0x03, 0x12, 0x81);
+	mipi_dbi_command(dbi, ILI9341_DTCTRLA, 0x85, 0x00, 0x78);
+	mipi_dbi_command(dbi, ILI9341_PWCTRLA, 0x39, 0x2c, 0x00, 0x34, 0x02);
+	mipi_dbi_command(dbi, ILI9341_PUMPCTRL, 0x20);
+	mipi_dbi_command(dbi, ILI9341_DTCTRLB, 0x00, 0x00);
+
+	/* Power Control */
+	mipi_dbi_command(dbi, ILI9341_PWCTRL1, 0x23);
+	mipi_dbi_command(dbi, ILI9341_PWCTRL2, 0x10);
+	/* VCOM */
+	mipi_dbi_command(dbi, ILI9341_VMCTRL1, 0x3e, 0x28);
+	mipi_dbi_command(dbi, ILI9341_VMCTRL2, 0x86);
+
+	/* Memory Access Control */
+	mipi_dbi_command(dbi, MIPI_DCS_SET_PIXEL_FORMAT, MIPI_DCS_PIXEL_FMT_16BIT);
+
+	/* Frame Rate */
+	mipi_dbi_command(dbi, ILI9341_FRMCTR1, 0x00, 0x1b);
+
+	/* Gamma */
+	mipi_dbi_command(dbi, ILI9341_EN3GAM, 0x00);
+	mipi_dbi_command(dbi, MIPI_DCS_SET_GAMMA_CURVE, 0x01);
+	mipi_dbi_command(dbi, ILI9341_PGAMCTRL,
+			 0x0f, 0x31, 0x2b, 0x0c, 0x0e, 0x08, 0x4e, 0xf1,
+			 0x37, 0x07, 0x10, 0x03, 0x0e, 0x09, 0x00);
+	mipi_dbi_command(dbi, ILI9341_NGAMCTRL,
+			 0x00, 0x0e, 0x14, 0x03, 0x11, 0x07, 0x31, 0xc1,
+			 0x48, 0x08, 0x0f, 0x0c, 0x31, 0x36, 0x0f);
+
+	/* DDRAM */
+	mipi_dbi_command(dbi, ILI9341_ETMOD, 0x07);
+
+	/* Display */
+	mipi_dbi_command(dbi, ILI9341_DISCTRL, 0x08, 0x82, 0x27, 0x00);
+	mipi_dbi_command(dbi, MIPI_DCS_EXIT_SLEEP_MODE);
+	msleep(100);
+
+	mipi_dbi_command(dbi, MIPI_DCS_SET_DISPLAY_ON);
+	msleep(100);
+
+out_enable:
+	switch (dbidev->rotation) {
+	default:
+		addr_mode = ILI9341_MADCTL_MX;
+		break;
+	case 90:
+		addr_mode = ILI9341_MADCTL_MV;
+		break;
+	case 180:
+		addr_mode = ILI9341_MADCTL_MY;
+		break;
+	case 270:
+		addr_mode = ILI9341_MADCTL_MV | ILI9341_MADCTL_MY |
+			    ILI9341_MADCTL_MX;
+		break;
+	}
+	addr_mode |= ILI9341_MADCTL_BGR;
+	mipi_dbi_command(dbi, MIPI_DCS_SET_ADDRESS_MODE, addr_mode);
+	mipi_dbi_enable_flush(dbidev, crtc_state, plane_state);
+out_exit:
+	drm_dev_exit(idx);
+}
+
+static const struct drm_simple_display_pipe_funcs ili9341_pipe_funcs = {
+	.enable = yx240qv29_enable,
+	.disable = mipi_dbi_pipe_disable,
+	.update = mipi_dbi_pipe_update,
+	.prepare_fb = drm_gem_fb_simple_display_pipe_prepare_fb,
+};
+
+static const struct drm_display_mode yx240qv29_mode = {
+	DRM_SIMPLE_MODE(240, 320, 37, 49),
+};
+
+DEFINE_DRM_GEM_CMA_FOPS(ili9341_fops);
+
+static struct drm_driver ili9341_driver = {
+	.driver_features	= DRIVER_GEM | DRIVER_MODESET | DRIVER_ATOMIC,
+	.fops			= &ili9341_fops,
+	.release		= mipi_dbi_release,
+	DRM_GEM_CMA_VMAP_DRIVER_OPS,
+	.debugfs_init		= mipi_dbi_debugfs_init,
+	.name			= "ili9341",
+	.desc			= "Ilitek ILI9341",
+	.date			= "20180514",
+	.major			= 1,
+	.minor			= 0,
+};
+
+static const struct of_device_id ili9341_of_match[] = {
+	{ .compatible = "adafruit,yx240qv29" },
+	{ }
+};
+MODULE_DEVICE_TABLE(of, ili9341_of_match);
+
+static const struct spi_device_id ili9341_id[] = {
+	{ "yx240qv29", 0 },
+	{ }
+};
+MODULE_DEVICE_TABLE(spi, ili9341_id);
+
+static int ili9341_probe(struct spi_device *spi)
+{
+	struct device *dev = &spi->dev;
+	struct mipi_dbi_dev *dbidev;
+	struct drm_device *drm;
+	struct mipi_dbi *dbi;
+	struct gpio_desc *dc;
+	u32 rotation = 0;
+	int ret;
+
+	dbidev = kzalloc(sizeof(*dbidev), GFP_KERNEL);
+	if (!dbidev)
+		return -ENOMEM;
+
+	dbi = &dbidev->dbi;
+	drm = &dbidev->drm;
+	ret = devm_drm_dev_init(dev, drm, &ili9341_driver);
+	if (ret) {
+		kfree(dbidev);
+		return ret;
+	}
+
+	drm_mode_config_init(drm);
+
+	dbi->reset = devm_gpiod_get_optional(dev, "reset", GPIOD_OUT_HIGH);
+	if (IS_ERR(dbi->reset)) {
+		DRM_DEV_ERROR(dev, "Failed to get gpio 'reset'\n");
+		return PTR_ERR(dbi->reset);
+	}
+
+	dc = devm_gpiod_get_optional(dev, "dc", GPIOD_OUT_LOW);
+	if (IS_ERR(dc)) {
+		DRM_DEV_ERROR(dev, "Failed to get gpio 'dc'\n");
+		return PTR_ERR(dc);
+	}
+
+	dbidev->backlight = devm_of_find_backlight(dev);
+	if (IS_ERR(dbidev->backlight))
+		return PTR_ERR(dbidev->backlight);
+
+	device_property_read_u32(dev, "rotation", &rotation);
+
+	ret = mipi_dbi_spi_init(spi, dbi, dc);
+	if (ret)
+		return ret;
+
+	ret = mipi_dbi_dev_init(dbidev, &ili9341_pipe_funcs, &yx240qv29_mode, rotation);
+	if (ret)
+		return ret;
+
+	drm_mode_config_reset(drm);
+
+	ret = drm_dev_register(drm, 0);
+	if (ret)
+		return ret;
+
+	spi_set_drvdata(spi, drm);
+
+	drm_fbdev_generic_setup(drm, 0);
+
+	return 0;
+}
+
+static int ili9341_remove(struct spi_device *spi)
+{
+	struct drm_device *drm = spi_get_drvdata(spi);
+
+	drm_dev_unplug(drm);
+	drm_atomic_helper_shutdown(drm);
+
+	return 0;
+}
+
+static void ili9341_shutdown(struct spi_device *spi)
+{
+	drm_atomic_helper_shutdown(spi_get_drvdata(spi));
+}
+
+static struct spi_driver ili9341_spi_driver = {
+	.driver = {
+		.name = "ili9341",
+		.of_match_table = ili9341_of_match,
+	},
+	.id_table = ili9341_id,
+	.probe = ili9341_probe,
+	.remove = ili9341_remove,
+	.shutdown = ili9341_shutdown,
+};
+module_spi_driver(ili9341_spi_driver);
+
+MODULE_DESCRIPTION("Ilitek ILI9341 DRM driver");
+MODULE_AUTHOR("David Lechner <david@lechnology.com>");
+MODULE_LICENSE("GPL");
diff --git a/drivers/gpu/drm/tiny/mi0283qt.c b/drivers/gpu/drm/tiny/mi0283qt.c
new file mode 100644
index 000000000000..e2cfd9a17143
--- /dev/null
+++ b/drivers/gpu/drm/tiny/mi0283qt.c
@@ -0,0 +1,294 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * DRM driver for Multi-Inno MI0283QT panels
+ *
+ * Copyright 2016 Noralf Trønnes
+ */
+
+#include <linux/backlight.h>
+#include <linux/delay.h>
+#include <linux/gpio/consumer.h>
+#include <linux/module.h>
+#include <linux/property.h>
+#include <linux/regulator/consumer.h>
+#include <linux/spi/spi.h>
+
+#include <drm/drm_atomic_helper.h>
+#include <drm/drm_drv.h>
+#include <drm/drm_fb_helper.h>
+#include <drm/drm_gem_cma_helper.h>
+#include <drm/drm_gem_framebuffer_helper.h>
+#include <drm/drm_mipi_dbi.h>
+#include <drm/drm_modeset_helper.h>
+#include <video/mipi_display.h>
+
+#define ILI9341_FRMCTR1		0xb1
+#define ILI9341_DISCTRL		0xb6
+#define ILI9341_ETMOD		0xb7
+
+#define ILI9341_PWCTRL1		0xc0
+#define ILI9341_PWCTRL2		0xc1
+#define ILI9341_VMCTRL1		0xc5
+#define ILI9341_VMCTRL2		0xc7
+#define ILI9341_PWCTRLA		0xcb
+#define ILI9341_PWCTRLB		0xcf
+
+#define ILI9341_PGAMCTRL	0xe0
+#define ILI9341_NGAMCTRL	0xe1
+#define ILI9341_DTCTRLA		0xe8
+#define ILI9341_DTCTRLB		0xea
+#define ILI9341_PWRSEQ		0xed
+
+#define ILI9341_EN3GAM		0xf2
+#define ILI9341_PUMPCTRL	0xf7
+
+#define ILI9341_MADCTL_BGR	BIT(3)
+#define ILI9341_MADCTL_MV	BIT(5)
+#define ILI9341_MADCTL_MX	BIT(6)
+#define ILI9341_MADCTL_MY	BIT(7)
+
+static void mi0283qt_enable(struct drm_simple_display_pipe *pipe,
+			    struct drm_crtc_state *crtc_state,
+			    struct drm_plane_state *plane_state)
+{
+	struct mipi_dbi_dev *dbidev = drm_to_mipi_dbi_dev(pipe->crtc.dev);
+	struct mipi_dbi *dbi = &dbidev->dbi;
+	u8 addr_mode;
+	int ret, idx;
+
+	if (!drm_dev_enter(pipe->crtc.dev, &idx))
+		return;
+
+	DRM_DEBUG_KMS("\n");
+
+	ret = mipi_dbi_poweron_conditional_reset(dbidev);
+	if (ret < 0)
+		goto out_exit;
+	if (ret == 1)
+		goto out_enable;
+
+	mipi_dbi_command(dbi, MIPI_DCS_SET_DISPLAY_OFF);
+
+	mipi_dbi_command(dbi, ILI9341_PWCTRLB, 0x00, 0x83, 0x30);
+	mipi_dbi_command(dbi, ILI9341_PWRSEQ, 0x64, 0x03, 0x12, 0x81);
+	mipi_dbi_command(dbi, ILI9341_DTCTRLA, 0x85, 0x01, 0x79);
+	mipi_dbi_command(dbi, ILI9341_PWCTRLA, 0x39, 0x2c, 0x00, 0x34, 0x02);
+	mipi_dbi_command(dbi, ILI9341_PUMPCTRL, 0x20);
+	mipi_dbi_command(dbi, ILI9341_DTCTRLB, 0x00, 0x00);
+
+	/* Power Control */
+	mipi_dbi_command(dbi, ILI9341_PWCTRL1, 0x26);
+	mipi_dbi_command(dbi, ILI9341_PWCTRL2, 0x11);
+	/* VCOM */
+	mipi_dbi_command(dbi, ILI9341_VMCTRL1, 0x35, 0x3e);
+	mipi_dbi_command(dbi, ILI9341_VMCTRL2, 0xbe);
+
+	/* Memory Access Control */
+	mipi_dbi_command(dbi, MIPI_DCS_SET_PIXEL_FORMAT, MIPI_DCS_PIXEL_FMT_16BIT);
+
+	/* Frame Rate */
+	mipi_dbi_command(dbi, ILI9341_FRMCTR1, 0x00, 0x1b);
+
+	/* Gamma */
+	mipi_dbi_command(dbi, ILI9341_EN3GAM, 0x08);
+	mipi_dbi_command(dbi, MIPI_DCS_SET_GAMMA_CURVE, 0x01);
+	mipi_dbi_command(dbi, ILI9341_PGAMCTRL,
+		       0x1f, 0x1a, 0x18, 0x0a, 0x0f, 0x06, 0x45, 0x87,
+		       0x32, 0x0a, 0x07, 0x02, 0x07, 0x05, 0x00);
+	mipi_dbi_command(dbi, ILI9341_NGAMCTRL,
+		       0x00, 0x25, 0x27, 0x05, 0x10, 0x09, 0x3a, 0x78,
+		       0x4d, 0x05, 0x18, 0x0d, 0x38, 0x3a, 0x1f);
+
+	/* DDRAM */
+	mipi_dbi_command(dbi, ILI9341_ETMOD, 0x07);
+
+	/* Display */
+	mipi_dbi_command(dbi, ILI9341_DISCTRL, 0x0a, 0x82, 0x27, 0x00);
+	mipi_dbi_command(dbi, MIPI_DCS_EXIT_SLEEP_MODE);
+	msleep(100);
+
+	mipi_dbi_command(dbi, MIPI_DCS_SET_DISPLAY_ON);
+	msleep(100);
+
+out_enable:
+	/* The PiTFT (ili9340) has a hardware reset circuit that
+	 * resets only on power-on and not on each reboot through
+	 * a gpio like the rpi-display does.
+	 * As a result, we need to always apply the rotation value
+	 * regardless of the display "on/off" state.
+	 */
+	switch (dbidev->rotation) {
+	default:
+		addr_mode = ILI9341_MADCTL_MV | ILI9341_MADCTL_MY |
+			    ILI9341_MADCTL_MX;
+		break;
+	case 90:
+		addr_mode = ILI9341_MADCTL_MY;
+		break;
+	case 180:
+		addr_mode = ILI9341_MADCTL_MV;
+		break;
+	case 270:
+		addr_mode = ILI9341_MADCTL_MX;
+		break;
+	}
+	addr_mode |= ILI9341_MADCTL_BGR;
+	mipi_dbi_command(dbi, MIPI_DCS_SET_ADDRESS_MODE, addr_mode);
+	mipi_dbi_enable_flush(dbidev, crtc_state, plane_state);
+out_exit:
+	drm_dev_exit(idx);
+}
+
+static const struct drm_simple_display_pipe_funcs mi0283qt_pipe_funcs = {
+	.enable = mi0283qt_enable,
+	.disable = mipi_dbi_pipe_disable,
+	.update = mipi_dbi_pipe_update,
+	.prepare_fb = drm_gem_fb_simple_display_pipe_prepare_fb,
+};
+
+static const struct drm_display_mode mi0283qt_mode = {
+	DRM_SIMPLE_MODE(320, 240, 58, 43),
+};
+
+DEFINE_DRM_GEM_CMA_FOPS(mi0283qt_fops);
+
+static struct drm_driver mi0283qt_driver = {
+	.driver_features	= DRIVER_GEM | DRIVER_MODESET | DRIVER_ATOMIC,
+	.fops			= &mi0283qt_fops,
+	.release		= mipi_dbi_release,
+	DRM_GEM_CMA_VMAP_DRIVER_OPS,
+	.debugfs_init		= mipi_dbi_debugfs_init,
+	.name			= "mi0283qt",
+	.desc			= "Multi-Inno MI0283QT",
+	.date			= "20160614",
+	.major			= 1,
+	.minor			= 0,
+};
+
+static const struct of_device_id mi0283qt_of_match[] = {
+	{ .compatible = "multi-inno,mi0283qt" },
+	{},
+};
+MODULE_DEVICE_TABLE(of, mi0283qt_of_match);
+
+static const struct spi_device_id mi0283qt_id[] = {
+	{ "mi0283qt", 0 },
+	{ },
+};
+MODULE_DEVICE_TABLE(spi, mi0283qt_id);
+
+static int mi0283qt_probe(struct spi_device *spi)
+{
+	struct device *dev = &spi->dev;
+	struct mipi_dbi_dev *dbidev;
+	struct drm_device *drm;
+	struct mipi_dbi *dbi;
+	struct gpio_desc *dc;
+	u32 rotation = 0;
+	int ret;
+
+	dbidev = kzalloc(sizeof(*dbidev), GFP_KERNEL);
+	if (!dbidev)
+		return -ENOMEM;
+
+	dbi = &dbidev->dbi;
+	drm = &dbidev->drm;
+	ret = devm_drm_dev_init(dev, drm, &mi0283qt_driver);
+	if (ret) {
+		kfree(dbidev);
+		return ret;
+	}
+
+	drm_mode_config_init(drm);
+
+	dbi->reset = devm_gpiod_get_optional(dev, "reset", GPIOD_OUT_HIGH);
+	if (IS_ERR(dbi->reset)) {
+		DRM_DEV_ERROR(dev, "Failed to get gpio 'reset'\n");
+		return PTR_ERR(dbi->reset);
+	}
+
+	dc = devm_gpiod_get_optional(dev, "dc", GPIOD_OUT_LOW);
+	if (IS_ERR(dc)) {
+		DRM_DEV_ERROR(dev, "Failed to get gpio 'dc'\n");
+		return PTR_ERR(dc);
+	}
+
+	dbidev->regulator = devm_regulator_get(dev, "power");
+	if (IS_ERR(dbidev->regulator))
+		return PTR_ERR(dbidev->regulator);
+
+	dbidev->backlight = devm_of_find_backlight(dev);
+	if (IS_ERR(dbidev->backlight))
+		return PTR_ERR(dbidev->backlight);
+
+	device_property_read_u32(dev, "rotation", &rotation);
+
+	ret = mipi_dbi_spi_init(spi, dbi, dc);
+	if (ret)
+		return ret;
+
+	ret = mipi_dbi_dev_init(dbidev, &mi0283qt_pipe_funcs, &mi0283qt_mode, rotation);
+	if (ret)
+		return ret;
+
+	drm_mode_config_reset(drm);
+
+	ret = drm_dev_register(drm, 0);
+	if (ret)
+		return ret;
+
+	spi_set_drvdata(spi, drm);
+
+	drm_fbdev_generic_setup(drm, 0);
+
+	return 0;
+}
+
+static int mi0283qt_remove(struct spi_device *spi)
+{
+	struct drm_device *drm = spi_get_drvdata(spi);
+
+	drm_dev_unplug(drm);
+	drm_atomic_helper_shutdown(drm);
+
+	return 0;
+}
+
+static void mi0283qt_shutdown(struct spi_device *spi)
+{
+	drm_atomic_helper_shutdown(spi_get_drvdata(spi));
+}
+
+static int __maybe_unused mi0283qt_pm_suspend(struct device *dev)
+{
+	return drm_mode_config_helper_suspend(dev_get_drvdata(dev));
+}
+
+static int __maybe_unused mi0283qt_pm_resume(struct device *dev)
+{
+	drm_mode_config_helper_resume(dev_get_drvdata(dev));
+
+	return 0;
+}
+
+static const struct dev_pm_ops mi0283qt_pm_ops = {
+	SET_SYSTEM_SLEEP_PM_OPS(mi0283qt_pm_suspend, mi0283qt_pm_resume)
+};
+
+static struct spi_driver mi0283qt_spi_driver = {
+	.driver = {
+		.name = "mi0283qt",
+		.owner = THIS_MODULE,
+		.of_match_table = mi0283qt_of_match,
+		.pm = &mi0283qt_pm_ops,
+	},
+	.id_table = mi0283qt_id,
+	.probe = mi0283qt_probe,
+	.remove = mi0283qt_remove,
+	.shutdown = mi0283qt_shutdown,
+};
+module_spi_driver(mi0283qt_spi_driver);
+
+MODULE_DESCRIPTION("Multi-Inno MI0283QT DRM driver");
+MODULE_AUTHOR("Noralf Trønnes");
+MODULE_LICENSE("GPL");
diff --git a/drivers/gpu/drm/tiny/repaper.c b/drivers/gpu/drm/tiny/repaper.c
new file mode 100644
index 000000000000..76d179200775
--- /dev/null
+++ b/drivers/gpu/drm/tiny/repaper.c
@@ -0,0 +1,1212 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * DRM driver for Pervasive Displays RePaper branded e-ink panels
+ *
+ * Copyright 2013-2017 Pervasive Displays, Inc.
+ * Copyright 2017 Noralf Trønnes
+ *
+ * The driver supports:
+ * Material Film: Aurora Mb (V231)
+ * Driver IC: G2 (eTC)
+ *
+ * The controller code was taken from the userspace driver:
+ * https://github.com/repaper/gratis
+ */
+
+#include <linux/delay.h>
+#include <linux/dma-buf.h>
+#include <linux/gpio/consumer.h>
+#include <linux/module.h>
+#include <linux/of_device.h>
+#include <linux/sched/clock.h>
+#include <linux/spi/spi.h>
+#include <linux/thermal.h>
+
+#include <drm/drm_atomic_helper.h>
+#include <drm/drm_connector.h>
+#include <drm/drm_damage_helper.h>
+#include <drm/drm_drv.h>
+#include <drm/drm_fb_cma_helper.h>
+#include <drm/drm_fb_helper.h>
+#include <drm/drm_format_helper.h>
+#include <drm/drm_gem_cma_helper.h>
+#include <drm/drm_gem_framebuffer_helper.h>
+#include <drm/drm_modes.h>
+#include <drm/drm_rect.h>
+#include <drm/drm_vblank.h>
+#include <drm/drm_probe_helper.h>
+#include <drm/drm_simple_kms_helper.h>
+
+#define REPAPER_RID_G2_COG_ID	0x12
+
+enum repaper_model {
+	E1144CS021 = 1,
+	E1190CS021,
+	E2200CS021,
+	E2271CS021,
+};
+
+enum repaper_stage {         /* Image pixel -> Display pixel */
+	REPAPER_COMPENSATE,  /* B -> W, W -> B (Current Image) */
+	REPAPER_WHITE,       /* B -> N, W -> W (Current Image) */
+	REPAPER_INVERSE,     /* B -> N, W -> B (New Image) */
+	REPAPER_NORMAL       /* B -> B, W -> W (New Image) */
+};
+
+enum repaper_epd_border_byte {
+	REPAPER_BORDER_BYTE_NONE,
+	REPAPER_BORDER_BYTE_ZERO,
+	REPAPER_BORDER_BYTE_SET,
+};
+
+struct repaper_epd {
+	struct drm_device drm;
+	struct drm_simple_display_pipe pipe;
+	const struct drm_display_mode *mode;
+	struct drm_connector connector;
+	struct spi_device *spi;
+
+	struct gpio_desc *panel_on;
+	struct gpio_desc *border;
+	struct gpio_desc *discharge;
+	struct gpio_desc *reset;
+	struct gpio_desc *busy;
+
+	struct thermal_zone_device *thermal;
+
+	unsigned int height;
+	unsigned int width;
+	unsigned int bytes_per_scan;
+	const u8 *channel_select;
+	unsigned int stage_time;
+	unsigned int factored_stage_time;
+	bool middle_scan;
+	bool pre_border_byte;
+	enum repaper_epd_border_byte border_byte;
+
+	u8 *line_buffer;
+	void *current_frame;
+
+	bool enabled;
+	bool cleared;
+	bool partial;
+};
+
+static inline struct repaper_epd *drm_to_epd(struct drm_device *drm)
+{
+	return container_of(drm, struct repaper_epd, drm);
+}
+
+static int repaper_spi_transfer(struct spi_device *spi, u8 header,
+				const void *tx, void *rx, size_t len)
+{
+	void *txbuf = NULL, *rxbuf = NULL;
+	struct spi_transfer tr[2] = {};
+	u8 *headerbuf;
+	int ret;
+
+	headerbuf = kmalloc(1, GFP_KERNEL);
+	if (!headerbuf)
+		return -ENOMEM;
+
+	headerbuf[0] = header;
+	tr[0].tx_buf = headerbuf;
+	tr[0].len = 1;
+
+	/* Stack allocated tx? */
+	if (tx && len <= 32) {
+		txbuf = kmemdup(tx, len, GFP_KERNEL);
+		if (!txbuf) {
+			ret = -ENOMEM;
+			goto out_free;
+		}
+	}
+
+	if (rx) {
+		rxbuf = kmalloc(len, GFP_KERNEL);
+		if (!rxbuf) {
+			ret = -ENOMEM;
+			goto out_free;
+		}
+	}
+
+	tr[1].tx_buf = txbuf ? txbuf : tx;
+	tr[1].rx_buf = rxbuf;
+	tr[1].len = len;
+
+	ndelay(80);
+	ret = spi_sync_transfer(spi, tr, 2);
+	if (rx && !ret)
+		memcpy(rx, rxbuf, len);
+
+out_free:
+	kfree(headerbuf);
+	kfree(txbuf);
+	kfree(rxbuf);
+
+	return ret;
+}
+
+static int repaper_write_buf(struct spi_device *spi, u8 reg,
+			     const u8 *buf, size_t len)
+{
+	int ret;
+
+	ret = repaper_spi_transfer(spi, 0x70, &reg, NULL, 1);
+	if (ret)
+		return ret;
+
+	return repaper_spi_transfer(spi, 0x72, buf, NULL, len);
+}
+
+static int repaper_write_val(struct spi_device *spi, u8 reg, u8 val)
+{
+	return repaper_write_buf(spi, reg, &val, 1);
+}
+
+static int repaper_read_val(struct spi_device *spi, u8 reg)
+{
+	int ret;
+	u8 val;
+
+	ret = repaper_spi_transfer(spi, 0x70, &reg, NULL, 1);
+	if (ret)
+		return ret;
+
+	ret = repaper_spi_transfer(spi, 0x73, NULL, &val, 1);
+
+	return ret ? ret : val;
+}
+
+static int repaper_read_id(struct spi_device *spi)
+{
+	int ret;
+	u8 id;
+
+	ret = repaper_spi_transfer(spi, 0x71, NULL, &id, 1);
+
+	return ret ? ret : id;
+}
+
+static void repaper_spi_mosi_low(struct spi_device *spi)
+{
+	const u8 buf[1] = { 0 };
+
+	spi_write(spi, buf, 1);
+}
+
+/* pixels on display are numbered from 1 so even is actually bits 1,3,5,... */
+static void repaper_even_pixels(struct repaper_epd *epd, u8 **pp,
+				const u8 *data, u8 fixed_value, const u8 *mask,
+				enum repaper_stage stage)
+{
+	unsigned int b;
+
+	for (b = 0; b < (epd->width / 8); b++) {
+		if (data) {
+			u8 pixels = data[b] & 0xaa;
+			u8 pixel_mask = 0xff;
+			u8 p1, p2, p3, p4;
+
+			if (mask) {
+				pixel_mask = (mask[b] ^ pixels) & 0xaa;
+				pixel_mask |= pixel_mask >> 1;
+			}
+
+			switch (stage) {
+			case REPAPER_COMPENSATE: /* B -> W, W -> B (Current) */
+				pixels = 0xaa | ((pixels ^ 0xaa) >> 1);
+				break;
+			case REPAPER_WHITE:      /* B -> N, W -> W (Current) */
+				pixels = 0x55 + ((pixels ^ 0xaa) >> 1);
+				break;
+			case REPAPER_INVERSE:    /* B -> N, W -> B (New) */
+				pixels = 0x55 | (pixels ^ 0xaa);
+				break;
+			case REPAPER_NORMAL:     /* B -> B, W -> W (New) */
+				pixels = 0xaa | (pixels >> 1);
+				break;
+			}
+
+			pixels = (pixels & pixel_mask) | (~pixel_mask & 0x55);
+			p1 = (pixels >> 6) & 0x03;
+			p2 = (pixels >> 4) & 0x03;
+			p3 = (pixels >> 2) & 0x03;
+			p4 = (pixels >> 0) & 0x03;
+			pixels = (p1 << 0) | (p2 << 2) | (p3 << 4) | (p4 << 6);
+			*(*pp)++ = pixels;
+		} else {
+			*(*pp)++ = fixed_value;
+		}
+	}
+}
+
+/* pixels on display are numbered from 1 so odd is actually bits 0,2,4,... */
+static void repaper_odd_pixels(struct repaper_epd *epd, u8 **pp,
+			       const u8 *data, u8 fixed_value, const u8 *mask,
+			       enum repaper_stage stage)
+{
+	unsigned int b;
+
+	for (b = epd->width / 8; b > 0; b--) {
+		if (data) {
+			u8 pixels = data[b - 1] & 0x55;
+			u8 pixel_mask = 0xff;
+
+			if (mask) {
+				pixel_mask = (mask[b - 1] ^ pixels) & 0x55;
+				pixel_mask |= pixel_mask << 1;
+			}
+
+			switch (stage) {
+			case REPAPER_COMPENSATE: /* B -> W, W -> B (Current) */
+				pixels = 0xaa | (pixels ^ 0x55);
+				break;
+			case REPAPER_WHITE:      /* B -> N, W -> W (Current) */
+				pixels = 0x55 + (pixels ^ 0x55);
+				break;
+			case REPAPER_INVERSE:    /* B -> N, W -> B (New) */
+				pixels = 0x55 | ((pixels ^ 0x55) << 1);
+				break;
+			case REPAPER_NORMAL:     /* B -> B, W -> W (New) */
+				pixels = 0xaa | pixels;
+				break;
+			}
+
+			pixels = (pixels & pixel_mask) | (~pixel_mask & 0x55);
+			*(*pp)++ = pixels;
+		} else {
+			*(*pp)++ = fixed_value;
+		}
+	}
+}
+
+/* interleave bits: (byte)76543210 -> (16 bit).7.6.5.4.3.2.1 */
+static inline u16 repaper_interleave_bits(u16 value)
+{
+	value = (value | (value << 4)) & 0x0f0f;
+	value = (value | (value << 2)) & 0x3333;
+	value = (value | (value << 1)) & 0x5555;
+
+	return value;
+}
+
+/* pixels on display are numbered from 1 */
+static void repaper_all_pixels(struct repaper_epd *epd, u8 **pp,
+			       const u8 *data, u8 fixed_value, const u8 *mask,
+			       enum repaper_stage stage)
+{
+	unsigned int b;
+
+	for (b = epd->width / 8; b > 0; b--) {
+		if (data) {
+			u16 pixels = repaper_interleave_bits(data[b - 1]);
+			u16 pixel_mask = 0xffff;
+
+			if (mask) {
+				pixel_mask = repaper_interleave_bits(mask[b - 1]);
+
+				pixel_mask = (pixel_mask ^ pixels) & 0x5555;
+				pixel_mask |= pixel_mask << 1;
+			}
+
+			switch (stage) {
+			case REPAPER_COMPENSATE: /* B -> W, W -> B (Current) */
+				pixels = 0xaaaa | (pixels ^ 0x5555);
+				break;
+			case REPAPER_WHITE:      /* B -> N, W -> W (Current) */
+				pixels = 0x5555 + (pixels ^ 0x5555);
+				break;
+			case REPAPER_INVERSE:    /* B -> N, W -> B (New) */
+				pixels = 0x5555 | ((pixels ^ 0x5555) << 1);
+				break;
+			case REPAPER_NORMAL:     /* B -> B, W -> W (New) */
+				pixels = 0xaaaa | pixels;
+				break;
+			}
+
+			pixels = (pixels & pixel_mask) | (~pixel_mask & 0x5555);
+			*(*pp)++ = pixels >> 8;
+			*(*pp)++ = pixels;
+		} else {
+			*(*pp)++ = fixed_value;
+			*(*pp)++ = fixed_value;
+		}
+	}
+}
+
+/* output one line of scan and data bytes to the display */
+static void repaper_one_line(struct repaper_epd *epd, unsigned int line,
+			     const u8 *data, u8 fixed_value, const u8 *mask,
+			     enum repaper_stage stage)
+{
+	u8 *p = epd->line_buffer;
+	unsigned int b;
+
+	repaper_spi_mosi_low(epd->spi);
+
+	if (epd->pre_border_byte)
+		*p++ = 0x00;
+
+	if (epd->middle_scan) {
+		/* data bytes */
+		repaper_odd_pixels(epd, &p, data, fixed_value, mask, stage);
+
+		/* scan line */
+		for (b = epd->bytes_per_scan; b > 0; b--) {
+			if (line / 4 == b - 1)
+				*p++ = 0x03 << (2 * (line & 0x03));
+			else
+				*p++ = 0x00;
+		}
+
+		/* data bytes */
+		repaper_even_pixels(epd, &p, data, fixed_value, mask, stage);
+	} else {
+		/*
+		 * even scan line, but as lines on display are numbered from 1,
+		 * line: 1,3,5,...
+		 */
+		for (b = 0; b < epd->bytes_per_scan; b++) {
+			if (0 != (line & 0x01) && line / 8 == b)
+				*p++ = 0xc0 >> (line & 0x06);
+			else
+				*p++ = 0x00;
+		}
+
+		/* data bytes */
+		repaper_all_pixels(epd, &p, data, fixed_value, mask, stage);
+
+		/*
+		 * odd scan line, but as lines on display are numbered from 1,
+		 * line: 0,2,4,6,...
+		 */
+		for (b = epd->bytes_per_scan; b > 0; b--) {
+			if (0 == (line & 0x01) && line / 8 == b - 1)
+				*p++ = 0x03 << (line & 0x06);
+			else
+				*p++ = 0x00;
+		}
+	}
+
+	switch (epd->border_byte) {
+	case REPAPER_BORDER_BYTE_NONE:
+		break;
+
+	case REPAPER_BORDER_BYTE_ZERO:
+		*p++ = 0x00;
+		break;
+
+	case REPAPER_BORDER_BYTE_SET:
+		switch (stage) {
+		case REPAPER_COMPENSATE:
+		case REPAPER_WHITE:
+		case REPAPER_INVERSE:
+			*p++ = 0x00;
+			break;
+		case REPAPER_NORMAL:
+			*p++ = 0xaa;
+			break;
+		}
+		break;
+	}
+
+	repaper_write_buf(epd->spi, 0x0a, epd->line_buffer,
+			  p - epd->line_buffer);
+
+	/* Output data to panel */
+	repaper_write_val(epd->spi, 0x02, 0x07);
+
+	repaper_spi_mosi_low(epd->spi);
+}
+
+static void repaper_frame_fixed(struct repaper_epd *epd, u8 fixed_value,
+				enum repaper_stage stage)
+{
+	unsigned int line;
+
+	for (line = 0; line < epd->height; line++)
+		repaper_one_line(epd, line, NULL, fixed_value, NULL, stage);
+}
+
+static void repaper_frame_data(struct repaper_epd *epd, const u8 *image,
+			       const u8 *mask, enum repaper_stage stage)
+{
+	unsigned int line;
+
+	if (!mask) {
+		for (line = 0; line < epd->height; line++) {
+			repaper_one_line(epd, line,
+					 &image[line * (epd->width / 8)],
+					 0, NULL, stage);
+		}
+	} else {
+		for (line = 0; line < epd->height; line++) {
+			size_t n = line * epd->width / 8;
+
+			repaper_one_line(epd, line, &image[n], 0, &mask[n],
+					 stage);
+		}
+	}
+}
+
+static void repaper_frame_fixed_repeat(struct repaper_epd *epd, u8 fixed_value,
+				       enum repaper_stage stage)
+{
+	u64 start = local_clock();
+	u64 end = start + (epd->factored_stage_time * 1000 * 1000);
+
+	do {
+		repaper_frame_fixed(epd, fixed_value, stage);
+	} while (local_clock() < end);
+}
+
+static void repaper_frame_data_repeat(struct repaper_epd *epd, const u8 *image,
+				      const u8 *mask, enum repaper_stage stage)
+{
+	u64 start = local_clock();
+	u64 end = start + (epd->factored_stage_time * 1000 * 1000);
+
+	do {
+		repaper_frame_data(epd, image, mask, stage);
+	} while (local_clock() < end);
+}
+
+static void repaper_get_temperature(struct repaper_epd *epd)
+{
+	int ret, temperature = 0;
+	unsigned int factor10x;
+
+	if (!epd->thermal)
+		return;
+
+	ret = thermal_zone_get_temp(epd->thermal, &temperature);
+	if (ret) {
+		DRM_DEV_ERROR(&epd->spi->dev, "Failed to get temperature (%d)\n", ret);
+		return;
+	}
+
+	temperature /= 1000;
+
+	if (temperature <= -10)
+		factor10x = 170;
+	else if (temperature <= -5)
+		factor10x = 120;
+	else if (temperature <= 5)
+		factor10x = 80;
+	else if (temperature <= 10)
+		factor10x = 40;
+	else if (temperature <= 15)
+		factor10x = 30;
+	else if (temperature <= 20)
+		factor10x = 20;
+	else if (temperature <= 40)
+		factor10x = 10;
+	else
+		factor10x = 7;
+
+	epd->factored_stage_time = epd->stage_time * factor10x / 10;
+}
+
+static void repaper_gray8_to_mono_reversed(u8 *buf, u32 width, u32 height)
+{
+	u8 *gray8 = buf, *mono = buf;
+	int y, xb, i;
+
+	for (y = 0; y < height; y++)
+		for (xb = 0; xb < width / 8; xb++) {
+			u8 byte = 0x00;
+
+			for (i = 0; i < 8; i++) {
+				int x = xb * 8 + i;
+
+				byte >>= 1;
+				if (gray8[y * width + x] >> 7)
+					byte |= BIT(7);
+			}
+			*mono++ = byte;
+		}
+}
+
+static int repaper_fb_dirty(struct drm_framebuffer *fb)
+{
+	struct drm_gem_cma_object *cma_obj = drm_fb_cma_get_gem_obj(fb, 0);
+	struct dma_buf_attachment *import_attach = cma_obj->base.import_attach;
+	struct repaper_epd *epd = drm_to_epd(fb->dev);
+	struct drm_rect clip;
+	int idx, ret = 0;
+	u8 *buf = NULL;
+
+	if (!epd->enabled)
+		return 0;
+
+	if (!drm_dev_enter(fb->dev, &idx))
+		return -ENODEV;
+
+	/* repaper can't do partial updates */
+	clip.x1 = 0;
+	clip.x2 = fb->width;
+	clip.y1 = 0;
+	clip.y2 = fb->height;
+
+	repaper_get_temperature(epd);
+
+	DRM_DEBUG("Flushing [FB:%d] st=%ums\n", fb->base.id,
+		  epd->factored_stage_time);
+
+	buf = kmalloc_array(fb->width, fb->height, GFP_KERNEL);
+	if (!buf) {
+		ret = -ENOMEM;
+		goto out_exit;
+	}
+
+	if (import_attach) {
+		ret = dma_buf_begin_cpu_access(import_attach->dmabuf,
+					       DMA_FROM_DEVICE);
+		if (ret)
+			goto out_free;
+	}
+
+	drm_fb_xrgb8888_to_gray8(buf, cma_obj->vaddr, fb, &clip);
+
+	if (import_attach) {
+		ret = dma_buf_end_cpu_access(import_attach->dmabuf,
+					     DMA_FROM_DEVICE);
+		if (ret)
+			goto out_free;
+	}
+
+	repaper_gray8_to_mono_reversed(buf, fb->width, fb->height);
+
+	if (epd->partial) {
+		repaper_frame_data_repeat(epd, buf, epd->current_frame,
+					  REPAPER_NORMAL);
+	} else if (epd->cleared) {
+		repaper_frame_data_repeat(epd, epd->current_frame, NULL,
+					  REPAPER_COMPENSATE);
+		repaper_frame_data_repeat(epd, epd->current_frame, NULL,
+					  REPAPER_WHITE);
+		repaper_frame_data_repeat(epd, buf, NULL, REPAPER_INVERSE);
+		repaper_frame_data_repeat(epd, buf, NULL, REPAPER_NORMAL);
+
+		epd->partial = true;
+	} else {
+		/* Clear display (anything -> white) */
+		repaper_frame_fixed_repeat(epd, 0xff, REPAPER_COMPENSATE);
+		repaper_frame_fixed_repeat(epd, 0xff, REPAPER_WHITE);
+		repaper_frame_fixed_repeat(epd, 0xaa, REPAPER_INVERSE);
+		repaper_frame_fixed_repeat(epd, 0xaa, REPAPER_NORMAL);
+
+		/* Assuming a clear (white) screen output an image */
+		repaper_frame_fixed_repeat(epd, 0xaa, REPAPER_COMPENSATE);
+		repaper_frame_fixed_repeat(epd, 0xaa, REPAPER_WHITE);
+		repaper_frame_data_repeat(epd, buf, NULL, REPAPER_INVERSE);
+		repaper_frame_data_repeat(epd, buf, NULL, REPAPER_NORMAL);
+
+		epd->cleared = true;
+		epd->partial = true;
+	}
+
+	memcpy(epd->current_frame, buf, fb->width * fb->height / 8);
+
+	/*
+	 * An extra frame write is needed if pixels are set in the bottom line,
+	 * or else grey lines rises up from the pixels
+	 */
+	if (epd->pre_border_byte) {
+		unsigned int x;
+
+		for (x = 0; x < (fb->width / 8); x++)
+			if (buf[x + (fb->width * (fb->height - 1) / 8)]) {
+				repaper_frame_data_repeat(epd, buf,
+							  epd->current_frame,
+							  REPAPER_NORMAL);
+				break;
+			}
+	}
+
+out_free:
+	kfree(buf);
+out_exit:
+	drm_dev_exit(idx);
+
+	return ret;
+}
+
+static void power_off(struct repaper_epd *epd)
+{
+	/* Turn off power and all signals */
+	gpiod_set_value_cansleep(epd->reset, 0);
+	gpiod_set_value_cansleep(epd->panel_on, 0);
+	if (epd->border)
+		gpiod_set_value_cansleep(epd->border, 0);
+
+	/* Ensure SPI MOSI and CLOCK are Low before CS Low */
+	repaper_spi_mosi_low(epd->spi);
+
+	/* Discharge pulse */
+	gpiod_set_value_cansleep(epd->discharge, 1);
+	msleep(150);
+	gpiod_set_value_cansleep(epd->discharge, 0);
+}
+
+static void repaper_pipe_enable(struct drm_simple_display_pipe *pipe,
+				struct drm_crtc_state *crtc_state,
+				struct drm_plane_state *plane_state)
+{
+	struct repaper_epd *epd = drm_to_epd(pipe->crtc.dev);
+	struct spi_device *spi = epd->spi;
+	struct device *dev = &spi->dev;
+	bool dc_ok = false;
+	int i, ret, idx;
+
+	if (!drm_dev_enter(pipe->crtc.dev, &idx))
+		return;
+
+	DRM_DEBUG_DRIVER("\n");
+
+	/* Power up sequence */
+	gpiod_set_value_cansleep(epd->reset, 0);
+	gpiod_set_value_cansleep(epd->panel_on, 0);
+	gpiod_set_value_cansleep(epd->discharge, 0);
+	if (epd->border)
+		gpiod_set_value_cansleep(epd->border, 0);
+	repaper_spi_mosi_low(spi);
+	usleep_range(5000, 10000);
+
+	gpiod_set_value_cansleep(epd->panel_on, 1);
+	/*
+	 * This delay comes from the repaper.org userspace driver, it's not
+	 * mentioned in the datasheet.
+	 */
+	usleep_range(10000, 15000);
+	gpiod_set_value_cansleep(epd->reset, 1);
+	if (epd->border)
+		gpiod_set_value_cansleep(epd->border, 1);
+	usleep_range(5000, 10000);
+	gpiod_set_value_cansleep(epd->reset, 0);
+	usleep_range(5000, 10000);
+	gpiod_set_value_cansleep(epd->reset, 1);
+	usleep_range(5000, 10000);
+
+	/* Wait for COG to become ready */
+	for (i = 100; i > 0; i--) {
+		if (!gpiod_get_value_cansleep(epd->busy))
+			break;
+
+		usleep_range(10, 100);
+	}
+
+	if (!i) {
+		DRM_DEV_ERROR(dev, "timeout waiting for panel to become ready.\n");
+		power_off(epd);
+		goto out_exit;
+	}
+
+	repaper_read_id(spi);
+	ret = repaper_read_id(spi);
+	if (ret != REPAPER_RID_G2_COG_ID) {
+		if (ret < 0)
+			dev_err(dev, "failed to read chip (%d)\n", ret);
+		else
+			dev_err(dev, "wrong COG ID 0x%02x\n", ret);
+		power_off(epd);
+		goto out_exit;
+	}
+
+	/* Disable OE */
+	repaper_write_val(spi, 0x02, 0x40);
+
+	ret = repaper_read_val(spi, 0x0f);
+	if (ret < 0 || !(ret & 0x80)) {
+		if (ret < 0)
+			DRM_DEV_ERROR(dev, "failed to read chip (%d)\n", ret);
+		else
+			DRM_DEV_ERROR(dev, "panel is reported broken\n");
+		power_off(epd);
+		goto out_exit;
+	}
+
+	/* Power saving mode */
+	repaper_write_val(spi, 0x0b, 0x02);
+	/* Channel select */
+	repaper_write_buf(spi, 0x01, epd->channel_select, 8);
+	/* High power mode osc */
+	repaper_write_val(spi, 0x07, 0xd1);
+	/* Power setting */
+	repaper_write_val(spi, 0x08, 0x02);
+	/* Vcom level */
+	repaper_write_val(spi, 0x09, 0xc2);
+	/* Power setting */
+	repaper_write_val(spi, 0x04, 0x03);
+	/* Driver latch on */
+	repaper_write_val(spi, 0x03, 0x01);
+	/* Driver latch off */
+	repaper_write_val(spi, 0x03, 0x00);
+	usleep_range(5000, 10000);
+
+	/* Start chargepump */
+	for (i = 0; i < 4; ++i) {
+		/* Charge pump positive voltage on - VGH/VDL on */
+		repaper_write_val(spi, 0x05, 0x01);
+		msleep(240);
+
+		/* Charge pump negative voltage on - VGL/VDL on */
+		repaper_write_val(spi, 0x05, 0x03);
+		msleep(40);
+
+		/* Charge pump Vcom on - Vcom driver on */
+		repaper_write_val(spi, 0x05, 0x0f);
+		msleep(40);
+
+		/* check DC/DC */
+		ret = repaper_read_val(spi, 0x0f);
+		if (ret < 0) {
+			DRM_DEV_ERROR(dev, "failed to read chip (%d)\n", ret);
+			power_off(epd);
+			goto out_exit;
+		}
+
+		if (ret & 0x40) {
+			dc_ok = true;
+			break;
+		}
+	}
+
+	if (!dc_ok) {
+		DRM_DEV_ERROR(dev, "dc/dc failed\n");
+		power_off(epd);
+		goto out_exit;
+	}
+
+	/*
+	 * Output enable to disable
+	 * The userspace driver sets this to 0x04, but the datasheet says 0x06
+	 */
+	repaper_write_val(spi, 0x02, 0x04);
+
+	epd->enabled = true;
+	epd->partial = false;
+out_exit:
+	drm_dev_exit(idx);
+}
+
+static void repaper_pipe_disable(struct drm_simple_display_pipe *pipe)
+{
+	struct repaper_epd *epd = drm_to_epd(pipe->crtc.dev);
+	struct spi_device *spi = epd->spi;
+	unsigned int line;
+
+	/*
+	 * This callback is not protected by drm_dev_enter/exit since we want to
+	 * turn off the display on regular driver unload. It's highly unlikely
+	 * that the underlying SPI controller is gone should this be called after
+	 * unplug.
+	 */
+
+	if (!epd->enabled)
+		return;
+
+	DRM_DEBUG_DRIVER("\n");
+
+	epd->enabled = false;
+
+	/* Nothing frame */
+	for (line = 0; line < epd->height; line++)
+		repaper_one_line(epd, 0x7fffu, NULL, 0x00, NULL,
+				 REPAPER_COMPENSATE);
+
+	/* 2.7" */
+	if (epd->border) {
+		/* Dummy line */
+		repaper_one_line(epd, 0x7fffu, NULL, 0x00, NULL,
+				 REPAPER_COMPENSATE);
+		msleep(25);
+		gpiod_set_value_cansleep(epd->border, 0);
+		msleep(200);
+		gpiod_set_value_cansleep(epd->border, 1);
+	} else {
+		/* Border dummy line */
+		repaper_one_line(epd, 0x7fffu, NULL, 0x00, NULL,
+				 REPAPER_NORMAL);
+		msleep(200);
+	}
+
+	/* not described in datasheet */
+	repaper_write_val(spi, 0x0b, 0x00);
+	/* Latch reset turn on */
+	repaper_write_val(spi, 0x03, 0x01);
+	/* Power off charge pump Vcom */
+	repaper_write_val(spi, 0x05, 0x03);
+	/* Power off charge pump neg voltage */
+	repaper_write_val(spi, 0x05, 0x01);
+	msleep(120);
+	/* Discharge internal */
+	repaper_write_val(spi, 0x04, 0x80);
+	/* turn off all charge pumps */
+	repaper_write_val(spi, 0x05, 0x00);
+	/* Turn off osc */
+	repaper_write_val(spi, 0x07, 0x01);
+	msleep(50);
+
+	power_off(epd);
+}
+
+static void repaper_pipe_update(struct drm_simple_display_pipe *pipe,
+				struct drm_plane_state *old_state)
+{
+	struct drm_plane_state *state = pipe->plane.state;
+	struct drm_crtc *crtc = &pipe->crtc;
+	struct drm_rect rect;
+
+	if (drm_atomic_helper_damage_merged(old_state, state, &rect))
+		repaper_fb_dirty(state->fb);
+
+	if (crtc->state->event) {
+		spin_lock_irq(&crtc->dev->event_lock);
+		drm_crtc_send_vblank_event(crtc, crtc->state->event);
+		spin_unlock_irq(&crtc->dev->event_lock);
+		crtc->state->event = NULL;
+	}
+}
+
+static const struct drm_simple_display_pipe_funcs repaper_pipe_funcs = {
+	.enable = repaper_pipe_enable,
+	.disable = repaper_pipe_disable,
+	.update = repaper_pipe_update,
+	.prepare_fb = drm_gem_fb_simple_display_pipe_prepare_fb,
+};
+
+static int repaper_connector_get_modes(struct drm_connector *connector)
+{
+	struct repaper_epd *epd = drm_to_epd(connector->dev);
+	struct drm_display_mode *mode;
+
+	mode = drm_mode_duplicate(connector->dev, epd->mode);
+	if (!mode) {
+		DRM_ERROR("Failed to duplicate mode\n");
+		return 0;
+	}
+
+	drm_mode_set_name(mode);
+	mode->type |= DRM_MODE_TYPE_PREFERRED;
+	drm_mode_probed_add(connector, mode);
+
+	connector->display_info.width_mm = mode->width_mm;
+	connector->display_info.height_mm = mode->height_mm;
+
+	return 1;
+}
+
+static const struct drm_connector_helper_funcs repaper_connector_hfuncs = {
+	.get_modes = repaper_connector_get_modes,
+};
+
+static const struct drm_connector_funcs repaper_connector_funcs = {
+	.reset = drm_atomic_helper_connector_reset,
+	.fill_modes = drm_helper_probe_single_connector_modes,
+	.destroy = drm_connector_cleanup,
+	.atomic_duplicate_state = drm_atomic_helper_connector_duplicate_state,
+	.atomic_destroy_state = drm_atomic_helper_connector_destroy_state,
+};
+
+static const struct drm_mode_config_funcs repaper_mode_config_funcs = {
+	.fb_create = drm_gem_fb_create_with_dirty,
+	.atomic_check = drm_atomic_helper_check,
+	.atomic_commit = drm_atomic_helper_commit,
+};
+
+static void repaper_release(struct drm_device *drm)
+{
+	struct repaper_epd *epd = drm_to_epd(drm);
+
+	DRM_DEBUG_DRIVER("\n");
+
+	drm_mode_config_cleanup(drm);
+	drm_dev_fini(drm);
+	kfree(epd);
+}
+
+static const uint32_t repaper_formats[] = {
+	DRM_FORMAT_XRGB8888,
+};
+
+static const struct drm_display_mode repaper_e1144cs021_mode = {
+	DRM_SIMPLE_MODE(128, 96, 29, 22),
+};
+
+static const u8 repaper_e1144cs021_cs[] = { 0x00, 0x00, 0x00, 0x00,
+					    0x00, 0x0f, 0xff, 0x00 };
+
+static const struct drm_display_mode repaper_e1190cs021_mode = {
+	DRM_SIMPLE_MODE(144, 128, 36, 32),
+};
+
+static const u8 repaper_e1190cs021_cs[] = { 0x00, 0x00, 0x00, 0x03,
+					    0xfc, 0x00, 0x00, 0xff };
+
+static const struct drm_display_mode repaper_e2200cs021_mode = {
+	DRM_SIMPLE_MODE(200, 96, 46, 22),
+};
+
+static const u8 repaper_e2200cs021_cs[] = { 0x00, 0x00, 0x00, 0x00,
+					    0x01, 0xff, 0xe0, 0x00 };
+
+static const struct drm_display_mode repaper_e2271cs021_mode = {
+	DRM_SIMPLE_MODE(264, 176, 57, 38),
+};
+
+static const u8 repaper_e2271cs021_cs[] = { 0x00, 0x00, 0x00, 0x7f,
+					    0xff, 0xfe, 0x00, 0x00 };
+
+DEFINE_DRM_GEM_CMA_FOPS(repaper_fops);
+
+static struct drm_driver repaper_driver = {
+	.driver_features	= DRIVER_GEM | DRIVER_MODESET | DRIVER_ATOMIC,
+	.fops			= &repaper_fops,
+	.release		= repaper_release,
+	DRM_GEM_CMA_VMAP_DRIVER_OPS,
+	.name			= "repaper",
+	.desc			= "Pervasive Displays RePaper e-ink panels",
+	.date			= "20170405",
+	.major			= 1,
+	.minor			= 0,
+};
+
+static const struct of_device_id repaper_of_match[] = {
+	{ .compatible = "pervasive,e1144cs021", .data = (void *)E1144CS021 },
+	{ .compatible = "pervasive,e1190cs021", .data = (void *)E1190CS021 },
+	{ .compatible = "pervasive,e2200cs021", .data = (void *)E2200CS021 },
+	{ .compatible = "pervasive,e2271cs021", .data = (void *)E2271CS021 },
+	{},
+};
+MODULE_DEVICE_TABLE(of, repaper_of_match);
+
+static const struct spi_device_id repaper_id[] = {
+	{ "e1144cs021", E1144CS021 },
+	{ "e1190cs021", E1190CS021 },
+	{ "e2200cs021", E2200CS021 },
+	{ "e2271cs021", E2271CS021 },
+	{ },
+};
+MODULE_DEVICE_TABLE(spi, repaper_id);
+
+static int repaper_probe(struct spi_device *spi)
+{
+	const struct drm_display_mode *mode;
+	const struct spi_device_id *spi_id;
+	const struct of_device_id *match;
+	struct device *dev = &spi->dev;
+	enum repaper_model model;
+	const char *thermal_zone;
+	struct repaper_epd *epd;
+	size_t line_buffer_size;
+	struct drm_device *drm;
+	int ret;
+
+	match = of_match_device(repaper_of_match, dev);
+	if (match) {
+		model = (enum repaper_model)match->data;
+	} else {
+		spi_id = spi_get_device_id(spi);
+		model = spi_id->driver_data;
+	}
+
+	/* The SPI device is used to allocate dma memory */
+	if (!dev->coherent_dma_mask) {
+		ret = dma_coerce_mask_and_coherent(dev, DMA_BIT_MASK(32));
+		if (ret) {
+			dev_warn(dev, "Failed to set dma mask %d\n", ret);
+			return ret;
+		}
+	}
+
+	epd = kzalloc(sizeof(*epd), GFP_KERNEL);
+	if (!epd)
+		return -ENOMEM;
+
+	drm = &epd->drm;
+
+	ret = devm_drm_dev_init(dev, drm, &repaper_driver);
+	if (ret) {
+		kfree(epd);
+		return ret;
+	}
+
+	drm_mode_config_init(drm);
+	drm->mode_config.funcs = &repaper_mode_config_funcs;
+
+	epd->spi = spi;
+
+	epd->panel_on = devm_gpiod_get(dev, "panel-on", GPIOD_OUT_LOW);
+	if (IS_ERR(epd->panel_on)) {
+		ret = PTR_ERR(epd->panel_on);
+		if (ret != -EPROBE_DEFER)
+			DRM_DEV_ERROR(dev, "Failed to get gpio 'panel-on'\n");
+		return ret;
+	}
+
+	epd->discharge = devm_gpiod_get(dev, "discharge", GPIOD_OUT_LOW);
+	if (IS_ERR(epd->discharge)) {
+		ret = PTR_ERR(epd->discharge);
+		if (ret != -EPROBE_DEFER)
+			DRM_DEV_ERROR(dev, "Failed to get gpio 'discharge'\n");
+		return ret;
+	}
+
+	epd->reset = devm_gpiod_get(dev, "reset", GPIOD_OUT_LOW);
+	if (IS_ERR(epd->reset)) {
+		ret = PTR_ERR(epd->reset);
+		if (ret != -EPROBE_DEFER)
+			DRM_DEV_ERROR(dev, "Failed to get gpio 'reset'\n");
+		return ret;
+	}
+
+	epd->busy = devm_gpiod_get(dev, "busy", GPIOD_IN);
+	if (IS_ERR(epd->busy)) {
+		ret = PTR_ERR(epd->busy);
+		if (ret != -EPROBE_DEFER)
+			DRM_DEV_ERROR(dev, "Failed to get gpio 'busy'\n");
+		return ret;
+	}
+
+	if (!device_property_read_string(dev, "pervasive,thermal-zone",
+					 &thermal_zone)) {
+		epd->thermal = thermal_zone_get_zone_by_name(thermal_zone);
+		if (IS_ERR(epd->thermal)) {
+			DRM_DEV_ERROR(dev, "Failed to get thermal zone: %s\n", thermal_zone);
+			return PTR_ERR(epd->thermal);
+		}
+	}
+
+	switch (model) {
+	case E1144CS021:
+		mode = &repaper_e1144cs021_mode;
+		epd->channel_select = repaper_e1144cs021_cs;
+		epd->stage_time = 480;
+		epd->bytes_per_scan = 96 / 4;
+		epd->middle_scan = true; /* data-scan-data */
+		epd->pre_border_byte = false;
+		epd->border_byte = REPAPER_BORDER_BYTE_ZERO;
+		break;
+
+	case E1190CS021:
+		mode = &repaper_e1190cs021_mode;
+		epd->channel_select = repaper_e1190cs021_cs;
+		epd->stage_time = 480;
+		epd->bytes_per_scan = 128 / 4 / 2;
+		epd->middle_scan = false; /* scan-data-scan */
+		epd->pre_border_byte = false;
+		epd->border_byte = REPAPER_BORDER_BYTE_SET;
+		break;
+
+	case E2200CS021:
+		mode = &repaper_e2200cs021_mode;
+		epd->channel_select = repaper_e2200cs021_cs;
+		epd->stage_time = 480;
+		epd->bytes_per_scan = 96 / 4;
+		epd->middle_scan = true; /* data-scan-data */
+		epd->pre_border_byte = true;
+		epd->border_byte = REPAPER_BORDER_BYTE_NONE;
+		break;
+
+	case E2271CS021:
+		epd->border = devm_gpiod_get(dev, "border", GPIOD_OUT_LOW);
+		if (IS_ERR(epd->border)) {
+			ret = PTR_ERR(epd->border);
+			if (ret != -EPROBE_DEFER)
+				DRM_DEV_ERROR(dev, "Failed to get gpio 'border'\n");
+			return ret;
+		}
+
+		mode = &repaper_e2271cs021_mode;
+		epd->channel_select = repaper_e2271cs021_cs;
+		epd->stage_time = 630;
+		epd->bytes_per_scan = 176 / 4;
+		epd->middle_scan = true; /* data-scan-data */
+		epd->pre_border_byte = true;
+		epd->border_byte = REPAPER_BORDER_BYTE_NONE;
+		break;
+
+	default:
+		return -ENODEV;
+	}
+
+	epd->mode = mode;
+	epd->width = mode->hdisplay;
+	epd->height = mode->vdisplay;
+	epd->factored_stage_time = epd->stage_time;
+
+	line_buffer_size = 2 * epd->width / 8 + epd->bytes_per_scan + 2;
+	epd->line_buffer = devm_kzalloc(dev, line_buffer_size, GFP_KERNEL);
+	if (!epd->line_buffer)
+		return -ENOMEM;
+
+	epd->current_frame = devm_kzalloc(dev, epd->width * epd->height / 8,
+					  GFP_KERNEL);
+	if (!epd->current_frame)
+		return -ENOMEM;
+
+	drm->mode_config.min_width = mode->hdisplay;
+	drm->mode_config.max_width = mode->hdisplay;
+	drm->mode_config.min_height = mode->vdisplay;
+	drm->mode_config.max_height = mode->vdisplay;
+
+	drm_connector_helper_add(&epd->connector, &repaper_connector_hfuncs);
+	ret = drm_connector_init(drm, &epd->connector, &repaper_connector_funcs,
+				 DRM_MODE_CONNECTOR_SPI);
+	if (ret)
+		return ret;
+
+	ret = drm_simple_display_pipe_init(drm, &epd->pipe, &repaper_pipe_funcs,
+					   repaper_formats, ARRAY_SIZE(repaper_formats),
+					   NULL, &epd->connector);
+	if (ret)
+		return ret;
+
+	drm_mode_config_reset(drm);
+
+	ret = drm_dev_register(drm, 0);
+	if (ret)
+		return ret;
+
+	spi_set_drvdata(spi, drm);
+
+	DRM_DEBUG_DRIVER("SPI speed: %uMHz\n", spi->max_speed_hz / 1000000);
+
+	drm_fbdev_generic_setup(drm, 0);
+
+	return 0;
+}
+
+static int repaper_remove(struct spi_device *spi)
+{
+	struct drm_device *drm = spi_get_drvdata(spi);
+
+	drm_dev_unplug(drm);
+	drm_atomic_helper_shutdown(drm);
+
+	return 0;
+}
+
+static void repaper_shutdown(struct spi_device *spi)
+{
+	drm_atomic_helper_shutdown(spi_get_drvdata(spi));
+}
+
+static struct spi_driver repaper_spi_driver = {
+	.driver = {
+		.name = "repaper",
+		.owner = THIS_MODULE,
+		.of_match_table = repaper_of_match,
+	},
+	.id_table = repaper_id,
+	.probe = repaper_probe,
+	.remove = repaper_remove,
+	.shutdown = repaper_shutdown,
+};
+module_spi_driver(repaper_spi_driver);
+
+MODULE_DESCRIPTION("Pervasive Displays RePaper DRM driver");
+MODULE_AUTHOR("Noralf Trønnes");
+MODULE_LICENSE("GPL");
diff --git a/drivers/gpu/drm/tiny/st7586.c b/drivers/gpu/drm/tiny/st7586.c
new file mode 100644
index 000000000000..3cc21a1b30c8
--- /dev/null
+++ b/drivers/gpu/drm/tiny/st7586.c
@@ -0,0 +1,424 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * DRM driver for Sitronix ST7586 panels
+ *
+ * Copyright 2017 David Lechner <david@lechnology.com>
+ */
+
+#include <linux/delay.h>
+#include <linux/dma-buf.h>
+#include <linux/gpio/consumer.h>
+#include <linux/module.h>
+#include <linux/property.h>
+#include <linux/spi/spi.h>
+#include <video/mipi_display.h>
+
+#include <drm/drm_atomic_helper.h>
+#include <drm/drm_damage_helper.h>
+#include <drm/drm_drv.h>
+#include <drm/drm_fb_cma_helper.h>
+#include <drm/drm_fb_helper.h>
+#include <drm/drm_format_helper.h>
+#include <drm/drm_gem_cma_helper.h>
+#include <drm/drm_gem_framebuffer_helper.h>
+#include <drm/drm_mipi_dbi.h>
+#include <drm/drm_rect.h>
+#include <drm/drm_vblank.h>
+
+/* controller-specific commands */
+#define ST7586_DISP_MODE_GRAY	0x38
+#define ST7586_DISP_MODE_MONO	0x39
+#define ST7586_ENABLE_DDRAM	0x3a
+#define ST7586_SET_DISP_DUTY	0xb0
+#define ST7586_SET_PART_DISP	0xb4
+#define ST7586_SET_NLINE_INV	0xb5
+#define ST7586_SET_VOP		0xc0
+#define ST7586_SET_BIAS_SYSTEM	0xc3
+#define ST7586_SET_BOOST_LEVEL	0xc4
+#define ST7586_SET_VOP_OFFSET	0xc7
+#define ST7586_ENABLE_ANALOG	0xd0
+#define ST7586_AUTO_READ_CTRL	0xd7
+#define ST7586_OTP_RW_CTRL	0xe0
+#define ST7586_OTP_CTRL_OUT	0xe1
+#define ST7586_OTP_READ		0xe3
+
+#define ST7586_DISP_CTRL_MX	BIT(6)
+#define ST7586_DISP_CTRL_MY	BIT(7)
+
+/*
+ * The ST7586 controller has an unusual pixel format where 2bpp grayscale is
+ * packed 3 pixels per byte with the first two pixels using 3 bits and the 3rd
+ * pixel using only 2 bits.
+ *
+ * |  D7  |  D6  |  D5  ||      |      || 2bpp |
+ * | (D4) | (D3) | (D2) ||  D1  |  D0  || GRAY |
+ * +------+------+------++------+------++------+
+ * |  1   |  1   |  1   ||  1   |  1   || 0  0 | black
+ * |  1   |  0   |  0   ||  1   |  0   || 0  1 | dark gray
+ * |  0   |  1   |  0   ||  0   |  1   || 1  0 | light gray
+ * |  0   |  0   |  0   ||  0   |  0   || 1  1 | white
+ */
+
+static const u8 st7586_lookup[] = { 0x7, 0x4, 0x2, 0x0 };
+
+static void st7586_xrgb8888_to_gray332(u8 *dst, void *vaddr,
+				       struct drm_framebuffer *fb,
+				       struct drm_rect *clip)
+{
+	size_t len = (clip->x2 - clip->x1) * (clip->y2 - clip->y1);
+	unsigned int x, y;
+	u8 *src, *buf, val;
+
+	buf = kmalloc(len, GFP_KERNEL);
+	if (!buf)
+		return;
+
+	drm_fb_xrgb8888_to_gray8(buf, vaddr, fb, clip);
+	src = buf;
+
+	for (y = clip->y1; y < clip->y2; y++) {
+		for (x = clip->x1; x < clip->x2; x += 3) {
+			val = st7586_lookup[*src++ >> 6] << 5;
+			val |= st7586_lookup[*src++ >> 6] << 2;
+			val |= st7586_lookup[*src++ >> 6] >> 1;
+			*dst++ = val;
+		}
+	}
+
+	kfree(buf);
+}
+
+static int st7586_buf_copy(void *dst, struct drm_framebuffer *fb,
+			   struct drm_rect *clip)
+{
+	struct drm_gem_cma_object *cma_obj = drm_fb_cma_get_gem_obj(fb, 0);
+	struct dma_buf_attachment *import_attach = cma_obj->base.import_attach;
+	void *src = cma_obj->vaddr;
+	int ret = 0;
+
+	if (import_attach) {
+		ret = dma_buf_begin_cpu_access(import_attach->dmabuf,
+					       DMA_FROM_DEVICE);
+		if (ret)
+			return ret;
+	}
+
+	st7586_xrgb8888_to_gray332(dst, src, fb, clip);
+
+	if (import_attach)
+		ret = dma_buf_end_cpu_access(import_attach->dmabuf,
+					     DMA_FROM_DEVICE);
+
+	return ret;
+}
+
+static void st7586_fb_dirty(struct drm_framebuffer *fb, struct drm_rect *rect)
+{
+	struct mipi_dbi_dev *dbidev = drm_to_mipi_dbi_dev(fb->dev);
+	struct mipi_dbi *dbi = &dbidev->dbi;
+	int start, end, idx, ret = 0;
+
+	if (!dbidev->enabled)
+		return;
+
+	if (!drm_dev_enter(fb->dev, &idx))
+		return;
+
+	/* 3 pixels per byte, so grow clip to nearest multiple of 3 */
+	rect->x1 = rounddown(rect->x1, 3);
+	rect->x2 = roundup(rect->x2, 3);
+
+	DRM_DEBUG_KMS("Flushing [FB:%d] " DRM_RECT_FMT "\n", fb->base.id, DRM_RECT_ARG(rect));
+
+	ret = st7586_buf_copy(dbidev->tx_buf, fb, rect);
+	if (ret)
+		goto err_msg;
+
+	/* Pixels are packed 3 per byte */
+	start = rect->x1 / 3;
+	end = rect->x2 / 3;
+
+	mipi_dbi_command(dbi, MIPI_DCS_SET_COLUMN_ADDRESS,
+			 (start >> 8) & 0xFF, start & 0xFF,
+			 (end >> 8) & 0xFF, (end - 1) & 0xFF);
+	mipi_dbi_command(dbi, MIPI_DCS_SET_PAGE_ADDRESS,
+			 (rect->y1 >> 8) & 0xFF, rect->y1 & 0xFF,
+			 (rect->y2 >> 8) & 0xFF, (rect->y2 - 1) & 0xFF);
+
+	ret = mipi_dbi_command_buf(dbi, MIPI_DCS_WRITE_MEMORY_START,
+				   (u8 *)dbidev->tx_buf,
+				   (end - start) * (rect->y2 - rect->y1));
+err_msg:
+	if (ret)
+		dev_err_once(fb->dev->dev, "Failed to update display %d\n", ret);
+
+	drm_dev_exit(idx);
+}
+
+static void st7586_pipe_update(struct drm_simple_display_pipe *pipe,
+			       struct drm_plane_state *old_state)
+{
+	struct drm_plane_state *state = pipe->plane.state;
+	struct drm_crtc *crtc = &pipe->crtc;
+	struct drm_rect rect;
+
+	if (drm_atomic_helper_damage_merged(old_state, state, &rect))
+		st7586_fb_dirty(state->fb, &rect);
+
+	if (crtc->state->event) {
+		spin_lock_irq(&crtc->dev->event_lock);
+		drm_crtc_send_vblank_event(crtc, crtc->state->event);
+		spin_unlock_irq(&crtc->dev->event_lock);
+		crtc->state->event = NULL;
+	}
+}
+
+static void st7586_pipe_enable(struct drm_simple_display_pipe *pipe,
+			       struct drm_crtc_state *crtc_state,
+			       struct drm_plane_state *plane_state)
+{
+	struct mipi_dbi_dev *dbidev = drm_to_mipi_dbi_dev(pipe->crtc.dev);
+	struct drm_framebuffer *fb = plane_state->fb;
+	struct mipi_dbi *dbi = &dbidev->dbi;
+	struct drm_rect rect = {
+		.x1 = 0,
+		.x2 = fb->width,
+		.y1 = 0,
+		.y2 = fb->height,
+	};
+	int idx, ret;
+	u8 addr_mode;
+
+	if (!drm_dev_enter(pipe->crtc.dev, &idx))
+		return;
+
+	DRM_DEBUG_KMS("\n");
+
+	ret = mipi_dbi_poweron_reset(dbidev);
+	if (ret)
+		goto out_exit;
+
+	mipi_dbi_command(dbi, ST7586_AUTO_READ_CTRL, 0x9f);
+	mipi_dbi_command(dbi, ST7586_OTP_RW_CTRL, 0x00);
+
+	msleep(10);
+
+	mipi_dbi_command(dbi, ST7586_OTP_READ);
+
+	msleep(20);
+
+	mipi_dbi_command(dbi, ST7586_OTP_CTRL_OUT);
+	mipi_dbi_command(dbi, MIPI_DCS_EXIT_SLEEP_MODE);
+	mipi_dbi_command(dbi, MIPI_DCS_SET_DISPLAY_OFF);
+
+	msleep(50);
+
+	mipi_dbi_command(dbi, ST7586_SET_VOP_OFFSET, 0x00);
+	mipi_dbi_command(dbi, ST7586_SET_VOP, 0xe3, 0x00);
+	mipi_dbi_command(dbi, ST7586_SET_BIAS_SYSTEM, 0x02);
+	mipi_dbi_command(dbi, ST7586_SET_BOOST_LEVEL, 0x04);
+	mipi_dbi_command(dbi, ST7586_ENABLE_ANALOG, 0x1d);
+	mipi_dbi_command(dbi, ST7586_SET_NLINE_INV, 0x00);
+	mipi_dbi_command(dbi, ST7586_DISP_MODE_GRAY);
+	mipi_dbi_command(dbi, ST7586_ENABLE_DDRAM, 0x02);
+
+	switch (dbidev->rotation) {
+	default:
+		addr_mode = 0x00;
+		break;
+	case 90:
+		addr_mode = ST7586_DISP_CTRL_MY;
+		break;
+	case 180:
+		addr_mode = ST7586_DISP_CTRL_MX | ST7586_DISP_CTRL_MY;
+		break;
+	case 270:
+		addr_mode = ST7586_DISP_CTRL_MX;
+		break;
+	}
+	mipi_dbi_command(dbi, MIPI_DCS_SET_ADDRESS_MODE, addr_mode);
+
+	mipi_dbi_command(dbi, ST7586_SET_DISP_DUTY, 0x7f);
+	mipi_dbi_command(dbi, ST7586_SET_PART_DISP, 0xa0);
+	mipi_dbi_command(dbi, MIPI_DCS_SET_PARTIAL_AREA, 0x00, 0x00, 0x00, 0x77);
+	mipi_dbi_command(dbi, MIPI_DCS_EXIT_INVERT_MODE);
+
+	msleep(100);
+
+	dbidev->enabled = true;
+	st7586_fb_dirty(fb, &rect);
+
+	mipi_dbi_command(dbi, MIPI_DCS_SET_DISPLAY_ON);
+out_exit:
+	drm_dev_exit(idx);
+}
+
+static void st7586_pipe_disable(struct drm_simple_display_pipe *pipe)
+{
+	struct mipi_dbi_dev *dbidev = drm_to_mipi_dbi_dev(pipe->crtc.dev);
+
+	/*
+	 * This callback is not protected by drm_dev_enter/exit since we want to
+	 * turn off the display on regular driver unload. It's highly unlikely
+	 * that the underlying SPI controller is gone should this be called after
+	 * unplug.
+	 */
+
+	DRM_DEBUG_KMS("\n");
+
+	if (!dbidev->enabled)
+		return;
+
+	mipi_dbi_command(&dbidev->dbi, MIPI_DCS_SET_DISPLAY_OFF);
+	dbidev->enabled = false;
+}
+
+static const u32 st7586_formats[] = {
+	DRM_FORMAT_XRGB8888,
+};
+
+static const struct drm_simple_display_pipe_funcs st7586_pipe_funcs = {
+	.enable		= st7586_pipe_enable,
+	.disable	= st7586_pipe_disable,
+	.update		= st7586_pipe_update,
+	.prepare_fb	= drm_gem_fb_simple_display_pipe_prepare_fb,
+};
+
+static const struct drm_display_mode st7586_mode = {
+	DRM_SIMPLE_MODE(178, 128, 37, 27),
+};
+
+DEFINE_DRM_GEM_CMA_FOPS(st7586_fops);
+
+static struct drm_driver st7586_driver = {
+	.driver_features	= DRIVER_GEM | DRIVER_MODESET | DRIVER_ATOMIC,
+	.fops			= &st7586_fops,
+	.release		= mipi_dbi_release,
+	DRM_GEM_CMA_VMAP_DRIVER_OPS,
+	.debugfs_init		= mipi_dbi_debugfs_init,
+	.name			= "st7586",
+	.desc			= "Sitronix ST7586",
+	.date			= "20170801",
+	.major			= 1,
+	.minor			= 0,
+};
+
+static const struct of_device_id st7586_of_match[] = {
+	{ .compatible = "lego,ev3-lcd" },
+	{},
+};
+MODULE_DEVICE_TABLE(of, st7586_of_match);
+
+static const struct spi_device_id st7586_id[] = {
+	{ "ev3-lcd", 0 },
+	{ },
+};
+MODULE_DEVICE_TABLE(spi, st7586_id);
+
+static int st7586_probe(struct spi_device *spi)
+{
+	struct device *dev = &spi->dev;
+	struct mipi_dbi_dev *dbidev;
+	struct drm_device *drm;
+	struct mipi_dbi *dbi;
+	struct gpio_desc *a0;
+	u32 rotation = 0;
+	size_t bufsize;
+	int ret;
+
+	dbidev = kzalloc(sizeof(*dbidev), GFP_KERNEL);
+	if (!dbidev)
+		return -ENOMEM;
+
+	dbi = &dbidev->dbi;
+	drm = &dbidev->drm;
+	ret = devm_drm_dev_init(dev, drm, &st7586_driver);
+	if (ret) {
+		kfree(dbidev);
+		return ret;
+	}
+
+	drm_mode_config_init(drm);
+
+	bufsize = (st7586_mode.vdisplay + 2) / 3 * st7586_mode.hdisplay;
+
+	dbi->reset = devm_gpiod_get(dev, "reset", GPIOD_OUT_HIGH);
+	if (IS_ERR(dbi->reset)) {
+		DRM_DEV_ERROR(dev, "Failed to get gpio 'reset'\n");
+		return PTR_ERR(dbi->reset);
+	}
+
+	a0 = devm_gpiod_get(dev, "a0", GPIOD_OUT_LOW);
+	if (IS_ERR(a0)) {
+		DRM_DEV_ERROR(dev, "Failed to get gpio 'a0'\n");
+		return PTR_ERR(a0);
+	}
+
+	device_property_read_u32(dev, "rotation", &rotation);
+
+	ret = mipi_dbi_spi_init(spi, dbi, a0);
+	if (ret)
+		return ret;
+
+	/* Cannot read from this controller via SPI */
+	dbi->read_commands = NULL;
+
+	ret = mipi_dbi_dev_init_with_formats(dbidev, &st7586_pipe_funcs,
+					     st7586_formats, ARRAY_SIZE(st7586_formats),
+					     &st7586_mode, rotation, bufsize);
+	if (ret)
+		return ret;
+
+	/*
+	 * we are using 8-bit data, so we are not actually swapping anything,
+	 * but setting mipi->swap_bytes makes mipi_dbi_typec3_command() do the
+	 * right thing and not use 16-bit transfers (which results in swapped
+	 * bytes on little-endian systems and causes out of order data to be
+	 * sent to the display).
+	 */
+	dbi->swap_bytes = true;
+
+	drm_mode_config_reset(drm);
+
+	ret = drm_dev_register(drm, 0);
+	if (ret)
+		return ret;
+
+	spi_set_drvdata(spi, drm);
+
+	drm_fbdev_generic_setup(drm, 0);
+
+	return 0;
+}
+
+static int st7586_remove(struct spi_device *spi)
+{
+	struct drm_device *drm = spi_get_drvdata(spi);
+
+	drm_dev_unplug(drm);
+	drm_atomic_helper_shutdown(drm);
+
+	return 0;
+}
+
+static void st7586_shutdown(struct spi_device *spi)
+{
+	drm_atomic_helper_shutdown(spi_get_drvdata(spi));
+}
+
+static struct spi_driver st7586_spi_driver = {
+	.driver = {
+		.name = "st7586",
+		.owner = THIS_MODULE,
+		.of_match_table = st7586_of_match,
+	},
+	.id_table = st7586_id,
+	.probe = st7586_probe,
+	.remove = st7586_remove,
+	.shutdown = st7586_shutdown,
+};
+module_spi_driver(st7586_spi_driver);
+
+MODULE_DESCRIPTION("Sitronix ST7586 DRM driver");
+MODULE_AUTHOR("David Lechner <david@lechnology.com>");
+MODULE_LICENSE("GPL");
diff --git a/drivers/gpu/drm/tiny/st7735r.c b/drivers/gpu/drm/tiny/st7735r.c
new file mode 100644
index 000000000000..3f4487c71684
--- /dev/null
+++ b/drivers/gpu/drm/tiny/st7735r.c
@@ -0,0 +1,246 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * DRM driver for Sitronix ST7735R panels
+ *
+ * Copyright 2017 David Lechner <david@lechnology.com>
+ */
+
+#include <linux/backlight.h>
+#include <linux/delay.h>
+#include <linux/dma-buf.h>
+#include <linux/gpio/consumer.h>
+#include <linux/module.h>
+#include <linux/property.h>
+#include <linux/spi/spi.h>
+#include <video/mipi_display.h>
+
+#include <drm/drm_atomic_helper.h>
+#include <drm/drm_drv.h>
+#include <drm/drm_fb_helper.h>
+#include <drm/drm_gem_cma_helper.h>
+#include <drm/drm_gem_framebuffer_helper.h>
+#include <drm/drm_mipi_dbi.h>
+
+#define ST7735R_FRMCTR1		0xb1
+#define ST7735R_FRMCTR2		0xb2
+#define ST7735R_FRMCTR3		0xb3
+#define ST7735R_INVCTR		0xb4
+#define ST7735R_PWCTR1		0xc0
+#define ST7735R_PWCTR2		0xc1
+#define ST7735R_PWCTR3		0xc2
+#define ST7735R_PWCTR4		0xc3
+#define ST7735R_PWCTR5		0xc4
+#define ST7735R_VMCTR1		0xc5
+#define ST7735R_GAMCTRP1	0xe0
+#define ST7735R_GAMCTRN1	0xe1
+
+#define ST7735R_MY	BIT(7)
+#define ST7735R_MX	BIT(6)
+#define ST7735R_MV	BIT(5)
+
+static void jd_t18003_t01_pipe_enable(struct drm_simple_display_pipe *pipe,
+				      struct drm_crtc_state *crtc_state,
+				      struct drm_plane_state *plane_state)
+{
+	struct mipi_dbi_dev *dbidev = drm_to_mipi_dbi_dev(pipe->crtc.dev);
+	struct mipi_dbi *dbi = &dbidev->dbi;
+	int ret, idx;
+	u8 addr_mode;
+
+	if (!drm_dev_enter(pipe->crtc.dev, &idx))
+		return;
+
+	DRM_DEBUG_KMS("\n");
+
+	ret = mipi_dbi_poweron_reset(dbidev);
+	if (ret)
+		goto out_exit;
+
+	msleep(150);
+
+	mipi_dbi_command(dbi, MIPI_DCS_EXIT_SLEEP_MODE);
+	msleep(500);
+
+	mipi_dbi_command(dbi, ST7735R_FRMCTR1, 0x01, 0x2c, 0x2d);
+	mipi_dbi_command(dbi, ST7735R_FRMCTR2, 0x01, 0x2c, 0x2d);
+	mipi_dbi_command(dbi, ST7735R_FRMCTR3, 0x01, 0x2c, 0x2d, 0x01, 0x2c,
+			 0x2d);
+	mipi_dbi_command(dbi, ST7735R_INVCTR, 0x07);
+	mipi_dbi_command(dbi, ST7735R_PWCTR1, 0xa2, 0x02, 0x84);
+	mipi_dbi_command(dbi, ST7735R_PWCTR2, 0xc5);
+	mipi_dbi_command(dbi, ST7735R_PWCTR3, 0x0a, 0x00);
+	mipi_dbi_command(dbi, ST7735R_PWCTR4, 0x8a, 0x2a);
+	mipi_dbi_command(dbi, ST7735R_PWCTR5, 0x8a, 0xee);
+	mipi_dbi_command(dbi, ST7735R_VMCTR1, 0x0e);
+	mipi_dbi_command(dbi, MIPI_DCS_EXIT_INVERT_MODE);
+	switch (dbidev->rotation) {
+	default:
+		addr_mode = ST7735R_MX | ST7735R_MY;
+		break;
+	case 90:
+		addr_mode = ST7735R_MX | ST7735R_MV;
+		break;
+	case 180:
+		addr_mode = 0;
+		break;
+	case 270:
+		addr_mode = ST7735R_MY | ST7735R_MV;
+		break;
+	}
+	mipi_dbi_command(dbi, MIPI_DCS_SET_ADDRESS_MODE, addr_mode);
+	mipi_dbi_command(dbi, MIPI_DCS_SET_PIXEL_FORMAT,
+			 MIPI_DCS_PIXEL_FMT_16BIT);
+	mipi_dbi_command(dbi, ST7735R_GAMCTRP1, 0x02, 0x1c, 0x07, 0x12, 0x37,
+			 0x32, 0x29, 0x2d, 0x29, 0x25, 0x2b, 0x39, 0x00, 0x01,
+			 0x03, 0x10);
+	mipi_dbi_command(dbi, ST7735R_GAMCTRN1, 0x03, 0x1d, 0x07, 0x06, 0x2e,
+			 0x2c, 0x29, 0x2d, 0x2e, 0x2e, 0x37, 0x3f, 0x00, 0x00,
+			 0x02, 0x10);
+	mipi_dbi_command(dbi, MIPI_DCS_SET_DISPLAY_ON);
+
+	msleep(100);
+
+	mipi_dbi_command(dbi, MIPI_DCS_ENTER_NORMAL_MODE);
+
+	msleep(20);
+
+	mipi_dbi_enable_flush(dbidev, crtc_state, plane_state);
+out_exit:
+	drm_dev_exit(idx);
+}
+
+static const struct drm_simple_display_pipe_funcs jd_t18003_t01_pipe_funcs = {
+	.enable		= jd_t18003_t01_pipe_enable,
+	.disable	= mipi_dbi_pipe_disable,
+	.update		= mipi_dbi_pipe_update,
+	.prepare_fb	= drm_gem_fb_simple_display_pipe_prepare_fb,
+};
+
+static const struct drm_display_mode jd_t18003_t01_mode = {
+	DRM_SIMPLE_MODE(128, 160, 28, 35),
+};
+
+DEFINE_DRM_GEM_CMA_FOPS(st7735r_fops);
+
+static struct drm_driver st7735r_driver = {
+	.driver_features	= DRIVER_GEM | DRIVER_MODESET | DRIVER_ATOMIC,
+	.fops			= &st7735r_fops,
+	.release		= mipi_dbi_release,
+	DRM_GEM_CMA_VMAP_DRIVER_OPS,
+	.debugfs_init		= mipi_dbi_debugfs_init,
+	.name			= "st7735r",
+	.desc			= "Sitronix ST7735R",
+	.date			= "20171128",
+	.major			= 1,
+	.minor			= 0,
+};
+
+static const struct of_device_id st7735r_of_match[] = {
+	{ .compatible = "jianda,jd-t18003-t01" },
+	{ },
+};
+MODULE_DEVICE_TABLE(of, st7735r_of_match);
+
+static const struct spi_device_id st7735r_id[] = {
+	{ "jd-t18003-t01", 0 },
+	{ },
+};
+MODULE_DEVICE_TABLE(spi, st7735r_id);
+
+static int st7735r_probe(struct spi_device *spi)
+{
+	struct device *dev = &spi->dev;
+	struct mipi_dbi_dev *dbidev;
+	struct drm_device *drm;
+	struct mipi_dbi *dbi;
+	struct gpio_desc *dc;
+	u32 rotation = 0;
+	int ret;
+
+	dbidev = kzalloc(sizeof(*dbidev), GFP_KERNEL);
+	if (!dbidev)
+		return -ENOMEM;
+
+	dbi = &dbidev->dbi;
+	drm = &dbidev->drm;
+	ret = devm_drm_dev_init(dev, drm, &st7735r_driver);
+	if (ret) {
+		kfree(dbidev);
+		return ret;
+	}
+
+	drm_mode_config_init(drm);
+
+	dbi->reset = devm_gpiod_get(dev, "reset", GPIOD_OUT_HIGH);
+	if (IS_ERR(dbi->reset)) {
+		DRM_DEV_ERROR(dev, "Failed to get gpio 'reset'\n");
+		return PTR_ERR(dbi->reset);
+	}
+
+	dc = devm_gpiod_get(dev, "dc", GPIOD_OUT_LOW);
+	if (IS_ERR(dc)) {
+		DRM_DEV_ERROR(dev, "Failed to get gpio 'dc'\n");
+		return PTR_ERR(dc);
+	}
+
+	dbidev->backlight = devm_of_find_backlight(dev);
+	if (IS_ERR(dbidev->backlight))
+		return PTR_ERR(dbidev->backlight);
+
+	device_property_read_u32(dev, "rotation", &rotation);
+
+	ret = mipi_dbi_spi_init(spi, dbi, dc);
+	if (ret)
+		return ret;
+
+	/* Cannot read from Adafruit 1.8" display via SPI */
+	dbi->read_commands = NULL;
+
+	ret = mipi_dbi_dev_init(dbidev, &jd_t18003_t01_pipe_funcs, &jd_t18003_t01_mode, rotation);
+	if (ret)
+		return ret;
+
+	drm_mode_config_reset(drm);
+
+	ret = drm_dev_register(drm, 0);
+	if (ret)
+		return ret;
+
+	spi_set_drvdata(spi, drm);
+
+	drm_fbdev_generic_setup(drm, 0);
+
+	return 0;
+}
+
+static int st7735r_remove(struct spi_device *spi)
+{
+	struct drm_device *drm = spi_get_drvdata(spi);
+
+	drm_dev_unplug(drm);
+	drm_atomic_helper_shutdown(drm);
+
+	return 0;
+}
+
+static void st7735r_shutdown(struct spi_device *spi)
+{
+	drm_atomic_helper_shutdown(spi_get_drvdata(spi));
+}
+
+static struct spi_driver st7735r_spi_driver = {
+	.driver = {
+		.name = "st7735r",
+		.owner = THIS_MODULE,
+		.of_match_table = st7735r_of_match,
+	},
+	.id_table = st7735r_id,
+	.probe = st7735r_probe,
+	.remove = st7735r_remove,
+	.shutdown = st7735r_shutdown,
+};
+module_spi_driver(st7735r_spi_driver);
+
+MODULE_DESCRIPTION("Sitronix ST7735R DRM driver");
+MODULE_AUTHOR("David Lechner <david@lechnology.com>");
+MODULE_LICENSE("GPL");
diff --git a/drivers/gpu/drm/tinydrm/Kconfig b/drivers/gpu/drm/tinydrm/Kconfig
deleted file mode 100644
index f8c9a0e71dde..000000000000
--- a/drivers/gpu/drm/tinydrm/Kconfig
+++ /dev/null
@@ -1,89 +0,0 @@
-# SPDX-License-Identifier: GPL-2.0-only
-config TINYDRM_HX8357D
-	tristate "DRM support for HX8357D display panels"
-	depends on DRM && SPI
-	select DRM_KMS_HELPER
-	select DRM_KMS_CMA_HELPER
-	select DRM_MIPI_DBI
-	select BACKLIGHT_CLASS_DEVICE
-	help
-	  DRM driver for the following HX8357D panels:
-	  * YX350HV15-T 3.5" 340x350 TFT (Adafruit 3.5")
-
-	  If M is selected the module will be called hx8357d.
-
-config TINYDRM_ILI9225
-	tristate "DRM support for ILI9225 display panels"
-	depends on DRM && SPI
-	select DRM_KMS_HELPER
-	select DRM_KMS_CMA_HELPER
-	select DRM_MIPI_DBI
-	help
-	  DRM driver for the following Ilitek ILI9225 panels:
-	  * No-name 2.2" color screen module
-
-	  If M is selected the module will be called ili9225.
-
-config TINYDRM_ILI9341
-	tristate "DRM support for ILI9341 display panels"
-	depends on DRM && SPI
-	select DRM_KMS_HELPER
-	select DRM_KMS_CMA_HELPER
-	select DRM_MIPI_DBI
-	select BACKLIGHT_CLASS_DEVICE
-	help
-	  DRM driver for the following Ilitek ILI9341 panels:
-	  * YX240QV29-T 2.4" 240x320 TFT (Adafruit 2.4")
-
-	  If M is selected the module will be called ili9341.
-
-config TINYDRM_MI0283QT
-	tristate "DRM support for MI0283QT"
-	depends on DRM && SPI
-	select DRM_KMS_HELPER
-	select DRM_KMS_CMA_HELPER
-	select DRM_MIPI_DBI
-	select BACKLIGHT_CLASS_DEVICE
-	help
-	  DRM driver for the Multi-Inno MI0283QT display panel
-	  If M is selected the module will be called mi0283qt.
-
-config TINYDRM_REPAPER
-	tristate "DRM support for Pervasive Displays RePaper panels (V231)"
-	depends on DRM && SPI
-	select DRM_KMS_HELPER
-	select DRM_KMS_CMA_HELPER
-	depends on THERMAL || !THERMAL
-	help
-	  DRM driver for the following Pervasive Displays panels:
-	  1.44" TFT EPD Panel (E1144CS021)
-	  1.90" TFT EPD Panel (E1190CS021)
-	  2.00" TFT EPD Panel (E2200CS021)
-	  2.71" TFT EPD Panel (E2271CS021)
-
-	  If M is selected the module will be called repaper.
-
-config TINYDRM_ST7586
-	tristate "DRM support for Sitronix ST7586 display panels"
-	depends on DRM && SPI
-	select DRM_KMS_HELPER
-	select DRM_KMS_CMA_HELPER
-	select DRM_MIPI_DBI
-	help
-	  DRM driver for the following Sitronix ST7586 panels:
-	  * LEGO MINDSTORMS EV3
-
-	  If M is selected the module will be called st7586.
-
-config TINYDRM_ST7735R
-	tristate "DRM support for Sitronix ST7735R display panels"
-	depends on DRM && SPI
-	select DRM_KMS_HELPER
-	select DRM_KMS_CMA_HELPER
-	select DRM_MIPI_DBI
-	select BACKLIGHT_CLASS_DEVICE
-	help
-	  DRM driver Sitronix ST7735R with one of the following LCDs:
-	  * JD-T18003-T01 1.8" 128x160 TFT
-
-	  If M is selected the module will be called st7735r.
diff --git a/drivers/gpu/drm/tinydrm/Makefile b/drivers/gpu/drm/tinydrm/Makefile
deleted file mode 100644
index 6490167a9ad1..000000000000
--- a/drivers/gpu/drm/tinydrm/Makefile
+++ /dev/null
@@ -1,9 +0,0 @@
-# SPDX-License-Identifier: GPL-2.0-only
-
-obj-$(CONFIG_TINYDRM_HX8357D)		+= hx8357d.o
-obj-$(CONFIG_TINYDRM_ILI9225)		+= ili9225.o
-obj-$(CONFIG_TINYDRM_ILI9341)		+= ili9341.o
-obj-$(CONFIG_TINYDRM_MI0283QT)		+= mi0283qt.o
-obj-$(CONFIG_TINYDRM_REPAPER)		+= repaper.o
-obj-$(CONFIG_TINYDRM_ST7586)		+= st7586.o
-obj-$(CONFIG_TINYDRM_ST7735R)		+= st7735r.o
diff --git a/drivers/gpu/drm/tinydrm/hx8357d.c b/drivers/gpu/drm/tinydrm/hx8357d.c
deleted file mode 100644
index 9af8ff84974f..000000000000
--- a/drivers/gpu/drm/tinydrm/hx8357d.c
+++ /dev/null
@@ -1,304 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0+
-/*
- * DRM driver for the HX8357D LCD controller
- *
- * Copyright 2018 Broadcom
- * Copyright 2018 David Lechner <david@lechnology.com>
- * Copyright 2016 Noralf Trønnes
- * Copyright (C) 2015 Adafruit Industries
- * Copyright (C) 2013 Christian Vogelgsang
- */
-
-#include <linux/backlight.h>
-#include <linux/delay.h>
-#include <linux/gpio/consumer.h>
-#include <linux/module.h>
-#include <linux/property.h>
-#include <linux/spi/spi.h>
-
-#include <drm/drm_atomic_helper.h>
-#include <drm/drm_drv.h>
-#include <drm/drm_fb_helper.h>
-#include <drm/drm_gem_cma_helper.h>
-#include <drm/drm_gem_framebuffer_helper.h>
-#include <drm/drm_mipi_dbi.h>
-#include <drm/drm_modeset_helper.h>
-#include <video/mipi_display.h>
-
-#define HX8357D_SETOSC 0xb0
-#define HX8357D_SETPOWER 0xb1
-#define HX8357D_SETRGB 0xb3
-#define HX8357D_SETCYC 0xb3
-#define HX8357D_SETCOM 0xb6
-#define HX8357D_SETEXTC 0xb9
-#define HX8357D_SETSTBA 0xc0
-#define HX8357D_SETPANEL 0xcc
-#define HX8357D_SETGAMMA 0xe0
-
-#define HX8357D_MADCTL_MY  0x80
-#define HX8357D_MADCTL_MX  0x40
-#define HX8357D_MADCTL_MV  0x20
-#define HX8357D_MADCTL_ML  0x10
-#define HX8357D_MADCTL_RGB 0x00
-#define HX8357D_MADCTL_BGR 0x08
-#define HX8357D_MADCTL_MH  0x04
-
-static void yx240qv29_enable(struct drm_simple_display_pipe *pipe,
-			     struct drm_crtc_state *crtc_state,
-			     struct drm_plane_state *plane_state)
-{
-	struct mipi_dbi_dev *dbidev = drm_to_mipi_dbi_dev(pipe->crtc.dev);
-	struct mipi_dbi *dbi = &dbidev->dbi;
-	u8 addr_mode;
-	int ret, idx;
-
-	if (!drm_dev_enter(pipe->crtc.dev, &idx))
-		return;
-
-	DRM_DEBUG_KMS("\n");
-
-	ret = mipi_dbi_poweron_conditional_reset(dbidev);
-	if (ret < 0)
-		goto out_exit;
-	if (ret == 1)
-		goto out_enable;
-
-	/* setextc */
-	mipi_dbi_command(dbi, HX8357D_SETEXTC, 0xFF, 0x83, 0x57);
-	msleep(150);
-
-	/* setRGB which also enables SDO */
-	mipi_dbi_command(dbi, HX8357D_SETRGB, 0x00, 0x00, 0x06, 0x06);
-
-	/* -1.52V */
-	mipi_dbi_command(dbi, HX8357D_SETCOM, 0x25);
-
-	/* Normal mode 70Hz, Idle mode 55 Hz */
-	mipi_dbi_command(dbi, HX8357D_SETOSC, 0x68);
-
-	/* Set Panel - BGR, Gate direction swapped */
-	mipi_dbi_command(dbi, HX8357D_SETPANEL, 0x05);
-
-	mipi_dbi_command(dbi, HX8357D_SETPOWER,
-			 0x00,  /* Not deep standby */
-			 0x15,  /* BT */
-			 0x1C,  /* VSPR */
-			 0x1C,  /* VSNR */
-			 0x83,  /* AP */
-			 0xAA);  /* FS */
-
-	mipi_dbi_command(dbi, HX8357D_SETSTBA,
-			 0x50,  /* OPON normal */
-			 0x50,  /* OPON idle */
-			 0x01,  /* STBA */
-			 0x3C,  /* STBA */
-			 0x1E,  /* STBA */
-			 0x08);  /* GEN */
-
-	mipi_dbi_command(dbi, HX8357D_SETCYC,
-			 0x02,  /* NW 0x02 */
-			 0x40,  /* RTN */
-			 0x00,  /* DIV */
-			 0x2A,  /* DUM */
-			 0x2A,  /* DUM */
-			 0x0D,  /* GDON */
-			 0x78);  /* GDOFF */
-
-	mipi_dbi_command(dbi, HX8357D_SETGAMMA,
-			 0x02,
-			 0x0A,
-			 0x11,
-			 0x1d,
-			 0x23,
-			 0x35,
-			 0x41,
-			 0x4b,
-			 0x4b,
-			 0x42,
-			 0x3A,
-			 0x27,
-			 0x1B,
-			 0x08,
-			 0x09,
-			 0x03,
-			 0x02,
-			 0x0A,
-			 0x11,
-			 0x1d,
-			 0x23,
-			 0x35,
-			 0x41,
-			 0x4b,
-			 0x4b,
-			 0x42,
-			 0x3A,
-			 0x27,
-			 0x1B,
-			 0x08,
-			 0x09,
-			 0x03,
-			 0x00,
-			 0x01);
-
-	/* 16 bit */
-	mipi_dbi_command(dbi, MIPI_DCS_SET_PIXEL_FORMAT,
-			 MIPI_DCS_PIXEL_FMT_16BIT);
-
-	/* TE off */
-	mipi_dbi_command(dbi, MIPI_DCS_SET_TEAR_ON, 0x00);
-
-	/* tear line */
-	mipi_dbi_command(dbi, MIPI_DCS_SET_TEAR_SCANLINE, 0x00, 0x02);
-
-	/* Exit Sleep */
-	mipi_dbi_command(dbi, MIPI_DCS_EXIT_SLEEP_MODE);
-	msleep(150);
-
-	/* display on */
-	mipi_dbi_command(dbi, MIPI_DCS_SET_DISPLAY_ON);
-	usleep_range(5000, 7000);
-
-out_enable:
-	switch (dbidev->rotation) {
-	default:
-		addr_mode = HX8357D_MADCTL_MX | HX8357D_MADCTL_MY;
-		break;
-	case 90:
-		addr_mode = HX8357D_MADCTL_MV | HX8357D_MADCTL_MY;
-		break;
-	case 180:
-		addr_mode = 0;
-		break;
-	case 270:
-		addr_mode = HX8357D_MADCTL_MV | HX8357D_MADCTL_MX;
-		break;
-	}
-	mipi_dbi_command(dbi, MIPI_DCS_SET_ADDRESS_MODE, addr_mode);
-	mipi_dbi_enable_flush(dbidev, crtc_state, plane_state);
-out_exit:
-	drm_dev_exit(idx);
-}
-
-static const struct drm_simple_display_pipe_funcs hx8357d_pipe_funcs = {
-	.enable = yx240qv29_enable,
-	.disable = mipi_dbi_pipe_disable,
-	.update = mipi_dbi_pipe_update,
-	.prepare_fb = drm_gem_fb_simple_display_pipe_prepare_fb,
-};
-
-static const struct drm_display_mode yx350hv15_mode = {
-	DRM_SIMPLE_MODE(320, 480, 60, 75),
-};
-
-DEFINE_DRM_GEM_CMA_FOPS(hx8357d_fops);
-
-static struct drm_driver hx8357d_driver = {
-	.driver_features	= DRIVER_GEM | DRIVER_MODESET | DRIVER_ATOMIC,
-	.fops			= &hx8357d_fops,
-	.release		= mipi_dbi_release,
-	DRM_GEM_CMA_VMAP_DRIVER_OPS,
-	.debugfs_init		= mipi_dbi_debugfs_init,
-	.name			= "hx8357d",
-	.desc			= "HX8357D",
-	.date			= "20181023",
-	.major			= 1,
-	.minor			= 0,
-};
-
-static const struct of_device_id hx8357d_of_match[] = {
-	{ .compatible = "adafruit,yx350hv15" },
-	{ }
-};
-MODULE_DEVICE_TABLE(of, hx8357d_of_match);
-
-static const struct spi_device_id hx8357d_id[] = {
-	{ "yx350hv15", 0 },
-	{ }
-};
-MODULE_DEVICE_TABLE(spi, hx8357d_id);
-
-static int hx8357d_probe(struct spi_device *spi)
-{
-	struct device *dev = &spi->dev;
-	struct mipi_dbi_dev *dbidev;
-	struct drm_device *drm;
-	struct gpio_desc *dc;
-	u32 rotation = 0;
-	int ret;
-
-	dbidev = kzalloc(sizeof(*dbidev), GFP_KERNEL);
-	if (!dbidev)
-		return -ENOMEM;
-
-	drm = &dbidev->drm;
-	ret = devm_drm_dev_init(dev, drm, &hx8357d_driver);
-	if (ret) {
-		kfree(dbidev);
-		return ret;
-	}
-
-	drm_mode_config_init(drm);
-
-	dc = devm_gpiod_get(dev, "dc", GPIOD_OUT_LOW);
-	if (IS_ERR(dc)) {
-		DRM_DEV_ERROR(dev, "Failed to get gpio 'dc'\n");
-		return PTR_ERR(dc);
-	}
-
-	dbidev->backlight = devm_of_find_backlight(dev);
-	if (IS_ERR(dbidev->backlight))
-		return PTR_ERR(dbidev->backlight);
-
-	device_property_read_u32(dev, "rotation", &rotation);
-
-	ret = mipi_dbi_spi_init(spi, &dbidev->dbi, dc);
-	if (ret)
-		return ret;
-
-	ret = mipi_dbi_dev_init(dbidev, &hx8357d_pipe_funcs, &yx350hv15_mode, rotation);
-	if (ret)
-		return ret;
-
-	drm_mode_config_reset(drm);
-
-	ret = drm_dev_register(drm, 0);
-	if (ret)
-		return ret;
-
-	spi_set_drvdata(spi, drm);
-
-	drm_fbdev_generic_setup(drm, 0);
-
-	return 0;
-}
-
-static int hx8357d_remove(struct spi_device *spi)
-{
-	struct drm_device *drm = spi_get_drvdata(spi);
-
-	drm_dev_unplug(drm);
-	drm_atomic_helper_shutdown(drm);
-
-	return 0;
-}
-
-static void hx8357d_shutdown(struct spi_device *spi)
-{
-	drm_atomic_helper_shutdown(spi_get_drvdata(spi));
-}
-
-static struct spi_driver hx8357d_spi_driver = {
-	.driver = {
-		.name = "hx8357d",
-		.of_match_table = hx8357d_of_match,
-	},
-	.id_table = hx8357d_id,
-	.probe = hx8357d_probe,
-	.remove = hx8357d_remove,
-	.shutdown = hx8357d_shutdown,
-};
-module_spi_driver(hx8357d_spi_driver);
-
-MODULE_DESCRIPTION("HX8357D DRM driver");
-MODULE_AUTHOR("Eric Anholt <eric@anholt.net>");
-MODULE_LICENSE("GPL");
diff --git a/drivers/gpu/drm/tinydrm/ili9225.c b/drivers/gpu/drm/tinydrm/ili9225.c
deleted file mode 100644
index c66acc566c2b..000000000000
--- a/drivers/gpu/drm/tinydrm/ili9225.c
+++ /dev/null
@@ -1,470 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0-or-later
-/*
- * DRM driver for Ilitek ILI9225 panels
- *
- * Copyright 2017 David Lechner <david@lechnology.com>
- *
- * Some code copied from mipi-dbi.c
- * Copyright 2016 Noralf Trønnes
- */
-
-#include <linux/delay.h>
-#include <linux/dma-buf.h>
-#include <linux/gpio/consumer.h>
-#include <linux/module.h>
-#include <linux/property.h>
-#include <linux/spi/spi.h>
-#include <video/mipi_display.h>
-
-#include <drm/drm_atomic_helper.h>
-#include <drm/drm_damage_helper.h>
-#include <drm/drm_drv.h>
-#include <drm/drm_fb_cma_helper.h>
-#include <drm/drm_fb_helper.h>
-#include <drm/drm_fourcc.h>
-#include <drm/drm_gem_cma_helper.h>
-#include <drm/drm_gem_framebuffer_helper.h>
-#include <drm/drm_mipi_dbi.h>
-#include <drm/drm_rect.h>
-#include <drm/drm_vblank.h>
-
-#define ILI9225_DRIVER_READ_CODE	0x00
-#define ILI9225_DRIVER_OUTPUT_CONTROL	0x01
-#define ILI9225_LCD_AC_DRIVING_CONTROL	0x02
-#define ILI9225_ENTRY_MODE		0x03
-#define ILI9225_DISPLAY_CONTROL_1	0x07
-#define ILI9225_BLANK_PERIOD_CONTROL_1	0x08
-#define ILI9225_FRAME_CYCLE_CONTROL	0x0b
-#define ILI9225_INTERFACE_CONTROL	0x0c
-#define ILI9225_OSCILLATION_CONTROL	0x0f
-#define ILI9225_POWER_CONTROL_1		0x10
-#define ILI9225_POWER_CONTROL_2		0x11
-#define ILI9225_POWER_CONTROL_3		0x12
-#define ILI9225_POWER_CONTROL_4		0x13
-#define ILI9225_POWER_CONTROL_5		0x14
-#define ILI9225_VCI_RECYCLING		0x15
-#define ILI9225_RAM_ADDRESS_SET_1	0x20
-#define ILI9225_RAM_ADDRESS_SET_2	0x21
-#define ILI9225_WRITE_DATA_TO_GRAM	0x22
-#define ILI9225_SOFTWARE_RESET		0x28
-#define ILI9225_GATE_SCAN_CONTROL	0x30
-#define ILI9225_VERTICAL_SCROLL_1	0x31
-#define ILI9225_VERTICAL_SCROLL_2	0x32
-#define ILI9225_VERTICAL_SCROLL_3	0x33
-#define ILI9225_PARTIAL_DRIVING_POS_1	0x34
-#define ILI9225_PARTIAL_DRIVING_POS_2	0x35
-#define ILI9225_HORIZ_WINDOW_ADDR_1	0x36
-#define ILI9225_HORIZ_WINDOW_ADDR_2	0x37
-#define ILI9225_VERT_WINDOW_ADDR_1	0x38
-#define ILI9225_VERT_WINDOW_ADDR_2	0x39
-#define ILI9225_GAMMA_CONTROL_1		0x50
-#define ILI9225_GAMMA_CONTROL_2		0x51
-#define ILI9225_GAMMA_CONTROL_3		0x52
-#define ILI9225_GAMMA_CONTROL_4		0x53
-#define ILI9225_GAMMA_CONTROL_5		0x54
-#define ILI9225_GAMMA_CONTROL_6		0x55
-#define ILI9225_GAMMA_CONTROL_7		0x56
-#define ILI9225_GAMMA_CONTROL_8		0x57
-#define ILI9225_GAMMA_CONTROL_9		0x58
-#define ILI9225_GAMMA_CONTROL_10	0x59
-
-static inline int ili9225_command(struct mipi_dbi *dbi, u8 cmd, u16 data)
-{
-	u8 par[2] = { data >> 8, data & 0xff };
-
-	return mipi_dbi_command_buf(dbi, cmd, par, 2);
-}
-
-static void ili9225_fb_dirty(struct drm_framebuffer *fb, struct drm_rect *rect)
-{
-	struct drm_gem_cma_object *cma_obj = drm_fb_cma_get_gem_obj(fb, 0);
-	struct mipi_dbi_dev *dbidev = drm_to_mipi_dbi_dev(fb->dev);
-	unsigned int height = rect->y2 - rect->y1;
-	unsigned int width = rect->x2 - rect->x1;
-	struct mipi_dbi *dbi = &dbidev->dbi;
-	bool swap = dbi->swap_bytes;
-	u16 x_start, y_start;
-	u16 x1, x2, y1, y2;
-	int idx, ret = 0;
-	bool full;
-	void *tr;
-
-	if (!dbidev->enabled)
-		return;
-
-	if (!drm_dev_enter(fb->dev, &idx))
-		return;
-
-	full = width == fb->width && height == fb->height;
-
-	DRM_DEBUG_KMS("Flushing [FB:%d] " DRM_RECT_FMT "\n", fb->base.id, DRM_RECT_ARG(rect));
-
-	if (!dbi->dc || !full || swap ||
-	    fb->format->format == DRM_FORMAT_XRGB8888) {
-		tr = dbidev->tx_buf;
-		ret = mipi_dbi_buf_copy(dbidev->tx_buf, fb, rect, swap);
-		if (ret)
-			goto err_msg;
-	} else {
-		tr = cma_obj->vaddr;
-	}
-
-	switch (dbidev->rotation) {
-	default:
-		x1 = rect->x1;
-		x2 = rect->x2 - 1;
-		y1 = rect->y1;
-		y2 = rect->y2 - 1;
-		x_start = x1;
-		y_start = y1;
-		break;
-	case 90:
-		x1 = rect->y1;
-		x2 = rect->y2 - 1;
-		y1 = fb->width - rect->x2;
-		y2 = fb->width - rect->x1 - 1;
-		x_start = x1;
-		y_start = y2;
-		break;
-	case 180:
-		x1 = fb->width - rect->x2;
-		x2 = fb->width - rect->x1 - 1;
-		y1 = fb->height - rect->y2;
-		y2 = fb->height - rect->y1 - 1;
-		x_start = x2;
-		y_start = y2;
-		break;
-	case 270:
-		x1 = fb->height - rect->y2;
-		x2 = fb->height - rect->y1 - 1;
-		y1 = rect->x1;
-		y2 = rect->x2 - 1;
-		x_start = x2;
-		y_start = y1;
-		break;
-	}
-
-	ili9225_command(dbi, ILI9225_HORIZ_WINDOW_ADDR_1, x2);
-	ili9225_command(dbi, ILI9225_HORIZ_WINDOW_ADDR_2, x1);
-	ili9225_command(dbi, ILI9225_VERT_WINDOW_ADDR_1, y2);
-	ili9225_command(dbi, ILI9225_VERT_WINDOW_ADDR_2, y1);
-
-	ili9225_command(dbi, ILI9225_RAM_ADDRESS_SET_1, x_start);
-	ili9225_command(dbi, ILI9225_RAM_ADDRESS_SET_2, y_start);
-
-	ret = mipi_dbi_command_buf(dbi, ILI9225_WRITE_DATA_TO_GRAM, tr,
-				   width * height * 2);
-err_msg:
-	if (ret)
-		dev_err_once(fb->dev->dev, "Failed to update display %d\n", ret);
-
-	drm_dev_exit(idx);
-}
-
-static void ili9225_pipe_update(struct drm_simple_display_pipe *pipe,
-				struct drm_plane_state *old_state)
-{
-	struct drm_plane_state *state = pipe->plane.state;
-	struct drm_crtc *crtc = &pipe->crtc;
-	struct drm_rect rect;
-
-	if (drm_atomic_helper_damage_merged(old_state, state, &rect))
-		ili9225_fb_dirty(state->fb, &rect);
-
-	if (crtc->state->event) {
-		spin_lock_irq(&crtc->dev->event_lock);
-		drm_crtc_send_vblank_event(crtc, crtc->state->event);
-		spin_unlock_irq(&crtc->dev->event_lock);
-		crtc->state->event = NULL;
-	}
-}
-
-static void ili9225_pipe_enable(struct drm_simple_display_pipe *pipe,
-				struct drm_crtc_state *crtc_state,
-				struct drm_plane_state *plane_state)
-{
-	struct mipi_dbi_dev *dbidev = drm_to_mipi_dbi_dev(pipe->crtc.dev);
-	struct drm_framebuffer *fb = plane_state->fb;
-	struct device *dev = pipe->crtc.dev->dev;
-	struct mipi_dbi *dbi = &dbidev->dbi;
-	struct drm_rect rect = {
-		.x1 = 0,
-		.x2 = fb->width,
-		.y1 = 0,
-		.y2 = fb->height,
-	};
-	int ret, idx;
-	u8 am_id;
-
-	if (!drm_dev_enter(pipe->crtc.dev, &idx))
-		return;
-
-	DRM_DEBUG_KMS("\n");
-
-	mipi_dbi_hw_reset(dbi);
-
-	/*
-	 * There don't seem to be two example init sequences that match, so
-	 * using the one from the popular Arduino library for this display.
-	 * https://github.com/Nkawu/TFT_22_ILI9225/blob/master/src/TFT_22_ILI9225.cpp
-	 */
-
-	ret = ili9225_command(dbi, ILI9225_POWER_CONTROL_1, 0x0000);
-	if (ret) {
-		DRM_DEV_ERROR(dev, "Error sending command %d\n", ret);
-		goto out_exit;
-	}
-	ili9225_command(dbi, ILI9225_POWER_CONTROL_2, 0x0000);
-	ili9225_command(dbi, ILI9225_POWER_CONTROL_3, 0x0000);
-	ili9225_command(dbi, ILI9225_POWER_CONTROL_4, 0x0000);
-	ili9225_command(dbi, ILI9225_POWER_CONTROL_5, 0x0000);
-
-	msleep(40);
-
-	ili9225_command(dbi, ILI9225_POWER_CONTROL_2, 0x0018);
-	ili9225_command(dbi, ILI9225_POWER_CONTROL_3, 0x6121);
-	ili9225_command(dbi, ILI9225_POWER_CONTROL_4, 0x006f);
-	ili9225_command(dbi, ILI9225_POWER_CONTROL_5, 0x495f);
-	ili9225_command(dbi, ILI9225_POWER_CONTROL_1, 0x0800);
-
-	msleep(10);
-
-	ili9225_command(dbi, ILI9225_POWER_CONTROL_2, 0x103b);
-
-	msleep(50);
-
-	switch (dbidev->rotation) {
-	default:
-		am_id = 0x30;
-		break;
-	case 90:
-		am_id = 0x18;
-		break;
-	case 180:
-		am_id = 0x00;
-		break;
-	case 270:
-		am_id = 0x28;
-		break;
-	}
-	ili9225_command(dbi, ILI9225_DRIVER_OUTPUT_CONTROL, 0x011c);
-	ili9225_command(dbi, ILI9225_LCD_AC_DRIVING_CONTROL, 0x0100);
-	ili9225_command(dbi, ILI9225_ENTRY_MODE, 0x1000 | am_id);
-	ili9225_command(dbi, ILI9225_DISPLAY_CONTROL_1, 0x0000);
-	ili9225_command(dbi, ILI9225_BLANK_PERIOD_CONTROL_1, 0x0808);
-	ili9225_command(dbi, ILI9225_FRAME_CYCLE_CONTROL, 0x1100);
-	ili9225_command(dbi, ILI9225_INTERFACE_CONTROL, 0x0000);
-	ili9225_command(dbi, ILI9225_OSCILLATION_CONTROL, 0x0d01);
-	ili9225_command(dbi, ILI9225_VCI_RECYCLING, 0x0020);
-	ili9225_command(dbi, ILI9225_RAM_ADDRESS_SET_1, 0x0000);
-	ili9225_command(dbi, ILI9225_RAM_ADDRESS_SET_2, 0x0000);
-
-	ili9225_command(dbi, ILI9225_GATE_SCAN_CONTROL, 0x0000);
-	ili9225_command(dbi, ILI9225_VERTICAL_SCROLL_1, 0x00db);
-	ili9225_command(dbi, ILI9225_VERTICAL_SCROLL_2, 0x0000);
-	ili9225_command(dbi, ILI9225_VERTICAL_SCROLL_3, 0x0000);
-	ili9225_command(dbi, ILI9225_PARTIAL_DRIVING_POS_1, 0x00db);
-	ili9225_command(dbi, ILI9225_PARTIAL_DRIVING_POS_2, 0x0000);
-
-	ili9225_command(dbi, ILI9225_GAMMA_CONTROL_1, 0x0000);
-	ili9225_command(dbi, ILI9225_GAMMA_CONTROL_2, 0x0808);
-	ili9225_command(dbi, ILI9225_GAMMA_CONTROL_3, 0x080a);
-	ili9225_command(dbi, ILI9225_GAMMA_CONTROL_4, 0x000a);
-	ili9225_command(dbi, ILI9225_GAMMA_CONTROL_5, 0x0a08);
-	ili9225_command(dbi, ILI9225_GAMMA_CONTROL_6, 0x0808);
-	ili9225_command(dbi, ILI9225_GAMMA_CONTROL_7, 0x0000);
-	ili9225_command(dbi, ILI9225_GAMMA_CONTROL_8, 0x0a00);
-	ili9225_command(dbi, ILI9225_GAMMA_CONTROL_9, 0x0710);
-	ili9225_command(dbi, ILI9225_GAMMA_CONTROL_10, 0x0710);
-
-	ili9225_command(dbi, ILI9225_DISPLAY_CONTROL_1, 0x0012);
-
-	msleep(50);
-
-	ili9225_command(dbi, ILI9225_DISPLAY_CONTROL_1, 0x1017);
-
-	dbidev->enabled = true;
-	ili9225_fb_dirty(fb, &rect);
-out_exit:
-	drm_dev_exit(idx);
-}
-
-static void ili9225_pipe_disable(struct drm_simple_display_pipe *pipe)
-{
-	struct mipi_dbi_dev *dbidev = drm_to_mipi_dbi_dev(pipe->crtc.dev);
-	struct mipi_dbi *dbi = &dbidev->dbi;
-
-	DRM_DEBUG_KMS("\n");
-
-	/*
-	 * This callback is not protected by drm_dev_enter/exit since we want to
-	 * turn off the display on regular driver unload. It's highly unlikely
-	 * that the underlying SPI controller is gone should this be called after
-	 * unplug.
-	 */
-
-	if (!dbidev->enabled)
-		return;
-
-	ili9225_command(dbi, ILI9225_DISPLAY_CONTROL_1, 0x0000);
-	msleep(50);
-	ili9225_command(dbi, ILI9225_POWER_CONTROL_2, 0x0007);
-	msleep(50);
-	ili9225_command(dbi, ILI9225_POWER_CONTROL_1, 0x0a02);
-
-	dbidev->enabled = false;
-}
-
-static int ili9225_dbi_command(struct mipi_dbi *dbi, u8 *cmd, u8 *par,
-			       size_t num)
-{
-	struct spi_device *spi = dbi->spi;
-	unsigned int bpw = 8;
-	u32 speed_hz;
-	int ret;
-
-	gpiod_set_value_cansleep(dbi->dc, 0);
-	speed_hz = mipi_dbi_spi_cmd_max_speed(spi, 1);
-	ret = mipi_dbi_spi_transfer(spi, speed_hz, 8, cmd, 1);
-	if (ret || !num)
-		return ret;
-
-	if (*cmd == ILI9225_WRITE_DATA_TO_GRAM && !dbi->swap_bytes)
-		bpw = 16;
-
-	gpiod_set_value_cansleep(dbi->dc, 1);
-	speed_hz = mipi_dbi_spi_cmd_max_speed(spi, num);
-
-	return mipi_dbi_spi_transfer(spi, speed_hz, bpw, par, num);
-}
-
-static const struct drm_simple_display_pipe_funcs ili9225_pipe_funcs = {
-	.enable		= ili9225_pipe_enable,
-	.disable	= ili9225_pipe_disable,
-	.update		= ili9225_pipe_update,
-	.prepare_fb	= drm_gem_fb_simple_display_pipe_prepare_fb,
-};
-
-static const struct drm_display_mode ili9225_mode = {
-	DRM_SIMPLE_MODE(176, 220, 35, 44),
-};
-
-DEFINE_DRM_GEM_CMA_FOPS(ili9225_fops);
-
-static struct drm_driver ili9225_driver = {
-	.driver_features	= DRIVER_GEM | DRIVER_MODESET | DRIVER_ATOMIC,
-	.fops			= &ili9225_fops,
-	.release		= mipi_dbi_release,
-	DRM_GEM_CMA_VMAP_DRIVER_OPS,
-	.name			= "ili9225",
-	.desc			= "Ilitek ILI9225",
-	.date			= "20171106",
-	.major			= 1,
-	.minor			= 0,
-};
-
-static const struct of_device_id ili9225_of_match[] = {
-	{ .compatible = "vot,v220hf01a-t" },
-	{},
-};
-MODULE_DEVICE_TABLE(of, ili9225_of_match);
-
-static const struct spi_device_id ili9225_id[] = {
-	{ "v220hf01a-t", 0 },
-	{ },
-};
-MODULE_DEVICE_TABLE(spi, ili9225_id);
-
-static int ili9225_probe(struct spi_device *spi)
-{
-	struct device *dev = &spi->dev;
-	struct mipi_dbi_dev *dbidev;
-	struct drm_device *drm;
-	struct mipi_dbi *dbi;
-	struct gpio_desc *rs;
-	u32 rotation = 0;
-	int ret;
-
-	dbidev = kzalloc(sizeof(*dbidev), GFP_KERNEL);
-	if (!dbidev)
-		return -ENOMEM;
-
-	dbi = &dbidev->dbi;
-	drm = &dbidev->drm;
-	ret = devm_drm_dev_init(dev, drm, &ili9225_driver);
-	if (ret) {
-		kfree(dbidev);
-		return ret;
-	}
-
-	drm_mode_config_init(drm);
-
-	dbi->reset = devm_gpiod_get(dev, "reset", GPIOD_OUT_HIGH);
-	if (IS_ERR(dbi->reset)) {
-		DRM_DEV_ERROR(dev, "Failed to get gpio 'reset'\n");
-		return PTR_ERR(dbi->reset);
-	}
-
-	rs = devm_gpiod_get(dev, "rs", GPIOD_OUT_LOW);
-	if (IS_ERR(rs)) {
-		DRM_DEV_ERROR(dev, "Failed to get gpio 'rs'\n");
-		return PTR_ERR(rs);
-	}
-
-	device_property_read_u32(dev, "rotation", &rotation);
-
-	ret = mipi_dbi_spi_init(spi, dbi, rs);
-	if (ret)
-		return ret;
-
-	/* override the command function set in  mipi_dbi_spi_init() */
-	dbi->command = ili9225_dbi_command;
-
-	ret = mipi_dbi_dev_init(dbidev, &ili9225_pipe_funcs, &ili9225_mode, rotation);
-	if (ret)
-		return ret;
-
-	drm_mode_config_reset(drm);
-
-	ret = drm_dev_register(drm, 0);
-	if (ret)
-		return ret;
-
-	spi_set_drvdata(spi, drm);
-
-	drm_fbdev_generic_setup(drm, 0);
-
-	return 0;
-}
-
-static int ili9225_remove(struct spi_device *spi)
-{
-	struct drm_device *drm = spi_get_drvdata(spi);
-
-	drm_dev_unplug(drm);
-	drm_atomic_helper_shutdown(drm);
-
-	return 0;
-}
-
-static void ili9225_shutdown(struct spi_device *spi)
-{
-	drm_atomic_helper_shutdown(spi_get_drvdata(spi));
-}
-
-static struct spi_driver ili9225_spi_driver = {
-	.driver = {
-		.name = "ili9225",
-		.owner = THIS_MODULE,
-		.of_match_table = ili9225_of_match,
-	},
-	.id_table = ili9225_id,
-	.probe = ili9225_probe,
-	.remove = ili9225_remove,
-	.shutdown = ili9225_shutdown,
-};
-module_spi_driver(ili9225_spi_driver);
-
-MODULE_DESCRIPTION("Ilitek ILI9225 DRM driver");
-MODULE_AUTHOR("David Lechner <david@lechnology.com>");
-MODULE_LICENSE("GPL");
diff --git a/drivers/gpu/drm/tinydrm/ili9341.c b/drivers/gpu/drm/tinydrm/ili9341.c
deleted file mode 100644
index 33b51dc7faa8..000000000000
--- a/drivers/gpu/drm/tinydrm/ili9341.c
+++ /dev/null
@@ -1,268 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0+
-/*
- * DRM driver for Ilitek ILI9341 panels
- *
- * Copyright 2018 David Lechner <david@lechnology.com>
- *
- * Based on mi0283qt.c:
- * Copyright 2016 Noralf Trønnes
- */
-
-#include <linux/backlight.h>
-#include <linux/delay.h>
-#include <linux/gpio/consumer.h>
-#include <linux/module.h>
-#include <linux/property.h>
-#include <linux/spi/spi.h>
-
-#include <drm/drm_atomic_helper.h>
-#include <drm/drm_drv.h>
-#include <drm/drm_fb_helper.h>
-#include <drm/drm_gem_cma_helper.h>
-#include <drm/drm_gem_framebuffer_helper.h>
-#include <drm/drm_mipi_dbi.h>
-#include <drm/drm_modeset_helper.h>
-#include <video/mipi_display.h>
-
-#define ILI9341_FRMCTR1		0xb1
-#define ILI9341_DISCTRL		0xb6
-#define ILI9341_ETMOD		0xb7
-
-#define ILI9341_PWCTRL1		0xc0
-#define ILI9341_PWCTRL2		0xc1
-#define ILI9341_VMCTRL1		0xc5
-#define ILI9341_VMCTRL2		0xc7
-#define ILI9341_PWCTRLA		0xcb
-#define ILI9341_PWCTRLB		0xcf
-
-#define ILI9341_PGAMCTRL	0xe0
-#define ILI9341_NGAMCTRL	0xe1
-#define ILI9341_DTCTRLA		0xe8
-#define ILI9341_DTCTRLB		0xea
-#define ILI9341_PWRSEQ		0xed
-
-#define ILI9341_EN3GAM		0xf2
-#define ILI9341_PUMPCTRL	0xf7
-
-#define ILI9341_MADCTL_BGR	BIT(3)
-#define ILI9341_MADCTL_MV	BIT(5)
-#define ILI9341_MADCTL_MX	BIT(6)
-#define ILI9341_MADCTL_MY	BIT(7)
-
-static void yx240qv29_enable(struct drm_simple_display_pipe *pipe,
-			     struct drm_crtc_state *crtc_state,
-			     struct drm_plane_state *plane_state)
-{
-	struct mipi_dbi_dev *dbidev = drm_to_mipi_dbi_dev(pipe->crtc.dev);
-	struct mipi_dbi *dbi = &dbidev->dbi;
-	u8 addr_mode;
-	int ret, idx;
-
-	if (!drm_dev_enter(pipe->crtc.dev, &idx))
-		return;
-
-	DRM_DEBUG_KMS("\n");
-
-	ret = mipi_dbi_poweron_conditional_reset(dbidev);
-	if (ret < 0)
-		goto out_exit;
-	if (ret == 1)
-		goto out_enable;
-
-	mipi_dbi_command(dbi, MIPI_DCS_SET_DISPLAY_OFF);
-
-	mipi_dbi_command(dbi, ILI9341_PWCTRLB, 0x00, 0xc1, 0x30);
-	mipi_dbi_command(dbi, ILI9341_PWRSEQ, 0x64, 0x03, 0x12, 0x81);
-	mipi_dbi_command(dbi, ILI9341_DTCTRLA, 0x85, 0x00, 0x78);
-	mipi_dbi_command(dbi, ILI9341_PWCTRLA, 0x39, 0x2c, 0x00, 0x34, 0x02);
-	mipi_dbi_command(dbi, ILI9341_PUMPCTRL, 0x20);
-	mipi_dbi_command(dbi, ILI9341_DTCTRLB, 0x00, 0x00);
-
-	/* Power Control */
-	mipi_dbi_command(dbi, ILI9341_PWCTRL1, 0x23);
-	mipi_dbi_command(dbi, ILI9341_PWCTRL2, 0x10);
-	/* VCOM */
-	mipi_dbi_command(dbi, ILI9341_VMCTRL1, 0x3e, 0x28);
-	mipi_dbi_command(dbi, ILI9341_VMCTRL2, 0x86);
-
-	/* Memory Access Control */
-	mipi_dbi_command(dbi, MIPI_DCS_SET_PIXEL_FORMAT, MIPI_DCS_PIXEL_FMT_16BIT);
-
-	/* Frame Rate */
-	mipi_dbi_command(dbi, ILI9341_FRMCTR1, 0x00, 0x1b);
-
-	/* Gamma */
-	mipi_dbi_command(dbi, ILI9341_EN3GAM, 0x00);
-	mipi_dbi_command(dbi, MIPI_DCS_SET_GAMMA_CURVE, 0x01);
-	mipi_dbi_command(dbi, ILI9341_PGAMCTRL,
-			 0x0f, 0x31, 0x2b, 0x0c, 0x0e, 0x08, 0x4e, 0xf1,
-			 0x37, 0x07, 0x10, 0x03, 0x0e, 0x09, 0x00);
-	mipi_dbi_command(dbi, ILI9341_NGAMCTRL,
-			 0x00, 0x0e, 0x14, 0x03, 0x11, 0x07, 0x31, 0xc1,
-			 0x48, 0x08, 0x0f, 0x0c, 0x31, 0x36, 0x0f);
-
-	/* DDRAM */
-	mipi_dbi_command(dbi, ILI9341_ETMOD, 0x07);
-
-	/* Display */
-	mipi_dbi_command(dbi, ILI9341_DISCTRL, 0x08, 0x82, 0x27, 0x00);
-	mipi_dbi_command(dbi, MIPI_DCS_EXIT_SLEEP_MODE);
-	msleep(100);
-
-	mipi_dbi_command(dbi, MIPI_DCS_SET_DISPLAY_ON);
-	msleep(100);
-
-out_enable:
-	switch (dbidev->rotation) {
-	default:
-		addr_mode = ILI9341_MADCTL_MX;
-		break;
-	case 90:
-		addr_mode = ILI9341_MADCTL_MV;
-		break;
-	case 180:
-		addr_mode = ILI9341_MADCTL_MY;
-		break;
-	case 270:
-		addr_mode = ILI9341_MADCTL_MV | ILI9341_MADCTL_MY |
-			    ILI9341_MADCTL_MX;
-		break;
-	}
-	addr_mode |= ILI9341_MADCTL_BGR;
-	mipi_dbi_command(dbi, MIPI_DCS_SET_ADDRESS_MODE, addr_mode);
-	mipi_dbi_enable_flush(dbidev, crtc_state, plane_state);
-out_exit:
-	drm_dev_exit(idx);
-}
-
-static const struct drm_simple_display_pipe_funcs ili9341_pipe_funcs = {
-	.enable = yx240qv29_enable,
-	.disable = mipi_dbi_pipe_disable,
-	.update = mipi_dbi_pipe_update,
-	.prepare_fb = drm_gem_fb_simple_display_pipe_prepare_fb,
-};
-
-static const struct drm_display_mode yx240qv29_mode = {
-	DRM_SIMPLE_MODE(240, 320, 37, 49),
-};
-
-DEFINE_DRM_GEM_CMA_FOPS(ili9341_fops);
-
-static struct drm_driver ili9341_driver = {
-	.driver_features	= DRIVER_GEM | DRIVER_MODESET | DRIVER_ATOMIC,
-	.fops			= &ili9341_fops,
-	.release		= mipi_dbi_release,
-	DRM_GEM_CMA_VMAP_DRIVER_OPS,
-	.debugfs_init		= mipi_dbi_debugfs_init,
-	.name			= "ili9341",
-	.desc			= "Ilitek ILI9341",
-	.date			= "20180514",
-	.major			= 1,
-	.minor			= 0,
-};
-
-static const struct of_device_id ili9341_of_match[] = {
-	{ .compatible = "adafruit,yx240qv29" },
-	{ }
-};
-MODULE_DEVICE_TABLE(of, ili9341_of_match);
-
-static const struct spi_device_id ili9341_id[] = {
-	{ "yx240qv29", 0 },
-	{ }
-};
-MODULE_DEVICE_TABLE(spi, ili9341_id);
-
-static int ili9341_probe(struct spi_device *spi)
-{
-	struct device *dev = &spi->dev;
-	struct mipi_dbi_dev *dbidev;
-	struct drm_device *drm;
-	struct mipi_dbi *dbi;
-	struct gpio_desc *dc;
-	u32 rotation = 0;
-	int ret;
-
-	dbidev = kzalloc(sizeof(*dbidev), GFP_KERNEL);
-	if (!dbidev)
-		return -ENOMEM;
-
-	dbi = &dbidev->dbi;
-	drm = &dbidev->drm;
-	ret = devm_drm_dev_init(dev, drm, &ili9341_driver);
-	if (ret) {
-		kfree(dbidev);
-		return ret;
-	}
-
-	drm_mode_config_init(drm);
-
-	dbi->reset = devm_gpiod_get_optional(dev, "reset", GPIOD_OUT_HIGH);
-	if (IS_ERR(dbi->reset)) {
-		DRM_DEV_ERROR(dev, "Failed to get gpio 'reset'\n");
-		return PTR_ERR(dbi->reset);
-	}
-
-	dc = devm_gpiod_get_optional(dev, "dc", GPIOD_OUT_LOW);
-	if (IS_ERR(dc)) {
-		DRM_DEV_ERROR(dev, "Failed to get gpio 'dc'\n");
-		return PTR_ERR(dc);
-	}
-
-	dbidev->backlight = devm_of_find_backlight(dev);
-	if (IS_ERR(dbidev->backlight))
-		return PTR_ERR(dbidev->backlight);
-
-	device_property_read_u32(dev, "rotation", &rotation);
-
-	ret = mipi_dbi_spi_init(spi, dbi, dc);
-	if (ret)
-		return ret;
-
-	ret = mipi_dbi_dev_init(dbidev, &ili9341_pipe_funcs, &yx240qv29_mode, rotation);
-	if (ret)
-		return ret;
-
-	drm_mode_config_reset(drm);
-
-	ret = drm_dev_register(drm, 0);
-	if (ret)
-		return ret;
-
-	spi_set_drvdata(spi, drm);
-
-	drm_fbdev_generic_setup(drm, 0);
-
-	return 0;
-}
-
-static int ili9341_remove(struct spi_device *spi)
-{
-	struct drm_device *drm = spi_get_drvdata(spi);
-
-	drm_dev_unplug(drm);
-	drm_atomic_helper_shutdown(drm);
-
-	return 0;
-}
-
-static void ili9341_shutdown(struct spi_device *spi)
-{
-	drm_atomic_helper_shutdown(spi_get_drvdata(spi));
-}
-
-static struct spi_driver ili9341_spi_driver = {
-	.driver = {
-		.name = "ili9341",
-		.of_match_table = ili9341_of_match,
-	},
-	.id_table = ili9341_id,
-	.probe = ili9341_probe,
-	.remove = ili9341_remove,
-	.shutdown = ili9341_shutdown,
-};
-module_spi_driver(ili9341_spi_driver);
-
-MODULE_DESCRIPTION("Ilitek ILI9341 DRM driver");
-MODULE_AUTHOR("David Lechner <david@lechnology.com>");
-MODULE_LICENSE("GPL");
diff --git a/drivers/gpu/drm/tinydrm/mi0283qt.c b/drivers/gpu/drm/tinydrm/mi0283qt.c
deleted file mode 100644
index e2cfd9a17143..000000000000
--- a/drivers/gpu/drm/tinydrm/mi0283qt.c
+++ /dev/null
@@ -1,294 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0-or-later
-/*
- * DRM driver for Multi-Inno MI0283QT panels
- *
- * Copyright 2016 Noralf Trønnes
- */
-
-#include <linux/backlight.h>
-#include <linux/delay.h>
-#include <linux/gpio/consumer.h>
-#include <linux/module.h>
-#include <linux/property.h>
-#include <linux/regulator/consumer.h>
-#include <linux/spi/spi.h>
-
-#include <drm/drm_atomic_helper.h>
-#include <drm/drm_drv.h>
-#include <drm/drm_fb_helper.h>
-#include <drm/drm_gem_cma_helper.h>
-#include <drm/drm_gem_framebuffer_helper.h>
-#include <drm/drm_mipi_dbi.h>
-#include <drm/drm_modeset_helper.h>
-#include <video/mipi_display.h>
-
-#define ILI9341_FRMCTR1		0xb1
-#define ILI9341_DISCTRL		0xb6
-#define ILI9341_ETMOD		0xb7
-
-#define ILI9341_PWCTRL1		0xc0
-#define ILI9341_PWCTRL2		0xc1
-#define ILI9341_VMCTRL1		0xc5
-#define ILI9341_VMCTRL2		0xc7
-#define ILI9341_PWCTRLA		0xcb
-#define ILI9341_PWCTRLB		0xcf
-
-#define ILI9341_PGAMCTRL	0xe0
-#define ILI9341_NGAMCTRL	0xe1
-#define ILI9341_DTCTRLA		0xe8
-#define ILI9341_DTCTRLB		0xea
-#define ILI9341_PWRSEQ		0xed
-
-#define ILI9341_EN3GAM		0xf2
-#define ILI9341_PUMPCTRL	0xf7
-
-#define ILI9341_MADCTL_BGR	BIT(3)
-#define ILI9341_MADCTL_MV	BIT(5)
-#define ILI9341_MADCTL_MX	BIT(6)
-#define ILI9341_MADCTL_MY	BIT(7)
-
-static void mi0283qt_enable(struct drm_simple_display_pipe *pipe,
-			    struct drm_crtc_state *crtc_state,
-			    struct drm_plane_state *plane_state)
-{
-	struct mipi_dbi_dev *dbidev = drm_to_mipi_dbi_dev(pipe->crtc.dev);
-	struct mipi_dbi *dbi = &dbidev->dbi;
-	u8 addr_mode;
-	int ret, idx;
-
-	if (!drm_dev_enter(pipe->crtc.dev, &idx))
-		return;
-
-	DRM_DEBUG_KMS("\n");
-
-	ret = mipi_dbi_poweron_conditional_reset(dbidev);
-	if (ret < 0)
-		goto out_exit;
-	if (ret == 1)
-		goto out_enable;
-
-	mipi_dbi_command(dbi, MIPI_DCS_SET_DISPLAY_OFF);
-
-	mipi_dbi_command(dbi, ILI9341_PWCTRLB, 0x00, 0x83, 0x30);
-	mipi_dbi_command(dbi, ILI9341_PWRSEQ, 0x64, 0x03, 0x12, 0x81);
-	mipi_dbi_command(dbi, ILI9341_DTCTRLA, 0x85, 0x01, 0x79);
-	mipi_dbi_command(dbi, ILI9341_PWCTRLA, 0x39, 0x2c, 0x00, 0x34, 0x02);
-	mipi_dbi_command(dbi, ILI9341_PUMPCTRL, 0x20);
-	mipi_dbi_command(dbi, ILI9341_DTCTRLB, 0x00, 0x00);
-
-	/* Power Control */
-	mipi_dbi_command(dbi, ILI9341_PWCTRL1, 0x26);
-	mipi_dbi_command(dbi, ILI9341_PWCTRL2, 0x11);
-	/* VCOM */
-	mipi_dbi_command(dbi, ILI9341_VMCTRL1, 0x35, 0x3e);
-	mipi_dbi_command(dbi, ILI9341_VMCTRL2, 0xbe);
-
-	/* Memory Access Control */
-	mipi_dbi_command(dbi, MIPI_DCS_SET_PIXEL_FORMAT, MIPI_DCS_PIXEL_FMT_16BIT);
-
-	/* Frame Rate */
-	mipi_dbi_command(dbi, ILI9341_FRMCTR1, 0x00, 0x1b);
-
-	/* Gamma */
-	mipi_dbi_command(dbi, ILI9341_EN3GAM, 0x08);
-	mipi_dbi_command(dbi, MIPI_DCS_SET_GAMMA_CURVE, 0x01);
-	mipi_dbi_command(dbi, ILI9341_PGAMCTRL,
-		       0x1f, 0x1a, 0x18, 0x0a, 0x0f, 0x06, 0x45, 0x87,
-		       0x32, 0x0a, 0x07, 0x02, 0x07, 0x05, 0x00);
-	mipi_dbi_command(dbi, ILI9341_NGAMCTRL,
-		       0x00, 0x25, 0x27, 0x05, 0x10, 0x09, 0x3a, 0x78,
-		       0x4d, 0x05, 0x18, 0x0d, 0x38, 0x3a, 0x1f);
-
-	/* DDRAM */
-	mipi_dbi_command(dbi, ILI9341_ETMOD, 0x07);
-
-	/* Display */
-	mipi_dbi_command(dbi, ILI9341_DISCTRL, 0x0a, 0x82, 0x27, 0x00);
-	mipi_dbi_command(dbi, MIPI_DCS_EXIT_SLEEP_MODE);
-	msleep(100);
-
-	mipi_dbi_command(dbi, MIPI_DCS_SET_DISPLAY_ON);
-	msleep(100);
-
-out_enable:
-	/* The PiTFT (ili9340) has a hardware reset circuit that
-	 * resets only on power-on and not on each reboot through
-	 * a gpio like the rpi-display does.
-	 * As a result, we need to always apply the rotation value
-	 * regardless of the display "on/off" state.
-	 */
-	switch (dbidev->rotation) {
-	default:
-		addr_mode = ILI9341_MADCTL_MV | ILI9341_MADCTL_MY |
-			    ILI9341_MADCTL_MX;
-		break;
-	case 90:
-		addr_mode = ILI9341_MADCTL_MY;
-		break;
-	case 180:
-		addr_mode = ILI9341_MADCTL_MV;
-		break;
-	case 270:
-		addr_mode = ILI9341_MADCTL_MX;
-		break;
-	}
-	addr_mode |= ILI9341_MADCTL_BGR;
-	mipi_dbi_command(dbi, MIPI_DCS_SET_ADDRESS_MODE, addr_mode);
-	mipi_dbi_enable_flush(dbidev, crtc_state, plane_state);
-out_exit:
-	drm_dev_exit(idx);
-}
-
-static const struct drm_simple_display_pipe_funcs mi0283qt_pipe_funcs = {
-	.enable = mi0283qt_enable,
-	.disable = mipi_dbi_pipe_disable,
-	.update = mipi_dbi_pipe_update,
-	.prepare_fb = drm_gem_fb_simple_display_pipe_prepare_fb,
-};
-
-static const struct drm_display_mode mi0283qt_mode = {
-	DRM_SIMPLE_MODE(320, 240, 58, 43),
-};
-
-DEFINE_DRM_GEM_CMA_FOPS(mi0283qt_fops);
-
-static struct drm_driver mi0283qt_driver = {
-	.driver_features	= DRIVER_GEM | DRIVER_MODESET | DRIVER_ATOMIC,
-	.fops			= &mi0283qt_fops,
-	.release		= mipi_dbi_release,
-	DRM_GEM_CMA_VMAP_DRIVER_OPS,
-	.debugfs_init		= mipi_dbi_debugfs_init,
-	.name			= "mi0283qt",
-	.desc			= "Multi-Inno MI0283QT",
-	.date			= "20160614",
-	.major			= 1,
-	.minor			= 0,
-};
-
-static const struct of_device_id mi0283qt_of_match[] = {
-	{ .compatible = "multi-inno,mi0283qt" },
-	{},
-};
-MODULE_DEVICE_TABLE(of, mi0283qt_of_match);
-
-static const struct spi_device_id mi0283qt_id[] = {
-	{ "mi0283qt", 0 },
-	{ },
-};
-MODULE_DEVICE_TABLE(spi, mi0283qt_id);
-
-static int mi0283qt_probe(struct spi_device *spi)
-{
-	struct device *dev = &spi->dev;
-	struct mipi_dbi_dev *dbidev;
-	struct drm_device *drm;
-	struct mipi_dbi *dbi;
-	struct gpio_desc *dc;
-	u32 rotation = 0;
-	int ret;
-
-	dbidev = kzalloc(sizeof(*dbidev), GFP_KERNEL);
-	if (!dbidev)
-		return -ENOMEM;
-
-	dbi = &dbidev->dbi;
-	drm = &dbidev->drm;
-	ret = devm_drm_dev_init(dev, drm, &mi0283qt_driver);
-	if (ret) {
-		kfree(dbidev);
-		return ret;
-	}
-
-	drm_mode_config_init(drm);
-
-	dbi->reset = devm_gpiod_get_optional(dev, "reset", GPIOD_OUT_HIGH);
-	if (IS_ERR(dbi->reset)) {
-		DRM_DEV_ERROR(dev, "Failed to get gpio 'reset'\n");
-		return PTR_ERR(dbi->reset);
-	}
-
-	dc = devm_gpiod_get_optional(dev, "dc", GPIOD_OUT_LOW);
-	if (IS_ERR(dc)) {
-		DRM_DEV_ERROR(dev, "Failed to get gpio 'dc'\n");
-		return PTR_ERR(dc);
-	}
-
-	dbidev->regulator = devm_regulator_get(dev, "power");
-	if (IS_ERR(dbidev->regulator))
-		return PTR_ERR(dbidev->regulator);
-
-	dbidev->backlight = devm_of_find_backlight(dev);
-	if (IS_ERR(dbidev->backlight))
-		return PTR_ERR(dbidev->backlight);
-
-	device_property_read_u32(dev, "rotation", &rotation);
-
-	ret = mipi_dbi_spi_init(spi, dbi, dc);
-	if (ret)
-		return ret;
-
-	ret = mipi_dbi_dev_init(dbidev, &mi0283qt_pipe_funcs, &mi0283qt_mode, rotation);
-	if (ret)
-		return ret;
-
-	drm_mode_config_reset(drm);
-
-	ret = drm_dev_register(drm, 0);
-	if (ret)
-		return ret;
-
-	spi_set_drvdata(spi, drm);
-
-	drm_fbdev_generic_setup(drm, 0);
-
-	return 0;
-}
-
-static int mi0283qt_remove(struct spi_device *spi)
-{
-	struct drm_device *drm = spi_get_drvdata(spi);
-
-	drm_dev_unplug(drm);
-	drm_atomic_helper_shutdown(drm);
-
-	return 0;
-}
-
-static void mi0283qt_shutdown(struct spi_device *spi)
-{
-	drm_atomic_helper_shutdown(spi_get_drvdata(spi));
-}
-
-static int __maybe_unused mi0283qt_pm_suspend(struct device *dev)
-{
-	return drm_mode_config_helper_suspend(dev_get_drvdata(dev));
-}
-
-static int __maybe_unused mi0283qt_pm_resume(struct device *dev)
-{
-	drm_mode_config_helper_resume(dev_get_drvdata(dev));
-
-	return 0;
-}
-
-static const struct dev_pm_ops mi0283qt_pm_ops = {
-	SET_SYSTEM_SLEEP_PM_OPS(mi0283qt_pm_suspend, mi0283qt_pm_resume)
-};
-
-static struct spi_driver mi0283qt_spi_driver = {
-	.driver = {
-		.name = "mi0283qt",
-		.owner = THIS_MODULE,
-		.of_match_table = mi0283qt_of_match,
-		.pm = &mi0283qt_pm_ops,
-	},
-	.id_table = mi0283qt_id,
-	.probe = mi0283qt_probe,
-	.remove = mi0283qt_remove,
-	.shutdown = mi0283qt_shutdown,
-};
-module_spi_driver(mi0283qt_spi_driver);
-
-MODULE_DESCRIPTION("Multi-Inno MI0283QT DRM driver");
-MODULE_AUTHOR("Noralf Trønnes");
-MODULE_LICENSE("GPL");
diff --git a/drivers/gpu/drm/tinydrm/repaper.c b/drivers/gpu/drm/tinydrm/repaper.c
deleted file mode 100644
index 76d179200775..000000000000
--- a/drivers/gpu/drm/tinydrm/repaper.c
+++ /dev/null
@@ -1,1212 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0-or-later
-/*
- * DRM driver for Pervasive Displays RePaper branded e-ink panels
- *
- * Copyright 2013-2017 Pervasive Displays, Inc.
- * Copyright 2017 Noralf Trønnes
- *
- * The driver supports:
- * Material Film: Aurora Mb (V231)
- * Driver IC: G2 (eTC)
- *
- * The controller code was taken from the userspace driver:
- * https://github.com/repaper/gratis
- */
-
-#include <linux/delay.h>
-#include <linux/dma-buf.h>
-#include <linux/gpio/consumer.h>
-#include <linux/module.h>
-#include <linux/of_device.h>
-#include <linux/sched/clock.h>
-#include <linux/spi/spi.h>
-#include <linux/thermal.h>
-
-#include <drm/drm_atomic_helper.h>
-#include <drm/drm_connector.h>
-#include <drm/drm_damage_helper.h>
-#include <drm/drm_drv.h>
-#include <drm/drm_fb_cma_helper.h>
-#include <drm/drm_fb_helper.h>
-#include <drm/drm_format_helper.h>
-#include <drm/drm_gem_cma_helper.h>
-#include <drm/drm_gem_framebuffer_helper.h>
-#include <drm/drm_modes.h>
-#include <drm/drm_rect.h>
-#include <drm/drm_vblank.h>
-#include <drm/drm_probe_helper.h>
-#include <drm/drm_simple_kms_helper.h>
-
-#define REPAPER_RID_G2_COG_ID	0x12
-
-enum repaper_model {
-	E1144CS021 = 1,
-	E1190CS021,
-	E2200CS021,
-	E2271CS021,
-};
-
-enum repaper_stage {         /* Image pixel -> Display pixel */
-	REPAPER_COMPENSATE,  /* B -> W, W -> B (Current Image) */
-	REPAPER_WHITE,       /* B -> N, W -> W (Current Image) */
-	REPAPER_INVERSE,     /* B -> N, W -> B (New Image) */
-	REPAPER_NORMAL       /* B -> B, W -> W (New Image) */
-};
-
-enum repaper_epd_border_byte {
-	REPAPER_BORDER_BYTE_NONE,
-	REPAPER_BORDER_BYTE_ZERO,
-	REPAPER_BORDER_BYTE_SET,
-};
-
-struct repaper_epd {
-	struct drm_device drm;
-	struct drm_simple_display_pipe pipe;
-	const struct drm_display_mode *mode;
-	struct drm_connector connector;
-	struct spi_device *spi;
-
-	struct gpio_desc *panel_on;
-	struct gpio_desc *border;
-	struct gpio_desc *discharge;
-	struct gpio_desc *reset;
-	struct gpio_desc *busy;
-
-	struct thermal_zone_device *thermal;
-
-	unsigned int height;
-	unsigned int width;
-	unsigned int bytes_per_scan;
-	const u8 *channel_select;
-	unsigned int stage_time;
-	unsigned int factored_stage_time;
-	bool middle_scan;
-	bool pre_border_byte;
-	enum repaper_epd_border_byte border_byte;
-
-	u8 *line_buffer;
-	void *current_frame;
-
-	bool enabled;
-	bool cleared;
-	bool partial;
-};
-
-static inline struct repaper_epd *drm_to_epd(struct drm_device *drm)
-{
-	return container_of(drm, struct repaper_epd, drm);
-}
-
-static int repaper_spi_transfer(struct spi_device *spi, u8 header,
-				const void *tx, void *rx, size_t len)
-{
-	void *txbuf = NULL, *rxbuf = NULL;
-	struct spi_transfer tr[2] = {};
-	u8 *headerbuf;
-	int ret;
-
-	headerbuf = kmalloc(1, GFP_KERNEL);
-	if (!headerbuf)
-		return -ENOMEM;
-
-	headerbuf[0] = header;
-	tr[0].tx_buf = headerbuf;
-	tr[0].len = 1;
-
-	/* Stack allocated tx? */
-	if (tx && len <= 32) {
-		txbuf = kmemdup(tx, len, GFP_KERNEL);
-		if (!txbuf) {
-			ret = -ENOMEM;
-			goto out_free;
-		}
-	}
-
-	if (rx) {
-		rxbuf = kmalloc(len, GFP_KERNEL);
-		if (!rxbuf) {
-			ret = -ENOMEM;
-			goto out_free;
-		}
-	}
-
-	tr[1].tx_buf = txbuf ? txbuf : tx;
-	tr[1].rx_buf = rxbuf;
-	tr[1].len = len;
-
-	ndelay(80);
-	ret = spi_sync_transfer(spi, tr, 2);
-	if (rx && !ret)
-		memcpy(rx, rxbuf, len);
-
-out_free:
-	kfree(headerbuf);
-	kfree(txbuf);
-	kfree(rxbuf);
-
-	return ret;
-}
-
-static int repaper_write_buf(struct spi_device *spi, u8 reg,
-			     const u8 *buf, size_t len)
-{
-	int ret;
-
-	ret = repaper_spi_transfer(spi, 0x70, &reg, NULL, 1);
-	if (ret)
-		return ret;
-
-	return repaper_spi_transfer(spi, 0x72, buf, NULL, len);
-}
-
-static int repaper_write_val(struct spi_device *spi, u8 reg, u8 val)
-{
-	return repaper_write_buf(spi, reg, &val, 1);
-}
-
-static int repaper_read_val(struct spi_device *spi, u8 reg)
-{
-	int ret;
-	u8 val;
-
-	ret = repaper_spi_transfer(spi, 0x70, &reg, NULL, 1);
-	if (ret)
-		return ret;
-
-	ret = repaper_spi_transfer(spi, 0x73, NULL, &val, 1);
-
-	return ret ? ret : val;
-}
-
-static int repaper_read_id(struct spi_device *spi)
-{
-	int ret;
-	u8 id;
-
-	ret = repaper_spi_transfer(spi, 0x71, NULL, &id, 1);
-
-	return ret ? ret : id;
-}
-
-static void repaper_spi_mosi_low(struct spi_device *spi)
-{
-	const u8 buf[1] = { 0 };
-
-	spi_write(spi, buf, 1);
-}
-
-/* pixels on display are numbered from 1 so even is actually bits 1,3,5,... */
-static void repaper_even_pixels(struct repaper_epd *epd, u8 **pp,
-				const u8 *data, u8 fixed_value, const u8 *mask,
-				enum repaper_stage stage)
-{
-	unsigned int b;
-
-	for (b = 0; b < (epd->width / 8); b++) {
-		if (data) {
-			u8 pixels = data[b] & 0xaa;
-			u8 pixel_mask = 0xff;
-			u8 p1, p2, p3, p4;
-
-			if (mask) {
-				pixel_mask = (mask[b] ^ pixels) & 0xaa;
-				pixel_mask |= pixel_mask >> 1;
-			}
-
-			switch (stage) {
-			case REPAPER_COMPENSATE: /* B -> W, W -> B (Current) */
-				pixels = 0xaa | ((pixels ^ 0xaa) >> 1);
-				break;
-			case REPAPER_WHITE:      /* B -> N, W -> W (Current) */
-				pixels = 0x55 + ((pixels ^ 0xaa) >> 1);
-				break;
-			case REPAPER_INVERSE:    /* B -> N, W -> B (New) */
-				pixels = 0x55 | (pixels ^ 0xaa);
-				break;
-			case REPAPER_NORMAL:     /* B -> B, W -> W (New) */
-				pixels = 0xaa | (pixels >> 1);
-				break;
-			}
-
-			pixels = (pixels & pixel_mask) | (~pixel_mask & 0x55);
-			p1 = (pixels >> 6) & 0x03;
-			p2 = (pixels >> 4) & 0x03;
-			p3 = (pixels >> 2) & 0x03;
-			p4 = (pixels >> 0) & 0x03;
-			pixels = (p1 << 0) | (p2 << 2) | (p3 << 4) | (p4 << 6);
-			*(*pp)++ = pixels;
-		} else {
-			*(*pp)++ = fixed_value;
-		}
-	}
-}
-
-/* pixels on display are numbered from 1 so odd is actually bits 0,2,4,... */
-static void repaper_odd_pixels(struct repaper_epd *epd, u8 **pp,
-			       const u8 *data, u8 fixed_value, const u8 *mask,
-			       enum repaper_stage stage)
-{
-	unsigned int b;
-
-	for (b = epd->width / 8; b > 0; b--) {
-		if (data) {
-			u8 pixels = data[b - 1] & 0x55;
-			u8 pixel_mask = 0xff;
-
-			if (mask) {
-				pixel_mask = (mask[b - 1] ^ pixels) & 0x55;
-				pixel_mask |= pixel_mask << 1;
-			}
-
-			switch (stage) {
-			case REPAPER_COMPENSATE: /* B -> W, W -> B (Current) */
-				pixels = 0xaa | (pixels ^ 0x55);
-				break;
-			case REPAPER_WHITE:      /* B -> N, W -> W (Current) */
-				pixels = 0x55 + (pixels ^ 0x55);
-				break;
-			case REPAPER_INVERSE:    /* B -> N, W -> B (New) */
-				pixels = 0x55 | ((pixels ^ 0x55) << 1);
-				break;
-			case REPAPER_NORMAL:     /* B -> B, W -> W (New) */
-				pixels = 0xaa | pixels;
-				break;
-			}
-
-			pixels = (pixels & pixel_mask) | (~pixel_mask & 0x55);
-			*(*pp)++ = pixels;
-		} else {
-			*(*pp)++ = fixed_value;
-		}
-	}
-}
-
-/* interleave bits: (byte)76543210 -> (16 bit).7.6.5.4.3.2.1 */
-static inline u16 repaper_interleave_bits(u16 value)
-{
-	value = (value | (value << 4)) & 0x0f0f;
-	value = (value | (value << 2)) & 0x3333;
-	value = (value | (value << 1)) & 0x5555;
-
-	return value;
-}
-
-/* pixels on display are numbered from 1 */
-static void repaper_all_pixels(struct repaper_epd *epd, u8 **pp,
-			       const u8 *data, u8 fixed_value, const u8 *mask,
-			       enum repaper_stage stage)
-{
-	unsigned int b;
-
-	for (b = epd->width / 8; b > 0; b--) {
-		if (data) {
-			u16 pixels = repaper_interleave_bits(data[b - 1]);
-			u16 pixel_mask = 0xffff;
-
-			if (mask) {
-				pixel_mask = repaper_interleave_bits(mask[b - 1]);
-
-				pixel_mask = (pixel_mask ^ pixels) & 0x5555;
-				pixel_mask |= pixel_mask << 1;
-			}
-
-			switch (stage) {
-			case REPAPER_COMPENSATE: /* B -> W, W -> B (Current) */
-				pixels = 0xaaaa | (pixels ^ 0x5555);
-				break;
-			case REPAPER_WHITE:      /* B -> N, W -> W (Current) */
-				pixels = 0x5555 + (pixels ^ 0x5555);
-				break;
-			case REPAPER_INVERSE:    /* B -> N, W -> B (New) */
-				pixels = 0x5555 | ((pixels ^ 0x5555) << 1);
-				break;
-			case REPAPER_NORMAL:     /* B -> B, W -> W (New) */
-				pixels = 0xaaaa | pixels;
-				break;
-			}
-
-			pixels = (pixels & pixel_mask) | (~pixel_mask & 0x5555);
-			*(*pp)++ = pixels >> 8;
-			*(*pp)++ = pixels;
-		} else {
-			*(*pp)++ = fixed_value;
-			*(*pp)++ = fixed_value;
-		}
-	}
-}
-
-/* output one line of scan and data bytes to the display */
-static void repaper_one_line(struct repaper_epd *epd, unsigned int line,
-			     const u8 *data, u8 fixed_value, const u8 *mask,
-			     enum repaper_stage stage)
-{
-	u8 *p = epd->line_buffer;
-	unsigned int b;
-
-	repaper_spi_mosi_low(epd->spi);
-
-	if (epd->pre_border_byte)
-		*p++ = 0x00;
-
-	if (epd->middle_scan) {
-		/* data bytes */
-		repaper_odd_pixels(epd, &p, data, fixed_value, mask, stage);
-
-		/* scan line */
-		for (b = epd->bytes_per_scan; b > 0; b--) {
-			if (line / 4 == b - 1)
-				*p++ = 0x03 << (2 * (line & 0x03));
-			else
-				*p++ = 0x00;
-		}
-
-		/* data bytes */
-		repaper_even_pixels(epd, &p, data, fixed_value, mask, stage);
-	} else {
-		/*
-		 * even scan line, but as lines on display are numbered from 1,
-		 * line: 1,3,5,...
-		 */
-		for (b = 0; b < epd->bytes_per_scan; b++) {
-			if (0 != (line & 0x01) && line / 8 == b)
-				*p++ = 0xc0 >> (line & 0x06);
-			else
-				*p++ = 0x00;
-		}
-
-		/* data bytes */
-		repaper_all_pixels(epd, &p, data, fixed_value, mask, stage);
-
-		/*
-		 * odd scan line, but as lines on display are numbered from 1,
-		 * line: 0,2,4,6,...
-		 */
-		for (b = epd->bytes_per_scan; b > 0; b--) {
-			if (0 == (line & 0x01) && line / 8 == b - 1)
-				*p++ = 0x03 << (line & 0x06);
-			else
-				*p++ = 0x00;
-		}
-	}
-
-	switch (epd->border_byte) {
-	case REPAPER_BORDER_BYTE_NONE:
-		break;
-
-	case REPAPER_BORDER_BYTE_ZERO:
-		*p++ = 0x00;
-		break;
-
-	case REPAPER_BORDER_BYTE_SET:
-		switch (stage) {
-		case REPAPER_COMPENSATE:
-		case REPAPER_WHITE:
-		case REPAPER_INVERSE:
-			*p++ = 0x00;
-			break;
-		case REPAPER_NORMAL:
-			*p++ = 0xaa;
-			break;
-		}
-		break;
-	}
-
-	repaper_write_buf(epd->spi, 0x0a, epd->line_buffer,
-			  p - epd->line_buffer);
-
-	/* Output data to panel */
-	repaper_write_val(epd->spi, 0x02, 0x07);
-
-	repaper_spi_mosi_low(epd->spi);
-}
-
-static void repaper_frame_fixed(struct repaper_epd *epd, u8 fixed_value,
-				enum repaper_stage stage)
-{
-	unsigned int line;
-
-	for (line = 0; line < epd->height; line++)
-		repaper_one_line(epd, line, NULL, fixed_value, NULL, stage);
-}
-
-static void repaper_frame_data(struct repaper_epd *epd, const u8 *image,
-			       const u8 *mask, enum repaper_stage stage)
-{
-	unsigned int line;
-
-	if (!mask) {
-		for (line = 0; line < epd->height; line++) {
-			repaper_one_line(epd, line,
-					 &image[line * (epd->width / 8)],
-					 0, NULL, stage);
-		}
-	} else {
-		for (line = 0; line < epd->height; line++) {
-			size_t n = line * epd->width / 8;
-
-			repaper_one_line(epd, line, &image[n], 0, &mask[n],
-					 stage);
-		}
-	}
-}
-
-static void repaper_frame_fixed_repeat(struct repaper_epd *epd, u8 fixed_value,
-				       enum repaper_stage stage)
-{
-	u64 start = local_clock();
-	u64 end = start + (epd->factored_stage_time * 1000 * 1000);
-
-	do {
-		repaper_frame_fixed(epd, fixed_value, stage);
-	} while (local_clock() < end);
-}
-
-static void repaper_frame_data_repeat(struct repaper_epd *epd, const u8 *image,
-				      const u8 *mask, enum repaper_stage stage)
-{
-	u64 start = local_clock();
-	u64 end = start + (epd->factored_stage_time * 1000 * 1000);
-
-	do {
-		repaper_frame_data(epd, image, mask, stage);
-	} while (local_clock() < end);
-}
-
-static void repaper_get_temperature(struct repaper_epd *epd)
-{
-	int ret, temperature = 0;
-	unsigned int factor10x;
-
-	if (!epd->thermal)
-		return;
-
-	ret = thermal_zone_get_temp(epd->thermal, &temperature);
-	if (ret) {
-		DRM_DEV_ERROR(&epd->spi->dev, "Failed to get temperature (%d)\n", ret);
-		return;
-	}
-
-	temperature /= 1000;
-
-	if (temperature <= -10)
-		factor10x = 170;
-	else if (temperature <= -5)
-		factor10x = 120;
-	else if (temperature <= 5)
-		factor10x = 80;
-	else if (temperature <= 10)
-		factor10x = 40;
-	else if (temperature <= 15)
-		factor10x = 30;
-	else if (temperature <= 20)
-		factor10x = 20;
-	else if (temperature <= 40)
-		factor10x = 10;
-	else
-		factor10x = 7;
-
-	epd->factored_stage_time = epd->stage_time * factor10x / 10;
-}
-
-static void repaper_gray8_to_mono_reversed(u8 *buf, u32 width, u32 height)
-{
-	u8 *gray8 = buf, *mono = buf;
-	int y, xb, i;
-
-	for (y = 0; y < height; y++)
-		for (xb = 0; xb < width / 8; xb++) {
-			u8 byte = 0x00;
-
-			for (i = 0; i < 8; i++) {
-				int x = xb * 8 + i;
-
-				byte >>= 1;
-				if (gray8[y * width + x] >> 7)
-					byte |= BIT(7);
-			}
-			*mono++ = byte;
-		}
-}
-
-static int repaper_fb_dirty(struct drm_framebuffer *fb)
-{
-	struct drm_gem_cma_object *cma_obj = drm_fb_cma_get_gem_obj(fb, 0);
-	struct dma_buf_attachment *import_attach = cma_obj->base.import_attach;
-	struct repaper_epd *epd = drm_to_epd(fb->dev);
-	struct drm_rect clip;
-	int idx, ret = 0;
-	u8 *buf = NULL;
-
-	if (!epd->enabled)
-		return 0;
-
-	if (!drm_dev_enter(fb->dev, &idx))
-		return -ENODEV;
-
-	/* repaper can't do partial updates */
-	clip.x1 = 0;
-	clip.x2 = fb->width;
-	clip.y1 = 0;
-	clip.y2 = fb->height;
-
-	repaper_get_temperature(epd);
-
-	DRM_DEBUG("Flushing [FB:%d] st=%ums\n", fb->base.id,
-		  epd->factored_stage_time);
-
-	buf = kmalloc_array(fb->width, fb->height, GFP_KERNEL);
-	if (!buf) {
-		ret = -ENOMEM;
-		goto out_exit;
-	}
-
-	if (import_attach) {
-		ret = dma_buf_begin_cpu_access(import_attach->dmabuf,
-					       DMA_FROM_DEVICE);
-		if (ret)
-			goto out_free;
-	}
-
-	drm_fb_xrgb8888_to_gray8(buf, cma_obj->vaddr, fb, &clip);
-
-	if (import_attach) {
-		ret = dma_buf_end_cpu_access(import_attach->dmabuf,
-					     DMA_FROM_DEVICE);
-		if (ret)
-			goto out_free;
-	}
-
-	repaper_gray8_to_mono_reversed(buf, fb->width, fb->height);
-
-	if (epd->partial) {
-		repaper_frame_data_repeat(epd, buf, epd->current_frame,
-					  REPAPER_NORMAL);
-	} else if (epd->cleared) {
-		repaper_frame_data_repeat(epd, epd->current_frame, NULL,
-					  REPAPER_COMPENSATE);
-		repaper_frame_data_repeat(epd, epd->current_frame, NULL,
-					  REPAPER_WHITE);
-		repaper_frame_data_repeat(epd, buf, NULL, REPAPER_INVERSE);
-		repaper_frame_data_repeat(epd, buf, NULL, REPAPER_NORMAL);
-
-		epd->partial = true;
-	} else {
-		/* Clear display (anything -> white) */
-		repaper_frame_fixed_repeat(epd, 0xff, REPAPER_COMPENSATE);
-		repaper_frame_fixed_repeat(epd, 0xff, REPAPER_WHITE);
-		repaper_frame_fixed_repeat(epd, 0xaa, REPAPER_INVERSE);
-		repaper_frame_fixed_repeat(epd, 0xaa, REPAPER_NORMAL);
-
-		/* Assuming a clear (white) screen output an image */
-		repaper_frame_fixed_repeat(epd, 0xaa, REPAPER_COMPENSATE);
-		repaper_frame_fixed_repeat(epd, 0xaa, REPAPER_WHITE);
-		repaper_frame_data_repeat(epd, buf, NULL, REPAPER_INVERSE);
-		repaper_frame_data_repeat(epd, buf, NULL, REPAPER_NORMAL);
-
-		epd->cleared = true;
-		epd->partial = true;
-	}
-
-	memcpy(epd->current_frame, buf, fb->width * fb->height / 8);
-
-	/*
-	 * An extra frame write is needed if pixels are set in the bottom line,
-	 * or else grey lines rises up from the pixels
-	 */
-	if (epd->pre_border_byte) {
-		unsigned int x;
-
-		for (x = 0; x < (fb->width / 8); x++)
-			if (buf[x + (fb->width * (fb->height - 1) / 8)]) {
-				repaper_frame_data_repeat(epd, buf,
-							  epd->current_frame,
-							  REPAPER_NORMAL);
-				break;
-			}
-	}
-
-out_free:
-	kfree(buf);
-out_exit:
-	drm_dev_exit(idx);
-
-	return ret;
-}
-
-static void power_off(struct repaper_epd *epd)
-{
-	/* Turn off power and all signals */
-	gpiod_set_value_cansleep(epd->reset, 0);
-	gpiod_set_value_cansleep(epd->panel_on, 0);
-	if (epd->border)
-		gpiod_set_value_cansleep(epd->border, 0);
-
-	/* Ensure SPI MOSI and CLOCK are Low before CS Low */
-	repaper_spi_mosi_low(epd->spi);
-
-	/* Discharge pulse */
-	gpiod_set_value_cansleep(epd->discharge, 1);
-	msleep(150);
-	gpiod_set_value_cansleep(epd->discharge, 0);
-}
-
-static void repaper_pipe_enable(struct drm_simple_display_pipe *pipe,
-				struct drm_crtc_state *crtc_state,
-				struct drm_plane_state *plane_state)
-{
-	struct repaper_epd *epd = drm_to_epd(pipe->crtc.dev);
-	struct spi_device *spi = epd->spi;
-	struct device *dev = &spi->dev;
-	bool dc_ok = false;
-	int i, ret, idx;
-
-	if (!drm_dev_enter(pipe->crtc.dev, &idx))
-		return;
-
-	DRM_DEBUG_DRIVER("\n");
-
-	/* Power up sequence */
-	gpiod_set_value_cansleep(epd->reset, 0);
-	gpiod_set_value_cansleep(epd->panel_on, 0);
-	gpiod_set_value_cansleep(epd->discharge, 0);
-	if (epd->border)
-		gpiod_set_value_cansleep(epd->border, 0);
-	repaper_spi_mosi_low(spi);
-	usleep_range(5000, 10000);
-
-	gpiod_set_value_cansleep(epd->panel_on, 1);
-	/*
-	 * This delay comes from the repaper.org userspace driver, it's not
-	 * mentioned in the datasheet.
-	 */
-	usleep_range(10000, 15000);
-	gpiod_set_value_cansleep(epd->reset, 1);
-	if (epd->border)
-		gpiod_set_value_cansleep(epd->border, 1);
-	usleep_range(5000, 10000);
-	gpiod_set_value_cansleep(epd->reset, 0);
-	usleep_range(5000, 10000);
-	gpiod_set_value_cansleep(epd->reset, 1);
-	usleep_range(5000, 10000);
-
-	/* Wait for COG to become ready */
-	for (i = 100; i > 0; i--) {
-		if (!gpiod_get_value_cansleep(epd->busy))
-			break;
-
-		usleep_range(10, 100);
-	}
-
-	if (!i) {
-		DRM_DEV_ERROR(dev, "timeout waiting for panel to become ready.\n");
-		power_off(epd);
-		goto out_exit;
-	}
-
-	repaper_read_id(spi);
-	ret = repaper_read_id(spi);
-	if (ret != REPAPER_RID_G2_COG_ID) {
-		if (ret < 0)
-			dev_err(dev, "failed to read chip (%d)\n", ret);
-		else
-			dev_err(dev, "wrong COG ID 0x%02x\n", ret);
-		power_off(epd);
-		goto out_exit;
-	}
-
-	/* Disable OE */
-	repaper_write_val(spi, 0x02, 0x40);
-
-	ret = repaper_read_val(spi, 0x0f);
-	if (ret < 0 || !(ret & 0x80)) {
-		if (ret < 0)
-			DRM_DEV_ERROR(dev, "failed to read chip (%d)\n", ret);
-		else
-			DRM_DEV_ERROR(dev, "panel is reported broken\n");
-		power_off(epd);
-		goto out_exit;
-	}
-
-	/* Power saving mode */
-	repaper_write_val(spi, 0x0b, 0x02);
-	/* Channel select */
-	repaper_write_buf(spi, 0x01, epd->channel_select, 8);
-	/* High power mode osc */
-	repaper_write_val(spi, 0x07, 0xd1);
-	/* Power setting */
-	repaper_write_val(spi, 0x08, 0x02);
-	/* Vcom level */
-	repaper_write_val(spi, 0x09, 0xc2);
-	/* Power setting */
-	repaper_write_val(spi, 0x04, 0x03);
-	/* Driver latch on */
-	repaper_write_val(spi, 0x03, 0x01);
-	/* Driver latch off */
-	repaper_write_val(spi, 0x03, 0x00);
-	usleep_range(5000, 10000);
-
-	/* Start chargepump */
-	for (i = 0; i < 4; ++i) {
-		/* Charge pump positive voltage on - VGH/VDL on */
-		repaper_write_val(spi, 0x05, 0x01);
-		msleep(240);
-
-		/* Charge pump negative voltage on - VGL/VDL on */
-		repaper_write_val(spi, 0x05, 0x03);
-		msleep(40);
-
-		/* Charge pump Vcom on - Vcom driver on */
-		repaper_write_val(spi, 0x05, 0x0f);
-		msleep(40);
-
-		/* check DC/DC */
-		ret = repaper_read_val(spi, 0x0f);
-		if (ret < 0) {
-			DRM_DEV_ERROR(dev, "failed to read chip (%d)\n", ret);
-			power_off(epd);
-			goto out_exit;
-		}
-
-		if (ret & 0x40) {
-			dc_ok = true;
-			break;
-		}
-	}
-
-	if (!dc_ok) {
-		DRM_DEV_ERROR(dev, "dc/dc failed\n");
-		power_off(epd);
-		goto out_exit;
-	}
-
-	/*
-	 * Output enable to disable
-	 * The userspace driver sets this to 0x04, but the datasheet says 0x06
-	 */
-	repaper_write_val(spi, 0x02, 0x04);
-
-	epd->enabled = true;
-	epd->partial = false;
-out_exit:
-	drm_dev_exit(idx);
-}
-
-static void repaper_pipe_disable(struct drm_simple_display_pipe *pipe)
-{
-	struct repaper_epd *epd = drm_to_epd(pipe->crtc.dev);
-	struct spi_device *spi = epd->spi;
-	unsigned int line;
-
-	/*
-	 * This callback is not protected by drm_dev_enter/exit since we want to
-	 * turn off the display on regular driver unload. It's highly unlikely
-	 * that the underlying SPI controller is gone should this be called after
-	 * unplug.
-	 */
-
-	if (!epd->enabled)
-		return;
-
-	DRM_DEBUG_DRIVER("\n");
-
-	epd->enabled = false;
-
-	/* Nothing frame */
-	for (line = 0; line < epd->height; line++)
-		repaper_one_line(epd, 0x7fffu, NULL, 0x00, NULL,
-				 REPAPER_COMPENSATE);
-
-	/* 2.7" */
-	if (epd->border) {
-		/* Dummy line */
-		repaper_one_line(epd, 0x7fffu, NULL, 0x00, NULL,
-				 REPAPER_COMPENSATE);
-		msleep(25);
-		gpiod_set_value_cansleep(epd->border, 0);
-		msleep(200);
-		gpiod_set_value_cansleep(epd->border, 1);
-	} else {
-		/* Border dummy line */
-		repaper_one_line(epd, 0x7fffu, NULL, 0x00, NULL,
-				 REPAPER_NORMAL);
-		msleep(200);
-	}
-
-	/* not described in datasheet */
-	repaper_write_val(spi, 0x0b, 0x00);
-	/* Latch reset turn on */
-	repaper_write_val(spi, 0x03, 0x01);
-	/* Power off charge pump Vcom */
-	repaper_write_val(spi, 0x05, 0x03);
-	/* Power off charge pump neg voltage */
-	repaper_write_val(spi, 0x05, 0x01);
-	msleep(120);
-	/* Discharge internal */
-	repaper_write_val(spi, 0x04, 0x80);
-	/* turn off all charge pumps */
-	repaper_write_val(spi, 0x05, 0x00);
-	/* Turn off osc */
-	repaper_write_val(spi, 0x07, 0x01);
-	msleep(50);
-
-	power_off(epd);
-}
-
-static void repaper_pipe_update(struct drm_simple_display_pipe *pipe,
-				struct drm_plane_state *old_state)
-{
-	struct drm_plane_state *state = pipe->plane.state;
-	struct drm_crtc *crtc = &pipe->crtc;
-	struct drm_rect rect;
-
-	if (drm_atomic_helper_damage_merged(old_state, state, &rect))
-		repaper_fb_dirty(state->fb);
-
-	if (crtc->state->event) {
-		spin_lock_irq(&crtc->dev->event_lock);
-		drm_crtc_send_vblank_event(crtc, crtc->state->event);
-		spin_unlock_irq(&crtc->dev->event_lock);
-		crtc->state->event = NULL;
-	}
-}
-
-static const struct drm_simple_display_pipe_funcs repaper_pipe_funcs = {
-	.enable = repaper_pipe_enable,
-	.disable = repaper_pipe_disable,
-	.update = repaper_pipe_update,
-	.prepare_fb = drm_gem_fb_simple_display_pipe_prepare_fb,
-};
-
-static int repaper_connector_get_modes(struct drm_connector *connector)
-{
-	struct repaper_epd *epd = drm_to_epd(connector->dev);
-	struct drm_display_mode *mode;
-
-	mode = drm_mode_duplicate(connector->dev, epd->mode);
-	if (!mode) {
-		DRM_ERROR("Failed to duplicate mode\n");
-		return 0;
-	}
-
-	drm_mode_set_name(mode);
-	mode->type |= DRM_MODE_TYPE_PREFERRED;
-	drm_mode_probed_add(connector, mode);
-
-	connector->display_info.width_mm = mode->width_mm;
-	connector->display_info.height_mm = mode->height_mm;
-
-	return 1;
-}
-
-static const struct drm_connector_helper_funcs repaper_connector_hfuncs = {
-	.get_modes = repaper_connector_get_modes,
-};
-
-static const struct drm_connector_funcs repaper_connector_funcs = {
-	.reset = drm_atomic_helper_connector_reset,
-	.fill_modes = drm_helper_probe_single_connector_modes,
-	.destroy = drm_connector_cleanup,
-	.atomic_duplicate_state = drm_atomic_helper_connector_duplicate_state,
-	.atomic_destroy_state = drm_atomic_helper_connector_destroy_state,
-};
-
-static const struct drm_mode_config_funcs repaper_mode_config_funcs = {
-	.fb_create = drm_gem_fb_create_with_dirty,
-	.atomic_check = drm_atomic_helper_check,
-	.atomic_commit = drm_atomic_helper_commit,
-};
-
-static void repaper_release(struct drm_device *drm)
-{
-	struct repaper_epd *epd = drm_to_epd(drm);
-
-	DRM_DEBUG_DRIVER("\n");
-
-	drm_mode_config_cleanup(drm);
-	drm_dev_fini(drm);
-	kfree(epd);
-}
-
-static const uint32_t repaper_formats[] = {
-	DRM_FORMAT_XRGB8888,
-};
-
-static const struct drm_display_mode repaper_e1144cs021_mode = {
-	DRM_SIMPLE_MODE(128, 96, 29, 22),
-};
-
-static const u8 repaper_e1144cs021_cs[] = { 0x00, 0x00, 0x00, 0x00,
-					    0x00, 0x0f, 0xff, 0x00 };
-
-static const struct drm_display_mode repaper_e1190cs021_mode = {
-	DRM_SIMPLE_MODE(144, 128, 36, 32),
-};
-
-static const u8 repaper_e1190cs021_cs[] = { 0x00, 0x00, 0x00, 0x03,
-					    0xfc, 0x00, 0x00, 0xff };
-
-static const struct drm_display_mode repaper_e2200cs021_mode = {
-	DRM_SIMPLE_MODE(200, 96, 46, 22),
-};
-
-static const u8 repaper_e2200cs021_cs[] = { 0x00, 0x00, 0x00, 0x00,
-					    0x01, 0xff, 0xe0, 0x00 };
-
-static const struct drm_display_mode repaper_e2271cs021_mode = {
-	DRM_SIMPLE_MODE(264, 176, 57, 38),
-};
-
-static const u8 repaper_e2271cs021_cs[] = { 0x00, 0x00, 0x00, 0x7f,
-					    0xff, 0xfe, 0x00, 0x00 };
-
-DEFINE_DRM_GEM_CMA_FOPS(repaper_fops);
-
-static struct drm_driver repaper_driver = {
-	.driver_features	= DRIVER_GEM | DRIVER_MODESET | DRIVER_ATOMIC,
-	.fops			= &repaper_fops,
-	.release		= repaper_release,
-	DRM_GEM_CMA_VMAP_DRIVER_OPS,
-	.name			= "repaper",
-	.desc			= "Pervasive Displays RePaper e-ink panels",
-	.date			= "20170405",
-	.major			= 1,
-	.minor			= 0,
-};
-
-static const struct of_device_id repaper_of_match[] = {
-	{ .compatible = "pervasive,e1144cs021", .data = (void *)E1144CS021 },
-	{ .compatible = "pervasive,e1190cs021", .data = (void *)E1190CS021 },
-	{ .compatible = "pervasive,e2200cs021", .data = (void *)E2200CS021 },
-	{ .compatible = "pervasive,e2271cs021", .data = (void *)E2271CS021 },
-	{},
-};
-MODULE_DEVICE_TABLE(of, repaper_of_match);
-
-static const struct spi_device_id repaper_id[] = {
-	{ "e1144cs021", E1144CS021 },
-	{ "e1190cs021", E1190CS021 },
-	{ "e2200cs021", E2200CS021 },
-	{ "e2271cs021", E2271CS021 },
-	{ },
-};
-MODULE_DEVICE_TABLE(spi, repaper_id);
-
-static int repaper_probe(struct spi_device *spi)
-{
-	const struct drm_display_mode *mode;
-	const struct spi_device_id *spi_id;
-	const struct of_device_id *match;
-	struct device *dev = &spi->dev;
-	enum repaper_model model;
-	const char *thermal_zone;
-	struct repaper_epd *epd;
-	size_t line_buffer_size;
-	struct drm_device *drm;
-	int ret;
-
-	match = of_match_device(repaper_of_match, dev);
-	if (match) {
-		model = (enum repaper_model)match->data;
-	} else {
-		spi_id = spi_get_device_id(spi);
-		model = spi_id->driver_data;
-	}
-
-	/* The SPI device is used to allocate dma memory */
-	if (!dev->coherent_dma_mask) {
-		ret = dma_coerce_mask_and_coherent(dev, DMA_BIT_MASK(32));
-		if (ret) {
-			dev_warn(dev, "Failed to set dma mask %d\n", ret);
-			return ret;
-		}
-	}
-
-	epd = kzalloc(sizeof(*epd), GFP_KERNEL);
-	if (!epd)
-		return -ENOMEM;
-
-	drm = &epd->drm;
-
-	ret = devm_drm_dev_init(dev, drm, &repaper_driver);
-	if (ret) {
-		kfree(epd);
-		return ret;
-	}
-
-	drm_mode_config_init(drm);
-	drm->mode_config.funcs = &repaper_mode_config_funcs;
-
-	epd->spi = spi;
-
-	epd->panel_on = devm_gpiod_get(dev, "panel-on", GPIOD_OUT_LOW);
-	if (IS_ERR(epd->panel_on)) {
-		ret = PTR_ERR(epd->panel_on);
-		if (ret != -EPROBE_DEFER)
-			DRM_DEV_ERROR(dev, "Failed to get gpio 'panel-on'\n");
-		return ret;
-	}
-
-	epd->discharge = devm_gpiod_get(dev, "discharge", GPIOD_OUT_LOW);
-	if (IS_ERR(epd->discharge)) {
-		ret = PTR_ERR(epd->discharge);
-		if (ret != -EPROBE_DEFER)
-			DRM_DEV_ERROR(dev, "Failed to get gpio 'discharge'\n");
-		return ret;
-	}
-
-	epd->reset = devm_gpiod_get(dev, "reset", GPIOD_OUT_LOW);
-	if (IS_ERR(epd->reset)) {
-		ret = PTR_ERR(epd->reset);
-		if (ret != -EPROBE_DEFER)
-			DRM_DEV_ERROR(dev, "Failed to get gpio 'reset'\n");
-		return ret;
-	}
-
-	epd->busy = devm_gpiod_get(dev, "busy", GPIOD_IN);
-	if (IS_ERR(epd->busy)) {
-		ret = PTR_ERR(epd->busy);
-		if (ret != -EPROBE_DEFER)
-			DRM_DEV_ERROR(dev, "Failed to get gpio 'busy'\n");
-		return ret;
-	}
-
-	if (!device_property_read_string(dev, "pervasive,thermal-zone",
-					 &thermal_zone)) {
-		epd->thermal = thermal_zone_get_zone_by_name(thermal_zone);
-		if (IS_ERR(epd->thermal)) {
-			DRM_DEV_ERROR(dev, "Failed to get thermal zone: %s\n", thermal_zone);
-			return PTR_ERR(epd->thermal);
-		}
-	}
-
-	switch (model) {
-	case E1144CS021:
-		mode = &repaper_e1144cs021_mode;
-		epd->channel_select = repaper_e1144cs021_cs;
-		epd->stage_time = 480;
-		epd->bytes_per_scan = 96 / 4;
-		epd->middle_scan = true; /* data-scan-data */
-		epd->pre_border_byte = false;
-		epd->border_byte = REPAPER_BORDER_BYTE_ZERO;
-		break;
-
-	case E1190CS021:
-		mode = &repaper_e1190cs021_mode;
-		epd->channel_select = repaper_e1190cs021_cs;
-		epd->stage_time = 480;
-		epd->bytes_per_scan = 128 / 4 / 2;
-		epd->middle_scan = false; /* scan-data-scan */
-		epd->pre_border_byte = false;
-		epd->border_byte = REPAPER_BORDER_BYTE_SET;
-		break;
-
-	case E2200CS021:
-		mode = &repaper_e2200cs021_mode;
-		epd->channel_select = repaper_e2200cs021_cs;
-		epd->stage_time = 480;
-		epd->bytes_per_scan = 96 / 4;
-		epd->middle_scan = true; /* data-scan-data */
-		epd->pre_border_byte = true;
-		epd->border_byte = REPAPER_BORDER_BYTE_NONE;
-		break;
-
-	case E2271CS021:
-		epd->border = devm_gpiod_get(dev, "border", GPIOD_OUT_LOW);
-		if (IS_ERR(epd->border)) {
-			ret = PTR_ERR(epd->border);
-			if (ret != -EPROBE_DEFER)
-				DRM_DEV_ERROR(dev, "Failed to get gpio 'border'\n");
-			return ret;
-		}
-
-		mode = &repaper_e2271cs021_mode;
-		epd->channel_select = repaper_e2271cs021_cs;
-		epd->stage_time = 630;
-		epd->bytes_per_scan = 176 / 4;
-		epd->middle_scan = true; /* data-scan-data */
-		epd->pre_border_byte = true;
-		epd->border_byte = REPAPER_BORDER_BYTE_NONE;
-		break;
-
-	default:
-		return -ENODEV;
-	}
-
-	epd->mode = mode;
-	epd->width = mode->hdisplay;
-	epd->height = mode->vdisplay;
-	epd->factored_stage_time = epd->stage_time;
-
-	line_buffer_size = 2 * epd->width / 8 + epd->bytes_per_scan + 2;
-	epd->line_buffer = devm_kzalloc(dev, line_buffer_size, GFP_KERNEL);
-	if (!epd->line_buffer)
-		return -ENOMEM;
-
-	epd->current_frame = devm_kzalloc(dev, epd->width * epd->height / 8,
-					  GFP_KERNEL);
-	if (!epd->current_frame)
-		return -ENOMEM;
-
-	drm->mode_config.min_width = mode->hdisplay;
-	drm->mode_config.max_width = mode->hdisplay;
-	drm->mode_config.min_height = mode->vdisplay;
-	drm->mode_config.max_height = mode->vdisplay;
-
-	drm_connector_helper_add(&epd->connector, &repaper_connector_hfuncs);
-	ret = drm_connector_init(drm, &epd->connector, &repaper_connector_funcs,
-				 DRM_MODE_CONNECTOR_SPI);
-	if (ret)
-		return ret;
-
-	ret = drm_simple_display_pipe_init(drm, &epd->pipe, &repaper_pipe_funcs,
-					   repaper_formats, ARRAY_SIZE(repaper_formats),
-					   NULL, &epd->connector);
-	if (ret)
-		return ret;
-
-	drm_mode_config_reset(drm);
-
-	ret = drm_dev_register(drm, 0);
-	if (ret)
-		return ret;
-
-	spi_set_drvdata(spi, drm);
-
-	DRM_DEBUG_DRIVER("SPI speed: %uMHz\n", spi->max_speed_hz / 1000000);
-
-	drm_fbdev_generic_setup(drm, 0);
-
-	return 0;
-}
-
-static int repaper_remove(struct spi_device *spi)
-{
-	struct drm_device *drm = spi_get_drvdata(spi);
-
-	drm_dev_unplug(drm);
-	drm_atomic_helper_shutdown(drm);
-
-	return 0;
-}
-
-static void repaper_shutdown(struct spi_device *spi)
-{
-	drm_atomic_helper_shutdown(spi_get_drvdata(spi));
-}
-
-static struct spi_driver repaper_spi_driver = {
-	.driver = {
-		.name = "repaper",
-		.owner = THIS_MODULE,
-		.of_match_table = repaper_of_match,
-	},
-	.id_table = repaper_id,
-	.probe = repaper_probe,
-	.remove = repaper_remove,
-	.shutdown = repaper_shutdown,
-};
-module_spi_driver(repaper_spi_driver);
-
-MODULE_DESCRIPTION("Pervasive Displays RePaper DRM driver");
-MODULE_AUTHOR("Noralf Trønnes");
-MODULE_LICENSE("GPL");
diff --git a/drivers/gpu/drm/tinydrm/st7586.c b/drivers/gpu/drm/tinydrm/st7586.c
deleted file mode 100644
index 3cc21a1b30c8..000000000000
--- a/drivers/gpu/drm/tinydrm/st7586.c
+++ /dev/null
@@ -1,424 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0-or-later
-/*
- * DRM driver for Sitronix ST7586 panels
- *
- * Copyright 2017 David Lechner <david@lechnology.com>
- */
-
-#include <linux/delay.h>
-#include <linux/dma-buf.h>
-#include <linux/gpio/consumer.h>
-#include <linux/module.h>
-#include <linux/property.h>
-#include <linux/spi/spi.h>
-#include <video/mipi_display.h>
-
-#include <drm/drm_atomic_helper.h>
-#include <drm/drm_damage_helper.h>
-#include <drm/drm_drv.h>
-#include <drm/drm_fb_cma_helper.h>
-#include <drm/drm_fb_helper.h>
-#include <drm/drm_format_helper.h>
-#include <drm/drm_gem_cma_helper.h>
-#include <drm/drm_gem_framebuffer_helper.h>
-#include <drm/drm_mipi_dbi.h>
-#include <drm/drm_rect.h>
-#include <drm/drm_vblank.h>
-
-/* controller-specific commands */
-#define ST7586_DISP_MODE_GRAY	0x38
-#define ST7586_DISP_MODE_MONO	0x39
-#define ST7586_ENABLE_DDRAM	0x3a
-#define ST7586_SET_DISP_DUTY	0xb0
-#define ST7586_SET_PART_DISP	0xb4
-#define ST7586_SET_NLINE_INV	0xb5
-#define ST7586_SET_VOP		0xc0
-#define ST7586_SET_BIAS_SYSTEM	0xc3
-#define ST7586_SET_BOOST_LEVEL	0xc4
-#define ST7586_SET_VOP_OFFSET	0xc7
-#define ST7586_ENABLE_ANALOG	0xd0
-#define ST7586_AUTO_READ_CTRL	0xd7
-#define ST7586_OTP_RW_CTRL	0xe0
-#define ST7586_OTP_CTRL_OUT	0xe1
-#define ST7586_OTP_READ		0xe3
-
-#define ST7586_DISP_CTRL_MX	BIT(6)
-#define ST7586_DISP_CTRL_MY	BIT(7)
-
-/*
- * The ST7586 controller has an unusual pixel format where 2bpp grayscale is
- * packed 3 pixels per byte with the first two pixels using 3 bits and the 3rd
- * pixel using only 2 bits.
- *
- * |  D7  |  D6  |  D5  ||      |      || 2bpp |
- * | (D4) | (D3) | (D2) ||  D1  |  D0  || GRAY |
- * +------+------+------++------+------++------+
- * |  1   |  1   |  1   ||  1   |  1   || 0  0 | black
- * |  1   |  0   |  0   ||  1   |  0   || 0  1 | dark gray
- * |  0   |  1   |  0   ||  0   |  1   || 1  0 | light gray
- * |  0   |  0   |  0   ||  0   |  0   || 1  1 | white
- */
-
-static const u8 st7586_lookup[] = { 0x7, 0x4, 0x2, 0x0 };
-
-static void st7586_xrgb8888_to_gray332(u8 *dst, void *vaddr,
-				       struct drm_framebuffer *fb,
-				       struct drm_rect *clip)
-{
-	size_t len = (clip->x2 - clip->x1) * (clip->y2 - clip->y1);
-	unsigned int x, y;
-	u8 *src, *buf, val;
-
-	buf = kmalloc(len, GFP_KERNEL);
-	if (!buf)
-		return;
-
-	drm_fb_xrgb8888_to_gray8(buf, vaddr, fb, clip);
-	src = buf;
-
-	for (y = clip->y1; y < clip->y2; y++) {
-		for (x = clip->x1; x < clip->x2; x += 3) {
-			val = st7586_lookup[*src++ >> 6] << 5;
-			val |= st7586_lookup[*src++ >> 6] << 2;
-			val |= st7586_lookup[*src++ >> 6] >> 1;
-			*dst++ = val;
-		}
-	}
-
-	kfree(buf);
-}
-
-static int st7586_buf_copy(void *dst, struct drm_framebuffer *fb,
-			   struct drm_rect *clip)
-{
-	struct drm_gem_cma_object *cma_obj = drm_fb_cma_get_gem_obj(fb, 0);
-	struct dma_buf_attachment *import_attach = cma_obj->base.import_attach;
-	void *src = cma_obj->vaddr;
-	int ret = 0;
-
-	if (import_attach) {
-		ret = dma_buf_begin_cpu_access(import_attach->dmabuf,
-					       DMA_FROM_DEVICE);
-		if (ret)
-			return ret;
-	}
-
-	st7586_xrgb8888_to_gray332(dst, src, fb, clip);
-
-	if (import_attach)
-		ret = dma_buf_end_cpu_access(import_attach->dmabuf,
-					     DMA_FROM_DEVICE);
-
-	return ret;
-}
-
-static void st7586_fb_dirty(struct drm_framebuffer *fb, struct drm_rect *rect)
-{
-	struct mipi_dbi_dev *dbidev = drm_to_mipi_dbi_dev(fb->dev);
-	struct mipi_dbi *dbi = &dbidev->dbi;
-	int start, end, idx, ret = 0;
-
-	if (!dbidev->enabled)
-		return;
-
-	if (!drm_dev_enter(fb->dev, &idx))
-		return;
-
-	/* 3 pixels per byte, so grow clip to nearest multiple of 3 */
-	rect->x1 = rounddown(rect->x1, 3);
-	rect->x2 = roundup(rect->x2, 3);
-
-	DRM_DEBUG_KMS("Flushing [FB:%d] " DRM_RECT_FMT "\n", fb->base.id, DRM_RECT_ARG(rect));
-
-	ret = st7586_buf_copy(dbidev->tx_buf, fb, rect);
-	if (ret)
-		goto err_msg;
-
-	/* Pixels are packed 3 per byte */
-	start = rect->x1 / 3;
-	end = rect->x2 / 3;
-
-	mipi_dbi_command(dbi, MIPI_DCS_SET_COLUMN_ADDRESS,
-			 (start >> 8) & 0xFF, start & 0xFF,
-			 (end >> 8) & 0xFF, (end - 1) & 0xFF);
-	mipi_dbi_command(dbi, MIPI_DCS_SET_PAGE_ADDRESS,
-			 (rect->y1 >> 8) & 0xFF, rect->y1 & 0xFF,
-			 (rect->y2 >> 8) & 0xFF, (rect->y2 - 1) & 0xFF);
-
-	ret = mipi_dbi_command_buf(dbi, MIPI_DCS_WRITE_MEMORY_START,
-				   (u8 *)dbidev->tx_buf,
-				   (end - start) * (rect->y2 - rect->y1));
-err_msg:
-	if (ret)
-		dev_err_once(fb->dev->dev, "Failed to update display %d\n", ret);
-
-	drm_dev_exit(idx);
-}
-
-static void st7586_pipe_update(struct drm_simple_display_pipe *pipe,
-			       struct drm_plane_state *old_state)
-{
-	struct drm_plane_state *state = pipe->plane.state;
-	struct drm_crtc *crtc = &pipe->crtc;
-	struct drm_rect rect;
-
-	if (drm_atomic_helper_damage_merged(old_state, state, &rect))
-		st7586_fb_dirty(state->fb, &rect);
-
-	if (crtc->state->event) {
-		spin_lock_irq(&crtc->dev->event_lock);
-		drm_crtc_send_vblank_event(crtc, crtc->state->event);
-		spin_unlock_irq(&crtc->dev->event_lock);
-		crtc->state->event = NULL;
-	}
-}
-
-static void st7586_pipe_enable(struct drm_simple_display_pipe *pipe,
-			       struct drm_crtc_state *crtc_state,
-			       struct drm_plane_state *plane_state)
-{
-	struct mipi_dbi_dev *dbidev = drm_to_mipi_dbi_dev(pipe->crtc.dev);
-	struct drm_framebuffer *fb = plane_state->fb;
-	struct mipi_dbi *dbi = &dbidev->dbi;
-	struct drm_rect rect = {
-		.x1 = 0,
-		.x2 = fb->width,
-		.y1 = 0,
-		.y2 = fb->height,
-	};
-	int idx, ret;
-	u8 addr_mode;
-
-	if (!drm_dev_enter(pipe->crtc.dev, &idx))
-		return;
-
-	DRM_DEBUG_KMS("\n");
-
-	ret = mipi_dbi_poweron_reset(dbidev);
-	if (ret)
-		goto out_exit;
-
-	mipi_dbi_command(dbi, ST7586_AUTO_READ_CTRL, 0x9f);
-	mipi_dbi_command(dbi, ST7586_OTP_RW_CTRL, 0x00);
-
-	msleep(10);
-
-	mipi_dbi_command(dbi, ST7586_OTP_READ);
-
-	msleep(20);
-
-	mipi_dbi_command(dbi, ST7586_OTP_CTRL_OUT);
-	mipi_dbi_command(dbi, MIPI_DCS_EXIT_SLEEP_MODE);
-	mipi_dbi_command(dbi, MIPI_DCS_SET_DISPLAY_OFF);
-
-	msleep(50);
-
-	mipi_dbi_command(dbi, ST7586_SET_VOP_OFFSET, 0x00);
-	mipi_dbi_command(dbi, ST7586_SET_VOP, 0xe3, 0x00);
-	mipi_dbi_command(dbi, ST7586_SET_BIAS_SYSTEM, 0x02);
-	mipi_dbi_command(dbi, ST7586_SET_BOOST_LEVEL, 0x04);
-	mipi_dbi_command(dbi, ST7586_ENABLE_ANALOG, 0x1d);
-	mipi_dbi_command(dbi, ST7586_SET_NLINE_INV, 0x00);
-	mipi_dbi_command(dbi, ST7586_DISP_MODE_GRAY);
-	mipi_dbi_command(dbi, ST7586_ENABLE_DDRAM, 0x02);
-
-	switch (dbidev->rotation) {
-	default:
-		addr_mode = 0x00;
-		break;
-	case 90:
-		addr_mode = ST7586_DISP_CTRL_MY;
-		break;
-	case 180:
-		addr_mode = ST7586_DISP_CTRL_MX | ST7586_DISP_CTRL_MY;
-		break;
-	case 270:
-		addr_mode = ST7586_DISP_CTRL_MX;
-		break;
-	}
-	mipi_dbi_command(dbi, MIPI_DCS_SET_ADDRESS_MODE, addr_mode);
-
-	mipi_dbi_command(dbi, ST7586_SET_DISP_DUTY, 0x7f);
-	mipi_dbi_command(dbi, ST7586_SET_PART_DISP, 0xa0);
-	mipi_dbi_command(dbi, MIPI_DCS_SET_PARTIAL_AREA, 0x00, 0x00, 0x00, 0x77);
-	mipi_dbi_command(dbi, MIPI_DCS_EXIT_INVERT_MODE);
-
-	msleep(100);
-
-	dbidev->enabled = true;
-	st7586_fb_dirty(fb, &rect);
-
-	mipi_dbi_command(dbi, MIPI_DCS_SET_DISPLAY_ON);
-out_exit:
-	drm_dev_exit(idx);
-}
-
-static void st7586_pipe_disable(struct drm_simple_display_pipe *pipe)
-{
-	struct mipi_dbi_dev *dbidev = drm_to_mipi_dbi_dev(pipe->crtc.dev);
-
-	/*
-	 * This callback is not protected by drm_dev_enter/exit since we want to
-	 * turn off the display on regular driver unload. It's highly unlikely
-	 * that the underlying SPI controller is gone should this be called after
-	 * unplug.
-	 */
-
-	DRM_DEBUG_KMS("\n");
-
-	if (!dbidev->enabled)
-		return;
-
-	mipi_dbi_command(&dbidev->dbi, MIPI_DCS_SET_DISPLAY_OFF);
-	dbidev->enabled = false;
-}
-
-static const u32 st7586_formats[] = {
-	DRM_FORMAT_XRGB8888,
-};
-
-static const struct drm_simple_display_pipe_funcs st7586_pipe_funcs = {
-	.enable		= st7586_pipe_enable,
-	.disable	= st7586_pipe_disable,
-	.update		= st7586_pipe_update,
-	.prepare_fb	= drm_gem_fb_simple_display_pipe_prepare_fb,
-};
-
-static const struct drm_display_mode st7586_mode = {
-	DRM_SIMPLE_MODE(178, 128, 37, 27),
-};
-
-DEFINE_DRM_GEM_CMA_FOPS(st7586_fops);
-
-static struct drm_driver st7586_driver = {
-	.driver_features	= DRIVER_GEM | DRIVER_MODESET | DRIVER_ATOMIC,
-	.fops			= &st7586_fops,
-	.release		= mipi_dbi_release,
-	DRM_GEM_CMA_VMAP_DRIVER_OPS,
-	.debugfs_init		= mipi_dbi_debugfs_init,
-	.name			= "st7586",
-	.desc			= "Sitronix ST7586",
-	.date			= "20170801",
-	.major			= 1,
-	.minor			= 0,
-};
-
-static const struct of_device_id st7586_of_match[] = {
-	{ .compatible = "lego,ev3-lcd" },
-	{},
-};
-MODULE_DEVICE_TABLE(of, st7586_of_match);
-
-static const struct spi_device_id st7586_id[] = {
-	{ "ev3-lcd", 0 },
-	{ },
-};
-MODULE_DEVICE_TABLE(spi, st7586_id);
-
-static int st7586_probe(struct spi_device *spi)
-{
-	struct device *dev = &spi->dev;
-	struct mipi_dbi_dev *dbidev;
-	struct drm_device *drm;
-	struct mipi_dbi *dbi;
-	struct gpio_desc *a0;
-	u32 rotation = 0;
-	size_t bufsize;
-	int ret;
-
-	dbidev = kzalloc(sizeof(*dbidev), GFP_KERNEL);
-	if (!dbidev)
-		return -ENOMEM;
-
-	dbi = &dbidev->dbi;
-	drm = &dbidev->drm;
-	ret = devm_drm_dev_init(dev, drm, &st7586_driver);
-	if (ret) {
-		kfree(dbidev);
-		return ret;
-	}
-
-	drm_mode_config_init(drm);
-
-	bufsize = (st7586_mode.vdisplay + 2) / 3 * st7586_mode.hdisplay;
-
-	dbi->reset = devm_gpiod_get(dev, "reset", GPIOD_OUT_HIGH);
-	if (IS_ERR(dbi->reset)) {
-		DRM_DEV_ERROR(dev, "Failed to get gpio 'reset'\n");
-		return PTR_ERR(dbi->reset);
-	}
-
-	a0 = devm_gpiod_get(dev, "a0", GPIOD_OUT_LOW);
-	if (IS_ERR(a0)) {
-		DRM_DEV_ERROR(dev, "Failed to get gpio 'a0'\n");
-		return PTR_ERR(a0);
-	}
-
-	device_property_read_u32(dev, "rotation", &rotation);
-
-	ret = mipi_dbi_spi_init(spi, dbi, a0);
-	if (ret)
-		return ret;
-
-	/* Cannot read from this controller via SPI */
-	dbi->read_commands = NULL;
-
-	ret = mipi_dbi_dev_init_with_formats(dbidev, &st7586_pipe_funcs,
-					     st7586_formats, ARRAY_SIZE(st7586_formats),
-					     &st7586_mode, rotation, bufsize);
-	if (ret)
-		return ret;
-
-	/*
-	 * we are using 8-bit data, so we are not actually swapping anything,
-	 * but setting mipi->swap_bytes makes mipi_dbi_typec3_command() do the
-	 * right thing and not use 16-bit transfers (which results in swapped
-	 * bytes on little-endian systems and causes out of order data to be
-	 * sent to the display).
-	 */
-	dbi->swap_bytes = true;
-
-	drm_mode_config_reset(drm);
-
-	ret = drm_dev_register(drm, 0);
-	if (ret)
-		return ret;
-
-	spi_set_drvdata(spi, drm);
-
-	drm_fbdev_generic_setup(drm, 0);
-
-	return 0;
-}
-
-static int st7586_remove(struct spi_device *spi)
-{
-	struct drm_device *drm = spi_get_drvdata(spi);
-
-	drm_dev_unplug(drm);
-	drm_atomic_helper_shutdown(drm);
-
-	return 0;
-}
-
-static void st7586_shutdown(struct spi_device *spi)
-{
-	drm_atomic_helper_shutdown(spi_get_drvdata(spi));
-}
-
-static struct spi_driver st7586_spi_driver = {
-	.driver = {
-		.name = "st7586",
-		.owner = THIS_MODULE,
-		.of_match_table = st7586_of_match,
-	},
-	.id_table = st7586_id,
-	.probe = st7586_probe,
-	.remove = st7586_remove,
-	.shutdown = st7586_shutdown,
-};
-module_spi_driver(st7586_spi_driver);
-
-MODULE_DESCRIPTION("Sitronix ST7586 DRM driver");
-MODULE_AUTHOR("David Lechner <david@lechnology.com>");
-MODULE_LICENSE("GPL");
diff --git a/drivers/gpu/drm/tinydrm/st7735r.c b/drivers/gpu/drm/tinydrm/st7735r.c
deleted file mode 100644
index 3f4487c71684..000000000000
--- a/drivers/gpu/drm/tinydrm/st7735r.c
+++ /dev/null
@@ -1,246 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0+
-/*
- * DRM driver for Sitronix ST7735R panels
- *
- * Copyright 2017 David Lechner <david@lechnology.com>
- */
-
-#include <linux/backlight.h>
-#include <linux/delay.h>
-#include <linux/dma-buf.h>
-#include <linux/gpio/consumer.h>
-#include <linux/module.h>
-#include <linux/property.h>
-#include <linux/spi/spi.h>
-#include <video/mipi_display.h>
-
-#include <drm/drm_atomic_helper.h>
-#include <drm/drm_drv.h>
-#include <drm/drm_fb_helper.h>
-#include <drm/drm_gem_cma_helper.h>
-#include <drm/drm_gem_framebuffer_helper.h>
-#include <drm/drm_mipi_dbi.h>
-
-#define ST7735R_FRMCTR1		0xb1
-#define ST7735R_FRMCTR2		0xb2
-#define ST7735R_FRMCTR3		0xb3
-#define ST7735R_INVCTR		0xb4
-#define ST7735R_PWCTR1		0xc0
-#define ST7735R_PWCTR2		0xc1
-#define ST7735R_PWCTR3		0xc2
-#define ST7735R_PWCTR4		0xc3
-#define ST7735R_PWCTR5		0xc4
-#define ST7735R_VMCTR1		0xc5
-#define ST7735R_GAMCTRP1	0xe0
-#define ST7735R_GAMCTRN1	0xe1
-
-#define ST7735R_MY	BIT(7)
-#define ST7735R_MX	BIT(6)
-#define ST7735R_MV	BIT(5)
-
-static void jd_t18003_t01_pipe_enable(struct drm_simple_display_pipe *pipe,
-				      struct drm_crtc_state *crtc_state,
-				      struct drm_plane_state *plane_state)
-{
-	struct mipi_dbi_dev *dbidev = drm_to_mipi_dbi_dev(pipe->crtc.dev);
-	struct mipi_dbi *dbi = &dbidev->dbi;
-	int ret, idx;
-	u8 addr_mode;
-
-	if (!drm_dev_enter(pipe->crtc.dev, &idx))
-		return;
-
-	DRM_DEBUG_KMS("\n");
-
-	ret = mipi_dbi_poweron_reset(dbidev);
-	if (ret)
-		goto out_exit;
-
-	msleep(150);
-
-	mipi_dbi_command(dbi, MIPI_DCS_EXIT_SLEEP_MODE);
-	msleep(500);
-
-	mipi_dbi_command(dbi, ST7735R_FRMCTR1, 0x01, 0x2c, 0x2d);
-	mipi_dbi_command(dbi, ST7735R_FRMCTR2, 0x01, 0x2c, 0x2d);
-	mipi_dbi_command(dbi, ST7735R_FRMCTR3, 0x01, 0x2c, 0x2d, 0x01, 0x2c,
-			 0x2d);
-	mipi_dbi_command(dbi, ST7735R_INVCTR, 0x07);
-	mipi_dbi_command(dbi, ST7735R_PWCTR1, 0xa2, 0x02, 0x84);
-	mipi_dbi_command(dbi, ST7735R_PWCTR2, 0xc5);
-	mipi_dbi_command(dbi, ST7735R_PWCTR3, 0x0a, 0x00);
-	mipi_dbi_command(dbi, ST7735R_PWCTR4, 0x8a, 0x2a);
-	mipi_dbi_command(dbi, ST7735R_PWCTR5, 0x8a, 0xee);
-	mipi_dbi_command(dbi, ST7735R_VMCTR1, 0x0e);
-	mipi_dbi_command(dbi, MIPI_DCS_EXIT_INVERT_MODE);
-	switch (dbidev->rotation) {
-	default:
-		addr_mode = ST7735R_MX | ST7735R_MY;
-		break;
-	case 90:
-		addr_mode = ST7735R_MX | ST7735R_MV;
-		break;
-	case 180:
-		addr_mode = 0;
-		break;
-	case 270:
-		addr_mode = ST7735R_MY | ST7735R_MV;
-		break;
-	}
-	mipi_dbi_command(dbi, MIPI_DCS_SET_ADDRESS_MODE, addr_mode);
-	mipi_dbi_command(dbi, MIPI_DCS_SET_PIXEL_FORMAT,
-			 MIPI_DCS_PIXEL_FMT_16BIT);
-	mipi_dbi_command(dbi, ST7735R_GAMCTRP1, 0x02, 0x1c, 0x07, 0x12, 0x37,
-			 0x32, 0x29, 0x2d, 0x29, 0x25, 0x2b, 0x39, 0x00, 0x01,
-			 0x03, 0x10);
-	mipi_dbi_command(dbi, ST7735R_GAMCTRN1, 0x03, 0x1d, 0x07, 0x06, 0x2e,
-			 0x2c, 0x29, 0x2d, 0x2e, 0x2e, 0x37, 0x3f, 0x00, 0x00,
-			 0x02, 0x10);
-	mipi_dbi_command(dbi, MIPI_DCS_SET_DISPLAY_ON);
-
-	msleep(100);
-
-	mipi_dbi_command(dbi, MIPI_DCS_ENTER_NORMAL_MODE);
-
-	msleep(20);
-
-	mipi_dbi_enable_flush(dbidev, crtc_state, plane_state);
-out_exit:
-	drm_dev_exit(idx);
-}
-
-static const struct drm_simple_display_pipe_funcs jd_t18003_t01_pipe_funcs = {
-	.enable		= jd_t18003_t01_pipe_enable,
-	.disable	= mipi_dbi_pipe_disable,
-	.update		= mipi_dbi_pipe_update,
-	.prepare_fb	= drm_gem_fb_simple_display_pipe_prepare_fb,
-};
-
-static const struct drm_display_mode jd_t18003_t01_mode = {
-	DRM_SIMPLE_MODE(128, 160, 28, 35),
-};
-
-DEFINE_DRM_GEM_CMA_FOPS(st7735r_fops);
-
-static struct drm_driver st7735r_driver = {
-	.driver_features	= DRIVER_GEM | DRIVER_MODESET | DRIVER_ATOMIC,
-	.fops			= &st7735r_fops,
-	.release		= mipi_dbi_release,
-	DRM_GEM_CMA_VMAP_DRIVER_OPS,
-	.debugfs_init		= mipi_dbi_debugfs_init,
-	.name			= "st7735r",
-	.desc			= "Sitronix ST7735R",
-	.date			= "20171128",
-	.major			= 1,
-	.minor			= 0,
-};
-
-static const struct of_device_id st7735r_of_match[] = {
-	{ .compatible = "jianda,jd-t18003-t01" },
-	{ },
-};
-MODULE_DEVICE_TABLE(of, st7735r_of_match);
-
-static const struct spi_device_id st7735r_id[] = {
-	{ "jd-t18003-t01", 0 },
-	{ },
-};
-MODULE_DEVICE_TABLE(spi, st7735r_id);
-
-static int st7735r_probe(struct spi_device *spi)
-{
-	struct device *dev = &spi->dev;
-	struct mipi_dbi_dev *dbidev;
-	struct drm_device *drm;
-	struct mipi_dbi *dbi;
-	struct gpio_desc *dc;
-	u32 rotation = 0;
-	int ret;
-
-	dbidev = kzalloc(sizeof(*dbidev), GFP_KERNEL);
-	if (!dbidev)
-		return -ENOMEM;
-
-	dbi = &dbidev->dbi;
-	drm = &dbidev->drm;
-	ret = devm_drm_dev_init(dev, drm, &st7735r_driver);
-	if (ret) {
-		kfree(dbidev);
-		return ret;
-	}
-
-	drm_mode_config_init(drm);
-
-	dbi->reset = devm_gpiod_get(dev, "reset", GPIOD_OUT_HIGH);
-	if (IS_ERR(dbi->reset)) {
-		DRM_DEV_ERROR(dev, "Failed to get gpio 'reset'\n");
-		return PTR_ERR(dbi->reset);
-	}
-
-	dc = devm_gpiod_get(dev, "dc", GPIOD_OUT_LOW);
-	if (IS_ERR(dc)) {
-		DRM_DEV_ERROR(dev, "Failed to get gpio 'dc'\n");
-		return PTR_ERR(dc);
-	}
-
-	dbidev->backlight = devm_of_find_backlight(dev);
-	if (IS_ERR(dbidev->backlight))
-		return PTR_ERR(dbidev->backlight);
-
-	device_property_read_u32(dev, "rotation", &rotation);
-
-	ret = mipi_dbi_spi_init(spi, dbi, dc);
-	if (ret)
-		return ret;
-
-	/* Cannot read from Adafruit 1.8" display via SPI */
-	dbi->read_commands = NULL;
-
-	ret = mipi_dbi_dev_init(dbidev, &jd_t18003_t01_pipe_funcs, &jd_t18003_t01_mode, rotation);
-	if (ret)
-		return ret;
-
-	drm_mode_config_reset(drm);
-
-	ret = drm_dev_register(drm, 0);
-	if (ret)
-		return ret;
-
-	spi_set_drvdata(spi, drm);
-
-	drm_fbdev_generic_setup(drm, 0);
-
-	return 0;
-}
-
-static int st7735r_remove(struct spi_device *spi)
-{
-	struct drm_device *drm = spi_get_drvdata(spi);
-
-	drm_dev_unplug(drm);
-	drm_atomic_helper_shutdown(drm);
-
-	return 0;
-}
-
-static void st7735r_shutdown(struct spi_device *spi)
-{
-	drm_atomic_helper_shutdown(spi_get_drvdata(spi));
-}
-
-static struct spi_driver st7735r_spi_driver = {
-	.driver = {
-		.name = "st7735r",
-		.owner = THIS_MODULE,
-		.of_match_table = st7735r_of_match,
-	},
-	.id_table = st7735r_id,
-	.probe = st7735r_probe,
-	.remove = st7735r_remove,
-	.shutdown = st7735r_shutdown,
-};
-module_spi_driver(st7735r_spi_driver);
-
-MODULE_DESCRIPTION("Sitronix ST7735R DRM driver");
-MODULE_AUTHOR("David Lechner <david@lechnology.com>");
-MODULE_LICENSE("GPL");
-- 
cgit v1.2.3


From 77b8cabf3d529725e59b71671a562556f6c84446 Mon Sep 17 00:00:00 2001
From: Noralf Trønnes <noralf@tronnes.org>
Date: Thu, 25 Jul 2019 12:51:32 +0200
Subject: drm/gm12u320: Move driver to drm/tiny
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

Move the driver to the new haven for tiny DRM drivers.

Cc: Hans de Goede <hdegoede@redhat.com>
Suggested-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Noralf Trønnes <noralf@tronnes.org>
Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Acked-by: Sam Ravnborg <sam@ravnborg.org>
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190725105132.22545-4-noralf@tronnes.org
---
 MAINTAINERS                         |   2 +-
 drivers/gpu/drm/Kconfig             |   2 -
 drivers/gpu/drm/Makefile            |   1 -
 drivers/gpu/drm/gm12u320/Kconfig    |   9 -
 drivers/gpu/drm/gm12u320/Makefile   |   2 -
 drivers/gpu/drm/gm12u320/gm12u320.c | 814 ------------------------------------
 drivers/gpu/drm/tiny/Kconfig        |  10 +
 drivers/gpu/drm/tiny/Makefile       |   1 +
 drivers/gpu/drm/tiny/gm12u320.c     | 814 ++++++++++++++++++++++++++++++++++++
 9 files changed, 826 insertions(+), 829 deletions(-)
 delete mode 100644 drivers/gpu/drm/gm12u320/Kconfig
 delete mode 100644 drivers/gpu/drm/gm12u320/Makefile
 delete mode 100644 drivers/gpu/drm/gm12u320/gm12u320.c
 create mode 100644 drivers/gpu/drm/tiny/gm12u320.c

(limited to 'MAINTAINERS')

diff --git a/MAINTAINERS b/MAINTAINERS
index 00c7cbc92711..6fe3462a1f7a 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -5099,7 +5099,7 @@ DRM DRIVER FOR GRAIN MEDIA GM12U320 PROJECTORS
 M:	Hans de Goede <hdegoede@redhat.com>
 T:	git git://anongit.freedesktop.org/drm/drm-misc
 S:	Maintained
-F:	drivers/gpu/drm/gm12u320/
+F:	drivers/gpu/drm/tiny/gm12u320.c
 
 DRM DRIVER FOR ILITEK ILI9225 PANELS
 M:	David Lechner <david@lechnology.com>
diff --git a/drivers/gpu/drm/Kconfig b/drivers/gpu/drm/Kconfig
index a5ae0d369e88..e6f40fb54c9a 100644
--- a/drivers/gpu/drm/Kconfig
+++ b/drivers/gpu/drm/Kconfig
@@ -358,8 +358,6 @@ source "drivers/gpu/drm/aspeed/Kconfig"
 
 source "drivers/gpu/drm/mcde/Kconfig"
 
-source "drivers/gpu/drm/gm12u320/Kconfig"
-
 # Keep legacy drivers last
 
 menuconfig DRM_LEGACY
diff --git a/drivers/gpu/drm/Makefile b/drivers/gpu/drm/Makefile
index 1d366c4bbd1f..10f8329a8b71 100644
--- a/drivers/gpu/drm/Makefile
+++ b/drivers/gpu/drm/Makefile
@@ -121,4 +121,3 @@ obj-$(CONFIG_DRM_LIMA)  += lima/
 obj-$(CONFIG_DRM_PANFROST) += panfrost/
 obj-$(CONFIG_DRM_ASPEED_GFX) += aspeed/
 obj-$(CONFIG_DRM_MCDE) += mcde/
-obj-$(CONFIG_DRM_GM12U320) += gm12u320/
diff --git a/drivers/gpu/drm/gm12u320/Kconfig b/drivers/gpu/drm/gm12u320/Kconfig
deleted file mode 100644
index 0882a61c04d5..000000000000
--- a/drivers/gpu/drm/gm12u320/Kconfig
+++ /dev/null
@@ -1,9 +0,0 @@
-# SPDX-License-Identifier: GPL-2.0+
-config DRM_GM12U320
-	tristate "GM12U320 driver for USB projectors"
-	depends on DRM && USB
-	select DRM_KMS_HELPER
-	select DRM_GEM_SHMEM_HELPER
-	help
-	 This is a KMS driver for projectors which use the GM12U320 chipset
-	 for video transfer over USB2/3, such as the Acer C120 mini projector.
diff --git a/drivers/gpu/drm/gm12u320/Makefile b/drivers/gpu/drm/gm12u320/Makefile
deleted file mode 100644
index ea514382f00d..000000000000
--- a/drivers/gpu/drm/gm12u320/Makefile
+++ /dev/null
@@ -1,2 +0,0 @@
-# SPDX-License-Identifier: GPL-2.0+
-obj-$(CONFIG_DRM_GM12U320) += gm12u320.o
diff --git a/drivers/gpu/drm/gm12u320/gm12u320.c b/drivers/gpu/drm/gm12u320/gm12u320.c
deleted file mode 100644
index b6f47b8cf240..000000000000
--- a/drivers/gpu/drm/gm12u320/gm12u320.c
+++ /dev/null
@@ -1,814 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0+
-/*
- * Copyright 2019 Hans de Goede <hdegoede@redhat.com>
- */
-
-#include <linux/dma-buf.h>
-#include <linux/module.h>
-#include <linux/usb.h>
-
-#include <drm/drm_atomic_helper.h>
-#include <drm/drm_atomic_state_helper.h>
-#include <drm/drm_connector.h>
-#include <drm/drm_damage_helper.h>
-#include <drm/drm_drv.h>
-#include <drm/drm_fb_helper.h>
-#include <drm/drm_file.h>
-#include <drm/drm_format_helper.h>
-#include <drm/drm_fourcc.h>
-#include <drm/drm_gem_shmem_helper.h>
-#include <drm/drm_gem_framebuffer_helper.h>
-#include <drm/drm_ioctl.h>
-#include <drm/drm_modeset_helper_vtables.h>
-#include <drm/drm_probe_helper.h>
-#include <drm/drm_simple_kms_helper.h>
-#include <drm/drm_vblank.h>
-
-static bool eco_mode;
-module_param(eco_mode, bool, 0644);
-MODULE_PARM_DESC(eco_mode, "Turn on Eco mode (less bright, more silent)");
-
-#define DRIVER_NAME		"gm12u320"
-#define DRIVER_DESC		"Grain Media GM12U320 USB projector display"
-#define DRIVER_DATE		"2019"
-#define DRIVER_MAJOR		1
-#define DRIVER_MINOR		0
-#define DRIVER_PATCHLEVEL	1
-
-/*
- * The DLP has an actual width of 854 pixels, but that is not a multiple
- * of 8, breaking things left and right, so we export a width of 848.
- */
-#define GM12U320_USER_WIDTH		848
-#define GM12U320_REAL_WIDTH		854
-#define GM12U320_HEIGHT			480
-
-#define GM12U320_BLOCK_COUNT		20
-
-#define MISC_RCV_EPT			1
-#define DATA_RCV_EPT			2
-#define DATA_SND_EPT			3
-#define MISC_SND_EPT			4
-
-#define DATA_BLOCK_HEADER_SIZE		84
-#define DATA_BLOCK_CONTENT_SIZE		64512
-#define DATA_BLOCK_FOOTER_SIZE		20
-#define DATA_BLOCK_SIZE			(DATA_BLOCK_HEADER_SIZE + \
-					 DATA_BLOCK_CONTENT_SIZE + \
-					 DATA_BLOCK_FOOTER_SIZE)
-#define DATA_LAST_BLOCK_CONTENT_SIZE	4032
-#define DATA_LAST_BLOCK_SIZE		(DATA_BLOCK_HEADER_SIZE + \
-					 DATA_LAST_BLOCK_CONTENT_SIZE + \
-					 DATA_BLOCK_FOOTER_SIZE)
-
-#define CMD_SIZE			31
-#define READ_STATUS_SIZE		13
-#define MISC_VALUE_SIZE			4
-
-#define CMD_TIMEOUT			msecs_to_jiffies(200)
-#define DATA_TIMEOUT			msecs_to_jiffies(1000)
-#define IDLE_TIMEOUT			msecs_to_jiffies(2000)
-#define FIRST_FRAME_TIMEOUT		msecs_to_jiffies(2000)
-
-#define MISC_REQ_GET_SET_ECO_A		0xff
-#define MISC_REQ_GET_SET_ECO_B		0x35
-/* Windows driver does once every second, with arg d = 1, other args 0 */
-#define MISC_REQ_UNKNOWN1_A		0xff
-#define MISC_REQ_UNKNOWN1_B		0x38
-/* Windows driver does this on init, with arg a, b = 0, c = 0xa0, d = 4 */
-#define MISC_REQ_UNKNOWN2_A		0xa5
-#define MISC_REQ_UNKNOWN2_B		0x00
-
-struct gm12u320_device {
-	struct drm_device	         dev;
-	struct drm_simple_display_pipe   pipe;
-	struct drm_connector	         conn;
-	struct usb_device               *udev;
-	unsigned char                   *cmd_buf;
-	unsigned char                   *data_buf[GM12U320_BLOCK_COUNT];
-	bool                             pipe_enabled;
-	struct {
-		bool                     run;
-		struct workqueue_struct *workq;
-		struct work_struct       work;
-		wait_queue_head_t        waitq;
-		struct mutex             lock;
-		struct drm_framebuffer  *fb;
-		struct drm_rect          rect;
-	} fb_update;
-};
-
-static const char cmd_data[CMD_SIZE] = {
-	0x55, 0x53, 0x42, 0x43, 0x00, 0x00, 0x00, 0x00,
-	0x68, 0xfc, 0x00, 0x00, 0x00, 0x00, 0x10, 0xff,
-	0x00, 0x00, 0x00, 0x00, 0xfc, 0x00, 0x80, 0x00,
-	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00
-};
-
-static const char cmd_draw[CMD_SIZE] = {
-	0x55, 0x53, 0x42, 0x43, 0x00, 0x00, 0x00, 0x00,
-	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x10, 0xfe,
-	0x00, 0x00, 0x00, 0xc0, 0xd1, 0x05, 0x00, 0x40,
-	0x00, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00
-};
-
-static const char cmd_misc[CMD_SIZE] = {
-	0x55, 0x53, 0x42, 0x43, 0x00, 0x00, 0x00, 0x00,
-	0x04, 0x00, 0x00, 0x00, 0x80, 0x01, 0x10, 0xfd,
-	0x00, 0x00, 0x00, 0xc0, 0x00, 0x00, 0x00, 0x00,
-	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00
-};
-
-static const char data_block_header[DATA_BLOCK_HEADER_SIZE] = {
-	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
-	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
-	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
-	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
-	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
-	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
-	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
-	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
-	0xfb, 0x14, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
-	0x00, 0x04, 0x15, 0x00, 0x00, 0xfc, 0x00, 0x00,
-	0x01, 0x00, 0x00, 0xdb
-};
-
-static const char data_last_block_header[DATA_BLOCK_HEADER_SIZE] = {
-	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
-	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
-	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
-	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
-	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
-	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
-	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
-	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
-	0xfb, 0x14, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
-	0x2a, 0x00, 0x20, 0x00, 0xc0, 0x0f, 0x00, 0x00,
-	0x01, 0x00, 0x00, 0xd7
-};
-
-static const char data_block_footer[DATA_BLOCK_FOOTER_SIZE] = {
-	0xfb, 0x14, 0x02, 0x20, 0x00, 0x00, 0x00, 0x00,
-	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
-	0x80, 0x00, 0x00, 0x4f
-};
-
-static int gm12u320_usb_alloc(struct gm12u320_device *gm12u320)
-{
-	int i, block_size;
-	const char *hdr;
-
-	gm12u320->cmd_buf = kmalloc(CMD_SIZE, GFP_KERNEL);
-	if (!gm12u320->cmd_buf)
-		return -ENOMEM;
-
-	for (i = 0; i < GM12U320_BLOCK_COUNT; i++) {
-		if (i == GM12U320_BLOCK_COUNT - 1) {
-			block_size = DATA_LAST_BLOCK_SIZE;
-			hdr = data_last_block_header;
-		} else {
-			block_size = DATA_BLOCK_SIZE;
-			hdr = data_block_header;
-		}
-
-		gm12u320->data_buf[i] = kzalloc(block_size, GFP_KERNEL);
-		if (!gm12u320->data_buf[i])
-			return -ENOMEM;
-
-		memcpy(gm12u320->data_buf[i], hdr, DATA_BLOCK_HEADER_SIZE);
-		memcpy(gm12u320->data_buf[i] +
-				(block_size - DATA_BLOCK_FOOTER_SIZE),
-		       data_block_footer, DATA_BLOCK_FOOTER_SIZE);
-	}
-
-	gm12u320->fb_update.workq = create_singlethread_workqueue(DRIVER_NAME);
-	if (!gm12u320->fb_update.workq)
-		return -ENOMEM;
-
-	return 0;
-}
-
-static void gm12u320_usb_free(struct gm12u320_device *gm12u320)
-{
-	int i;
-
-	if (gm12u320->fb_update.workq)
-		destroy_workqueue(gm12u320->fb_update.workq);
-
-	for (i = 0; i < GM12U320_BLOCK_COUNT; i++)
-		kfree(gm12u320->data_buf[i]);
-
-	kfree(gm12u320->cmd_buf);
-}
-
-static int gm12u320_misc_request(struct gm12u320_device *gm12u320,
-				 u8 req_a, u8 req_b,
-				 u8 arg_a, u8 arg_b, u8 arg_c, u8 arg_d)
-{
-	int ret, len;
-
-	memcpy(gm12u320->cmd_buf, &cmd_misc, CMD_SIZE);
-	gm12u320->cmd_buf[20] = req_a;
-	gm12u320->cmd_buf[21] = req_b;
-	gm12u320->cmd_buf[22] = arg_a;
-	gm12u320->cmd_buf[23] = arg_b;
-	gm12u320->cmd_buf[24] = arg_c;
-	gm12u320->cmd_buf[25] = arg_d;
-
-	/* Send request */
-	ret = usb_bulk_msg(gm12u320->udev,
-			   usb_sndbulkpipe(gm12u320->udev, MISC_SND_EPT),
-			   gm12u320->cmd_buf, CMD_SIZE, &len, CMD_TIMEOUT);
-	if (ret || len != CMD_SIZE) {
-		dev_err(&gm12u320->udev->dev, "Misc. req. error %d\n", ret);
-		return -EIO;
-	}
-
-	/* Read value */
-	ret = usb_bulk_msg(gm12u320->udev,
-			   usb_rcvbulkpipe(gm12u320->udev, MISC_RCV_EPT),
-			   gm12u320->cmd_buf, MISC_VALUE_SIZE, &len,
-			   DATA_TIMEOUT);
-	if (ret || len != MISC_VALUE_SIZE) {
-		dev_err(&gm12u320->udev->dev, "Misc. value error %d\n", ret);
-		return -EIO;
-	}
-	/* cmd_buf[0] now contains the read value, which we don't use */
-
-	/* Read status */
-	ret = usb_bulk_msg(gm12u320->udev,
-			   usb_rcvbulkpipe(gm12u320->udev, MISC_RCV_EPT),
-			   gm12u320->cmd_buf, READ_STATUS_SIZE, &len,
-			   CMD_TIMEOUT);
-	if (ret || len != READ_STATUS_SIZE) {
-		dev_err(&gm12u320->udev->dev, "Misc. status error %d\n", ret);
-		return -EIO;
-	}
-
-	return 0;
-}
-
-static void gm12u320_32bpp_to_24bpp_packed(u8 *dst, u8 *src, int len)
-{
-	while (len--) {
-		*dst++ = *src++;
-		*dst++ = *src++;
-		*dst++ = *src++;
-		src++;
-	}
-}
-
-static void gm12u320_copy_fb_to_blocks(struct gm12u320_device *gm12u320)
-{
-	int block, dst_offset, len, remain, ret, x1, x2, y1, y2;
-	struct drm_framebuffer *fb;
-	void *vaddr;
-	u8 *src;
-
-	mutex_lock(&gm12u320->fb_update.lock);
-
-	if (!gm12u320->fb_update.fb)
-		goto unlock;
-
-	fb = gm12u320->fb_update.fb;
-	x1 = gm12u320->fb_update.rect.x1;
-	x2 = gm12u320->fb_update.rect.x2;
-	y1 = gm12u320->fb_update.rect.y1;
-	y2 = gm12u320->fb_update.rect.y2;
-
-	vaddr = drm_gem_shmem_vmap(fb->obj[0]);
-	if (IS_ERR(vaddr)) {
-		DRM_ERROR("failed to vmap fb: %ld\n", PTR_ERR(vaddr));
-		goto put_fb;
-	}
-
-	if (fb->obj[0]->import_attach) {
-		ret = dma_buf_begin_cpu_access(
-			fb->obj[0]->import_attach->dmabuf, DMA_FROM_DEVICE);
-		if (ret) {
-			DRM_ERROR("dma_buf_begin_cpu_access err: %d\n", ret);
-			goto vunmap;
-		}
-	}
-
-	src = vaddr + y1 * fb->pitches[0] + x1 * 4;
-
-	x1 += (GM12U320_REAL_WIDTH - GM12U320_USER_WIDTH) / 2;
-	x2 += (GM12U320_REAL_WIDTH - GM12U320_USER_WIDTH) / 2;
-
-	for (; y1 < y2; y1++) {
-		remain = 0;
-		len = (x2 - x1) * 3;
-		dst_offset = (y1 * GM12U320_REAL_WIDTH + x1) * 3;
-		block = dst_offset / DATA_BLOCK_CONTENT_SIZE;
-		dst_offset %= DATA_BLOCK_CONTENT_SIZE;
-
-		if ((dst_offset + len) > DATA_BLOCK_CONTENT_SIZE) {
-			remain = dst_offset + len - DATA_BLOCK_CONTENT_SIZE;
-			len = DATA_BLOCK_CONTENT_SIZE - dst_offset;
-		}
-
-		dst_offset += DATA_BLOCK_HEADER_SIZE;
-		len /= 3;
-
-		gm12u320_32bpp_to_24bpp_packed(
-			gm12u320->data_buf[block] + dst_offset,
-			src, len);
-
-		if (remain) {
-			block++;
-			dst_offset = DATA_BLOCK_HEADER_SIZE;
-			gm12u320_32bpp_to_24bpp_packed(
-				gm12u320->data_buf[block] + dst_offset,
-				src + len * 4, remain / 3);
-		}
-		src += fb->pitches[0];
-	}
-
-	if (fb->obj[0]->import_attach) {
-		ret = dma_buf_end_cpu_access(fb->obj[0]->import_attach->dmabuf,
-					     DMA_FROM_DEVICE);
-		if (ret)
-			DRM_ERROR("dma_buf_end_cpu_access err: %d\n", ret);
-	}
-vunmap:
-	drm_gem_shmem_vunmap(fb->obj[0], vaddr);
-put_fb:
-	drm_framebuffer_put(fb);
-	gm12u320->fb_update.fb = NULL;
-unlock:
-	mutex_unlock(&gm12u320->fb_update.lock);
-}
-
-static int gm12u320_fb_update_ready(struct gm12u320_device *gm12u320)
-{
-	int ret;
-
-	mutex_lock(&gm12u320->fb_update.lock);
-	ret = !gm12u320->fb_update.run || gm12u320->fb_update.fb != NULL;
-	mutex_unlock(&gm12u320->fb_update.lock);
-
-	return ret;
-}
-
-static void gm12u320_fb_update_work(struct work_struct *work)
-{
-	struct gm12u320_device *gm12u320 =
-		container_of(work, struct gm12u320_device, fb_update.work);
-	int draw_status_timeout = FIRST_FRAME_TIMEOUT;
-	int block, block_size, len;
-	int frame = 0;
-	int ret = 0;
-
-	while (gm12u320->fb_update.run) {
-		gm12u320_copy_fb_to_blocks(gm12u320);
-
-		for (block = 0; block < GM12U320_BLOCK_COUNT; block++) {
-			if (block == GM12U320_BLOCK_COUNT - 1)
-				block_size = DATA_LAST_BLOCK_SIZE;
-			else
-				block_size = DATA_BLOCK_SIZE;
-
-			/* Send data command to device */
-			memcpy(gm12u320->cmd_buf, cmd_data, CMD_SIZE);
-			gm12u320->cmd_buf[8] = block_size & 0xff;
-			gm12u320->cmd_buf[9] = block_size >> 8;
-			gm12u320->cmd_buf[20] = 0xfc - block * 4;
-			gm12u320->cmd_buf[21] = block | (frame << 7);
-
-			ret = usb_bulk_msg(gm12u320->udev,
-				usb_sndbulkpipe(gm12u320->udev, DATA_SND_EPT),
-				gm12u320->cmd_buf, CMD_SIZE, &len,
-				CMD_TIMEOUT);
-			if (ret || len != CMD_SIZE)
-				goto err;
-
-			/* Send data block to device */
-			ret = usb_bulk_msg(gm12u320->udev,
-				usb_sndbulkpipe(gm12u320->udev, DATA_SND_EPT),
-				gm12u320->data_buf[block], block_size,
-				&len, DATA_TIMEOUT);
-			if (ret || len != block_size)
-				goto err;
-
-			/* Read status */
-			ret = usb_bulk_msg(gm12u320->udev,
-				usb_rcvbulkpipe(gm12u320->udev, DATA_RCV_EPT),
-				gm12u320->cmd_buf, READ_STATUS_SIZE, &len,
-				CMD_TIMEOUT);
-			if (ret || len != READ_STATUS_SIZE)
-				goto err;
-		}
-
-		/* Send draw command to device */
-		memcpy(gm12u320->cmd_buf, cmd_draw, CMD_SIZE);
-		ret = usb_bulk_msg(gm12u320->udev,
-			usb_sndbulkpipe(gm12u320->udev, DATA_SND_EPT),
-			gm12u320->cmd_buf, CMD_SIZE, &len, CMD_TIMEOUT);
-		if (ret || len != CMD_SIZE)
-			goto err;
-
-		/* Read status */
-		ret = usb_bulk_msg(gm12u320->udev,
-			usb_rcvbulkpipe(gm12u320->udev, DATA_RCV_EPT),
-			gm12u320->cmd_buf, READ_STATUS_SIZE, &len,
-			draw_status_timeout);
-		if (ret || len != READ_STATUS_SIZE)
-			goto err;
-
-		draw_status_timeout = CMD_TIMEOUT;
-		frame = !frame;
-
-		/*
-		 * We must draw a frame every 2s otherwise the projector
-		 * switches back to showing its logo.
-		 */
-		wait_event_timeout(gm12u320->fb_update.waitq,
-				   gm12u320_fb_update_ready(gm12u320),
-				   IDLE_TIMEOUT);
-	}
-	return;
-err:
-	/* Do not log errors caused by module unload or device unplug */
-	if (ret != -ECONNRESET && ret != -ESHUTDOWN)
-		dev_err(&gm12u320->udev->dev, "Frame update error: %d\n", ret);
-}
-
-static void gm12u320_fb_mark_dirty(struct drm_framebuffer *fb,
-				   struct drm_rect *dirty)
-{
-	struct gm12u320_device *gm12u320 = fb->dev->dev_private;
-	struct drm_framebuffer *old_fb = NULL;
-	bool wakeup = false;
-
-	mutex_lock(&gm12u320->fb_update.lock);
-
-	if (gm12u320->fb_update.fb != fb) {
-		old_fb = gm12u320->fb_update.fb;
-		drm_framebuffer_get(fb);
-		gm12u320->fb_update.fb = fb;
-		gm12u320->fb_update.rect = *dirty;
-		wakeup = true;
-	} else {
-		struct drm_rect *rect = &gm12u320->fb_update.rect;
-
-		rect->x1 = min(rect->x1, dirty->x1);
-		rect->y1 = min(rect->y1, dirty->y1);
-		rect->x2 = max(rect->x2, dirty->x2);
-		rect->y2 = max(rect->y2, dirty->y2);
-	}
-
-	mutex_unlock(&gm12u320->fb_update.lock);
-
-	if (wakeup)
-		wake_up(&gm12u320->fb_update.waitq);
-
-	if (old_fb)
-		drm_framebuffer_put(old_fb);
-}
-
-static void gm12u320_start_fb_update(struct gm12u320_device *gm12u320)
-{
-	mutex_lock(&gm12u320->fb_update.lock);
-	gm12u320->fb_update.run = true;
-	mutex_unlock(&gm12u320->fb_update.lock);
-
-	queue_work(gm12u320->fb_update.workq, &gm12u320->fb_update.work);
-}
-
-static void gm12u320_stop_fb_update(struct gm12u320_device *gm12u320)
-{
-	mutex_lock(&gm12u320->fb_update.lock);
-	gm12u320->fb_update.run = false;
-	mutex_unlock(&gm12u320->fb_update.lock);
-
-	wake_up(&gm12u320->fb_update.waitq);
-	cancel_work_sync(&gm12u320->fb_update.work);
-
-	mutex_lock(&gm12u320->fb_update.lock);
-	if (gm12u320->fb_update.fb) {
-		drm_framebuffer_put(gm12u320->fb_update.fb);
-		gm12u320->fb_update.fb = NULL;
-	}
-	mutex_unlock(&gm12u320->fb_update.lock);
-}
-
-static int gm12u320_set_ecomode(struct gm12u320_device *gm12u320)
-{
-	return gm12u320_misc_request(gm12u320, MISC_REQ_GET_SET_ECO_A,
-				     MISC_REQ_GET_SET_ECO_B, 0x01 /* set */,
-				     eco_mode ? 0x01 : 0x00, 0x00, 0x01);
-}
-
-/* ------------------------------------------------------------------ */
-/* gm12u320 connector						      */
-
-/*
- * We use fake EDID info so that userspace know that it is dealing with
- * an Acer projector, rather then listing this as an "unknown" monitor.
- * Note this assumes this driver is only ever used with the Acer C120, if we
- * add support for other devices the vendor and model should be parameterized.
- */
-static struct edid gm12u320_edid = {
-	.header		= { 0x00, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x00 },
-	.mfg_id		= { 0x04, 0x72 },	/* "ACR" */
-	.prod_code	= { 0x20, 0xc1 },	/* C120h */
-	.serial		= 0xaa55aa55,
-	.mfg_week	= 1,
-	.mfg_year	= 16,
-	.version	= 1,			/* EDID 1.3 */
-	.revision	= 3,			/* EDID 1.3 */
-	.input		= 0x08,			/* Analog input */
-	.features	= 0x0a,			/* Pref timing in DTD 1 */
-	.standard_timings = { { 1, 1 }, { 1, 1 }, { 1, 1 }, { 1, 1 },
-			      { 1, 1 }, { 1, 1 }, { 1, 1 }, { 1, 1 } },
-	.detailed_timings = { {
-		.pixel_clock = 3383,
-		/* hactive = 848, hblank = 256 */
-		.data.pixel_data.hactive_lo = 0x50,
-		.data.pixel_data.hblank_lo = 0x00,
-		.data.pixel_data.hactive_hblank_hi = 0x31,
-		/* vactive = 480, vblank = 28 */
-		.data.pixel_data.vactive_lo = 0xe0,
-		.data.pixel_data.vblank_lo = 0x1c,
-		.data.pixel_data.vactive_vblank_hi = 0x10,
-		/* hsync offset 40 pw 128, vsync offset 1 pw 4 */
-		.data.pixel_data.hsync_offset_lo = 0x28,
-		.data.pixel_data.hsync_pulse_width_lo = 0x80,
-		.data.pixel_data.vsync_offset_pulse_width_lo = 0x14,
-		.data.pixel_data.hsync_vsync_offset_pulse_width_hi = 0x00,
-		/* Digital separate syncs, hsync+, vsync+ */
-		.data.pixel_data.misc = 0x1e,
-	}, {
-		.pixel_clock = 0,
-		.data.other_data.type = 0xfd, /* Monitor ranges */
-		.data.other_data.data.range.min_vfreq = 59,
-		.data.other_data.data.range.max_vfreq = 61,
-		.data.other_data.data.range.min_hfreq_khz = 29,
-		.data.other_data.data.range.max_hfreq_khz = 32,
-		.data.other_data.data.range.pixel_clock_mhz = 4, /* 40 MHz */
-		.data.other_data.data.range.flags = 0,
-		.data.other_data.data.range.formula.cvt = {
-			0xa0, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20 },
-	}, {
-		.pixel_clock = 0,
-		.data.other_data.type = 0xfc, /* Model string */
-		.data.other_data.data.str.str = {
-			'P', 'r', 'o', 'j', 'e', 'c', 't', 'o', 'r', '\n',
-			' ', ' ',  ' ' },
-	}, {
-		.pixel_clock = 0,
-		.data.other_data.type = 0xfe, /* Unspecified text / padding */
-		.data.other_data.data.str.str = {
-			'\n', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ',
-			' ', ' ',  ' ' },
-	} },
-	.checksum = 0x13,
-};
-
-static int gm12u320_conn_get_modes(struct drm_connector *connector)
-{
-	drm_connector_update_edid_property(connector, &gm12u320_edid);
-	return drm_add_edid_modes(connector, &gm12u320_edid);
-}
-
-static const struct drm_connector_helper_funcs gm12u320_conn_helper_funcs = {
-	.get_modes = gm12u320_conn_get_modes,
-};
-
-static const struct drm_connector_funcs gm12u320_conn_funcs = {
-	.fill_modes = drm_helper_probe_single_connector_modes,
-	.destroy = drm_connector_cleanup,
-	.reset = drm_atomic_helper_connector_reset,
-	.atomic_duplicate_state = drm_atomic_helper_connector_duplicate_state,
-	.atomic_destroy_state = drm_atomic_helper_connector_destroy_state,
-};
-
-static int gm12u320_conn_init(struct gm12u320_device *gm12u320)
-{
-	drm_connector_helper_add(&gm12u320->conn, &gm12u320_conn_helper_funcs);
-	return drm_connector_init(&gm12u320->dev, &gm12u320->conn,
-				  &gm12u320_conn_funcs, DRM_MODE_CONNECTOR_VGA);
-}
-
-/* ------------------------------------------------------------------ */
-/* gm12u320 (simple) display pipe				      */
-
-static void gm12u320_pipe_enable(struct drm_simple_display_pipe *pipe,
-				 struct drm_crtc_state *crtc_state,
-				 struct drm_plane_state *plane_state)
-{
-	struct gm12u320_device *gm12u320 = pipe->crtc.dev->dev_private;
-	struct drm_rect rect = { 0, 0, GM12U320_USER_WIDTH, GM12U320_HEIGHT };
-
-	gm12u320_fb_mark_dirty(plane_state->fb, &rect);
-	gm12u320_start_fb_update(gm12u320);
-	gm12u320->pipe_enabled = true;
-}
-
-static void gm12u320_pipe_disable(struct drm_simple_display_pipe *pipe)
-{
-	struct gm12u320_device *gm12u320 = pipe->crtc.dev->dev_private;
-
-	gm12u320_stop_fb_update(gm12u320);
-	gm12u320->pipe_enabled = false;
-}
-
-static void gm12u320_pipe_update(struct drm_simple_display_pipe *pipe,
-				 struct drm_plane_state *old_state)
-{
-	struct drm_plane_state *state = pipe->plane.state;
-	struct drm_crtc *crtc = &pipe->crtc;
-	struct drm_rect rect;
-
-	if (drm_atomic_helper_damage_merged(old_state, state, &rect))
-		gm12u320_fb_mark_dirty(pipe->plane.state->fb, &rect);
-
-	if (crtc->state->event) {
-		spin_lock_irq(&crtc->dev->event_lock);
-		drm_crtc_send_vblank_event(crtc, crtc->state->event);
-		crtc->state->event = NULL;
-		spin_unlock_irq(&crtc->dev->event_lock);
-	}
-}
-
-static const struct drm_simple_display_pipe_funcs gm12u320_pipe_funcs = {
-	.enable	    = gm12u320_pipe_enable,
-	.disable    = gm12u320_pipe_disable,
-	.update	    = gm12u320_pipe_update,
-};
-
-static const uint32_t gm12u320_pipe_formats[] = {
-	DRM_FORMAT_XRGB8888,
-};
-
-static const uint64_t gm12u320_pipe_modifiers[] = {
-	DRM_FORMAT_MOD_LINEAR,
-	DRM_FORMAT_MOD_INVALID
-};
-
-static void gm12u320_driver_release(struct drm_device *dev)
-{
-	struct gm12u320_device *gm12u320 = dev->dev_private;
-
-	gm12u320_usb_free(gm12u320);
-	drm_mode_config_cleanup(dev);
-	drm_dev_fini(dev);
-	kfree(gm12u320);
-}
-
-DEFINE_DRM_GEM_SHMEM_FOPS(gm12u320_fops);
-
-static struct drm_driver gm12u320_drm_driver = {
-	.driver_features = DRIVER_MODESET | DRIVER_GEM | DRIVER_ATOMIC,
-
-	.name		 = DRIVER_NAME,
-	.desc		 = DRIVER_DESC,
-	.date		 = DRIVER_DATE,
-	.major		 = DRIVER_MAJOR,
-	.minor		 = DRIVER_MINOR,
-
-	.release	 = gm12u320_driver_release,
-	.fops		 = &gm12u320_fops,
-	DRM_GEM_SHMEM_DRIVER_OPS,
-};
-
-static const struct drm_mode_config_funcs gm12u320_mode_config_funcs = {
-	.fb_create = drm_gem_fb_create_with_dirty,
-	.atomic_check = drm_atomic_helper_check,
-	.atomic_commit = drm_atomic_helper_commit,
-};
-
-static int gm12u320_usb_probe(struct usb_interface *interface,
-			      const struct usb_device_id *id)
-{
-	struct gm12u320_device *gm12u320;
-	struct drm_device *dev;
-	int ret;
-
-	/*
-	 * The gm12u320 presents itself to the system as 2 usb mass-storage
-	 * interfaces, we only care about / need the first one.
-	 */
-	if (interface->cur_altsetting->desc.bInterfaceNumber != 0)
-		return -ENODEV;
-
-	gm12u320 = kzalloc(sizeof(*gm12u320), GFP_KERNEL);
-	if (gm12u320 == NULL)
-		return -ENOMEM;
-
-	gm12u320->udev = interface_to_usbdev(interface);
-	INIT_WORK(&gm12u320->fb_update.work, gm12u320_fb_update_work);
-	mutex_init(&gm12u320->fb_update.lock);
-	init_waitqueue_head(&gm12u320->fb_update.waitq);
-
-	dev = &gm12u320->dev;
-	ret = drm_dev_init(dev, &gm12u320_drm_driver, &interface->dev);
-	if (ret) {
-		kfree(gm12u320);
-		return ret;
-	}
-	dev->dev_private = gm12u320;
-
-	drm_mode_config_init(dev);
-	dev->mode_config.min_width = GM12U320_USER_WIDTH;
-	dev->mode_config.max_width = GM12U320_USER_WIDTH;
-	dev->mode_config.min_height = GM12U320_HEIGHT;
-	dev->mode_config.max_height = GM12U320_HEIGHT;
-	dev->mode_config.funcs = &gm12u320_mode_config_funcs;
-
-	ret = gm12u320_usb_alloc(gm12u320);
-	if (ret)
-		goto err_put;
-
-	ret = gm12u320_set_ecomode(gm12u320);
-	if (ret)
-		goto err_put;
-
-	ret = gm12u320_conn_init(gm12u320);
-	if (ret)
-		goto err_put;
-
-	ret = drm_simple_display_pipe_init(&gm12u320->dev,
-					   &gm12u320->pipe,
-					   &gm12u320_pipe_funcs,
-					   gm12u320_pipe_formats,
-					   ARRAY_SIZE(gm12u320_pipe_formats),
-					   gm12u320_pipe_modifiers,
-					   &gm12u320->conn);
-	if (ret)
-		goto err_put;
-
-	drm_mode_config_reset(dev);
-
-	usb_set_intfdata(interface, dev);
-	ret = drm_dev_register(dev, 0);
-	if (ret)
-		goto err_put;
-
-	drm_fbdev_generic_setup(dev, dev->mode_config.preferred_depth);
-
-	return 0;
-
-err_put:
-	drm_dev_put(dev);
-	return ret;
-}
-
-static void gm12u320_usb_disconnect(struct usb_interface *interface)
-{
-	struct drm_device *dev = usb_get_intfdata(interface);
-	struct gm12u320_device *gm12u320 = dev->dev_private;
-
-	gm12u320_stop_fb_update(gm12u320);
-	drm_dev_unplug(dev);
-	drm_dev_put(dev);
-}
-
-#ifdef CONFIG_PM
-static int gm12u320_suspend(struct usb_interface *interface,
-			    pm_message_t message)
-{
-	struct drm_device *dev = usb_get_intfdata(interface);
-	struct gm12u320_device *gm12u320 = dev->dev_private;
-
-	if (gm12u320->pipe_enabled)
-		gm12u320_stop_fb_update(gm12u320);
-
-	return 0;
-}
-
-static int gm12u320_resume(struct usb_interface *interface)
-{
-	struct drm_device *dev = usb_get_intfdata(interface);
-	struct gm12u320_device *gm12u320 = dev->dev_private;
-
-	gm12u320_set_ecomode(gm12u320);
-	if (gm12u320->pipe_enabled)
-		gm12u320_start_fb_update(gm12u320);
-
-	return 0;
-}
-#endif
-
-static const struct usb_device_id id_table[] = {
-	{ USB_DEVICE(0x1de1, 0xc102) },
-	{},
-};
-MODULE_DEVICE_TABLE(usb, id_table);
-
-static struct usb_driver gm12u320_usb_driver = {
-	.name = "gm12u320",
-	.probe = gm12u320_usb_probe,
-	.disconnect = gm12u320_usb_disconnect,
-	.id_table = id_table,
-#ifdef CONFIG_PM
-	.suspend = gm12u320_suspend,
-	.resume = gm12u320_resume,
-	.reset_resume = gm12u320_resume,
-#endif
-};
-
-module_usb_driver(gm12u320_usb_driver);
-MODULE_AUTHOR("Hans de Goede <hdegoede@redhat.com>");
-MODULE_LICENSE("GPL");
diff --git a/drivers/gpu/drm/tiny/Kconfig b/drivers/gpu/drm/tiny/Kconfig
index f8c9a0e71dde..504763423d46 100644
--- a/drivers/gpu/drm/tiny/Kconfig
+++ b/drivers/gpu/drm/tiny/Kconfig
@@ -1,4 +1,14 @@
 # SPDX-License-Identifier: GPL-2.0-only
+
+config DRM_GM12U320
+	tristate "GM12U320 driver for USB projectors"
+	depends on DRM && USB
+	select DRM_KMS_HELPER
+	select DRM_GEM_SHMEM_HELPER
+	help
+	 This is a KMS driver for projectors which use the GM12U320 chipset
+	 for video transfer over USB2/3, such as the Acer C120 mini projector.
+
 config TINYDRM_HX8357D
 	tristate "DRM support for HX8357D display panels"
 	depends on DRM && SPI
diff --git a/drivers/gpu/drm/tiny/Makefile b/drivers/gpu/drm/tiny/Makefile
index 6490167a9ad1..896cf31132d3 100644
--- a/drivers/gpu/drm/tiny/Makefile
+++ b/drivers/gpu/drm/tiny/Makefile
@@ -1,5 +1,6 @@
 # SPDX-License-Identifier: GPL-2.0-only
 
+obj-$(CONFIG_DRM_GM12U320)		+= gm12u320.o
 obj-$(CONFIG_TINYDRM_HX8357D)		+= hx8357d.o
 obj-$(CONFIG_TINYDRM_ILI9225)		+= ili9225.o
 obj-$(CONFIG_TINYDRM_ILI9341)		+= ili9341.o
diff --git a/drivers/gpu/drm/tiny/gm12u320.c b/drivers/gpu/drm/tiny/gm12u320.c
new file mode 100644
index 000000000000..b6f47b8cf240
--- /dev/null
+++ b/drivers/gpu/drm/tiny/gm12u320.c
@@ -0,0 +1,814 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Copyright 2019 Hans de Goede <hdegoede@redhat.com>
+ */
+
+#include <linux/dma-buf.h>
+#include <linux/module.h>
+#include <linux/usb.h>
+
+#include <drm/drm_atomic_helper.h>
+#include <drm/drm_atomic_state_helper.h>
+#include <drm/drm_connector.h>
+#include <drm/drm_damage_helper.h>
+#include <drm/drm_drv.h>
+#include <drm/drm_fb_helper.h>
+#include <drm/drm_file.h>
+#include <drm/drm_format_helper.h>
+#include <drm/drm_fourcc.h>
+#include <drm/drm_gem_shmem_helper.h>
+#include <drm/drm_gem_framebuffer_helper.h>
+#include <drm/drm_ioctl.h>
+#include <drm/drm_modeset_helper_vtables.h>
+#include <drm/drm_probe_helper.h>
+#include <drm/drm_simple_kms_helper.h>
+#include <drm/drm_vblank.h>
+
+static bool eco_mode;
+module_param(eco_mode, bool, 0644);
+MODULE_PARM_DESC(eco_mode, "Turn on Eco mode (less bright, more silent)");
+
+#define DRIVER_NAME		"gm12u320"
+#define DRIVER_DESC		"Grain Media GM12U320 USB projector display"
+#define DRIVER_DATE		"2019"
+#define DRIVER_MAJOR		1
+#define DRIVER_MINOR		0
+#define DRIVER_PATCHLEVEL	1
+
+/*
+ * The DLP has an actual width of 854 pixels, but that is not a multiple
+ * of 8, breaking things left and right, so we export a width of 848.
+ */
+#define GM12U320_USER_WIDTH		848
+#define GM12U320_REAL_WIDTH		854
+#define GM12U320_HEIGHT			480
+
+#define GM12U320_BLOCK_COUNT		20
+
+#define MISC_RCV_EPT			1
+#define DATA_RCV_EPT			2
+#define DATA_SND_EPT			3
+#define MISC_SND_EPT			4
+
+#define DATA_BLOCK_HEADER_SIZE		84
+#define DATA_BLOCK_CONTENT_SIZE		64512
+#define DATA_BLOCK_FOOTER_SIZE		20
+#define DATA_BLOCK_SIZE			(DATA_BLOCK_HEADER_SIZE + \
+					 DATA_BLOCK_CONTENT_SIZE + \
+					 DATA_BLOCK_FOOTER_SIZE)
+#define DATA_LAST_BLOCK_CONTENT_SIZE	4032
+#define DATA_LAST_BLOCK_SIZE		(DATA_BLOCK_HEADER_SIZE + \
+					 DATA_LAST_BLOCK_CONTENT_SIZE + \
+					 DATA_BLOCK_FOOTER_SIZE)
+
+#define CMD_SIZE			31
+#define READ_STATUS_SIZE		13
+#define MISC_VALUE_SIZE			4
+
+#define CMD_TIMEOUT			msecs_to_jiffies(200)
+#define DATA_TIMEOUT			msecs_to_jiffies(1000)
+#define IDLE_TIMEOUT			msecs_to_jiffies(2000)
+#define FIRST_FRAME_TIMEOUT		msecs_to_jiffies(2000)
+
+#define MISC_REQ_GET_SET_ECO_A		0xff
+#define MISC_REQ_GET_SET_ECO_B		0x35
+/* Windows driver does once every second, with arg d = 1, other args 0 */
+#define MISC_REQ_UNKNOWN1_A		0xff
+#define MISC_REQ_UNKNOWN1_B		0x38
+/* Windows driver does this on init, with arg a, b = 0, c = 0xa0, d = 4 */
+#define MISC_REQ_UNKNOWN2_A		0xa5
+#define MISC_REQ_UNKNOWN2_B		0x00
+
+struct gm12u320_device {
+	struct drm_device	         dev;
+	struct drm_simple_display_pipe   pipe;
+	struct drm_connector	         conn;
+	struct usb_device               *udev;
+	unsigned char                   *cmd_buf;
+	unsigned char                   *data_buf[GM12U320_BLOCK_COUNT];
+	bool                             pipe_enabled;
+	struct {
+		bool                     run;
+		struct workqueue_struct *workq;
+		struct work_struct       work;
+		wait_queue_head_t        waitq;
+		struct mutex             lock;
+		struct drm_framebuffer  *fb;
+		struct drm_rect          rect;
+	} fb_update;
+};
+
+static const char cmd_data[CMD_SIZE] = {
+	0x55, 0x53, 0x42, 0x43, 0x00, 0x00, 0x00, 0x00,
+	0x68, 0xfc, 0x00, 0x00, 0x00, 0x00, 0x10, 0xff,
+	0x00, 0x00, 0x00, 0x00, 0xfc, 0x00, 0x80, 0x00,
+	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00
+};
+
+static const char cmd_draw[CMD_SIZE] = {
+	0x55, 0x53, 0x42, 0x43, 0x00, 0x00, 0x00, 0x00,
+	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x10, 0xfe,
+	0x00, 0x00, 0x00, 0xc0, 0xd1, 0x05, 0x00, 0x40,
+	0x00, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00
+};
+
+static const char cmd_misc[CMD_SIZE] = {
+	0x55, 0x53, 0x42, 0x43, 0x00, 0x00, 0x00, 0x00,
+	0x04, 0x00, 0x00, 0x00, 0x80, 0x01, 0x10, 0xfd,
+	0x00, 0x00, 0x00, 0xc0, 0x00, 0x00, 0x00, 0x00,
+	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00
+};
+
+static const char data_block_header[DATA_BLOCK_HEADER_SIZE] = {
+	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+	0xfb, 0x14, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+	0x00, 0x04, 0x15, 0x00, 0x00, 0xfc, 0x00, 0x00,
+	0x01, 0x00, 0x00, 0xdb
+};
+
+static const char data_last_block_header[DATA_BLOCK_HEADER_SIZE] = {
+	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+	0xfb, 0x14, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+	0x2a, 0x00, 0x20, 0x00, 0xc0, 0x0f, 0x00, 0x00,
+	0x01, 0x00, 0x00, 0xd7
+};
+
+static const char data_block_footer[DATA_BLOCK_FOOTER_SIZE] = {
+	0xfb, 0x14, 0x02, 0x20, 0x00, 0x00, 0x00, 0x00,
+	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+	0x80, 0x00, 0x00, 0x4f
+};
+
+static int gm12u320_usb_alloc(struct gm12u320_device *gm12u320)
+{
+	int i, block_size;
+	const char *hdr;
+
+	gm12u320->cmd_buf = kmalloc(CMD_SIZE, GFP_KERNEL);
+	if (!gm12u320->cmd_buf)
+		return -ENOMEM;
+
+	for (i = 0; i < GM12U320_BLOCK_COUNT; i++) {
+		if (i == GM12U320_BLOCK_COUNT - 1) {
+			block_size = DATA_LAST_BLOCK_SIZE;
+			hdr = data_last_block_header;
+		} else {
+			block_size = DATA_BLOCK_SIZE;
+			hdr = data_block_header;
+		}
+
+		gm12u320->data_buf[i] = kzalloc(block_size, GFP_KERNEL);
+		if (!gm12u320->data_buf[i])
+			return -ENOMEM;
+
+		memcpy(gm12u320->data_buf[i], hdr, DATA_BLOCK_HEADER_SIZE);
+		memcpy(gm12u320->data_buf[i] +
+				(block_size - DATA_BLOCK_FOOTER_SIZE),
+		       data_block_footer, DATA_BLOCK_FOOTER_SIZE);
+	}
+
+	gm12u320->fb_update.workq = create_singlethread_workqueue(DRIVER_NAME);
+	if (!gm12u320->fb_update.workq)
+		return -ENOMEM;
+
+	return 0;
+}
+
+static void gm12u320_usb_free(struct gm12u320_device *gm12u320)
+{
+	int i;
+
+	if (gm12u320->fb_update.workq)
+		destroy_workqueue(gm12u320->fb_update.workq);
+
+	for (i = 0; i < GM12U320_BLOCK_COUNT; i++)
+		kfree(gm12u320->data_buf[i]);
+
+	kfree(gm12u320->cmd_buf);
+}
+
+static int gm12u320_misc_request(struct gm12u320_device *gm12u320,
+				 u8 req_a, u8 req_b,
+				 u8 arg_a, u8 arg_b, u8 arg_c, u8 arg_d)
+{
+	int ret, len;
+
+	memcpy(gm12u320->cmd_buf, &cmd_misc, CMD_SIZE);
+	gm12u320->cmd_buf[20] = req_a;
+	gm12u320->cmd_buf[21] = req_b;
+	gm12u320->cmd_buf[22] = arg_a;
+	gm12u320->cmd_buf[23] = arg_b;
+	gm12u320->cmd_buf[24] = arg_c;
+	gm12u320->cmd_buf[25] = arg_d;
+
+	/* Send request */
+	ret = usb_bulk_msg(gm12u320->udev,
+			   usb_sndbulkpipe(gm12u320->udev, MISC_SND_EPT),
+			   gm12u320->cmd_buf, CMD_SIZE, &len, CMD_TIMEOUT);
+	if (ret || len != CMD_SIZE) {
+		dev_err(&gm12u320->udev->dev, "Misc. req. error %d\n", ret);
+		return -EIO;
+	}
+
+	/* Read value */
+	ret = usb_bulk_msg(gm12u320->udev,
+			   usb_rcvbulkpipe(gm12u320->udev, MISC_RCV_EPT),
+			   gm12u320->cmd_buf, MISC_VALUE_SIZE, &len,
+			   DATA_TIMEOUT);
+	if (ret || len != MISC_VALUE_SIZE) {
+		dev_err(&gm12u320->udev->dev, "Misc. value error %d\n", ret);
+		return -EIO;
+	}
+	/* cmd_buf[0] now contains the read value, which we don't use */
+
+	/* Read status */
+	ret = usb_bulk_msg(gm12u320->udev,
+			   usb_rcvbulkpipe(gm12u320->udev, MISC_RCV_EPT),
+			   gm12u320->cmd_buf, READ_STATUS_SIZE, &len,
+			   CMD_TIMEOUT);
+	if (ret || len != READ_STATUS_SIZE) {
+		dev_err(&gm12u320->udev->dev, "Misc. status error %d\n", ret);
+		return -EIO;
+	}
+
+	return 0;
+}
+
+static void gm12u320_32bpp_to_24bpp_packed(u8 *dst, u8 *src, int len)
+{
+	while (len--) {
+		*dst++ = *src++;
+		*dst++ = *src++;
+		*dst++ = *src++;
+		src++;
+	}
+}
+
+static void gm12u320_copy_fb_to_blocks(struct gm12u320_device *gm12u320)
+{
+	int block, dst_offset, len, remain, ret, x1, x2, y1, y2;
+	struct drm_framebuffer *fb;
+	void *vaddr;
+	u8 *src;
+
+	mutex_lock(&gm12u320->fb_update.lock);
+
+	if (!gm12u320->fb_update.fb)
+		goto unlock;
+
+	fb = gm12u320->fb_update.fb;
+	x1 = gm12u320->fb_update.rect.x1;
+	x2 = gm12u320->fb_update.rect.x2;
+	y1 = gm12u320->fb_update.rect.y1;
+	y2 = gm12u320->fb_update.rect.y2;
+
+	vaddr = drm_gem_shmem_vmap(fb->obj[0]);
+	if (IS_ERR(vaddr)) {
+		DRM_ERROR("failed to vmap fb: %ld\n", PTR_ERR(vaddr));
+		goto put_fb;
+	}
+
+	if (fb->obj[0]->import_attach) {
+		ret = dma_buf_begin_cpu_access(
+			fb->obj[0]->import_attach->dmabuf, DMA_FROM_DEVICE);
+		if (ret) {
+			DRM_ERROR("dma_buf_begin_cpu_access err: %d\n", ret);
+			goto vunmap;
+		}
+	}
+
+	src = vaddr + y1 * fb->pitches[0] + x1 * 4;
+
+	x1 += (GM12U320_REAL_WIDTH - GM12U320_USER_WIDTH) / 2;
+	x2 += (GM12U320_REAL_WIDTH - GM12U320_USER_WIDTH) / 2;
+
+	for (; y1 < y2; y1++) {
+		remain = 0;
+		len = (x2 - x1) * 3;
+		dst_offset = (y1 * GM12U320_REAL_WIDTH + x1) * 3;
+		block = dst_offset / DATA_BLOCK_CONTENT_SIZE;
+		dst_offset %= DATA_BLOCK_CONTENT_SIZE;
+
+		if ((dst_offset + len) > DATA_BLOCK_CONTENT_SIZE) {
+			remain = dst_offset + len - DATA_BLOCK_CONTENT_SIZE;
+			len = DATA_BLOCK_CONTENT_SIZE - dst_offset;
+		}
+
+		dst_offset += DATA_BLOCK_HEADER_SIZE;
+		len /= 3;
+
+		gm12u320_32bpp_to_24bpp_packed(
+			gm12u320->data_buf[block] + dst_offset,
+			src, len);
+
+		if (remain) {
+			block++;
+			dst_offset = DATA_BLOCK_HEADER_SIZE;
+			gm12u320_32bpp_to_24bpp_packed(
+				gm12u320->data_buf[block] + dst_offset,
+				src + len * 4, remain / 3);
+		}
+		src += fb->pitches[0];
+	}
+
+	if (fb->obj[0]->import_attach) {
+		ret = dma_buf_end_cpu_access(fb->obj[0]->import_attach->dmabuf,
+					     DMA_FROM_DEVICE);
+		if (ret)
+			DRM_ERROR("dma_buf_end_cpu_access err: %d\n", ret);
+	}
+vunmap:
+	drm_gem_shmem_vunmap(fb->obj[0], vaddr);
+put_fb:
+	drm_framebuffer_put(fb);
+	gm12u320->fb_update.fb = NULL;
+unlock:
+	mutex_unlock(&gm12u320->fb_update.lock);
+}
+
+static int gm12u320_fb_update_ready(struct gm12u320_device *gm12u320)
+{
+	int ret;
+
+	mutex_lock(&gm12u320->fb_update.lock);
+	ret = !gm12u320->fb_update.run || gm12u320->fb_update.fb != NULL;
+	mutex_unlock(&gm12u320->fb_update.lock);
+
+	return ret;
+}
+
+static void gm12u320_fb_update_work(struct work_struct *work)
+{
+	struct gm12u320_device *gm12u320 =
+		container_of(work, struct gm12u320_device, fb_update.work);
+	int draw_status_timeout = FIRST_FRAME_TIMEOUT;
+	int block, block_size, len;
+	int frame = 0;
+	int ret = 0;
+
+	while (gm12u320->fb_update.run) {
+		gm12u320_copy_fb_to_blocks(gm12u320);
+
+		for (block = 0; block < GM12U320_BLOCK_COUNT; block++) {
+			if (block == GM12U320_BLOCK_COUNT - 1)
+				block_size = DATA_LAST_BLOCK_SIZE;
+			else
+				block_size = DATA_BLOCK_SIZE;
+
+			/* Send data command to device */
+			memcpy(gm12u320->cmd_buf, cmd_data, CMD_SIZE);
+			gm12u320->cmd_buf[8] = block_size & 0xff;
+			gm12u320->cmd_buf[9] = block_size >> 8;
+			gm12u320->cmd_buf[20] = 0xfc - block * 4;
+			gm12u320->cmd_buf[21] = block | (frame << 7);
+
+			ret = usb_bulk_msg(gm12u320->udev,
+				usb_sndbulkpipe(gm12u320->udev, DATA_SND_EPT),
+				gm12u320->cmd_buf, CMD_SIZE, &len,
+				CMD_TIMEOUT);
+			if (ret || len != CMD_SIZE)
+				goto err;
+
+			/* Send data block to device */
+			ret = usb_bulk_msg(gm12u320->udev,
+				usb_sndbulkpipe(gm12u320->udev, DATA_SND_EPT),
+				gm12u320->data_buf[block], block_size,
+				&len, DATA_TIMEOUT);
+			if (ret || len != block_size)
+				goto err;
+
+			/* Read status */
+			ret = usb_bulk_msg(gm12u320->udev,
+				usb_rcvbulkpipe(gm12u320->udev, DATA_RCV_EPT),
+				gm12u320->cmd_buf, READ_STATUS_SIZE, &len,
+				CMD_TIMEOUT);
+			if (ret || len != READ_STATUS_SIZE)
+				goto err;
+		}
+
+		/* Send draw command to device */
+		memcpy(gm12u320->cmd_buf, cmd_draw, CMD_SIZE);
+		ret = usb_bulk_msg(gm12u320->udev,
+			usb_sndbulkpipe(gm12u320->udev, DATA_SND_EPT),
+			gm12u320->cmd_buf, CMD_SIZE, &len, CMD_TIMEOUT);
+		if (ret || len != CMD_SIZE)
+			goto err;
+
+		/* Read status */
+		ret = usb_bulk_msg(gm12u320->udev,
+			usb_rcvbulkpipe(gm12u320->udev, DATA_RCV_EPT),
+			gm12u320->cmd_buf, READ_STATUS_SIZE, &len,
+			draw_status_timeout);
+		if (ret || len != READ_STATUS_SIZE)
+			goto err;
+
+		draw_status_timeout = CMD_TIMEOUT;
+		frame = !frame;
+
+		/*
+		 * We must draw a frame every 2s otherwise the projector
+		 * switches back to showing its logo.
+		 */
+		wait_event_timeout(gm12u320->fb_update.waitq,
+				   gm12u320_fb_update_ready(gm12u320),
+				   IDLE_TIMEOUT);
+	}
+	return;
+err:
+	/* Do not log errors caused by module unload or device unplug */
+	if (ret != -ECONNRESET && ret != -ESHUTDOWN)
+		dev_err(&gm12u320->udev->dev, "Frame update error: %d\n", ret);
+}
+
+static void gm12u320_fb_mark_dirty(struct drm_framebuffer *fb,
+				   struct drm_rect *dirty)
+{
+	struct gm12u320_device *gm12u320 = fb->dev->dev_private;
+	struct drm_framebuffer *old_fb = NULL;
+	bool wakeup = false;
+
+	mutex_lock(&gm12u320->fb_update.lock);
+
+	if (gm12u320->fb_update.fb != fb) {
+		old_fb = gm12u320->fb_update.fb;
+		drm_framebuffer_get(fb);
+		gm12u320->fb_update.fb = fb;
+		gm12u320->fb_update.rect = *dirty;
+		wakeup = true;
+	} else {
+		struct drm_rect *rect = &gm12u320->fb_update.rect;
+
+		rect->x1 = min(rect->x1, dirty->x1);
+		rect->y1 = min(rect->y1, dirty->y1);
+		rect->x2 = max(rect->x2, dirty->x2);
+		rect->y2 = max(rect->y2, dirty->y2);
+	}
+
+	mutex_unlock(&gm12u320->fb_update.lock);
+
+	if (wakeup)
+		wake_up(&gm12u320->fb_update.waitq);
+
+	if (old_fb)
+		drm_framebuffer_put(old_fb);
+}
+
+static void gm12u320_start_fb_update(struct gm12u320_device *gm12u320)
+{
+	mutex_lock(&gm12u320->fb_update.lock);
+	gm12u320->fb_update.run = true;
+	mutex_unlock(&gm12u320->fb_update.lock);
+
+	queue_work(gm12u320->fb_update.workq, &gm12u320->fb_update.work);
+}
+
+static void gm12u320_stop_fb_update(struct gm12u320_device *gm12u320)
+{
+	mutex_lock(&gm12u320->fb_update.lock);
+	gm12u320->fb_update.run = false;
+	mutex_unlock(&gm12u320->fb_update.lock);
+
+	wake_up(&gm12u320->fb_update.waitq);
+	cancel_work_sync(&gm12u320->fb_update.work);
+
+	mutex_lock(&gm12u320->fb_update.lock);
+	if (gm12u320->fb_update.fb) {
+		drm_framebuffer_put(gm12u320->fb_update.fb);
+		gm12u320->fb_update.fb = NULL;
+	}
+	mutex_unlock(&gm12u320->fb_update.lock);
+}
+
+static int gm12u320_set_ecomode(struct gm12u320_device *gm12u320)
+{
+	return gm12u320_misc_request(gm12u320, MISC_REQ_GET_SET_ECO_A,
+				     MISC_REQ_GET_SET_ECO_B, 0x01 /* set */,
+				     eco_mode ? 0x01 : 0x00, 0x00, 0x01);
+}
+
+/* ------------------------------------------------------------------ */
+/* gm12u320 connector						      */
+
+/*
+ * We use fake EDID info so that userspace know that it is dealing with
+ * an Acer projector, rather then listing this as an "unknown" monitor.
+ * Note this assumes this driver is only ever used with the Acer C120, if we
+ * add support for other devices the vendor and model should be parameterized.
+ */
+static struct edid gm12u320_edid = {
+	.header		= { 0x00, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x00 },
+	.mfg_id		= { 0x04, 0x72 },	/* "ACR" */
+	.prod_code	= { 0x20, 0xc1 },	/* C120h */
+	.serial		= 0xaa55aa55,
+	.mfg_week	= 1,
+	.mfg_year	= 16,
+	.version	= 1,			/* EDID 1.3 */
+	.revision	= 3,			/* EDID 1.3 */
+	.input		= 0x08,			/* Analog input */
+	.features	= 0x0a,			/* Pref timing in DTD 1 */
+	.standard_timings = { { 1, 1 }, { 1, 1 }, { 1, 1 }, { 1, 1 },
+			      { 1, 1 }, { 1, 1 }, { 1, 1 }, { 1, 1 } },
+	.detailed_timings = { {
+		.pixel_clock = 3383,
+		/* hactive = 848, hblank = 256 */
+		.data.pixel_data.hactive_lo = 0x50,
+		.data.pixel_data.hblank_lo = 0x00,
+		.data.pixel_data.hactive_hblank_hi = 0x31,
+		/* vactive = 480, vblank = 28 */
+		.data.pixel_data.vactive_lo = 0xe0,
+		.data.pixel_data.vblank_lo = 0x1c,
+		.data.pixel_data.vactive_vblank_hi = 0x10,
+		/* hsync offset 40 pw 128, vsync offset 1 pw 4 */
+		.data.pixel_data.hsync_offset_lo = 0x28,
+		.data.pixel_data.hsync_pulse_width_lo = 0x80,
+		.data.pixel_data.vsync_offset_pulse_width_lo = 0x14,
+		.data.pixel_data.hsync_vsync_offset_pulse_width_hi = 0x00,
+		/* Digital separate syncs, hsync+, vsync+ */
+		.data.pixel_data.misc = 0x1e,
+	}, {
+		.pixel_clock = 0,
+		.data.other_data.type = 0xfd, /* Monitor ranges */
+		.data.other_data.data.range.min_vfreq = 59,
+		.data.other_data.data.range.max_vfreq = 61,
+		.data.other_data.data.range.min_hfreq_khz = 29,
+		.data.other_data.data.range.max_hfreq_khz = 32,
+		.data.other_data.data.range.pixel_clock_mhz = 4, /* 40 MHz */
+		.data.other_data.data.range.flags = 0,
+		.data.other_data.data.range.formula.cvt = {
+			0xa0, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20 },
+	}, {
+		.pixel_clock = 0,
+		.data.other_data.type = 0xfc, /* Model string */
+		.data.other_data.data.str.str = {
+			'P', 'r', 'o', 'j', 'e', 'c', 't', 'o', 'r', '\n',
+			' ', ' ',  ' ' },
+	}, {
+		.pixel_clock = 0,
+		.data.other_data.type = 0xfe, /* Unspecified text / padding */
+		.data.other_data.data.str.str = {
+			'\n', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ',
+			' ', ' ',  ' ' },
+	} },
+	.checksum = 0x13,
+};
+
+static int gm12u320_conn_get_modes(struct drm_connector *connector)
+{
+	drm_connector_update_edid_property(connector, &gm12u320_edid);
+	return drm_add_edid_modes(connector, &gm12u320_edid);
+}
+
+static const struct drm_connector_helper_funcs gm12u320_conn_helper_funcs = {
+	.get_modes = gm12u320_conn_get_modes,
+};
+
+static const struct drm_connector_funcs gm12u320_conn_funcs = {
+	.fill_modes = drm_helper_probe_single_connector_modes,
+	.destroy = drm_connector_cleanup,
+	.reset = drm_atomic_helper_connector_reset,
+	.atomic_duplicate_state = drm_atomic_helper_connector_duplicate_state,
+	.atomic_destroy_state = drm_atomic_helper_connector_destroy_state,
+};
+
+static int gm12u320_conn_init(struct gm12u320_device *gm12u320)
+{
+	drm_connector_helper_add(&gm12u320->conn, &gm12u320_conn_helper_funcs);
+	return drm_connector_init(&gm12u320->dev, &gm12u320->conn,
+				  &gm12u320_conn_funcs, DRM_MODE_CONNECTOR_VGA);
+}
+
+/* ------------------------------------------------------------------ */
+/* gm12u320 (simple) display pipe				      */
+
+static void gm12u320_pipe_enable(struct drm_simple_display_pipe *pipe,
+				 struct drm_crtc_state *crtc_state,
+				 struct drm_plane_state *plane_state)
+{
+	struct gm12u320_device *gm12u320 = pipe->crtc.dev->dev_private;
+	struct drm_rect rect = { 0, 0, GM12U320_USER_WIDTH, GM12U320_HEIGHT };
+
+	gm12u320_fb_mark_dirty(plane_state->fb, &rect);
+	gm12u320_start_fb_update(gm12u320);
+	gm12u320->pipe_enabled = true;
+}
+
+static void gm12u320_pipe_disable(struct drm_simple_display_pipe *pipe)
+{
+	struct gm12u320_device *gm12u320 = pipe->crtc.dev->dev_private;
+
+	gm12u320_stop_fb_update(gm12u320);
+	gm12u320->pipe_enabled = false;
+}
+
+static void gm12u320_pipe_update(struct drm_simple_display_pipe *pipe,
+				 struct drm_plane_state *old_state)
+{
+	struct drm_plane_state *state = pipe->plane.state;
+	struct drm_crtc *crtc = &pipe->crtc;
+	struct drm_rect rect;
+
+	if (drm_atomic_helper_damage_merged(old_state, state, &rect))
+		gm12u320_fb_mark_dirty(pipe->plane.state->fb, &rect);
+
+	if (crtc->state->event) {
+		spin_lock_irq(&crtc->dev->event_lock);
+		drm_crtc_send_vblank_event(crtc, crtc->state->event);
+		crtc->state->event = NULL;
+		spin_unlock_irq(&crtc->dev->event_lock);
+	}
+}
+
+static const struct drm_simple_display_pipe_funcs gm12u320_pipe_funcs = {
+	.enable	    = gm12u320_pipe_enable,
+	.disable    = gm12u320_pipe_disable,
+	.update	    = gm12u320_pipe_update,
+};
+
+static const uint32_t gm12u320_pipe_formats[] = {
+	DRM_FORMAT_XRGB8888,
+};
+
+static const uint64_t gm12u320_pipe_modifiers[] = {
+	DRM_FORMAT_MOD_LINEAR,
+	DRM_FORMAT_MOD_INVALID
+};
+
+static void gm12u320_driver_release(struct drm_device *dev)
+{
+	struct gm12u320_device *gm12u320 = dev->dev_private;
+
+	gm12u320_usb_free(gm12u320);
+	drm_mode_config_cleanup(dev);
+	drm_dev_fini(dev);
+	kfree(gm12u320);
+}
+
+DEFINE_DRM_GEM_SHMEM_FOPS(gm12u320_fops);
+
+static struct drm_driver gm12u320_drm_driver = {
+	.driver_features = DRIVER_MODESET | DRIVER_GEM | DRIVER_ATOMIC,
+
+	.name		 = DRIVER_NAME,
+	.desc		 = DRIVER_DESC,
+	.date		 = DRIVER_DATE,
+	.major		 = DRIVER_MAJOR,
+	.minor		 = DRIVER_MINOR,
+
+	.release	 = gm12u320_driver_release,
+	.fops		 = &gm12u320_fops,
+	DRM_GEM_SHMEM_DRIVER_OPS,
+};
+
+static const struct drm_mode_config_funcs gm12u320_mode_config_funcs = {
+	.fb_create = drm_gem_fb_create_with_dirty,
+	.atomic_check = drm_atomic_helper_check,
+	.atomic_commit = drm_atomic_helper_commit,
+};
+
+static int gm12u320_usb_probe(struct usb_interface *interface,
+			      const struct usb_device_id *id)
+{
+	struct gm12u320_device *gm12u320;
+	struct drm_device *dev;
+	int ret;
+
+	/*
+	 * The gm12u320 presents itself to the system as 2 usb mass-storage
+	 * interfaces, we only care about / need the first one.
+	 */
+	if (interface->cur_altsetting->desc.bInterfaceNumber != 0)
+		return -ENODEV;
+
+	gm12u320 = kzalloc(sizeof(*gm12u320), GFP_KERNEL);
+	if (gm12u320 == NULL)
+		return -ENOMEM;
+
+	gm12u320->udev = interface_to_usbdev(interface);
+	INIT_WORK(&gm12u320->fb_update.work, gm12u320_fb_update_work);
+	mutex_init(&gm12u320->fb_update.lock);
+	init_waitqueue_head(&gm12u320->fb_update.waitq);
+
+	dev = &gm12u320->dev;
+	ret = drm_dev_init(dev, &gm12u320_drm_driver, &interface->dev);
+	if (ret) {
+		kfree(gm12u320);
+		return ret;
+	}
+	dev->dev_private = gm12u320;
+
+	drm_mode_config_init(dev);
+	dev->mode_config.min_width = GM12U320_USER_WIDTH;
+	dev->mode_config.max_width = GM12U320_USER_WIDTH;
+	dev->mode_config.min_height = GM12U320_HEIGHT;
+	dev->mode_config.max_height = GM12U320_HEIGHT;
+	dev->mode_config.funcs = &gm12u320_mode_config_funcs;
+
+	ret = gm12u320_usb_alloc(gm12u320);
+	if (ret)
+		goto err_put;
+
+	ret = gm12u320_set_ecomode(gm12u320);
+	if (ret)
+		goto err_put;
+
+	ret = gm12u320_conn_init(gm12u320);
+	if (ret)
+		goto err_put;
+
+	ret = drm_simple_display_pipe_init(&gm12u320->dev,
+					   &gm12u320->pipe,
+					   &gm12u320_pipe_funcs,
+					   gm12u320_pipe_formats,
+					   ARRAY_SIZE(gm12u320_pipe_formats),
+					   gm12u320_pipe_modifiers,
+					   &gm12u320->conn);
+	if (ret)
+		goto err_put;
+
+	drm_mode_config_reset(dev);
+
+	usb_set_intfdata(interface, dev);
+	ret = drm_dev_register(dev, 0);
+	if (ret)
+		goto err_put;
+
+	drm_fbdev_generic_setup(dev, dev->mode_config.preferred_depth);
+
+	return 0;
+
+err_put:
+	drm_dev_put(dev);
+	return ret;
+}
+
+static void gm12u320_usb_disconnect(struct usb_interface *interface)
+{
+	struct drm_device *dev = usb_get_intfdata(interface);
+	struct gm12u320_device *gm12u320 = dev->dev_private;
+
+	gm12u320_stop_fb_update(gm12u320);
+	drm_dev_unplug(dev);
+	drm_dev_put(dev);
+}
+
+#ifdef CONFIG_PM
+static int gm12u320_suspend(struct usb_interface *interface,
+			    pm_message_t message)
+{
+	struct drm_device *dev = usb_get_intfdata(interface);
+	struct gm12u320_device *gm12u320 = dev->dev_private;
+
+	if (gm12u320->pipe_enabled)
+		gm12u320_stop_fb_update(gm12u320);
+
+	return 0;
+}
+
+static int gm12u320_resume(struct usb_interface *interface)
+{
+	struct drm_device *dev = usb_get_intfdata(interface);
+	struct gm12u320_device *gm12u320 = dev->dev_private;
+
+	gm12u320_set_ecomode(gm12u320);
+	if (gm12u320->pipe_enabled)
+		gm12u320_start_fb_update(gm12u320);
+
+	return 0;
+}
+#endif
+
+static const struct usb_device_id id_table[] = {
+	{ USB_DEVICE(0x1de1, 0xc102) },
+	{},
+};
+MODULE_DEVICE_TABLE(usb, id_table);
+
+static struct usb_driver gm12u320_usb_driver = {
+	.name = "gm12u320",
+	.probe = gm12u320_usb_probe,
+	.disconnect = gm12u320_usb_disconnect,
+	.id_table = id_table,
+#ifdef CONFIG_PM
+	.suspend = gm12u320_suspend,
+	.resume = gm12u320_resume,
+	.reset_resume = gm12u320_resume,
+#endif
+};
+
+module_usb_driver(gm12u320_usb_driver);
+MODULE_AUTHOR("Hans de Goede <hdegoede@redhat.com>");
+MODULE_LICENSE("GPL");
-- 
cgit v1.2.3


From f848be467c98e726b130b1726706f6a84f85a046 Mon Sep 17 00:00:00 2001
From: Oded Gabbay <oded.gabbay@gmail.com>
Date: Thu, 4 Jul 2019 09:32:20 +0300
Subject: MAINTAINERS: update amdkfd maintainer (v3)

I'm leaving the role of amdkfd maintainer. Therefore, update the relevant
entry in the MAINTAINERS file with the name of the new maintainer.

Good Luck!

v3: update mailing list, file list (Alex)

Reviewed-by: Felix Kuehling <Felix.Kuehling@amd.com> (v2)
Signed-off-by: Oded Gabbay <oded.gabbay@gmail.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
---
 MAINTAINERS | 16 +++++-----------
 1 file changed, 5 insertions(+), 11 deletions(-)

(limited to 'MAINTAINERS')

diff --git a/MAINTAINERS b/MAINTAINERS
index d6600715a662..1347cc68fc11 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -821,17 +821,11 @@ F:	drivers/iommu/amd_iommu*.[ch]
 F:	include/linux/amd-iommu.h
 
 AMD KFD
-M:	Oded Gabbay <oded.gabbay@gmail.com>
-L:	dri-devel@lists.freedesktop.org
-T:	git git://people.freedesktop.org/~gabbayo/linux.git
-S:	Supported
-F:	drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd.c
-F:	drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd.h
-F:	drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gfx_v7.c
-F:	drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gfx_v8.c
-F:	drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gfx_v9.c
-F:	drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_fence.c
-F:	drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gpuvm.c
+M:	Felix Kuehling <Felix.Kuehling@amd.com>
+L:	amd-gfx@lists.freedesktop.org
+T:	git git://people.freedesktop.org/~agd5f/linux
+S:	Supported
+F:	drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd*.[ch]
 F:	drivers/gpu/drm/amd/amdkfd/
 F:	drivers/gpu/drm/amd/include/cik_structs.h
 F:	drivers/gpu/drm/amd/include/kgd_kfd_interface.h
-- 
cgit v1.2.3


From c0900eb8264c989878e475eb02a0d19eaeb62682 Mon Sep 17 00:00:00 2001
From: Neil Armstrong <narmstrong@baylibre.com>
Date: Thu, 8 Aug 2019 10:55:22 +0200
Subject: MAINTAINERS: Update with Amlogic DRM bindings converted as YAML

The amlogic,meson-dw-hdmi.txt and amlogic,meson-vpu.txt has been
converted to YAML schemas, update MAINTAINERS to match them again.

Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>
Reviewed-by: Maxime Jourdan <mjourdan@baylibre.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190808085522.21950-4-narmstrong@baylibre.com
---
 MAINTAINERS | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

(limited to 'MAINTAINERS')

diff --git a/MAINTAINERS b/MAINTAINERS
index 6fe3462a1f7a..67b75fc33c61 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -5336,8 +5336,8 @@ L:	linux-amlogic@lists.infradead.org
 W:	http://linux-meson.com/
 S:	Supported
 F:	drivers/gpu/drm/meson/
-F:	Documentation/devicetree/bindings/display/amlogic,meson-vpu.txt
-F:	Documentation/devicetree/bindings/display/amlogic,meson-dw-hdmi.txt
+F:	Documentation/devicetree/bindings/display/amlogic,meson-vpu.yaml
+F:	Documentation/devicetree/bindings/display/amlogic,meson-dw-hdmi.yaml
 F:	Documentation/gpu/meson.rst
 T:	git git://anongit.freedesktop.org/drm/drm-misc
 
-- 
cgit v1.2.3