Merge tag 'drm-next-2018-12-14' of git://anongit.freedesktop.org/drm/drm

Pull drm updates from Dave Airlie:
 "Core:
   - shared fencing staging removal
   - drop transactional atomic helpers and move helpers to new location
   - DP/MST atomic cleanup
   - Leasing cleanups and drop EXPORT_SYMBOL
   - Convert drivers to atomic helpers and generic fbdev.
   - removed deprecated obj_ref/unref in favour of get/put
   - Improve dumb callback documentation
   - MODESET_LOCK_BEGIN/END helpers

  panels:
   - CDTech panels, Banana Pi Panel, DLC1010GIG,
   - Olimex LCD-O-LinuXino, Samsung S6D16D0, Truly NT35597 WQXGA,
   - Himax HX8357D, simulated RTSM AEMv8.
   - GPD Win2 panel
   - AUO G101EVN010

  vgem:
   - render node support

  ttm:
   - move global init out of drivers
   - fix LRU handling for ghost objects
   - Support for simultaneous submissions to multiple engines

  scheduler:
   - timeout/fault handling changes to help GPU recovery
   - helpers for hw with preemption support

  i915:
   - Scaler/Watermark fixes
   - DP MST + powerwell fixes
   - PSR fixes
   - Break long get/put shmemfs pages
   - Icelake fixes
   - Icelake DSI video mode enablement
   - Engine workaround improvements

  amdgpu:
   - freesync support
   - GPU reset enabled on CI, VI, SOC15 dGPUs
   - ABM support in DC
   - KFD support for vega12/polaris12
   - SDMA paging queue on vega
   - More amdkfd code sharing
   - DCC scanout on GFX9
   - DC kerneldoc
   - Updated SMU firmware for GFX8 chips
   - XGMI PSP + hive reset support
   - GPU reset
   - DC trace support
   - Powerplay updates for newer Polaris
   - Cursor plane update fast path
   - kfd dma-buf support

  virtio-gpu:
   - add EDID support

  vmwgfx:
   - pageflip with damage support

  nouveau:
   - Initial Turing TU104/TU106 modesetting support

  msm:
   - a2xx gpu support for apq8060 and imx5
   - a2xx gpummu support
   - mdp4 display support for apq8060
   - DPU fixes and cleanups
   - enhanced profiling support
   - debug object naming interface
   - get_iova/page pinning decoupling

  tegra:
   - Tegra194 host1x, VIC and display support enabled
   - Audio over HDMI for Tegra186 and Tegra194

  exynos:
   - DMA/IOMMU refactoring
   - plane alpha + blend mode support
   - Color format fixes for mixer driver

  rcar-du:
   - R8A7744 and R8A77470 support
   - R8A77965 LVDS support

  imx:
   - fbdev emulation fix
   - multi-tiled scalling fixes
   - SPDX identifiers

  rockchip
   - dw_hdmi support
   - dw-mipi-dsi + dual dsi support
   - mailbox read size fix

  qxl:
   - fix cursor pinning

  vc4:
   - YUV support (scaling + cursor)

  v3d:
   - enable TFU (Texture Formatting Unit)

  mali-dp:
   - add support for linear tiled formats

  sun4i:
   - Display Engine 3 support
   - H6 DE3 mixer 0 support
   - H6 display engine support
   - dw-hdmi support
   - H6 HDMI phy support
   - implicit fence waiting
   - BGRX8888 support

  meson:
   - Overlay plane support
   - implicit fence waiting
   - HDMI 1.4 4k modes

  bridge:
   - i2c fixes for sii902x"

* tag 'drm-next-2018-12-14' of git://anongit.freedesktop.org/drm/drm: (1403 commits)
  drm/amd/display: Add fast path for cursor plane updates
  drm/amdgpu: Enable GPU recovery by default for CI
  drm/amd/display: Fix duplicating scaling/underscan connector state
  drm/amd/display: Fix unintialized max_bpc state values
  Revert "drm/amd/display: Set RMX_ASPECT as default"
  drm/amdgpu: Fix stub function name
  drm/msm/dpu: Fix clock issue after bind failure
  drm/msm/dpu: Clean up dpu_media_info.h static inline functions
  drm/msm/dpu: Further cleanups for static inline functions
  drm/msm/dpu: Cleanup the debugfs functions
  drm/msm/dpu: Remove dpu_irq and unused functions
  drm/msm: Make irq_postinstall optional
  drm/msm/dpu: Cleanup callers of dpu_hw_blk_init
  drm/msm/dpu: Remove unused functions
  drm/msm/dpu: Remove dpu_crtc_is_enabled()
  drm/msm/dpu: Remove dpu_crtc_get_mixer_height
  drm/msm/dpu: Remove dpu_dbg
  drm/msm: dpu: Remove crtc_lock
  drm/msm: dpu: Remove vblank_requested flag from dpu_crtc
  drm/msm: dpu: Separate crtc assignment from vblank enable
  ...

1 files changed, 330 insertions, 0 deletions

diff --git a/drivers/gpu/drm/panel/panel-olimex-lcd-olinuxino.c b/drivers/gpu/drm/panel/panel-olimex-lcd-olinuxino.c
new file mode 100644
index 000000000000..5e8d4523e9ed
--- /dev/null
+++ b/drivers/gpu/drm/panel/panel-olimex-lcd-olinuxino.c
@@ -0,0 +1,330 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * LCD-OLinuXino support for panel driver
+ *
+ * Copyright (C) 2018 Olimex Ltd.
+ *   Author: Stefan Mavrodiev <stefan@olimex.com>
+ */
+
+#include <linux/backlight.h>
+#include <linux/crc32.h>
+#include <linux/gpio/consumer.h>
+#include <linux/i2c.h>
+#include <linux/module.h>
+#include <linux/mutex.h>
+#include <linux/of.h>
+#include <linux/regulator/consumer.h>
+
+#include <drm/drm_modes.h>
+#include <drm/drm_panel.h>
+#include <drm/drmP.h>
+
+#include <video/videomode.h>
+#include <video/display_timing.h>
+
+#define LCD_OLINUXINO_HEADER_MAGIC	0x4F4CB727
+#define LCD_OLINUXINO_DATA_LEN		256
+
+struct lcd_olinuxino_mode {
+	u32 pixelclock;
+	u32 hactive;
+	u32 hfp;
+	u32 hbp;
+	u32 hpw;
+	u32 vactive;
+	u32 vfp;
+	u32 vbp;
+	u32 vpw;
+	u32 refresh;
+	u32 flags;
+};
+
+struct lcd_olinuxino_info {
+	char name[32];
+	u32 width_mm;
+	u32 height_mm;
+	u32 bpc;
+	u32 bus_format;
+	u32 bus_flag;
+} __attribute__((__packed__));
+
+struct lcd_olinuxino_eeprom {
+	u32 header;
+	u32 id;
+	char revision[4];
+	u32 serial;
+	struct lcd_olinuxino_info info;
+	u32 num_modes;
+	u8 reserved[180];
+	u32 checksum;
+} __attribute__((__packed__));
+
+struct lcd_olinuxino {
+	struct drm_panel panel;
+	struct device *dev;
+	struct i2c_client *client;
+	struct mutex mutex;
+
+	bool prepared;
+	bool enabled;
+
+	struct backlight_device *backlight;
+	struct regulator *supply;
+	struct gpio_desc *enable_gpio;
+
+	struct lcd_olinuxino_eeprom eeprom;
+};
+
+static inline struct lcd_olinuxino *to_lcd_olinuxino(struct drm_panel *panel)
+{
+	return container_of(panel, struct lcd_olinuxino, panel);
+}
+
+static int lcd_olinuxino_disable(struct drm_panel *panel)
+{
+	struct lcd_olinuxino *lcd = to_lcd_olinuxino(panel);
+
+	if (!lcd->enabled)
+		return 0;
+
+	backlight_disable(lcd->backlight);
+
+	lcd->enabled = false;
+
+	return 0;
+}
+
+static int lcd_olinuxino_unprepare(struct drm_panel *panel)
+{
+	struct lcd_olinuxino *lcd = to_lcd_olinuxino(panel);
+
+	if (!lcd->prepared)
+		return 0;
+
+	gpiod_set_value_cansleep(lcd->enable_gpio, 0);
+	regulator_disable(lcd->supply);
+
+	lcd->prepared = false;
+
+	return 0;
+}
+
+static int lcd_olinuxino_prepare(struct drm_panel *panel)
+{
+	struct lcd_olinuxino *lcd = to_lcd_olinuxino(panel);
+	int ret;
+
+	if (lcd->prepared)
+		return 0;
+
+	ret = regulator_enable(lcd->supply);
+	if (ret < 0)
+		return ret;
+
+	gpiod_set_value_cansleep(lcd->enable_gpio, 1);
+	lcd->prepared = true;
+
+	return 0;
+}
+
+static int lcd_olinuxino_enable(struct drm_panel *panel)
+{
+	struct lcd_olinuxino *lcd = to_lcd_olinuxino(panel);
+
+	if (lcd->enabled)
+		return 0;
+
+	backlight_enable(lcd->backlight);
+
+	lcd->enabled = true;
+
+	return 0;
+}
+
+static int lcd_olinuxino_get_modes(struct drm_panel *panel)
+{
+	struct lcd_olinuxino *lcd = to_lcd_olinuxino(panel);
+	struct drm_connector *connector = lcd->panel.connector;
+	struct lcd_olinuxino_info *lcd_info = &lcd->eeprom.info;
+	struct drm_device *drm = lcd->panel.drm;
+	struct lcd_olinuxino_mode *lcd_mode;
+	struct drm_display_mode *mode;
+	u32 i, num = 0;
+
+	for (i = 0; i < lcd->eeprom.num_modes; i++) {
+		lcd_mode = (struct lcd_olinuxino_mode *)
+			   &lcd->eeprom.reserved[i * sizeof(*lcd_mode)];
+
+		mode = drm_mode_create(drm);
+		if (!mode) {
+			dev_err(drm->dev, "failed to add mode %ux%u@%u\n",
+				lcd_mode->hactive,
+				lcd_mode->vactive,
+				lcd_mode->refresh);
+				continue;
+		}
+
+		mode->clock = lcd_mode->pixelclock;
+		mode->hdisplay = lcd_mode->hactive;
+		mode->hsync_start = lcd_mode->hactive + lcd_mode->hfp;
+		mode->hsync_end = lcd_mode->hactive + lcd_mode->hfp +
+				  lcd_mode->hpw;
+		mode->htotal = lcd_mode->hactive + lcd_mode->hfp +
+			       lcd_mode->hpw + lcd_mode->hbp;
+		mode->vdisplay = lcd_mode->vactive;
+		mode->vsync_start = lcd_mode->vactive + lcd_mode->vfp;
+		mode->vsync_end = lcd_mode->vactive + lcd_mode->vfp +
+				  lcd_mode->vpw;
+		mode->vtotal = lcd_mode->vactive + lcd_mode->vfp +
+			       lcd_mode->vpw + lcd_mode->vbp;
+		mode->vrefresh = lcd_mode->refresh;
+
+		/* Always make the first mode preferred */
+		if (i == 0)
+			mode->type |= DRM_MODE_TYPE_PREFERRED;
+		mode->type |= DRM_MODE_TYPE_DRIVER;
+
+		drm_mode_set_name(mode);
+		drm_mode_probed_add(connector, mode);
+
+		num++;
+	}
+
+	memcpy(connector->display_info.name, lcd_info->name, 32);
+	connector->display_info.width_mm = lcd_info->width_mm;
+	connector->display_info.height_mm = lcd_info->height_mm;
+	connector->display_info.bpc = lcd_info->bpc;
+
+	if (lcd_info->bus_format)
+		drm_display_info_set_bus_formats(&connector->display_info,
+						 &lcd_info->bus_format, 1);
+	connector->display_info.bus_flags = lcd_info->bus_flag;
+
+	return num;
+}
+
+static const struct drm_panel_funcs lcd_olinuxino_funcs = {
+	.disable = lcd_olinuxino_disable,
+	.unprepare = lcd_olinuxino_unprepare,
+	.prepare = lcd_olinuxino_prepare,
+	.enable = lcd_olinuxino_enable,
+	.get_modes = lcd_olinuxino_get_modes,
+};
+
+static int lcd_olinuxino_probe(struct i2c_client *client,
+			       const struct i2c_device_id *id)
+{
+	struct device *dev = &client->dev;
+	struct lcd_olinuxino *lcd;
+	u32 checksum, i;
+	int ret = 0;
+
+	if (!i2c_check_functionality(client->adapter, I2C_FUNC_I2C |
+				     I2C_FUNC_SMBUS_READ_I2C_BLOCK))
+		return -ENODEV;
+
+	lcd = devm_kzalloc(dev, sizeof(*lcd), GFP_KERNEL);
+	if (!lcd)
+		return -ENOMEM;
+
+	i2c_set_clientdata(client, lcd);
+	lcd->dev = dev;
+	lcd->client = client;
+
+	mutex_init(&lcd->mutex);
+
+	/* Copy data into buffer */
+	for (i = 0; i < LCD_OLINUXINO_DATA_LEN; i += I2C_SMBUS_BLOCK_MAX) {
+		mutex_lock(&lcd->mutex);
+		ret = i2c_smbus_read_i2c_block_data(client,
+						    i,
+						    I2C_SMBUS_BLOCK_MAX,
+						    (u8 *)&lcd->eeprom + i);
+		mutex_unlock(&lcd->mutex);
+		if (ret < 0) {
+			dev_err(dev, "error reading from device at %02x\n", i);
+			return ret;
+		}
+	}
+
+	/* Check configuration checksum */
+	checksum = ~crc32(~0, (u8 *)&lcd->eeprom, 252);
+	if (checksum != lcd->eeprom.checksum) {
+		dev_err(dev, "configuration checksum does not match!\n");
+		return -EINVAL;
+	}
+
+	/* Check magic header */
+	if (lcd->eeprom.header != LCD_OLINUXINO_HEADER_MAGIC) {
+		dev_err(dev, "magic header does not match\n");
+		return -EINVAL;
+	}
+
+	dev_info(dev, "Detected %s, Rev. %s, Serial: %08x\n",
+		 lcd->eeprom.info.name,
+		 lcd->eeprom.revision,
+		 lcd->eeprom.serial);
+
+	/*
+	 * The eeprom can hold up to 4 modes.
+	 * If the stored value is bigger, overwrite it.
+	 */
+	if (lcd->eeprom.num_modes > 4) {
+		dev_warn(dev, "invalid number of modes, falling back to 4\n");
+		lcd->eeprom.num_modes = 4;
+	}
+
+	lcd->enabled = false;
+	lcd->prepared = false;
+
+	lcd->supply = devm_regulator_get(dev, "power");
+	if (IS_ERR(lcd->supply))
+		return PTR_ERR(lcd->supply);
+
+	lcd->enable_gpio = devm_gpiod_get(dev, "enable", GPIOD_OUT_LOW);
+	if (IS_ERR(lcd->enable_gpio))
+		return PTR_ERR(lcd->enable_gpio);
+
+	lcd->backlight = devm_of_find_backlight(dev);
+	if (IS_ERR(lcd->backlight))
+		return PTR_ERR(lcd->backlight);
+
+	drm_panel_init(&lcd->panel);
+	lcd->panel.dev = dev;
+	lcd->panel.funcs = &lcd_olinuxino_funcs;
+
+	return drm_panel_add(&lcd->panel);
+}
+
+static int lcd_olinuxino_remove(struct i2c_client *client)
+{
+	struct lcd_olinuxino *panel = i2c_get_clientdata(client);
+
+	drm_panel_remove(&panel->panel);
+
+	lcd_olinuxino_disable(&panel->panel);
+	lcd_olinuxino_unprepare(&panel->panel);
+
+	return 0;
+}
+
+static const struct of_device_id lcd_olinuxino_of_ids[] = {
+	{ .compatible = "olimex,lcd-olinuxino" },
+	{ }
+};
+MODULE_DEVICE_TABLE(of, lcd_olinuxino_of_ids);
+
+static struct i2c_driver lcd_olinuxino_driver = {
+	.driver = {
+		.name = "lcd_olinuxino",
+		.of_match_table = lcd_olinuxino_of_ids,
+	},
+	.probe = lcd_olinuxino_probe,
+	.remove = lcd_olinuxino_remove,
+};
+
+module_i2c_driver(lcd_olinuxino_driver);
+
+MODULE_AUTHOR("Stefan Mavrodiev <stefan@olimex.com>");
+MODULE_DESCRIPTION("LCD-OLinuXino driver");
+MODULE_LICENSE("GPL");