diff options
Diffstat (limited to 'drivers/gpu/drm/pl111')
-rw-r--r-- | drivers/gpu/drm/pl111/Kconfig | 3 | ||||
-rw-r--r-- | drivers/gpu/drm/pl111/Makefile | 4 | ||||
-rw-r--r-- | drivers/gpu/drm/pl111/pl111_connector.c | 126 | ||||
-rw-r--r-- | drivers/gpu/drm/pl111/pl111_debugfs.c | 6 | ||||
-rw-r--r-- | drivers/gpu/drm/pl111/pl111_display.c | 79 | ||||
-rw-r--r-- | drivers/gpu/drm/pl111/pl111_drm.h | 37 | ||||
-rw-r--r-- | drivers/gpu/drm/pl111/pl111_drv.c | 149 | ||||
-rw-r--r-- | drivers/gpu/drm/pl111/pl111_versatile.c | 270 | ||||
-rw-r--r-- | drivers/gpu/drm/pl111/pl111_versatile.h | 9 |
9 files changed, 479 insertions, 204 deletions
diff --git a/drivers/gpu/drm/pl111/Kconfig b/drivers/gpu/drm/pl111/Kconfig index bbfba87cd1a8..e5e2abd66491 100644 --- a/drivers/gpu/drm/pl111/Kconfig +++ b/drivers/gpu/drm/pl111/Kconfig @@ -6,7 +6,8 @@ config DRM_PL111 select DRM_KMS_HELPER select DRM_KMS_CMA_HELPER select DRM_GEM_CMA_HELPER - select DRM_PANEL + select DRM_BRIDGE + select DRM_PANEL_BRIDGE select VT_HW_CONSOLE_BINDING if FRAMEBUFFER_CONSOLE help Choose this option for DRM support for the PL111 CLCD controller. diff --git a/drivers/gpu/drm/pl111/Makefile b/drivers/gpu/drm/pl111/Makefile index f2874bbdaa14..9c5e8dba8ac6 100644 --- a/drivers/gpu/drm/pl111/Makefile +++ b/drivers/gpu/drm/pl111/Makefile @@ -1,6 +1,6 @@ # SPDX-License-Identifier: GPL-2.0 -pl111_drm-y += pl111_connector.o \ - pl111_display.o \ +pl111_drm-y += pl111_display.o \ + pl111_versatile.o \ pl111_drv.o pl111_drm-$(CONFIG_DEBUG_FS) += pl111_debugfs.o diff --git a/drivers/gpu/drm/pl111/pl111_connector.c b/drivers/gpu/drm/pl111/pl111_connector.c deleted file mode 100644 index d335f9a29ce4..000000000000 --- a/drivers/gpu/drm/pl111/pl111_connector.c +++ /dev/null @@ -1,126 +0,0 @@ -/* - * (C) COPYRIGHT 2012-2013 ARM Limited. All rights reserved. - * - * Parts of this file were based on sources as follows: - * - * Copyright (c) 2006-2008 Intel Corporation - * Copyright (c) 2007 Dave Airlie <airlied@linux.ie> - * Copyright (C) 2011 Texas Instruments - * - * This program is free software and is provided to you under the terms of the - * GNU General Public License version 2 as published by the Free Software - * Foundation, and any use by you of this program is subject to the terms of - * such GNU licence. - * - */ - -/** - * pl111_drm_connector.c - * Implementation of the connector functions for PL111 DRM - */ -#include <linux/amba/clcd-regs.h> -#include <linux/version.h> -#include <linux/shmem_fs.h> -#include <linux/dma-buf.h> - -#include <drm/drmP.h> -#include <drm/drm_atomic_helper.h> -#include <drm/drm_crtc_helper.h> -#include <drm/drm_of.h> -#include <drm/drm_panel.h> - -#include "pl111_drm.h" - -static void pl111_connector_destroy(struct drm_connector *connector) -{ - struct pl111_drm_connector *pl111_connector = - to_pl111_connector(connector); - - if (pl111_connector->panel) - drm_panel_detach(pl111_connector->panel); - - drm_connector_unregister(connector); - drm_connector_cleanup(connector); -} - -static enum drm_connector_status pl111_connector_detect(struct drm_connector - *connector, bool force) -{ - struct pl111_drm_connector *pl111_connector = - to_pl111_connector(connector); - - return (pl111_connector->panel ? - connector_status_connected : - connector_status_disconnected); -} - -static int pl111_connector_helper_get_modes(struct drm_connector *connector) -{ - struct pl111_drm_connector *pl111_connector = - to_pl111_connector(connector); - - if (!pl111_connector->panel) - return 0; - - return drm_panel_get_modes(pl111_connector->panel); -} - -const struct drm_connector_funcs connector_funcs = { - .fill_modes = drm_helper_probe_single_connector_modes, - .destroy = pl111_connector_destroy, - .detect = pl111_connector_detect, - .reset = drm_atomic_helper_connector_reset, - .atomic_duplicate_state = drm_atomic_helper_connector_duplicate_state, - .atomic_destroy_state = drm_atomic_helper_connector_destroy_state, -}; - -const struct drm_connector_helper_funcs connector_helper_funcs = { - .get_modes = pl111_connector_helper_get_modes, -}; - -/* Walks the OF graph to find the panel node and then asks DRM to look - * up the panel. - */ -static struct drm_panel *pl111_get_panel(struct device *dev) -{ - struct device_node *endpoint, *panel_node; - struct device_node *np = dev->of_node; - struct drm_panel *panel; - - endpoint = of_graph_get_next_endpoint(np, NULL); - if (!endpoint) { - dev_err(dev, "no endpoint to fetch panel\n"); - return NULL; - } - - /* don't proceed if we have an endpoint but no panel_node tied to it */ - panel_node = of_graph_get_remote_port_parent(endpoint); - of_node_put(endpoint); - if (!panel_node) { - dev_err(dev, "no valid panel node\n"); - return NULL; - } - - panel = of_drm_find_panel(panel_node); - of_node_put(panel_node); - - return panel; -} - -int pl111_connector_init(struct drm_device *dev) -{ - struct pl111_drm_dev_private *priv = dev->dev_private; - struct pl111_drm_connector *pl111_connector = &priv->connector; - struct drm_connector *connector = &pl111_connector->connector; - - drm_connector_init(dev, connector, &connector_funcs, - DRM_MODE_CONNECTOR_DPI); - drm_connector_helper_add(connector, &connector_helper_funcs); - - pl111_connector->panel = pl111_get_panel(dev->dev); - if (pl111_connector->panel) - drm_panel_attach(pl111_connector->panel, connector); - - return 0; -} - diff --git a/drivers/gpu/drm/pl111/pl111_debugfs.c b/drivers/gpu/drm/pl111/pl111_debugfs.c index 0d9dee199b2c..7ddc7e3b9e7d 100644 --- a/drivers/gpu/drm/pl111/pl111_debugfs.c +++ b/drivers/gpu/drm/pl111/pl111_debugfs.c @@ -22,8 +22,14 @@ static const struct { REGDEF(CLCD_TIM2), REGDEF(CLCD_TIM3), REGDEF(CLCD_UBAS), + REGDEF(CLCD_LBAS), REGDEF(CLCD_PL111_CNTL), REGDEF(CLCD_PL111_IENB), + REGDEF(CLCD_PL111_RIS), + REGDEF(CLCD_PL111_MIS), + REGDEF(CLCD_PL111_ICR), + REGDEF(CLCD_PL111_UCUR), + REGDEF(CLCD_PL111_LCUR), }; int pl111_debugfs_regs(struct seq_file *m, void *unused) diff --git a/drivers/gpu/drm/pl111/pl111_display.c b/drivers/gpu/drm/pl111/pl111_display.c index b58c988d9da0..06c4bf756b69 100644 --- a/drivers/gpu/drm/pl111/pl111_display.c +++ b/drivers/gpu/drm/pl111/pl111_display.c @@ -21,7 +21,6 @@ #include <linux/of_graph.h> #include <drm/drmP.h> -#include <drm/drm_panel.h> #include <drm/drm_gem_cma_helper.h> #include <drm/drm_gem_framebuffer_helper.h> #include <drm/drm_fb_cma_helper.h> @@ -94,7 +93,7 @@ static void pl111_display_enable(struct drm_simple_display_pipe *pipe, struct pl111_drm_dev_private *priv = drm->dev_private; const struct drm_display_mode *mode = &cstate->mode; struct drm_framebuffer *fb = plane->state->fb; - struct drm_connector *connector = &priv->connector.connector; + struct drm_connector *connector = priv->connector; u32 cntl; u32 ppl, hsw, hfp, hbp; u32 lpp, vsw, vfp, vbp; @@ -156,10 +155,8 @@ static void pl111_display_enable(struct drm_simple_display_pipe *pipe, writel(0, priv->regs + CLCD_TIM3); - drm_panel_prepare(priv->connector.panel); - - /* Enable and Power Up */ - cntl = CNTL_LCDEN | CNTL_LCDTFT | CNTL_LCDPWR | CNTL_LCDVCOMP(1); + /* Hard-code TFT panel */ + cntl = CNTL_LCDEN | CNTL_LCDTFT | CNTL_LCDVCOMP(1); /* Note that the the hardware's format reader takes 'r' from * the low bit, while DRM formats list channels from high bit @@ -202,9 +199,21 @@ static void pl111_display_enable(struct drm_simple_display_pipe *pipe, break; } - writel(cntl, priv->regs + CLCD_PL111_CNTL); + /* Power sequence: first enable and chill */ + writel(cntl, priv->regs + priv->ctrl); + + /* + * We expect this delay to stabilize the contrast + * voltage Vee as stipulated by the manual + */ + msleep(20); + + if (priv->variant_display_enable) + priv->variant_display_enable(drm, fb->format->format); - drm_panel_enable(priv->connector.panel); + /* Power Up */ + cntl |= CNTL_LCDPWR; + writel(cntl, priv->regs + priv->ctrl); drm_crtc_vblank_on(crtc); } @@ -214,15 +223,28 @@ void pl111_display_disable(struct drm_simple_display_pipe *pipe) struct drm_crtc *crtc = &pipe->crtc; struct drm_device *drm = crtc->dev; struct pl111_drm_dev_private *priv = drm->dev_private; + u32 cntl; drm_crtc_vblank_off(crtc); - drm_panel_disable(priv->connector.panel); + /* Power Down */ + cntl = readl(priv->regs + priv->ctrl); + if (cntl & CNTL_LCDPWR) { + cntl &= ~CNTL_LCDPWR; + writel(cntl, priv->regs + priv->ctrl); + } + + /* + * We expect this delay to stabilize the contrast voltage Vee as + * stipulated by the manual + */ + msleep(20); - /* Disable and Power Down */ - writel(0, priv->regs + CLCD_PL111_CNTL); + if (priv->variant_display_disable) + priv->variant_display_disable(drm); - drm_panel_unprepare(priv->connector.panel); + /* Disable */ + writel(0, priv->regs + priv->ctrl); clk_disable_unprepare(priv->clk); } @@ -260,7 +282,7 @@ int pl111_enable_vblank(struct drm_device *drm, unsigned int crtc) { struct pl111_drm_dev_private *priv = drm->dev_private; - writel(CLCD_IRQ_NEXTBASE_UPDATE, priv->regs + CLCD_PL111_IENB); + writel(CLCD_IRQ_NEXTBASE_UPDATE, priv->regs + priv->ienb); return 0; } @@ -269,7 +291,7 @@ void pl111_disable_vblank(struct drm_device *drm, unsigned int crtc) { struct pl111_drm_dev_private *priv = drm->dev_private; - writel(0, priv->regs + CLCD_PL111_IENB); + writel(0, priv->regs + priv->ienb); } static int pl111_display_prepare_fb(struct drm_simple_display_pipe *pipe, @@ -413,22 +435,6 @@ int pl111_display_init(struct drm_device *drm) struct device_node *endpoint; u32 tft_r0b0g0[3]; int ret; - static const u32 formats[] = { - DRM_FORMAT_ABGR8888, - DRM_FORMAT_XBGR8888, - DRM_FORMAT_ARGB8888, - DRM_FORMAT_XRGB8888, - DRM_FORMAT_BGR565, - DRM_FORMAT_RGB565, - DRM_FORMAT_ABGR1555, - DRM_FORMAT_XBGR1555, - DRM_FORMAT_ARGB1555, - DRM_FORMAT_XRGB1555, - DRM_FORMAT_ABGR4444, - DRM_FORMAT_XBGR4444, - DRM_FORMAT_ARGB4444, - DRM_FORMAT_XRGB4444, - }; endpoint = of_graph_get_next_endpoint(dev->of_node, NULL); if (!endpoint) @@ -444,21 +450,16 @@ int pl111_display_init(struct drm_device *drm) } of_node_put(endpoint); - if (tft_r0b0g0[0] != 0 || - tft_r0b0g0[1] != 8 || - tft_r0b0g0[2] != 16) { - dev_err(dev, "arm,pl11x,tft-r0g0b0-pads != [0,8,16] not yet supported\n"); - return -EINVAL; - } - ret = pl111_init_clock_divider(drm); if (ret) return ret; ret = drm_simple_display_pipe_init(drm, &priv->pipe, &pl111_display_funcs, - formats, ARRAY_SIZE(formats), - NULL, &priv->connector.connector); + priv->variant->formats, + priv->variant->nformats, + NULL, + priv->connector); if (ret) return ret; diff --git a/drivers/gpu/drm/pl111/pl111_drm.h b/drivers/gpu/drm/pl111/pl111_drm.h index 5c685bfc8fdc..440f53ebee8c 100644 --- a/drivers/gpu/drm/pl111/pl111_drm.h +++ b/drivers/gpu/drm/pl111/pl111_drm.h @@ -21,25 +21,43 @@ #include <drm/drm_gem.h> #include <drm/drm_simple_kms_helper.h> +#include <drm/drm_connector.h> +#include <drm/drm_encoder.h> +#include <drm/drm_panel.h> +#include <drm/drm_bridge.h> #include <linux/clk-provider.h> +#include <linux/interrupt.h> #define CLCD_IRQ_NEXTBASE_UPDATE BIT(2) struct drm_minor; -struct pl111_drm_connector { - struct drm_connector connector; - struct drm_panel *panel; +/** + * struct pl111_variant_data - encodes IP differences + * @name: the name of this variant + * @is_pl110: this is the early PL110 variant + * @formats: array of supported pixel formats on this variant + * @nformats: the length of the array of supported pixel formats + */ +struct pl111_variant_data { + const char *name; + bool is_pl110; + const u32 *formats; + unsigned int nformats; }; struct pl111_drm_dev_private { struct drm_device *drm; - struct pl111_drm_connector connector; + struct drm_connector *connector; + struct drm_panel *panel; + struct drm_bridge *bridge; struct drm_simple_display_pipe pipe; struct drm_fbdev_cma *fbdev; void *regs; + u32 ienb; + u32 ctrl; /* The pixel clock (a reference to our clock divider off of CLCDCLK). */ struct clk *clk; /* pl111's internal clock divider. */ @@ -48,20 +66,15 @@ struct pl111_drm_dev_private { * subsystem and pl111_display_enable(). */ spinlock_t tim2_lock; + const struct pl111_variant_data *variant; + void (*variant_display_enable) (struct drm_device *drm, u32 format); + void (*variant_display_disable) (struct drm_device *drm); }; -#define to_pl111_connector(x) \ - container_of(x, struct pl111_drm_connector, connector) - int pl111_display_init(struct drm_device *dev); int pl111_enable_vblank(struct drm_device *drm, unsigned int crtc); void pl111_disable_vblank(struct drm_device *drm, unsigned int crtc); irqreturn_t pl111_irq(int irq, void *data); -int pl111_connector_init(struct drm_device *dev); -int pl111_encoder_init(struct drm_device *dev); -int pl111_dumb_create(struct drm_file *file_priv, - struct drm_device *dev, - struct drm_mode_create_dumb *args); int pl111_debugfs_init(struct drm_minor *minor); #endif /* _PL111_DRM_H_ */ diff --git a/drivers/gpu/drm/pl111/pl111_drv.c b/drivers/gpu/drm/pl111/pl111_drv.c index 581c452cede1..201d57d5cb54 100644 --- a/drivers/gpu/drm/pl111/pl111_drv.c +++ b/drivers/gpu/drm/pl111/pl111_drv.c @@ -41,9 +41,6 @@ * - Fix race between setting plane base address and getting IRQ for * vsync firing the pageflip completion. * - * - Expose the correct set of formats we can support based on the - * "arm,pl11x,tft-r0g0b0-pads" DT property. - * * - Use the "max-memory-bandwidth" DT property to filter the * supported formats. * @@ -68,8 +65,12 @@ #include <drm/drm_gem_cma_helper.h> #include <drm/drm_gem_framebuffer_helper.h> #include <drm/drm_fb_cma_helper.h> +#include <drm/drm_of.h> +#include <drm/drm_bridge.h> +#include <drm/drm_panel.h> #include "pl111_drm.h" +#include "pl111_versatile.h" #define DRIVER_DESC "DRM module for PL111" @@ -83,6 +84,8 @@ static int pl111_modeset_init(struct drm_device *dev) { struct drm_mode_config *mode_config; struct pl111_drm_dev_private *priv = dev->dev_private; + struct drm_panel *panel; + struct drm_bridge *bridge; int ret = 0; drm_mode_config_init(dev); @@ -93,34 +96,43 @@ static int pl111_modeset_init(struct drm_device *dev) mode_config->min_height = 1; mode_config->max_height = 768; - ret = pl111_connector_init(dev); - if (ret) { - dev_err(dev->dev, "Failed to create pl111_drm_connector\n"); - goto out_config; - } - - /* Don't actually attach if we didn't find a drm_panel - * attached to us. This will allow a kernel to include both - * the fbdev pl111 driver and this one, and choose between - * them based on which subsystem has support for the panel. - */ - if (!priv->connector.panel) { - dev_info(dev->dev, - "Disabling due to lack of DRM panel device.\n"); - ret = -ENODEV; - goto out_config; + ret = drm_of_find_panel_or_bridge(dev->dev->of_node, + 0, 0, &panel, &bridge); + if (ret && ret != -ENODEV) + return ret; + if (panel) { + bridge = drm_panel_bridge_add(panel, + DRM_MODE_CONNECTOR_Unknown); + if (IS_ERR(bridge)) { + ret = PTR_ERR(bridge); + goto out_config; + } + /* + * TODO: when we are using a different bridge than a panel + * (such as a dumb VGA connector) we need to devise a different + * method to get the connector out of the bridge. + */ } ret = pl111_display_init(dev); if (ret != 0) { dev_err(dev->dev, "Failed to init display\n"); - goto out_config; + goto out_bridge; } + ret = drm_simple_display_pipe_attach_bridge(&priv->pipe, + bridge); + if (ret) + return ret; + + priv->bridge = bridge; + priv->panel = panel; + priv->connector = panel->connector; + ret = drm_vblank_init(dev, 1); if (ret != 0) { dev_err(dev->dev, "Failed to init vblank\n"); - goto out_config; + goto out_bridge; } drm_mode_config_reset(dev); @@ -132,6 +144,9 @@ static int pl111_modeset_init(struct drm_device *dev) goto finish; +out_bridge: + if (panel) + drm_panel_bridge_remove(bridge); out_config: drm_mode_config_cleanup(dev); finish: @@ -183,6 +198,7 @@ static int pl111_amba_probe(struct amba_device *amba_dev, { struct device *dev = &amba_dev->dev; struct pl111_drm_dev_private *priv; + struct pl111_variant_data *variant = id->data; struct drm_device *drm; int ret; @@ -196,6 +212,33 @@ static int pl111_amba_probe(struct amba_device *amba_dev, amba_set_drvdata(amba_dev, drm); priv->drm = drm; drm->dev_private = priv; + priv->variant = variant; + + /* + * The PL110 and PL111 variants have two registers + * swapped: interrupt enable and control. For this reason + * we use offsets that we can change per variant. + */ + if (variant->is_pl110) { + /* + * The ARM Versatile boards are even more special: + * their PrimeCell ID say they are PL110 but the + * control and interrupt enable registers are anyway + * swapped to the PL111 order so they are not following + * the PL110 datasheet. + */ + if (of_machine_is_compatible("arm,versatile-ab") || + of_machine_is_compatible("arm,versatile-pb")) { + priv->ienb = CLCD_PL111_IENB; + priv->ctrl = CLCD_PL111_CNTL; + } else { + priv->ienb = CLCD_PL110_IENB; + priv->ctrl = CLCD_PL110_CNTL; + } + } else { + priv->ienb = CLCD_PL111_IENB; + priv->ctrl = CLCD_PL111_CNTL; + } priv->regs = devm_ioremap_resource(dev, &amba_dev->res); if (IS_ERR(priv->regs)) { @@ -204,15 +247,19 @@ static int pl111_amba_probe(struct amba_device *amba_dev, } /* turn off interrupts before requesting the irq */ - writel(0, priv->regs + CLCD_PL111_IENB); + writel(0, priv->regs + priv->ienb); ret = devm_request_irq(dev, amba_dev->irq[0], pl111_irq, 0, - "pl111", priv); + variant->name, priv); if (ret != 0) { dev_err(dev, "%s failed irq %d\n", __func__, ret); return ret; } + ret = pl111_versatile_init(dev, priv); + if (ret) + goto dev_unref; + ret = pl111_modeset_init(drm); if (ret != 0) goto dev_unref; @@ -236,16 +283,70 @@ static int pl111_amba_remove(struct amba_device *amba_dev) drm_dev_unregister(drm); if (priv->fbdev) drm_fbdev_cma_fini(priv->fbdev); + if (priv->panel) + drm_panel_bridge_remove(priv->bridge); drm_mode_config_cleanup(drm); drm_dev_unref(drm); return 0; } -static struct amba_id pl111_id_table[] = { +/* + * This variant exist in early versions like the ARM Integrator + * and this version lacks the 565 and 444 pixel formats. + */ +static const u32 pl110_pixel_formats[] = { + DRM_FORMAT_ABGR8888, + DRM_FORMAT_XBGR8888, + DRM_FORMAT_ARGB8888, + DRM_FORMAT_XRGB8888, + DRM_FORMAT_ABGR1555, + DRM_FORMAT_XBGR1555, + DRM_FORMAT_ARGB1555, + DRM_FORMAT_XRGB1555, +}; + +static const struct pl111_variant_data pl110_variant = { + .name = "PL110", + .is_pl110 = true, + .formats = pl110_pixel_formats, + .nformats = ARRAY_SIZE(pl110_pixel_formats), +}; + +/* RealView, Versatile Express etc use this modern variant */ +static const u32 pl111_pixel_formats[] = { + DRM_FORMAT_ABGR8888, + DRM_FORMAT_XBGR8888, + DRM_FORMAT_ARGB8888, + DRM_FORMAT_XRGB8888, + DRM_FORMAT_BGR565, + DRM_FORMAT_RGB565, + DRM_FORMAT_ABGR1555, + DRM_FORMAT_XBGR1555, + DRM_FORMAT_ARGB1555, + DRM_FORMAT_XRGB1555, + DRM_FORMAT_ABGR4444, + DRM_FORMAT_XBGR4444, + DRM_FORMAT_ARGB4444, + DRM_FORMAT_XRGB4444, +}; + +static const struct pl111_variant_data pl111_variant = { + .name = "PL111", + .formats = pl111_pixel_formats, + .nformats = ARRAY_SIZE(pl111_pixel_formats), +}; + +static const struct amba_id pl111_id_table[] = { + { + .id = 0x00041110, + .mask = 0x000fffff, + .data = (void*)&pl110_variant, + }, { .id = 0x00041111, .mask = 0x000fffff, + .data = (void*)&pl111_variant, }, {0, 0}, }; diff --git a/drivers/gpu/drm/pl111/pl111_versatile.c b/drivers/gpu/drm/pl111/pl111_versatile.c new file mode 100644 index 000000000000..97d4af6925a3 --- /dev/null +++ b/drivers/gpu/drm/pl111/pl111_versatile.c @@ -0,0 +1,270 @@ +#include <linux/device.h> +#include <linux/of.h> +#include <linux/regmap.h> +#include <linux/mfd/syscon.h> +#include <linux/bitops.h> +#include <linux/module.h> +#include <drm/drmP.h> +#include "pl111_versatile.h" +#include "pl111_drm.h" + +static struct regmap *versatile_syscon_map; + +/* + * We detect the different syscon types from the compatible strings. + */ +enum versatile_clcd { + INTEGRATOR_CLCD_CM, + VERSATILE_CLCD, + REALVIEW_CLCD_EB, + REALVIEW_CLCD_PB1176, + REALVIEW_CLCD_PB11MP, + REALVIEW_CLCD_PBA8, + REALVIEW_CLCD_PBX, +}; + +static const struct of_device_id versatile_clcd_of_match[] = { + { + .compatible = "arm,core-module-integrator", + .data = (void *)INTEGRATOR_CLCD_CM, + }, + { + .compatible = "arm,versatile-sysreg", + .data = (void *)VERSATILE_CLCD, + }, + { + .compatible = "arm,realview-eb-syscon", + .data = (void *)REALVIEW_CLCD_EB, + }, + { + .compatible = "arm,realview-pb1176-syscon", + .data = (void *)REALVIEW_CLCD_PB1176, + }, + { + .compatible = "arm,realview-pb11mp-syscon", + .data = (void *)REALVIEW_CLCD_PB11MP, + }, + { + .compatible = "arm,realview-pba8-syscon", + .data = (void *)REALVIEW_CLCD_PBA8, + }, + { + .compatible = "arm,realview-pbx-syscon", + .data = (void *)REALVIEW_CLCD_PBX, + }, + {}, +}; + +/* + * Core module CLCD control on the Integrator/CP, bits + * 8 thru 19 of the CM_CONTROL register controls a bunch + * of CLCD settings. + */ +#define INTEGRATOR_HDR_CTRL_OFFSET 0x0C +#define INTEGRATOR_CLCD_LCDBIASEN BIT(8) +#define INTEGRATOR_CLCD_LCDBIASUP BIT(9) +#define INTEGRATOR_CLCD_LCDBIASDN BIT(10) +/* Bits 11,12,13 controls the LCD type */ +#define INTEGRATOR_CLCD_LCDMUX_MASK (BIT(11)|BIT(12)|BIT(13)) +#define INTEGRATOR_CLCD_LCDMUX_LCD24 BIT(11) +#define INTEGRATOR_CLCD_LCDMUX_VGA565 BIT(12) +#define INTEGRATOR_CLCD_LCDMUX_SHARP (BIT(11)|BIT(12)) +#define INTEGRATOR_CLCD_LCDMUX_VGA555 BIT(13) +#define INTEGRATOR_CLCD_LCDMUX_VGA24 (BIT(11)|BIT(12)|BIT(13)) +#define INTEGRATOR_CLCD_LCD0_EN BIT(14) +#define INTEGRATOR_CLCD_LCD1_EN BIT(15) +/* R/L flip on Sharp */ +#define INTEGRATOR_CLCD_LCD_STATIC1 BIT(16) +/* U/D flip on Sharp */ +#define INTEGRATOR_CLCD_LCD_STATIC2 BIT(17) +/* No connection on Sharp */ +#define INTEGRATOR_CLCD_LCD_STATIC BIT(18) +/* 0 = 24bit VGA, 1 = 18bit VGA */ +#define INTEGRATOR_CLCD_LCD_N24BITEN BIT(19) + +#define INTEGRATOR_CLCD_MASK (INTEGRATOR_CLCD_LCDBIASEN | \ + INTEGRATOR_CLCD_LCDBIASUP | \ + INTEGRATOR_CLCD_LCDBIASDN | \ + INTEGRATOR_CLCD_LCDMUX_MASK | \ + INTEGRATOR_CLCD_LCD0_EN | \ + INTEGRATOR_CLCD_LCD1_EN | \ + INTEGRATOR_CLCD_LCD_STATIC1 | \ + INTEGRATOR_CLCD_LCD_STATIC2 | \ + INTEGRATOR_CLCD_LCD_STATIC | \ + INTEGRATOR_CLCD_LCD_N24BITEN) + +static void pl111_integrator_enable(struct drm_device *drm, u32 format) +{ + u32 val; + + dev_info(drm->dev, "enable Integrator CLCD connectors\n"); + + /* FIXME: really needed? */ + val = INTEGRATOR_CLCD_LCD_STATIC1 | INTEGRATOR_CLCD_LCD_STATIC2 | + INTEGRATOR_CLCD_LCD0_EN | INTEGRATOR_CLCD_LCD1_EN; + + switch (format) { + case DRM_FORMAT_XBGR8888: + case DRM_FORMAT_XRGB8888: + break; + case DRM_FORMAT_BGR565: + case DRM_FORMAT_RGB565: + /* truecolor RGB565 */ + val |= INTEGRATOR_CLCD_LCDMUX_VGA565; + break; + case DRM_FORMAT_XBGR1555: + case DRM_FORMAT_XRGB1555: + /* Pseudocolor, RGB555, BGR555 */ + val |= INTEGRATOR_CLCD_LCDMUX_VGA555; + break; + default: + dev_err(drm->dev, "unhandled format on Integrator 0x%08x\n", + format); + break; + } + + regmap_update_bits(versatile_syscon_map, + INTEGRATOR_HDR_CTRL_OFFSET, + INTEGRATOR_CLCD_MASK, + val); +} + +/* + * This configuration register in the Versatile and RealView + * family is uniformly present but appears more and more + * unutilized starting with the RealView series. + */ +#define SYS_CLCD 0x50 +#define SYS_CLCD_MODE_MASK (BIT(0)|BIT(1)) +#define SYS_CLCD_MODE_888 0 +#define SYS_CLCD_MODE_5551 BIT(0) +#define SYS_CLCD_MODE_565_R_LSB BIT(1) +#define SYS_CLCD_MODE_565_B_LSB (BIT(0)|BIT(1)) +#define SYS_CLCD_CONNECTOR_MASK (BIT(2)|BIT(3)|BIT(4)|BIT(5)) +#define SYS_CLCD_NLCDIOON BIT(2) +#define SYS_CLCD_VDDPOSSWITCH BIT(3) +#define SYS_CLCD_PWR3V5SWITCH BIT(4) +#define SYS_CLCD_VDDNEGSWITCH BIT(5) + +static void pl111_versatile_disable(struct drm_device *drm) +{ + dev_info(drm->dev, "disable Versatile CLCD connectors\n"); + regmap_update_bits(versatile_syscon_map, + SYS_CLCD, + SYS_CLCD_CONNECTOR_MASK, + 0); +} + +static void pl111_versatile_enable(struct drm_device *drm, u32 format) +{ + u32 val = 0; + + dev_info(drm->dev, "enable Versatile CLCD connectors\n"); + + switch (format) { + case DRM_FORMAT_ABGR8888: + case DRM_FORMAT_XBGR8888: + case DRM_FORMAT_ARGB8888: + case DRM_FORMAT_XRGB8888: + val |= SYS_CLCD_MODE_888; + break; + case DRM_FORMAT_BGR565: + val |= SYS_CLCD_MODE_565_R_LSB; + break; + case DRM_FORMAT_RGB565: + val |= SYS_CLCD_MODE_565_B_LSB; + break; + case DRM_FORMAT_ABGR1555: + case DRM_FORMAT_XBGR1555: + case DRM_FORMAT_ARGB1555: + case DRM_FORMAT_XRGB1555: + val |= SYS_CLCD_MODE_5551; + break; + default: + dev_err(drm->dev, "unhandled format on Versatile 0x%08x\n", + format); + break; + } + + /* Set up the MUX */ + regmap_update_bits(versatile_syscon_map, + SYS_CLCD, + SYS_CLCD_MODE_MASK, + val); + + /* Then enable the display */ + regmap_update_bits(versatile_syscon_map, + SYS_CLCD, + SYS_CLCD_CONNECTOR_MASK, + SYS_CLCD_NLCDIOON | SYS_CLCD_PWR3V5SWITCH); +} + +static void pl111_realview_clcd_disable(struct drm_device *drm) +{ + dev_info(drm->dev, "disable RealView CLCD connectors\n"); + regmap_update_bits(versatile_syscon_map, + SYS_CLCD, + SYS_CLCD_CONNECTOR_MASK, + 0); +} + +static void pl111_realview_clcd_enable(struct drm_device *drm, u32 format) +{ + dev_info(drm->dev, "enable RealView CLCD connectors\n"); + regmap_update_bits(versatile_syscon_map, + SYS_CLCD, + SYS_CLCD_CONNECTOR_MASK, + SYS_CLCD_NLCDIOON | SYS_CLCD_PWR3V5SWITCH); +} + +int pl111_versatile_init(struct device *dev, struct pl111_drm_dev_private *priv) +{ + const struct of_device_id *clcd_id; + enum versatile_clcd versatile_clcd_type; + struct device_node *np; + struct regmap *map; + + np = of_find_matching_node_and_match(NULL, versatile_clcd_of_match, + &clcd_id); + if (!np) { + /* Non-ARM reference designs, just bail out */ + return 0; + } + versatile_clcd_type = (enum versatile_clcd)clcd_id->data; + + map = syscon_node_to_regmap(np); + if (IS_ERR(map)) { + dev_err(dev, "no Versatile syscon regmap\n"); + return PTR_ERR(map); + } + + switch (versatile_clcd_type) { + case INTEGRATOR_CLCD_CM: + versatile_syscon_map = map; + priv->variant_display_enable = pl111_integrator_enable; + dev_info(dev, "set up callbacks for Integrator PL110\n"); + break; + case VERSATILE_CLCD: + versatile_syscon_map = map; + priv->variant_display_enable = pl111_versatile_enable; + priv->variant_display_disable = pl111_versatile_disable; + dev_info(dev, "set up callbacks for Versatile PL110+\n"); + break; + case REALVIEW_CLCD_EB: + case REALVIEW_CLCD_PB1176: + case REALVIEW_CLCD_PB11MP: + case REALVIEW_CLCD_PBA8: + case REALVIEW_CLCD_PBX: + versatile_syscon_map = map; + priv->variant_display_enable = pl111_realview_clcd_enable; + priv->variant_display_disable = pl111_realview_clcd_disable; + dev_info(dev, "set up callbacks for RealView PL111\n"); + break; + default: + dev_info(dev, "unknown Versatile system controller\n"); + break; + } + + return 0; +} +EXPORT_SYMBOL_GPL(pl111_versatile_init); diff --git a/drivers/gpu/drm/pl111/pl111_versatile.h b/drivers/gpu/drm/pl111/pl111_versatile.h new file mode 100644 index 000000000000..41aa6d969dc6 --- /dev/null +++ b/drivers/gpu/drm/pl111/pl111_versatile.h @@ -0,0 +1,9 @@ +#include <linux/device.h> +#include "pl111_drm.h" + +#ifndef PL111_VERSATILE_H +#define PL111_VERSATILE_H + +int pl111_versatile_init(struct device *dev, struct pl111_drm_dev_private *priv); + +#endif |