Commit e6f607bb authored by Fabrizio Castro's avatar Fabrizio Castro Committed by Neil Armstrong
Browse files

drm/bridge: lvds-codec: Add "lvds-decoder" support 



Add support for transparent LVDS decoders by adding a new
compatible string ("lvds-decoder") to the driver.
This patch also adds member connector_type to struct lvds_codec,
and that's because LVDS decoders have a different connector type
from LVDS encoders. We fill this new member up with the data
matching the compatible string.

Signed-off-by: default avatarFabrizio Castro <fabrizio.castro@bp.renesas.com>
Reviewed-by: default avatarLaurent Pinchart <laurent.pinchart@ideasonboard.com>
[Fix pointer to int cast warning]
Signed-off-by: default avatarLaurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Signed-off-by: default avatarNeil Armstrong <narmstrong@baylibre.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20191217230753.2999-1-laurent.pinchart+renesas@ideasonboard.com
parent 0d60131a

drivers/gpu/drm/bridge/lvds-codec.c

+16 −3
Original line number Diff line number Diff line
@@ -7,6 +7,7 @@ 
#include <linux/gpio/consumer.h>

#include <linux/module.h>

#include <linux/of.h>

#include <linux/of_device.h>

#include <linux/of_graph.h>

#include <linux/platform_device.h>
@@ -17,6 +18,7 @@ struct lvds_codec { 
	struct drm_bridge bridge;

	struct drm_bridge *panel_bridge;

	struct gpio_desc *powerdown_gpio;

	u32 connector_type;

};



static int lvds_codec_attach(struct drm_bridge *bridge)
@@ -65,6 +67,7 @@ static int lvds_codec_probe(struct platform_device *pdev) 
	if (!lvds_codec)

		return -ENOMEM;



	lvds_codec->connector_type = (uintptr_t)of_device_get_match_data(dev);

	lvds_codec->powerdown_gpio = devm_gpiod_get_optional(dev, "powerdown",

							     GPIOD_OUT_HIGH);

	if (IS_ERR(lvds_codec->powerdown_gpio)) {
@@ -105,7 +108,7 @@ static int lvds_codec_probe(struct platform_device *pdev) 


	lvds_codec->panel_bridge =

		devm_drm_panel_bridge_add_typed(dev, panel,

						DRM_MODE_CONNECTOR_LVDS);

						lvds_codec->connector_type);

	if (IS_ERR(lvds_codec->panel_bridge))

		return PTR_ERR(lvds_codec->panel_bridge);
@@ -133,8 +136,18 @@ static int lvds_codec_remove(struct platform_device *pdev) 
}



static const struct of_device_id lvds_codec_match[] = {

	{ .compatible = "lvds-encoder" },

	{ .compatible = "thine,thc63lvdm83d" },

	{

		.compatible = "lvds-decoder",

		.data = (void *)DRM_MODE_CONNECTOR_DPI,

	},

	{

		.compatible = "lvds-encoder",

		.data = (void *)DRM_MODE_CONNECTOR_LVDS,

	},

	{

		.compatible = "thine,thc63lvdm83d",

		.data = (void *)DRM_MODE_CONNECTOR_LVDS,

	},

	{},

};

MODULE_DEVICE_TABLE(of, lvds_codec_match);

CRA Git | Maintained and supported by SUSTech CRA and CCSE