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

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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: Fabrizio Castro <fabrizio.castro@bp.renesas.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
[Fix pointer to int cast warning]
Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20191217230753.2999-1-laurent.pinchart+renesas@ideasonboard.com
This commit is contained in:
Fabrizio Castro
2019-12-18 01:07:53 +02:00
committed by Neil Armstrong
parent 0d60131a3b
commit e6f607bb2b
1 changed files with 16 additions and 3 deletions
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19
drivers/gpu/drm/bridge/lvds-codec.c
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@@ -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);