The OnSemi FIN3385 Parallel-to-LVDS encoder has a dedicated input line to
select input pixel data sampling edge. Add DT property "pixelclk-active",
same as the one used by display timings, and configure bus flags based on
this DT property.
Signed-off-by: Marek Vasut <marex@xxxxxxx>
Cc: Alexandre Torgue <alexandre.torgue@xxxxxx>
Cc: Andrzej Hajda <a.hajda@xxxxxxxxxxx>
Cc: Antonio Borneo <antonio.borneo@xxxxxx>
Cc: Benjamin Gaignard <benjamin.gaignard@xxxxxx>
Cc: Biju Das <biju.das.jz@xxxxxxxxxxxxxx>
Cc: Laurent Pinchart <laurent.pinchart@xxxxxxxxxxxxxxxx>
Cc: Maxime Coquelin <mcoquelin.stm32@xxxxxxxxx>
Cc: Philippe Cornu <philippe.cornu@xxxxxx>
Cc: Sam Ravnborg <sam@xxxxxxxxxxxx>
Cc: Vincent Abriou <vincent.abriou@xxxxxx>
Cc: Yannick Fertre <yannick.fertre@xxxxxx>
Cc: linux-arm-kernel@xxxxxxxxxxxxxxxxxxx
Cc: linux-stm32@xxxxxxxxxxxxxxxxxxxxxxxxxxxx
To: dri-devel@xxxxxxxxxxxxxxxxxxxxx
---
drivers/gpu/drm/bridge/lvds-codec.c | 9 +++++++++
1 file changed, 9 insertions(+)
diff --git a/drivers/gpu/drm/bridge/lvds-codec.c b/drivers/gpu/drm/bridge/lvds-codec.c
index f52ccffc1bd1..bc941d4fb5b9 100644
--- a/drivers/gpu/drm/bridge/lvds-codec.c
+++ b/drivers/gpu/drm/bridge/lvds-codec.c
@@ -19,6 +19,7 @@ struct lvds_codec {
struct device *dev;
struct drm_bridge bridge;
struct drm_bridge *panel_bridge;
+ struct drm_bridge_timings timings;
struct regulator *vcc;
struct gpio_desc *powerdown_gpio;
u32 connector_type;
@@ -80,6 +81,7 @@ static int lvds_codec_probe(struct platform_device *pdev)
struct device_node *panel_node;
struct drm_panel *panel;
struct lvds_codec *lvds_codec;
+ u32 val;
int ret;
lvds_codec = devm_kzalloc(dev, sizeof(*lvds_codec), GFP_KERNEL);
@@ -124,6 +126,12 @@ static int lvds_codec_probe(struct platform_device *pdev)
if (IS_ERR(lvds_codec->panel_bridge))
return PTR_ERR(lvds_codec->panel_bridge);
+ if (!of_property_read_u32(dev->of_node, "pixelclk-active", &val)) {
+ lvds_codec->timings.input_bus_flags = val ?
+ DRM_BUS_FLAG_PIXDATA_SAMPLE_NEGEDGE :
+ DRM_BUS_FLAG_PIXDATA_SAMPLE_POSEDGE;
+ }
+
/*
* The panel_bridge bridge is attached to the panel's of_node,
* but we need a bridge attached to our of_node for our user
@@ -131,6 +139,7 @@ static int lvds_codec_probe(struct platform_device *pdev)
*/
lvds_codec->bridge.of_node = dev->of_node;
lvds_codec->bridge.funcs = &funcs;
+ lvds_codec->bridge.timings = &lvds_codec->timings;
drm_bridge_add(&lvds_codec->bridge);
platform_set_drvdata(pdev, lvds_codec);
--
2.28.0
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