diff options
Diffstat (limited to 'drivers/gpu/drm/bridge/lvds-codec.c')
| -rw-r--r-- | drivers/gpu/drm/bridge/lvds-codec.c | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/drivers/gpu/drm/bridge/lvds-codec.c b/drivers/gpu/drm/bridge/lvds-codec.c index f991842a161f..702ea803a743 100644 --- a/drivers/gpu/drm/bridge/lvds-codec.c +++ b/drivers/gpu/drm/bridge/lvds-codec.c @@ -21,6 +21,7 @@ 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; @@ -119,6 +120,7 @@ static int lvds_codec_probe(struct platform_device *pdev) struct device_node *bus_node; struct drm_panel *panel; struct lvds_codec *lvds_codec; + u32 val; int ret; lvds_codec = devm_kzalloc(dev, sizeof(*lvds_codec), GFP_KERNEL); @@ -188,11 +190,24 @@ static int lvds_codec_probe(struct platform_device *pdev) } /* + * Encoder might sample data on different clock edge than the display, + * for example OnSemi FIN3385 has a dedicated strapping pin to select + * the sampling edge. + */ + if (lvds_codec->connector_type == DRM_MODE_CONNECTOR_LVDS && + !of_property_read_u32(dev->of_node, "pclk-sample", &val)) { + lvds_codec->timings.input_bus_flags = val ? + DRM_BUS_FLAG_PIXDATA_SAMPLE_POSEDGE : + DRM_BUS_FLAG_PIXDATA_SAMPLE_NEGEDGE; + } + + /* * 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 * to look up. */ lvds_codec->bridge.of_node = dev->of_node; + lvds_codec->bridge.timings = &lvds_codec->timings; drm_bridge_add(&lvds_codec->bridge); platform_set_drvdata(pdev, lvds_codec); |