Hi Heiko,
On 2025/1/31 4:33, Heiko Stübner wrote:
Hi Damon,
Am Donnerstag, 23. Januar 2025, 11:07:41 MEZ schrieb Damon Ding:
Move drm_of_find_panel_or_bridge() a little later and combine it with
component_add() into a new function rockchip_dp_link_panel(). The function
will serve as done_probing() callback of devm_of_dp_aux_populate_bus(),
aiding to support for obtaining the eDP panel via the DP AUX bus.
If failed to get the panel from the DP AUX bus, it will then try the other
way to get panel information through the platform bus.
Signed-off-by: Damon Ding <damon.ding@xxxxxxxxxxxxxx>
---
@@ -450,9 +461,17 @@ static int rockchip_dp_probe(struct platform_device *pdev)
if (IS_ERR(dp->adp))
return PTR_ERR(dp->adp);
- ret = component_add(dev, &rockchip_dp_component_ops);
- if (ret)
- return ret;
+ ret = devm_of_dp_aux_populate_bus(analogix_dp_get_aux(dp->adp), rockchip_dp_link_panel);
This causes an undefined-reference error, so you probably need something like:
diff --git a/drivers/gpu/drm/rockchip/Kconfig b/drivers/gpu/drm/rockchip/Kconfig
index f9cbbb40b36f..fa946a809858 100644
--- a/drivers/gpu/drm/rockchip/Kconfig
+++ b/drivers/gpu/drm/rockchip/Kconfig
@@ -8,6 +8,7 @@ config DRM_ROCKCHIP
select DRM_PANEL
select VIDEOMODE_HELPERS
select DRM_ANALOGIX_DP if ROCKCHIP_ANALOGIX_DP
+ select DRM_DISPLAY_DP_AUX_BUS if ROCKCHIP_ANALOGIX_DP
select DRM_DW_HDMI if ROCKCHIP_DW_HDMI
select DRM_DW_HDMI_QP if ROCKCHIP_DW_HDMI_QP
select DRM_DW_MIPI_DSI if ROCKCHIP_DW_MIPI_DSI
Yeah, I will add a new separate commit to do it in the next version.
Best regards
Damon
