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
