From: Damon Ding Date: Mon, 10 Mar 2025 10:41:07 +0000 (+0800) Subject: drm/bridge: analogix_dp: Add support to get panel from the DP AUX bus X-Git-Tag: v6.16-rc1~33^2~25^2~56 X-Git-Url: https://git.kernel.dk/?a=commitdiff_plain;h=e5e9fa9f7aad4ad7eedb6359baea9193531bf4ac;p=linux-block.git drm/bridge: analogix_dp: Add support to get panel from the DP AUX bus The main modification is moving the DP AUX initialization from function analogix_dp_bind() to analogix_dp_probe(). In order to get the EDID of eDP panel during probing, it is also needed to advance PM operations to ensure that eDP controller and phy are prepared for AUX transmission. Signed-off-by: Damon Ding Reviewed-by: Dmitry Baryshkov Reviewed-by: Douglas Anderson Link: https://lore.kernel.org/r/20250310104114.2608063-7-damon.ding@rock-chips.com Signed-off-by: Dmitry Baryshkov --- diff --git a/drivers/gpu/drm/bridge/analogix/analogix_dp_core.c b/drivers/gpu/drm/bridge/analogix/analogix_dp_core.c index 8fdd03656934..84ad34f71244 100644 --- a/drivers/gpu/drm/bridge/analogix/analogix_dp_core.c +++ b/drivers/gpu/drm/bridge/analogix/analogix_dp_core.c @@ -1646,6 +1646,17 @@ analogix_dp_probe(struct device *dev, struct analogix_dp_plat_data *plat_data) goto err_disable_clk; } + dp->aux.name = "DP-AUX"; + dp->aux.transfer = analogix_dpaux_transfer; + dp->aux.dev = dp->dev; + drm_dp_aux_init(&dp->aux); + + pm_runtime_use_autosuspend(dp->dev); + pm_runtime_set_autosuspend_delay(dp->dev, 100); + ret = devm_pm_runtime_enable(dp->dev); + if (ret) + goto err_disable_clk; + return dp; err_disable_clk: @@ -1696,15 +1707,6 @@ int analogix_dp_bind(struct analogix_dp_device *dp, struct drm_device *drm_dev) dp->drm_dev = drm_dev; dp->encoder = dp->plat_data->encoder; - pm_runtime_use_autosuspend(dp->dev); - pm_runtime_set_autosuspend_delay(dp->dev, 100); - ret = devm_pm_runtime_enable(dp->dev); - if (ret) - return ret; - - dp->aux.name = "DP-AUX"; - dp->aux.transfer = analogix_dpaux_transfer; - dp->aux.dev = dp->dev; dp->aux.drm_dev = drm_dev; ret = drm_dp_aux_register(&dp->aux);