FROMLIST: drm: bridge: analogix/dp: move hpd detect to connector detect function

This change just make a little clean to make code more like
drm core expect, move hdp detect code from bridge->enable(),
and place them into connector->detect().

Note: Gustavo Padovan try to remove the controller and phy
power on function in bind time at bellow commit:
	drm/exynos: do not start enabling DP at bind() phase

But for now the connector status don't hardcode to connected,
need to operate dp phy in .detect function, so we need to revert
parts if Gustavo Padovan's changes, add phy poweron
function in bind time.

(am from https://patchwork.kernel.org/patch/8312901/)

Change-Id: I0ed1be541210f85883477f1b2a88bd8d57e390d6
Tested-by: Javier Martinez Canillas <javier@osg.samsung.com>
Signed-off-by: Yakir Yang <ykk@rock-chips.com>

diff --git a/drivers/gpu/drm/bridge/analogix/analogix_dp_core.c b/drivers/gpu/drm/bridge/analogix/analogix_dp_core.c
index 13986b7b9a612a61eef65ab24b3a1c74d0191ead..cfdf69518ec7c819d638461c4a4f8124b7434678 100644 (file)
--- a/drivers/gpu/drm/bridge/analogix/analogix_dp_core.c
+++ b/drivers/gpu/drm/bridge/analogix/analogix_dp_core.c
@@ -904,12 +904,6 @@ static void analogix_dp_commit(struct analogix_dp_device *dp)
                        DRM_ERROR("failed to disable the panel\n");
        }
 
-       ret = analogix_dp_detect_hpd(dp);
-       if (ret) {
-               /* Cable has been disconnected, we're done */
-               return;
-       }
-
        ret = analogix_dp_handle_edid(dp);
        if (ret) {
                dev_err(dp->dev, "unable to handle edid\n");
@@ -972,6 +966,11 @@ static const struct drm_connector_helper_funcs analogix_dp_connector_helper_func
 enum drm_connector_status
 analogix_dp_detect(struct drm_connector *connector, bool force)
 {
+       struct analogix_dp_device *dp = to_dp(connector);
+
+       if (analogix_dp_detect_hpd(dp))
+               return connector_status_disconnected;
+
        return connector_status_connected;
 }
 
@@ -1051,13 +1050,6 @@ static void analogix_dp_bridge_enable(struct drm_bridge *bridge)
 
        pm_runtime_get_sync(dp->dev);
 
-       if (dp->plat_data->panel) {
-               if (drm_panel_prepare(dp->plat_data->panel)) {
-                       DRM_ERROR("failed to setup the panel\n");
-                       return;
-               }
-       }
-
        if (dp->plat_data->power_on)
                dp->plat_data->power_on(dp->plat_data);
 
@@ -1090,11 +1082,6 @@ static void analogix_dp_bridge_disable(struct drm_bridge *bridge)
        if (dp->plat_data->power_off)
                dp->plat_data->power_off(dp->plat_data);
 
-       if (dp->plat_data->panel) {
-               if (drm_panel_unprepare(dp->plat_data->panel))
-                       DRM_ERROR("failed to turnoff the panel\n");
-       }
-
        pm_runtime_put_sync(dp->dev);
 
        dp->dpms_mode = DRM_MODE_DPMS_OFF;
@@ -1352,6 +1339,15 @@ int analogix_dp_bind(struct device *dev, struct drm_device *drm_dev,
 
        pm_runtime_enable(dev);
 
+       phy_power_on(dp->phy);
+
+       if (dp->plat_data->panel) {
+               if (drm_panel_prepare(dp->plat_data->panel)) {
+                       DRM_ERROR("failed to setup the panel\n");
+                       return -EBUSY;
+               }
+       }
+
        ret = devm_request_irq(&pdev->dev, dp->irq, analogix_dp_irq_handler,
                               irq_flags, "analogix-dp", dp);
        if (ret) {
@@ -1385,6 +1381,12 @@ void analogix_dp_unbind(struct device *dev, struct device *master,
        struct analogix_dp_device *dp = dev_get_drvdata(dev);
 
        analogix_dp_bridge_disable(dp->bridge);
+
+       if (dp->plat_data->panel) {
+               if (drm_panel_unprepare(dp->plat_data->panel))
+                       DRM_ERROR("failed to turnoff the panel\n");
+       }
+
        pm_runtime_disable(dev);
 }
 EXPORT_SYMBOL_GPL(analogix_dp_unbind);