drm/bridge: analogix_dp: move platform and PHY power handling into runtime PM

Platform and PHY power isn't only required when the actual display data
stream is active, but may be required earlier to support AUX channel
transactions. Move them into the runtime PM calls, so they are properly
managed whenever various other parts of the driver need them to be active.
Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
Reviewed-by: Robert Foss <rfoss@kernel.org>
Tested-by: Heiko Stuebner <heiko@sntech.de>
Signed-off-by: Robert Foss <rfoss@kernel.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20240619182200.3752465-7-l.stach@pengutronix.de

drivers/gpu/drm/bridge/analogix/analogix_dp_core.c

@@ -1251,11 +1251,6 @@ static int analogix_dp_set_bridge(struct analogix_dp_device *dp)
 
 	pm_runtime_get_sync(dp->dev);
 
-	if (dp->plat_data->power_on)
-		dp->plat_data->power_on(dp->plat_data);
-
-	phy_power_on(dp->phy);
-
 	ret = analogix_dp_init_dp(dp);
 	if (ret)
 		goto out_dp_init;
@@ -1281,10 +1276,6 @@ static int analogix_dp_set_bridge(struct analogix_dp_device *dp)
 	return 0;
 
 out_dp_init:
-	phy_power_off(dp->phy);
-	if (dp->plat_data->power_off)
-		dp->plat_data->power_off(dp->plat_data);
-
 	pm_runtime_put_sync(dp->dev);
 
 	return ret;
@@ -1347,11 +1338,7 @@ static void analogix_dp_bridge_disable(struct drm_bridge *bridge)
 
 	disable_irq(dp->irq);
 
-	if (dp->plat_data->power_off)
-		dp->plat_data->power_off(dp->plat_data);
-
 	analogix_dp_set_analog_power_down(dp, POWER_ALL, 1);
-	phy_power_off(dp->phy);
 
 	pm_runtime_put_sync(dp->dev);
 
@@ -1705,6 +1692,11 @@ EXPORT_SYMBOL_GPL(analogix_dp_probe);
 
 int analogix_dp_suspend(struct analogix_dp_device *dp)
 {
+	phy_power_off(dp->phy);
+
+	if (dp->plat_data->power_off)
+		dp->plat_data->power_off(dp->plat_data);
+
 	clk_disable_unprepare(dp->clock);
 
 	return 0;
@@ -1721,6 +1713,11 @@ int analogix_dp_resume(struct analogix_dp_device *dp)
 		return ret;
 	}
 
+	if (dp->plat_data->power_on)
+		dp->plat_data->power_on(dp->plat_data);
+
+	phy_power_on(dp->phy);
+
 	return 0;
 }
 EXPORT_SYMBOL_GPL(analogix_dp_resume);