Merge "drm/bridge: add pm suspend/resume function for anx7625" (98ef65e5) · Commits · e / devices / android_kernel_oneplus_sm8150

drivers/gpu/drm/bridge/analogix-anx7625.c

+49 −3

Original line number	Diff line number	Diff line
		/* Copyright (c) 2018, The Linux Foundation. All rights reserved.
		/* Copyright (c) 2018-2019, The Linux Foundation. All rights reserved.
		*
		* Copyright(c) 2016, Analogix Semiconductor. All rights reserved.
		*
		@@ -1253,10 +1253,14 @@ static void anx7625_bridge_disable(struct drm_bridge *bridge)

		mutex_lock(&anx7625->lock);

		anx7625_stop(anx7625);

		anx7625->enabled = false;

		if (!anx7625->powered)
		goto out;

		anx7625_stop(anx7625);

		out:
		mutex_unlock(&anx7625->lock);

		TRACE("anx7625 disabled\n");
		@@ -1291,6 +1295,9 @@ static void anx7625_bridge_enable(struct drm_bridge *bridge)

		anx7625->enabled = true;

		if (!anx7625->powered)
		goto out;

		if (!anx7625->connected)
		DRM_ERROR("cable is not connected\n");

		@@ -1301,6 +1308,7 @@ static void anx7625_bridge_enable(struct drm_bridge *bridge)
		if (err)
		DRM_ERROR("Failed to start: %d\n", err);

		out:
		mutex_unlock(&anx7625->lock);

		TRACE("anx7625 enabled\n");
		@@ -1512,10 +1520,48 @@ static const struct of_device_id anx7625_id_match_table[] = {
		MODULE_DEVICE_TABLE(of, anx7625_id_match_table);
		#endif

		#ifdef CONFIG_PM_SLEEP
		static int anx7625_suspend(struct device *dev)
		{
		struct i2c_client *client = to_i2c_client(dev);
		struct anx7625 *anx7625 = i2c_get_clientdata(client);

		mutex_lock(&anx7625->lock);

		anx7625_poweroff(anx7625);

		mutex_unlock(&anx7625->lock);

		return 0;
		}

		static int anx7625_resume(struct device *dev)
		{
		struct i2c_client *client = to_i2c_client(dev);
		struct anx7625 *anx7625 = i2c_get_clientdata(client);

		mutex_lock(&anx7625->lock);

		anx7625->last_read_DevAddr = 0;

		anx7625_poweron(anx7625);

		if (anx7625->enabled)
		anx7625_start(anx7625);

		mutex_unlock(&anx7625->lock);

		return 0;
		}
		#endif

		static SIMPLE_DEV_PM_OPS(anx7625_pm, anx7625_suspend, anx7625_resume);

		static struct i2c_driver anx7625_driver = {
		.driver = {
		.name = "anx7625",
		.owner = THIS_MODULE,
		.pm = &anx7625_pm,
		#ifdef CONFIG_OF
		.of_match_table = anx7625_id_match_table,
		#endif