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Commit 231a1652 authored by Xiaowen Wu's avatar Xiaowen Wu
Browse files

drm/bridge: add pm suspend/resume function for anx7625 



Add pm suspend/resume function for anx7625.

CRs-Fixed: 2395923
Change-Id: Ib5824a036e15894ab2a716bd45e0c6f5c3de89af
Signed-off-by: default avatarXiaowen Wu <wxiaowen@codeaurora.org>
parent 70f35db1

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