shinys000114/linux
1
0
Fork 0
mirror of https://github.com/hardkernel/linux.git synced 2026-06-07 03:15:31 +09:00
Code Issues Packages Projects Releases Wiki Activity

leds: leds-is31fl32xx: add suspend & resume support

Browse Source 
This patch could reduce the power consumption almost 2ma@5v on
rk3308-evb-v10 boards.

Change-Id: I4ee94524427eda72b0f5b61be46cd7a6d3f6a17d
Signed-off-by: Ziyuan Xu <xzy.xu@rock-chips.com>
This commit is contained in:
Ziyuan Xu
2018-05-14 18:16:54 +08:00
committed by Tao Huang
parent e7c2b203f6
commit aed95973ab
1 changed files with 35 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files

35
drivers/leds/leds-is31fl32xx.c
View File

@@ -606,6 +606,36 @@ static void is31fl32xx_shutdown(struct i2c_client *client)
gpiod_set_value(priv->reset_gpio, 0);
}
#ifdef CONFIG_PM_SLEEP
static int is31fl32xx_suspend(struct device *dev)
{
struct i2c_client *client = to_i2c_client(dev);
struct is31fl32xx_priv *priv = i2c_get_clientdata(client);
if (IS_ERR(priv->reset_gpio)) {
return is31fl3216_software_shutdown(priv,
IS31FL3216_CONFIG_SSD_DISABLE);
} else {
gpiod_set_value(priv->reset_gpio, 0);
return 0;
}
}
static int is31fl32xx_resume(struct device *dev)
{
struct i2c_client *client = to_i2c_client(dev);
struct is31fl32xx_priv *priv = i2c_get_clientdata(client);
if (IS_ERR(priv->reset_gpio)) {
return is31fl3216_software_shutdown(priv,
IS31FL3216_CONFIG_SSD_ENABLE);
} else {
gpiod_set_value(priv->reset_gpio, 1);
return 0;
}
}
#endif /* CONFIG_PM_SLEEP */
/*
* i2c-core (and modalias) requires that id_table be properly filled,
* even though it is not used for DeviceTree based instantiation.
@@ -622,10 +652,15 @@ static const struct i2c_device_id is31fl32xx_id[] = {
MODULE_DEVICE_TABLE(i2c, is31fl32xx_id);
static SIMPLE_DEV_PM_OPS(is31fl32xx_pmops,
is31fl32xx_suspend,
is31fl32xx_resume);
static struct i2c_driver is31fl32xx_driver = {
.driver = {
.name = "is31fl32xx",
.of_match_table = of_is31fl32xx_match,
.pm = &is31fl32xx_pmops,
},
.probe = is31fl32xx_probe,
.remove = is31fl32xx_remove,