diff options
Diffstat (limited to 'drivers/video')
| -rw-r--r-- | drivers/video/backlight/lp855x_bl.c | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/drivers/video/backlight/lp855x_bl.c b/drivers/video/backlight/lp855x_bl.c index 257b3badd8e4..a26d3bb25650 100644 --- a/drivers/video/backlight/lp855x_bl.c +++ b/drivers/video/backlight/lp855x_bl.c @@ -17,6 +17,7 @@ #include <linux/of.h> #include <linux/platform_data/lp855x.h> #include <linux/pwm.h> +#include <linux/regulator/consumer.h> /* LP8550/1/2/3/6 Registers */ #define LP855X_BRIGHTNESS_CTRL 0x00 @@ -383,6 +384,13 @@ static int lp855x_parse_dt(struct lp855x *lp) pdata->rom_data = &rom[0]; } + pdata->supply = devm_regulator_get(dev, "power"); + if (IS_ERR(pdata->supply)) { + if (PTR_ERR(pdata->supply) == -EPROBE_DEFER) + return -EPROBE_DEFER; + pdata->supply = NULL; + } + lp->pdata = pdata; return 0; @@ -423,6 +431,14 @@ static int lp855x_probe(struct i2c_client *cl, const struct i2c_device_id *id) else lp->mode = REGISTER_BASED; + if (lp->pdata->supply) { + ret = regulator_enable(lp->pdata->supply); + if (ret < 0) { + dev_err(&cl->dev, "failed to enable supply: %d\n", ret); + return ret; + } + } + i2c_set_clientdata(cl, lp); ret = lp855x_configure(lp); @@ -454,6 +470,8 @@ static int lp855x_remove(struct i2c_client *cl) lp->bl->props.brightness = 0; backlight_update_status(lp->bl); + if (lp->pdata->supply) + regulator_disable(lp->pdata->supply); sysfs_remove_group(&lp->dev->kobj, &lp855x_attr_group); return 0; |