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authorDmitry Torokhov <dmitry.torokhov@gmail.com>2019-02-05 14:40:40 -0800
committerDmitry Torokhov <dmitry.torokhov@gmail.com>2019-02-07 23:41:11 -0800
commit937c4e552fd1174784045684740edfcea536159d (patch)
treeb78025dc87babe6a08913832ad61a2afe7d69c34 /drivers/input/touchscreen
parentInput: ili210x - switch to using devm_device_add_group() (diff)
downloadlinux-dev-937c4e552fd1174784045684740edfcea536159d.tar.xz
linux-dev-937c4e552fd1174784045684740edfcea536159d.zip
Input: stmfts - acknowledge that setting brightness is a blocking call
We need to turn regulators on and off when switching brightness, and that may block, therefore we have to set stmfts_brightness_set() as LED's brightness_set_blocking() method. Fixes: 78bcac7b2ae1 ("Input: add support for the STMicroelectronics FingerTip touchscreen") Acked-by: Andi Shyti <andi@etezian.org> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Diffstat (limited to 'drivers/input/touchscreen')
-rw-r--r--drivers/input/touchscreen/stmfts.c30
1 files changed, 16 insertions, 14 deletions
diff --git a/drivers/input/touchscreen/stmfts.c b/drivers/input/touchscreen/stmfts.c
index 704e99046916..b6f95f20f924 100644
--- a/drivers/input/touchscreen/stmfts.c
+++ b/drivers/input/touchscreen/stmfts.c
@@ -106,27 +106,29 @@ struct stmfts_data {
bool running;
};
-static void stmfts_brightness_set(struct led_classdev *led_cdev,
+static int stmfts_brightness_set(struct led_classdev *led_cdev,
enum led_brightness value)
{
struct stmfts_data *sdata = container_of(led_cdev,
struct stmfts_data, led_cdev);
int err;
- if (value == sdata->led_status || !sdata->ledvdd)
- return;
-
- if (!value) {
- regulator_disable(sdata->ledvdd);
- } else {
- err = regulator_enable(sdata->ledvdd);
- if (err)
- dev_warn(&sdata->client->dev,
- "failed to disable ledvdd regulator: %d\n",
- err);
+ if (value != sdata->led_status && sdata->ledvdd) {
+ if (!value) {
+ regulator_disable(sdata->ledvdd);
+ } else {
+ err = regulator_enable(sdata->ledvdd);
+ if (err) {
+ dev_warn(&sdata->client->dev,
+ "failed to disable ledvdd regulator: %d\n",
+ err);
+ return err;
+ }
+ }
+ sdata->led_status = value;
}
- sdata->led_status = value;
+ return 0;
}
static enum led_brightness stmfts_brightness_get(struct led_classdev *led_cdev)
@@ -608,7 +610,7 @@ static int stmfts_enable_led(struct stmfts_data *sdata)
sdata->led_cdev.name = STMFTS_DEV_NAME;
sdata->led_cdev.max_brightness = LED_ON;
sdata->led_cdev.brightness = LED_OFF;
- sdata->led_cdev.brightness_set = stmfts_brightness_set;
+ sdata->led_cdev.brightness_set_blocking = stmfts_brightness_set;
sdata->led_cdev.brightness_get = stmfts_brightness_get;
err = devm_led_classdev_register(&sdata->client->dev, &sdata->led_cdev);