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backlight: Pass device through notify callback in the pwm driver 

Add the device to the notify callback's arguments in the PWM backlight 
driver. This brings the notify callback into line with the other 
callbacks defined by this driver.

Signed-off-by: Ben Dooks <ben@simtec.co.uk>
Signed-off-by: Simtec Linux Team <linux@simtec.co.uk>
Signed-off-by: Richard Purdie <rpurdie@linux.intel.com>
hifive-unleashed-5.1
Ben Dooks 2009-11-10 17:20:40 +00:00 committed by Richard Purdie
parent 5b0582ea42
commit cfc3899fcd
2 changed files with 7 additions and 4 deletions
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9
drivers/video/backlight/pwm_bl.c
View File

@ -22,8 +22,10 @@
struct pwm_bl_data {
struct pwm_device *pwm;
struct device *dev;
unsigned int period;
int (*notify)(int brightness);
int (*notify)(struct device *,
int brightness);
};
static int pwm_backlight_update_status(struct backlight_device *bl)
@ -39,7 +41,7 @@ static int pwm_backlight_update_status(struct backlight_device *bl)
brightness = 0;
if (pb->notify)
brightness = pb->notify(brightness);
brightness = pb->notify(pb->dev, brightness);
if (brightness == 0) {
pwm_config(pb->pwm, 0, pb->period);
@ -88,6 +90,7 @@ static int pwm_backlight_probe(struct platform_device *pdev)
pb->period = data->pwm_period_ns;
pb->notify = data->notify;
pb->dev = &pdev->dev;
pb->pwm = pwm_request(data->pwm_id, "backlight");
if (IS_ERR(pb->pwm)) {
@ -146,7 +149,7 @@ static int pwm_backlight_suspend(struct platform_device *pdev,
struct pwm_bl_data *pb = dev_get_drvdata(&bl->dev);
if (pb->notify)
pb->notify(0);
pb->notify(pb->dev, 0);
pwm_config(pb->pwm, 0, pb->period);
pwm_disable(pb->pwm);
return 0;

2
include/linux/pwm_backlight.h
View File

@ -10,7 +10,7 @@ struct platform_pwm_backlight_data {
unsigned int dft_brightness;
unsigned int pwm_period_ns;
int (*init)(struct device *dev);
int (*notify)(int brightness);
int (*notify)(struct device *dev, int brightness);
void (*exit)(struct device *dev);
};