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backlight: Pass device through notify callback in the pwm driver

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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>
This commit is contained in:
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);
};