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| author | Benn Pörscke <benn.porscke@stericsson.com> | 2011-10-07 15:31:57 +0200 |
|---|---|---|
| committer | Benn Pörscke <benn.porscke@stericsson.com> | 2011-10-07 15:31:57 +0200 |
| commit | 47a4dbf83a75014d6b3467be18997894f1c617db (patch) | |
| tree | 7f5d116db48205309fbc4ae0954f20ab8a651e46 /drivers/video/backlight/pwm_bl.c | |
| parent | ea8a52f9f4bcc3420c38ae07f8378a2f18443970 (diff) | |
Squashandroid-20111012
Change-Id: If0ae9fa8067740ab2ede33703c79ec134f204a5e
Diffstat (limited to 'drivers/video/backlight/pwm_bl.c')
| -rw-r--r-- | drivers/video/backlight/pwm_bl.c | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/drivers/video/backlight/pwm_bl.c b/drivers/video/backlight/pwm_bl.c index 55044351889..16fe812724f 100644 --- a/drivers/video/backlight/pwm_bl.c +++ b/drivers/video/backlight/pwm_bl.c @@ -25,6 +25,7 @@ struct pwm_bl_data { struct pwm_device *pwm; struct device *dev; unsigned int period; + unsigned int lth_brightness; int (*notify)(struct device *, int brightness); }; @@ -48,7 +49,9 @@ static int pwm_backlight_update_status(struct backlight_device *bl) pwm_config(pb->pwm, 0, pb->period); pwm_disable(pb->pwm); } else { - pwm_config(pb->pwm, brightness * pb->period / max, pb->period); + brightness = pb->lth_brightness + (brightness * + (pb->period - pb->lth_brightness) / max); + pwm_config(pb->pwm, brightness, pb->period); pwm_enable(pb->pwm); } return 0; @@ -92,6 +95,8 @@ static int pwm_backlight_probe(struct platform_device *pdev) pb->period = data->pwm_period_ns; pb->notify = data->notify; + pb->lth_brightness = data->lth_brightness * + (data->pwm_period_ns / data->max_brightness); pb->dev = &pdev->dev; pb->pwm = pwm_request(data->pwm_id, "backlight"); |