---

yaml --- r: 221739 b: refs/heads/master c: fef7764 h: refs/heads/master i: 221737: fb49c34 221735: dbe3a8d v: v3
git-mirror · Nov 12, 2010 · 25520c9 · 25520c9
1 parent 53ec876
commit 25520c9
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Showing 3 changed files with 8 additions and 2 deletions.
diff --git a/[refs] b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: a1025e224c518dceb342d0cc54e5513c6476f60c
+refs/heads/master: fef7764f8bca9d603a8a51dcb522db97739a33c2
diff --git a/trunk/drivers/video/backlight/pwm_bl.c b/trunk/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");

diff --git a/trunk/include/linux/pwm_backlight.h b/trunk/include/linux/pwm_backlight.h
@@ -8,6 +8,7 @@ struct platform_pwm_backlight_data {
 	int pwm_id;
 	unsigned int max_brightness;
 	unsigned int dft_brightness;
+	unsigned int lth_brightness;
 	unsigned int pwm_period_ns;
 	int (*init)(struct device *dev);
 	int (*notify)(struct device *dev, int brightness);