87 lines
2.9 KiB
Diff
87 lines
2.9 KiB
Diff
From db07519c1dfe916bcf9644bfdc4d7c03707a979e Mon Sep 17 00:00:00 2001
|
|
From: Andy Green <andy@openmoko.com>
|
|
Date: Tue, 15 Jul 2008 09:04:05 +0100
|
|
Subject: [PATCH] change-backlight-level-not-forced-up-on-resume.patch
|
|
|
|
We at least always enabled backlight on resume, this patch
|
|
changes us to set backlight back to last requested backlight
|
|
brightness level on resume. Note it means that you can
|
|
resume with screen blanked, but it should come back if that
|
|
happened with touchscreen action as usual.
|
|
|
|
/sys/class/backlight/pcf50633-bl/actual_brightness
|
|
and
|
|
/sys/class/backlight/pcf50633-bl/brightness
|
|
|
|
seem to agree after resume when reportedly they didn't before.
|
|
|
|
Signed-off-by: Andy Green <andy@openmoko.com>
|
|
---
|
|
drivers/i2c/chips/pcf50633.c | 29 +++++++++++++++--------------
|
|
1 files changed, 15 insertions(+), 14 deletions(-)
|
|
|
|
diff --git a/drivers/i2c/chips/pcf50633.c b/drivers/i2c/chips/pcf50633.c
|
|
index 9f98ba1..f461378 100644
|
|
--- a/drivers/i2c/chips/pcf50633.c
|
|
+++ b/drivers/i2c/chips/pcf50633.c
|
|
@@ -1878,22 +1878,14 @@ static int pcf50633bl_get_intensity(struct backlight_device *bd)
|
|
return intensity & 0x3f;
|
|
}
|
|
|
|
-static int pcf50633bl_set_intensity(struct backlight_device *bd)
|
|
+static int __pcf50633bl_set_intensity(struct pcf50633_data *pcf, int intensity)
|
|
{
|
|
- struct pcf50633_data *pcf = bl_get_data(bd);
|
|
- int intensity = bd->props.brightness;
|
|
int old_intensity = reg_read(pcf, PCF50633_REG_LEDOUT);
|
|
int ret;
|
|
|
|
- dev_info(&pcf->client.dev, "pcf50633bl_set_intensity\n");
|
|
-
|
|
if (!(reg_read(pcf, PCF50633_REG_LEDENA) & 1))
|
|
old_intensity = 0;
|
|
|
|
- if ((bd->props.power != FB_BLANK_UNBLANK) ||
|
|
- (bd->props.fb_blank != FB_BLANK_UNBLANK))
|
|
- intensity = 0;
|
|
-
|
|
/*
|
|
* The PCF50633 cannot handle LEDOUT = 0 (datasheet p60)
|
|
* if seen, you have to re-enable the LED unit
|
|
@@ -1919,6 +1911,18 @@ static int pcf50633bl_set_intensity(struct backlight_device *bd)
|
|
return ret;
|
|
}
|
|
|
|
+static int pcf50633bl_set_intensity(struct backlight_device *bd)
|
|
+{
|
|
+ struct pcf50633_data *pcf = bl_get_data(bd);
|
|
+ int intensity = bd->props.brightness;
|
|
+
|
|
+ if ((bd->props.power != FB_BLANK_UNBLANK) ||
|
|
+ (bd->props.fb_blank != FB_BLANK_UNBLANK))
|
|
+ intensity = 0;
|
|
+
|
|
+ return __pcf50633bl_set_intensity(pcf, intensity);
|
|
+}
|
|
+
|
|
static struct backlight_ops pcf50633bl_ops = {
|
|
.get_brightness = pcf50633bl_get_intensity,
|
|
.update_status = pcf50633bl_set_intensity,
|
|
@@ -2508,11 +2512,8 @@ void pcf50633_backlight_resume(struct pcf50633_data *pcf)
|
|
/* platform defines resume ramp speed */
|
|
reg_write(pcf, PCF50633_REG_LEDDIM,
|
|
pcf->pdata->resume_backlight_ramp_speed);
|
|
- reg_write(pcf, PCF50633_REG_LEDOUT, pcf->standby_regs.misc[
|
|
- PCF50633_REG_LEDOUT - PCF50633_REG_AUTOOUT]);
|
|
- /* we force the backlight on in fact */
|
|
- reg_write(pcf, PCF50633_REG_LEDENA, pcf->standby_regs.misc[
|
|
- PCF50633_REG_LEDENA - PCF50633_REG_AUTOOUT] | 1);
|
|
+
|
|
+ __pcf50633bl_set_intensity(pcf, pcf->backlight->props.brightness);
|
|
}
|
|
EXPORT_SYMBOL_GPL(pcf50633_backlight_resume);
|
|
|
|
--
|
|
1.5.6.5
|
|
|