diff options
Diffstat (limited to 'target/linux/s3c24xx/patches/0211-change-backlight-level-not-forced-up-on-resume.patch.patch')
| -rwxr-xr-x | target/linux/s3c24xx/patches/0211-change-backlight-level-not-forced-up-on-resume.patch.patch | 90 |
1 files changed, 90 insertions, 0 deletions
diff --git a/target/linux/s3c24xx/patches/0211-change-backlight-level-not-forced-up-on-resume.patch.patch b/target/linux/s3c24xx/patches/0211-change-backlight-level-not-forced-up-on-resume.patch.patch new file mode 100755 index 0000000000..8bf93692c6 --- /dev/null +++ b/target/linux/s3c24xx/patches/0211-change-backlight-level-not-forced-up-on-resume.patch.patch @@ -0,0 +1,90 @@ +From d7b66b10fd485219e211b6de14fcb5e6a5266c6a Mon Sep 17 00:00:00 2001 +From: Andy Green <andy@openmoko.com> +Date: Fri, 25 Jul 2008 23:06:19 +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 | 28 +++++++++++++++++----------- + 1 files changed, 17 insertions(+), 11 deletions(-) + +diff --git a/drivers/i2c/chips/pcf50633.c b/drivers/i2c/chips/pcf50633.c +index 1074b94..fea2f38 100644 +--- a/drivers/i2c/chips/pcf50633.c ++++ b/drivers/i2c/chips/pcf50633.c +@@ -1874,16 +1874,12 @@ 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); + u_int8_t ledena = 2; + int ret; + +- dev_info(&pcf->client.dev, "pcf50633bl_set_intensity\n"); +- + if (!(reg_read(pcf, PCF50633_REG_LEDENA) & 1)) + old_intensity = 0; + +@@ -1891,7 +1887,8 @@ static int pcf50633bl_set_intensity(struct backlight_device *bd) + (bd->props.fb_blank != FB_BLANK_UNBLANK)) + intensity = 0; + +- /* The PCF50633 cannot handle LEDOUT = 0 (datasheet p60) ++ /* ++ * The PCF50633 cannot handle LEDOUT = 0 (datasheet p60) + * if seen, you have to re-enable the LED unit + */ + +@@ -1912,6 +1909,18 @@ 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, +@@ -2501,11 +2510,8 @@ 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); + +-- +1.5.6.3 + |