diff options
Diffstat (limited to 'target/linux/s3c24xx/patches-2.6.24/1201-fix-pcf50633-really-defer-backlight-on-resume.patch.patch')
| -rw-r--r-- | target/linux/s3c24xx/patches-2.6.24/1201-fix-pcf50633-really-defer-backlight-on-resume.patch.patch | 71 |
1 files changed, 71 insertions, 0 deletions
diff --git a/target/linux/s3c24xx/patches-2.6.24/1201-fix-pcf50633-really-defer-backlight-on-resume.patch.patch b/target/linux/s3c24xx/patches-2.6.24/1201-fix-pcf50633-really-defer-backlight-on-resume.patch.patch new file mode 100644 index 0000000000..fe67ee1d32 --- /dev/null +++ b/target/linux/s3c24xx/patches-2.6.24/1201-fix-pcf50633-really-defer-backlight-on-resume.patch.patch @@ -0,0 +1,71 @@ +From 0c734eb8a3a41ca9f9b452d0d1a7211de6c146dd Mon Sep 17 00:00:00 2001 +From: Andy Green <andy@openmoko.com> +Date: Wed, 2 Jul 2008 22:42:07 +0100 +Subject: [PATCH] fix-pcf50633-really-defer-backlight-on-resume.patch + +Backlight wasn't off by default on resume, so it was never really +deferred (until LCM is initialized). This fixes that and so removes +the brief white screen between pcf50633 resume and LCM init. + +Signed-off-by: Andy Green <andy@openmoko.com> +--- + drivers/i2c/chips/pcf50633.c | 23 +++++++++++++++++------ + 1 files changed, 17 insertions(+), 6 deletions(-) + +diff --git a/drivers/i2c/chips/pcf50633.c b/drivers/i2c/chips/pcf50633.c +index 120fdbc..875a5ee 100644 +--- a/drivers/i2c/chips/pcf50633.c ++++ b/drivers/i2c/chips/pcf50633.c +@@ -2481,13 +2481,14 @@ EXPORT_SYMBOL_GPL(pcf50633_ready); + + void pcf50633_backlight_resume(struct pcf50633_data *pcf) + { ++ dev_info(&pcf->client.dev, "pcf50633_backlight_resume\n"); ++ + /* we force the backlight on in fact */ +- __reg_write(pcf, PCF50633_REG_LEDOUT, pcf->standby_regs.misc[ ++ reg_write(pcf, PCF50633_REG_LEDDIM, 1); ++ reg_write(pcf, PCF50633_REG_LEDOUT, pcf->standby_regs.misc[ + PCF50633_REG_LEDOUT - PCF50633_REG_AUTOOUT]); +- __reg_write(pcf, PCF50633_REG_LEDENA, pcf->standby_regs.misc[ ++ reg_write(pcf, PCF50633_REG_LEDENA, pcf->standby_regs.misc[ + PCF50633_REG_LEDENA - PCF50633_REG_AUTOOUT] | 1); +- __reg_write(pcf, PCF50633_REG_LEDDIM, pcf->standby_regs.misc[ +- PCF50633_REG_LEDDIM - PCF50633_REG_AUTOOUT]); + } + EXPORT_SYMBOL_GPL(pcf50633_backlight_resume); + +@@ -2498,6 +2499,7 @@ static int pcf50633_resume(struct device *dev) + struct pcf50633_data *pcf = i2c_get_clientdata(client); + int ret; + u8 res[5]; ++ u8 misc[PCF50633_REG_LEDDIM - PCF50633_REG_AUTOOUT + 1]; + + dev_info(dev, "pcf50633_resume suspended on entry = %d\n", + (int)pcf->suspend_state); +@@ -2509,11 +2511,20 @@ static int pcf50633_resume(struct device *dev) + + __reg_write(pcf, PCF50633_REG_OOCTIM2, pcf->standby_regs.ooctim2); + ++ memcpy(misc, pcf->standby_regs.misc, sizeof(pcf->standby_regs.misc)); ++ ++ if (pcf->pdata->defer_resume_backlight) { ++ misc[PCF50633_REG_LEDOUT - PCF50633_REG_AUTOOUT] = 1; ++ misc[PCF50633_REG_LEDENA - PCF50633_REG_AUTOOUT] = 0x20; ++ misc[PCF50633_REG_LEDCTL - PCF50633_REG_AUTOOUT] = 1; ++ misc[PCF50633_REG_LEDDIM - PCF50633_REG_AUTOOUT] = 1; ++ } ++ + /* regulator voltages and enable states */ + ret = i2c_smbus_write_i2c_block_data(&pcf->client, + PCF50633_REG_AUTOOUT, +- sizeof(pcf->standby_regs.misc) - 4, +- &pcf->standby_regs.misc[0]); ++ sizeof(misc), ++ &misc[0]); + if (ret) + dev_err(dev, "Failed to restore misc :-( %d\n", ret); + +-- +1.5.6.5 + |