diff options
Diffstat (limited to 'target/linux/s3c24xx/patches-2.6.24/1189-change-lcm-keep-power-faster-resume.patch.patch')
| -rw-r--r-- | target/linux/s3c24xx/patches-2.6.24/1189-change-lcm-keep-power-faster-resume.patch.patch | 94 |
1 files changed, 94 insertions, 0 deletions
diff --git a/target/linux/s3c24xx/patches-2.6.24/1189-change-lcm-keep-power-faster-resume.patch.patch b/target/linux/s3c24xx/patches-2.6.24/1189-change-lcm-keep-power-faster-resume.patch.patch new file mode 100644 index 000000000..ef648f2da --- /dev/null +++ b/target/linux/s3c24xx/patches-2.6.24/1189-change-lcm-keep-power-faster-resume.patch.patch @@ -0,0 +1,94 @@ +From 897135bb5ce881419ee6e7c97875293b3e74330c Mon Sep 17 00:00:00 2001 +From: Andy Green <andy@openmoko.com> +Date: Wed, 2 Jul 2008 22:40:28 +0100 +Subject: [PATCH] change-lcm-keep-power-faster-resume.patch + +The LCM spins for 100ms during resume for not much reason. Leave it powered +(it is meant to pull uA when suspended) and get nice fast resume to video. + +Signed-off-by: Andy Green <andy@openmoko.com> +--- + arch/arm/mach-s3c2440/mach-gta02.c | 1 + + drivers/video/display/jbt6k74.c | 24 ++++-------------------- + 2 files changed, 5 insertions(+), 20 deletions(-) + +diff --git a/arch/arm/mach-s3c2440/mach-gta02.c b/arch/arm/mach-s3c2440/mach-gta02.c +index accdbc5..d5841d7 100644 +--- a/arch/arm/mach-s3c2440/mach-gta02.c ++++ b/arch/arm/mach-s3c2440/mach-gta02.c +@@ -553,6 +553,7 @@ static struct pcf50633_platform_data gta02_pcf_pdata = { + }, + [PCF50633_REGULATOR_LDO6] = { + .name = "user1", ++ .flags = PMU_VRAIL_F_SUSPEND_ON, + .voltage = { + .init = 0, + .max = 3300, +diff --git a/drivers/video/display/jbt6k74.c b/drivers/video/display/jbt6k74.c +index 7cc00ad..6fa1fe7 100644 +--- a/drivers/video/display/jbt6k74.c ++++ b/drivers/video/display/jbt6k74.c +@@ -628,7 +628,7 @@ static int jbt_suspend(struct spi_device *spi, pm_message_t state) + struct jbt_info *jbt = dev_get_drvdata(&spi->dev); + struct jbt6k74_platform_data *jbt6k74_pdata = spi->dev.platform_data; + +- /* platform needs to register resume dependencies here */ ++ /* platform can register resume dependencies here, if any */ + if (jbt6k74_pdata->suspending) + (jbt6k74_pdata->suspending)(0, spi); + +@@ -638,7 +638,7 @@ static int jbt_suspend(struct spi_device *spi, pm_message_t state) + + jbt->have_resumed = 0; + +- (jbt6k74_pdata->reset)(0, 0); ++/* (jbt6k74_pdata->reset)(0, 0); */ + + return 0; + } +@@ -648,31 +648,17 @@ int jbt6k74_resume(struct spi_device *spi) + struct jbt_info *jbt = dev_get_drvdata(&spi->dev); + struct jbt6k74_platform_data *jbt6k74_pdata = spi->dev.platform_data; + +- /* if we still wait on dependencies, exit because we will get called +- * again. This guy will get called once by core resume action, and +- * should be set as resume_dependency callback for any dependencies +- * set by platform code. +- */ +- + if (jbt6k74_pdata->all_dependencies_resumed) + if (!(jbt6k74_pdata->all_dependencies_resumed)(0)) + return 0; + + /* we can get called twice with all dependencies resumed if our core +- * resume callback is last of all. Protect against going twice ++ * resume callback is last of all. Protect against doing anything twice + */ + if (jbt->have_resumed) + return 0; + +- jbt->have_resumed = 1; +- +- /* OK we are sure all devices we depend on for operation are up now */ +- +- /* even this needs glamo up on GTA02 :-/ */ +- (jbt6k74_pdata->reset)(0, 1); +- +- jbt6k74_enter_state(jbt, JBT_STATE_DEEP_STANDBY); +- msleep(100); ++ jbt->have_resumed |= 1; + + switch (jbt->last_state) { + case JBT_STATE_QVGA_NORMAL: +@@ -684,8 +670,6 @@ int jbt6k74_resume(struct spi_device *spi) + } + jbt6k74_display_onoff(jbt, 1); + +- /* this gives the platform a chance to bring up backlight now */ +- + if (jbt6k74_pdata->resuming) + (jbt6k74_pdata->resuming)(0); + +-- +1.5.6.5 + |