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