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Diffstat (limited to 'target/linux/s3c24xx/patches-2.6.26/1244-fix-suspend-backlight-timing-gta01.patch.patch')
-rwxr-xr-xtarget/linux/s3c24xx/patches-2.6.26/1244-fix-suspend-backlight-timing-gta01.patch.patch123
1 files changed, 123 insertions, 0 deletions
diff --git a/target/linux/s3c24xx/patches-2.6.26/1244-fix-suspend-backlight-timing-gta01.patch.patch b/target/linux/s3c24xx/patches-2.6.26/1244-fix-suspend-backlight-timing-gta01.patch.patch
new file mode 100755
index 0000000000..1349820954
--- /dev/null
+++ b/target/linux/s3c24xx/patches-2.6.26/1244-fix-suspend-backlight-timing-gta01.patch.patch
@@ -0,0 +1,123 @@
+From 26a1d7115299dcb17a9e9effc780ceba58afa91b Mon Sep 17 00:00:00 2001
+From: Mike Westerhof <mwester@dls.net>
+Date: Sun, 10 Aug 2008 09:13:46 +0100
+Subject: [PATCH] fix-suspend-backlight-timing-gta01.patch
+
+ This patch adds the gta01 backlight callback that defers the
+ restoring of the backlight until after the jbt driver has
+ resumed. This doesn't eliminate the flashing of the LCD on
+ the gta01, but it reduces it considerably.
+
+Signed-off-by: Mike Westerhof <mwester@dls.net>
+---
+ arch/arm/mach-s3c2410/mach-gta01.c | 9 ++++++++-
+ drivers/video/backlight/gta01_bl.c | 15 ++++++++++++++-
+ include/asm-arm/arch-s3c2410/gta01.h | 4 ++++
+ 3 files changed, 26 insertions(+), 2 deletions(-)
+
+diff --git a/arch/arm/mach-s3c2410/mach-gta01.c b/arch/arm/mach-s3c2410/mach-gta01.c
+index f3f87cf..9e42df0 100644
+--- a/arch/arm/mach-s3c2410/mach-gta01.c
++++ b/arch/arm/mach-s3c2410/mach-gta01.c
+@@ -507,14 +507,20 @@ static struct s3c2410_ts_mach_info gta01_ts_cfg = {
+
+ /* SPI */
+
+-void gta01_jbt6k74_reset(int devidx, int level)
++static void gta01_jbt6k74_reset(int devidx, int level)
+ {
+ /* empty place holder; gta01 does not yet use this */
+ printk(KERN_DEBUG "gta01_jbt6k74_reset\n");
+ }
+
++static void gta01_jbt6k74_resuming(int devidx)
++{
++ gta01bl_deferred_resume();
++}
++
+ const struct jbt6k74_platform_data gta01_jbt6k74_pdata = {
+ .reset = gta01_jbt6k74_reset,
++ .resuming = gta01_jbt6k74_resuming,
+ };
+
+ static struct spi_board_info gta01_spi_board_info[] = {
+@@ -584,6 +590,7 @@ static struct gta01bl_machinfo backlight_machinfo = {
+ .default_intensity = 1,
+ .max_intensity = 1,
+ .limit_mask = 1,
++ .defer_resume_backlight = 1,
+ };
+
+ static struct resource gta01_bl_resources[] = {
+diff --git a/drivers/video/backlight/gta01_bl.c b/drivers/video/backlight/gta01_bl.c
+index 301ec9c..34c19c8 100644
+--- a/drivers/video/backlight/gta01_bl.c
++++ b/drivers/video/backlight/gta01_bl.c
+@@ -57,6 +57,8 @@ struct gta01bl_data {
+
+ static struct gta01bl_data gta01bl;
+
++static int gta01bl_defer_resume_backlight;
++
+ #define GTA01BL_SUSPENDED 0x01
+ #define GTA01BL_BATTLOW 0x02
+
+@@ -132,10 +134,12 @@ static int gta01bl_suspend(struct platform_device *dev, pm_message_t state)
+ {
+ gta01bl_flags |= GTA01BL_SUSPENDED;
+ gta01bl_send_intensity(gta01_backlight_device);
++ neo1973_gpb_setpin(GTA01_GPIO_BACKLIGHT, 0);
++ s3c2410_gpio_cfgpin(GTA01_GPIO_BACKLIGHT, S3C2410_GPIO_OUTPUT);
+ return 0;
+ }
+
+-static int gta01bl_resume(struct platform_device *dev)
++void gta01bl_deferred_resume(void)
+ {
+ mutex_lock(&gta01bl.mutex);
+ gta01bl_init_hw();
+@@ -143,6 +147,13 @@ static int gta01bl_resume(struct platform_device *dev)
+
+ gta01bl_flags &= ~GTA01BL_SUSPENDED;
+ gta01bl_send_intensity(gta01_backlight_device);
++}
++EXPORT_SYMBOL_GPL(gta01bl_deferred_resume);
++
++static int gta01bl_resume(struct platform_device *dev)
++{
++ if (! gta01bl_defer_resume_backlight)
++ gta01bl_deferred_resume();
+ return 0;
+ }
+ #else
+@@ -199,6 +210,8 @@ static int __init gta01bl_probe(struct platform_device *pdev)
+ if (!machinfo->limit_mask)
+ machinfo->limit_mask = -1;
+
++ gta01bl_defer_resume_backlight = machinfo->defer_resume_backlight;
++
+ gta01_backlight_device = backlight_device_register("gta01-bl",
+ &pdev->dev, NULL,
+ &gta01bl_ops);
+diff --git a/include/asm-arm/arch-s3c2410/gta01.h b/include/asm-arm/arch-s3c2410/gta01.h
+index 1cc2099..989aa55 100644
+--- a/include/asm-arm/arch-s3c2410/gta01.h
++++ b/include/asm-arm/arch-s3c2410/gta01.h
+@@ -12,10 +12,14 @@
+ #define GTA01Bv4_SYSTEM_REV 0x00000240
+
+ /* Backlight */
++
++extern void gta01bl_deferred_resume(void);
++
+ struct gta01bl_machinfo {
+ unsigned int default_intensity;
+ unsigned int max_intensity;
+ unsigned int limit_mask;
++ unsigned int defer_resume_backlight;
+ };
+
+ /* Definitions common to all revisions */
+--
+1.5.6.3
+