change prefix for kernelpatchbase 2.6.26

SVN-Revision: 13619

1 files changed, 122 insertions, 0 deletions

diff --git a/target/linux/s3c24xx/patches-2.6.26/1090-fix-lis302dl-suspend-gpio.patch.patch b/target/linux/s3c24xx/patches-2.6.26/1090-fix-lis302dl-suspend-gpio.patch.patch
new file mode 100755
index 0000000000..9a9c6051d2
--- /dev/null
+++ b/target/linux/s3c24xx/patches-2.6.26/1090-fix-lis302dl-suspend-gpio.patch.patch
@@ -0,0 +1,122 @@
+From f97c81869175362f755488bd50ddf85570236ce8 Mon Sep 17 00:00:00 2001
+From: Andy Green <andy@openmoko.com>
+Date: Fri, 25 Jul 2008 23:06:02 +0100
+Subject: [PATCH] fix-lis302dl-suspend-gpio.patch
+ Add platform stuff to deal with going in and out of suspend
+ so the motion sensor IO is not driving high into unpowered sensors
+
+Signed-off-by: Andy Green <andy@openmoko.com>
+---
+ arch/arm/mach-s3c2440/mach-gta02.c |   28 +++++++++++++++++++++++++++-
+ drivers/input/misc/lis302dl.c      |   15 +++++++++++++++
+ include/linux/lis302dl.h           |    1 +
+ 3 files changed, 43 insertions(+), 1 deletions(-)
+
+diff --git a/arch/arm/mach-s3c2440/mach-gta02.c b/arch/arm/mach-s3c2440/mach-gta02.c
+index 5bd68a6..99206ee 100644
+--- a/arch/arm/mach-s3c2440/mach-gta02.c
++++ b/arch/arm/mach-s3c2440/mach-gta02.c
+@@ -887,7 +887,31 @@ void gat02_lis302dl_bitbang_read(struct lis302dl_info *lis)
+ }
+ 
+ 
+-struct lis302dl_platform_data lis302_pdata[] = {
++void gat02_lis302dl_suspend_io(struct lis302dl_info *lis, int resume)
++{
++	struct lis302dl_platform_data *pdata = lis->pdata;
++
++	if (!resume) {
++		 /*
++		 * we don't want to power them with a high level
++		 * because GSENSOR_3V3 is not up during suspend
++		 */
++		s3c2410_gpio_setpin(pdata->pin_chip_select, 0);
++		s3c2410_gpio_setpin(pdata->pin_clk, 0);
++		s3c2410_gpio_setpin(pdata->pin_mosi, 0);
++		/* misnomer: it is a pullDOWN in 2442 */
++		s3c2410_gpio_pullup(pdata->pin_miso, 1);
++		return;
++	}
++
++	/* back to normal */
++	s3c2410_gpio_setpin(pdata->pin_chip_select, 1);
++	s3c2410_gpio_setpin(pdata->pin_clk, 1);
++	/* misnomer: it is a pullDOWN in 2442 */
++	s3c2410_gpio_pullup(pdata->pin_miso, 0);
++}
++
++const struct lis302dl_platform_data lis302_pdata[] = {
+ 	{
+ 		.name		= "lis302-1 (top)",
+ 		.pin_chip_select= S3C2410_GPD12,
+@@ -896,6 +920,7 @@ struct lis302dl_platform_data lis302_pdata[] = {
+ 		.pin_miso	= S3C2410_GPG5,
+ 		.open_drain	= 1, /* altered at runtime by PCB rev */
+ 		.lis302dl_bitbang_read = gat02_lis302dl_bitbang_read,
++		.lis302dl_suspend_io = gat02_lis302dl_suspend_io,
+ 	}, {
+ 		.name		= "lis302-2 (bottom)",
+ 		.pin_chip_select= S3C2410_GPD13,
+@@ -904,6 +929,7 @@ struct lis302dl_platform_data lis302_pdata[] = {
+ 		.pin_miso	= S3C2410_GPG5,
+ 		.open_drain	= 1, /* altered at runtime by PCB rev */
+ 		.lis302dl_bitbang_read = gat02_lis302dl_bitbang_read,
++		.lis302dl_suspend_io = gat02_lis302dl_suspend_io,
+ 	},
+ };
+ 
+diff --git a/drivers/input/misc/lis302dl.c b/drivers/input/misc/lis302dl.c
+index 36bdcf7..2be816a 100644
+--- a/drivers/input/misc/lis302dl.c
++++ b/drivers/input/misc/lis302dl.c
+@@ -428,6 +428,15 @@ static int lis302dl_suspend(struct spi_device *spi, pm_message_t state)
+ 	disable_irq(lis->spi_dev->irq);
+ 	local_save_flags(flags);
+ 
++	/*
++	 * When we share SPI over multiple sensors, there is a race here
++	 * that one or more sensors will lose.  In that case, the shared
++	 * SPI bus GPIO will be in sleep mode and partially pulled down.  So
++	 * we explicitly put our IO into "wake" mode here before the final
++	 * traffic to the sensor.
++	 */
++	(lis->pdata->lis302dl_suspend_io)(lis, 1);
++
+ 	/* save registers */
+ 	lis->regs[LIS302DL_REG_CTRL1] = reg_read(lis, LIS302DL_REG_CTRL1);
+ 	lis->regs[LIS302DL_REG_CTRL2] = reg_read(lis, LIS302DL_REG_CTRL2);
+@@ -467,6 +476,9 @@ static int lis302dl_suspend(struct spi_device *spi, pm_message_t state)
+ 		reg_write(lis, LIS302DL_REG_CTRL1, tmp);
+ 	}
+ 
++	/* place our IO to the device in sleep-compatible states */
++	(lis->pdata->lis302dl_suspend_io)(lis, 0);
++
+ 	local_irq_restore(flags);
+ 
+ 	return 0;
+@@ -479,6 +491,9 @@ static int lis302dl_resume(struct spi_device *spi)
+ 
+ 	local_save_flags(flags);
+ 
++	/* get our IO to the device back in operational states */
++	(lis->pdata->lis302dl_suspend_io)(lis, 1);
++
+ 	/* restore registers after resume */
+ 	reg_write(lis, LIS302DL_REG_CTRL1, lis->regs[LIS302DL_REG_CTRL1]);
+ 	reg_write(lis, LIS302DL_REG_CTRL2, lis->regs[LIS302DL_REG_CTRL2]);
+diff --git a/include/linux/lis302dl.h b/include/linux/lis302dl.h
+index 2dea813..0d6b4c4 100644
+--- a/include/linux/lis302dl.h
++++ b/include/linux/lis302dl.h
+@@ -16,6 +16,7 @@ struct lis302dl_platform_data {
+ 	unsigned long pin_miso;
+ 	int open_drain;
+ 	void (*lis302dl_bitbang_read)(struct lis302dl_info *);
++	void (*lis302dl_suspend_io)(struct lis302dl_info *, int resuming);
+ };
+ 
+ struct lis302dl_info {
+-- 
+1.5.6.3
+