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Diffstat (limited to 'target/linux/s3c24xx/patches-2.6.24/1100-fix-lis302dl-suspend-gpio.patch.patch')
-rw-r--r--target/linux/s3c24xx/patches-2.6.24/1100-fix-lis302dl-suspend-gpio.patch.patch122
1 files changed, 0 insertions, 122 deletions
diff --git a/target/linux/s3c24xx/patches-2.6.24/1100-fix-lis302dl-suspend-gpio.patch.patch b/target/linux/s3c24xx/patches-2.6.24/1100-fix-lis302dl-suspend-gpio.patch.patch
deleted file mode 100644
index 3a60351c2a..0000000000
--- a/target/linux/s3c24xx/patches-2.6.24/1100-fix-lis302dl-suspend-gpio.patch.patch
+++ /dev/null
@@ -1,122 +0,0 @@
-From b1f47a12474fdb7c00e2234a8a02a7e1a2031a1e Mon Sep 17 00:00:00 2001
-From: Andy Green <andy@openmoko.com>
-Date: Sun, 13 Apr 2008 07:25:51 +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 {
---
-1.5.6.5
-