diff options
Diffstat (limited to 'target/linux/s3c24xx/patches-2.6.24/1251-use-gta02-glamo-mci-sd-dynamic-clock.patch.patch')
| -rw-r--r-- | target/linux/s3c24xx/patches-2.6.24/1251-use-gta02-glamo-mci-sd-dynamic-clock.patch.patch | 92 |
1 files changed, 92 insertions, 0 deletions
diff --git a/target/linux/s3c24xx/patches-2.6.24/1251-use-gta02-glamo-mci-sd-dynamic-clock.patch.patch b/target/linux/s3c24xx/patches-2.6.24/1251-use-gta02-glamo-mci-sd-dynamic-clock.patch.patch new file mode 100644 index 0000000000..88071db5c0 --- /dev/null +++ b/target/linux/s3c24xx/patches-2.6.24/1251-use-gta02-glamo-mci-sd-dynamic-clock.patch.patch @@ -0,0 +1,92 @@ +From d4b28ec4e2818207cc0e48b90dbce581e0b779e7 Mon Sep 17 00:00:00 2001 +From: Andy Green <andy@openmoko.com> +Date: Wed, 30 Jul 2008 12:46:56 +0100 +Subject: [PATCH] use-gta02-glamo-mci-sd-dynamic-clock.patch + +This patch uses the new glamo-mci slow clock ratio +patch in order to dynamically reduce SD Card clock +rate when the GPS unit is powered on GTA02. + +Signed-off-by: Andy Green <andy@openmoko.com> +--- + arch/arm/mach-s3c2440/mach-gta02.c | 12 ++++++++++++ + arch/arm/plat-s3c24xx/neo1973_pm_gps.c | 12 +++++++++--- + 2 files changed, 21 insertions(+), 3 deletions(-) + +diff --git a/arch/arm/mach-s3c2440/mach-gta02.c b/arch/arm/mach-s3c2440/mach-gta02.c +index 382837d..8e43c4a 100644 +--- a/arch/arm/mach-s3c2440/mach-gta02.c ++++ b/arch/arm/mach-s3c2440/mach-gta02.c +@@ -85,6 +85,8 @@ + #include <linux/gta02_hdq.h> + #include <linux/bq27000_battery.h> + ++#include "../plat-s3c24xx/neo1973_pm_gps.h" ++ + /* arbitrates which sensor IRQ owns the shared SPI bus */ + static spinlock_t motion_irq_lock; + +@@ -1424,6 +1426,15 @@ static void gta02_glamo_mci_suspending(struct platform_device *dev) + + /* Smedia Glamo 3362 */ + ++/* ++ * we crank down SD Card clock dynamically when GPS is powered ++ */ ++ ++static int gta02_glamo_mci_use_slow(void) ++{ ++ return neo1973_pm_gps_is_on(); ++} ++ + static struct glamofb_platform_data gta02_glamo_pdata = { + .width = 43, + .height = 58, +@@ -1456,6 +1467,7 @@ static struct glamofb_platform_data gta02_glamo_pdata = { + + /* glamo MMC function platform data */ + .glamo_set_mci_power = gta02_glamo_mmc_set_power, ++ .glamo_mci_use_slow = gta02_glamo_mci_use_slow, + .glamo_irq_is_wired = glamo_irq_is_wired, + .mci_suspending = gta02_glamo_mci_suspending, + .mci_all_dependencies_resumed = +diff --git a/arch/arm/plat-s3c24xx/neo1973_pm_gps.c b/arch/arm/plat-s3c24xx/neo1973_pm_gps.c +index 8cd583d..a21b763 100644 +--- a/arch/arm/plat-s3c24xx/neo1973_pm_gps.c ++++ b/arch/arm/plat-s3c24xx/neo1973_pm_gps.c +@@ -39,6 +39,12 @@ struct neo1973_pm_gps_data { + + static struct neo1973_pm_gps_data neo1973_gps; + ++int neo1973_pm_gps_is_on(void) ++{ ++ return neo1973_gps.power_was_on; ++} ++EXPORT_SYMBOL_GPL(neo1973_pm_gps_is_on); ++ + /* This is the 2.8V supply for the RTC crystal, the mail clock crystal and + * the input to VDD_RF */ + static void gps_power_2v8_set(int on) +@@ -265,6 +271,9 @@ static int gps_power_1v5_get(void) + /* This is the POWERON pin */ + static void gps_pwron_set(int on) + { ++ ++ neo1973_gps.power_was_on = !!on; ++ + #ifdef CONFIG_MACH_NEO1973_GTA01 + if (machine_is_neo1973_gta01()) + neo1973_gpb_setpin(GTA01_GPIO_GPS_PWRON, on); +@@ -492,9 +501,6 @@ static DEVICE_ATTR(power_sequence, 0644, power_sequence_read, + static int gta01_pm_gps_suspend(struct platform_device *pdev, + pm_message_t state) + { +- +- neo1973_gps.power_was_on = gps_pwron_get(); +- + #ifdef CONFIG_MACH_NEO1973_GTA01 + if (machine_is_neo1973_gta01()) { + /* FIXME */ +-- +1.5.6.5 + |