92 lines
2.8 KiB
Diff
Executable file
92 lines
2.8 KiB
Diff
Executable file
From cba90f4bb9fc765be789e7d9e0f836ad4670c87f Mon Sep 17 00:00:00 2001
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From: Andy Green <andy@openmoko.com>
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Date: Wed, 30 Jul 2008 14:37:17 +0100
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Subject: [PATCH] use-gta02-glamo-mci-sd-dynamic-clock.patch
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This patch uses the new glamo-mci slow clock ratio
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patch in order to dynamically reduce SD Card clock
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rate when the GPS unit is powered on GTA02.
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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 | 12 ++++++++++++
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arch/arm/plat-s3c24xx/neo1973_pm_gps.c | 12 +++++++++---
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2 files changed, 21 insertions(+), 3 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 382837d..8e43c4a 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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@@ -85,6 +85,8 @@
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#include <linux/gta02_hdq.h>
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#include <linux/bq27000_battery.h>
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+#include "../plat-s3c24xx/neo1973_pm_gps.h"
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+
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/* arbitrates which sensor IRQ owns the shared SPI bus */
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static spinlock_t motion_irq_lock;
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@@ -1424,6 +1426,15 @@ static void gta02_glamo_mci_suspending(struct platform_device *dev)
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/* Smedia Glamo 3362 */
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+/*
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+ * we crank down SD Card clock dynamically when GPS is powered
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+ */
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+
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+static int gta02_glamo_mci_use_slow(void)
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+{
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+ return neo1973_pm_gps_is_on();
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+}
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+
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static struct glamofb_platform_data gta02_glamo_pdata = {
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.width = 43,
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.height = 58,
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@@ -1456,6 +1467,7 @@ static struct glamofb_platform_data gta02_glamo_pdata = {
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/* glamo MMC function platform data */
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.glamo_set_mci_power = gta02_glamo_mmc_set_power,
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+ .glamo_mci_use_slow = gta02_glamo_mci_use_slow,
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.glamo_irq_is_wired = glamo_irq_is_wired,
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.mci_suspending = gta02_glamo_mci_suspending,
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.mci_all_dependencies_resumed =
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diff --git a/arch/arm/plat-s3c24xx/neo1973_pm_gps.c b/arch/arm/plat-s3c24xx/neo1973_pm_gps.c
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index 8cd583d..a21b763 100644
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--- a/arch/arm/plat-s3c24xx/neo1973_pm_gps.c
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+++ b/arch/arm/plat-s3c24xx/neo1973_pm_gps.c
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@@ -39,6 +39,12 @@ struct neo1973_pm_gps_data {
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static struct neo1973_pm_gps_data neo1973_gps;
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+int neo1973_pm_gps_is_on(void)
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+{
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+ return neo1973_gps.power_was_on;
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+}
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+EXPORT_SYMBOL_GPL(neo1973_pm_gps_is_on);
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+
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/* This is the 2.8V supply for the RTC crystal, the mail clock crystal and
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* the input to VDD_RF */
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static void gps_power_2v8_set(int on)
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@@ -265,6 +271,9 @@ static int gps_power_1v5_get(void)
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/* This is the POWERON pin */
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static void gps_pwron_set(int on)
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{
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+
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+ neo1973_gps.power_was_on = !!on;
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+
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#ifdef CONFIG_MACH_NEO1973_GTA01
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if (machine_is_neo1973_gta01())
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neo1973_gpb_setpin(GTA01_GPIO_GPS_PWRON, on);
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@@ -492,9 +501,6 @@ static DEVICE_ATTR(power_sequence, 0644, power_sequence_read,
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static int gta01_pm_gps_suspend(struct platform_device *pdev,
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pm_message_t state)
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{
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-
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- neo1973_gps.power_was_on = gps_pwron_get();
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-
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#ifdef CONFIG_MACH_NEO1973_GTA01
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if (machine_is_neo1973_gta01()) {
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/* FIXME */
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--
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1.5.6.3
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