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From 0df922c0e1c6cdbfb8b2d2d0f7b474d09d121510 Mon Sep 17 00:00:00 2001
From: warmcat <andy@warmcat.com>
Date: Sun, 13 Apr 2008 07:25:51 +0100
Subject: [PATCH] fix-suspend-gps-tx-level.patch
We used to drive output high into GPS unit in suspend
Signed-off-by: Andy Green <andy@openmoko.com>
---
arch/arm/plat-s3c24xx/neo1973_pm_gps.c | 14 ++++++++++++++
1 files changed, 14 insertions(+), 0 deletions(-)
diff --git a/arch/arm/plat-s3c24xx/neo1973_pm_gps.c b/arch/arm/plat-s3c24xx/neo1973_pm_gps.c
index 6bd8054..e8cfb96 100644
--- a/arch/arm/plat-s3c24xx/neo1973_pm_gps.c
+++ b/arch/arm/plat-s3c24xx/neo1973_pm_gps.c
@@ -485,6 +485,12 @@ static int gta01_pm_gps_suspend(struct platform_device *pdev,
#ifdef CONFIG_MACH_NEO1973_GTA02
if (machine_is_neo1973_gta02()) {
+ /* take care not to power unpowered GPS from GPIO */
+ s3c2410_gpio_cfgpin(S3C2410_GPH4, S3C2410_GPH4_OUTP);
+ s3c2410_gpio_setpin(S3C2410_GPH4, 0);
+ /* don't let RX from unpowered GPS float */
+ s3c2410_gpio_pullup(S3C2410_GPH5, 1);
+
/* FIXME */
pcf50633_onoff_set(pcf50633_global,
PCF50633_REGULATOR_LDO5, 0);
@@ -505,6 +511,14 @@ static int gta01_pm_gps_resume(struct platform_device *pdev)
#ifdef CONFIG_MACH_NEO1973_GTA02
if (machine_is_neo1973_gta02()) {
+ /*
+ * resume TXD1 function since we power GPS now... er..
+ * WTF? FIXME We always power GPS on resume ??
+ */
+ s3c2410_gpio_cfgpin(S3C2410_GPH4, S3C2410_GPH4_TXD1);
+ /* remove pulldown now it won't be floating any more */
+ s3c2410_gpio_pullup(S3C2410_GPH5, 0);
+
/* FIXME */
pcf50633_onoff_set(pcf50633_global,
PCF50633_REGULATOR_LDO5, 1);
--
1.5.6.5
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