mirror of https://github.com/hak5/openwrt.git
86 lines
2.8 KiB
Diff
86 lines
2.8 KiB
Diff
|
From d685e208663ffc9bd454af6698cb2945e60a3ba8 Mon Sep 17 00:00:00 2001
|
||
|
|
From: Holger Freyther <zecke@openmoko.org>
|
||
|
|
Date: Sun, 13 Apr 2008 07:25:55 +0100
|
||
|
|
Subject: [PATCH] Enable GPS only if it was powered on before suspending the device
|
||
|
|
|
||
|
|
Similar to the neo1974_pm_gsm.c keep a static struct around. On suspend
|
||
|
|
we will save the current power state, on resume we will use this
|
||
|
|
information to enable power of the GPS only when it was powered on before.
|
||
|
|
This is passing basic tests with screen /dev/ttySAC1 on suspend and resume.
|
||
|
|
|
||
|
|
Only do this for the GTA02 as I don't have a gllin setup for the GTA01
|
||
|
|
|
||
|
|
I wonder why the suspend and resume code is not using gps_pwron_set and why
|
||
|
|
for the GTA02 we need to keep the state of the GPIOs, this should be done
|
||
|
|
by the s3c code.
|
||
|
|
|
||
|
|
Signed-Off-by: Holger Frether <zecke@openmoko.org>
|
||
|
|
---
|
||
|
|
arch/arm/plat-s3c24xx/neo1973_pm_gps.c | 22 ++++++++++++++--------
|
||
|
|
1 files changed, 14 insertions(+), 8 deletions(-)
|
||
|
|
|
||
|
|
diff --git a/arch/arm/plat-s3c24xx/neo1973_pm_gps.c b/arch/arm/plat-s3c24xx/neo1973_pm_gps.c
|
||
|
|
index e8cfb96..b12f7bc 100644
|
||
|
|
--- a/arch/arm/plat-s3c24xx/neo1973_pm_gps.c
|
||
|
|
+++ b/arch/arm/plat-s3c24xx/neo1973_pm_gps.c
|
||
|
|
@@ -30,6 +30,12 @@
|
||
|
|
#include <linux/pcf50633.h>
|
||
|
|
#endif
|
||
|
|
|
||
|
|
+struct neo1973_pm_gps_data {
|
||
|
|
+ int power_was_on;
|
||
|
|
+};
|
||
|
|
+
|
||
|
|
+static struct neo1973_pm_gps_data neo1973_gps;
|
||
|
|
+
|
||
|
|
/* 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)
|
||
|
|
@@ -266,8 +272,8 @@ static void gps_pwron_set(int on)
|
||
|
|
if (on)
|
||
|
|
pcf50633_voltage_set(pcf50633_global,
|
||
|
|
PCF50633_REGULATOR_LDO5, 3000);
|
||
|
|
- pcf50633_onoff_set(pcf50633_global,
|
||
|
|
- PCF50633_REGULATOR_LDO5, on);
|
||
|
|
+ pcf50633_onoff_set(pcf50633_global,
|
||
|
|
+ PCF50633_REGULATOR_LDO5, on);
|
||
|
|
}
|
||
|
|
#endif /* CONFIG_MACH_NEO1973_GTA02 */
|
||
|
|
}
|
||
|
|
@@ -476,6 +482,9 @@ 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 */
|
||
|
|
@@ -491,9 +500,7 @@ static int gta01_pm_gps_suspend(struct platform_device *pdev,
|
||
|
|
/* don't let RX from unpowered GPS float */
|
||
|
|
s3c2410_gpio_pullup(S3C2410_GPH5, 1);
|
||
|
|
|
||
|
|
- /* FIXME */
|
||
|
|
- pcf50633_onoff_set(pcf50633_global,
|
||
|
|
- PCF50633_REGULATOR_LDO5, 0);
|
||
|
|
+ gps_pwron_set(0);
|
||
|
|
}
|
||
|
|
#endif /* CONFIG_MACH_NEO1973_GTA02 */
|
||
|
|
|
||
|
|
@@ -519,9 +526,8 @@ static int gta01_pm_gps_resume(struct platform_device *pdev)
|
||
|
|
/* 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);
|
||
|
|
+ if (neo1973_gps.power_was_on)
|
||
|
|
+ gps_pwron_set(1);
|
||
|
|
#endif /* CONFIG_MACH_NEO1973_GTA02 */
|
||
|
|
}
|
||
|
|
return 0;
|
||
|
|
--
|
||
|
|
1.5.6.5
|
||
|
|
|