mirror of
git://projects.qi-hardware.com/openwrt-xburst.git
synced 2024-12-27 15:15:32 +02:00
fc54b9bf15
(stable-branch of Openmoko) git-svn-id: svn://svn.openwrt.org/openwrt/trunk@13613 3c298f89-4303-0410-b956-a3cf2f4a3e73
155 lines
4.9 KiB
Diff
155 lines
4.9 KiB
Diff
From 7e5f528cb1448ac31a4e3a45c7c953ea95869d4d Mon Sep 17 00:00:00 2001
|
|
From: Mike Westerhof <mwester@dls.net>
|
|
Date: Fri, 8 Aug 2008 13:08:03 +0100
|
|
Subject: [PATCH] gta0x-add-minimal-GSM-flowcontrol.patch
|
|
|
|
Add the basic GSM flowcontrol code.
|
|
|
|
Signed-off-by: Mike Westerhof <mwester@dls.net>
|
|
---
|
|
arch/arm/mach-s3c2410/mach-gta01.c | 3 ++
|
|
arch/arm/mach-s3c2440/mach-gta02.c | 3 ++
|
|
arch/arm/plat-s3c24xx/neo1973_pm_gsm.c | 36 ++++++++++++++++++++++++++++++++
|
|
3 files changed, 42 insertions(+), 0 deletions(-)
|
|
|
|
diff --git a/arch/arm/mach-s3c2410/mach-gta01.c b/arch/arm/mach-s3c2410/mach-gta01.c
|
|
index e518de7..f3f87cf 100644
|
|
--- a/arch/arm/mach-s3c2410/mach-gta01.c
|
|
+++ b/arch/arm/mach-s3c2410/mach-gta01.c
|
|
@@ -657,9 +657,12 @@ static void __init gta01_map_io(void)
|
|
s3c24xx_init_uarts(gta01_uartcfgs, ARRAY_SIZE(gta01_uartcfgs));
|
|
}
|
|
|
|
+extern int gta_gsm_interrupts;
|
|
+
|
|
static irqreturn_t gta01_modem_irq(int irq, void *param)
|
|
{
|
|
printk(KERN_DEBUG "GSM wakeup interrupt (IRQ %d)\n", irq);
|
|
+ gta_gsm_interrupts++;
|
|
return IRQ_HANDLED;
|
|
}
|
|
|
|
diff --git a/arch/arm/mach-s3c2440/mach-gta02.c b/arch/arm/mach-s3c2440/mach-gta02.c
|
|
index 8e43c4a..1d7d262 100644
|
|
--- a/arch/arm/mach-s3c2440/mach-gta02.c
|
|
+++ b/arch/arm/mach-s3c2440/mach-gta02.c
|
|
@@ -1531,9 +1531,12 @@ static void __init gta02_map_io(void)
|
|
s3c24xx_init_uarts(gta02_uartcfgs, ARRAY_SIZE(gta02_uartcfgs));
|
|
}
|
|
|
|
+extern int gta_gsm_interrupts;
|
|
+
|
|
static irqreturn_t gta02_modem_irq(int irq, void *param)
|
|
{
|
|
printk(KERN_DEBUG "modem wakeup interrupt\n");
|
|
+ gta_gsm_interrupts++;
|
|
return IRQ_HANDLED;
|
|
}
|
|
|
|
diff --git a/arch/arm/plat-s3c24xx/neo1973_pm_gsm.c b/arch/arm/plat-s3c24xx/neo1973_pm_gsm.c
|
|
index dd63506..0543905 100644
|
|
--- a/arch/arm/plat-s3c24xx/neo1973_pm_gsm.c
|
|
+++ b/arch/arm/plat-s3c24xx/neo1973_pm_gsm.c
|
|
@@ -34,6 +34,9 @@
|
|
extern void s3c24xx_serial_register_resume_dependency(struct resume_dependency *
|
|
resume_dependency, int uart_index);
|
|
|
|
+int gta_gsm_interrupts;
|
|
+EXPORT_SYMBOL(gta_gsm_interrupts);
|
|
+
|
|
struct gta01pm_priv {
|
|
int gpio_ngsm_en;
|
|
int gpio_ndl_gsm;
|
|
@@ -80,6 +83,9 @@ static ssize_t gsm_read(struct device *dev, struct device_attribute *attr,
|
|
if (!s3c2410_gpio_getpin(GTA02_GPIO_nDL_GSM))
|
|
goto out_1;
|
|
}
|
|
+ } else if (!strcmp(attr->attr.name, "flowcontrolled")) {
|
|
+ if (s3c2410_gpio_getcfg(S3C2410_GPH1) == S3C2410_GPIO_OUTPUT)
|
|
+ goto out_1;
|
|
}
|
|
|
|
return strlcpy(buf, "0\n", 3);
|
|
@@ -176,6 +182,13 @@ static ssize_t gsm_write(struct device *dev, struct device_attribute *attr,
|
|
gta01_gsm.gpio_ndl_gsm = !on;
|
|
s3c2410_gpio_setpin(GTA02_GPIO_nDL_GSM, !on);
|
|
}
|
|
+ } else if (!strcmp(attr->attr.name, "flowcontrolled")) {
|
|
+ if (on) {
|
|
+ gta_gsm_interrupts = 0;
|
|
+ s3c2410_gpio_setpin(S3C2410_GPH1, 1);
|
|
+ s3c2410_gpio_cfgpin(S3C2410_GPH1, S3C2410_GPH1_OUTP);
|
|
+ } else
|
|
+ s3c2410_gpio_cfgpin(S3C2410_GPH1, S3C2410_GPH1_nRTS0);
|
|
}
|
|
|
|
return count;
|
|
@@ -184,6 +197,7 @@ static ssize_t gsm_write(struct device *dev, struct device_attribute *attr,
|
|
static DEVICE_ATTR(power_on, 0644, gsm_read, gsm_write);
|
|
static DEVICE_ATTR(reset, 0644, gsm_read, gsm_write);
|
|
static DEVICE_ATTR(download, 0644, gsm_read, gsm_write);
|
|
+static DEVICE_ATTR(flowcontrolled, 0644, gsm_read, gsm_write);
|
|
|
|
#ifdef CONFIG_PM
|
|
static int gta01_gsm_resume(struct platform_device *pdev);
|
|
@@ -192,6 +206,11 @@ static int gta01_gsm_suspend(struct platform_device *pdev, pm_message_t state)
|
|
/* GPIO state is saved/restored by S3C2410 core GPIO driver, so we
|
|
* don't need to do much here. */
|
|
|
|
+ /* If flowcontrol asserted, abort if GSM already interrupted */
|
|
+ if (s3c2410_gpio_getcfg(S3C2410_GPH1) == S3C2410_GPIO_OUTPUT) {
|
|
+ if (gta_gsm_interrupts)
|
|
+ goto busy;
|
|
+ }
|
|
|
|
/* disable DL GSM to prevent jack_insert becoming 'floating' */
|
|
if (machine_is_neo1973_gta02())
|
|
@@ -204,6 +223,20 @@ static int gta01_gsm_suspend(struct platform_device *pdev, pm_message_t state)
|
|
s3c24xx_serial_register_resume_dependency(&resume_dep_gsm_uart, 0);
|
|
|
|
return 0;
|
|
+
|
|
+busy:
|
|
+ return -EBUSY;
|
|
+}
|
|
+
|
|
+static int
|
|
+gta01_gsm_suspend_late(struct platform_device *pdev, pm_message_t state)
|
|
+{
|
|
+ /* Last chance: abort if GSM already interrupted */
|
|
+ if (s3c2410_gpio_getcfg(S3C2410_GPH1) == S3C2410_GPIO_OUTPUT) {
|
|
+ if (gta_gsm_interrupts)
|
|
+ return -EBUSY;
|
|
+ }
|
|
+ return 0;
|
|
}
|
|
|
|
static int gta01_gsm_resume(struct platform_device *pdev)
|
|
@@ -228,6 +261,7 @@ static int gta01_gsm_resume(struct platform_device *pdev)
|
|
}
|
|
#else
|
|
#define gta01_gsm_suspend NULL
|
|
+#define gta01_gsm_suspend_late NULL
|
|
#define gta01_gsm_resume NULL
|
|
#endif
|
|
|
|
@@ -235,6 +269,7 @@ static struct attribute *gta01_gsm_sysfs_entries[] = {
|
|
&dev_attr_power_on.attr,
|
|
&dev_attr_reset.attr,
|
|
&dev_attr_download.attr,
|
|
+ &dev_attr_flowcontrolled.attr,
|
|
NULL
|
|
};
|
|
|
|
@@ -314,6 +349,7 @@ static struct platform_driver gta01_gsm_driver = {
|
|
.probe = gta01_gsm_probe,
|
|
.remove = gta01_gsm_remove,
|
|
.suspend = gta01_gsm_suspend,
|
|
+ .suspend_late = gta01_gsm_suspend_late,
|
|
.resume = gta01_gsm_resume,
|
|
.driver = {
|
|
.name = "neo1973-pm-gsm",
|
|
--
|
|
1.5.6.5
|
|
|