diff options
Diffstat (limited to 'target/linux/s3c24xx/patches-2.6.24/1262-gta0x-add-minimal-GSM-flowcontrol.patch.patch')
| -rw-r--r-- | target/linux/s3c24xx/patches-2.6.24/1262-gta0x-add-minimal-GSM-flowcontrol.patch.patch | 154 |
1 files changed, 154 insertions, 0 deletions
diff --git a/target/linux/s3c24xx/patches-2.6.24/1262-gta0x-add-minimal-GSM-flowcontrol.patch.patch b/target/linux/s3c24xx/patches-2.6.24/1262-gta0x-add-minimal-GSM-flowcontrol.patch.patch new file mode 100644 index 0000000000..263bc471bb --- /dev/null +++ b/target/linux/s3c24xx/patches-2.6.24/1262-gta0x-add-minimal-GSM-flowcontrol.patch.patch @@ -0,0 +1,154 @@ +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 + |