diff options
Diffstat (limited to 'target/linux/s3c24xx/patches/0191-fix-gsm-resume-problems.patch.patch')
| -rwxr-xr-x | target/linux/s3c24xx/patches/0191-fix-gsm-resume-problems.patch.patch | 138 |
1 files changed, 138 insertions, 0 deletions
diff --git a/target/linux/s3c24xx/patches/0191-fix-gsm-resume-problems.patch.patch b/target/linux/s3c24xx/patches/0191-fix-gsm-resume-problems.patch.patch new file mode 100755 index 0000000000..ed2cd98ef2 --- /dev/null +++ b/target/linux/s3c24xx/patches/0191-fix-gsm-resume-problems.patch.patch @@ -0,0 +1,138 @@ +From 5bba01c998f5c88ab2337df915e135e0d950c7a9 Mon Sep 17 00:00:00 2001 +From: Andy Green <andy@openmoko.com> +Date: Fri, 25 Jul 2008 23:06:16 +0100 +Subject: [PATCH] fix-gsm-resume-problems.patch + +Signed-off-by: Andy Green <andy@openmoko.com> +--- + arch/arm/plat-s3c24xx/neo1973_pm_gsm.c | 19 +++++++++++++++++++ + drivers/serial/s3c2410.c | 19 ++++++++++++++++++- + 2 files changed, 37 insertions(+), 1 deletions(-) + +diff --git a/arch/arm/plat-s3c24xx/neo1973_pm_gsm.c b/arch/arm/plat-s3c24xx/neo1973_pm_gsm.c +index 149b866..6b6b2f4 100644 +--- a/arch/arm/plat-s3c24xx/neo1973_pm_gsm.c ++++ b/arch/arm/plat-s3c24xx/neo1973_pm_gsm.c +@@ -18,6 +18,7 @@ + #include <linux/console.h> + #include <linux/errno.h> + #include <linux/interrupt.h> ++#include <linux/resume-dependency.h> + + #include <asm/gpio.h> + #include <asm/mach-types.h> +@@ -33,9 +34,12 @@ + struct gta01pm_priv { + int gpio_ngsm_en; + int gpio_ndl_gsm; ++ + struct console *con; + }; + ++struct resume_dependency resume_dep_gsm_uart; ++ + static struct gta01pm_priv gta01_gsm; + + static struct console *find_s3c24xx_console(void) +@@ -179,6 +183,8 @@ static DEVICE_ATTR(reset, 0644, gsm_read, gsm_write); + static DEVICE_ATTR(download, 0644, gsm_read, gsm_write); + + #ifdef CONFIG_PM ++ ++static int gta01_gsm_resume(struct platform_device *pdev); + 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 +@@ -189,11 +195,22 @@ static int gta01_gsm_suspend(struct platform_device *pdev, pm_message_t state) + if (machine_is_neo1973_gta02()) + s3c2410_gpio_setpin(GTA02_GPIO_nDL_GSM, 1); + ++ /* register our resume dependency on the appropriate UART being up */ ++ resume_dep_gsm_uart.callback = gta01_gsm_resume; ++ resume_dep_gsm_uart.context = (void *)pdev; ++ ++ s3c24xx_serial_register_resume_dependency(&resume_dep_gsm_uart, 0); ++ + return 0; + } + + static int gta01_gsm_resume(struct platform_device *pdev) + { ++ if (resume_dep_gsm_uart.called_flag != 1) ++ return 0; ++ ++ resume_dep_gsm_uart.called_flag++; /* only run once */ ++ + /* GPIO state is saved/restored by S3C2410 core GPIO driver, so we + * don't need to do much here. */ + +@@ -279,6 +296,8 @@ static int __init gta01_gsm_probe(struct platform_device *pdev) + if (machine_is_neo1973_gta02()) + s3c2410_gpio_setpin(GTA02_GPIO_nDL_GSM, 1); + ++ init_resume_dependency_list(&resume_dep_gsm_uart); ++ + return sysfs_create_group(&pdev->dev.kobj, >a01_gsm_attr_group); + } + +diff --git a/drivers/serial/s3c2410.c b/drivers/serial/s3c2410.c +index bd87c79..32cceae 100644 +--- a/drivers/serial/s3c2410.c ++++ b/drivers/serial/s3c2410.c +@@ -72,6 +72,7 @@ + #include <linux/serial.h> + #include <linux/delay.h> + #include <linux/clk.h> ++#include <linux/resume-dependency.h> + + #include <asm/io.h> + #include <asm/irq.h> +@@ -112,6 +113,8 @@ struct s3c24xx_uart_port { + struct clk *clk; + struct clk *baudclk; + struct uart_port port; ++ ++ struct resume_dependency resume_dependency; + }; + + +@@ -1088,7 +1091,9 @@ static int s3c24xx_serial_probe(struct platform_device *dev, + ourport = &s3c24xx_serial_ports[probe_index]; + probe_index++; + +- dbg("%s: initialising port %p...\n", __func__, ourport); ++ init_resume_dependency_list(&ourport->resume_dependency); ++ ++ dbg("%s: initialising port %p...\n", __FUNCTION__, ourport); + + ret = s3c24xx_serial_init_port(ourport, info, dev); + if (ret < 0) +@@ -1128,6 +1133,16 @@ static int s3c24xx_serial_suspend(struct platform_device *dev, pm_message_t stat + return 0; + } + ++void s3c24xx_serial_register_resume_dependency(struct resume_dependency * ++ resume_dependency, int uart_index) ++{ ++ struct s3c24xx_uart_port *ourport = &s3c24xx_serial_ports[uart_index]; ++ ++ register_resume_dependency(&ourport->resume_dependency, ++ resume_dependency); ++} ++EXPORT_SYMBOL(s3c24xx_serial_register_resume_dependency); ++ + static int s3c24xx_serial_resume(struct platform_device *dev) + { + struct uart_port *port = s3c24xx_dev_to_port(&dev->dev); +@@ -1141,6 +1156,8 @@ static int s3c24xx_serial_resume(struct platform_device *dev) + uart_resume_port(&s3c24xx_uart_drv, port); + } + ++ callback_all_resume_dependencies(&ourport->resume_dependency); ++ + return 0; + } + +-- +1.5.6.3 + |