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Diffstat (limited to 'target/linux/s3c24xx/patches/0191-fix-gsm-resume-problems.patch.patch')
-rwxr-xr-xtarget/linux/s3c24xx/patches/0191-fix-gsm-resume-problems.patch.patch138
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, &gta01_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
+