target/linux/s3c24xx/patches-2.6.24/1212-fix-gsm-resume-problems.patch.patch

   1 From 2a1042fc56273fac721207597968af313751c17b Mon Sep 17 00:00:00 2001
   2 From: Andy Green <andy@openmoko.com>
   3 Date: Wed, 2 Jul 2008 22:43:53 +0100
   4 Subject: [PATCH] fix-gsm-resume-problems.patch
   5
   6 Signed-off-by: Andy Green <andy@openmoko.com>
   7 ---
   8  arch/arm/plat-s3c24xx/neo1973_pm_gsm.c |   32 ++++++++++++++++++++++++++++++++
   9  drivers/serial/s3c2410.c               |   17 +++++++++++++++++
  10  2 files changed, 49 insertions(+), 0 deletions(-)
  11
  12 diff --git a/arch/arm/plat-s3c24xx/neo1973_pm_gsm.c b/arch/arm/plat-s3c24xx/neo1973_pm_gsm.c
  13 index 149b866..d70a481 100644
  14 --- a/arch/arm/plat-s3c24xx/neo1973_pm_gsm.c
  15 +++ b/arch/arm/plat-s3c24xx/neo1973_pm_gsm.c
  16 @@ -18,6 +18,7 @@
  17  #include <linux/console.h>
  18  #include <linux/errno.h>
  19  #include <linux/interrupt.h>
  20 +#include <linux/resume-dependency.h>
  21
  22  #include <asm/gpio.h>
  23  #include <asm/mach-types.h>
  24 @@ -33,9 +34,12 @@
  25  struct gta01pm_priv {
  26         int gpio_ngsm_en;
  27          int gpio_ndl_gsm;
  28 +
  29         struct console *con;
  30  };
  31
  32 +struct resume_dependency resume_dep_gsm_uart;
  33 +
  34  static struct gta01pm_priv gta01_gsm;
  35
  36  static struct console *find_s3c24xx_console(void)
  37 @@ -179,6 +183,21 @@ static DEVICE_ATTR(reset, 0644, gsm_read, gsm_write);
  38  static DEVICE_ATTR(download, 0644, gsm_read, gsm_write);
  39
  40  #ifdef CONFIG_PM
  41 +static void gsm_resume_work(struct work_struct *w)
  42 +{
  43 +       printk(KERN_INFO "%s: waiting...\n", __FUNCTION__);
  44 +       if (gsm_autounlock_delay)
  45 +               msleep(gsm_autounlock_delay);
  46 +       if (gsm_auto_flowcontrolled) {
  47 +               if (machine_is_neo1973_gta01())
  48 +                       s3c24xx_fake_rx_interrupt(10000);
  49 +               s3c2410_gpio_cfgpin(S3C2410_GPH1, S3C2410_GPH1_nRTS0);
  50 +               gsm_auto_flowcontrolled = 0;
  51 +       }
  52 +       printk(KERN_INFO "%s: done.\n", __FUNCTION__);
  53 +}
  54 +
  55 +static int gta01_gsm_resume(struct platform_device *pdev);
  56  static int gta01_gsm_suspend(struct platform_device *pdev, pm_message_t state)
  57  {
  58         /* GPIO state is saved/restored by S3C2410 core GPIO driver, so we
  59 @@ -189,11 +208,22 @@ static int gta01_gsm_suspend(struct platform_device *pdev, pm_message_t state)
  60         if (machine_is_neo1973_gta02())
  61                 s3c2410_gpio_setpin(GTA02_GPIO_nDL_GSM, 1);
  62
  63 +       /* register our resume dependency on the appropriate UART being up */
  64 +       resume_dep_gsm_uart.callback = gta01_gsm_resume;
  65 +       resume_dep_gsm_uart.context = (void *)pdev;
  66 +
  67 +       s3c24xx_serial_register_resume_dependency(&resume_dep_gsm_uart, 0);
  68 +
  69         return 0;
  70  }
  71
  72  static int gta01_gsm_resume(struct platform_device *pdev)
  73  {
  74 +       if (resume_dep_gsm_uart.called_flag != 1)
  75 +               return 0;
  76 +
  77 +       resume_dep_gsm_uart.called_flag++; /* only run once */
  78 +
  79         /* GPIO state is saved/restored by S3C2410 core GPIO driver, so we
  80          * don't need to do much here. */
  81
  82 @@ -279,6 +309,8 @@ static int __init gta01_gsm_probe(struct platform_device *pdev)
  83         if (machine_is_neo1973_gta02())
  84                 s3c2410_gpio_setpin(GTA02_GPIO_nDL_GSM, 1);
  85
  86 +       init_resume_dependency_list(&resume_dep_gsm_uart);
  87 +
  88         return sysfs_create_group(&pdev->dev.kobj, &gta01_gsm_attr_group);
  89  }
  90
  91 diff --git a/drivers/serial/s3c2410.c b/drivers/serial/s3c2410.c
  92 index b566f42..bc6736d 100644
  93 --- a/drivers/serial/s3c2410.c
  94 +++ b/drivers/serial/s3c2410.c
  95 @@ -72,6 +72,7 @@
  96  #include <linux/serial.h>
  97  #include <linux/delay.h>
  98  #include <linux/clk.h>
  99 +#include <linux/resume-dependency.h>
 100
 101  #include <asm/io.h>
 102  #include <asm/irq.h>
 103 @@ -112,6 +113,8 @@ struct s3c24xx_uart_port {
 104         struct clk                      *clk;
 105         struct clk                      *baudclk;
 106         struct uart_port                port;
 107 +
 108 +       struct resume_dependency        resume_dependency;
 109  };
 110
 111
 112 @@ -1085,6 +1088,8 @@ static int s3c24xx_serial_probe(struct platform_device *dev,
 113         ourport = &s3c24xx_serial_ports[probe_index];
 114         probe_index++;
 115
 116 +       init_resume_dependency_list(&ourport->resume_dependency);
 117 +
 118         dbg("%s: initialising port %p...\n", __FUNCTION__, ourport);
 119
 120         ret = s3c24xx_serial_init_port(ourport, info, dev);
 121 @@ -1125,6 +1130,16 @@ static int s3c24xx_serial_suspend(struct platform_device *dev, pm_message_t stat
 122         return 0;
 123  }
 124
 125 +void s3c24xx_serial_register_resume_dependency(struct resume_dependency *
 126 +                                             resume_dependency, int uart_index)
 127 +{
 128 +       struct s3c24xx_uart_port *ourport = &s3c24xx_serial_ports[uart_index];
 129 +
 130 +       register_resume_dependency(&ourport->resume_dependency,
 131 +                                                            resume_dependency);
 132 +}
 133 +EXPORT_SYMBOL(s3c24xx_serial_register_resume_dependency);
 134 +
 135  static int s3c24xx_serial_resume(struct platform_device *dev)
 136  {
 137         struct uart_port *port = s3c24xx_dev_to_port(&dev->dev);
 138 @@ -1138,6 +1153,8 @@ static int s3c24xx_serial_resume(struct platform_device *dev)
 139                 uart_resume_port(&s3c24xx_uart_drv, port);
 140         }
 141
 142 +       callback_all_resume_dependencies(&ourport->resume_dependency);
 143 +
 144         return 0;
 145  }
 146
 147 --
 148 1.5.6.5
 149