target/linux/s3c24xx/patches/0083-fix-lcm-reinit-post-resume.patch.patch

   1 From 3d71204efba10914e339b411471877b81cf1e5d9 Mon Sep 17 00:00:00 2001
   2 From: warmcat <andy@warmcat.com>
   3 Date: Fri, 25 Jul 2008 23:06:01 +0100
   4 Subject: [PATCH] fix-lcm-reinit-post-resume.patch
   5
   6 ---
   7  arch/arm/mach-s3c2440/mach-gta02.c |   12 +++++++++
   8  drivers/mfd/glamo/glamo-core.c     |   15 ++++++++++-
   9  drivers/mfd/glamo/glamo-spi-gpio.c |   38 ++++++++++++++++++++++++++--
  10  drivers/video/display/jbt6k74.c    |   47 ++++++++++++++++++++++++++++++++----
  11  include/linux/glamofb.h            |    1 +
  12  include/linux/jbt6k74.h            |    8 ++++++
  13  6 files changed, 111 insertions(+), 10 deletions(-)
  14  create mode 100644 include/linux/jbt6k74.h
  15
  16 diff --git a/arch/arm/mach-s3c2440/mach-gta02.c b/arch/arm/mach-s3c2440/mach-gta02.c
  17 index f2b1b66..750fd97 100644
  18 --- a/arch/arm/mach-s3c2440/mach-gta02.c
  19 +++ b/arch/arm/mach-s3c2440/mach-gta02.c
  20 @@ -76,6 +76,7 @@
  21  #include <asm/plat-s3c24xx/cpu.h>
  22  #include <asm/plat-s3c24xx/pm.h>
  23  #include <asm/plat-s3c24xx/udc.h>
  24 +#include <linux/jbt6k74.h>
  25
  26  #include <linux/glamofb.h>
  27
  28 @@ -756,10 +757,21 @@ static struct s3c2410_ts_mach_info gta02_ts_cfg = {
  29
  30  /* SPI: LCM control interface attached to Glamo3362 */
  31
  32 +void gta02_jbt6k74_reset(int devidx, int level)
  33 +{
  34 +       glamo_lcm_reset(level);
  35 +}
  36 +
  37 +
  38 +const struct jbt6k74_platform_data jbt6k74_pdata = {
  39 +       .reset          = gta02_jbt6k74_reset,
  40 +};
  41 +
  42  static struct spi_board_info gta02_spi_board_info[] = {
  43         {
  44                 .modalias       = "jbt6k74",
  45                 /* platform_data */
  46 +               .platform_data  = &jbt6k74_pdata,
  47                 /* controller_data */
  48                 /* irq */
  49                 .max_speed_hz   = 10 * 1000 * 1000,
  50 diff --git a/drivers/mfd/glamo/glamo-core.c b/drivers/mfd/glamo/glamo-core.c
  51 index ffa4945..2076e61 100644
  52 --- a/drivers/mfd/glamo/glamo-core.c
  53 +++ b/drivers/mfd/glamo/glamo-core.c
  54 @@ -513,6 +513,17 @@ void glamo_engine_reset(struct glamo_core *glamo, enum glamo_engine engine)
  55  }
  56  EXPORT_SYMBOL_GPL(glamo_engine_reset);
  57
  58 +void glamo_lcm_reset(int level)
  59 +{
  60 +       if (!glamo_handle)
  61 +               return;
  62 +
  63 +       glamo_gpio_setpin(glamo_handle, GLAMO_GPIO4, level);
  64 +       glamo_gpio_cfgpin(glamo_handle, GLAMO_GPIO4_OUTPUT);
  65 +
  66 +}
  67 +EXPORT_SYMBOL_GPL(glamo_lcm_reset);
  68 +
  69  enum glamo_pll {
  70         GLAMO_PLL1,
  71         GLAMO_PLL2,
  72 @@ -1142,8 +1153,8 @@ static int glamo_resume(struct platform_device *pdev)
  73  static struct platform_driver glamo_driver = {
  74         .probe          = glamo_probe,
  75         .remove         = glamo_remove,
  76 -       .suspend        = glamo_suspend,
  77 -       .resume         = glamo_resume,
  78 +       .suspend_late   = glamo_suspend,
  79 +       .resume_early   = glamo_resume,
  80         .driver         = {
  81                 .name   = "glamo3362",
  82                 .owner  = THIS_MODULE,
  83 diff --git a/drivers/mfd/glamo/glamo-spi-gpio.c b/drivers/mfd/glamo/glamo-spi-gpio.c
  84 index 73926bd..eda7322 100644
  85 --- a/drivers/mfd/glamo/glamo-spi-gpio.c
  86 +++ b/drivers/mfd/glamo/glamo-spi-gpio.c
  87 @@ -224,14 +224,46 @@ static int glamo_spigpio_remove(struct platform_device *pdev)
  88         return 0;
  89  }
  90
  91 -#define glamo_spigpio_suspend NULL
  92 +/*#define glamo_spigpio_suspend NULL
  93  #define glamo_spigpio_resume NULL
  94 +*/
  95 +
  96 +
  97 +#ifdef CONFIG_PM
  98 +static int glamo_spigpio_suspend(struct platform_device *pdev, pm_message_t state)
  99 +{
 100 +       return 0;
 101 +}
 102 +
 103 +static int glamo_spigpio_resume(struct platform_device *pdev)
 104 +{
 105 +       struct glamo_spigpio *sp = platform_get_drvdata(pdev);
 106 +
 107 +       if (!sp)
 108 +               return 0;
 109 +
 110 +       /* set state of spi pins */
 111 +       glamo_gpio_setpin(sp->glamo, sp->info->pin_clk, 0);
 112 +       glamo_gpio_setpin(sp->glamo, sp->info->pin_mosi, 0);
 113 +       glamo_gpio_setpin(sp->glamo, sp->info->pin_cs, 1);
 114 +
 115 +       glamo_gpio_cfgpin(sp->glamo, sp->info->pin_clk);
 116 +       glamo_gpio_cfgpin(sp->glamo, sp->info->pin_mosi);
 117 +       glamo_gpio_cfgpin(sp->glamo, sp->info->pin_cs);
 118 +       if (sp->info->pin_miso)
 119 +               glamo_gpio_cfgpin(sp->glamo, sp->info->pin_miso);
 120 +
 121 +       return 0;
 122 +}
 123 +#endif
 124
 125  static struct platform_driver glamo_spi_drv = {
 126         .probe          = glamo_spigpio_probe,
 127         .remove         = glamo_spigpio_remove,
 128 -       .suspend        = glamo_spigpio_suspend,
 129 -       .resume         = glamo_spigpio_resume,
 130 +#ifdef CONFIG_PM
 131 +       .suspend_late   = glamo_spigpio_suspend,
 132 +       .resume_early   = glamo_spigpio_resume,
 133 +#endif
 134         .driver         = {
 135                 .name   = "glamo-spi-gpio",
 136                 .owner  = THIS_MODULE,
 137 diff --git a/drivers/video/display/jbt6k74.c b/drivers/video/display/jbt6k74.c
 138 index d021d7e..d7e9442 100644
 139 --- a/drivers/video/display/jbt6k74.c
 140 +++ b/drivers/video/display/jbt6k74.c
 141 @@ -27,6 +27,8 @@
 142  #include <linux/device.h>
 143  #include <linux/platform_device.h>
 144  #include <linux/delay.h>
 145 +#include <linux/workqueue.h>
 146 +#include <linux/jbt6k74.h>
 147
 148  #include <linux/spi/spi.h>
 149
 150 @@ -114,11 +116,15 @@ struct jbt_info {
 151         struct mutex lock;              /* protects tx_buf and reg_cache */
 152         u16 tx_buf[8];
 153         u16 reg_cache[0xEE];
 154 +       struct work_struct work;
 155  };
 156
 157  #define JBT_COMMAND    0x000
 158  #define JBT_DATA       0x100
 159
 160 +static void jbt_resume_work(struct work_struct *work);
 161 +
 162 +
 163  static int jbt_reg_write_nodata(struct jbt_info *jbt, u8 reg)
 164  {
 165         int rc;
 166 @@ -130,6 +136,9 @@ static int jbt_reg_write_nodata(struct jbt_info *jbt, u8 reg)
 167                        1*sizeof(u16));
 168         if (rc == 0)
 169                 jbt->reg_cache[reg] = 0;
 170 +       else
 171 +               printk(KERN_ERR"jbt_reg_write_nodata spi_write ret %d\n",
 172 +                      rc);
 173
 174         mutex_unlock(&jbt->lock);
 175
 176 @@ -149,6 +158,8 @@ static int jbt_reg_write(struct jbt_info *jbt, u8 reg, u8 data)
 177                        2*sizeof(u16));
 178         if (rc == 0)
 179                 jbt->reg_cache[reg] = data;
 180 +       else
 181 +               printk(KERN_ERR"jbt_reg_write spi_write ret %d\n", rc);
 182
 183         mutex_unlock(&jbt->lock);
 184
 185 @@ -169,6 +180,8 @@ static int jbt_reg_write16(struct jbt_info *jbt, u8 reg, u16 data)
 186                        3*sizeof(u16));
 187         if (rc == 0)
 188                 jbt->reg_cache[reg] = data;
 189 +       else
 190 +               printk(KERN_ERR"jbt_reg_write16 spi_write ret %d\n", rc);
 191
 192         mutex_unlock(&jbt->lock);
 193
 194 @@ -563,6 +576,8 @@ static int __devinit jbt_probe(struct spi_device *spi)
 195         if (!jbt)
 196                 return -ENOMEM;
 197
 198 +       INIT_WORK(&jbt->work, jbt_resume_work);
 199 +
 200         jbt->spi_dev = spi;
 201         jbt->state = JBT_STATE_DEEP_STANDBY;
 202         mutex_init(&jbt->lock);
 203 @@ -618,28 +633,50 @@ static int __devexit jbt_remove(struct spi_device *spi)
 204  static int jbt_suspend(struct spi_device *spi, pm_message_t state)
 205  {
 206         struct jbt_info *jbt = dev_get_drvdata(&spi->dev);
 207 +       struct jbt6k74_platform_data *jbt6k74_pdata = spi->dev.platform_data;
 208
 209         /* Save mode for resume */
 210         jbt->last_state = jbt->state;
 211         jbt6k74_enter_state(jbt, JBT_STATE_DEEP_STANDBY);
 212
 213 +       (jbt6k74_pdata->reset)(0, 0);
 214 +
 215         return 0;
 216  }
 217
 218 -static int jbt_resume(struct spi_device *spi)
 219 +static void jbt_resume_work(struct work_struct *work)
 220  {
 221 -       struct jbt_info *jbt = dev_get_drvdata(&spi->dev);
 222 +       struct jbt_info *jbt = container_of(work, struct jbt_info, work);
 223 +
 224 +       printk(KERN_INFO"jbt_resume_work waiting...\n");
 225 +       msleep(2000);
 226 +       printk(KERN_INFO"jbt_resume_work GO...\n");
 227
 228 -       jbt6k74_enter_state(jbt, jbt->last_state);
 229 +       jbt6k74_enter_state(jbt, JBT_STATE_DEEP_STANDBY);
 230 +       msleep(100);
 231
 232         switch (jbt->last_state) {
 233 -       case JBT_STATE_NORMAL:
 234         case JBT_STATE_QVGA_NORMAL:
 235 -               jbt6k74_display_onoff(jbt, 1);
 236 +               jbt6k74_enter_state(jbt, JBT_STATE_QVGA_NORMAL);
 237                 break;
 238         default:
 239 +               jbt6k74_enter_state(jbt, JBT_STATE_NORMAL);
 240                 break;
 241         }
 242 +       jbt6k74_display_onoff(jbt, 1);
 243 +
 244 +       printk(KERN_INFO"jbt_resume_work done...\n");
 245 +}
 246 +
 247 +static int jbt_resume(struct spi_device *spi)
 248 +{
 249 +       struct jbt_info *jbt = dev_get_drvdata(&spi->dev);
 250 +       struct jbt6k74_platform_data *jbt6k74_pdata = spi->dev.platform_data;
 251 +
 252 +       (jbt6k74_pdata->reset)(0, 1);
 253 +
 254 +       if (!schedule_work(&jbt->work))
 255 +               dev_err(&spi->dev, "Unable to schedule LCM wakeup work\n");
 256
 257         return 0;
 258  }
 259 diff --git a/include/linux/glamofb.h b/include/linux/glamofb.h
 260 index 24742a2..75eefef 100644
 261 --- a/include/linux/glamofb.h
 262 +++ b/include/linux/glamofb.h
 263 @@ -35,5 +35,6 @@ struct glamofb_platform_data {
 264
 265  void glamofb_cmd_mode(struct glamofb_handle *gfb, int on);
 266  int glamofb_cmd_write(struct glamofb_handle *gfb, u_int16_t val);
 267 +void glamo_lcm_reset(int level);
 268
 269  #endif
 270 diff --git a/include/linux/jbt6k74.h b/include/linux/jbt6k74.h
 271 new file mode 100644
 272 index 0000000..3fbe178
 273 --- /dev/null
 274 +++ b/include/linux/jbt6k74.h
 275 @@ -0,0 +1,8 @@
 276 +#ifndef __JBT6K74_H__
 277 +#define __JBT6K74_H__
 278 +
 279 +struct jbt6k74_platform_data {
 280 +       void (* reset)(int devindex, int level);
 281 +};
 282 +
 283 +#endif
 284 --
 285 1.5.6.3
 286