org.handhelds.familiar/packages/linux/opensimpad/simpad-backlight-if.patch

   1
   2 #
   3 # Patch managed by http://www.holgerschurig.de/patcher.html
   4 #
   5
   6 --- linux-2.4.27/drivers/video/mq200fb.c~simpad-backlight-if
   7 +++ linux-2.4.27/drivers/video/mq200fb.c
   8 @@ -82,6 +82,20 @@
   9         write:  proc_write_reg
  10  };
  11
  12 +#ifdef CONFIG_SA1100_SIMPAD
  13 +
  14 +static ssize_t proc_read_light(struct file * file, char * buf,
  15 +               size_t nbytes, loff_t *ppos);
  16 +static ssize_t proc_write_light(struct file * file, const char * buffer,
  17 +               size_t count, loff_t *ppos);
  18 +
  19 +static struct file_operations proc_light_operations = {
  20 +       read:   proc_read_light,
  21 +       write:  proc_write_light
  22 +};
  23 +#endif
  24 +
  25 +
  26  typedef struct sa1110_reg_entry {
  27         u32 phyaddr;
  28         char* name;
  29 @@ -622,6 +636,20 @@
  30         }
  31      }
  32
  33 +#ifdef CONFIG_SA1100_SIMPAD
  34 +       entry = create_proc_entry("backlight",
  35 +                                S_IRWXU | S_IRWXG | S_IRWXO,
  36 +                                mq200dir);
  37 +       if(entry) {
  38 +         entry->proc_fops = &proc_light_operations;
  39 +       }
  40 +    else {
  41 +         printk( KERN_ERR
  42 +                 "mq200fb: can't create /proc/" MQ200_DIRNAME
  43 +                 "/backlight\n");
  44 +         return(-ENOMEM);
  45 +    }
  46 + #endif
  47
  48  #ifdef MQ_SA1110
  49
  50 @@ -1879,7 +1907,7 @@
  51  static void writeBrightness(void *pMQMMIO, int brightness)
  52  {
  53      unsigned long dutyCycle, pwmcontrol;
  54 -    int MAX_BRIGHT_REG = 0x000000fc; /* int 254 */
  55 +    int MAX_BRIGHT_REG = 0x000000fe; /* int 254 */
  56
  57      if(brightness > MAX_BRIGHT_REG)
  58        return;
  59 @@ -1961,3 +1989,43 @@
  60         return (count+endp-buffer);
  61  }
  62
  63 +#ifdef CONFIG_SA1100_SIMPAD
  64 +
  65 +#define SIMPAD_BACKLIGHT_MASK  0x00a10044
  66 +
  67 +static int proc_read_light(struct file * file, char * buf,
  68 +               size_t nbytes, loff_t *ppos)
  69 +{
  70 +       char outputbuf[15];
  71 +       int count;
  72 +       u32 pwmctl;
  73 +       if (*ppos>0) /* Assume reading completed in previous read*/
  74 +               return 0;
  75 +
  76 +       pwmctl = *((volatile *) mq200_p2v(0x4be0e03c));
  77 +       pwmctl &= ~SIMPAD_BACKLIGHT_MASK;
  78 +       pwmctl = pwmctl >> 8;
  79 +       pwmctl = 254 - pwmctl;
  80 +
  81 +       count = sprintf(outputbuf, "%d\n",pwmctl);
  82 +       *ppos+=count;
  83 +       if (count>nbytes)  /* Assume output can be read at one time */
  84 +               return -EINVAL;
  85 +       if (copy_to_user(buf, outputbuf, count))
  86 +               return -EFAULT;
  87 +       return count;
  88 +}
  89 +
  90 +static ssize_t proc_write_light(struct file * file, const char * buffer,
  91 +               size_t count, loff_t *ppos)
  92 +{
  93 +       void * pMQMMIO = (void *) mqMmioAddr;
  94 +       char *endp;
  95 +       unsigned long newvalue = simple_strtoul(buffer,&endp,0);
  96 +       if (newvalue > 254)
  97 +               newvalue = 254;
  98 +       writeBrightness(pMQMMIO,newvalue);
  99 +       mq200_backlight(pMQMMIO,(int)newvalue);
 100 +       return (count+endp-buffer);
 101 +}
 102 +#endif