src/patches/suse-2.6.27.39/patches.suse/radeon-monitor-jsxx-quirk.patch

   1 Subject: [PATCH] Add quirk for the graphics adapter in some JSxx
   2 From: Tony Breeds <tony@bakeyournoodle.com>
   3 References: 461002 - LTC50817
   4
   5 These devices are set to 640x480 by firmware, switch them to
   6 800x600@60.
   7
   8 Signed-off-by: Tony Breeds <tony@bakeyournoodle.com>
   9 Signed-off-by: Olaf Hering <olh@suse.de>
  10 ---
  11  drivers/video/aty/radeon_monitor.c |   35 +++++++++++++++++++++++++++++++++++
  12  1 file changed, 35 insertions(+)
  13
  14 --- a/drivers/video/aty/radeon_monitor.c
  15 +++ b/drivers/video/aty/radeon_monitor.c
  16 @@ -727,6 +727,25 @@ static void radeon_videomode_to_var(stru
  17         var->vmode = mode->vmode;
  18  }
  19
  20 +#ifdef CONFIG_PPC_PSERIES
  21 +static int is_powerblade(const char *model)
  22 +{
  23 +       struct device_node *root;
  24 +       const char* cp;
  25 +       int len, l, rc = 0;
  26 +
  27 +       root = of_find_node_by_path("/");
  28 +       if (root && model) {
  29 +               l = strlen(model);
  30 +               cp = of_get_property(root, "model", &len);
  31 +               if (cp)
  32 +                       rc = memcmp(model, cp, min(len, l)) == 0;
  33 +               of_node_put(root);
  34 +       }
  35 +       return rc;
  36 +}
  37 +#endif
  38 +
  39  /*
  40   * Build the modedb for head 1 (head 2 will come later), check panel infos
  41   * from either BIOS or EDID, and pick up the default mode
  42 @@ -862,6 +881,22 @@ void __devinit radeon_check_modes(struct
  43                         has_default_mode = 1;
  44         }
  45
  46 +#ifdef CONFIG_PPC_PSERIES
  47 +       if (!has_default_mode && (
  48 +               is_powerblade("IBM,8842") || /* JS20 */
  49 +               is_powerblade("IBM,8844") || /* JS21 */
  50 +               is_powerblade("IBM,7998") || /* JS12/JS21/JS22 */
  51 +               is_powerblade("IBM,0792") || /* QS21 */
  52 +               is_powerblade("IBM,0793")    /* QS22 */
  53 +           )) {
  54 +               printk("Falling back to 800x600 on JSxx hardware\n");
  55 +               if (fb_find_mode(&info->var, info, "800x600@60",
  56 +                                info->monspecs.modedb,
  57 +                                info->monspecs.modedb_len, NULL, 8) != 0)
  58 +                       has_default_mode = 1;
  59 +       }
  60 +#endif
  61 +
  62         /*
  63          * Still no mode, let's pick up a default from the db
  64          */