target/linux/ar71xx/patches-3.2/401-mtd-physmap-add-lock-unlock.patch

   1 --- a/drivers/mtd/maps/physmap.c
   2 +++ b/drivers/mtd/maps/physmap.c
   3 @@ -29,6 +29,66 @@ struct physmap_flash_info {
   4         struct map_info         map[MAX_RESOURCES];
   5  };
   6
   7 +static struct platform_device *physmap_map2pdev(struct map_info *map)
   8 +{
   9 +       return (struct platform_device *) map->map_priv_1;
  10 +}
  11 +
  12 +static void physmap_lock(struct map_info *map)
  13 +{
  14 +       struct platform_device *pdev;
  15 +       struct physmap_flash_data *physmap_data;
  16 +
  17 +       pdev = physmap_map2pdev(map);
  18 +       physmap_data = pdev->dev.platform_data;
  19 +       physmap_data->lock(pdev);
  20 +}
  21 +
  22 +static void physmap_unlock(struct map_info *map)
  23 +{
  24 +       struct platform_device *pdev;
  25 +       struct physmap_flash_data *physmap_data;
  26 +
  27 +       pdev = physmap_map2pdev(map);
  28 +       physmap_data = pdev->dev.platform_data;
  29 +       physmap_data->unlock(pdev);
  30 +}
  31 +
  32 +static map_word physmap_flash_read_lock(struct map_info *map, unsigned long ofs)
  33 +{
  34 +       map_word ret;
  35 +
  36 +       physmap_lock(map);
  37 +       ret = inline_map_read(map, ofs);
  38 +       physmap_unlock(map);
  39 +
  40 +       return ret;
  41 +}
  42 +
  43 +static void physmap_flash_write_lock(struct map_info *map, map_word d,
  44 +                                    unsigned long ofs)
  45 +{
  46 +       physmap_lock(map);
  47 +       inline_map_write(map, d, ofs);
  48 +       physmap_unlock(map);
  49 +}
  50 +
  51 +static void physmap_flash_copy_from_lock(struct map_info *map, void *to,
  52 +                                        unsigned long from, ssize_t len)
  53 +{
  54 +       physmap_lock(map);
  55 +       inline_map_copy_from(map, to, from, len);
  56 +       physmap_unlock(map);
  57 +}
  58 +
  59 +static void physmap_flash_copy_to_lock(struct map_info *map, unsigned long to,
  60 +                                      const void *from, ssize_t len)
  61 +{
  62 +       physmap_lock(map);
  63 +       inline_map_copy_to(map, to, from, len);
  64 +       physmap_unlock(map);
  65 +}
  66 +
  67  static int physmap_flash_remove(struct platform_device *dev)
  68  {
  69         struct physmap_flash_info *info;
  70 @@ -140,6 +200,13 @@ static int physmap_flash_probe(struct pl
  71
  72                 simple_map_init(&info->map[i]);
  73
  74 +               if (physmap_data->lock && physmap_data->unlock) {
  75 +                       info->map[i].read = physmap_flash_read_lock;
  76 +                       info->map[i].write = physmap_flash_write_lock;
  77 +                       info->map[i].copy_from = physmap_flash_copy_from_lock;
  78 +                       info->map[i].copy_to = physmap_flash_copy_to_lock;
  79 +               }
  80 +
  81                 probe_type = rom_probe_types;
  82                 if (physmap_data->probe_type == NULL) {
  83                         for (; info->mtd[i] == NULL && *probe_type != NULL; probe_type++)
  84 --- a/include/linux/mtd/physmap.h
  85 +++ b/include/linux/mtd/physmap.h
  86 @@ -26,6 +26,8 @@ struct physmap_flash_data {
  87         unsigned int            width;
  88         int                     (*init)(struct platform_device *);
  89         void                    (*exit)(struct platform_device *);
  90 +       void                    (*lock)(struct platform_device *);
  91 +       void                    (*unlock)(struct platform_device *);
  92         void                    (*set_vpp)(struct platform_device *, int);
  93         unsigned int            nr_parts;
  94         unsigned int            pfow_base;