package/mac80211/patches/540-ath9k_eeprom_debugfs.patch

   1 --- a/drivers/net/wireless/ath/ath9k/debug.c
   2 +++ b/drivers/net/wireless/ath/ath9k/debug.c
   3 @@ -897,6 +897,53 @@ static const struct file_operations fops
   4         .owner = THIS_MODULE
   5  };
   6
   7 +static ssize_t read_file_eeprom(struct file *file, char __user *user_buf,
   8 +                            size_t count, loff_t *ppos)
   9 +{
  10 +       struct ath_softc *sc = file->private_data;
  11 +       struct ath_hw *ah = sc->sc_ah;
  12 +       struct ath_common *common = ath9k_hw_common(ah);
  13 +       int bytes = 0;
  14 +       int pos = *ppos;
  15 +       int size = 4096;
  16 +       u16 val;
  17 +       int i;
  18 +
  19 +       if (AR_SREV_9300_20_OR_LATER(ah))
  20 +               size = 16384;
  21 +
  22 +       if (*ppos < 0)
  23 +               return -EINVAL;
  24 +
  25 +       if (count > size - *ppos)
  26 +               count = size - *ppos;
  27 +
  28 +       for (i = *ppos / 2; count > 0; count -= bytes, *ppos += bytes, i++) {
  29 +               void *from = &val;
  30 +
  31 +               if (!common->bus_ops->eeprom_read(common, i, &val))
  32 +                       val = 0xffff;
  33 +
  34 +               if (*ppos % 2) {
  35 +                       from++;
  36 +                       bytes = 1;
  37 +               } else if (count == 1) {
  38 +                       bytes = 1;
  39 +               } else {
  40 +                       bytes = 2;
  41 +               }
  42 +               copy_to_user(user_buf, from, bytes);
  43 +               user_buf += bytes;
  44 +       }
  45 +       return *ppos - pos;
  46 +}
  47 +
  48 +static const struct file_operations fops_eeprom = {
  49 +       .read = read_file_eeprom,
  50 +       .open = ath9k_debugfs_open,
  51 +       .owner = THIS_MODULE
  52 +};
  53 +
  54  int ath9k_init_debug(struct ath_hw *ah)
  55  {
  56         struct ath_common *common = ath9k_hw_common(ah);
  57 @@ -960,6 +1007,10 @@ int ath9k_init_debug(struct ath_hw *ah)
  58                         sc->debug.debugfs_phy, &ah->config.cwm_ignore_extcca))
  59                 goto err;
  60
  61 +       if (!debugfs_create_file("eeprom", S_IRUSR,
  62 +                       sc->debug.debugfs_phy, sc, &fops_eeprom))
  63 +               goto err;
  64 +
  65         sc->debug.regidx = 0;
  66         return 0;
  67  err: