package/kernel/mac80211/patches/ath/512-ath9k_channelbw_debugfs.patch

   1 --- a/drivers/net/wireless/ath/ath9k/debug.c
   2 +++ b/drivers/net/wireless/ath/ath9k/debug.c
   3 @@ -1411,6 +1411,52 @@ static const struct file_operations fops
   4         .owner = THIS_MODULE
   5  };
   6
   7 +
   8 +static ssize_t read_file_chan_bw(struct file *file, char __user *user_buf,
   9 +                            size_t count, loff_t *ppos)
  10 +{
  11 +       struct ath_softc *sc = file->private_data;
  12 +       struct ath_common *common = ath9k_hw_common(sc->sc_ah);
  13 +       char buf[32];
  14 +       unsigned int len;
  15 +
  16 +       len = sprintf(buf, "0x%08x\n", common->chan_bw);
  17 +       return simple_read_from_buffer(user_buf, count, ppos, buf, len);
  18 +}
  19 +
  20 +static ssize_t write_file_chan_bw(struct file *file, const char __user *user_buf,
  21 +                            size_t count, loff_t *ppos)
  22 +{
  23 +       struct ath_softc *sc = file->private_data;
  24 +       struct ath_common *common = ath9k_hw_common(sc->sc_ah);
  25 +       unsigned long chan_bw;
  26 +       char buf[32];
  27 +       ssize_t len;
  28 +
  29 +       len = min(count, sizeof(buf) - 1);
  30 +       if (copy_from_user(buf, user_buf, len))
  31 +               return -EFAULT;
  32 +
  33 +       buf[len] = '\0';
  34 +       if (kstrtoul(buf, 0, &chan_bw))
  35 +               return -EINVAL;
  36 +
  37 +       common->chan_bw = chan_bw;
  38 +       if (!test_bit(ATH_OP_INVALID, &common->op_flags))
  39 +               ath9k_ops.config(sc->hw, IEEE80211_CONF_CHANGE_CHANNEL);
  40 +
  41 +       return count;
  42 +}
  43 +
  44 +static const struct file_operations fops_chanbw = {
  45 +       .read = read_file_chan_bw,
  46 +       .write = write_file_chan_bw,
  47 +       .open = simple_open,
  48 +       .owner = THIS_MODULE,
  49 +       .llseek = default_llseek,
  50 +};
  51 +
  52 +
  53  int ath9k_init_debug(struct ath_hw *ah)
  54  {
  55         struct ath_common *common = ath9k_hw_common(ah);
  56 @@ -1432,6 +1478,8 @@ int ath9k_init_debug(struct ath_hw *ah)
  57
  58         debugfs_create_file("eeprom", S_IRUSR, sc->debug.debugfs_phy, sc,
  59                             &fops_eeprom);
  60 +       debugfs_create_file("chanbw", S_IRUSR | S_IWUSR, sc->debug.debugfs_phy,
  61 +                           sc, &fops_chanbw);
  62         debugfs_create_devm_seqfile(sc->dev, "dma", sc->debug.debugfs_phy,
  63                                     read_file_dma);
  64         debugfs_create_devm_seqfile(sc->dev, "interrupt", sc->debug.debugfs_phy,
  65 --- a/drivers/net/wireless/ath/ath.h
  66 +++ b/drivers/net/wireless/ath/ath.h
  67 @@ -149,6 +149,7 @@ struct ath_common {
  68         int debug_mask;
  69         enum ath_device_state state;
  70         unsigned long op_flags;
  71 +       u32 chan_bw;
  72
  73         struct ath_ani ani;
  74
  75 --- a/drivers/net/wireless/ath/ath9k/common.c
  76 +++ b/drivers/net/wireless/ath/ath9k/common.c
  77 @@ -297,11 +297,13 @@ EXPORT_SYMBOL(ath9k_cmn_get_hw_crypto_ke
  78  /*
  79   * Update internal channel flags.
  80   */
  81 -static void ath9k_cmn_update_ichannel(struct ath9k_channel *ichan,
  82 +static void ath9k_cmn_update_ichannel(struct ath_common *common,
  83 +                                     struct ath9k_channel *ichan,
  84                                       struct cfg80211_chan_def *chandef)
  85  {
  86         struct ieee80211_channel *chan = chandef->chan;
  87         u16 flags = 0;
  88 +       int width;
  89
  90         ichan->channel = chan->center_freq;
  91         ichan->chan = chan;
  92 @@ -309,7 +311,19 @@ static void ath9k_cmn_update_ichannel(st
  93         if (chan->band == NL80211_BAND_5GHZ)
  94                 flags |= CHANNEL_5GHZ;
  95
  96 -       switch (chandef->width) {
  97 +       switch (common->chan_bw) {
  98 +       case 5:
  99 +               width = NL80211_CHAN_WIDTH_5;
 100 +               break;
 101 +       case 10:
 102 +               width = NL80211_CHAN_WIDTH_10;
 103 +               break;
 104 +       default:
 105 +               width = chandef->width;
 106 +               break;
 107 +       }
 108 +
 109 +       switch (width) {
 110         case NL80211_CHAN_WIDTH_5:
 111                 flags |= CHANNEL_QUARTER;
 112                 break;
 113 @@ -342,10 +356,11 @@ struct ath9k_channel *ath9k_cmn_get_chan
 114                                             struct cfg80211_chan_def *chandef)
 115  {
 116         struct ieee80211_channel *curchan = chandef->chan;
 117 +       struct ath_common *common = ath9k_hw_common(ah);
 118         struct ath9k_channel *channel;
 119
 120         channel = &ah->channels[curchan->hw_value];
 121 -       ath9k_cmn_update_ichannel(channel, chandef);
 122 +       ath9k_cmn_update_ichannel(common, channel, chandef);
 123
 124         return channel;
 125  }