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

   1 --- a/drivers/net/wireless/ath/ath9k/ath9k.h
   2 +++ b/drivers/net/wireless/ath/ath9k/ath9k.h
   3 @@ -701,6 +701,7 @@ struct ath_softc {
   4         struct ieee80211_hw *hw;
   5         struct device *dev;
   6
   7 +       u32 chan_bw;
   8         struct survey_info *cur_survey;
   9         struct survey_info survey[ATH9K_NUM_CHANNELS];
  10
  11 @@ -905,6 +906,7 @@ struct fft_sample_ht20 {
  12         u8 data[SPECTRAL_HT20_NUM_BINS];
  13  } __packed;
  14
  15 +int ath9k_config(struct ieee80211_hw *hw, u32 changed);
  16  void ath9k_tasklet(unsigned long data);
  17  int ath_cabq_update(struct ath_softc *);
  18
  19 --- a/drivers/net/wireless/ath/ath9k/debug.c
  20 +++ b/drivers/net/wireless/ath/ath9k/debug.c
  21 @@ -1918,6 +1918,50 @@ static const struct file_operations fops
  22         .owner = THIS_MODULE
  23  };
  24
  25 +
  26 +static ssize_t read_file_chan_bw(struct file *file, char __user *user_buf,
  27 +                            size_t count, loff_t *ppos)
  28 +{
  29 +       struct ath_softc *sc = file->private_data;
  30 +       char buf[32];
  31 +       unsigned int len;
  32 +
  33 +       len = sprintf(buf, "0x%08x\n", sc->chan_bw);
  34 +       return simple_read_from_buffer(user_buf, count, ppos, buf, len);
  35 +}
  36 +
  37 +static ssize_t write_file_chan_bw(struct file *file, const char __user *user_buf,
  38 +                            size_t count, loff_t *ppos)
  39 +{
  40 +       struct ath_softc *sc = file->private_data;
  41 +       unsigned long chan_bw;
  42 +       char buf[32];
  43 +       ssize_t len;
  44 +
  45 +       len = min(count, sizeof(buf) - 1);
  46 +       if (copy_from_user(buf, user_buf, len))
  47 +               return -EFAULT;
  48 +
  49 +       buf[len] = '\0';
  50 +       if (kstrtoul(buf, 0, &chan_bw))
  51 +               return -EINVAL;
  52 +
  53 +       sc->chan_bw = chan_bw;
  54 +       if (!test_bit(SC_OP_INVALID, &sc->sc_flags))
  55 +               ath9k_config(sc->hw, IEEE80211_CONF_CHANGE_CHANNEL);
  56 +
  57 +       return count;
  58 +}
  59 +
  60 +static const struct file_operations fops_chanbw = {
  61 +       .read = read_file_chan_bw,
  62 +       .write = write_file_chan_bw,
  63 +       .open = simple_open,
  64 +       .owner = THIS_MODULE,
  65 +       .llseek = default_llseek,
  66 +};
  67 +
  68 +
  69  int ath9k_init_debug(struct ath_hw *ah)
  70  {
  71         struct ath_common *common = ath9k_hw_common(ah);
  72 @@ -1937,6 +1981,8 @@ int ath9k_init_debug(struct ath_hw *ah)
  73
  74         debugfs_create_file("eeprom", S_IRUSR, sc->debug.debugfs_phy, sc,
  75                             &fops_eeprom);
  76 +       debugfs_create_file("chanbw", S_IRUSR | S_IWUSR, sc->debug.debugfs_phy,
  77 +                           sc, &fops_chanbw);
  78         debugfs_create_file("dma", S_IRUSR, sc->debug.debugfs_phy, sc,
  79                             &fops_dma);
  80         debugfs_create_file("interrupt", S_IRUSR, sc->debug.debugfs_phy, sc,
  81 --- a/drivers/net/wireless/ath/ath9k/main.c
  82 +++ b/drivers/net/wireless/ath/ath9k/main.c
  83 @@ -1146,7 +1146,7 @@ int ath9k_spectral_scan_config(struct ie
  84         return 0;
  85  }
  86
  87 -static int ath9k_config(struct ieee80211_hw *hw, u32 changed)
  88 +int ath9k_config(struct ieee80211_hw *hw, u32 changed)
  89  {
  90         struct ath_softc *sc = hw->priv;
  91         struct ath_hw *ah = sc->sc_ah;
  92 @@ -1200,8 +1200,10 @@ static int ath9k_config(struct ieee80211
  93
  94         if ((changed & IEEE80211_CONF_CHANGE_CHANNEL) || reset_channel) {
  95                 struct ieee80211_channel *curchan = hw->conf.chandef.chan;
  96 +               struct ath9k_channel *hchan;
  97                 int pos = curchan->hw_value;
  98                 int old_pos = -1;
  99 +               u32 oldflags;
 100                 unsigned long flags;
 101
 102                 if (ah->curchan)
 103 @@ -1238,7 +1240,23 @@ static int ath9k_config(struct ieee80211
 104                         memset(&sc->survey[pos], 0, sizeof(struct survey_info));
 105                 }
 106
 107 -               if (ath_set_channel(sc, hw, &sc->sc_ah->channels[pos]) < 0) {
 108 +               hchan = &sc->sc_ah->channels[pos];
 109 +               oldflags = hchan->channelFlags;
 110 +               switch (sc->chan_bw) {
 111 +               case 5:
 112 +                       hchan->channelFlags &= ~CHANNEL_HALF;
 113 +                       hchan->channelFlags |= CHANNEL_QUARTER;
 114 +                       break;
 115 +               case 10:
 116 +                       hchan->channelFlags &= ~CHANNEL_QUARTER;
 117 +                       hchan->channelFlags |= CHANNEL_HALF;
 118 +                       break;
 119 +               default:
 120 +                       hchan->channelFlags &= ~(CHANNEL_HALF | CHANNEL_QUARTER);
 121 +                       break;
 122 +               }
 123 +
 124 +               if (ath_set_channel(sc, hw, hchan) < 0) {
 125                         ath_err(common, "Unable to set channel\n");
 126                         mutex_unlock(&sc->mutex);
 127                         ath9k_ps_restore(sc);