1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
|
--- a/drivers/net/wireless/ath/ath9k/ath9k.h
+++ b/drivers/net/wireless/ath/ath9k/ath9k.h
@@ -691,6 +691,7 @@ struct ath_softc {
struct ieee80211_hw *hw;
struct device *dev;
+ u32 chan_bw;
struct survey_info *cur_survey;
struct survey_info survey[ATH9K_NUM_CHANNELS];
@@ -895,6 +896,7 @@ struct fft_sample_ht20 {
u8 data[SPECTRAL_HT20_NUM_BINS];
} __packed;
+int ath9k_config(struct ieee80211_hw *hw, u32 changed);
void ath9k_tasklet(unsigned long data);
int ath_cabq_update(struct ath_softc *);
--- a/drivers/net/wireless/ath/ath9k/debug.c
+++ b/drivers/net/wireless/ath/ath9k/debug.c
@@ -2059,6 +2059,50 @@ static const struct file_operations fops
.owner = THIS_MODULE
};
+
+static ssize_t read_file_chan_bw(struct file *file, char __user *user_buf,
+ size_t count, loff_t *ppos)
+{
+ struct ath_softc *sc = file->private_data;
+ char buf[32];
+ unsigned int len;
+
+ len = sprintf(buf, "0x%08x\n", sc->chan_bw);
+ return simple_read_from_buffer(user_buf, count, ppos, buf, len);
+}
+
+static ssize_t write_file_chan_bw(struct file *file, const char __user *user_buf,
+ size_t count, loff_t *ppos)
+{
+ struct ath_softc *sc = file->private_data;
+ unsigned long chan_bw;
+ char buf[32];
+ ssize_t len;
+
+ len = min(count, sizeof(buf) - 1);
+ if (copy_from_user(buf, user_buf, len))
+ return -EFAULT;
+
+ buf[len] = '\0';
+ if (strict_strtoul(buf, 0, &chan_bw))
+ return -EINVAL;
+
+ sc->chan_bw = chan_bw;
+ if (!test_bit(SC_OP_INVALID, &sc->sc_flags))
+ ath9k_config(sc->hw, IEEE80211_CONF_CHANGE_CHANNEL);
+
+ return count;
+}
+
+static const struct file_operations fops_chanbw = {
+ .read = read_file_chan_bw,
+ .write = write_file_chan_bw,
+ .open = simple_open,
+ .owner = THIS_MODULE,
+ .llseek = default_llseek,
+};
+
+
int ath9k_init_debug(struct ath_hw *ah)
{
struct ath_common *common = ath9k_hw_common(ah);
@@ -2078,6 +2122,8 @@ int ath9k_init_debug(struct ath_hw *ah)
debugfs_create_file("eeprom", S_IRUSR, sc->debug.debugfs_phy, sc,
&fops_eeprom);
+ debugfs_create_file("chanbw", S_IRUSR | S_IWUSR, sc->debug.debugfs_phy,
+ sc, &fops_chanbw);
debugfs_create_file("dma", S_IRUSR, sc->debug.debugfs_phy, sc,
&fops_dma);
debugfs_create_file("interrupt", S_IRUSR, sc->debug.debugfs_phy, sc,
--- a/drivers/net/wireless/ath/ath9k/main.c
+++ b/drivers/net/wireless/ath/ath9k/main.c
@@ -1140,7 +1140,7 @@ int ath9k_spectral_scan_config(struct ie
return 0;
}
-static int ath9k_config(struct ieee80211_hw *hw, u32 changed)
+int ath9k_config(struct ieee80211_hw *hw, u32 changed)
{
struct ath_softc *sc = hw->priv;
struct ath_hw *ah = sc->sc_ah;
@@ -1196,9 +1196,11 @@ static int ath9k_config(struct ieee80211
struct ieee80211_channel *curchan = hw->conf.chandef.chan;
enum nl80211_channel_type channel_type =
cfg80211_get_chandef_type(&conf->chandef);
+ struct ath9k_channel *hchan;
int pos = curchan->hw_value;
int old_pos = -1;
unsigned long flags;
+ u32 oldflags;
if (ah->curchan)
old_pos = ah->curchan - &ah->channels[0];
@@ -1241,7 +1243,23 @@ static int ath9k_config(struct ieee80211
memset(&sc->survey[pos], 0, sizeof(struct survey_info));
}
- if (ath_set_channel(sc, hw, &sc->sc_ah->channels[pos]) < 0) {
+ hchan = &sc->sc_ah->channels[pos];
+ oldflags = hchan->channelFlags;
+ switch (sc->chan_bw) {
+ case 5:
+ hchan->channelFlags &= ~CHANNEL_HALF;
+ hchan->channelFlags |= CHANNEL_QUARTER;
+ break;
+ case 10:
+ hchan->channelFlags &= ~CHANNEL_QUARTER;
+ hchan->channelFlags |= CHANNEL_HALF;
+ break;
+ default:
+ hchan->channelFlags &= ~(CHANNEL_HALF | CHANNEL_QUARTER);
+ break;
+ }
+
+ if (ath_set_channel(sc, hw, hchan) < 0) {
ath_err(common, "Unable to set channel\n");
mutex_unlock(&sc->mutex);
ath9k_ps_restore(sc);
|
