3394af677c
The ath patch number is already large and adding other patch for ath11k will add more confusion with the patch numbering. Since the support of ath11k based device is imminent, prepare the mac80211 ath patch dir and split it in the dedicated ath5k, ath9k, ath10k and ath11k (empty for now). Signed-off-by: Ansuel Smith <ansuelsmth@gmail.com>
143 lines
3.9 KiB
Diff
143 lines
3.9 KiB
Diff
This adds a bwmode debugfs file which can be used to set alternate
|
|
channel operating bandwidths. Only tested with AR5413 and only at
|
|
5 and 20 mhz channels.
|
|
|
|
Signed-off-by: Pat Erley <pat-lkml at erley.org>
|
|
---
|
|
Other devices will need to be added to the switch in write_file_bwmode
|
|
|
|
drivers/net/wireless/ath/ath5k/debug.c | 86 ++++++++++++++++++++++++++++++++
|
|
1 files changed, 86 insertions(+), 0 deletions(-)
|
|
|
|
--- a/drivers/net/wireless/ath/ath5k/debug.c
|
|
+++ b/drivers/net/wireless/ath/ath5k/debug.c
|
|
@@ -803,6 +803,97 @@ static const struct file_operations fops
|
|
.llseek = default_llseek,
|
|
};
|
|
|
|
+/* debugfs: bwmode */
|
|
+
|
|
+static ssize_t read_file_bwmode(struct file *file, char __user *user_buf,
|
|
+ size_t count, loff_t *ppos)
|
|
+{
|
|
+ struct ath5k_hw *ah = file->private_data;
|
|
+ char buf[15];
|
|
+ unsigned int len = 0;
|
|
+
|
|
+ int cur_ah_bwmode = ah->ah_bwmode_debug;
|
|
+
|
|
+#define print_selected(MODE, LABEL) \
|
|
+ if (cur_ah_bwmode == MODE) \
|
|
+ len += snprintf(buf+len, sizeof(buf)-len, "[%s]", LABEL); \
|
|
+ else \
|
|
+ len += snprintf(buf+len, sizeof(buf)-len, "%s", LABEL); \
|
|
+ len += snprintf(buf+len, sizeof(buf)-len, " ");
|
|
+
|
|
+ print_selected(AR5K_BWMODE_5MHZ, "5");
|
|
+ print_selected(AR5K_BWMODE_10MHZ, "10");
|
|
+ print_selected(AR5K_BWMODE_DEFAULT, "20");
|
|
+ print_selected(AR5K_BWMODE_40MHZ, "40");
|
|
+#undef print_selected
|
|
+
|
|
+ len += snprintf(buf+len, sizeof(buf)-len, "\n");
|
|
+
|
|
+ return simple_read_from_buffer(user_buf, count, ppos, buf, len);
|
|
+}
|
|
+
|
|
+static ssize_t write_file_bwmode(struct file *file,
|
|
+ const char __user *userbuf,
|
|
+ size_t count, loff_t *ppos)
|
|
+{
|
|
+ struct ath5k_hw *ah = file->private_data;
|
|
+ char buf[3];
|
|
+ int bw = 20;
|
|
+ int tobwmode = AR5K_BWMODE_DEFAULT;
|
|
+
|
|
+ if (copy_from_user(buf, userbuf, min(count, sizeof(buf))))
|
|
+ return -EFAULT;
|
|
+
|
|
+ /* TODO: Add check for active interface */
|
|
+
|
|
+ if(strncmp(buf, "5", 1) == 0 ) {
|
|
+ tobwmode = AR5K_BWMODE_5MHZ;
|
|
+ bw = 5;
|
|
+ } else if ( strncmp(buf, "10", 2) == 0 ) {
|
|
+ tobwmode = AR5K_BWMODE_10MHZ;
|
|
+ bw = 10;
|
|
+ } else if ( strncmp(buf, "20", 2) == 0 ) {
|
|
+ tobwmode = AR5K_BWMODE_DEFAULT;
|
|
+ bw = 20;
|
|
+ } else if ( strncmp(buf, "40", 2) == 0 ) {
|
|
+ tobwmode = AR5K_BWMODE_40MHZ;
|
|
+ bw = 40;
|
|
+ } else
|
|
+ return -EINVAL;
|
|
+
|
|
+ ATH5K_INFO(ah, "Changing to %imhz channel width[%i]\n",
|
|
+ bw, tobwmode);
|
|
+
|
|
+ switch (ah->ah_radio) {
|
|
+ /* TODO: only define radios that actually support 5/10mhz channels */
|
|
+ case AR5K_RF5413:
|
|
+ case AR5K_RF5110:
|
|
+ case AR5K_RF5111:
|
|
+ case AR5K_RF5112:
|
|
+ case AR5K_RF2413:
|
|
+ case AR5K_RF2316:
|
|
+ case AR5K_RF2317:
|
|
+ case AR5K_RF2425:
|
|
+ if(ah->ah_bwmode_debug != tobwmode) {
|
|
+ mutex_lock(&ah->lock);
|
|
+ ah->ah_bwmode = tobwmode;
|
|
+ ah->ah_bwmode_debug = tobwmode;
|
|
+ mutex_unlock(&ah->lock);
|
|
+ }
|
|
+ break;
|
|
+ default:
|
|
+ return -EOPNOTSUPP;
|
|
+ }
|
|
+ return count;
|
|
+}
|
|
+
|
|
+static const struct file_operations fops_bwmode = {
|
|
+ .read = read_file_bwmode,
|
|
+ .write = write_file_bwmode,
|
|
+ .open = simple_open,
|
|
+ .owner = THIS_MODULE,
|
|
+ .llseek = default_llseek,
|
|
+};
|
|
|
|
/* debugfs: queues etc */
|
|
|
|
@@ -997,6 +1088,8 @@ ath5k_debug_init_device(struct ath5k_hw
|
|
debugfs_create_file("queue", 0600, phydir, ah, &fops_queue);
|
|
debugfs_create_bool("32khz_clock", 0600, phydir,
|
|
&ah->ah_use_32khz_clock);
|
|
+ debugfs_create_file("bwmode", S_IWUSR | S_IRUSR, phydir, ah,
|
|
+ &fops_bwmode);
|
|
}
|
|
|
|
/* functions used in other places */
|
|
--- a/drivers/net/wireless/ath/ath5k/ath5k.h
|
|
+++ b/drivers/net/wireless/ath/ath5k/ath5k.h
|
|
@@ -1372,6 +1372,7 @@ struct ath5k_hw {
|
|
u8 ah_coverage_class;
|
|
bool ah_ack_bitrate_high;
|
|
u8 ah_bwmode;
|
|
+ u8 ah_bwmode_debug;
|
|
bool ah_short_slot;
|
|
|
|
/* Antenna Control */
|
|
--- a/drivers/net/wireless/ath/ath5k/base.c
|
|
+++ b/drivers/net/wireless/ath/ath5k/base.c
|
|
@@ -466,6 +466,9 @@ ath5k_chan_set(struct ath5k_hw *ah, stru
|
|
return -EINVAL;
|
|
}
|
|
|
|
+ if (ah->ah_bwmode_debug != AR5K_BWMODE_DEFAULT)
|
|
+ ah->ah_bwmode = ah->ah_bwmode_debug;
|
|
+
|
|
/*
|
|
* To switch channels clear any pending DMA operations;
|
|
* wait long enough for the RX fifo to drain, reset the
|