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authorJohn Crispin <john@phrozen.org>2018-08-02 08:44:29 +0200
committerJohn Crispin <john@phrozen.org>2018-09-26 16:35:33 +0200
commitd9eefa7a7031543571d434693c7f984dfbdc990d (patch)
tree73ac027ccf6cdb6fd209a83e7e25c3d0472d46b4 /package/kernel/mac80211/patches/ath/440-ath5k_channel_bw_debugfs.patch
parente9d92bf1e1af71ff19e4cdc753de3f65963c58a5 (diff)
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mac80211: rebase ontop of v4.18.5
Signed-off-by: John Crispin <john@phrozen.org>
Diffstat (limited to 'package/kernel/mac80211/patches/ath/440-ath5k_channel_bw_debugfs.patch')
-rw-r--r--package/kernel/mac80211/patches/ath/440-ath5k_channel_bw_debugfs.patch148
1 files changed, 148 insertions, 0 deletions
diff --git a/package/kernel/mac80211/patches/ath/440-ath5k_channel_bw_debugfs.patch b/package/kernel/mac80211/patches/ath/440-ath5k_channel_bw_debugfs.patch
new file mode 100644
index 0000000000..20d67d2762
--- /dev/null
+++ b/package/kernel/mac80211/patches/ath/440-ath5k_channel_bw_debugfs.patch
@@ -0,0 +1,148 @@
+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(-)
+
+Index: backports-v4.18-rc7/drivers/net/wireless/ath/ath5k/debug.c
+===================================================================
+--- backports-v4.18-rc7.orig/drivers/net/wireless/ath/ath5k/debug.c
++++ backports-v4.18-rc7/drivers/net/wireless/ath/ath5k/debug.c
+@@ -822,6 +822,97 @@ 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 */
+
+@@ -1016,6 +1107,8 @@ 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 */
+Index: backports-v4.18-rc7/drivers/net/wireless/ath/ath5k/ath5k.h
+===================================================================
+--- backports-v4.18-rc7.orig/drivers/net/wireless/ath/ath5k/ath5k.h
++++ backports-v4.18-rc7/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 */
+Index: backports-v4.18-rc7/drivers/net/wireless/ath/ath5k/base.c
+===================================================================
+--- backports-v4.18-rc7.orig/drivers/net/wireless/ath/ath5k/base.c
++++ backports-v4.18-rc7/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