[OpenWrt-Devel] [PATCH 1/2] mac80211: 5/10 MHz channel width support for ath9k_htc

[Tomislav Požega]

Add 5/10 MHz channel width support for ath9k_htc driver. Connection tested
between several devices and working.

Signed-off-by: Tomislav Požega <pozega.tomislav at gmail.com>
---
 .../patches/512-ath9k_channelbw_debugfs.patch      |   62 ++++++++++++++++++++
 1 files changed, 62 insertions(+), 0 deletions(-)

diff --git a/package/kernel/mac80211/patches/512-ath9k_channelbw_debugfs.patch b/package/kernel/mac80211/patches/512-ath9k_channelbw_debugfs.patch
index 2ebb73d..9349c07 100644
--- a/package/kernel/mac80211/patches/512-ath9k_channelbw_debugfs.patch
+++ b/package/kernel/mac80211/patches/512-ath9k_channelbw_debugfs.patch
@@ -123,3 +123,65 @@
  
  	return channel;
  }
+--- a/drivers/net/wireless/ath/ath9k/htc_drv_debug.c
++++ b/drivers/net/wireless/ath/ath9k/htc_drv_debug.c
+@@ -398,6 +398,50 @@ static const struct file_operations fops
+ 	.llseek = default_llseek,
+ };
+ 
++static ssize_t read_file_chan_bw(struct file *file, char __user *user_buf,
++			     size_t count, loff_t *ppos)
++{
++	struct ath9k_htc_priv *priv = file->private_data;
++	struct ath_common *common = ath9k_hw_common(priv->ah);
++	char buf[32];
++	unsigned int len;
++
++	len = sprintf(buf, "0x%08x\n", common->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 ath9k_htc_priv *priv = file->private_data;
++	struct ath_common *common = ath9k_hw_common(priv->ah);
++	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 (kstrtoul(buf, 0, &chan_bw))
++		return -EINVAL;
++
++	common->chan_bw = chan_bw;
++	if (!test_bit(ATH_OP_INVALID, &common->op_flags))
++		ath9k_htc_ops.config(priv->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,
++};
++
+ /* Ethtool support for get-stats */
+ #define AMKSTR(nm) #nm "_BE", #nm "_BK", #nm "_VI", #nm "_VO"
+ static const char ath9k_htc_gstrings_stats[][ETH_GSTRING_LEN] = {
+@@ -520,5 +564,8 @@ int ath9k_htc_init_debug(struct ath_hw *
+ 	ath9k_cmn_debug_base_eeprom(priv->debug.debugfs_phy, priv->ah);
+ 	ath9k_cmn_debug_modal_eeprom(priv->debug.debugfs_phy, priv->ah);
+ 
++	debugfs_create_file("chanbw", S_IRUSR | S_IWUSR, priv->debug.debugfs_phy,
++			    priv, &fops_chanbw);
++
+ 	return 0;
+ }
-- 
1.7.0.4


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