1 files changed, 118 insertions, 0 deletions

diff --git a/drivers/net/wireless/ath/ath9k/debug.c b/drivers/net/wireless/ath/ath9k/debug.c
index 1be2c787aac9..83a2c59f680b 100644
--- a/drivers/net/wireless/ath/ath9k/debug.c
+++ b/drivers/net/wireless/ath/ath9k/debug.c
@@ -1050,6 +1050,9 @@ static ssize_t write_file_spec_scan_ctl(struct file *file,
 	char buf[32];
 	ssize_t len;
 
+	if (config_enabled(CONFIG_ATH9K_TX99))
+		return -EOPNOTSUPP;
+
 	len = min(count, sizeof(buf) - 1);
 	if (copy_from_user(buf, user_buf, len))
 		return -EFAULT;
@@ -1775,6 +1778,111 @@ void ath9k_deinit_debug(struct ath_softc *sc)
 	}
 }
 
+static ssize_t read_file_tx99(struct file *file, char __user *user_buf,
+			      size_t count, loff_t *ppos)
+{
+	struct ath_softc *sc = file->private_data;
+	char buf[3];
+	unsigned int len;
+
+	len = sprintf(buf, "%d\n", sc->tx99_state);
+	return simple_read_from_buffer(user_buf, count, ppos, buf, len);
+}
+
+static ssize_t write_file_tx99(struct file *file, const char __user *user_buf,
+			       size_t count, loff_t *ppos)
+{
+	struct ath_softc *sc = file->private_data;
+	struct ath_common *common = ath9k_hw_common(sc->sc_ah);
+	char buf[32];
+	bool start;
+	ssize_t len;
+	int r;
+
+	if (sc->nvifs > 1)
+		return -EOPNOTSUPP;
+
+	len = min(count, sizeof(buf) - 1);
+	if (copy_from_user(buf, user_buf, len))
+		return -EFAULT;
+
+	if (strtobool(buf, &start))
+		return -EINVAL;
+
+	if (start == sc->tx99_state) {
+		if (!start)
+			return count;
+		ath_dbg(common, XMIT, "Resetting TX99\n");
+		ath9k_tx99_deinit(sc);
+	}
+
+	if (!start) {
+		ath9k_tx99_deinit(sc);
+		return count;
+	}
+
+	r = ath9k_tx99_init(sc);
+	if (r)
+		return r;
+
+	return count;
+}
+
+static const struct file_operations fops_tx99 = {
+	.read = read_file_tx99,
+	.write = write_file_tx99,
+	.open = simple_open,
+	.owner = THIS_MODULE,
+	.llseek = default_llseek,
+};
+
+static ssize_t read_file_tx99_power(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, "%d (%d dBm)\n",
+		      sc->tx99_power,
+		      sc->tx99_power / 2);
+
+	return simple_read_from_buffer(user_buf, count, ppos, buf, len);
+}
+
+static ssize_t write_file_tx99_power(struct file *file,
+				     const char __user *user_buf,
+				     size_t count, loff_t *ppos)
+{
+	struct ath_softc *sc = file->private_data;
+	int r;
+	u8 tx_power;
+
+	r = kstrtou8_from_user(user_buf, count, 0, &tx_power);
+	if (r)
+		return r;
+
+	if (tx_power > MAX_RATE_POWER)
+		return -EINVAL;
+
+	sc->tx99_power = tx_power;
+
+	ath9k_ps_wakeup(sc);
+	ath9k_hw_tx99_set_txpower(sc->sc_ah, sc->tx99_power);
+	ath9k_ps_restore(sc);
+
+	return count;
+}
+
+static const struct file_operations fops_tx99_power = {
+	.read = read_file_tx99_power,
+	.write = write_file_tx99_power,
+	.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);
@@ -1866,5 +1974,15 @@ int ath9k_init_debug(struct ath_hw *ah)
 	debugfs_create_file("btcoex", S_IRUSR, sc->debug.debugfs_phy, sc,
 			    &fops_btcoex);
 #endif
+	if (config_enabled(CONFIG_ATH9K_TX99) &&
+	    AR_SREV_9300_20_OR_LATER(ah)) {
+		debugfs_create_file("tx99", S_IRUSR | S_IWUSR,
+				    sc->debug.debugfs_phy, sc,
+				    &fops_tx99);
+		debugfs_create_file("tx99_power", S_IRUSR | S_IWUSR,
+				    sc->debug.debugfs_phy, sc,
+				    &fops_tx99_power);
+	}
+
 	return 0;
 }