ath9k: add debugfs files for reading/writing the rx and tx chainmask
Signed-off-by: Felix Fietkau <nbd@openwrt.org>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
diff --git a/drivers/net/wireless/ath/ath9k/debug.c b/drivers/net/wireless/ath/ath9k/debug.c
index 59252ce..7a2fe09 100644
--- a/drivers/net/wireless/ath/ath9k/debug.c
+++ b/drivers/net/wireless/ath/ath9k/debug.c
@@ -77,6 +77,90 @@
#define DMA_BUF_LEN 1024
+static ssize_t read_file_tx_chainmask(struct file *file, 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];
+ unsigned int len;
+
+ len = snprintf(buf, sizeof(buf), "0x%08x\n", common->tx_chainmask);
+ return simple_read_from_buffer(user_buf, count, ppos, buf, len);
+}
+
+static ssize_t write_file_tx_chainmask(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);
+ unsigned long mask;
+ char buf[32];
+ ssize_t len;
+
+ len = min(count, sizeof(buf) - 1);
+ if (copy_from_user(buf, user_buf, len))
+ return -EINVAL;
+
+ buf[len] = '\0';
+ if (strict_strtoul(buf, 0, &mask))
+ return -EINVAL;
+
+ common->tx_chainmask = mask;
+ sc->sc_ah->caps.tx_chainmask = mask;
+ return count;
+}
+
+static const struct file_operations fops_tx_chainmask = {
+ .read = read_file_tx_chainmask,
+ .write = write_file_tx_chainmask,
+ .open = ath9k_debugfs_open,
+ .owner = THIS_MODULE
+};
+
+
+static ssize_t read_file_rx_chainmask(struct file *file, 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];
+ unsigned int len;
+
+ len = snprintf(buf, sizeof(buf), "0x%08x\n", common->rx_chainmask);
+ return simple_read_from_buffer(user_buf, count, ppos, buf, len);
+}
+
+static ssize_t write_file_rx_chainmask(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);
+ unsigned long mask;
+ char buf[32];
+ ssize_t len;
+
+ len = min(count, sizeof(buf) - 1);
+ if (copy_from_user(buf, user_buf, len))
+ return -EINVAL;
+
+ buf[len] = '\0';
+ if (strict_strtoul(buf, 0, &mask))
+ return -EINVAL;
+
+ common->rx_chainmask = mask;
+ sc->sc_ah->caps.rx_chainmask = mask;
+ return count;
+}
+
+static const struct file_operations fops_rx_chainmask = {
+ .read = read_file_rx_chainmask,
+ .write = write_file_rx_chainmask,
+ .open = ath9k_debugfs_open,
+ .owner = THIS_MODULE
+};
+
+
static ssize_t read_file_dma(struct file *file, char __user *user_buf,
size_t count, loff_t *ppos)
{
@@ -753,6 +837,14 @@
sc, &fops_recv))
goto err;
+ if (!debugfs_create_file("rx_chainmask", S_IRUSR | S_IWUSR,
+ sc->debug.debugfs_phy, sc, &fops_rx_chainmask))
+ goto err;
+
+ if (!debugfs_create_file("tx_chainmask", S_IRUSR | S_IWUSR,
+ sc->debug.debugfs_phy, sc, &fops_tx_chainmask))
+ goto err;
+
return 0;
err:
ath9k_exit_debug(ah);