ath9k: Add a debugfs file for antenna diversity
Signed-off-by: Sujith Manoharan <c_manoha@qca.qualcomm.com>
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 87454f6..d8764ae 100644
--- a/drivers/net/wireless/ath/ath9k/debug.c
+++ b/drivers/net/wireless/ath/ath9k/debug.c
@@ -321,6 +321,68 @@
.llseek = default_llseek,
};
+static ssize_t read_file_antenna_diversity(struct file *file,
+ char __user *user_buf,
+ size_t count, loff_t *ppos)
+{
+ struct ath_softc *sc = file->private_data;
+ struct ath_hw *ah = sc->sc_ah;
+ struct ath9k_hw_capabilities *pCap = &ah->caps;
+ struct ath_antenna_stats *as_main = &sc->debug.stats.ant_stats[ANT_MAIN];
+ struct ath_antenna_stats *as_alt = &sc->debug.stats.ant_stats[ANT_ALT];
+ unsigned int len = 0, size = 1024;
+ ssize_t retval = 0;
+ char *buf;
+
+ buf = kzalloc(size, GFP_KERNEL);
+ if (buf == NULL)
+ return -ENOMEM;
+
+ if (!(pCap->hw_caps & ATH9K_HW_CAP_ANT_DIV_COMB)) {
+ len += snprintf(buf + len, size - len, "%s\n",
+ "Antenna Diversity Combining is disabled");
+ goto exit;
+ }
+
+ len += snprintf(buf + len, size - len, "%30s%15s\n",
+ "MAIN", "ALT");
+ len += snprintf(buf + len, size - len, "%-15s%15d%15d\n",
+ "RECV CNT",
+ as_main->recv_cnt,
+ as_alt->recv_cnt);
+ len += snprintf(buf + len, size - len, "%-15s%15d%15d\n",
+ "LNA1",
+ as_main->lna_config_cnt[ATH_ANT_DIV_COMB_LNA1],
+ as_alt->lna_config_cnt[ATH_ANT_DIV_COMB_LNA1]);
+ len += snprintf(buf + len, size - len, "%-15s%15d%15d\n",
+ "LNA2",
+ as_main->lna_config_cnt[ATH_ANT_DIV_COMB_LNA2],
+ as_alt->lna_config_cnt[ATH_ANT_DIV_COMB_LNA2]);
+ len += snprintf(buf + len, size - len, "%-15s%15d%15d\n",
+ "LNA1 + LNA2",
+ as_main->lna_config_cnt[ATH_ANT_DIV_COMB_LNA1_PLUS_LNA2],
+ as_alt->lna_config_cnt[ATH_ANT_DIV_COMB_LNA1_PLUS_LNA2]);
+ len += snprintf(buf + len, size - len, "%-15s%15d%15d\n",
+ "LNA1 - LNA2",
+ as_main->lna_config_cnt[ATH_ANT_DIV_COMB_LNA1_MINUS_LNA2],
+ as_alt->lna_config_cnt[ATH_ANT_DIV_COMB_LNA1_MINUS_LNA2]);
+exit:
+ if (len > size)
+ len = size;
+
+ retval = simple_read_from_buffer(user_buf, count, ppos, buf, len);
+ kfree(buf);
+
+ return retval;
+}
+
+static const struct file_operations fops_antenna_diversity = {
+ .read = read_file_antenna_diversity,
+ .open = simple_open,
+ .owner = THIS_MODULE,
+ .llseek = default_llseek,
+};
+
static ssize_t read_file_dma(struct file *file, char __user *user_buf,
size_t count, loff_t *ppos)
{
@@ -1816,6 +1878,8 @@
sc->debug.debugfs_phy, &sc->sc_ah->gpio_val);
debugfs_create_file("diversity", S_IRUSR | S_IWUSR,
sc->debug.debugfs_phy, sc, &fops_ant_diversity);
+ debugfs_create_file("antenna_diversity", S_IRUSR,
+ sc->debug.debugfs_phy, sc, &fops_antenna_diversity);
#ifdef CONFIG_ATH9K_BTCOEX_SUPPORT
debugfs_create_file("btcoex", S_IRUSR, sc->debug.debugfs_phy, sc,
&fops_btcoex);