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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>
This commit is contained in:
Sujith Manoharan 2013-07-29 16:04:49 +05:30 committed by John W. Linville
parent c1de4a9557
commit 4eba10cc80
1 changed files with 64 additions and 0 deletions
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64
drivers/net/wireless/ath/ath9k/debug.c
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@ -321,6 +321,68 @@ static const struct file_operations fops_ant_diversity = {
.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 @@ int ath9k_init_debug(struct ath_hw *ah)
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);