Commit 4eba10cc authored by Sujith Manoharan's avatar Sujith Manoharan Committed by John W. Linville
Browse files

ath9k: Add a debugfs file for antenna diversity 



Signed-off-by: default avatarSujith Manoharan <c_manoha@qca.qualcomm.com>
Signed-off-by: default avatarJohn W. Linville <linville@tuxdriver.com>
parent c1de4a95

drivers/net/wireless/ath/ath9k/debug.c

+64 −0
Original line number Diff line number Diff line
@@ -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);