Donate to e Foundation | Murena handsets with /e/OS | Own a part of Murena! Learn more

Commit 302a3c3a authored by Sujith Manoharan's avatar Sujith Manoharan Committed by John W. Linville
Browse files

ath9k: Add a debugfs file to adjust antenna diversity 



Location: /<debugfs>/ieee80211/phy#/ath9k/diversity

Signed-off-by: default avatarSujith Manoharan <c_manoha@qca.qualcomm.com>
Signed-off-by: default avatarJohn W. Linville <linville@tuxdriver.com>
parent 69c6ac60

drivers/net/wireless/ath/ath9k/ar9003_phy.c

+1 −1
Original line number Diff line number Diff line
@@ -1360,7 +1360,7 @@ static void ar9003_hw_antctrl_shared_chain_lnadiv(struct ath_hw *ah, 
	if (enable) {

		REG_SET_BIT(ah, AR_PHY_MC_GAIN_CTRL,

			    (1 << AR_PHY_ANT_SW_RX_PROT_S));

		if (IS_CHAN_2GHZ(ah->curchan))

		if (ah->curchan && IS_CHAN_2GHZ(ah->curchan))

			REG_SET_BIT(ah, AR_PHY_RESTART,

				    AR_PHY_RESTART_ENABLE_DIV_M2FLAG);

		REG_SET_BIT(ah, AR_BTCOEX_WL_LNADIV,

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

+53 −2
Original line number Diff line number Diff line
@@ -222,6 +222,57 @@ static const struct file_operations fops_disable_ani = { 
	.llseek = default_llseek,

};



static ssize_t read_file_ant_diversity(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 = sprintf(buf, "%d\n", common->antenna_diversity);

	return simple_read_from_buffer(user_buf, count, ppos, buf, len);

}



static ssize_t write_file_ant_diversity(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 antenna_diversity;

	char buf[32];

	ssize_t len;



	len = min(count, sizeof(buf) - 1);

	if (copy_from_user(buf, user_buf, len))

		return -EFAULT;



	if (!AR_SREV_9565(sc->sc_ah))

		goto exit;



	buf[len] = '\0';

	if (strict_strtoul(buf, 0, &antenna_diversity))

		return -EINVAL;



	common->antenna_diversity = !!antenna_diversity;

	ath9k_ps_wakeup(sc);

	ath_ant_comb_update(sc);

	ath_dbg(common, CONFIG, "Antenna diversity: %d\n",

		common->antenna_diversity);

	ath9k_ps_restore(sc);

exit:

	return count;

}



static const struct file_operations fops_ant_diversity = {

	.read = read_file_ant_diversity,

	.write = write_file_ant_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)

{
@@ -1599,12 +1650,12 @@ int ath9k_init_debug(struct ath_hw *ah) 
	debugfs_create_file("samples", S_IRUSR, sc->debug.debugfs_phy, sc,

			    &fops_samps);

#endif



	debugfs_create_u32("gpio_mask", S_IRUSR | S_IWUSR,

			   sc->debug.debugfs_phy, &sc->sc_ah->gpio_mask);



	debugfs_create_u32("gpio_val", S_IRUSR | S_IWUSR,

			   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);



	return 0;

}