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ath9k: Add a debugfs file to adjust antenna diversity

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Location: /<debugfs>/ieee80211/phy#/ath9k/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 2012-09-26 07:55:18 +05:30 committed by John W. Linville
parent 69c6ac60f5
commit 302a3c3a38
2 changed files with 54 additions and 3 deletions
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2
drivers/net/wireless/ath/ath9k/ar9003_phy.c
View File

@ -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,

55
drivers/net/wireless/ath/ath9k/debug.c
View File

@ -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;
}