diff options
| author | Felix Fietkau <nbd@openwrt.org> | 2011-03-19 13:55:38 +0100 |
|---|---|---|
| committer | John W. Linville <linville@tuxdriver.com> | 2011-03-30 14:15:15 -0400 |
| commit | 691680b8335fa8995b190676f53e3bcef6477b4a (patch) | |
| tree | da065593ff7d2fa4dd15b2a9718357cc6872f8e0 /drivers/net/wireless/ath/ath9k/hw.c | |
| parent | c70cab1a45d56395db03957f6504c6b613bece5b (diff) | |
| download | kernel_samsung_smdk4412-691680b8335fa8995b190676f53e3bcef6477b4a.zip kernel_samsung_smdk4412-691680b8335fa8995b190676f53e3bcef6477b4a.tar.gz kernel_samsung_smdk4412-691680b8335fa8995b190676f53e3bcef6477b4a.tar.bz2 | |
ath9k: add an interface for overriding the value of specific GPIO pins
Some devices control antenna settings or other things through GPIO pins
of the wireless interface. Add a debugfs interface for changing those
and keeping them set across card resets.
Signed-off-by: Felix Fietkau <nbd@openwrt.org>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Diffstat (limited to 'drivers/net/wireless/ath/ath9k/hw.c')
| -rw-r--r-- | drivers/net/wireless/ath/ath9k/hw.c | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/drivers/net/wireless/ath/ath9k/hw.c b/drivers/net/wireless/ath/ath9k/hw.c index 338b075..b170c45 100644 --- a/drivers/net/wireless/ath/ath9k/hw.c +++ b/drivers/net/wireless/ath/ath9k/hw.c @@ -1212,6 +1212,20 @@ static bool ath9k_hw_channel_change(struct ath_hw *ah, return true; } +static void ath9k_hw_apply_gpio_override(struct ath_hw *ah) +{ + u32 gpio_mask = ah->gpio_mask; + int i; + + for (i = 0; gpio_mask; i++, gpio_mask >>= 1) { + if (!(gpio_mask & 1)) + continue; + + ath9k_hw_cfg_output(ah, i, AR_GPIO_OUTPUT_MUX_AS_OUTPUT); + ath9k_hw_set_gpio(ah, i, !!(ah->gpio_val & BIT(i))); + } +} + bool ath9k_hw_check_alive(struct ath_hw *ah) { int count = 50; @@ -1500,6 +1514,8 @@ int ath9k_hw_reset(struct ath_hw *ah, struct ath9k_channel *chan, if (AR_SREV_9300_20_OR_LATER(ah)) ar9003_hw_bb_watchdog_config(ah); + ath9k_hw_apply_gpio_override(ah); + return 0; } EXPORT_SYMBOL(ath9k_hw_reset); |