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ath9k: Fix LED configuration

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On some x86 platforms, the LED gpio is active high
instead of active low. Identify such cards and modify
the GPIO usage to make sure LED works properly.

Cc: Russell Hu <rhu@qca.qualcomm.com>
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
2014-11-16 06:11:02 +05:30
committed by John W. Linville
parent 46270d077a
commit aeeb206579
6 changed files with 19 additions and 5 deletions
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9
drivers/net/wireless/ath/ath9k/gpio.c
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@@ -25,7 +25,12 @@ static void ath_led_brightness(struct led_classdev *led_cdev,
enum led_brightness brightness)
{
struct ath_softc *sc = container_of(led_cdev, struct ath_softc, led_cdev);
ath9k_hw_set_gpio(sc->sc_ah, sc->sc_ah->led_pin, (brightness == LED_OFF));
u32 val = (brightness == LED_OFF);
if (sc->sc_ah->config.led_active_high)
val = !val;
ath9k_hw_set_gpio(sc->sc_ah, sc->sc_ah->led_pin, val);
}
void ath_deinit_leds(struct ath_softc *sc)
@@ -82,7 +87,7 @@ void ath_fill_led_pin(struct ath_softc *sc)
ath9k_hw_cfg_output(ah, ah->led_pin, AR_GPIO_OUTPUT_MUX_AS_OUTPUT);
/* LED off, active low */
ath9k_hw_set_gpio(ah, ah->led_pin, 1);
ath9k_hw_set_gpio(ah, ah->led_pin, (ah->config.led_active_high) ? 0 : 1);
}
#endif