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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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1
drivers/net/wireless/ath/ath9k/ath9k.h
View file

@ -931,6 +931,7 @@ void ath_ant_comb_scan(struct ath_softc *sc, struct ath_rx_status *rs);
#define ATH9K_PCI_AR9565_2ANT 0x0100
#define ATH9K_PCI_NO_PLL_PWRSAVE 0x0200
#define ATH9K_PCI_KILLER 0x0400
#define ATH9K_PCI_LED_ACT_HI 0x0800
/*
* Default cache line size, in bytes.

9
drivers/net/wireless/ath/ath9k/gpio.c
View file

@ -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

1
drivers/net/wireless/ath/ath9k/hw.h
View file

@ -329,6 +329,7 @@ struct ath9k_ops_config {
bool alt_mingainidx;
bool no_pll_pwrsave;
bool tx_gain_buffalo;
bool led_active_high;
};
enum ath9k_int {

3
drivers/net/wireless/ath/ath9k/init.c
View file

@ -441,6 +441,9 @@ static void ath9k_init_pcoem_platform(struct ath_softc *sc)
ah->config.no_pll_pwrsave = true;
ath_info(common, "Disable PLL PowerSave\n");
}
if (sc->driver_data & ATH9K_PCI_LED_ACT_HI)
ah->config.led_active_high = true;
}
static void ath9k_eeprom_request_cb(const struct firmware *eeprom_blob,

6
drivers/net/wireless/ath/ath9k/main.c
View file

@ -727,7 +727,8 @@ static int ath9k_start(struct ieee80211_hw *hw)
if (ah->led_pin >= 0) {
ath9k_hw_cfg_output(ah, ah->led_pin,
AR_GPIO_OUTPUT_MUX_AS_OUTPUT);
ath9k_hw_set_gpio(ah, ah->led_pin, 0);
ath9k_hw_set_gpio(ah, ah->led_pin,
(ah->config.led_active_high) ? 1 : 0);
}
/*
@ -869,7 +870,8 @@ static void ath9k_stop(struct ieee80211_hw *hw)
spin_lock_bh(&sc->sc_pcu_lock);
if (ah->led_pin >= 0) {
ath9k_hw_set_gpio(ah, ah->led_pin, 1);
ath9k_hw_set_gpio(ah, ah->led_pin,
(ah->config.led_active_high) ? 0 : 1);
ath9k_hw_cfg_gpio_input(ah, ah->led_pin);
}

4
drivers/net/wireless/ath/ath9k/pci.c
View file

@ -657,7 +657,9 @@ static const struct pci_device_id ath_pci_id_table[] = {
0x0036,
PCI_VENDOR_ID_DELL,
0x020E),
.driver_data = ATH9K_PCI_AR9565_2ANT | ATH9K_PCI_BT_ANT_DIV },
.driver_data = ATH9K_PCI_AR9565_2ANT |
ATH9K_PCI_BT_ANT_DIV |
ATH9K_PCI_LED_ACT_HI},
/* PCI-E AR9565 (WB335) */
{ PCI_VDEVICE(ATHEROS, 0x0036),