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ath9k: Fix LED configuration 

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
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

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),