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ath9k: add extra GPIO led support

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ar9550 or later chips, the AR_GPIO_IN_OUT register only can
control GPIO[0:3]. For the extra GPIO, use standard GPIO calls
instead of WMAC internal registers.

Signed-off-by: Miaoqing Pan <miaoqing@qca.qualcomm.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
This commit is contained in:
Miaoqing Pan 2015-04-01 10:19:57 +08:00 committed by Kalle Valo
parent fcc658dabf
commit 61b559dea4
4 changed files with 27 additions and 3 deletions
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8
drivers/net/wireless/ath/ath9k/gpio.c
View File

@ -69,9 +69,15 @@ void ath_fill_led_pin(struct ath_softc *sc)
{
struct ath_hw *ah = sc->sc_ah;
if (AR_SREV_9100(ah) || (ah->led_pin >= 0))
if (AR_SREV_9100(ah))
return;
if (ah->led_pin >= 0) {
if (!((1 << ah->led_pin) & AR_GPIO_OE_OUT_MASK))
ath9k_hw_request_gpio(ah, ah->led_pin, "ath9k-led");
return;
}
if (AR_SREV_9287(ah))
ah->led_pin = ATH_LED_PIN_9287;
else if (AR_SREV_9485(sc->sc_ah))

17
drivers/net/wireless/ath/ath9k/hw.c
View File

@ -20,6 +20,7 @@
#include <linux/time.h>
#include <linux/bitops.h>
#include <linux/etherdevice.h>
#include <linux/gpio.h>
#include <asm/unaligned.h>
#include "hw.h"
@ -2711,11 +2712,23 @@ void ath9k_hw_set_gpio(struct ath_hw *ah, u32 gpio, u32 val)
if (AR_SREV_9271(ah))
val = ~val;
REG_RMW(ah, AR_GPIO_IN_OUT, ((val & 1) << gpio),
AR_GPIO_BIT(gpio));
if ((1 << gpio) & AR_GPIO_OE_OUT_MASK)
REG_RMW(ah, AR_GPIO_IN_OUT, ((val & 1) << gpio),
AR_GPIO_BIT(gpio));
else
gpio_set_value(gpio, val & 1);
}
EXPORT_SYMBOL(ath9k_hw_set_gpio);
void ath9k_hw_request_gpio(struct ath_hw *ah, u32 gpio, const char *label)
{
if (gpio >= ah->caps.num_gpio_pins)
return;
gpio_request_one(gpio, GPIOF_DIR_OUT | GPIOF_INIT_LOW, label);
}
EXPORT_SYMBOL(ath9k_hw_request_gpio);
void ath9k_hw_setantenna(struct ath_hw *ah, u32 antenna)
{
REG_WRITE(ah, AR_DEF_ANTENNA, (antenna & 0x7));

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

@ -1024,6 +1024,7 @@ u32 ath9k_hw_gpio_get(struct ath_hw *ah, u32 gpio);
void ath9k_hw_cfg_output(struct ath_hw *ah, u32 gpio,
u32 ah_signal_type);
void ath9k_hw_set_gpio(struct ath_hw *ah, u32 gpio, u32 val);
void ath9k_hw_request_gpio(struct ath_hw *ah, u32 gpio, const char *label);
void ath9k_hw_setantenna(struct ath_hw *ah, u32 antenna);
/* General Operation */

4
drivers/net/wireless/ath/ath9k/reg.h
View File

@ -958,6 +958,8 @@
#define AR_SREV_9550(_ah) \
(((_ah)->hw_version.macVersion == AR_SREV_VERSION_9550))
#define AR_SREV_9550_OR_LATER(_ah) \
(((_ah)->hw_version.macVersion >= AR_SREV_VERSION_9550))
#define AR_SREV_9580(_ah) \
(((_ah)->hw_version.macVersion == AR_SREV_VERSION_9580) && \
@ -1128,6 +1130,8 @@ enum {
#define AR_GPIO_OE_OUT (AR_SREV_9340(ah) ? 0x4030 : \
(AR_SREV_9300_20_OR_LATER(ah) ? 0x4050 : 0x404c))
#define AR_GPIO_OE_OUT_MASK (AR_SREV_9550_OR_LATER(ah) ? \
0x0000000F : 0xFFFFFFFF)
#define AR_GPIO_OE_OUT_DRV 0x3
#define AR_GPIO_OE_OUT_DRV_NO 0x0
#define AR_GPIO_OE_OUT_DRV_LOW 0x1