kernel: mac80211: set the parent of the ath9k gpio_chip

This allows gpiolib to re-use ath9k's devicetree node as GPIO
controller.
Example:

ath9k: ath9k@0 {
	#gpio-cells = <2>;
	gpio-controller;
}

Now the ath9k node can be used just like any other GPIO controller:
	gpios = <&ath9k 1 GPIO_ACTIVE_HIGH>;

Signed-off-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>

package/kernel/mac80211/patches/548-ath9k_enable_gpio_chip.patch

@@ -45,7 +45,7 @@ Signed-off-by: Felix Fietkau <nbd@nbd.name>
  #ifdef CPTCFG_ATH9K_DEBUGFS
 --- a/drivers/net/wireless/ath/ath9k/gpio.c
 +++ b/drivers/net/wireless/ath/ath9k/gpio.c
-@@ -16,13 +16,130 @@
+@@ -16,13 +16,135 @@
  
  #include "ath9k.h"
  #include <linux/ath9k_platform.h>
@@ -125,6 +125,11 @@ Signed-off-by: Felix Fietkau <nbd@nbd.name>
 +
 +	snprintf(gc->label, sizeof(gc->label), "ath9k-%s",
 +		 wiphy_name(sc->hw->wiphy));
++#if LINUX_VERSION_CODE >= KERNEL_VERSION(4,5,0)
++	gc->gchip.parent = sc->dev;
++#else
++	gc->gchip.dev = sc->dev;
++#endif
 +	gc->gchip.label = gc->label;
 +	gc->gchip.base = -1;	/* determine base automatically */
 +	gc->gchip.ngpio = ah->caps.num_gpio_pins;
@@ -178,7 +183,7 @@ Signed-off-by: Felix Fietkau <nbd@nbd.name>
  static void ath_fill_led_pin(struct ath_softc *sc)
  {
  	struct ath_hw *ah = sc->sc_ah;
-@@ -80,6 +197,12 @@ static int ath_add_led(struct ath_softc
+@@ -80,6 +202,12 @@ static int ath_add_led(struct ath_softc
  	else
  		ath9k_hw_set_gpio(sc->sc_ah, gpio->gpio, gpio->active_low);
  
@@ -191,7 +196,7 @@ Signed-off-by: Felix Fietkau <nbd@nbd.name>
  	return 0;
  }
  
-@@ -136,12 +259,18 @@ void ath_deinit_leds(struct ath_softc *s
+@@ -136,12 +264,18 @@ void ath_deinit_leds(struct ath_softc *s
  
  	while (!list_empty(&sc->leds)) {
  		led = list_first_entry(&sc->leds, struct ath_led, list);
@@ -210,7 +215,7 @@ Signed-off-by: Felix Fietkau <nbd@nbd.name>
  }
  
  void ath_init_leds(struct ath_softc *sc)
-@@ -158,6 +287,8 @@ void ath_init_leds(struct ath_softc *sc)
+@@ -158,6 +292,8 @@ void ath_init_leds(struct ath_softc *sc)
  
  	ath_fill_led_pin(sc);
  
@@ -219,7 +224,7 @@ Signed-off-by: Felix Fietkau <nbd@nbd.name>
  	if (pdata && pdata->led_name)
  		strncpy(led_name, pdata->led_name, sizeof(led_name));
  	else
-@@ -178,6 +309,7 @@ void ath_init_leds(struct ath_softc *sc)
+@@ -178,6 +314,7 @@ void ath_init_leds(struct ath_softc *sc)
  	for (i = 0; i < pdata->num_leds; i++)
  		ath_create_platform_led(sc, &pdata->leds[i]);
  }

package/kernel/mac80211/patches/549-ath9k_enable_gpio_buttons.patch

@@ -29,7 +29,7 @@ Signed-off-by: Felix Fietkau <nbd@nbd.name>
  
  #ifdef CPTCFG_MAC80211_LEDS
  
-@@ -124,6 +126,64 @@ static void ath9k_unregister_gpio_chip(s
+@@ -129,6 +131,64 @@ static void ath9k_unregister_gpio_chip(s
  	sc->gpiochip = NULL;
  }
  
@@ -94,7 +94,7 @@ Signed-off-by: Felix Fietkau <nbd@nbd.name>
  #else /* CONFIG_GPIOLIB */
  
  static inline void ath9k_register_gpio_chip(struct ath_softc *sc)
-@@ -134,6 +194,14 @@ static inline void ath9k_unregister_gpio
+@@ -139,6 +199,14 @@ static inline void ath9k_unregister_gpio
  {
  }
  
@@ -109,7 +109,7 @@ Signed-off-by: Felix Fietkau <nbd@nbd.name>
  #endif /* CONFIG_GPIOLIB */
  
  /********************************/
-@@ -257,6 +325,7 @@ void ath_deinit_leds(struct ath_softc *s
+@@ -262,6 +330,7 @@ void ath_deinit_leds(struct ath_softc *s
  {
  	struct ath_led *led;
  
@@ -117,7 +117,7 @@ Signed-off-by: Felix Fietkau <nbd@nbd.name>
  	while (!list_empty(&sc->leds)) {
  		led = list_first_entry(&sc->leds, struct ath_led, list);
  #ifdef CONFIG_GPIOLIB
-@@ -288,6 +357,7 @@ void ath_init_leds(struct ath_softc *sc)
+@@ -293,6 +362,7 @@ void ath_init_leds(struct ath_softc *sc)
  	ath_fill_led_pin(sc);
  
  	ath9k_register_gpio_chip(sc);
@@ -125,7 +125,7 @@ Signed-off-by: Felix Fietkau <nbd@nbd.name>
  
  	if (pdata && pdata->led_name)
  		strncpy(led_name, pdata->led_name, sizeof(led_name));
-@@ -303,7 +373,7 @@ void ath_init_leds(struct ath_softc *sc)
+@@ -308,7 +378,7 @@ void ath_init_leds(struct ath_softc *sc)
  	ath_create_gpio_led(sc, sc->sc_ah->led_pin, led_name, trigger,
  			   !sc->sc_ah->config.led_active_high);