From: Matthias Schiffer Date: Sun, 29 May 2016 13:39:10 +0200 Subject: mac80211: rework gpio chip/button support to build on platforms without CONFIG_GPIOLIB Signed-off-by: Felix Fietkau Backport of r48938 diff --git a/package/kernel/mac80211/patches/548-ath9k_enable_gpio_chip.patch b/package/kernel/mac80211/patches/548-ath9k_enable_gpio_chip.patch new file mode 100644 index 0000000..f91d85c --- /dev/null +++ b/package/kernel/mac80211/patches/548-ath9k_enable_gpio_chip.patch @@ -0,0 +1,235 @@ +From: Michal Cieslakiewicz +Date: Sun, 31 Jan 2016 21:01:31 +0100 +Subject: [PATCH v4 4/8] mac80211: ath9k: enable access to GPIO + +Enable access to GPIO chip and its pins for Atheros AR92xx +wireless devices. For now AR9285 and AR9287 are supported. + +Signed-off-by: Michal Cieslakiewicz +Signed-off-by: Felix Fietkau +--- +--- a/drivers/net/wireless/ath/ath9k/ath9k.h ++++ b/drivers/net/wireless/ath/ath9k/ath9k.h +@@ -24,6 +24,7 @@ + #include + #include + #include ++#include + + #include "common.h" + #include "debug.h" +@@ -963,6 +964,14 @@ struct ath_led { + struct led_classdev cdev; + }; + ++#ifdef CONFIG_GPIOLIB ++struct ath9k_gpio_chip { ++ struct ath_softc *sc; ++ char label[32]; ++ struct gpio_chip gchip; ++}; ++#endif ++ + struct ath_softc { + struct ieee80211_hw *hw; + struct device *dev; +@@ -1017,6 +1026,9 @@ struct ath_softc { + #ifdef CPTCFG_MAC80211_LEDS + const char *led_default_trigger; + struct list_head leds; ++#ifdef CONFIG_GPIOLIB ++ struct ath9k_gpio_chip *gpiochip; ++#endif + #endif + + #ifdef CPTCFG_ATH9K_DEBUGFS +--- a/drivers/net/wireless/ath/ath9k/gpio.c ++++ b/drivers/net/wireless/ath/ath9k/gpio.c +@@ -16,12 +16,138 @@ + + #include "ath9k.h" + #include ++#include ++ ++#ifdef CPTCFG_MAC80211_LEDS ++ ++#ifdef CONFIG_GPIOLIB ++ ++/***************/ ++/* GPIO Chip */ ++/***************/ ++ ++/* gpio_chip handler : set GPIO to input */ ++static int ath9k_gpio_pin_cfg_input(struct gpio_chip *chip, unsigned offset) ++{ ++ struct ath9k_gpio_chip *gc = container_of(chip, struct ath9k_gpio_chip, ++ gchip); ++ ++ ath9k_hw_cfg_gpio_input(gc->sc->sc_ah, offset); ++ ++ return 0; ++} ++ ++/* gpio_chip handler : set GPIO to output */ ++static int ath9k_gpio_pin_cfg_output(struct gpio_chip *chip, unsigned offset, ++ int value) ++{ ++ struct ath9k_gpio_chip *gc = container_of(chip, struct ath9k_gpio_chip, ++ gchip); ++ ++ ath9k_hw_cfg_output(gc->sc->sc_ah, offset, ++ AR_GPIO_OUTPUT_MUX_AS_OUTPUT); ++ ath9k_hw_set_gpio(gc->sc->sc_ah, offset, value); ++ ++ return 0; ++} ++ ++/* gpio_chip handler : query GPIO direction (0=out, 1=in) */ ++static int ath9k_gpio_pin_get_dir(struct gpio_chip *chip, unsigned offset) ++{ ++ struct ath9k_gpio_chip *gc = container_of(chip, struct ath9k_gpio_chip, ++ gchip); ++ struct ath_hw *ah = gc->sc->sc_ah; ++ ++ return !((REG_READ(ah, AR_GPIO_OE_OUT) >> (offset * 2)) & 3); ++} ++ ++/* gpio_chip handler : get GPIO pin value */ ++static int ath9k_gpio_pin_get(struct gpio_chip *chip, unsigned offset) ++{ ++ struct ath9k_gpio_chip *gc = container_of(chip, struct ath9k_gpio_chip, ++ gchip); ++ ++ return ath9k_hw_gpio_get(gc->sc->sc_ah, offset); ++} ++ ++/* gpio_chip handler : set GPIO pin to value */ ++static void ath9k_gpio_pin_set(struct gpio_chip *chip, unsigned offset, ++ int value) ++{ ++ struct ath9k_gpio_chip *gc = container_of(chip, struct ath9k_gpio_chip, ++ gchip); ++ ++ ath9k_hw_set_gpio(gc->sc->sc_ah, offset, value); ++} ++ ++/* register GPIO chip */ ++static void ath9k_register_gpio_chip(struct ath_softc *sc) ++{ ++ struct ath9k_gpio_chip *gc; ++ u16 ng; ++ ++ /* for now only AR9285 and AR9287 are recognized */ ++ if (AR_SREV_9287(sc->sc_ah)) ++ ng = AR9287_NUM_GPIO; ++ else if (AR_SREV_9285(sc->sc_ah)) ++ ng = AR9285_NUM_GPIO; ++ else ++ return; ++ ++ gc = kzalloc(sizeof(struct ath9k_gpio_chip), GFP_KERNEL); ++ if (!gc) ++ return; ++ ++ snprintf(gc->label, sizeof(gc->label), "ath9k-%s", ++ wiphy_name(sc->hw->wiphy)); ++ gc->gchip.label = gc->label; ++ gc->gchip.base = -1; /* determine base automatically */ ++ gc->gchip.ngpio = ng; ++ gc->gchip.direction_input = ath9k_gpio_pin_cfg_input; ++ gc->gchip.direction_output = ath9k_gpio_pin_cfg_output; ++ gc->gchip.get_direction = ath9k_gpio_pin_get_dir; ++ gc->gchip.get = ath9k_gpio_pin_get; ++ gc->gchip.set = ath9k_gpio_pin_set; ++ gc->gchip.owner = THIS_MODULE; ++ ++ if (gpiochip_add(&gc->gchip)) { ++ kfree(gc); ++ return; ++ } ++ ++ sc->gpiochip = gc; ++ gc->sc = sc; ++} ++ ++/* remove GPIO chip */ ++static void ath9k_unregister_gpio_chip(struct ath_softc *sc) ++{ ++ struct ath9k_gpio_chip *gc = sc->gpiochip; ++ ++ if (!gc) ++ return; ++ ++ gpiochip_remove(&gc->gchip); ++ kfree(gc); ++ sc->gpiochip = NULL; ++} ++ ++#else /* CONFIG_GPIOLIB */ ++ ++static inline void ath9k_register_gpio_chip(struct ath_softc *sc) ++{ ++} ++ ++static inline void ath9k_unregister_gpio_chip(struct ath_softc *sc) ++{ ++} ++ ++#endif /* CONFIG_GPIOLIB */ + + /********************************/ + /* LED functions */ + /********************************/ + +-#ifdef CPTCFG_MAC80211_LEDS + static void ath_led_brightness(struct led_classdev *led_cdev, + enum led_brightness brightness) + { +@@ -60,6 +186,12 @@ static int ath_add_led(struct ath_softc + else + ath9k_hw_set_gpio(sc->sc_ah, gpio->gpio, gpio->active_low); + ++#ifdef CONFIG_GPIOLIB ++ /* If there is GPIO chip configured, reserve LED pin */ ++ if (sc->gpiochip) ++ gpio_request(sc->gpiochip->gchip.base + gpio->gpio, gpio->name); ++#endif ++ + return 0; + } + +@@ -116,11 +248,17 @@ void ath_deinit_leds(struct ath_softc *s + + while (!list_empty(&sc->leds)) { + led = list_first_entry(&sc->leds, struct ath_led, list); ++#ifdef CONFIG_GPIOLIB ++ /* If there is GPIO chip configured, free LED pin */ ++ if (sc->gpiochip) ++ gpio_free(sc->gpiochip->gchip.base + led->gpio->gpio); ++#endif + list_del(&led->list); + ath_led_brightness(&led->cdev, LED_OFF); + led_classdev_unregister(&led->cdev); + kfree(led); + } ++ ath9k_unregister_gpio_chip(sc); + } + + void ath_init_leds(struct ath_softc *sc) +@@ -135,6 +273,8 @@ void ath_init_leds(struct ath_softc *sc) + if (AR_SREV_9100(sc->sc_ah)) + return; + ++ ath9k_register_gpio_chip(sc); ++ + if (pdata && pdata->led_name) + strncpy(led_name, pdata->led_name, sizeof(led_name)); + else +@@ -186,6 +326,7 @@ void ath_fill_led_pin(struct ath_softc * + /* LED off, active low */ + ath9k_hw_set_gpio(ah, ah->led_pin, (ah->config.led_active_high) ? 0 : 1); + } ++ + #endif + + /*******************/ diff --git a/package/kernel/mac80211/patches/549-ath9k_enable_gpio_buttons.patch b/package/kernel/mac80211/patches/549-ath9k_enable_gpio_buttons.patch new file mode 100644 index 0000000..0527406 --- /dev/null +++ b/package/kernel/mac80211/patches/549-ath9k_enable_gpio_buttons.patch @@ -0,0 +1,148 @@ +From: Michal Cieslakiewicz +Subject: [PATCH v5 5/8] mac80211: ath9k: enable GPIO buttons + +Enable platform-defined GPIO button support for ath9k device. +Key poller is activated for attached platform buttons. +Requires ath9k GPIO chip access. + +Signed-off-by: Michal Cieslakiewicz +Signed-off-by: Felix Fietkau +--- +--- a/drivers/net/wireless/ath/ath9k/ath9k.h ++++ b/drivers/net/wireless/ath/ath9k/ath9k.h +@@ -1028,6 +1028,7 @@ struct ath_softc { + struct list_head leds; + #ifdef CONFIG_GPIOLIB + struct ath9k_gpio_chip *gpiochip; ++ struct platform_device *btnpdev; /* gpio-keys-polled */ + #endif + #endif + +--- a/drivers/net/wireless/ath/ath9k/gpio.c ++++ b/drivers/net/wireless/ath/ath9k/gpio.c +@@ -17,6 +17,8 @@ + #include "ath9k.h" + #include + #include ++#include ++#include + + #ifdef CPTCFG_MAC80211_LEDS + +@@ -132,6 +134,63 @@ static void ath9k_unregister_gpio_chip(s + sc->gpiochip = NULL; + } + ++/******************/ ++/* GPIO Buttons */ ++/******************/ ++ ++/* add GPIO buttons */ ++static void ath9k_init_buttons(struct ath_softc *sc) ++{ ++ struct ath9k_platform_data *pdata = sc->dev->platform_data; ++ struct platform_device *pdev; ++ struct gpio_keys_platform_data gkpdata; ++ struct gpio_keys_button *bt; ++ int i; ++ ++ if (!sc->gpiochip) ++ return; ++ ++ if (!pdata || !pdata->btns || !pdata->num_btns) ++ return; ++ ++ bt = devm_kmemdup(sc->dev, pdata->btns, ++ pdata->num_btns * sizeof(struct gpio_keys_button), ++ GFP_KERNEL); ++ if (!bt) ++ return; ++ ++ for (i = 0; i < pdata->num_btns; i++) { ++ ath9k_hw_cfg_gpio_input(sc->sc_ah, pdata->btns[i].gpio); ++ bt[i].gpio = sc->gpiochip->gchip.base + pdata->btns[i].gpio; ++ } ++ ++ memset(&gkpdata, 0, sizeof(struct gpio_keys_platform_data)); ++ gkpdata.buttons = bt; ++ gkpdata.nbuttons = pdata->num_btns; ++ gkpdata.poll_interval = pdata->btn_poll_interval; ++ ++ pdev = platform_device_register_data(sc->dev, "gpio-keys-polled", ++ PLATFORM_DEVID_AUTO, &gkpdata, ++ sizeof(gkpdata)); ++ if (!IS_ERR_OR_NULL(pdev)) ++ sc->btnpdev = pdev; ++ else { ++ sc->btnpdev = NULL; ++ devm_kfree(sc->dev, bt); ++ } ++} ++ ++/* remove GPIO buttons */ ++static void ath9k_deinit_buttons(struct ath_softc *sc) ++{ ++ if (!sc->gpiochip || !sc->btnpdev) ++ return; ++ ++ platform_device_unregister(sc->btnpdev); ++ ++ sc->btnpdev = NULL; ++} ++ + #else /* CONFIG_GPIOLIB */ + + static inline void ath9k_register_gpio_chip(struct ath_softc *sc) +@@ -142,6 +201,14 @@ static inline void ath9k_unregister_gpio + { + } + ++static inline void ath9k_init_buttons(struct ath_softc *sc) ++{ ++} ++ ++static inline void ath9k_deinit_buttons(struct ath_softc *sc) ++{ ++} ++ + #endif /* CONFIG_GPIOLIB */ + + /********************************/ +@@ -246,6 +313,7 @@ void ath_deinit_leds(struct ath_softc *s + { + struct ath_led *led; + ++ ath9k_deinit_buttons(sc); + while (!list_empty(&sc->leds)) { + led = list_first_entry(&sc->leds, struct ath_led, list); + #ifdef CONFIG_GPIOLIB +@@ -274,6 +342,7 @@ void ath_init_leds(struct ath_softc *sc) + return; + + ath9k_register_gpio_chip(sc); ++ ath9k_init_buttons(sc); + + if (pdata && pdata->led_name) + strncpy(led_name, pdata->led_name, sizeof(led_name)); +@@ -289,7 +358,7 @@ 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); + +- if (!pdata) ++ if (!pdata || !pdata->leds || !pdata->num_leds) + return; + + for (i = 0; i < pdata->num_leds; i++) +--- a/include/linux/ath9k_platform.h ++++ b/include/linux/ath9k_platform.h +@@ -46,6 +46,10 @@ struct ath9k_platform_data { + int num_leds; + const struct gpio_led *leds; + const char *led_name; ++ ++ unsigned num_btns; ++ const struct gpio_keys_button *btns; ++ unsigned btn_poll_interval; + }; + + #endif /* _LINUX_ATH9K_PLATFORM_H */ diff --git a/package/kernel/mac80211/patches/549-ath9k_enable_gpio_chip.patch b/package/kernel/mac80211/patches/549-ath9k_enable_gpio_chip.patch deleted file mode 100644 index 55bb991..0000000 --- a/package/kernel/mac80211/patches/549-ath9k_enable_gpio_chip.patch +++ /dev/null @@ -1,243 +0,0 @@ -From: Michal Cieslakiewicz -Date: Sun, 31 Jan 2016 21:01:31 +0100 -Subject: [PATCH v4 4/8] mac80211: ath9k: enable access to GPIO - -Enable access to GPIO chip and its pins for Atheros AR92xx -wireless devices. For now AR9285 and AR9287 are supported. - -Signed-off-by: Michal Cieslakiewicz ---- - ath9k.h | 23 ++++++++++++ - gpio.c | 121 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ - init.c | 2 + - 3 files changed, 146 insertions(+) - ---- a/drivers/net/wireless/ath/ath9k/ath9k.h -+++ b/drivers/net/wireless/ath/ath9k/ath9k.h -@@ -24,6 +24,7 @@ - #include - #include - #include -+#include - - #include "common.h" - #include "debug.h" -@@ -817,6 +818,13 @@ void ath_fill_led_pin(struct ath_softc * - int ath_create_gpio_led(struct ath_softc *sc, int gpio, const char *name, - const char *trigger, bool active_low); - -+/***************/ -+/* GPIO Chip */ -+/***************/ -+ -+void ath9k_register_gpio_chip(struct ath_softc *sc); -+void ath9k_unregister_gpio_chip(struct ath_softc *sc); -+ - #else - static inline void ath_init_leds(struct ath_softc *sc) - { -@@ -828,6 +836,14 @@ static inline void ath_deinit_leds(struc - static inline void ath_fill_led_pin(struct ath_softc *sc) - { - } -+ -+static inline void ath9k_register_gpio_chip(struct ath_softc *sc) -+{ -+} -+ -+static inline void ath9k_unregister_gpio_chip(struct ath_softc *sc) -+{ -+} - #endif - - /************************/ -@@ -963,6 +979,12 @@ struct ath_led { - struct led_classdev cdev; - }; - -+struct ath9k_gpio_chip { -+ struct ath_softc *sc; -+ char label[32]; -+ struct gpio_chip gchip; -+}; -+ - struct ath_softc { - struct ieee80211_hw *hw; - struct device *dev; -@@ -1017,6 +1039,7 @@ struct ath_softc { - #ifdef CPTCFG_MAC80211_LEDS - const char *led_default_trigger; - struct list_head leds; -+ struct ath9k_gpio_chip *gpiochip; - #endif - - #ifdef CPTCFG_ATH9K_DEBUGFS ---- a/drivers/net/wireless/ath/ath9k/gpio.c -+++ b/drivers/net/wireless/ath/ath9k/gpio.c -@@ -22,6 +22,9 @@ - /********************************/ - - #ifdef CPTCFG_MAC80211_LEDS -+ -+#include -+ - static void ath_led_brightness(struct led_classdev *led_cdev, - enum led_brightness brightness) - { -@@ -60,6 +63,10 @@ static int ath_add_led(struct ath_softc - else - ath9k_hw_set_gpio(sc->sc_ah, gpio->gpio, gpio->active_low); - -+ /* If there is GPIO chip configured, reserve LED pin */ -+ if (sc->gpiochip) -+ gpio_request(sc->gpiochip->gchip.base + gpio->gpio, gpio->name); -+ - return 0; - } - -@@ -116,6 +123,9 @@ void ath_deinit_leds(struct ath_softc *s - - while (!list_empty(&sc->leds)) { - led = list_first_entry(&sc->leds, struct ath_led, list); -+ /* If there is GPIO chip configured, free LED pin */ -+ if (sc->gpiochip) -+ gpio_free(sc->gpiochip->gchip.base + led->gpio->gpio); - list_del(&led->list); - ath_led_brightness(&led->cdev, LED_OFF); - led_classdev_unregister(&led->cdev); -@@ -186,6 +196,117 @@ void ath_fill_led_pin(struct ath_softc * - /* LED off, active low */ - ath9k_hw_set_gpio(ah, ah->led_pin, (ah->config.led_active_high) ? 0 : 1); - } -+ -+/***************/ -+/* GPIO Chip */ -+/***************/ -+ -+/* gpio_chip handler : set GPIO to input */ -+static int ath9k_gpio_pin_cfg_input(struct gpio_chip *chip, unsigned offset) -+{ -+ struct ath9k_gpio_chip *gc = container_of(chip, struct ath9k_gpio_chip, -+ gchip); -+ -+ ath9k_hw_cfg_gpio_input(gc->sc->sc_ah, offset); -+ -+ return 0; -+} -+ -+/* gpio_chip handler : set GPIO to output */ -+static int ath9k_gpio_pin_cfg_output(struct gpio_chip *chip, unsigned offset, -+ int value) -+{ -+ struct ath9k_gpio_chip *gc = container_of(chip, struct ath9k_gpio_chip, -+ gchip); -+ -+ ath9k_hw_cfg_output(gc->sc->sc_ah, offset, -+ AR_GPIO_OUTPUT_MUX_AS_OUTPUT); -+ ath9k_hw_set_gpio(gc->sc->sc_ah, offset, value); -+ -+ return 0; -+} -+ -+/* gpio_chip handler : query GPIO direction (0=out, 1=in) */ -+static int ath9k_gpio_pin_get_dir(struct gpio_chip *chip, unsigned offset) -+{ -+ struct ath9k_gpio_chip *gc = container_of(chip, struct ath9k_gpio_chip, -+ gchip); -+ struct ath_hw *ah = gc->sc->sc_ah; -+ -+ return !((REG_READ(ah, AR_GPIO_OE_OUT) >> (offset * 2)) & 3); -+} -+ -+/* gpio_chip handler : get GPIO pin value */ -+static int ath9k_gpio_pin_get(struct gpio_chip *chip, unsigned offset) -+{ -+ struct ath9k_gpio_chip *gc = container_of(chip, struct ath9k_gpio_chip, -+ gchip); -+ -+ return ath9k_hw_gpio_get(gc->sc->sc_ah, offset); -+} -+ -+/* gpio_chip handler : set GPIO pin to value */ -+static void ath9k_gpio_pin_set(struct gpio_chip *chip, unsigned offset, -+ int value) -+{ -+ struct ath9k_gpio_chip *gc = container_of(chip, struct ath9k_gpio_chip, -+ gchip); -+ -+ ath9k_hw_set_gpio(gc->sc->sc_ah, offset, value); -+} -+ -+/* register GPIO chip */ -+void ath9k_register_gpio_chip(struct ath_softc *sc) -+{ -+ struct ath9k_gpio_chip *gc; -+ u16 ng; -+ -+ /* for now only AR9285 and AR9287 are recognized */ -+ if (AR_SREV_9287(sc->sc_ah)) -+ ng = AR9287_NUM_GPIO; -+ else if (AR_SREV_9285(sc->sc_ah)) -+ ng = AR9285_NUM_GPIO; -+ else -+ return; -+ -+ gc = kzalloc(sizeof(struct ath9k_gpio_chip), GFP_KERNEL); -+ if (!gc) -+ return; -+ -+ snprintf(gc->label, sizeof(gc->label), "ath9k-%s", -+ wiphy_name(sc->hw->wiphy)); -+ gc->gchip.label = gc->label; -+ gc->gchip.base = -1; /* determine base automatically */ -+ gc->gchip.ngpio = ng; -+ gc->gchip.direction_input = ath9k_gpio_pin_cfg_input; -+ gc->gchip.direction_output = ath9k_gpio_pin_cfg_output; -+ gc->gchip.get_direction = ath9k_gpio_pin_get_dir; -+ gc->gchip.get = ath9k_gpio_pin_get; -+ gc->gchip.set = ath9k_gpio_pin_set; -+ gc->gchip.owner = THIS_MODULE; -+ -+ if (gpiochip_add(&gc->gchip)) { -+ kfree(gc); -+ return; -+ } -+ -+ sc->gpiochip = gc; -+ gc->sc = sc; -+} -+ -+/* remove GPIO chip */ -+void ath9k_unregister_gpio_chip(struct ath_softc *sc) -+{ -+ struct ath9k_gpio_chip *gc = sc->gpiochip; -+ -+ if (!gc) -+ return; -+ -+ gpiochip_remove(&gc->gchip); -+ kfree(gc); -+ sc->gpiochip = NULL; -+} -+ - #endif - - /*******************/ ---- a/drivers/net/wireless/ath/ath9k/init.c -+++ b/drivers/net/wireless/ath/ath9k/init.c -@@ -975,6 +975,7 @@ int ath9k_init_device(u16 devid, struct - goto debug_cleanup; - } - -+ ath9k_register_gpio_chip(sc); - ath_init_leds(sc); - ath_start_rfkill_poll(sc); - -@@ -1022,6 +1023,7 @@ void ath9k_deinit_device(struct ath_soft - - wiphy_rfkill_stop_polling(sc->hw->wiphy); - ath_deinit_leds(sc); -+ ath9k_unregister_gpio_chip(sc); - - ath9k_ps_restore(sc); - diff --git a/package/kernel/mac80211/patches/550-ath9k_enable_gpio_buttons.patch b/package/kernel/mac80211/patches/550-ath9k_enable_gpio_buttons.patch deleted file mode 100644 index e3a8cec..0000000 --- a/package/kernel/mac80211/patches/550-ath9k_enable_gpio_buttons.patch +++ /dev/null @@ -1,169 +0,0 @@ -From: Michal Cieslakiewicz -Subject: [PATCH v5 5/8] mac80211: ath9k: enable GPIO buttons - -Enable platform-defined GPIO button support for ath9k device. -Key poller is activated for attached platform buttons. -Requires ath9k GPIO chip access. - -Signed-off-by: Michal Cieslakiewicz ---- - drivers/net/wireless/ath/ath9k/ath9k.h | 16 ++++++ - drivers/net/wireless/ath/ath9k/gpio.c | 77 +++++++++++++++++++++++++++++++++ - drivers/net/wireless/ath/ath9k/init.c | 2 - include/linux/ath9k_platform.h | 4 + - 4 files changed, 99 insertions(+) - ---- a/drivers/net/wireless/ath/ath9k/ath9k.h -+++ b/drivers/net/wireless/ath/ath9k/ath9k.h -@@ -825,6 +825,13 @@ int ath_create_gpio_led(struct ath_softc - void ath9k_register_gpio_chip(struct ath_softc *sc); - void ath9k_unregister_gpio_chip(struct ath_softc *sc); - -+/******************/ -+/* GPIO Buttons */ -+/******************/ -+ -+void ath9k_init_buttons(struct ath_softc *sc); -+void ath9k_deinit_buttons(struct ath_softc *sc); -+ - #else - static inline void ath_init_leds(struct ath_softc *sc) - { -@@ -844,6 +851,14 @@ static inline void ath9k_register_gpio_c - static inline void ath9k_unregister_gpio_chip(struct ath_softc *sc) - { - } -+ -+static inline void ath9k_init_buttons(struct ath_softc *sc) -+{ -+} -+ -+static inline void ath9k_deinit_buttons(struct ath_softc *sc) -+{ -+} - #endif - - /************************/ -@@ -1040,6 +1055,7 @@ struct ath_softc { - const char *led_default_trigger; - struct list_head leds; - struct ath9k_gpio_chip *gpiochip; -+ struct platform_device *btnpdev; /* gpio-keys-polled */ - #endif - - #ifdef CPTCFG_ATH9K_DEBUGFS ---- a/drivers/net/wireless/ath/ath9k/gpio.c -+++ b/drivers/net/wireless/ath/ath9k/gpio.c -@@ -24,6 +24,8 @@ - #ifdef CPTCFG_MAC80211_LEDS - - #include -+#include -+#include - - static void ath_led_brightness(struct led_classdev *led_cdev, - enum led_brightness brightness) -@@ -159,7 +161,7 @@ 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); - -- if (!pdata) -+ if (!pdata || !pdata->leds || !pdata->num_leds) - return; - - for (i = 0; i < pdata->num_leds; i++) -@@ -307,6 +309,63 @@ void ath9k_unregister_gpio_chip(struct a - sc->gpiochip = NULL; - } - -+/******************/ -+/* GPIO Buttons */ -+/******************/ -+ -+/* add GPIO buttons */ -+void ath9k_init_buttons(struct ath_softc *sc) -+{ -+ struct ath9k_platform_data *pdata = sc->dev->platform_data; -+ struct platform_device *pdev; -+ struct gpio_keys_platform_data gkpdata; -+ struct gpio_keys_button *bt; -+ int i; -+ -+ if (!sc->gpiochip) -+ return; -+ -+ if (!pdata || !pdata->btns || !pdata->num_btns) -+ return; -+ -+ bt = devm_kmemdup(sc->dev, pdata->btns, -+ pdata->num_btns * sizeof(struct gpio_keys_button), -+ GFP_KERNEL); -+ if (!bt) -+ return; -+ -+ for (i = 0; i < pdata->num_btns; i++) { -+ ath9k_hw_cfg_gpio_input(sc->sc_ah, pdata->btns[i].gpio); -+ bt[i].gpio = sc->gpiochip->gchip.base + pdata->btns[i].gpio; -+ } -+ -+ memset(&gkpdata, 0, sizeof(struct gpio_keys_platform_data)); -+ gkpdata.buttons = bt; -+ gkpdata.nbuttons = pdata->num_btns; -+ gkpdata.poll_interval = pdata->btn_poll_interval; -+ -+ pdev = platform_device_register_data(sc->dev, "gpio-keys-polled", -+ PLATFORM_DEVID_AUTO, &gkpdata, -+ sizeof(gkpdata)); -+ if (!IS_ERR_OR_NULL(pdev)) -+ sc->btnpdev = pdev; -+ else { -+ sc->btnpdev = NULL; -+ devm_kfree(sc->dev, bt); -+ } -+} -+ -+/* remove GPIO buttons */ -+void ath9k_deinit_buttons(struct ath_softc *sc) -+{ -+ if (!sc->gpiochip || !sc->btnpdev) -+ return; -+ -+ platform_device_unregister(sc->btnpdev); -+ -+ sc->btnpdev = NULL; -+} -+ - #endif - - /*******************/ ---- a/drivers/net/wireless/ath/ath9k/init.c -+++ b/drivers/net/wireless/ath/ath9k/init.c -@@ -977,6 +977,7 @@ int ath9k_init_device(u16 devid, struct - - ath9k_register_gpio_chip(sc); - ath_init_leds(sc); -+ ath9k_init_buttons(sc); - ath_start_rfkill_poll(sc); - - return 0; -@@ -1022,6 +1023,7 @@ void ath9k_deinit_device(struct ath_soft - ath9k_ps_wakeup(sc); - - wiphy_rfkill_stop_polling(sc->hw->wiphy); -+ ath9k_deinit_buttons(sc); - ath_deinit_leds(sc); - ath9k_unregister_gpio_chip(sc); - ---- a/include/linux/ath9k_platform.h -+++ b/include/linux/ath9k_platform.h -@@ -46,6 +46,10 @@ struct ath9k_platform_data { - int num_leds; - const struct gpio_led *leds; - const char *led_name; -+ -+ unsigned num_btns; -+ const struct gpio_keys_button *btns; -+ unsigned btn_poll_interval; - }; - - #endif /* _LINUX_ATH9K_PLATFORM_H */