diff options
Diffstat (limited to 'package/kernel/mac80211/patches/ath9k/549-ath9k_enable_gpio_buttons.patch')
| -rw-r--r-- | package/kernel/mac80211/patches/ath9k/549-ath9k_enable_gpio_buttons.patch | 143 |
1 files changed, 143 insertions, 0 deletions
diff --git a/package/kernel/mac80211/patches/ath9k/549-ath9k_enable_gpio_buttons.patch b/package/kernel/mac80211/patches/ath9k/549-ath9k_enable_gpio_buttons.patch new file mode 100644 index 0000000000..83076b8ae4 --- /dev/null +++ b/package/kernel/mac80211/patches/ath9k/549-ath9k_enable_gpio_buttons.patch @@ -0,0 +1,143 @@ +From: Michal Cieslakiewicz <michal.cieslakiewicz@wp.pl> +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 <michal.cieslakiewicz@wp.pl> +Signed-off-by: Felix Fietkau <nbd@nbd.name> +--- +--- a/drivers/net/wireless/ath/ath9k/ath9k.h ++++ b/drivers/net/wireless/ath/ath9k/ath9k.h +@@ -1056,6 +1056,7 @@ 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 <linux/ath9k_platform.h> + #include <linux/gpio.h> ++#include <linux/platform_device.h> ++#include <linux/gpio_keys.h> + + #ifdef CPTCFG_MAC80211_LEDS + +@@ -133,6 +135,67 @@ 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++) { ++ if (pdata->btns[i].gpio == sc->sc_ah->led_pin) ++ sc->sc_ah->led_pin = -1; ++ ++ ath9k_hw_gpio_request_in(sc->sc_ah, pdata->btns[i].gpio, ++ "ath9k-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) +@@ -143,6 +206,14 @@ 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 */ + + /********************************/ +@@ -266,6 +337,7 @@ 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 +@@ -305,6 +377,7 @@ void ath_init_leds(struct ath_softc *sc) + } + + ath_fill_led_pin(sc); ++ ath9k_init_buttons(sc); + + if (pdata && pdata->leds && pdata->num_leds) + for (i = 0; i < pdata->num_leds; i++) { +--- a/include/linux/ath9k_platform.h ++++ b/include/linux/ath9k_platform.h +@@ -49,6 +49,10 @@ struct ath9k_platform_data { + + int num_leds; + const struct gpio_led *leds; ++ ++ unsigned num_btns; ++ const struct gpio_keys_button *btns; ++ unsigned btn_poll_interval; + }; + + #endif /* _LINUX_ATH9K_PLATFORM_H */ |