--- /dev/null
+--- a/drivers/net/wireless/ath/ath9k/ath9k.h
++++ b/drivers/net/wireless/ath/ath9k/ath9k.h
+@@ -850,6 +850,9 @@ static inline int ath9k_dump_btcoex(stru
+ #ifdef CPTCFG_MAC80211_LEDS
+ void ath_init_leds(struct ath_softc *sc);
+ void ath_deinit_leds(struct ath_softc *sc);
++int ath_create_gpio_led(struct ath_softc *sc, int gpio, const char *name,
++ const char *trigger, bool active_low);
++
+ #else
+ static inline void ath_init_leds(struct ath_softc *sc)
+ {
+@@ -991,6 +994,13 @@ void ath_ant_comb_scan(struct ath_softc
+ #define AIRTIME_USE_NEW_QUEUES BIT(2)
+ #define AIRTIME_ACTIVE(flags) (!!(flags & (AIRTIME_USE_TX|AIRTIME_USE_RX)))
+
++struct ath_led {
++ struct list_head list;
++ struct ath_softc *sc;
++ const struct gpio_led *gpio;
++ struct led_classdev cdev;
++};
++
+ struct ath_softc {
+ struct ieee80211_hw *hw;
+ struct device *dev;
+@@ -1046,9 +1056,8 @@ struct ath_softc {
+ spinlock_t chan_lock;
+
+ #ifdef CPTCFG_MAC80211_LEDS
+- bool led_registered;
+- char led_name[32];
+- struct led_classdev led_cdev;
++ const char *led_default_trigger;
++ struct list_head leds;
+ #endif
+
+ #ifdef CPTCFG_ATH9K_DEBUGFS
+--- a/drivers/net/wireless/ath/ath9k/gpio.c
++++ b/drivers/net/wireless/ath/ath9k/gpio.c
+@@ -39,61 +39,111 @@ static void ath_fill_led_pin(struct ath_
+ else
+ ah->led_pin = ATH_LED_PIN_DEF;
+ }
++}
++
++static void ath_led_brightness(struct led_classdev *led_cdev,
++ enum led_brightness brightness)
++{
++ struct ath_led *led = container_of(led_cdev, struct ath_led, cdev);
++ struct ath_softc *sc = led->sc;
++
++ ath9k_ps_wakeup(sc);
++ ath9k_hw_set_gpio(sc->sc_ah, led->gpio->gpio,
++ (brightness != LED_OFF) ^ led->gpio->active_low);
++ ath9k_ps_restore(sc);
++}
++
++static int ath_add_led(struct ath_softc *sc, struct ath_led *led)
++{
++ const struct gpio_led *gpio = led->gpio;
++ int ret;
++
++ led->cdev.name = gpio->name;
++ led->cdev.default_trigger = gpio->default_trigger;
++ led->cdev.brightness_set = ath_led_brightness;
++
++ ret = led_classdev_register(wiphy_dev(sc->hw->wiphy), &led->cdev);
++ if (ret < 0)
++ return ret;
++
++ led->sc = sc;
++ list_add(&led->list, &sc->leds);
+
+ /* Configure gpio for output */
+- ath9k_hw_gpio_request_out(ah, ah->led_pin, "ath9k-led",
++ ath9k_hw_gpio_request_out(sc->sc_ah, gpio->gpio, gpio->name,
+ AR_GPIO_OUTPUT_MUX_AS_OUTPUT);
+
+- /* LED off, active low */
+- ath9k_hw_set_gpio(ah, ah->led_pin, ah->config.led_active_high ? 0 : 1);
++ /* LED off */
++ ath9k_hw_set_gpio(sc->sc_ah, gpio->gpio, gpio->active_low);
++
++ return 0;
+ }
+
+-static void ath_led_brightness(struct led_classdev *led_cdev,
+- enum led_brightness brightness)
++int ath_create_gpio_led(struct ath_softc *sc, int gpio_num, const char *name,
++ const char *trigger, bool active_low)
+ {
+- struct ath_softc *sc = container_of(led_cdev, struct ath_softc, led_cdev);
+- u32 val = (brightness == LED_OFF);
++ struct ath_led *led;
++ struct gpio_led *gpio;
++ char *_name;
++ int ret;
+
+- if (sc->sc_ah->config.led_active_high)
+- val = !val;
++ led = kzalloc(sizeof(*led) + sizeof(*gpio) + strlen(name) + 1,
++ GFP_KERNEL);
++ if (!led)
++ return -ENOMEM;
++
++ led->gpio = gpio = (struct gpio_led *) (led + 1);
++ _name = (char *) (led->gpio + 1);
++
++ strcpy(_name, name);
++ gpio->name = _name;
++ gpio->gpio = gpio_num;
++ gpio->active_low = active_low;
++ gpio->default_trigger = trigger;
++
++ ret = ath_add_led(sc, led);
++ if (unlikely(ret < 0))
++ kfree(led);
+
+- ath9k_hw_set_gpio(sc->sc_ah, sc->sc_ah->led_pin, val);
++ return ret;
+ }
+
+ void ath_deinit_leds(struct ath_softc *sc)
+ {
+- if (!sc->led_registered)
+- return;
++ struct ath_led *led;
+
+- ath_led_brightness(&sc->led_cdev, LED_OFF);
+- led_classdev_unregister(&sc->led_cdev);
+-
+- ath9k_hw_gpio_free(sc->sc_ah, sc->sc_ah->led_pin);
++ while (!list_empty(&sc->leds)) {
++ led = list_first_entry(&sc->leds, struct ath_led, list);
++ list_del(&led->list);
++ ath_led_brightness(&led->cdev, LED_OFF);
++ led_classdev_unregister(&led->cdev);
++ ath9k_hw_gpio_free(sc->sc_ah, led->gpio->gpio);
++ kfree(led);
++ }
+ }
+
+ void ath_init_leds(struct ath_softc *sc)
+ {
+- int ret;
++ char led_name[32];
++ const char *trigger;
++
++ INIT_LIST_HEAD(&sc->leds);
+
+ if (AR_SREV_9100(sc->sc_ah))
+ return;
+
+ ath_fill_led_pin(sc);
+
+- if (!ath9k_led_blink)
+- sc->led_cdev.default_trigger =
+- ieee80211_get_radio_led_name(sc->hw);
+-
+- snprintf(sc->led_name, sizeof(sc->led_name),
+- "ath9k-%s", wiphy_name(sc->hw->wiphy));
+- sc->led_cdev.name = sc->led_name;
+- sc->led_cdev.brightness_set = ath_led_brightness;
++ snprintf(led_name, sizeof(led_name), "ath9k-%s",
++ wiphy_name(sc->hw->wiphy));
+
+- ret = led_classdev_register(wiphy_dev(sc->hw->wiphy), &sc->led_cdev);
+- if (ret < 0)
+- return;
++ if (ath9k_led_blink)
++ trigger = sc->led_default_trigger;
++ else
++ trigger = ieee80211_get_radio_led_name(sc->hw);
+
+- sc->led_registered = true;
++ ath_create_gpio_led(sc, sc->sc_ah->led_pin, led_name, trigger,
++ !sc->sc_ah->config.led_active_high);
+ }
+ #endif
+
+--- a/drivers/net/wireless/ath/ath9k/init.c
++++ b/drivers/net/wireless/ath/ath9k/init.c
+@@ -1000,7 +1000,7 @@ int ath9k_init_device(u16 devid, struct
+
+ #ifdef CPTCFG_MAC80211_LEDS
+ /* must be initialized before ieee80211_register_hw */
+- sc->led_cdev.default_trigger = ieee80211_create_tpt_led_trigger(sc->hw,
++ sc->led_default_trigger = ieee80211_create_tpt_led_trigger(sc->hw,
+ IEEE80211_TPT_LEDTRIG_FL_RADIO, ath9k_tpt_blink,
+ ARRAY_SIZE(ath9k_tpt_blink));
+ #endif
+--- a/drivers/net/wireless/ath/ath9k/debug.c
++++ b/drivers/net/wireless/ath/ath9k/debug.c
+@@ -1466,6 +1466,61 @@ static const struct file_operations fops
+ .llseek = default_llseek,
+ };
+
++#ifdef CONFIG_MAC80211_LEDS
++
++static ssize_t write_file_gpio_led(struct file *file, const char __user *ubuf,
++ size_t count, loff_t *ppos)
++{
++ struct ath_softc *sc = file->private_data;
++ char buf[32], *str, *name, *c;
++ ssize_t len;
++ unsigned int gpio;
++ bool active_low = false;
++
++ len = min(count, sizeof(buf) - 1);
++ if (copy_from_user(buf, ubuf, len))
++ return -EFAULT;
++
++ buf[len] = '\0';
++ name = strchr(buf, ',');
++ if (!name)
++ return -EINVAL;
++
++ *(name++) = 0;
++ if (!*name)
++ return -EINVAL;
++
++ c = strchr(name, '\n');
++ if (c)
++ *c = 0;
++
++ str = buf;
++ if (*str == '!') {
++ str++;
++ active_low = true;
++ }
++
++ if (kstrtouint(str, 0, &gpio) < 0)
++ return -EINVAL;
++
++ if (gpio >= sc->sc_ah->caps.num_gpio_pins)
++ return -EINVAL;
++
++ if (ath_create_gpio_led(sc, gpio, name, NULL, active_low) < 0)
++ return -EINVAL;
++
++ return count;
++}
++
++static const struct file_operations fops_gpio_led = {
++ .write = write_file_gpio_led,
++ .open = simple_open,
++ .owner = THIS_MODULE,
++ .llseek = default_llseek,
++};
++
++#endif
++
+
+ int ath9k_init_debug(struct ath_hw *ah)
+ {
+@@ -1490,6 +1545,10 @@ int ath9k_init_debug(struct ath_hw *ah)
+ &fops_eeprom);
+ debugfs_create_file("chanbw", S_IRUSR | S_IWUSR, sc->debug.debugfs_phy,
+ sc, &fops_chanbw);
++#ifdef CONFIG_MAC80211_LEDS
++ debugfs_create_file("gpio_led", S_IWUSR,
++ sc->debug.debugfs_phy, sc, &fops_gpio_led);
++#endif
+ debugfs_create_devm_seqfile(sc->dev, "dma", sc->debug.debugfs_phy,
+ read_file_dma);
+ debugfs_create_devm_seqfile(sc->dev, "interrupt", sc->debug.debugfs_phy,
projects / openwrt / openwrt.git / blobdiff