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|
--- a/drivers/net/wireless/ath/ath9k/ath9k.h
+++ b/drivers/net/wireless/ath/ath9k/ath9k.h
@@ -557,6 +557,9 @@ struct ath9k_wow_pattern {
void ath_init_leds(struct ath_softc *sc);
void ath_deinit_leds(struct ath_softc *sc);
void ath_fill_led_pin(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)
{
@@ -692,6 +695,13 @@ enum spectral_mode {
SPECTRAL_CHANSCAN,
};
+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;
@@ -733,9 +743,8 @@ struct ath_softc {
struct ieee80211_supported_band sbands[IEEE80211_NUM_BANDS];
#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
struct ath9k_hw_cal_data caldata;
--- a/drivers/net/wireless/ath/ath9k/gpio.c
+++ b/drivers/net/wireless/ath/ath9k/gpio.c
@@ -24,40 +24,102 @@
static void ath_led_brightness(struct led_classdev *led_cdev,
enum led_brightness brightness)
{
- struct ath_softc *sc = container_of(led_cdev, struct ath_softc, led_cdev);
- ath9k_hw_set_gpio(sc->sc_ah, sc->sc_ah->led_pin, (brightness == LED_OFF));
+ 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_cfg_output(sc->sc_ah, gpio->gpio,
+ AR_GPIO_OUTPUT_MUX_AS_OUTPUT);
+
+ /* LED off */
+ ath9k_hw_set_gpio(sc->sc_ah, gpio->gpio, gpio->active_low);
+
+ return 0;
+}
+
+int ath_create_gpio_led(struct ath_softc *sc, int gpio_num, const char *name,
+ const char *trigger, bool active_low)
+{
+ struct ath_led *led;
+ struct gpio_led *gpio;
+ char *_name;
+ int ret;
+
+ 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);
+
+ 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);
+ 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);
+ 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;
- if (!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 (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, 1);
}
void ath_fill_led_pin(struct ath_softc *sc)
--- a/drivers/net/wireless/ath/ath9k/init.c
+++ b/drivers/net/wireless/ath/ath9k/init.c
@@ -891,7 +891,7 @@ 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
@@ -1825,6 +1825,61 @@ 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)
{
@@ -1847,6 +1902,10 @@ 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_file("dma", S_IRUSR, sc->debug.debugfs_phy, sc,
&fops_dma);
debugfs_create_file("interrupt", S_IRUSR, sc->debug.debugfs_phy, sc,
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