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ath9k: add support for registering extra leds connected to the wmac gpio lines
git-svn-id: svn://svn.openwrt.org/openwrt/trunk@29530 3c298f89-4303-0410-b956-a3cf2f4a3e73
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258
package/mac80211/patches/580-ath9k_extra_leds.patch
Normal file
258
package/mac80211/patches/580-ath9k_extra_leds.patch
Normal file
@ -0,0 +1,258 @@
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--- a/drivers/net/wireless/ath/ath9k/ath9k.h
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+++ b/drivers/net/wireless/ath/ath9k/ath9k.h
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@@ -474,6 +474,9 @@ void ath9k_btcoex_timer_pause(struct ath
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#ifdef CONFIG_MAC80211_LEDS
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void ath_init_leds(struct ath_softc *sc);
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void ath_deinit_leds(struct ath_softc *sc);
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+int ath_create_gpio_led(struct ath_softc *sc, int gpio, const char *name,
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+ const char *trigger, bool active_low);
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+
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#else
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static inline void ath_init_leds(struct ath_softc *sc)
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{
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@@ -594,6 +597,13 @@ struct ath9k_vif_iter_data {
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int nothers; /* number of vifs not specified above. */
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};
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+struct ath_led {
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+ struct list_head list;
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+ struct ath_softc *sc;
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+ const struct gpio_led *gpio;
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+ struct led_classdev cdev;
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+};
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+
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struct ath_softc {
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struct ieee80211_hw *hw;
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struct device *dev;
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@@ -637,9 +647,8 @@ struct ath_softc {
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struct ieee80211_supported_band sbands[IEEE80211_NUM_BANDS];
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#ifdef CONFIG_MAC80211_LEDS
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- bool led_registered;
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- char led_name[32];
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- struct led_classdev led_cdev;
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+ const char *led_default_trigger;
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+ struct list_head leds;
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#endif
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struct ath9k_hw_cal_data caldata;
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--- a/drivers/net/wireless/ath/ath9k/gpio.c
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+++ b/drivers/net/wireless/ath/ath9k/gpio.c
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@@ -24,22 +24,89 @@
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static void ath_led_brightness(struct led_classdev *led_cdev,
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enum led_brightness brightness)
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{
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- struct ath_softc *sc = container_of(led_cdev, struct ath_softc, led_cdev);
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- ath9k_hw_set_gpio(sc->sc_ah, sc->sc_ah->led_pin, (brightness == LED_OFF));
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+ struct ath_led *led = container_of(led_cdev, struct ath_led, cdev);
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+ struct ath_softc *sc = led->sc;
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+
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+ ath9k_ps_wakeup(sc);
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+ ath9k_hw_set_gpio(sc->sc_ah, led->gpio->gpio,
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+ (brightness != LED_OFF) ^ led->gpio->active_low);
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+ ath9k_ps_restore(sc);
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+}
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+
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+static int ath_add_led(struct ath_softc *sc, struct ath_led *led)
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+{
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+ const struct gpio_led *gpio = led->gpio;
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+ int ret;
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+
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+ led->cdev.name = gpio->name;
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+ led->cdev.default_trigger = gpio->default_trigger;
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+ led->cdev.brightness_set = ath_led_brightness;
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+
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+ ret = led_classdev_register(wiphy_dev(sc->hw->wiphy), &led->cdev);
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+ if (ret < 0)
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+ return ret;
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+
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+ led->sc = sc;
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+ list_add(&led->list, &sc->leds);
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+
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+ /* Configure gpio for output */
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+ ath9k_hw_cfg_output(sc->sc_ah, gpio->gpio,
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+ AR_GPIO_OUTPUT_MUX_AS_OUTPUT);
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+
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+ /* LED off */
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+ ath9k_hw_set_gpio(sc->sc_ah, gpio->gpio, gpio->active_low);
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+
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+ return 0;
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+}
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+
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+int ath_create_gpio_led(struct ath_softc *sc, int gpio_num, const char *name,
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+ const char *trigger, bool active_low)
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+{
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+ struct ath_led *led;
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+ struct gpio_led *gpio;
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+ char *_name;
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+ int ret;
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+
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+ led = kzalloc(sizeof(*led) + sizeof(*gpio) + strlen(name) + 1,
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+ GFP_KERNEL);
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+ if (!led)
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+ return -ENOMEM;
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+
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+ led->gpio = gpio = (struct gpio_led *) (led + 1);
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+ _name = (char *) (led->gpio + 1);
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+
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+ strcpy(_name, name);
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+ gpio->name = _name;
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+ gpio->gpio = gpio_num;
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+ gpio->active_low = active_low;
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+ gpio->default_trigger = trigger;
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+
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+ ret = ath_add_led(sc, led);
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+ if (unlikely(ret < 0))
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+ kfree(led);
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+
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+ return ret;
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}
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void ath_deinit_leds(struct ath_softc *sc)
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{
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- if (!sc->led_registered)
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- return;
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+ struct ath_led *led;
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- ath_led_brightness(&sc->led_cdev, LED_OFF);
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- led_classdev_unregister(&sc->led_cdev);
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+ while (!list_empty(&sc->leds)) {
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+ led = list_first_entry(&sc->leds, struct ath_led, list);
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+ list_del(&led->list);
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+ ath_led_brightness(&led->cdev, LED_OFF);
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+ led_classdev_unregister(&led->cdev);
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+ kfree(led);
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+ }
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}
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void ath_init_leds(struct ath_softc *sc)
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{
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- int ret;
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+ char led_name[32];
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+ const char *trigger;
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+
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+ INIT_LIST_HEAD(&sc->leds);
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if (AR_SREV_9100(sc->sc_ah))
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return;
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@@ -57,26 +124,15 @@ void ath_init_leds(struct ath_softc *sc)
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sc->sc_ah->led_pin = ATH_LED_PIN_DEF;
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}
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- /* Configure gpio 1 for output */
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- ath9k_hw_cfg_output(sc->sc_ah, sc->sc_ah->led_pin,
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- AR_GPIO_OUTPUT_MUX_AS_OUTPUT);
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- /* LED off, active low */
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- ath9k_hw_set_gpio(sc->sc_ah, sc->sc_ah->led_pin, 1);
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-
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- if (!led_blink)
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- sc->led_cdev.default_trigger =
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- ieee80211_get_radio_led_name(sc->hw);
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-
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- snprintf(sc->led_name, sizeof(sc->led_name),
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- "ath9k-%s", wiphy_name(sc->hw->wiphy));
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- sc->led_cdev.name = sc->led_name;
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- sc->led_cdev.brightness_set = ath_led_brightness;
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+ snprintf(led_name, sizeof(led_name), "ath9k-%s",
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+ wiphy_name(sc->hw->wiphy));
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- ret = led_classdev_register(wiphy_dev(sc->hw->wiphy), &sc->led_cdev);
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- if (ret < 0)
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- return;
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+ if (led_blink)
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+ trigger = sc->led_default_trigger;
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+ else
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+ trigger = ieee80211_get_radio_led_name(sc->hw);
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- sc->led_registered = true;
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+ ath_create_gpio_led(sc, sc->sc_ah->led_pin, led_name, trigger, 1);
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}
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#endif
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--- a/drivers/net/wireless/ath/ath9k/init.c
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+++ b/drivers/net/wireless/ath/ath9k/init.c
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@@ -803,7 +803,7 @@ int ath9k_init_device(u16 devid, struct
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#ifdef CONFIG_MAC80211_LEDS
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/* must be initialized before ieee80211_register_hw */
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- sc->led_cdev.default_trigger = ieee80211_create_tpt_led_trigger(sc->hw,
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+ sc->led_default_trigger = ieee80211_create_tpt_led_trigger(sc->hw,
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IEEE80211_TPT_LEDTRIG_FL_RADIO, ath9k_tpt_blink,
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ARRAY_SIZE(ath9k_tpt_blink));
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#endif
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--- a/drivers/net/wireless/ath/ath9k/debug.c
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+++ b/drivers/net/wireless/ath/ath9k/debug.c
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@@ -1304,6 +1304,61 @@ static const struct file_operations fops
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.llseek = default_llseek,
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};
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+#ifdef CONFIG_MAC80211_LEDS
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+
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+static ssize_t write_file_gpio_led(struct file *file, const char __user *ubuf,
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+ size_t count, loff_t *ppos)
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+{
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+ struct ath_softc *sc = file->private_data;
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+ char buf[32], *str, *name, *c;
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+ ssize_t len;
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+ unsigned int gpio;
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+ bool active_low = false;
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+
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+ len = min(count, sizeof(buf) - 1);
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+ if (copy_from_user(buf, ubuf, len))
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+ return -EFAULT;
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+
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+ buf[len] = '\0';
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+ name = strchr(buf, ',');
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+ if (!name)
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+ return -EINVAL;
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+
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+ *(name++) = 0;
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+ if (!*name)
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+ return -EINVAL;
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+
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+ c = strchr(name, '\n');
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+ if (c)
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+ *c = 0;
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+
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+ str = buf;
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+ if (*str == '!') {
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+ str++;
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+ active_low = true;
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+ }
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+
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+ if (kstrtouint(str, 0, &gpio) < 0)
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+ return -EINVAL;
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+
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+ if (gpio >= sc->sc_ah->caps.num_gpio_pins)
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+ return -EINVAL;
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+
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+ if (ath_create_gpio_led(sc, gpio, name, NULL, active_low) < 0)
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+ return -EINVAL;
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+
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+ return count;
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+}
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+
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+static const struct file_operations fops_gpio_led = {
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+ .write = write_file_gpio_led,
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+ .open = ath9k_debugfs_open,
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+ .owner = THIS_MODULE,
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+ .llseek = default_llseek,
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+};
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+
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+#endif
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+
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void ath9k_debug_samp_bb_mac(struct ath_softc *sc)
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{
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#define ATH_SAMP_DBG(c) (sc->debug.bb_mac_samp[sc->debug.sampidx].c)
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@@ -1725,6 +1780,11 @@ int ath9k_init_debug(struct ath_hw *ah)
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debugfs_create_file("samples", S_IRUSR, sc->debug.debugfs_phy, sc,
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&fops_samps);
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+#ifdef CONFIG_MAC80211_LEDS
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+ debugfs_create_file("gpio_led", S_IWUSR,
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+ sc->debug.debugfs_phy, sc, &fops_gpio_led);
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+#endif
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+
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debugfs_create_u32("gpio_mask", S_IRUSR | S_IWUSR,
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sc->debug.debugfs_phy, &sc->sc_ah->gpio_mask);
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68
package/mac80211/patches/581-ath9k_extra_platform_leds.patch
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68
package/mac80211/patches/581-ath9k_extra_platform_leds.patch
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@ -0,0 +1,68 @@
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--- a/include/linux/ath9k_platform.h
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+++ b/include/linux/ath9k_platform.h
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@@ -32,6 +32,9 @@ struct ath9k_platform_data {
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bool is_clk_25mhz;
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int (*get_mac_revision)(void);
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int (*external_reset)(void);
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+
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+ int num_leds;
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+ const struct gpio_led *leds;
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};
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#endif /* _LINUX_ATH9K_PLATFORM_H */
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--- a/drivers/net/wireless/ath/ath9k/gpio.c
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+++ b/drivers/net/wireless/ath/ath9k/gpio.c
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@@ -14,6 +14,7 @@
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* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*/
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+#include <linux/ath9k_platform.h>
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#include "ath9k.h"
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/********************************/
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@@ -88,6 +89,24 @@ int ath_create_gpio_led(struct ath_softc
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return ret;
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}
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+static int ath_create_platform_led(struct ath_softc *sc,
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+ const struct gpio_led *gpio)
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+{
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+ struct ath_led *led;
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+ int ret;
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+
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+ led = kzalloc(sizeof(*led), GFP_KERNEL);
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+ if (!led)
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+ return -ENOMEM;
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+
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+ led->gpio = gpio;
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+ ret = ath_add_led(sc, led);
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+ if (ret < 0)
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+ kfree(led);
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+
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+ return ret;
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+}
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+
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void ath_deinit_leds(struct ath_softc *sc)
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{
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struct ath_led *led;
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@@ -103,8 +122,10 @@ void ath_deinit_leds(struct ath_softc *s
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void ath_init_leds(struct ath_softc *sc)
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{
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+ struct ath9k_platform_data *pdata = sc->dev->platform_data;
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char led_name[32];
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const char *trigger;
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+ int i;
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INIT_LIST_HEAD(&sc->leds);
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@@ -133,6 +154,9 @@ void ath_init_leds(struct ath_softc *sc)
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trigger = ieee80211_get_radio_led_name(sc->hw);
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ath_create_gpio_led(sc, sc->sc_ah->led_pin, led_name, trigger, 1);
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+
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+ for (i = 0; i < pdata->num_leds; i++)
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+ ath_create_platform_led(sc, &pdata->leds[i]);
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}
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#endif
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@ -32,6 +32,9 @@ struct ath9k_platform_data {
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bool is_clk_25mhz;
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int (*get_mac_revision)(void);
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int (*external_reset)(void);
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int num_leds;
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const struct gpio_led *leds;
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};
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#endif /* _LINUX_ATH9K_PLATFORM_H */
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