1 files changed, 135 insertions, 3 deletions

diff --git a/drivers/net/wireless/ath9k/main.c b/drivers/net/wireless/ath9k/main.c
index dca00c3a985..996bb9c6540 100644
--- a/drivers/net/wireless/ath9k/main.c
+++ b/drivers/net/wireless/ath9k/main.c
@@ -1172,12 +1172,130 @@ enum ath9k_ht_macmode ath_cwm_macmode(struct ath_softc *sc)
 	return sc->sc_ht_info.tx_chan_width;
 }
 
+/********************************/
+/*	 LED functions		*/
+/********************************/
+
+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, led_cdev);
+	struct ath_softc *sc = led->sc;
+
+	switch (brightness) {
+	case LED_OFF:
+		if (led->led_type == ATH_LED_ASSOC ||
+		    led->led_type == ATH_LED_RADIO)
+			sc->sc_flags &= ~SC_OP_LED_ASSOCIATED;
+		ath9k_hw_set_gpio(sc->sc_ah, ATH_LED_PIN,
+				(led->led_type == ATH_LED_RADIO) ? 1 :
+				!!(sc->sc_flags & SC_OP_LED_ASSOCIATED));
+		break;
+	case LED_FULL:
+		if (led->led_type == ATH_LED_ASSOC)
+			sc->sc_flags |= SC_OP_LED_ASSOCIATED;
+		ath9k_hw_set_gpio(sc->sc_ah, ATH_LED_PIN, 0);
+		break;
+	default:
+		break;
+	}
+}
+
+static int ath_register_led(struct ath_softc *sc, struct ath_led *led,
+			    char *trigger)
+{
+	int ret;
+
+	led->sc = sc;
+	led->led_cdev.name = led->name;
+	led->led_cdev.default_trigger = trigger;
+	led->led_cdev.brightness_set = ath_led_brightness;
+
+	ret = led_classdev_register(wiphy_dev(sc->hw->wiphy), &led->led_cdev);
+	if (ret)
+		DPRINTF(sc, ATH_DBG_FATAL,
+			"Failed to register led:%s", led->name);
+	else
+		led->registered = 1;
+	return ret;
+}
+
+static void ath_unregister_led(struct ath_led *led)
+{
+	if (led->registered) {
+		led_classdev_unregister(&led->led_cdev);
+		led->registered = 0;
+	}
+}
+
+static void ath_deinit_leds(struct ath_softc *sc)
+{
+	ath_unregister_led(&sc->assoc_led);
+	sc->sc_flags &= ~SC_OP_LED_ASSOCIATED;
+	ath_unregister_led(&sc->tx_led);
+	ath_unregister_led(&sc->rx_led);
+	ath_unregister_led(&sc->radio_led);
+	ath9k_hw_set_gpio(sc->sc_ah, ATH_LED_PIN, 1);
+}
+
+static void ath_init_leds(struct ath_softc *sc)
+{
+	char *trigger;
+	int ret;
+
+	/* Configure gpio 1 for output */
+	ath9k_hw_cfg_output(sc->sc_ah, ATH_LED_PIN,
+			    AR_GPIO_OUTPUT_MUX_AS_OUTPUT);
+	/* LED off, active low */
+	ath9k_hw_set_gpio(sc->sc_ah, ATH_LED_PIN, 1);
+
+	trigger = ieee80211_get_radio_led_name(sc->hw);
+	snprintf(sc->radio_led.name, sizeof(sc->radio_led.name),
+		"ath9k-%s:radio", wiphy_name(sc->hw->wiphy));
+	ret = ath_register_led(sc, &sc->radio_led, trigger);
+	sc->radio_led.led_type = ATH_LED_RADIO;
+	if (ret)
+		goto fail;
+
+	trigger = ieee80211_get_assoc_led_name(sc->hw);
+	snprintf(sc->assoc_led.name, sizeof(sc->assoc_led.name),
+		"ath9k-%s:assoc", wiphy_name(sc->hw->wiphy));
+	ret = ath_register_led(sc, &sc->assoc_led, trigger);
+	sc->assoc_led.led_type = ATH_LED_ASSOC;
+	if (ret)
+		goto fail;
+
+	trigger = ieee80211_get_tx_led_name(sc->hw);
+	snprintf(sc->tx_led.name, sizeof(sc->tx_led.name),
+		"ath9k-%s:tx", wiphy_name(sc->hw->wiphy));
+	ret = ath_register_led(sc, &sc->tx_led, trigger);
+	sc->tx_led.led_type = ATH_LED_TX;
+	if (ret)
+		goto fail;
+
+	trigger = ieee80211_get_rx_led_name(sc->hw);
+	snprintf(sc->rx_led.name, sizeof(sc->rx_led.name),
+		"ath9k-%s:rx", wiphy_name(sc->hw->wiphy));
+	ret = ath_register_led(sc, &sc->rx_led, trigger);
+	sc->rx_led.led_type = ATH_LED_RX;
+	if (ret)
+		goto fail;
+
+	return;
+
+fail:
+	ath_deinit_leds(sc);
+}
+
 static int ath_detach(struct ath_softc *sc)
 {
 	struct ieee80211_hw *hw = sc->hw;
 
 	DPRINTF(sc, ATH_DBG_CONFIG, "%s: Detach ATH hw\n", __func__);
 
+	/* Deinit LED control */
+	ath_deinit_leds(sc);
+
 	/* Unregister hw */
 
 	ieee80211_unregister_hw(hw);
@@ -1271,18 +1389,21 @@ static int ath_attach(u16 devid,
 		goto bad;
 	}
 
+	/* Initialize LED control */
+	ath_init_leds(sc);
+
 	/* initialize tx/rx engine */
 
 	error = ath_tx_init(sc, ATH_TXBUF);
 	if (error != 0)
-		goto bad1;
+		goto detach;
 
 	error = ath_rx_init(sc, ATH_RXBUF);
 	if (error != 0)
-		goto bad1;
+		goto detach;
 
 	return 0;
-bad1:
+detach:
 	ath_detach(sc);
 bad:
 	return error;
@@ -1427,6 +1548,10 @@ static void ath_pci_remove(struct pci_dev *pdev)
 
 static int ath_pci_suspend(struct pci_dev *pdev, pm_message_t state)
 {
+	struct ieee80211_hw *hw = pci_get_drvdata(pdev);
+	struct ath_softc *sc = hw->priv;
+
+	ath9k_hw_set_gpio(sc->sc_ah, ATH_LED_PIN, 1);
 	pci_save_state(pdev);
 	pci_disable_device(pdev);
 	pci_set_power_state(pdev, 3);
@@ -1436,6 +1561,8 @@ static int ath_pci_suspend(struct pci_dev *pdev, pm_message_t state)
 
 static int ath_pci_resume(struct pci_dev *pdev)
 {
+	struct ieee80211_hw *hw = pci_get_drvdata(pdev);
+	struct ath_softc *sc = hw->priv;
 	u32 val;
 	int err;
 
@@ -1452,6 +1579,11 @@ static int ath_pci_resume(struct pci_dev *pdev)
 	if ((val & 0x0000ff00) != 0)
 		pci_write_config_dword(pdev, 0x40, val & 0xffff00ff);
 
+	/* Enable LED */
+	ath9k_hw_cfg_output(sc->sc_ah, ATH_LED_PIN,
+			    AR_GPIO_OUTPUT_MUX_AS_OUTPUT);
+	ath9k_hw_set_gpio(sc->sc_ah, ATH_LED_PIN, 1);
+
 	return 0;
 }