ath9k: Add LED support
Signed-off-by: Vasanthakumar Thiagarajan <vasanth@atheros.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
diff --git a/drivers/net/wireless/ath9k/main.c b/drivers/net/wireless/ath9k/main.c
index dca00c3..996bb9c 100644
--- a/drivers/net/wireless/ath9k/main.c
+++ b/drivers/net/wireless/ath9k/main.c
@@ -1172,12 +1172,130 @@
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 @@
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 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_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 @@
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;
}