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path: root/drivers/net/wireless/ath5k/led.c
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Diffstat (limited to 'drivers/net/wireless/ath5k/led.c')
-rw-r--r--drivers/net/wireless/ath5k/led.c176
1 files changed, 176 insertions, 0 deletions
diff --git a/drivers/net/wireless/ath5k/led.c b/drivers/net/wireless/ath5k/led.c
new file mode 100644
index 000000000000..19555fb79c9b
--- /dev/null
+++ b/drivers/net/wireless/ath5k/led.c
@@ -0,0 +1,176 @@
+/*
+ * Copyright (c) 2002-2005 Sam Leffler, Errno Consulting
+ * Copyright (c) 2004-2005 Atheros Communications, Inc.
+ * Copyright (c) 2007 Jiri Slaby <jirislaby@gmail.com>
+ * Copyright (c) 2009 Bob Copeland <me@bobcopeland.com>
+ *
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer,
+ * without modification.
+ * 2. Redistributions in binary form must reproduce at minimum a disclaimer
+ * similar to the "NO WARRANTY" disclaimer below ("Disclaimer") and any
+ * redistribution must be conditioned upon including a substantially
+ * similar Disclaimer requirement for further binary redistribution.
+ * 3. Neither the names of the above-listed copyright holders nor the names
+ * of any contributors may be used to endorse or promote products derived
+ * from this software without specific prior written permission.
+ *
+ * Alternatively, this software may be distributed under the terms of the
+ * GNU General Public License ("GPL") version 2 as published by the Free
+ * Software Foundation.
+ *
+ * NO WARRANTY
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF NONINFRINGEMENT, MERCHANTIBILITY
+ * AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
+ * THE COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY,
+ * OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER
+ * IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
+ * THE POSSIBILITY OF SUCH DAMAGES.
+ *
+ */
+
+#include <linux/pci.h>
+#include "ath5k.h"
+#include "base.h"
+
+#define ATH_SDEVICE(subv,subd) \
+ .vendor = PCI_ANY_ID, .device = PCI_ANY_ID, \
+ .subvendor = (subv), .subdevice = (subd)
+
+#define ATH_LED(pin,polarity) .driver_data = (((pin) << 8) | (polarity))
+#define ATH_PIN(data) ((data) >> 8)
+#define ATH_POLARITY(data) ((data) & 0xff)
+
+/* Devices we match on for LED config info (typically laptops) */
+static const struct pci_device_id ath5k_led_devices[] = {
+ /* IBM-specific AR5212 */
+ { PCI_VDEVICE(ATHEROS, PCI_DEVICE_ID_ATHEROS_AR5212_IBM), ATH_LED(0, 0) },
+ /* AR5211 */
+ { PCI_VDEVICE(ATHEROS, PCI_DEVICE_ID_ATHEROS_AR5211), ATH_LED(0, 0) },
+ /* HP Compaq nc6xx, nc4000, nx6000 */
+ { ATH_SDEVICE(PCI_VENDOR_ID_COMPAQ, PCI_ANY_ID), ATH_LED(1, 1) },
+ /* Acer Aspire One A150 (maximlevitsky@gmail.com) */
+ { ATH_SDEVICE(PCI_VENDOR_ID_FOXCONN, 0xe008), ATH_LED(3, 0) },
+ /* Acer Ferrari 5000 (russ.dill@gmail.com) */
+ { ATH_SDEVICE(PCI_VENDOR_ID_AMBIT, 0x0422), ATH_LED(1, 1) },
+ /* E-machines E510 (tuliom@gmail.com) */
+ { ATH_SDEVICE(PCI_VENDOR_ID_AMBIT, 0x0428), ATH_LED(3, 0) },
+ /* Acer Extensa 5620z (nekoreeve@gmail.com) */
+ { ATH_SDEVICE(PCI_VENDOR_ID_QMI, 0x0105), ATH_LED(3, 0) },
+ { }
+};
+
+void ath5k_led_enable(struct ath5k_softc *sc)
+{
+ if (test_bit(ATH_STAT_LEDSOFT, sc->status)) {
+ ath5k_hw_set_gpio_output(sc->ah, sc->led_pin);
+ ath5k_led_off(sc);
+ }
+}
+
+void ath5k_led_on(struct ath5k_softc *sc)
+{
+ if (!test_bit(ATH_STAT_LEDSOFT, sc->status))
+ return;
+ ath5k_hw_set_gpio(sc->ah, sc->led_pin, sc->led_on);
+}
+
+void ath5k_led_off(struct ath5k_softc *sc)
+{
+ if (!test_bit(ATH_STAT_LEDSOFT, sc->status))
+ return;
+ ath5k_hw_set_gpio(sc->ah, sc->led_pin, !sc->led_on);
+}
+
+static void
+ath5k_led_brightness_set(struct led_classdev *led_dev,
+ enum led_brightness brightness)
+{
+ struct ath5k_led *led = container_of(led_dev, struct ath5k_led,
+ led_dev);
+
+ if (brightness == LED_OFF)
+ ath5k_led_off(led->sc);
+ else
+ ath5k_led_on(led->sc);
+}
+
+static int
+ath5k_register_led(struct ath5k_softc *sc, struct ath5k_led *led,
+ const char *name, char *trigger)
+{
+ int err;
+
+ led->sc = sc;
+ strncpy(led->name, name, sizeof(led->name));
+ led->led_dev.name = led->name;
+ led->led_dev.default_trigger = trigger;
+ led->led_dev.brightness_set = ath5k_led_brightness_set;
+
+ err = led_classdev_register(&sc->pdev->dev, &led->led_dev);
+ if (err) {
+ ATH5K_WARN(sc, "could not register LED %s\n", name);
+ led->sc = NULL;
+ }
+ return err;
+}
+
+static void
+ath5k_unregister_led(struct ath5k_led *led)
+{
+ if (!led->sc)
+ return;
+ led_classdev_unregister(&led->led_dev);
+ ath5k_led_off(led->sc);
+ led->sc = NULL;
+}
+
+void ath5k_unregister_leds(struct ath5k_softc *sc)
+{
+ ath5k_unregister_led(&sc->rx_led);
+ ath5k_unregister_led(&sc->tx_led);
+}
+
+int ath5k_init_leds(struct ath5k_softc *sc)
+{
+ int ret = 0;
+ struct ieee80211_hw *hw = sc->hw;
+ struct pci_dev *pdev = sc->pdev;
+ char name[ATH5K_LED_MAX_NAME_LEN + 1];
+ const struct pci_device_id *match;
+
+ match = pci_match_id(&ath5k_led_devices[0], pdev);
+ if (match) {
+ __set_bit(ATH_STAT_LEDSOFT, sc->status);
+ sc->led_pin = ATH_PIN(match->driver_data);
+ sc->led_on = ATH_POLARITY(match->driver_data);
+ }
+
+ if (!test_bit(ATH_STAT_LEDSOFT, sc->status))
+ goto out;
+
+ ath5k_led_enable(sc);
+
+ snprintf(name, sizeof(name), "ath5k-%s::rx", wiphy_name(hw->wiphy));
+ ret = ath5k_register_led(sc, &sc->rx_led, name,
+ ieee80211_get_rx_led_name(hw));
+ if (ret)
+ goto out;
+
+ snprintf(name, sizeof(name), "ath5k-%s::tx", wiphy_name(hw->wiphy));
+ ret = ath5k_register_led(sc, &sc->tx_led, name,
+ ieee80211_get_tx_led_name(hw));
+out:
+ return ret;
+}
+