drivers/net/wireless/ath/ath5k/led.c - linux - Git at Google

 /*
  * 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.
  *
  */

 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt

 #include <linux/pci.h>
 #include "ath5k.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[] = {
 	/* 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 Aspire One AO531h AO751h (keng-yu.lin@canonical.com) */
 	{ ATH_SDEVICE(PCI_VENDOR_ID_FOXCONN, 0xe00d), 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) },
 	/* BenQ Joybook R55v (nowymarluk@wp.pl) */
 	{ ATH_SDEVICE(PCI_VENDOR_ID_QMI, 0x0100), ATH_LED(1, 0) },
 	/* Acer Extensa 5620z (nekoreeve@gmail.com) */
 	{ ATH_SDEVICE(PCI_VENDOR_ID_QMI, 0x0105), ATH_LED(3, 0) },
 	/* Fukato Datacask Jupiter 1014a (mrb74@gmx.at) */
 	{ ATH_SDEVICE(PCI_VENDOR_ID_AZWAVE, 0x1026), ATH_LED(3, 0) },
 	/* IBM ThinkPad AR5BXB6 (legovini@spiro.fisica.unipd.it) */
 	{ ATH_SDEVICE(PCI_VENDOR_ID_IBM, 0x058a), ATH_LED(1, 0) },
 	/* HP Compaq CQ60-206US (ddreggors@jumptv.com) */
 	{ ATH_SDEVICE(PCI_VENDOR_ID_HP, 0x0137a), ATH_LED(3, 1) },
 	/* HP Compaq C700 (nitrousnrg@gmail.com) */
 	{ ATH_SDEVICE(PCI_VENDOR_ID_HP, 0x0137b), ATH_LED(3, 1) },
 	/* LiteOn AR5BXB63 (magooz@salug.it) */
 	{ ATH_SDEVICE(PCI_VENDOR_ID_ATHEROS, 0x3067), ATH_LED(3, 0) },
 	/* IBM-specific AR5212 (all others) */
 	{ PCI_VDEVICE(ATHEROS, PCI_DEVICE_ID_ATHEROS_AR5212_IBM), ATH_LED(0, 0) },
 	/* Dell Vostro A860 (shahar@shahar-or.co.il) */
 	{ ATH_SDEVICE(PCI_VENDOR_ID_QMI, 0x0112), ATH_LED(3, 0) },
 	{ }
 };

 void ath5k_led_enable(struct ath5k_hw *ah)
 {
 	if (test_bit(ATH_STAT_LEDSOFT, ah->status)) {
 		ath5k_hw_set_gpio_output(ah, ah->led_pin);
 		ath5k_led_off(ah);
 	}
 }

 static void ath5k_led_on(struct ath5k_hw *ah)
 {
 	if (!test_bit(ATH_STAT_LEDSOFT, ah->status))
 		return;
 	ath5k_hw_set_gpio(ah, ah->led_pin, ah->led_on);
 }

 void ath5k_led_off(struct ath5k_hw *ah)
 {
 	if (!test_bit(ATH_STAT_LEDSOFT, ah->status))
 		return;
 	ath5k_hw_set_gpio(ah, ah->led_pin, !ah->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->ah);
 	else
 		ath5k_led_on(led->ah);
 }

 static int
 ath5k_register_led(struct ath5k_hw *ah, struct ath5k_led *led,
 		   const char *name, char *trigger)
 {
 	int err;

 	led->ah = ah;
 	strncpy(led->name, name, sizeof(led->name));
 	led->name[sizeof(led->name)-1] = 0;
 	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(ah->dev, &led->led_dev);
 	if (err) {
 		ATH5K_WARN(ah, "could not register LED %s\n", name);
 		led->ah = NULL;
 	}
 	return err;
 }

 static void
 ath5k_unregister_led(struct ath5k_led *led)
 {
 	if (!led->ah)
 		return;
 	led_classdev_unregister(&led->led_dev);
 	ath5k_led_off(led->ah);
 	led->ah = NULL;
 }

 void ath5k_unregister_leds(struct ath5k_hw *ah)
 {
 	ath5k_unregister_led(&ah->rx_led);
 	ath5k_unregister_led(&ah->tx_led);
 }

 int ath5k_init_leds(struct ath5k_hw *ah)
 {
 	int ret = 0;
 	struct ieee80211_hw *hw = ah->hw;
 	struct pci_dev *pdev = ah->pdev;
 	char name[ATH5K_LED_MAX_NAME_LEN + 1];
 	const struct pci_device_id *match;

 	if (!ah->pdev)
 		return 0;

 	match = pci_match_id(&ath5k_led_devices[0], pdev);
 	if (match) {
 		__set_bit(ATH_STAT_LEDSOFT, ah->status);
 		ah->led_pin = ATH_PIN(match->driver_data);
 		ah->led_on = ATH_POLARITY(match->driver_data);
 	}

 	if (!test_bit(ATH_STAT_LEDSOFT, ah->status))
 		goto out;

 	ath5k_led_enable(ah);

 	snprintf(name, sizeof(name), "ath5k-%s::rx", wiphy_name(hw->wiphy));
 	ret = ath5k_register_led(ah, &ah->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(ah, &ah->tx_led, name,
 		ieee80211_get_tx_led_name(hw));
 out:
 	return ret;
 }
	/*
	* 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.
	*
	*/

	#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt

	#include <linux/pci.h>
	#include "ath5k.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[] = {
	/* 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 Aspire One AO531h AO751h (keng-yu.lin@canonical.com) */
	{ ATH_SDEVICE(PCI_VENDOR_ID_FOXCONN, 0xe00d), 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) },
	/* BenQ Joybook R55v (nowymarluk@wp.pl) */
	{ ATH_SDEVICE(PCI_VENDOR_ID_QMI, 0x0100), ATH_LED(1, 0) },
	/* Acer Extensa 5620z (nekoreeve@gmail.com) */
	{ ATH_SDEVICE(PCI_VENDOR_ID_QMI, 0x0105), ATH_LED(3, 0) },
	/* Fukato Datacask Jupiter 1014a (mrb74@gmx.at) */
	{ ATH_SDEVICE(PCI_VENDOR_ID_AZWAVE, 0x1026), ATH_LED(3, 0) },
	/* IBM ThinkPad AR5BXB6 (legovini@spiro.fisica.unipd.it) */
	{ ATH_SDEVICE(PCI_VENDOR_ID_IBM, 0x058a), ATH_LED(1, 0) },
	/* HP Compaq CQ60-206US (ddreggors@jumptv.com) */
	{ ATH_SDEVICE(PCI_VENDOR_ID_HP, 0x0137a), ATH_LED(3, 1) },
	/* HP Compaq C700 (nitrousnrg@gmail.com) */
	{ ATH_SDEVICE(PCI_VENDOR_ID_HP, 0x0137b), ATH_LED(3, 1) },
	/* LiteOn AR5BXB63 (magooz@salug.it) */
	{ ATH_SDEVICE(PCI_VENDOR_ID_ATHEROS, 0x3067), ATH_LED(3, 0) },
	/* IBM-specific AR5212 (all others) */
	{ PCI_VDEVICE(ATHEROS, PCI_DEVICE_ID_ATHEROS_AR5212_IBM), ATH_LED(0, 0) },
	/* Dell Vostro A860 (shahar@shahar-or.co.il) */
	{ ATH_SDEVICE(PCI_VENDOR_ID_QMI, 0x0112), ATH_LED(3, 0) },
	{ }
	};

	void ath5k_led_enable(struct ath5k_hw *ah)
	{
	if (test_bit(ATH_STAT_LEDSOFT, ah->status)) {
	ath5k_hw_set_gpio_output(ah, ah->led_pin);
	ath5k_led_off(ah);
	}
	}

	static void ath5k_led_on(struct ath5k_hw *ah)
	{
	if (!test_bit(ATH_STAT_LEDSOFT, ah->status))
	return;
	ath5k_hw_set_gpio(ah, ah->led_pin, ah->led_on);
	}

	void ath5k_led_off(struct ath5k_hw *ah)
	{
	if (!test_bit(ATH_STAT_LEDSOFT, ah->status))
	return;
	ath5k_hw_set_gpio(ah, ah->led_pin, !ah->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->ah);
	else
	ath5k_led_on(led->ah);
	}

	static int
	ath5k_register_led(struct ath5k_hw ah, struct ath5k_led led,
	const char name, char trigger)
	{
	int err;

	led->ah = ah;
	strncpy(led->name, name, sizeof(led->name));
	led->name[sizeof(led->name)-1] = 0;
	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(ah->dev, &led->led_dev);
	if (err) {
	ATH5K_WARN(ah, "could not register LED %s\n", name);
	led->ah = NULL;
	}
	return err;
	}

	static void
	ath5k_unregister_led(struct ath5k_led *led)
	{
	if (!led->ah)
	return;
	led_classdev_unregister(&led->led_dev);
	ath5k_led_off(led->ah);
	led->ah = NULL;
	}

	void ath5k_unregister_leds(struct ath5k_hw *ah)
	{
	ath5k_unregister_led(&ah->rx_led);
	ath5k_unregister_led(&ah->tx_led);
	}

	int ath5k_init_leds(struct ath5k_hw *ah)
	{
	int ret = 0;
	struct ieee80211_hw *hw = ah->hw;
	struct pci_dev *pdev = ah->pdev;
	char name[ATH5K_LED_MAX_NAME_LEN + 1];
	const struct pci_device_id *match;

	if (!ah->pdev)
	return 0;

	match = pci_match_id(&ath5k_led_devices[0], pdev);
	if (match) {
	__set_bit(ATH_STAT_LEDSOFT, ah->status);
	ah->led_pin = ATH_PIN(match->driver_data);
	ah->led_on = ATH_POLARITY(match->driver_data);
	}

	if (!test_bit(ATH_STAT_LEDSOFT, ah->status))
	goto out;

	ath5k_led_enable(ah);

	snprintf(name, sizeof(name), "ath5k-%s::rx", wiphy_name(hw->wiphy));
	ret = ath5k_register_led(ah, &ah->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(ah, &ah->tx_led, name,
	ieee80211_get_tx_led_name(hw));
	out:
	return ret;
	}