drivers/net/wireless/ath/ath5k/led.c

   1 /*
   2  * Copyright (c) 2002-2005 Sam Leffler, Errno Consulting
   3  * Copyright (c) 2004-2005 Atheros Communications, Inc.
   4  * Copyright (c) 2007 Jiri Slaby <jirislaby@gmail.com>
   5  * Copyright (c) 2009 Bob Copeland <me@bobcopeland.com>
   6  *
   7  * All rights reserved.
   8  *
   9  * Redistribution and use in source and binary forms, with or without
  10  * modification, are permitted provided that the following conditions
  11  * are met:
  12  * 1. Redistributions of source code must retain the above copyright
  13  *    notice, this list of conditions and the following disclaimer,
  14  *    without modification.
  15  * 2. Redistributions in binary form must reproduce at minimum a disclaimer
  16  *    similar to the "NO WARRANTY" disclaimer below ("Disclaimer") and any
  17  *    redistribution must be conditioned upon including a substantially
  18  *    similar Disclaimer requirement for further binary redistribution.
  19  * 3. Neither the names of the above-listed copyright holders nor the names
  20  *    of any contributors may be used to endorse or promote products derived
  21  *    from this software without specific prior written permission.
  22  *
  23  * Alternatively, this software may be distributed under the terms of the
  24  * GNU General Public License ("GPL") version 2 as published by the Free
  25  * Software Foundation.
  26  *
  27  * NO WARRANTY
  28  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  29  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  30  * LIMITED TO, THE IMPLIED WARRANTIES OF NONINFRINGEMENT, MERCHANTIBILITY
  31  * AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
  32  * THE COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY,
  33  * OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
  34  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  35  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER
  36  * IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  37  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
  38  * THE POSSIBILITY OF SUCH DAMAGES.
  39  *
  40  */
  41
  42 #include <linux/pci.h>
  43 #include "ath5k.h"
  44
  45 #define ATH_SDEVICE(subv, subd) \
  46         .vendor = PCI_ANY_ID, .device = PCI_ANY_ID, \
  47         .subvendor = (subv), .subdevice = (subd)
  48
  49 #define ATH_LED(pin, polarity) .driver_data = (((pin) << 8) | (polarity))
  50 #define ATH_PIN(data) ((data) >> 8)
  51 #define ATH_POLARITY(data) ((data) & 0xff)
  52
  53 /* Devices we match on for LED config info (typically laptops) */
  54 static DEFINE_PCI_DEVICE_TABLE(ath5k_led_devices) = {
  55         /* AR5211 */
  56         { PCI_VDEVICE(ATHEROS, PCI_DEVICE_ID_ATHEROS_AR5211), ATH_LED(0, 0) },
  57         /* HP Compaq nc6xx, nc4000, nx6000 */
  58         { ATH_SDEVICE(PCI_VENDOR_ID_COMPAQ, PCI_ANY_ID), ATH_LED(1, 1) },
  59         /* Acer Aspire One A150 (maximlevitsky@gmail.com) */
  60         { ATH_SDEVICE(PCI_VENDOR_ID_FOXCONN, 0xe008), ATH_LED(3, 0) },
  61         /* Acer Aspire One AO531h AO751h (keng-yu.lin@canonical.com) */
  62         { ATH_SDEVICE(PCI_VENDOR_ID_FOXCONN, 0xe00d), ATH_LED(3, 0) },
  63         /* Acer Ferrari 5000 (russ.dill@gmail.com) */
  64         { ATH_SDEVICE(PCI_VENDOR_ID_AMBIT, 0x0422), ATH_LED(1, 1) },
  65         /* E-machines E510 (tuliom@gmail.com) */
  66         { ATH_SDEVICE(PCI_VENDOR_ID_AMBIT, 0x0428), ATH_LED(3, 0) },
  67         /* BenQ Joybook R55v (nowymarluk@wp.pl) */
  68         { ATH_SDEVICE(PCI_VENDOR_ID_QMI, 0x0100), ATH_LED(1, 0) },
  69         /* Acer Extensa 5620z (nekoreeve@gmail.com) */
  70         { ATH_SDEVICE(PCI_VENDOR_ID_QMI, 0x0105), ATH_LED(3, 0) },
  71         /* Fukato Datacask Jupiter 1014a (mrb74@gmx.at) */
  72         { ATH_SDEVICE(PCI_VENDOR_ID_AZWAVE, 0x1026), ATH_LED(3, 0) },
  73         /* IBM ThinkPad AR5BXB6 (legovini@spiro.fisica.unipd.it) */
  74         { ATH_SDEVICE(PCI_VENDOR_ID_IBM, 0x058a), ATH_LED(1, 0) },
  75         /* HP Compaq CQ60-206US (ddreggors@jumptv.com) */
  76         { ATH_SDEVICE(PCI_VENDOR_ID_HP, 0x0137a), ATH_LED(3, 1) },
  77         /* HP Compaq C700 (nitrousnrg@gmail.com) */
  78         { ATH_SDEVICE(PCI_VENDOR_ID_HP, 0x0137b), ATH_LED(3, 1) },
  79         /* LiteOn AR5BXB63 (magooz@salug.it) */
  80         { ATH_SDEVICE(PCI_VENDOR_ID_ATHEROS, 0x3067), ATH_LED(3, 0) },
  81         /* IBM-specific AR5212 (all others) */
  82         { PCI_VDEVICE(ATHEROS, PCI_DEVICE_ID_ATHEROS_AR5212_IBM), ATH_LED(0, 0) },
  83         /* Dell Vostro A860 (shahar@shahar-or.co.il) */
  84         { ATH_SDEVICE(PCI_VENDOR_ID_QMI, 0x0112), ATH_LED(3, 0) },
  85         { }
  86 };
  87
  88 void ath5k_led_enable(struct ath5k_hw *ah)
  89 {
  90         if (test_bit(ATH_STAT_LEDSOFT, ah->status)) {
  91                 ath5k_hw_set_gpio_output(ah, ah->led_pin);
  92                 ath5k_led_off(ah);
  93         }
  94 }
  95
  96 static void ath5k_led_on(struct ath5k_hw *ah)
  97 {
  98         if (!test_bit(ATH_STAT_LEDSOFT, ah->status))
  99                 return;
 100         ath5k_hw_set_gpio(ah, ah->led_pin, ah->led_on);
 101 }
 102
 103 void ath5k_led_off(struct ath5k_hw *ah)
 104 {
 105         if (!test_bit(ATH_STAT_LEDSOFT, ah->status))
 106                 return;
 107         ath5k_hw_set_gpio(ah, ah->led_pin, !ah->led_on);
 108 }
 109
 110 static void
 111 ath5k_led_brightness_set(struct led_classdev *led_dev,
 112         enum led_brightness brightness)
 113 {
 114         struct ath5k_led *led = container_of(led_dev, struct ath5k_led,
 115                 led_dev);
 116
 117         if (brightness == LED_OFF)
 118                 ath5k_led_off(led->ah);
 119         else
 120                 ath5k_led_on(led->ah);
 121 }
 122
 123 static int
 124 ath5k_register_led(struct ath5k_hw *ah, struct ath5k_led *led,
 125                    const char *name, char *trigger)
 126 {
 127         int err;
 128
 129         led->ah = ah;
 130         strncpy(led->name, name, sizeof(led->name));
 131         led->led_dev.name = led->name;
 132         led->led_dev.default_trigger = trigger;
 133         led->led_dev.brightness_set = ath5k_led_brightness_set;
 134
 135         err = led_classdev_register(ah->dev, &led->led_dev);
 136         if (err) {
 137                 ATH5K_WARN(ah, "could not register LED %s\n", name);
 138                 led->ah = NULL;
 139         }
 140         return err;
 141 }
 142
 143 static void
 144 ath5k_unregister_led(struct ath5k_led *led)
 145 {
 146         if (!led->ah)
 147                 return;
 148         led_classdev_unregister(&led->led_dev);
 149         ath5k_led_off(led->ah);
 150         led->ah = NULL;
 151 }
 152
 153 void ath5k_unregister_leds(struct ath5k_hw *ah)
 154 {
 155         ath5k_unregister_led(&ah->rx_led);
 156         ath5k_unregister_led(&ah->tx_led);
 157 }
 158
 159 int __devinit ath5k_init_leds(struct ath5k_hw *ah)
 160 {
 161         int ret = 0;
 162         struct ieee80211_hw *hw = ah->hw;
 163 #ifndef CONFIG_ATHEROS_AR231X
 164         struct pci_dev *pdev = ah->pdev;
 165 #endif
 166         char name[ATH5K_LED_MAX_NAME_LEN + 1];
 167         const struct pci_device_id *match;
 168
 169         if (!ah->pdev)
 170                 return 0;
 171
 172 #ifdef CONFIG_ATHEROS_AR231X
 173         match = NULL;
 174 #else
 175         match = pci_match_id(&ath5k_led_devices[0], pdev);
 176 #endif
 177         if (match) {
 178                 __set_bit(ATH_STAT_LEDSOFT, ah->status);
 179                 ah->led_pin = ATH_PIN(match->driver_data);
 180                 ah->led_on = ATH_POLARITY(match->driver_data);
 181         }
 182
 183         if (!test_bit(ATH_STAT_LEDSOFT, ah->status))
 184                 goto out;
 185
 186         ath5k_led_enable(ah);
 187
 188         snprintf(name, sizeof(name), "ath5k-%s::rx", wiphy_name(hw->wiphy));
 189         ret = ath5k_register_led(ah, &ah->rx_led, name,
 190                 ieee80211_get_rx_led_name(hw));
 191         if (ret)
 192                 goto out;
 193
 194         snprintf(name, sizeof(name), "ath5k-%s::tx", wiphy_name(hw->wiphy));
 195         ret = ath5k_register_led(ah, &ah->tx_led, name,
 196                 ieee80211_get_tx_led_name(hw));
 197 out:
 198         return ret;
 199 }
 200