summaryrefslogtreecommitdiffstats
path: root/kernel/drivers/net/wireless/ath/ath5k/led.c
blob: 803030fd17d3b9203dd74535da40fe1de08284d6 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
/*
 * 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, const 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;
#ifndef CONFIG_ATH5K_AHB
	struct pci_dev *pdev = ah->pdev;
#endif
	char name[ATH5K_LED_MAX_NAME_LEN + 1];
	const struct pci_device_id *match;

	if (!ah->pdev)
		return 0;

#ifdef CONFIG_ATH5K_AHB
	match = NULL;
#else
	match = pci_match_id(&ath5k_led_devices[0], pdev);
#endif
	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;
}