2 * Atheros CARL9170 driver
6 * Copyright 2008, Johannes Berg <johannes@sipsolutions.net>
7 * Copyright 2009, 2010, Christian Lamparer <chunkeey@googlemail.com>
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License as published by
11 * the Free Software Foundation; either version 2 of the License, or
12 * (at your option) any later version.
14 * This program is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 * GNU General Public License for more details.
19 * You should have received a copy of the GNU General Public License
20 * along with this program; see the file COPYING. If not, see
21 * http://www.gnu.org/licenses/.
23 * This file incorporates work covered by the following copyright and
25 * Copyright (c) 2007-2008 Atheros Communications, Inc.
27 * Permission to use, copy, modify, and/or distribute this software for any
28 * purpose with or without fee is hereby granted, provided that the above
29 * copyright notice and this permission notice appear in all copies.
31 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
32 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
33 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
34 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
35 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
36 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
37 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
43 int carl9170_led_set_state(struct ar9170
*ar
, const u32 led_state
)
45 return carl9170_write_reg(ar
, AR9170_GPIO_REG_PORT_DATA
, led_state
);
48 int carl9170_led_init(struct ar9170
*ar
)
53 /* GPIO [0/1 mode: output, 2/3: input] */
54 err
= carl9170_write_reg(ar
, AR9170_GPIO_REG_PORT_TYPE
, 3);
58 /* GPIO 0/1 value: off */
59 err
= carl9170_led_set_state(ar
, 0);
65 #ifdef CONFIG_CARL9170_LEDS
66 static void carl9170_led_update(struct work_struct
*work
)
68 struct ar9170
*ar
= container_of(work
, struct ar9170
, led_work
.work
);
69 int i
, tmp
= 300, blink_delay
= 1000;
73 if (!IS_ACCEPTING_CMD(ar
))
76 mutex_lock(&ar
->mutex
);
77 for (i
= 0; i
< AR9170_NUM_LEDS
; i
++) {
78 if (ar
->leds
[i
].registered
) {
79 if (ar
->leds
[i
].last_state
||
80 ar
->leds
[i
].toggled
) {
82 if (ar
->leds
[i
].toggled
)
83 tmp
= 70 + 200 / (ar
->leds
[i
].toggled
);
85 if (tmp
< blink_delay
)
89 ar
->leds
[i
].toggled
= 0;
95 carl9170_led_set_state(ar
, led_val
);
96 mutex_unlock(&ar
->mutex
);
101 ieee80211_queue_delayed_work(ar
->hw
,
103 msecs_to_jiffies(blink_delay
));
106 static void carl9170_led_set_brightness(struct led_classdev
*led
,
107 enum led_brightness brightness
)
109 struct carl9170_led
*arl
= container_of(led
, struct carl9170_led
, l
);
110 struct ar9170
*ar
= arl
->ar
;
112 if (!arl
->registered
)
115 if (arl
->last_state
!= !!brightness
) {
117 arl
->last_state
= !!brightness
;
120 if (likely(IS_ACCEPTING_CMD(ar
) && arl
->toggled
))
121 ieee80211_queue_delayed_work(ar
->hw
, &ar
->led_work
, HZ
/10);
124 static int carl9170_led_register_led(struct ar9170
*ar
, int i
, char *name
,
129 snprintf(ar
->leds
[i
].name
, sizeof(ar
->leds
[i
].name
),
130 "carl9170-%s::%s", wiphy_name(ar
->hw
->wiphy
), name
);
133 ar
->leds
[i
].l
.name
= ar
->leds
[i
].name
;
134 ar
->leds
[i
].l
.brightness_set
= carl9170_led_set_brightness
;
135 ar
->leds
[i
].l
.brightness
= 0;
136 ar
->leds
[i
].l
.default_trigger
= trigger
;
138 err
= led_classdev_register(wiphy_dev(ar
->hw
->wiphy
),
141 wiphy_err(ar
->hw
->wiphy
, "failed to register %s LED (%d).\n",
142 ar
->leds
[i
].name
, err
);
144 ar
->leds
[i
].registered
= true;
150 void carl9170_led_unregister(struct ar9170
*ar
)
154 for (i
= 0; i
< AR9170_NUM_LEDS
; i
++)
155 if (ar
->leds
[i
].registered
) {
156 led_classdev_unregister(&ar
->leds
[i
].l
);
157 ar
->leds
[i
].registered
= false;
158 ar
->leds
[i
].toggled
= 0;
161 cancel_delayed_work_sync(&ar
->led_work
);
164 int carl9170_led_register(struct ar9170
*ar
)
168 INIT_DELAYED_WORK(&ar
->led_work
, carl9170_led_update
);
170 err
= carl9170_led_register_led(ar
, 0, "tx",
171 ieee80211_get_tx_led_name(ar
->hw
));
175 if (ar
->features
& CARL9170_ONE_LED
)
178 err
= carl9170_led_register_led(ar
, 1, "assoc",
179 ieee80211_get_assoc_led_name(ar
->hw
));
186 carl9170_led_unregister(ar
);
190 #endif /* CONFIG_CARL9170_LEDS */