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authorLinus Torvalds <torvalds@linux-foundation.org>2009-03-27 21:35:03 -0400
committerLinus Torvalds <torvalds@linux-foundation.org>2009-03-27 21:35:03 -0400
commit5d80f8e5a9dc9c9a94d4aeaa567e219a808b8a4a (patch)
tree357258d77e2153ef7409926773655c5f8775a1f3 /drivers/net/wireless/ar9170/led.c
parent7b616c8a2f5c8507b4aed6907336ec5b85803a39 (diff)
parent0870352bc6e0dee485c86a0c99dd60e7089c8917 (diff)
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6: (166 commits) Revert "ax25: zero length frame filtering in AX25" Revert "netrom: zero length frame filtering in NetRom" cfg80211: default CONFIG_WIRELESS_OLD_REGULATORY to n mac80211/iwlwifi: move virtual A-MDPU queue bookkeeping to iwlwifi mac80211: fix aggregation to not require queue stop mac80211: add skb length sanity checking mac80211: unify and fix TX aggregation start mac80211: clean up __ieee80211_tx args mac80211: rework the pending packets code mac80211: fix A-MPDU queue assignment mac80211: rewrite fragmentation iwlwifi: show current driver status in user readable format b43: Add BCM4307 PCI-ID cfg80211: fix locking in nl80211_set_wiphy mac80211: fix RX path ath5k: properly drop packets from ops->tx ar9170: single module build ath9k: fix dma mapping leak of rx buffer upon rmmod rt2x00: New USB ID for rt73usb ath5k: warn and correct rate for unknown hw rate indexes ...
Diffstat (limited to 'drivers/net/wireless/ar9170/led.c')
-rw-r--r--drivers/net/wireless/ar9170/led.c171
1 files changed, 171 insertions, 0 deletions
diff --git a/drivers/net/wireless/ar9170/led.c b/drivers/net/wireless/ar9170/led.c
new file mode 100644
index 000000000000..341cead7f606
--- /dev/null
+++ b/drivers/net/wireless/ar9170/led.c
@@ -0,0 +1,171 @@
1/*
2 * Atheros AR9170 driver
3 *
4 * LED handling
5 *
6 * Copyright 2008, Johannes Berg <johannes@sipsolutions.net>
7 *
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License as published by
10 * the Free Software Foundation; either version 2 of the License, or
11 * (at your option) any later version.
12 *
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
17 *
18 * You should have received a copy of the GNU General Public License
19 * along with this program; see the file COPYING. If not, see
20 * http://www.gnu.org/licenses/.
21 *
22 * This file incorporates work covered by the following copyright and
23 * permission notice:
24 * Copyright (c) 2007-2008 Atheros Communications, Inc.
25 *
26 * Permission to use, copy, modify, and/or distribute this software for any
27 * purpose with or without fee is hereby granted, provided that the above
28 * copyright notice and this permission notice appear in all copies.
29 *
30 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
31 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
32 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
33 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
34 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
35 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
36 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
37 */
38
39#include "ar9170.h"
40#include "cmd.h"
41
42int ar9170_set_leds_state(struct ar9170 *ar, u32 led_state)
43{
44 return ar9170_write_reg(ar, AR9170_GPIO_REG_DATA, led_state);
45}
46
47int ar9170_init_leds(struct ar9170 *ar)
48{
49 int err;
50
51 /* disable LEDs */
52 /* GPIO [0/1 mode: output, 2/3: input] */
53 err = ar9170_write_reg(ar, AR9170_GPIO_REG_PORT_TYPE, 3);
54 if (err)
55 goto out;
56
57 /* GPIO 0/1 value: off */
58 err = ar9170_set_leds_state(ar, 0);
59
60out:
61 return err;
62}
63
64#ifdef CONFIG_AR9170_LEDS
65static void ar9170_update_leds(struct work_struct *work)
66{
67 struct ar9170 *ar = container_of(work, struct ar9170, led_work.work);
68 int i, tmp, blink_delay = 1000;
69 u32 led_val = 0;
70 bool rerun = false;
71
72 if (unlikely(!IS_ACCEPTING_CMD(ar)))
73 return ;
74
75 mutex_lock(&ar->mutex);
76 for (i = 0; i < AR9170_NUM_LEDS; i++)
77 if (ar->leds[i].toggled) {
78 led_val |= 1 << i;
79
80 tmp = 70 + 200 / (ar->leds[i].toggled);
81 if (tmp < blink_delay)
82 blink_delay = tmp;
83
84 if (ar->leds[i].toggled > 1)
85 ar->leds[i].toggled = 0;
86
87 rerun = true;
88 }
89
90 ar9170_set_leds_state(ar, led_val);
91 mutex_unlock(&ar->mutex);
92
93 if (rerun)
94 queue_delayed_work(ar->hw->workqueue, &ar->led_work,
95 msecs_to_jiffies(blink_delay));
96}
97
98static void ar9170_led_brightness_set(struct led_classdev *led,
99 enum led_brightness brightness)
100{
101 struct ar9170_led *arl = container_of(led, struct ar9170_led, l);
102 struct ar9170 *ar = arl->ar;
103
104 arl->toggled++;
105
106 if (likely(IS_ACCEPTING_CMD(ar) && brightness))
107 queue_delayed_work(ar->hw->workqueue, &ar->led_work, HZ/10);
108}
109
110static int ar9170_register_led(struct ar9170 *ar, int i, char *name,
111 char *trigger)
112{
113 int err;
114
115 snprintf(ar->leds[i].name, sizeof(ar->leds[i].name),
116 "ar9170-%s::%s", wiphy_name(ar->hw->wiphy), name);
117
118 ar->leds[i].ar = ar;
119 ar->leds[i].l.name = ar->leds[i].name;
120 ar->leds[i].l.brightness_set = ar9170_led_brightness_set;
121 ar->leds[i].l.brightness = 0;
122 ar->leds[i].l.default_trigger = trigger;
123
124 err = led_classdev_register(wiphy_dev(ar->hw->wiphy),
125 &ar->leds[i].l);
126 if (err)
127 printk(KERN_ERR "%s: failed to register %s LED (%d).\n",
128 wiphy_name(ar->hw->wiphy), ar->leds[i].name, err);
129 else
130 ar->leds[i].registered = true;
131
132 return err;
133}
134
135void ar9170_unregister_leds(struct ar9170 *ar)
136{
137 int i;
138
139 cancel_delayed_work_sync(&ar->led_work);
140
141 for (i = 0; i < AR9170_NUM_LEDS; i++)
142 if (ar->leds[i].registered) {
143 led_classdev_unregister(&ar->leds[i].l);
144 ar->leds[i].registered = false;
145 }
146}
147
148int ar9170_register_leds(struct ar9170 *ar)
149{
150 int err;
151
152 INIT_DELAYED_WORK(&ar->led_work, ar9170_update_leds);
153
154 err = ar9170_register_led(ar, 0, "tx",
155 ieee80211_get_tx_led_name(ar->hw));
156 if (err)
157 goto fail;
158
159 err = ar9170_register_led(ar, 1, "assoc",
160 ieee80211_get_assoc_led_name(ar->hw));
161 if (err)
162 goto fail;
163
164 return 0;
165
166fail:
167 ar9170_unregister_leds(ar);
168 return err;
169}
170
171#endif /* CONFIG_AR9170_LEDS */