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0597c014 CL |
1 | /* |
2 | * Common code for mac80211 Prism54 drivers | |
3 | * | |
4 | * Copyright (c) 2006, Michael Wu <flamingice@sourmilk.net> | |
5 | * Copyright (c) 2007-2009, Christian Lamparter <chunkeey@web.de> | |
6 | * Copyright 2008, Johannes Berg <johannes@sipsolutions.net> | |
7 | * | |
8 | * Based on: | |
9 | * - the islsm (softmac prism54) driver, which is: | |
10 | * Copyright 2004-2006 Jean-Baptiste Note <jbnote@gmail.com>, et al. | |
11 | * - stlc45xx driver | |
12 | * Copyright (C) 2008 Nokia Corporation and/or its subsidiary(-ies). | |
13 | * | |
14 | * This program is free software; you can redistribute it and/or modify | |
15 | * it under the terms of the GNU General Public License version 2 as | |
16 | * published by the Free Software Foundation. | |
17 | */ | |
18 | ||
0597c014 CL |
19 | #include <linux/firmware.h> |
20 | #include <linux/etherdevice.h> | |
21 | ||
22 | #include <net/mac80211.h> | |
23 | #ifdef CONFIG_P54_LEDS | |
24 | #include <linux/leds.h> | |
25 | #endif /* CONFIG_P54_LEDS */ | |
26 | ||
27 | #include "p54.h" | |
28 | #include "lmac.h" | |
29 | ||
30 | static void p54_update_leds(struct work_struct *work) | |
31 | { | |
32 | struct p54_common *priv = container_of(work, struct p54_common, | |
33 | led_work.work); | |
34 | int err, i, tmp, blink_delay = 400; | |
35 | bool rerun = false; | |
36 | ||
37 | /* Don't toggle the LED, when the device is down. */ | |
38 | if (priv->mode == NL80211_IFTYPE_UNSPECIFIED) | |
39 | return ; | |
40 | ||
41 | for (i = 0; i < ARRAY_SIZE(priv->leds); i++) | |
42 | if (priv->leds[i].toggled) { | |
43 | priv->softled_state |= BIT(i); | |
44 | ||
45 | tmp = 70 + 200 / (priv->leds[i].toggled); | |
46 | if (tmp < blink_delay) | |
47 | blink_delay = tmp; | |
48 | ||
49 | if (priv->leds[i].led_dev.brightness == LED_OFF) | |
50 | rerun = true; | |
51 | ||
52 | priv->leds[i].toggled = | |
53 | !!priv->leds[i].led_dev.brightness; | |
54 | } else | |
55 | priv->softled_state &= ~BIT(i); | |
56 | ||
57 | err = p54_set_leds(priv); | |
58 | if (err && net_ratelimit()) | |
c96c31e4 | 59 | wiphy_err(priv->hw->wiphy, |
5db55844 | 60 | "failed to update LEDs (%d).\n", err); |
0597c014 CL |
61 | |
62 | if (rerun) | |
42935eca | 63 | ieee80211_queue_delayed_work(priv->hw, &priv->led_work, |
0597c014 CL |
64 | msecs_to_jiffies(blink_delay)); |
65 | } | |
66 | ||
67 | static void p54_led_brightness_set(struct led_classdev *led_dev, | |
68 | enum led_brightness brightness) | |
69 | { | |
70 | struct p54_led_dev *led = container_of(led_dev, struct p54_led_dev, | |
71 | led_dev); | |
72 | struct ieee80211_hw *dev = led->hw_dev; | |
73 | struct p54_common *priv = dev->priv; | |
74 | ||
75 | if (priv->mode == NL80211_IFTYPE_UNSPECIFIED) | |
76 | return ; | |
77 | ||
78 | if ((brightness) && (led->registered)) { | |
79 | led->toggled++; | |
42935eca | 80 | ieee80211_queue_delayed_work(priv->hw, &priv->led_work, HZ/10); |
0597c014 CL |
81 | } |
82 | } | |
83 | ||
84 | static int p54_register_led(struct p54_common *priv, | |
85 | unsigned int led_index, | |
f5c4ae07 | 86 | char *name, const char *trigger) |
0597c014 CL |
87 | { |
88 | struct p54_led_dev *led = &priv->leds[led_index]; | |
89 | int err; | |
90 | ||
91 | if (led->registered) | |
92 | return -EEXIST; | |
93 | ||
94 | snprintf(led->name, sizeof(led->name), "p54-%s::%s", | |
95 | wiphy_name(priv->hw->wiphy), name); | |
96 | led->hw_dev = priv->hw; | |
97 | led->index = led_index; | |
98 | led->led_dev.name = led->name; | |
99 | led->led_dev.default_trigger = trigger; | |
100 | led->led_dev.brightness_set = p54_led_brightness_set; | |
101 | ||
102 | err = led_classdev_register(wiphy_dev(priv->hw->wiphy), &led->led_dev); | |
103 | if (err) | |
c96c31e4 | 104 | wiphy_err(priv->hw->wiphy, |
5db55844 | 105 | "Failed to register %s LED.\n", name); |
0597c014 CL |
106 | else |
107 | led->registered = 1; | |
108 | ||
109 | return err; | |
110 | } | |
111 | ||
112 | int p54_init_leds(struct p54_common *priv) | |
113 | { | |
114 | int err; | |
115 | ||
116 | /* | |
117 | * TODO: | |
118 | * Figure out if the EEPROM contains some hints about the number | |
119 | * of available/programmable LEDs of the device. | |
120 | */ | |
121 | ||
122 | INIT_DELAYED_WORK(&priv->led_work, p54_update_leds); | |
123 | ||
124 | err = p54_register_led(priv, 0, "assoc", | |
125 | ieee80211_get_assoc_led_name(priv->hw)); | |
126 | if (err) | |
127 | return err; | |
128 | ||
129 | err = p54_register_led(priv, 1, "tx", | |
130 | ieee80211_get_tx_led_name(priv->hw)); | |
131 | if (err) | |
132 | return err; | |
133 | ||
134 | err = p54_register_led(priv, 2, "rx", | |
135 | ieee80211_get_rx_led_name(priv->hw)); | |
136 | if (err) | |
137 | return err; | |
138 | ||
139 | err = p54_register_led(priv, 3, "radio", | |
140 | ieee80211_get_radio_led_name(priv->hw)); | |
141 | if (err) | |
142 | return err; | |
143 | ||
144 | err = p54_set_leds(priv); | |
145 | return err; | |
146 | } | |
147 | ||
148 | void p54_unregister_leds(struct p54_common *priv) | |
149 | { | |
150 | int i; | |
151 | ||
152 | for (i = 0; i < ARRAY_SIZE(priv->leds); i++) { | |
153 | if (priv->leds[i].registered) { | |
154 | priv->leds[i].registered = false; | |
155 | priv->leds[i].toggled = 0; | |
156 | led_classdev_unregister(&priv->leds[i].led_dev); | |
157 | } | |
158 | } | |
159 | ||
160 | cancel_delayed_work_sync(&priv->led_work); | |
161 | } |