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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 | ||
19 | #include <linux/init.h> | |
20 | #include <linux/firmware.h> | |
21 | #include <linux/etherdevice.h> | |
22 | ||
23 | #include <net/mac80211.h> | |
24 | #ifdef CONFIG_P54_LEDS | |
25 | #include <linux/leds.h> | |
26 | #endif /* CONFIG_P54_LEDS */ | |
27 | ||
28 | #include "p54.h" | |
29 | #include "lmac.h" | |
30 | ||
31 | static void p54_update_leds(struct work_struct *work) | |
32 | { | |
33 | struct p54_common *priv = container_of(work, struct p54_common, | |
34 | led_work.work); | |
35 | int err, i, tmp, blink_delay = 400; | |
36 | bool rerun = false; | |
37 | ||
38 | /* Don't toggle the LED, when the device is down. */ | |
39 | if (priv->mode == NL80211_IFTYPE_UNSPECIFIED) | |
40 | return ; | |
41 | ||
42 | for (i = 0; i < ARRAY_SIZE(priv->leds); i++) | |
43 | if (priv->leds[i].toggled) { | |
44 | priv->softled_state |= BIT(i); | |
45 | ||
46 | tmp = 70 + 200 / (priv->leds[i].toggled); | |
47 | if (tmp < blink_delay) | |
48 | blink_delay = tmp; | |
49 | ||
50 | if (priv->leds[i].led_dev.brightness == LED_OFF) | |
51 | rerun = true; | |
52 | ||
53 | priv->leds[i].toggled = | |
54 | !!priv->leds[i].led_dev.brightness; | |
55 | } else | |
56 | priv->softled_state &= ~BIT(i); | |
57 | ||
58 | err = p54_set_leds(priv); | |
59 | if (err && net_ratelimit()) | |
c96c31e4 | 60 | wiphy_err(priv->hw->wiphy, |
5db55844 | 61 | "failed to update LEDs (%d).\n", err); |
0597c014 CL |
62 | |
63 | if (rerun) | |
42935eca | 64 | ieee80211_queue_delayed_work(priv->hw, &priv->led_work, |
0597c014 CL |
65 | msecs_to_jiffies(blink_delay)); |
66 | } | |
67 | ||
68 | static void p54_led_brightness_set(struct led_classdev *led_dev, | |
69 | enum led_brightness brightness) | |
70 | { | |
71 | struct p54_led_dev *led = container_of(led_dev, struct p54_led_dev, | |
72 | led_dev); | |
73 | struct ieee80211_hw *dev = led->hw_dev; | |
74 | struct p54_common *priv = dev->priv; | |
75 | ||
76 | if (priv->mode == NL80211_IFTYPE_UNSPECIFIED) | |
77 | return ; | |
78 | ||
79 | if ((brightness) && (led->registered)) { | |
80 | led->toggled++; | |
42935eca | 81 | ieee80211_queue_delayed_work(priv->hw, &priv->led_work, HZ/10); |
0597c014 CL |
82 | } |
83 | } | |
84 | ||
85 | static int p54_register_led(struct p54_common *priv, | |
86 | unsigned int led_index, | |
87 | char *name, char *trigger) | |
88 | { | |
89 | struct p54_led_dev *led = &priv->leds[led_index]; | |
90 | int err; | |
91 | ||
92 | if (led->registered) | |
93 | return -EEXIST; | |
94 | ||
95 | snprintf(led->name, sizeof(led->name), "p54-%s::%s", | |
96 | wiphy_name(priv->hw->wiphy), name); | |
97 | led->hw_dev = priv->hw; | |
98 | led->index = led_index; | |
99 | led->led_dev.name = led->name; | |
100 | led->led_dev.default_trigger = trigger; | |
101 | led->led_dev.brightness_set = p54_led_brightness_set; | |
102 | ||
103 | err = led_classdev_register(wiphy_dev(priv->hw->wiphy), &led->led_dev); | |
104 | if (err) | |
c96c31e4 | 105 | wiphy_err(priv->hw->wiphy, |
5db55844 | 106 | "Failed to register %s LED.\n", name); |
0597c014 CL |
107 | else |
108 | led->registered = 1; | |
109 | ||
110 | return err; | |
111 | } | |
112 | ||
113 | int p54_init_leds(struct p54_common *priv) | |
114 | { | |
115 | int err; | |
116 | ||
117 | /* | |
118 | * TODO: | |
119 | * Figure out if the EEPROM contains some hints about the number | |
120 | * of available/programmable LEDs of the device. | |
121 | */ | |
122 | ||
123 | INIT_DELAYED_WORK(&priv->led_work, p54_update_leds); | |
124 | ||
125 | err = p54_register_led(priv, 0, "assoc", | |
126 | ieee80211_get_assoc_led_name(priv->hw)); | |
127 | if (err) | |
128 | return err; | |
129 | ||
130 | err = p54_register_led(priv, 1, "tx", | |
131 | ieee80211_get_tx_led_name(priv->hw)); | |
132 | if (err) | |
133 | return err; | |
134 | ||
135 | err = p54_register_led(priv, 2, "rx", | |
136 | ieee80211_get_rx_led_name(priv->hw)); | |
137 | if (err) | |
138 | return err; | |
139 | ||
140 | err = p54_register_led(priv, 3, "radio", | |
141 | ieee80211_get_radio_led_name(priv->hw)); | |
142 | if (err) | |
143 | return err; | |
144 | ||
145 | err = p54_set_leds(priv); | |
146 | return err; | |
147 | } | |
148 | ||
149 | void p54_unregister_leds(struct p54_common *priv) | |
150 | { | |
151 | int i; | |
152 | ||
153 | for (i = 0; i < ARRAY_SIZE(priv->leds); i++) { | |
154 | if (priv->leds[i].registered) { | |
155 | priv->leds[i].registered = false; | |
156 | priv->leds[i].toggled = 0; | |
157 | led_classdev_unregister(&priv->leds[i].led_dev); | |
158 | } | |
159 | } | |
160 | ||
161 | cancel_delayed_work_sync(&priv->led_work); | |
162 | } |