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a027087a LF |
1 | /* |
2 | * Linux LED driver for RTL8187 | |
3 | * | |
4 | * Copyright 2009 Larry Finger <Larry.Finger@lwfinger.net> | |
5 | * | |
6 | * Based on the LED handling in the r8187 driver, which is: | |
7 | * Copyright (c) Realtek Semiconductor Corp. All rights reserved. | |
8 | * | |
9 | * Thanks to Realtek for their support! | |
10 | * | |
11 | * This program is free software; you can redistribute it and/or modify | |
12 | * it under the terms of the GNU General Public License version 2 as | |
13 | * published by the Free Software Foundation. | |
14 | */ | |
15 | ||
16 | #ifdef CONFIG_RTL8187_LEDS | |
17 | ||
18 | #include <net/mac80211.h> | |
19 | #include <linux/usb.h> | |
20 | #include <linux/eeprom_93cx6.h> | |
21 | ||
22 | #include "rtl8187.h" | |
3cfeb0c3 | 23 | #include "leds.h" |
a027087a LF |
24 | |
25 | static void led_turn_on(struct work_struct *work) | |
26 | { | |
27 | /* As this routine does read/write operations on the hardware, it must | |
28 | * be run from a work queue. | |
29 | */ | |
30 | u8 reg; | |
31 | struct rtl8187_priv *priv = container_of(work, struct rtl8187_priv, | |
32 | led_on.work); | |
33 | struct rtl8187_led *led = &priv->led_tx; | |
34 | ||
35 | /* Don't change the LED, when the device is down. */ | |
d30506e0 | 36 | if (!priv->vif || priv->vif->type == NL80211_IFTYPE_UNSPECIFIED) |
a027087a LF |
37 | return ; |
38 | ||
39 | /* Skip if the LED is not registered. */ | |
40 | if (!led->dev) | |
41 | return; | |
42 | mutex_lock(&priv->conf_mutex); | |
43 | switch (led->ledpin) { | |
44 | case LED_PIN_GPIO0: | |
ca9152e3 | 45 | rtl818x_iowrite8(priv, &priv->map->GPIO0, 0x01); |
a027087a LF |
46 | rtl818x_iowrite8(priv, &priv->map->GP_ENABLE, 0x00); |
47 | break; | |
48 | case LED_PIN_LED0: | |
49 | reg = rtl818x_ioread8(priv, &priv->map->PGSELECT) & ~(1 << 4); | |
50 | rtl818x_iowrite8(priv, &priv->map->PGSELECT, reg); | |
51 | break; | |
52 | case LED_PIN_LED1: | |
53 | reg = rtl818x_ioread8(priv, &priv->map->PGSELECT) & ~(1 << 5); | |
54 | rtl818x_iowrite8(priv, &priv->map->PGSELECT, reg); | |
55 | break; | |
56 | case LED_PIN_HW: | |
57 | default: | |
58 | break; | |
59 | } | |
60 | mutex_unlock(&priv->conf_mutex); | |
61 | } | |
62 | ||
63 | static void led_turn_off(struct work_struct *work) | |
64 | { | |
65 | /* As this routine does read/write operations on the hardware, it must | |
66 | * be run from a work queue. | |
67 | */ | |
68 | u8 reg; | |
69 | struct rtl8187_priv *priv = container_of(work, struct rtl8187_priv, | |
70 | led_off.work); | |
71 | struct rtl8187_led *led = &priv->led_tx; | |
72 | ||
73 | /* Don't change the LED, when the device is down. */ | |
d30506e0 | 74 | if (!priv->vif || priv->vif->type == NL80211_IFTYPE_UNSPECIFIED) |
a027087a LF |
75 | return ; |
76 | ||
77 | /* Skip if the LED is not registered. */ | |
78 | if (!led->dev) | |
79 | return; | |
80 | mutex_lock(&priv->conf_mutex); | |
81 | switch (led->ledpin) { | |
82 | case LED_PIN_GPIO0: | |
ca9152e3 | 83 | rtl818x_iowrite8(priv, &priv->map->GPIO0, 0x01); |
a027087a LF |
84 | rtl818x_iowrite8(priv, &priv->map->GP_ENABLE, 0x01); |
85 | break; | |
86 | case LED_PIN_LED0: | |
87 | reg = rtl818x_ioread8(priv, &priv->map->PGSELECT) | (1 << 4); | |
88 | rtl818x_iowrite8(priv, &priv->map->PGSELECT, reg); | |
89 | break; | |
90 | case LED_PIN_LED1: | |
91 | reg = rtl818x_ioread8(priv, &priv->map->PGSELECT) | (1 << 5); | |
92 | rtl818x_iowrite8(priv, &priv->map->PGSELECT, reg); | |
93 | break; | |
94 | case LED_PIN_HW: | |
95 | default: | |
96 | break; | |
97 | } | |
98 | mutex_unlock(&priv->conf_mutex); | |
99 | } | |
100 | ||
101 | /* Callback from the LED subsystem. */ | |
102 | static void rtl8187_led_brightness_set(struct led_classdev *led_dev, | |
103 | enum led_brightness brightness) | |
104 | { | |
105 | struct rtl8187_led *led = container_of(led_dev, struct rtl8187_led, | |
106 | led_dev); | |
107 | struct ieee80211_hw *hw = led->dev; | |
49d7590c HRK |
108 | struct rtl8187_priv *priv; |
109 | static bool radio_on; | |
a027087a | 110 | |
49d7590c HRK |
111 | if (!hw) |
112 | return; | |
113 | priv = hw->priv; | |
114 | if (led->is_radio) { | |
115 | if (brightness == LED_FULL) { | |
116 | ieee80211_queue_delayed_work(hw, &priv->led_on, 0); | |
117 | radio_on = true; | |
118 | } else if (radio_on) { | |
119 | radio_on = false; | |
0fde0a8c | 120 | cancel_delayed_work(&priv->led_on); |
49d7590c HRK |
121 | ieee80211_queue_delayed_work(hw, &priv->led_off, 0); |
122 | } | |
123 | } else if (radio_on) { | |
124 | if (brightness == LED_OFF) { | |
125 | ieee80211_queue_delayed_work(hw, &priv->led_off, 0); | |
126 | /* The LED is off for 1/20 sec - it just blinks. */ | |
127 | ieee80211_queue_delayed_work(hw, &priv->led_on, | |
128 | HZ / 20); | |
129 | } else | |
130 | ieee80211_queue_delayed_work(hw, &priv->led_on, 0); | |
131 | } | |
a027087a LF |
132 | } |
133 | ||
134 | static int rtl8187_register_led(struct ieee80211_hw *dev, | |
135 | struct rtl8187_led *led, const char *name, | |
49d7590c HRK |
136 | const char *default_trigger, u8 ledpin, |
137 | bool is_radio) | |
a027087a LF |
138 | { |
139 | int err; | |
140 | struct rtl8187_priv *priv = dev->priv; | |
141 | ||
142 | if (led->dev) | |
143 | return -EEXIST; | |
144 | if (!default_trigger) | |
145 | return -EINVAL; | |
146 | led->dev = dev; | |
147 | led->ledpin = ledpin; | |
49d7590c | 148 | led->is_radio = is_radio; |
a027087a LF |
149 | strncpy(led->name, name, sizeof(led->name)); |
150 | ||
151 | led->led_dev.name = led->name; | |
152 | led->led_dev.default_trigger = default_trigger; | |
153 | led->led_dev.brightness_set = rtl8187_led_brightness_set; | |
154 | ||
155 | err = led_classdev_register(&priv->udev->dev, &led->led_dev); | |
156 | if (err) { | |
157 | printk(KERN_INFO "LEDs: Failed to register %s\n", name); | |
158 | led->dev = NULL; | |
159 | return err; | |
160 | } | |
161 | return 0; | |
162 | } | |
163 | ||
164 | static void rtl8187_unregister_led(struct rtl8187_led *led) | |
165 | { | |
49d7590c HRK |
166 | struct ieee80211_hw *hw = led->dev; |
167 | struct rtl8187_priv *priv = hw->priv; | |
168 | ||
a027087a | 169 | led_classdev_unregister(&led->led_dev); |
49d7590c | 170 | flush_delayed_work(&priv->led_off); |
a027087a LF |
171 | led->dev = NULL; |
172 | } | |
173 | ||
174 | void rtl8187_leds_init(struct ieee80211_hw *dev, u16 custid) | |
175 | { | |
176 | struct rtl8187_priv *priv = dev->priv; | |
177 | char name[RTL8187_LED_MAX_NAME_LEN + 1]; | |
178 | u8 ledpin; | |
179 | int err; | |
180 | ||
181 | /* According to the vendor driver, the LED operation depends on the | |
182 | * customer ID encoded in the EEPROM | |
183 | */ | |
184 | printk(KERN_INFO "rtl8187: Customer ID is 0x%02X\n", custid); | |
185 | switch (custid) { | |
186 | case EEPROM_CID_RSVD0: | |
187 | case EEPROM_CID_RSVD1: | |
188 | case EEPROM_CID_SERCOMM_PS: | |
189 | case EEPROM_CID_QMI: | |
190 | case EEPROM_CID_DELL: | |
191 | case EEPROM_CID_TOSHIBA: | |
192 | ledpin = LED_PIN_GPIO0; | |
193 | break; | |
194 | case EEPROM_CID_ALPHA0: | |
195 | ledpin = LED_PIN_LED0; | |
196 | break; | |
197 | case EEPROM_CID_HW: | |
198 | ledpin = LED_PIN_HW; | |
199 | break; | |
200 | default: | |
201 | ledpin = LED_PIN_GPIO0; | |
202 | } | |
203 | ||
204 | INIT_DELAYED_WORK(&priv->led_on, led_turn_on); | |
205 | INIT_DELAYED_WORK(&priv->led_off, led_turn_off); | |
206 | ||
49d7590c HRK |
207 | snprintf(name, sizeof(name), |
208 | "rtl8187-%s::radio", wiphy_name(dev->wiphy)); | |
209 | err = rtl8187_register_led(dev, &priv->led_radio, name, | |
210 | ieee80211_get_radio_led_name(dev), ledpin, true); | |
211 | if (err) | |
212 | return; | |
213 | ||
a027087a LF |
214 | snprintf(name, sizeof(name), |
215 | "rtl8187-%s::tx", wiphy_name(dev->wiphy)); | |
216 | err = rtl8187_register_led(dev, &priv->led_tx, name, | |
49d7590c | 217 | ieee80211_get_tx_led_name(dev), ledpin, false); |
a027087a | 218 | if (err) |
49d7590c HRK |
219 | goto err_tx; |
220 | ||
a027087a LF |
221 | snprintf(name, sizeof(name), |
222 | "rtl8187-%s::rx", wiphy_name(dev->wiphy)); | |
223 | err = rtl8187_register_led(dev, &priv->led_rx, name, | |
49d7590c HRK |
224 | ieee80211_get_rx_led_name(dev), ledpin, false); |
225 | if (!err) | |
a027087a | 226 | return; |
49d7590c HRK |
227 | |
228 | /* registration of RX LED failed - unregister */ | |
a027087a | 229 | rtl8187_unregister_led(&priv->led_tx); |
49d7590c HRK |
230 | err_tx: |
231 | rtl8187_unregister_led(&priv->led_radio); | |
a027087a LF |
232 | } |
233 | ||
234 | void rtl8187_leds_exit(struct ieee80211_hw *dev) | |
235 | { | |
236 | struct rtl8187_priv *priv = dev->priv; | |
237 | ||
49d7590c | 238 | rtl8187_unregister_led(&priv->led_radio); |
a027087a | 239 | rtl8187_unregister_led(&priv->led_rx); |
3da7429c | 240 | rtl8187_unregister_led(&priv->led_tx); |
37b12dd2 LF |
241 | cancel_delayed_work_sync(&priv->led_off); |
242 | cancel_delayed_work_sync(&priv->led_on); | |
a027087a | 243 | } |
634c8d25 | 244 | #endif /* def CONFIG_RTL8187_LEDS */ |
a027087a | 245 |