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Diffstat (limited to 'drivers/net/wireless/rtl818x/rtl8187/leds.c')
-rw-r--r--drivers/net/wireless/rtl818x/rtl8187/leds.c245
1 files changed, 245 insertions, 0 deletions
diff --git a/drivers/net/wireless/rtl818x/rtl8187/leds.c b/drivers/net/wireless/rtl818x/rtl8187/leds.c
new file mode 100644
index 000000000000..2e0de2f5f0f9
--- /dev/null
+++ b/drivers/net/wireless/rtl818x/rtl8187/leds.c
@@ -0,0 +1,245 @@
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"
23#include "leds.h"
24
25static 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. */
36 if (!priv->vif || priv->vif->type == NL80211_IFTYPE_UNSPECIFIED)
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:
45 rtl818x_iowrite8(priv, &priv->map->GPIO0, 0x01);
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
63static 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. */
74 if (!priv->vif || priv->vif->type == NL80211_IFTYPE_UNSPECIFIED)
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:
83 rtl818x_iowrite8(priv, &priv->map->GPIO0, 0x01);
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. */
102static 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;
108 struct rtl8187_priv *priv;
109 static bool radio_on;
110
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;
120 cancel_delayed_work_sync(&priv->led_on);
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 }
132}
133
134static int rtl8187_register_led(struct ieee80211_hw *dev,
135 struct rtl8187_led *led, const char *name,
136 const char *default_trigger, u8 ledpin,
137 bool is_radio)
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;
148 led->is_radio = is_radio;
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
164static void rtl8187_unregister_led(struct rtl8187_led *led)
165{
166 struct ieee80211_hw *hw = led->dev;
167 struct rtl8187_priv *priv = hw->priv;
168
169 led_classdev_unregister(&led->led_dev);
170 flush_delayed_work(&priv->led_off);
171 led->dev = NULL;
172}
173
174void 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
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
214 snprintf(name, sizeof(name),
215 "rtl8187-%s::tx", wiphy_name(dev->wiphy));
216 err = rtl8187_register_led(dev, &priv->led_tx, name,
217 ieee80211_get_tx_led_name(dev), ledpin, false);
218 if (err)
219 goto err_tx;
220
221 snprintf(name, sizeof(name),
222 "rtl8187-%s::rx", wiphy_name(dev->wiphy));
223 err = rtl8187_register_led(dev, &priv->led_rx, name,
224 ieee80211_get_rx_led_name(dev), ledpin, false);
225 if (!err)
226 return;
227
228 /* registration of RX LED failed - unregister */
229 rtl8187_unregister_led(&priv->led_tx);
230err_tx:
231 rtl8187_unregister_led(&priv->led_radio);
232}
233
234void rtl8187_leds_exit(struct ieee80211_hw *dev)
235{
236 struct rtl8187_priv *priv = dev->priv;
237
238 rtl8187_unregister_led(&priv->led_radio);
239 rtl8187_unregister_led(&priv->led_rx);
240 rtl8187_unregister_led(&priv->led_tx);
241 cancel_delayed_work_sync(&priv->led_off);
242 cancel_delayed_work_sync(&priv->led_on);
243}
244#endif /* def CONFIG_RTL8187_LEDS */
245
generated by cgit v1.2.2 (git 2.25.0) at 2024-11-17 10:18:16 -0500