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28#include <linux/kernel.h>
29#include <linux/module.h>
30#include <linux/delay.h>
31#include <linux/skbuff.h>
32#include <linux/netdevice.h>
33#include <net/mac80211.h>
34#include <linux/etherdevice.h>
35#include <asm/unaligned.h>
36#include "iwl-io.h"
37#include "iwl-trans.h"
38#include "iwl-modparams.h"
39#include "dev.h"
40#include "agn.h"
41
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54
55static const struct ieee80211_tpt_blink iwl_blink[] = {
56 { .throughput = 0, .blink_time = 334 },
57 { .throughput = 1 * 1024 - 1, .blink_time = 260 },
58 { .throughput = 5 * 1024 - 1, .blink_time = 220 },
59 { .throughput = 10 * 1024 - 1, .blink_time = 190 },
60 { .throughput = 20 * 1024 - 1, .blink_time = 170 },
61 { .throughput = 50 * 1024 - 1, .blink_time = 150 },
62 { .throughput = 70 * 1024 - 1, .blink_time = 130 },
63 { .throughput = 100 * 1024 - 1, .blink_time = 110 },
64 { .throughput = 200 * 1024 - 1, .blink_time = 80 },
65 { .throughput = 300 * 1024 - 1, .blink_time = 50 },
66};
67
68
69void iwlagn_led_enable(struct iwl_priv *priv)
70{
71 iwl_write32(priv->trans, CSR_LED_REG, CSR_LED_REG_TURN_ON);
72}
73
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84
85static inline u8 iwl_blink_compensation(struct iwl_priv *priv,
86 u8 time, u16 compensation)
87{
88 if (!compensation) {
89 IWL_ERR(priv, "undefined blink compensation: "
90 "use pre-defined blinking time\n");
91 return time;
92 }
93
94 return (u8)((time * compensation) >> 6);
95}
96
97static int iwl_send_led_cmd(struct iwl_priv *priv, struct iwl_led_cmd *led_cmd)
98{
99 struct iwl_host_cmd cmd = {
100 .id = REPLY_LEDS_CMD,
101 .len = { sizeof(struct iwl_led_cmd), },
102 .data = { led_cmd, },
103 .flags = CMD_ASYNC,
104 };
105 u32 reg;
106
107 reg = iwl_read32(priv->trans, CSR_LED_REG);
108 if (reg != (reg & CSR_LED_BSM_CTRL_MSK))
109 iwl_write32(priv->trans, CSR_LED_REG,
110 reg & CSR_LED_BSM_CTRL_MSK);
111
112 return iwl_dvm_send_cmd(priv, &cmd);
113}
114
115
116static int iwl_led_cmd(struct iwl_priv *priv,
117 unsigned long on,
118 unsigned long off)
119{
120 struct iwl_led_cmd led_cmd = {
121 .id = IWL_LED_LINK,
122 .interval = IWL_DEF_LED_INTRVL
123 };
124 int ret;
125
126 if (!test_bit(STATUS_READY, &priv->status))
127 return -EBUSY;
128
129 if (priv->blink_on == on && priv->blink_off == off)
130 return 0;
131
132 if (off == 0) {
133
134 on = IWL_LED_SOLID;
135 }
136
137 IWL_DEBUG_LED(priv, "Led blink time compensation=%u\n",
138 priv->cfg->base_params->led_compensation);
139 led_cmd.on = iwl_blink_compensation(priv, on,
140 priv->cfg->base_params->led_compensation);
141 led_cmd.off = iwl_blink_compensation(priv, off,
142 priv->cfg->base_params->led_compensation);
143
144 ret = iwl_send_led_cmd(priv, &led_cmd);
145 if (!ret) {
146 priv->blink_on = on;
147 priv->blink_off = off;
148 }
149 return ret;
150}
151
152static void iwl_led_brightness_set(struct led_classdev *led_cdev,
153 enum led_brightness brightness)
154{
155 struct iwl_priv *priv = container_of(led_cdev, struct iwl_priv, led);
156 unsigned long on = 0;
157
158 if (brightness > 0)
159 on = IWL_LED_SOLID;
160
161 iwl_led_cmd(priv, on, 0);
162}
163
164static int iwl_led_blink_set(struct led_classdev *led_cdev,
165 unsigned long *delay_on,
166 unsigned long *delay_off)
167{
168 struct iwl_priv *priv = container_of(led_cdev, struct iwl_priv, led);
169
170 return iwl_led_cmd(priv, *delay_on, *delay_off);
171}
172
173void iwl_leds_init(struct iwl_priv *priv)
174{
175 int mode = iwlwifi_mod_params.led_mode;
176 int ret;
177
178 if (mode == IWL_LED_DISABLE) {
179 IWL_INFO(priv, "Led disabled\n");
180 return;
181 }
182 if (mode == IWL_LED_DEFAULT)
183 mode = priv->cfg->led_mode;
184
185 priv->led.name = kasprintf(GFP_KERNEL, "%s-led",
186 wiphy_name(priv->hw->wiphy));
187 priv->led.brightness_set = iwl_led_brightness_set;
188 priv->led.blink_set = iwl_led_blink_set;
189 priv->led.max_brightness = 1;
190
191 switch (mode) {
192 case IWL_LED_DEFAULT:
193 WARN_ON(1);
194 break;
195 case IWL_LED_BLINK:
196 priv->led.default_trigger =
197 ieee80211_create_tpt_led_trigger(priv->hw,
198 IEEE80211_TPT_LEDTRIG_FL_CONNECTED,
199 iwl_blink, ARRAY_SIZE(iwl_blink));
200 break;
201 case IWL_LED_RF_STATE:
202 priv->led.default_trigger =
203 ieee80211_get_radio_led_name(priv->hw);
204 break;
205 }
206
207 ret = led_classdev_register(priv->trans->dev, &priv->led);
208 if (ret) {
209 kfree(priv->led.name);
210 return;
211 }
212
213 priv->led_registered = true;
214}
215
216void iwl_leds_exit(struct iwl_priv *priv)
217{
218 if (!priv->led_registered)
219 return;
220
221 led_classdev_unregister(&priv->led);
222 kfree(priv->led.name);
223}
224