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5da4b55f MA |
1 | /****************************************************************************** |
2 | * | |
01f8162a | 3 | * Copyright(c) 2007 - 2009 Intel Corporation. All rights reserved. |
5da4b55f MA |
4 | * |
5 | * Portions of this file are derived from the ipw3945 project, as well | |
6 | * as portions of the ieee80211 subsystem header files. | |
7 | * | |
8 | * This program is free software; you can redistribute it and/or modify it | |
9 | * under the terms of version 2 of the GNU General Public License as | |
10 | * published by the Free Software Foundation. | |
11 | * | |
12 | * This program is distributed in the hope that it will be useful, but WITHOUT | |
13 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
14 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for | |
15 | * more details. | |
16 | * | |
17 | * You should have received a copy of the GNU General Public License along with | |
18 | * this program; if not, write to the Free Software Foundation, Inc., | |
19 | * 51 Franklin Street, Fifth Floor, Boston, MA 02110, USA | |
20 | * | |
21 | * The full GNU General Public License is included in this distribution in the | |
22 | * file called LICENSE. | |
23 | * | |
24 | * Contact Information: | |
759ef89f | 25 | * Intel Linux Wireless <ilw@linux.intel.com> |
5da4b55f MA |
26 | * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497 |
27 | *****************************************************************************/ | |
28 | ||
29 | ||
30 | #include <linux/kernel.h> | |
31 | #include <linux/module.h> | |
5da4b55f MA |
32 | #include <linux/init.h> |
33 | ||
34 | #include <net/mac80211.h> | |
35 | ||
36 | #include "iwl-eeprom.h" | |
3e0d4cb1 | 37 | #include "iwl-dev.h" |
5da4b55f | 38 | #include "iwl-core.h" |
5a36ba0e | 39 | #include "iwl-commands.h" |
5da4b55f MA |
40 | #include "iwl-debug.h" |
41 | #include "iwl-power.h" | |
5da4b55f MA |
42 | |
43 | /* | |
44 | * Setting power level allow the card to go to sleep when not busy | |
45 | * there are three factor that decide the power level to go to, they | |
46 | * are list here with its priority | |
47 | * 1- critical_power_setting this will be set according to card temperature. | |
48 | * 2- system_power_setting this will be set by system PM manager. | |
49 | * 3- user_power_setting this will be set by user either by writing to sys or | |
50 | * mac80211 | |
51 | * | |
52 | * if system_power_setting and user_power_setting is set to auto | |
53 | * the power level will be decided according to association status and battery | |
54 | * status. | |
55 | * | |
56 | */ | |
57 | ||
58 | #define MSEC_TO_USEC 1024 | |
59 | #define IWL_POWER_RANGE_0_MAX (2) | |
60 | #define IWL_POWER_RANGE_1_MAX (10) | |
61 | ||
62 | ||
5da4b55f MA |
63 | |
64 | #define IWL_POWER_ON_BATTERY IWL_POWER_INDEX_5 | |
65 | #define IWL_POWER_ON_AC_DISASSOC IWL_POWER_MODE_CAM | |
66 | #define IWL_POWER_ON_AC_ASSOC IWL_POWER_MODE_CAM | |
67 | ||
68 | ||
69 | #define IWL_CT_KILL_TEMPERATURE 110 | |
70 | #define IWL_MIN_POWER_TEMPERATURE 100 | |
71 | #define IWL_REDUCED_POWER_TEMPERATURE 95 | |
72 | ||
73 | /* default power management (not Tx power) table values */ | |
a96a27f9 | 74 | /* for TIM 0-10 */ |
298df1f6 | 75 | static struct iwl_power_vec_entry range_0[IWL_POWER_MAX] = { |
5da4b55f MA |
76 | {{NOSLP, SLP_TOUT(0), SLP_TOUT(0), SLP_VEC(0, 0, 0, 0, 0)}, 0}, |
77 | {{SLP, SLP_TOUT(200), SLP_TOUT(500), SLP_VEC(1, 2, 2, 2, 0xFF)}, 0}, | |
78 | {{SLP, SLP_TOUT(200), SLP_TOUT(300), SLP_VEC(1, 2, 2, 2, 0xFF)}, 0}, | |
79 | {{SLP, SLP_TOUT(50), SLP_TOUT(100), SLP_VEC(2, 2, 2, 2, 0xFF)}, 0}, | |
80 | {{SLP, SLP_TOUT(50), SLP_TOUT(25), SLP_VEC(2, 2, 4, 4, 0xFF)}, 1}, | |
81 | {{SLP, SLP_TOUT(25), SLP_TOUT(25), SLP_VEC(2, 2, 4, 6, 0xFF)}, 2} | |
82 | }; | |
83 | ||
84 | ||
a96a27f9 | 85 | /* for TIM = 3-10 */ |
298df1f6 | 86 | static struct iwl_power_vec_entry range_1[IWL_POWER_MAX] = { |
5da4b55f MA |
87 | {{NOSLP, SLP_TOUT(0), SLP_TOUT(0), SLP_VEC(0, 0, 0, 0, 0)}, 0}, |
88 | {{SLP, SLP_TOUT(200), SLP_TOUT(500), SLP_VEC(1, 2, 3, 4, 4)}, 0}, | |
89 | {{SLP, SLP_TOUT(200), SLP_TOUT(300), SLP_VEC(1, 2, 3, 4, 7)}, 0}, | |
90 | {{SLP, SLP_TOUT(50), SLP_TOUT(100), SLP_VEC(2, 4, 6, 7, 9)}, 0}, | |
91 | {{SLP, SLP_TOUT(50), SLP_TOUT(25), SLP_VEC(2, 4, 6, 9, 10)}, 1}, | |
92 | {{SLP, SLP_TOUT(25), SLP_TOUT(25), SLP_VEC(2, 4, 7, 10, 10)}, 2} | |
93 | }; | |
94 | ||
a96a27f9 | 95 | /* for TIM > 11 */ |
298df1f6 | 96 | static struct iwl_power_vec_entry range_2[IWL_POWER_MAX] = { |
5da4b55f MA |
97 | {{NOSLP, SLP_TOUT(0), SLP_TOUT(0), SLP_VEC(0, 0, 0, 0, 0)}, 0}, |
98 | {{SLP, SLP_TOUT(200), SLP_TOUT(500), SLP_VEC(1, 2, 3, 4, 0xFF)}, 0}, | |
99 | {{SLP, SLP_TOUT(200), SLP_TOUT(300), SLP_VEC(2, 4, 6, 7, 0xFF)}, 0}, | |
100 | {{SLP, SLP_TOUT(50), SLP_TOUT(100), SLP_VEC(2, 7, 9, 9, 0xFF)}, 0}, | |
101 | {{SLP, SLP_TOUT(50), SLP_TOUT(25), SLP_VEC(2, 7, 9, 9, 0xFF)}, 0}, | |
102 | {{SLP, SLP_TOUT(25), SLP_TOUT(25), SLP_VEC(4, 7, 10, 10, 0xFF)}, 0} | |
103 | }; | |
104 | ||
d25aabb0 | 105 | |
ca579617 MA |
106 | /* set card power command */ |
107 | static int iwl_set_power(struct iwl_priv *priv, void *cmd) | |
108 | { | |
f0f74a0e JB |
109 | return iwl_send_cmd_pdu(priv, POWER_TABLE_CMD, |
110 | sizeof(struct iwl_powertable_cmd), cmd); | |
ca579617 | 111 | } |
5da4b55f MA |
112 | /* decide the right power level according to association status |
113 | * and battery status | |
114 | */ | |
115 | static u16 iwl_get_auto_power_mode(struct iwl_priv *priv) | |
116 | { | |
298df1f6 | 117 | u16 mode; |
5da4b55f MA |
118 | |
119 | switch (priv->power_data.user_power_setting) { | |
120 | case IWL_POWER_AUTO: | |
121 | /* if running on battery */ | |
122 | if (priv->power_data.is_battery_active) | |
123 | mode = IWL_POWER_ON_BATTERY; | |
124 | else if (iwl_is_associated(priv)) | |
125 | mode = IWL_POWER_ON_AC_ASSOC; | |
126 | else | |
127 | mode = IWL_POWER_ON_AC_DISASSOC; | |
128 | break; | |
298df1f6 EK |
129 | default: |
130 | mode = priv->power_data.user_power_setting; | |
131 | break; | |
5da4b55f MA |
132 | } |
133 | return mode; | |
134 | } | |
135 | ||
136 | /* initialize to default */ | |
5cd19c5f | 137 | static void iwl_power_init_handle(struct iwl_priv *priv) |
5da4b55f | 138 | { |
5da4b55f | 139 | struct iwl_power_mgr *pow_data; |
298df1f6 | 140 | int size = sizeof(struct iwl_power_vec_entry) * IWL_POWER_MAX; |
e7b63581 TW |
141 | struct iwl_powertable_cmd *cmd; |
142 | int i; | |
3fdb68de | 143 | u16 lctl; |
5da4b55f | 144 | |
e1623446 | 145 | IWL_DEBUG_POWER(priv, "Initialize power \n"); |
5da4b55f | 146 | |
5cd19c5f | 147 | pow_data = &priv->power_data; |
5da4b55f MA |
148 | |
149 | memset(pow_data, 0, sizeof(*pow_data)); | |
150 | ||
151 | memcpy(&pow_data->pwr_range_0[0], &range_0[0], size); | |
152 | memcpy(&pow_data->pwr_range_1[0], &range_1[0], size); | |
153 | memcpy(&pow_data->pwr_range_2[0], &range_2[0], size); | |
154 | ||
3fdb68de | 155 | lctl = iwl_pcie_link_ctl(priv); |
5da4b55f | 156 | |
e1623446 | 157 | IWL_DEBUG_POWER(priv, "adjust power command flags\n"); |
5da4b55f | 158 | |
e7b63581 TW |
159 | for (i = 0; i < IWL_POWER_MAX; i++) { |
160 | cmd = &pow_data->pwr_range_0[i].cmd; | |
5da4b55f | 161 | |
3fdb68de | 162 | if (lctl & PCI_CFG_LINK_CTRL_VAL_L0S_EN) |
e7b63581 TW |
163 | cmd->flags &= ~IWL_POWER_PCI_PM_MSK; |
164 | else | |
165 | cmd->flags |= IWL_POWER_PCI_PM_MSK; | |
5da4b55f | 166 | } |
5da4b55f MA |
167 | } |
168 | ||
a96a27f9 | 169 | /* adjust power command according to DTIM period and power level*/ |
5cd19c5f WT |
170 | static int iwl_update_power_cmd(struct iwl_priv *priv, |
171 | struct iwl_powertable_cmd *cmd, u16 mode) | |
5da4b55f | 172 | { |
5da4b55f | 173 | struct iwl_power_vec_entry *range; |
5da4b55f | 174 | struct iwl_power_mgr *pow_data; |
5cd19c5f WT |
175 | int i; |
176 | u32 max_sleep = 0; | |
177 | u8 period; | |
178 | bool skip; | |
5da4b55f MA |
179 | |
180 | if (mode > IWL_POWER_INDEX_5) { | |
e1623446 | 181 | IWL_DEBUG_POWER(priv, "Error invalid power mode \n"); |
5cd19c5f | 182 | return -EINVAL; |
5da4b55f | 183 | } |
5cd19c5f WT |
184 | |
185 | pow_data = &priv->power_data; | |
5da4b55f MA |
186 | |
187 | if (pow_data->dtim_period <= IWL_POWER_RANGE_0_MAX) | |
188 | range = &pow_data->pwr_range_0[0]; | |
189 | else if (pow_data->dtim_period <= IWL_POWER_RANGE_1_MAX) | |
190 | range = &pow_data->pwr_range_1[0]; | |
191 | else | |
192 | range = &pow_data->pwr_range_2[0]; | |
193 | ||
194 | period = pow_data->dtim_period; | |
ca579617 | 195 | memcpy(cmd, &range[mode].cmd, sizeof(struct iwl_powertable_cmd)); |
5da4b55f MA |
196 | |
197 | if (period == 0) { | |
198 | period = 1; | |
5cd19c5f | 199 | skip = false; |
5da4b55f | 200 | } else { |
5cd19c5f WT |
201 | skip = !!range[mode].no_dtim; |
202 | } | |
203 | ||
204 | if (skip) { | |
5da4b55f MA |
205 | __le32 slp_itrvl = cmd->sleep_interval[IWL_POWER_VEC_SIZE - 1]; |
206 | max_sleep = le32_to_cpu(slp_itrvl); | |
207 | if (max_sleep == 0xFF) | |
208 | max_sleep = period * (skip + 1); | |
209 | else if (max_sleep > period) | |
210 | max_sleep = (le32_to_cpu(slp_itrvl) / period) * period; | |
211 | cmd->flags |= IWL_POWER_SLEEP_OVER_DTIM_MSK; | |
5cd19c5f WT |
212 | } else { |
213 | max_sleep = period; | |
214 | cmd->flags &= ~IWL_POWER_SLEEP_OVER_DTIM_MSK; | |
5da4b55f MA |
215 | } |
216 | ||
5cd19c5f | 217 | for (i = 0; i < IWL_POWER_VEC_SIZE; i++) |
5da4b55f MA |
218 | if (le32_to_cpu(cmd->sleep_interval[i]) > max_sleep) |
219 | cmd->sleep_interval[i] = cpu_to_le32(max_sleep); | |
5da4b55f | 220 | |
e1623446 TW |
221 | IWL_DEBUG_POWER(priv, "Flags value = 0x%08X\n", cmd->flags); |
222 | IWL_DEBUG_POWER(priv, "Tx timeout = %u\n", le32_to_cpu(cmd->tx_data_timeout)); | |
223 | IWL_DEBUG_POWER(priv, "Rx timeout = %u\n", le32_to_cpu(cmd->rx_data_timeout)); | |
224 | IWL_DEBUG_POWER(priv, "Sleep interval vector = { %d , %d , %d , %d , %d }\n", | |
5da4b55f MA |
225 | le32_to_cpu(cmd->sleep_interval[0]), |
226 | le32_to_cpu(cmd->sleep_interval[1]), | |
227 | le32_to_cpu(cmd->sleep_interval[2]), | |
228 | le32_to_cpu(cmd->sleep_interval[3]), | |
229 | le32_to_cpu(cmd->sleep_interval[4])); | |
230 | ||
5cd19c5f | 231 | return 0; |
5da4b55f MA |
232 | } |
233 | ||
234 | ||
235 | /* | |
a33c2f47 | 236 | * compute the final power mode index |
5da4b55f | 237 | */ |
04816448 | 238 | int iwl_power_update_mode(struct iwl_priv *priv, bool force) |
5da4b55f MA |
239 | { |
240 | struct iwl_power_mgr *setting = &(priv->power_data); | |
241 | int ret = 0; | |
242 | u16 uninitialized_var(final_mode); | |
a71c8f62 | 243 | bool update_chains; |
5da4b55f | 244 | |
04816448 | 245 | /* Don't update the RX chain when chain noise calibration is running */ |
a71c8f62 WT |
246 | update_chains = priv->chain_noise_data.state == IWL_CHAIN_NOISE_DONE || |
247 | priv->chain_noise_data.state == IWL_CHAIN_NOISE_ALIVE; | |
04816448 | 248 | |
a33c2f47 EG |
249 | /* If on battery, set to 3, |
250 | * if plugged into AC power, set to CAM ("continuously aware mode"), | |
251 | * else user level */ | |
5da4b55f MA |
252 | |
253 | switch (setting->system_power_setting) { | |
298df1f6 | 254 | case IWL_POWER_SYS_AUTO: |
5da4b55f MA |
255 | final_mode = iwl_get_auto_power_mode(priv); |
256 | break; | |
298df1f6 | 257 | case IWL_POWER_SYS_BATTERY: |
5da4b55f MA |
258 | final_mode = IWL_POWER_INDEX_3; |
259 | break; | |
298df1f6 | 260 | case IWL_POWER_SYS_AC: |
5da4b55f MA |
261 | final_mode = IWL_POWER_MODE_CAM; |
262 | break; | |
263 | default: | |
298df1f6 EK |
264 | final_mode = IWL_POWER_INDEX_3; |
265 | WARN_ON(1); | |
5da4b55f MA |
266 | } |
267 | ||
268 | if (setting->critical_power_setting > final_mode) | |
269 | final_mode = setting->critical_power_setting; | |
270 | ||
271 | /* driver only support CAM for non STA network */ | |
05c914fe | 272 | if (priv->iw_mode != NL80211_IFTYPE_STATION) |
5da4b55f MA |
273 | final_mode = IWL_POWER_MODE_CAM; |
274 | ||
28c60875 | 275 | if (iwl_is_ready_rf(priv) && !setting->power_disabled && |
04816448 | 276 | ((setting->power_mode != final_mode) || force)) { |
ca579617 | 277 | struct iwl_powertable_cmd cmd; |
5da4b55f MA |
278 | |
279 | if (final_mode != IWL_POWER_MODE_CAM) | |
280 | set_bit(STATUS_POWER_PMI, &priv->status); | |
281 | ||
5cd19c5f | 282 | iwl_update_power_cmd(priv, &cmd, final_mode); |
5da4b55f MA |
283 | cmd.keep_alive_beacons = 0; |
284 | ||
285 | if (final_mode == IWL_POWER_INDEX_5) | |
286 | cmd.flags |= IWL_POWER_FAST_PD; | |
287 | ||
ca579617 | 288 | ret = iwl_set_power(priv, &cmd); |
5da4b55f MA |
289 | |
290 | if (final_mode == IWL_POWER_MODE_CAM) | |
291 | clear_bit(STATUS_POWER_PMI, &priv->status); | |
292 | else | |
293 | set_bit(STATUS_POWER_PMI, &priv->status); | |
294 | ||
a71c8f62 | 295 | if (priv->cfg->ops->lib->update_chain_flags && update_chains) |
5da4b55f | 296 | priv->cfg->ops->lib->update_chain_flags(priv); |
a71c8f62 | 297 | else |
e1623446 | 298 | IWL_DEBUG_POWER(priv, "Cannot update the power, chain noise " |
a71c8f62 WT |
299 | "calibration running: %d\n", |
300 | priv->chain_noise_data.state); | |
5da4b55f MA |
301 | if (!ret) |
302 | setting->power_mode = final_mode; | |
303 | } | |
304 | ||
305 | return ret; | |
306 | } | |
307 | EXPORT_SYMBOL(iwl_power_update_mode); | |
308 | ||
309 | /* Allow other iwl code to disable/enable power management active | |
a96a27f9 | 310 | * this will be useful for rate scale to disable PM during heavy |
5da4b55f MA |
311 | * Tx/Rx activities |
312 | */ | |
c90a74ba | 313 | int iwl_power_disable_management(struct iwl_priv *priv, u32 ms) |
5da4b55f MA |
314 | { |
315 | u16 prev_mode; | |
316 | int ret = 0; | |
317 | ||
318 | if (priv->power_data.power_disabled) | |
319 | return -EBUSY; | |
320 | ||
321 | prev_mode = priv->power_data.user_power_setting; | |
322 | priv->power_data.user_power_setting = IWL_POWER_MODE_CAM; | |
323 | ret = iwl_power_update_mode(priv, 0); | |
324 | priv->power_data.power_disabled = 1; | |
325 | priv->power_data.user_power_setting = prev_mode; | |
c90a74ba EG |
326 | cancel_delayed_work(&priv->set_power_save); |
327 | if (ms) | |
328 | queue_delayed_work(priv->workqueue, &priv->set_power_save, | |
329 | msecs_to_jiffies(ms)); | |
330 | ||
5da4b55f MA |
331 | |
332 | return ret; | |
333 | } | |
334 | EXPORT_SYMBOL(iwl_power_disable_management); | |
335 | ||
336 | /* Allow other iwl code to disable/enable power management active | |
a96a27f9 TW |
337 | * this will be useful for rate scale to disable PM during high |
338 | * volume activities | |
5da4b55f MA |
339 | */ |
340 | int iwl_power_enable_management(struct iwl_priv *priv) | |
341 | { | |
342 | int ret = 0; | |
343 | ||
344 | priv->power_data.power_disabled = 0; | |
345 | ret = iwl_power_update_mode(priv, 0); | |
346 | return ret; | |
347 | } | |
348 | EXPORT_SYMBOL(iwl_power_enable_management); | |
349 | ||
350 | /* set user_power_setting */ | |
351 | int iwl_power_set_user_mode(struct iwl_priv *priv, u16 mode) | |
352 | { | |
d25aabb0 | 353 | if (mode > IWL_POWER_MAX) |
5da4b55f MA |
354 | return -EINVAL; |
355 | ||
356 | priv->power_data.user_power_setting = mode; | |
357 | ||
04816448 | 358 | return iwl_power_update_mode(priv, 0); |
5da4b55f MA |
359 | } |
360 | EXPORT_SYMBOL(iwl_power_set_user_mode); | |
361 | ||
5da4b55f MA |
362 | /* set system_power_setting. This should be set by over all |
363 | * PM application. | |
364 | */ | |
365 | int iwl_power_set_system_mode(struct iwl_priv *priv, u16 mode) | |
366 | { | |
d25aabb0 WT |
367 | if (mode < IWL_POWER_SYS_MAX) |
368 | priv->power_data.system_power_setting = mode; | |
369 | else | |
5da4b55f | 370 | return -EINVAL; |
04816448 | 371 | return iwl_power_update_mode(priv, 0); |
5da4b55f MA |
372 | } |
373 | EXPORT_SYMBOL(iwl_power_set_system_mode); | |
374 | ||
a96a27f9 | 375 | /* initialize to default */ |
5da4b55f MA |
376 | void iwl_power_initialize(struct iwl_priv *priv) |
377 | { | |
5da4b55f MA |
378 | iwl_power_init_handle(priv); |
379 | priv->power_data.user_power_setting = IWL_POWER_AUTO; | |
298df1f6 | 380 | priv->power_data.system_power_setting = IWL_POWER_SYS_AUTO; |
5da4b55f | 381 | priv->power_data.power_disabled = 0; |
5cd19c5f | 382 | priv->power_data.is_battery_active = 0; |
5da4b55f MA |
383 | priv->power_data.critical_power_setting = 0; |
384 | } | |
385 | EXPORT_SYMBOL(iwl_power_initialize); | |
386 | ||
387 | /* set critical_power_setting according to temperature value */ | |
388 | int iwl_power_temperature_change(struct iwl_priv *priv) | |
389 | { | |
390 | int ret = 0; | |
5da4b55f | 391 | s32 temperature = KELVIN_TO_CELSIUS(priv->last_temperature); |
5cd19c5f | 392 | u16 new_critical = priv->power_data.critical_power_setting; |
5da4b55f MA |
393 | |
394 | if (temperature > IWL_CT_KILL_TEMPERATURE) | |
395 | return 0; | |
396 | else if (temperature > IWL_MIN_POWER_TEMPERATURE) | |
397 | new_critical = IWL_POWER_INDEX_5; | |
398 | else if (temperature > IWL_REDUCED_POWER_TEMPERATURE) | |
399 | new_critical = IWL_POWER_INDEX_3; | |
400 | else | |
401 | new_critical = IWL_POWER_MODE_CAM; | |
402 | ||
403 | if (new_critical != priv->power_data.critical_power_setting) | |
404 | priv->power_data.critical_power_setting = new_critical; | |
405 | ||
406 | if (priv->power_data.critical_power_setting > | |
407 | priv->power_data.power_mode) | |
408 | ret = iwl_power_update_mode(priv, 0); | |
409 | ||
410 | return ret; | |
411 | } | |
412 | EXPORT_SYMBOL(iwl_power_temperature_change); | |
c90a74ba EG |
413 | |
414 | static void iwl_bg_set_power_save(struct work_struct *work) | |
415 | { | |
416 | struct iwl_priv *priv = container_of(work, | |
417 | struct iwl_priv, set_power_save.work); | |
e1623446 | 418 | IWL_DEBUG_POWER(priv, "update power\n"); |
c90a74ba EG |
419 | |
420 | if (test_bit(STATUS_EXIT_PENDING, &priv->status)) | |
421 | return; | |
422 | ||
423 | mutex_lock(&priv->mutex); | |
424 | ||
a96a27f9 | 425 | /* on starting association we disable power management |
c90a74ba EG |
426 | * until association, if association failed then this |
427 | * timer will expire and enable PM again. | |
428 | */ | |
429 | if (!iwl_is_associated(priv)) | |
430 | iwl_power_enable_management(priv); | |
431 | ||
432 | mutex_unlock(&priv->mutex); | |
433 | } | |
434 | void iwl_setup_power_deferred_work(struct iwl_priv *priv) | |
435 | { | |
436 | INIT_DELAYED_WORK(&priv->set_power_save, iwl_bg_set_power_save); | |
437 | } | |
438 | EXPORT_SYMBOL(iwl_setup_power_deferred_work); | |
439 | ||
440 | void iwl_power_cancel_timeout(struct iwl_priv *priv) | |
441 | { | |
442 | cancel_delayed_work(&priv->set_power_save); | |
443 | } | |
444 | EXPORT_SYMBOL(iwl_power_cancel_timeout); |