Mohamed Abbas | 5da4b55f | 2008-04-21 15:41:51 -0700 | [diff] [blame] | 1 | /****************************************************************************** |
| 2 | * |
| 3 | * Copyright(c) 2007 - 2008 Intel Corporation. All rights reserved. |
| 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: |
| 25 | * James P. Ketrenos <ipw2100-admin@linux.intel.com> |
| 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> |
Mohamed Abbas | 5da4b55f | 2008-04-21 15:41:51 -0700 | [diff] [blame] | 32 | #include <linux/init.h> |
| 33 | |
| 34 | #include <net/mac80211.h> |
| 35 | |
| 36 | #include "iwl-eeprom.h" |
Tomas Winkler | 3e0d4cb | 2008-04-24 11:55:38 -0700 | [diff] [blame] | 37 | #include "iwl-dev.h" |
Mohamed Abbas | 5da4b55f | 2008-04-21 15:41:51 -0700 | [diff] [blame] | 38 | #include "iwl-core.h" |
Tomas Winkler | 5a36ba0 | 2008-04-24 11:55:37 -0700 | [diff] [blame] | 39 | #include "iwl-commands.h" |
Mohamed Abbas | 5da4b55f | 2008-04-21 15:41:51 -0700 | [diff] [blame] | 40 | #include "iwl-debug.h" |
| 41 | #include "iwl-power.h" |
| 42 | #include "iwl-helpers.h" |
| 43 | |
| 44 | /* |
| 45 | * Setting power level allow the card to go to sleep when not busy |
| 46 | * there are three factor that decide the power level to go to, they |
| 47 | * are list here with its priority |
| 48 | * 1- critical_power_setting this will be set according to card temperature. |
| 49 | * 2- system_power_setting this will be set by system PM manager. |
| 50 | * 3- user_power_setting this will be set by user either by writing to sys or |
| 51 | * mac80211 |
| 52 | * |
| 53 | * if system_power_setting and user_power_setting is set to auto |
| 54 | * the power level will be decided according to association status and battery |
| 55 | * status. |
| 56 | * |
| 57 | */ |
| 58 | |
| 59 | #define MSEC_TO_USEC 1024 |
| 60 | #define IWL_POWER_RANGE_0_MAX (2) |
| 61 | #define IWL_POWER_RANGE_1_MAX (10) |
| 62 | |
| 63 | |
| 64 | #define NOSLP __constant_cpu_to_le16(0), 0, 0 |
| 65 | #define SLP IWL_POWER_DRIVER_ALLOW_SLEEP_MSK, 0, 0 |
| 66 | #define SLP_TOUT(T) __constant_cpu_to_le32((T) * MSEC_TO_USEC) |
| 67 | #define SLP_VEC(X0, X1, X2, X3, X4) {__constant_cpu_to_le32(X0), \ |
| 68 | __constant_cpu_to_le32(X1), \ |
| 69 | __constant_cpu_to_le32(X2), \ |
| 70 | __constant_cpu_to_le32(X3), \ |
| 71 | __constant_cpu_to_le32(X4)} |
| 72 | |
| 73 | #define IWL_POWER_ON_BATTERY IWL_POWER_INDEX_5 |
| 74 | #define IWL_POWER_ON_AC_DISASSOC IWL_POWER_MODE_CAM |
| 75 | #define IWL_POWER_ON_AC_ASSOC IWL_POWER_MODE_CAM |
| 76 | |
| 77 | |
| 78 | #define IWL_CT_KILL_TEMPERATURE 110 |
| 79 | #define IWL_MIN_POWER_TEMPERATURE 100 |
| 80 | #define IWL_REDUCED_POWER_TEMPERATURE 95 |
| 81 | |
| 82 | /* default power management (not Tx power) table values */ |
| 83 | /* for tim 0-10 */ |
Esti Kummer | 298df1f | 2008-07-18 13:52:58 +0800 | [diff] [blame] | 84 | static struct iwl_power_vec_entry range_0[IWL_POWER_MAX] = { |
Mohamed Abbas | 5da4b55f | 2008-04-21 15:41:51 -0700 | [diff] [blame] | 85 | {{NOSLP, SLP_TOUT(0), SLP_TOUT(0), SLP_VEC(0, 0, 0, 0, 0)}, 0}, |
| 86 | {{SLP, SLP_TOUT(200), SLP_TOUT(500), SLP_VEC(1, 2, 2, 2, 0xFF)}, 0}, |
| 87 | {{SLP, SLP_TOUT(200), SLP_TOUT(300), SLP_VEC(1, 2, 2, 2, 0xFF)}, 0}, |
| 88 | {{SLP, SLP_TOUT(50), SLP_TOUT(100), SLP_VEC(2, 2, 2, 2, 0xFF)}, 0}, |
| 89 | {{SLP, SLP_TOUT(50), SLP_TOUT(25), SLP_VEC(2, 2, 4, 4, 0xFF)}, 1}, |
| 90 | {{SLP, SLP_TOUT(25), SLP_TOUT(25), SLP_VEC(2, 2, 4, 6, 0xFF)}, 2} |
| 91 | }; |
| 92 | |
| 93 | |
| 94 | /* for tim = 3-10 */ |
Esti Kummer | 298df1f | 2008-07-18 13:52:58 +0800 | [diff] [blame] | 95 | static struct iwl_power_vec_entry range_1[IWL_POWER_MAX] = { |
Mohamed Abbas | 5da4b55f | 2008-04-21 15:41:51 -0700 | [diff] [blame] | 96 | {{NOSLP, SLP_TOUT(0), SLP_TOUT(0), SLP_VEC(0, 0, 0, 0, 0)}, 0}, |
| 97 | {{SLP, SLP_TOUT(200), SLP_TOUT(500), SLP_VEC(1, 2, 3, 4, 4)}, 0}, |
| 98 | {{SLP, SLP_TOUT(200), SLP_TOUT(300), SLP_VEC(1, 2, 3, 4, 7)}, 0}, |
| 99 | {{SLP, SLP_TOUT(50), SLP_TOUT(100), SLP_VEC(2, 4, 6, 7, 9)}, 0}, |
| 100 | {{SLP, SLP_TOUT(50), SLP_TOUT(25), SLP_VEC(2, 4, 6, 9, 10)}, 1}, |
| 101 | {{SLP, SLP_TOUT(25), SLP_TOUT(25), SLP_VEC(2, 4, 7, 10, 10)}, 2} |
| 102 | }; |
| 103 | |
| 104 | /* for tim > 11 */ |
Esti Kummer | 298df1f | 2008-07-18 13:52:58 +0800 | [diff] [blame] | 105 | static struct iwl_power_vec_entry range_2[IWL_POWER_MAX] = { |
Mohamed Abbas | 5da4b55f | 2008-04-21 15:41:51 -0700 | [diff] [blame] | 106 | {{NOSLP, SLP_TOUT(0), SLP_TOUT(0), SLP_VEC(0, 0, 0, 0, 0)}, 0}, |
| 107 | {{SLP, SLP_TOUT(200), SLP_TOUT(500), SLP_VEC(1, 2, 3, 4, 0xFF)}, 0}, |
| 108 | {{SLP, SLP_TOUT(200), SLP_TOUT(300), SLP_VEC(2, 4, 6, 7, 0xFF)}, 0}, |
| 109 | {{SLP, SLP_TOUT(50), SLP_TOUT(100), SLP_VEC(2, 7, 9, 9, 0xFF)}, 0}, |
| 110 | {{SLP, SLP_TOUT(50), SLP_TOUT(25), SLP_VEC(2, 7, 9, 9, 0xFF)}, 0}, |
| 111 | {{SLP, SLP_TOUT(25), SLP_TOUT(25), SLP_VEC(4, 7, 10, 10, 0xFF)}, 0} |
| 112 | }; |
| 113 | |
Mohamed Abbas | ca57961 | 2008-07-18 13:52:57 +0800 | [diff] [blame] | 114 | /* set card power command */ |
| 115 | static int iwl_set_power(struct iwl_priv *priv, void *cmd) |
| 116 | { |
| 117 | return iwl_send_cmd_pdu_async(priv, POWER_TABLE_CMD, |
| 118 | sizeof(struct iwl_powertable_cmd), |
| 119 | cmd, NULL); |
| 120 | } |
Mohamed Abbas | 5da4b55f | 2008-04-21 15:41:51 -0700 | [diff] [blame] | 121 | /* decide the right power level according to association status |
| 122 | * and battery status |
| 123 | */ |
| 124 | static u16 iwl_get_auto_power_mode(struct iwl_priv *priv) |
| 125 | { |
Esti Kummer | 298df1f | 2008-07-18 13:52:58 +0800 | [diff] [blame] | 126 | u16 mode; |
Mohamed Abbas | 5da4b55f | 2008-04-21 15:41:51 -0700 | [diff] [blame] | 127 | |
| 128 | switch (priv->power_data.user_power_setting) { |
| 129 | case IWL_POWER_AUTO: |
| 130 | /* if running on battery */ |
| 131 | if (priv->power_data.is_battery_active) |
| 132 | mode = IWL_POWER_ON_BATTERY; |
| 133 | else if (iwl_is_associated(priv)) |
| 134 | mode = IWL_POWER_ON_AC_ASSOC; |
| 135 | else |
| 136 | mode = IWL_POWER_ON_AC_DISASSOC; |
| 137 | break; |
Esti Kummer | 298df1f | 2008-07-18 13:52:58 +0800 | [diff] [blame] | 138 | /* FIXME: remove battery and ac from here */ |
Mohamed Abbas | 5da4b55f | 2008-04-21 15:41:51 -0700 | [diff] [blame] | 139 | case IWL_POWER_BATTERY: |
| 140 | mode = IWL_POWER_INDEX_3; |
| 141 | break; |
| 142 | case IWL_POWER_AC: |
| 143 | mode = IWL_POWER_MODE_CAM; |
| 144 | break; |
Esti Kummer | 298df1f | 2008-07-18 13:52:58 +0800 | [diff] [blame] | 145 | default: |
| 146 | mode = priv->power_data.user_power_setting; |
| 147 | break; |
Mohamed Abbas | 5da4b55f | 2008-04-21 15:41:51 -0700 | [diff] [blame] | 148 | } |
| 149 | return mode; |
| 150 | } |
| 151 | |
| 152 | /* initialize to default */ |
| 153 | static int iwl_power_init_handle(struct iwl_priv *priv) |
| 154 | { |
| 155 | int ret = 0, i; |
| 156 | struct iwl_power_mgr *pow_data; |
Esti Kummer | 298df1f | 2008-07-18 13:52:58 +0800 | [diff] [blame] | 157 | int size = sizeof(struct iwl_power_vec_entry) * IWL_POWER_MAX; |
Mohamed Abbas | 5da4b55f | 2008-04-21 15:41:51 -0700 | [diff] [blame] | 158 | u16 pci_pm; |
| 159 | |
| 160 | IWL_DEBUG_POWER("Initialize power \n"); |
| 161 | |
| 162 | pow_data = &(priv->power_data); |
| 163 | |
| 164 | memset(pow_data, 0, sizeof(*pow_data)); |
| 165 | |
| 166 | memcpy(&pow_data->pwr_range_0[0], &range_0[0], size); |
| 167 | memcpy(&pow_data->pwr_range_1[0], &range_1[0], size); |
| 168 | memcpy(&pow_data->pwr_range_2[0], &range_2[0], size); |
| 169 | |
| 170 | ret = pci_read_config_word(priv->pci_dev, |
| 171 | PCI_LINK_CTRL, &pci_pm); |
| 172 | if (ret != 0) |
| 173 | return 0; |
| 174 | else { |
Mohamed Abbas | ca57961 | 2008-07-18 13:52:57 +0800 | [diff] [blame] | 175 | struct iwl_powertable_cmd *cmd; |
Mohamed Abbas | 5da4b55f | 2008-04-21 15:41:51 -0700 | [diff] [blame] | 176 | |
| 177 | IWL_DEBUG_POWER("adjust power command flags\n"); |
| 178 | |
Esti Kummer | 298df1f | 2008-07-18 13:52:58 +0800 | [diff] [blame] | 179 | for (i = 0; i < IWL_POWER_MAX; i++) { |
Mohamed Abbas | 5da4b55f | 2008-04-21 15:41:51 -0700 | [diff] [blame] | 180 | cmd = &pow_data->pwr_range_0[i].cmd; |
| 181 | |
| 182 | if (pci_pm & 0x1) |
| 183 | cmd->flags &= ~IWL_POWER_PCI_PM_MSK; |
| 184 | else |
| 185 | cmd->flags |= IWL_POWER_PCI_PM_MSK; |
| 186 | } |
| 187 | } |
| 188 | return ret; |
| 189 | } |
| 190 | |
| 191 | /* adjust power command according to dtim period and power level*/ |
| 192 | static int iwl_update_power_command(struct iwl_priv *priv, |
Mohamed Abbas | ca57961 | 2008-07-18 13:52:57 +0800 | [diff] [blame] | 193 | struct iwl_powertable_cmd *cmd, |
Mohamed Abbas | 5da4b55f | 2008-04-21 15:41:51 -0700 | [diff] [blame] | 194 | u16 mode) |
| 195 | { |
| 196 | int ret = 0, i; |
| 197 | u8 skip; |
| 198 | u32 max_sleep = 0; |
| 199 | struct iwl_power_vec_entry *range; |
| 200 | u8 period = 0; |
| 201 | struct iwl_power_mgr *pow_data; |
| 202 | |
| 203 | if (mode > IWL_POWER_INDEX_5) { |
| 204 | IWL_DEBUG_POWER("Error invalid power mode \n"); |
| 205 | return -1; |
| 206 | } |
| 207 | pow_data = &(priv->power_data); |
| 208 | |
| 209 | if (pow_data->dtim_period <= IWL_POWER_RANGE_0_MAX) |
| 210 | range = &pow_data->pwr_range_0[0]; |
| 211 | else if (pow_data->dtim_period <= IWL_POWER_RANGE_1_MAX) |
| 212 | range = &pow_data->pwr_range_1[0]; |
| 213 | else |
| 214 | range = &pow_data->pwr_range_2[0]; |
| 215 | |
| 216 | period = pow_data->dtim_period; |
Mohamed Abbas | ca57961 | 2008-07-18 13:52:57 +0800 | [diff] [blame] | 217 | memcpy(cmd, &range[mode].cmd, sizeof(struct iwl_powertable_cmd)); |
Mohamed Abbas | 5da4b55f | 2008-04-21 15:41:51 -0700 | [diff] [blame] | 218 | |
| 219 | if (period == 0) { |
| 220 | period = 1; |
| 221 | skip = 0; |
| 222 | } else |
| 223 | skip = range[mode].no_dtim; |
| 224 | |
| 225 | if (skip == 0) { |
| 226 | max_sleep = period; |
| 227 | cmd->flags &= ~IWL_POWER_SLEEP_OVER_DTIM_MSK; |
| 228 | } else { |
| 229 | __le32 slp_itrvl = cmd->sleep_interval[IWL_POWER_VEC_SIZE - 1]; |
| 230 | max_sleep = le32_to_cpu(slp_itrvl); |
| 231 | if (max_sleep == 0xFF) |
| 232 | max_sleep = period * (skip + 1); |
| 233 | else if (max_sleep > period) |
| 234 | max_sleep = (le32_to_cpu(slp_itrvl) / period) * period; |
| 235 | cmd->flags |= IWL_POWER_SLEEP_OVER_DTIM_MSK; |
| 236 | } |
| 237 | |
| 238 | for (i = 0; i < IWL_POWER_VEC_SIZE; i++) { |
| 239 | if (le32_to_cpu(cmd->sleep_interval[i]) > max_sleep) |
| 240 | cmd->sleep_interval[i] = cpu_to_le32(max_sleep); |
| 241 | } |
| 242 | |
| 243 | IWL_DEBUG_POWER("Flags value = 0x%08X\n", cmd->flags); |
| 244 | IWL_DEBUG_POWER("Tx timeout = %u\n", le32_to_cpu(cmd->tx_data_timeout)); |
| 245 | IWL_DEBUG_POWER("Rx timeout = %u\n", le32_to_cpu(cmd->rx_data_timeout)); |
| 246 | IWL_DEBUG_POWER("Sleep interval vector = { %d , %d , %d , %d , %d }\n", |
| 247 | le32_to_cpu(cmd->sleep_interval[0]), |
| 248 | le32_to_cpu(cmd->sleep_interval[1]), |
| 249 | le32_to_cpu(cmd->sleep_interval[2]), |
| 250 | le32_to_cpu(cmd->sleep_interval[3]), |
| 251 | le32_to_cpu(cmd->sleep_interval[4])); |
| 252 | |
| 253 | return ret; |
| 254 | } |
| 255 | |
| 256 | |
| 257 | /* |
| 258 | * calucaute the final power mode index |
| 259 | */ |
| 260 | int iwl_power_update_mode(struct iwl_priv *priv, u8 refresh) |
| 261 | { |
| 262 | struct iwl_power_mgr *setting = &(priv->power_data); |
| 263 | int ret = 0; |
| 264 | u16 uninitialized_var(final_mode); |
| 265 | |
| 266 | /* If on battery, set to 3, |
| 267 | * if plugged into AC power, set to CAM ("continuously aware mode"), |
| 268 | * else user level */ |
| 269 | |
| 270 | switch (setting->system_power_setting) { |
Esti Kummer | 298df1f | 2008-07-18 13:52:58 +0800 | [diff] [blame] | 271 | case IWL_POWER_SYS_AUTO: |
Mohamed Abbas | 5da4b55f | 2008-04-21 15:41:51 -0700 | [diff] [blame] | 272 | final_mode = iwl_get_auto_power_mode(priv); |
| 273 | break; |
Esti Kummer | 298df1f | 2008-07-18 13:52:58 +0800 | [diff] [blame] | 274 | case IWL_POWER_SYS_BATTERY: |
Mohamed Abbas | 5da4b55f | 2008-04-21 15:41:51 -0700 | [diff] [blame] | 275 | final_mode = IWL_POWER_INDEX_3; |
| 276 | break; |
Esti Kummer | 298df1f | 2008-07-18 13:52:58 +0800 | [diff] [blame] | 277 | case IWL_POWER_SYS_AC: |
Mohamed Abbas | 5da4b55f | 2008-04-21 15:41:51 -0700 | [diff] [blame] | 278 | final_mode = IWL_POWER_MODE_CAM; |
| 279 | break; |
| 280 | default: |
Esti Kummer | 298df1f | 2008-07-18 13:52:58 +0800 | [diff] [blame] | 281 | final_mode = IWL_POWER_INDEX_3; |
| 282 | WARN_ON(1); |
Mohamed Abbas | 5da4b55f | 2008-04-21 15:41:51 -0700 | [diff] [blame] | 283 | } |
| 284 | |
| 285 | if (setting->critical_power_setting > final_mode) |
| 286 | final_mode = setting->critical_power_setting; |
| 287 | |
| 288 | /* driver only support CAM for non STA network */ |
| 289 | if (priv->iw_mode != IEEE80211_IF_TYPE_STA) |
| 290 | final_mode = IWL_POWER_MODE_CAM; |
| 291 | |
| 292 | if (!iwl_is_rfkill(priv) && !setting->power_disabled && |
| 293 | ((setting->power_mode != final_mode) || refresh)) { |
Mohamed Abbas | ca57961 | 2008-07-18 13:52:57 +0800 | [diff] [blame] | 294 | struct iwl_powertable_cmd cmd; |
Mohamed Abbas | 5da4b55f | 2008-04-21 15:41:51 -0700 | [diff] [blame] | 295 | |
| 296 | if (final_mode != IWL_POWER_MODE_CAM) |
| 297 | set_bit(STATUS_POWER_PMI, &priv->status); |
| 298 | |
| 299 | iwl_update_power_command(priv, &cmd, final_mode); |
| 300 | cmd.keep_alive_beacons = 0; |
| 301 | |
| 302 | if (final_mode == IWL_POWER_INDEX_5) |
| 303 | cmd.flags |= IWL_POWER_FAST_PD; |
| 304 | |
Mohamed Abbas | ca57961 | 2008-07-18 13:52:57 +0800 | [diff] [blame] | 305 | ret = iwl_set_power(priv, &cmd); |
Mohamed Abbas | 5da4b55f | 2008-04-21 15:41:51 -0700 | [diff] [blame] | 306 | |
| 307 | if (final_mode == IWL_POWER_MODE_CAM) |
| 308 | clear_bit(STATUS_POWER_PMI, &priv->status); |
| 309 | else |
| 310 | set_bit(STATUS_POWER_PMI, &priv->status); |
| 311 | |
| 312 | if (priv->cfg->ops->lib->update_chain_flags) |
| 313 | priv->cfg->ops->lib->update_chain_flags(priv); |
| 314 | |
| 315 | if (!ret) |
| 316 | setting->power_mode = final_mode; |
| 317 | } |
| 318 | |
| 319 | return ret; |
| 320 | } |
| 321 | EXPORT_SYMBOL(iwl_power_update_mode); |
| 322 | |
| 323 | /* Allow other iwl code to disable/enable power management active |
| 324 | * this will be usefull for rate scale to disable PM during heavy |
| 325 | * Tx/Rx activities |
| 326 | */ |
| 327 | int iwl_power_disable_management(struct iwl_priv *priv) |
| 328 | { |
| 329 | u16 prev_mode; |
| 330 | int ret = 0; |
| 331 | |
| 332 | if (priv->power_data.power_disabled) |
| 333 | return -EBUSY; |
| 334 | |
| 335 | prev_mode = priv->power_data.user_power_setting; |
| 336 | priv->power_data.user_power_setting = IWL_POWER_MODE_CAM; |
| 337 | ret = iwl_power_update_mode(priv, 0); |
| 338 | priv->power_data.power_disabled = 1; |
| 339 | priv->power_data.user_power_setting = prev_mode; |
| 340 | |
| 341 | return ret; |
| 342 | } |
| 343 | EXPORT_SYMBOL(iwl_power_disable_management); |
| 344 | |
| 345 | /* Allow other iwl code to disable/enable power management active |
| 346 | * this will be usefull for rate scale to disable PM during hight |
| 347 | * valume activities |
| 348 | */ |
| 349 | int iwl_power_enable_management(struct iwl_priv *priv) |
| 350 | { |
| 351 | int ret = 0; |
| 352 | |
| 353 | priv->power_data.power_disabled = 0; |
| 354 | ret = iwl_power_update_mode(priv, 0); |
| 355 | return ret; |
| 356 | } |
| 357 | EXPORT_SYMBOL(iwl_power_enable_management); |
| 358 | |
| 359 | /* set user_power_setting */ |
| 360 | int iwl_power_set_user_mode(struct iwl_priv *priv, u16 mode) |
| 361 | { |
| 362 | int ret = 0; |
| 363 | |
| 364 | if (mode > IWL_POWER_LIMIT) |
| 365 | return -EINVAL; |
| 366 | |
| 367 | priv->power_data.user_power_setting = mode; |
| 368 | |
| 369 | ret = iwl_power_update_mode(priv, 0); |
| 370 | |
| 371 | return ret; |
| 372 | } |
| 373 | EXPORT_SYMBOL(iwl_power_set_user_mode); |
| 374 | |
| 375 | |
| 376 | /* set system_power_setting. This should be set by over all |
| 377 | * PM application. |
| 378 | */ |
| 379 | int iwl_power_set_system_mode(struct iwl_priv *priv, u16 mode) |
| 380 | { |
| 381 | int ret = 0; |
| 382 | |
| 383 | if (mode > IWL_POWER_LIMIT) |
| 384 | return -EINVAL; |
| 385 | |
| 386 | priv->power_data.system_power_setting = mode; |
| 387 | |
| 388 | ret = iwl_power_update_mode(priv, 0); |
| 389 | |
| 390 | return ret; |
| 391 | } |
| 392 | EXPORT_SYMBOL(iwl_power_set_system_mode); |
| 393 | |
| 394 | /* initilize to default */ |
| 395 | void iwl_power_initialize(struct iwl_priv *priv) |
| 396 | { |
| 397 | |
| 398 | iwl_power_init_handle(priv); |
| 399 | priv->power_data.user_power_setting = IWL_POWER_AUTO; |
| 400 | priv->power_data.power_disabled = 0; |
Esti Kummer | 298df1f | 2008-07-18 13:52:58 +0800 | [diff] [blame] | 401 | priv->power_data.system_power_setting = IWL_POWER_SYS_AUTO; |
Mohamed Abbas | 5da4b55f | 2008-04-21 15:41:51 -0700 | [diff] [blame] | 402 | priv->power_data.is_battery_active = 0; |
| 403 | priv->power_data.power_disabled = 0; |
| 404 | priv->power_data.critical_power_setting = 0; |
| 405 | } |
| 406 | EXPORT_SYMBOL(iwl_power_initialize); |
| 407 | |
| 408 | /* set critical_power_setting according to temperature value */ |
| 409 | int iwl_power_temperature_change(struct iwl_priv *priv) |
| 410 | { |
| 411 | int ret = 0; |
| 412 | u16 new_critical = priv->power_data.critical_power_setting; |
| 413 | s32 temperature = KELVIN_TO_CELSIUS(priv->last_temperature); |
| 414 | |
| 415 | if (temperature > IWL_CT_KILL_TEMPERATURE) |
| 416 | return 0; |
| 417 | else if (temperature > IWL_MIN_POWER_TEMPERATURE) |
| 418 | new_critical = IWL_POWER_INDEX_5; |
| 419 | else if (temperature > IWL_REDUCED_POWER_TEMPERATURE) |
| 420 | new_critical = IWL_POWER_INDEX_3; |
| 421 | else |
| 422 | new_critical = IWL_POWER_MODE_CAM; |
| 423 | |
| 424 | if (new_critical != priv->power_data.critical_power_setting) |
| 425 | priv->power_data.critical_power_setting = new_critical; |
| 426 | |
| 427 | if (priv->power_data.critical_power_setting > |
| 428 | priv->power_data.power_mode) |
| 429 | ret = iwl_power_update_mode(priv, 0); |
| 430 | |
| 431 | return ret; |
| 432 | } |
| 433 | EXPORT_SYMBOL(iwl_power_temperature_change); |