Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | |
| 2 | /****************************************************************************** |
| 3 | * |
| 4 | * Name: hwsleep.c - ACPI Hardware Sleep/Wake Interface |
| 5 | * |
| 6 | *****************************************************************************/ |
| 7 | |
| 8 | /* |
Bob Moore | 6c9deb7 | 2007-02-02 19:48:24 +0300 | [diff] [blame] | 9 | * Copyright (C) 2000 - 2007, R. Byron Moore |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 10 | * All rights reserved. |
| 11 | * |
| 12 | * Redistribution and use in source and binary forms, with or without |
| 13 | * modification, are permitted provided that the following conditions |
| 14 | * are met: |
| 15 | * 1. Redistributions of source code must retain the above copyright |
| 16 | * notice, this list of conditions, and the following disclaimer, |
| 17 | * without modification. |
| 18 | * 2. Redistributions in binary form must reproduce at minimum a disclaimer |
| 19 | * substantially similar to the "NO WARRANTY" disclaimer below |
| 20 | * ("Disclaimer") and any redistribution must be conditioned upon |
| 21 | * including a substantially similar Disclaimer requirement for further |
| 22 | * binary redistribution. |
| 23 | * 3. Neither the names of the above-listed copyright holders nor the names |
| 24 | * of any contributors may be used to endorse or promote products derived |
| 25 | * from this software without specific prior written permission. |
| 26 | * |
| 27 | * Alternatively, this software may be distributed under the terms of the |
| 28 | * GNU General Public License ("GPL") version 2 as published by the Free |
| 29 | * Software Foundation. |
| 30 | * |
| 31 | * NO WARRANTY |
| 32 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| 33 | * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| 34 | * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR |
| 35 | * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
| 36 | * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
| 37 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
| 38 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
| 39 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, |
| 40 | * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING |
| 41 | * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
| 42 | * POSSIBILITY OF SUCH DAMAGES. |
| 43 | */ |
| 44 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 45 | #include <acpi/acpi.h> |
Bob Moore | f3d2e78 | 2007-02-02 19:48:18 +0300 | [diff] [blame] | 46 | #include <acpi/actables.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 47 | |
| 48 | #define _COMPONENT ACPI_HARDWARE |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 49 | ACPI_MODULE_NAME("hwsleep") |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 50 | |
Robert Moore | 44f6c01 | 2005-04-18 22:49:35 -0400 | [diff] [blame] | 51 | /******************************************************************************* |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 52 | * |
| 53 | * FUNCTION: acpi_set_firmware_waking_vector |
| 54 | * |
| 55 | * PARAMETERS: physical_address - Physical address of ACPI real mode |
| 56 | * entry point. |
| 57 | * |
| 58 | * RETURN: Status |
| 59 | * |
Robert Moore | 44f6c01 | 2005-04-18 22:49:35 -0400 | [diff] [blame] | 60 | * DESCRIPTION: Access function for the firmware_waking_vector field in FACS |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 61 | * |
| 62 | ******************************************************************************/ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 63 | acpi_status |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 64 | acpi_set_firmware_waking_vector(acpi_physical_address physical_address) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 65 | { |
Bob Moore | f3d2e78 | 2007-02-02 19:48:18 +0300 | [diff] [blame] | 66 | struct acpi_table_facs *facs; |
| 67 | acpi_status status; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 68 | |
Bob Moore | b229cf9 | 2006-04-21 17:15:00 -0400 | [diff] [blame] | 69 | ACPI_FUNCTION_TRACE(acpi_set_firmware_waking_vector); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 70 | |
Bob Moore | f3d2e78 | 2007-02-02 19:48:18 +0300 | [diff] [blame] | 71 | /* Get the FACS */ |
| 72 | |
| 73 | status = |
| 74 | acpi_get_table_by_index(ACPI_TABLE_INDEX_FACS, |
| 75 | (struct acpi_table_header **)&facs); |
| 76 | if (ACPI_FAILURE(status)) { |
| 77 | return_ACPI_STATUS(status); |
| 78 | } |
| 79 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 80 | /* Set the vector */ |
| 81 | |
Bob Moore | f3d2e78 | 2007-02-02 19:48:18 +0300 | [diff] [blame] | 82 | if ((facs->length < 32) || (!(facs->xfirmware_waking_vector))) { |
| 83 | /* |
| 84 | * ACPI 1.0 FACS or short table or optional X_ field is zero |
| 85 | */ |
| 86 | facs->firmware_waking_vector = (u32) physical_address; |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 87 | } else { |
Bob Moore | f3d2e78 | 2007-02-02 19:48:18 +0300 | [diff] [blame] | 88 | /* |
| 89 | * ACPI 2.0 FACS with valid X_ field |
| 90 | */ |
| 91 | facs->xfirmware_waking_vector = physical_address; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 92 | } |
| 93 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 94 | return_ACPI_STATUS(AE_OK); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 95 | } |
| 96 | |
Bob Moore | 8313524 | 2006-10-03 00:00:00 -0400 | [diff] [blame] | 97 | ACPI_EXPORT_SYMBOL(acpi_set_firmware_waking_vector) |
| 98 | |
Robert Moore | 44f6c01 | 2005-04-18 22:49:35 -0400 | [diff] [blame] | 99 | /******************************************************************************* |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 100 | * |
| 101 | * FUNCTION: acpi_get_firmware_waking_vector |
| 102 | * |
Robert Moore | 44f6c01 | 2005-04-18 22:49:35 -0400 | [diff] [blame] | 103 | * PARAMETERS: *physical_address - Where the contents of |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 104 | * the firmware_waking_vector field of |
Robert Moore | 44f6c01 | 2005-04-18 22:49:35 -0400 | [diff] [blame] | 105 | * the FACS will be returned. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 106 | * |
Robert Moore | 44f6c01 | 2005-04-18 22:49:35 -0400 | [diff] [blame] | 107 | * RETURN: Status, vector |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 108 | * |
Robert Moore | 44f6c01 | 2005-04-18 22:49:35 -0400 | [diff] [blame] | 109 | * DESCRIPTION: Access function for the firmware_waking_vector field in FACS |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 110 | * |
| 111 | ******************************************************************************/ |
| 112 | #ifdef ACPI_FUTURE_USAGE |
| 113 | acpi_status |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 114 | acpi_get_firmware_waking_vector(acpi_physical_address * physical_address) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 115 | { |
Bob Moore | f3d2e78 | 2007-02-02 19:48:18 +0300 | [diff] [blame] | 116 | struct acpi_table_facs *facs; |
| 117 | acpi_status status; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 118 | |
Bob Moore | b229cf9 | 2006-04-21 17:15:00 -0400 | [diff] [blame] | 119 | ACPI_FUNCTION_TRACE(acpi_get_firmware_waking_vector); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 120 | |
| 121 | if (!physical_address) { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 122 | return_ACPI_STATUS(AE_BAD_PARAMETER); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 123 | } |
| 124 | |
Bob Moore | f3d2e78 | 2007-02-02 19:48:18 +0300 | [diff] [blame] | 125 | /* Get the FACS */ |
| 126 | |
| 127 | status = |
| 128 | acpi_get_table_by_index(ACPI_TABLE_INDEX_FACS, |
| 129 | (struct acpi_table_header **)&facs); |
| 130 | if (ACPI_FAILURE(status)) { |
| 131 | return_ACPI_STATUS(status); |
| 132 | } |
| 133 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 134 | /* Get the vector */ |
| 135 | |
Bob Moore | f3d2e78 | 2007-02-02 19:48:18 +0300 | [diff] [blame] | 136 | if ((facs->length < 32) || (!(facs->xfirmware_waking_vector))) { |
| 137 | /* |
| 138 | * ACPI 1.0 FACS or short table or optional X_ field is zero |
| 139 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 140 | *physical_address = |
Bob Moore | f3d2e78 | 2007-02-02 19:48:18 +0300 | [diff] [blame] | 141 | (acpi_physical_address) facs->firmware_waking_vector; |
| 142 | } else { |
| 143 | /* |
| 144 | * ACPI 2.0 FACS with valid X_ field |
| 145 | */ |
| 146 | *physical_address = |
| 147 | (acpi_physical_address) facs->xfirmware_waking_vector; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 148 | } |
| 149 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 150 | return_ACPI_STATUS(AE_OK); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 151 | } |
Bob Moore | 8313524 | 2006-10-03 00:00:00 -0400 | [diff] [blame] | 152 | |
| 153 | ACPI_EXPORT_SYMBOL(acpi_get_firmware_waking_vector) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 154 | #endif |
Robert Moore | 44f6c01 | 2005-04-18 22:49:35 -0400 | [diff] [blame] | 155 | /******************************************************************************* |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 156 | * |
| 157 | * FUNCTION: acpi_enter_sleep_state_prep |
| 158 | * |
| 159 | * PARAMETERS: sleep_state - Which sleep state to enter |
| 160 | * |
| 161 | * RETURN: Status |
| 162 | * |
| 163 | * DESCRIPTION: Prepare to enter a system sleep state (see ACPI 2.0 spec p 231) |
| 164 | * This function must execute with interrupts enabled. |
| 165 | * We break sleeping into 2 stages so that OSPM can handle |
| 166 | * various OS-specific tasks between the two steps. |
| 167 | * |
| 168 | ******************************************************************************/ |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 169 | acpi_status acpi_enter_sleep_state_prep(u8 sleep_state) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 170 | { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 171 | acpi_status status; |
| 172 | struct acpi_object_list arg_list; |
| 173 | union acpi_object arg; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 174 | |
Bob Moore | b229cf9 | 2006-04-21 17:15:00 -0400 | [diff] [blame] | 175 | ACPI_FUNCTION_TRACE(acpi_enter_sleep_state_prep); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 176 | |
| 177 | /* |
| 178 | * _PSW methods could be run here to enable wake-on keyboard, LAN, etc. |
| 179 | */ |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 180 | status = acpi_get_sleep_type_data(sleep_state, |
| 181 | &acpi_gbl_sleep_type_a, |
| 182 | &acpi_gbl_sleep_type_b); |
| 183 | if (ACPI_FAILURE(status)) { |
| 184 | return_ACPI_STATUS(status); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 185 | } |
| 186 | |
| 187 | /* Setup parameter object */ |
| 188 | |
| 189 | arg_list.count = 1; |
| 190 | arg_list.pointer = &arg; |
| 191 | |
| 192 | arg.type = ACPI_TYPE_INTEGER; |
| 193 | arg.integer.value = sleep_state; |
| 194 | |
Rafael J. Wysocki | c95d47a | 2008-01-08 00:05:21 +0100 | [diff] [blame] | 195 | /* Run the _PTS method */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 196 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 197 | status = acpi_evaluate_object(NULL, METHOD_NAME__PTS, &arg_list, NULL); |
| 198 | if (ACPI_FAILURE(status) && status != AE_NOT_FOUND) { |
| 199 | return_ACPI_STATUS(status); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 200 | } |
| 201 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 202 | /* Setup the argument to _SST */ |
| 203 | |
| 204 | switch (sleep_state) { |
| 205 | case ACPI_STATE_S0: |
| 206 | arg.integer.value = ACPI_SST_WORKING; |
| 207 | break; |
| 208 | |
| 209 | case ACPI_STATE_S1: |
| 210 | case ACPI_STATE_S2: |
| 211 | case ACPI_STATE_S3: |
| 212 | arg.integer.value = ACPI_SST_SLEEPING; |
| 213 | break; |
| 214 | |
| 215 | case ACPI_STATE_S4: |
| 216 | arg.integer.value = ACPI_SST_SLEEP_CONTEXT; |
| 217 | break; |
| 218 | |
| 219 | default: |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 220 | arg.integer.value = ACPI_SST_INDICATOR_OFF; /* Default is off */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 221 | break; |
| 222 | } |
| 223 | |
| 224 | /* Set the system indicators to show the desired sleep state. */ |
| 225 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 226 | status = acpi_evaluate_object(NULL, METHOD_NAME__SST, &arg_list, NULL); |
| 227 | if (ACPI_FAILURE(status) && status != AE_NOT_FOUND) { |
Bob Moore | b8e4d89 | 2006-01-27 16:43:00 -0500 | [diff] [blame] | 228 | ACPI_EXCEPTION((AE_INFO, status, |
| 229 | "While executing method _SST")); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 230 | } |
| 231 | |
Rafael J. Wysocki | 6cffd46 | 2007-10-02 13:24:09 -0700 | [diff] [blame] | 232 | return_ACPI_STATUS(status); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 233 | } |
| 234 | |
Bob Moore | 8313524 | 2006-10-03 00:00:00 -0400 | [diff] [blame] | 235 | ACPI_EXPORT_SYMBOL(acpi_enter_sleep_state_prep) |
| 236 | |
Robert Moore | 44f6c01 | 2005-04-18 22:49:35 -0400 | [diff] [blame] | 237 | /******************************************************************************* |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 238 | * |
| 239 | * FUNCTION: acpi_enter_sleep_state |
| 240 | * |
| 241 | * PARAMETERS: sleep_state - Which sleep state to enter |
| 242 | * |
| 243 | * RETURN: Status |
| 244 | * |
| 245 | * DESCRIPTION: Enter a system sleep state (see ACPI 2.0 spec p 231) |
| 246 | * THIS FUNCTION MUST BE CALLED WITH INTERRUPTS DISABLED |
| 247 | * |
| 248 | ******************************************************************************/ |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 249 | acpi_status asmlinkage acpi_enter_sleep_state(u8 sleep_state) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 250 | { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 251 | u32 PM1Acontrol; |
| 252 | u32 PM1Bcontrol; |
| 253 | struct acpi_bit_register_info *sleep_type_reg_info; |
| 254 | struct acpi_bit_register_info *sleep_enable_reg_info; |
| 255 | u32 in_value; |
Rafael J. Wysocki | c95d47a | 2008-01-08 00:05:21 +0100 | [diff] [blame] | 256 | struct acpi_object_list arg_list; |
| 257 | union acpi_object arg; |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 258 | acpi_status status; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 259 | |
Bob Moore | b229cf9 | 2006-04-21 17:15:00 -0400 | [diff] [blame] | 260 | ACPI_FUNCTION_TRACE(acpi_enter_sleep_state); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 261 | |
| 262 | if ((acpi_gbl_sleep_type_a > ACPI_SLEEP_TYPE_MAX) || |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 263 | (acpi_gbl_sleep_type_b > ACPI_SLEEP_TYPE_MAX)) { |
Bob Moore | b8e4d89 | 2006-01-27 16:43:00 -0500 | [diff] [blame] | 264 | ACPI_ERROR((AE_INFO, "Sleep values out of range: A=%X B=%X", |
| 265 | acpi_gbl_sleep_type_a, acpi_gbl_sleep_type_b)); |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 266 | return_ACPI_STATUS(AE_AML_OPERAND_VALUE); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 267 | } |
| 268 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 269 | sleep_type_reg_info = |
| 270 | acpi_hw_get_bit_register_info(ACPI_BITREG_SLEEP_TYPE_A); |
| 271 | sleep_enable_reg_info = |
| 272 | acpi_hw_get_bit_register_info(ACPI_BITREG_SLEEP_ENABLE); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 273 | |
| 274 | /* Clear wake status */ |
| 275 | |
Bob Moore | d8c71b6 | 2007-02-02 19:48:21 +0300 | [diff] [blame] | 276 | status = acpi_set_register(ACPI_BITREG_WAKE_STATUS, 1); |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 277 | if (ACPI_FAILURE(status)) { |
| 278 | return_ACPI_STATUS(status); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 279 | } |
| 280 | |
| 281 | /* Clear all fixed and general purpose status bits */ |
| 282 | |
Bob Moore | d8c71b6 | 2007-02-02 19:48:21 +0300 | [diff] [blame] | 283 | status = acpi_hw_clear_acpi_status(); |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 284 | if (ACPI_FAILURE(status)) { |
| 285 | return_ACPI_STATUS(status); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 286 | } |
| 287 | |
| 288 | /* |
Pavel Machek | 23b168d | 2008-02-05 19:27:12 +0100 | [diff] [blame] | 289 | * 1) Disable/Clear all GPEs |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 290 | * 2) Enable all wakeup GPEs |
| 291 | */ |
Alexey Starikovskiy | 1d99967 | 2007-03-12 14:49:26 -0400 | [diff] [blame] | 292 | status = acpi_hw_disable_all_gpes(); |
| 293 | if (ACPI_FAILURE(status)) { |
| 294 | return_ACPI_STATUS(status); |
| 295 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 296 | acpi_gbl_system_awake_and_running = FALSE; |
| 297 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 298 | status = acpi_hw_enable_all_wakeup_gpes(); |
| 299 | if (ACPI_FAILURE(status)) { |
| 300 | return_ACPI_STATUS(status); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 301 | } |
| 302 | |
Rafael J. Wysocki | c95d47a | 2008-01-08 00:05:21 +0100 | [diff] [blame] | 303 | /* Execute the _GTS method */ |
| 304 | |
| 305 | arg_list.count = 1; |
| 306 | arg_list.pointer = &arg; |
| 307 | arg.type = ACPI_TYPE_INTEGER; |
| 308 | arg.integer.value = sleep_state; |
| 309 | |
| 310 | status = acpi_evaluate_object(NULL, METHOD_NAME__GTS, &arg_list, NULL); |
| 311 | if (ACPI_FAILURE(status) && status != AE_NOT_FOUND) { |
| 312 | return_ACPI_STATUS(status); |
| 313 | } |
| 314 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 315 | /* Get current value of PM1A control */ |
| 316 | |
Alexey Starikovskiy | d30dc9ab | 2007-09-30 22:39:36 +0400 | [diff] [blame] | 317 | status = acpi_hw_register_read(ACPI_REGISTER_PM1_CONTROL, &PM1Acontrol); |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 318 | if (ACPI_FAILURE(status)) { |
| 319 | return_ACPI_STATUS(status); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 320 | } |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 321 | ACPI_DEBUG_PRINT((ACPI_DB_INIT, |
| 322 | "Entering sleep state [S%d]\n", sleep_state)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 323 | |
| 324 | /* Clear SLP_EN and SLP_TYP fields */ |
| 325 | |
Robert Moore | 44f6c01 | 2005-04-18 22:49:35 -0400 | [diff] [blame] | 326 | PM1Acontrol &= ~(sleep_type_reg_info->access_bit_mask | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 327 | sleep_enable_reg_info->access_bit_mask); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 328 | PM1Bcontrol = PM1Acontrol; |
| 329 | |
| 330 | /* Insert SLP_TYP bits */ |
| 331 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 332 | PM1Acontrol |= |
| 333 | (acpi_gbl_sleep_type_a << sleep_type_reg_info->bit_position); |
| 334 | PM1Bcontrol |= |
| 335 | (acpi_gbl_sleep_type_b << sleep_type_reg_info->bit_position); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 336 | |
| 337 | /* |
| 338 | * We split the writes of SLP_TYP and SLP_EN to workaround |
| 339 | * poorly implemented hardware. |
| 340 | */ |
| 341 | |
| 342 | /* Write #1: fill in SLP_TYP data */ |
| 343 | |
Alexey Starikovskiy | d30dc9ab | 2007-09-30 22:39:36 +0400 | [diff] [blame] | 344 | status = acpi_hw_register_write(ACPI_REGISTER_PM1A_CONTROL, |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 345 | PM1Acontrol); |
| 346 | if (ACPI_FAILURE(status)) { |
| 347 | return_ACPI_STATUS(status); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 348 | } |
| 349 | |
Alexey Starikovskiy | d30dc9ab | 2007-09-30 22:39:36 +0400 | [diff] [blame] | 350 | status = acpi_hw_register_write(ACPI_REGISTER_PM1B_CONTROL, |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 351 | PM1Bcontrol); |
| 352 | if (ACPI_FAILURE(status)) { |
| 353 | return_ACPI_STATUS(status); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 354 | } |
| 355 | |
| 356 | /* Insert SLP_ENABLE bit */ |
| 357 | |
| 358 | PM1Acontrol |= sleep_enable_reg_info->access_bit_mask; |
| 359 | PM1Bcontrol |= sleep_enable_reg_info->access_bit_mask; |
| 360 | |
| 361 | /* Write #2: SLP_TYP + SLP_EN */ |
| 362 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 363 | ACPI_FLUSH_CPU_CACHE(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 364 | |
Alexey Starikovskiy | d30dc9ab | 2007-09-30 22:39:36 +0400 | [diff] [blame] | 365 | status = acpi_hw_register_write(ACPI_REGISTER_PM1A_CONTROL, |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 366 | PM1Acontrol); |
| 367 | if (ACPI_FAILURE(status)) { |
| 368 | return_ACPI_STATUS(status); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 369 | } |
| 370 | |
Alexey Starikovskiy | d30dc9ab | 2007-09-30 22:39:36 +0400 | [diff] [blame] | 371 | status = acpi_hw_register_write(ACPI_REGISTER_PM1B_CONTROL, |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 372 | PM1Bcontrol); |
| 373 | if (ACPI_FAILURE(status)) { |
| 374 | return_ACPI_STATUS(status); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 375 | } |
| 376 | |
| 377 | if (sleep_state > ACPI_STATE_S3) { |
| 378 | /* |
Robert Moore | 44f6c01 | 2005-04-18 22:49:35 -0400 | [diff] [blame] | 379 | * We wanted to sleep > S3, but it didn't happen (by virtue of the |
| 380 | * fact that we are still executing!) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 381 | * |
Robert Moore | 44f6c01 | 2005-04-18 22:49:35 -0400 | [diff] [blame] | 382 | * Wait ten seconds, then try again. This is to get S4/S5 to work on |
| 383 | * all machines. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 384 | * |
| 385 | * We wait so long to allow chipsets that poll this reg very slowly to |
| 386 | * still read the right value. Ideally, this block would go |
| 387 | * away entirely. |
| 388 | */ |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 389 | acpi_os_stall(10000000); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 390 | |
Alexey Starikovskiy | d30dc9ab | 2007-09-30 22:39:36 +0400 | [diff] [blame] | 391 | status = acpi_hw_register_write(ACPI_REGISTER_PM1_CONTROL, |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 392 | sleep_enable_reg_info-> |
| 393 | access_bit_mask); |
| 394 | if (ACPI_FAILURE(status)) { |
| 395 | return_ACPI_STATUS(status); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 396 | } |
| 397 | } |
| 398 | |
| 399 | /* Wait until we enter sleep state */ |
| 400 | |
| 401 | do { |
Alexey Starikovskiy | 2d571b3 | 2007-09-30 22:39:42 +0400 | [diff] [blame] | 402 | status = acpi_get_register_unlocked(ACPI_BITREG_WAKE_STATUS, |
| 403 | &in_value); |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 404 | if (ACPI_FAILURE(status)) { |
| 405 | return_ACPI_STATUS(status); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 406 | } |
| 407 | |
| 408 | /* Spin until we wake */ |
| 409 | |
| 410 | } while (!in_value); |
| 411 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 412 | return_ACPI_STATUS(AE_OK); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 413 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 414 | |
Bob Moore | 8313524 | 2006-10-03 00:00:00 -0400 | [diff] [blame] | 415 | ACPI_EXPORT_SYMBOL(acpi_enter_sleep_state) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 416 | |
Robert Moore | 44f6c01 | 2005-04-18 22:49:35 -0400 | [diff] [blame] | 417 | /******************************************************************************* |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 418 | * |
| 419 | * FUNCTION: acpi_enter_sleep_state_s4bios |
| 420 | * |
| 421 | * PARAMETERS: None |
| 422 | * |
| 423 | * RETURN: Status |
| 424 | * |
| 425 | * DESCRIPTION: Perform a S4 bios request. |
| 426 | * THIS FUNCTION MUST BE CALLED WITH INTERRUPTS DISABLED |
| 427 | * |
| 428 | ******************************************************************************/ |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 429 | acpi_status asmlinkage acpi_enter_sleep_state_s4bios(void) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 430 | { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 431 | u32 in_value; |
| 432 | acpi_status status; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 433 | |
Bob Moore | b229cf9 | 2006-04-21 17:15:00 -0400 | [diff] [blame] | 434 | ACPI_FUNCTION_TRACE(acpi_enter_sleep_state_s4bios); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 435 | |
Bob Moore | d8c71b6 | 2007-02-02 19:48:21 +0300 | [diff] [blame] | 436 | status = acpi_set_register(ACPI_BITREG_WAKE_STATUS, 1); |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 437 | if (ACPI_FAILURE(status)) { |
| 438 | return_ACPI_STATUS(status); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 439 | } |
| 440 | |
Bob Moore | d8c71b6 | 2007-02-02 19:48:21 +0300 | [diff] [blame] | 441 | status = acpi_hw_clear_acpi_status(); |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 442 | if (ACPI_FAILURE(status)) { |
| 443 | return_ACPI_STATUS(status); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 444 | } |
| 445 | |
| 446 | /* |
| 447 | * 1) Disable/Clear all GPEs |
| 448 | * 2) Enable all wakeup GPEs |
| 449 | */ |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 450 | status = acpi_hw_disable_all_gpes(); |
| 451 | if (ACPI_FAILURE(status)) { |
| 452 | return_ACPI_STATUS(status); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 453 | } |
| 454 | acpi_gbl_system_awake_and_running = FALSE; |
| 455 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 456 | status = acpi_hw_enable_all_wakeup_gpes(); |
| 457 | if (ACPI_FAILURE(status)) { |
| 458 | return_ACPI_STATUS(status); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 459 | } |
| 460 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 461 | ACPI_FLUSH_CPU_CACHE(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 462 | |
Bob Moore | f3d2e78 | 2007-02-02 19:48:18 +0300 | [diff] [blame] | 463 | status = acpi_os_write_port(acpi_gbl_FADT.smi_command, |
| 464 | (u32) acpi_gbl_FADT.S4bios_request, 8); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 465 | |
| 466 | do { |
| 467 | acpi_os_stall(1000); |
Bob Moore | d8c71b6 | 2007-02-02 19:48:21 +0300 | [diff] [blame] | 468 | status = acpi_get_register(ACPI_BITREG_WAKE_STATUS, &in_value); |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 469 | if (ACPI_FAILURE(status)) { |
| 470 | return_ACPI_STATUS(status); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 471 | } |
| 472 | } while (!in_value); |
| 473 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 474 | return_ACPI_STATUS(AE_OK); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 475 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 476 | |
Bob Moore | 8313524 | 2006-10-03 00:00:00 -0400 | [diff] [blame] | 477 | ACPI_EXPORT_SYMBOL(acpi_enter_sleep_state_s4bios) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 478 | |
Robert Moore | 44f6c01 | 2005-04-18 22:49:35 -0400 | [diff] [blame] | 479 | /******************************************************************************* |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 480 | * |
Rafael J. Wysocki | c95d47a | 2008-01-08 00:05:21 +0100 | [diff] [blame] | 481 | * FUNCTION: acpi_leave_sleep_state_prep |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 482 | * |
Rafael J. Wysocki | c95d47a | 2008-01-08 00:05:21 +0100 | [diff] [blame] | 483 | * PARAMETERS: sleep_state - Which sleep state we are exiting |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 484 | * |
| 485 | * RETURN: Status |
| 486 | * |
Rafael J. Wysocki | c95d47a | 2008-01-08 00:05:21 +0100 | [diff] [blame] | 487 | * DESCRIPTION: Perform the first state of OS-independent ACPI cleanup after a |
| 488 | * sleep. |
| 489 | * Called with interrupts DISABLED. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 490 | * |
| 491 | ******************************************************************************/ |
Rafael J. Wysocki | c95d47a | 2008-01-08 00:05:21 +0100 | [diff] [blame] | 492 | acpi_status acpi_leave_sleep_state_prep(u8 sleep_state) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 493 | { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 494 | struct acpi_object_list arg_list; |
| 495 | union acpi_object arg; |
| 496 | acpi_status status; |
| 497 | struct acpi_bit_register_info *sleep_type_reg_info; |
| 498 | struct acpi_bit_register_info *sleep_enable_reg_info; |
| 499 | u32 PM1Acontrol; |
| 500 | u32 PM1Bcontrol; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 501 | |
Rafael J. Wysocki | c95d47a | 2008-01-08 00:05:21 +0100 | [diff] [blame] | 502 | ACPI_FUNCTION_TRACE(acpi_leave_sleep_state_prep); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 503 | |
| 504 | /* |
| 505 | * Set SLP_TYPE and SLP_EN to state S0. |
| 506 | * This is unclear from the ACPI Spec, but it is required |
| 507 | * by some machines. |
| 508 | */ |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 509 | status = acpi_get_sleep_type_data(ACPI_STATE_S0, |
| 510 | &acpi_gbl_sleep_type_a, |
| 511 | &acpi_gbl_sleep_type_b); |
| 512 | if (ACPI_SUCCESS(status)) { |
| 513 | sleep_type_reg_info = |
| 514 | acpi_hw_get_bit_register_info(ACPI_BITREG_SLEEP_TYPE_A); |
| 515 | sleep_enable_reg_info = |
| 516 | acpi_hw_get_bit_register_info(ACPI_BITREG_SLEEP_ENABLE); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 517 | |
| 518 | /* Get current value of PM1A control */ |
| 519 | |
Alexey Starikovskiy | d30dc9ab | 2007-09-30 22:39:36 +0400 | [diff] [blame] | 520 | status = acpi_hw_register_read(ACPI_REGISTER_PM1_CONTROL, |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 521 | &PM1Acontrol); |
| 522 | if (ACPI_SUCCESS(status)) { |
Bob Moore | 52fc0b0 | 2006-10-02 00:00:00 -0400 | [diff] [blame] | 523 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 524 | /* Clear SLP_EN and SLP_TYP fields */ |
| 525 | |
| 526 | PM1Acontrol &= ~(sleep_type_reg_info->access_bit_mask | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 527 | sleep_enable_reg_info-> |
| 528 | access_bit_mask); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 529 | PM1Bcontrol = PM1Acontrol; |
| 530 | |
| 531 | /* Insert SLP_TYP bits */ |
| 532 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 533 | PM1Acontrol |= |
| 534 | (acpi_gbl_sleep_type_a << sleep_type_reg_info-> |
| 535 | bit_position); |
| 536 | PM1Bcontrol |= |
| 537 | (acpi_gbl_sleep_type_b << sleep_type_reg_info-> |
| 538 | bit_position); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 539 | |
| 540 | /* Just ignore any errors */ |
| 541 | |
Alexey Starikovskiy | d30dc9ab | 2007-09-30 22:39:36 +0400 | [diff] [blame] | 542 | (void)acpi_hw_register_write(ACPI_REGISTER_PM1A_CONTROL, |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 543 | PM1Acontrol); |
Alexey Starikovskiy | d30dc9ab | 2007-09-30 22:39:36 +0400 | [diff] [blame] | 544 | (void)acpi_hw_register_write(ACPI_REGISTER_PM1B_CONTROL, |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 545 | PM1Bcontrol); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 546 | } |
| 547 | } |
| 548 | |
Rafael J. Wysocki | c95d47a | 2008-01-08 00:05:21 +0100 | [diff] [blame] | 549 | /* Execute the _BFS method */ |
| 550 | |
| 551 | arg_list.count = 1; |
| 552 | arg_list.pointer = &arg; |
| 553 | arg.type = ACPI_TYPE_INTEGER; |
| 554 | arg.integer.value = sleep_state; |
| 555 | |
| 556 | status = acpi_evaluate_object(NULL, METHOD_NAME__BFS, &arg_list, NULL); |
| 557 | if (ACPI_FAILURE(status) && status != AE_NOT_FOUND) { |
| 558 | ACPI_EXCEPTION((AE_INFO, status, "During Method _BFS")); |
| 559 | } |
| 560 | |
| 561 | return_ACPI_STATUS(status); |
| 562 | } |
| 563 | |
| 564 | /******************************************************************************* |
| 565 | * |
| 566 | * FUNCTION: acpi_leave_sleep_state |
| 567 | * |
| 568 | * PARAMETERS: sleep_state - Which sleep state we just exited |
| 569 | * |
| 570 | * RETURN: Status |
| 571 | * |
| 572 | * DESCRIPTION: Perform OS-independent ACPI cleanup after a sleep |
| 573 | * Called with interrupts ENABLED. |
| 574 | * |
| 575 | ******************************************************************************/ |
| 576 | acpi_status acpi_leave_sleep_state(u8 sleep_state) |
| 577 | { |
| 578 | struct acpi_object_list arg_list; |
| 579 | union acpi_object arg; |
| 580 | acpi_status status; |
| 581 | |
| 582 | ACPI_FUNCTION_TRACE(acpi_leave_sleep_state); |
| 583 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 584 | /* Ensure enter_sleep_state_prep -> enter_sleep_state ordering */ |
| 585 | |
| 586 | acpi_gbl_sleep_type_a = ACPI_SLEEP_TYPE_INVALID; |
| 587 | |
| 588 | /* Setup parameter object */ |
| 589 | |
| 590 | arg_list.count = 1; |
| 591 | arg_list.pointer = &arg; |
| 592 | arg.type = ACPI_TYPE_INTEGER; |
| 593 | |
| 594 | /* Ignore any errors from these methods */ |
| 595 | |
| 596 | arg.integer.value = ACPI_SST_WAKING; |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 597 | status = acpi_evaluate_object(NULL, METHOD_NAME__SST, &arg_list, NULL); |
| 598 | if (ACPI_FAILURE(status) && status != AE_NOT_FOUND) { |
Bob Moore | b8e4d89 | 2006-01-27 16:43:00 -0500 | [diff] [blame] | 599 | ACPI_EXCEPTION((AE_INFO, status, "During Method _SST")); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 600 | } |
| 601 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 602 | /* |
Thomas Renninger | 79d2dfa | 2007-08-24 01:24:47 -0400 | [diff] [blame] | 603 | * GPEs must be enabled before _WAK is called as GPEs |
| 604 | * might get fired there |
| 605 | * |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 606 | * Restore the GPEs: |
| 607 | * 1) Disable/Clear all GPEs |
| 608 | * 2) Enable all runtime GPEs |
| 609 | */ |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 610 | status = acpi_hw_disable_all_gpes(); |
| 611 | if (ACPI_FAILURE(status)) { |
| 612 | return_ACPI_STATUS(status); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 613 | } |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 614 | status = acpi_hw_enable_all_runtime_gpes(); |
| 615 | if (ACPI_FAILURE(status)) { |
| 616 | return_ACPI_STATUS(status); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 617 | } |
| 618 | |
Rafael J. Wysocki | 314ccd6 | 2008-02-13 00:32:16 +0100 | [diff] [blame^] | 619 | arg.integer.value = sleep_state; |
Thomas Renninger | 79d2dfa | 2007-08-24 01:24:47 -0400 | [diff] [blame] | 620 | status = acpi_evaluate_object(NULL, METHOD_NAME__WAK, &arg_list, NULL); |
| 621 | if (ACPI_FAILURE(status) && status != AE_NOT_FOUND) { |
| 622 | ACPI_EXCEPTION((AE_INFO, status, "During Method _WAK")); |
| 623 | } |
| 624 | /* TBD: _WAK "sometimes" returns stuff - do we want to look at it? */ |
| 625 | |
| 626 | acpi_gbl_system_awake_and_running = TRUE; |
| 627 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 628 | /* Enable power button */ |
| 629 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 630 | (void) |
| 631 | acpi_set_register(acpi_gbl_fixed_event_info |
Bob Moore | d8c71b6 | 2007-02-02 19:48:21 +0300 | [diff] [blame] | 632 | [ACPI_EVENT_POWER_BUTTON].enable_register_id, 1); |
Robert Moore | 44f6c01 | 2005-04-18 22:49:35 -0400 | [diff] [blame] | 633 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 634 | (void) |
| 635 | acpi_set_register(acpi_gbl_fixed_event_info |
Bob Moore | d8c71b6 | 2007-02-02 19:48:21 +0300 | [diff] [blame] | 636 | [ACPI_EVENT_POWER_BUTTON].status_register_id, 1); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 637 | |
| 638 | arg.integer.value = ACPI_SST_WORKING; |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 639 | status = acpi_evaluate_object(NULL, METHOD_NAME__SST, &arg_list, NULL); |
| 640 | if (ACPI_FAILURE(status) && status != AE_NOT_FOUND) { |
Bob Moore | b8e4d89 | 2006-01-27 16:43:00 -0500 | [diff] [blame] | 641 | ACPI_EXCEPTION((AE_INFO, status, "During Method _SST")); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 642 | } |
| 643 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 644 | return_ACPI_STATUS(status); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 645 | } |
Bob Moore | 8313524 | 2006-10-03 00:00:00 -0400 | [diff] [blame] | 646 | |
| 647 | ACPI_EXPORT_SYMBOL(acpi_leave_sleep_state) |