David Woodhouse | 58ac7aa | 2010-08-10 23:44:05 +0100 | [diff] [blame] | 1 | /* |
| 2 | * ideapad_acpi.c - Lenovo IdeaPad ACPI Extras |
| 3 | * |
| 4 | * Copyright © 2010 Intel Corporation |
| 5 | * Copyright © 2010 David Woodhouse <dwmw2@infradead.org> |
| 6 | * |
| 7 | * This program is free software; you can redistribute it and/or modify |
| 8 | * it under the terms of the GNU General Public License as published by |
| 9 | * the Free Software Foundation; either version 2 of the License, or |
| 10 | * (at your option) any later version. |
| 11 | * |
| 12 | * This program is distributed in the hope that it will be useful, |
| 13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 15 | * GNU General Public License for more details. |
| 16 | * |
| 17 | * You should have received a copy of the GNU General Public License |
| 18 | * along with this program; if not, write to the Free Software |
| 19 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA |
| 20 | * 02110-1301, USA. |
| 21 | */ |
| 22 | |
| 23 | #include <linux/kernel.h> |
| 24 | #include <linux/module.h> |
| 25 | #include <linux/init.h> |
| 26 | #include <linux/types.h> |
| 27 | #include <acpi/acpi_bus.h> |
| 28 | #include <acpi/acpi_drivers.h> |
| 29 | #include <linux/rfkill.h> |
| 30 | |
| 31 | #define IDEAPAD_DEV_CAMERA 0 |
| 32 | #define IDEAPAD_DEV_WLAN 1 |
| 33 | #define IDEAPAD_DEV_BLUETOOTH 2 |
| 34 | #define IDEAPAD_DEV_3G 3 |
| 35 | #define IDEAPAD_DEV_KILLSW 4 |
| 36 | |
David Woodhouse | ce32632 | 2010-08-11 17:59:35 +0100 | [diff] [blame] | 37 | struct ideapad_private { |
| 38 | struct rfkill *rfk[5]; |
David Woodhouse | 58ac7aa | 2010-08-10 23:44:05 +0100 | [diff] [blame] | 39 | }; |
David Woodhouse | ce32632 | 2010-08-11 17:59:35 +0100 | [diff] [blame] | 40 | |
| 41 | static struct { |
| 42 | char *name; |
| 43 | int type; |
| 44 | } ideapad_rfk_data[] = { |
| 45 | /* camera has no rfkill */ |
| 46 | { "ideapad_wlan", RFKILL_TYPE_WLAN }, |
| 47 | { "ideapad_bluetooth", RFKILL_TYPE_BLUETOOTH }, |
| 48 | { "ideapad_3g", RFKILL_TYPE_WWAN }, |
| 49 | { "ideapad_killsw", RFKILL_TYPE_WLAN } |
David Woodhouse | 58ac7aa | 2010-08-10 23:44:05 +0100 | [diff] [blame] | 50 | }; |
| 51 | |
Ike Panhc | 6a09f21 | 2010-10-01 15:38:46 +0800 | [diff] [blame] | 52 | /* |
| 53 | * ACPI Helpers |
| 54 | */ |
| 55 | #define IDEAPAD_EC_TIMEOUT (100) /* in ms */ |
| 56 | |
| 57 | static int read_method_int(acpi_handle handle, const char *method, int *val) |
| 58 | { |
| 59 | acpi_status status; |
| 60 | unsigned long long result; |
| 61 | |
| 62 | status = acpi_evaluate_integer(handle, (char *)method, NULL, &result); |
| 63 | if (ACPI_FAILURE(status)) { |
| 64 | *val = -1; |
| 65 | return -1; |
| 66 | } else { |
| 67 | *val = result; |
| 68 | return 0; |
| 69 | } |
| 70 | } |
| 71 | |
| 72 | static int method_vpcr(acpi_handle handle, int cmd, int *ret) |
| 73 | { |
| 74 | acpi_status status; |
| 75 | unsigned long long result; |
| 76 | struct acpi_object_list params; |
| 77 | union acpi_object in_obj; |
| 78 | |
| 79 | params.count = 1; |
| 80 | params.pointer = &in_obj; |
| 81 | in_obj.type = ACPI_TYPE_INTEGER; |
| 82 | in_obj.integer.value = cmd; |
| 83 | |
| 84 | status = acpi_evaluate_integer(handle, "VPCR", ¶ms, &result); |
| 85 | |
| 86 | if (ACPI_FAILURE(status)) { |
| 87 | *ret = -1; |
| 88 | return -1; |
| 89 | } else { |
| 90 | *ret = result; |
| 91 | return 0; |
| 92 | } |
| 93 | } |
| 94 | |
| 95 | static int method_vpcw(acpi_handle handle, int cmd, int data) |
| 96 | { |
| 97 | struct acpi_object_list params; |
| 98 | union acpi_object in_obj[2]; |
| 99 | acpi_status status; |
| 100 | |
| 101 | params.count = 2; |
| 102 | params.pointer = in_obj; |
| 103 | in_obj[0].type = ACPI_TYPE_INTEGER; |
| 104 | in_obj[0].integer.value = cmd; |
| 105 | in_obj[1].type = ACPI_TYPE_INTEGER; |
| 106 | in_obj[1].integer.value = data; |
| 107 | |
| 108 | status = acpi_evaluate_object(handle, "VPCW", ¶ms, NULL); |
| 109 | if (status != AE_OK) |
| 110 | return -1; |
| 111 | return 0; |
| 112 | } |
| 113 | |
| 114 | static int read_ec_data(acpi_handle handle, int cmd, unsigned long *data) |
| 115 | { |
| 116 | int val; |
| 117 | unsigned long int end_jiffies; |
| 118 | |
| 119 | if (method_vpcw(handle, 1, cmd)) |
| 120 | return -1; |
| 121 | |
| 122 | for (end_jiffies = jiffies+(HZ)*IDEAPAD_EC_TIMEOUT/1000+1; |
| 123 | time_before(jiffies, end_jiffies);) { |
| 124 | schedule(); |
| 125 | if (method_vpcr(handle, 1, &val)) |
| 126 | return -1; |
| 127 | if (val == 0) { |
| 128 | if (method_vpcr(handle, 0, &val)) |
| 129 | return -1; |
| 130 | *data = val; |
| 131 | return 0; |
| 132 | } |
| 133 | } |
| 134 | pr_err("timeout in read_ec_cmd\n"); |
| 135 | return -1; |
| 136 | } |
| 137 | |
| 138 | static int write_ec_cmd(acpi_handle handle, int cmd, unsigned long data) |
| 139 | { |
| 140 | int val; |
| 141 | unsigned long int end_jiffies; |
| 142 | |
| 143 | if (method_vpcw(handle, 0, data)) |
| 144 | return -1; |
| 145 | if (method_vpcw(handle, 1, cmd)) |
| 146 | return -1; |
| 147 | |
| 148 | for (end_jiffies = jiffies+(HZ)*IDEAPAD_EC_TIMEOUT/1000+1; |
| 149 | time_before(jiffies, end_jiffies);) { |
| 150 | schedule(); |
| 151 | if (method_vpcr(handle, 1, &val)) |
| 152 | return -1; |
| 153 | if (val == 0) |
| 154 | return 0; |
| 155 | } |
| 156 | pr_err("timeout in write_ec_cmd\n"); |
| 157 | return -1; |
| 158 | } |
| 159 | /* the above is ACPI helpers */ |
| 160 | |
David Woodhouse | 58ac7aa | 2010-08-10 23:44:05 +0100 | [diff] [blame] | 161 | static int ideapad_dev_exists(int device) |
| 162 | { |
| 163 | acpi_status status; |
| 164 | union acpi_object in_param; |
| 165 | struct acpi_object_list input = { 1, &in_param }; |
| 166 | struct acpi_buffer output; |
| 167 | union acpi_object out_obj; |
| 168 | |
| 169 | output.length = sizeof(out_obj); |
| 170 | output.pointer = &out_obj; |
| 171 | |
| 172 | in_param.type = ACPI_TYPE_INTEGER; |
| 173 | in_param.integer.value = device + 1; |
| 174 | |
| 175 | status = acpi_evaluate_object(NULL, "\\_SB_.DECN", &input, &output); |
| 176 | if (ACPI_FAILURE(status)) { |
| 177 | printk(KERN_WARNING "IdeaPAD \\_SB_.DECN method failed %d. Is this an IdeaPAD?\n", status); |
| 178 | return -ENODEV; |
| 179 | } |
| 180 | if (out_obj.type != ACPI_TYPE_INTEGER) { |
| 181 | printk(KERN_WARNING "IdeaPAD \\_SB_.DECN method returned unexpected type\n"); |
| 182 | return -ENODEV; |
| 183 | } |
| 184 | return out_obj.integer.value; |
| 185 | } |
| 186 | |
| 187 | static int ideapad_dev_get_state(int device) |
| 188 | { |
| 189 | acpi_status status; |
| 190 | union acpi_object in_param; |
| 191 | struct acpi_object_list input = { 1, &in_param }; |
| 192 | struct acpi_buffer output; |
| 193 | union acpi_object out_obj; |
| 194 | |
| 195 | output.length = sizeof(out_obj); |
| 196 | output.pointer = &out_obj; |
| 197 | |
| 198 | in_param.type = ACPI_TYPE_INTEGER; |
| 199 | in_param.integer.value = device + 1; |
| 200 | |
| 201 | status = acpi_evaluate_object(NULL, "\\_SB_.GECN", &input, &output); |
| 202 | if (ACPI_FAILURE(status)) { |
| 203 | printk(KERN_WARNING "IdeaPAD \\_SB_.GECN method failed %d\n", status); |
| 204 | return -ENODEV; |
| 205 | } |
| 206 | if (out_obj.type != ACPI_TYPE_INTEGER) { |
| 207 | printk(KERN_WARNING "IdeaPAD \\_SB_.GECN method returned unexpected type\n"); |
| 208 | return -ENODEV; |
| 209 | } |
| 210 | return out_obj.integer.value; |
| 211 | } |
| 212 | |
| 213 | static int ideapad_dev_set_state(int device, int state) |
| 214 | { |
| 215 | acpi_status status; |
| 216 | union acpi_object in_params[2]; |
| 217 | struct acpi_object_list input = { 2, in_params }; |
| 218 | |
| 219 | in_params[0].type = ACPI_TYPE_INTEGER; |
| 220 | in_params[0].integer.value = device + 1; |
| 221 | in_params[1].type = ACPI_TYPE_INTEGER; |
| 222 | in_params[1].integer.value = state; |
| 223 | |
| 224 | status = acpi_evaluate_object(NULL, "\\_SB_.SECN", &input, NULL); |
| 225 | if (ACPI_FAILURE(status)) { |
| 226 | printk(KERN_WARNING "IdeaPAD \\_SB_.SECN method failed %d\n", status); |
| 227 | return -ENODEV; |
| 228 | } |
| 229 | return 0; |
| 230 | } |
| 231 | static ssize_t show_ideapad_cam(struct device *dev, |
| 232 | struct device_attribute *attr, |
| 233 | char *buf) |
| 234 | { |
| 235 | int state = ideapad_dev_get_state(IDEAPAD_DEV_CAMERA); |
| 236 | if (state < 0) |
| 237 | return state; |
| 238 | |
| 239 | return sprintf(buf, "%d\n", state); |
| 240 | } |
| 241 | |
| 242 | static ssize_t store_ideapad_cam(struct device *dev, |
| 243 | struct device_attribute *attr, |
| 244 | const char *buf, size_t count) |
| 245 | { |
| 246 | int ret, state; |
| 247 | |
| 248 | if (!count) |
| 249 | return 0; |
| 250 | if (sscanf(buf, "%i", &state) != 1) |
| 251 | return -EINVAL; |
David Woodhouse | 2016e4a | 2010-08-11 17:59:51 +0100 | [diff] [blame] | 252 | ret = ideapad_dev_set_state(IDEAPAD_DEV_CAMERA, !!state); |
David Woodhouse | 58ac7aa | 2010-08-10 23:44:05 +0100 | [diff] [blame] | 253 | if (ret < 0) |
| 254 | return ret; |
| 255 | return count; |
| 256 | } |
| 257 | |
| 258 | static DEVICE_ATTR(camera_power, 0644, show_ideapad_cam, store_ideapad_cam); |
| 259 | |
| 260 | static int ideapad_rfk_set(void *data, bool blocked) |
| 261 | { |
| 262 | int device = (unsigned long)data; |
| 263 | |
| 264 | if (device == IDEAPAD_DEV_KILLSW) |
| 265 | return -EINVAL; |
| 266 | return ideapad_dev_set_state(device, !blocked); |
| 267 | } |
| 268 | |
| 269 | static struct rfkill_ops ideapad_rfk_ops = { |
| 270 | .set_block = ideapad_rfk_set, |
| 271 | }; |
| 272 | |
David Woodhouse | ce32632 | 2010-08-11 17:59:35 +0100 | [diff] [blame] | 273 | static void ideapad_sync_rfk_state(struct acpi_device *adevice) |
David Woodhouse | 58ac7aa | 2010-08-10 23:44:05 +0100 | [diff] [blame] | 274 | { |
David Woodhouse | ce32632 | 2010-08-11 17:59:35 +0100 | [diff] [blame] | 275 | struct ideapad_private *priv = dev_get_drvdata(&adevice->dev); |
David Woodhouse | 58ac7aa | 2010-08-10 23:44:05 +0100 | [diff] [blame] | 276 | int hw_blocked = !ideapad_dev_get_state(IDEAPAD_DEV_KILLSW); |
| 277 | int i; |
| 278 | |
David Woodhouse | ce32632 | 2010-08-11 17:59:35 +0100 | [diff] [blame] | 279 | rfkill_set_hw_state(priv->rfk[IDEAPAD_DEV_KILLSW], hw_blocked); |
David Woodhouse | 58ac7aa | 2010-08-10 23:44:05 +0100 | [diff] [blame] | 280 | for (i = IDEAPAD_DEV_WLAN; i < IDEAPAD_DEV_KILLSW; i++) |
David Woodhouse | ce32632 | 2010-08-11 17:59:35 +0100 | [diff] [blame] | 281 | if (priv->rfk[i]) |
| 282 | rfkill_set_hw_state(priv->rfk[i], hw_blocked); |
David Woodhouse | 58ac7aa | 2010-08-10 23:44:05 +0100 | [diff] [blame] | 283 | if (hw_blocked) |
| 284 | return; |
| 285 | |
| 286 | for (i = IDEAPAD_DEV_WLAN; i < IDEAPAD_DEV_KILLSW; i++) |
David Woodhouse | ce32632 | 2010-08-11 17:59:35 +0100 | [diff] [blame] | 287 | if (priv->rfk[i]) |
| 288 | rfkill_set_sw_state(priv->rfk[i], !ideapad_dev_get_state(i)); |
David Woodhouse | 58ac7aa | 2010-08-10 23:44:05 +0100 | [diff] [blame] | 289 | } |
| 290 | |
David Woodhouse | ce32632 | 2010-08-11 17:59:35 +0100 | [diff] [blame] | 291 | static int ideapad_register_rfkill(struct acpi_device *adevice, int dev) |
David Woodhouse | 58ac7aa | 2010-08-10 23:44:05 +0100 | [diff] [blame] | 292 | { |
David Woodhouse | ce32632 | 2010-08-11 17:59:35 +0100 | [diff] [blame] | 293 | struct ideapad_private *priv = dev_get_drvdata(&adevice->dev); |
David Woodhouse | 58ac7aa | 2010-08-10 23:44:05 +0100 | [diff] [blame] | 294 | int ret; |
| 295 | |
David Woodhouse | ce32632 | 2010-08-11 17:59:35 +0100 | [diff] [blame] | 296 | priv->rfk[dev] = rfkill_alloc(ideapad_rfk_data[dev-1].name, &adevice->dev, |
| 297 | ideapad_rfk_data[dev-1].type, &ideapad_rfk_ops, |
| 298 | (void *)(long)dev); |
| 299 | if (!priv->rfk[dev]) |
David Woodhouse | 58ac7aa | 2010-08-10 23:44:05 +0100 | [diff] [blame] | 300 | return -ENOMEM; |
| 301 | |
David Woodhouse | ce32632 | 2010-08-11 17:59:35 +0100 | [diff] [blame] | 302 | ret = rfkill_register(priv->rfk[dev]); |
David Woodhouse | 58ac7aa | 2010-08-10 23:44:05 +0100 | [diff] [blame] | 303 | if (ret) { |
David Woodhouse | ce32632 | 2010-08-11 17:59:35 +0100 | [diff] [blame] | 304 | rfkill_destroy(priv->rfk[dev]); |
David Woodhouse | 58ac7aa | 2010-08-10 23:44:05 +0100 | [diff] [blame] | 305 | return ret; |
| 306 | } |
| 307 | return 0; |
| 308 | } |
| 309 | |
David Woodhouse | ce32632 | 2010-08-11 17:59:35 +0100 | [diff] [blame] | 310 | static void ideapad_unregister_rfkill(struct acpi_device *adevice, int dev) |
David Woodhouse | 58ac7aa | 2010-08-10 23:44:05 +0100 | [diff] [blame] | 311 | { |
David Woodhouse | ce32632 | 2010-08-11 17:59:35 +0100 | [diff] [blame] | 312 | struct ideapad_private *priv = dev_get_drvdata(&adevice->dev); |
| 313 | |
| 314 | if (!priv->rfk[dev]) |
David Woodhouse | 58ac7aa | 2010-08-10 23:44:05 +0100 | [diff] [blame] | 315 | return; |
| 316 | |
David Woodhouse | ce32632 | 2010-08-11 17:59:35 +0100 | [diff] [blame] | 317 | rfkill_unregister(priv->rfk[dev]); |
| 318 | rfkill_destroy(priv->rfk[dev]); |
David Woodhouse | 58ac7aa | 2010-08-10 23:44:05 +0100 | [diff] [blame] | 319 | } |
| 320 | |
| 321 | static const struct acpi_device_id ideapad_device_ids[] = { |
| 322 | { "VPC2004", 0}, |
| 323 | { "", 0}, |
| 324 | }; |
| 325 | MODULE_DEVICE_TABLE(acpi, ideapad_device_ids); |
| 326 | |
David Woodhouse | ce32632 | 2010-08-11 17:59:35 +0100 | [diff] [blame] | 327 | static int ideapad_acpi_add(struct acpi_device *adevice) |
David Woodhouse | 58ac7aa | 2010-08-10 23:44:05 +0100 | [diff] [blame] | 328 | { |
Ike Panhc | 6f8371c | 2010-10-01 15:39:14 +0800 | [diff] [blame^] | 329 | int i, cfg; |
David Woodhouse | 58ac7aa | 2010-08-10 23:44:05 +0100 | [diff] [blame] | 330 | int devs_present[5]; |
David Woodhouse | ce32632 | 2010-08-11 17:59:35 +0100 | [diff] [blame] | 331 | struct ideapad_private *priv; |
David Woodhouse | 58ac7aa | 2010-08-10 23:44:05 +0100 | [diff] [blame] | 332 | |
Ike Panhc | 6f8371c | 2010-10-01 15:39:14 +0800 | [diff] [blame^] | 333 | if (read_method_int(adevice->handle, "_CFG", &cfg)) |
| 334 | return -ENODEV; |
| 335 | |
David Woodhouse | 58ac7aa | 2010-08-10 23:44:05 +0100 | [diff] [blame] | 336 | for (i = IDEAPAD_DEV_CAMERA; i < IDEAPAD_DEV_KILLSW; i++) { |
| 337 | devs_present[i] = ideapad_dev_exists(i); |
| 338 | if (devs_present[i] < 0) |
| 339 | return devs_present[i]; |
| 340 | } |
| 341 | |
| 342 | /* The hardware switch is always present */ |
| 343 | devs_present[IDEAPAD_DEV_KILLSW] = 1; |
| 344 | |
David Woodhouse | ce32632 | 2010-08-11 17:59:35 +0100 | [diff] [blame] | 345 | priv = kzalloc(sizeof(*priv), GFP_KERNEL); |
| 346 | if (!priv) |
| 347 | return -ENOMEM; |
| 348 | |
David Woodhouse | 58ac7aa | 2010-08-10 23:44:05 +0100 | [diff] [blame] | 349 | if (devs_present[IDEAPAD_DEV_CAMERA]) { |
David Woodhouse | ce32632 | 2010-08-11 17:59:35 +0100 | [diff] [blame] | 350 | int ret = device_create_file(&adevice->dev, &dev_attr_camera_power); |
| 351 | if (ret) { |
| 352 | kfree(priv); |
David Woodhouse | 58ac7aa | 2010-08-10 23:44:05 +0100 | [diff] [blame] | 353 | return ret; |
David Woodhouse | ce32632 | 2010-08-11 17:59:35 +0100 | [diff] [blame] | 354 | } |
David Woodhouse | 58ac7aa | 2010-08-10 23:44:05 +0100 | [diff] [blame] | 355 | } |
| 356 | |
David Woodhouse | ce32632 | 2010-08-11 17:59:35 +0100 | [diff] [blame] | 357 | dev_set_drvdata(&adevice->dev, priv); |
David Woodhouse | 58ac7aa | 2010-08-10 23:44:05 +0100 | [diff] [blame] | 358 | for (i = IDEAPAD_DEV_WLAN; i <= IDEAPAD_DEV_KILLSW; i++) { |
| 359 | if (!devs_present[i]) |
| 360 | continue; |
| 361 | |
David Woodhouse | ce32632 | 2010-08-11 17:59:35 +0100 | [diff] [blame] | 362 | ideapad_register_rfkill(adevice, i); |
David Woodhouse | 58ac7aa | 2010-08-10 23:44:05 +0100 | [diff] [blame] | 363 | } |
David Woodhouse | ce32632 | 2010-08-11 17:59:35 +0100 | [diff] [blame] | 364 | ideapad_sync_rfk_state(adevice); |
David Woodhouse | 58ac7aa | 2010-08-10 23:44:05 +0100 | [diff] [blame] | 365 | return 0; |
| 366 | } |
| 367 | |
David Woodhouse | ce32632 | 2010-08-11 17:59:35 +0100 | [diff] [blame] | 368 | static int ideapad_acpi_remove(struct acpi_device *adevice, int type) |
David Woodhouse | 58ac7aa | 2010-08-10 23:44:05 +0100 | [diff] [blame] | 369 | { |
David Woodhouse | ce32632 | 2010-08-11 17:59:35 +0100 | [diff] [blame] | 370 | struct ideapad_private *priv = dev_get_drvdata(&adevice->dev); |
David Woodhouse | 58ac7aa | 2010-08-10 23:44:05 +0100 | [diff] [blame] | 371 | int i; |
David Woodhouse | ce32632 | 2010-08-11 17:59:35 +0100 | [diff] [blame] | 372 | |
| 373 | device_remove_file(&adevice->dev, &dev_attr_camera_power); |
| 374 | |
| 375 | for (i = IDEAPAD_DEV_WLAN; i <= IDEAPAD_DEV_KILLSW; i++) |
| 376 | ideapad_unregister_rfkill(adevice, i); |
| 377 | |
| 378 | dev_set_drvdata(&adevice->dev, NULL); |
| 379 | kfree(priv); |
David Woodhouse | 58ac7aa | 2010-08-10 23:44:05 +0100 | [diff] [blame] | 380 | return 0; |
| 381 | } |
| 382 | |
David Woodhouse | ce32632 | 2010-08-11 17:59:35 +0100 | [diff] [blame] | 383 | static void ideapad_acpi_notify(struct acpi_device *adevice, u32 event) |
David Woodhouse | 58ac7aa | 2010-08-10 23:44:05 +0100 | [diff] [blame] | 384 | { |
Ike Panhc | 8e7d354 | 2010-10-01 15:39:05 +0800 | [diff] [blame] | 385 | acpi_handle handle = adevice->handle; |
| 386 | unsigned long vpc1, vpc2, vpc_bit; |
| 387 | |
| 388 | if (read_ec_data(handle, 0x10, &vpc1)) |
| 389 | return; |
| 390 | if (read_ec_data(handle, 0x1A, &vpc2)) |
| 391 | return; |
| 392 | |
| 393 | vpc1 = (vpc2 << 8) | vpc1; |
| 394 | for (vpc_bit = 0; vpc_bit < 16; vpc_bit++) { |
| 395 | if (test_bit(vpc_bit, &vpc1)) { |
| 396 | if (vpc_bit == 9) |
| 397 | ideapad_sync_rfk_state(adevice); |
| 398 | } |
| 399 | } |
David Woodhouse | 58ac7aa | 2010-08-10 23:44:05 +0100 | [diff] [blame] | 400 | } |
| 401 | |
| 402 | static struct acpi_driver ideapad_acpi_driver = { |
| 403 | .name = "ideapad_acpi", |
| 404 | .class = "IdeaPad", |
| 405 | .ids = ideapad_device_ids, |
| 406 | .ops.add = ideapad_acpi_add, |
| 407 | .ops.remove = ideapad_acpi_remove, |
| 408 | .ops.notify = ideapad_acpi_notify, |
| 409 | .owner = THIS_MODULE, |
| 410 | }; |
| 411 | |
| 412 | |
| 413 | static int __init ideapad_acpi_module_init(void) |
| 414 | { |
| 415 | acpi_bus_register_driver(&ideapad_acpi_driver); |
| 416 | |
| 417 | return 0; |
| 418 | } |
| 419 | |
| 420 | |
| 421 | static void __exit ideapad_acpi_module_exit(void) |
| 422 | { |
| 423 | acpi_bus_unregister_driver(&ideapad_acpi_driver); |
| 424 | |
| 425 | } |
| 426 | |
| 427 | MODULE_AUTHOR("David Woodhouse <dwmw2@infradead.org>"); |
| 428 | MODULE_DESCRIPTION("IdeaPad ACPI Extras"); |
| 429 | MODULE_LICENSE("GPL"); |
| 430 | |
| 431 | module_init(ideapad_acpi_module_init); |
| 432 | module_exit(ideapad_acpi_module_exit); |