blob: 0c595410e78897e8b6b3f4b9e9c84e765ac0ba57 [file] [log] [blame]
David Woodhouse58ac7aa2010-08-10 23:44:05 +01001/*
Ike Panhca4b5a272010-12-13 18:00:48 +08002 * ideapad-laptop.c - Lenovo IdeaPad ACPI Extras
David Woodhouse58ac7aa2010-08-10 23:44:05 +01003 *
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
Joe Perches9ab23982011-03-29 15:21:43 -070023#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
24
David Woodhouse58ac7aa2010-08-10 23:44:05 +010025#include <linux/kernel.h>
26#include <linux/module.h>
27#include <linux/init.h>
28#include <linux/types.h>
29#include <acpi/acpi_bus.h>
30#include <acpi/acpi_drivers.h>
31#include <linux/rfkill.h>
Ike Panhc98ee6912010-12-13 18:00:15 +080032#include <linux/platform_device.h>
Ike Panhcf63409a2010-12-13 18:00:38 +080033#include <linux/input.h>
34#include <linux/input/sparse-keymap.h>
Ike Panhca4ecbb82011-06-30 19:50:52 +080035#include <linux/backlight.h>
36#include <linux/fb.h>
David Woodhouse58ac7aa2010-08-10 23:44:05 +010037
Ike Panhcc1f73652010-12-13 18:01:12 +080038#define IDEAPAD_RFKILL_DEV_NUM (3)
David Woodhouse58ac7aa2010-08-10 23:44:05 +010039
Ike Panhc3371f482011-06-30 19:50:40 +080040#define CFG_BT_BIT (16)
41#define CFG_3G_BIT (17)
42#define CFG_WIFI_BIT (18)
Ike Panhca84511f2011-06-30 19:50:47 +080043#define CFG_CAMERA_BIT (19)
Ike Panhc3371f482011-06-30 19:50:40 +080044
David Woodhousece326322010-08-11 17:59:35 +010045struct ideapad_private {
Ike Panhcc1f73652010-12-13 18:01:12 +080046 struct rfkill *rfk[IDEAPAD_RFKILL_DEV_NUM];
Ike Panhc98ee6912010-12-13 18:00:15 +080047 struct platform_device *platform_device;
Ike Panhcf63409a2010-12-13 18:00:38 +080048 struct input_dev *inputdev;
Ike Panhca4ecbb82011-06-30 19:50:52 +080049 struct backlight_device *blightdev;
Ike Panhc3371f482011-06-30 19:50:40 +080050 unsigned long cfg;
David Woodhouse58ac7aa2010-08-10 23:44:05 +010051};
52
Ike Panhcc1f73652010-12-13 18:01:12 +080053static acpi_handle ideapad_handle;
Ike Panhcbfa97b72010-10-01 15:40:22 +080054static bool no_bt_rfkill;
55module_param(no_bt_rfkill, bool, 0444);
56MODULE_PARM_DESC(no_bt_rfkill, "No rfkill for bluetooth.");
57
Ike Panhc6a09f212010-10-01 15:38:46 +080058/*
59 * ACPI Helpers
60 */
61#define IDEAPAD_EC_TIMEOUT (100) /* in ms */
62
63static int read_method_int(acpi_handle handle, const char *method, int *val)
64{
65 acpi_status status;
66 unsigned long long result;
67
68 status = acpi_evaluate_integer(handle, (char *)method, NULL, &result);
69 if (ACPI_FAILURE(status)) {
70 *val = -1;
71 return -1;
72 } else {
73 *val = result;
74 return 0;
75 }
76}
77
78static int method_vpcr(acpi_handle handle, int cmd, int *ret)
79{
80 acpi_status status;
81 unsigned long long result;
82 struct acpi_object_list params;
83 union acpi_object in_obj;
84
85 params.count = 1;
86 params.pointer = &in_obj;
87 in_obj.type = ACPI_TYPE_INTEGER;
88 in_obj.integer.value = cmd;
89
90 status = acpi_evaluate_integer(handle, "VPCR", &params, &result);
91
92 if (ACPI_FAILURE(status)) {
93 *ret = -1;
94 return -1;
95 } else {
96 *ret = result;
97 return 0;
98 }
99}
100
101static int method_vpcw(acpi_handle handle, int cmd, int data)
102{
103 struct acpi_object_list params;
104 union acpi_object in_obj[2];
105 acpi_status status;
106
107 params.count = 2;
108 params.pointer = in_obj;
109 in_obj[0].type = ACPI_TYPE_INTEGER;
110 in_obj[0].integer.value = cmd;
111 in_obj[1].type = ACPI_TYPE_INTEGER;
112 in_obj[1].integer.value = data;
113
114 status = acpi_evaluate_object(handle, "VPCW", &params, NULL);
115 if (status != AE_OK)
116 return -1;
117 return 0;
118}
119
120static int read_ec_data(acpi_handle handle, int cmd, unsigned long *data)
121{
122 int val;
123 unsigned long int end_jiffies;
124
125 if (method_vpcw(handle, 1, cmd))
126 return -1;
127
128 for (end_jiffies = jiffies+(HZ)*IDEAPAD_EC_TIMEOUT/1000+1;
129 time_before(jiffies, end_jiffies);) {
130 schedule();
131 if (method_vpcr(handle, 1, &val))
132 return -1;
133 if (val == 0) {
134 if (method_vpcr(handle, 0, &val))
135 return -1;
136 *data = val;
137 return 0;
138 }
139 }
140 pr_err("timeout in read_ec_cmd\n");
141 return -1;
142}
143
144static int write_ec_cmd(acpi_handle handle, int cmd, unsigned long data)
145{
146 int val;
147 unsigned long int end_jiffies;
148
149 if (method_vpcw(handle, 0, data))
150 return -1;
151 if (method_vpcw(handle, 1, cmd))
152 return -1;
153
154 for (end_jiffies = jiffies+(HZ)*IDEAPAD_EC_TIMEOUT/1000+1;
155 time_before(jiffies, end_jiffies);) {
156 schedule();
157 if (method_vpcr(handle, 1, &val))
158 return -1;
159 if (val == 0)
160 return 0;
161 }
162 pr_err("timeout in write_ec_cmd\n");
163 return -1;
164}
Ike Panhc6a09f212010-10-01 15:38:46 +0800165
Ike Panhca4b5a272010-12-13 18:00:48 +0800166/*
Ike Panhc3371f482011-06-30 19:50:40 +0800167 * sysfs
Ike Panhca4b5a272010-12-13 18:00:48 +0800168 */
David Woodhouse58ac7aa2010-08-10 23:44:05 +0100169static ssize_t show_ideapad_cam(struct device *dev,
170 struct device_attribute *attr,
171 char *buf)
172{
Ike Panhc26c81d52010-10-01 15:39:40 +0800173 unsigned long result;
David Woodhouse58ac7aa2010-08-10 23:44:05 +0100174
Ike Panhcc1f73652010-12-13 18:01:12 +0800175 if (read_ec_data(ideapad_handle, 0x1D, &result))
Ike Panhc26c81d52010-10-01 15:39:40 +0800176 return sprintf(buf, "-1\n");
177 return sprintf(buf, "%lu\n", result);
David Woodhouse58ac7aa2010-08-10 23:44:05 +0100178}
179
180static ssize_t store_ideapad_cam(struct device *dev,
181 struct device_attribute *attr,
182 const char *buf, size_t count)
183{
184 int ret, state;
185
186 if (!count)
187 return 0;
188 if (sscanf(buf, "%i", &state) != 1)
189 return -EINVAL;
Ike Panhcc1f73652010-12-13 18:01:12 +0800190 ret = write_ec_cmd(ideapad_handle, 0x1E, state);
David Woodhouse58ac7aa2010-08-10 23:44:05 +0100191 if (ret < 0)
192 return ret;
193 return count;
194}
195
196static DEVICE_ATTR(camera_power, 0644, show_ideapad_cam, store_ideapad_cam);
197
Ike Panhc3371f482011-06-30 19:50:40 +0800198static ssize_t show_ideapad_cfg(struct device *dev,
199 struct device_attribute *attr,
200 char *buf)
201{
202 struct ideapad_private *priv = dev_get_drvdata(dev);
203
204 return sprintf(buf, "0x%.8lX\n", priv->cfg);
205}
206
207static DEVICE_ATTR(cfg, 0444, show_ideapad_cfg, NULL);
208
209static struct attribute *ideapad_attributes[] = {
210 &dev_attr_camera_power.attr,
211 &dev_attr_cfg.attr,
212 NULL
213};
214
Ike Panhca84511f2011-06-30 19:50:47 +0800215static mode_t ideapad_is_visible(struct kobject *kobj,
216 struct attribute *attr,
217 int idx)
218{
219 struct device *dev = container_of(kobj, struct device, kobj);
220 struct ideapad_private *priv = dev_get_drvdata(dev);
221 bool supported;
222
223 if (attr == &dev_attr_camera_power.attr)
224 supported = test_bit(CFG_CAMERA_BIT, &(priv->cfg));
225 else
226 supported = true;
227
228 return supported ? attr->mode : 0;
229}
230
Ike Panhc3371f482011-06-30 19:50:40 +0800231static struct attribute_group ideapad_attribute_group = {
Ike Panhca84511f2011-06-30 19:50:47 +0800232 .is_visible = ideapad_is_visible,
Ike Panhc3371f482011-06-30 19:50:40 +0800233 .attrs = ideapad_attributes
234};
235
Ike Panhca4b5a272010-12-13 18:00:48 +0800236/*
237 * Rfkill
238 */
Ike Panhcc1f73652010-12-13 18:01:12 +0800239struct ideapad_rfk_data {
240 char *name;
241 int cfgbit;
242 int opcode;
243 int type;
244};
245
246const struct ideapad_rfk_data ideapad_rfk_data[] = {
Ike Panhc3371f482011-06-30 19:50:40 +0800247 { "ideapad_wlan", CFG_WIFI_BIT, 0x15, RFKILL_TYPE_WLAN },
248 { "ideapad_bluetooth", CFG_BT_BIT, 0x17, RFKILL_TYPE_BLUETOOTH },
249 { "ideapad_3g", CFG_3G_BIT, 0x20, RFKILL_TYPE_WWAN },
Ike Panhcc1f73652010-12-13 18:01:12 +0800250};
251
David Woodhouse58ac7aa2010-08-10 23:44:05 +0100252static int ideapad_rfk_set(void *data, bool blocked)
253{
Ike Panhcc1f73652010-12-13 18:01:12 +0800254 unsigned long opcode = (unsigned long)data;
David Woodhouse58ac7aa2010-08-10 23:44:05 +0100255
Ike Panhcc1f73652010-12-13 18:01:12 +0800256 return write_ec_cmd(ideapad_handle, opcode, !blocked);
David Woodhouse58ac7aa2010-08-10 23:44:05 +0100257}
258
259static struct rfkill_ops ideapad_rfk_ops = {
260 .set_block = ideapad_rfk_set,
261};
262
David Woodhousece326322010-08-11 17:59:35 +0100263static void ideapad_sync_rfk_state(struct acpi_device *adevice)
David Woodhouse58ac7aa2010-08-10 23:44:05 +0100264{
David Woodhousece326322010-08-11 17:59:35 +0100265 struct ideapad_private *priv = dev_get_drvdata(&adevice->dev);
Ike Panhc2b7266b2010-10-01 15:39:49 +0800266 unsigned long hw_blocked;
David Woodhouse58ac7aa2010-08-10 23:44:05 +0100267 int i;
268
Ike Panhcc1f73652010-12-13 18:01:12 +0800269 if (read_ec_data(ideapad_handle, 0x23, &hw_blocked))
Ike Panhc2b7266b2010-10-01 15:39:49 +0800270 return;
271 hw_blocked = !hw_blocked;
272
Ike Panhcc1f73652010-12-13 18:01:12 +0800273 for (i = 0; i < IDEAPAD_RFKILL_DEV_NUM; i++)
David Woodhousece326322010-08-11 17:59:35 +0100274 if (priv->rfk[i])
275 rfkill_set_hw_state(priv->rfk[i], hw_blocked);
David Woodhouse58ac7aa2010-08-10 23:44:05 +0100276}
277
Ike Panhca4b5a272010-12-13 18:00:48 +0800278static int __devinit ideapad_register_rfkill(struct acpi_device *adevice,
279 int dev)
David Woodhouse58ac7aa2010-08-10 23:44:05 +0100280{
David Woodhousece326322010-08-11 17:59:35 +0100281 struct ideapad_private *priv = dev_get_drvdata(&adevice->dev);
David Woodhouse58ac7aa2010-08-10 23:44:05 +0100282 int ret;
Ike Panhc2b7266b2010-10-01 15:39:49 +0800283 unsigned long sw_blocked;
David Woodhouse58ac7aa2010-08-10 23:44:05 +0100284
Ike Panhcbfa97b72010-10-01 15:40:22 +0800285 if (no_bt_rfkill &&
286 (ideapad_rfk_data[dev].type == RFKILL_TYPE_BLUETOOTH)) {
287 /* Force to enable bluetooth when no_bt_rfkill=1 */
Ike Panhcc1f73652010-12-13 18:01:12 +0800288 write_ec_cmd(ideapad_handle,
Ike Panhcbfa97b72010-10-01 15:40:22 +0800289 ideapad_rfk_data[dev].opcode, 1);
290 return 0;
291 }
292
Ike Panhc2b7266b2010-10-01 15:39:49 +0800293 priv->rfk[dev] = rfkill_alloc(ideapad_rfk_data[dev].name, &adevice->dev,
294 ideapad_rfk_data[dev].type, &ideapad_rfk_ops,
David Woodhousece326322010-08-11 17:59:35 +0100295 (void *)(long)dev);
296 if (!priv->rfk[dev])
David Woodhouse58ac7aa2010-08-10 23:44:05 +0100297 return -ENOMEM;
298
Ike Panhcc1f73652010-12-13 18:01:12 +0800299 if (read_ec_data(ideapad_handle, ideapad_rfk_data[dev].opcode-1,
Ike Panhc2b7266b2010-10-01 15:39:49 +0800300 &sw_blocked)) {
301 rfkill_init_sw_state(priv->rfk[dev], 0);
302 } else {
303 sw_blocked = !sw_blocked;
304 rfkill_init_sw_state(priv->rfk[dev], sw_blocked);
305 }
306
David Woodhousece326322010-08-11 17:59:35 +0100307 ret = rfkill_register(priv->rfk[dev]);
David Woodhouse58ac7aa2010-08-10 23:44:05 +0100308 if (ret) {
David Woodhousece326322010-08-11 17:59:35 +0100309 rfkill_destroy(priv->rfk[dev]);
David Woodhouse58ac7aa2010-08-10 23:44:05 +0100310 return ret;
311 }
312 return 0;
313}
314
Ike Panhca4ecbb82011-06-30 19:50:52 +0800315static void ideapad_unregister_rfkill(struct acpi_device *adevice, int dev)
David Woodhouse58ac7aa2010-08-10 23:44:05 +0100316{
David Woodhousece326322010-08-11 17:59:35 +0100317 struct ideapad_private *priv = dev_get_drvdata(&adevice->dev);
318
319 if (!priv->rfk[dev])
David Woodhouse58ac7aa2010-08-10 23:44:05 +0100320 return;
321
David Woodhousece326322010-08-11 17:59:35 +0100322 rfkill_unregister(priv->rfk[dev]);
323 rfkill_destroy(priv->rfk[dev]);
David Woodhouse58ac7aa2010-08-10 23:44:05 +0100324}
325
Ike Panhc98ee6912010-12-13 18:00:15 +0800326/*
327 * Platform device
328 */
Ike Panhc8693ae82010-12-13 18:01:01 +0800329static int __devinit ideapad_platform_init(struct ideapad_private *priv)
Ike Panhc98ee6912010-12-13 18:00:15 +0800330{
331 int result;
332
Ike Panhc8693ae82010-12-13 18:01:01 +0800333 priv->platform_device = platform_device_alloc("ideapad", -1);
334 if (!priv->platform_device)
Ike Panhc98ee6912010-12-13 18:00:15 +0800335 return -ENOMEM;
Ike Panhc8693ae82010-12-13 18:01:01 +0800336 platform_set_drvdata(priv->platform_device, priv);
Ike Panhc98ee6912010-12-13 18:00:15 +0800337
Ike Panhc8693ae82010-12-13 18:01:01 +0800338 result = platform_device_add(priv->platform_device);
Ike Panhc98ee6912010-12-13 18:00:15 +0800339 if (result)
340 goto fail_platform_device;
341
Ike Panhc8693ae82010-12-13 18:01:01 +0800342 result = sysfs_create_group(&priv->platform_device->dev.kobj,
Ike Panhcc9f718d2010-12-13 18:00:27 +0800343 &ideapad_attribute_group);
344 if (result)
345 goto fail_sysfs;
Ike Panhc98ee6912010-12-13 18:00:15 +0800346 return 0;
347
Ike Panhcc9f718d2010-12-13 18:00:27 +0800348fail_sysfs:
Ike Panhc8693ae82010-12-13 18:01:01 +0800349 platform_device_del(priv->platform_device);
Ike Panhc98ee6912010-12-13 18:00:15 +0800350fail_platform_device:
Ike Panhc8693ae82010-12-13 18:01:01 +0800351 platform_device_put(priv->platform_device);
Ike Panhc98ee6912010-12-13 18:00:15 +0800352 return result;
353}
354
Ike Panhc8693ae82010-12-13 18:01:01 +0800355static void ideapad_platform_exit(struct ideapad_private *priv)
Ike Panhc98ee6912010-12-13 18:00:15 +0800356{
Ike Panhc8693ae82010-12-13 18:01:01 +0800357 sysfs_remove_group(&priv->platform_device->dev.kobj,
Ike Panhcc9f718d2010-12-13 18:00:27 +0800358 &ideapad_attribute_group);
Ike Panhc8693ae82010-12-13 18:01:01 +0800359 platform_device_unregister(priv->platform_device);
Ike Panhc98ee6912010-12-13 18:00:15 +0800360}
Ike Panhc98ee6912010-12-13 18:00:15 +0800361
Ike Panhcf63409a2010-12-13 18:00:38 +0800362/*
363 * input device
364 */
365static const struct key_entry ideapad_keymap[] = {
366 { KE_KEY, 0x06, { KEY_SWITCHVIDEOMODE } },
367 { KE_KEY, 0x0D, { KEY_WLAN } },
368 { KE_END, 0 },
369};
370
Ike Panhc8693ae82010-12-13 18:01:01 +0800371static int __devinit ideapad_input_init(struct ideapad_private *priv)
Ike Panhcf63409a2010-12-13 18:00:38 +0800372{
373 struct input_dev *inputdev;
374 int error;
375
376 inputdev = input_allocate_device();
377 if (!inputdev) {
378 pr_info("Unable to allocate input device\n");
379 return -ENOMEM;
380 }
381
382 inputdev->name = "Ideapad extra buttons";
383 inputdev->phys = "ideapad/input0";
384 inputdev->id.bustype = BUS_HOST;
Ike Panhc8693ae82010-12-13 18:01:01 +0800385 inputdev->dev.parent = &priv->platform_device->dev;
Ike Panhcf63409a2010-12-13 18:00:38 +0800386
387 error = sparse_keymap_setup(inputdev, ideapad_keymap, NULL);
388 if (error) {
389 pr_err("Unable to setup input device keymap\n");
390 goto err_free_dev;
391 }
392
393 error = input_register_device(inputdev);
394 if (error) {
395 pr_err("Unable to register input device\n");
396 goto err_free_keymap;
397 }
398
Ike Panhc8693ae82010-12-13 18:01:01 +0800399 priv->inputdev = inputdev;
Ike Panhcf63409a2010-12-13 18:00:38 +0800400 return 0;
401
402err_free_keymap:
403 sparse_keymap_free(inputdev);
404err_free_dev:
405 input_free_device(inputdev);
406 return error;
407}
408
Axel Lin7451a552011-07-27 15:27:34 +0800409static void ideapad_input_exit(struct ideapad_private *priv)
Ike Panhcf63409a2010-12-13 18:00:38 +0800410{
Ike Panhc8693ae82010-12-13 18:01:01 +0800411 sparse_keymap_free(priv->inputdev);
412 input_unregister_device(priv->inputdev);
413 priv->inputdev = NULL;
Ike Panhcf63409a2010-12-13 18:00:38 +0800414}
415
Ike Panhc8693ae82010-12-13 18:01:01 +0800416static void ideapad_input_report(struct ideapad_private *priv,
417 unsigned long scancode)
Ike Panhcf63409a2010-12-13 18:00:38 +0800418{
Ike Panhc8693ae82010-12-13 18:01:01 +0800419 sparse_keymap_report_event(priv->inputdev, scancode, 1, true);
Ike Panhcf63409a2010-12-13 18:00:38 +0800420}
Ike Panhcf63409a2010-12-13 18:00:38 +0800421
Ike Panhca4b5a272010-12-13 18:00:48 +0800422/*
Ike Panhca4ecbb82011-06-30 19:50:52 +0800423 * backlight
424 */
425static int ideapad_backlight_get_brightness(struct backlight_device *blightdev)
426{
427 unsigned long now;
428
429 if (read_ec_data(ideapad_handle, 0x12, &now))
430 return -EIO;
431 return now;
432}
433
434static int ideapad_backlight_update_status(struct backlight_device *blightdev)
435{
436 if (write_ec_cmd(ideapad_handle, 0x13, blightdev->props.brightness))
437 return -EIO;
438 if (write_ec_cmd(ideapad_handle, 0x33,
439 blightdev->props.power == FB_BLANK_POWERDOWN ? 0 : 1))
440 return -EIO;
441
442 return 0;
443}
444
445static const struct backlight_ops ideapad_backlight_ops = {
446 .get_brightness = ideapad_backlight_get_brightness,
447 .update_status = ideapad_backlight_update_status,
448};
449
450static int ideapad_backlight_init(struct ideapad_private *priv)
451{
452 struct backlight_device *blightdev;
453 struct backlight_properties props;
454 unsigned long max, now, power;
455
456 if (read_ec_data(ideapad_handle, 0x11, &max))
457 return -EIO;
458 if (read_ec_data(ideapad_handle, 0x12, &now))
459 return -EIO;
460 if (read_ec_data(ideapad_handle, 0x18, &power))
461 return -EIO;
462
463 memset(&props, 0, sizeof(struct backlight_properties));
464 props.max_brightness = max;
465 props.type = BACKLIGHT_PLATFORM;
466 blightdev = backlight_device_register("ideapad",
467 &priv->platform_device->dev,
468 priv,
469 &ideapad_backlight_ops,
470 &props);
471 if (IS_ERR(blightdev)) {
472 pr_err("Could not register backlight device\n");
473 return PTR_ERR(blightdev);
474 }
475
476 priv->blightdev = blightdev;
477 blightdev->props.brightness = now;
478 blightdev->props.power = power ? FB_BLANK_UNBLANK : FB_BLANK_POWERDOWN;
479 backlight_update_status(blightdev);
480
481 return 0;
482}
483
484static void ideapad_backlight_exit(struct ideapad_private *priv)
485{
486 if (priv->blightdev)
487 backlight_device_unregister(priv->blightdev);
488 priv->blightdev = NULL;
489}
490
491static void ideapad_backlight_notify_power(struct ideapad_private *priv)
492{
493 unsigned long power;
494 struct backlight_device *blightdev = priv->blightdev;
495
496 if (read_ec_data(ideapad_handle, 0x18, &power))
497 return;
498 blightdev->props.power = power ? FB_BLANK_UNBLANK : FB_BLANK_POWERDOWN;
499}
500
501static void ideapad_backlight_notify_brightness(struct ideapad_private *priv)
502{
503 unsigned long now;
504
505 /* if we control brightness via acpi video driver */
506 if (priv->blightdev == NULL) {
507 read_ec_data(ideapad_handle, 0x12, &now);
508 return;
509 }
510
511 backlight_force_update(priv->blightdev, BACKLIGHT_UPDATE_HOTKEY);
512}
513
514/*
Ike Panhca4b5a272010-12-13 18:00:48 +0800515 * module init/exit
516 */
David Woodhouse58ac7aa2010-08-10 23:44:05 +0100517static const struct acpi_device_id ideapad_device_ids[] = {
518 { "VPC2004", 0},
519 { "", 0},
520};
521MODULE_DEVICE_TABLE(acpi, ideapad_device_ids);
522
Ike Panhca4b5a272010-12-13 18:00:48 +0800523static int __devinit ideapad_acpi_add(struct acpi_device *adevice)
David Woodhouse58ac7aa2010-08-10 23:44:05 +0100524{
Ike Panhc3371f482011-06-30 19:50:40 +0800525 int ret, i;
526 unsigned long cfg;
David Woodhousece326322010-08-11 17:59:35 +0100527 struct ideapad_private *priv;
David Woodhouse58ac7aa2010-08-10 23:44:05 +0100528
Ike Panhc3371f482011-06-30 19:50:40 +0800529 if (read_method_int(adevice->handle, "_CFG", (int *)&cfg))
Ike Panhc6f8371c2010-10-01 15:39:14 +0800530 return -ENODEV;
531
David Woodhousece326322010-08-11 17:59:35 +0100532 priv = kzalloc(sizeof(*priv), GFP_KERNEL);
533 if (!priv)
534 return -ENOMEM;
Ike Panhcc9f718d2010-12-13 18:00:27 +0800535 dev_set_drvdata(&adevice->dev, priv);
Ike Panhcc1f73652010-12-13 18:01:12 +0800536 ideapad_handle = adevice->handle;
Ike Panhc3371f482011-06-30 19:50:40 +0800537 priv->cfg = cfg;
Ike Panhc98ee6912010-12-13 18:00:15 +0800538
Ike Panhc8693ae82010-12-13 18:01:01 +0800539 ret = ideapad_platform_init(priv);
Ike Panhc98ee6912010-12-13 18:00:15 +0800540 if (ret)
541 goto platform_failed;
David Woodhousece326322010-08-11 17:59:35 +0100542
Ike Panhc8693ae82010-12-13 18:01:01 +0800543 ret = ideapad_input_init(priv);
Ike Panhcf63409a2010-12-13 18:00:38 +0800544 if (ret)
545 goto input_failed;
546
Ike Panhcc1f73652010-12-13 18:01:12 +0800547 for (i = 0; i < IDEAPAD_RFKILL_DEV_NUM; i++) {
Ike Panhc3371f482011-06-30 19:50:40 +0800548 if (test_bit(ideapad_rfk_data[i].cfgbit, &cfg))
Ike Panhcc9f718d2010-12-13 18:00:27 +0800549 ideapad_register_rfkill(adevice, i);
Ike Panhcc1f73652010-12-13 18:01:12 +0800550 else
551 priv->rfk[i] = NULL;
David Woodhouse58ac7aa2010-08-10 23:44:05 +0100552 }
David Woodhousece326322010-08-11 17:59:35 +0100553 ideapad_sync_rfk_state(adevice);
Ike Panhcc9f718d2010-12-13 18:00:27 +0800554
Ike Panhca4ecbb82011-06-30 19:50:52 +0800555 if (!acpi_video_backlight_support()) {
556 ret = ideapad_backlight_init(priv);
557 if (ret && ret != -ENODEV)
558 goto backlight_failed;
559 }
560
David Woodhouse58ac7aa2010-08-10 23:44:05 +0100561 return 0;
Ike Panhc98ee6912010-12-13 18:00:15 +0800562
Ike Panhca4ecbb82011-06-30 19:50:52 +0800563backlight_failed:
564 for (i = 0; i < IDEAPAD_RFKILL_DEV_NUM; i++)
565 ideapad_unregister_rfkill(adevice, i);
Axel Lin7451a552011-07-27 15:27:34 +0800566 ideapad_input_exit(priv);
Ike Panhcf63409a2010-12-13 18:00:38 +0800567input_failed:
Ike Panhc8693ae82010-12-13 18:01:01 +0800568 ideapad_platform_exit(priv);
Ike Panhc98ee6912010-12-13 18:00:15 +0800569platform_failed:
570 kfree(priv);
571 return ret;
David Woodhouse58ac7aa2010-08-10 23:44:05 +0100572}
573
Ike Panhca4b5a272010-12-13 18:00:48 +0800574static int __devexit ideapad_acpi_remove(struct acpi_device *adevice, int type)
David Woodhouse58ac7aa2010-08-10 23:44:05 +0100575{
David Woodhousece326322010-08-11 17:59:35 +0100576 struct ideapad_private *priv = dev_get_drvdata(&adevice->dev);
David Woodhouse58ac7aa2010-08-10 23:44:05 +0100577 int i;
David Woodhousece326322010-08-11 17:59:35 +0100578
Ike Panhca4ecbb82011-06-30 19:50:52 +0800579 ideapad_backlight_exit(priv);
Ike Panhcc1f73652010-12-13 18:01:12 +0800580 for (i = 0; i < IDEAPAD_RFKILL_DEV_NUM; i++)
David Woodhousece326322010-08-11 17:59:35 +0100581 ideapad_unregister_rfkill(adevice, i);
Ike Panhc8693ae82010-12-13 18:01:01 +0800582 ideapad_input_exit(priv);
583 ideapad_platform_exit(priv);
David Woodhousece326322010-08-11 17:59:35 +0100584 dev_set_drvdata(&adevice->dev, NULL);
585 kfree(priv);
Ike Panhcc9f718d2010-12-13 18:00:27 +0800586
David Woodhouse58ac7aa2010-08-10 23:44:05 +0100587 return 0;
588}
589
David Woodhousece326322010-08-11 17:59:35 +0100590static void ideapad_acpi_notify(struct acpi_device *adevice, u32 event)
David Woodhouse58ac7aa2010-08-10 23:44:05 +0100591{
Ike Panhc8693ae82010-12-13 18:01:01 +0800592 struct ideapad_private *priv = dev_get_drvdata(&adevice->dev);
Ike Panhc8e7d3542010-10-01 15:39:05 +0800593 acpi_handle handle = adevice->handle;
594 unsigned long vpc1, vpc2, vpc_bit;
595
596 if (read_ec_data(handle, 0x10, &vpc1))
597 return;
598 if (read_ec_data(handle, 0x1A, &vpc2))
599 return;
600
601 vpc1 = (vpc2 << 8) | vpc1;
602 for (vpc_bit = 0; vpc_bit < 16; vpc_bit++) {
603 if (test_bit(vpc_bit, &vpc1)) {
Ike Panhca4ecbb82011-06-30 19:50:52 +0800604 switch (vpc_bit) {
605 case 9:
Ike Panhc8e7d3542010-10-01 15:39:05 +0800606 ideapad_sync_rfk_state(adevice);
Ike Panhca4ecbb82011-06-30 19:50:52 +0800607 break;
608 case 4:
609 ideapad_backlight_notify_brightness(priv);
610 break;
611 case 2:
612 ideapad_backlight_notify_power(priv);
613 break;
614 default:
Ike Panhc8693ae82010-12-13 18:01:01 +0800615 ideapad_input_report(priv, vpc_bit);
Ike Panhca4ecbb82011-06-30 19:50:52 +0800616 }
Ike Panhc8e7d3542010-10-01 15:39:05 +0800617 }
618 }
David Woodhouse58ac7aa2010-08-10 23:44:05 +0100619}
620
621static struct acpi_driver ideapad_acpi_driver = {
622 .name = "ideapad_acpi",
623 .class = "IdeaPad",
624 .ids = ideapad_device_ids,
625 .ops.add = ideapad_acpi_add,
626 .ops.remove = ideapad_acpi_remove,
627 .ops.notify = ideapad_acpi_notify,
628 .owner = THIS_MODULE,
629};
630
David Woodhouse58ac7aa2010-08-10 23:44:05 +0100631static int __init ideapad_acpi_module_init(void)
632{
Ike Panhca4b5a272010-12-13 18:00:48 +0800633 return acpi_bus_register_driver(&ideapad_acpi_driver);
David Woodhouse58ac7aa2010-08-10 23:44:05 +0100634}
635
David Woodhouse58ac7aa2010-08-10 23:44:05 +0100636static void __exit ideapad_acpi_module_exit(void)
637{
638 acpi_bus_unregister_driver(&ideapad_acpi_driver);
David Woodhouse58ac7aa2010-08-10 23:44:05 +0100639}
640
641MODULE_AUTHOR("David Woodhouse <dwmw2@infradead.org>");
642MODULE_DESCRIPTION("IdeaPad ACPI Extras");
643MODULE_LICENSE("GPL");
644
645module_init(ideapad_acpi_module_init);
646module_exit(ideapad_acpi_module_exit);