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1/*
2 * ideapad-laptop.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#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
24
25#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>
32#include <linux/platform_device.h>
33#include <linux/input.h>
34#include <linux/input/sparse-keymap.h>
35#include <linux/backlight.h>
36#include <linux/fb.h>
37
38#define IDEAPAD_RFKILL_DEV_NUM (3)
39
40#define CFG_BT_BIT (16)
41#define CFG_3G_BIT (17)
42#define CFG_WIFI_BIT (18)
43#define CFG_CAMERA_BIT (19)
44
45struct ideapad_private {
46 struct rfkill *rfk[IDEAPAD_RFKILL_DEV_NUM];
47 struct platform_device *platform_device;
48 struct input_dev *inputdev;
49 struct backlight_device *blightdev;
50 unsigned long cfg;
51};
52
53static acpi_handle ideapad_handle;
54static bool no_bt_rfkill;
55module_param(no_bt_rfkill, bool, 0444);
56MODULE_PARM_DESC(no_bt_rfkill, "No rfkill for bluetooth.");
57
58/*
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", ¶ms, &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", ¶ms, 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}
165
166/*
167 * sysfs
168 */
169static ssize_t show_ideapad_cam(struct device *dev,
170 struct device_attribute *attr,
171 char *buf)
172{
173 unsigned long result;
174
175 if (read_ec_data(ideapad_handle, 0x1D, &result))
176 return sprintf(buf, "-1\n");
177 return sprintf(buf, "%lu\n", result);
178}
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;
190 ret = write_ec_cmd(ideapad_handle, 0x1E, state);
191 if (ret < 0)
192 return ret;
193 return count;
194}
195
196static DEVICE_ATTR(camera_power, 0644, show_ideapad_cam, store_ideapad_cam);
197
198static 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
215static 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
231static struct attribute_group ideapad_attribute_group = {
232 .is_visible = ideapad_is_visible,
233 .attrs = ideapad_attributes
234};
235
236/*
237 * Rfkill
238 */
239struct 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[] = {
247 { "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 },
250};
251
252static int ideapad_rfk_set(void *data, bool blocked)
253{
254 unsigned long opcode = (unsigned long)data;
255
256 return write_ec_cmd(ideapad_handle, opcode, !blocked);
257}
258
259static struct rfkill_ops ideapad_rfk_ops = {
260 .set_block = ideapad_rfk_set,
261};
262
263static void ideapad_sync_rfk_state(struct acpi_device *adevice)
264{
265 struct ideapad_private *priv = dev_get_drvdata(&adevice->dev);
266 unsigned long hw_blocked;
267 int i;
268
269 if (read_ec_data(ideapad_handle, 0x23, &hw_blocked))
270 return;
271 hw_blocked = !hw_blocked;
272
273 for (i = 0; i < IDEAPAD_RFKILL_DEV_NUM; i++)
274 if (priv->rfk[i])
275 rfkill_set_hw_state(priv->rfk[i], hw_blocked);
276}
277
278static int __devinit ideapad_register_rfkill(struct acpi_device *adevice,
279 int dev)
280{
281 struct ideapad_private *priv = dev_get_drvdata(&adevice->dev);
282 int ret;
283 unsigned long sw_blocked;
284
285 if (no_bt_rfkill &&
286 (ideapad_rfk_data[dev].type == RFKILL_TYPE_BLUETOOTH)) {
287 /* Force to enable bluetooth when no_bt_rfkill=1 */
288 write_ec_cmd(ideapad_handle,
289 ideapad_rfk_data[dev].opcode, 1);
290 return 0;
291 }
292
293 priv->rfk[dev] = rfkill_alloc(ideapad_rfk_data[dev].name, &adevice->dev,
294 ideapad_rfk_data[dev].type, &ideapad_rfk_ops,
295 (void *)(long)dev);
296 if (!priv->rfk[dev])
297 return -ENOMEM;
298
299 if (read_ec_data(ideapad_handle, ideapad_rfk_data[dev].opcode-1,
300 &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
307 ret = rfkill_register(priv->rfk[dev]);
308 if (ret) {
309 rfkill_destroy(priv->rfk[dev]);
310 return ret;
311 }
312 return 0;
313}
314
315static void ideapad_unregister_rfkill(struct acpi_device *adevice, int dev)
316{
317 struct ideapad_private *priv = dev_get_drvdata(&adevice->dev);
318
319 if (!priv->rfk[dev])
320 return;
321
322 rfkill_unregister(priv->rfk[dev]);
323 rfkill_destroy(priv->rfk[dev]);
324}
325
326/*
327 * Platform device
328 */
329static int __devinit ideapad_platform_init(struct ideapad_private *priv)
330{
331 int result;
332
333 priv->platform_device = platform_device_alloc("ideapad", -1);
334 if (!priv->platform_device)
335 return -ENOMEM;
336 platform_set_drvdata(priv->platform_device, priv);
337
338 result = platform_device_add(priv->platform_device);
339 if (result)
340 goto fail_platform_device;
341
342 result = sysfs_create_group(&priv->platform_device->dev.kobj,
343 &ideapad_attribute_group);
344 if (result)
345 goto fail_sysfs;
346 return 0;
347
348fail_sysfs:
349 platform_device_del(priv->platform_device);
350fail_platform_device:
351 platform_device_put(priv->platform_device);
352 return result;
353}
354
355static void ideapad_platform_exit(struct ideapad_private *priv)
356{
357 sysfs_remove_group(&priv->platform_device->dev.kobj,
358 &ideapad_attribute_group);
359 platform_device_unregister(priv->platform_device);
360}
361
362/*
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
371static int __devinit ideapad_input_init(struct ideapad_private *priv)
372{
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;
385 inputdev->dev.parent = &priv->platform_device->dev;
386
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
399 priv->inputdev = inputdev;
400 return 0;
401
402err_free_keymap:
403 sparse_keymap_free(inputdev);
404err_free_dev:
405 input_free_device(inputdev);
406 return error;
407}
408
409static void ideapad_input_exit(struct ideapad_private *priv)
410{
411 sparse_keymap_free(priv->inputdev);
412 input_unregister_device(priv->inputdev);
413 priv->inputdev = NULL;
414}
415
416static void ideapad_input_report(struct ideapad_private *priv,
417 unsigned long scancode)
418{
419 sparse_keymap_report_event(priv->inputdev, scancode, 1, true);
420}
421
422/*
423 * 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/*
515 * module init/exit
516 */
517static const struct acpi_device_id ideapad_device_ids[] = {
518 { "VPC2004", 0},
519 { "", 0},
520};
521MODULE_DEVICE_TABLE(acpi, ideapad_device_ids);
522
523static int __devinit ideapad_acpi_add(struct acpi_device *adevice)
524{
525 int ret, i;
526 unsigned long cfg;
527 struct ideapad_private *priv;
528
529 if (read_method_int(adevice->handle, "_CFG", (int *)&cfg))
530 return -ENODEV;
531
532 priv = kzalloc(sizeof(*priv), GFP_KERNEL);
533 if (!priv)
534 return -ENOMEM;
535 dev_set_drvdata(&adevice->dev, priv);
536 ideapad_handle = adevice->handle;
537 priv->cfg = cfg;
538
539 ret = ideapad_platform_init(priv);
540 if (ret)
541 goto platform_failed;
542
543 ret = ideapad_input_init(priv);
544 if (ret)
545 goto input_failed;
546
547 for (i = 0; i < IDEAPAD_RFKILL_DEV_NUM; i++) {
548 if (test_bit(ideapad_rfk_data[i].cfgbit, &cfg))
549 ideapad_register_rfkill(adevice, i);
550 else
551 priv->rfk[i] = NULL;
552 }
553 ideapad_sync_rfk_state(adevice);
554
555 if (!acpi_video_backlight_support()) {
556 ret = ideapad_backlight_init(priv);
557 if (ret && ret != -ENODEV)
558 goto backlight_failed;
559 }
560
561 return 0;
562
563backlight_failed:
564 for (i = 0; i < IDEAPAD_RFKILL_DEV_NUM; i++)
565 ideapad_unregister_rfkill(adevice, i);
566 ideapad_input_exit(priv);
567input_failed:
568 ideapad_platform_exit(priv);
569platform_failed:
570 kfree(priv);
571 return ret;
572}
573
574static int __devexit ideapad_acpi_remove(struct acpi_device *adevice, int type)
575{
576 struct ideapad_private *priv = dev_get_drvdata(&adevice->dev);
577 int i;
578
579 ideapad_backlight_exit(priv);
580 for (i = 0; i < IDEAPAD_RFKILL_DEV_NUM; i++)
581 ideapad_unregister_rfkill(adevice, i);
582 ideapad_input_exit(priv);
583 ideapad_platform_exit(priv);
584 dev_set_drvdata(&adevice->dev, NULL);
585 kfree(priv);
586
587 return 0;
588}
589
590static void ideapad_acpi_notify(struct acpi_device *adevice, u32 event)
591{
592 struct ideapad_private *priv = dev_get_drvdata(&adevice->dev);
593 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)) {
604 switch (vpc_bit) {
605 case 9:
606 ideapad_sync_rfk_state(adevice);
607 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:
615 ideapad_input_report(priv, vpc_bit);
616 }
617 }
618 }
619}
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
631static int __init ideapad_acpi_module_init(void)
632{
633 return acpi_bus_register_driver(&ideapad_acpi_driver);
634}
635
636static void __exit ideapad_acpi_module_exit(void)
637{
638 acpi_bus_unregister_driver(&ideapad_acpi_driver);
639}
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);
1/*
2 * ideapad-laptop.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#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
24
25#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>
32#include <linux/platform_device.h>
33#include <linux/input.h>
34#include <linux/input/sparse-keymap.h>
35#include <linux/backlight.h>
36#include <linux/fb.h>
37#include <linux/debugfs.h>
38#include <linux/seq_file.h>
39
40#define IDEAPAD_RFKILL_DEV_NUM (3)
41
42#define CFG_BT_BIT (16)
43#define CFG_3G_BIT (17)
44#define CFG_WIFI_BIT (18)
45#define CFG_CAMERA_BIT (19)
46
47enum {
48 VPCCMD_R_VPC1 = 0x10,
49 VPCCMD_R_BL_MAX,
50 VPCCMD_R_BL,
51 VPCCMD_W_BL,
52 VPCCMD_R_WIFI,
53 VPCCMD_W_WIFI,
54 VPCCMD_R_BT,
55 VPCCMD_W_BT,
56 VPCCMD_R_BL_POWER,
57 VPCCMD_R_NOVO,
58 VPCCMD_R_VPC2,
59 VPCCMD_R_TOUCHPAD,
60 VPCCMD_W_TOUCHPAD,
61 VPCCMD_R_CAMERA,
62 VPCCMD_W_CAMERA,
63 VPCCMD_R_3G,
64 VPCCMD_W_3G,
65 VPCCMD_R_ODD, /* 0x21 */
66 VPCCMD_R_RF = 0x23,
67 VPCCMD_W_RF,
68 VPCCMD_W_BL_POWER = 0x33,
69};
70
71struct ideapad_private {
72 struct rfkill *rfk[IDEAPAD_RFKILL_DEV_NUM];
73 struct platform_device *platform_device;
74 struct input_dev *inputdev;
75 struct backlight_device *blightdev;
76 struct dentry *debug;
77 unsigned long cfg;
78};
79
80static acpi_handle ideapad_handle;
81static struct ideapad_private *ideapad_priv;
82static bool no_bt_rfkill;
83module_param(no_bt_rfkill, bool, 0444);
84MODULE_PARM_DESC(no_bt_rfkill, "No rfkill for bluetooth.");
85
86/*
87 * ACPI Helpers
88 */
89#define IDEAPAD_EC_TIMEOUT (100) /* in ms */
90
91static int read_method_int(acpi_handle handle, const char *method, int *val)
92{
93 acpi_status status;
94 unsigned long long result;
95
96 status = acpi_evaluate_integer(handle, (char *)method, NULL, &result);
97 if (ACPI_FAILURE(status)) {
98 *val = -1;
99 return -1;
100 } else {
101 *val = result;
102 return 0;
103 }
104}
105
106static int method_vpcr(acpi_handle handle, int cmd, int *ret)
107{
108 acpi_status status;
109 unsigned long long result;
110 struct acpi_object_list params;
111 union acpi_object in_obj;
112
113 params.count = 1;
114 params.pointer = &in_obj;
115 in_obj.type = ACPI_TYPE_INTEGER;
116 in_obj.integer.value = cmd;
117
118 status = acpi_evaluate_integer(handle, "VPCR", ¶ms, &result);
119
120 if (ACPI_FAILURE(status)) {
121 *ret = -1;
122 return -1;
123 } else {
124 *ret = result;
125 return 0;
126 }
127}
128
129static int method_vpcw(acpi_handle handle, int cmd, int data)
130{
131 struct acpi_object_list params;
132 union acpi_object in_obj[2];
133 acpi_status status;
134
135 params.count = 2;
136 params.pointer = in_obj;
137 in_obj[0].type = ACPI_TYPE_INTEGER;
138 in_obj[0].integer.value = cmd;
139 in_obj[1].type = ACPI_TYPE_INTEGER;
140 in_obj[1].integer.value = data;
141
142 status = acpi_evaluate_object(handle, "VPCW", ¶ms, NULL);
143 if (status != AE_OK)
144 return -1;
145 return 0;
146}
147
148static int read_ec_data(acpi_handle handle, int cmd, unsigned long *data)
149{
150 int val;
151 unsigned long int end_jiffies;
152
153 if (method_vpcw(handle, 1, cmd))
154 return -1;
155
156 for (end_jiffies = jiffies+(HZ)*IDEAPAD_EC_TIMEOUT/1000+1;
157 time_before(jiffies, end_jiffies);) {
158 schedule();
159 if (method_vpcr(handle, 1, &val))
160 return -1;
161 if (val == 0) {
162 if (method_vpcr(handle, 0, &val))
163 return -1;
164 *data = val;
165 return 0;
166 }
167 }
168 pr_err("timeout in read_ec_cmd\n");
169 return -1;
170}
171
172static int write_ec_cmd(acpi_handle handle, int cmd, unsigned long data)
173{
174 int val;
175 unsigned long int end_jiffies;
176
177 if (method_vpcw(handle, 0, data))
178 return -1;
179 if (method_vpcw(handle, 1, cmd))
180 return -1;
181
182 for (end_jiffies = jiffies+(HZ)*IDEAPAD_EC_TIMEOUT/1000+1;
183 time_before(jiffies, end_jiffies);) {
184 schedule();
185 if (method_vpcr(handle, 1, &val))
186 return -1;
187 if (val == 0)
188 return 0;
189 }
190 pr_err("timeout in write_ec_cmd\n");
191 return -1;
192}
193
194/*
195 * debugfs
196 */
197static int debugfs_status_show(struct seq_file *s, void *data)
198{
199 unsigned long value;
200
201 if (!read_ec_data(ideapad_handle, VPCCMD_R_BL_MAX, &value))
202 seq_printf(s, "Backlight max:\t%lu\n", value);
203 if (!read_ec_data(ideapad_handle, VPCCMD_R_BL, &value))
204 seq_printf(s, "Backlight now:\t%lu\n", value);
205 if (!read_ec_data(ideapad_handle, VPCCMD_R_BL_POWER, &value))
206 seq_printf(s, "BL power value:\t%s\n", value ? "On" : "Off");
207 seq_printf(s, "=====================\n");
208
209 if (!read_ec_data(ideapad_handle, VPCCMD_R_RF, &value))
210 seq_printf(s, "Radio status:\t%s(%lu)\n",
211 value ? "On" : "Off", value);
212 if (!read_ec_data(ideapad_handle, VPCCMD_R_WIFI, &value))
213 seq_printf(s, "Wifi status:\t%s(%lu)\n",
214 value ? "On" : "Off", value);
215 if (!read_ec_data(ideapad_handle, VPCCMD_R_BT, &value))
216 seq_printf(s, "BT status:\t%s(%lu)\n",
217 value ? "On" : "Off", value);
218 if (!read_ec_data(ideapad_handle, VPCCMD_R_3G, &value))
219 seq_printf(s, "3G status:\t%s(%lu)\n",
220 value ? "On" : "Off", value);
221 seq_printf(s, "=====================\n");
222
223 if (!read_ec_data(ideapad_handle, VPCCMD_R_TOUCHPAD, &value))
224 seq_printf(s, "Touchpad status:%s(%lu)\n",
225 value ? "On" : "Off", value);
226 if (!read_ec_data(ideapad_handle, VPCCMD_R_CAMERA, &value))
227 seq_printf(s, "Camera status:\t%s(%lu)\n",
228 value ? "On" : "Off", value);
229
230 return 0;
231}
232
233static int debugfs_status_open(struct inode *inode, struct file *file)
234{
235 return single_open(file, debugfs_status_show, NULL);
236}
237
238static const struct file_operations debugfs_status_fops = {
239 .owner = THIS_MODULE,
240 .open = debugfs_status_open,
241 .read = seq_read,
242 .llseek = seq_lseek,
243 .release = single_release,
244};
245
246static int debugfs_cfg_show(struct seq_file *s, void *data)
247{
248 if (!ideapad_priv) {
249 seq_printf(s, "cfg: N/A\n");
250 } else {
251 seq_printf(s, "cfg: 0x%.8lX\n\nCapability: ",
252 ideapad_priv->cfg);
253 if (test_bit(CFG_BT_BIT, &ideapad_priv->cfg))
254 seq_printf(s, "Bluetooth ");
255 if (test_bit(CFG_3G_BIT, &ideapad_priv->cfg))
256 seq_printf(s, "3G ");
257 if (test_bit(CFG_WIFI_BIT, &ideapad_priv->cfg))
258 seq_printf(s, "Wireless ");
259 if (test_bit(CFG_CAMERA_BIT, &ideapad_priv->cfg))
260 seq_printf(s, "Camera ");
261 seq_printf(s, "\nGraphic: ");
262 switch ((ideapad_priv->cfg)&0x700) {
263 case 0x100:
264 seq_printf(s, "Intel");
265 break;
266 case 0x200:
267 seq_printf(s, "ATI");
268 break;
269 case 0x300:
270 seq_printf(s, "Nvidia");
271 break;
272 case 0x400:
273 seq_printf(s, "Intel and ATI");
274 break;
275 case 0x500:
276 seq_printf(s, "Intel and Nvidia");
277 break;
278 }
279 seq_printf(s, "\n");
280 }
281 return 0;
282}
283
284static int debugfs_cfg_open(struct inode *inode, struct file *file)
285{
286 return single_open(file, debugfs_cfg_show, NULL);
287}
288
289static const struct file_operations debugfs_cfg_fops = {
290 .owner = THIS_MODULE,
291 .open = debugfs_cfg_open,
292 .read = seq_read,
293 .llseek = seq_lseek,
294 .release = single_release,
295};
296
297static int __devinit ideapad_debugfs_init(struct ideapad_private *priv)
298{
299 struct dentry *node;
300
301 priv->debug = debugfs_create_dir("ideapad", NULL);
302 if (priv->debug == NULL) {
303 pr_err("failed to create debugfs directory");
304 goto errout;
305 }
306
307 node = debugfs_create_file("cfg", S_IRUGO, priv->debug, NULL,
308 &debugfs_cfg_fops);
309 if (!node) {
310 pr_err("failed to create cfg in debugfs");
311 goto errout;
312 }
313
314 node = debugfs_create_file("status", S_IRUGO, priv->debug, NULL,
315 &debugfs_status_fops);
316 if (!node) {
317 pr_err("failed to create status in debugfs");
318 goto errout;
319 }
320
321 return 0;
322
323errout:
324 return -ENOMEM;
325}
326
327static void ideapad_debugfs_exit(struct ideapad_private *priv)
328{
329 debugfs_remove_recursive(priv->debug);
330 priv->debug = NULL;
331}
332
333/*
334 * sysfs
335 */
336static ssize_t show_ideapad_cam(struct device *dev,
337 struct device_attribute *attr,
338 char *buf)
339{
340 unsigned long result;
341
342 if (read_ec_data(ideapad_handle, VPCCMD_R_CAMERA, &result))
343 return sprintf(buf, "-1\n");
344 return sprintf(buf, "%lu\n", result);
345}
346
347static ssize_t store_ideapad_cam(struct device *dev,
348 struct device_attribute *attr,
349 const char *buf, size_t count)
350{
351 int ret, state;
352
353 if (!count)
354 return 0;
355 if (sscanf(buf, "%i", &state) != 1)
356 return -EINVAL;
357 ret = write_ec_cmd(ideapad_handle, VPCCMD_W_CAMERA, state);
358 if (ret < 0)
359 return ret;
360 return count;
361}
362
363static DEVICE_ATTR(camera_power, 0644, show_ideapad_cam, store_ideapad_cam);
364
365static struct attribute *ideapad_attributes[] = {
366 &dev_attr_camera_power.attr,
367 NULL
368};
369
370static umode_t ideapad_is_visible(struct kobject *kobj,
371 struct attribute *attr,
372 int idx)
373{
374 struct device *dev = container_of(kobj, struct device, kobj);
375 struct ideapad_private *priv = dev_get_drvdata(dev);
376 bool supported;
377
378 if (attr == &dev_attr_camera_power.attr)
379 supported = test_bit(CFG_CAMERA_BIT, &(priv->cfg));
380 else
381 supported = true;
382
383 return supported ? attr->mode : 0;
384}
385
386static struct attribute_group ideapad_attribute_group = {
387 .is_visible = ideapad_is_visible,
388 .attrs = ideapad_attributes
389};
390
391/*
392 * Rfkill
393 */
394struct ideapad_rfk_data {
395 char *name;
396 int cfgbit;
397 int opcode;
398 int type;
399};
400
401const struct ideapad_rfk_data ideapad_rfk_data[] = {
402 { "ideapad_wlan", CFG_WIFI_BIT, VPCCMD_W_WIFI, RFKILL_TYPE_WLAN },
403 { "ideapad_bluetooth", CFG_BT_BIT, VPCCMD_W_BT, RFKILL_TYPE_BLUETOOTH },
404 { "ideapad_3g", CFG_3G_BIT, VPCCMD_W_3G, RFKILL_TYPE_WWAN },
405};
406
407static int ideapad_rfk_set(void *data, bool blocked)
408{
409 unsigned long opcode = (unsigned long)data;
410
411 return write_ec_cmd(ideapad_handle, opcode, !blocked);
412}
413
414static struct rfkill_ops ideapad_rfk_ops = {
415 .set_block = ideapad_rfk_set,
416};
417
418static void ideapad_sync_rfk_state(struct ideapad_private *priv)
419{
420 unsigned long hw_blocked;
421 int i;
422
423 if (read_ec_data(ideapad_handle, VPCCMD_R_RF, &hw_blocked))
424 return;
425 hw_blocked = !hw_blocked;
426
427 for (i = 0; i < IDEAPAD_RFKILL_DEV_NUM; i++)
428 if (priv->rfk[i])
429 rfkill_set_hw_state(priv->rfk[i], hw_blocked);
430}
431
432static int __devinit ideapad_register_rfkill(struct acpi_device *adevice,
433 int dev)
434{
435 struct ideapad_private *priv = dev_get_drvdata(&adevice->dev);
436 int ret;
437 unsigned long sw_blocked;
438
439 if (no_bt_rfkill &&
440 (ideapad_rfk_data[dev].type == RFKILL_TYPE_BLUETOOTH)) {
441 /* Force to enable bluetooth when no_bt_rfkill=1 */
442 write_ec_cmd(ideapad_handle,
443 ideapad_rfk_data[dev].opcode, 1);
444 return 0;
445 }
446
447 priv->rfk[dev] = rfkill_alloc(ideapad_rfk_data[dev].name, &adevice->dev,
448 ideapad_rfk_data[dev].type, &ideapad_rfk_ops,
449 (void *)(long)dev);
450 if (!priv->rfk[dev])
451 return -ENOMEM;
452
453 if (read_ec_data(ideapad_handle, ideapad_rfk_data[dev].opcode-1,
454 &sw_blocked)) {
455 rfkill_init_sw_state(priv->rfk[dev], 0);
456 } else {
457 sw_blocked = !sw_blocked;
458 rfkill_init_sw_state(priv->rfk[dev], sw_blocked);
459 }
460
461 ret = rfkill_register(priv->rfk[dev]);
462 if (ret) {
463 rfkill_destroy(priv->rfk[dev]);
464 return ret;
465 }
466 return 0;
467}
468
469static void ideapad_unregister_rfkill(struct acpi_device *adevice, int dev)
470{
471 struct ideapad_private *priv = dev_get_drvdata(&adevice->dev);
472
473 if (!priv->rfk[dev])
474 return;
475
476 rfkill_unregister(priv->rfk[dev]);
477 rfkill_destroy(priv->rfk[dev]);
478}
479
480/*
481 * Platform device
482 */
483static int __devinit ideapad_platform_init(struct ideapad_private *priv)
484{
485 int result;
486
487 priv->platform_device = platform_device_alloc("ideapad", -1);
488 if (!priv->platform_device)
489 return -ENOMEM;
490 platform_set_drvdata(priv->platform_device, priv);
491
492 result = platform_device_add(priv->platform_device);
493 if (result)
494 goto fail_platform_device;
495
496 result = sysfs_create_group(&priv->platform_device->dev.kobj,
497 &ideapad_attribute_group);
498 if (result)
499 goto fail_sysfs;
500 return 0;
501
502fail_sysfs:
503 platform_device_del(priv->platform_device);
504fail_platform_device:
505 platform_device_put(priv->platform_device);
506 return result;
507}
508
509static void ideapad_platform_exit(struct ideapad_private *priv)
510{
511 sysfs_remove_group(&priv->platform_device->dev.kobj,
512 &ideapad_attribute_group);
513 platform_device_unregister(priv->platform_device);
514}
515
516/*
517 * input device
518 */
519static const struct key_entry ideapad_keymap[] = {
520 { KE_KEY, 6, { KEY_SWITCHVIDEOMODE } },
521 { KE_KEY, 13, { KEY_WLAN } },
522 { KE_KEY, 16, { KEY_PROG1 } },
523 { KE_KEY, 17, { KEY_PROG2 } },
524 { KE_END, 0 },
525};
526
527static int __devinit ideapad_input_init(struct ideapad_private *priv)
528{
529 struct input_dev *inputdev;
530 int error;
531
532 inputdev = input_allocate_device();
533 if (!inputdev) {
534 pr_info("Unable to allocate input device\n");
535 return -ENOMEM;
536 }
537
538 inputdev->name = "Ideapad extra buttons";
539 inputdev->phys = "ideapad/input0";
540 inputdev->id.bustype = BUS_HOST;
541 inputdev->dev.parent = &priv->platform_device->dev;
542
543 error = sparse_keymap_setup(inputdev, ideapad_keymap, NULL);
544 if (error) {
545 pr_err("Unable to setup input device keymap\n");
546 goto err_free_dev;
547 }
548
549 error = input_register_device(inputdev);
550 if (error) {
551 pr_err("Unable to register input device\n");
552 goto err_free_keymap;
553 }
554
555 priv->inputdev = inputdev;
556 return 0;
557
558err_free_keymap:
559 sparse_keymap_free(inputdev);
560err_free_dev:
561 input_free_device(inputdev);
562 return error;
563}
564
565static void ideapad_input_exit(struct ideapad_private *priv)
566{
567 sparse_keymap_free(priv->inputdev);
568 input_unregister_device(priv->inputdev);
569 priv->inputdev = NULL;
570}
571
572static void ideapad_input_report(struct ideapad_private *priv,
573 unsigned long scancode)
574{
575 sparse_keymap_report_event(priv->inputdev, scancode, 1, true);
576}
577
578static void ideapad_input_novokey(struct ideapad_private *priv)
579{
580 unsigned long long_pressed;
581
582 if (read_ec_data(ideapad_handle, VPCCMD_R_NOVO, &long_pressed))
583 return;
584 if (long_pressed)
585 ideapad_input_report(priv, 17);
586 else
587 ideapad_input_report(priv, 16);
588}
589
590/*
591 * backlight
592 */
593static int ideapad_backlight_get_brightness(struct backlight_device *blightdev)
594{
595 unsigned long now;
596
597 if (read_ec_data(ideapad_handle, VPCCMD_R_BL, &now))
598 return -EIO;
599 return now;
600}
601
602static int ideapad_backlight_update_status(struct backlight_device *blightdev)
603{
604 if (write_ec_cmd(ideapad_handle, VPCCMD_W_BL,
605 blightdev->props.brightness))
606 return -EIO;
607 if (write_ec_cmd(ideapad_handle, VPCCMD_W_BL_POWER,
608 blightdev->props.power == FB_BLANK_POWERDOWN ? 0 : 1))
609 return -EIO;
610
611 return 0;
612}
613
614static const struct backlight_ops ideapad_backlight_ops = {
615 .get_brightness = ideapad_backlight_get_brightness,
616 .update_status = ideapad_backlight_update_status,
617};
618
619static int ideapad_backlight_init(struct ideapad_private *priv)
620{
621 struct backlight_device *blightdev;
622 struct backlight_properties props;
623 unsigned long max, now, power;
624
625 if (read_ec_data(ideapad_handle, VPCCMD_R_BL_MAX, &max))
626 return -EIO;
627 if (read_ec_data(ideapad_handle, VPCCMD_R_BL, &now))
628 return -EIO;
629 if (read_ec_data(ideapad_handle, VPCCMD_R_BL_POWER, &power))
630 return -EIO;
631
632 memset(&props, 0, sizeof(struct backlight_properties));
633 props.max_brightness = max;
634 props.type = BACKLIGHT_PLATFORM;
635 blightdev = backlight_device_register("ideapad",
636 &priv->platform_device->dev,
637 priv,
638 &ideapad_backlight_ops,
639 &props);
640 if (IS_ERR(blightdev)) {
641 pr_err("Could not register backlight device\n");
642 return PTR_ERR(blightdev);
643 }
644
645 priv->blightdev = blightdev;
646 blightdev->props.brightness = now;
647 blightdev->props.power = power ? FB_BLANK_UNBLANK : FB_BLANK_POWERDOWN;
648 backlight_update_status(blightdev);
649
650 return 0;
651}
652
653static void ideapad_backlight_exit(struct ideapad_private *priv)
654{
655 if (priv->blightdev)
656 backlight_device_unregister(priv->blightdev);
657 priv->blightdev = NULL;
658}
659
660static void ideapad_backlight_notify_power(struct ideapad_private *priv)
661{
662 unsigned long power;
663 struct backlight_device *blightdev = priv->blightdev;
664
665 if (!blightdev)
666 return;
667 if (read_ec_data(ideapad_handle, VPCCMD_R_BL_POWER, &power))
668 return;
669 blightdev->props.power = power ? FB_BLANK_UNBLANK : FB_BLANK_POWERDOWN;
670}
671
672static void ideapad_backlight_notify_brightness(struct ideapad_private *priv)
673{
674 unsigned long now;
675
676 /* if we control brightness via acpi video driver */
677 if (priv->blightdev == NULL) {
678 read_ec_data(ideapad_handle, VPCCMD_R_BL, &now);
679 return;
680 }
681
682 backlight_force_update(priv->blightdev, BACKLIGHT_UPDATE_HOTKEY);
683}
684
685/*
686 * module init/exit
687 */
688static const struct acpi_device_id ideapad_device_ids[] = {
689 { "VPC2004", 0},
690 { "", 0},
691};
692MODULE_DEVICE_TABLE(acpi, ideapad_device_ids);
693
694static int __devinit ideapad_acpi_add(struct acpi_device *adevice)
695{
696 int ret, i;
697 int cfg;
698 struct ideapad_private *priv;
699
700 if (read_method_int(adevice->handle, "_CFG", &cfg))
701 return -ENODEV;
702
703 priv = kzalloc(sizeof(*priv), GFP_KERNEL);
704 if (!priv)
705 return -ENOMEM;
706 dev_set_drvdata(&adevice->dev, priv);
707 ideapad_priv = priv;
708 ideapad_handle = adevice->handle;
709 priv->cfg = cfg;
710
711 ret = ideapad_platform_init(priv);
712 if (ret)
713 goto platform_failed;
714
715 ret = ideapad_debugfs_init(priv);
716 if (ret)
717 goto debugfs_failed;
718
719 ret = ideapad_input_init(priv);
720 if (ret)
721 goto input_failed;
722
723 for (i = 0; i < IDEAPAD_RFKILL_DEV_NUM; i++) {
724 if (test_bit(ideapad_rfk_data[i].cfgbit, &priv->cfg))
725 ideapad_register_rfkill(adevice, i);
726 else
727 priv->rfk[i] = NULL;
728 }
729 ideapad_sync_rfk_state(priv);
730
731 if (!acpi_video_backlight_support()) {
732 ret = ideapad_backlight_init(priv);
733 if (ret && ret != -ENODEV)
734 goto backlight_failed;
735 }
736
737 return 0;
738
739backlight_failed:
740 for (i = 0; i < IDEAPAD_RFKILL_DEV_NUM; i++)
741 ideapad_unregister_rfkill(adevice, i);
742 ideapad_input_exit(priv);
743input_failed:
744 ideapad_debugfs_exit(priv);
745debugfs_failed:
746 ideapad_platform_exit(priv);
747platform_failed:
748 kfree(priv);
749 return ret;
750}
751
752static int __devexit ideapad_acpi_remove(struct acpi_device *adevice, int type)
753{
754 struct ideapad_private *priv = dev_get_drvdata(&adevice->dev);
755 int i;
756
757 ideapad_backlight_exit(priv);
758 for (i = 0; i < IDEAPAD_RFKILL_DEV_NUM; i++)
759 ideapad_unregister_rfkill(adevice, i);
760 ideapad_input_exit(priv);
761 ideapad_debugfs_exit(priv);
762 ideapad_platform_exit(priv);
763 dev_set_drvdata(&adevice->dev, NULL);
764 kfree(priv);
765
766 return 0;
767}
768
769static void ideapad_acpi_notify(struct acpi_device *adevice, u32 event)
770{
771 struct ideapad_private *priv = dev_get_drvdata(&adevice->dev);
772 acpi_handle handle = adevice->handle;
773 unsigned long vpc1, vpc2, vpc_bit;
774
775 if (read_ec_data(handle, VPCCMD_R_VPC1, &vpc1))
776 return;
777 if (read_ec_data(handle, VPCCMD_R_VPC2, &vpc2))
778 return;
779
780 vpc1 = (vpc2 << 8) | vpc1;
781 for (vpc_bit = 0; vpc_bit < 16; vpc_bit++) {
782 if (test_bit(vpc_bit, &vpc1)) {
783 switch (vpc_bit) {
784 case 9:
785 ideapad_sync_rfk_state(priv);
786 break;
787 case 13:
788 case 6:
789 ideapad_input_report(priv, vpc_bit);
790 break;
791 case 4:
792 ideapad_backlight_notify_brightness(priv);
793 break;
794 case 3:
795 ideapad_input_novokey(priv);
796 break;
797 case 2:
798 ideapad_backlight_notify_power(priv);
799 break;
800 default:
801 pr_info("Unknown event: %lu\n", vpc_bit);
802 }
803 }
804 }
805}
806
807static struct acpi_driver ideapad_acpi_driver = {
808 .name = "ideapad_acpi",
809 .class = "IdeaPad",
810 .ids = ideapad_device_ids,
811 .ops.add = ideapad_acpi_add,
812 .ops.remove = ideapad_acpi_remove,
813 .ops.notify = ideapad_acpi_notify,
814 .owner = THIS_MODULE,
815};
816
817static int __init ideapad_acpi_module_init(void)
818{
819 return acpi_bus_register_driver(&ideapad_acpi_driver);
820}
821
822static void __exit ideapad_acpi_module_exit(void)
823{
824 acpi_bus_unregister_driver(&ideapad_acpi_driver);
825}
826
827MODULE_AUTHOR("David Woodhouse <dwmw2@infradead.org>");
828MODULE_DESCRIPTION("IdeaPad ACPI Extras");
829MODULE_LICENSE("GPL");
830
831module_init(ideapad_acpi_module_init);
832module_exit(ideapad_acpi_module_exit);