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ideapad_laptop: Lenovo G50-30 fix rfkill reports wireless blocked
[deliverable/linux.git] / drivers / platform / x86 / ideapad-laptop.c
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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 <linux/acpi.h>
30#include <linux/rfkill.h>
31#include <linux/platform_device.h>
32#include <linux/input.h>
33#include <linux/input/sparse-keymap.h>
34#include <linux/backlight.h>
35#include <linux/fb.h>
36#include <linux/debugfs.h>
37#include <linux/seq_file.h>
38#include <linux/i8042.h>
39#include <linux/dmi.h>
40#include <linux/device.h>
41
42#define IDEAPAD_RFKILL_DEV_NUM (3)
43
44#define CFG_BT_BIT (16)
45#define CFG_3G_BIT (17)
46#define CFG_WIFI_BIT (18)
47#define CFG_CAMERA_BIT (19)
48
49enum {
50 VPCCMD_R_VPC1 = 0x10,
51 VPCCMD_R_BL_MAX,
52 VPCCMD_R_BL,
53 VPCCMD_W_BL,
54 VPCCMD_R_WIFI,
55 VPCCMD_W_WIFI,
56 VPCCMD_R_BT,
57 VPCCMD_W_BT,
58 VPCCMD_R_BL_POWER,
59 VPCCMD_R_NOVO,
60 VPCCMD_R_VPC2,
61 VPCCMD_R_TOUCHPAD,
62 VPCCMD_W_TOUCHPAD,
63 VPCCMD_R_CAMERA,
64 VPCCMD_W_CAMERA,
65 VPCCMD_R_3G,
66 VPCCMD_W_3G,
67 VPCCMD_R_ODD, /* 0x21 */
68 VPCCMD_W_FAN,
69 VPCCMD_R_RF,
70 VPCCMD_W_RF,
71 VPCCMD_R_FAN = 0x2B,
72 VPCCMD_R_SPECIAL_BUTTONS = 0x31,
73 VPCCMD_W_BL_POWER = 0x33,
74};
75
76struct ideapad_rfk_priv {
77 int dev;
78 struct ideapad_private *priv;
79};
80
81struct ideapad_private {
82 struct acpi_device *adev;
83 struct rfkill *rfk[IDEAPAD_RFKILL_DEV_NUM];
84 struct ideapad_rfk_priv rfk_priv[IDEAPAD_RFKILL_DEV_NUM];
85 struct platform_device *platform_device;
86 struct input_dev *inputdev;
87 struct backlight_device *blightdev;
88 struct dentry *debug;
89 unsigned long cfg;
90 bool has_hw_rfkill_switch;
91};
92
93static bool no_bt_rfkill;
94module_param(no_bt_rfkill, bool, 0444);
95MODULE_PARM_DESC(no_bt_rfkill, "No rfkill for bluetooth.");
96
97/*
98 * ACPI Helpers
99 */
100#define IDEAPAD_EC_TIMEOUT (100) /* in ms */
101
102static int read_method_int(acpi_handle handle, const char *method, int *val)
103{
104 acpi_status status;
105 unsigned long long result;
106
107 status = acpi_evaluate_integer(handle, (char *)method, NULL, &result);
108 if (ACPI_FAILURE(status)) {
109 *val = -1;
110 return -1;
111 } else {
112 *val = result;
113 return 0;
114 }
115}
116
117static int method_vpcr(acpi_handle handle, int cmd, int *ret)
118{
119 acpi_status status;
120 unsigned long long result;
121 struct acpi_object_list params;
122 union acpi_object in_obj;
123
124 params.count = 1;
125 params.pointer = &in_obj;
126 in_obj.type = ACPI_TYPE_INTEGER;
127 in_obj.integer.value = cmd;
128
129 status = acpi_evaluate_integer(handle, "VPCR", &params, &result);
130
131 if (ACPI_FAILURE(status)) {
132 *ret = -1;
133 return -1;
134 } else {
135 *ret = result;
136 return 0;
137 }
138}
139
140static int method_vpcw(acpi_handle handle, int cmd, int data)
141{
142 struct acpi_object_list params;
143 union acpi_object in_obj[2];
144 acpi_status status;
145
146 params.count = 2;
147 params.pointer = in_obj;
148 in_obj[0].type = ACPI_TYPE_INTEGER;
149 in_obj[0].integer.value = cmd;
150 in_obj[1].type = ACPI_TYPE_INTEGER;
151 in_obj[1].integer.value = data;
152
153 status = acpi_evaluate_object(handle, "VPCW", &params, NULL);
154 if (status != AE_OK)
155 return -1;
156 return 0;
157}
158
159static int read_ec_data(acpi_handle handle, int cmd, unsigned long *data)
160{
161 int val;
162 unsigned long int end_jiffies;
163
164 if (method_vpcw(handle, 1, cmd))
165 return -1;
166
167 for (end_jiffies = jiffies+(HZ)*IDEAPAD_EC_TIMEOUT/1000+1;
168 time_before(jiffies, end_jiffies);) {
169 schedule();
170 if (method_vpcr(handle, 1, &val))
171 return -1;
172 if (val == 0) {
173 if (method_vpcr(handle, 0, &val))
174 return -1;
175 *data = val;
176 return 0;
177 }
178 }
179 pr_err("timeout in read_ec_cmd\n");
180 return -1;
181}
182
183static int write_ec_cmd(acpi_handle handle, int cmd, unsigned long data)
184{
185 int val;
186 unsigned long int end_jiffies;
187
188 if (method_vpcw(handle, 0, data))
189 return -1;
190 if (method_vpcw(handle, 1, cmd))
191 return -1;
192
193 for (end_jiffies = jiffies+(HZ)*IDEAPAD_EC_TIMEOUT/1000+1;
194 time_before(jiffies, end_jiffies);) {
195 schedule();
196 if (method_vpcr(handle, 1, &val))
197 return -1;
198 if (val == 0)
199 return 0;
200 }
201 pr_err("timeout in write_ec_cmd\n");
202 return -1;
203}
204
205/*
206 * debugfs
207 */
208static int debugfs_status_show(struct seq_file *s, void *data)
209{
210 struct ideapad_private *priv = s->private;
211 unsigned long value;
212
213 if (!priv)
214 return -EINVAL;
215
216 if (!read_ec_data(priv->adev->handle, VPCCMD_R_BL_MAX, &value))
217 seq_printf(s, "Backlight max:\t%lu\n", value);
218 if (!read_ec_data(priv->adev->handle, VPCCMD_R_BL, &value))
219 seq_printf(s, "Backlight now:\t%lu\n", value);
220 if (!read_ec_data(priv->adev->handle, VPCCMD_R_BL_POWER, &value))
221 seq_printf(s, "BL power value:\t%s\n", value ? "On" : "Off");
222 seq_printf(s, "=====================\n");
223
224 if (!read_ec_data(priv->adev->handle, VPCCMD_R_RF, &value))
225 seq_printf(s, "Radio status:\t%s(%lu)\n",
226 value ? "On" : "Off", value);
227 if (!read_ec_data(priv->adev->handle, VPCCMD_R_WIFI, &value))
228 seq_printf(s, "Wifi status:\t%s(%lu)\n",
229 value ? "On" : "Off", value);
230 if (!read_ec_data(priv->adev->handle, VPCCMD_R_BT, &value))
231 seq_printf(s, "BT status:\t%s(%lu)\n",
232 value ? "On" : "Off", value);
233 if (!read_ec_data(priv->adev->handle, VPCCMD_R_3G, &value))
234 seq_printf(s, "3G status:\t%s(%lu)\n",
235 value ? "On" : "Off", value);
236 seq_printf(s, "=====================\n");
237
238 if (!read_ec_data(priv->adev->handle, VPCCMD_R_TOUCHPAD, &value))
239 seq_printf(s, "Touchpad status:%s(%lu)\n",
240 value ? "On" : "Off", value);
241 if (!read_ec_data(priv->adev->handle, VPCCMD_R_CAMERA, &value))
242 seq_printf(s, "Camera status:\t%s(%lu)\n",
243 value ? "On" : "Off", value);
244
245 return 0;
246}
247
248static int debugfs_status_open(struct inode *inode, struct file *file)
249{
250 return single_open(file, debugfs_status_show, inode->i_private);
251}
252
253static const struct file_operations debugfs_status_fops = {
254 .owner = THIS_MODULE,
255 .open = debugfs_status_open,
256 .read = seq_read,
257 .llseek = seq_lseek,
258 .release = single_release,
259};
260
261static int debugfs_cfg_show(struct seq_file *s, void *data)
262{
263 struct ideapad_private *priv = s->private;
264
265 if (!priv) {
266 seq_printf(s, "cfg: N/A\n");
267 } else {
268 seq_printf(s, "cfg: 0x%.8lX\n\nCapability: ",
269 priv->cfg);
270 if (test_bit(CFG_BT_BIT, &priv->cfg))
271 seq_printf(s, "Bluetooth ");
272 if (test_bit(CFG_3G_BIT, &priv->cfg))
273 seq_printf(s, "3G ");
274 if (test_bit(CFG_WIFI_BIT, &priv->cfg))
275 seq_printf(s, "Wireless ");
276 if (test_bit(CFG_CAMERA_BIT, &priv->cfg))
277 seq_printf(s, "Camera ");
278 seq_printf(s, "\nGraphic: ");
279 switch ((priv->cfg)&0x700) {
280 case 0x100:
281 seq_printf(s, "Intel");
282 break;
283 case 0x200:
284 seq_printf(s, "ATI");
285 break;
286 case 0x300:
287 seq_printf(s, "Nvidia");
288 break;
289 case 0x400:
290 seq_printf(s, "Intel and ATI");
291 break;
292 case 0x500:
293 seq_printf(s, "Intel and Nvidia");
294 break;
295 }
296 seq_printf(s, "\n");
297 }
298 return 0;
299}
300
301static int debugfs_cfg_open(struct inode *inode, struct file *file)
302{
303 return single_open(file, debugfs_cfg_show, inode->i_private);
304}
305
306static const struct file_operations debugfs_cfg_fops = {
307 .owner = THIS_MODULE,
308 .open = debugfs_cfg_open,
309 .read = seq_read,
310 .llseek = seq_lseek,
311 .release = single_release,
312};
313
314static int ideapad_debugfs_init(struct ideapad_private *priv)
315{
316 struct dentry *node;
317
318 priv->debug = debugfs_create_dir("ideapad", NULL);
319 if (priv->debug == NULL) {
320 pr_err("failed to create debugfs directory");
321 goto errout;
322 }
323
324 node = debugfs_create_file("cfg", S_IRUGO, priv->debug, priv,
325 &debugfs_cfg_fops);
326 if (!node) {
327 pr_err("failed to create cfg in debugfs");
328 goto errout;
329 }
330
331 node = debugfs_create_file("status", S_IRUGO, priv->debug, priv,
332 &debugfs_status_fops);
333 if (!node) {
334 pr_err("failed to create status in debugfs");
335 goto errout;
336 }
337
338 return 0;
339
340errout:
341 return -ENOMEM;
342}
343
344static void ideapad_debugfs_exit(struct ideapad_private *priv)
345{
346 debugfs_remove_recursive(priv->debug);
347 priv->debug = NULL;
348}
349
350/*
351 * sysfs
352 */
353static ssize_t show_ideapad_cam(struct device *dev,
354 struct device_attribute *attr,
355 char *buf)
356{
357 unsigned long result;
358 struct ideapad_private *priv = dev_get_drvdata(dev);
359
360 if (read_ec_data(priv->adev->handle, VPCCMD_R_CAMERA, &result))
361 return sprintf(buf, "-1\n");
362 return sprintf(buf, "%lu\n", result);
363}
364
365static ssize_t store_ideapad_cam(struct device *dev,
366 struct device_attribute *attr,
367 const char *buf, size_t count)
368{
369 int ret, state;
370 struct ideapad_private *priv = dev_get_drvdata(dev);
371
372 if (!count)
373 return 0;
374 if (sscanf(buf, "%i", &state) != 1)
375 return -EINVAL;
376 ret = write_ec_cmd(priv->adev->handle, VPCCMD_W_CAMERA, state);
377 if (ret < 0)
378 return -EIO;
379 return count;
380}
381
382static DEVICE_ATTR(camera_power, 0644, show_ideapad_cam, store_ideapad_cam);
383
384static ssize_t show_ideapad_fan(struct device *dev,
385 struct device_attribute *attr,
386 char *buf)
387{
388 unsigned long result;
389 struct ideapad_private *priv = dev_get_drvdata(dev);
390
391 if (read_ec_data(priv->adev->handle, VPCCMD_R_FAN, &result))
392 return sprintf(buf, "-1\n");
393 return sprintf(buf, "%lu\n", result);
394}
395
396static ssize_t store_ideapad_fan(struct device *dev,
397 struct device_attribute *attr,
398 const char *buf, size_t count)
399{
400 int ret, state;
401 struct ideapad_private *priv = dev_get_drvdata(dev);
402
403 if (!count)
404 return 0;
405 if (sscanf(buf, "%i", &state) != 1)
406 return -EINVAL;
407 if (state < 0 || state > 4 || state == 3)
408 return -EINVAL;
409 ret = write_ec_cmd(priv->adev->handle, VPCCMD_W_FAN, state);
410 if (ret < 0)
411 return -EIO;
412 return count;
413}
414
415static DEVICE_ATTR(fan_mode, 0644, show_ideapad_fan, store_ideapad_fan);
416
417static struct attribute *ideapad_attributes[] = {
418 &dev_attr_camera_power.attr,
419 &dev_attr_fan_mode.attr,
420 NULL
421};
422
423static umode_t ideapad_is_visible(struct kobject *kobj,
424 struct attribute *attr,
425 int idx)
426{
427 struct device *dev = container_of(kobj, struct device, kobj);
428 struct ideapad_private *priv = dev_get_drvdata(dev);
429 bool supported;
430
431 if (attr == &dev_attr_camera_power.attr)
432 supported = test_bit(CFG_CAMERA_BIT, &(priv->cfg));
433 else if (attr == &dev_attr_fan_mode.attr) {
434 unsigned long value;
435 supported = !read_ec_data(priv->adev->handle, VPCCMD_R_FAN,
436 &value);
437 } else
438 supported = true;
439
440 return supported ? attr->mode : 0;
441}
442
443static const struct attribute_group ideapad_attribute_group = {
444 .is_visible = ideapad_is_visible,
445 .attrs = ideapad_attributes
446};
447
448/*
449 * Rfkill
450 */
451struct ideapad_rfk_data {
452 char *name;
453 int cfgbit;
454 int opcode;
455 int type;
456};
457
458static const struct ideapad_rfk_data ideapad_rfk_data[] = {
459 { "ideapad_wlan", CFG_WIFI_BIT, VPCCMD_W_WIFI, RFKILL_TYPE_WLAN },
460 { "ideapad_bluetooth", CFG_BT_BIT, VPCCMD_W_BT, RFKILL_TYPE_BLUETOOTH },
461 { "ideapad_3g", CFG_3G_BIT, VPCCMD_W_3G, RFKILL_TYPE_WWAN },
462};
463
464static int ideapad_rfk_set(void *data, bool blocked)
465{
466 struct ideapad_rfk_priv *priv = data;
467
468 return write_ec_cmd(priv->priv->adev->handle, priv->dev, !blocked);
469}
470
471static struct rfkill_ops ideapad_rfk_ops = {
472 .set_block = ideapad_rfk_set,
473};
474
475static void ideapad_sync_rfk_state(struct ideapad_private *priv)
476{
477 unsigned long hw_blocked = 0;
478 int i;
479
480 if (priv->has_hw_rfkill_switch) {
481 if (read_ec_data(priv->adev->handle, VPCCMD_R_RF, &hw_blocked))
482 return;
483 hw_blocked = !hw_blocked;
484 }
485
486 for (i = 0; i < IDEAPAD_RFKILL_DEV_NUM; i++)
487 if (priv->rfk[i])
488 rfkill_set_hw_state(priv->rfk[i], hw_blocked);
489}
490
491static int ideapad_register_rfkill(struct ideapad_private *priv, int dev)
492{
493 int ret;
494 unsigned long sw_blocked;
495
496 if (no_bt_rfkill &&
497 (ideapad_rfk_data[dev].type == RFKILL_TYPE_BLUETOOTH)) {
498 /* Force to enable bluetooth when no_bt_rfkill=1 */
499 write_ec_cmd(priv->adev->handle,
500 ideapad_rfk_data[dev].opcode, 1);
501 return 0;
502 }
503 priv->rfk_priv[dev].dev = dev;
504 priv->rfk_priv[dev].priv = priv;
505
506 priv->rfk[dev] = rfkill_alloc(ideapad_rfk_data[dev].name,
507 &priv->platform_device->dev,
508 ideapad_rfk_data[dev].type,
509 &ideapad_rfk_ops,
510 &priv->rfk_priv[dev]);
511 if (!priv->rfk[dev])
512 return -ENOMEM;
513
514 if (read_ec_data(priv->adev->handle, ideapad_rfk_data[dev].opcode-1,
515 &sw_blocked)) {
516 rfkill_init_sw_state(priv->rfk[dev], 0);
517 } else {
518 sw_blocked = !sw_blocked;
519 rfkill_init_sw_state(priv->rfk[dev], sw_blocked);
520 }
521
522 ret = rfkill_register(priv->rfk[dev]);
523 if (ret) {
524 rfkill_destroy(priv->rfk[dev]);
525 return ret;
526 }
527 return 0;
528}
529
530static void ideapad_unregister_rfkill(struct ideapad_private *priv, int dev)
531{
532 if (!priv->rfk[dev])
533 return;
534
535 rfkill_unregister(priv->rfk[dev]);
536 rfkill_destroy(priv->rfk[dev]);
537}
538
539/*
540 * Platform device
541 */
542static int ideapad_sysfs_init(struct ideapad_private *priv)
543{
544 return sysfs_create_group(&priv->platform_device->dev.kobj,
545 &ideapad_attribute_group);
546}
547
548static void ideapad_sysfs_exit(struct ideapad_private *priv)
549{
550 sysfs_remove_group(&priv->platform_device->dev.kobj,
551 &ideapad_attribute_group);
552}
553
554/*
555 * input device
556 */
557static const struct key_entry ideapad_keymap[] = {
558 { KE_KEY, 6, { KEY_SWITCHVIDEOMODE } },
559 { KE_KEY, 7, { KEY_CAMERA } },
560 { KE_KEY, 11, { KEY_F16 } },
561 { KE_KEY, 13, { KEY_WLAN } },
562 { KE_KEY, 16, { KEY_PROG1 } },
563 { KE_KEY, 17, { KEY_PROG2 } },
564 { KE_KEY, 64, { KEY_PROG3 } },
565 { KE_KEY, 65, { KEY_PROG4 } },
566 { KE_KEY, 66, { KEY_TOUCHPAD_OFF } },
567 { KE_KEY, 67, { KEY_TOUCHPAD_ON } },
568 { KE_END, 0 },
569};
570
571static int ideapad_input_init(struct ideapad_private *priv)
572{
573 struct input_dev *inputdev;
574 int error;
575
576 inputdev = input_allocate_device();
577 if (!inputdev)
578 return -ENOMEM;
579
580 inputdev->name = "Ideapad extra buttons";
581 inputdev->phys = "ideapad/input0";
582 inputdev->id.bustype = BUS_HOST;
583 inputdev->dev.parent = &priv->platform_device->dev;
584
585 error = sparse_keymap_setup(inputdev, ideapad_keymap, NULL);
586 if (error) {
587 pr_err("Unable to setup input device keymap\n");
588 goto err_free_dev;
589 }
590
591 error = input_register_device(inputdev);
592 if (error) {
593 pr_err("Unable to register input device\n");
594 goto err_free_keymap;
595 }
596
597 priv->inputdev = inputdev;
598 return 0;
599
600err_free_keymap:
601 sparse_keymap_free(inputdev);
602err_free_dev:
603 input_free_device(inputdev);
604 return error;
605}
606
607static void ideapad_input_exit(struct ideapad_private *priv)
608{
609 sparse_keymap_free(priv->inputdev);
610 input_unregister_device(priv->inputdev);
611 priv->inputdev = NULL;
612}
613
614static void ideapad_input_report(struct ideapad_private *priv,
615 unsigned long scancode)
616{
617 sparse_keymap_report_event(priv->inputdev, scancode, 1, true);
618}
619
620static void ideapad_input_novokey(struct ideapad_private *priv)
621{
622 unsigned long long_pressed;
623
624 if (read_ec_data(priv->adev->handle, VPCCMD_R_NOVO, &long_pressed))
625 return;
626 if (long_pressed)
627 ideapad_input_report(priv, 17);
628 else
629 ideapad_input_report(priv, 16);
630}
631
632static void ideapad_check_special_buttons(struct ideapad_private *priv)
633{
634 unsigned long bit, value;
635
636 read_ec_data(priv->adev->handle, VPCCMD_R_SPECIAL_BUTTONS, &value);
637
638 for (bit = 0; bit < 16; bit++) {
639 if (test_bit(bit, &value)) {
640 switch (bit) {
641 case 0: /* Z580 */
642 case 6: /* Z570 */
643 /* Thermal Management button */
644 ideapad_input_report(priv, 65);
645 break;
646 case 1:
647 /* OneKey Theater button */
648 ideapad_input_report(priv, 64);
649 break;
650 default:
651 pr_info("Unknown special button: %lu\n", bit);
652 break;
653 }
654 }
655 }
656}
657
658/*
659 * backlight
660 */
661static int ideapad_backlight_get_brightness(struct backlight_device *blightdev)
662{
663 struct ideapad_private *priv = bl_get_data(blightdev);
664 unsigned long now;
665
666 if (!priv)
667 return -EINVAL;
668
669 if (read_ec_data(priv->adev->handle, VPCCMD_R_BL, &now))
670 return -EIO;
671 return now;
672}
673
674static int ideapad_backlight_update_status(struct backlight_device *blightdev)
675{
676 struct ideapad_private *priv = bl_get_data(blightdev);
677
678 if (!priv)
679 return -EINVAL;
680
681 if (write_ec_cmd(priv->adev->handle, VPCCMD_W_BL,
682 blightdev->props.brightness))
683 return -EIO;
684 if (write_ec_cmd(priv->adev->handle, VPCCMD_W_BL_POWER,
685 blightdev->props.power == FB_BLANK_POWERDOWN ? 0 : 1))
686 return -EIO;
687
688 return 0;
689}
690
691static const struct backlight_ops ideapad_backlight_ops = {
692 .get_brightness = ideapad_backlight_get_brightness,
693 .update_status = ideapad_backlight_update_status,
694};
695
696static int ideapad_backlight_init(struct ideapad_private *priv)
697{
698 struct backlight_device *blightdev;
699 struct backlight_properties props;
700 unsigned long max, now, power;
701
702 if (read_ec_data(priv->adev->handle, VPCCMD_R_BL_MAX, &max))
703 return -EIO;
704 if (read_ec_data(priv->adev->handle, VPCCMD_R_BL, &now))
705 return -EIO;
706 if (read_ec_data(priv->adev->handle, VPCCMD_R_BL_POWER, &power))
707 return -EIO;
708
709 memset(&props, 0, sizeof(struct backlight_properties));
710 props.max_brightness = max;
711 props.type = BACKLIGHT_PLATFORM;
712 blightdev = backlight_device_register("ideapad",
713 &priv->platform_device->dev,
714 priv,
715 &ideapad_backlight_ops,
716 &props);
717 if (IS_ERR(blightdev)) {
718 pr_err("Could not register backlight device\n");
719 return PTR_ERR(blightdev);
720 }
721
722 priv->blightdev = blightdev;
723 blightdev->props.brightness = now;
724 blightdev->props.power = power ? FB_BLANK_UNBLANK : FB_BLANK_POWERDOWN;
725 backlight_update_status(blightdev);
726
727 return 0;
728}
729
730static void ideapad_backlight_exit(struct ideapad_private *priv)
731{
732 backlight_device_unregister(priv->blightdev);
733 priv->blightdev = NULL;
734}
735
736static void ideapad_backlight_notify_power(struct ideapad_private *priv)
737{
738 unsigned long power;
739 struct backlight_device *blightdev = priv->blightdev;
740
741 if (!blightdev)
742 return;
743 if (read_ec_data(priv->adev->handle, VPCCMD_R_BL_POWER, &power))
744 return;
745 blightdev->props.power = power ? FB_BLANK_UNBLANK : FB_BLANK_POWERDOWN;
746}
747
748static void ideapad_backlight_notify_brightness(struct ideapad_private *priv)
749{
750 unsigned long now;
751
752 /* if we control brightness via acpi video driver */
753 if (priv->blightdev == NULL) {
754 read_ec_data(priv->adev->handle, VPCCMD_R_BL, &now);
755 return;
756 }
757
758 backlight_force_update(priv->blightdev, BACKLIGHT_UPDATE_HOTKEY);
759}
760
761/*
762 * module init/exit
763 */
764static void ideapad_sync_touchpad_state(struct ideapad_private *priv)
765{
766 unsigned long value;
767
768 /* Without reading from EC touchpad LED doesn't switch state */
769 if (!read_ec_data(priv->adev->handle, VPCCMD_R_TOUCHPAD, &value)) {
770 /* Some IdeaPads don't really turn off touchpad - they only
771 * switch the LED state. We (de)activate KBC AUX port to turn
772 * touchpad off and on. We send KEY_TOUCHPAD_OFF and
773 * KEY_TOUCHPAD_ON to not to get out of sync with LED */
774 unsigned char param;
775 i8042_command(&param, value ? I8042_CMD_AUX_ENABLE :
776 I8042_CMD_AUX_DISABLE);
777 ideapad_input_report(priv, value ? 67 : 66);
778 }
779}
780
781static void ideapad_acpi_notify(acpi_handle handle, u32 event, void *data)
782{
783 struct ideapad_private *priv = data;
784 unsigned long vpc1, vpc2, vpc_bit;
785
786 if (read_ec_data(handle, VPCCMD_R_VPC1, &vpc1))
787 return;
788 if (read_ec_data(handle, VPCCMD_R_VPC2, &vpc2))
789 return;
790
791 vpc1 = (vpc2 << 8) | vpc1;
792 for (vpc_bit = 0; vpc_bit < 16; vpc_bit++) {
793 if (test_bit(vpc_bit, &vpc1)) {
794 switch (vpc_bit) {
795 case 9:
796 ideapad_sync_rfk_state(priv);
797 break;
798 case 13:
799 case 11:
800 case 7:
801 case 6:
802 ideapad_input_report(priv, vpc_bit);
803 break;
804 case 5:
805 ideapad_sync_touchpad_state(priv);
806 break;
807 case 4:
808 ideapad_backlight_notify_brightness(priv);
809 break;
810 case 3:
811 ideapad_input_novokey(priv);
812 break;
813 case 2:
814 ideapad_backlight_notify_power(priv);
815 break;
816 case 0:
817 ideapad_check_special_buttons(priv);
818 break;
819 default:
820 pr_info("Unknown event: %lu\n", vpc_bit);
821 }
822 }
823 }
824}
825
826/*
827 * Some ideapads don't have a hardware rfkill switch, reading VPCCMD_R_RF
828 * always results in 0 on these models, causing ideapad_laptop to wrongly
829 * report all radios as hardware-blocked.
830 */
831static const struct dmi_system_id no_hw_rfkill_list[] = {
832 {
833 .ident = "Lenovo G50-30",
834 .matches = {
835 DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
836 DMI_MATCH(DMI_PRODUCT_VERSION, "Lenovo G50-30"),
837 },
838 },
839 {
840 .ident = "Lenovo Yoga 2 11 / 13 / Pro",
841 .matches = {
842 DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
843 DMI_MATCH(DMI_PRODUCT_VERSION, "Lenovo Yoga 2"),
844 },
845 },
846 {
847 .ident = "Lenovo Yoga 3 Pro 1370",
848 .matches = {
849 DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
850 DMI_MATCH(DMI_PRODUCT_VERSION, "Lenovo YOGA 3 Pro-1370"),
851 },
852 },
853 {}
854};
855
856static int ideapad_acpi_add(struct platform_device *pdev)
857{
858 int ret, i;
859 int cfg;
860 struct ideapad_private *priv;
861 struct acpi_device *adev;
862
863 ret = acpi_bus_get_device(ACPI_HANDLE(&pdev->dev), &adev);
864 if (ret)
865 return -ENODEV;
866
867 if (read_method_int(adev->handle, "_CFG", &cfg))
868 return -ENODEV;
869
870 priv = devm_kzalloc(&pdev->dev, sizeof(*priv), GFP_KERNEL);
871 if (!priv)
872 return -ENOMEM;
873
874 dev_set_drvdata(&pdev->dev, priv);
875 priv->cfg = cfg;
876 priv->adev = adev;
877 priv->platform_device = pdev;
878 priv->has_hw_rfkill_switch = !dmi_check_system(no_hw_rfkill_list);
879
880 ret = ideapad_sysfs_init(priv);
881 if (ret)
882 return ret;
883
884 ret = ideapad_debugfs_init(priv);
885 if (ret)
886 goto debugfs_failed;
887
888 ret = ideapad_input_init(priv);
889 if (ret)
890 goto input_failed;
891
892 /*
893 * On some models without a hw-switch (the yoga 2 13 at least)
894 * VPCCMD_W_RF must be explicitly set to 1 for the wifi to work.
895 */
896 if (!priv->has_hw_rfkill_switch)
897 write_ec_cmd(priv->adev->handle, VPCCMD_W_RF, 1);
898
899 for (i = 0; i < IDEAPAD_RFKILL_DEV_NUM; i++)
900 if (test_bit(ideapad_rfk_data[i].cfgbit, &priv->cfg))
901 ideapad_register_rfkill(priv, i);
902
903 ideapad_sync_rfk_state(priv);
904 ideapad_sync_touchpad_state(priv);
905
906 if (!acpi_video_backlight_support()) {
907 ret = ideapad_backlight_init(priv);
908 if (ret && ret != -ENODEV)
909 goto backlight_failed;
910 }
911 ret = acpi_install_notify_handler(adev->handle,
912 ACPI_DEVICE_NOTIFY, ideapad_acpi_notify, priv);
913 if (ret)
914 goto notification_failed;
915
916 return 0;
917notification_failed:
918 ideapad_backlight_exit(priv);
919backlight_failed:
920 for (i = 0; i < IDEAPAD_RFKILL_DEV_NUM; i++)
921 ideapad_unregister_rfkill(priv, i);
922 ideapad_input_exit(priv);
923input_failed:
924 ideapad_debugfs_exit(priv);
925debugfs_failed:
926 ideapad_sysfs_exit(priv);
927 return ret;
928}
929
930static int ideapad_acpi_remove(struct platform_device *pdev)
931{
932 struct ideapad_private *priv = dev_get_drvdata(&pdev->dev);
933 int i;
934
935 acpi_remove_notify_handler(priv->adev->handle,
936 ACPI_DEVICE_NOTIFY, ideapad_acpi_notify);
937 ideapad_backlight_exit(priv);
938 for (i = 0; i < IDEAPAD_RFKILL_DEV_NUM; i++)
939 ideapad_unregister_rfkill(priv, i);
940 ideapad_input_exit(priv);
941 ideapad_debugfs_exit(priv);
942 ideapad_sysfs_exit(priv);
943 dev_set_drvdata(&pdev->dev, NULL);
944
945 return 0;
946}
947
948#ifdef CONFIG_PM_SLEEP
949static int ideapad_acpi_resume(struct device *device)
950{
951 struct ideapad_private *priv;
952
953 if (!device)
954 return -EINVAL;
955 priv = dev_get_drvdata(device);
956
957 ideapad_sync_rfk_state(priv);
958 ideapad_sync_touchpad_state(priv);
959 return 0;
960}
961#endif
962static SIMPLE_DEV_PM_OPS(ideapad_pm, NULL, ideapad_acpi_resume);
963
964static const struct acpi_device_id ideapad_device_ids[] = {
965 { "VPC2004", 0},
966 { "", 0},
967};
968MODULE_DEVICE_TABLE(acpi, ideapad_device_ids);
969
970static struct platform_driver ideapad_acpi_driver = {
971 .probe = ideapad_acpi_add,
972 .remove = ideapad_acpi_remove,
973 .driver = {
974 .name = "ideapad_acpi",
975 .pm = &ideapad_pm,
976 .acpi_match_table = ACPI_PTR(ideapad_device_ids),
977 },
978};
979
980module_platform_driver(ideapad_acpi_driver);
981
982MODULE_AUTHOR("David Woodhouse <dwmw2@infradead.org>");
983MODULE_DESCRIPTION("IdeaPad ACPI Extras");
984MODULE_LICENSE("GPL");
Linux kernel - Deliverables
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