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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#include <acpi/video.h>
42
43#define IDEAPAD_RFKILL_DEV_NUM (3)
44
45#define BM_CONSERVATION_BIT (5)
46#define HA_FNLOCK_BIT (10)
47
48#define CFG_BT_BIT (16)
49#define CFG_3G_BIT (17)
50#define CFG_WIFI_BIT (18)
51#define CFG_CAMERA_BIT (19)
52
53#if IS_ENABLED(CONFIG_ACPI_WMI)
54static const char *const ideapad_wmi_fnesc_events[] = {
55 "26CAB2E5-5CF1-46AE-AAC3-4A12B6BA50E6",
56 "56322276-8493-4CE8-A783-98C991274F5E",
57};
58#endif
59
60enum {
61 BMCMD_CONSERVATION_ON = 3,
62 BMCMD_CONSERVATION_OFF = 5,
63 HACMD_FNLOCK_ON = 0xe,
64 HACMD_FNLOCK_OFF = 0xf,
65};
66
67enum {
68 VPCCMD_R_VPC1 = 0x10,
69 VPCCMD_R_BL_MAX,
70 VPCCMD_R_BL,
71 VPCCMD_W_BL,
72 VPCCMD_R_WIFI,
73 VPCCMD_W_WIFI,
74 VPCCMD_R_BT,
75 VPCCMD_W_BT,
76 VPCCMD_R_BL_POWER,
77 VPCCMD_R_NOVO,
78 VPCCMD_R_VPC2,
79 VPCCMD_R_TOUCHPAD,
80 VPCCMD_W_TOUCHPAD,
81 VPCCMD_R_CAMERA,
82 VPCCMD_W_CAMERA,
83 VPCCMD_R_3G,
84 VPCCMD_W_3G,
85 VPCCMD_R_ODD,
86 VPCCMD_W_FAN,
87 VPCCMD_R_RF,
88 VPCCMD_W_RF,
89 VPCCMD_R_FAN = 0x2B,
90 VPCCMD_R_SPECIAL_BUTTONS = 0x31,
91 VPCCMD_W_BL_POWER = 0x33,
92};
93
94struct ideapad_rfk_priv {
95 int dev;
96 struct ideapad_private *priv;
97};
98
99struct ideapad_private {
100 struct acpi_device *adev;
101 struct rfkill *rfk[IDEAPAD_RFKILL_DEV_NUM];
102 struct ideapad_rfk_priv rfk_priv[IDEAPAD_RFKILL_DEV_NUM];
103 struct platform_device *platform_device;
104 struct input_dev *inputdev;
105 struct backlight_device *blightdev;
106 struct dentry *debug;
107 unsigned long cfg;
108 bool has_hw_rfkill_switch;
109 const char *fnesc_guid;
110};
111
112static bool no_bt_rfkill;
113module_param(no_bt_rfkill, bool, 0444);
114MODULE_PARM_DESC(no_bt_rfkill, "No rfkill for bluetooth.");
115
116
117
118
119#define IDEAPAD_EC_TIMEOUT (200)
120
121static int read_method_int(acpi_handle handle, const char *method, int *val)
122{
123 acpi_status status;
124 unsigned long long result;
125
126 status = acpi_evaluate_integer(handle, (char *)method, NULL, &result);
127 if (ACPI_FAILURE(status)) {
128 *val = -1;
129 return -1;
130 }
131 *val = result;
132 return 0;
133
134}
135
136static int method_gbmd(acpi_handle handle, unsigned long *ret)
137{
138 int result, val;
139
140 result = read_method_int(handle, "GBMD", &val);
141 *ret = val;
142 return result;
143}
144
145static int method_int1(acpi_handle handle, char *method, int cmd)
146{
147 acpi_status status;
148
149 status = acpi_execute_simple_method(handle, method, cmd);
150 return ACPI_FAILURE(status) ? -1 : 0;
151}
152
153static int method_vpcr(acpi_handle handle, int cmd, int *ret)
154{
155 acpi_status status;
156 unsigned long long result;
157 struct acpi_object_list params;
158 union acpi_object in_obj;
159
160 params.count = 1;
161 params.pointer = &in_obj;
162 in_obj.type = ACPI_TYPE_INTEGER;
163 in_obj.integer.value = cmd;
164
165 status = acpi_evaluate_integer(handle, "VPCR", ¶ms, &result);
166
167 if (ACPI_FAILURE(status)) {
168 *ret = -1;
169 return -1;
170 }
171 *ret = result;
172 return 0;
173
174}
175
176static int method_vpcw(acpi_handle handle, int cmd, int data)
177{
178 struct acpi_object_list params;
179 union acpi_object in_obj[2];
180 acpi_status status;
181
182 params.count = 2;
183 params.pointer = in_obj;
184 in_obj[0].type = ACPI_TYPE_INTEGER;
185 in_obj[0].integer.value = cmd;
186 in_obj[1].type = ACPI_TYPE_INTEGER;
187 in_obj[1].integer.value = data;
188
189 status = acpi_evaluate_object(handle, "VPCW", ¶ms, NULL);
190 if (status != AE_OK)
191 return -1;
192 return 0;
193}
194
195static int read_ec_data(acpi_handle handle, int cmd, unsigned long *data)
196{
197 int val;
198 unsigned long int end_jiffies;
199
200 if (method_vpcw(handle, 1, cmd))
201 return -1;
202
203 for (end_jiffies = jiffies+(HZ)*IDEAPAD_EC_TIMEOUT/1000+1;
204 time_before(jiffies, end_jiffies);) {
205 schedule();
206 if (method_vpcr(handle, 1, &val))
207 return -1;
208 if (val == 0) {
209 if (method_vpcr(handle, 0, &val))
210 return -1;
211 *data = val;
212 return 0;
213 }
214 }
215 pr_err("timeout in %s\n", __func__);
216 return -1;
217}
218
219static int write_ec_cmd(acpi_handle handle, int cmd, unsigned long data)
220{
221 int val;
222 unsigned long int end_jiffies;
223
224 if (method_vpcw(handle, 0, data))
225 return -1;
226 if (method_vpcw(handle, 1, cmd))
227 return -1;
228
229 for (end_jiffies = jiffies+(HZ)*IDEAPAD_EC_TIMEOUT/1000+1;
230 time_before(jiffies, end_jiffies);) {
231 schedule();
232 if (method_vpcr(handle, 1, &val))
233 return -1;
234 if (val == 0)
235 return 0;
236 }
237 pr_err("timeout in %s\n", __func__);
238 return -1;
239}
240
241
242
243
244static int debugfs_status_show(struct seq_file *s, void *data)
245{
246 struct ideapad_private *priv = s->private;
247 unsigned long value;
248
249 if (!priv)
250 return -EINVAL;
251
252 if (!read_ec_data(priv->adev->handle, VPCCMD_R_BL_MAX, &value))
253 seq_printf(s, "Backlight max:\t%lu\n", value);
254 if (!read_ec_data(priv->adev->handle, VPCCMD_R_BL, &value))
255 seq_printf(s, "Backlight now:\t%lu\n", value);
256 if (!read_ec_data(priv->adev->handle, VPCCMD_R_BL_POWER, &value))
257 seq_printf(s, "BL power value:\t%s\n", value ? "On" : "Off");
258 seq_printf(s, "=====================\n");
259
260 if (!read_ec_data(priv->adev->handle, VPCCMD_R_RF, &value))
261 seq_printf(s, "Radio status:\t%s(%lu)\n",
262 value ? "On" : "Off", value);
263 if (!read_ec_data(priv->adev->handle, VPCCMD_R_WIFI, &value))
264 seq_printf(s, "Wifi status:\t%s(%lu)\n",
265 value ? "On" : "Off", value);
266 if (!read_ec_data(priv->adev->handle, VPCCMD_R_BT, &value))
267 seq_printf(s, "BT status:\t%s(%lu)\n",
268 value ? "On" : "Off", value);
269 if (!read_ec_data(priv->adev->handle, VPCCMD_R_3G, &value))
270 seq_printf(s, "3G status:\t%s(%lu)\n",
271 value ? "On" : "Off", value);
272 seq_printf(s, "=====================\n");
273
274 if (!read_ec_data(priv->adev->handle, VPCCMD_R_TOUCHPAD, &value))
275 seq_printf(s, "Touchpad status:%s(%lu)\n",
276 value ? "On" : "Off", value);
277 if (!read_ec_data(priv->adev->handle, VPCCMD_R_CAMERA, &value))
278 seq_printf(s, "Camera status:\t%s(%lu)\n",
279 value ? "On" : "Off", value);
280 seq_puts(s, "=====================\n");
281
282 if (!method_gbmd(priv->adev->handle, &value)) {
283 seq_printf(s, "Conservation mode:\t%s(%lu)\n",
284 test_bit(BM_CONSERVATION_BIT, &value) ? "On" : "Off",
285 value);
286 }
287
288 return 0;
289}
290DEFINE_SHOW_ATTRIBUTE(debugfs_status);
291
292static int debugfs_cfg_show(struct seq_file *s, void *data)
293{
294 struct ideapad_private *priv = s->private;
295
296 if (!priv) {
297 seq_printf(s, "cfg: N/A\n");
298 } else {
299 seq_printf(s, "cfg: 0x%.8lX\n\nCapability: ",
300 priv->cfg);
301 if (test_bit(CFG_BT_BIT, &priv->cfg))
302 seq_printf(s, "Bluetooth ");
303 if (test_bit(CFG_3G_BIT, &priv->cfg))
304 seq_printf(s, "3G ");
305 if (test_bit(CFG_WIFI_BIT, &priv->cfg))
306 seq_printf(s, "Wireless ");
307 if (test_bit(CFG_CAMERA_BIT, &priv->cfg))
308 seq_printf(s, "Camera ");
309 seq_printf(s, "\nGraphic: ");
310 switch ((priv->cfg)&0x700) {
311 case 0x100:
312 seq_printf(s, "Intel");
313 break;
314 case 0x200:
315 seq_printf(s, "ATI");
316 break;
317 case 0x300:
318 seq_printf(s, "Nvidia");
319 break;
320 case 0x400:
321 seq_printf(s, "Intel and ATI");
322 break;
323 case 0x500:
324 seq_printf(s, "Intel and Nvidia");
325 break;
326 }
327 seq_printf(s, "\n");
328 }
329 return 0;
330}
331DEFINE_SHOW_ATTRIBUTE(debugfs_cfg);
332
333static int ideapad_debugfs_init(struct ideapad_private *priv)
334{
335 struct dentry *node;
336
337 priv->debug = debugfs_create_dir("ideapad", NULL);
338 if (priv->debug == NULL) {
339 pr_err("failed to create debugfs directory");
340 goto errout;
341 }
342
343 node = debugfs_create_file("cfg", S_IRUGO, priv->debug, priv,
344 &debugfs_cfg_fops);
345 if (!node) {
346 pr_err("failed to create cfg in debugfs");
347 goto errout;
348 }
349
350 node = debugfs_create_file("status", S_IRUGO, priv->debug, priv,
351 &debugfs_status_fops);
352 if (!node) {
353 pr_err("failed to create status in debugfs");
354 goto errout;
355 }
356
357 return 0;
358
359errout:
360 return -ENOMEM;
361}
362
363static void ideapad_debugfs_exit(struct ideapad_private *priv)
364{
365 debugfs_remove_recursive(priv->debug);
366 priv->debug = NULL;
367}
368
369
370
371
372static ssize_t show_ideapad_cam(struct device *dev,
373 struct device_attribute *attr,
374 char *buf)
375{
376 unsigned long result;
377 struct ideapad_private *priv = dev_get_drvdata(dev);
378
379 if (read_ec_data(priv->adev->handle, VPCCMD_R_CAMERA, &result))
380 return sprintf(buf, "-1\n");
381 return sprintf(buf, "%lu\n", result);
382}
383
384static ssize_t store_ideapad_cam(struct device *dev,
385 struct device_attribute *attr,
386 const char *buf, size_t count)
387{
388 int ret, state;
389 struct ideapad_private *priv = dev_get_drvdata(dev);
390
391 if (!count)
392 return 0;
393 if (sscanf(buf, "%i", &state) != 1)
394 return -EINVAL;
395 ret = write_ec_cmd(priv->adev->handle, VPCCMD_W_CAMERA, state);
396 if (ret < 0)
397 return -EIO;
398 return count;
399}
400
401static DEVICE_ATTR(camera_power, 0644, show_ideapad_cam, store_ideapad_cam);
402
403static ssize_t show_ideapad_fan(struct device *dev,
404 struct device_attribute *attr,
405 char *buf)
406{
407 unsigned long result;
408 struct ideapad_private *priv = dev_get_drvdata(dev);
409
410 if (read_ec_data(priv->adev->handle, VPCCMD_R_FAN, &result))
411 return sprintf(buf, "-1\n");
412 return sprintf(buf, "%lu\n", result);
413}
414
415static ssize_t store_ideapad_fan(struct device *dev,
416 struct device_attribute *attr,
417 const char *buf, size_t count)
418{
419 int ret, state;
420 struct ideapad_private *priv = dev_get_drvdata(dev);
421
422 if (!count)
423 return 0;
424 if (sscanf(buf, "%i", &state) != 1)
425 return -EINVAL;
426 if (state < 0 || state > 4 || state == 3)
427 return -EINVAL;
428 ret = write_ec_cmd(priv->adev->handle, VPCCMD_W_FAN, state);
429 if (ret < 0)
430 return -EIO;
431 return count;
432}
433
434static DEVICE_ATTR(fan_mode, 0644, show_ideapad_fan, store_ideapad_fan);
435
436static ssize_t touchpad_show(struct device *dev,
437 struct device_attribute *attr,
438 char *buf)
439{
440 struct ideapad_private *priv = dev_get_drvdata(dev);
441 unsigned long result;
442
443 if (read_ec_data(priv->adev->handle, VPCCMD_R_TOUCHPAD, &result))
444 return sprintf(buf, "-1\n");
445 return sprintf(buf, "%lu\n", result);
446}
447
448
449static ssize_t __maybe_unused touchpad_store(struct device *dev,
450 struct device_attribute *attr,
451 const char *buf, size_t count)
452{
453 struct ideapad_private *priv = dev_get_drvdata(dev);
454 bool state;
455 int ret;
456
457 ret = kstrtobool(buf, &state);
458 if (ret)
459 return ret;
460
461 ret = write_ec_cmd(priv->adev->handle, VPCCMD_W_TOUCHPAD, state);
462 if (ret < 0)
463 return -EIO;
464 return count;
465}
466
467static DEVICE_ATTR_RO(touchpad);
468
469static ssize_t conservation_mode_show(struct device *dev,
470 struct device_attribute *attr,
471 char *buf)
472{
473 struct ideapad_private *priv = dev_get_drvdata(dev);
474 unsigned long result;
475
476 if (method_gbmd(priv->adev->handle, &result))
477 return sprintf(buf, "-1\n");
478 return sprintf(buf, "%u\n", test_bit(BM_CONSERVATION_BIT, &result));
479}
480
481static ssize_t conservation_mode_store(struct device *dev,
482 struct device_attribute *attr,
483 const char *buf, size_t count)
484{
485 struct ideapad_private *priv = dev_get_drvdata(dev);
486 bool state;
487 int ret;
488
489 ret = kstrtobool(buf, &state);
490 if (ret)
491 return ret;
492
493 ret = method_int1(priv->adev->handle, "SBMC", state ?
494 BMCMD_CONSERVATION_ON :
495 BMCMD_CONSERVATION_OFF);
496 if (ret < 0)
497 return -EIO;
498 return count;
499}
500
501static DEVICE_ATTR_RW(conservation_mode);
502
503static ssize_t fn_lock_show(struct device *dev,
504 struct device_attribute *attr,
505 char *buf)
506{
507 struct ideapad_private *priv = dev_get_drvdata(dev);
508 unsigned long result;
509 int hals;
510 int fail = read_method_int(priv->adev->handle, "HALS", &hals);
511
512 if (fail)
513 return sprintf(buf, "-1\n");
514
515 result = hals;
516 return sprintf(buf, "%u\n", test_bit(HA_FNLOCK_BIT, &result));
517}
518
519static ssize_t fn_lock_store(struct device *dev,
520 struct device_attribute *attr,
521 const char *buf, size_t count)
522{
523 struct ideapad_private *priv = dev_get_drvdata(dev);
524 bool state;
525 int ret;
526
527 ret = kstrtobool(buf, &state);
528 if (ret)
529 return ret;
530
531 ret = method_int1(priv->adev->handle, "SALS", state ?
532 HACMD_FNLOCK_ON :
533 HACMD_FNLOCK_OFF);
534 if (ret < 0)
535 return -EIO;
536 return count;
537}
538
539static DEVICE_ATTR_RW(fn_lock);
540
541
542static struct attribute *ideapad_attributes[] = {
543 &dev_attr_camera_power.attr,
544 &dev_attr_fan_mode.attr,
545 &dev_attr_touchpad.attr,
546 &dev_attr_conservation_mode.attr,
547 &dev_attr_fn_lock.attr,
548 NULL
549};
550
551static umode_t ideapad_is_visible(struct kobject *kobj,
552 struct attribute *attr,
553 int idx)
554{
555 struct device *dev = container_of(kobj, struct device, kobj);
556 struct ideapad_private *priv = dev_get_drvdata(dev);
557 bool supported;
558
559 if (attr == &dev_attr_camera_power.attr)
560 supported = test_bit(CFG_CAMERA_BIT, &(priv->cfg));
561 else if (attr == &dev_attr_fan_mode.attr) {
562 unsigned long value;
563 supported = !read_ec_data(priv->adev->handle, VPCCMD_R_FAN,
564 &value);
565 } else if (attr == &dev_attr_conservation_mode.attr) {
566 supported = acpi_has_method(priv->adev->handle, "GBMD") &&
567 acpi_has_method(priv->adev->handle, "SBMC");
568 } else if (attr == &dev_attr_fn_lock.attr) {
569 supported = acpi_has_method(priv->adev->handle, "HALS") &&
570 acpi_has_method(priv->adev->handle, "SALS");
571 } else
572 supported = true;
573
574 return supported ? attr->mode : 0;
575}
576
577static const struct attribute_group ideapad_attribute_group = {
578 .is_visible = ideapad_is_visible,
579 .attrs = ideapad_attributes
580};
581
582
583
584
585struct ideapad_rfk_data {
586 char *name;
587 int cfgbit;
588 int opcode;
589 int type;
590};
591
592static const struct ideapad_rfk_data ideapad_rfk_data[] = {
593 { "ideapad_wlan", CFG_WIFI_BIT, VPCCMD_W_WIFI, RFKILL_TYPE_WLAN },
594 { "ideapad_bluetooth", CFG_BT_BIT, VPCCMD_W_BT, RFKILL_TYPE_BLUETOOTH },
595 { "ideapad_3g", CFG_3G_BIT, VPCCMD_W_3G, RFKILL_TYPE_WWAN },
596};
597
598static int ideapad_rfk_set(void *data, bool blocked)
599{
600 struct ideapad_rfk_priv *priv = data;
601 int opcode = ideapad_rfk_data[priv->dev].opcode;
602
603 return write_ec_cmd(priv->priv->adev->handle, opcode, !blocked);
604}
605
606static const struct rfkill_ops ideapad_rfk_ops = {
607 .set_block = ideapad_rfk_set,
608};
609
610static void ideapad_sync_rfk_state(struct ideapad_private *priv)
611{
612 unsigned long hw_blocked = 0;
613 int i;
614
615 if (priv->has_hw_rfkill_switch) {
616 if (read_ec_data(priv->adev->handle, VPCCMD_R_RF, &hw_blocked))
617 return;
618 hw_blocked = !hw_blocked;
619 }
620
621 for (i = 0; i < IDEAPAD_RFKILL_DEV_NUM; i++)
622 if (priv->rfk[i])
623 rfkill_set_hw_state(priv->rfk[i], hw_blocked);
624}
625
626static int ideapad_register_rfkill(struct ideapad_private *priv, int dev)
627{
628 int ret;
629 unsigned long sw_blocked;
630
631 if (no_bt_rfkill &&
632 (ideapad_rfk_data[dev].type == RFKILL_TYPE_BLUETOOTH)) {
633
634 write_ec_cmd(priv->adev->handle,
635 ideapad_rfk_data[dev].opcode, 1);
636 return 0;
637 }
638 priv->rfk_priv[dev].dev = dev;
639 priv->rfk_priv[dev].priv = priv;
640
641 priv->rfk[dev] = rfkill_alloc(ideapad_rfk_data[dev].name,
642 &priv->platform_device->dev,
643 ideapad_rfk_data[dev].type,
644 &ideapad_rfk_ops,
645 &priv->rfk_priv[dev]);
646 if (!priv->rfk[dev])
647 return -ENOMEM;
648
649 if (read_ec_data(priv->adev->handle, ideapad_rfk_data[dev].opcode-1,
650 &sw_blocked)) {
651 rfkill_init_sw_state(priv->rfk[dev], 0);
652 } else {
653 sw_blocked = !sw_blocked;
654 rfkill_init_sw_state(priv->rfk[dev], sw_blocked);
655 }
656
657 ret = rfkill_register(priv->rfk[dev]);
658 if (ret) {
659 rfkill_destroy(priv->rfk[dev]);
660 return ret;
661 }
662 return 0;
663}
664
665static void ideapad_unregister_rfkill(struct ideapad_private *priv, int dev)
666{
667 if (!priv->rfk[dev])
668 return;
669
670 rfkill_unregister(priv->rfk[dev]);
671 rfkill_destroy(priv->rfk[dev]);
672}
673
674
675
676
677static int ideapad_sysfs_init(struct ideapad_private *priv)
678{
679 return sysfs_create_group(&priv->platform_device->dev.kobj,
680 &ideapad_attribute_group);
681}
682
683static void ideapad_sysfs_exit(struct ideapad_private *priv)
684{
685 sysfs_remove_group(&priv->platform_device->dev.kobj,
686 &ideapad_attribute_group);
687}
688
689
690
691
692static const struct key_entry ideapad_keymap[] = {
693 { KE_KEY, 6, { KEY_SWITCHVIDEOMODE } },
694 { KE_KEY, 7, { KEY_CAMERA } },
695 { KE_KEY, 8, { KEY_MICMUTE } },
696 { KE_KEY, 11, { KEY_F16 } },
697 { KE_KEY, 13, { KEY_WLAN } },
698 { KE_KEY, 16, { KEY_PROG1 } },
699 { KE_KEY, 17, { KEY_PROG2 } },
700 { KE_KEY, 64, { KEY_PROG3 } },
701 { KE_KEY, 65, { KEY_PROG4 } },
702 { KE_KEY, 66, { KEY_TOUCHPAD_OFF } },
703 { KE_KEY, 67, { KEY_TOUCHPAD_ON } },
704 { KE_KEY, 128, { KEY_ESC } },
705
706 { KE_END, 0 },
707};
708
709static int ideapad_input_init(struct ideapad_private *priv)
710{
711 struct input_dev *inputdev;
712 int error;
713
714 inputdev = input_allocate_device();
715 if (!inputdev)
716 return -ENOMEM;
717
718 inputdev->name = "Ideapad extra buttons";
719 inputdev->phys = "ideapad/input0";
720 inputdev->id.bustype = BUS_HOST;
721 inputdev->dev.parent = &priv->platform_device->dev;
722
723 error = sparse_keymap_setup(inputdev, ideapad_keymap, NULL);
724 if (error) {
725 pr_err("Unable to setup input device keymap\n");
726 goto err_free_dev;
727 }
728
729 error = input_register_device(inputdev);
730 if (error) {
731 pr_err("Unable to register input device\n");
732 goto err_free_dev;
733 }
734
735 priv->inputdev = inputdev;
736 return 0;
737
738err_free_dev:
739 input_free_device(inputdev);
740 return error;
741}
742
743static void ideapad_input_exit(struct ideapad_private *priv)
744{
745 input_unregister_device(priv->inputdev);
746 priv->inputdev = NULL;
747}
748
749static void ideapad_input_report(struct ideapad_private *priv,
750 unsigned long scancode)
751{
752 sparse_keymap_report_event(priv->inputdev, scancode, 1, true);
753}
754
755static void ideapad_input_novokey(struct ideapad_private *priv)
756{
757 unsigned long long_pressed;
758
759 if (read_ec_data(priv->adev->handle, VPCCMD_R_NOVO, &long_pressed))
760 return;
761 if (long_pressed)
762 ideapad_input_report(priv, 17);
763 else
764 ideapad_input_report(priv, 16);
765}
766
767static void ideapad_check_special_buttons(struct ideapad_private *priv)
768{
769 unsigned long bit, value;
770
771 read_ec_data(priv->adev->handle, VPCCMD_R_SPECIAL_BUTTONS, &value);
772
773 for (bit = 0; bit < 16; bit++) {
774 if (test_bit(bit, &value)) {
775 switch (bit) {
776 case 0:
777 case 6:
778
779 ideapad_input_report(priv, 65);
780 break;
781 case 1:
782
783 ideapad_input_report(priv, 64);
784 break;
785 default:
786 pr_info("Unknown special button: %lu\n", bit);
787 break;
788 }
789 }
790 }
791}
792
793
794
795
796static int ideapad_backlight_get_brightness(struct backlight_device *blightdev)
797{
798 struct ideapad_private *priv = bl_get_data(blightdev);
799 unsigned long now;
800
801 if (!priv)
802 return -EINVAL;
803
804 if (read_ec_data(priv->adev->handle, VPCCMD_R_BL, &now))
805 return -EIO;
806 return now;
807}
808
809static int ideapad_backlight_update_status(struct backlight_device *blightdev)
810{
811 struct ideapad_private *priv = bl_get_data(blightdev);
812
813 if (!priv)
814 return -EINVAL;
815
816 if (write_ec_cmd(priv->adev->handle, VPCCMD_W_BL,
817 blightdev->props.brightness))
818 return -EIO;
819 if (write_ec_cmd(priv->adev->handle, VPCCMD_W_BL_POWER,
820 blightdev->props.power == FB_BLANK_POWERDOWN ? 0 : 1))
821 return -EIO;
822
823 return 0;
824}
825
826static const struct backlight_ops ideapad_backlight_ops = {
827 .get_brightness = ideapad_backlight_get_brightness,
828 .update_status = ideapad_backlight_update_status,
829};
830
831static int ideapad_backlight_init(struct ideapad_private *priv)
832{
833 struct backlight_device *blightdev;
834 struct backlight_properties props;
835 unsigned long max, now, power;
836
837 if (read_ec_data(priv->adev->handle, VPCCMD_R_BL_MAX, &max))
838 return -EIO;
839 if (read_ec_data(priv->adev->handle, VPCCMD_R_BL, &now))
840 return -EIO;
841 if (read_ec_data(priv->adev->handle, VPCCMD_R_BL_POWER, &power))
842 return -EIO;
843
844 memset(&props, 0, sizeof(struct backlight_properties));
845 props.max_brightness = max;
846 props.type = BACKLIGHT_PLATFORM;
847 blightdev = backlight_device_register("ideapad",
848 &priv->platform_device->dev,
849 priv,
850 &ideapad_backlight_ops,
851 &props);
852 if (IS_ERR(blightdev)) {
853 pr_err("Could not register backlight device\n");
854 return PTR_ERR(blightdev);
855 }
856
857 priv->blightdev = blightdev;
858 blightdev->props.brightness = now;
859 blightdev->props.power = power ? FB_BLANK_UNBLANK : FB_BLANK_POWERDOWN;
860 backlight_update_status(blightdev);
861
862 return 0;
863}
864
865static void ideapad_backlight_exit(struct ideapad_private *priv)
866{
867 backlight_device_unregister(priv->blightdev);
868 priv->blightdev = NULL;
869}
870
871static void ideapad_backlight_notify_power(struct ideapad_private *priv)
872{
873 unsigned long power;
874 struct backlight_device *blightdev = priv->blightdev;
875
876 if (!blightdev)
877 return;
878 if (read_ec_data(priv->adev->handle, VPCCMD_R_BL_POWER, &power))
879 return;
880 blightdev->props.power = power ? FB_BLANK_UNBLANK : FB_BLANK_POWERDOWN;
881}
882
883static void ideapad_backlight_notify_brightness(struct ideapad_private *priv)
884{
885 unsigned long now;
886
887
888 if (priv->blightdev == NULL) {
889 read_ec_data(priv->adev->handle, VPCCMD_R_BL, &now);
890 return;
891 }
892
893 backlight_force_update(priv->blightdev, BACKLIGHT_UPDATE_HOTKEY);
894}
895
896
897
898
899static void ideapad_sync_touchpad_state(struct ideapad_private *priv)
900{
901 unsigned long value;
902
903
904 if (!read_ec_data(priv->adev->handle, VPCCMD_R_TOUCHPAD, &value)) {
905
906
907
908
909 unsigned char param;
910 i8042_command(¶m, value ? I8042_CMD_AUX_ENABLE :
911 I8042_CMD_AUX_DISABLE);
912 ideapad_input_report(priv, value ? 67 : 66);
913 }
914}
915
916static void ideapad_acpi_notify(acpi_handle handle, u32 event, void *data)
917{
918 struct ideapad_private *priv = data;
919 unsigned long vpc1, vpc2, vpc_bit;
920
921 if (read_ec_data(handle, VPCCMD_R_VPC1, &vpc1))
922 return;
923 if (read_ec_data(handle, VPCCMD_R_VPC2, &vpc2))
924 return;
925
926 vpc1 = (vpc2 << 8) | vpc1;
927 for (vpc_bit = 0; vpc_bit < 16; vpc_bit++) {
928 if (test_bit(vpc_bit, &vpc1)) {
929 switch (vpc_bit) {
930 case 9:
931 ideapad_sync_rfk_state(priv);
932 break;
933 case 13:
934 case 11:
935 case 8:
936 case 7:
937 case 6:
938 ideapad_input_report(priv, vpc_bit);
939 break;
940 case 5:
941 ideapad_sync_touchpad_state(priv);
942 break;
943 case 4:
944 ideapad_backlight_notify_brightness(priv);
945 break;
946 case 3:
947 ideapad_input_novokey(priv);
948 break;
949 case 2:
950 ideapad_backlight_notify_power(priv);
951 break;
952 case 0:
953 ideapad_check_special_buttons(priv);
954 break;
955 case 1:
956
957
958
959
960
961 break;
962 default:
963 pr_info("Unknown event: %lu\n", vpc_bit);
964 }
965 }
966 }
967}
968
969#if IS_ENABLED(CONFIG_ACPI_WMI)
970static void ideapad_wmi_notify(u32 value, void *context)
971{
972 switch (value) {
973 case 128:
974 ideapad_input_report(context, value);
975 break;
976 default:
977 pr_info("Unknown WMI event %u\n", value);
978 }
979}
980#endif
981
982
983
984
985
986
987static const struct dmi_system_id no_hw_rfkill_list[] = {
988 {
989 .ident = "Lenovo RESCUER R720-15IKBN",
990 .matches = {
991 DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
992 DMI_MATCH(DMI_BOARD_NAME, "80WW"),
993 },
994 },
995 {
996 .ident = "Lenovo G40-30",
997 .matches = {
998 DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
999 DMI_MATCH(DMI_PRODUCT_VERSION, "Lenovo G40-30"),
1000 },
1001 },
1002 {
1003 .ident = "Lenovo G50-30",
1004 .matches = {
1005 DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
1006 DMI_MATCH(DMI_PRODUCT_VERSION, "Lenovo G50-30"),
1007 },
1008 },
1009 {
1010 .ident = "Lenovo V310-14IKB",
1011 .matches = {
1012 DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
1013 DMI_MATCH(DMI_PRODUCT_VERSION, "Lenovo V310-14IKB"),
1014 },
1015 },
1016 {
1017 .ident = "Lenovo V310-14ISK",
1018 .matches = {
1019 DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
1020 DMI_MATCH(DMI_PRODUCT_VERSION, "Lenovo V310-14ISK"),
1021 },
1022 },
1023 {
1024 .ident = "Lenovo V310-15IKB",
1025 .matches = {
1026 DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
1027 DMI_MATCH(DMI_PRODUCT_VERSION, "Lenovo V310-15IKB"),
1028 },
1029 },
1030 {
1031 .ident = "Lenovo V310-15ISK",
1032 .matches = {
1033 DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
1034 DMI_MATCH(DMI_PRODUCT_VERSION, "Lenovo V310-15ISK"),
1035 },
1036 },
1037 {
1038 .ident = "Lenovo V510-15IKB",
1039 .matches = {
1040 DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
1041 DMI_MATCH(DMI_PRODUCT_VERSION, "Lenovo V510-15IKB"),
1042 },
1043 },
1044 {
1045 .ident = "Lenovo ideapad 300-15IBR",
1046 .matches = {
1047 DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
1048 DMI_MATCH(DMI_PRODUCT_VERSION, "Lenovo ideapad 300-15IBR"),
1049 },
1050 },
1051 {
1052 .ident = "Lenovo ideapad 300-15IKB",
1053 .matches = {
1054 DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
1055 DMI_MATCH(DMI_PRODUCT_VERSION, "Lenovo ideapad 300-15IKB"),
1056 },
1057 },
1058 {
1059 .ident = "Lenovo ideapad 300S-11IBR",
1060 .matches = {
1061 DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
1062 DMI_MATCH(DMI_PRODUCT_VERSION, "Lenovo ideapad 300S-11BR"),
1063 },
1064 },
1065 {
1066 .ident = "Lenovo ideapad 310-15ABR",
1067 .matches = {
1068 DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
1069 DMI_MATCH(DMI_PRODUCT_VERSION, "Lenovo ideapad 310-15ABR"),
1070 },
1071 },
1072 {
1073 .ident = "Lenovo ideapad 310-15IAP",
1074 .matches = {
1075 DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
1076 DMI_MATCH(DMI_PRODUCT_VERSION, "Lenovo ideapad 310-15IAP"),
1077 },
1078 },
1079 {
1080 .ident = "Lenovo ideapad 310-15IKB",
1081 .matches = {
1082 DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
1083 DMI_MATCH(DMI_PRODUCT_VERSION, "Lenovo ideapad 310-15IKB"),
1084 },
1085 },
1086 {
1087 .ident = "Lenovo ideapad 310-15ISK",
1088 .matches = {
1089 DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
1090 DMI_MATCH(DMI_PRODUCT_VERSION, "Lenovo ideapad 310-15ISK"),
1091 },
1092 },
1093 {
1094 .ident = "Lenovo ideapad Y700-14ISK",
1095 .matches = {
1096 DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
1097 DMI_MATCH(DMI_PRODUCT_VERSION, "Lenovo ideapad Y700-14ISK"),
1098 },
1099 },
1100 {
1101 .ident = "Lenovo ideapad Y700-15ACZ",
1102 .matches = {
1103 DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
1104 DMI_MATCH(DMI_PRODUCT_VERSION, "Lenovo ideapad Y700-15ACZ"),
1105 },
1106 },
1107 {
1108 .ident = "Lenovo ideapad Y700-15ISK",
1109 .matches = {
1110 DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
1111 DMI_MATCH(DMI_PRODUCT_VERSION, "Lenovo ideapad Y700-15ISK"),
1112 },
1113 },
1114 {
1115 .ident = "Lenovo ideapad Y700 Touch-15ISK",
1116 .matches = {
1117 DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
1118 DMI_MATCH(DMI_PRODUCT_VERSION, "Lenovo ideapad Y700 Touch-15ISK"),
1119 },
1120 },
1121 {
1122 .ident = "Lenovo ideapad Y700-17ISK",
1123 .matches = {
1124 DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
1125 DMI_MATCH(DMI_PRODUCT_VERSION, "Lenovo ideapad Y700-17ISK"),
1126 },
1127 },
1128 {
1129 .ident = "Lenovo ideapad MIIX 720-12IKB",
1130 .matches = {
1131 DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
1132 DMI_MATCH(DMI_PRODUCT_VERSION, "MIIX 720-12IKB"),
1133 },
1134 },
1135 {
1136 .ident = "Lenovo Legion Y520-15IKB",
1137 .matches = {
1138 DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
1139 DMI_MATCH(DMI_PRODUCT_VERSION, "Lenovo Y520-15IKB"),
1140 },
1141 },
1142 {
1143 .ident = "Lenovo Y520-15IKBM",
1144 .matches = {
1145 DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
1146 DMI_MATCH(DMI_PRODUCT_VERSION, "Lenovo Y520-15IKBM"),
1147 },
1148 },
1149 {
1150 .ident = "Lenovo Legion Y530-15ICH",
1151 .matches = {
1152 DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
1153 DMI_MATCH(DMI_PRODUCT_VERSION, "Lenovo Legion Y530-15ICH"),
1154 },
1155 },
1156 {
1157 .ident = "Lenovo Legion Y720-15IKB",
1158 .matches = {
1159 DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
1160 DMI_MATCH(DMI_PRODUCT_VERSION, "Lenovo Y720-15IKB"),
1161 },
1162 },
1163 {
1164 .ident = "Lenovo Legion Y720-15IKBN",
1165 .matches = {
1166 DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
1167 DMI_MATCH(DMI_PRODUCT_VERSION, "Lenovo Y720-15IKBN"),
1168 },
1169 },
1170 {
1171 .ident = "Lenovo Y720-15IKBM",
1172 .matches = {
1173 DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
1174 DMI_MATCH(DMI_PRODUCT_VERSION, "Lenovo Y720-15IKBM"),
1175 },
1176 },
1177 {
1178 .ident = "Lenovo Yoga 2 11 / 13 / Pro",
1179 .matches = {
1180 DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
1181 DMI_MATCH(DMI_PRODUCT_VERSION, "Lenovo Yoga 2"),
1182 },
1183 },
1184 {
1185 .ident = "Lenovo Yoga 2 11 / 13 / Pro",
1186 .matches = {
1187 DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
1188 DMI_MATCH(DMI_BOARD_NAME, "Yoga2"),
1189 },
1190 },
1191 {
1192 .ident = "Lenovo Yoga 2 13",
1193 .matches = {
1194 DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
1195 DMI_MATCH(DMI_PRODUCT_VERSION, "Yoga 2 13"),
1196 },
1197 },
1198 {
1199 .ident = "Lenovo Yoga 3 1170 / 1470",
1200 .matches = {
1201 DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
1202 DMI_MATCH(DMI_PRODUCT_VERSION, "Lenovo Yoga 3"),
1203 },
1204 },
1205 {
1206 .ident = "Lenovo Yoga 3 Pro 1370",
1207 .matches = {
1208 DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
1209 DMI_MATCH(DMI_PRODUCT_VERSION, "Lenovo YOGA 3"),
1210 },
1211 },
1212 {
1213 .ident = "Lenovo Yoga 700",
1214 .matches = {
1215 DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
1216 DMI_MATCH(DMI_PRODUCT_VERSION, "Lenovo YOGA 700"),
1217 },
1218 },
1219 {
1220 .ident = "Lenovo Yoga 900",
1221 .matches = {
1222 DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
1223 DMI_MATCH(DMI_PRODUCT_VERSION, "Lenovo YOGA 900"),
1224 },
1225 },
1226 {
1227 .ident = "Lenovo Yoga 900",
1228 .matches = {
1229 DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
1230 DMI_MATCH(DMI_BOARD_NAME, "VIUU4"),
1231 },
1232 },
1233 {
1234 .ident = "Lenovo YOGA 910-13IKB",
1235 .matches = {
1236 DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
1237 DMI_MATCH(DMI_PRODUCT_VERSION, "Lenovo YOGA 910-13IKB"),
1238 },
1239 },
1240 {
1241 .ident = "Lenovo YOGA 920-13IKB",
1242 .matches = {
1243 DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
1244 DMI_MATCH(DMI_PRODUCT_VERSION, "Lenovo YOGA 920-13IKB"),
1245 },
1246 },
1247 {
1248 .ident = "Lenovo Zhaoyang E42-80",
1249 .matches = {
1250 DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
1251 DMI_MATCH(DMI_PRODUCT_VERSION, "ZHAOYANG E42-80"),
1252 },
1253 },
1254 {}
1255};
1256
1257static int ideapad_acpi_add(struct platform_device *pdev)
1258{
1259 int ret, i;
1260 int cfg;
1261 struct ideapad_private *priv;
1262 struct acpi_device *adev;
1263
1264 ret = acpi_bus_get_device(ACPI_HANDLE(&pdev->dev), &adev);
1265 if (ret)
1266 return -ENODEV;
1267
1268 if (read_method_int(adev->handle, "_CFG", &cfg))
1269 return -ENODEV;
1270
1271 priv = devm_kzalloc(&pdev->dev, sizeof(*priv), GFP_KERNEL);
1272 if (!priv)
1273 return -ENOMEM;
1274
1275 dev_set_drvdata(&pdev->dev, priv);
1276 priv->cfg = cfg;
1277 priv->adev = adev;
1278 priv->platform_device = pdev;
1279 priv->has_hw_rfkill_switch = !dmi_check_system(no_hw_rfkill_list);
1280
1281 ret = ideapad_sysfs_init(priv);
1282 if (ret)
1283 return ret;
1284
1285 ret = ideapad_debugfs_init(priv);
1286 if (ret)
1287 goto debugfs_failed;
1288
1289 ret = ideapad_input_init(priv);
1290 if (ret)
1291 goto input_failed;
1292
1293
1294
1295
1296
1297 if (!priv->has_hw_rfkill_switch)
1298 write_ec_cmd(priv->adev->handle, VPCCMD_W_RF, 1);
1299
1300 for (i = 0; i < IDEAPAD_RFKILL_DEV_NUM; i++)
1301 if (test_bit(ideapad_rfk_data[i].cfgbit, &priv->cfg))
1302 ideapad_register_rfkill(priv, i);
1303
1304 ideapad_sync_rfk_state(priv);
1305 ideapad_sync_touchpad_state(priv);
1306
1307 if (acpi_video_get_backlight_type() == acpi_backlight_vendor) {
1308 ret = ideapad_backlight_init(priv);
1309 if (ret && ret != -ENODEV)
1310 goto backlight_failed;
1311 }
1312 ret = acpi_install_notify_handler(adev->handle,
1313 ACPI_DEVICE_NOTIFY, ideapad_acpi_notify, priv);
1314 if (ret)
1315 goto notification_failed;
1316
1317#if IS_ENABLED(CONFIG_ACPI_WMI)
1318 for (i = 0; i < ARRAY_SIZE(ideapad_wmi_fnesc_events); i++) {
1319 ret = wmi_install_notify_handler(ideapad_wmi_fnesc_events[i],
1320 ideapad_wmi_notify, priv);
1321 if (ret == AE_OK) {
1322 priv->fnesc_guid = ideapad_wmi_fnesc_events[i];
1323 break;
1324 }
1325 }
1326 if (ret != AE_OK && ret != AE_NOT_EXIST)
1327 goto notification_failed_wmi;
1328#endif
1329
1330 return 0;
1331#if IS_ENABLED(CONFIG_ACPI_WMI)
1332notification_failed_wmi:
1333 acpi_remove_notify_handler(priv->adev->handle,
1334 ACPI_DEVICE_NOTIFY, ideapad_acpi_notify);
1335#endif
1336notification_failed:
1337 ideapad_backlight_exit(priv);
1338backlight_failed:
1339 for (i = 0; i < IDEAPAD_RFKILL_DEV_NUM; i++)
1340 ideapad_unregister_rfkill(priv, i);
1341 ideapad_input_exit(priv);
1342input_failed:
1343 ideapad_debugfs_exit(priv);
1344debugfs_failed:
1345 ideapad_sysfs_exit(priv);
1346 return ret;
1347}
1348
1349static int ideapad_acpi_remove(struct platform_device *pdev)
1350{
1351 struct ideapad_private *priv = dev_get_drvdata(&pdev->dev);
1352 int i;
1353
1354#if IS_ENABLED(CONFIG_ACPI_WMI)
1355 if (priv->fnesc_guid)
1356 wmi_remove_notify_handler(priv->fnesc_guid);
1357#endif
1358 acpi_remove_notify_handler(priv->adev->handle,
1359 ACPI_DEVICE_NOTIFY, ideapad_acpi_notify);
1360 ideapad_backlight_exit(priv);
1361 for (i = 0; i < IDEAPAD_RFKILL_DEV_NUM; i++)
1362 ideapad_unregister_rfkill(priv, i);
1363 ideapad_input_exit(priv);
1364 ideapad_debugfs_exit(priv);
1365 ideapad_sysfs_exit(priv);
1366 dev_set_drvdata(&pdev->dev, NULL);
1367
1368 return 0;
1369}
1370
1371#ifdef CONFIG_PM_SLEEP
1372static int ideapad_acpi_resume(struct device *device)
1373{
1374 struct ideapad_private *priv;
1375
1376 if (!device)
1377 return -EINVAL;
1378 priv = dev_get_drvdata(device);
1379
1380 ideapad_sync_rfk_state(priv);
1381 ideapad_sync_touchpad_state(priv);
1382 return 0;
1383}
1384#endif
1385static SIMPLE_DEV_PM_OPS(ideapad_pm, NULL, ideapad_acpi_resume);
1386
1387static const struct acpi_device_id ideapad_device_ids[] = {
1388 { "VPC2004", 0},
1389 { "", 0},
1390};
1391MODULE_DEVICE_TABLE(acpi, ideapad_device_ids);
1392
1393static struct platform_driver ideapad_acpi_driver = {
1394 .probe = ideapad_acpi_add,
1395 .remove = ideapad_acpi_remove,
1396 .driver = {
1397 .name = "ideapad_acpi",
1398 .pm = &ideapad_pm,
1399 .acpi_match_table = ACPI_PTR(ideapad_device_ids),
1400 },
1401};
1402
1403module_platform_driver(ideapad_acpi_driver);
1404
1405MODULE_AUTHOR("David Woodhouse <dwmw2@infradead.org>");
1406MODULE_DESCRIPTION("IdeaPad ACPI Extras");
1407MODULE_LICENSE("GPL");
1408
