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9#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
10
11#include <linux/kernel.h>
12#include <linux/module.h>
13#include <linux/init.h>
14#include <linux/types.h>
15#include <linux/acpi.h>
16#include <linux/rfkill.h>
17#include <linux/platform_device.h>
18#include <linux/input.h>
19#include <linux/input/sparse-keymap.h>
20#include <linux/backlight.h>
21#include <linux/fb.h>
22#include <linux/debugfs.h>
23#include <linux/seq_file.h>
24#include <linux/i8042.h>
25#include <linux/dmi.h>
26#include <linux/device.h>
27#include <acpi/video.h>
28
29#define IDEAPAD_RFKILL_DEV_NUM (3)
30
31#define BM_CONSERVATION_BIT (5)
32#define HA_FNLOCK_BIT (10)
33
34#define CFG_BT_BIT (16)
35#define CFG_3G_BIT (17)
36#define CFG_WIFI_BIT (18)
37#define CFG_CAMERA_BIT (19)
38
39#if IS_ENABLED(CONFIG_ACPI_WMI)
40static const char *const ideapad_wmi_fnesc_events[] = {
41 "26CAB2E5-5CF1-46AE-AAC3-4A12B6BA50E6",
42 "56322276-8493-4CE8-A783-98C991274F5E",
43};
44#endif
45
46enum {
47 BMCMD_CONSERVATION_ON = 3,
48 BMCMD_CONSERVATION_OFF = 5,
49 HACMD_FNLOCK_ON = 0xe,
50 HACMD_FNLOCK_OFF = 0xf,
51};
52
53enum {
54 VPCCMD_R_VPC1 = 0x10,
55 VPCCMD_R_BL_MAX,
56 VPCCMD_R_BL,
57 VPCCMD_W_BL,
58 VPCCMD_R_WIFI,
59 VPCCMD_W_WIFI,
60 VPCCMD_R_BT,
61 VPCCMD_W_BT,
62 VPCCMD_R_BL_POWER,
63 VPCCMD_R_NOVO,
64 VPCCMD_R_VPC2,
65 VPCCMD_R_TOUCHPAD,
66 VPCCMD_W_TOUCHPAD,
67 VPCCMD_R_CAMERA,
68 VPCCMD_W_CAMERA,
69 VPCCMD_R_3G,
70 VPCCMD_W_3G,
71 VPCCMD_R_ODD,
72 VPCCMD_W_FAN,
73 VPCCMD_R_RF,
74 VPCCMD_W_RF,
75 VPCCMD_R_FAN = 0x2B,
76 VPCCMD_R_SPECIAL_BUTTONS = 0x31,
77 VPCCMD_W_BL_POWER = 0x33,
78};
79
80struct ideapad_rfk_priv {
81 int dev;
82 struct ideapad_private *priv;
83};
84
85struct ideapad_private {
86 struct acpi_device *adev;
87 struct rfkill *rfk[IDEAPAD_RFKILL_DEV_NUM];
88 struct ideapad_rfk_priv rfk_priv[IDEAPAD_RFKILL_DEV_NUM];
89 struct platform_device *platform_device;
90 struct input_dev *inputdev;
91 struct backlight_device *blightdev;
92 struct dentry *debug;
93 unsigned long cfg;
94 bool has_hw_rfkill_switch;
95 const char *fnesc_guid;
96};
97
98static bool no_bt_rfkill;
99module_param(no_bt_rfkill, bool, 0444);
100MODULE_PARM_DESC(no_bt_rfkill, "No rfkill for bluetooth.");
101
102
103
104
105#define IDEAPAD_EC_TIMEOUT (200)
106
107static int read_method_int(acpi_handle handle, const char *method, int *val)
108{
109 acpi_status status;
110 unsigned long long result;
111
112 status = acpi_evaluate_integer(handle, (char *)method, NULL, &result);
113 if (ACPI_FAILURE(status)) {
114 *val = -1;
115 return -1;
116 }
117 *val = result;
118 return 0;
119
120}
121
122static int method_gbmd(acpi_handle handle, unsigned long *ret)
123{
124 int result, val;
125
126 result = read_method_int(handle, "GBMD", &val);
127 *ret = val;
128 return result;
129}
130
131static int method_int1(acpi_handle handle, char *method, int cmd)
132{
133 acpi_status status;
134
135 status = acpi_execute_simple_method(handle, method, cmd);
136 return ACPI_FAILURE(status) ? -1 : 0;
137}
138
139static int method_vpcr(acpi_handle handle, int cmd, int *ret)
140{
141 acpi_status status;
142 unsigned long long result;
143 struct acpi_object_list params;
144 union acpi_object in_obj;
145
146 params.count = 1;
147 params.pointer = &in_obj;
148 in_obj.type = ACPI_TYPE_INTEGER;
149 in_obj.integer.value = cmd;
150
151 status = acpi_evaluate_integer(handle, "VPCR", ¶ms, &result);
152
153 if (ACPI_FAILURE(status)) {
154 *ret = -1;
155 return -1;
156 }
157 *ret = result;
158 return 0;
159
160}
161
162static int method_vpcw(acpi_handle handle, int cmd, int data)
163{
164 struct acpi_object_list params;
165 union acpi_object in_obj[2];
166 acpi_status status;
167
168 params.count = 2;
169 params.pointer = in_obj;
170 in_obj[0].type = ACPI_TYPE_INTEGER;
171 in_obj[0].integer.value = cmd;
172 in_obj[1].type = ACPI_TYPE_INTEGER;
173 in_obj[1].integer.value = data;
174
175 status = acpi_evaluate_object(handle, "VPCW", ¶ms, NULL);
176 if (status != AE_OK)
177 return -1;
178 return 0;
179}
180
181static int read_ec_data(acpi_handle handle, int cmd, unsigned long *data)
182{
183 int val;
184 unsigned long int end_jiffies;
185
186 if (method_vpcw(handle, 1, cmd))
187 return -1;
188
189 for (end_jiffies = jiffies+(HZ)*IDEAPAD_EC_TIMEOUT/1000+1;
190 time_before(jiffies, end_jiffies);) {
191 schedule();
192 if (method_vpcr(handle, 1, &val))
193 return -1;
194 if (val == 0) {
195 if (method_vpcr(handle, 0, &val))
196 return -1;
197 *data = val;
198 return 0;
199 }
200 }
201 pr_err("timeout in %s\n", __func__);
202 return -1;
203}
204
205static int write_ec_cmd(acpi_handle handle, int cmd, unsigned long data)
206{
207 int val;
208 unsigned long int end_jiffies;
209
210 if (method_vpcw(handle, 0, data))
211 return -1;
212 if (method_vpcw(handle, 1, cmd))
213 return -1;
214
215 for (end_jiffies = jiffies+(HZ)*IDEAPAD_EC_TIMEOUT/1000+1;
216 time_before(jiffies, end_jiffies);) {
217 schedule();
218 if (method_vpcr(handle, 1, &val))
219 return -1;
220 if (val == 0)
221 return 0;
222 }
223 pr_err("timeout in %s\n", __func__);
224 return -1;
225}
226
227
228
229
230static int debugfs_status_show(struct seq_file *s, void *data)
231{
232 struct ideapad_private *priv = s->private;
233 unsigned long value;
234
235 if (!priv)
236 return -EINVAL;
237
238 if (!read_ec_data(priv->adev->handle, VPCCMD_R_BL_MAX, &value))
239 seq_printf(s, "Backlight max:\t%lu\n", value);
240 if (!read_ec_data(priv->adev->handle, VPCCMD_R_BL, &value))
241 seq_printf(s, "Backlight now:\t%lu\n", value);
242 if (!read_ec_data(priv->adev->handle, VPCCMD_R_BL_POWER, &value))
243 seq_printf(s, "BL power value:\t%s\n", value ? "On" : "Off");
244 seq_printf(s, "=====================\n");
245
246 if (!read_ec_data(priv->adev->handle, VPCCMD_R_RF, &value))
247 seq_printf(s, "Radio status:\t%s(%lu)\n",
248 value ? "On" : "Off", value);
249 if (!read_ec_data(priv->adev->handle, VPCCMD_R_WIFI, &value))
250 seq_printf(s, "Wifi status:\t%s(%lu)\n",
251 value ? "On" : "Off", value);
252 if (!read_ec_data(priv->adev->handle, VPCCMD_R_BT, &value))
253 seq_printf(s, "BT status:\t%s(%lu)\n",
254 value ? "On" : "Off", value);
255 if (!read_ec_data(priv->adev->handle, VPCCMD_R_3G, &value))
256 seq_printf(s, "3G status:\t%s(%lu)\n",
257 value ? "On" : "Off", value);
258 seq_printf(s, "=====================\n");
259
260 if (!read_ec_data(priv->adev->handle, VPCCMD_R_TOUCHPAD, &value))
261 seq_printf(s, "Touchpad status:%s(%lu)\n",
262 value ? "On" : "Off", value);
263 if (!read_ec_data(priv->adev->handle, VPCCMD_R_CAMERA, &value))
264 seq_printf(s, "Camera status:\t%s(%lu)\n",
265 value ? "On" : "Off", value);
266 seq_puts(s, "=====================\n");
267
268 if (!method_gbmd(priv->adev->handle, &value)) {
269 seq_printf(s, "Conservation mode:\t%s(%lu)\n",
270 test_bit(BM_CONSERVATION_BIT, &value) ? "On" : "Off",
271 value);
272 }
273
274 return 0;
275}
276DEFINE_SHOW_ATTRIBUTE(debugfs_status);
277
278static int debugfs_cfg_show(struct seq_file *s, void *data)
279{
280 struct ideapad_private *priv = s->private;
281
282 if (!priv) {
283 seq_printf(s, "cfg: N/A\n");
284 } else {
285 seq_printf(s, "cfg: 0x%.8lX\n\nCapability: ",
286 priv->cfg);
287 if (test_bit(CFG_BT_BIT, &priv->cfg))
288 seq_printf(s, "Bluetooth ");
289 if (test_bit(CFG_3G_BIT, &priv->cfg))
290 seq_printf(s, "3G ");
291 if (test_bit(CFG_WIFI_BIT, &priv->cfg))
292 seq_printf(s, "Wireless ");
293 if (test_bit(CFG_CAMERA_BIT, &priv->cfg))
294 seq_printf(s, "Camera ");
295 seq_printf(s, "\nGraphic: ");
296 switch ((priv->cfg)&0x700) {
297 case 0x100:
298 seq_printf(s, "Intel");
299 break;
300 case 0x200:
301 seq_printf(s, "ATI");
302 break;
303 case 0x300:
304 seq_printf(s, "Nvidia");
305 break;
306 case 0x400:
307 seq_printf(s, "Intel and ATI");
308 break;
309 case 0x500:
310 seq_printf(s, "Intel and Nvidia");
311 break;
312 }
313 seq_printf(s, "\n");
314 }
315 return 0;
316}
317DEFINE_SHOW_ATTRIBUTE(debugfs_cfg);
318
319static void ideapad_debugfs_init(struct ideapad_private *priv)
320{
321 struct dentry *dir;
322
323 dir = debugfs_create_dir("ideapad", NULL);
324 priv->debug = dir;
325
326 debugfs_create_file("cfg", S_IRUGO, dir, priv, &debugfs_cfg_fops);
327 debugfs_create_file("status", S_IRUGO, dir, priv, &debugfs_status_fops);
328}
329
330static void ideapad_debugfs_exit(struct ideapad_private *priv)
331{
332 debugfs_remove_recursive(priv->debug);
333 priv->debug = NULL;
334}
335
336
337
338
339static ssize_t show_ideapad_cam(struct device *dev,
340 struct device_attribute *attr,
341 char *buf)
342{
343 unsigned long result;
344 struct ideapad_private *priv = dev_get_drvdata(dev);
345
346 if (read_ec_data(priv->adev->handle, VPCCMD_R_CAMERA, &result))
347 return sprintf(buf, "-1\n");
348 return sprintf(buf, "%lu\n", result);
349}
350
351static ssize_t store_ideapad_cam(struct device *dev,
352 struct device_attribute *attr,
353 const char *buf, size_t count)
354{
355 int ret, state;
356 struct ideapad_private *priv = dev_get_drvdata(dev);
357
358 if (!count)
359 return 0;
360 if (sscanf(buf, "%i", &state) != 1)
361 return -EINVAL;
362 ret = write_ec_cmd(priv->adev->handle, VPCCMD_W_CAMERA, state);
363 if (ret < 0)
364 return -EIO;
365 return count;
366}
367
368static DEVICE_ATTR(camera_power, 0644, show_ideapad_cam, store_ideapad_cam);
369
370static ssize_t show_ideapad_fan(struct device *dev,
371 struct device_attribute *attr,
372 char *buf)
373{
374 unsigned long result;
375 struct ideapad_private *priv = dev_get_drvdata(dev);
376
377 if (read_ec_data(priv->adev->handle, VPCCMD_R_FAN, &result))
378 return sprintf(buf, "-1\n");
379 return sprintf(buf, "%lu\n", result);
380}
381
382static ssize_t store_ideapad_fan(struct device *dev,
383 struct device_attribute *attr,
384 const char *buf, size_t count)
385{
386 int ret, state;
387 struct ideapad_private *priv = dev_get_drvdata(dev);
388
389 if (!count)
390 return 0;
391 if (sscanf(buf, "%i", &state) != 1)
392 return -EINVAL;
393 if (state < 0 || state > 4 || state == 3)
394 return -EINVAL;
395 ret = write_ec_cmd(priv->adev->handle, VPCCMD_W_FAN, state);
396 if (ret < 0)
397 return -EIO;
398 return count;
399}
400
401static DEVICE_ATTR(fan_mode, 0644, show_ideapad_fan, store_ideapad_fan);
402
403static ssize_t touchpad_show(struct device *dev,
404 struct device_attribute *attr,
405 char *buf)
406{
407 struct ideapad_private *priv = dev_get_drvdata(dev);
408 unsigned long result;
409
410 if (read_ec_data(priv->adev->handle, VPCCMD_R_TOUCHPAD, &result))
411 return sprintf(buf, "-1\n");
412 return sprintf(buf, "%lu\n", result);
413}
414
415
416static ssize_t __maybe_unused touchpad_store(struct device *dev,
417 struct device_attribute *attr,
418 const char *buf, size_t count)
419{
420 struct ideapad_private *priv = dev_get_drvdata(dev);
421 bool state;
422 int ret;
423
424 ret = kstrtobool(buf, &state);
425 if (ret)
426 return ret;
427
428 ret = write_ec_cmd(priv->adev->handle, VPCCMD_W_TOUCHPAD, state);
429 if (ret < 0)
430 return -EIO;
431 return count;
432}
433
434static DEVICE_ATTR_RO(touchpad);
435
436static ssize_t conservation_mode_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 (method_gbmd(priv->adev->handle, &result))
444 return sprintf(buf, "-1\n");
445 return sprintf(buf, "%u\n", test_bit(BM_CONSERVATION_BIT, &result));
446}
447
448static ssize_t conservation_mode_store(struct device *dev,
449 struct device_attribute *attr,
450 const char *buf, size_t count)
451{
452 struct ideapad_private *priv = dev_get_drvdata(dev);
453 bool state;
454 int ret;
455
456 ret = kstrtobool(buf, &state);
457 if (ret)
458 return ret;
459
460 ret = method_int1(priv->adev->handle, "SBMC", state ?
461 BMCMD_CONSERVATION_ON :
462 BMCMD_CONSERVATION_OFF);
463 if (ret < 0)
464 return -EIO;
465 return count;
466}
467
468static DEVICE_ATTR_RW(conservation_mode);
469
470static ssize_t fn_lock_show(struct device *dev,
471 struct device_attribute *attr,
472 char *buf)
473{
474 struct ideapad_private *priv = dev_get_drvdata(dev);
475 unsigned long result;
476 int hals;
477 int fail = read_method_int(priv->adev->handle, "HALS", &hals);
478
479 if (fail)
480 return sprintf(buf, "-1\n");
481
482 result = hals;
483 return sprintf(buf, "%u\n", test_bit(HA_FNLOCK_BIT, &result));
484}
485
486static ssize_t fn_lock_store(struct device *dev,
487 struct device_attribute *attr,
488 const char *buf, size_t count)
489{
490 struct ideapad_private *priv = dev_get_drvdata(dev);
491 bool state;
492 int ret;
493
494 ret = kstrtobool(buf, &state);
495 if (ret)
496 return ret;
497
498 ret = method_int1(priv->adev->handle, "SALS", state ?
499 HACMD_FNLOCK_ON :
500 HACMD_FNLOCK_OFF);
501 if (ret < 0)
502 return -EIO;
503 return count;
504}
505
506static DEVICE_ATTR_RW(fn_lock);
507
508
509static struct attribute *ideapad_attributes[] = {
510 &dev_attr_camera_power.attr,
511 &dev_attr_fan_mode.attr,
512 &dev_attr_touchpad.attr,
513 &dev_attr_conservation_mode.attr,
514 &dev_attr_fn_lock.attr,
515 NULL
516};
517
518static umode_t ideapad_is_visible(struct kobject *kobj,
519 struct attribute *attr,
520 int idx)
521{
522 struct device *dev = container_of(kobj, struct device, kobj);
523 struct ideapad_private *priv = dev_get_drvdata(dev);
524 bool supported;
525
526 if (attr == &dev_attr_camera_power.attr)
527 supported = test_bit(CFG_CAMERA_BIT, &(priv->cfg));
528 else if (attr == &dev_attr_fan_mode.attr) {
529 unsigned long value;
530 supported = !read_ec_data(priv->adev->handle, VPCCMD_R_FAN,
531 &value);
532 } else if (attr == &dev_attr_conservation_mode.attr) {
533 supported = acpi_has_method(priv->adev->handle, "GBMD") &&
534 acpi_has_method(priv->adev->handle, "SBMC");
535 } else if (attr == &dev_attr_fn_lock.attr) {
536 supported = acpi_has_method(priv->adev->handle, "HALS") &&
537 acpi_has_method(priv->adev->handle, "SALS");
538 } else
539 supported = true;
540
541 return supported ? attr->mode : 0;
542}
543
544static const struct attribute_group ideapad_attribute_group = {
545 .is_visible = ideapad_is_visible,
546 .attrs = ideapad_attributes
547};
548
549
550
551
552struct ideapad_rfk_data {
553 char *name;
554 int cfgbit;
555 int opcode;
556 int type;
557};
558
559static const struct ideapad_rfk_data ideapad_rfk_data[] = {
560 { "ideapad_wlan", CFG_WIFI_BIT, VPCCMD_W_WIFI, RFKILL_TYPE_WLAN },
561 { "ideapad_bluetooth", CFG_BT_BIT, VPCCMD_W_BT, RFKILL_TYPE_BLUETOOTH },
562 { "ideapad_3g", CFG_3G_BIT, VPCCMD_W_3G, RFKILL_TYPE_WWAN },
563};
564
565static int ideapad_rfk_set(void *data, bool blocked)
566{
567 struct ideapad_rfk_priv *priv = data;
568 int opcode = ideapad_rfk_data[priv->dev].opcode;
569
570 return write_ec_cmd(priv->priv->adev->handle, opcode, !blocked);
571}
572
573static const struct rfkill_ops ideapad_rfk_ops = {
574 .set_block = ideapad_rfk_set,
575};
576
577static void ideapad_sync_rfk_state(struct ideapad_private *priv)
578{
579 unsigned long hw_blocked = 0;
580 int i;
581
582 if (priv->has_hw_rfkill_switch) {
583 if (read_ec_data(priv->adev->handle, VPCCMD_R_RF, &hw_blocked))
584 return;
585 hw_blocked = !hw_blocked;
586 }
587
588 for (i = 0; i < IDEAPAD_RFKILL_DEV_NUM; i++)
589 if (priv->rfk[i])
590 rfkill_set_hw_state(priv->rfk[i], hw_blocked);
591}
592
593static int ideapad_register_rfkill(struct ideapad_private *priv, int dev)
594{
595 int ret;
596 unsigned long sw_blocked;
597
598 if (no_bt_rfkill &&
599 (ideapad_rfk_data[dev].type == RFKILL_TYPE_BLUETOOTH)) {
600
601 write_ec_cmd(priv->adev->handle,
602 ideapad_rfk_data[dev].opcode, 1);
603 return 0;
604 }
605 priv->rfk_priv[dev].dev = dev;
606 priv->rfk_priv[dev].priv = priv;
607
608 priv->rfk[dev] = rfkill_alloc(ideapad_rfk_data[dev].name,
609 &priv->platform_device->dev,
610 ideapad_rfk_data[dev].type,
611 &ideapad_rfk_ops,
612 &priv->rfk_priv[dev]);
613 if (!priv->rfk[dev])
614 return -ENOMEM;
615
616 if (read_ec_data(priv->adev->handle, ideapad_rfk_data[dev].opcode-1,
617 &sw_blocked)) {
618 rfkill_init_sw_state(priv->rfk[dev], 0);
619 } else {
620 sw_blocked = !sw_blocked;
621 rfkill_init_sw_state(priv->rfk[dev], sw_blocked);
622 }
623
624 ret = rfkill_register(priv->rfk[dev]);
625 if (ret) {
626 rfkill_destroy(priv->rfk[dev]);
627 return ret;
628 }
629 return 0;
630}
631
632static void ideapad_unregister_rfkill(struct ideapad_private *priv, int dev)
633{
634 if (!priv->rfk[dev])
635 return;
636
637 rfkill_unregister(priv->rfk[dev]);
638 rfkill_destroy(priv->rfk[dev]);
639}
640
641
642
643
644static int ideapad_sysfs_init(struct ideapad_private *priv)
645{
646 return sysfs_create_group(&priv->platform_device->dev.kobj,
647 &ideapad_attribute_group);
648}
649
650static void ideapad_sysfs_exit(struct ideapad_private *priv)
651{
652 sysfs_remove_group(&priv->platform_device->dev.kobj,
653 &ideapad_attribute_group);
654}
655
656
657
658
659static const struct key_entry ideapad_keymap[] = {
660 { KE_KEY, 6, { KEY_SWITCHVIDEOMODE } },
661 { KE_KEY, 7, { KEY_CAMERA } },
662 { KE_KEY, 8, { KEY_MICMUTE } },
663 { KE_KEY, 11, { KEY_F16 } },
664 { KE_KEY, 13, { KEY_WLAN } },
665 { KE_KEY, 16, { KEY_PROG1 } },
666 { KE_KEY, 17, { KEY_PROG2 } },
667 { KE_KEY, 64, { KEY_PROG3 } },
668 { KE_KEY, 65, { KEY_PROG4 } },
669 { KE_KEY, 66, { KEY_TOUCHPAD_OFF } },
670 { KE_KEY, 67, { KEY_TOUCHPAD_ON } },
671 { KE_KEY, 128, { KEY_ESC } },
672
673 { KE_END, 0 },
674};
675
676static int ideapad_input_init(struct ideapad_private *priv)
677{
678 struct input_dev *inputdev;
679 int error;
680
681 inputdev = input_allocate_device();
682 if (!inputdev)
683 return -ENOMEM;
684
685 inputdev->name = "Ideapad extra buttons";
686 inputdev->phys = "ideapad/input0";
687 inputdev->id.bustype = BUS_HOST;
688 inputdev->dev.parent = &priv->platform_device->dev;
689
690 error = sparse_keymap_setup(inputdev, ideapad_keymap, NULL);
691 if (error) {
692 pr_err("Unable to setup input device keymap\n");
693 goto err_free_dev;
694 }
695
696 error = input_register_device(inputdev);
697 if (error) {
698 pr_err("Unable to register input device\n");
699 goto err_free_dev;
700 }
701
702 priv->inputdev = inputdev;
703 return 0;
704
705err_free_dev:
706 input_free_device(inputdev);
707 return error;
708}
709
710static void ideapad_input_exit(struct ideapad_private *priv)
711{
712 input_unregister_device(priv->inputdev);
713 priv->inputdev = NULL;
714}
715
716static void ideapad_input_report(struct ideapad_private *priv,
717 unsigned long scancode)
718{
719 sparse_keymap_report_event(priv->inputdev, scancode, 1, true);
720}
721
722static void ideapad_input_novokey(struct ideapad_private *priv)
723{
724 unsigned long long_pressed;
725
726 if (read_ec_data(priv->adev->handle, VPCCMD_R_NOVO, &long_pressed))
727 return;
728 if (long_pressed)
729 ideapad_input_report(priv, 17);
730 else
731 ideapad_input_report(priv, 16);
732}
733
734static void ideapad_check_special_buttons(struct ideapad_private *priv)
735{
736 unsigned long bit, value;
737
738 read_ec_data(priv->adev->handle, VPCCMD_R_SPECIAL_BUTTONS, &value);
739
740 for (bit = 0; bit < 16; bit++) {
741 if (test_bit(bit, &value)) {
742 switch (bit) {
743 case 0:
744 case 6:
745
746 ideapad_input_report(priv, 65);
747 break;
748 case 1:
749
750 ideapad_input_report(priv, 64);
751 break;
752 default:
753 pr_info("Unknown special button: %lu\n", bit);
754 break;
755 }
756 }
757 }
758}
759
760
761
762
763static int ideapad_backlight_get_brightness(struct backlight_device *blightdev)
764{
765 struct ideapad_private *priv = bl_get_data(blightdev);
766 unsigned long now;
767
768 if (!priv)
769 return -EINVAL;
770
771 if (read_ec_data(priv->adev->handle, VPCCMD_R_BL, &now))
772 return -EIO;
773 return now;
774}
775
776static int ideapad_backlight_update_status(struct backlight_device *blightdev)
777{
778 struct ideapad_private *priv = bl_get_data(blightdev);
779
780 if (!priv)
781 return -EINVAL;
782
783 if (write_ec_cmd(priv->adev->handle, VPCCMD_W_BL,
784 blightdev->props.brightness))
785 return -EIO;
786 if (write_ec_cmd(priv->adev->handle, VPCCMD_W_BL_POWER,
787 blightdev->props.power == FB_BLANK_POWERDOWN ? 0 : 1))
788 return -EIO;
789
790 return 0;
791}
792
793static const struct backlight_ops ideapad_backlight_ops = {
794 .get_brightness = ideapad_backlight_get_brightness,
795 .update_status = ideapad_backlight_update_status,
796};
797
798static int ideapad_backlight_init(struct ideapad_private *priv)
799{
800 struct backlight_device *blightdev;
801 struct backlight_properties props;
802 unsigned long max, now, power;
803
804 if (read_ec_data(priv->adev->handle, VPCCMD_R_BL_MAX, &max))
805 return -EIO;
806 if (read_ec_data(priv->adev->handle, VPCCMD_R_BL, &now))
807 return -EIO;
808 if (read_ec_data(priv->adev->handle, VPCCMD_R_BL_POWER, &power))
809 return -EIO;
810
811 memset(&props, 0, sizeof(struct backlight_properties));
812 props.max_brightness = max;
813 props.type = BACKLIGHT_PLATFORM;
814 blightdev = backlight_device_register("ideapad",
815 &priv->platform_device->dev,
816 priv,
817 &ideapad_backlight_ops,
818 &props);
819 if (IS_ERR(blightdev)) {
820 pr_err("Could not register backlight device\n");
821 return PTR_ERR(blightdev);
822 }
823
824 priv->blightdev = blightdev;
825 blightdev->props.brightness = now;
826 blightdev->props.power = power ? FB_BLANK_UNBLANK : FB_BLANK_POWERDOWN;
827 backlight_update_status(blightdev);
828
829 return 0;
830}
831
832static void ideapad_backlight_exit(struct ideapad_private *priv)
833{
834 backlight_device_unregister(priv->blightdev);
835 priv->blightdev = NULL;
836}
837
838static void ideapad_backlight_notify_power(struct ideapad_private *priv)
839{
840 unsigned long power;
841 struct backlight_device *blightdev = priv->blightdev;
842
843 if (!blightdev)
844 return;
845 if (read_ec_data(priv->adev->handle, VPCCMD_R_BL_POWER, &power))
846 return;
847 blightdev->props.power = power ? FB_BLANK_UNBLANK : FB_BLANK_POWERDOWN;
848}
849
850static void ideapad_backlight_notify_brightness(struct ideapad_private *priv)
851{
852 unsigned long now;
853
854
855 if (priv->blightdev == NULL) {
856 read_ec_data(priv->adev->handle, VPCCMD_R_BL, &now);
857 return;
858 }
859
860 backlight_force_update(priv->blightdev, BACKLIGHT_UPDATE_HOTKEY);
861}
862
863
864
865
866static void ideapad_sync_touchpad_state(struct ideapad_private *priv)
867{
868 unsigned long value;
869
870
871 if (!read_ec_data(priv->adev->handle, VPCCMD_R_TOUCHPAD, &value)) {
872
873
874
875
876 unsigned char param;
877 i8042_command(¶m, value ? I8042_CMD_AUX_ENABLE :
878 I8042_CMD_AUX_DISABLE);
879 ideapad_input_report(priv, value ? 67 : 66);
880 }
881}
882
883static void ideapad_acpi_notify(acpi_handle handle, u32 event, void *data)
884{
885 struct ideapad_private *priv = data;
886 unsigned long vpc1, vpc2, vpc_bit;
887
888 if (read_ec_data(handle, VPCCMD_R_VPC1, &vpc1))
889 return;
890 if (read_ec_data(handle, VPCCMD_R_VPC2, &vpc2))
891 return;
892
893 vpc1 = (vpc2 << 8) | vpc1;
894 for (vpc_bit = 0; vpc_bit < 16; vpc_bit++) {
895 if (test_bit(vpc_bit, &vpc1)) {
896 switch (vpc_bit) {
897 case 9:
898 ideapad_sync_rfk_state(priv);
899 break;
900 case 13:
901 case 11:
902 case 8:
903 case 7:
904 case 6:
905 ideapad_input_report(priv, vpc_bit);
906 break;
907 case 5:
908 ideapad_sync_touchpad_state(priv);
909 break;
910 case 4:
911 ideapad_backlight_notify_brightness(priv);
912 break;
913 case 3:
914 ideapad_input_novokey(priv);
915 break;
916 case 2:
917 ideapad_backlight_notify_power(priv);
918 break;
919 case 0:
920 ideapad_check_special_buttons(priv);
921 break;
922 case 1:
923
924
925
926
927
928 break;
929 default:
930 pr_info("Unknown event: %lu\n", vpc_bit);
931 }
932 }
933 }
934}
935
936#if IS_ENABLED(CONFIG_ACPI_WMI)
937static void ideapad_wmi_notify(u32 value, void *context)
938{
939 switch (value) {
940 case 128:
941 ideapad_input_report(context, value);
942 break;
943 default:
944 pr_info("Unknown WMI event %u\n", value);
945 }
946}
947#endif
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964static const struct dmi_system_id hw_rfkill_list[] = {
965 {}
966};
967
968static int ideapad_acpi_add(struct platform_device *pdev)
969{
970 int ret, i;
971 int cfg;
972 struct ideapad_private *priv;
973 struct acpi_device *adev;
974
975 ret = acpi_bus_get_device(ACPI_HANDLE(&pdev->dev), &adev);
976 if (ret)
977 return -ENODEV;
978
979 if (read_method_int(adev->handle, "_CFG", &cfg))
980 return -ENODEV;
981
982 priv = devm_kzalloc(&pdev->dev, sizeof(*priv), GFP_KERNEL);
983 if (!priv)
984 return -ENOMEM;
985
986 dev_set_drvdata(&pdev->dev, priv);
987 priv->cfg = cfg;
988 priv->adev = adev;
989 priv->platform_device = pdev;
990 priv->has_hw_rfkill_switch = dmi_check_system(hw_rfkill_list);
991
992 ret = ideapad_sysfs_init(priv);
993 if (ret)
994 return ret;
995
996 ideapad_debugfs_init(priv);
997
998 ret = ideapad_input_init(priv);
999 if (ret)
1000 goto input_failed;
1001
1002
1003
1004
1005
1006 if (!priv->has_hw_rfkill_switch)
1007 write_ec_cmd(priv->adev->handle, VPCCMD_W_RF, 1);
1008
1009 for (i = 0; i < IDEAPAD_RFKILL_DEV_NUM; i++)
1010 if (test_bit(ideapad_rfk_data[i].cfgbit, &priv->cfg))
1011 ideapad_register_rfkill(priv, i);
1012
1013 ideapad_sync_rfk_state(priv);
1014 ideapad_sync_touchpad_state(priv);
1015
1016 if (acpi_video_get_backlight_type() == acpi_backlight_vendor) {
1017 ret = ideapad_backlight_init(priv);
1018 if (ret && ret != -ENODEV)
1019 goto backlight_failed;
1020 }
1021 ret = acpi_install_notify_handler(adev->handle,
1022 ACPI_DEVICE_NOTIFY, ideapad_acpi_notify, priv);
1023 if (ret)
1024 goto notification_failed;
1025
1026#if IS_ENABLED(CONFIG_ACPI_WMI)
1027 for (i = 0; i < ARRAY_SIZE(ideapad_wmi_fnesc_events); i++) {
1028 ret = wmi_install_notify_handler(ideapad_wmi_fnesc_events[i],
1029 ideapad_wmi_notify, priv);
1030 if (ret == AE_OK) {
1031 priv->fnesc_guid = ideapad_wmi_fnesc_events[i];
1032 break;
1033 }
1034 }
1035 if (ret != AE_OK && ret != AE_NOT_EXIST)
1036 goto notification_failed_wmi;
1037#endif
1038
1039 return 0;
1040#if IS_ENABLED(CONFIG_ACPI_WMI)
1041notification_failed_wmi:
1042 acpi_remove_notify_handler(priv->adev->handle,
1043 ACPI_DEVICE_NOTIFY, ideapad_acpi_notify);
1044#endif
1045notification_failed:
1046 ideapad_backlight_exit(priv);
1047backlight_failed:
1048 for (i = 0; i < IDEAPAD_RFKILL_DEV_NUM; i++)
1049 ideapad_unregister_rfkill(priv, i);
1050 ideapad_input_exit(priv);
1051input_failed:
1052 ideapad_debugfs_exit(priv);
1053 ideapad_sysfs_exit(priv);
1054 return ret;
1055}
1056
1057static int ideapad_acpi_remove(struct platform_device *pdev)
1058{
1059 struct ideapad_private *priv = dev_get_drvdata(&pdev->dev);
1060 int i;
1061
1062#if IS_ENABLED(CONFIG_ACPI_WMI)
1063 if (priv->fnesc_guid)
1064 wmi_remove_notify_handler(priv->fnesc_guid);
1065#endif
1066 acpi_remove_notify_handler(priv->adev->handle,
1067 ACPI_DEVICE_NOTIFY, ideapad_acpi_notify);
1068 ideapad_backlight_exit(priv);
1069 for (i = 0; i < IDEAPAD_RFKILL_DEV_NUM; i++)
1070 ideapad_unregister_rfkill(priv, i);
1071 ideapad_input_exit(priv);
1072 ideapad_debugfs_exit(priv);
1073 ideapad_sysfs_exit(priv);
1074 dev_set_drvdata(&pdev->dev, NULL);
1075
1076 return 0;
1077}
1078
1079#ifdef CONFIG_PM_SLEEP
1080static int ideapad_acpi_resume(struct device *device)
1081{
1082 struct ideapad_private *priv;
1083
1084 if (!device)
1085 return -EINVAL;
1086 priv = dev_get_drvdata(device);
1087
1088 ideapad_sync_rfk_state(priv);
1089 ideapad_sync_touchpad_state(priv);
1090 return 0;
1091}
1092#endif
1093static SIMPLE_DEV_PM_OPS(ideapad_pm, NULL, ideapad_acpi_resume);
1094
1095static const struct acpi_device_id ideapad_device_ids[] = {
1096 { "VPC2004", 0},
1097 { "", 0},
1098};
1099MODULE_DEVICE_TABLE(acpi, ideapad_device_ids);
1100
1101static struct platform_driver ideapad_acpi_driver = {
1102 .probe = ideapad_acpi_add,
1103 .remove = ideapad_acpi_remove,
1104 .driver = {
1105 .name = "ideapad_acpi",
1106 .pm = &ideapad_pm,
1107 .acpi_match_table = ACPI_PTR(ideapad_device_ids),
1108 },
1109};
1110
1111module_platform_driver(ideapad_acpi_driver);
1112
1113MODULE_AUTHOR("David Woodhouse <dwmw2@infradead.org>");
1114MODULE_DESCRIPTION("IdeaPad ACPI Extras");
1115MODULE_LICENSE("GPL");
1116
