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