2 * ideapad-laptop.c - Lenovo IdeaPad ACPI Extras
4 * Copyright © 2010 Intel Corporation
5 * Copyright © 2010 David Woodhouse <dwmw2@infradead.org>
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.
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.
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
23 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
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>
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>
43 #define IDEAPAD_RFKILL_DEV_NUM (3)
45 #define CFG_BT_BIT (16)
46 #define CFG_3G_BIT (17)
47 #define CFG_WIFI_BIT (18)
48 #define CFG_CAMERA_BIT (19)
50 #if IS_ENABLED(CONFIG_ACPI_WMI)
51 static const char *const ideapad_wmi_fnesc_events[] = {
52 "26CAB2E5-5CF1-46AE-AAC3-4A12B6BA50E6", /* Yoga 3 */
53 "56322276-8493-4CE8-A783-98C991274F5E", /* Yoga 700 */
75 VPCCMD_R_ODD, /* 0x21 */
80 VPCCMD_R_SPECIAL_BUTTONS = 0x31,
81 VPCCMD_W_BL_POWER = 0x33,
84 struct ideapad_rfk_priv {
86 struct ideapad_private *priv;
89 struct ideapad_private {
90 struct acpi_device *adev;
91 struct rfkill *rfk[IDEAPAD_RFKILL_DEV_NUM];
92 struct ideapad_rfk_priv rfk_priv[IDEAPAD_RFKILL_DEV_NUM];
93 struct platform_device *platform_device;
94 struct input_dev *inputdev;
95 struct backlight_device *blightdev;
98 bool has_hw_rfkill_switch;
99 const char *fnesc_guid;
102 static bool no_bt_rfkill;
103 module_param(no_bt_rfkill, bool, 0444);
104 MODULE_PARM_DESC(no_bt_rfkill, "No rfkill for bluetooth.");
109 #define IDEAPAD_EC_TIMEOUT (100) /* in ms */
111 static int read_method_int(acpi_handle handle, const char *method, int *val)
114 unsigned long long result;
116 status = acpi_evaluate_integer(handle, (char *)method, NULL, &result);
117 if (ACPI_FAILURE(status)) {
126 static int method_vpcr(acpi_handle handle, int cmd, int *ret)
129 unsigned long long result;
130 struct acpi_object_list params;
131 union acpi_object in_obj;
134 params.pointer = &in_obj;
135 in_obj.type = ACPI_TYPE_INTEGER;
136 in_obj.integer.value = cmd;
138 status = acpi_evaluate_integer(handle, "VPCR", ¶ms, &result);
140 if (ACPI_FAILURE(status)) {
149 static int method_vpcw(acpi_handle handle, int cmd, int data)
151 struct acpi_object_list params;
152 union acpi_object in_obj[2];
156 params.pointer = in_obj;
157 in_obj[0].type = ACPI_TYPE_INTEGER;
158 in_obj[0].integer.value = cmd;
159 in_obj[1].type = ACPI_TYPE_INTEGER;
160 in_obj[1].integer.value = data;
162 status = acpi_evaluate_object(handle, "VPCW", ¶ms, NULL);
168 static int read_ec_data(acpi_handle handle, int cmd, unsigned long *data)
171 unsigned long int end_jiffies;
173 if (method_vpcw(handle, 1, cmd))
176 for (end_jiffies = jiffies+(HZ)*IDEAPAD_EC_TIMEOUT/1000+1;
177 time_before(jiffies, end_jiffies);) {
179 if (method_vpcr(handle, 1, &val))
182 if (method_vpcr(handle, 0, &val))
188 pr_err("timeout in read_ec_cmd\n");
192 static int write_ec_cmd(acpi_handle handle, int cmd, unsigned long data)
195 unsigned long int end_jiffies;
197 if (method_vpcw(handle, 0, data))
199 if (method_vpcw(handle, 1, cmd))
202 for (end_jiffies = jiffies+(HZ)*IDEAPAD_EC_TIMEOUT/1000+1;
203 time_before(jiffies, end_jiffies);) {
205 if (method_vpcr(handle, 1, &val))
210 pr_err("timeout in write_ec_cmd\n");
217 static int debugfs_status_show(struct seq_file *s, void *data)
219 struct ideapad_private *priv = s->private;
225 if (!read_ec_data(priv->adev->handle, VPCCMD_R_BL_MAX, &value))
226 seq_printf(s, "Backlight max:\t%lu\n", value);
227 if (!read_ec_data(priv->adev->handle, VPCCMD_R_BL, &value))
228 seq_printf(s, "Backlight now:\t%lu\n", value);
229 if (!read_ec_data(priv->adev->handle, VPCCMD_R_BL_POWER, &value))
230 seq_printf(s, "BL power value:\t%s\n", value ? "On" : "Off");
231 seq_printf(s, "=====================\n");
233 if (!read_ec_data(priv->adev->handle, VPCCMD_R_RF, &value))
234 seq_printf(s, "Radio status:\t%s(%lu)\n",
235 value ? "On" : "Off", value);
236 if (!read_ec_data(priv->adev->handle, VPCCMD_R_WIFI, &value))
237 seq_printf(s, "Wifi status:\t%s(%lu)\n",
238 value ? "On" : "Off", value);
239 if (!read_ec_data(priv->adev->handle, VPCCMD_R_BT, &value))
240 seq_printf(s, "BT status:\t%s(%lu)\n",
241 value ? "On" : "Off", value);
242 if (!read_ec_data(priv->adev->handle, VPCCMD_R_3G, &value))
243 seq_printf(s, "3G status:\t%s(%lu)\n",
244 value ? "On" : "Off", value);
245 seq_printf(s, "=====================\n");
247 if (!read_ec_data(priv->adev->handle, VPCCMD_R_TOUCHPAD, &value))
248 seq_printf(s, "Touchpad status:%s(%lu)\n",
249 value ? "On" : "Off", value);
250 if (!read_ec_data(priv->adev->handle, VPCCMD_R_CAMERA, &value))
251 seq_printf(s, "Camera status:\t%s(%lu)\n",
252 value ? "On" : "Off", value);
257 static int debugfs_status_open(struct inode *inode, struct file *file)
259 return single_open(file, debugfs_status_show, inode->i_private);
262 static const struct file_operations debugfs_status_fops = {
263 .owner = THIS_MODULE,
264 .open = debugfs_status_open,
267 .release = single_release,
270 static int debugfs_cfg_show(struct seq_file *s, void *data)
272 struct ideapad_private *priv = s->private;
275 seq_printf(s, "cfg: N/A\n");
277 seq_printf(s, "cfg: 0x%.8lX\n\nCapability: ",
279 if (test_bit(CFG_BT_BIT, &priv->cfg))
280 seq_printf(s, "Bluetooth ");
281 if (test_bit(CFG_3G_BIT, &priv->cfg))
282 seq_printf(s, "3G ");
283 if (test_bit(CFG_WIFI_BIT, &priv->cfg))
284 seq_printf(s, "Wireless ");
285 if (test_bit(CFG_CAMERA_BIT, &priv->cfg))
286 seq_printf(s, "Camera ");
287 seq_printf(s, "\nGraphic: ");
288 switch ((priv->cfg)&0x700) {
290 seq_printf(s, "Intel");
293 seq_printf(s, "ATI");
296 seq_printf(s, "Nvidia");
299 seq_printf(s, "Intel and ATI");
302 seq_printf(s, "Intel and Nvidia");
310 static int debugfs_cfg_open(struct inode *inode, struct file *file)
312 return single_open(file, debugfs_cfg_show, inode->i_private);
315 static const struct file_operations debugfs_cfg_fops = {
316 .owner = THIS_MODULE,
317 .open = debugfs_cfg_open,
320 .release = single_release,
323 static int ideapad_debugfs_init(struct ideapad_private *priv)
327 priv->debug = debugfs_create_dir("ideapad", NULL);
328 if (priv->debug == NULL) {
329 pr_err("failed to create debugfs directory");
333 node = debugfs_create_file("cfg", S_IRUGO, priv->debug, priv,
336 pr_err("failed to create cfg in debugfs");
340 node = debugfs_create_file("status", S_IRUGO, priv->debug, priv,
341 &debugfs_status_fops);
343 pr_err("failed to create status in debugfs");
353 static void ideapad_debugfs_exit(struct ideapad_private *priv)
355 debugfs_remove_recursive(priv->debug);
362 static ssize_t show_ideapad_cam(struct device *dev,
363 struct device_attribute *attr,
366 unsigned long result;
367 struct ideapad_private *priv = dev_get_drvdata(dev);
369 if (read_ec_data(priv->adev->handle, VPCCMD_R_CAMERA, &result))
370 return sprintf(buf, "-1\n");
371 return sprintf(buf, "%lu\n", result);
374 static ssize_t store_ideapad_cam(struct device *dev,
375 struct device_attribute *attr,
376 const char *buf, size_t count)
379 struct ideapad_private *priv = dev_get_drvdata(dev);
383 if (sscanf(buf, "%i", &state) != 1)
385 ret = write_ec_cmd(priv->adev->handle, VPCCMD_W_CAMERA, state);
391 static DEVICE_ATTR(camera_power, 0644, show_ideapad_cam, store_ideapad_cam);
393 static ssize_t show_ideapad_fan(struct device *dev,
394 struct device_attribute *attr,
397 unsigned long result;
398 struct ideapad_private *priv = dev_get_drvdata(dev);
400 if (read_ec_data(priv->adev->handle, VPCCMD_R_FAN, &result))
401 return sprintf(buf, "-1\n");
402 return sprintf(buf, "%lu\n", result);
405 static ssize_t store_ideapad_fan(struct device *dev,
406 struct device_attribute *attr,
407 const char *buf, size_t count)
410 struct ideapad_private *priv = dev_get_drvdata(dev);
414 if (sscanf(buf, "%i", &state) != 1)
416 if (state < 0 || state > 4 || state == 3)
418 ret = write_ec_cmd(priv->adev->handle, VPCCMD_W_FAN, state);
424 static DEVICE_ATTR(fan_mode, 0644, show_ideapad_fan, store_ideapad_fan);
426 static struct attribute *ideapad_attributes[] = {
427 &dev_attr_camera_power.attr,
428 &dev_attr_fan_mode.attr,
432 static umode_t ideapad_is_visible(struct kobject *kobj,
433 struct attribute *attr,
436 struct device *dev = container_of(kobj, struct device, kobj);
437 struct ideapad_private *priv = dev_get_drvdata(dev);
440 if (attr == &dev_attr_camera_power.attr)
441 supported = test_bit(CFG_CAMERA_BIT, &(priv->cfg));
442 else if (attr == &dev_attr_fan_mode.attr) {
444 supported = !read_ec_data(priv->adev->handle, VPCCMD_R_FAN,
449 return supported ? attr->mode : 0;
452 static const struct attribute_group ideapad_attribute_group = {
453 .is_visible = ideapad_is_visible,
454 .attrs = ideapad_attributes
460 struct ideapad_rfk_data {
467 static const struct ideapad_rfk_data ideapad_rfk_data[] = {
468 { "ideapad_wlan", CFG_WIFI_BIT, VPCCMD_W_WIFI, RFKILL_TYPE_WLAN },
469 { "ideapad_bluetooth", CFG_BT_BIT, VPCCMD_W_BT, RFKILL_TYPE_BLUETOOTH },
470 { "ideapad_3g", CFG_3G_BIT, VPCCMD_W_3G, RFKILL_TYPE_WWAN },
473 static int ideapad_rfk_set(void *data, bool blocked)
475 struct ideapad_rfk_priv *priv = data;
476 int opcode = ideapad_rfk_data[priv->dev].opcode;
478 return write_ec_cmd(priv->priv->adev->handle, opcode, !blocked);
481 static struct rfkill_ops ideapad_rfk_ops = {
482 .set_block = ideapad_rfk_set,
485 static void ideapad_sync_rfk_state(struct ideapad_private *priv)
487 unsigned long hw_blocked = 0;
490 if (priv->has_hw_rfkill_switch) {
491 if (read_ec_data(priv->adev->handle, VPCCMD_R_RF, &hw_blocked))
493 hw_blocked = !hw_blocked;
496 for (i = 0; i < IDEAPAD_RFKILL_DEV_NUM; i++)
498 rfkill_set_hw_state(priv->rfk[i], hw_blocked);
501 static int ideapad_register_rfkill(struct ideapad_private *priv, int dev)
504 unsigned long sw_blocked;
507 (ideapad_rfk_data[dev].type == RFKILL_TYPE_BLUETOOTH)) {
508 /* Force to enable bluetooth when no_bt_rfkill=1 */
509 write_ec_cmd(priv->adev->handle,
510 ideapad_rfk_data[dev].opcode, 1);
513 priv->rfk_priv[dev].dev = dev;
514 priv->rfk_priv[dev].priv = priv;
516 priv->rfk[dev] = rfkill_alloc(ideapad_rfk_data[dev].name,
517 &priv->platform_device->dev,
518 ideapad_rfk_data[dev].type,
520 &priv->rfk_priv[dev]);
524 if (read_ec_data(priv->adev->handle, ideapad_rfk_data[dev].opcode-1,
526 rfkill_init_sw_state(priv->rfk[dev], 0);
528 sw_blocked = !sw_blocked;
529 rfkill_init_sw_state(priv->rfk[dev], sw_blocked);
532 ret = rfkill_register(priv->rfk[dev]);
534 rfkill_destroy(priv->rfk[dev]);
540 static void ideapad_unregister_rfkill(struct ideapad_private *priv, int dev)
545 rfkill_unregister(priv->rfk[dev]);
546 rfkill_destroy(priv->rfk[dev]);
552 static int ideapad_sysfs_init(struct ideapad_private *priv)
554 return sysfs_create_group(&priv->platform_device->dev.kobj,
555 &ideapad_attribute_group);
558 static void ideapad_sysfs_exit(struct ideapad_private *priv)
560 sysfs_remove_group(&priv->platform_device->dev.kobj,
561 &ideapad_attribute_group);
567 static const struct key_entry ideapad_keymap[] = {
568 { KE_KEY, 6, { KEY_SWITCHVIDEOMODE } },
569 { KE_KEY, 7, { KEY_CAMERA } },
570 { KE_KEY, 11, { KEY_F16 } },
571 { KE_KEY, 13, { KEY_WLAN } },
572 { KE_KEY, 16, { KEY_PROG1 } },
573 { KE_KEY, 17, { KEY_PROG2 } },
574 { KE_KEY, 64, { KEY_PROG3 } },
575 { KE_KEY, 65, { KEY_PROG4 } },
576 { KE_KEY, 66, { KEY_TOUCHPAD_OFF } },
577 { KE_KEY, 67, { KEY_TOUCHPAD_ON } },
578 { KE_KEY, 128, { KEY_ESC } },
583 static int ideapad_input_init(struct ideapad_private *priv)
585 struct input_dev *inputdev;
588 inputdev = input_allocate_device();
592 inputdev->name = "Ideapad extra buttons";
593 inputdev->phys = "ideapad/input0";
594 inputdev->id.bustype = BUS_HOST;
595 inputdev->dev.parent = &priv->platform_device->dev;
597 error = sparse_keymap_setup(inputdev, ideapad_keymap, NULL);
599 pr_err("Unable to setup input device keymap\n");
603 error = input_register_device(inputdev);
605 pr_err("Unable to register input device\n");
606 goto err_free_keymap;
609 priv->inputdev = inputdev;
613 sparse_keymap_free(inputdev);
615 input_free_device(inputdev);
619 static void ideapad_input_exit(struct ideapad_private *priv)
621 sparse_keymap_free(priv->inputdev);
622 input_unregister_device(priv->inputdev);
623 priv->inputdev = NULL;
626 static void ideapad_input_report(struct ideapad_private *priv,
627 unsigned long scancode)
629 sparse_keymap_report_event(priv->inputdev, scancode, 1, true);
632 static void ideapad_input_novokey(struct ideapad_private *priv)
634 unsigned long long_pressed;
636 if (read_ec_data(priv->adev->handle, VPCCMD_R_NOVO, &long_pressed))
639 ideapad_input_report(priv, 17);
641 ideapad_input_report(priv, 16);
644 static void ideapad_check_special_buttons(struct ideapad_private *priv)
646 unsigned long bit, value;
648 read_ec_data(priv->adev->handle, VPCCMD_R_SPECIAL_BUTTONS, &value);
650 for (bit = 0; bit < 16; bit++) {
651 if (test_bit(bit, &value)) {
655 /* Thermal Management button */
656 ideapad_input_report(priv, 65);
659 /* OneKey Theater button */
660 ideapad_input_report(priv, 64);
663 pr_info("Unknown special button: %lu\n", bit);
673 static int ideapad_backlight_get_brightness(struct backlight_device *blightdev)
675 struct ideapad_private *priv = bl_get_data(blightdev);
681 if (read_ec_data(priv->adev->handle, VPCCMD_R_BL, &now))
686 static int ideapad_backlight_update_status(struct backlight_device *blightdev)
688 struct ideapad_private *priv = bl_get_data(blightdev);
693 if (write_ec_cmd(priv->adev->handle, VPCCMD_W_BL,
694 blightdev->props.brightness))
696 if (write_ec_cmd(priv->adev->handle, VPCCMD_W_BL_POWER,
697 blightdev->props.power == FB_BLANK_POWERDOWN ? 0 : 1))
703 static const struct backlight_ops ideapad_backlight_ops = {
704 .get_brightness = ideapad_backlight_get_brightness,
705 .update_status = ideapad_backlight_update_status,
708 static int ideapad_backlight_init(struct ideapad_private *priv)
710 struct backlight_device *blightdev;
711 struct backlight_properties props;
712 unsigned long max, now, power;
714 if (read_ec_data(priv->adev->handle, VPCCMD_R_BL_MAX, &max))
716 if (read_ec_data(priv->adev->handle, VPCCMD_R_BL, &now))
718 if (read_ec_data(priv->adev->handle, VPCCMD_R_BL_POWER, &power))
721 memset(&props, 0, sizeof(struct backlight_properties));
722 props.max_brightness = max;
723 props.type = BACKLIGHT_PLATFORM;
724 blightdev = backlight_device_register("ideapad",
725 &priv->platform_device->dev,
727 &ideapad_backlight_ops,
729 if (IS_ERR(blightdev)) {
730 pr_err("Could not register backlight device\n");
731 return PTR_ERR(blightdev);
734 priv->blightdev = blightdev;
735 blightdev->props.brightness = now;
736 blightdev->props.power = power ? FB_BLANK_UNBLANK : FB_BLANK_POWERDOWN;
737 backlight_update_status(blightdev);
742 static void ideapad_backlight_exit(struct ideapad_private *priv)
744 backlight_device_unregister(priv->blightdev);
745 priv->blightdev = NULL;
748 static void ideapad_backlight_notify_power(struct ideapad_private *priv)
751 struct backlight_device *blightdev = priv->blightdev;
755 if (read_ec_data(priv->adev->handle, VPCCMD_R_BL_POWER, &power))
757 blightdev->props.power = power ? FB_BLANK_UNBLANK : FB_BLANK_POWERDOWN;
760 static void ideapad_backlight_notify_brightness(struct ideapad_private *priv)
764 /* if we control brightness via acpi video driver */
765 if (priv->blightdev == NULL) {
766 read_ec_data(priv->adev->handle, VPCCMD_R_BL, &now);
770 backlight_force_update(priv->blightdev, BACKLIGHT_UPDATE_HOTKEY);
776 static void ideapad_sync_touchpad_state(struct ideapad_private *priv)
780 /* Without reading from EC touchpad LED doesn't switch state */
781 if (!read_ec_data(priv->adev->handle, VPCCMD_R_TOUCHPAD, &value)) {
782 /* Some IdeaPads don't really turn off touchpad - they only
783 * switch the LED state. We (de)activate KBC AUX port to turn
784 * touchpad off and on. We send KEY_TOUCHPAD_OFF and
785 * KEY_TOUCHPAD_ON to not to get out of sync with LED */
787 i8042_command(¶m, value ? I8042_CMD_AUX_ENABLE :
788 I8042_CMD_AUX_DISABLE);
789 ideapad_input_report(priv, value ? 67 : 66);
793 static void ideapad_acpi_notify(acpi_handle handle, u32 event, void *data)
795 struct ideapad_private *priv = data;
796 unsigned long vpc1, vpc2, vpc_bit;
798 if (read_ec_data(handle, VPCCMD_R_VPC1, &vpc1))
800 if (read_ec_data(handle, VPCCMD_R_VPC2, &vpc2))
803 vpc1 = (vpc2 << 8) | vpc1;
804 for (vpc_bit = 0; vpc_bit < 16; vpc_bit++) {
805 if (test_bit(vpc_bit, &vpc1)) {
808 ideapad_sync_rfk_state(priv);
814 ideapad_input_report(priv, vpc_bit);
817 ideapad_sync_touchpad_state(priv);
820 ideapad_backlight_notify_brightness(priv);
823 ideapad_input_novokey(priv);
826 ideapad_backlight_notify_power(priv);
829 ideapad_check_special_buttons(priv);
832 pr_info("Unknown event: %lu\n", vpc_bit);
838 #if IS_ENABLED(CONFIG_ACPI_WMI)
839 static void ideapad_wmi_notify(u32 value, void *context)
843 ideapad_input_report(context, value);
846 pr_info("Unknown WMI event %u\n", value);
852 * Some ideapads don't have a hardware rfkill switch, reading VPCCMD_R_RF
853 * always results in 0 on these models, causing ideapad_laptop to wrongly
854 * report all radios as hardware-blocked.
856 static const struct dmi_system_id no_hw_rfkill_list[] = {
858 .ident = "Lenovo G40-30",
860 DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
861 DMI_MATCH(DMI_PRODUCT_VERSION, "Lenovo G40-30"),
865 .ident = "Lenovo G50-30",
867 DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
868 DMI_MATCH(DMI_PRODUCT_VERSION, "Lenovo G50-30"),
872 .ident = "Lenovo ideapad Y700-15ISK",
874 DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
875 DMI_MATCH(DMI_PRODUCT_VERSION, "Lenovo ideapad Y700-15ISK"),
879 .ident = "Lenovo ideapad Y700 Touch-15ISK",
881 DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
882 DMI_MATCH(DMI_PRODUCT_VERSION, "Lenovo ideapad Y700 Touch-15ISK"),
886 .ident = "Lenovo ideapad Y700-17ISK",
888 DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
889 DMI_MATCH(DMI_PRODUCT_VERSION, "Lenovo ideapad Y700-17ISK"),
893 .ident = "Lenovo Yoga 2 11 / 13 / Pro",
895 DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
896 DMI_MATCH(DMI_PRODUCT_VERSION, "Lenovo Yoga 2"),
900 .ident = "Lenovo Yoga 2 11 / 13 / Pro",
902 DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
903 DMI_MATCH(DMI_BOARD_NAME, "Yoga2"),
907 .ident = "Lenovo Yoga 3 1170 / 1470",
909 DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
910 DMI_MATCH(DMI_PRODUCT_VERSION, "Lenovo Yoga 3"),
914 .ident = "Lenovo Yoga 3 Pro 1370",
916 DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
917 DMI_MATCH(DMI_PRODUCT_VERSION, "Lenovo YOGA 3"),
921 .ident = "Lenovo Yoga 700",
923 DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
924 DMI_MATCH(DMI_PRODUCT_VERSION, "Lenovo YOGA 700"),
928 .ident = "Lenovo Yoga 900",
930 DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
931 DMI_MATCH(DMI_PRODUCT_VERSION, "Lenovo YOGA 900"),
937 static int ideapad_acpi_add(struct platform_device *pdev)
941 struct ideapad_private *priv;
942 struct acpi_device *adev;
944 ret = acpi_bus_get_device(ACPI_HANDLE(&pdev->dev), &adev);
948 if (read_method_int(adev->handle, "_CFG", &cfg))
951 priv = devm_kzalloc(&pdev->dev, sizeof(*priv), GFP_KERNEL);
955 dev_set_drvdata(&pdev->dev, priv);
958 priv->platform_device = pdev;
959 priv->has_hw_rfkill_switch = !dmi_check_system(no_hw_rfkill_list);
961 ret = ideapad_sysfs_init(priv);
965 ret = ideapad_debugfs_init(priv);
969 ret = ideapad_input_init(priv);
974 * On some models without a hw-switch (the yoga 2 13 at least)
975 * VPCCMD_W_RF must be explicitly set to 1 for the wifi to work.
977 if (!priv->has_hw_rfkill_switch)
978 write_ec_cmd(priv->adev->handle, VPCCMD_W_RF, 1);
980 for (i = 0; i < IDEAPAD_RFKILL_DEV_NUM; i++)
981 if (test_bit(ideapad_rfk_data[i].cfgbit, &priv->cfg))
982 ideapad_register_rfkill(priv, i);
984 ideapad_sync_rfk_state(priv);
985 ideapad_sync_touchpad_state(priv);
987 if (acpi_video_get_backlight_type() == acpi_backlight_vendor) {
988 ret = ideapad_backlight_init(priv);
989 if (ret && ret != -ENODEV)
990 goto backlight_failed;
992 ret = acpi_install_notify_handler(adev->handle,
993 ACPI_DEVICE_NOTIFY, ideapad_acpi_notify, priv);
995 goto notification_failed;
997 #if IS_ENABLED(CONFIG_ACPI_WMI)
998 for (i = 0; i < ARRAY_SIZE(ideapad_wmi_fnesc_events); i++) {
999 ret = wmi_install_notify_handler(ideapad_wmi_fnesc_events[i],
1000 ideapad_wmi_notify, priv);
1002 priv->fnesc_guid = ideapad_wmi_fnesc_events[i];
1006 if (ret != AE_OK && ret != AE_NOT_EXIST)
1007 goto notification_failed_wmi;
1011 #if IS_ENABLED(CONFIG_ACPI_WMI)
1012 notification_failed_wmi:
1013 acpi_remove_notify_handler(priv->adev->handle,
1014 ACPI_DEVICE_NOTIFY, ideapad_acpi_notify);
1016 notification_failed:
1017 ideapad_backlight_exit(priv);
1019 for (i = 0; i < IDEAPAD_RFKILL_DEV_NUM; i++)
1020 ideapad_unregister_rfkill(priv, i);
1021 ideapad_input_exit(priv);
1023 ideapad_debugfs_exit(priv);
1025 ideapad_sysfs_exit(priv);
1029 static int ideapad_acpi_remove(struct platform_device *pdev)
1031 struct ideapad_private *priv = dev_get_drvdata(&pdev->dev);
1034 #if IS_ENABLED(CONFIG_ACPI_WMI)
1035 if (priv->fnesc_guid)
1036 wmi_remove_notify_handler(priv->fnesc_guid);
1038 acpi_remove_notify_handler(priv->adev->handle,
1039 ACPI_DEVICE_NOTIFY, ideapad_acpi_notify);
1040 ideapad_backlight_exit(priv);
1041 for (i = 0; i < IDEAPAD_RFKILL_DEV_NUM; i++)
1042 ideapad_unregister_rfkill(priv, i);
1043 ideapad_input_exit(priv);
1044 ideapad_debugfs_exit(priv);
1045 ideapad_sysfs_exit(priv);
1046 dev_set_drvdata(&pdev->dev, NULL);
1051 #ifdef CONFIG_PM_SLEEP
1052 static int ideapad_acpi_resume(struct device *device)
1054 struct ideapad_private *priv;
1058 priv = dev_get_drvdata(device);
1060 ideapad_sync_rfk_state(priv);
1061 ideapad_sync_touchpad_state(priv);
1065 static SIMPLE_DEV_PM_OPS(ideapad_pm, NULL, ideapad_acpi_resume);
1067 static const struct acpi_device_id ideapad_device_ids[] = {
1071 MODULE_DEVICE_TABLE(acpi, ideapad_device_ids);
1073 static struct platform_driver ideapad_acpi_driver = {
1074 .probe = ideapad_acpi_add,
1075 .remove = ideapad_acpi_remove,
1077 .name = "ideapad_acpi",
1079 .acpi_match_table = ACPI_PTR(ideapad_device_ids),
1083 module_platform_driver(ideapad_acpi_driver);
1085 MODULE_AUTHOR("David Woodhouse <dwmw2@infradead.org>");
1086 MODULE_DESCRIPTION("IdeaPad ACPI Extras");
1087 MODULE_LICENSE("GPL");