ideapad-laptop.c 32.9 KB
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/*
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 *  ideapad-laptop.c - Lenovo IdeaPad ACPI Extras
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 *
 *  Copyright © 2010 Intel Corporation
 *  Copyright © 2010 David Woodhouse <dwmw2@infradead.org>
 *
 *  This program is free software; you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
 *  the Free Software Foundation; either version 2 of the License, or
 *  (at your option) any later version.
 *
 *  This program is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *  GNU General Public License for more details.
 *
 *  You should have received a copy of the GNU General Public License
 *  along with this program; if not, write to the Free Software
 *  Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
 *  02110-1301, USA.
 */

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#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt

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#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/init.h>
#include <linux/types.h>
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#include <linux/acpi.h>
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#include <linux/rfkill.h>
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#include <linux/platform_device.h>
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#include <linux/input.h>
#include <linux/input/sparse-keymap.h>
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#include <linux/backlight.h>
#include <linux/fb.h>
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#include <linux/debugfs.h>
#include <linux/seq_file.h>
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#include <linux/i8042.h>
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#include <linux/dmi.h>
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#include <linux/device.h>
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#include <acpi/video.h>
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#define IDEAPAD_RFKILL_DEV_NUM	(3)
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#define BM_CONSERVATION_BIT (5)
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#define HA_FNLOCK_BIT       (10)
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#define CFG_BT_BIT	(16)
#define CFG_3G_BIT	(17)
#define CFG_WIFI_BIT	(18)
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#define CFG_CAMERA_BIT	(19)
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#if IS_ENABLED(CONFIG_ACPI_WMI)
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static const char *const ideapad_wmi_fnesc_events[] = {
	"26CAB2E5-5CF1-46AE-AAC3-4A12B6BA50E6", /* Yoga 3 */
	"56322276-8493-4CE8-A783-98C991274F5E", /* Yoga 700 */
};
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#endif

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enum {
	BMCMD_CONSERVATION_ON = 3,
	BMCMD_CONSERVATION_OFF = 5,
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	HACMD_FNLOCK_ON = 0xe,
	HACMD_FNLOCK_OFF = 0xf,
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};

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enum {
	VPCCMD_R_VPC1 = 0x10,
	VPCCMD_R_BL_MAX,
	VPCCMD_R_BL,
	VPCCMD_W_BL,
	VPCCMD_R_WIFI,
	VPCCMD_W_WIFI,
	VPCCMD_R_BT,
	VPCCMD_W_BT,
	VPCCMD_R_BL_POWER,
	VPCCMD_R_NOVO,
	VPCCMD_R_VPC2,
	VPCCMD_R_TOUCHPAD,
	VPCCMD_W_TOUCHPAD,
	VPCCMD_R_CAMERA,
	VPCCMD_W_CAMERA,
	VPCCMD_R_3G,
	VPCCMD_W_3G,
	VPCCMD_R_ODD, /* 0x21 */
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	VPCCMD_W_FAN,
	VPCCMD_R_RF,
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	VPCCMD_W_RF,
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	VPCCMD_R_FAN = 0x2B,
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	VPCCMD_R_SPECIAL_BUTTONS = 0x31,
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	VPCCMD_W_BL_POWER = 0x33,
};

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struct ideapad_rfk_priv {
	int dev;
	struct ideapad_private *priv;
};

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struct ideapad_private {
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	struct acpi_device *adev;
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	struct rfkill *rfk[IDEAPAD_RFKILL_DEV_NUM];
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	struct ideapad_rfk_priv rfk_priv[IDEAPAD_RFKILL_DEV_NUM];
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	struct platform_device *platform_device;
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	struct input_dev *inputdev;
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	struct backlight_device *blightdev;
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	struct dentry *debug;
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	unsigned long cfg;
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	bool has_hw_rfkill_switch;
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	const char *fnesc_guid;
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};

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static bool no_bt_rfkill;
module_param(no_bt_rfkill, bool, 0444);
MODULE_PARM_DESC(no_bt_rfkill, "No rfkill for bluetooth.");

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/*
 * ACPI Helpers
 */
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#define IDEAPAD_EC_TIMEOUT (200) /* in ms */
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static int read_method_int(acpi_handle handle, const char *method, int *val)
{
	acpi_status status;
	unsigned long long result;

	status = acpi_evaluate_integer(handle, (char *)method, NULL, &result);
	if (ACPI_FAILURE(status)) {
		*val = -1;
		return -1;
	}
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	*val = result;
	return 0;

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}

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static int method_gbmd(acpi_handle handle, unsigned long *ret)
{
	int result, val;

	result = read_method_int(handle, "GBMD", &val);
	*ret = val;
	return result;
}

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static int method_int1(acpi_handle handle, char *method, int cmd)
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{
	acpi_status status;

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	status = acpi_execute_simple_method(handle, method, cmd);
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	return ACPI_FAILURE(status) ? -1 : 0;
}

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static int method_vpcr(acpi_handle handle, int cmd, int *ret)
{
	acpi_status status;
	unsigned long long result;
	struct acpi_object_list params;
	union acpi_object in_obj;

	params.count = 1;
	params.pointer = &in_obj;
	in_obj.type = ACPI_TYPE_INTEGER;
	in_obj.integer.value = cmd;

	status = acpi_evaluate_integer(handle, "VPCR", &params, &result);

	if (ACPI_FAILURE(status)) {
		*ret = -1;
		return -1;
	}
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	*ret = result;
	return 0;

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}

static int method_vpcw(acpi_handle handle, int cmd, int data)
{
	struct acpi_object_list params;
	union acpi_object in_obj[2];
	acpi_status status;

	params.count = 2;
	params.pointer = in_obj;
	in_obj[0].type = ACPI_TYPE_INTEGER;
	in_obj[0].integer.value = cmd;
	in_obj[1].type = ACPI_TYPE_INTEGER;
	in_obj[1].integer.value = data;

	status = acpi_evaluate_object(handle, "VPCW", &params, NULL);
	if (status != AE_OK)
		return -1;
	return 0;
}

static int read_ec_data(acpi_handle handle, int cmd, unsigned long *data)
{
	int val;
	unsigned long int end_jiffies;

	if (method_vpcw(handle, 1, cmd))
		return -1;

	for (end_jiffies = jiffies+(HZ)*IDEAPAD_EC_TIMEOUT/1000+1;
	     time_before(jiffies, end_jiffies);) {
		schedule();
		if (method_vpcr(handle, 1, &val))
			return -1;
		if (val == 0) {
			if (method_vpcr(handle, 0, &val))
				return -1;
			*data = val;
			return 0;
		}
	}
	pr_err("timeout in read_ec_cmd\n");
	return -1;
}

static int write_ec_cmd(acpi_handle handle, int cmd, unsigned long data)
{
	int val;
	unsigned long int end_jiffies;

	if (method_vpcw(handle, 0, data))
		return -1;
	if (method_vpcw(handle, 1, cmd))
		return -1;

	for (end_jiffies = jiffies+(HZ)*IDEAPAD_EC_TIMEOUT/1000+1;
	     time_before(jiffies, end_jiffies);) {
		schedule();
		if (method_vpcr(handle, 1, &val))
			return -1;
		if (val == 0)
			return 0;
	}
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	pr_err("timeout in %s\n", __func__);
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	return -1;
}

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/*
 * debugfs
 */
static int debugfs_status_show(struct seq_file *s, void *data)
{
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	struct ideapad_private *priv = s->private;
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	unsigned long value;

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	if (!priv)
		return -EINVAL;

	if (!read_ec_data(priv->adev->handle, VPCCMD_R_BL_MAX, &value))
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		seq_printf(s, "Backlight max:\t%lu\n", value);
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	if (!read_ec_data(priv->adev->handle, VPCCMD_R_BL, &value))
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		seq_printf(s, "Backlight now:\t%lu\n", value);
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	if (!read_ec_data(priv->adev->handle, VPCCMD_R_BL_POWER, &value))
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		seq_printf(s, "BL power value:\t%s\n", value ? "On" : "Off");
	seq_printf(s, "=====================\n");

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	if (!read_ec_data(priv->adev->handle, VPCCMD_R_RF, &value))
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		seq_printf(s, "Radio status:\t%s(%lu)\n",
			   value ? "On" : "Off", value);
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	if (!read_ec_data(priv->adev->handle, VPCCMD_R_WIFI, &value))
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		seq_printf(s, "Wifi status:\t%s(%lu)\n",
			   value ? "On" : "Off", value);
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	if (!read_ec_data(priv->adev->handle, VPCCMD_R_BT, &value))
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		seq_printf(s, "BT status:\t%s(%lu)\n",
			   value ? "On" : "Off", value);
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	if (!read_ec_data(priv->adev->handle, VPCCMD_R_3G, &value))
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		seq_printf(s, "3G status:\t%s(%lu)\n",
			   value ? "On" : "Off", value);
	seq_printf(s, "=====================\n");

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	if (!read_ec_data(priv->adev->handle, VPCCMD_R_TOUCHPAD, &value))
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		seq_printf(s, "Touchpad status:%s(%lu)\n",
			   value ? "On" : "Off", value);
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	if (!read_ec_data(priv->adev->handle, VPCCMD_R_CAMERA, &value))
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		seq_printf(s, "Camera status:\t%s(%lu)\n",
			   value ? "On" : "Off", value);
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	seq_puts(s, "=====================\n");

	if (!method_gbmd(priv->adev->handle, &value)) {
		seq_printf(s, "Conservation mode:\t%s(%lu)\n",
			   test_bit(BM_CONSERVATION_BIT, &value) ? "On" : "Off",
			   value);
	}
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	return 0;
}
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DEFINE_SHOW_ATTRIBUTE(debugfs_status);
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static int debugfs_cfg_show(struct seq_file *s, void *data)
{
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	struct ideapad_private *priv = s->private;

	if (!priv) {
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		seq_printf(s, "cfg: N/A\n");
	} else {
		seq_printf(s, "cfg: 0x%.8lX\n\nCapability: ",
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			   priv->cfg);
		if (test_bit(CFG_BT_BIT, &priv->cfg))
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			seq_printf(s, "Bluetooth ");
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		if (test_bit(CFG_3G_BIT, &priv->cfg))
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			seq_printf(s, "3G ");
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		if (test_bit(CFG_WIFI_BIT, &priv->cfg))
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			seq_printf(s, "Wireless ");
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		if (test_bit(CFG_CAMERA_BIT, &priv->cfg))
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			seq_printf(s, "Camera ");
		seq_printf(s, "\nGraphic: ");
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		switch ((priv->cfg)&0x700) {
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		case 0x100:
			seq_printf(s, "Intel");
			break;
		case 0x200:
			seq_printf(s, "ATI");
			break;
		case 0x300:
			seq_printf(s, "Nvidia");
			break;
		case 0x400:
			seq_printf(s, "Intel and ATI");
			break;
		case 0x500:
			seq_printf(s, "Intel and Nvidia");
			break;
		}
		seq_printf(s, "\n");
	}
	return 0;
}
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DEFINE_SHOW_ATTRIBUTE(debugfs_cfg);
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static int ideapad_debugfs_init(struct ideapad_private *priv)
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{
	struct dentry *node;

	priv->debug = debugfs_create_dir("ideapad", NULL);
	if (priv->debug == NULL) {
		pr_err("failed to create debugfs directory");
		goto errout;
	}

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	node = debugfs_create_file("cfg", S_IRUGO, priv->debug, priv,
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				   &debugfs_cfg_fops);
	if (!node) {
		pr_err("failed to create cfg in debugfs");
		goto errout;
	}

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	node = debugfs_create_file("status", S_IRUGO, priv->debug, priv,
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				   &debugfs_status_fops);
	if (!node) {
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		pr_err("failed to create status in debugfs");
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		goto errout;
	}

	return 0;

errout:
	return -ENOMEM;
}

static void ideapad_debugfs_exit(struct ideapad_private *priv)
{
	debugfs_remove_recursive(priv->debug);
	priv->debug = NULL;
}

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/*
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 * sysfs
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 */
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static ssize_t show_ideapad_cam(struct device *dev,
				struct device_attribute *attr,
				char *buf)
{
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	unsigned long result;
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	struct ideapad_private *priv = dev_get_drvdata(dev);
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	if (read_ec_data(priv->adev->handle, VPCCMD_R_CAMERA, &result))
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		return sprintf(buf, "-1\n");
	return sprintf(buf, "%lu\n", result);
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}

static ssize_t store_ideapad_cam(struct device *dev,
				 struct device_attribute *attr,
				 const char *buf, size_t count)
{
	int ret, state;
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	struct ideapad_private *priv = dev_get_drvdata(dev);
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	if (!count)
		return 0;
	if (sscanf(buf, "%i", &state) != 1)
		return -EINVAL;
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	ret = write_ec_cmd(priv->adev->handle, VPCCMD_W_CAMERA, state);
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	if (ret < 0)
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		return -EIO;
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	return count;
}

static DEVICE_ATTR(camera_power, 0644, show_ideapad_cam, store_ideapad_cam);

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static ssize_t show_ideapad_fan(struct device *dev,
				struct device_attribute *attr,
				char *buf)
{
	unsigned long result;
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	struct ideapad_private *priv = dev_get_drvdata(dev);
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	if (read_ec_data(priv->adev->handle, VPCCMD_R_FAN, &result))
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		return sprintf(buf, "-1\n");
	return sprintf(buf, "%lu\n", result);
}

static ssize_t store_ideapad_fan(struct device *dev,
				 struct device_attribute *attr,
				 const char *buf, size_t count)
{
	int ret, state;
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	struct ideapad_private *priv = dev_get_drvdata(dev);
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	if (!count)
		return 0;
	if (sscanf(buf, "%i", &state) != 1)
		return -EINVAL;
	if (state < 0 || state > 4 || state == 3)
		return -EINVAL;
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	ret = write_ec_cmd(priv->adev->handle, VPCCMD_W_FAN, state);
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	if (ret < 0)
		return -EIO;
	return count;
}

static DEVICE_ATTR(fan_mode, 0644, show_ideapad_fan, store_ideapad_fan);

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static ssize_t touchpad_show(struct device *dev,
			     struct device_attribute *attr,
			     char *buf)
{
	struct ideapad_private *priv = dev_get_drvdata(dev);
	unsigned long result;

	if (read_ec_data(priv->adev->handle, VPCCMD_R_TOUCHPAD, &result))
		return sprintf(buf, "-1\n");
	return sprintf(buf, "%lu\n", result);
}

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/* Switch to RO for now: It might be revisited in the future */
static ssize_t __maybe_unused touchpad_store(struct device *dev,
					     struct device_attribute *attr,
					     const char *buf, size_t count)
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{
	struct ideapad_private *priv = dev_get_drvdata(dev);
	bool state;
	int ret;

	ret = kstrtobool(buf, &state);
	if (ret)
		return ret;

	ret = write_ec_cmd(priv->adev->handle, VPCCMD_W_TOUCHPAD, state);
	if (ret < 0)
		return -EIO;
	return count;
}

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static DEVICE_ATTR_RO(touchpad);
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static ssize_t conservation_mode_show(struct device *dev,
				struct device_attribute *attr,
				char *buf)
{
	struct ideapad_private *priv = dev_get_drvdata(dev);
	unsigned long result;

	if (method_gbmd(priv->adev->handle, &result))
		return sprintf(buf, "-1\n");
	return sprintf(buf, "%u\n", test_bit(BM_CONSERVATION_BIT, &result));
}

static ssize_t conservation_mode_store(struct device *dev,
				 struct device_attribute *attr,
				 const char *buf, size_t count)
{
	struct ideapad_private *priv = dev_get_drvdata(dev);
	bool state;
	int ret;

	ret = kstrtobool(buf, &state);
	if (ret)
		return ret;

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	ret = method_int1(priv->adev->handle, "SBMC", state ?
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					      BMCMD_CONSERVATION_ON :
					      BMCMD_CONSERVATION_OFF);
	if (ret < 0)
		return -EIO;
	return count;
}

static DEVICE_ATTR_RW(conservation_mode);

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static ssize_t fn_lock_show(struct device *dev,
			    struct device_attribute *attr,
			    char *buf)
{
	struct ideapad_private *priv = dev_get_drvdata(dev);
	unsigned long result;
	int hals;
	int fail = read_method_int(priv->adev->handle, "HALS", &hals);

	if (fail)
		return sprintf(buf, "-1\n");

	result = hals;
	return sprintf(buf, "%u\n", test_bit(HA_FNLOCK_BIT, &result));
}

static ssize_t fn_lock_store(struct device *dev,
			     struct device_attribute *attr,
			     const char *buf, size_t count)
{
	struct ideapad_private *priv = dev_get_drvdata(dev);
	bool state;
	int ret;

	ret = kstrtobool(buf, &state);
	if (ret)
		return ret;

	ret = method_int1(priv->adev->handle, "SALS", state ?
			  HACMD_FNLOCK_ON :
			  HACMD_FNLOCK_OFF);
	if (ret < 0)
		return -EIO;
	return count;
}

static DEVICE_ATTR_RW(fn_lock);


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static struct attribute *ideapad_attributes[] = {
	&dev_attr_camera_power.attr,
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	&dev_attr_fan_mode.attr,
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	&dev_attr_touchpad.attr,
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	&dev_attr_conservation_mode.attr,
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	&dev_attr_fn_lock.attr,
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	NULL
};

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static umode_t ideapad_is_visible(struct kobject *kobj,
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				 struct attribute *attr,
				 int idx)
{
	struct device *dev = container_of(kobj, struct device, kobj);
	struct ideapad_private *priv = dev_get_drvdata(dev);
	bool supported;

	if (attr == &dev_attr_camera_power.attr)
		supported = test_bit(CFG_CAMERA_BIT, &(priv->cfg));
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	else if (attr == &dev_attr_fan_mode.attr) {
		unsigned long value;
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		supported = !read_ec_data(priv->adev->handle, VPCCMD_R_FAN,
					  &value);
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	} else if (attr == &dev_attr_conservation_mode.attr) {
		supported = acpi_has_method(priv->adev->handle, "GBMD") &&
			    acpi_has_method(priv->adev->handle, "SBMC");
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	} else if (attr == &dev_attr_fn_lock.attr) {
		supported = acpi_has_method(priv->adev->handle, "HALS") &&
			acpi_has_method(priv->adev->handle, "SALS");
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	} else
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		supported = true;

	return supported ? attr->mode : 0;
}

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static const struct attribute_group ideapad_attribute_group = {
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	.is_visible = ideapad_is_visible,
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	.attrs = ideapad_attributes
};

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/*
 * Rfkill
 */
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struct ideapad_rfk_data {
	char *name;
	int cfgbit;
	int opcode;
	int type;
};

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static const struct ideapad_rfk_data ideapad_rfk_data[] = {
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	{ "ideapad_wlan",    CFG_WIFI_BIT, VPCCMD_W_WIFI, RFKILL_TYPE_WLAN },
	{ "ideapad_bluetooth", CFG_BT_BIT, VPCCMD_W_BT, RFKILL_TYPE_BLUETOOTH },
	{ "ideapad_3g",        CFG_3G_BIT, VPCCMD_W_3G, RFKILL_TYPE_WWAN },
596 597
};

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598 599
static int ideapad_rfk_set(void *data, bool blocked)
{
600
	struct ideapad_rfk_priv *priv = data;
601
	int opcode = ideapad_rfk_data[priv->dev].opcode;
I
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602

603
	return write_ec_cmd(priv->priv->adev->handle, opcode, !blocked);
D
David Woodhouse 已提交
604 605
}

606
static const struct rfkill_ops ideapad_rfk_ops = {
D
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607 608 609
	.set_block = ideapad_rfk_set,
};

610
static void ideapad_sync_rfk_state(struct ideapad_private *priv)
D
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611
{
612
	unsigned long hw_blocked = 0;
D
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613 614
	int i;

615 616 617 618 619
	if (priv->has_hw_rfkill_switch) {
		if (read_ec_data(priv->adev->handle, VPCCMD_R_RF, &hw_blocked))
			return;
		hw_blocked = !hw_blocked;
	}
D
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620

621
	for (i = 0; i < IDEAPAD_RFKILL_DEV_NUM; i++)
622
		if (priv->rfk[i])
I
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623
			rfkill_set_hw_state(priv->rfk[i], hw_blocked);
D
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624 625
}

626
static int ideapad_register_rfkill(struct ideapad_private *priv, int dev)
D
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627 628
{
	int ret;
I
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629
	unsigned long sw_blocked;
D
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630

I
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631 632 633
	if (no_bt_rfkill &&
	    (ideapad_rfk_data[dev].type == RFKILL_TYPE_BLUETOOTH)) {
		/* Force to enable bluetooth when no_bt_rfkill=1 */
634
		write_ec_cmd(priv->adev->handle,
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635 636 637
			     ideapad_rfk_data[dev].opcode, 1);
		return 0;
	}
638 639
	priv->rfk_priv[dev].dev = dev;
	priv->rfk_priv[dev].priv = priv;
I
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640

641
	priv->rfk[dev] = rfkill_alloc(ideapad_rfk_data[dev].name,
642
				      &priv->platform_device->dev,
643 644
				      ideapad_rfk_data[dev].type,
				      &ideapad_rfk_ops,
645
				      &priv->rfk_priv[dev]);
646
	if (!priv->rfk[dev])
D
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647 648
		return -ENOMEM;

649
	if (read_ec_data(priv->adev->handle, ideapad_rfk_data[dev].opcode-1,
I
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650 651 652 653 654 655 656
			 &sw_blocked)) {
		rfkill_init_sw_state(priv->rfk[dev], 0);
	} else {
		sw_blocked = !sw_blocked;
		rfkill_init_sw_state(priv->rfk[dev], sw_blocked);
	}

657
	ret = rfkill_register(priv->rfk[dev]);
D
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658
	if (ret) {
659
		rfkill_destroy(priv->rfk[dev]);
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660 661 662 663 664
		return ret;
	}
	return 0;
}

665
static void ideapad_unregister_rfkill(struct ideapad_private *priv, int dev)
D
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666
{
667
	if (!priv->rfk[dev])
D
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668 669
		return;

670 671
	rfkill_unregister(priv->rfk[dev]);
	rfkill_destroy(priv->rfk[dev]);
D
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672 673
}

674 675 676
/*
 * Platform device
 */
677
static 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
}

683
static void ideapad_sysfs_exit(struct ideapad_private *priv)
684
{
685
	sysfs_remove_group(&priv->platform_device->dev.kobj,
686
			   &ideapad_attribute_group);
687 688
}

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689 690 691 692
/*
 * input device
 */
static const struct key_entry ideapad_keymap[] = {
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693
	{ KE_KEY, 6,  { KEY_SWITCHVIDEOMODE } },
694
	{ KE_KEY, 7,  { KEY_CAMERA } },
695
	{ KE_KEY, 8,  { KEY_MICMUTE } },
696
	{ KE_KEY, 11, { KEY_F16 } },
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697 698 699
	{ KE_KEY, 13, { KEY_WLAN } },
	{ KE_KEY, 16, { KEY_PROG1 } },
	{ KE_KEY, 17, { KEY_PROG2 } },
700 701
	{ KE_KEY, 64, { KEY_PROG3 } },
	{ KE_KEY, 65, { KEY_PROG4 } },
702 703
	{ KE_KEY, 66, { KEY_TOUCHPAD_OFF } },
	{ KE_KEY, 67, { KEY_TOUCHPAD_ON } },
704 705
	{ KE_KEY, 128, { KEY_ESC } },

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	{ KE_END, 0 },
};

709
static int ideapad_input_init(struct ideapad_private *priv)
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710 711 712 713 714
{
	struct input_dev *inputdev;
	int error;

	inputdev = input_allocate_device();
715
	if (!inputdev)
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716 717 718 719 720
		return -ENOMEM;

	inputdev->name = "Ideapad extra buttons";
	inputdev->phys = "ideapad/input0";
	inputdev->id.bustype = BUS_HOST;
721
	inputdev->dev.parent = &priv->platform_device->dev;
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722 723 724 725 726 727 728 729 730 731

	error = sparse_keymap_setup(inputdev, ideapad_keymap, NULL);
	if (error) {
		pr_err("Unable to setup input device keymap\n");
		goto err_free_dev;
	}

	error = input_register_device(inputdev);
	if (error) {
		pr_err("Unable to register input device\n");
732
		goto err_free_dev;
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733 734
	}

735
	priv->inputdev = inputdev;
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	return 0;

err_free_dev:
	input_free_device(inputdev);
	return error;
}

743
static void ideapad_input_exit(struct ideapad_private *priv)
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744
{
745 746
	input_unregister_device(priv->inputdev);
	priv->inputdev = NULL;
I
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747 748
}

749 750
static void ideapad_input_report(struct ideapad_private *priv,
				 unsigned long scancode)
I
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751
{
752
	sparse_keymap_report_event(priv->inputdev, scancode, 1, true);
I
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753 754
}

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755 756 757 758
static void ideapad_input_novokey(struct ideapad_private *priv)
{
	unsigned long long_pressed;

759
	if (read_ec_data(priv->adev->handle, VPCCMD_R_NOVO, &long_pressed))
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		return;
	if (long_pressed)
		ideapad_input_report(priv, 17);
	else
		ideapad_input_report(priv, 16);
}

767 768 769 770
static void ideapad_check_special_buttons(struct ideapad_private *priv)
{
	unsigned long bit, value;

771
	read_ec_data(priv->adev->handle, VPCCMD_R_SPECIAL_BUTTONS, &value);
772 773 774 775

	for (bit = 0; bit < 16; bit++) {
		if (test_bit(bit, &value)) {
			switch (bit) {
776 777
			case 0:	/* Z580 */
			case 6:	/* Z570 */
778 779 780 781 782 783 784
				/* Thermal Management button */
				ideapad_input_report(priv, 65);
				break;
			case 1:
				/* OneKey Theater button */
				ideapad_input_report(priv, 64);
				break;
785 786 787
			default:
				pr_info("Unknown special button: %lu\n", bit);
				break;
788 789 790 791 792
			}
		}
	}
}

I
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793 794 795 796 797
/*
 * backlight
 */
static int ideapad_backlight_get_brightness(struct backlight_device *blightdev)
{
798
	struct ideapad_private *priv = bl_get_data(blightdev);
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799 800
	unsigned long now;

801 802 803 804
	if (!priv)
		return -EINVAL;

	if (read_ec_data(priv->adev->handle, VPCCMD_R_BL, &now))
I
Ike Panhc 已提交
805 806 807 808 809 810
		return -EIO;
	return now;
}

static int ideapad_backlight_update_status(struct backlight_device *blightdev)
{
811 812 813 814 815 816
	struct ideapad_private *priv = bl_get_data(blightdev);

	if (!priv)
		return -EINVAL;

	if (write_ec_cmd(priv->adev->handle, VPCCMD_W_BL,
I
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817
			 blightdev->props.brightness))
I
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818
		return -EIO;
819
	if (write_ec_cmd(priv->adev->handle, VPCCMD_W_BL_POWER,
I
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820 821 822 823 824 825 826 827 828 829 830 831 832 833 834 835 836
			 blightdev->props.power == FB_BLANK_POWERDOWN ? 0 : 1))
		return -EIO;

	return 0;
}

static const struct backlight_ops ideapad_backlight_ops = {
	.get_brightness = ideapad_backlight_get_brightness,
	.update_status = ideapad_backlight_update_status,
};

static int ideapad_backlight_init(struct ideapad_private *priv)
{
	struct backlight_device *blightdev;
	struct backlight_properties props;
	unsigned long max, now, power;

837
	if (read_ec_data(priv->adev->handle, VPCCMD_R_BL_MAX, &max))
I
Ike Panhc 已提交
838
		return -EIO;
839
	if (read_ec_data(priv->adev->handle, VPCCMD_R_BL, &now))
I
Ike Panhc 已提交
840
		return -EIO;
841
	if (read_ec_data(priv->adev->handle, VPCCMD_R_BL_POWER, &power))
I
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842 843 844 845 846 847 848 849 850 851 852 853 854 855 856 857 858 859 860 861 862 863 864 865 866
		return -EIO;

	memset(&props, 0, sizeof(struct backlight_properties));
	props.max_brightness = max;
	props.type = BACKLIGHT_PLATFORM;
	blightdev = backlight_device_register("ideapad",
					      &priv->platform_device->dev,
					      priv,
					      &ideapad_backlight_ops,
					      &props);
	if (IS_ERR(blightdev)) {
		pr_err("Could not register backlight device\n");
		return PTR_ERR(blightdev);
	}

	priv->blightdev = blightdev;
	blightdev->props.brightness = now;
	blightdev->props.power = power ? FB_BLANK_UNBLANK : FB_BLANK_POWERDOWN;
	backlight_update_status(blightdev);

	return 0;
}

static void ideapad_backlight_exit(struct ideapad_private *priv)
{
867
	backlight_device_unregister(priv->blightdev);
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868 869 870 871 872 873 874 875
	priv->blightdev = NULL;
}

static void ideapad_backlight_notify_power(struct ideapad_private *priv)
{
	unsigned long power;
	struct backlight_device *blightdev = priv->blightdev;

876 877
	if (!blightdev)
		return;
878
	if (read_ec_data(priv->adev->handle, VPCCMD_R_BL_POWER, &power))
I
Ike Panhc 已提交
879 880 881 882 883 884 885 886 887 888
		return;
	blightdev->props.power = power ? FB_BLANK_UNBLANK : FB_BLANK_POWERDOWN;
}

static void ideapad_backlight_notify_brightness(struct ideapad_private *priv)
{
	unsigned long now;

	/* if we control brightness via acpi video driver */
	if (priv->blightdev == NULL) {
889
		read_ec_data(priv->adev->handle, VPCCMD_R_BL, &now);
I
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890 891 892 893 894 895
		return;
	}

	backlight_force_update(priv->blightdev, BACKLIGHT_UPDATE_HOTKEY);
}

896 897 898
/*
 * module init/exit
 */
899
static void ideapad_sync_touchpad_state(struct ideapad_private *priv)
900 901 902 903
{
	unsigned long value;

	/* Without reading from EC touchpad LED doesn't switch state */
904
	if (!read_ec_data(priv->adev->handle, VPCCMD_R_TOUCHPAD, &value)) {
905 906 907 908 909 910 911 912 913 914 915
		/* Some IdeaPads don't really turn off touchpad - they only
		 * switch the LED state. We (de)activate KBC AUX port to turn
		 * touchpad off and on. We send KEY_TOUCHPAD_OFF and
		 * KEY_TOUCHPAD_ON to not to get out of sync with LED */
		unsigned char param;
		i8042_command(&param, value ? I8042_CMD_AUX_ENABLE :
			      I8042_CMD_AUX_DISABLE);
		ideapad_input_report(priv, value ? 67 : 66);
	}
}

916 917 918 919 920 921 922 923 924 925 926 927 928 929 930 931 932 933 934
static void ideapad_acpi_notify(acpi_handle handle, u32 event, void *data)
{
	struct ideapad_private *priv = data;
	unsigned long vpc1, vpc2, vpc_bit;

	if (read_ec_data(handle, VPCCMD_R_VPC1, &vpc1))
		return;
	if (read_ec_data(handle, VPCCMD_R_VPC2, &vpc2))
		return;

	vpc1 = (vpc2 << 8) | vpc1;
	for (vpc_bit = 0; vpc_bit < 16; vpc_bit++) {
		if (test_bit(vpc_bit, &vpc1)) {
			switch (vpc_bit) {
			case 9:
				ideapad_sync_rfk_state(priv);
				break;
			case 13:
			case 11:
935
			case 8:
936 937 938 939 940 941 942 943 944 945 946 947 948 949 950 951 952 953 954
			case 7:
			case 6:
				ideapad_input_report(priv, vpc_bit);
				break;
			case 5:
				ideapad_sync_touchpad_state(priv);
				break;
			case 4:
				ideapad_backlight_notify_brightness(priv);
				break;
			case 3:
				ideapad_input_novokey(priv);
				break;
			case 2:
				ideapad_backlight_notify_power(priv);
				break;
			case 0:
				ideapad_check_special_buttons(priv);
				break;
955 956 957 958 959 960 961
			case 1:
				/* Some IdeaPads report event 1 every ~20
				 * seconds while on battery power; some
				 * report this when changing to/from tablet
				 * mode. Squelch this event.
				 */
				break;
962 963 964 965 966 967 968
			default:
				pr_info("Unknown event: %lu\n", vpc_bit);
			}
		}
	}
}

969 970 971 972 973 974 975 976 977 978 979 980 981
#if IS_ENABLED(CONFIG_ACPI_WMI)
static void ideapad_wmi_notify(u32 value, void *context)
{
	switch (value) {
	case 128:
		ideapad_input_report(context, value);
		break;
	default:
		pr_info("Unknown WMI event %u\n", value);
	}
}
#endif

982 983 984 985 986
/*
 * Some ideapads don't have a hardware rfkill switch, reading VPCCMD_R_RF
 * always results in 0 on these models, causing ideapad_laptop to wrongly
 * report all radios as hardware-blocked.
 */
987
static const struct dmi_system_id no_hw_rfkill_list[] = {
988 989 990 991 992 993 994
	{
		.ident = "Lenovo RESCUER R720-15IKBN",
		.matches = {
			DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
			DMI_MATCH(DMI_BOARD_NAME, "80WW"),
		},
	},
995 996 997 998 999 1000 1001
	{
		.ident = "Lenovo G40-30",
		.matches = {
			DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
			DMI_MATCH(DMI_PRODUCT_VERSION, "Lenovo G40-30"),
		},
	},
1002 1003 1004 1005 1006 1007 1008
	{
		.ident = "Lenovo G50-30",
		.matches = {
			DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
			DMI_MATCH(DMI_PRODUCT_VERSION, "Lenovo G50-30"),
		},
	},
1009 1010 1011 1012 1013 1014 1015 1016 1017 1018 1019 1020 1021 1022 1023 1024 1025 1026 1027 1028 1029
	{
		.ident = "Lenovo V310-14IKB",
		.matches = {
			DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
			DMI_MATCH(DMI_PRODUCT_VERSION, "Lenovo V310-14IKB"),
		},
	},
	{
		.ident = "Lenovo V310-14ISK",
		.matches = {
			DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
			DMI_MATCH(DMI_PRODUCT_VERSION, "Lenovo V310-14ISK"),
		},
	},
	{
		.ident = "Lenovo V310-15IKB",
		.matches = {
			DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
			DMI_MATCH(DMI_PRODUCT_VERSION, "Lenovo V310-15IKB"),
		},
	},
1030 1031 1032
	{
		.ident = "Lenovo V310-15ISK",
		.matches = {
1033 1034
			DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
			DMI_MATCH(DMI_PRODUCT_VERSION, "Lenovo V310-15ISK"),
1035 1036
		},
	},
1037 1038 1039 1040 1041 1042 1043
	{
		.ident = "Lenovo V510-15IKB",
		.matches = {
			DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
			DMI_MATCH(DMI_PRODUCT_VERSION, "Lenovo V510-15IKB"),
		},
	},
1044 1045 1046 1047 1048 1049 1050 1051 1052 1053 1054 1055 1056 1057 1058 1059 1060 1061 1062 1063 1064 1065 1066 1067 1068 1069 1070 1071 1072 1073 1074 1075 1076 1077 1078
	{
		.ident = "Lenovo ideapad 300-15IBR",
		.matches = {
			DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
			DMI_MATCH(DMI_PRODUCT_VERSION, "Lenovo ideapad 300-15IBR"),
		},
	},
	{
		.ident = "Lenovo ideapad 300-15IKB",
		.matches = {
			DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
			DMI_MATCH(DMI_PRODUCT_VERSION, "Lenovo ideapad 300-15IKB"),
		},
	},
	{
		.ident = "Lenovo ideapad 300S-11IBR",
		.matches = {
			DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
			DMI_MATCH(DMI_PRODUCT_VERSION, "Lenovo ideapad 300S-11BR"),
		},
	},
	{
		.ident = "Lenovo ideapad 310-15ABR",
		.matches = {
			DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
			DMI_MATCH(DMI_PRODUCT_VERSION, "Lenovo ideapad 310-15ABR"),
		},
	},
	{
		.ident = "Lenovo ideapad 310-15IAP",
		.matches = {
			DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
			DMI_MATCH(DMI_PRODUCT_VERSION, "Lenovo ideapad 310-15IAP"),
		},
	},
1079 1080 1081
	{
		.ident = "Lenovo ideapad 310-15IKB",
		.matches = {
1082 1083
			DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
			DMI_MATCH(DMI_PRODUCT_VERSION, "Lenovo ideapad 310-15IKB"),
1084 1085
		},
	},
1086 1087 1088 1089 1090 1091 1092 1093 1094 1095 1096 1097 1098 1099
	{
		.ident = "Lenovo ideapad 310-15ISK",
		.matches = {
			DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
			DMI_MATCH(DMI_PRODUCT_VERSION, "Lenovo ideapad 310-15ISK"),
		},
	},
	{
		.ident = "Lenovo ideapad Y700-14ISK",
		.matches = {
			DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
			DMI_MATCH(DMI_PRODUCT_VERSION, "Lenovo ideapad Y700-14ISK"),
		},
	},
1100 1101 1102 1103 1104 1105 1106
	{
		.ident = "Lenovo ideapad Y700-15ACZ",
		.matches = {
			DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
			DMI_MATCH(DMI_PRODUCT_VERSION, "Lenovo ideapad Y700-15ACZ"),
		},
	},
1107 1108 1109 1110 1111 1112 1113 1114 1115 1116 1117 1118 1119 1120
	{
		.ident = "Lenovo ideapad Y700-15ISK",
		.matches = {
			DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
			DMI_MATCH(DMI_PRODUCT_VERSION, "Lenovo ideapad Y700-15ISK"),
		},
	},
	{
		.ident = "Lenovo ideapad Y700 Touch-15ISK",
		.matches = {
			DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
			DMI_MATCH(DMI_PRODUCT_VERSION, "Lenovo ideapad Y700 Touch-15ISK"),
		},
	},
1121 1122 1123 1124 1125 1126 1127
	{
		.ident = "Lenovo ideapad Y700-17ISK",
		.matches = {
			DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
			DMI_MATCH(DMI_PRODUCT_VERSION, "Lenovo ideapad Y700-17ISK"),
		},
	},
1128 1129 1130 1131 1132 1133 1134
	{
		.ident = "Lenovo ideapad MIIX 720-12IKB",
		.matches = {
			DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
			DMI_MATCH(DMI_PRODUCT_VERSION, "MIIX 720-12IKB"),
		},
	},
1135
	{
1136
		.ident = "Lenovo Legion Y520-15IKB",
1137 1138
		.matches = {
			DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
1139
			DMI_MATCH(DMI_PRODUCT_VERSION, "Lenovo Y520-15IKB"),
1140 1141
		},
	},
1142 1143 1144 1145 1146 1147 1148
	{
		.ident = "Lenovo Y520-15IKBM",
		.matches = {
			DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
			DMI_MATCH(DMI_PRODUCT_VERSION, "Lenovo Y520-15IKBM"),
		},
	},
1149 1150 1151 1152 1153 1154 1155
	{
		.ident = "Lenovo Legion Y720-15IKB",
		.matches = {
			DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
			DMI_MATCH(DMI_PRODUCT_VERSION, "Lenovo Y720-15IKB"),
		},
	},
1156 1157 1158 1159 1160 1161 1162
	{
		.ident = "Lenovo Legion Y720-15IKBN",
		.matches = {
			DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
			DMI_MATCH(DMI_PRODUCT_VERSION, "Lenovo Y720-15IKBN"),
		},
	},
1163 1164 1165 1166 1167 1168 1169
	{
		.ident = "Lenovo Y720-15IKBM",
		.matches = {
			DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
			DMI_MATCH(DMI_PRODUCT_VERSION, "Lenovo Y720-15IKBM"),
		},
	},
1170
	{
1171
		.ident = "Lenovo Yoga 2 11 / 13 / Pro",
1172 1173
		.matches = {
			DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
1174
			DMI_MATCH(DMI_PRODUCT_VERSION, "Lenovo Yoga 2"),
1175 1176
		},
	},
1177
	{
1178
		.ident = "Lenovo Yoga 2 11 / 13 / Pro",
1179 1180
		.matches = {
			DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
1181
			DMI_MATCH(DMI_BOARD_NAME, "Yoga2"),
1182 1183
		},
	},
1184
	{
1185
		.ident = "Lenovo Yoga 3 1170 / 1470",
1186 1187
		.matches = {
			DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
1188
			DMI_MATCH(DMI_PRODUCT_VERSION, "Lenovo Yoga 3"),
1189 1190
		},
	},
1191 1192 1193 1194
	{
		.ident = "Lenovo Yoga 3 Pro 1370",
		.matches = {
			DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
1195
			DMI_MATCH(DMI_PRODUCT_VERSION, "Lenovo YOGA 3"),
1196 1197
		},
	},
1198 1199 1200 1201 1202 1203 1204
	{
		.ident = "Lenovo Yoga 700",
		.matches = {
			DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
			DMI_MATCH(DMI_PRODUCT_VERSION, "Lenovo YOGA 700"),
		},
	},
1205 1206 1207 1208 1209 1210 1211
	{
		.ident = "Lenovo Yoga 900",
		.matches = {
			DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
			DMI_MATCH(DMI_PRODUCT_VERSION, "Lenovo YOGA 900"),
		},
	},
1212 1213 1214 1215 1216 1217 1218
	{
		.ident = "Lenovo Yoga 900",
		.matches = {
			DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
			DMI_MATCH(DMI_BOARD_NAME, "VIUU4"),
		},
	},
1219 1220 1221 1222 1223 1224 1225
	{
		.ident = "Lenovo YOGA 910-13IKB",
		.matches = {
			DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
			DMI_MATCH(DMI_PRODUCT_VERSION, "Lenovo YOGA 910-13IKB"),
		},
	},
1226 1227 1228 1229 1230 1231 1232
	{
		.ident = "Lenovo YOGA 920-13IKB",
		.matches = {
			DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
			DMI_MATCH(DMI_PRODUCT_VERSION, "Lenovo YOGA 920-13IKB"),
		},
	},
1233 1234 1235 1236 1237 1238 1239
	{
		.ident = "Lenovo Zhaoyang E42-80",
		.matches = {
			DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
			DMI_MATCH(DMI_PRODUCT_VERSION, "ZHAOYANG E42-80"),
		},
	},
1240 1241 1242
	{}
};

1243
static int ideapad_acpi_add(struct platform_device *pdev)
D
David Woodhouse 已提交
1244
{
1245
	int ret, i;
1246
	int cfg;
1247
	struct ideapad_private *priv;
1248 1249 1250 1251 1252
	struct acpi_device *adev;

	ret = acpi_bus_get_device(ACPI_HANDLE(&pdev->dev), &adev);
	if (ret)
		return -ENODEV;
D
David Woodhouse 已提交
1253

1254
	if (read_method_int(adev->handle, "_CFG", &cfg))
1255 1256
		return -ENODEV;

1257
	priv = devm_kzalloc(&pdev->dev, sizeof(*priv), GFP_KERNEL);
1258 1259
	if (!priv)
		return -ENOMEM;
1260 1261

	dev_set_drvdata(&pdev->dev, priv);
1262
	priv->cfg = cfg;
1263
	priv->adev = adev;
1264
	priv->platform_device = pdev;
1265
	priv->has_hw_rfkill_switch = !dmi_check_system(no_hw_rfkill_list);
1266

1267
	ret = ideapad_sysfs_init(priv);
1268
	if (ret)
1269
		return ret;
1270

I
Ike Panhc 已提交
1271 1272 1273 1274
	ret = ideapad_debugfs_init(priv);
	if (ret)
		goto debugfs_failed;

1275
	ret = ideapad_input_init(priv);
I
Ike Panhc 已提交
1276 1277 1278
	if (ret)
		goto input_failed;

1279 1280 1281 1282 1283 1284 1285 1286 1287 1288 1289
	/*
	 * On some models without a hw-switch (the yoga 2 13 at least)
	 * VPCCMD_W_RF must be explicitly set to 1 for the wifi to work.
	 */
	if (!priv->has_hw_rfkill_switch)
		write_ec_cmd(priv->adev->handle, VPCCMD_W_RF, 1);

	for (i = 0; i < IDEAPAD_RFKILL_DEV_NUM; i++)
		if (test_bit(ideapad_rfk_data[i].cfgbit, &priv->cfg))
			ideapad_register_rfkill(priv, i);

1290
	ideapad_sync_rfk_state(priv);
1291
	ideapad_sync_touchpad_state(priv);
1292

1293
	if (acpi_video_get_backlight_type() == acpi_backlight_vendor) {
I
Ike Panhc 已提交
1294 1295 1296 1297
		ret = ideapad_backlight_init(priv);
		if (ret && ret != -ENODEV)
			goto backlight_failed;
	}
1298 1299 1300 1301
	ret = acpi_install_notify_handler(adev->handle,
		ACPI_DEVICE_NOTIFY, ideapad_acpi_notify, priv);
	if (ret)
		goto notification_failed;
1302

1303
#if IS_ENABLED(CONFIG_ACPI_WMI)
1304 1305 1306 1307 1308 1309 1310 1311
	for (i = 0; i < ARRAY_SIZE(ideapad_wmi_fnesc_events); i++) {
		ret = wmi_install_notify_handler(ideapad_wmi_fnesc_events[i],
						 ideapad_wmi_notify, priv);
		if (ret == AE_OK) {
			priv->fnesc_guid = ideapad_wmi_fnesc_events[i];
			break;
		}
	}
1312 1313 1314
	if (ret != AE_OK && ret != AE_NOT_EXIST)
		goto notification_failed_wmi;
#endif
I
Ike Panhc 已提交
1315

D
David Woodhouse 已提交
1316
	return 0;
1317 1318 1319 1320 1321
#if IS_ENABLED(CONFIG_ACPI_WMI)
notification_failed_wmi:
	acpi_remove_notify_handler(priv->adev->handle,
		ACPI_DEVICE_NOTIFY, ideapad_acpi_notify);
#endif
1322 1323
notification_failed:
	ideapad_backlight_exit(priv);
I
Ike Panhc 已提交
1324 1325
backlight_failed:
	for (i = 0; i < IDEAPAD_RFKILL_DEV_NUM; i++)
1326
		ideapad_unregister_rfkill(priv, i);
1327
	ideapad_input_exit(priv);
I
Ike Panhc 已提交
1328
input_failed:
I
Ike Panhc 已提交
1329 1330
	ideapad_debugfs_exit(priv);
debugfs_failed:
1331
	ideapad_sysfs_exit(priv);
1332
	return ret;
D
David Woodhouse 已提交
1333 1334
}

1335
static int ideapad_acpi_remove(struct platform_device *pdev)
D
David Woodhouse 已提交
1336
{
1337
	struct ideapad_private *priv = dev_get_drvdata(&pdev->dev);
D
David Woodhouse 已提交
1338
	int i;
1339

1340
#if IS_ENABLED(CONFIG_ACPI_WMI)
1341 1342
	if (priv->fnesc_guid)
		wmi_remove_notify_handler(priv->fnesc_guid);
1343
#endif
1344 1345
	acpi_remove_notify_handler(priv->adev->handle,
		ACPI_DEVICE_NOTIFY, ideapad_acpi_notify);
I
Ike Panhc 已提交
1346
	ideapad_backlight_exit(priv);
1347
	for (i = 0; i < IDEAPAD_RFKILL_DEV_NUM; i++)
1348
		ideapad_unregister_rfkill(priv, i);
1349
	ideapad_input_exit(priv);
I
Ike Panhc 已提交
1350
	ideapad_debugfs_exit(priv);
1351 1352
	ideapad_sysfs_exit(priv);
	dev_set_drvdata(&pdev->dev, NULL);
1353

D
David Woodhouse 已提交
1354 1355 1356
	return 0;
}

1357
#ifdef CONFIG_PM_SLEEP
1358 1359
static int ideapad_acpi_resume(struct device *device)
{
1360 1361 1362 1363 1364 1365 1366 1367
	struct ideapad_private *priv;

	if (!device)
		return -EINVAL;
	priv = dev_get_drvdata(device);

	ideapad_sync_rfk_state(priv);
	ideapad_sync_touchpad_state(priv);
1368 1369
	return 0;
}
1370
#endif
1371
static SIMPLE_DEV_PM_OPS(ideapad_pm, NULL, ideapad_acpi_resume);
1372

1373 1374 1375
static const struct acpi_device_id ideapad_device_ids[] = {
	{ "VPC2004", 0},
	{ "", 0},
D
David Woodhouse 已提交
1376
};
1377 1378 1379 1380 1381 1382 1383 1384 1385 1386 1387 1388 1389
MODULE_DEVICE_TABLE(acpi, ideapad_device_ids);

static struct platform_driver ideapad_acpi_driver = {
	.probe = ideapad_acpi_add,
	.remove = ideapad_acpi_remove,
	.driver = {
		.name   = "ideapad_acpi",
		.pm     = &ideapad_pm,
		.acpi_match_table = ACPI_PTR(ideapad_device_ids),
	},
};

module_platform_driver(ideapad_acpi_driver);
D
David Woodhouse 已提交
1390 1391 1392 1393

MODULE_AUTHOR("David Woodhouse <dwmw2@infradead.org>");
MODULE_DESCRIPTION("IdeaPad ACPI Extras");
MODULE_LICENSE("GPL");