Merge tag 'platform-drivers-x86-v5.12-1' of git://git.kernel.org/pub/scm/linux/kernel/git/pdx86/platform-drivers-x86

Pull x86 platform driver updates from Hans de Goede:
 "Highlights:

   - Microsoft Surface devices System Aggregator Module support

   - SW_TABLET_MODE reporting improvements

   - thinkpad_acpi keyboard language setting support

   - platform / DPTF profile settings support:

      - Base / userspace API parts merged from Rafael's acpi-platform
        branch

      - thinkpad_acpi and ideapad-laptop support through pdx86

   - Remove support for some obsolete Intel MID platforms through
     merging of the shared intel-mid-removal branch

   - Big cleanup of the ideapad-laptop driver

   - Misc other fixes / new hw support / quirks"

* tag 'platform-drivers-x86-v5.12-1' of git://git.kernel.org/pub/scm/linux/kernel/git/pdx86/platform-drivers-x86: (99 commits)
  platform/x86: intel_scu_ipc: Increase virtual timeout from 3 to 5 seconds
  platform/surface: aggregator: Fix access of unaligned value
  tools/power/x86/intel-speed-select: Update version to 1.8
  tools/power/x86/intel-speed-select: Add new command to get/set TRL
  tools/power/x86/intel-speed-select: Add new command turbo-mode
  Platform: OLPC: Constify static struct regulator_ops
  platform/surface: Add Surface Hot-Plug driver
  platform/x86: intel_scu_wdt: Drop mistakenly added const
  platform/x86: Kconfig: add missing selects for ideapad-laptop
  platform/x86: acer-wmi: Don't use ACPI_EXCEPTION()
  platform/x86: thinkpad_acpi: Replace ifdef CONFIG_ACPI_PLATFORM_PROFILE with depends on
  platform/x86: thinkpad_acpi: Fix 'warning: no previous prototype for' warnings
  platform/x86: msi-wmi: Fix variable 'status' set but not used compiler warning
  platform/surface: surface3-wmi: Fix variable 'status' set but not used compiler warning
  platform/x86: Move all dell drivers to their own subdirectory
  Documentation/ABI: sysfs-platform-ideapad-laptop: conservation_mode attribute
  Documentation/ABI: sysfs-platform-ideapad-laptop: update device attribute paths
  platform/x86: ideapad-laptop: add "always on USB charging" control support
  platform/x86: ideapad-laptop: add keyboard backlight control support
  platform/x86: ideapad-laptop: send notification about touchpad state change to sysfs
  ...

1 files changed, 1017 insertions, 439 deletions

diff --git a/drivers/platform/x86/ideapad-laptop.c b/drivers/platform/x86/ideapad-laptop.c
index 5b81bafa5c16..6cb5ad4be231 100644
--- a/drivers/platform/x86/ideapad-laptop.c
+++ b/drivers/platform/x86/ideapad-laptop.c
@@ -8,33 +8,34 @@
 
 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
 
-#include <linux/kernel.h>
-#include <linux/module.h>
-#include <linux/init.h>
-#include <linux/types.h>
 #include <linux/acpi.h>
-#include <linux/rfkill.h>
-#include <linux/platform_device.h>
-#include <linux/input.h>
-#include <linux/input/sparse-keymap.h>
 #include <linux/backlight.h>
-#include <linux/fb.h>
+#include <linux/bitops.h>
+#include <linux/bug.h>
 #include <linux/debugfs.h>
-#include <linux/seq_file.h>
-#include <linux/i8042.h>
-#include <linux/dmi.h>
 #include <linux/device.h>
-#include <acpi/video.h>
+#include <linux/dmi.h>
+#include <linux/fb.h>
+#include <linux/i8042.h>
+#include <linux/init.h>
+#include <linux/input.h>
+#include <linux/input/sparse-keymap.h>
+#include <linux/jiffies.h>
+#include <linux/kernel.h>
+#include <linux/leds.h>
+#include <linux/module.h>
+#include <linux/platform_device.h>
+#include <linux/platform_profile.h>
+#include <linux/rfkill.h>
+#include <linux/seq_file.h>
+#include <linux/sysfs.h>
+#include <linux/types.h>
 
-#define IDEAPAD_RFKILL_DEV_NUM	(3)
+#include <acpi/video.h>
 
-#define BM_CONSERVATION_BIT (5)
-#define HA_FNLOCK_BIT       (10)
+#include <dt-bindings/leds/common.h>
 
-#define CFG_BT_BIT	(16)
-#define CFG_3G_BIT	(17)
-#define CFG_WIFI_BIT	(18)
-#define CFG_CAMERA_BIT	(19)
+#define IDEAPAD_RFKILL_DEV_NUM	3
 
 #if IS_ENABLED(CONFIG_ACPI_WMI)
 static const char *const ideapad_wmi_fnesc_events[] = {
@@ -44,10 +45,39 @@ static const char *const ideapad_wmi_fnesc_events[] = {
 #endif
 
 enum {
-	BMCMD_CONSERVATION_ON = 3,
-	BMCMD_CONSERVATION_OFF = 5,
-	HACMD_FNLOCK_ON = 0xe,
-	HACMD_FNLOCK_OFF = 0xf,
+	CFG_CAP_BT_BIT       = 16,
+	CFG_CAP_3G_BIT       = 17,
+	CFG_CAP_WIFI_BIT     = 18,
+	CFG_CAP_CAM_BIT      = 19,
+	CFG_CAP_TOUCHPAD_BIT = 30,
+};
+
+enum {
+	GBMD_CONSERVATION_STATE_BIT = 5,
+};
+
+enum {
+	SMBC_CONSERVATION_ON  = 3,
+	SMBC_CONSERVATION_OFF = 5,
+};
+
+enum {
+	HALS_KBD_BL_SUPPORT_BIT       = 4,
+	HALS_KBD_BL_STATE_BIT         = 5,
+	HALS_USB_CHARGING_SUPPORT_BIT = 6,
+	HALS_USB_CHARGING_STATE_BIT   = 7,
+	HALS_FNLOCK_SUPPORT_BIT       = 9,
+	HALS_FNLOCK_STATE_BIT         = 10,
+	HALS_HOTKEYS_PRIMARY_BIT      = 11,
+};
+
+enum {
+	SALS_KBD_BL_ON        = 0x8,
+	SALS_KBD_BL_OFF       = 0x9,
+	SALS_USB_CHARGING_ON  = 0xa,
+	SALS_USB_CHARGING_OFF = 0xb,
+	SALS_FNLOCK_ON        = 0xe,
+	SALS_FNLOCK_OFF       = 0xf,
 };
 
 enum {
@@ -77,6 +107,13 @@ enum {
 	VPCCMD_W_BL_POWER = 0x33,
 };
 
+struct ideapad_dytc_priv {
+	enum platform_profile_option current_profile;
+	struct platform_profile_handler pprof;
+	struct mutex mutex; /* protects the DYTC interface */
+	struct ideapad_private *priv;
+};
+
 struct ideapad_rfk_priv {
 	int dev;
 	struct ideapad_private *priv;
@@ -89,11 +126,25 @@ struct ideapad_private {
 	struct platform_device *platform_device;
 	struct input_dev *inputdev;
 	struct backlight_device *blightdev;
+	struct ideapad_dytc_priv *dytc;
 	struct dentry *debug;
 	unsigned long cfg;
-	bool has_hw_rfkill_switch;
-	bool has_touchpad_switch;
 	const char *fnesc_guid;
+	struct {
+		bool conservation_mode    : 1;
+		bool dytc                 : 1;
+		bool fan_mode             : 1;
+		bool fn_lock              : 1;
+		bool hw_rfkill_switch     : 1;
+		bool kbd_bl               : 1;
+		bool touchpad_ctrl_via_ec : 1;
+		bool usb_charging         : 1;
+	} features;
+	struct {
+		bool initialized;
+		struct led_classdev led;
+		unsigned int last_brightness;
+	} kbd_bl;
 };
 
 static bool no_bt_rfkill;
@@ -103,64 +154,82 @@ MODULE_PARM_DESC(no_bt_rfkill, "No rfkill for bluetooth.");
 /*
  * ACPI Helpers
  */
-#define IDEAPAD_EC_TIMEOUT (200) /* in ms */
+#define IDEAPAD_EC_TIMEOUT 200 /* in ms */
 
-static int read_method_int(acpi_handle handle, const char *method, int *val)
+static int eval_int(acpi_handle handle, const char *name, unsigned long *res)
 {
-	acpi_status status;
 	unsigned long long result;
+	acpi_status status;
+
+	status = acpi_evaluate_integer(handle, (char *)name, NULL, &result);
+	if (ACPI_FAILURE(status))
+		return -EIO;
+
+	*res = result;
 
-	status = acpi_evaluate_integer(handle, (char *)method, NULL, &result);
-	if (ACPI_FAILURE(status)) {
-		*val = -1;
-		return -1;
-	}
-	*val = result;
 	return 0;
+}
+
+static int exec_simple_method(acpi_handle handle, const char *name, unsigned long arg)
+{
+	acpi_status status = acpi_execute_simple_method(handle, (char *)name, arg);
 
+	return ACPI_FAILURE(status) ? -EIO : 0;
 }
 
-static int method_gbmd(acpi_handle handle, unsigned long *ret)
+static int eval_gbmd(acpi_handle handle, unsigned long *res)
 {
-	int result, val;
+	return eval_int(handle, "GBMD", res);
+}
 
-	result = read_method_int(handle, "GBMD", &val);
-	*ret = val;
-	return result;
+static int exec_smbc(acpi_handle handle, unsigned long arg)
+{
+	return exec_simple_method(handle, "SMBC", arg);
 }
 
-static int method_int1(acpi_handle handle, char *method, int cmd)
+static int eval_hals(acpi_handle handle, unsigned long *res)
 {
-	acpi_status status;
+	return eval_int(handle, "HALS", res);
+}
 
-	status = acpi_execute_simple_method(handle, method, cmd);
-	return ACPI_FAILURE(status) ? -1 : 0;
+static int exec_sals(acpi_handle handle, unsigned long arg)
+{
+	return exec_simple_method(handle, "SALS", arg);
 }
 
-static int method_vpcr(acpi_handle handle, int cmd, int *ret)
+static int eval_int_with_arg(acpi_handle handle, const char *name, unsigned long arg, unsigned long *res)
 {
-	acpi_status status;
-	unsigned long long result;
 	struct acpi_object_list params;
+	unsigned long long result;
 	union acpi_object in_obj;
+	acpi_status status;
 
 	params.count = 1;
 	params.pointer = &in_obj;
 	in_obj.type = ACPI_TYPE_INTEGER;
-	in_obj.integer.value = cmd;
+	in_obj.integer.value = arg;
+
+	status = acpi_evaluate_integer(handle, (char *)name, &params, &result);
+	if (ACPI_FAILURE(status))
+		return -EIO;
 
-	status = acpi_evaluate_integer(handle, "VPCR", &params, &result);
+	if (res)
+		*res = result;
 
-	if (ACPI_FAILURE(status)) {
-		*ret = -1;
-		return -1;
-	}
-	*ret = result;
 	return 0;
+}
 
+static int eval_dytc(acpi_handle handle, unsigned long cmd, unsigned long *res)
+{
+	return eval_int_with_arg(handle, "DYTC", cmd, res);
 }
 
-static int method_vpcw(acpi_handle handle, int cmd, int data)
+static int eval_vpcr(acpi_handle handle, unsigned long cmd, unsigned long *res)
+{
+	return eval_int_with_arg(handle, "VPCR", cmd, res);
+}
+
+static int eval_vpcw(acpi_handle handle, unsigned long cmd, unsigned long data)
 {
 	struct acpi_object_list params;
 	union acpi_object in_obj[2];
@@ -174,55 +243,68 @@ static int method_vpcw(acpi_handle handle, int cmd, int data)
 	in_obj[1].integer.value = data;
 
 	status = acpi_evaluate_object(handle, "VPCW", &params, NULL);
-	if (status != AE_OK)
-		return -1;
+	if (ACPI_FAILURE(status))
+		return -EIO;
+
 	return 0;
 }
 
-static int read_ec_data(acpi_handle handle, int cmd, unsigned long *data)
+static int read_ec_data(acpi_handle handle, unsigned long cmd, unsigned long *data)
 {
-	int val;
-	unsigned long int end_jiffies;
+	unsigned long end_jiffies, val;
+	int err;
+
+	err = eval_vpcw(handle, 1, cmd);
+	if (err)
+		return err;
 
-	if (method_vpcw(handle, 1, cmd))
-		return -1;
+	end_jiffies = jiffies + msecs_to_jiffies(IDEAPAD_EC_TIMEOUT) + 1;
 
-	for (end_jiffies = jiffies+(HZ)*IDEAPAD_EC_TIMEOUT/1000+1;
-	     time_before(jiffies, end_jiffies);) {
+	while (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;
-		}
+
+		err = eval_vpcr(handle, 1, &val);
+		if (err)
+			return err;
+
+		if (val == 0)
+			return eval_vpcr(handle, 0, data);
 	}
-	pr_err("timeout in %s\n", __func__);
-	return -1;
+
+	acpi_handle_err(handle, "timeout in %s\n", __func__);
+
+	return -ETIMEDOUT;
 }
 
-static int write_ec_cmd(acpi_handle handle, int cmd, unsigned long data)
+static int write_ec_cmd(acpi_handle handle, unsigned long cmd, unsigned long data)
 {
-	int val;
-	unsigned long int end_jiffies;
+	unsigned long end_jiffies, val;
+	int err;
+
+	err = eval_vpcw(handle, 0, data);
+	if (err)
+		return err;
+
+	err = eval_vpcw(handle, 1, cmd);
+	if (err)
+		return err;
 
-	if (method_vpcw(handle, 0, data))
-		return -1;
-	if (method_vpcw(handle, 1, cmd))
-		return -1;
+	end_jiffies = jiffies + msecs_to_jiffies(IDEAPAD_EC_TIMEOUT) + 1;
 
-	for (end_jiffies = jiffies+(HZ)*IDEAPAD_EC_TIMEOUT/1000+1;
-	     time_before(jiffies, end_jiffies);) {
+	while (time_before(jiffies, end_jiffies)) {
 		schedule();
-		if (method_vpcr(handle, 1, &val))
-			return -1;
+
+		err = eval_vpcr(handle, 1, &val);
+		if (err)
+			return err;
+
 		if (val == 0)
 			return 0;
 	}
-	pr_err("timeout in %s\n", __func__);
-	return -1;
+
+	acpi_handle_err(handle, "timeout in %s\n", __func__);
+
+	return -ETIMEDOUT;
 }
 
 /*
@@ -233,44 +315,37 @@ static int debugfs_status_show(struct seq_file *s, void *data)
 	struct ideapad_private *priv = s->private;
 	unsigned long value;
 
-	if (!priv)
-		return -EINVAL;
-
 	if (!read_ec_data(priv->adev->handle, VPCCMD_R_BL_MAX, &value))
-		seq_printf(s, "Backlight max:\t%lu\n", value);
+		seq_printf(s, "Backlight max:  %lu\n", value);
 	if (!read_ec_data(priv->adev->handle, VPCCMD_R_BL, &value))
-		seq_printf(s, "Backlight now:\t%lu\n", value);
+		seq_printf(s, "Backlight now:  %lu\n", value);
 	if (!read_ec_data(priv->adev->handle, VPCCMD_R_BL_POWER, &value))
-		seq_printf(s, "BL power value:\t%s\n", value ? "On" : "Off");
-	seq_printf(s, "=====================\n");
+		seq_printf(s, "BL power value: %s (%lu)\n", value ? "on" : "off", value);
+
+	seq_puts(s, "=====================\n");
 
 	if (!read_ec_data(priv->adev->handle, VPCCMD_R_RF, &value))
-		seq_printf(s, "Radio status:\t%s(%lu)\n",
-			   value ? "On" : "Off", value);
+		seq_printf(s, "Radio status: %s (%lu)\n", value ? "on" : "off", value);
 	if (!read_ec_data(priv->adev->handle, VPCCMD_R_WIFI, &value))
-		seq_printf(s, "Wifi status:\t%s(%lu)\n",
-			   value ? "On" : "Off", value);
+		seq_printf(s, "Wifi status:  %s (%lu)\n", value ? "on" : "off", value);
 	if (!read_ec_data(priv->adev->handle, VPCCMD_R_BT, &value))
-		seq_printf(s, "BT status:\t%s(%lu)\n",
-			   value ? "On" : "Off", value);
+		seq_printf(s, "BT status:    %s (%lu)\n", value ? "on" : "off", value);
 	if (!read_ec_data(priv->adev->handle, VPCCMD_R_3G, &value))
-		seq_printf(s, "3G status:\t%s(%lu)\n",
-			   value ? "On" : "Off", value);
-	seq_printf(s, "=====================\n");
+		seq_printf(s, "3G status:    %s (%lu)\n", value ? "on" : "off", value);
+
+	seq_puts(s, "=====================\n");
 
 	if (!read_ec_data(priv->adev->handle, VPCCMD_R_TOUCHPAD, &value))
-		seq_printf(s, "Touchpad status:%s(%lu)\n",
-			   value ? "On" : "Off", value);
+		seq_printf(s, "Touchpad status: %s (%lu)\n", value ? "on" : "off", value);
 	if (!read_ec_data(priv->adev->handle, VPCCMD_R_CAMERA, &value))
-		seq_printf(s, "Camera status:\t%s(%lu)\n",
-			   value ? "On" : "Off", value);
+		seq_printf(s, "Camera status:   %s (%lu)\n", value ? "on" : "off", value);
+
 	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);
-	}
+	if (!eval_gbmd(priv->adev->handle, &value))
+		seq_printf(s, "GBMD: %#010lx\n", value);
+	if (!eval_hals(priv->adev->handle, &value))
+		seq_printf(s, "HALS: %#010lx\n", value);
 
 	return 0;
 }
@@ -280,39 +355,41 @@ static int debugfs_cfg_show(struct seq_file *s, void *data)
 {
 	struct ideapad_private *priv = s->private;
 
-	if (!priv) {
-		seq_printf(s, "cfg: N/A\n");
-	} else {
-		seq_printf(s, "cfg: 0x%.8lX\n\nCapability: ",
-			   priv->cfg);
-		if (test_bit(CFG_BT_BIT, &priv->cfg))
-			seq_printf(s, "Bluetooth ");
-		if (test_bit(CFG_3G_BIT, &priv->cfg))
-			seq_printf(s, "3G ");
-		if (test_bit(CFG_WIFI_BIT, &priv->cfg))
-			seq_printf(s, "Wireless ");
-		if (test_bit(CFG_CAMERA_BIT, &priv->cfg))
-			seq_printf(s, "Camera ");
-		seq_printf(s, "\nGraphic: ");
-		switch ((priv->cfg)&0x700) {
-		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");
+	seq_printf(s, "_CFG: %#010lx\n\n", priv->cfg);
+
+	seq_puts(s, "Capabilities:");
+	if (test_bit(CFG_CAP_BT_BIT, &priv->cfg))
+		seq_puts(s, " bluetooth");
+	if (test_bit(CFG_CAP_3G_BIT, &priv->cfg))
+		seq_puts(s, " 3G");
+	if (test_bit(CFG_CAP_WIFI_BIT, &priv->cfg))
+		seq_puts(s, " wifi");
+	if (test_bit(CFG_CAP_CAM_BIT, &priv->cfg))
+		seq_puts(s, " camera");
+	if (test_bit(CFG_CAP_TOUCHPAD_BIT, &priv->cfg))
+		seq_puts(s, " touchpad");
+	seq_puts(s, "\n");
+
+	seq_puts(s, "Graphics: ");
+	switch (priv->cfg & 0x700) {
+	case 0x100:
+		seq_puts(s, "Intel");
+		break;
+	case 0x200:
+		seq_puts(s, "ATI");
+		break;
+	case 0x300:
+		seq_puts(s, "Nvidia");
+		break;
+	case 0x400:
+		seq_puts(s, "Intel and ATI");
+		break;
+	case 0x500:
+		seq_puts(s, "Intel and Nvidia");
+		break;
 	}
+	seq_puts(s, "\n");
+
 	return 0;
 }
 DEFINE_SHOW_ATTRIBUTE(debugfs_cfg);
@@ -324,8 +401,8 @@ static void ideapad_debugfs_init(struct ideapad_private *priv)
 	dir = debugfs_create_dir("ideapad", NULL);
 	priv->debug = dir;
 
-	debugfs_create_file("cfg", S_IRUGO, dir, priv, &debugfs_cfg_fops);
-	debugfs_create_file("status", S_IRUGO, dir, priv, &debugfs_status_fops);
+	debugfs_create_file("cfg", 0444, dir, priv, &debugfs_cfg_fops);
+	debugfs_create_file("status", 0444, dir, priv, &debugfs_status_fops);
 }
 
 static void ideapad_debugfs_exit(struct ideapad_private *priv)
@@ -337,209 +414,256 @@ static void ideapad_debugfs_exit(struct ideapad_private *priv)
 /*
  * sysfs
  */
-static ssize_t show_ideapad_cam(struct device *dev,
-				struct device_attribute *attr,
-				char *buf)
+static ssize_t camera_power_show(struct device *dev,
+				 struct device_attribute *attr,
+				 char *buf)
 {
-	unsigned long result;
 	struct ideapad_private *priv = dev_get_drvdata(dev);
+	unsigned long result;
+	int err;
 
-	if (read_ec_data(priv->adev->handle, VPCCMD_R_CAMERA, &result))
-		return sprintf(buf, "-1\n");
-	return sprintf(buf, "%lu\n", result);
+	err = read_ec_data(priv->adev->handle, VPCCMD_R_CAMERA, &result);
+	if (err)
+		return err;
+
+	return sysfs_emit(buf, "%d\n", !!result);
 }
 
-static ssize_t store_ideapad_cam(struct device *dev,
-				 struct device_attribute *attr,
-				 const char *buf, size_t count)
+static ssize_t camera_power_store(struct device *dev,
+				  struct device_attribute *attr,
+				  const char *buf, size_t count)
 {
-	int ret, state;
 	struct ideapad_private *priv = dev_get_drvdata(dev);
+	bool state;
+	int err;
+
+	err = kstrtobool(buf, &state);
+	if (err)
+		return err;
+
+	err = write_ec_cmd(priv->adev->handle, VPCCMD_W_CAMERA, state);
+	if (err)
+		return err;
 
-	if (!count)
-		return 0;
-	if (sscanf(buf, "%i", &state) != 1)
-		return -EINVAL;
-	ret = write_ec_cmd(priv->adev->handle, VPCCMD_W_CAMERA, state);
-	if (ret < 0)
-		return -EIO;
 	return count;
 }
 
-static DEVICE_ATTR(camera_power, 0644, show_ideapad_cam, store_ideapad_cam);
+static DEVICE_ATTR_RW(camera_power);
 
-static ssize_t show_ideapad_fan(struct device *dev,
-				struct device_attribute *attr,
-				char *buf)
+static ssize_t conservation_mode_show(struct device *dev,
+				      struct device_attribute *attr,
+				      char *buf)
 {
-	unsigned long result;
 	struct ideapad_private *priv = dev_get_drvdata(dev);
+	unsigned long result;
+	int err;
+
+	err = eval_gbmd(priv->adev->handle, &result);
+	if (err)
+		return err;
 
-	if (read_ec_data(priv->adev->handle, VPCCMD_R_FAN, &result))
-		return sprintf(buf, "-1\n");
-	return sprintf(buf, "%lu\n", result);
+	return sysfs_emit(buf, "%d\n", !!test_bit(GBMD_CONSERVATION_STATE_BIT, &result));
 }
 
-static ssize_t store_ideapad_fan(struct device *dev,
-				 struct device_attribute *attr,
-				 const char *buf, size_t count)
+static ssize_t conservation_mode_store(struct device *dev,
+				       struct device_attribute *attr,
+				       const char *buf, size_t count)
 {
-	int ret, state;
 	struct ideapad_private *priv = dev_get_drvdata(dev);
+	bool state;
+	int err;
+
+	err = kstrtobool(buf, &state);
+	if (err)
+		return err;
+
+	err = exec_smbc(priv->adev->handle, state ? SMBC_CONSERVATION_ON : SMBC_CONSERVATION_OFF);
+	if (err)
+		return err;
 
-	if (!count)
-		return 0;
-	if (sscanf(buf, "%i", &state) != 1)
-		return -EINVAL;
-	if (state < 0 || state > 4 || state == 3)
-		return -EINVAL;
-	ret = write_ec_cmd(priv->adev->handle, VPCCMD_W_FAN, state);
-	if (ret < 0)
-		return -EIO;
 	return count;
 }
 
-static DEVICE_ATTR(fan_mode, 0644, show_ideapad_fan, store_ideapad_fan);
+static DEVICE_ATTR_RW(conservation_mode);
 
-static ssize_t touchpad_show(struct device *dev,
+static ssize_t fan_mode_show(struct device *dev,
 			     struct device_attribute *attr,
 			     char *buf)
 {
 	struct ideapad_private *priv = dev_get_drvdata(dev);
 	unsigned long result;
+	int err;
+
+	err = read_ec_data(priv->adev->handle, VPCCMD_R_FAN, &result);
+	if (err)
+		return err;
 
-	if (read_ec_data(priv->adev->handle, VPCCMD_R_TOUCHPAD, &result))
-		return sprintf(buf, "-1\n");
-	return sprintf(buf, "%lu\n", result);
+	return sysfs_emit(buf, "%lu\n", result);
 }
 
-/* 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)
+static ssize_t fan_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;
+	unsigned int state;
+	int err;
 
-	ret = kstrtobool(buf, &state);
-	if (ret)
-		return ret;
+	err = kstrtouint(buf, 0, &state);
+	if (err)
+		return err;
+
+	if (state > 4 || state == 3)
+		return -EINVAL;
+
+	err = write_ec_cmd(priv->adev->handle, VPCCMD_W_FAN, state);
+	if (err)
+		return err;
 
-	ret = write_ec_cmd(priv->adev->handle, VPCCMD_W_TOUCHPAD, state);
-	if (ret < 0)
-		return -EIO;
 	return count;
 }
 
-static DEVICE_ATTR_RO(touchpad);
+static DEVICE_ATTR_RW(fan_mode);
 
-static ssize_t conservation_mode_show(struct device *dev,
-				struct device_attribute *attr,
-				char *buf)
+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;
+	unsigned long hals;
+	int err;
 
-	if (method_gbmd(priv->adev->handle, &result))
-		return sprintf(buf, "-1\n");
-	return sprintf(buf, "%u\n", test_bit(BM_CONSERVATION_BIT, &result));
+	err = eval_hals(priv->adev->handle, &hals);
+	if (err)
+		return err;
+
+	return sysfs_emit(buf, "%d\n", !!test_bit(HALS_FNLOCK_STATE_BIT, &hals));
 }
 
-static ssize_t conservation_mode_store(struct device *dev,
-				 struct device_attribute *attr,
-				 const char *buf, size_t count)
+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;
+	int err;
 
-	ret = kstrtobool(buf, &state);
-	if (ret)
-		return ret;
+	err = kstrtobool(buf, &state);
+	if (err)
+		return err;
+
+	err = exec_sals(priv->adev->handle, state ? SALS_FNLOCK_ON : SALS_FNLOCK_OFF);
+	if (err)
+		return err;
 
-	ret = method_int1(priv->adev->handle, "SBMC", state ?
-					      BMCMD_CONSERVATION_ON :
-					      BMCMD_CONSERVATION_OFF);
-	if (ret < 0)
-		return -EIO;
 	return count;
 }
 
-static DEVICE_ATTR_RW(conservation_mode);
+static DEVICE_ATTR_RW(fn_lock);
 
-static ssize_t fn_lock_show(struct device *dev,
-			    struct device_attribute *attr,
-			    char *buf)
+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;
-	int hals;
-	int fail = read_method_int(priv->adev->handle, "HALS", &hals);
+	int err;
 
-	if (fail)
-		return sprintf(buf, "-1\n");
+	err = read_ec_data(priv->adev->handle, VPCCMD_R_TOUCHPAD, &result);
+	if (err)
+		return err;
 
-	result = hals;
-	return sprintf(buf, "%u\n", test_bit(HA_FNLOCK_BIT, &result));
+	return sysfs_emit(buf, "%d\n", !!result);
 }
 
-static ssize_t fn_lock_store(struct device *dev,
-			     struct device_attribute *attr,
-			     const char *buf, size_t count)
+static ssize_t touchpad_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;
+	int err;
 
-	ret = kstrtobool(buf, &state);
-	if (ret)
-		return ret;
+	err = kstrtobool(buf, &state);
+	if (err)
+		return err;
+
+	err = write_ec_cmd(priv->adev->handle, VPCCMD_W_TOUCHPAD, state);
+	if (err)
+		return err;
 
-	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);
+static DEVICE_ATTR_RW(touchpad);
+
+static ssize_t usb_charging_show(struct device *dev,
+				 struct device_attribute *attr,
+				 char *buf)
+{
+	struct ideapad_private *priv = dev_get_drvdata(dev);
+	unsigned long hals;
+	int err;
+
+	err = eval_hals(priv->adev->handle, &hals);
+	if (err)
+		return err;
+
+	return sysfs_emit(buf, "%d\n", !!test_bit(HALS_USB_CHARGING_STATE_BIT, &hals));
+}
 
+static ssize_t usb_charging_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 err;
+
+	err = kstrtobool(buf, &state);
+	if (err)
+		return err;
+
+	err = exec_sals(priv->adev->handle, state ? SALS_USB_CHARGING_ON : SALS_USB_CHARGING_OFF);
+	if (err)
+		return err;
+
+	return count;
+}
+
+static DEVICE_ATTR_RW(usb_charging);
 
 static struct attribute *ideapad_attributes[] = {
 	&dev_attr_camera_power.attr,
-	&dev_attr_fan_mode.attr,
-	&dev_attr_touchpad.attr,
 	&dev_attr_conservation_mode.attr,
+	&dev_attr_fan_mode.attr,
 	&dev_attr_fn_lock.attr,
+	&dev_attr_touchpad.attr,
+	&dev_attr_usb_charging.attr,
 	NULL
 };
 
 static umode_t ideapad_is_visible(struct kobject *kobj,
-				 struct attribute *attr,
-				 int idx)
+				  struct attribute *attr,
+				  int idx)
 {
-	struct device *dev = container_of(kobj, struct device, kobj);
+	struct device *dev = kobj_to_dev(kobj);
 	struct ideapad_private *priv = dev_get_drvdata(dev);
-	bool supported;
+	bool supported = true;
 
 	if (attr == &dev_attr_camera_power.attr)
-		supported = test_bit(CFG_CAMERA_BIT, &(priv->cfg));
-	else if (attr == &dev_attr_fan_mode.attr) {
-		unsigned long value;
-		supported = !read_ec_data(priv->adev->handle, VPCCMD_R_FAN,
-					  &value);
-	} else if (attr == &dev_attr_conservation_mode.attr) {
-		supported = acpi_has_method(priv->adev->handle, "GBMD") &&
-			    acpi_has_method(priv->adev->handle, "SBMC");
-	} else if (attr == &dev_attr_fn_lock.attr) {
-		supported = acpi_has_method(priv->adev->handle, "HALS") &&
-			acpi_has_method(priv->adev->handle, "SALS");
-	} else if (attr == &dev_attr_touchpad.attr)
-		supported = priv->has_touchpad_switch;
-	else
-		supported = true;
+		supported = test_bit(CFG_CAP_CAM_BIT, &priv->cfg);
+	else if (attr == &dev_attr_conservation_mode.attr)
+		supported = priv->features.conservation_mode;
+	else if (attr == &dev_attr_fan_mode.attr)
+		supported = priv->features.fan_mode;
+	else if (attr == &dev_attr_fn_lock.attr)
+		supported = priv->features.fn_lock;
+	else if (attr == &dev_attr_touchpad.attr)
+		supported = priv->features.touchpad_ctrl_via_ec &&
+			    test_bit(CFG_CAP_TOUCHPAD_BIT, &priv->cfg);
+	else if (attr == &dev_attr_usb_charging.attr)
+		supported = priv->features.usb_charging;
 
 	return supported ? attr->mode : 0;
 }
@@ -550,6 +674,265 @@ static const struct attribute_group ideapad_attribute_group = {
 };
 
 /*
+ * DYTC Platform profile
+ */
+#define DYTC_CMD_QUERY        0 /* To get DYTC status - enable/revision */
+#define DYTC_CMD_SET          1 /* To enable/disable IC function mode */
+#define DYTC_CMD_GET          2 /* To get current IC function and mode */
+#define DYTC_CMD_RESET    0x1ff /* To reset back to default */
+
+#define DYTC_QUERY_ENABLE_BIT 8  /* Bit        8 - 0 = disabled, 1 = enabled */
+#define DYTC_QUERY_SUBREV_BIT 16 /* Bits 16 - 27 - sub revision */
+#define DYTC_QUERY_REV_BIT    28 /* Bits 28 - 31 - revision */
+
+#define DYTC_GET_FUNCTION_BIT 8  /* Bits  8-11 - function setting */
+#define DYTC_GET_MODE_BIT     12 /* Bits 12-15 - mode setting */
+
+#define DYTC_SET_FUNCTION_BIT 12 /* Bits 12-15 - function setting */
+#define DYTC_SET_MODE_BIT     16 /* Bits 16-19 - mode setting */
+#define DYTC_SET_VALID_BIT    20 /* Bit     20 - 1 = on, 0 = off */
+
+#define DYTC_FUNCTION_STD     0  /* Function = 0, standard mode */
+#define DYTC_FUNCTION_CQL     1  /* Function = 1, lap mode */
+#define DYTC_FUNCTION_MMC     11 /* Function = 11, desk mode */
+
+#define DYTC_MODE_PERFORM     2  /* High power mode aka performance */
+#define DYTC_MODE_LOW_POWER       3  /* Low power mode aka quiet */
+#define DYTC_MODE_BALANCE   0xF  /* Default mode aka balanced */
+
+#define DYTC_SET_COMMAND(function, mode, on) \
+	(DYTC_CMD_SET | (function) << DYTC_SET_FUNCTION_BIT | \
+	 (mode) << DYTC_SET_MODE_BIT | \
+	 (on) << DYTC_SET_VALID_BIT)
+
+#define DYTC_DISABLE_CQL DYTC_SET_COMMAND(DYTC_FUNCTION_CQL, DYTC_MODE_BALANCE, 0)
+
+#define DYTC_ENABLE_CQL DYTC_SET_COMMAND(DYTC_FUNCTION_CQL, DYTC_MODE_BALANCE, 1)
+
+static int convert_dytc_to_profile(int dytcmode, enum platform_profile_option *profile)
+{
+	switch (dytcmode) {
+	case DYTC_MODE_LOW_POWER:
+		*profile = PLATFORM_PROFILE_LOW_POWER;
+		break;
+	case DYTC_MODE_BALANCE:
+		*profile =  PLATFORM_PROFILE_BALANCED;
+		break;
+	case DYTC_MODE_PERFORM:
+		*profile =  PLATFORM_PROFILE_PERFORMANCE;
+		break;
+	default: /* Unknown mode */
+		return -EINVAL;
+	}
+
+	return 0;
+}
+
+static int convert_profile_to_dytc(enum platform_profile_option profile, int *perfmode)
+{
+	switch (profile) {
+	case PLATFORM_PROFILE_LOW_POWER:
+		*perfmode = DYTC_MODE_LOW_POWER;
+		break;
+	case PLATFORM_PROFILE_BALANCED:
+		*perfmode = DYTC_MODE_BALANCE;
+		break;
+	case PLATFORM_PROFILE_PERFORMANCE:
+		*perfmode = DYTC_MODE_PERFORM;
+		break;
+	default: /* Unknown profile */
+		return -EOPNOTSUPP;
+	}
+
+	return 0;
+}
+
+/*
+ * dytc_profile_get: Function to register with platform_profile
+ * handler. Returns current platform profile.
+ */
+static int dytc_profile_get(struct platform_profile_handler *pprof,
+			    enum platform_profile_option *profile)
+{
+	struct ideapad_dytc_priv *dytc = container_of(pprof, struct ideapad_dytc_priv, pprof);
+
+	*profile = dytc->current_profile;
+	return 0;
+}
+
+/*
+ * Helper function - check if we are in CQL mode and if we are
+ *  - disable CQL,
+ *  - run the command
+ *  - enable CQL
+ *  If not in CQL mode, just run the command
+ */
+static int dytc_cql_command(struct ideapad_private *priv, unsigned long cmd,
+			    unsigned long *output)
+{
+	int err, cmd_err, cur_funcmode;
+
+	/* Determine if we are in CQL mode. This alters the commands we do */
+	err = eval_dytc(priv->adev->handle, DYTC_CMD_GET, output);
+	if (err)
+		return err;
+
+	cur_funcmode = (*output >> DYTC_GET_FUNCTION_BIT) & 0xF;
+	/* Check if we're OK to return immediately */
+	if (cmd == DYTC_CMD_GET && cur_funcmode != DYTC_FUNCTION_CQL)
+		return 0;
+
+	if (cur_funcmode == DYTC_FUNCTION_CQL) {
+		err = eval_dytc(priv->adev->handle, DYTC_DISABLE_CQL, NULL);
+		if (err)
+			return err;
+	}
+
+	cmd_err = eval_dytc(priv->adev->handle, cmd, output);
+	/* Check return condition after we've restored CQL state */
+
+	if (cur_funcmode == DYTC_FUNCTION_CQL) {
+		err = eval_dytc(priv->adev->handle, DYTC_ENABLE_CQL, NULL);
+		if (err)
+			return err;
+	}
+
+	return cmd_err;
+}
+
+/*
+ * dytc_profile_set: Function to register with platform_profile
+ * handler. Sets current platform profile.
+ */
+static int dytc_profile_set(struct platform_profile_handler *pprof,
+			    enum platform_profile_option profile)
+{
+	struct ideapad_dytc_priv *dytc = container_of(pprof, struct ideapad_dytc_priv, pprof);
+	struct ideapad_private *priv = dytc->priv;
+	int err;
+
+	err = mutex_lock_interruptible(&dytc->mutex);
+	if (err)
+		return err;
+
+	if (profile == PLATFORM_PROFILE_BALANCED) {
+		/* To get back to balanced mode we just issue a reset command */
+		err = eval_dytc(priv->adev->handle, DYTC_CMD_RESET, NULL);
+		if (err)
+			goto unlock;
+	} else {
+		int perfmode;
+
+		err = convert_profile_to_dytc(profile, &perfmode);
+		if (err)
+			goto unlock;
+
+		/* Determine if we are in CQL mode. This alters the commands we do */
+		err = dytc_cql_command(priv, DYTC_SET_COMMAND(DYTC_FUNCTION_MMC, perfmode, 1),
+				       NULL);
+		if (err)
+			goto unlock;
+	}
+
+	/* Success - update current profile */
+	dytc->current_profile = profile;
+
+unlock:
+	mutex_unlock(&dytc->mutex);
+
+	return err;
+}
+
+static void dytc_profile_refresh(struct ideapad_private *priv)
+{
+	enum platform_profile_option profile;
+	unsigned long output;
+	int err, perfmode;
+
+	mutex_lock(&priv->dytc->mutex);
+	err = dytc_cql_command(priv, DYTC_CMD_GET, &output);
+	mutex_unlock(&priv->dytc->mutex);
+	if (err)
+		return;
+
+	perfmode = (output >> DYTC_GET_MODE_BIT) & 0xF;
+
+	if (convert_dytc_to_profile(perfmode, &profile))
+		return;
+
+	if (profile != priv->dytc->current_profile) {
+		priv->dytc->current_profile = profile;
+		platform_profile_notify();
+	}
+}
+
+static int ideapad_dytc_profile_init(struct ideapad_private *priv)
+{
+	int err, dytc_version;
+	unsigned long output;
+
+	if (!priv->features.dytc)
+		return -ENODEV;
+
+	err = eval_dytc(priv->adev->handle, DYTC_CMD_QUERY, &output);
+	/* For all other errors we can flag the failure */
+	if (err)
+		return err;
+
+	/* Check DYTC is enabled and supports mode setting */
+	if (!test_bit(DYTC_QUERY_ENABLE_BIT, &output))
+		return -ENODEV;
+
+	dytc_version = (output >> DYTC_QUERY_REV_BIT) & 0xF;
+	if (dytc_version < 5)
+		return -ENODEV;
+
+	priv->dytc = kzalloc(sizeof(*priv->dytc), GFP_KERNEL);
+	if (!priv->dytc)
+		return -ENOMEM;
+
+	mutex_init(&priv->dytc->mutex);
+
+	priv->dytc->priv = priv;
+	priv->dytc->pprof.profile_get = dytc_profile_get;
+	priv->dytc->pprof.profile_set = dytc_profile_set;
+
+	/* Setup supported modes */
+	set_bit(PLATFORM_PROFILE_LOW_POWER, priv->dytc->pprof.choices);
+	set_bit(PLATFORM_PROFILE_BALANCED, priv->dytc->pprof.choices);
+	set_bit(PLATFORM_PROFILE_PERFORMANCE, priv->dytc->pprof.choices);
+
+	/* Create platform_profile structure and register */
+	err = platform_profile_register(&priv->dytc->pprof);
+	if (err)
+		goto pp_reg_failed;
+
+	/* Ensure initial values are correct */
+	dytc_profile_refresh(priv);
+
+	return 0;
+
+pp_reg_failed:
+	mutex_destroy(&priv->dytc->mutex);
+	kfree(priv->dytc);
+	priv->dytc = NULL;
+
+	return err;
+}
+
+static void ideapad_dytc_profile_exit(struct ideapad_private *priv)
+{
+	if (!priv->dytc)
+		return;
+
+	platform_profile_remove();
+	mutex_destroy(&priv->dytc->mutex);
+	kfree(priv->dytc);
+
+	priv->dytc = NULL;
+}
+
+/*
  * Rfkill
  */
 struct ideapad_rfk_data {
@@ -560,9 +943,9 @@ struct ideapad_rfk_data {
 };
 
 static const struct ideapad_rfk_data ideapad_rfk_data[] = {
-	{ "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 },
+	{ "ideapad_wlan",      CFG_CAP_WIFI_BIT, VPCCMD_W_WIFI, RFKILL_TYPE_WLAN },
+	{ "ideapad_bluetooth", CFG_CAP_BT_BIT,   VPCCMD_W_BT,   RFKILL_TYPE_BLUETOOTH },
+	{ "ideapad_3g",        CFG_CAP_3G_BIT,   VPCCMD_W_3G,   RFKILL_TYPE_WWAN },
 };
 
 static int ideapad_rfk_set(void *data, bool blocked)
@@ -582,7 +965,7 @@ static void ideapad_sync_rfk_state(struct ideapad_private *priv)
 	unsigned long hw_blocked = 0;
 	int i;
 
-	if (priv->has_hw_rfkill_switch) {
+	if (priv->features.hw_rfkill_switch) {
 		if (read_ec_data(priv->adev->handle, VPCCMD_R_RF, &hw_blocked))
 			return;
 		hw_blocked = !hw_blocked;
@@ -595,16 +978,15 @@ static void ideapad_sync_rfk_state(struct ideapad_private *priv)
 
 static int ideapad_register_rfkill(struct ideapad_private *priv, int dev)
 {
-	int ret;
-	unsigned long sw_blocked;
+	unsigned long rf_enabled;
+	int err;
 
-	if (no_bt_rfkill &&
-	    (ideapad_rfk_data[dev].type == RFKILL_TYPE_BLUETOOTH)) {
+	if (no_bt_rfkill && ideapad_rfk_data[dev].type == RFKILL_TYPE_BLUETOOTH) {
 		/* Force to enable bluetooth when no_bt_rfkill=1 */
-		write_ec_cmd(priv->adev->handle,
-			     ideapad_rfk_data[dev].opcode, 1);
+		write_ec_cmd(priv->adev->handle, ideapad_rfk_data[dev].opcode, 1);
 		return 0;
 	}
+
 	priv->rfk_priv[dev].dev = dev;
 	priv->rfk_priv[dev].priv = priv;
 
@@ -616,20 +998,17 @@ static int ideapad_register_rfkill(struct ideapad_private *priv, int dev)
 	if (!priv->rfk[dev])
 		return -ENOMEM;
 
-	if (read_ec_data(priv->adev->handle, ideapad_rfk_data[dev].opcode-1,
-			 &sw_blocked)) {
-		rfkill_init_sw_state(priv->rfk[dev], 0);
-	} else {
-		sw_blocked = !sw_blocked;
-		rfkill_init_sw_state(priv->rfk[dev], sw_blocked);
-	}
+	err = read_ec_data(priv->adev->handle, ideapad_rfk_data[dev].opcode - 1, &rf_enabled);
+	if (err)
+		rf_enabled = 1;
+
+	rfkill_init_sw_state(priv->rfk[dev], !rf_enabled);
 
-	ret = rfkill_register(priv->rfk[dev]);
-	if (ret) {
+	err = rfkill_register(priv->rfk[dev]);
+	if (err)
 		rfkill_destroy(priv->rfk[dev]);
-		return ret;
-	}
-	return 0;
+
+	return err;
 }
 
 static void ideapad_unregister_rfkill(struct ideapad_private *priv, int dev)
@@ -646,40 +1025,39 @@ static void ideapad_unregister_rfkill(struct ideapad_private *priv, int dev)
  */
 static int ideapad_sysfs_init(struct ideapad_private *priv)
 {
-	return sysfs_create_group(&priv->platform_device->dev.kobj,
-				    &ideapad_attribute_group);
+	return device_add_group(&priv->platform_device->dev,
+				&ideapad_attribute_group);
 }
 
 static void ideapad_sysfs_exit(struct ideapad_private *priv)
 {
-	sysfs_remove_group(&priv->platform_device->dev.kobj,
-			   &ideapad_attribute_group);
+	device_remove_group(&priv->platform_device->dev,
+			    &ideapad_attribute_group);
 }
 
 /*
  * input device
  */
 static const struct key_entry ideapad_keymap[] = {
-	{ KE_KEY, 6,  { KEY_SWITCHVIDEOMODE } },
-	{ KE_KEY, 7,  { KEY_CAMERA } },
-	{ KE_KEY, 8,  { KEY_MICMUTE } },
-	{ KE_KEY, 11, { KEY_F16 } },
-	{ KE_KEY, 13, { KEY_WLAN } },
-	{ KE_KEY, 16, { KEY_PROG1 } },
-	{ KE_KEY, 17, { KEY_PROG2 } },
-	{ KE_KEY, 64, { KEY_PROG3 } },
-	{ KE_KEY, 65, { KEY_PROG4 } },
-	{ KE_KEY, 66, { KEY_TOUCHPAD_OFF } },
-	{ KE_KEY, 67, { KEY_TOUCHPAD_ON } },
+	{ KE_KEY,   6, { KEY_SWITCHVIDEOMODE } },
+	{ KE_KEY,   7, { KEY_CAMERA } },
+	{ KE_KEY,   8, { KEY_MICMUTE } },
+	{ KE_KEY,  11, { KEY_F16 } },
+	{ KE_KEY,  13, { KEY_WLAN } },
+	{ KE_KEY,  16, { KEY_PROG1 } },
+	{ KE_KEY,  17, { KEY_PROG2 } },
+	{ KE_KEY,  64, { KEY_PROG3 } },
+	{ KE_KEY,  65, { KEY_PROG4 } },
+	{ KE_KEY,  66, { KEY_TOUCHPAD_OFF } },
+	{ KE_KEY,  67, { KEY_TOUCHPAD_ON } },
 	{ KE_KEY, 128, { KEY_ESC } },
-
-	{ KE_END, 0 },
+	{ KE_END },
 };
 
 static int ideapad_input_init(struct ideapad_private *priv)
 {
 	struct input_dev *inputdev;
-	int error;
+	int err;
 
 	inputdev = input_allocate_device();
 	if (!inputdev)
@@ -690,24 +1068,28 @@ static int ideapad_input_init(struct ideapad_private *priv)
 	inputdev->id.bustype = BUS_HOST;
 	inputdev->dev.parent = &priv->platform_device->dev;
 
-	error = sparse_keymap_setup(inputdev, ideapad_keymap, NULL);
-	if (error) {
-		pr_err("Unable to setup input device keymap\n");
+	err = sparse_keymap_setup(inputdev, ideapad_keymap, NULL);
+	if (err) {
+		dev_err(&priv->platform_device->dev,
+			"Could not set up input device keymap: %d\n", err);
 		goto err_free_dev;
 	}
 
-	error = input_register_device(inputdev);
-	if (error) {
-		pr_err("Unable to register input device\n");
+	err = input_register_device(inputdev);
+	if (err) {
+		dev_err(&priv->platform_device->dev,
+			"Could not register input device: %d\n", err);
 		goto err_free_dev;
 	}
 
 	priv->inputdev = inputdev;
+
 	return 0;
 
 err_free_dev:
 	input_free_device(inputdev);
-	return error;
+
+	return err;
 }
 
 static void ideapad_input_exit(struct ideapad_private *priv)
@@ -728,6 +1110,7 @@ static void ideapad_input_novokey(struct ideapad_private *priv)
 
 	if (read_ec_data(priv->adev->handle, VPCCMD_R_NOVO, &long_pressed))
 		return;
+
 	if (long_pressed)
 		ideapad_input_report(priv, 17);
 	else
@@ -738,24 +1121,24 @@ static void ideapad_check_special_buttons(struct ideapad_private *priv)
 {
 	unsigned long bit, value;
 
-	read_ec_data(priv->adev->handle, VPCCMD_R_SPECIAL_BUTTONS, &value);
-
-	for (bit = 0; bit < 16; bit++) {
-		if (test_bit(bit, &value)) {
-			switch (bit) {
-			case 0:	/* Z580 */
-			case 6:	/* Z570 */
-				/* Thermal Management button */
-				ideapad_input_report(priv, 65);
-				break;
-			case 1:
-				/* OneKey Theater button */
-				ideapad_input_report(priv, 64);
-				break;
-			default:
-				pr_info("Unknown special button: %lu\n", bit);
-				break;
-			}
+	if (read_ec_data(priv->adev->handle, VPCCMD_R_SPECIAL_BUTTONS, &value))
+		return;
+
+	for_each_set_bit (bit, &value, 16) {
+		switch (bit) {
+		case 6:	/* Z570 */
+		case 0:	/* Z580 */
+			/* Thermal Management button */
+			ideapad_input_report(priv, 65);
+			break;
+		case 1:
+			/* OneKey Theater button */
+			ideapad_input_report(priv, 64);
+			break;
+		default:
+			dev_info(&priv->platform_device->dev,
+				 "Unknown special button: %lu\n", bit);
+			break;
 		}
 	}
 }
@@ -767,28 +1150,29 @@ static int ideapad_backlight_get_brightness(struct backlight_device *blightdev)
 {
 	struct ideapad_private *priv = bl_get_data(blightdev);
 	unsigned long now;
+	int err;
 
-	if (!priv)
-		return -EINVAL;
+	err = read_ec_data(priv->adev->handle, VPCCMD_R_BL, &now);
+	if (err)
+		return err;
 
-	if (read_ec_data(priv->adev->handle, VPCCMD_R_BL, &now))
-		return -EIO;
 	return now;
 }
 
 static int ideapad_backlight_update_status(struct backlight_device *blightdev)
 {
 	struct ideapad_private *priv = bl_get_data(blightdev);
+	int err;
 
-	if (!priv)
-		return -EINVAL;
+	err = write_ec_cmd(priv->adev->handle, VPCCMD_W_BL,
+			   blightdev->props.brightness);
+	if (err)
+		return err;
 
-	if (write_ec_cmd(priv->adev->handle, VPCCMD_W_BL,
-			 blightdev->props.brightness))
-		return -EIO;
-	if (write_ec_cmd(priv->adev->handle, VPCCMD_W_BL_POWER,
-			 blightdev->props.power == FB_BLANK_POWERDOWN ? 0 : 1))
-		return -EIO;
+	err = write_ec_cmd(priv->adev->handle, VPCCMD_W_BL_POWER,
+			   blightdev->props.power != FB_BLANK_POWERDOWN);
+	if (err)
+		return err;
 
 	return 0;
 }
@@ -803,30 +1187,41 @@ static int ideapad_backlight_init(struct ideapad_private *priv)
 	struct backlight_device *blightdev;
 	struct backlight_properties props;
 	unsigned long max, now, power;
+	int err;
 
-	if (read_ec_data(priv->adev->handle, VPCCMD_R_BL_MAX, &max))
-		return -EIO;
-	if (read_ec_data(priv->adev->handle, VPCCMD_R_BL, &now))
-		return -EIO;
-	if (read_ec_data(priv->adev->handle, VPCCMD_R_BL_POWER, &power))
-		return -EIO;
+	err = read_ec_data(priv->adev->handle, VPCCMD_R_BL_MAX, &max);
+	if (err)
+		return err;
+
+	err = read_ec_data(priv->adev->handle, VPCCMD_R_BL, &now);
+	if (err)
+		return err;
+
+	err = read_ec_data(priv->adev->handle, VPCCMD_R_BL_POWER, &power);
+	if (err)
+		return err;
+
+	memset(&props, 0, sizeof(props));
 
-	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);
+		err = PTR_ERR(blightdev);
+		dev_err(&priv->platform_device->dev,
+			"Could not register backlight device: %d\n", err);
+		return err;
 	}
 
 	priv->blightdev = blightdev;
 	blightdev->props.brightness = now;
 	blightdev->props.power = power ? FB_BLANK_UNBLANK : FB_BLANK_POWERDOWN;
+
 	backlight_update_status(blightdev);
 
 	return 0;
@@ -840,13 +1235,15 @@ static void ideapad_backlight_exit(struct ideapad_private *priv)
 
 static void ideapad_backlight_notify_power(struct ideapad_private *priv)
 {
-	unsigned long power;
 	struct backlight_device *blightdev = priv->blightdev;
+	unsigned long power;
 
 	if (!blightdev)
 		return;
+
 	if (read_ec_data(priv->adev->handle, VPCCMD_R_BL_POWER, &power))
 		return;
+
 	blightdev->props.power = power ? FB_BLANK_UNBLANK : FB_BLANK_POWERDOWN;
 }
 
@@ -855,12 +1252,112 @@ 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) {
+	if (!priv->blightdev)
 		read_ec_data(priv->adev->handle, VPCCMD_R_BL, &now);
+	else
+		backlight_force_update(priv->blightdev, BACKLIGHT_UPDATE_HOTKEY);
+}
+
+/*
+ * keyboard backlight
+ */
+static int ideapad_kbd_bl_brightness_get(struct ideapad_private *priv)
+{
+	unsigned long hals;
+	int err;
+
+	err = eval_hals(priv->adev->handle, &hals);
+	if (err)
+		return err;
+
+	return !!test_bit(HALS_KBD_BL_STATE_BIT, &hals);
+}
+
+static enum led_brightness ideapad_kbd_bl_led_cdev_brightness_get(struct led_classdev *led_cdev)
+{
+	struct ideapad_private *priv = container_of(led_cdev, struct ideapad_private, kbd_bl.led);
+
+	return ideapad_kbd_bl_brightness_get(priv);
+}
+
+static int ideapad_kbd_bl_brightness_set(struct ideapad_private *priv, unsigned int brightness)
+{
+	int err = exec_sals(priv->adev->handle, brightness ? SALS_KBD_BL_ON : SALS_KBD_BL_OFF);
+
+	if (err)
+		return err;
+
+	priv->kbd_bl.last_brightness = brightness;
+
+	return 0;
+}
+
+static int ideapad_kbd_bl_led_cdev_brightness_set(struct led_classdev *led_cdev,
+						  enum led_brightness brightness)
+{
+	struct ideapad_private *priv = container_of(led_cdev, struct ideapad_private, kbd_bl.led);
+
+	return ideapad_kbd_bl_brightness_set(priv, brightness);
+}
+
+static void ideapad_kbd_bl_notify(struct ideapad_private *priv)
+{
+	int brightness;
+
+	if (!priv->kbd_bl.initialized)
 		return;
-	}
 
-	backlight_force_update(priv->blightdev, BACKLIGHT_UPDATE_HOTKEY);
+	brightness = ideapad_kbd_bl_brightness_get(priv);
+	if (brightness < 0)
+		return;
+
+	if (brightness == priv->kbd_bl.last_brightness)
+		return;
+
+	priv->kbd_bl.last_brightness = brightness;
+
+	led_classdev_notify_brightness_hw_changed(&priv->kbd_bl.led, brightness);
+}
+
+static int ideapad_kbd_bl_init(struct ideapad_private *priv)
+{
+	int brightness, err;
+
+	if (!priv->features.kbd_bl)
+		return -ENODEV;
+
+	if (WARN_ON(priv->kbd_bl.initialized))
+		return -EEXIST;
+
+	brightness = ideapad_kbd_bl_brightness_get(priv);
+	if (brightness < 0)
+		return brightness;
+
+	priv->kbd_bl.last_brightness = brightness;
+
+	priv->kbd_bl.led.name                    = "platform::" LED_FUNCTION_KBD_BACKLIGHT;
+	priv->kbd_bl.led.max_brightness          = 1;
+	priv->kbd_bl.led.brightness_get          = ideapad_kbd_bl_led_cdev_brightness_get;
+	priv->kbd_bl.led.brightness_set_blocking = ideapad_kbd_bl_led_cdev_brightness_set;
+	priv->kbd_bl.led.flags                   = LED_BRIGHT_HW_CHANGED;
+
+	err = led_classdev_register(&priv->platform_device->dev, &priv->kbd_bl.led);
+	if (err)
+		return err;
+
+	priv->kbd_bl.initialized = true;
+
+	return 0;
+}
+
+static void ideapad_kbd_bl_exit(struct ideapad_private *priv)
+{
+	if (!priv->kbd_bl.initialized)
+		return;
+
+	priv->kbd_bl.initialized = false;
+
+	led_classdev_unregister(&priv->kbd_bl.led);
 }
 
 /*
@@ -870,71 +1367,77 @@ static void ideapad_sync_touchpad_state(struct ideapad_private *priv)
 {
 	unsigned long value;
 
-	if (!priv->has_touchpad_switch)
+	if (!priv->features.touchpad_ctrl_via_ec)
 		return;
 
 	/* Without reading from EC touchpad LED doesn't switch state */
 	if (!read_ec_data(priv->adev->handle, VPCCMD_R_TOUCHPAD, &value)) {
-		/* Some IdeaPads don't really turn off touchpad - they only
+		unsigned char param;
+		/*
+		 * 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);
+		 * KEY_TOUCHPAD_ON to not to get out of sync with LED
+		 */
+		i8042_command(&param, value ? I8042_CMD_AUX_ENABLE : I8042_CMD_AUX_DISABLE);
 		ideapad_input_report(priv, value ? 67 : 66);
+		sysfs_notify(&priv->platform_device->dev.kobj, NULL, "touchpad");
 	}
 }
 
 static void ideapad_acpi_notify(acpi_handle handle, u32 event, void *data)
 {
 	struct ideapad_private *priv = data;
-	unsigned long vpc1, vpc2, vpc_bit;
+	unsigned long vpc1, vpc2, 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:
-			case 8:
-			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;
-			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;
-			default:
-				pr_info("Unknown event: %lu\n", vpc_bit);
-			}
+
+	for_each_set_bit (bit, &vpc1, 16) {
+		switch (bit) {
+		case 13:
+		case 11:
+		case 8:
+		case 7:
+		case 6:
+			ideapad_input_report(priv, bit);
+			break;
+		case 9:
+			ideapad_sync_rfk_state(priv);
+			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 1:
+			/*
+			 * Some IdeaPads report event 1 every ~20
+			 * seconds while on battery power; some
+			 * report this when changing to/from tablet
+			 * mode; some report this when the keyboard
+			 * backlight has changed.
+			 */
+			ideapad_kbd_bl_notify(priv);
+			break;
+		case 0:
+			ideapad_check_special_buttons(priv);
+			break;
+		default:
+			dev_info(&priv->platform_device->dev,
+				 "Unknown event: %lu\n", bit);
 		}
 	}
 }
@@ -942,12 +1445,15 @@ static void ideapad_acpi_notify(acpi_handle handle, u32 event, void *data)
 #if IS_ENABLED(CONFIG_ACPI_WMI)
 static void ideapad_wmi_notify(u32 value, void *context)
 {
+	struct ideapad_private *priv = context;
+
 	switch (value) {
 	case 128:
-		ideapad_input_report(context, value);
+		ideapad_input_report(priv, value);
 		break;
 	default:
-		pr_info("Unknown WMI event %u\n", value);
+		dev_info(&priv->platform_device->dev,
+			 "Unknown WMI event: %u\n", value);
 	}
 }
 #endif
@@ -971,18 +1477,52 @@ static const struct dmi_system_id hw_rfkill_list[] = {
 	{}
 };
 
+static void ideapad_check_features(struct ideapad_private *priv)
+{
+	acpi_handle handle = priv->adev->handle;
+	unsigned long val;
+
+	priv->features.hw_rfkill_switch = dmi_check_system(hw_rfkill_list);
+
+	/* Most ideapads with ELAN0634 touchpad don't use EC touchpad switch */
+	priv->features.touchpad_ctrl_via_ec = !acpi_dev_present("ELAN0634", NULL, -1);
+
+	if (!read_ec_data(handle, VPCCMD_R_FAN, &val))
+		priv->features.fan_mode = true;
+
+	if (acpi_has_method(handle, "GBMD") && acpi_has_method(handle, "SBMC"))
+		priv->features.conservation_mode = true;
+
+	if (acpi_has_method(handle, "DYTC"))
+		priv->features.dytc = true;
+
+	if (acpi_has_method(handle, "HALS") && acpi_has_method(handle, "SALS")) {
+		if (!eval_hals(handle, &val)) {
+			if (test_bit(HALS_FNLOCK_SUPPORT_BIT, &val))
+				priv->features.fn_lock = true;
+
+			if (test_bit(HALS_KBD_BL_SUPPORT_BIT, &val))
+				priv->features.kbd_bl = true;
+
+			if (test_bit(HALS_USB_CHARGING_SUPPORT_BIT, &val))
+				priv->features.usb_charging = true;
+		}
+	}
+}
+
 static int ideapad_acpi_add(struct platform_device *pdev)
 {
-	int ret, i;
-	int cfg;
 	struct ideapad_private *priv;
 	struct acpi_device *adev;
+	acpi_status status;
+	unsigned long cfg;
+	int err, i;
 
-	ret = acpi_bus_get_device(ACPI_HANDLE(&pdev->dev), &adev);
-	if (ret)
+	err = acpi_bus_get_device(ACPI_HANDLE(&pdev->dev), &adev);
+	if (err)
 		return -ENODEV;
 
-	if (read_method_int(adev->handle, "_CFG", &cfg))
+	if (eval_int(adev->handle, "_CFG", &cfg))
 		return -ENODEV;
 
 	priv = devm_kzalloc(&pdev->dev, sizeof(*priv), GFP_KERNEL);
@@ -990,33 +1530,40 @@ static int ideapad_acpi_add(struct platform_device *pdev)
 		return -ENOMEM;
 
 	dev_set_drvdata(&pdev->dev, priv);
+
 	priv->cfg = cfg;
 	priv->adev = adev;
 	priv->platform_device = pdev;
-	priv->has_hw_rfkill_switch = dmi_check_system(hw_rfkill_list);
 
-	/* Most ideapads with ELAN0634 touchpad don't use EC touchpad switch */
-	priv->has_touchpad_switch = !acpi_dev_present("ELAN0634", NULL, -1);
+	ideapad_check_features(priv);
 
-	ret = ideapad_sysfs_init(priv);
-	if (ret)
-		return ret;
+	err = ideapad_sysfs_init(priv);
+	if (err)
+		return err;
 
 	ideapad_debugfs_init(priv);
 
-	ret = ideapad_input_init(priv);
-	if (ret)
+	err = ideapad_input_init(priv);
+	if (err)
 		goto input_failed;
 
+	err = ideapad_kbd_bl_init(priv);
+	if (err) {
+		if (err != -ENODEV)
+			dev_warn(&pdev->dev, "Could not set up keyboard backlight LED: %d\n", err);
+		else
+			dev_info(&pdev->dev, "Keyboard backlight control not available\n");
+	}
+
 	/*
 	 * 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)
+	if (!priv->features.hw_rfkill_switch)
 		write_ec_cmd(priv->adev->handle, VPCCMD_W_RF, 1);
 
 	/* The same for Touchpad */
-	if (!priv->has_touchpad_switch)
+	if (!priv->features.touchpad_ctrl_via_ec)
 		write_ec_cmd(priv->adev->handle, VPCCMD_W_TOUCHPAD, 1);
 
 	for (i = 0; i < IDEAPAD_RFKILL_DEV_NUM; i++)
@@ -1026,45 +1573,70 @@ static int ideapad_acpi_add(struct platform_device *pdev)
 	ideapad_sync_rfk_state(priv);
 	ideapad_sync_touchpad_state(priv);
 
+	err = ideapad_dytc_profile_init(priv);
+	if (err) {
+		if (err != -ENODEV)
+			dev_warn(&pdev->dev, "Could not set up DYTC interface: %d\n", err);
+		else
+			dev_info(&pdev->dev, "DYTC interface is not available\n");
+	}
+
 	if (acpi_video_get_backlight_type() == acpi_backlight_vendor) {
-		ret = ideapad_backlight_init(priv);
-		if (ret && ret != -ENODEV)
+		err = ideapad_backlight_init(priv);
+		if (err && err != -ENODEV)
 			goto backlight_failed;
 	}
-	ret = acpi_install_notify_handler(adev->handle,
-		ACPI_DEVICE_NOTIFY, ideapad_acpi_notify, priv);
-	if (ret)
+
+	status = acpi_install_notify_handler(adev->handle,
+					     ACPI_DEVICE_NOTIFY,
+					     ideapad_acpi_notify, priv);
+	if (ACPI_FAILURE(status)) {
+		err = -EIO;
 		goto notification_failed;
+	}
 
 #if IS_ENABLED(CONFIG_ACPI_WMI)
 	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) {
+		status = wmi_install_notify_handler(ideapad_wmi_fnesc_events[i],
+						    ideapad_wmi_notify, priv);
+		if (ACPI_SUCCESS(status)) {
 			priv->fnesc_guid = ideapad_wmi_fnesc_events[i];
 			break;
 		}
 	}
-	if (ret != AE_OK && ret != AE_NOT_EXIST)
+
+	if (ACPI_FAILURE(status) && status != AE_NOT_EXIST) {
+		err = -EIO;
 		goto notification_failed_wmi;
+	}
 #endif
 
 	return 0;
+
 #if IS_ENABLED(CONFIG_ACPI_WMI)
 notification_failed_wmi:
 	acpi_remove_notify_handler(priv->adev->handle,
-		ACPI_DEVICE_NOTIFY, ideapad_acpi_notify);
+				   ACPI_DEVICE_NOTIFY,
+				   ideapad_acpi_notify);
 #endif
+
 notification_failed:
 	ideapad_backlight_exit(priv);
+
 backlight_failed:
+	ideapad_dytc_profile_exit(priv);
+
 	for (i = 0; i < IDEAPAD_RFKILL_DEV_NUM; i++)
 		ideapad_unregister_rfkill(priv, i);
+
+	ideapad_kbd_bl_exit(priv);
 	ideapad_input_exit(priv);
+
 input_failed:
 	ideapad_debugfs_exit(priv);
 	ideapad_sysfs_exit(priv);
-	return ret;
+
+	return err;
 }
 
 static int ideapad_acpi_remove(struct platform_device *pdev)
@@ -1076,38 +1648,44 @@ static int ideapad_acpi_remove(struct platform_device *pdev)
 	if (priv->fnesc_guid)
 		wmi_remove_notify_handler(priv->fnesc_guid);
 #endif
+
 	acpi_remove_notify_handler(priv->adev->handle,
-		ACPI_DEVICE_NOTIFY, ideapad_acpi_notify);
+				   ACPI_DEVICE_NOTIFY,
+				   ideapad_acpi_notify);
+
 	ideapad_backlight_exit(priv);
+	ideapad_dytc_profile_exit(priv);
+
 	for (i = 0; i < IDEAPAD_RFKILL_DEV_NUM; i++)
 		ideapad_unregister_rfkill(priv, i);
+
+	ideapad_kbd_bl_exit(priv);
 	ideapad_input_exit(priv);
 	ideapad_debugfs_exit(priv);
 	ideapad_sysfs_exit(priv);
-	dev_set_drvdata(&pdev->dev, NULL);
 
 	return 0;
 }
 
 #ifdef CONFIG_PM_SLEEP
-static int ideapad_acpi_resume(struct device *device)
+static int ideapad_acpi_resume(struct device *dev)
 {
-	struct ideapad_private *priv;
-
-	if (!device)
-		return -EINVAL;
-	priv = dev_get_drvdata(device);
+	struct ideapad_private *priv = dev_get_drvdata(dev);
 
 	ideapad_sync_rfk_state(priv);
 	ideapad_sync_touchpad_state(priv);
+
+	if (priv->dytc)
+		dytc_profile_refresh(priv);
+
 	return 0;
 }
 #endif
 static SIMPLE_DEV_PM_OPS(ideapad_pm, NULL, ideapad_acpi_resume);
 
 static const struct acpi_device_id ideapad_device_ids[] = {
-	{ "VPC2004", 0},
-	{ "", 0},
+	{"VPC2004", 0},
+	{"", 0},
 };
 MODULE_DEVICE_TABLE(acpi, ideapad_device_ids);