Adding upstream version 6.1.76.upstream/6.1.76

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 1577 insertions, 0 deletions

diff --git a/drivers/platform/x86/hp/hp-wmi.c b/drivers/platform/x86/hp/hp-wmi.c
new file mode 100644
index 000000000..51f23ff1f
--- /dev/null
+++ b/drivers/platform/x86/hp/hp-wmi.c
@@ -0,0 +1,1577 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * HP WMI hotkeys
+ *
+ * Copyright (C) 2008 Red Hat <mjg@redhat.com>
+ * Copyright (C) 2010, 2011 Anssi Hannula <anssi.hannula@iki.fi>
+ *
+ * Portions based on wistron_btns.c:
+ * Copyright (C) 2005 Miloslav Trmac <mitr@volny.cz>
+ * Copyright (C) 2005 Bernhard Rosenkraenzer <bero@arklinux.org>
+ * Copyright (C) 2005 Dmitry Torokhov <dtor@mail.ru>
+ */
+
+#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/slab.h>
+#include <linux/types.h>
+#include <linux/input.h>
+#include <linux/input/sparse-keymap.h>
+#include <linux/platform_device.h>
+#include <linux/platform_profile.h>
+#include <linux/hwmon.h>
+#include <linux/acpi.h>
+#include <linux/rfkill.h>
+#include <linux/string.h>
+#include <linux/dmi.h>
+
+MODULE_AUTHOR("Matthew Garrett <mjg59@srcf.ucam.org>");
+MODULE_DESCRIPTION("HP laptop WMI hotkeys driver");
+MODULE_LICENSE("GPL");
+
+MODULE_ALIAS("wmi:95F24279-4D7B-4334-9387-ACCDC67EF61C");
+MODULE_ALIAS("wmi:5FB7F034-2C63-45e9-BE91-3D44E2C707E4");
+
+#define HPWMI_EVENT_GUID "95F24279-4D7B-4334-9387-ACCDC67EF61C"
+#define HPWMI_BIOS_GUID "5FB7F034-2C63-45e9-BE91-3D44E2C707E4"
+#define HP_OMEN_EC_THERMAL_PROFILE_OFFSET 0x95
+#define zero_if_sup(tmp) (zero_insize_support?0:sizeof(tmp)) // use when zero insize is required
+
+/* DMI board names of devices that should use the omen specific path for
+ * thermal profiles.
+ * This was obtained by taking a look in the windows omen command center
+ * app and parsing a json file that they use to figure out what capabilities
+ * the device should have.
+ * A device is considered an omen if the DisplayName in that list contains
+ * "OMEN", and it can use the thermal profile stuff if the "Feature" array
+ * contains "PerformanceControl".
+ */
+static const char * const omen_thermal_profile_boards[] = {
+	"84DA", "84DB", "84DC", "8574", "8575", "860A", "87B5", "8572", "8573",
+	"8600", "8601", "8602", "8605", "8606", "8607", "8746", "8747", "8749",
+	"874A", "8603", "8604", "8748", "886B", "886C", "878A", "878B", "878C",
+	"88C8", "88CB", "8786", "8787", "8788", "88D1", "88D2", "88F4", "88FD",
+	"88F5", "88F6", "88F7", "88FE", "88FF", "8900", "8901", "8902", "8912",
+	"8917", "8918", "8949", "894A", "89EB"
+};
+
+/* DMI Board names of Omen laptops that are specifically set to be thermal
+ * profile version 0 by the Omen Command Center app, regardless of what
+ * the get system design information WMI call returns
+ */
+static const char *const omen_thermal_profile_force_v0_boards[] = {
+	"8607", "8746", "8747", "8749", "874A", "8748"
+};
+
+enum hp_wmi_radio {
+	HPWMI_WIFI	= 0x0,
+	HPWMI_BLUETOOTH	= 0x1,
+	HPWMI_WWAN	= 0x2,
+	HPWMI_GPS	= 0x3,
+};
+
+enum hp_wmi_event_ids {
+	HPWMI_DOCK_EVENT		= 0x01,
+	HPWMI_PARK_HDD			= 0x02,
+	HPWMI_SMART_ADAPTER		= 0x03,
+	HPWMI_BEZEL_BUTTON		= 0x04,
+	HPWMI_WIRELESS			= 0x05,
+	HPWMI_CPU_BATTERY_THROTTLE	= 0x06,
+	HPWMI_LOCK_SWITCH		= 0x07,
+	HPWMI_LID_SWITCH		= 0x08,
+	HPWMI_SCREEN_ROTATION		= 0x09,
+	HPWMI_COOLSENSE_SYSTEM_MOBILE	= 0x0A,
+	HPWMI_COOLSENSE_SYSTEM_HOT	= 0x0B,
+	HPWMI_PROXIMITY_SENSOR		= 0x0C,
+	HPWMI_BACKLIT_KB_BRIGHTNESS	= 0x0D,
+	HPWMI_PEAKSHIFT_PERIOD		= 0x0F,
+	HPWMI_BATTERY_CHARGE_PERIOD	= 0x10,
+	HPWMI_SANITIZATION_MODE		= 0x17,
+	HPWMI_OMEN_KEY			= 0x1D,
+	HPWMI_SMART_EXPERIENCE_APP	= 0x21,
+};
+
+/*
+ * struct bios_args buffer is dynamically allocated.  New WMI command types
+ * were introduced that exceeds 128-byte data size.  Changes to handle
+ * the data size allocation scheme were kept in hp_wmi_perform_qurey function.
+ */
+struct bios_args {
+	u32 signature;
+	u32 command;
+	u32 commandtype;
+	u32 datasize;
+	u8 data[];
+};
+
+enum hp_wmi_commandtype {
+	HPWMI_DISPLAY_QUERY		= 0x01,
+	HPWMI_HDDTEMP_QUERY		= 0x02,
+	HPWMI_ALS_QUERY			= 0x03,
+	HPWMI_HARDWARE_QUERY		= 0x04,
+	HPWMI_WIRELESS_QUERY		= 0x05,
+	HPWMI_BATTERY_QUERY		= 0x07,
+	HPWMI_BIOS_QUERY		= 0x09,
+	HPWMI_FEATURE_QUERY		= 0x0b,
+	HPWMI_HOTKEY_QUERY		= 0x0c,
+	HPWMI_FEATURE2_QUERY		= 0x0d,
+	HPWMI_WIRELESS2_QUERY		= 0x1b,
+	HPWMI_POSTCODEERROR_QUERY	= 0x2a,
+	HPWMI_SYSTEM_DEVICE_MODE	= 0x40,
+	HPWMI_THERMAL_PROFILE_QUERY	= 0x4c,
+};
+
+enum hp_wmi_gm_commandtype {
+	HPWMI_FAN_SPEED_GET_QUERY = 0x11,
+	HPWMI_SET_PERFORMANCE_MODE = 0x1A,
+	HPWMI_FAN_SPEED_MAX_GET_QUERY = 0x26,
+	HPWMI_FAN_SPEED_MAX_SET_QUERY = 0x27,
+	HPWMI_GET_SYSTEM_DESIGN_DATA = 0x28,
+};
+
+enum hp_wmi_command {
+	HPWMI_READ	= 0x01,
+	HPWMI_WRITE	= 0x02,
+	HPWMI_ODM	= 0x03,
+	HPWMI_GM	= 0x20008,
+};
+
+enum hp_wmi_hardware_mask {
+	HPWMI_DOCK_MASK		= 0x01,
+	HPWMI_TABLET_MASK	= 0x04,
+};
+
+struct bios_return {
+	u32 sigpass;
+	u32 return_code;
+};
+
+enum hp_return_value {
+	HPWMI_RET_WRONG_SIGNATURE	= 0x02,
+	HPWMI_RET_UNKNOWN_COMMAND	= 0x03,
+	HPWMI_RET_UNKNOWN_CMDTYPE	= 0x04,
+	HPWMI_RET_INVALID_PARAMETERS	= 0x05,
+};
+
+enum hp_wireless2_bits {
+	HPWMI_POWER_STATE	= 0x01,
+	HPWMI_POWER_SOFT	= 0x02,
+	HPWMI_POWER_BIOS	= 0x04,
+	HPWMI_POWER_HARD	= 0x08,
+	HPWMI_POWER_FW_OR_HW	= HPWMI_POWER_BIOS | HPWMI_POWER_HARD,
+};
+
+enum hp_thermal_profile_omen_v0 {
+	HP_OMEN_V0_THERMAL_PROFILE_DEFAULT     = 0x00,
+	HP_OMEN_V0_THERMAL_PROFILE_PERFORMANCE = 0x01,
+	HP_OMEN_V0_THERMAL_PROFILE_COOL        = 0x02,
+};
+
+enum hp_thermal_profile_omen_v1 {
+	HP_OMEN_V1_THERMAL_PROFILE_DEFAULT	= 0x30,
+	HP_OMEN_V1_THERMAL_PROFILE_PERFORMANCE	= 0x31,
+	HP_OMEN_V1_THERMAL_PROFILE_COOL		= 0x50,
+};
+
+enum hp_thermal_profile {
+	HP_THERMAL_PROFILE_PERFORMANCE	= 0x00,
+	HP_THERMAL_PROFILE_DEFAULT		= 0x01,
+	HP_THERMAL_PROFILE_COOL			= 0x02,
+	HP_THERMAL_PROFILE_QUIET		= 0x03,
+};
+
+#define IS_HWBLOCKED(x) ((x & HPWMI_POWER_FW_OR_HW) != HPWMI_POWER_FW_OR_HW)
+#define IS_SWBLOCKED(x) !(x & HPWMI_POWER_SOFT)
+
+struct bios_rfkill2_device_state {
+	u8 radio_type;
+	u8 bus_type;
+	u16 vendor_id;
+	u16 product_id;
+	u16 subsys_vendor_id;
+	u16 subsys_product_id;
+	u8 rfkill_id;
+	u8 power;
+	u8 unknown[4];
+};
+
+/* 7 devices fit into the 128 byte buffer */
+#define HPWMI_MAX_RFKILL2_DEVICES	7
+
+struct bios_rfkill2_state {
+	u8 unknown[7];
+	u8 count;
+	u8 pad[8];
+	struct bios_rfkill2_device_state device[HPWMI_MAX_RFKILL2_DEVICES];
+};
+
+static const struct key_entry hp_wmi_keymap[] = {
+	{ KE_KEY, 0x02,    { KEY_BRIGHTNESSUP } },
+	{ KE_KEY, 0x03,    { KEY_BRIGHTNESSDOWN } },
+	{ KE_KEY, 0x270,   { KEY_MICMUTE } },
+	{ KE_KEY, 0x20e6,  { KEY_PROG1 } },
+	{ KE_KEY, 0x20e8,  { KEY_MEDIA } },
+	{ KE_KEY, 0x2142,  { KEY_MEDIA } },
+	{ KE_KEY, 0x213b,  { KEY_INFO } },
+	{ KE_KEY, 0x2169,  { KEY_ROTATE_DISPLAY } },
+	{ KE_KEY, 0x216a,  { KEY_SETUP } },
+	{ KE_KEY, 0x21a5,  { KEY_PROG2 } }, /* HP Omen Key */
+	{ KE_KEY, 0x21a7,  { KEY_FN_ESC } },
+	{ KE_KEY, 0x21a9,  { KEY_TOUCHPAD_OFF } },
+	{ KE_KEY, 0x121a9, { KEY_TOUCHPAD_ON } },
+	{ KE_KEY, 0x231b,  { KEY_HELP } },
+	{ KE_END, 0 }
+};
+
+static struct input_dev *hp_wmi_input_dev;
+static struct platform_device *hp_wmi_platform_dev;
+static struct platform_profile_handler platform_profile_handler;
+static bool platform_profile_support;
+static bool zero_insize_support;
+
+static struct rfkill *wifi_rfkill;
+static struct rfkill *bluetooth_rfkill;
+static struct rfkill *wwan_rfkill;
+
+struct rfkill2_device {
+	u8 id;
+	int num;
+	struct rfkill *rfkill;
+};
+
+static int rfkill2_count;
+static struct rfkill2_device rfkill2[HPWMI_MAX_RFKILL2_DEVICES];
+
+/*
+ * Chassis Types values were obtained from SMBIOS reference
+ * specification version 3.00. A complete list of system enclosures
+ * and chassis types is available on Table 17.
+ */
+static const char * const tablet_chassis_types[] = {
+	"30", /* Tablet*/
+	"31", /* Convertible */
+	"32"  /* Detachable */
+};
+
+#define DEVICE_MODE_TABLET	0x06
+
+/* map output size to the corresponding WMI method id */
+static inline int encode_outsize_for_pvsz(int outsize)
+{
+	if (outsize > 4096)
+		return -EINVAL;
+	if (outsize > 1024)
+		return 5;
+	if (outsize > 128)
+		return 4;
+	if (outsize > 4)
+		return 3;
+	if (outsize > 0)
+		return 2;
+	return 1;
+}
+
+/*
+ * hp_wmi_perform_query
+ *
+ * query:	The commandtype (enum hp_wmi_commandtype)
+ * write:	The command (enum hp_wmi_command)
+ * buffer:	Buffer used as input and/or output
+ * insize:	Size of input buffer
+ * outsize:	Size of output buffer
+ *
+ * returns zero on success
+ *         an HP WMI query specific error code (which is positive)
+ *         -EINVAL if the query was not successful at all
+ *         -EINVAL if the output buffer size exceeds buffersize
+ *
+ * Note: The buffersize must at least be the maximum of the input and output
+ *       size. E.g. Battery info query is defined to have 1 byte input
+ *       and 128 byte output. The caller would do:
+ *       buffer = kzalloc(128, GFP_KERNEL);
+ *       ret = hp_wmi_perform_query(HPWMI_BATTERY_QUERY, HPWMI_READ, buffer, 1, 128)
+ */
+static int hp_wmi_perform_query(int query, enum hp_wmi_command command,
+				void *buffer, int insize, int outsize)
+{
+	struct acpi_buffer input, output = { ACPI_ALLOCATE_BUFFER, NULL };
+	struct bios_return *bios_return;
+	union acpi_object *obj = NULL;
+	struct bios_args *args = NULL;
+	int mid, actual_insize, actual_outsize;
+	size_t bios_args_size;
+	int ret;
+
+	mid = encode_outsize_for_pvsz(outsize);
+	if (WARN_ON(mid < 0))
+		return mid;
+
+	actual_insize = max(insize, 128);
+	bios_args_size = struct_size(args, data, actual_insize);
+	args = kmalloc(bios_args_size, GFP_KERNEL);
+	if (!args)
+		return -ENOMEM;
+
+	input.length = bios_args_size;
+	input.pointer = args;
+
+	args->signature = 0x55434553;
+	args->command = command;
+	args->commandtype = query;
+	args->datasize = insize;
+	memcpy(args->data, buffer, flex_array_size(args, data, insize));
+
+	ret = wmi_evaluate_method(HPWMI_BIOS_GUID, 0, mid, &input, &output);
+	if (ret)
+		goto out_free;
+
+	obj = output.pointer;
+	if (!obj) {
+		ret = -EINVAL;
+		goto out_free;
+	}
+
+	if (obj->type != ACPI_TYPE_BUFFER) {
+		pr_warn("query 0x%x returned an invalid object 0x%x\n", query, ret);
+		ret = -EINVAL;
+		goto out_free;
+	}
+
+	bios_return = (struct bios_return *)obj->buffer.pointer;
+	ret = bios_return->return_code;
+
+	if (ret) {
+		if (ret != HPWMI_RET_UNKNOWN_COMMAND &&
+		    ret != HPWMI_RET_UNKNOWN_CMDTYPE)
+			pr_warn("query 0x%x returned error 0x%x\n", query, ret);
+		goto out_free;
+	}
+
+	/* Ignore output data of zero size */
+	if (!outsize)
+		goto out_free;
+
+	actual_outsize = min(outsize, (int)(obj->buffer.length - sizeof(*bios_return)));
+	memcpy(buffer, obj->buffer.pointer + sizeof(*bios_return), actual_outsize);
+	memset(buffer + actual_outsize, 0, outsize - actual_outsize);
+
+out_free:
+	kfree(obj);
+	kfree(args);
+	return ret;
+}
+
+static int hp_wmi_get_fan_speed(int fan)
+{
+	u8 fsh, fsl;
+	char fan_data[4] = { fan, 0, 0, 0 };
+
+	int ret = hp_wmi_perform_query(HPWMI_FAN_SPEED_GET_QUERY, HPWMI_GM,
+				       &fan_data, sizeof(char),
+				       sizeof(fan_data));
+
+	if (ret != 0)
+		return -EINVAL;
+
+	fsh = fan_data[2];
+	fsl = fan_data[3];
+
+	return (fsh << 8) | fsl;
+}
+
+static int hp_wmi_read_int(int query)
+{
+	int val = 0, ret;
+
+	ret = hp_wmi_perform_query(query, HPWMI_READ, &val,
+				   zero_if_sup(val), sizeof(val));
+
+	if (ret)
+		return ret < 0 ? ret : -EINVAL;
+
+	return val;
+}
+
+static int hp_wmi_get_dock_state(void)
+{
+	int state = hp_wmi_read_int(HPWMI_HARDWARE_QUERY);
+
+	if (state < 0)
+		return state;
+
+	return !!(state & HPWMI_DOCK_MASK);
+}
+
+static int hp_wmi_get_tablet_mode(void)
+{
+	char system_device_mode[4] = { 0 };
+	const char *chassis_type;
+	bool tablet_found;
+	int ret;
+
+	chassis_type = dmi_get_system_info(DMI_CHASSIS_TYPE);
+	if (!chassis_type)
+		return -ENODEV;
+
+	tablet_found = match_string(tablet_chassis_types,
+				    ARRAY_SIZE(tablet_chassis_types),
+				    chassis_type) >= 0;
+	if (!tablet_found)
+		return -ENODEV;
+
+	ret = hp_wmi_perform_query(HPWMI_SYSTEM_DEVICE_MODE, HPWMI_READ,
+				   system_device_mode, zero_if_sup(system_device_mode),
+				   sizeof(system_device_mode));
+	if (ret < 0)
+		return ret;
+
+	return system_device_mode[0] == DEVICE_MODE_TABLET;
+}
+
+static int omen_thermal_profile_set(int mode)
+{
+	char buffer[2] = {0, mode};
+	int ret;
+
+	ret = hp_wmi_perform_query(HPWMI_SET_PERFORMANCE_MODE, HPWMI_GM,
+				   &buffer, sizeof(buffer), 0);
+
+	if (ret)
+		return ret < 0 ? ret : -EINVAL;
+
+	return mode;
+}
+
+static bool is_omen_thermal_profile(void)
+{
+	const char *board_name = dmi_get_system_info(DMI_BOARD_NAME);
+
+	if (!board_name)
+		return false;
+
+	return match_string(omen_thermal_profile_boards,
+			    ARRAY_SIZE(omen_thermal_profile_boards),
+			    board_name) >= 0;
+}
+
+static int omen_get_thermal_policy_version(void)
+{
+	unsigned char buffer[8] = { 0 };
+	int ret;
+
+	const char *board_name = dmi_get_system_info(DMI_BOARD_NAME);
+
+	if (board_name) {
+		int matches = match_string(omen_thermal_profile_force_v0_boards,
+			ARRAY_SIZE(omen_thermal_profile_force_v0_boards),
+			board_name);
+		if (matches >= 0)
+			return 0;
+	}
+
+	ret = hp_wmi_perform_query(HPWMI_GET_SYSTEM_DESIGN_DATA, HPWMI_GM,
+				   &buffer, sizeof(buffer), sizeof(buffer));
+
+	if (ret)
+		return ret < 0 ? ret : -EINVAL;
+
+	return buffer[3];
+}
+
+static int omen_thermal_profile_get(void)
+{
+	u8 data;
+
+	int ret = ec_read(HP_OMEN_EC_THERMAL_PROFILE_OFFSET, &data);
+
+	if (ret)
+		return ret;
+
+	return data;
+}
+
+static int hp_wmi_fan_speed_max_set(int enabled)
+{
+	int ret;
+
+	ret = hp_wmi_perform_query(HPWMI_FAN_SPEED_MAX_SET_QUERY, HPWMI_GM,
+				   &enabled, sizeof(enabled), 0);
+
+	if (ret)
+		return ret < 0 ? ret : -EINVAL;
+
+	return enabled;
+}
+
+static int hp_wmi_fan_speed_max_get(void)
+{
+	int val = 0, ret;
+
+	ret = hp_wmi_perform_query(HPWMI_FAN_SPEED_MAX_GET_QUERY, HPWMI_GM,
+				   &val, zero_if_sup(val), sizeof(val));
+
+	if (ret)
+		return ret < 0 ? ret : -EINVAL;
+
+	return val;
+}
+
+static int __init hp_wmi_bios_2008_later(void)
+{
+	int state = 0;
+	int ret = hp_wmi_perform_query(HPWMI_FEATURE_QUERY, HPWMI_READ, &state,
+				       zero_if_sup(state), sizeof(state));
+	if (!ret)
+		return 1;
+
+	return (ret == HPWMI_RET_UNKNOWN_CMDTYPE) ? 0 : -ENXIO;
+}
+
+static int __init hp_wmi_bios_2009_later(void)
+{
+	u8 state[128];
+	int ret = hp_wmi_perform_query(HPWMI_FEATURE2_QUERY, HPWMI_READ, &state,
+				       zero_if_sup(state), sizeof(state));
+	if (!ret)
+		return 1;
+
+	return (ret == HPWMI_RET_UNKNOWN_CMDTYPE) ? 0 : -ENXIO;
+}
+
+static int __init hp_wmi_enable_hotkeys(void)
+{
+	int value = 0x6e;
+	int ret = hp_wmi_perform_query(HPWMI_BIOS_QUERY, HPWMI_WRITE, &value,
+				       sizeof(value), 0);
+
+	return ret <= 0 ? ret : -EINVAL;
+}
+
+static int hp_wmi_set_block(void *data, bool blocked)
+{
+	enum hp_wmi_radio r = (long)data;
+	int query = BIT(r + 8) | ((!blocked) << r);
+	int ret;
+
+	ret = hp_wmi_perform_query(HPWMI_WIRELESS_QUERY, HPWMI_WRITE,
+				   &query, sizeof(query), 0);
+
+	return ret <= 0 ? ret : -EINVAL;
+}
+
+static const struct rfkill_ops hp_wmi_rfkill_ops = {
+	.set_block = hp_wmi_set_block,
+};
+
+static bool hp_wmi_get_sw_state(enum hp_wmi_radio r)
+{
+	int mask = 0x200 << (r * 8);
+
+	int wireless = hp_wmi_read_int(HPWMI_WIRELESS_QUERY);
+
+	/* TBD: Pass error */
+	WARN_ONCE(wireless < 0, "error executing HPWMI_WIRELESS_QUERY");
+
+	return !(wireless & mask);
+}
+
+static bool hp_wmi_get_hw_state(enum hp_wmi_radio r)
+{
+	int mask = 0x800 << (r * 8);
+
+	int wireless = hp_wmi_read_int(HPWMI_WIRELESS_QUERY);
+
+	/* TBD: Pass error */
+	WARN_ONCE(wireless < 0, "error executing HPWMI_WIRELESS_QUERY");
+
+	return !(wireless & mask);
+}
+
+static int hp_wmi_rfkill2_set_block(void *data, bool blocked)
+{
+	int rfkill_id = (int)(long)data;
+	char buffer[4] = { 0x01, 0x00, rfkill_id, !blocked };
+	int ret;
+
+	ret = hp_wmi_perform_query(HPWMI_WIRELESS2_QUERY, HPWMI_WRITE,
+				   buffer, sizeof(buffer), 0);
+
+	return ret <= 0 ? ret : -EINVAL;
+}
+
+static const struct rfkill_ops hp_wmi_rfkill2_ops = {
+	.set_block = hp_wmi_rfkill2_set_block,
+};
+
+static int hp_wmi_rfkill2_refresh(void)
+{
+	struct bios_rfkill2_state state;
+	int err, i;
+
+	err = hp_wmi_perform_query(HPWMI_WIRELESS2_QUERY, HPWMI_READ, &state,
+				   zero_if_sup(state), sizeof(state));
+	if (err)
+		return err;
+
+	for (i = 0; i < rfkill2_count; i++) {
+		int num = rfkill2[i].num;
+		struct bios_rfkill2_device_state *devstate;
+
+		devstate = &state.device[num];
+
+		if (num >= state.count ||
+		    devstate->rfkill_id != rfkill2[i].id) {
+			pr_warn("power configuration of the wireless devices unexpectedly changed\n");
+			continue;
+		}
+
+		rfkill_set_states(rfkill2[i].rfkill,
+				  IS_SWBLOCKED(devstate->power),
+				  IS_HWBLOCKED(devstate->power));
+	}
+
+	return 0;
+}
+
+static ssize_t display_show(struct device *dev, struct device_attribute *attr,
+			    char *buf)
+{
+	int value = hp_wmi_read_int(HPWMI_DISPLAY_QUERY);
+
+	if (value < 0)
+		return value;
+	return sprintf(buf, "%d\n", value);
+}
+
+static ssize_t hddtemp_show(struct device *dev, struct device_attribute *attr,
+			    char *buf)
+{
+	int value = hp_wmi_read_int(HPWMI_HDDTEMP_QUERY);
+
+	if (value < 0)
+		return value;
+	return sprintf(buf, "%d\n", value);
+}
+
+static ssize_t als_show(struct device *dev, struct device_attribute *attr,
+			char *buf)
+{
+	int value = hp_wmi_read_int(HPWMI_ALS_QUERY);
+
+	if (value < 0)
+		return value;
+	return sprintf(buf, "%d\n", value);
+}
+
+static ssize_t dock_show(struct device *dev, struct device_attribute *attr,
+			 char *buf)
+{
+	int value = hp_wmi_get_dock_state();
+
+	if (value < 0)
+		return value;
+	return sprintf(buf, "%d\n", value);
+}
+
+static ssize_t tablet_show(struct device *dev, struct device_attribute *attr,
+			   char *buf)
+{
+	int value = hp_wmi_get_tablet_mode();
+
+	if (value < 0)
+		return value;
+	return sprintf(buf, "%d\n", value);
+}
+
+static ssize_t postcode_show(struct device *dev, struct device_attribute *attr,
+			     char *buf)
+{
+	/* Get the POST error code of previous boot failure. */
+	int value = hp_wmi_read_int(HPWMI_POSTCODEERROR_QUERY);
+
+	if (value < 0)
+		return value;
+	return sprintf(buf, "0x%x\n", value);
+}
+
+static ssize_t als_store(struct device *dev, struct device_attribute *attr,
+			 const char *buf, size_t count)
+{
+	u32 tmp;
+	int ret;
+
+	ret = kstrtou32(buf, 10, &tmp);
+	if (ret)
+		return ret;
+
+	ret = hp_wmi_perform_query(HPWMI_ALS_QUERY, HPWMI_WRITE, &tmp,
+				       sizeof(tmp), 0);
+	if (ret)
+		return ret < 0 ? ret : -EINVAL;
+
+	return count;
+}
+
+static ssize_t postcode_store(struct device *dev, struct device_attribute *attr,
+			      const char *buf, size_t count)
+{
+	u32 tmp = 1;
+	bool clear;
+	int ret;
+
+	ret = kstrtobool(buf, &clear);
+	if (ret)
+		return ret;
+
+	if (clear == false)
+		return -EINVAL;
+
+	/* Clear the POST error code. It is kept until cleared. */
+	ret = hp_wmi_perform_query(HPWMI_POSTCODEERROR_QUERY, HPWMI_WRITE, &tmp,
+				       sizeof(tmp), 0);
+	if (ret)
+		return ret < 0 ? ret : -EINVAL;
+
+	return count;
+}
+
+static DEVICE_ATTR_RO(display);
+static DEVICE_ATTR_RO(hddtemp);
+static DEVICE_ATTR_RW(als);
+static DEVICE_ATTR_RO(dock);
+static DEVICE_ATTR_RO(tablet);
+static DEVICE_ATTR_RW(postcode);
+
+static struct attribute *hp_wmi_attrs[] = {
+	&dev_attr_display.attr,
+	&dev_attr_hddtemp.attr,
+	&dev_attr_als.attr,
+	&dev_attr_dock.attr,
+	&dev_attr_tablet.attr,
+	&dev_attr_postcode.attr,
+	NULL,
+};
+ATTRIBUTE_GROUPS(hp_wmi);
+
+static void hp_wmi_notify(u32 value, void *context)
+{
+	struct acpi_buffer response = { ACPI_ALLOCATE_BUFFER, NULL };
+	u32 event_id, event_data;
+	union acpi_object *obj;
+	acpi_status status;
+	u32 *location;
+	int key_code;
+
+	status = wmi_get_event_data(value, &response);
+	if (status != AE_OK) {
+		pr_info("bad event status 0x%x\n", status);
+		return;
+	}
+
+	obj = (union acpi_object *)response.pointer;
+
+	if (!obj)
+		return;
+	if (obj->type != ACPI_TYPE_BUFFER) {
+		pr_info("Unknown response received %d\n", obj->type);
+		kfree(obj);
+		return;
+	}
+
+	/*
+	 * Depending on ACPI version the concatenation of id and event data
+	 * inside _WED function will result in a 8 or 16 byte buffer.
+	 */
+	location = (u32 *)obj->buffer.pointer;
+	if (obj->buffer.length == 8) {
+		event_id = *location;
+		event_data = *(location + 1);
+	} else if (obj->buffer.length == 16) {
+		event_id = *location;
+		event_data = *(location + 2);
+	} else {
+		pr_info("Unknown buffer length %d\n", obj->buffer.length);
+		kfree(obj);
+		return;
+	}
+	kfree(obj);
+
+	switch (event_id) {
+	case HPWMI_DOCK_EVENT:
+		if (test_bit(SW_DOCK, hp_wmi_input_dev->swbit))
+			input_report_switch(hp_wmi_input_dev, SW_DOCK,
+					    hp_wmi_get_dock_state());
+		if (test_bit(SW_TABLET_MODE, hp_wmi_input_dev->swbit))
+			input_report_switch(hp_wmi_input_dev, SW_TABLET_MODE,
+					    hp_wmi_get_tablet_mode());
+		input_sync(hp_wmi_input_dev);
+		break;
+	case HPWMI_PARK_HDD:
+		break;
+	case HPWMI_SMART_ADAPTER:
+		break;
+	case HPWMI_BEZEL_BUTTON:
+	case HPWMI_OMEN_KEY:
+		key_code = hp_wmi_read_int(HPWMI_HOTKEY_QUERY);
+		if (key_code < 0)
+			break;
+
+		if (!sparse_keymap_report_event(hp_wmi_input_dev,
+						key_code, 1, true))
+			pr_info("Unknown key code - 0x%x\n", key_code);
+		break;
+	case HPWMI_WIRELESS:
+		if (rfkill2_count) {
+			hp_wmi_rfkill2_refresh();
+			break;
+		}
+
+		if (wifi_rfkill)
+			rfkill_set_states(wifi_rfkill,
+					  hp_wmi_get_sw_state(HPWMI_WIFI),
+					  hp_wmi_get_hw_state(HPWMI_WIFI));
+		if (bluetooth_rfkill)
+			rfkill_set_states(bluetooth_rfkill,
+					  hp_wmi_get_sw_state(HPWMI_BLUETOOTH),
+					  hp_wmi_get_hw_state(HPWMI_BLUETOOTH));
+		if (wwan_rfkill)
+			rfkill_set_states(wwan_rfkill,
+					  hp_wmi_get_sw_state(HPWMI_WWAN),
+					  hp_wmi_get_hw_state(HPWMI_WWAN));
+		break;
+	case HPWMI_CPU_BATTERY_THROTTLE:
+		pr_info("Unimplemented CPU throttle because of 3 Cell battery event detected\n");
+		break;
+	case HPWMI_LOCK_SWITCH:
+		break;
+	case HPWMI_LID_SWITCH:
+		break;
+	case HPWMI_SCREEN_ROTATION:
+		break;
+	case HPWMI_COOLSENSE_SYSTEM_MOBILE:
+		break;
+	case HPWMI_COOLSENSE_SYSTEM_HOT:
+		break;
+	case HPWMI_PROXIMITY_SENSOR:
+		break;
+	case HPWMI_BACKLIT_KB_BRIGHTNESS:
+		break;
+	case HPWMI_PEAKSHIFT_PERIOD:
+		break;
+	case HPWMI_BATTERY_CHARGE_PERIOD:
+		break;
+	case HPWMI_SANITIZATION_MODE:
+		break;
+	case HPWMI_SMART_EXPERIENCE_APP:
+		break;
+	default:
+		pr_info("Unknown event_id - %d - 0x%x\n", event_id, event_data);
+		break;
+	}
+}
+
+static int __init hp_wmi_input_setup(void)
+{
+	acpi_status status;
+	int err, val;
+
+	hp_wmi_input_dev = input_allocate_device();
+	if (!hp_wmi_input_dev)
+		return -ENOMEM;
+
+	hp_wmi_input_dev->name = "HP WMI hotkeys";
+	hp_wmi_input_dev->phys = "wmi/input0";
+	hp_wmi_input_dev->id.bustype = BUS_HOST;
+
+	__set_bit(EV_SW, hp_wmi_input_dev->evbit);
+
+	/* Dock */
+	val = hp_wmi_get_dock_state();
+	if (!(val < 0)) {
+		__set_bit(SW_DOCK, hp_wmi_input_dev->swbit);
+		input_report_switch(hp_wmi_input_dev, SW_DOCK, val);
+	}
+
+	/* Tablet mode */
+	val = hp_wmi_get_tablet_mode();
+	if (!(val < 0)) {
+		__set_bit(SW_TABLET_MODE, hp_wmi_input_dev->swbit);
+		input_report_switch(hp_wmi_input_dev, SW_TABLET_MODE, val);
+	}
+
+	err = sparse_keymap_setup(hp_wmi_input_dev, hp_wmi_keymap, NULL);
+	if (err)
+		goto err_free_dev;
+
+	/* Set initial hardware state */
+	input_sync(hp_wmi_input_dev);
+
+	if (!hp_wmi_bios_2009_later() && hp_wmi_bios_2008_later())
+		hp_wmi_enable_hotkeys();
+
+	status = wmi_install_notify_handler(HPWMI_EVENT_GUID, hp_wmi_notify, NULL);
+	if (ACPI_FAILURE(status)) {
+		err = -EIO;
+		goto err_free_dev;
+	}
+
+	err = input_register_device(hp_wmi_input_dev);
+	if (err)
+		goto err_uninstall_notifier;
+
+	return 0;
+
+ err_uninstall_notifier:
+	wmi_remove_notify_handler(HPWMI_EVENT_GUID);
+ err_free_dev:
+	input_free_device(hp_wmi_input_dev);
+	return err;
+}
+
+static void hp_wmi_input_destroy(void)
+{
+	wmi_remove_notify_handler(HPWMI_EVENT_GUID);
+	input_unregister_device(hp_wmi_input_dev);
+}
+
+static int __init hp_wmi_rfkill_setup(struct platform_device *device)
+{
+	int err, wireless;
+
+	wireless = hp_wmi_read_int(HPWMI_WIRELESS_QUERY);
+	if (wireless < 0)
+		return wireless;
+
+	err = hp_wmi_perform_query(HPWMI_WIRELESS_QUERY, HPWMI_WRITE, &wireless,
+				   sizeof(wireless), 0);
+	if (err)
+		return err;
+
+	if (wireless & 0x1) {
+		wifi_rfkill = rfkill_alloc("hp-wifi", &device->dev,
+					   RFKILL_TYPE_WLAN,
+					   &hp_wmi_rfkill_ops,
+					   (void *) HPWMI_WIFI);
+		if (!wifi_rfkill)
+			return -ENOMEM;
+		rfkill_init_sw_state(wifi_rfkill,
+				     hp_wmi_get_sw_state(HPWMI_WIFI));
+		rfkill_set_hw_state(wifi_rfkill,
+				    hp_wmi_get_hw_state(HPWMI_WIFI));
+		err = rfkill_register(wifi_rfkill);
+		if (err)
+			goto register_wifi_error;
+	}
+
+	if (wireless & 0x2) {
+		bluetooth_rfkill = rfkill_alloc("hp-bluetooth", &device->dev,
+						RFKILL_TYPE_BLUETOOTH,
+						&hp_wmi_rfkill_ops,
+						(void *) HPWMI_BLUETOOTH);
+		if (!bluetooth_rfkill) {
+			err = -ENOMEM;
+			goto register_bluetooth_error;
+		}
+		rfkill_init_sw_state(bluetooth_rfkill,
+				     hp_wmi_get_sw_state(HPWMI_BLUETOOTH));
+		rfkill_set_hw_state(bluetooth_rfkill,
+				    hp_wmi_get_hw_state(HPWMI_BLUETOOTH));
+		err = rfkill_register(bluetooth_rfkill);
+		if (err)
+			goto register_bluetooth_error;
+	}
+
+	if (wireless & 0x4) {
+		wwan_rfkill = rfkill_alloc("hp-wwan", &device->dev,
+					   RFKILL_TYPE_WWAN,
+					   &hp_wmi_rfkill_ops,
+					   (void *) HPWMI_WWAN);
+		if (!wwan_rfkill) {
+			err = -ENOMEM;
+			goto register_wwan_error;
+		}
+		rfkill_init_sw_state(wwan_rfkill,
+				     hp_wmi_get_sw_state(HPWMI_WWAN));
+		rfkill_set_hw_state(wwan_rfkill,
+				    hp_wmi_get_hw_state(HPWMI_WWAN));
+		err = rfkill_register(wwan_rfkill);
+		if (err)
+			goto register_wwan_error;
+	}
+
+	return 0;
+
+register_wwan_error:
+	rfkill_destroy(wwan_rfkill);
+	wwan_rfkill = NULL;
+	if (bluetooth_rfkill)
+		rfkill_unregister(bluetooth_rfkill);
+register_bluetooth_error:
+	rfkill_destroy(bluetooth_rfkill);
+	bluetooth_rfkill = NULL;
+	if (wifi_rfkill)
+		rfkill_unregister(wifi_rfkill);
+register_wifi_error:
+	rfkill_destroy(wifi_rfkill);
+	wifi_rfkill = NULL;
+	return err;
+}
+
+static int __init hp_wmi_rfkill2_setup(struct platform_device *device)
+{
+	struct bios_rfkill2_state state;
+	int err, i;
+
+	err = hp_wmi_perform_query(HPWMI_WIRELESS2_QUERY, HPWMI_READ, &state,
+				   zero_if_sup(state), sizeof(state));
+	if (err)
+		return err < 0 ? err : -EINVAL;
+
+	if (state.count > HPWMI_MAX_RFKILL2_DEVICES) {
+		pr_warn("unable to parse 0x1b query output\n");
+		return -EINVAL;
+	}
+
+	for (i = 0; i < state.count; i++) {
+		struct rfkill *rfkill;
+		enum rfkill_type type;
+		char *name;
+
+		switch (state.device[i].radio_type) {
+		case HPWMI_WIFI:
+			type = RFKILL_TYPE_WLAN;
+			name = "hp-wifi";
+			break;
+		case HPWMI_BLUETOOTH:
+			type = RFKILL_TYPE_BLUETOOTH;
+			name = "hp-bluetooth";
+			break;
+		case HPWMI_WWAN:
+			type = RFKILL_TYPE_WWAN;
+			name = "hp-wwan";
+			break;
+		case HPWMI_GPS:
+			type = RFKILL_TYPE_GPS;
+			name = "hp-gps";
+			break;
+		default:
+			pr_warn("unknown device type 0x%x\n",
+				state.device[i].radio_type);
+			continue;
+		}
+
+		if (!state.device[i].vendor_id) {
+			pr_warn("zero device %d while %d reported\n",
+				i, state.count);
+			continue;
+		}
+
+		rfkill = rfkill_alloc(name, &device->dev, type,
+				      &hp_wmi_rfkill2_ops, (void *)(long)i);
+		if (!rfkill) {
+			err = -ENOMEM;
+			goto fail;
+		}
+
+		rfkill2[rfkill2_count].id = state.device[i].rfkill_id;
+		rfkill2[rfkill2_count].num = i;
+		rfkill2[rfkill2_count].rfkill = rfkill;
+
+		rfkill_init_sw_state(rfkill,
+				     IS_SWBLOCKED(state.device[i].power));
+		rfkill_set_hw_state(rfkill,
+				    IS_HWBLOCKED(state.device[i].power));
+
+		if (!(state.device[i].power & HPWMI_POWER_BIOS))
+			pr_info("device %s blocked by BIOS\n", name);
+
+		err = rfkill_register(rfkill);
+		if (err) {
+			rfkill_destroy(rfkill);
+			goto fail;
+		}
+
+		rfkill2_count++;
+	}
+
+	return 0;
+fail:
+	for (; rfkill2_count > 0; rfkill2_count--) {
+		rfkill_unregister(rfkill2[rfkill2_count - 1].rfkill);
+		rfkill_destroy(rfkill2[rfkill2_count - 1].rfkill);
+	}
+	return err;
+}
+
+static int platform_profile_omen_get(struct platform_profile_handler *pprof,
+				     enum platform_profile_option *profile)
+{
+	int tp;
+
+	tp = omen_thermal_profile_get();
+	if (tp < 0)
+		return tp;
+
+	switch (tp) {
+	case HP_OMEN_V0_THERMAL_PROFILE_PERFORMANCE:
+	case HP_OMEN_V1_THERMAL_PROFILE_PERFORMANCE:
+		*profile = PLATFORM_PROFILE_PERFORMANCE;
+		break;
+	case HP_OMEN_V0_THERMAL_PROFILE_DEFAULT:
+	case HP_OMEN_V1_THERMAL_PROFILE_DEFAULT:
+		*profile = PLATFORM_PROFILE_BALANCED;
+		break;
+	case HP_OMEN_V0_THERMAL_PROFILE_COOL:
+	case HP_OMEN_V1_THERMAL_PROFILE_COOL:
+		*profile = PLATFORM_PROFILE_COOL;
+		break;
+	default:
+		return -EINVAL;
+	}
+
+	return 0;
+}
+
+static int platform_profile_omen_set(struct platform_profile_handler *pprof,
+				     enum platform_profile_option profile)
+{
+	int err, tp, tp_version;
+
+	tp_version = omen_get_thermal_policy_version();
+
+	if (tp_version < 0 || tp_version > 1)
+		return -EOPNOTSUPP;
+
+	switch (profile) {
+	case PLATFORM_PROFILE_PERFORMANCE:
+		if (tp_version == 0)
+			tp = HP_OMEN_V0_THERMAL_PROFILE_PERFORMANCE;
+		else
+			tp = HP_OMEN_V1_THERMAL_PROFILE_PERFORMANCE;
+		break;
+	case PLATFORM_PROFILE_BALANCED:
+		if (tp_version == 0)
+			tp = HP_OMEN_V0_THERMAL_PROFILE_DEFAULT;
+		else
+			tp = HP_OMEN_V1_THERMAL_PROFILE_DEFAULT;
+		break;
+	case PLATFORM_PROFILE_COOL:
+		if (tp_version == 0)
+			tp = HP_OMEN_V0_THERMAL_PROFILE_COOL;
+		else
+			tp = HP_OMEN_V1_THERMAL_PROFILE_COOL;
+		break;
+	default:
+		return -EOPNOTSUPP;
+	}
+
+	err = omen_thermal_profile_set(tp);
+	if (err < 0)
+		return err;
+
+	return 0;
+}
+
+static int thermal_profile_get(void)
+{
+	return hp_wmi_read_int(HPWMI_THERMAL_PROFILE_QUERY);
+}
+
+static int thermal_profile_set(int thermal_profile)
+{
+	return hp_wmi_perform_query(HPWMI_THERMAL_PROFILE_QUERY, HPWMI_WRITE, &thermal_profile,
+							   sizeof(thermal_profile), 0);
+}
+
+static int hp_wmi_platform_profile_get(struct platform_profile_handler *pprof,
+					enum platform_profile_option *profile)
+{
+	int tp;
+
+	tp = thermal_profile_get();
+	if (tp < 0)
+		return tp;
+
+	switch (tp) {
+	case HP_THERMAL_PROFILE_PERFORMANCE:
+		*profile =  PLATFORM_PROFILE_PERFORMANCE;
+		break;
+	case HP_THERMAL_PROFILE_DEFAULT:
+		*profile =  PLATFORM_PROFILE_BALANCED;
+		break;
+	case HP_THERMAL_PROFILE_COOL:
+		*profile =  PLATFORM_PROFILE_COOL;
+		break;
+	case HP_THERMAL_PROFILE_QUIET:
+		*profile = PLATFORM_PROFILE_QUIET;
+		break;
+	default:
+		return -EINVAL;
+	}
+
+	return 0;
+}
+
+static int hp_wmi_platform_profile_set(struct platform_profile_handler *pprof,
+					enum platform_profile_option profile)
+{
+	int err, tp;
+
+	switch (profile) {
+	case PLATFORM_PROFILE_PERFORMANCE:
+		tp =  HP_THERMAL_PROFILE_PERFORMANCE;
+		break;
+	case PLATFORM_PROFILE_BALANCED:
+		tp =  HP_THERMAL_PROFILE_DEFAULT;
+		break;
+	case PLATFORM_PROFILE_COOL:
+		tp =  HP_THERMAL_PROFILE_COOL;
+		break;
+	case PLATFORM_PROFILE_QUIET:
+		tp = HP_THERMAL_PROFILE_QUIET;
+		break;
+	default:
+		return -EOPNOTSUPP;
+	}
+
+	err = thermal_profile_set(tp);
+	if (err)
+		return err;
+
+	return 0;
+}
+
+static int thermal_profile_setup(void)
+{
+	int err, tp;
+
+	if (is_omen_thermal_profile()) {
+		tp = omen_thermal_profile_get();
+		if (tp < 0)
+			return tp;
+
+		/*
+		 * call thermal profile write command to ensure that the
+		 * firmware correctly sets the OEM variables
+		 */
+
+		err = omen_thermal_profile_set(tp);
+		if (err < 0)
+			return err;
+
+		platform_profile_handler.profile_get = platform_profile_omen_get;
+		platform_profile_handler.profile_set = platform_profile_omen_set;
+	} else {
+		tp = thermal_profile_get();
+
+		if (tp < 0)
+			return tp;
+
+		/*
+		 * call thermal profile write command to ensure that the
+		 * firmware correctly sets the OEM variables for the DPTF
+		 */
+		err = thermal_profile_set(tp);
+		if (err)
+			return err;
+
+		platform_profile_handler.profile_get = hp_wmi_platform_profile_get;
+		platform_profile_handler.profile_set = hp_wmi_platform_profile_set;
+
+		set_bit(PLATFORM_PROFILE_QUIET, platform_profile_handler.choices);
+	}
+
+	set_bit(PLATFORM_PROFILE_COOL, platform_profile_handler.choices);
+	set_bit(PLATFORM_PROFILE_BALANCED, platform_profile_handler.choices);
+	set_bit(PLATFORM_PROFILE_PERFORMANCE, platform_profile_handler.choices);
+
+	err = platform_profile_register(&platform_profile_handler);
+	if (err)
+		return err;
+
+	platform_profile_support = true;
+
+	return 0;
+}
+
+static int hp_wmi_hwmon_init(void);
+
+static int __init hp_wmi_bios_setup(struct platform_device *device)
+{
+	int err;
+	/* clear detected rfkill devices */
+	wifi_rfkill = NULL;
+	bluetooth_rfkill = NULL;
+	wwan_rfkill = NULL;
+	rfkill2_count = 0;
+
+	/*
+	 * In pre-2009 BIOS, command 1Bh return 0x4 to indicate that
+	 * BIOS no longer controls the power for the wireless
+	 * devices. All features supported by this command will no
+	 * longer be supported.
+	 */
+	if (!hp_wmi_bios_2009_later()) {
+		if (hp_wmi_rfkill_setup(device))
+			hp_wmi_rfkill2_setup(device);
+	}
+
+	err = hp_wmi_hwmon_init();
+
+	if (err < 0)
+		return err;
+
+	thermal_profile_setup();
+
+	return 0;
+}
+
+static int __exit hp_wmi_bios_remove(struct platform_device *device)
+{
+	int i;
+
+	for (i = 0; i < rfkill2_count; i++) {
+		rfkill_unregister(rfkill2[i].rfkill);
+		rfkill_destroy(rfkill2[i].rfkill);
+	}
+
+	if (wifi_rfkill) {
+		rfkill_unregister(wifi_rfkill);
+		rfkill_destroy(wifi_rfkill);
+	}
+	if (bluetooth_rfkill) {
+		rfkill_unregister(bluetooth_rfkill);
+		rfkill_destroy(bluetooth_rfkill);
+	}
+	if (wwan_rfkill) {
+		rfkill_unregister(wwan_rfkill);
+		rfkill_destroy(wwan_rfkill);
+	}
+
+	if (platform_profile_support)
+		platform_profile_remove();
+
+	return 0;
+}
+
+static int hp_wmi_resume_handler(struct device *device)
+{
+	/*
+	 * Hardware state may have changed while suspended, so trigger
+	 * input events for the current state. As this is a switch,
+	 * the input layer will only actually pass it on if the state
+	 * changed.
+	 */
+	if (hp_wmi_input_dev) {
+		if (test_bit(SW_DOCK, hp_wmi_input_dev->swbit))
+			input_report_switch(hp_wmi_input_dev, SW_DOCK,
+					    hp_wmi_get_dock_state());
+		if (test_bit(SW_TABLET_MODE, hp_wmi_input_dev->swbit))
+			input_report_switch(hp_wmi_input_dev, SW_TABLET_MODE,
+					    hp_wmi_get_tablet_mode());
+		input_sync(hp_wmi_input_dev);
+	}
+
+	if (rfkill2_count)
+		hp_wmi_rfkill2_refresh();
+
+	if (wifi_rfkill)
+		rfkill_set_states(wifi_rfkill,
+				  hp_wmi_get_sw_state(HPWMI_WIFI),
+				  hp_wmi_get_hw_state(HPWMI_WIFI));
+	if (bluetooth_rfkill)
+		rfkill_set_states(bluetooth_rfkill,
+				  hp_wmi_get_sw_state(HPWMI_BLUETOOTH),
+				  hp_wmi_get_hw_state(HPWMI_BLUETOOTH));
+	if (wwan_rfkill)
+		rfkill_set_states(wwan_rfkill,
+				  hp_wmi_get_sw_state(HPWMI_WWAN),
+				  hp_wmi_get_hw_state(HPWMI_WWAN));
+
+	return 0;
+}
+
+static const struct dev_pm_ops hp_wmi_pm_ops = {
+	.resume  = hp_wmi_resume_handler,
+	.restore  = hp_wmi_resume_handler,
+};
+
+/*
+ * hp_wmi_bios_remove() lives in .exit.text. For drivers registered via
+ * module_platform_driver_probe() this is ok because they cannot get unbound at
+ * runtime. So mark the driver struct with __refdata to prevent modpost
+ * triggering a section mismatch warning.
+ */
+static struct platform_driver hp_wmi_driver __refdata = {
+	.driver = {
+		.name = "hp-wmi",
+		.pm = &hp_wmi_pm_ops,
+		.dev_groups = hp_wmi_groups,
+	},
+	.remove = __exit_p(hp_wmi_bios_remove),
+};
+
+static umode_t hp_wmi_hwmon_is_visible(const void *data,
+				       enum hwmon_sensor_types type,
+				       u32 attr, int channel)
+{
+	switch (type) {
+	case hwmon_pwm:
+		return 0644;
+	case hwmon_fan:
+		if (hp_wmi_get_fan_speed(channel) >= 0)
+			return 0444;
+		break;
+	default:
+		return 0;
+	}
+
+	return 0;
+}
+
+static int hp_wmi_hwmon_read(struct device *dev, enum hwmon_sensor_types type,
+			     u32 attr, int channel, long *val)
+{
+	int ret;
+
+	switch (type) {
+	case hwmon_fan:
+		ret = hp_wmi_get_fan_speed(channel);
+
+		if (ret < 0)
+			return ret;
+		*val = ret;
+		return 0;
+	case hwmon_pwm:
+		switch (hp_wmi_fan_speed_max_get()) {
+		case 0:
+			/* 0 is automatic fan, which is 2 for hwmon */
+			*val = 2;
+			return 0;
+		case 1:
+			/* 1 is max fan, which is 0
+			 * (no fan speed control) for hwmon
+			 */
+			*val = 0;
+			return 0;
+		default:
+			/* shouldn't happen */
+			return -ENODATA;
+		}
+	default:
+		return -EINVAL;
+	}
+}
+
+static int hp_wmi_hwmon_write(struct device *dev, enum hwmon_sensor_types type,
+			      u32 attr, int channel, long val)
+{
+	switch (type) {
+	case hwmon_pwm:
+		switch (val) {
+		case 0:
+			/* 0 is no fan speed control (max), which is 1 for us */
+			return hp_wmi_fan_speed_max_set(1);
+		case 2:
+			/* 2 is automatic speed control, which is 0 for us */
+			return hp_wmi_fan_speed_max_set(0);
+		default:
+			/* we don't support manual fan speed control */
+			return -EINVAL;
+		}
+	default:
+		return -EOPNOTSUPP;
+	}
+}
+
+static const struct hwmon_channel_info *info[] = {
+	HWMON_CHANNEL_INFO(fan, HWMON_F_INPUT, HWMON_F_INPUT),
+	HWMON_CHANNEL_INFO(pwm, HWMON_PWM_ENABLE),
+	NULL
+};
+
+static const struct hwmon_ops ops = {
+	.is_visible = hp_wmi_hwmon_is_visible,
+	.read = hp_wmi_hwmon_read,
+	.write = hp_wmi_hwmon_write,
+};
+
+static const struct hwmon_chip_info chip_info = {
+	.ops = &ops,
+	.info = info,
+};
+
+static int hp_wmi_hwmon_init(void)
+{
+	struct device *dev = &hp_wmi_platform_dev->dev;
+	struct device *hwmon;
+
+	hwmon = devm_hwmon_device_register_with_info(dev, "hp", &hp_wmi_driver,
+						     &chip_info, NULL);
+
+	if (IS_ERR(hwmon)) {
+		dev_err(dev, "Could not register hp hwmon device\n");
+		return PTR_ERR(hwmon);
+	}
+
+	return 0;
+}
+
+static int __init hp_wmi_init(void)
+{
+	int event_capable = wmi_has_guid(HPWMI_EVENT_GUID);
+	int bios_capable = wmi_has_guid(HPWMI_BIOS_GUID);
+	int err, tmp = 0;
+
+	if (!bios_capable && !event_capable)
+		return -ENODEV;
+
+	if (hp_wmi_perform_query(HPWMI_HARDWARE_QUERY, HPWMI_READ, &tmp,
+				 sizeof(tmp), sizeof(tmp)) == HPWMI_RET_INVALID_PARAMETERS)
+		zero_insize_support = true;
+
+	if (event_capable) {
+		err = hp_wmi_input_setup();
+		if (err)
+			return err;
+	}
+
+	if (bios_capable) {
+		hp_wmi_platform_dev =
+			platform_device_register_simple("hp-wmi", PLATFORM_DEVID_NONE, NULL, 0);
+		if (IS_ERR(hp_wmi_platform_dev)) {
+			err = PTR_ERR(hp_wmi_platform_dev);
+			goto err_destroy_input;
+		}
+
+		err = platform_driver_probe(&hp_wmi_driver, hp_wmi_bios_setup);
+		if (err)
+			goto err_unregister_device;
+	}
+
+	return 0;
+
+err_unregister_device:
+	platform_device_unregister(hp_wmi_platform_dev);
+err_destroy_input:
+	if (event_capable)
+		hp_wmi_input_destroy();
+
+	return err;
+}
+module_init(hp_wmi_init);
+
+static void __exit hp_wmi_exit(void)
+{
+	if (wmi_has_guid(HPWMI_EVENT_GUID))
+		hp_wmi_input_destroy();
+
+	if (hp_wmi_platform_dev) {
+		platform_device_unregister(hp_wmi_platform_dev);
+		platform_driver_unregister(&hp_wmi_driver);
+	}
+}
+module_exit(hp_wmi_exit);