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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-11 08:27:49 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-11 08:27:49 +0000
commitace9429bb58fd418f0c81d4c2835699bddf6bde6 (patch)
treeb2d64bc10158fdd5497876388cd68142ca374ed3 /drivers/platform/x86/hp
parentInitial commit. (diff)
downloadlinux-ace9429bb58fd418f0c81d4c2835699bddf6bde6.tar.xz
linux-ace9429bb58fd418f0c81d4c2835699bddf6bde6.zip
Adding upstream version 6.6.15.upstream/6.6.15
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'drivers/platform/x86/hp')
-rw-r--r--drivers/platform/x86/hp/Kconfig79
-rw-r--r--drivers/platform/x86/hp/Makefile11
-rw-r--r--drivers/platform/x86/hp/hp-bioscfg/Makefile11
-rw-r--r--drivers/platform/x86/hp/hp-bioscfg/biosattr-interface.c312
-rw-r--r--drivers/platform/x86/hp/hp-bioscfg/bioscfg.c1067
-rw-r--r--drivers/platform/x86/hp/hp-bioscfg/bioscfg.h487
-rw-r--r--drivers/platform/x86/hp/hp-bioscfg/enum-attributes.c457
-rw-r--r--drivers/platform/x86/hp/hp-bioscfg/int-attributes.c418
-rw-r--r--drivers/platform/x86/hp/hp-bioscfg/order-list-attributes.c441
-rw-r--r--drivers/platform/x86/hp/hp-bioscfg/passwdobj-attributes.c556
-rw-r--r--drivers/platform/x86/hp/hp-bioscfg/spmobj-attributes.c381
-rw-r--r--drivers/platform/x86/hp/hp-bioscfg/string-attributes.c395
-rw-r--r--drivers/platform/x86/hp/hp-bioscfg/surestart-attributes.c132
-rw-r--r--drivers/platform/x86/hp/hp-wmi.c1729
-rw-r--r--drivers/platform/x86/hp/hp_accel.c386
-rw-r--r--drivers/platform/x86/hp/tc1100-wmi.c263
16 files changed, 7125 insertions, 0 deletions
diff --git a/drivers/platform/x86/hp/Kconfig b/drivers/platform/x86/hp/Kconfig
new file mode 100644
index 0000000000..7fef4f12e4
--- /dev/null
+++ b/drivers/platform/x86/hp/Kconfig
@@ -0,0 +1,79 @@
+# SPDX-License-Identifier: GPL-2.0-only
+#
+# X86 Platform Specific Drivers
+#
+menuconfig X86_PLATFORM_DRIVERS_HP
+ bool "HP X86 Platform Specific Device Drivers"
+ depends on X86_PLATFORM_DEVICES
+ help
+ Say Y here to get to see options for device drivers for various
+ HP x86 platforms, including vendor-specific laptop extension drivers.
+ This option alone does not add any kernel code.
+
+ If you say N, all options in this submenu will be skipped and disabled.
+
+if X86_PLATFORM_DRIVERS_HP
+
+config HP_ACCEL
+ tristate "HP laptop accelerometer"
+ default m
+ depends on INPUT && ACPI
+ depends on SERIO_I8042
+ select SENSORS_LIS3LV02D
+ select NEW_LEDS
+ select LEDS_CLASS
+ help
+ This driver provides support for the "Mobile Data Protection System 3D"
+ or "3D DriveGuard" feature of HP laptops. On such systems the driver
+ should load automatically (via ACPI alias).
+
+ Support for a led indicating disk protection will be provided as
+ hp::hddprotect. For more information on the feature, refer to
+ Documentation/misc-devices/lis3lv02d.rst.
+
+ To compile this driver as a module, choose M here: the module will
+ be called hp_accel.
+
+config HP_WMI
+ tristate "HP WMI extras"
+ default m
+ depends on ACPI_WMI
+ depends on INPUT
+ depends on RFKILL || RFKILL = n
+ select INPUT_SPARSEKMAP
+ select ACPI_PLATFORM_PROFILE
+ select HWMON
+ help
+ Say Y here if you want to support WMI-based hotkeys on HP laptops and
+ to read data from WMI such as docking or ambient light sensor state.
+
+ To compile this driver as a module, choose M here: the module will
+ be called hp-wmi.
+
+config TC1100_WMI
+ tristate "HP Compaq TC1100 Tablet WMI Extras"
+ default m
+ depends on !X86_64
+ depends on ACPI
+ depends on ACPI_WMI
+ help
+ This is a driver for the WMI extensions (wireless and bluetooth power
+ control) of the HP Compaq TC1100 tablet.
+
+config HP_BIOSCFG
+ tristate "HP BIOS Configuration Driver"
+ default m
+ depends on ACPI_WMI
+ select NLS
+ select FW_ATTR_CLASS
+ help
+ This driver enables administrators to securely manage BIOS settings
+ using digital certificates and public-key cryptography that eliminate
+ the need for passwords for both remote and local management. It supports
+ changing BIOS settings on many HP machines from 2018 and newer without
+ the use of any additional software.
+
+ To compile this driver as a module, choose M here: the module will
+ be called hp-bioscfg.
+
+endif # X86_PLATFORM_DRIVERS_HP
diff --git a/drivers/platform/x86/hp/Makefile b/drivers/platform/x86/hp/Makefile
new file mode 100644
index 0000000000..e4f908a61a
--- /dev/null
+++ b/drivers/platform/x86/hp/Makefile
@@ -0,0 +1,11 @@
+# SPDX-License-Identifier: GPL-2.0
+#
+# Makefile for linux/drivers/platform/x86/hp
+# HP x86 Platform-Specific Drivers
+#
+
+# Hewlett Packard
+obj-$(CONFIG_HP_ACCEL) += hp_accel.o
+obj-$(CONFIG_HP_WMI) += hp-wmi.o
+obj-$(CONFIG_TC1100_WMI) += tc1100-wmi.o
+obj-$(CONFIG_HP_BIOSCFG) += hp-bioscfg/
diff --git a/drivers/platform/x86/hp/hp-bioscfg/Makefile b/drivers/platform/x86/hp/hp-bioscfg/Makefile
new file mode 100644
index 0000000000..67be0d9177
--- /dev/null
+++ b/drivers/platform/x86/hp/hp-bioscfg/Makefile
@@ -0,0 +1,11 @@
+obj-$(CONFIG_HP_BIOSCFG) := hp-bioscfg.o
+
+hp-bioscfg-objs := bioscfg.o \
+ biosattr-interface.o \
+ enum-attributes.o \
+ int-attributes.o \
+ order-list-attributes.o \
+ passwdobj-attributes.o \
+ spmobj-attributes.o \
+ string-attributes.o \
+ surestart-attributes.o
diff --git a/drivers/platform/x86/hp/hp-bioscfg/biosattr-interface.c b/drivers/platform/x86/hp/hp-bioscfg/biosattr-interface.c
new file mode 100644
index 0000000000..dea54f35b8
--- /dev/null
+++ b/drivers/platform/x86/hp/hp-bioscfg/biosattr-interface.c
@@ -0,0 +1,312 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Functions corresponding to methods under BIOS interface GUID
+ * for use with hp-bioscfg driver.
+ *
+ * Copyright (c) 2022 Hewlett-Packard Inc.
+ */
+
+#include <linux/wmi.h>
+#include "bioscfg.h"
+
+/*
+ * 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_query function.
+ */
+struct bios_args {
+ u32 signature;
+ u32 command;
+ u32 commandtype;
+ u32 datasize;
+ u8 data[];
+};
+
+/**
+ * hp_set_attribute
+ *
+ * @a_name: The attribute name
+ * @a_value: The attribute value
+ *
+ * Sets an attribute to new value
+ *
+ * Returns zero on success
+ * -ENODEV if device is not found
+ * -EINVAL if the instance of 'Setup Admin' password is not found.
+ * -ENOMEM unable to allocate memory
+ */
+int hp_set_attribute(const char *a_name, const char *a_value)
+{
+ int security_area_size;
+ int a_name_size, a_value_size;
+ u16 *buffer = NULL;
+ u16 *start;
+ int buffer_size, instance, ret;
+ char *auth_token_choice;
+
+ mutex_lock(&bioscfg_drv.mutex);
+
+ instance = hp_get_password_instance_for_type(SETUP_PASSWD);
+ if (instance < 0) {
+ ret = -EINVAL;
+ goto out_set_attribute;
+ }
+
+ /* Select which auth token to use; password or [auth token] */
+ if (bioscfg_drv.spm_data.auth_token)
+ auth_token_choice = bioscfg_drv.spm_data.auth_token;
+ else
+ auth_token_choice = bioscfg_drv.password_data[instance].current_password;
+
+ a_name_size = hp_calculate_string_buffer(a_name);
+ a_value_size = hp_calculate_string_buffer(a_value);
+ security_area_size = hp_calculate_security_buffer(auth_token_choice);
+ buffer_size = a_name_size + a_value_size + security_area_size;
+
+ buffer = kmalloc(buffer_size + 1, GFP_KERNEL);
+ if (!buffer) {
+ ret = -ENOMEM;
+ goto out_set_attribute;
+ }
+
+ /* build variables to set */
+ start = buffer;
+ start = hp_ascii_to_utf16_unicode(start, a_name);
+ if (!start) {
+ ret = -EINVAL;
+ goto out_set_attribute;
+ }
+
+ start = hp_ascii_to_utf16_unicode(start, a_value);
+ if (!start) {
+ ret = -EINVAL;
+ goto out_set_attribute;
+ }
+
+ ret = hp_populate_security_buffer(start, auth_token_choice);
+ if (ret < 0)
+ goto out_set_attribute;
+
+ ret = hp_wmi_set_bios_setting(buffer, buffer_size);
+
+out_set_attribute:
+ kfree(buffer);
+ mutex_unlock(&bioscfg_drv.mutex);
+ return ret;
+}
+
+/**
+ * hp_wmi_perform_query
+ *
+ * @query: The commandtype (enum hp_wmi_commandtype)
+ * @command: 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)
+ */
+int hp_wmi_perform_query(int query, enum hp_wmi_command command, void *buffer,
+ u32 insize, u32 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_outsize, ret;
+ size_t bios_args_size;
+
+ mid = hp_encode_outsize_for_pvsz(outsize);
+ if (WARN_ON(mid < 0))
+ return mid;
+
+ bios_args_size = struct_size(args, data, insize);
+ args = kmalloc(bios_args_size, GFP_KERNEL);
+ if (!args)
+ return -ENOMEM;
+
+ input.length = bios_args_size;
+ input.pointer = args;
+
+ /* BIOS expects 'SECU' in hex as the signature value*/
+ 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(HP_WMI_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 ||
+ obj->buffer.length < sizeof(*bios_return)) {
+ pr_warn("query 0x%x returned wrong type or too small buffer\n", query);
+ ret = -EINVAL;
+ goto out_free;
+ }
+
+ bios_return = (struct bios_return *)obj->buffer.pointer;
+ ret = bios_return->return_code;
+ if (ret) {
+ if (ret != INVALID_CMD_VALUE && ret != INVALID_CMD_TYPE)
+ 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_t(u32, outsize, obj->buffer.length - sizeof(*bios_return));
+ memcpy_and_pad(buffer, outsize, obj->buffer.pointer + sizeof(*bios_return),
+ actual_outsize, 0);
+
+out_free:
+ ret = hp_wmi_error_and_message(ret);
+
+ kfree(obj);
+ kfree(args);
+ return ret;
+}
+
+static void *utf16_empty_string(u16 *p)
+{
+ *p++ = 2;
+ *p++ = 0x00;
+ return p;
+}
+
+/**
+ * hp_ascii_to_utf16_unicode - Convert ascii string to UTF-16 unicode
+ *
+ * BIOS supports UTF-16 characters that are 2 bytes long. No variable
+ * multi-byte language supported.
+ *
+ * @p: Unicode buffer address
+ * @str: string to convert to unicode
+ *
+ * Returns a void pointer to the buffer string
+ */
+void *hp_ascii_to_utf16_unicode(u16 *p, const u8 *str)
+{
+ int len = strlen(str);
+ int ret;
+
+ /*
+ * Add null character when reading an empty string
+ * "02 00 00 00"
+ */
+ if (len == 0)
+ return utf16_empty_string(p);
+
+ /* Move pointer len * 2 number of bytes */
+ *p++ = len * 2;
+ ret = utf8s_to_utf16s(str, strlen(str), UTF16_HOST_ENDIAN, p, len);
+ if (ret < 0) {
+ dev_err(bioscfg_drv.class_dev, "UTF16 conversion failed\n");
+ return NULL;
+ }
+
+ if (ret * sizeof(u16) > U16_MAX) {
+ dev_err(bioscfg_drv.class_dev, "Error string too long\n");
+ return NULL;
+ }
+
+ p += len;
+ return p;
+}
+
+/**
+ * hp_wmi_set_bios_setting - Set setting's value in BIOS
+ *
+ * @input_buffer: Input buffer address
+ * @input_size: Input buffer size
+ *
+ * Returns: Count of unicode characters written to BIOS if successful, otherwise
+ * -ENOMEM unable to allocate memory
+ * -EINVAL buffer not allocated or too small
+ */
+int hp_wmi_set_bios_setting(u16 *input_buffer, u32 input_size)
+{
+ union acpi_object *obj;
+ struct acpi_buffer input = {input_size, input_buffer};
+ struct acpi_buffer output = {ACPI_ALLOCATE_BUFFER, NULL};
+ int ret;
+
+ ret = wmi_evaluate_method(HP_WMI_SET_BIOS_SETTING_GUID, 0, 1, &input, &output);
+
+ obj = output.pointer;
+ if (!obj)
+ return -EINVAL;
+
+ if (obj->type != ACPI_TYPE_INTEGER) {
+ ret = -EINVAL;
+ goto out_free;
+ }
+
+ ret = obj->integer.value;
+ if (ret) {
+ ret = hp_wmi_error_and_message(ret);
+ goto out_free;
+ }
+
+out_free:
+ kfree(obj);
+ return ret;
+}
+
+static int hp_attr_set_interface_probe(struct wmi_device *wdev, const void *context)
+{
+ mutex_lock(&bioscfg_drv.mutex);
+ mutex_unlock(&bioscfg_drv.mutex);
+ return 0;
+}
+
+static void hp_attr_set_interface_remove(struct wmi_device *wdev)
+{
+ mutex_lock(&bioscfg_drv.mutex);
+ mutex_unlock(&bioscfg_drv.mutex);
+}
+
+static const struct wmi_device_id hp_attr_set_interface_id_table[] = {
+ { .guid_string = HP_WMI_BIOS_GUID},
+ { }
+};
+
+static struct wmi_driver hp_attr_set_interface_driver = {
+ .driver = {
+ .name = DRIVER_NAME,
+ },
+ .probe = hp_attr_set_interface_probe,
+ .remove = hp_attr_set_interface_remove,
+ .id_table = hp_attr_set_interface_id_table,
+};
+
+int hp_init_attr_set_interface(void)
+{
+ return wmi_driver_register(&hp_attr_set_interface_driver);
+}
+
+void hp_exit_attr_set_interface(void)
+{
+ wmi_driver_unregister(&hp_attr_set_interface_driver);
+}
+
+MODULE_DEVICE_TABLE(wmi, hp_attr_set_interface_id_table);
diff --git a/drivers/platform/x86/hp/hp-bioscfg/bioscfg.c b/drivers/platform/x86/hp/hp-bioscfg/bioscfg.c
new file mode 100644
index 0000000000..6ddca857cc
--- /dev/null
+++ b/drivers/platform/x86/hp/hp-bioscfg/bioscfg.c
@@ -0,0 +1,1067 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Common methods for use with hp-bioscfg driver
+ *
+ * Copyright (c) 2022 HP Development Company, L.P.
+ */
+
+#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
+
+#include <linux/fs.h>
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/wmi.h>
+#include "bioscfg.h"
+#include "../../firmware_attributes_class.h"
+#include <linux/nls.h>
+#include <linux/errno.h>
+
+MODULE_AUTHOR("Jorge Lopez <jorge.lopez2@hp.com>");
+MODULE_DESCRIPTION("HP BIOS Configuration Driver");
+MODULE_LICENSE("GPL");
+
+struct bioscfg_priv bioscfg_drv = {
+ .mutex = __MUTEX_INITIALIZER(bioscfg_drv.mutex),
+};
+
+static struct class *fw_attr_class;
+
+ssize_t display_name_language_code_show(struct kobject *kobj,
+ struct kobj_attribute *attr,
+ char *buf)
+{
+ return sysfs_emit(buf, "%s\n", LANG_CODE_STR);
+}
+
+struct kobj_attribute common_display_langcode =
+ __ATTR_RO(display_name_language_code);
+
+int hp_get_integer_from_buffer(u8 **buffer, u32 *buffer_size, u32 *integer)
+{
+ int *ptr = PTR_ALIGN((int *)*buffer, sizeof(int));
+
+ /* Ensure there is enough space remaining to read the integer */
+ if (*buffer_size < sizeof(int))
+ return -EINVAL;
+
+ *integer = *(ptr++);
+ *buffer = (u8 *)ptr;
+ *buffer_size -= sizeof(int);
+
+ return 0;
+}
+
+int hp_get_string_from_buffer(u8 **buffer, u32 *buffer_size, char *dst, u32 dst_size)
+{
+ u16 *src = (u16 *)*buffer;
+ u16 src_size;
+
+ u16 size;
+ int i;
+ int conv_dst_size;
+
+ if (*buffer_size < sizeof(u16))
+ return -EINVAL;
+
+ src_size = *(src++);
+ /* size value in u16 chars */
+ size = src_size / sizeof(u16);
+
+ /* Ensure there is enough space remaining to read and convert
+ * the string
+ */
+ if (*buffer_size < src_size)
+ return -EINVAL;
+
+ for (i = 0; i < size; i++)
+ if (src[i] == '\\' ||
+ src[i] == '\r' ||
+ src[i] == '\n' ||
+ src[i] == '\t')
+ size++;
+
+ /*
+ * Conversion is limited to destination string max number of
+ * bytes.
+ */
+ conv_dst_size = size;
+ if (size > dst_size)
+ conv_dst_size = dst_size - 1;
+
+ /*
+ * convert from UTF-16 unicode to ASCII
+ */
+ utf16s_to_utf8s(src, src_size, UTF16_HOST_ENDIAN, dst, conv_dst_size);
+ dst[conv_dst_size] = 0;
+
+ for (i = 0; i < conv_dst_size; i++) {
+ if (*src == '\\' ||
+ *src == '\r' ||
+ *src == '\n' ||
+ *src == '\t') {
+ dst[i++] = '\\';
+ if (i == conv_dst_size)
+ break;
+ }
+
+ if (*src == '\r')
+ dst[i] = 'r';
+ else if (*src == '\n')
+ dst[i] = 'n';
+ else if (*src == '\t')
+ dst[i] = 't';
+ else if (*src == '"')
+ dst[i] = '\'';
+ else
+ dst[i] = *src;
+ src++;
+ }
+
+ *buffer = (u8 *)src;
+ *buffer_size -= size * sizeof(u16);
+
+ return size;
+}
+
+int hp_get_common_data_from_buffer(u8 **buffer_ptr, u32 *buffer_size,
+ struct common_data *common_data)
+{
+ int ret = 0;
+ int reqs;
+
+ // PATH:
+ ret = hp_get_string_from_buffer(buffer_ptr, buffer_size, common_data->path,
+ sizeof(common_data->path));
+ if (ret < 0)
+ goto common_exit;
+
+ // IS_READONLY:
+ ret = hp_get_integer_from_buffer(buffer_ptr, buffer_size,
+ &common_data->is_readonly);
+ if (ret < 0)
+ goto common_exit;
+
+ //DISPLAY_IN_UI:
+ ret = hp_get_integer_from_buffer(buffer_ptr, buffer_size,
+ &common_data->display_in_ui);
+ if (ret < 0)
+ goto common_exit;
+
+ // REQUIRES_PHYSICAL_PRESENCE:
+ ret = hp_get_integer_from_buffer(buffer_ptr, buffer_size,
+ &common_data->requires_physical_presence);
+ if (ret < 0)
+ goto common_exit;
+
+ // SEQUENCE:
+ ret = hp_get_integer_from_buffer(buffer_ptr, buffer_size,
+ &common_data->sequence);
+ if (ret < 0)
+ goto common_exit;
+
+ // PREREQUISITES_SIZE:
+ ret = hp_get_integer_from_buffer(buffer_ptr, buffer_size,
+ &common_data->prerequisites_size);
+ if (ret < 0)
+ goto common_exit;
+
+ if (common_data->prerequisites_size > MAX_PREREQUISITES_SIZE) {
+ /* Report a message and limit prerequisite size to maximum value */
+ pr_warn("Prerequisites size value exceeded the maximum number of elements supported or data may be malformed\n");
+ common_data->prerequisites_size = MAX_PREREQUISITES_SIZE;
+ }
+
+ // PREREQUISITES:
+ for (reqs = 0; reqs < common_data->prerequisites_size; reqs++) {
+ ret = hp_get_string_from_buffer(buffer_ptr, buffer_size,
+ common_data->prerequisites[reqs],
+ sizeof(common_data->prerequisites[reqs]));
+ if (ret < 0)
+ break;
+ }
+
+ // SECURITY_LEVEL:
+ ret = hp_get_integer_from_buffer(buffer_ptr, buffer_size,
+ &common_data->security_level);
+
+common_exit:
+ return ret;
+}
+
+int hp_enforce_single_line_input(char *buf, size_t count)
+{
+ char *p;
+
+ p = memchr(buf, '\n', count);
+
+ if (p == buf + count - 1)
+ *p = '\0'; /* strip trailing newline */
+ else if (p)
+ return -EINVAL; /* enforce single line input */
+
+ return 0;
+}
+
+/* Set pending reboot value and generate KOBJ_NAME event */
+void hp_set_reboot_and_signal_event(void)
+{
+ bioscfg_drv.pending_reboot = true;
+ kobject_uevent(&bioscfg_drv.class_dev->kobj, KOBJ_CHANGE);
+}
+
+/**
+ * hp_calculate_string_buffer() - determines size of string buffer for
+ * use with BIOS communication
+ *
+ * @str: the string to calculate based upon
+ */
+size_t hp_calculate_string_buffer(const char *str)
+{
+ size_t length = strlen(str);
+
+ /* BIOS expects 4 bytes when an empty string is found */
+ if (length == 0)
+ return 4;
+
+ /* u16 length field + one UTF16 char for each input char */
+ return sizeof(u16) + strlen(str) * sizeof(u16);
+}
+
+int hp_wmi_error_and_message(int error_code)
+{
+ char *error_msg = NULL;
+ int ret;
+
+ switch (error_code) {
+ case SUCCESS:
+ error_msg = "Success";
+ ret = 0;
+ break;
+ case CMD_FAILED:
+ error_msg = "Command failed";
+ ret = -EINVAL;
+ break;
+ case INVALID_SIGN:
+ error_msg = "Invalid signature";
+ ret = -EINVAL;
+ break;
+ case INVALID_CMD_VALUE:
+ error_msg = "Invalid command value/Feature not supported";
+ ret = -EOPNOTSUPP;
+ break;
+ case INVALID_CMD_TYPE:
+ error_msg = "Invalid command type";
+ ret = -EINVAL;
+ break;
+ case INVALID_DATA_SIZE:
+ error_msg = "Invalid data size";
+ ret = -EINVAL;
+ break;
+ case INVALID_CMD_PARAM:
+ error_msg = "Invalid command parameter";
+ ret = -EINVAL;
+ break;
+ case ENCRYP_CMD_REQUIRED:
+ error_msg = "Secure/encrypted command required";
+ ret = -EACCES;
+ break;
+ case NO_SECURE_SESSION:
+ error_msg = "No secure session established";
+ ret = -EACCES;
+ break;
+ case SECURE_SESSION_FOUND:
+ error_msg = "Secure session already established";
+ ret = -EACCES;
+ break;
+ case SECURE_SESSION_FAILED:
+ error_msg = "Secure session failed";
+ ret = -EIO;
+ break;
+ case AUTH_FAILED:
+ error_msg = "Other permission/Authentication failed";
+ ret = -EACCES;
+ break;
+ case INVALID_BIOS_AUTH:
+ error_msg = "Invalid BIOS administrator password";
+ ret = -EINVAL;
+ break;
+ case NONCE_DID_NOT_MATCH:
+ error_msg = "Nonce did not match";
+ ret = -EINVAL;
+ break;
+ case GENERIC_ERROR:
+ error_msg = "Generic/Other error";
+ ret = -EIO;
+ break;
+ case BIOS_ADMIN_POLICY_NOT_MET:
+ error_msg = "BIOS Admin password does not meet password policy requirements";
+ ret = -EINVAL;
+ break;
+ case BIOS_ADMIN_NOT_SET:
+ error_msg = "BIOS Setup password is not set";
+ ret = -EPERM;
+ break;
+ case P21_NO_PROVISIONED:
+ error_msg = "P21 is not provisioned";
+ ret = -EPERM;
+ break;
+ case P21_PROVISION_IN_PROGRESS:
+ error_msg = "P21 is already provisioned or provisioning is in progress and a signing key has already been sent";
+ ret = -EINPROGRESS;
+ break;
+ case P21_IN_USE:
+ error_msg = "P21 in use (cannot deprovision)";
+ ret = -EPERM;
+ break;
+ case HEP_NOT_ACTIVE:
+ error_msg = "HEP not activated";
+ ret = -EPERM;
+ break;
+ case HEP_ALREADY_SET:
+ error_msg = "HEP Transport already set";
+ ret = -EINVAL;
+ break;
+ case HEP_CHECK_STATE:
+ error_msg = "Check the current HEP state";
+ ret = -EINVAL;
+ break;
+ default:
+ error_msg = "Generic/Other error";
+ ret = -EIO;
+ break;
+ }
+
+ if (error_code)
+ pr_warn_ratelimited("Returned error 0x%x, \"%s\"\n", error_code, error_msg);
+
+ return ret;
+}
+
+static ssize_t pending_reboot_show(struct kobject *kobj,
+ struct kobj_attribute *attr,
+ char *buf)
+{
+ return sysfs_emit(buf, "%d\n", bioscfg_drv.pending_reboot);
+}
+
+static struct kobj_attribute pending_reboot = __ATTR_RO(pending_reboot);
+
+/*
+ * create_attributes_level_sysfs_files() - Creates pending_reboot attributes
+ */
+static int create_attributes_level_sysfs_files(void)
+{
+ return sysfs_create_file(&bioscfg_drv.main_dir_kset->kobj,
+ &pending_reboot.attr);
+}
+
+static void attr_name_release(struct kobject *kobj)
+{
+ kfree(kobj);
+}
+
+static const struct kobj_type attr_name_ktype = {
+ .release = attr_name_release,
+ .sysfs_ops = &kobj_sysfs_ops,
+};
+
+/**
+ * hp_get_wmiobj_pointer() - Get Content of WMI block for particular instance
+ *
+ * @instance_id: WMI instance ID
+ * @guid_string: WMI GUID (in str form)
+ *
+ * Fetches the content for WMI block (instance_id) under GUID (guid_string)
+ * Caller must kfree the return
+ */
+union acpi_object *hp_get_wmiobj_pointer(int instance_id, const char *guid_string)
+{
+ struct acpi_buffer out = { ACPI_ALLOCATE_BUFFER, NULL };
+ acpi_status status;
+
+ status = wmi_query_block(guid_string, instance_id, &out);
+ return ACPI_SUCCESS(status) ? (union acpi_object *)out.pointer : NULL;
+}
+
+/**
+ * hp_get_instance_count() - Compute total number of instances under guid_string
+ *
+ * @guid_string: WMI GUID (in string form)
+ */
+int hp_get_instance_count(const char *guid_string)
+{
+ union acpi_object *wmi_obj = NULL;
+ int i = 0;
+
+ do {
+ kfree(wmi_obj);
+ wmi_obj = hp_get_wmiobj_pointer(i, guid_string);
+ i++;
+ } while (wmi_obj);
+
+ return i - 1;
+}
+
+/**
+ * hp_alloc_attributes_data() - Allocate attributes data for a particular type
+ *
+ * @attr_type: Attribute type to allocate
+ */
+static int hp_alloc_attributes_data(int attr_type)
+{
+ switch (attr_type) {
+ case HPWMI_STRING_TYPE:
+ return hp_alloc_string_data();
+
+ case HPWMI_INTEGER_TYPE:
+ return hp_alloc_integer_data();
+
+ case HPWMI_ENUMERATION_TYPE:
+ return hp_alloc_enumeration_data();
+
+ case HPWMI_ORDERED_LIST_TYPE:
+ return hp_alloc_ordered_list_data();
+
+ case HPWMI_PASSWORD_TYPE:
+ return hp_alloc_password_data();
+
+ default:
+ return 0;
+ }
+}
+
+int hp_convert_hexstr_to_str(const char *input, u32 input_len, char **str, int *len)
+{
+ int ret = 0;
+ int new_len = 0;
+ char tmp[] = "0x00";
+ char *new_str = NULL;
+ long ch;
+ int i;
+
+ if (input_len <= 0 || !input || !str || !len)
+ return -EINVAL;
+
+ *len = 0;
+ *str = NULL;
+
+ new_str = kmalloc(input_len, GFP_KERNEL);
+ if (!new_str)
+ return -ENOMEM;
+
+ for (i = 0; i < input_len; i += 5) {
+ strncpy(tmp, input + i, strlen(tmp));
+ if (kstrtol(tmp, 16, &ch) == 0) {
+ // escape char
+ if (ch == '\\' ||
+ ch == '\r' ||
+ ch == '\n' || ch == '\t') {
+ if (ch == '\r')
+ ch = 'r';
+ else if (ch == '\n')
+ ch = 'n';
+ else if (ch == '\t')
+ ch = 't';
+ new_str[new_len++] = '\\';
+ }
+ new_str[new_len++] = ch;
+ if (ch == '\0')
+ break;
+ }
+ }
+
+ if (new_len) {
+ new_str[new_len] = '\0';
+ *str = krealloc(new_str, (new_len + 1) * sizeof(char),
+ GFP_KERNEL);
+ if (*str)
+ *len = new_len;
+ else
+ ret = -ENOMEM;
+ } else {
+ ret = -EFAULT;
+ }
+
+ if (ret)
+ kfree(new_str);
+ return ret;
+}
+
+/* map output size to the corresponding WMI method id */
+int hp_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;
+}
+
+/*
+ * Update friendly display name for several attributes associated to
+ * 'Schedule Power-On'
+ */
+void hp_friendly_user_name_update(char *path, const char *attr_name,
+ char *attr_display, int attr_size)
+{
+ if (strstr(path, SCHEDULE_POWER_ON))
+ snprintf(attr_display, attr_size, "%s - %s", SCHEDULE_POWER_ON, attr_name);
+ else
+ strscpy(attr_display, attr_name, attr_size);
+}
+
+/**
+ * hp_update_attribute_permissions() - Update attributes permissions when
+ * isReadOnly value is 1
+ *
+ * @is_readonly: bool value to indicate if it a readonly attribute.
+ * @current_val: kobj_attribute corresponding to attribute.
+ *
+ */
+void hp_update_attribute_permissions(bool is_readonly, struct kobj_attribute *current_val)
+{
+ current_val->attr.mode = is_readonly ? 0444 : 0644;
+}
+
+/**
+ * destroy_attribute_objs() - Free a kset of kobjects
+ * @kset: The kset to destroy
+ *
+ * Fress kobjects created for each attribute_name under attribute type kset
+ */
+static void destroy_attribute_objs(struct kset *kset)
+{
+ struct kobject *pos, *next;
+
+ list_for_each_entry_safe(pos, next, &kset->list, entry)
+ kobject_put(pos);
+}
+
+/**
+ * release_attributes_data() - Clean-up all sysfs directories and files created
+ */
+static void release_attributes_data(void)
+{
+ mutex_lock(&bioscfg_drv.mutex);
+
+ hp_exit_string_attributes();
+ hp_exit_integer_attributes();
+ hp_exit_enumeration_attributes();
+ hp_exit_ordered_list_attributes();
+ hp_exit_password_attributes();
+ hp_exit_sure_start_attributes();
+ hp_exit_secure_platform_attributes();
+
+ if (bioscfg_drv.authentication_dir_kset) {
+ destroy_attribute_objs(bioscfg_drv.authentication_dir_kset);
+ kset_unregister(bioscfg_drv.authentication_dir_kset);
+ bioscfg_drv.authentication_dir_kset = NULL;
+ }
+ if (bioscfg_drv.main_dir_kset) {
+ sysfs_remove_file(&bioscfg_drv.main_dir_kset->kobj, &pending_reboot.attr);
+ destroy_attribute_objs(bioscfg_drv.main_dir_kset);
+ kset_unregister(bioscfg_drv.main_dir_kset);
+ bioscfg_drv.main_dir_kset = NULL;
+ }
+ mutex_unlock(&bioscfg_drv.mutex);
+}
+
+/**
+ * hp_add_other_attributes() - Initialize HP custom attributes not
+ * reported by BIOS and required to support Secure Platform and Sure
+ * Start.
+ *
+ * @attr_type: Custom HP attribute not reported by BIOS
+ *
+ * Initialize all 2 types of attributes: Platform and Sure Start
+ * object. Populates each attribute types respective properties
+ * under sysfs files.
+ *
+ * Returns zero(0) if successful. Otherwise, a negative value.
+ */
+static int hp_add_other_attributes(int attr_type)
+{
+ struct kobject *attr_name_kobj;
+ union acpi_object *obj = NULL;
+ int ret;
+ char *attr_name;
+
+ attr_name_kobj = kzalloc(sizeof(*attr_name_kobj), GFP_KERNEL);
+ if (!attr_name_kobj)
+ return -ENOMEM;
+
+ mutex_lock(&bioscfg_drv.mutex);
+
+ /* Check if attribute type is supported */
+ switch (attr_type) {
+ case HPWMI_SECURE_PLATFORM_TYPE:
+ attr_name_kobj->kset = bioscfg_drv.authentication_dir_kset;
+ attr_name = SPM_STR;
+ break;
+
+ case HPWMI_SURE_START_TYPE:
+ attr_name_kobj->kset = bioscfg_drv.main_dir_kset;
+ attr_name = SURE_START_STR;
+ break;
+
+ default:
+ pr_err("Error: Unknown attr_type: %d\n", attr_type);
+ ret = -EINVAL;
+ kfree(attr_name_kobj);
+ goto unlock_drv_mutex;
+ }
+
+ ret = kobject_init_and_add(attr_name_kobj, &attr_name_ktype,
+ NULL, "%s", attr_name);
+ if (ret) {
+ pr_err("Error encountered [%d]\n", ret);
+ goto err_other_attr_init;
+ }
+
+ /* Populate attribute data */
+ switch (attr_type) {
+ case HPWMI_SECURE_PLATFORM_TYPE:
+ ret = hp_populate_secure_platform_data(attr_name_kobj);
+ break;
+
+ case HPWMI_SURE_START_TYPE:
+ ret = hp_populate_sure_start_data(attr_name_kobj);
+ break;
+
+ default:
+ ret = -EINVAL;
+ }
+
+ if (ret)
+ goto err_other_attr_init;
+
+ mutex_unlock(&bioscfg_drv.mutex);
+ return 0;
+
+err_other_attr_init:
+ kobject_put(attr_name_kobj);
+unlock_drv_mutex:
+ mutex_unlock(&bioscfg_drv.mutex);
+ kfree(obj);
+ return ret;
+}
+
+static int hp_init_bios_package_attribute(enum hp_wmi_data_type attr_type,
+ union acpi_object *obj,
+ const char *guid, int min_elements,
+ int instance_id)
+{
+ struct kobject *attr_name_kobj, *duplicate;
+ union acpi_object *elements;
+ struct kset *temp_kset;
+
+ char *str_value = NULL;
+ int str_len;
+ int ret = 0;
+
+ /* Take action appropriate to each ACPI TYPE */
+ if (obj->package.count < min_elements) {
+ pr_err("ACPI-package does not have enough elements: %d < %d\n",
+ obj->package.count, min_elements);
+ goto pack_attr_exit;
+ }
+
+ elements = obj->package.elements;
+
+ /* sanity checking */
+ if (elements[NAME].type != ACPI_TYPE_STRING) {
+ pr_debug("incorrect element type\n");
+ goto pack_attr_exit;
+ }
+ if (strlen(elements[NAME].string.pointer) == 0) {
+ pr_debug("empty attribute found\n");
+ goto pack_attr_exit;
+ }
+
+ if (attr_type == HPWMI_PASSWORD_TYPE)
+ temp_kset = bioscfg_drv.authentication_dir_kset;
+ else
+ temp_kset = bioscfg_drv.main_dir_kset;
+
+ /* convert attribute name to string */
+ ret = hp_convert_hexstr_to_str(elements[NAME].string.pointer,
+ elements[NAME].string.length,
+ &str_value, &str_len);
+
+ if (ret) {
+ pr_debug("Failed to populate integer package data. Error [0%0x]\n",
+ ret);
+ kfree(str_value);
+ return ret;
+ }
+
+ /* All duplicate attributes found are ignored */
+ duplicate = kset_find_obj(temp_kset, str_value);
+ if (duplicate) {
+ pr_debug("Duplicate attribute name found - %s\n", str_value);
+ /* kset_find_obj() returns a reference */
+ kobject_put(duplicate);
+ goto pack_attr_exit;
+ }
+
+ /* build attribute */
+ attr_name_kobj = kzalloc(sizeof(*attr_name_kobj), GFP_KERNEL);
+ if (!attr_name_kobj) {
+ ret = -ENOMEM;
+ goto pack_attr_exit;
+ }
+
+ attr_name_kobj->kset = temp_kset;
+
+ ret = kobject_init_and_add(attr_name_kobj, &attr_name_ktype,
+ NULL, "%s", str_value);
+
+ if (ret) {
+ kobject_put(attr_name_kobj);
+ goto pack_attr_exit;
+ }
+
+ /* enumerate all of these attributes */
+ switch (attr_type) {
+ case HPWMI_STRING_TYPE:
+ ret = hp_populate_string_package_data(elements,
+ instance_id,
+ attr_name_kobj);
+ break;
+ case HPWMI_INTEGER_TYPE:
+ ret = hp_populate_integer_package_data(elements,
+ instance_id,
+ attr_name_kobj);
+ break;
+ case HPWMI_ENUMERATION_TYPE:
+ ret = hp_populate_enumeration_package_data(elements,
+ instance_id,
+ attr_name_kobj);
+ break;
+ case HPWMI_ORDERED_LIST_TYPE:
+ ret = hp_populate_ordered_list_package_data(elements,
+ instance_id,
+ attr_name_kobj);
+ break;
+ case HPWMI_PASSWORD_TYPE:
+ ret = hp_populate_password_package_data(elements,
+ instance_id,
+ attr_name_kobj);
+ break;
+ default:
+ pr_debug("Unknown attribute type found: 0x%x\n", attr_type);
+ break;
+ }
+
+pack_attr_exit:
+ kfree(str_value);
+ return ret;
+}
+
+static int hp_init_bios_buffer_attribute(enum hp_wmi_data_type attr_type,
+ union acpi_object *obj,
+ const char *guid, int min_elements,
+ int instance_id)
+{
+ struct kobject *attr_name_kobj, *duplicate;
+ struct kset *temp_kset;
+ char str[MAX_BUFF_SIZE];
+
+ char *temp_str = NULL;
+ char *str_value = NULL;
+ u8 *buffer_ptr = NULL;
+ int buffer_size;
+ int ret = 0;
+
+ buffer_size = obj->buffer.length;
+ buffer_ptr = obj->buffer.pointer;
+
+ ret = hp_get_string_from_buffer(&buffer_ptr,
+ &buffer_size, str, MAX_BUFF_SIZE);
+
+ if (ret < 0)
+ goto buff_attr_exit;
+
+ if (attr_type == HPWMI_PASSWORD_TYPE ||
+ attr_type == HPWMI_SECURE_PLATFORM_TYPE)
+ temp_kset = bioscfg_drv.authentication_dir_kset;
+ else
+ temp_kset = bioscfg_drv.main_dir_kset;
+
+ /* All duplicate attributes found are ignored */
+ duplicate = kset_find_obj(temp_kset, str);
+ if (duplicate) {
+ pr_debug("Duplicate attribute name found - %s\n", str);
+ /* kset_find_obj() returns a reference */
+ kobject_put(duplicate);
+ goto buff_attr_exit;
+ }
+
+ /* build attribute */
+ attr_name_kobj = kzalloc(sizeof(*attr_name_kobj), GFP_KERNEL);
+ if (!attr_name_kobj) {
+ ret = -ENOMEM;
+ goto buff_attr_exit;
+ }
+
+ attr_name_kobj->kset = temp_kset;
+
+ temp_str = str;
+ if (attr_type == HPWMI_SECURE_PLATFORM_TYPE)
+ temp_str = "SPM";
+
+ ret = kobject_init_and_add(attr_name_kobj,
+ &attr_name_ktype, NULL, "%s", temp_str);
+ if (ret) {
+ kobject_put(attr_name_kobj);
+ goto buff_attr_exit;
+ }
+
+ /* enumerate all of these attributes */
+ switch (attr_type) {
+ case HPWMI_STRING_TYPE:
+ ret = hp_populate_string_buffer_data(buffer_ptr,
+ &buffer_size,
+ instance_id,
+ attr_name_kobj);
+ break;
+ case HPWMI_INTEGER_TYPE:
+ ret = hp_populate_integer_buffer_data(buffer_ptr,
+ &buffer_size,
+ instance_id,
+ attr_name_kobj);
+ break;
+ case HPWMI_ENUMERATION_TYPE:
+ ret = hp_populate_enumeration_buffer_data(buffer_ptr,
+ &buffer_size,
+ instance_id,
+ attr_name_kobj);
+ break;
+ case HPWMI_ORDERED_LIST_TYPE:
+ ret = hp_populate_ordered_list_buffer_data(buffer_ptr,
+ &buffer_size,
+ instance_id,
+ attr_name_kobj);
+ break;
+ case HPWMI_PASSWORD_TYPE:
+ ret = hp_populate_password_buffer_data(buffer_ptr,
+ &buffer_size,
+ instance_id,
+ attr_name_kobj);
+ break;
+ default:
+ pr_debug("Unknown attribute type found: 0x%x\n", attr_type);
+ break;
+ }
+
+buff_attr_exit:
+ kfree(str_value);
+ return ret;
+}
+
+/**
+ * hp_init_bios_attributes() - Initialize all attributes for a type
+ * @attr_type: The attribute type to initialize
+ * @guid: The WMI GUID associated with this type to initialize
+ *
+ * Initialize all 5 types of attributes: enumeration, integer,
+ * string, password, ordered list object. Populates each attribute types
+ * respective properties under sysfs files
+ */
+static int hp_init_bios_attributes(enum hp_wmi_data_type attr_type, const char *guid)
+{
+ union acpi_object *obj = NULL;
+ int min_elements;
+
+ /* instance_id needs to be reset for each type GUID
+ * also, instance IDs are unique within GUID but not across
+ */
+ int instance_id = 0;
+ int cur_instance_id = instance_id;
+ int ret = 0;
+
+ ret = hp_alloc_attributes_data(attr_type);
+ if (ret)
+ return ret;
+
+ switch (attr_type) {
+ case HPWMI_STRING_TYPE:
+ min_elements = STR_ELEM_CNT;
+ break;
+ case HPWMI_INTEGER_TYPE:
+ min_elements = INT_ELEM_CNT;
+ break;
+ case HPWMI_ENUMERATION_TYPE:
+ min_elements = ENUM_ELEM_CNT;
+ break;
+ case HPWMI_ORDERED_LIST_TYPE:
+ min_elements = ORD_ELEM_CNT;
+ break;
+ case HPWMI_PASSWORD_TYPE:
+ min_elements = PSWD_ELEM_CNT;
+ break;
+ default:
+ pr_err("Error: Unknown attr_type: %d\n", attr_type);
+ return -EINVAL;
+ }
+
+ /* need to use specific instance_id and guid combination to get right data */
+ obj = hp_get_wmiobj_pointer(instance_id, guid);
+ if (!obj)
+ return -ENODEV;
+
+ mutex_lock(&bioscfg_drv.mutex);
+ while (obj) {
+ /* Take action appropriate to each ACPI TYPE */
+ if (obj->type == ACPI_TYPE_PACKAGE) {
+ ret = hp_init_bios_package_attribute(attr_type, obj,
+ guid, min_elements,
+ cur_instance_id);
+
+ } else if (obj->type == ACPI_TYPE_BUFFER) {
+ ret = hp_init_bios_buffer_attribute(attr_type, obj,
+ guid, min_elements,
+ cur_instance_id);
+
+ } else {
+ pr_err("Expected ACPI-package or buffer type, got: %d\n",
+ obj->type);
+ ret = -EIO;
+ goto err_attr_init;
+ }
+
+ /*
+ * Failure reported in one attribute must not
+ * stop process of the remaining attribute values.
+ */
+ if (ret >= 0)
+ cur_instance_id++;
+
+ kfree(obj);
+ instance_id++;
+ obj = hp_get_wmiobj_pointer(instance_id, guid);
+ }
+
+err_attr_init:
+ mutex_unlock(&bioscfg_drv.mutex);
+ kfree(obj);
+ return ret;
+}
+
+static int __init hp_init(void)
+{
+ int ret;
+ int hp_bios_capable = wmi_has_guid(HP_WMI_BIOS_GUID);
+ int set_bios_settings = wmi_has_guid(HP_WMI_SET_BIOS_SETTING_GUID);
+
+ if (!hp_bios_capable) {
+ pr_err("Unable to run on non-HP system\n");
+ return -ENODEV;
+ }
+
+ if (!set_bios_settings) {
+ pr_err("Unable to set BIOS settings on HP systems\n");
+ return -ENODEV;
+ }
+
+ ret = hp_init_attr_set_interface();
+ if (ret)
+ return ret;
+
+ ret = fw_attributes_class_get(&fw_attr_class);
+ if (ret)
+ goto err_unregister_class;
+
+ bioscfg_drv.class_dev = device_create(fw_attr_class, NULL, MKDEV(0, 0),
+ NULL, "%s", DRIVER_NAME);
+ if (IS_ERR(bioscfg_drv.class_dev)) {
+ ret = PTR_ERR(bioscfg_drv.class_dev);
+ goto err_unregister_class;
+ }
+
+ bioscfg_drv.main_dir_kset = kset_create_and_add("attributes", NULL,
+ &bioscfg_drv.class_dev->kobj);
+ if (!bioscfg_drv.main_dir_kset) {
+ ret = -ENOMEM;
+ pr_debug("Failed to create and add attributes\n");
+ goto err_destroy_classdev;
+ }
+
+ bioscfg_drv.authentication_dir_kset = kset_create_and_add("authentication", NULL,
+ &bioscfg_drv.class_dev->kobj);
+ if (!bioscfg_drv.authentication_dir_kset) {
+ ret = -ENOMEM;
+ pr_debug("Failed to create and add authentication\n");
+ goto err_release_attributes_data;
+ }
+
+ /*
+ * sysfs level attributes.
+ * - pending_reboot
+ */
+ ret = create_attributes_level_sysfs_files();
+ if (ret)
+ pr_debug("Failed to create sysfs level attributes\n");
+
+ ret = hp_init_bios_attributes(HPWMI_STRING_TYPE, HP_WMI_BIOS_STRING_GUID);
+ if (ret)
+ pr_debug("Failed to populate string type attributes\n");
+
+ ret = hp_init_bios_attributes(HPWMI_INTEGER_TYPE, HP_WMI_BIOS_INTEGER_GUID);
+ if (ret)
+ pr_debug("Failed to populate integer type attributes\n");
+
+ ret = hp_init_bios_attributes(HPWMI_ENUMERATION_TYPE, HP_WMI_BIOS_ENUMERATION_GUID);
+ if (ret)
+ pr_debug("Failed to populate enumeration type attributes\n");
+
+ ret = hp_init_bios_attributes(HPWMI_ORDERED_LIST_TYPE, HP_WMI_BIOS_ORDERED_LIST_GUID);
+ if (ret)
+ pr_debug("Failed to populate ordered list object type attributes\n");
+
+ ret = hp_init_bios_attributes(HPWMI_PASSWORD_TYPE, HP_WMI_BIOS_PASSWORD_GUID);
+ if (ret)
+ pr_debug("Failed to populate password object type attributes\n");
+
+ bioscfg_drv.spm_data.attr_name_kobj = NULL;
+ ret = hp_add_other_attributes(HPWMI_SECURE_PLATFORM_TYPE);
+ if (ret)
+ pr_debug("Failed to populate secure platform object type attribute\n");
+
+ bioscfg_drv.sure_start_attr_kobj = NULL;
+ ret = hp_add_other_attributes(HPWMI_SURE_START_TYPE);
+ if (ret)
+ pr_debug("Failed to populate sure start object type attribute\n");
+
+ return 0;
+
+err_release_attributes_data:
+ release_attributes_data();
+
+err_destroy_classdev:
+ device_destroy(fw_attr_class, MKDEV(0, 0));
+
+err_unregister_class:
+ fw_attributes_class_put();
+ hp_exit_attr_set_interface();
+
+ return ret;
+}
+
+static void __exit hp_exit(void)
+{
+ release_attributes_data();
+ device_destroy(fw_attr_class, MKDEV(0, 0));
+
+ fw_attributes_class_put();
+ hp_exit_attr_set_interface();
+}
+
+module_init(hp_init);
+module_exit(hp_exit);
diff --git a/drivers/platform/x86/hp/hp-bioscfg/bioscfg.h b/drivers/platform/x86/hp/hp-bioscfg/bioscfg.h
new file mode 100644
index 0000000000..3166ef328e
--- /dev/null
+++ b/drivers/platform/x86/hp/hp-bioscfg/bioscfg.h
@@ -0,0 +1,487 @@
+/* SPDX-License-Identifier: GPL-2.0
+ *
+ * Definitions for kernel modules using hp_bioscfg driver
+ *
+ * Copyright (c) 2022 HP Development Company, L.P.
+ */
+
+#ifndef _HP_BIOSCFG_H_
+#define _HP_BIOSCFG_H_
+
+#include <linux/wmi.h>
+#include <linux/types.h>
+#include <linux/device.h>
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/nls.h>
+
+#define DRIVER_NAME "hp-bioscfg"
+
+#define MAX_BUFF_SIZE 512
+#define MAX_KEY_MOD_SIZE 256
+#define MAX_PASSWD_SIZE 64
+#define MAX_PREREQUISITES_SIZE 20
+#define MAX_REQ_ELEM_SIZE 128
+#define MAX_VALUES_SIZE 16
+#define MAX_ENCODINGS_SIZE 16
+#define MAX_ELEMENTS_SIZE 16
+
+#define SPM_STR_DESC "Secure Platform Management"
+#define SPM_STR "SPM"
+#define SURE_START_DESC "Sure Start"
+#define SURE_START_STR "Sure_Start"
+#define SETUP_PASSWD "Setup Password"
+#define POWER_ON_PASSWD "Power-On Password"
+
+#define LANG_CODE_STR "en_US.UTF-8"
+#define SCHEDULE_POWER_ON "Scheduled Power-On"
+
+#define COMMA_SEP ","
+#define SEMICOLON_SEP ";"
+
+/* Sure Admin Functions */
+
+#define UTF_PREFIX "<utf-16/>"
+#define BEAM_PREFIX "<BEAM/>"
+
+enum mechanism_values {
+ PASSWORD = 0x00,
+ SIGNING_KEY = 0x01,
+ ENDORSEMENT_KEY = 0x02,
+};
+
+#define BIOS_ADMIN "bios-admin"
+#define POWER_ON "power-on"
+#define BIOS_SPM "enhanced-bios-auth"
+
+#define PASSWD_MECHANISM_TYPES "password"
+
+#define HP_WMI_BIOS_GUID "5FB7F034-2C63-45e9-BE91-3D44E2C707E4"
+
+#define HP_WMI_BIOS_STRING_GUID "988D08E3-68F4-4c35-AF3E-6A1B8106F83C"
+#define HP_WMI_BIOS_INTEGER_GUID "8232DE3D-663D-4327-A8F4-E293ADB9BF05"
+#define HP_WMI_BIOS_ENUMERATION_GUID "2D114B49-2DFB-4130-B8FE-4A3C09E75133"
+#define HP_WMI_BIOS_ORDERED_LIST_GUID "14EA9746-CE1F-4098-A0E0-7045CB4DA745"
+#define HP_WMI_BIOS_PASSWORD_GUID "322F2028-0F84-4901-988E-015176049E2D"
+#define HP_WMI_SET_BIOS_SETTING_GUID "1F4C91EB-DC5C-460b-951D-C7CB9B4B8D5E"
+
+enum hp_wmi_spm_commandtype {
+ HPWMI_SECUREPLATFORM_GET_STATE = 0x10,
+ HPWMI_SECUREPLATFORM_SET_KEK = 0x11,
+ HPWMI_SECUREPLATFORM_SET_SK = 0x12,
+};
+
+enum hp_wmi_surestart_commandtype {
+ HPWMI_SURESTART_GET_LOG_COUNT = 0x01,
+ HPWMI_SURESTART_GET_LOG = 0x02,
+};
+
+enum hp_wmi_command {
+ HPWMI_READ = 0x01,
+ HPWMI_WRITE = 0x02,
+ HPWMI_ODM = 0x03,
+ HPWMI_SURESTART = 0x20006,
+ HPWMI_GM = 0x20008,
+ HPWMI_SECUREPLATFORM = 0x20010,
+};
+
+struct bios_return {
+ u32 sigpass;
+ u32 return_code;
+};
+
+enum wmi_error_values {
+ SUCCESS = 0x00,
+ CMD_FAILED = 0x01,
+ INVALID_SIGN = 0x02,
+ INVALID_CMD_VALUE = 0x03,
+ INVALID_CMD_TYPE = 0x04,
+ INVALID_DATA_SIZE = 0x05,
+ INVALID_CMD_PARAM = 0x06,
+ ENCRYP_CMD_REQUIRED = 0x07,
+ NO_SECURE_SESSION = 0x08,
+ SECURE_SESSION_FOUND = 0x09,
+ SECURE_SESSION_FAILED = 0x0A,
+ AUTH_FAILED = 0x0B,
+ INVALID_BIOS_AUTH = 0x0E,
+ NONCE_DID_NOT_MATCH = 0x18,
+ GENERIC_ERROR = 0x1C,
+ BIOS_ADMIN_POLICY_NOT_MET = 0x28,
+ BIOS_ADMIN_NOT_SET = 0x38,
+ P21_NO_PROVISIONED = 0x1000,
+ P21_PROVISION_IN_PROGRESS = 0x1001,
+ P21_IN_USE = 0x1002,
+ HEP_NOT_ACTIVE = 0x1004,
+ HEP_ALREADY_SET = 0x1006,
+ HEP_CHECK_STATE = 0x1007,
+};
+
+struct common_data {
+ u8 display_name[MAX_BUFF_SIZE];
+ u8 path[MAX_BUFF_SIZE];
+ u32 is_readonly;
+ u32 display_in_ui;
+ u32 requires_physical_presence;
+ u32 sequence;
+ u32 prerequisites_size;
+ u8 prerequisites[MAX_PREREQUISITES_SIZE][MAX_BUFF_SIZE];
+ u32 security_level;
+};
+
+struct string_data {
+ struct common_data common;
+ struct kobject *attr_name_kobj;
+ u8 current_value[MAX_BUFF_SIZE];
+ u8 new_value[MAX_BUFF_SIZE];
+ u32 min_length;
+ u32 max_length;
+};
+
+struct integer_data {
+ struct common_data common;
+ struct kobject *attr_name_kobj;
+ u32 current_value;
+ u32 new_value;
+ u32 lower_bound;
+ u32 upper_bound;
+ u32 scalar_increment;
+};
+
+struct enumeration_data {
+ struct common_data common;
+ struct kobject *attr_name_kobj;
+ u8 current_value[MAX_BUFF_SIZE];
+ u8 new_value[MAX_BUFF_SIZE];
+ u32 possible_values_size;
+ u8 possible_values[MAX_VALUES_SIZE][MAX_BUFF_SIZE];
+};
+
+struct ordered_list_data {
+ struct common_data common;
+ struct kobject *attr_name_kobj;
+ u8 current_value[MAX_BUFF_SIZE];
+ u8 new_value[MAX_BUFF_SIZE];
+ u32 elements_size;
+ u8 elements[MAX_ELEMENTS_SIZE][MAX_BUFF_SIZE];
+};
+
+struct password_data {
+ struct common_data common;
+ struct kobject *attr_name_kobj;
+ u8 current_password[MAX_PASSWD_SIZE];
+ u8 new_password[MAX_PASSWD_SIZE];
+ u32 min_password_length;
+ u32 max_password_length;
+ u32 encodings_size;
+ u8 encodings[MAX_ENCODINGS_SIZE][MAX_BUFF_SIZE];
+ bool is_enabled;
+
+ /*
+ * 'role' identifies the type of authentication.
+ * Two known types are bios-admin and power-on.
+ * 'bios-admin' represents BIOS administrator password
+ * 'power-on' represents a password required to use the system
+ */
+ u32 role;
+
+ /*
+ * 'mechanism' represents the means of authentication.
+ * Only supported type currently is "password"
+ */
+ u32 mechanism;
+};
+
+struct secure_platform_data {
+ struct kobject *attr_name_kobj;
+ u8 attribute_name[MAX_BUFF_SIZE];
+ u8 *endorsement_key;
+ u8 *signing_key;
+ u8 *auth_token;
+ bool is_enabled;
+ u32 mechanism;
+};
+
+struct bioscfg_priv {
+ struct kset *authentication_dir_kset;
+ struct kset *main_dir_kset;
+ struct device *class_dev;
+ struct string_data *string_data;
+ u32 string_instances_count;
+ struct integer_data *integer_data;
+ u32 integer_instances_count;
+ struct enumeration_data *enumeration_data;
+ u32 enumeration_instances_count;
+ struct ordered_list_data *ordered_list_data;
+ u32 ordered_list_instances_count;
+ struct password_data *password_data;
+ u32 password_instances_count;
+
+ struct kobject *sure_start_attr_kobj;
+ struct secure_platform_data spm_data;
+ u8 display_name_language_code[MAX_BUFF_SIZE];
+ bool pending_reboot;
+ struct mutex mutex;
+};
+
+/* global structure used by multiple WMI interfaces */
+extern struct bioscfg_priv bioscfg_drv;
+
+enum hp_wmi_data_type {
+ HPWMI_STRING_TYPE,
+ HPWMI_INTEGER_TYPE,
+ HPWMI_ENUMERATION_TYPE,
+ HPWMI_ORDERED_LIST_TYPE,
+ HPWMI_PASSWORD_TYPE,
+ HPWMI_SECURE_PLATFORM_TYPE,
+ HPWMI_SURE_START_TYPE,
+};
+
+enum hp_wmi_data_elements {
+ /* Common elements */
+ NAME = 0,
+ VALUE = 1,
+ PATH = 2,
+ IS_READONLY = 3,
+ DISPLAY_IN_UI = 4,
+ REQUIRES_PHYSICAL_PRESENCE = 5,
+ SEQUENCE = 6,
+ PREREQUISITES_SIZE = 7,
+ PREREQUISITES = 8,
+ SECURITY_LEVEL = 9,
+
+ /* String elements */
+ STR_MIN_LENGTH = 10,
+ STR_MAX_LENGTH = 11,
+ STR_ELEM_CNT = 12,
+
+ /* Integer elements */
+ INT_LOWER_BOUND = 10,
+ INT_UPPER_BOUND = 11,
+ INT_SCALAR_INCREMENT = 12,
+ INT_ELEM_CNT = 13,
+
+ /* Enumeration elements */
+ ENUM_CURRENT_VALUE = 10,
+ ENUM_SIZE = 11,
+ ENUM_POSSIBLE_VALUES = 12,
+ ENUM_ELEM_CNT = 13,
+
+ /* Ordered list elements */
+ ORD_LIST_SIZE = 10,
+ ORD_LIST_ELEMENTS = 11,
+ ORD_ELEM_CNT = 12,
+
+ /* Password elements */
+ PSWD_MIN_LENGTH = 10,
+ PSWD_MAX_LENGTH = 11,
+ PSWD_SIZE = 12,
+ PSWD_ENCODINGS = 13,
+ PSWD_IS_SET = 14,
+ PSWD_ELEM_CNT = 15,
+};
+
+#define GET_INSTANCE_ID(type) \
+ static int get_##type##_instance_id(struct kobject *kobj) \
+ { \
+ int i; \
+ \
+ for (i = 0; i <= bioscfg_drv.type##_instances_count; i++) { \
+ if (!strcmp(kobj->name, bioscfg_drv.type##_data[i].attr_name_kobj->name)) \
+ return i; \
+ } \
+ return -EIO; \
+ }
+
+#define ATTRIBUTE_S_PROPERTY_SHOW(name, type) \
+ static ssize_t name##_show(struct kobject *kobj, struct kobj_attribute *attr, \
+ char *buf) \
+ { \
+ int i = get_##type##_instance_id(kobj); \
+ if (i >= 0) \
+ return sysfs_emit(buf, "%s\n", bioscfg_drv.type##_data[i].name); \
+ return -EIO; \
+ }
+
+#define ATTRIBUTE_N_PROPERTY_SHOW(name, type) \
+ static ssize_t name##_show(struct kobject *kobj, struct kobj_attribute *attr, \
+ char *buf) \
+ { \
+ int i = get_##type##_instance_id(kobj); \
+ if (i >= 0) \
+ return sysfs_emit(buf, "%d\n", bioscfg_drv.type##_data[i].name); \
+ return -EIO; \
+ }
+
+#define ATTRIBUTE_PROPERTY_STORE(curr_val, type) \
+ static ssize_t curr_val##_store(struct kobject *kobj, \
+ struct kobj_attribute *attr, \
+ const char *buf, size_t count) \
+ { \
+ char *attr_value = NULL; \
+ int i; \
+ int ret = -EIO; \
+ \
+ attr_value = kstrdup(buf, GFP_KERNEL); \
+ if (!attr_value) \
+ return -ENOMEM; \
+ \
+ ret = hp_enforce_single_line_input(attr_value, count); \
+ if (!ret) { \
+ i = get_##type##_instance_id(kobj); \
+ if (i >= 0) \
+ ret = validate_##type##_input(i, attr_value); \
+ } \
+ if (!ret) \
+ ret = hp_set_attribute(kobj->name, attr_value); \
+ if (!ret) { \
+ update_##type##_value(i, attr_value); \
+ if (bioscfg_drv.type##_data[i].common.requires_physical_presence) \
+ hp_set_reboot_and_signal_event(); \
+ } \
+ hp_clear_all_credentials(); \
+ kfree(attr_value); \
+ \
+ return ret ? ret : count; \
+ }
+
+#define ATTRIBUTE_SPM_N_PROPERTY_SHOW(name, type) \
+ static ssize_t name##_show(struct kobject *kobj, struct kobj_attribute *attr, char *buf) \
+ { \
+ return sysfs_emit(buf, "%d\n", bioscfg_drv.type##_data.name); \
+ }
+
+#define ATTRIBUTE_SPM_S_PROPERTY_SHOW(name, type) \
+ static ssize_t name##_show(struct kobject *kobj, struct kobj_attribute *attr, char *buf) \
+ { \
+ return sysfs_emit(buf, "%s\n", bioscfg_drv.type##_data.name); \
+ }
+
+#define ATTRIBUTE_VALUES_PROPERTY_SHOW(name, type, sep) \
+ static ssize_t name##_show(struct kobject *kobj, \
+ struct kobj_attribute *attr, char *buf) \
+ { \
+ int i; \
+ int len = 0; \
+ int instance_id = get_##type##_instance_id(kobj); \
+ \
+ if (instance_id < 0) \
+ return 0; \
+ \
+ for (i = 0; i < bioscfg_drv.type##_data[instance_id].name##_size; i++) { \
+ if (i) \
+ len += sysfs_emit_at(buf, len, "%s", sep); \
+ \
+ len += sysfs_emit_at(buf, len, "%s", \
+ bioscfg_drv.type##_data[instance_id].name[i]); \
+ } \
+ len += sysfs_emit_at(buf, len, "\n"); \
+ return len; \
+ }
+
+#define ATTRIBUTE_S_COMMON_PROPERTY_SHOW(name, type) \
+ static ssize_t name##_show(struct kobject *kobj, struct kobj_attribute *attr, \
+ char *buf) \
+ { \
+ int i = get_##type##_instance_id(kobj); \
+ if (i >= 0) \
+ return sysfs_emit(buf, "%s\n", bioscfg_drv.type##_data[i].common.name); \
+ return -EIO; \
+ }
+
+extern struct kobj_attribute common_display_langcode;
+
+/* Prototypes */
+
+/* String attributes */
+int hp_populate_string_buffer_data(u8 *buffer_ptr, u32 *buffer_size,
+ int instance_id,
+ struct kobject *attr_name_kobj);
+int hp_alloc_string_data(void);
+void hp_exit_string_attributes(void);
+int hp_populate_string_package_data(union acpi_object *str_obj,
+ int instance_id,
+ struct kobject *attr_name_kobj);
+
+/* Integer attributes */
+int hp_populate_integer_buffer_data(u8 *buffer_ptr, u32 *buffer_size,
+ int instance_id,
+ struct kobject *attr_name_kobj);
+int hp_alloc_integer_data(void);
+void hp_exit_integer_attributes(void);
+int hp_populate_integer_package_data(union acpi_object *integer_obj,
+ int instance_id,
+ struct kobject *attr_name_kobj);
+
+/* Enumeration attributes */
+int hp_populate_enumeration_buffer_data(u8 *buffer_ptr, u32 *buffer_size,
+ int instance_id,
+ struct kobject *attr_name_kobj);
+int hp_alloc_enumeration_data(void);
+void hp_exit_enumeration_attributes(void);
+int hp_populate_enumeration_package_data(union acpi_object *enum_obj,
+ int instance_id,
+ struct kobject *attr_name_kobj);
+
+/* Ordered list */
+int hp_populate_ordered_list_buffer_data(u8 *buffer_ptr,
+ u32 *buffer_size,
+ int instance_id,
+ struct kobject *attr_name_kobj);
+int hp_alloc_ordered_list_data(void);
+void hp_exit_ordered_list_attributes(void);
+int hp_populate_ordered_list_package_data(union acpi_object *order_obj,
+ int instance_id,
+ struct kobject *attr_name_kobj);
+
+/* Password authentication attributes */
+int hp_populate_password_buffer_data(u8 *buffer_ptr, u32 *buffer_size,
+ int instance_id,
+ struct kobject *attr_name_kobj);
+int hp_populate_password_package_data(union acpi_object *password_obj,
+ int instance_id,
+ struct kobject *attr_name_kobj);
+int hp_alloc_password_data(void);
+int hp_get_password_instance_for_type(const char *name);
+int hp_clear_all_credentials(void);
+int hp_set_attribute(const char *a_name, const char *a_value);
+
+/* SPM attributes */
+void hp_exit_password_attributes(void);
+void hp_exit_secure_platform_attributes(void);
+int hp_populate_secure_platform_data(struct kobject *attr_name_kobj);
+int hp_populate_security_buffer(u16 *buffer, const char *authentication);
+
+/* Bios Attributes interface */
+int hp_wmi_set_bios_setting(u16 *input_buffer, u32 input_size);
+int hp_wmi_perform_query(int query, enum hp_wmi_command command,
+ void *buffer, u32 insize, u32 outsize);
+
+/* Sure Start attributes */
+void hp_exit_sure_start_attributes(void);
+int hp_populate_sure_start_data(struct kobject *attr_name_kobj);
+
+/* Bioscfg */
+
+void hp_exit_attr_set_interface(void);
+int hp_init_attr_set_interface(void);
+size_t hp_calculate_string_buffer(const char *str);
+size_t hp_calculate_security_buffer(const char *authentication);
+void *hp_ascii_to_utf16_unicode(u16 *p, const u8 *str);
+int hp_get_integer_from_buffer(u8 **buffer, u32 *buffer_size, u32 *integer);
+int hp_get_string_from_buffer(u8 **buffer, u32 *buffer_size, char *dst, u32 dst_size);
+int hp_convert_hexstr_to_str(const char *input, u32 input_len, char **str, int *len);
+int hp_encode_outsize_for_pvsz(int outsize);
+int hp_enforce_single_line_input(char *buf, size_t count);
+void hp_set_reboot_and_signal_event(void);
+ssize_t display_name_language_code_show(struct kobject *kobj,
+ struct kobj_attribute *attr,
+ char *buf);
+union acpi_object *hp_get_wmiobj_pointer(int instance_id, const char *guid_string);
+int hp_get_instance_count(const char *guid_string);
+void hp_update_attribute_permissions(bool isreadonly, struct kobj_attribute *current_val);
+void hp_friendly_user_name_update(char *path, const char *attr_name,
+ char *attr_display, int attr_size);
+int hp_wmi_error_and_message(int error_code);
+int hp_get_common_data_from_buffer(u8 **buffer_ptr, u32 *buffer_size, struct common_data *common);
+
+#endif
diff --git a/drivers/platform/x86/hp/hp-bioscfg/enum-attributes.c b/drivers/platform/x86/hp/hp-bioscfg/enum-attributes.c
new file mode 100644
index 0000000000..a2402d31c1
--- /dev/null
+++ b/drivers/platform/x86/hp/hp-bioscfg/enum-attributes.c
@@ -0,0 +1,457 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Functions corresponding to enumeration type attributes under
+ * BIOS Enumeration GUID for use with hp-bioscfg driver.
+ *
+ * Copyright (c) 2022 HP Development Company, L.P.
+ */
+
+#include "bioscfg.h"
+
+GET_INSTANCE_ID(enumeration);
+
+static ssize_t current_value_show(struct kobject *kobj, struct kobj_attribute *attr, char *buf)
+{
+ int instance_id = get_enumeration_instance_id(kobj);
+
+ if (instance_id < 0)
+ return -EIO;
+
+ return sysfs_emit(buf, "%s\n",
+ bioscfg_drv.enumeration_data[instance_id].current_value);
+}
+
+/**
+ * validate_enumeration_input() -
+ * Validate input of current_value against possible values
+ *
+ * @instance_id: The instance on which input is validated
+ * @buf: Input value
+ */
+static int validate_enumeration_input(int instance_id, const char *buf)
+{
+ int i;
+ int found = 0;
+ struct enumeration_data *enum_data = &bioscfg_drv.enumeration_data[instance_id];
+
+ /* Is it a read only attribute */
+ if (enum_data->common.is_readonly)
+ return -EIO;
+
+ for (i = 0; i < enum_data->possible_values_size && !found; i++)
+ if (!strcmp(enum_data->possible_values[i], buf))
+ found = 1;
+
+ if (!found)
+ return -EINVAL;
+
+ return 0;
+}
+
+static void update_enumeration_value(int instance_id, char *attr_value)
+{
+ struct enumeration_data *enum_data = &bioscfg_drv.enumeration_data[instance_id];
+
+ strscpy(enum_data->current_value,
+ attr_value,
+ sizeof(enum_data->current_value));
+}
+
+ATTRIBUTE_S_COMMON_PROPERTY_SHOW(display_name, enumeration);
+static struct kobj_attribute enumeration_display_name =
+ __ATTR_RO(display_name);
+
+ATTRIBUTE_PROPERTY_STORE(current_value, enumeration);
+static struct kobj_attribute enumeration_current_val =
+ __ATTR_RW(current_value);
+
+ATTRIBUTE_VALUES_PROPERTY_SHOW(possible_values, enumeration, SEMICOLON_SEP);
+static struct kobj_attribute enumeration_poss_val =
+ __ATTR_RO(possible_values);
+
+static ssize_t type_show(struct kobject *kobj, struct kobj_attribute *attr,
+ char *buf)
+{
+ return sysfs_emit(buf, "enumeration\n");
+}
+
+static struct kobj_attribute enumeration_type =
+ __ATTR_RO(type);
+
+static struct attribute *enumeration_attrs[] = {
+ &common_display_langcode.attr,
+ &enumeration_display_name.attr,
+ &enumeration_current_val.attr,
+ &enumeration_poss_val.attr,
+ &enumeration_type.attr,
+ NULL
+};
+
+static const struct attribute_group enumeration_attr_group = {
+ .attrs = enumeration_attrs,
+};
+
+int hp_alloc_enumeration_data(void)
+{
+ bioscfg_drv.enumeration_instances_count =
+ hp_get_instance_count(HP_WMI_BIOS_ENUMERATION_GUID);
+
+ bioscfg_drv.enumeration_data = kcalloc(bioscfg_drv.enumeration_instances_count,
+ sizeof(*bioscfg_drv.enumeration_data), GFP_KERNEL);
+ if (!bioscfg_drv.enumeration_data) {
+ bioscfg_drv.enumeration_instances_count = 0;
+ return -ENOMEM;
+ }
+ return 0;
+}
+
+/* Expected Values types associated with each element */
+static const acpi_object_type expected_enum_types[] = {
+ [NAME] = ACPI_TYPE_STRING,
+ [VALUE] = ACPI_TYPE_STRING,
+ [PATH] = ACPI_TYPE_STRING,
+ [IS_READONLY] = ACPI_TYPE_INTEGER,
+ [DISPLAY_IN_UI] = ACPI_TYPE_INTEGER,
+ [REQUIRES_PHYSICAL_PRESENCE] = ACPI_TYPE_INTEGER,
+ [SEQUENCE] = ACPI_TYPE_INTEGER,
+ [PREREQUISITES_SIZE] = ACPI_TYPE_INTEGER,
+ [PREREQUISITES] = ACPI_TYPE_STRING,
+ [SECURITY_LEVEL] = ACPI_TYPE_INTEGER,
+ [ENUM_CURRENT_VALUE] = ACPI_TYPE_STRING,
+ [ENUM_SIZE] = ACPI_TYPE_INTEGER,
+ [ENUM_POSSIBLE_VALUES] = ACPI_TYPE_STRING,
+};
+
+static int hp_populate_enumeration_elements_from_package(union acpi_object *enum_obj,
+ int enum_obj_count,
+ int instance_id)
+{
+ char *str_value = NULL;
+ int value_len;
+ u32 size = 0;
+ u32 int_value = 0;
+ int elem = 0;
+ int reqs;
+ int pos_values;
+ int ret;
+ int eloc;
+ struct enumeration_data *enum_data = &bioscfg_drv.enumeration_data[instance_id];
+
+ for (elem = 1, eloc = 1; elem < enum_obj_count; elem++, eloc++) {
+ /* ONLY look at the first ENUM_ELEM_CNT elements */
+ if (eloc == ENUM_ELEM_CNT)
+ goto exit_enumeration_package;
+
+ switch (enum_obj[elem].type) {
+ case ACPI_TYPE_STRING:
+ if (PREREQUISITES != elem && ENUM_POSSIBLE_VALUES != elem) {
+ ret = hp_convert_hexstr_to_str(enum_obj[elem].string.pointer,
+ enum_obj[elem].string.length,
+ &str_value, &value_len);
+ if (ret)
+ return -EINVAL;
+ }
+ break;
+ case ACPI_TYPE_INTEGER:
+ int_value = (u32)enum_obj[elem].integer.value;
+ break;
+ default:
+ pr_warn("Unsupported object type [%d]\n", enum_obj[elem].type);
+ continue;
+ }
+
+ /* Check that both expected and read object type match */
+ if (expected_enum_types[eloc] != enum_obj[elem].type) {
+ pr_err("Error expected type %d for elem %d, but got type %d instead\n",
+ expected_enum_types[eloc], elem, enum_obj[elem].type);
+ kfree(str_value);
+ return -EIO;
+ }
+
+ /* Assign appropriate element value to corresponding field */
+ switch (eloc) {
+ case NAME:
+ case VALUE:
+ break;
+ case PATH:
+ strscpy(enum_data->common.path, str_value,
+ sizeof(enum_data->common.path));
+ break;
+ case IS_READONLY:
+ enum_data->common.is_readonly = int_value;
+ break;
+ case DISPLAY_IN_UI:
+ enum_data->common.display_in_ui = int_value;
+ break;
+ case REQUIRES_PHYSICAL_PRESENCE:
+ enum_data->common.requires_physical_presence = int_value;
+ break;
+ case SEQUENCE:
+ enum_data->common.sequence = int_value;
+ break;
+ case PREREQUISITES_SIZE:
+ if (int_value > MAX_PREREQUISITES_SIZE) {
+ pr_warn("Prerequisites size value exceeded the maximum number of elements supported or data may be malformed\n");
+ int_value = MAX_PREREQUISITES_SIZE;
+ }
+ enum_data->common.prerequisites_size = int_value;
+
+ /*
+ * This step is needed to keep the expected
+ * element list pointing to the right obj[elem].type
+ * when the size is zero. PREREQUISITES
+ * object is omitted by BIOS when the size is
+ * zero.
+ */
+ if (int_value == 0)
+ eloc++;
+ break;
+
+ case PREREQUISITES:
+ size = min_t(u32, enum_data->common.prerequisites_size, MAX_PREREQUISITES_SIZE);
+ for (reqs = 0; reqs < size; reqs++) {
+ if (elem >= enum_obj_count) {
+ pr_err("Error enum-objects package is too small\n");
+ return -EINVAL;
+ }
+
+ ret = hp_convert_hexstr_to_str(enum_obj[elem + reqs].string.pointer,
+ enum_obj[elem + reqs].string.length,
+ &str_value, &value_len);
+
+ if (ret)
+ return -EINVAL;
+
+ strscpy(enum_data->common.prerequisites[reqs],
+ str_value,
+ sizeof(enum_data->common.prerequisites[reqs]));
+
+ kfree(str_value);
+ str_value = NULL;
+ }
+ break;
+
+ case SECURITY_LEVEL:
+ enum_data->common.security_level = int_value;
+ break;
+
+ case ENUM_CURRENT_VALUE:
+ strscpy(enum_data->current_value,
+ str_value, sizeof(enum_data->current_value));
+ break;
+ case ENUM_SIZE:
+ if (int_value > MAX_VALUES_SIZE) {
+ pr_warn("Possible number values size value exceeded the maximum number of elements supported or data may be malformed\n");
+ int_value = MAX_VALUES_SIZE;
+ }
+ enum_data->possible_values_size = int_value;
+
+ /*
+ * This step is needed to keep the expected
+ * element list pointing to the right obj[elem].type
+ * when the size is zero. POSSIBLE_VALUES
+ * object is omitted by BIOS when the size is zero.
+ */
+ if (int_value == 0)
+ eloc++;
+ break;
+
+ case ENUM_POSSIBLE_VALUES:
+ size = enum_data->possible_values_size;
+
+ for (pos_values = 0; pos_values < size && pos_values < MAX_VALUES_SIZE;
+ pos_values++) {
+ if (elem >= enum_obj_count) {
+ pr_err("Error enum-objects package is too small\n");
+ return -EINVAL;
+ }
+
+ ret = hp_convert_hexstr_to_str(enum_obj[elem + pos_values].string.pointer,
+ enum_obj[elem + pos_values].string.length,
+ &str_value, &value_len);
+
+ if (ret)
+ return -EINVAL;
+
+ /*
+ * ignore strings when possible values size
+ * is greater than MAX_VALUES_SIZE
+ */
+ if (size < MAX_VALUES_SIZE)
+ strscpy(enum_data->possible_values[pos_values],
+ str_value,
+ sizeof(enum_data->possible_values[pos_values]));
+
+ kfree(str_value);
+ str_value = NULL;
+ }
+ break;
+ default:
+ pr_warn("Invalid element: %d found in Enumeration attribute or data may be malformed\n", elem);
+ break;
+ }
+
+ kfree(str_value);
+ str_value = NULL;
+ }
+
+exit_enumeration_package:
+ kfree(str_value);
+ return 0;
+}
+
+/**
+ * hp_populate_enumeration_package_data() -
+ * Populate all properties of an instance under enumeration attribute
+ *
+ * @enum_obj: ACPI object with enumeration data
+ * @instance_id: The instance to enumerate
+ * @attr_name_kobj: The parent kernel object
+ */
+int hp_populate_enumeration_package_data(union acpi_object *enum_obj,
+ int instance_id,
+ struct kobject *attr_name_kobj)
+{
+ struct enumeration_data *enum_data = &bioscfg_drv.enumeration_data[instance_id];
+
+ enum_data->attr_name_kobj = attr_name_kobj;
+
+ hp_populate_enumeration_elements_from_package(enum_obj,
+ enum_obj->package.count,
+ instance_id);
+ hp_update_attribute_permissions(enum_data->common.is_readonly,
+ &enumeration_current_val);
+ /*
+ * Several attributes have names such "MONDAY". Friendly
+ * user nane is generated to make the name more descriptive
+ */
+ hp_friendly_user_name_update(enum_data->common.path,
+ attr_name_kobj->name,
+ enum_data->common.display_name,
+ sizeof(enum_data->common.display_name));
+ return sysfs_create_group(attr_name_kobj, &enumeration_attr_group);
+}
+
+static int hp_populate_enumeration_elements_from_buffer(u8 *buffer_ptr, u32 *buffer_size,
+ int instance_id)
+{
+ int values;
+ struct enumeration_data *enum_data = &bioscfg_drv.enumeration_data[instance_id];
+ int ret = 0;
+
+ /*
+ * Only data relevant to this driver and its functionality is
+ * read. BIOS defines the order in which each * element is
+ * read. Element 0 data is not relevant to this
+ * driver hence it is ignored. For clarity, all element names
+ * (DISPLAY_IN_UI) which defines the order in which is read
+ * and the name matches the variable where the data is stored.
+ *
+ * In earlier implementation, reported errors were ignored
+ * causing the data to remain uninitialized. It is not
+ * possible to determine if data read from BIOS is valid or
+ * not. It is for this reason functions may return a error
+ * without validating the data itself.
+ */
+
+ // VALUE:
+ ret = hp_get_string_from_buffer(&buffer_ptr, buffer_size, enum_data->current_value,
+ sizeof(enum_data->current_value));
+ if (ret < 0)
+ goto buffer_exit;
+
+ // COMMON:
+ ret = hp_get_common_data_from_buffer(&buffer_ptr, buffer_size, &enum_data->common);
+ if (ret < 0)
+ goto buffer_exit;
+
+ // ENUM_CURRENT_VALUE:
+ ret = hp_get_string_from_buffer(&buffer_ptr, buffer_size,
+ enum_data->current_value,
+ sizeof(enum_data->current_value));
+ if (ret < 0)
+ goto buffer_exit;
+
+ // ENUM_SIZE:
+ ret = hp_get_integer_from_buffer(&buffer_ptr, buffer_size,
+ &enum_data->possible_values_size);
+
+ if (enum_data->possible_values_size > MAX_VALUES_SIZE) {
+ /* Report a message and limit possible values size to maximum value */
+ pr_warn("Enum Possible size value exceeded the maximum number of elements supported or data may be malformed\n");
+ enum_data->possible_values_size = MAX_VALUES_SIZE;
+ }
+
+ // ENUM_POSSIBLE_VALUES:
+ for (values = 0; values < enum_data->possible_values_size; values++) {
+ ret = hp_get_string_from_buffer(&buffer_ptr, buffer_size,
+ enum_data->possible_values[values],
+ sizeof(enum_data->possible_values[values]));
+ if (ret < 0)
+ break;
+ }
+
+buffer_exit:
+ return ret;
+}
+
+/**
+ * hp_populate_enumeration_buffer_data() -
+ * Populate all properties of an instance under enumeration attribute
+ *
+ * @buffer_ptr: Buffer pointer
+ * @buffer_size: Buffer size
+ * @instance_id: The instance to enumerate
+ * @attr_name_kobj: The parent kernel object
+ */
+int hp_populate_enumeration_buffer_data(u8 *buffer_ptr, u32 *buffer_size,
+ int instance_id,
+ struct kobject *attr_name_kobj)
+{
+ struct enumeration_data *enum_data = &bioscfg_drv.enumeration_data[instance_id];
+ int ret = 0;
+
+ enum_data->attr_name_kobj = attr_name_kobj;
+
+ /* Populate enumeration elements */
+ ret = hp_populate_enumeration_elements_from_buffer(buffer_ptr, buffer_size,
+ instance_id);
+ if (ret < 0)
+ return ret;
+
+ hp_update_attribute_permissions(enum_data->common.is_readonly,
+ &enumeration_current_val);
+ /*
+ * Several attributes have names such "MONDAY". A Friendlier
+ * user nane is generated to make the name more descriptive
+ */
+ hp_friendly_user_name_update(enum_data->common.path,
+ attr_name_kobj->name,
+ enum_data->common.display_name,
+ sizeof(enum_data->common.display_name));
+
+ return sysfs_create_group(attr_name_kobj, &enumeration_attr_group);
+}
+
+/**
+ * hp_exit_enumeration_attributes() - Clear all attribute data
+ *
+ * Clears all data allocated for this group of attributes
+ */
+void hp_exit_enumeration_attributes(void)
+{
+ int instance_id;
+
+ for (instance_id = 0; instance_id < bioscfg_drv.enumeration_instances_count;
+ instance_id++) {
+ struct enumeration_data *enum_data = &bioscfg_drv.enumeration_data[instance_id];
+ struct kobject *attr_name_kobj = enum_data->attr_name_kobj;
+
+ if (attr_name_kobj)
+ sysfs_remove_group(attr_name_kobj, &enumeration_attr_group);
+ }
+ bioscfg_drv.enumeration_instances_count = 0;
+
+ kfree(bioscfg_drv.enumeration_data);
+ bioscfg_drv.enumeration_data = NULL;
+}
diff --git a/drivers/platform/x86/hp/hp-bioscfg/int-attributes.c b/drivers/platform/x86/hp/hp-bioscfg/int-attributes.c
new file mode 100644
index 0000000000..86b7ac63fe
--- /dev/null
+++ b/drivers/platform/x86/hp/hp-bioscfg/int-attributes.c
@@ -0,0 +1,418 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Functions corresponding to integer type attributes under
+ * BIOS Enumeration GUID for use with hp-bioscfg driver.
+ *
+ * Copyright (c) 2022 Hewlett-Packard Inc.
+ */
+
+#include "bioscfg.h"
+
+GET_INSTANCE_ID(integer);
+
+static ssize_t current_value_show(struct kobject *kobj, struct kobj_attribute *attr, char *buf)
+{
+ int instance_id = get_integer_instance_id(kobj);
+
+ if (instance_id < 0)
+ return -EIO;
+
+ return sysfs_emit(buf, "%d\n",
+ bioscfg_drv.integer_data[instance_id].current_value);
+}
+
+/**
+ * validate_integer_input() -
+ * Validate input of current_value against lower and upper bound
+ *
+ * @instance_id: The instance on which input is validated
+ * @buf: Input value
+ */
+static int validate_integer_input(int instance_id, char *buf)
+{
+ int in_val;
+ int ret;
+ struct integer_data *integer_data = &bioscfg_drv.integer_data[instance_id];
+
+ /* BIOS treats it as a read only attribute */
+ if (integer_data->common.is_readonly)
+ return -EIO;
+
+ ret = kstrtoint(buf, 10, &in_val);
+ if (ret < 0)
+ return ret;
+
+ if (in_val < integer_data->lower_bound ||
+ in_val > integer_data->upper_bound)
+ return -ERANGE;
+
+ return 0;
+}
+
+static void update_integer_value(int instance_id, char *attr_value)
+{
+ int in_val;
+ int ret;
+ struct integer_data *integer_data = &bioscfg_drv.integer_data[instance_id];
+
+ ret = kstrtoint(attr_value, 10, &in_val);
+ if (ret == 0)
+ integer_data->current_value = in_val;
+ else
+ pr_warn("Invalid integer value found: %s\n", attr_value);
+}
+
+ATTRIBUTE_S_COMMON_PROPERTY_SHOW(display_name, integer);
+static struct kobj_attribute integer_display_name =
+ __ATTR_RO(display_name);
+
+ATTRIBUTE_PROPERTY_STORE(current_value, integer);
+static struct kobj_attribute integer_current_val =
+ __ATTR_RW_MODE(current_value, 0644);
+
+ATTRIBUTE_N_PROPERTY_SHOW(lower_bound, integer);
+static struct kobj_attribute integer_lower_bound =
+ __ATTR_RO(lower_bound);
+
+ATTRIBUTE_N_PROPERTY_SHOW(upper_bound, integer);
+static struct kobj_attribute integer_upper_bound =
+ __ATTR_RO(upper_bound);
+
+ATTRIBUTE_N_PROPERTY_SHOW(scalar_increment, integer);
+static struct kobj_attribute integer_scalar_increment =
+ __ATTR_RO(scalar_increment);
+
+static ssize_t type_show(struct kobject *kobj, struct kobj_attribute *attr,
+ char *buf)
+{
+ return sysfs_emit(buf, "integer\n");
+}
+
+static struct kobj_attribute integer_type =
+ __ATTR_RO(type);
+
+static struct attribute *integer_attrs[] = {
+ &common_display_langcode.attr,
+ &integer_display_name.attr,
+ &integer_current_val.attr,
+ &integer_lower_bound.attr,
+ &integer_upper_bound.attr,
+ &integer_scalar_increment.attr,
+ &integer_type.attr,
+ NULL
+};
+
+static const struct attribute_group integer_attr_group = {
+ .attrs = integer_attrs,
+};
+
+int hp_alloc_integer_data(void)
+{
+ bioscfg_drv.integer_instances_count = hp_get_instance_count(HP_WMI_BIOS_INTEGER_GUID);
+ bioscfg_drv.integer_data = kcalloc(bioscfg_drv.integer_instances_count,
+ sizeof(*bioscfg_drv.integer_data), GFP_KERNEL);
+
+ if (!bioscfg_drv.integer_data) {
+ bioscfg_drv.integer_instances_count = 0;
+ return -ENOMEM;
+ }
+ return 0;
+}
+
+/* Expected Values types associated with each element */
+static const acpi_object_type expected_integer_types[] = {
+ [NAME] = ACPI_TYPE_STRING,
+ [VALUE] = ACPI_TYPE_STRING,
+ [PATH] = ACPI_TYPE_STRING,
+ [IS_READONLY] = ACPI_TYPE_INTEGER,
+ [DISPLAY_IN_UI] = ACPI_TYPE_INTEGER,
+ [REQUIRES_PHYSICAL_PRESENCE] = ACPI_TYPE_INTEGER,
+ [SEQUENCE] = ACPI_TYPE_INTEGER,
+ [PREREQUISITES_SIZE] = ACPI_TYPE_INTEGER,
+ [PREREQUISITES] = ACPI_TYPE_STRING,
+ [SECURITY_LEVEL] = ACPI_TYPE_INTEGER,
+ [INT_LOWER_BOUND] = ACPI_TYPE_INTEGER,
+ [INT_UPPER_BOUND] = ACPI_TYPE_INTEGER,
+ [INT_SCALAR_INCREMENT] = ACPI_TYPE_INTEGER,
+};
+
+static int hp_populate_integer_elements_from_package(union acpi_object *integer_obj,
+ int integer_obj_count,
+ int instance_id)
+{
+ char *str_value = NULL;
+ int value_len;
+ int ret;
+ u32 int_value = 0;
+ int elem;
+ int reqs;
+ int eloc;
+ int size;
+ struct integer_data *integer_data = &bioscfg_drv.integer_data[instance_id];
+
+ if (!integer_obj)
+ return -EINVAL;
+
+ for (elem = 1, eloc = 1; elem < integer_obj_count; elem++, eloc++) {
+ /* ONLY look at the first INTEGER_ELEM_CNT elements */
+ if (eloc == INT_ELEM_CNT)
+ goto exit_integer_package;
+
+ switch (integer_obj[elem].type) {
+ case ACPI_TYPE_STRING:
+ if (elem != PREREQUISITES) {
+ ret = hp_convert_hexstr_to_str(integer_obj[elem].string.pointer,
+ integer_obj[elem].string.length,
+ &str_value, &value_len);
+ if (ret)
+ continue;
+ }
+ break;
+ case ACPI_TYPE_INTEGER:
+ int_value = (u32)integer_obj[elem].integer.value;
+ break;
+ default:
+ pr_warn("Unsupported object type [%d]\n", integer_obj[elem].type);
+ continue;
+ }
+ /* Check that both expected and read object type match */
+ if (expected_integer_types[eloc] != integer_obj[elem].type) {
+ pr_err("Error expected type %d for elem %d, but got type %d instead\n",
+ expected_integer_types[eloc], elem, integer_obj[elem].type);
+ kfree(str_value);
+ return -EIO;
+ }
+ /* Assign appropriate element value to corresponding field*/
+ switch (eloc) {
+ case VALUE:
+ ret = kstrtoint(str_value, 10, &int_value);
+ if (ret)
+ continue;
+
+ integer_data->current_value = int_value;
+ break;
+ case PATH:
+ strscpy(integer_data->common.path, str_value,
+ sizeof(integer_data->common.path));
+ break;
+ case IS_READONLY:
+ integer_data->common.is_readonly = int_value;
+ break;
+ case DISPLAY_IN_UI:
+ integer_data->common.display_in_ui = int_value;
+ break;
+ case REQUIRES_PHYSICAL_PRESENCE:
+ integer_data->common.requires_physical_presence = int_value;
+ break;
+ case SEQUENCE:
+ integer_data->common.sequence = int_value;
+ break;
+ case PREREQUISITES_SIZE:
+ if (int_value > MAX_PREREQUISITES_SIZE) {
+ pr_warn("Prerequisites size value exceeded the maximum number of elements supported or data may be malformed\n");
+ int_value = MAX_PREREQUISITES_SIZE;
+ }
+ integer_data->common.prerequisites_size = int_value;
+
+ /*
+ * This step is needed to keep the expected
+ * element list pointing to the right obj[elem].type
+ * when the size is zero. PREREQUISITES
+ * object is omitted by BIOS when the size is
+ * zero.
+ */
+ if (integer_data->common.prerequisites_size == 0)
+ eloc++;
+ break;
+ case PREREQUISITES:
+ size = min_t(u32, integer_data->common.prerequisites_size, MAX_PREREQUISITES_SIZE);
+
+ for (reqs = 0; reqs < size; reqs++) {
+ if (elem >= integer_obj_count) {
+ pr_err("Error elem-objects package is too small\n");
+ return -EINVAL;
+ }
+
+ ret = hp_convert_hexstr_to_str(integer_obj[elem + reqs].string.pointer,
+ integer_obj[elem + reqs].string.length,
+ &str_value, &value_len);
+
+ if (ret)
+ continue;
+
+ strscpy(integer_data->common.prerequisites[reqs],
+ str_value,
+ sizeof(integer_data->common.prerequisites[reqs]));
+ kfree(str_value);
+ str_value = NULL;
+ }
+ break;
+
+ case SECURITY_LEVEL:
+ integer_data->common.security_level = int_value;
+ break;
+ case INT_LOWER_BOUND:
+ integer_data->lower_bound = int_value;
+ break;
+ case INT_UPPER_BOUND:
+ integer_data->upper_bound = int_value;
+ break;
+ case INT_SCALAR_INCREMENT:
+ integer_data->scalar_increment = int_value;
+ break;
+ default:
+ pr_warn("Invalid element: %d found in Integer attribute or data may be malformed\n", elem);
+ break;
+ }
+
+ kfree(str_value);
+ str_value = NULL;
+ }
+exit_integer_package:
+ kfree(str_value);
+ return 0;
+}
+
+/**
+ * hp_populate_integer_package_data() -
+ * Populate all properties of an instance under integer attribute
+ *
+ * @integer_obj: ACPI object with integer data
+ * @instance_id: The instance to enumerate
+ * @attr_name_kobj: The parent kernel object
+ */
+int hp_populate_integer_package_data(union acpi_object *integer_obj,
+ int instance_id,
+ struct kobject *attr_name_kobj)
+{
+ struct integer_data *integer_data = &bioscfg_drv.integer_data[instance_id];
+
+ integer_data->attr_name_kobj = attr_name_kobj;
+ hp_populate_integer_elements_from_package(integer_obj,
+ integer_obj->package.count,
+ instance_id);
+ hp_update_attribute_permissions(integer_data->common.is_readonly,
+ &integer_current_val);
+ hp_friendly_user_name_update(integer_data->common.path,
+ attr_name_kobj->name,
+ integer_data->common.display_name,
+ sizeof(integer_data->common.display_name));
+ return sysfs_create_group(attr_name_kobj, &integer_attr_group);
+}
+
+static int hp_populate_integer_elements_from_buffer(u8 *buffer_ptr, u32 *buffer_size,
+ int instance_id)
+{
+ char *dst = NULL;
+ int dst_size = *buffer_size / sizeof(u16);
+ struct integer_data *integer_data = &bioscfg_drv.integer_data[instance_id];
+ int ret = 0;
+
+ dst = kcalloc(dst_size, sizeof(char), GFP_KERNEL);
+ if (!dst)
+ return -ENOMEM;
+
+ /*
+ * Only data relevant to this driver and its functionality is
+ * read. BIOS defines the order in which each * element is
+ * read. Element 0 data is not relevant to this
+ * driver hence it is ignored. For clarity, all element names
+ * (DISPLAY_IN_UI) which defines the order in which is read
+ * and the name matches the variable where the data is stored.
+ *
+ * In earlier implementation, reported errors were ignored
+ * causing the data to remain uninitialized. It is not
+ * possible to determine if data read from BIOS is valid or
+ * not. It is for this reason functions may return a error
+ * without validating the data itself.
+ */
+
+ // VALUE:
+ integer_data->current_value = 0;
+
+ hp_get_string_from_buffer(&buffer_ptr, buffer_size, dst, dst_size);
+ ret = kstrtoint(dst, 10, &integer_data->current_value);
+ if (ret)
+ pr_warn("Unable to convert string to integer: %s\n", dst);
+ kfree(dst);
+
+ // COMMON:
+ ret = hp_get_common_data_from_buffer(&buffer_ptr, buffer_size, &integer_data->common);
+ if (ret < 0)
+ goto buffer_exit;
+
+ // INT_LOWER_BOUND:
+ ret = hp_get_integer_from_buffer(&buffer_ptr, buffer_size,
+ &integer_data->lower_bound);
+ if (ret < 0)
+ goto buffer_exit;
+
+ // INT_UPPER_BOUND:
+ ret = hp_get_integer_from_buffer(&buffer_ptr, buffer_size,
+ &integer_data->upper_bound);
+ if (ret < 0)
+ goto buffer_exit;
+
+ // INT_SCALAR_INCREMENT:
+ ret = hp_get_integer_from_buffer(&buffer_ptr, buffer_size,
+ &integer_data->scalar_increment);
+
+buffer_exit:
+ return ret;
+}
+
+/**
+ * hp_populate_integer_buffer_data() -
+ * Populate all properties of an instance under integer attribute
+ *
+ * @buffer_ptr: Buffer pointer
+ * @buffer_size: Buffer size
+ * @instance_id: The instance to enumerate
+ * @attr_name_kobj: The parent kernel object
+ */
+int hp_populate_integer_buffer_data(u8 *buffer_ptr, u32 *buffer_size, int instance_id,
+ struct kobject *attr_name_kobj)
+{
+ struct integer_data *integer_data = &bioscfg_drv.integer_data[instance_id];
+ int ret = 0;
+
+ integer_data->attr_name_kobj = attr_name_kobj;
+
+ /* Populate integer elements */
+ ret = hp_populate_integer_elements_from_buffer(buffer_ptr, buffer_size,
+ instance_id);
+ if (ret < 0)
+ return ret;
+
+ hp_update_attribute_permissions(integer_data->common.is_readonly,
+ &integer_current_val);
+ hp_friendly_user_name_update(integer_data->common.path,
+ attr_name_kobj->name,
+ integer_data->common.display_name,
+ sizeof(integer_data->common.display_name));
+
+ return sysfs_create_group(attr_name_kobj, &integer_attr_group);
+}
+
+/**
+ * hp_exit_integer_attributes() - Clear all attribute data
+ *
+ * Clears all data allocated for this group of attributes
+ */
+void hp_exit_integer_attributes(void)
+{
+ int instance_id;
+
+ for (instance_id = 0; instance_id < bioscfg_drv.integer_instances_count;
+ instance_id++) {
+ struct kobject *attr_name_kobj =
+ bioscfg_drv.integer_data[instance_id].attr_name_kobj;
+
+ if (attr_name_kobj)
+ sysfs_remove_group(attr_name_kobj, &integer_attr_group);
+ }
+ bioscfg_drv.integer_instances_count = 0;
+
+ kfree(bioscfg_drv.integer_data);
+ bioscfg_drv.integer_data = NULL;
+}
diff --git a/drivers/platform/x86/hp/hp-bioscfg/order-list-attributes.c b/drivers/platform/x86/hp/hp-bioscfg/order-list-attributes.c
new file mode 100644
index 0000000000..1ff09dfb7d
--- /dev/null
+++ b/drivers/platform/x86/hp/hp-bioscfg/order-list-attributes.c
@@ -0,0 +1,441 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Functions corresponding to ordered list type attributes under
+ * BIOS ORDERED LIST GUID for use with hp-bioscfg driver.
+ *
+ * Copyright (c) 2022 HP Development Company, L.P.
+ */
+
+#include "bioscfg.h"
+
+GET_INSTANCE_ID(ordered_list);
+
+static ssize_t current_value_show(struct kobject *kobj, struct kobj_attribute *attr, char *buf)
+{
+ int instance_id = get_ordered_list_instance_id(kobj);
+
+ if (instance_id < 0)
+ return -EIO;
+
+ return sysfs_emit(buf, "%s\n",
+ bioscfg_drv.ordered_list_data[instance_id].current_value);
+}
+
+static int replace_char_str(u8 *buffer, char *repl_char, char *repl_with)
+{
+ char *src = buffer;
+ int buflen = strlen(buffer);
+ int item;
+
+ if (buflen < 1)
+ return -EINVAL;
+
+ for (item = 0; item < buflen; item++)
+ if (src[item] == *repl_char)
+ src[item] = *repl_with;
+
+ return 0;
+}
+
+/**
+ * validate_ordered_list_input() -
+ * Validate input of current_value against possible values
+ *
+ * @instance: The instance on which input is validated
+ * @buf: Input value
+ */
+static int validate_ordered_list_input(int instance, char *buf)
+{
+ /* validation is done by BIOS. This validation function will
+ * convert semicolon to commas. BIOS uses commas as
+ * separators when reporting ordered-list values.
+ */
+ return replace_char_str(buf, SEMICOLON_SEP, COMMA_SEP);
+}
+
+static void update_ordered_list_value(int instance, char *attr_value)
+{
+ struct ordered_list_data *ordered_list_data = &bioscfg_drv.ordered_list_data[instance];
+
+ strscpy(ordered_list_data->current_value,
+ attr_value,
+ sizeof(ordered_list_data->current_value));
+}
+
+ATTRIBUTE_S_COMMON_PROPERTY_SHOW(display_name, ordered_list);
+static struct kobj_attribute ordered_list_display_name =
+ __ATTR_RO(display_name);
+
+ATTRIBUTE_PROPERTY_STORE(current_value, ordered_list);
+static struct kobj_attribute ordered_list_current_val =
+ __ATTR_RW_MODE(current_value, 0644);
+
+ATTRIBUTE_VALUES_PROPERTY_SHOW(elements, ordered_list, SEMICOLON_SEP);
+static struct kobj_attribute ordered_list_elements_val =
+ __ATTR_RO(elements);
+
+static ssize_t type_show(struct kobject *kobj, struct kobj_attribute *attr,
+ char *buf)
+{
+ return sysfs_emit(buf, "ordered-list\n");
+}
+
+static struct kobj_attribute ordered_list_type =
+ __ATTR_RO(type);
+
+static struct attribute *ordered_list_attrs[] = {
+ &common_display_langcode.attr,
+ &ordered_list_display_name.attr,
+ &ordered_list_current_val.attr,
+ &ordered_list_elements_val.attr,
+ &ordered_list_type.attr,
+ NULL
+};
+
+static const struct attribute_group ordered_list_attr_group = {
+ .attrs = ordered_list_attrs,
+};
+
+int hp_alloc_ordered_list_data(void)
+{
+ bioscfg_drv.ordered_list_instances_count =
+ hp_get_instance_count(HP_WMI_BIOS_ORDERED_LIST_GUID);
+ bioscfg_drv.ordered_list_data = kcalloc(bioscfg_drv.ordered_list_instances_count,
+ sizeof(*bioscfg_drv.ordered_list_data),
+ GFP_KERNEL);
+ if (!bioscfg_drv.ordered_list_data) {
+ bioscfg_drv.ordered_list_instances_count = 0;
+ return -ENOMEM;
+ }
+ return 0;
+}
+
+/* Expected Values types associated with each element */
+static const acpi_object_type expected_order_types[] = {
+ [NAME] = ACPI_TYPE_STRING,
+ [VALUE] = ACPI_TYPE_STRING,
+ [PATH] = ACPI_TYPE_STRING,
+ [IS_READONLY] = ACPI_TYPE_INTEGER,
+ [DISPLAY_IN_UI] = ACPI_TYPE_INTEGER,
+ [REQUIRES_PHYSICAL_PRESENCE] = ACPI_TYPE_INTEGER,
+ [SEQUENCE] = ACPI_TYPE_INTEGER,
+ [PREREQUISITES_SIZE] = ACPI_TYPE_INTEGER,
+ [PREREQUISITES] = ACPI_TYPE_STRING,
+ [SECURITY_LEVEL] = ACPI_TYPE_INTEGER,
+ [ORD_LIST_SIZE] = ACPI_TYPE_INTEGER,
+ [ORD_LIST_ELEMENTS] = ACPI_TYPE_STRING,
+};
+
+static int hp_populate_ordered_list_elements_from_package(union acpi_object *order_obj,
+ int order_obj_count,
+ int instance_id)
+{
+ char *str_value = NULL;
+ int value_len = 0;
+ int ret;
+ u32 size;
+ u32 int_value = 0;
+ int elem;
+ int olist_elem;
+ int reqs;
+ int eloc;
+ char *tmpstr = NULL;
+ char *part_tmp = NULL;
+ int tmp_len = 0;
+ char *part = NULL;
+ struct ordered_list_data *ordered_list_data = &bioscfg_drv.ordered_list_data[instance_id];
+
+ if (!order_obj)
+ return -EINVAL;
+
+ for (elem = 1, eloc = 1; eloc < ORD_ELEM_CNT; elem++, eloc++) {
+
+ switch (order_obj[elem].type) {
+ case ACPI_TYPE_STRING:
+ if (elem != PREREQUISITES && elem != ORD_LIST_ELEMENTS) {
+ ret = hp_convert_hexstr_to_str(order_obj[elem].string.pointer,
+ order_obj[elem].string.length,
+ &str_value, &value_len);
+ if (ret)
+ continue;
+ }
+ break;
+ case ACPI_TYPE_INTEGER:
+ int_value = (u32)order_obj[elem].integer.value;
+ break;
+ default:
+ pr_warn("Unsupported object type [%d]\n", order_obj[elem].type);
+ continue;
+ }
+
+ /* Check that both expected and read object type match */
+ if (expected_order_types[eloc] != order_obj[elem].type) {
+ pr_err("Error expected type %d for elem %d, but got type %d instead\n",
+ expected_order_types[eloc], elem, order_obj[elem].type);
+ kfree(str_value);
+ return -EIO;
+ }
+
+ /* Assign appropriate element value to corresponding field*/
+ switch (eloc) {
+ case VALUE:
+ strscpy(ordered_list_data->current_value,
+ str_value, sizeof(ordered_list_data->current_value));
+ replace_char_str(ordered_list_data->current_value, COMMA_SEP, SEMICOLON_SEP);
+ break;
+ case PATH:
+ strscpy(ordered_list_data->common.path, str_value,
+ sizeof(ordered_list_data->common.path));
+ break;
+ case IS_READONLY:
+ ordered_list_data->common.is_readonly = int_value;
+ break;
+ case DISPLAY_IN_UI:
+ ordered_list_data->common.display_in_ui = int_value;
+ break;
+ case REQUIRES_PHYSICAL_PRESENCE:
+ ordered_list_data->common.requires_physical_presence = int_value;
+ break;
+ case SEQUENCE:
+ ordered_list_data->common.sequence = int_value;
+ break;
+ case PREREQUISITES_SIZE:
+ if (int_value > MAX_PREREQUISITES_SIZE) {
+ pr_warn("Prerequisites size value exceeded the maximum number of elements supported or data may be malformed\n");
+ int_value = MAX_PREREQUISITES_SIZE;
+ }
+ ordered_list_data->common.prerequisites_size = int_value;
+
+ /*
+ * This step is needed to keep the expected
+ * element list pointing to the right obj[elem].type
+ * when the size is zero. PREREQUISITES
+ * object is omitted by BIOS when the size is
+ * zero.
+ */
+ if (int_value == 0)
+ eloc++;
+ break;
+ case PREREQUISITES:
+ size = min_t(u32, ordered_list_data->common.prerequisites_size,
+ MAX_PREREQUISITES_SIZE);
+ for (reqs = 0; reqs < size; reqs++) {
+ ret = hp_convert_hexstr_to_str(order_obj[elem + reqs].string.pointer,
+ order_obj[elem + reqs].string.length,
+ &str_value, &value_len);
+
+ if (ret)
+ continue;
+
+ strscpy(ordered_list_data->common.prerequisites[reqs],
+ str_value,
+ sizeof(ordered_list_data->common.prerequisites[reqs]));
+
+ kfree(str_value);
+ str_value = NULL;
+ }
+ break;
+
+ case SECURITY_LEVEL:
+ ordered_list_data->common.security_level = int_value;
+ break;
+
+ case ORD_LIST_SIZE:
+ if (int_value > MAX_ELEMENTS_SIZE) {
+ pr_warn("Order List size value exceeded the maximum number of elements supported or data may be malformed\n");
+ int_value = MAX_ELEMENTS_SIZE;
+ }
+ ordered_list_data->elements_size = int_value;
+
+ /*
+ * This step is needed to keep the expected
+ * element list pointing to the right obj[elem].type
+ * when the size is zero. ORD_LIST_ELEMENTS
+ * object is omitted by BIOS when the size is
+ * zero.
+ */
+ if (int_value == 0)
+ eloc++;
+ break;
+ case ORD_LIST_ELEMENTS:
+
+ /*
+ * Ordered list data is stored in hex and comma separated format
+ * Convert the data and split it to show each element
+ */
+ ret = hp_convert_hexstr_to_str(str_value, value_len, &tmpstr, &tmp_len);
+ if (ret)
+ goto exit_list;
+
+ part_tmp = tmpstr;
+ part = strsep(&part_tmp, COMMA_SEP);
+
+ for (olist_elem = 0; olist_elem < MAX_ELEMENTS_SIZE && part; olist_elem++) {
+ strscpy(ordered_list_data->elements[olist_elem],
+ part,
+ sizeof(ordered_list_data->elements[olist_elem]));
+ part = strsep(&part_tmp, COMMA_SEP);
+ }
+ ordered_list_data->elements_size = olist_elem;
+
+ kfree(str_value);
+ str_value = NULL;
+ break;
+ default:
+ pr_warn("Invalid element: %d found in Ordered_List attribute or data may be malformed\n", elem);
+ break;
+ }
+ kfree(tmpstr);
+ tmpstr = NULL;
+ kfree(str_value);
+ str_value = NULL;
+ }
+
+exit_list:
+ kfree(tmpstr);
+ kfree(str_value);
+ return 0;
+}
+
+/**
+ * hp_populate_ordered_list_package_data() -
+ * Populate all properties of an instance under ordered_list attribute
+ *
+ * @order_obj: ACPI object with ordered_list data
+ * @instance_id: The instance to enumerate
+ * @attr_name_kobj: The parent kernel object
+ */
+int hp_populate_ordered_list_package_data(union acpi_object *order_obj, int instance_id,
+ struct kobject *attr_name_kobj)
+{
+ struct ordered_list_data *ordered_list_data = &bioscfg_drv.ordered_list_data[instance_id];
+
+ ordered_list_data->attr_name_kobj = attr_name_kobj;
+
+ hp_populate_ordered_list_elements_from_package(order_obj,
+ order_obj->package.count,
+ instance_id);
+ hp_update_attribute_permissions(ordered_list_data->common.is_readonly,
+ &ordered_list_current_val);
+ hp_friendly_user_name_update(ordered_list_data->common.path,
+ attr_name_kobj->name,
+ ordered_list_data->common.display_name,
+ sizeof(ordered_list_data->common.display_name));
+ return sysfs_create_group(attr_name_kobj, &ordered_list_attr_group);
+}
+
+static int hp_populate_ordered_list_elements_from_buffer(u8 *buffer_ptr, u32 *buffer_size,
+ int instance_id)
+{
+ int values;
+ struct ordered_list_data *ordered_list_data = &bioscfg_drv.ordered_list_data[instance_id];
+ int ret = 0;
+
+ /*
+ * Only data relevant to this driver and its functionality is
+ * read. BIOS defines the order in which each * element is
+ * read. Element 0 data is not relevant to this
+ * driver hence it is ignored. For clarity, all element names
+ * (DISPLAY_IN_UI) which defines the order in which is read
+ * and the name matches the variable where the data is stored.
+ *
+ * In earlier implementation, reported errors were ignored
+ * causing the data to remain uninitialized. It is not
+ * possible to determine if data read from BIOS is valid or
+ * not. It is for this reason functions may return a error
+ * without validating the data itself.
+ */
+
+ // VALUE:
+ ret = hp_get_string_from_buffer(&buffer_ptr, buffer_size, ordered_list_data->current_value,
+ sizeof(ordered_list_data->current_value));
+ if (ret < 0)
+ goto buffer_exit;
+
+ replace_char_str(ordered_list_data->current_value, COMMA_SEP, SEMICOLON_SEP);
+
+ // COMMON:
+ ret = hp_get_common_data_from_buffer(&buffer_ptr, buffer_size,
+ &ordered_list_data->common);
+ if (ret < 0)
+ goto buffer_exit;
+
+ // ORD_LIST_SIZE:
+ ret = hp_get_integer_from_buffer(&buffer_ptr, buffer_size,
+ &ordered_list_data->elements_size);
+
+ if (ordered_list_data->elements_size > MAX_ELEMENTS_SIZE) {
+ /* Report a message and limit elements size to maximum value */
+ pr_warn("Ordered List size value exceeded the maximum number of elements supported or data may be malformed\n");
+ ordered_list_data->elements_size = MAX_ELEMENTS_SIZE;
+ }
+
+ // ORD_LIST_ELEMENTS:
+ for (values = 0; values < ordered_list_data->elements_size; values++) {
+ ret = hp_get_string_from_buffer(&buffer_ptr, buffer_size,
+ ordered_list_data->elements[values],
+ sizeof(ordered_list_data->elements[values]));
+ if (ret < 0)
+ break;
+ }
+
+buffer_exit:
+ return ret;
+}
+
+/**
+ * hp_populate_ordered_list_buffer_data() - Populate all properties of an
+ * instance under ordered list attribute
+ *
+ * @buffer_ptr: Buffer pointer
+ * @buffer_size: Buffer size
+ * @instance_id: The instance to enumerate
+ * @attr_name_kobj: The parent kernel object
+ */
+int hp_populate_ordered_list_buffer_data(u8 *buffer_ptr, u32 *buffer_size, int instance_id,
+ struct kobject *attr_name_kobj)
+{
+ struct ordered_list_data *ordered_list_data = &bioscfg_drv.ordered_list_data[instance_id];
+ int ret = 0;
+
+ ordered_list_data->attr_name_kobj = attr_name_kobj;
+
+ /* Populate ordered list elements */
+ ret = hp_populate_ordered_list_elements_from_buffer(buffer_ptr, buffer_size,
+ instance_id);
+ if (ret < 0)
+ return ret;
+
+ hp_update_attribute_permissions(ordered_list_data->common.is_readonly,
+ &ordered_list_current_val);
+ hp_friendly_user_name_update(ordered_list_data->common.path,
+ attr_name_kobj->name,
+ ordered_list_data->common.display_name,
+ sizeof(ordered_list_data->common.display_name));
+
+ return sysfs_create_group(attr_name_kobj, &ordered_list_attr_group);
+}
+
+/**
+ * hp_exit_ordered_list_attributes() - Clear all attribute data
+ *
+ * Clears all data allocated for this group of attributes
+ */
+void hp_exit_ordered_list_attributes(void)
+{
+ int instance_id;
+
+ for (instance_id = 0; instance_id < bioscfg_drv.ordered_list_instances_count;
+ instance_id++) {
+ struct kobject *attr_name_kobj =
+ bioscfg_drv.ordered_list_data[instance_id].attr_name_kobj;
+
+ if (attr_name_kobj)
+ sysfs_remove_group(attr_name_kobj,
+ &ordered_list_attr_group);
+ }
+ bioscfg_drv.ordered_list_instances_count = 0;
+
+ kfree(bioscfg_drv.ordered_list_data);
+ bioscfg_drv.ordered_list_data = NULL;
+}
diff --git a/drivers/platform/x86/hp/hp-bioscfg/passwdobj-attributes.c b/drivers/platform/x86/hp/hp-bioscfg/passwdobj-attributes.c
new file mode 100644
index 0000000000..03d0188804
--- /dev/null
+++ b/drivers/platform/x86/hp/hp-bioscfg/passwdobj-attributes.c
@@ -0,0 +1,556 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Functions corresponding to password object type attributes under
+ * BIOS PASSWORD for use with hp-bioscfg driver.
+ *
+ * Copyright (c) 2022 HP Development Company, L.P.
+ */
+
+#include "bioscfg.h"
+#include <asm-generic/posix_types.h>
+
+GET_INSTANCE_ID(password);
+/*
+ * Clear all passwords copied to memory for a particular
+ * authentication instance
+ */
+static int clear_passwords(const int instance)
+{
+ struct password_data *password_data = &bioscfg_drv.password_data[instance];
+
+ if (!password_data->is_enabled)
+ return 0;
+
+ memset(password_data->current_password,
+ 0, sizeof(password_data->current_password));
+ memset(password_data->new_password,
+ 0, sizeof(password_data->new_password));
+
+ return 0;
+}
+
+/*
+ * Clear all credentials copied to memory for both Power-ON and Setup
+ * BIOS instances
+ */
+int hp_clear_all_credentials(void)
+{
+ int count = bioscfg_drv.password_instances_count;
+ int instance;
+
+ /* clear all passwords */
+ for (instance = 0; instance < count; instance++)
+ clear_passwords(instance);
+
+ /* clear auth_token */
+ kfree(bioscfg_drv.spm_data.auth_token);
+ bioscfg_drv.spm_data.auth_token = NULL;
+
+ return 0;
+}
+
+int hp_get_password_instance_for_type(const char *name)
+{
+ int count = bioscfg_drv.password_instances_count;
+ int instance;
+
+ for (instance = 0; instance < count; instance++)
+ if (!strcmp(bioscfg_drv.password_data[instance].common.display_name, name))
+ return instance;
+
+ return -EINVAL;
+}
+
+static int validate_password_input(int instance_id, const char *buf)
+{
+ int length;
+ struct password_data *password_data = &bioscfg_drv.password_data[instance_id];
+
+ length = strlen(buf);
+ if (buf[length - 1] == '\n')
+ length--;
+
+ if (length > MAX_PASSWD_SIZE)
+ return INVALID_BIOS_AUTH;
+
+ if (password_data->min_password_length > length ||
+ password_data->max_password_length < length)
+ return INVALID_BIOS_AUTH;
+ return SUCCESS;
+}
+
+ATTRIBUTE_N_PROPERTY_SHOW(is_enabled, password);
+static struct kobj_attribute password_is_password_set = __ATTR_RO(is_enabled);
+
+static int store_password_instance(struct kobject *kobj, const char *buf,
+ size_t count, bool is_current)
+{
+ char *buf_cp;
+ int id, ret = 0;
+
+ buf_cp = kstrdup(buf, GFP_KERNEL);
+ if (!buf_cp)
+ return -ENOMEM;
+
+ ret = hp_enforce_single_line_input(buf_cp, count);
+ if (!ret) {
+ id = get_password_instance_id(kobj);
+
+ if (id >= 0)
+ ret = validate_password_input(id, buf_cp);
+ }
+
+ if (!ret) {
+ if (is_current)
+ strscpy(bioscfg_drv.password_data[id].current_password,
+ buf_cp,
+ sizeof(bioscfg_drv.password_data[id].current_password));
+ else
+ strscpy(bioscfg_drv.password_data[id].new_password,
+ buf_cp,
+ sizeof(bioscfg_drv.password_data[id].new_password));
+ }
+
+ kfree(buf_cp);
+ return ret < 0 ? ret : count;
+}
+
+static ssize_t current_password_store(struct kobject *kobj,
+ struct kobj_attribute *attr,
+ const char *buf, size_t count)
+{
+ return store_password_instance(kobj, buf, count, true);
+}
+
+static struct kobj_attribute password_current_password = __ATTR_WO(current_password);
+
+static ssize_t new_password_store(struct kobject *kobj,
+ struct kobj_attribute *attr,
+ const char *buf, size_t count)
+{
+ return store_password_instance(kobj, buf, count, true);
+}
+
+static struct kobj_attribute password_new_password = __ATTR_WO(new_password);
+
+ATTRIBUTE_N_PROPERTY_SHOW(min_password_length, password);
+static struct kobj_attribute password_min_password_length = __ATTR_RO(min_password_length);
+
+ATTRIBUTE_N_PROPERTY_SHOW(max_password_length, password);
+static struct kobj_attribute password_max_password_length = __ATTR_RO(max_password_length);
+
+static ssize_t role_show(struct kobject *kobj, struct kobj_attribute *attr, char *buf)
+{
+ if (!strcmp(kobj->name, SETUP_PASSWD))
+ return sysfs_emit(buf, "%s\n", BIOS_ADMIN);
+
+ if (!strcmp(kobj->name, POWER_ON_PASSWD))
+ return sysfs_emit(buf, "%s\n", POWER_ON);
+
+ return -EIO;
+}
+
+static struct kobj_attribute password_role = __ATTR_RO(role);
+
+static ssize_t mechanism_show(struct kobject *kobj, struct kobj_attribute *attr,
+ char *buf)
+{
+ int i = get_password_instance_id(kobj);
+
+ if (i < 0)
+ return i;
+
+ if (bioscfg_drv.password_data[i].mechanism != PASSWORD)
+ return -EINVAL;
+
+ return sysfs_emit(buf, "%s\n", PASSWD_MECHANISM_TYPES);
+}
+
+static struct kobj_attribute password_mechanism = __ATTR_RO(mechanism);
+
+ATTRIBUTE_VALUES_PROPERTY_SHOW(encodings, password, SEMICOLON_SEP);
+static struct kobj_attribute password_encodings_val = __ATTR_RO(encodings);
+
+static struct attribute *password_attrs[] = {
+ &password_is_password_set.attr,
+ &password_min_password_length.attr,
+ &password_max_password_length.attr,
+ &password_current_password.attr,
+ &password_new_password.attr,
+ &password_role.attr,
+ &password_mechanism.attr,
+ &password_encodings_val.attr,
+ NULL
+};
+
+static const struct attribute_group password_attr_group = {
+ .attrs = password_attrs
+};
+
+int hp_alloc_password_data(void)
+{
+ bioscfg_drv.password_instances_count = hp_get_instance_count(HP_WMI_BIOS_PASSWORD_GUID);
+ bioscfg_drv.password_data = kcalloc(bioscfg_drv.password_instances_count,
+ sizeof(*bioscfg_drv.password_data), GFP_KERNEL);
+ if (!bioscfg_drv.password_data) {
+ bioscfg_drv.password_instances_count = 0;
+ return -ENOMEM;
+ }
+
+ return 0;
+}
+
+/* Expected Values types associated with each element */
+static const acpi_object_type expected_password_types[] = {
+ [NAME] = ACPI_TYPE_STRING,
+ [VALUE] = ACPI_TYPE_STRING,
+ [PATH] = ACPI_TYPE_STRING,
+ [IS_READONLY] = ACPI_TYPE_INTEGER,
+ [DISPLAY_IN_UI] = ACPI_TYPE_INTEGER,
+ [REQUIRES_PHYSICAL_PRESENCE] = ACPI_TYPE_INTEGER,
+ [SEQUENCE] = ACPI_TYPE_INTEGER,
+ [PREREQUISITES_SIZE] = ACPI_TYPE_INTEGER,
+ [PREREQUISITES] = ACPI_TYPE_STRING,
+ [SECURITY_LEVEL] = ACPI_TYPE_INTEGER,
+ [PSWD_MIN_LENGTH] = ACPI_TYPE_INTEGER,
+ [PSWD_MAX_LENGTH] = ACPI_TYPE_INTEGER,
+ [PSWD_SIZE] = ACPI_TYPE_INTEGER,
+ [PSWD_ENCODINGS] = ACPI_TYPE_STRING,
+ [PSWD_IS_SET] = ACPI_TYPE_INTEGER,
+};
+
+static int hp_populate_password_elements_from_package(union acpi_object *password_obj,
+ int password_obj_count,
+ int instance_id)
+{
+ char *str_value = NULL;
+ int value_len;
+ int ret;
+ u32 size;
+ u32 int_value = 0;
+ int elem;
+ int reqs;
+ int eloc;
+ int pos_values;
+ struct password_data *password_data = &bioscfg_drv.password_data[instance_id];
+
+ if (!password_obj)
+ return -EINVAL;
+
+ for (elem = 1, eloc = 1; elem < password_obj_count; elem++, eloc++) {
+ /* ONLY look at the first PASSWORD_ELEM_CNT elements */
+ if (eloc == PSWD_ELEM_CNT)
+ goto exit_package;
+
+ switch (password_obj[elem].type) {
+ case ACPI_TYPE_STRING:
+ if (PREREQUISITES != elem && PSWD_ENCODINGS != elem) {
+ ret = hp_convert_hexstr_to_str(password_obj[elem].string.pointer,
+ password_obj[elem].string.length,
+ &str_value, &value_len);
+ if (ret)
+ continue;
+ }
+ break;
+ case ACPI_TYPE_INTEGER:
+ int_value = (u32)password_obj[elem].integer.value;
+ break;
+ default:
+ pr_warn("Unsupported object type [%d]\n", password_obj[elem].type);
+ continue;
+ }
+
+ /* Check that both expected and read object type match */
+ if (expected_password_types[eloc] != password_obj[elem].type) {
+ pr_err("Error expected type %d for elem %d, but got type %d instead\n",
+ expected_password_types[eloc], elem, password_obj[elem].type);
+ kfree(str_value);
+ return -EIO;
+ }
+
+ /* Assign appropriate element value to corresponding field*/
+ switch (eloc) {
+ case VALUE:
+ break;
+ case PATH:
+ strscpy(password_data->common.path, str_value,
+ sizeof(password_data->common.path));
+ break;
+ case IS_READONLY:
+ password_data->common.is_readonly = int_value;
+ break;
+ case DISPLAY_IN_UI:
+ password_data->common.display_in_ui = int_value;
+ break;
+ case REQUIRES_PHYSICAL_PRESENCE:
+ password_data->common.requires_physical_presence = int_value;
+ break;
+ case SEQUENCE:
+ password_data->common.sequence = int_value;
+ break;
+ case PREREQUISITES_SIZE:
+ if (int_value > MAX_PREREQUISITES_SIZE) {
+ pr_warn("Prerequisites size value exceeded the maximum number of elements supported or data may be malformed\n");
+ int_value = MAX_PREREQUISITES_SIZE;
+ }
+ password_data->common.prerequisites_size = int_value;
+
+ /* This step is needed to keep the expected
+ * element list pointing to the right obj[elem].type
+ * when the size is zero. PREREQUISITES
+ * object is omitted by BIOS when the size is
+ * zero.
+ */
+ if (int_value == 0)
+ eloc++;
+ break;
+ case PREREQUISITES:
+ size = min_t(u32, password_data->common.prerequisites_size,
+ MAX_PREREQUISITES_SIZE);
+
+ for (reqs = 0; reqs < size; reqs++) {
+ ret = hp_convert_hexstr_to_str(password_obj[elem + reqs].string.pointer,
+ password_obj[elem + reqs].string.length,
+ &str_value, &value_len);
+
+ if (ret)
+ break;
+
+ strscpy(password_data->common.prerequisites[reqs],
+ str_value,
+ sizeof(password_data->common.prerequisites[reqs]));
+
+ kfree(str_value);
+ str_value = NULL;
+
+ }
+ break;
+ case SECURITY_LEVEL:
+ password_data->common.security_level = int_value;
+ break;
+ case PSWD_MIN_LENGTH:
+ password_data->min_password_length = int_value;
+ break;
+ case PSWD_MAX_LENGTH:
+ password_data->max_password_length = int_value;
+ break;
+ case PSWD_SIZE:
+
+ if (int_value > MAX_ENCODINGS_SIZE) {
+ pr_warn("Password Encoding size value exceeded the maximum number of elements supported or data may be malformed\n");
+ int_value = MAX_ENCODINGS_SIZE;
+ }
+ password_data->encodings_size = int_value;
+
+ /* This step is needed to keep the expected
+ * element list pointing to the right obj[elem].type
+ * when the size is zero. PSWD_ENCODINGS
+ * object is omitted by BIOS when the size is
+ * zero.
+ */
+ if (int_value == 0)
+ eloc++;
+ break;
+ case PSWD_ENCODINGS:
+ size = min_t(u32, password_data->encodings_size, MAX_ENCODINGS_SIZE);
+ for (pos_values = 0; pos_values < size; pos_values++) {
+ ret = hp_convert_hexstr_to_str(password_obj[elem + pos_values].string.pointer,
+ password_obj[elem + pos_values].string.length,
+ &str_value, &value_len);
+ if (ret)
+ break;
+
+ strscpy(password_data->encodings[pos_values],
+ str_value,
+ sizeof(password_data->encodings[pos_values]));
+ kfree(str_value);
+ str_value = NULL;
+
+ }
+ break;
+ case PSWD_IS_SET:
+ password_data->is_enabled = int_value;
+ break;
+ default:
+ pr_warn("Invalid element: %d found in Password attribute or data may be malformed\n", elem);
+ break;
+ }
+
+ kfree(str_value);
+ str_value = NULL;
+ }
+
+exit_package:
+ kfree(str_value);
+ return 0;
+}
+
+/**
+ * hp_populate_password_package_data()
+ * Populate all properties for an instance under password attribute
+ *
+ * @password_obj: ACPI object with password data
+ * @instance_id: The instance to enumerate
+ * @attr_name_kobj: The parent kernel object
+ */
+int hp_populate_password_package_data(union acpi_object *password_obj, int instance_id,
+ struct kobject *attr_name_kobj)
+{
+ struct password_data *password_data = &bioscfg_drv.password_data[instance_id];
+
+ password_data->attr_name_kobj = attr_name_kobj;
+
+ hp_populate_password_elements_from_package(password_obj,
+ password_obj->package.count,
+ instance_id);
+
+ hp_friendly_user_name_update(password_data->common.path,
+ attr_name_kobj->name,
+ password_data->common.display_name,
+ sizeof(password_data->common.display_name));
+
+ if (!strcmp(attr_name_kobj->name, SETUP_PASSWD))
+ return sysfs_create_group(attr_name_kobj, &password_attr_group);
+
+ return sysfs_create_group(attr_name_kobj, &password_attr_group);
+}
+
+static int hp_populate_password_elements_from_buffer(u8 *buffer_ptr, u32 *buffer_size,
+ int instance_id)
+{
+ int values;
+ int isreadonly;
+ struct password_data *password_data = &bioscfg_drv.password_data[instance_id];
+ int ret = 0;
+
+ /*
+ * Only data relevant to this driver and its functionality is
+ * read. BIOS defines the order in which each * element is
+ * read. Element 0 data is not relevant to this
+ * driver hence it is ignored. For clarity, all element names
+ * (DISPLAY_IN_UI) which defines the order in which is read
+ * and the name matches the variable where the data is stored.
+ *
+ * In earlier implementation, reported errors were ignored
+ * causing the data to remain uninitialized. It is not
+ * possible to determine if data read from BIOS is valid or
+ * not. It is for this reason functions may return a error
+ * without validating the data itself.
+ */
+
+ // VALUE:
+ ret = hp_get_string_from_buffer(&buffer_ptr, buffer_size, password_data->current_password,
+ sizeof(password_data->current_password));
+ if (ret < 0)
+ goto buffer_exit;
+
+ // COMMON:
+ ret = hp_get_common_data_from_buffer(&buffer_ptr, buffer_size,
+ &password_data->common);
+ if (ret < 0)
+ goto buffer_exit;
+
+ // PSWD_MIN_LENGTH:
+ ret = hp_get_integer_from_buffer(&buffer_ptr, buffer_size,
+ &password_data->min_password_length);
+ if (ret < 0)
+ goto buffer_exit;
+
+ // PSWD_MAX_LENGTH:
+ ret = hp_get_integer_from_buffer(&buffer_ptr, buffer_size,
+ &password_data->max_password_length);
+ if (ret < 0)
+ goto buffer_exit;
+
+ // PSWD_SIZE:
+ ret = hp_get_integer_from_buffer(&buffer_ptr, buffer_size,
+ &password_data->encodings_size);
+ if (ret < 0)
+ goto buffer_exit;
+
+ if (password_data->encodings_size > MAX_ENCODINGS_SIZE) {
+ /* Report a message and limit possible values size to maximum value */
+ pr_warn("Password Encoding size value exceeded the maximum number of elements supported or data may be malformed\n");
+ password_data->encodings_size = MAX_ENCODINGS_SIZE;
+ }
+
+ // PSWD_ENCODINGS:
+ for (values = 0; values < password_data->encodings_size; values++) {
+ ret = hp_get_string_from_buffer(&buffer_ptr, buffer_size,
+ password_data->encodings[values],
+ sizeof(password_data->encodings[values]));
+ if (ret < 0)
+ break;
+ }
+
+ // PSWD_IS_SET:
+ ret = hp_get_integer_from_buffer(&buffer_ptr, buffer_size, &isreadonly);
+ if (ret < 0)
+ goto buffer_exit;
+
+ password_data->is_enabled = isreadonly ? true : false;
+
+buffer_exit:
+ return ret;
+}
+
+/**
+ * hp_populate_password_buffer_data()
+ * Populate all properties for an instance under password object attribute
+ *
+ * @buffer_ptr: Buffer pointer
+ * @buffer_size: Buffer size
+ * @instance_id: The instance to enumerate
+ * @attr_name_kobj: The parent kernel object
+ */
+int hp_populate_password_buffer_data(u8 *buffer_ptr, u32 *buffer_size, int instance_id,
+ struct kobject *attr_name_kobj)
+{
+ struct password_data *password_data = &bioscfg_drv.password_data[instance_id];
+ int ret = 0;
+
+ password_data->attr_name_kobj = attr_name_kobj;
+
+ /* Populate Password attributes */
+ ret = hp_populate_password_elements_from_buffer(buffer_ptr, buffer_size,
+ instance_id);
+ if (ret < 0)
+ return ret;
+
+ hp_friendly_user_name_update(password_data->common.path,
+ attr_name_kobj->name,
+ password_data->common.display_name,
+ sizeof(password_data->common.display_name));
+ if (!strcmp(attr_name_kobj->name, SETUP_PASSWD))
+ return sysfs_create_group(attr_name_kobj, &password_attr_group);
+
+ return sysfs_create_group(attr_name_kobj, &password_attr_group);
+}
+
+/**
+ * hp_exit_password_attributes() - Clear all attribute data
+ *
+ * Clears all data allocated for this group of attributes
+ */
+void hp_exit_password_attributes(void)
+{
+ int instance_id;
+
+ for (instance_id = 0; instance_id < bioscfg_drv.password_instances_count;
+ instance_id++) {
+ struct kobject *attr_name_kobj =
+ bioscfg_drv.password_data[instance_id].attr_name_kobj;
+
+ if (attr_name_kobj) {
+ if (!strcmp(attr_name_kobj->name, SETUP_PASSWD))
+ sysfs_remove_group(attr_name_kobj,
+ &password_attr_group);
+ else
+ sysfs_remove_group(attr_name_kobj,
+ &password_attr_group);
+ }
+ }
+ bioscfg_drv.password_instances_count = 0;
+ kfree(bioscfg_drv.password_data);
+ bioscfg_drv.password_data = NULL;
+}
diff --git a/drivers/platform/x86/hp/hp-bioscfg/spmobj-attributes.c b/drivers/platform/x86/hp/hp-bioscfg/spmobj-attributes.c
new file mode 100644
index 0000000000..86f9023875
--- /dev/null
+++ b/drivers/platform/x86/hp/hp-bioscfg/spmobj-attributes.c
@@ -0,0 +1,381 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Functions corresponding to secure platform management object type
+ * attributes under BIOS PASSWORD for use with hp-bioscfg driver
+ *
+ * Copyright (c) 2022 HP Development Company, L.P.
+ */
+
+#include "bioscfg.h"
+
+static const char * const spm_state_types[] = {
+ "not provisioned",
+ "provisioned",
+ "provisioning in progress",
+};
+
+static const char * const spm_mechanism_types[] = {
+ "not provisioned",
+ "signing-key",
+ "endorsement-key",
+};
+
+struct secureplatform_provisioning_data {
+ u8 state;
+ u8 version[2];
+ u8 reserved1;
+ u32 features;
+ u32 nonce;
+ u8 reserved2[28];
+ u8 sk_mod[MAX_KEY_MOD_SIZE];
+ u8 kek_mod[MAX_KEY_MOD_SIZE];
+};
+
+/**
+ * hp_calculate_security_buffer() - determines size of security buffer
+ * for authentication scheme
+ *
+ * @authentication: the authentication content
+ *
+ * Currently only supported type is Admin password
+ */
+size_t hp_calculate_security_buffer(const char *authentication)
+{
+ size_t size, authlen;
+
+ if (!authentication)
+ return sizeof(u16) * 2;
+
+ authlen = strlen(authentication);
+ if (!authlen)
+ return sizeof(u16) * 2;
+
+ size = sizeof(u16) + authlen * sizeof(u16);
+ if (!strstarts(authentication, BEAM_PREFIX))
+ size += strlen(UTF_PREFIX) * sizeof(u16);
+
+ return size;
+}
+
+/**
+ * hp_populate_security_buffer() - builds a security buffer for
+ * authentication scheme
+ *
+ * @authbuf: the security buffer
+ * @authentication: the authentication content
+ *
+ * Currently only supported type is PLAIN TEXT
+ */
+int hp_populate_security_buffer(u16 *authbuf, const char *authentication)
+{
+ u16 *auth = authbuf;
+ char *strprefix = NULL;
+ int ret = 0;
+
+ if (strstarts(authentication, BEAM_PREFIX)) {
+ /*
+ * BEAM_PREFIX is append to authbuf when a signature
+ * is provided and Sure Admin is enabled in BIOS
+ */
+ /* BEAM_PREFIX found, convert part to unicode */
+ auth = hp_ascii_to_utf16_unicode(auth, authentication);
+ if (!auth)
+ return -EINVAL;
+
+ } else {
+ /*
+ * UTF-16 prefix is append to the * authbuf when a BIOS
+ * admin password is configured in BIOS
+ */
+
+ /* append UTF_PREFIX to part and then convert it to unicode */
+ strprefix = kasprintf(GFP_KERNEL, "%s%s", UTF_PREFIX,
+ authentication);
+ if (!strprefix)
+ return -ENOMEM;
+
+ auth = hp_ascii_to_utf16_unicode(auth, strprefix);
+ kfree(strprefix);
+
+ if (!auth) {
+ ret = -EINVAL;
+ goto out_buffer;
+ }
+ }
+
+out_buffer:
+ return ret;
+}
+
+static ssize_t update_spm_state(void)
+{
+ struct secureplatform_provisioning_data data;
+ int ret;
+
+ ret = hp_wmi_perform_query(HPWMI_SECUREPLATFORM_GET_STATE,
+ HPWMI_SECUREPLATFORM, &data, 0,
+ sizeof(data));
+ if (ret < 0)
+ return ret;
+
+ bioscfg_drv.spm_data.mechanism = data.state;
+ if (bioscfg_drv.spm_data.mechanism)
+ bioscfg_drv.spm_data.is_enabled = 1;
+
+ return 0;
+}
+
+static ssize_t statusbin(struct kobject *kobj,
+ struct kobj_attribute *attr,
+ struct secureplatform_provisioning_data *buf)
+{
+ int ret = hp_wmi_perform_query(HPWMI_SECUREPLATFORM_GET_STATE,
+ HPWMI_SECUREPLATFORM, buf, 0,
+ sizeof(*buf));
+
+ if (ret < 0)
+ return ret;
+
+ return sizeof(struct secureplatform_provisioning_data);
+}
+
+/*
+ * status_show - Reads SPM status
+ */
+static ssize_t status_show(struct kobject *kobj, struct kobj_attribute
+ *attr, char *buf)
+{
+ int ret, i;
+ int len = 0;
+ struct secureplatform_provisioning_data data;
+
+ ret = statusbin(kobj, attr, &data);
+ if (ret < 0)
+ return ret;
+
+ /*
+ * 'status' is a read-only file that returns ASCII text in
+ * JSON format reporting the status information.
+ *
+ * "State": "not provisioned | provisioned | provisioning in progress ",
+ * "Version": " Major. Minor ",
+ * "Nonce": <16-bit unsigned number display in base 10>,
+ * "FeaturesInUse": <16-bit unsigned number display in base 10>,
+ * "EndorsementKeyMod": "<256 bytes in base64>",
+ * "SigningKeyMod": "<256 bytes in base64>"
+ */
+
+ len += sysfs_emit_at(buf, len, "{\n");
+ len += sysfs_emit_at(buf, len, "\t\"State\": \"%s\",\n",
+ spm_state_types[data.state]);
+ len += sysfs_emit_at(buf, len, "\t\"Version\": \"%d.%d\"",
+ data.version[0], data.version[1]);
+
+ /*
+ * state == 0 means secure platform management
+ * feature is not configured in BIOS.
+ */
+ if (data.state == 0) {
+ len += sysfs_emit_at(buf, len, "\n");
+ goto status_exit;
+ } else {
+ len += sysfs_emit_at(buf, len, ",\n");
+ }
+
+ len += sysfs_emit_at(buf, len, "\t\"Nonce\": %d,\n", data.nonce);
+ len += sysfs_emit_at(buf, len, "\t\"FeaturesInUse\": %d,\n", data.features);
+ len += sysfs_emit_at(buf, len, "\t\"EndorsementKeyMod\": \"");
+
+ for (i = 255; i >= 0; i--)
+ len += sysfs_emit_at(buf, len, " %u", data.kek_mod[i]);
+
+ len += sysfs_emit_at(buf, len, " \",\n");
+ len += sysfs_emit_at(buf, len, "\t\"SigningKeyMod\": \"");
+
+ for (i = 255; i >= 0; i--)
+ len += sysfs_emit_at(buf, len, " %u", data.sk_mod[i]);
+
+ /* Return buf contents */
+ len += sysfs_emit_at(buf, len, " \"\n");
+
+status_exit:
+ len += sysfs_emit_at(buf, len, "}\n");
+
+ return len;
+}
+
+static struct kobj_attribute password_spm_status = __ATTR_RO(status);
+
+ATTRIBUTE_SPM_N_PROPERTY_SHOW(is_enabled, spm);
+static struct kobj_attribute password_spm_is_key_enabled = __ATTR_RO(is_enabled);
+
+static ssize_t key_mechanism_show(struct kobject *kobj, struct kobj_attribute *attr,
+ char *buf)
+{
+ return sysfs_emit(buf, "%s\n",
+ spm_mechanism_types[bioscfg_drv.spm_data.mechanism]);
+}
+
+static struct kobj_attribute password_spm_key_mechanism = __ATTR_RO(key_mechanism);
+
+static ssize_t sk_store(struct kobject *kobj,
+ struct kobj_attribute *attr,
+ const char *buf, size_t count)
+{
+ int ret;
+ int length;
+
+ length = count;
+ if (buf[length - 1] == '\n')
+ length--;
+
+ /* allocate space and copy current signing key */
+ bioscfg_drv.spm_data.signing_key = kmemdup(buf, length, GFP_KERNEL);
+ if (!bioscfg_drv.spm_data.signing_key)
+ return -ENOMEM;
+
+ /* submit signing key payload */
+ ret = hp_wmi_perform_query(HPWMI_SECUREPLATFORM_SET_SK,
+ HPWMI_SECUREPLATFORM,
+ (void *)bioscfg_drv.spm_data.signing_key,
+ count, 0);
+
+ if (!ret) {
+ bioscfg_drv.spm_data.mechanism = SIGNING_KEY;
+ hp_set_reboot_and_signal_event();
+ }
+
+ kfree(bioscfg_drv.spm_data.signing_key);
+ bioscfg_drv.spm_data.signing_key = NULL;
+
+ return ret ? ret : count;
+}
+
+static struct kobj_attribute password_spm_signing_key = __ATTR_WO(sk);
+
+static ssize_t kek_store(struct kobject *kobj,
+ struct kobj_attribute *attr,
+ const char *buf, size_t count)
+{
+ int ret;
+ int length;
+
+ length = count;
+ if (buf[length - 1] == '\n')
+ length--;
+
+ /* allocate space and copy current signing key */
+ bioscfg_drv.spm_data.endorsement_key = kmemdup(buf, length, GFP_KERNEL);
+ if (!bioscfg_drv.spm_data.endorsement_key) {
+ ret = -ENOMEM;
+ goto exit_kek;
+ }
+
+ ret = hp_wmi_perform_query(HPWMI_SECUREPLATFORM_SET_KEK,
+ HPWMI_SECUREPLATFORM,
+ (void *)bioscfg_drv.spm_data.endorsement_key,
+ count, 0);
+
+ if (!ret) {
+ bioscfg_drv.spm_data.mechanism = ENDORSEMENT_KEY;
+ hp_set_reboot_and_signal_event();
+ }
+
+exit_kek:
+ kfree(bioscfg_drv.spm_data.endorsement_key);
+ bioscfg_drv.spm_data.endorsement_key = NULL;
+
+ return ret ? ret : count;
+}
+
+static struct kobj_attribute password_spm_endorsement_key = __ATTR_WO(kek);
+
+static ssize_t role_show(struct kobject *kobj, struct kobj_attribute *attr,
+ char *buf)
+{
+ return sysfs_emit(buf, "%s\n", BIOS_SPM);
+}
+
+static struct kobj_attribute password_spm_role = __ATTR_RO(role);
+
+static ssize_t auth_token_store(struct kobject *kobj,
+ struct kobj_attribute *attr,
+ const char *buf, size_t count)
+{
+ int ret = 0;
+ int length;
+
+ length = count;
+ if (buf[length - 1] == '\n')
+ length--;
+
+ /* allocate space and copy current auth token */
+ bioscfg_drv.spm_data.auth_token = kmemdup(buf, length, GFP_KERNEL);
+ if (!bioscfg_drv.spm_data.auth_token) {
+ ret = -ENOMEM;
+ goto exit_token;
+ }
+
+ return count;
+
+exit_token:
+ kfree(bioscfg_drv.spm_data.auth_token);
+ bioscfg_drv.spm_data.auth_token = NULL;
+
+ return ret;
+}
+
+static struct kobj_attribute password_spm_auth_token = __ATTR_WO(auth_token);
+
+static struct attribute *secure_platform_attrs[] = {
+ &password_spm_is_key_enabled.attr,
+ &password_spm_signing_key.attr,
+ &password_spm_endorsement_key.attr,
+ &password_spm_key_mechanism.attr,
+ &password_spm_status.attr,
+ &password_spm_role.attr,
+ &password_spm_auth_token.attr,
+ NULL,
+};
+
+static const struct attribute_group secure_platform_attr_group = {
+ .attrs = secure_platform_attrs,
+};
+
+void hp_exit_secure_platform_attributes(void)
+{
+ /* remove secure platform sysfs entry and free key data*/
+
+ kfree(bioscfg_drv.spm_data.endorsement_key);
+ bioscfg_drv.spm_data.endorsement_key = NULL;
+
+ kfree(bioscfg_drv.spm_data.signing_key);
+ bioscfg_drv.spm_data.signing_key = NULL;
+
+ kfree(bioscfg_drv.spm_data.auth_token);
+ bioscfg_drv.spm_data.auth_token = NULL;
+
+ if (bioscfg_drv.spm_data.attr_name_kobj)
+ sysfs_remove_group(bioscfg_drv.spm_data.attr_name_kobj,
+ &secure_platform_attr_group);
+}
+
+int hp_populate_secure_platform_data(struct kobject *attr_name_kobj)
+{
+ /* Populate data for Secure Platform Management */
+ bioscfg_drv.spm_data.attr_name_kobj = attr_name_kobj;
+
+ strscpy(bioscfg_drv.spm_data.attribute_name, SPM_STR,
+ sizeof(bioscfg_drv.spm_data.attribute_name));
+
+ bioscfg_drv.spm_data.is_enabled = 0;
+ bioscfg_drv.spm_data.mechanism = 0;
+ bioscfg_drv.pending_reboot = false;
+ update_spm_state();
+
+ bioscfg_drv.spm_data.endorsement_key = NULL;
+ bioscfg_drv.spm_data.signing_key = NULL;
+ bioscfg_drv.spm_data.auth_token = NULL;
+
+ return sysfs_create_group(attr_name_kobj, &secure_platform_attr_group);
+}
diff --git a/drivers/platform/x86/hp/hp-bioscfg/string-attributes.c b/drivers/platform/x86/hp/hp-bioscfg/string-attributes.c
new file mode 100644
index 0000000000..f0c2007009
--- /dev/null
+++ b/drivers/platform/x86/hp/hp-bioscfg/string-attributes.c
@@ -0,0 +1,395 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Functions corresponding to string type attributes under
+ * HP_WMI_BIOS_STRING_GUID for use with hp-bioscfg driver.
+ *
+ * Copyright (c) 2022 HP Development Company, L.P.
+ */
+
+#include "bioscfg.h"
+
+#define WMI_STRING_TYPE "HPBIOS_BIOSString"
+
+GET_INSTANCE_ID(string);
+
+static ssize_t current_value_show(struct kobject *kobj, struct kobj_attribute *attr, char *buf)
+{
+ int instance_id = get_string_instance_id(kobj);
+
+ if (instance_id < 0)
+ return -EIO;
+
+ return sysfs_emit(buf, "%s\n",
+ bioscfg_drv.string_data[instance_id].current_value);
+}
+
+/**
+ * validate_string_input() -
+ * Validate input of current_value against min and max lengths
+ *
+ * @instance_id: The instance on which input is validated
+ * @buf: Input value
+ */
+static int validate_string_input(int instance_id, const char *buf)
+{
+ int in_len = strlen(buf);
+ struct string_data *string_data = &bioscfg_drv.string_data[instance_id];
+
+ /* BIOS treats it as a read only attribute */
+ if (string_data->common.is_readonly)
+ return -EIO;
+
+ if (in_len < string_data->min_length || in_len > string_data->max_length)
+ return -ERANGE;
+
+ return 0;
+}
+
+static void update_string_value(int instance_id, char *attr_value)
+{
+ struct string_data *string_data = &bioscfg_drv.string_data[instance_id];
+
+ /* Write settings to BIOS */
+ strscpy(string_data->current_value, attr_value, sizeof(string_data->current_value));
+}
+
+/*
+ * ATTRIBUTE_S_COMMON_PROPERTY_SHOW(display_name_language_code, string);
+ * static struct kobj_attribute string_display_langcode =
+ * __ATTR_RO(display_name_language_code);
+ */
+
+ATTRIBUTE_S_COMMON_PROPERTY_SHOW(display_name, string);
+static struct kobj_attribute string_display_name =
+ __ATTR_RO(display_name);
+
+ATTRIBUTE_PROPERTY_STORE(current_value, string);
+static struct kobj_attribute string_current_val =
+ __ATTR_RW_MODE(current_value, 0644);
+
+ATTRIBUTE_N_PROPERTY_SHOW(min_length, string);
+static struct kobj_attribute string_min_length =
+ __ATTR_RO(min_length);
+
+ATTRIBUTE_N_PROPERTY_SHOW(max_length, string);
+static struct kobj_attribute string_max_length =
+ __ATTR_RO(max_length);
+
+static ssize_t type_show(struct kobject *kobj, struct kobj_attribute *attr,
+ char *buf)
+{
+ return sysfs_emit(buf, "string\n");
+}
+
+static struct kobj_attribute string_type =
+ __ATTR_RO(type);
+
+static struct attribute *string_attrs[] = {
+ &common_display_langcode.attr,
+ &string_display_name.attr,
+ &string_current_val.attr,
+ &string_min_length.attr,
+ &string_max_length.attr,
+ &string_type.attr,
+ NULL
+};
+
+static const struct attribute_group string_attr_group = {
+ .attrs = string_attrs,
+};
+
+int hp_alloc_string_data(void)
+{
+ bioscfg_drv.string_instances_count = hp_get_instance_count(HP_WMI_BIOS_STRING_GUID);
+ bioscfg_drv.string_data = kcalloc(bioscfg_drv.string_instances_count,
+ sizeof(*bioscfg_drv.string_data), GFP_KERNEL);
+ if (!bioscfg_drv.string_data) {
+ bioscfg_drv.string_instances_count = 0;
+ return -ENOMEM;
+ }
+ return 0;
+}
+
+/* Expected Values types associated with each element */
+static const acpi_object_type expected_string_types[] = {
+ [NAME] = ACPI_TYPE_STRING,
+ [VALUE] = ACPI_TYPE_STRING,
+ [PATH] = ACPI_TYPE_STRING,
+ [IS_READONLY] = ACPI_TYPE_INTEGER,
+ [DISPLAY_IN_UI] = ACPI_TYPE_INTEGER,
+ [REQUIRES_PHYSICAL_PRESENCE] = ACPI_TYPE_INTEGER,
+ [SEQUENCE] = ACPI_TYPE_INTEGER,
+ [PREREQUISITES_SIZE] = ACPI_TYPE_INTEGER,
+ [PREREQUISITES] = ACPI_TYPE_STRING,
+ [SECURITY_LEVEL] = ACPI_TYPE_INTEGER,
+ [STR_MIN_LENGTH] = ACPI_TYPE_INTEGER,
+ [STR_MAX_LENGTH] = ACPI_TYPE_INTEGER,
+};
+
+static int hp_populate_string_elements_from_package(union acpi_object *string_obj,
+ int string_obj_count,
+ int instance_id)
+{
+ char *str_value = NULL;
+ int value_len;
+ int ret = 0;
+ u32 int_value = 0;
+ int elem;
+ int reqs;
+ int eloc;
+ int size;
+ struct string_data *string_data = &bioscfg_drv.string_data[instance_id];
+
+ if (!string_obj)
+ return -EINVAL;
+
+ for (elem = 1, eloc = 1; elem < string_obj_count; elem++, eloc++) {
+ /* ONLY look at the first STRING_ELEM_CNT elements */
+ if (eloc == STR_ELEM_CNT)
+ goto exit_string_package;
+
+ switch (string_obj[elem].type) {
+ case ACPI_TYPE_STRING:
+ if (elem != PREREQUISITES) {
+ ret = hp_convert_hexstr_to_str(string_obj[elem].string.pointer,
+ string_obj[elem].string.length,
+ &str_value, &value_len);
+
+ if (ret)
+ continue;
+ }
+ break;
+ case ACPI_TYPE_INTEGER:
+ int_value = (u32)string_obj[elem].integer.value;
+ break;
+ default:
+ pr_warn("Unsupported object type [%d]\n", string_obj[elem].type);
+ continue;
+ }
+
+ /* Check that both expected and read object type match */
+ if (expected_string_types[eloc] != string_obj[elem].type) {
+ pr_err("Error expected type %d for elem %d, but got type %d instead\n",
+ expected_string_types[eloc], elem, string_obj[elem].type);
+ kfree(str_value);
+ return -EIO;
+ }
+
+ /* Assign appropriate element value to corresponding field*/
+ switch (eloc) {
+ case VALUE:
+ strscpy(string_data->current_value,
+ str_value, sizeof(string_data->current_value));
+ break;
+ case PATH:
+ strscpy(string_data->common.path, str_value,
+ sizeof(string_data->common.path));
+ break;
+ case IS_READONLY:
+ string_data->common.is_readonly = int_value;
+ break;
+ case DISPLAY_IN_UI:
+ string_data->common.display_in_ui = int_value;
+ break;
+ case REQUIRES_PHYSICAL_PRESENCE:
+ string_data->common.requires_physical_presence = int_value;
+ break;
+ case SEQUENCE:
+ string_data->common.sequence = int_value;
+ break;
+ case PREREQUISITES_SIZE:
+ if (int_value > MAX_PREREQUISITES_SIZE) {
+ pr_warn("Prerequisites size value exceeded the maximum number of elements supported or data may be malformed\n");
+ int_value = MAX_PREREQUISITES_SIZE;
+ }
+ string_data->common.prerequisites_size = int_value;
+
+ /*
+ * This step is needed to keep the expected
+ * element list pointing to the right obj[elem].type
+ * when the size is zero. PREREQUISITES
+ * object is omitted by BIOS when the size is
+ * zero.
+ */
+ if (string_data->common.prerequisites_size == 0)
+ eloc++;
+ break;
+ case PREREQUISITES:
+ size = min_t(u32, string_data->common.prerequisites_size,
+ MAX_PREREQUISITES_SIZE);
+
+ for (reqs = 0; reqs < size; reqs++) {
+ if (elem >= string_obj_count) {
+ pr_err("Error elem-objects package is too small\n");
+ return -EINVAL;
+ }
+
+ ret = hp_convert_hexstr_to_str(string_obj[elem + reqs].string.pointer,
+ string_obj[elem + reqs].string.length,
+ &str_value, &value_len);
+
+ if (ret)
+ continue;
+
+ strscpy(string_data->common.prerequisites[reqs],
+ str_value,
+ sizeof(string_data->common.prerequisites[reqs]));
+ kfree(str_value);
+ str_value = NULL;
+ }
+ break;
+
+ case SECURITY_LEVEL:
+ string_data->common.security_level = int_value;
+ break;
+ case STR_MIN_LENGTH:
+ string_data->min_length = int_value;
+ break;
+ case STR_MAX_LENGTH:
+ string_data->max_length = int_value;
+ break;
+ default:
+ pr_warn("Invalid element: %d found in String attribute or data may be malformed\n", elem);
+ break;
+ }
+
+ kfree(str_value);
+ str_value = NULL;
+ }
+
+exit_string_package:
+ kfree(str_value);
+ return 0;
+}
+
+/**
+ * hp_populate_string_package_data() -
+ * Populate all properties of an instance under string attribute
+ *
+ * @string_obj: ACPI object with string data
+ * @instance_id: The instance to enumerate
+ * @attr_name_kobj: The parent kernel object
+ */
+int hp_populate_string_package_data(union acpi_object *string_obj,
+ int instance_id,
+ struct kobject *attr_name_kobj)
+{
+ struct string_data *string_data = &bioscfg_drv.string_data[instance_id];
+
+ string_data->attr_name_kobj = attr_name_kobj;
+
+ hp_populate_string_elements_from_package(string_obj,
+ string_obj->package.count,
+ instance_id);
+
+ hp_update_attribute_permissions(string_data->common.is_readonly,
+ &string_current_val);
+ hp_friendly_user_name_update(string_data->common.path,
+ attr_name_kobj->name,
+ string_data->common.display_name,
+ sizeof(string_data->common.display_name));
+ return sysfs_create_group(attr_name_kobj, &string_attr_group);
+}
+
+static int hp_populate_string_elements_from_buffer(u8 *buffer_ptr, u32 *buffer_size,
+ int instance_id)
+{
+ int ret = 0;
+ struct string_data *string_data = &bioscfg_drv.string_data[instance_id];
+
+ /*
+ * Only data relevant to this driver and its functionality is
+ * read. BIOS defines the order in which each * element is
+ * read. Element 0 data is not relevant to this
+ * driver hence it is ignored. For clarity, all element names
+ * (DISPLAY_IN_UI) which defines the order in which is read
+ * and the name matches the variable where the data is stored.
+ *
+ * In earlier implementation, reported errors were ignored
+ * causing the data to remain uninitialized. It is not
+ * possible to determine if data read from BIOS is valid or
+ * not. It is for this reason functions may return a error
+ * without validating the data itself.
+ */
+
+ // VALUE:
+ ret = hp_get_string_from_buffer(&buffer_ptr, buffer_size, string_data->current_value,
+ sizeof(string_data->current_value));
+ if (ret < 0)
+ goto buffer_exit;
+
+ // COMMON:
+ ret = hp_get_common_data_from_buffer(&buffer_ptr, buffer_size, &string_data->common);
+ if (ret < 0)
+ goto buffer_exit;
+
+ // STR_MIN_LENGTH:
+ ret = hp_get_integer_from_buffer(&buffer_ptr, buffer_size,
+ &string_data->min_length);
+ if (ret < 0)
+ goto buffer_exit;
+
+ // STR_MAX_LENGTH:
+ ret = hp_get_integer_from_buffer(&buffer_ptr, buffer_size,
+ &string_data->max_length);
+
+buffer_exit:
+
+ return ret;
+}
+
+/**
+ * hp_populate_string_buffer_data() -
+ * Populate all properties of an instance under string attribute
+ *
+ * @buffer_ptr: Buffer pointer
+ * @buffer_size: Buffer size
+ * @instance_id: The instance to enumerate
+ * @attr_name_kobj: The parent kernel object
+ */
+int hp_populate_string_buffer_data(u8 *buffer_ptr, u32 *buffer_size,
+ int instance_id,
+ struct kobject *attr_name_kobj)
+{
+ struct string_data *string_data = &bioscfg_drv.string_data[instance_id];
+ int ret = 0;
+
+ string_data->attr_name_kobj = attr_name_kobj;
+
+ ret = hp_populate_string_elements_from_buffer(buffer_ptr, buffer_size,
+ instance_id);
+ if (ret < 0)
+ return ret;
+
+ hp_update_attribute_permissions(string_data->common.is_readonly,
+ &string_current_val);
+ hp_friendly_user_name_update(string_data->common.path,
+ attr_name_kobj->name,
+ string_data->common.display_name,
+ sizeof(string_data->common.display_name));
+
+ return sysfs_create_group(attr_name_kobj, &string_attr_group);
+}
+
+/**
+ * hp_exit_string_attributes() - Clear all attribute data
+ *
+ * Clears all data allocated for this group of attributes
+ */
+void hp_exit_string_attributes(void)
+{
+ int instance_id;
+
+ for (instance_id = 0; instance_id < bioscfg_drv.string_instances_count;
+ instance_id++) {
+ struct kobject *attr_name_kobj =
+ bioscfg_drv.string_data[instance_id].attr_name_kobj;
+
+ if (attr_name_kobj)
+ sysfs_remove_group(attr_name_kobj, &string_attr_group);
+ }
+ bioscfg_drv.string_instances_count = 0;
+
+ kfree(bioscfg_drv.string_data);
+ bioscfg_drv.string_data = NULL;
+}
diff --git a/drivers/platform/x86/hp/hp-bioscfg/surestart-attributes.c b/drivers/platform/x86/hp/hp-bioscfg/surestart-attributes.c
new file mode 100644
index 0000000000..b57e42f292
--- /dev/null
+++ b/drivers/platform/x86/hp/hp-bioscfg/surestart-attributes.c
@@ -0,0 +1,132 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Functions corresponding to sure start object type attributes under
+ * BIOS for use with hp-bioscfg driver
+ *
+ * Copyright (c) 2022 HP Development Company, L.P.
+ */
+
+#include "bioscfg.h"
+#include <linux/types.h>
+
+/* Maximum number of log entries supported when log entry size is 16
+ * bytes. This value is calculated by dividing 4096 (page size) by
+ * log entry size.
+ */
+#define LOG_MAX_ENTRIES 254
+
+/*
+ * Current Log entry size. This value size will change in the
+ * future. The driver reads a total of 128 bytes for each log entry
+ * provided by BIOS but only the first 16 bytes are used/read.
+ */
+#define LOG_ENTRY_SIZE 16
+
+/*
+ * audit_log_entry_count_show - Reports the number of
+ * existing audit log entries available
+ * to be read
+ */
+static ssize_t audit_log_entry_count_show(struct kobject *kobj,
+ struct kobj_attribute *attr, char *buf)
+{
+ int ret;
+ u32 count = 0;
+
+ ret = hp_wmi_perform_query(HPWMI_SURESTART_GET_LOG_COUNT,
+ HPWMI_SURESTART,
+ &count, 1, sizeof(count));
+
+ if (ret < 0)
+ return ret;
+
+ return sysfs_emit(buf, "%d,%d,%d\n", count, LOG_ENTRY_SIZE,
+ LOG_MAX_ENTRIES);
+}
+
+/*
+ * audit_log_entries_show() - Return all entries found in log file
+ */
+static ssize_t audit_log_entries_show(struct kobject *kobj,
+ struct kobj_attribute *attr, char *buf)
+{
+ int ret;
+ int i;
+ u32 count = 0;
+ u8 audit_log_buffer[128];
+
+ // Get the number of event logs
+ ret = hp_wmi_perform_query(HPWMI_SURESTART_GET_LOG_COUNT,
+ HPWMI_SURESTART,
+ &count, 1, sizeof(count));
+
+ if (ret < 0)
+ return ret;
+
+ /*
+ * The show() api will not work if the audit logs ever go
+ * beyond 4KB
+ */
+ if (count * LOG_ENTRY_SIZE > PAGE_SIZE)
+ return -EIO;
+
+ /*
+ * We are guaranteed the buffer is 4KB so today all the event
+ * logs will fit
+ */
+ for (i = 0; i < count; i++) {
+ audit_log_buffer[0] = i + 1;
+
+ /*
+ * read audit log entry at a time. 'buf' input value
+ * provides the audit log entry to be read. On
+ * input, Byte 0 = Audit Log entry number from
+ * beginning (1..254)
+ * Entry number 1 is the newest entry whereas the
+ * highest entry number (number of entries) is the
+ * oldest entry.
+ */
+ ret = hp_wmi_perform_query(HPWMI_SURESTART_GET_LOG,
+ HPWMI_SURESTART,
+ audit_log_buffer, 1, 128);
+
+ if (ret < 0 || (LOG_ENTRY_SIZE * i) > PAGE_SIZE) {
+ /*
+ * Encountered a failure while reading
+ * individual logs. Only a partial list of
+ * audit log will be returned.
+ */
+ break;
+ } else {
+ memcpy(buf, audit_log_buffer, LOG_ENTRY_SIZE);
+ buf += LOG_ENTRY_SIZE;
+ }
+ }
+
+ return i * LOG_ENTRY_SIZE;
+}
+
+static struct kobj_attribute sure_start_audit_log_entry_count = __ATTR_RO(audit_log_entry_count);
+static struct kobj_attribute sure_start_audit_log_entries = __ATTR_RO(audit_log_entries);
+
+static struct attribute *sure_start_attrs[] = {
+ &sure_start_audit_log_entry_count.attr,
+ &sure_start_audit_log_entries.attr,
+ NULL
+};
+
+static const struct attribute_group sure_start_attr_group = {
+ .attrs = sure_start_attrs,
+};
+
+void hp_exit_sure_start_attributes(void)
+{
+ sysfs_remove_group(bioscfg_drv.sure_start_attr_kobj,
+ &sure_start_attr_group);
+}
+
+int hp_populate_sure_start_data(struct kobject *attr_name_kobj)
+{
+ bioscfg_drv.sure_start_attr_kobj = attr_name_kobj;
+ return sysfs_create_group(attr_name_kobj, &sure_start_attr_group);
+}
diff --git a/drivers/platform/x86/hp/hp-wmi.c b/drivers/platform/x86/hp/hp-wmi.c
new file mode 100644
index 0000000000..8ebb7be52e
--- /dev/null
+++ b/drivers/platform/x86/hp/hp-wmi.c
@@ -0,0 +1,1729 @@
+// 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"
+};
+
+/* DMI Board names of Victus laptops */
+static const char * const victus_thermal_profile_boards[] = {
+ "8A25"
+};
+
+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_CAMERA_TOGGLE = 0x1A,
+ 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_victus {
+ HP_VICTUS_THERMAL_PROFILE_DEFAULT = 0x00,
+ HP_VICTUS_THERMAL_PROFILE_PERFORMANCE = 0x01,
+ HP_VICTUS_THERMAL_PROFILE_QUIET = 0x03,
+};
+
+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_IGNORE, 0x21a4, }, /* Win Lock On */
+ { KE_IGNORE, 0x121a4, }, /* Win Lock Off */
+ { KE_KEY, 0x21a5, { KEY_PROG2 } }, /* HP Omen Key */
+ { KE_KEY, 0x21a7, { KEY_FN_ESC } },
+ { KE_KEY, 0x21a8, { KEY_PROG2 } }, /* HP Envy x360 programmable key */
+ { 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 input_dev *camera_shutter_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 int camera_shutter_input_setup(void)
+{
+ int err;
+
+ camera_shutter_input_dev = input_allocate_device();
+ if (!camera_shutter_input_dev)
+ return -ENOMEM;
+
+ camera_shutter_input_dev->name = "HP WMI camera shutter";
+ camera_shutter_input_dev->phys = "wmi/input1";
+ camera_shutter_input_dev->id.bustype = BUS_HOST;
+
+ __set_bit(EV_SW, camera_shutter_input_dev->evbit);
+ __set_bit(SW_CAMERA_LENS_COVER, camera_shutter_input_dev->swbit);
+
+ err = input_register_device(camera_shutter_input_dev);
+ if (err)
+ goto err_free_dev;
+
+ return 0;
+
+ err_free_dev:
+ input_free_device(camera_shutter_input_dev);
+ camera_shutter_input_dev = NULL;
+ return err;
+}
+
+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:
+ 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_OMEN_KEY:
+ if (event_data) /* Only should be true for HP Omen */
+ key_code = event_data;
+ else
+ key_code = hp_wmi_read_int(HPWMI_HOTKEY_QUERY);
+
+ 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_CAMERA_TOGGLE:
+ if (!camera_shutter_input_dev)
+ if (camera_shutter_input_setup()) {
+ pr_err("Failed to setup camera shutter input device\n");
+ break;
+ }
+ if (event_data == 0xff)
+ input_report_switch(camera_shutter_input_dev, SW_CAMERA_LENS_COVER, 1);
+ else if (event_data == 0xfe)
+ input_report_switch(camera_shutter_input_dev, SW_CAMERA_LENS_COVER, 0);
+ else
+ pr_warn("Unknown camera shutter state - 0x%x\n", event_data);
+ input_sync(camera_shutter_input_dev);
+ 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 bool is_victus_thermal_profile(void)
+{
+ const char *board_name = dmi_get_system_info(DMI_BOARD_NAME);
+
+ if (!board_name)
+ return false;
+
+ return match_string(victus_thermal_profile_boards,
+ ARRAY_SIZE(victus_thermal_profile_boards),
+ board_name) >= 0;
+}
+
+static int platform_profile_victus_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_VICTUS_THERMAL_PROFILE_PERFORMANCE:
+ *profile = PLATFORM_PROFILE_PERFORMANCE;
+ break;
+ case HP_VICTUS_THERMAL_PROFILE_DEFAULT:
+ *profile = PLATFORM_PROFILE_BALANCED;
+ break;
+ case HP_VICTUS_THERMAL_PROFILE_QUIET:
+ *profile = PLATFORM_PROFILE_QUIET;
+ break;
+ default:
+ return -EOPNOTSUPP;
+ }
+
+ return 0;
+}
+
+static int platform_profile_victus_set(struct platform_profile_handler *pprof,
+ enum platform_profile_option profile)
+{
+ int err, tp;
+
+ switch (profile) {
+ case PLATFORM_PROFILE_PERFORMANCE:
+ tp = HP_VICTUS_THERMAL_PROFILE_PERFORMANCE;
+ break;
+ case PLATFORM_PROFILE_BALANCED:
+ tp = HP_VICTUS_THERMAL_PROFILE_DEFAULT;
+ break;
+ case PLATFORM_PROFILE_QUIET:
+ tp = HP_VICTUS_THERMAL_PROFILE_QUIET;
+ break;
+ default:
+ return -EOPNOTSUPP;
+ }
+
+ err = omen_thermal_profile_set(tp);
+ if (err < 0)
+ 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;
+
+ set_bit(PLATFORM_PROFILE_COOL, platform_profile_handler.choices);
+ } else if (is_victus_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_victus_get;
+ platform_profile_handler.profile_set = platform_profile_victus_set;
+
+ set_bit(PLATFORM_PROFILE_QUIET, platform_profile_handler.choices);
+ } 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 * const 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 (camera_shutter_input_dev)
+ input_unregister_device(camera_shutter_input_dev);
+
+ if (hp_wmi_platform_dev) {
+ platform_device_unregister(hp_wmi_platform_dev);
+ platform_driver_unregister(&hp_wmi_driver);
+ }
+}
+module_exit(hp_wmi_exit);
diff --git a/drivers/platform/x86/hp/hp_accel.c b/drivers/platform/x86/hp/hp_accel.c
new file mode 100644
index 0000000000..5253557677
--- /dev/null
+++ b/drivers/platform/x86/hp/hp_accel.c
@@ -0,0 +1,386 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * hp_accel.c - Interface between LIS3LV02DL driver and HP ACPI BIOS
+ *
+ * Copyright (C) 2007-2008 Yan Burman
+ * Copyright (C) 2008 Eric Piel
+ * Copyright (C) 2008-2009 Pavel Machek
+ */
+
+#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
+
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/dmi.h>
+#include <linux/module.h>
+#include <linux/types.h>
+#include <linux/platform_device.h>
+#include <linux/interrupt.h>
+#include <linux/delay.h>
+#include <linux/wait.h>
+#include <linux/poll.h>
+#include <linux/freezer.h>
+#include <linux/uaccess.h>
+#include <linux/leds.h>
+#include <linux/atomic.h>
+#include <linux/acpi.h>
+#include <linux/i8042.h>
+#include <linux/serio.h>
+#include "../../../misc/lis3lv02d/lis3lv02d.h"
+
+/* Delayed LEDs infrastructure ------------------------------------ */
+
+/* Special LED class that can defer work */
+struct delayed_led_classdev {
+ struct led_classdev led_classdev;
+ struct work_struct work;
+ enum led_brightness new_brightness;
+
+ unsigned int led; /* For driver */
+ void (*set_brightness)(struct delayed_led_classdev *data, enum led_brightness value);
+};
+
+static inline void delayed_set_status_worker(struct work_struct *work)
+{
+ struct delayed_led_classdev *data =
+ container_of(work, struct delayed_led_classdev, work);
+
+ data->set_brightness(data, data->new_brightness);
+}
+
+static inline void delayed_sysfs_set(struct led_classdev *led_cdev,
+ enum led_brightness brightness)
+{
+ struct delayed_led_classdev *data = container_of(led_cdev,
+ struct delayed_led_classdev, led_classdev);
+ data->new_brightness = brightness;
+ schedule_work(&data->work);
+}
+
+/* HP-specific accelerometer driver ------------------------------------ */
+
+/* e0 25, e0 26, e0 27, e0 28 are scan codes that the accelerometer with acpi id
+ * HPQ6000 sends through the keyboard bus */
+#define ACCEL_1 0x25
+#define ACCEL_2 0x26
+#define ACCEL_3 0x27
+#define ACCEL_4 0x28
+
+/* For automatic insertion of the module */
+static const struct acpi_device_id lis3lv02d_device_ids[] = {
+ {"HPQ0004", 0}, /* HP Mobile Data Protection System PNP */
+ {"HPQ6000", 0}, /* HP Mobile Data Protection System PNP */
+ {"HPQ6007", 0}, /* HP Mobile Data Protection System PNP */
+ {"", 0},
+};
+MODULE_DEVICE_TABLE(acpi, lis3lv02d_device_ids);
+
+/**
+ * lis3lv02d_acpi_init - initialize the device for ACPI
+ * @lis3: pointer to the device struct
+ *
+ * Returns 0 on success.
+ */
+static int lis3lv02d_acpi_init(struct lis3lv02d *lis3)
+{
+ return 0;
+}
+
+/**
+ * lis3lv02d_acpi_read - ACPI ALRD method: read a register
+ * @lis3: pointer to the device struct
+ * @reg: the register to read
+ * @ret: result of the operation
+ *
+ * Returns 0 on success.
+ */
+static int lis3lv02d_acpi_read(struct lis3lv02d *lis3, int reg, u8 *ret)
+{
+ struct acpi_device *dev = lis3->bus_priv;
+ union acpi_object arg0 = { ACPI_TYPE_INTEGER };
+ struct acpi_object_list args = { 1, &arg0 };
+ unsigned long long lret;
+ acpi_status status;
+
+ arg0.integer.value = reg;
+
+ status = acpi_evaluate_integer(dev->handle, "ALRD", &args, &lret);
+ if (ACPI_FAILURE(status))
+ return -EINVAL;
+ *ret = lret;
+ return 0;
+}
+
+/**
+ * lis3lv02d_acpi_write - ACPI ALWR method: write to a register
+ * @lis3: pointer to the device struct
+ * @reg: the register to write to
+ * @val: the value to write
+ *
+ * Returns 0 on success.
+ */
+static int lis3lv02d_acpi_write(struct lis3lv02d *lis3, int reg, u8 val)
+{
+ struct acpi_device *dev = lis3->bus_priv;
+ unsigned long long ret; /* Not used when writting */
+ union acpi_object in_obj[2];
+ struct acpi_object_list args = { 2, in_obj };
+
+ in_obj[0].type = ACPI_TYPE_INTEGER;
+ in_obj[0].integer.value = reg;
+ in_obj[1].type = ACPI_TYPE_INTEGER;
+ in_obj[1].integer.value = val;
+
+ if (acpi_evaluate_integer(dev->handle, "ALWR", &args, &ret) != AE_OK)
+ return -EINVAL;
+
+ return 0;
+}
+
+static int lis3lv02d_dmi_matched(const struct dmi_system_id *dmi)
+{
+ lis3_dev.ac = *((union axis_conversion *)dmi->driver_data);
+ pr_info("hardware type %s found\n", dmi->ident);
+
+ return 1;
+}
+
+/* Represents, for each axis seen by userspace, the corresponding hw axis (+1).
+ * If the value is negative, the opposite of the hw value is used. */
+#define DEFINE_CONV(name, x, y, z) \
+ static union axis_conversion lis3lv02d_axis_##name = \
+ { .as_array = { x, y, z } }
+DEFINE_CONV(normal, 1, 2, 3);
+DEFINE_CONV(y_inverted, 1, -2, 3);
+DEFINE_CONV(x_inverted, -1, 2, 3);
+DEFINE_CONV(x_inverted_usd, -1, 2, -3);
+DEFINE_CONV(z_inverted, 1, 2, -3);
+DEFINE_CONV(xy_swap, 2, 1, 3);
+DEFINE_CONV(xy_rotated_left, -2, 1, 3);
+DEFINE_CONV(xy_rotated_left_usd, -2, 1, -3);
+DEFINE_CONV(xy_swap_inverted, -2, -1, 3);
+DEFINE_CONV(xy_rotated_right, 2, -1, 3);
+DEFINE_CONV(xy_swap_yz_inverted, 2, -1, -3);
+
+#define AXIS_DMI_MATCH(_ident, _name, _axis) { \
+ .ident = _ident, \
+ .callback = lis3lv02d_dmi_matched, \
+ .matches = { \
+ DMI_MATCH(DMI_PRODUCT_NAME, _name) \
+ }, \
+ .driver_data = &lis3lv02d_axis_##_axis \
+}
+
+#define AXIS_DMI_MATCH2(_ident, _class1, _name1, \
+ _class2, _name2, \
+ _axis) { \
+ .ident = _ident, \
+ .callback = lis3lv02d_dmi_matched, \
+ .matches = { \
+ DMI_MATCH(DMI_##_class1, _name1), \
+ DMI_MATCH(DMI_##_class2, _name2), \
+ }, \
+ .driver_data = &lis3lv02d_axis_##_axis \
+}
+static const struct dmi_system_id lis3lv02d_dmi_ids[] = {
+ /* product names are truncated to match all kinds of a same model */
+ AXIS_DMI_MATCH("NC64x0", "HP Compaq nc64", x_inverted),
+ AXIS_DMI_MATCH("NC84x0", "HP Compaq nc84", z_inverted),
+ AXIS_DMI_MATCH("NX9420", "HP Compaq nx9420", x_inverted),
+ AXIS_DMI_MATCH("NW9440", "HP Compaq nw9440", x_inverted),
+ AXIS_DMI_MATCH("NC2510", "HP Compaq 2510", y_inverted),
+ AXIS_DMI_MATCH("NC2710", "HP Compaq 2710", xy_swap),
+ AXIS_DMI_MATCH("NC8510", "HP Compaq 8510", xy_swap_inverted),
+ AXIS_DMI_MATCH("HP2133", "HP 2133", xy_rotated_left),
+ AXIS_DMI_MATCH("HP2140", "HP 2140", xy_swap_inverted),
+ AXIS_DMI_MATCH("NC653x", "HP Compaq 653", xy_rotated_left_usd),
+ AXIS_DMI_MATCH("NC6730b", "HP Compaq 6730b", xy_rotated_left_usd),
+ AXIS_DMI_MATCH("NC6730s", "HP Compaq 6730s", xy_swap),
+ AXIS_DMI_MATCH("NC651xx", "HP Compaq 651", xy_rotated_right),
+ AXIS_DMI_MATCH("NC6710x", "HP Compaq 6710", xy_swap_yz_inverted),
+ AXIS_DMI_MATCH("NC6715x", "HP Compaq 6715", y_inverted),
+ AXIS_DMI_MATCH("NC693xx", "HP EliteBook 693", xy_rotated_right),
+ AXIS_DMI_MATCH("NC693xx", "HP EliteBook 853", xy_swap),
+ AXIS_DMI_MATCH("NC854xx", "HP EliteBook 854", y_inverted),
+ AXIS_DMI_MATCH("NC273xx", "HP EliteBook 273", y_inverted),
+ /* Intel-based HP Pavilion dv5 */
+ AXIS_DMI_MATCH2("HPDV5_I",
+ PRODUCT_NAME, "HP Pavilion dv5",
+ BOARD_NAME, "3603",
+ x_inverted),
+ /* AMD-based HP Pavilion dv5 */
+ AXIS_DMI_MATCH2("HPDV5_A",
+ PRODUCT_NAME, "HP Pavilion dv5",
+ BOARD_NAME, "3600",
+ y_inverted),
+ AXIS_DMI_MATCH("DV7", "HP Pavilion dv7", x_inverted),
+ AXIS_DMI_MATCH("HP8710", "HP Compaq 8710", y_inverted),
+ AXIS_DMI_MATCH("HDX18", "HP HDX 18", x_inverted),
+ AXIS_DMI_MATCH("HPB432x", "HP ProBook 432", xy_rotated_left),
+ AXIS_DMI_MATCH("HPB440G3", "HP ProBook 440 G3", x_inverted_usd),
+ AXIS_DMI_MATCH("HPB440G4", "HP ProBook 440 G4", x_inverted),
+ AXIS_DMI_MATCH("HPB442x", "HP ProBook 442", xy_rotated_left),
+ AXIS_DMI_MATCH("HPB450G0", "HP ProBook 450 G0", x_inverted),
+ AXIS_DMI_MATCH("HPB452x", "HP ProBook 452", y_inverted),
+ AXIS_DMI_MATCH("HPB522x", "HP ProBook 522", xy_swap),
+ AXIS_DMI_MATCH("HPB532x", "HP ProBook 532", y_inverted),
+ AXIS_DMI_MATCH("HPB655x", "HP ProBook 655", xy_swap_inverted),
+ AXIS_DMI_MATCH("Mini510x", "HP Mini 510", xy_rotated_left_usd),
+ AXIS_DMI_MATCH("HPB63xx", "HP ProBook 63", xy_swap),
+ AXIS_DMI_MATCH("HPB64xx", "HP ProBook 64", xy_swap),
+ AXIS_DMI_MATCH("HPB64xx", "HP EliteBook 84", xy_swap),
+ AXIS_DMI_MATCH("HPB65xx", "HP ProBook 65", x_inverted),
+ AXIS_DMI_MATCH("HPZBook15", "HP ZBook 15", x_inverted),
+ AXIS_DMI_MATCH("HPZBook17G5", "HP ZBook 17 G5", x_inverted),
+ AXIS_DMI_MATCH("HPZBook17", "HP ZBook 17", xy_swap_yz_inverted),
+ { NULL, }
+/* Laptop models without axis info (yet):
+ * "NC6910" "HP Compaq 6910"
+ * "NC2400" "HP Compaq nc2400"
+ * "NX74x0" "HP Compaq nx74"
+ * "NX6325" "HP Compaq nx6325"
+ * "NC4400" "HP Compaq nc4400"
+ */
+};
+
+static void hpled_set(struct delayed_led_classdev *led_cdev, enum led_brightness value)
+{
+ struct acpi_device *dev = lis3_dev.bus_priv;
+ unsigned long long ret; /* Not used when writing */
+ union acpi_object in_obj[1];
+ struct acpi_object_list args = { 1, in_obj };
+
+ in_obj[0].type = ACPI_TYPE_INTEGER;
+ in_obj[0].integer.value = !!value;
+
+ acpi_evaluate_integer(dev->handle, "ALED", &args, &ret);
+}
+
+static struct delayed_led_classdev hpled_led = {
+ .led_classdev = {
+ .name = "hp::hddprotect",
+ .default_trigger = "none",
+ .brightness_set = delayed_sysfs_set,
+ .flags = LED_CORE_SUSPENDRESUME,
+ },
+ .set_brightness = hpled_set,
+};
+
+static bool hp_accel_i8042_filter(unsigned char data, unsigned char str,
+ struct serio *port)
+{
+ static bool extended;
+
+ if (str & I8042_STR_AUXDATA)
+ return false;
+
+ if (data == 0xe0) {
+ extended = true;
+ return true;
+ } else if (unlikely(extended)) {
+ extended = false;
+
+ switch (data) {
+ case ACCEL_1:
+ case ACCEL_2:
+ case ACCEL_3:
+ case ACCEL_4:
+ return true;
+ default:
+ serio_interrupt(port, 0xe0, 0);
+ return false;
+ }
+ }
+
+ return false;
+}
+
+static int lis3lv02d_probe(struct platform_device *device)
+{
+ int ret;
+
+ lis3_dev.bus_priv = ACPI_COMPANION(&device->dev);
+ lis3_dev.init = lis3lv02d_acpi_init;
+ lis3_dev.read = lis3lv02d_acpi_read;
+ lis3_dev.write = lis3lv02d_acpi_write;
+
+ /* obtain IRQ number of our device from ACPI */
+ ret = platform_get_irq_optional(device, 0);
+ if (ret > 0)
+ lis3_dev.irq = ret;
+
+ /* If possible use a "standard" axes order */
+ if (lis3_dev.ac.x && lis3_dev.ac.y && lis3_dev.ac.z) {
+ pr_info("Using custom axes %d,%d,%d\n",
+ lis3_dev.ac.x, lis3_dev.ac.y, lis3_dev.ac.z);
+ } else if (dmi_check_system(lis3lv02d_dmi_ids) == 0) {
+ pr_info("laptop model unknown, using default axes configuration\n");
+ lis3_dev.ac = lis3lv02d_axis_normal;
+ }
+
+ /* call the core layer do its init */
+ ret = lis3lv02d_init_device(&lis3_dev);
+ if (ret)
+ return ret;
+
+ /* filter to remove HPQ6000 accelerometer data
+ * from keyboard bus stream */
+ if (strstr(dev_name(&device->dev), "HPQ6000"))
+ i8042_install_filter(hp_accel_i8042_filter);
+
+ INIT_WORK(&hpled_led.work, delayed_set_status_worker);
+ ret = led_classdev_register(NULL, &hpled_led.led_classdev);
+ if (ret) {
+ i8042_remove_filter(hp_accel_i8042_filter);
+ lis3lv02d_joystick_disable(&lis3_dev);
+ lis3lv02d_poweroff(&lis3_dev);
+ flush_work(&hpled_led.work);
+ lis3lv02d_remove_fs(&lis3_dev);
+ return ret;
+ }
+
+ return ret;
+}
+
+static void lis3lv02d_remove(struct platform_device *device)
+{
+ i8042_remove_filter(hp_accel_i8042_filter);
+ lis3lv02d_joystick_disable(&lis3_dev);
+ lis3lv02d_poweroff(&lis3_dev);
+
+ led_classdev_unregister(&hpled_led.led_classdev);
+ flush_work(&hpled_led.work);
+
+ lis3lv02d_remove_fs(&lis3_dev);
+}
+
+static int __maybe_unused lis3lv02d_suspend(struct device *dev)
+{
+ /* make sure the device is off when we suspend */
+ lis3lv02d_poweroff(&lis3_dev);
+ return 0;
+}
+
+static int __maybe_unused lis3lv02d_resume(struct device *dev)
+{
+ lis3lv02d_poweron(&lis3_dev);
+ return 0;
+}
+
+static SIMPLE_DEV_PM_OPS(hp_accel_pm, lis3lv02d_suspend, lis3lv02d_resume);
+
+/* For the HP MDPS aka 3D Driveguard */
+static struct platform_driver lis3lv02d_driver = {
+ .probe = lis3lv02d_probe,
+ .remove_new = lis3lv02d_remove,
+ .driver = {
+ .name = "hp_accel",
+ .pm = &hp_accel_pm,
+ .acpi_match_table = lis3lv02d_device_ids,
+ },
+};
+module_platform_driver(lis3lv02d_driver);
+
+MODULE_DESCRIPTION("Glue between LIS3LV02Dx and HP ACPI BIOS and support for disk protection LED.");
+MODULE_AUTHOR("Yan Burman, Eric Piel, Pavel Machek");
+MODULE_LICENSE("GPL");
diff --git a/drivers/platform/x86/hp/tc1100-wmi.c b/drivers/platform/x86/hp/tc1100-wmi.c
new file mode 100644
index 0000000000..5298b0f680
--- /dev/null
+++ b/drivers/platform/x86/hp/tc1100-wmi.c
@@ -0,0 +1,263 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * HP Compaq TC1100 Tablet WMI Extras Driver
+ *
+ * Copyright (C) 2007 Carlos Corbacho <carlos@strangeworlds.co.uk>
+ * Copyright (C) 2004 Jamey Hicks <jamey.hicks@hp.com>
+ * Copyright (C) 2001, 2002 Andy Grover <andrew.grover@intel.com>
+ * Copyright (C) 2001, 2002 Paul Diefenbaugh <paul.s.diefenbaugh@intel.com>
+ */
+
+#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/slab.h>
+#include <linux/init.h>
+#include <linux/types.h>
+#include <linux/acpi.h>
+#include <linux/platform_device.h>
+
+#define GUID "C364AC71-36DB-495A-8494-B439D472A505"
+
+#define TC1100_INSTANCE_WIRELESS 1
+#define TC1100_INSTANCE_JOGDIAL 2
+
+MODULE_AUTHOR("Jamey Hicks, Carlos Corbacho");
+MODULE_DESCRIPTION("HP Compaq TC1100 Tablet WMI Extras");
+MODULE_LICENSE("GPL");
+MODULE_ALIAS("wmi:C364AC71-36DB-495A-8494-B439D472A505");
+
+static struct platform_device *tc1100_device;
+
+struct tc1100_data {
+ u32 wireless;
+ u32 jogdial;
+};
+
+#ifdef CONFIG_PM
+static struct tc1100_data suspend_data;
+#endif
+
+/* --------------------------------------------------------------------------
+ Device Management
+ -------------------------------------------------------------------------- */
+
+static int get_state(u32 *out, u8 instance)
+{
+ u32 tmp;
+ acpi_status status;
+ struct acpi_buffer result = { ACPI_ALLOCATE_BUFFER, NULL };
+ union acpi_object *obj;
+
+ if (!out)
+ return -EINVAL;
+
+ if (instance > 2)
+ return -ENODEV;
+
+ status = wmi_query_block(GUID, instance, &result);
+ if (ACPI_FAILURE(status))
+ return -ENODEV;
+
+ obj = (union acpi_object *) result.pointer;
+ if (obj && obj->type == ACPI_TYPE_INTEGER) {
+ tmp = obj->integer.value;
+ } else {
+ tmp = 0;
+ }
+
+ if (result.length > 0)
+ kfree(result.pointer);
+
+ switch (instance) {
+ case TC1100_INSTANCE_WIRELESS:
+ *out = (tmp == 3) ? 1 : 0;
+ return 0;
+ case TC1100_INSTANCE_JOGDIAL:
+ *out = (tmp == 1) ? 0 : 1;
+ return 0;
+ default:
+ return -ENODEV;
+ }
+}
+
+static int set_state(u32 *in, u8 instance)
+{
+ u32 value;
+ acpi_status status;
+ struct acpi_buffer input;
+
+ if (!in)
+ return -EINVAL;
+
+ if (instance > 2)
+ return -ENODEV;
+
+ switch (instance) {
+ case TC1100_INSTANCE_WIRELESS:
+ value = (*in) ? 1 : 2;
+ break;
+ case TC1100_INSTANCE_JOGDIAL:
+ value = (*in) ? 0 : 1;
+ break;
+ default:
+ return -ENODEV;
+ }
+
+ input.length = sizeof(u32);
+ input.pointer = &value;
+
+ status = wmi_set_block(GUID, instance, &input);
+ if (ACPI_FAILURE(status))
+ return -ENODEV;
+
+ return 0;
+}
+
+/* --------------------------------------------------------------------------
+ FS Interface (/sys)
+ -------------------------------------------------------------------------- */
+
+/*
+ * Read/ write bool sysfs macro
+ */
+#define show_set_bool(value, instance) \
+static ssize_t \
+show_bool_##value(struct device *dev, struct device_attribute *attr, \
+ char *buf) \
+{ \
+ u32 result; \
+ acpi_status status = get_state(&result, instance); \
+ if (ACPI_SUCCESS(status)) \
+ return sprintf(buf, "%d\n", result); \
+ return sprintf(buf, "Read error\n"); \
+} \
+\
+static ssize_t \
+set_bool_##value(struct device *dev, struct device_attribute *attr, \
+ const char *buf, size_t count) \
+{ \
+ u32 tmp = simple_strtoul(buf, NULL, 10); \
+ acpi_status status = set_state(&tmp, instance); \
+ if (ACPI_FAILURE(status)) \
+ return -EINVAL; \
+ return count; \
+} \
+static DEVICE_ATTR(value, S_IRUGO | S_IWUSR, \
+ show_bool_##value, set_bool_##value);
+
+show_set_bool(wireless, TC1100_INSTANCE_WIRELESS);
+show_set_bool(jogdial, TC1100_INSTANCE_JOGDIAL);
+
+static struct attribute *tc1100_attributes[] = {
+ &dev_attr_wireless.attr,
+ &dev_attr_jogdial.attr,
+ NULL
+};
+
+static const struct attribute_group tc1100_attribute_group = {
+ .attrs = tc1100_attributes,
+};
+
+/* --------------------------------------------------------------------------
+ Driver Model
+ -------------------------------------------------------------------------- */
+
+static int __init tc1100_probe(struct platform_device *device)
+{
+ return sysfs_create_group(&device->dev.kobj, &tc1100_attribute_group);
+}
+
+
+static void tc1100_remove(struct platform_device *device)
+{
+ sysfs_remove_group(&device->dev.kobj, &tc1100_attribute_group);
+}
+
+#ifdef CONFIG_PM
+static int tc1100_suspend(struct device *dev)
+{
+ int ret;
+
+ ret = get_state(&suspend_data.wireless, TC1100_INSTANCE_WIRELESS);
+ if (ret)
+ return ret;
+
+ ret = get_state(&suspend_data.jogdial, TC1100_INSTANCE_JOGDIAL);
+ if (ret)
+ return ret;
+
+ return 0;
+}
+
+static int tc1100_resume(struct device *dev)
+{
+ int ret;
+
+ ret = set_state(&suspend_data.wireless, TC1100_INSTANCE_WIRELESS);
+ if (ret)
+ return ret;
+
+ ret = set_state(&suspend_data.jogdial, TC1100_INSTANCE_JOGDIAL);
+ if (ret)
+ return ret;
+
+ return 0;
+}
+
+static const struct dev_pm_ops tc1100_pm_ops = {
+ .suspend = tc1100_suspend,
+ .resume = tc1100_resume,
+ .freeze = tc1100_suspend,
+ .restore = tc1100_resume,
+};
+#endif
+
+static struct platform_driver tc1100_driver = {
+ .driver = {
+ .name = "tc1100-wmi",
+#ifdef CONFIG_PM
+ .pm = &tc1100_pm_ops,
+#endif
+ },
+ .remove_new = tc1100_remove,
+};
+
+static int __init tc1100_init(void)
+{
+ int error;
+
+ if (!wmi_has_guid(GUID))
+ return -ENODEV;
+
+ tc1100_device = platform_device_alloc("tc1100-wmi", PLATFORM_DEVID_NONE);
+ if (!tc1100_device)
+ return -ENOMEM;
+
+ error = platform_device_add(tc1100_device);
+ if (error)
+ goto err_device_put;
+
+ error = platform_driver_probe(&tc1100_driver, tc1100_probe);
+ if (error)
+ goto err_device_del;
+
+ pr_info("HP Compaq TC1100 Tablet WMI Extras loaded\n");
+ return 0;
+
+ err_device_del:
+ platform_device_del(tc1100_device);
+ err_device_put:
+ platform_device_put(tc1100_device);
+ return error;
+}
+
+static void __exit tc1100_exit(void)
+{
+ platform_device_unregister(tc1100_device);
+ platform_driver_unregister(&tc1100_driver);
+}
+
+module_init(tc1100_init);
+module_exit(tc1100_exit);