From: Mustafa Ekşi <mustafa.eskieksi@xxxxxxxxx> This wmi driver supports Casper Excalibur laptops' changing keyboard backlight, reading fan speeds and changing power profiles. Multicolor led device is used for backlight, platform_profile for power management and hwmon for fan speeds. It supports both old (10th gen or older) and new (11th gen or newer) laptops. It uses x86_match_cpu to check if the laptop is old or new. This driver's Multicolor keyboard backlight API is very similar to Rishit Bansal's proposed API. Signed-off-by: Mustafa Ekşi <mustafa.eskieksi@xxxxxxxxx> --- Changes in v3: - Replaced led_control attribute with multicolor led interface. - Added struct led_cache, instead of storing only last color change. - Added dmi list to prevent registering platform_profile driver in models that doesn't have this feature. - Added a x86_cpu_id to differentiate older laptops that are reporting fan speeds in big-endian. Also newer laptops have a different power profile scheme. I'm using x86_cpu_id because they don't have a difference in model names, only in cpu generations (the official driver download page makes you select your cpu's generation too). - Removed hwmon_pwm device in favor of platform_profile driver. It indirectly affects fans' speed but they also affect frequency and power consumption as well. - Replaced handwritten masks with GENMASK equivalents. - Replaced led_classdev_register with devm_led_classdev_multicolor_register. This should solve the bug where led_classdev remains registered even if casper_wmi_probe returns -ENODEV. - Removed select NEW_LEDS and LEDS_CLASS, because it creates recursive dependencies. - And some minor changes. Changes in v2: - Added masks for - Changed casper_set and casper_query returns Linux error code rather than acpi_status. - replaced complicated bit operations with FIELD_GET. - Fixed some indentation and spacing. - Broke fan speeds further. - Moved module metadata to the end of the file. --- MAINTAINERS | 6 + drivers/platform/x86/Kconfig | 14 + drivers/platform/x86/Makefile | 1 + drivers/platform/x86/casper-wmi.c | 639 ++++++++++++++++++++++++++++++ 4 files changed, 660 insertions(+) create mode 100644 drivers/platform/x86/casper-wmi.c diff --git a/MAINTAINERS b/MAINTAINERS index 1aabf1c15bb..e4cb770c990 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -4724,6 +4724,12 @@ S: Maintained W: https://wireless.wiki.kernel.org/en/users/Drivers/carl9170 F: drivers/net/wireless/ath/carl9170/ +CASPER EXCALIBUR WMI DRIVER +M: Mustafa Ekşi <mustafa.eskieksi@xxxxxxxxx> +L: platform-driver-x86@xxxxxxxxxxxxxxx +S: Maintained +F: drivers/platform/x86/casper-wmi.c + CAVIUM I2C DRIVER M: Robert Richter <rric@xxxxxxxxxx> S: Odd Fixes diff --git a/drivers/platform/x86/Kconfig b/drivers/platform/x86/Kconfig index bdd302274b9..4f951bcac1a 100644 --- a/drivers/platform/x86/Kconfig +++ b/drivers/platform/x86/Kconfig @@ -1127,6 +1127,20 @@ config SEL3350_PLATFORM To compile this driver as a module, choose M here: the module will be called sel3350-platform. +config CASPER_WMI + tristate "Casper Excalibur Laptop WMI driver" + depends on ACPI_WMI + depends on HWMON + depends on LEDS_CLASS_MULTICOLOR + select ACPI_PLATFORM_PROFILE + help + Say Y here if you want to support WMI-based fan speed reporting, + power management and keyboard backlight support on Casper Excalibur + Laptops. + + To compile this driver as a module, choose M here: the module will + be called casper-wmi. + endif # X86_PLATFORM_DEVICES config P2SB diff --git a/drivers/platform/x86/Makefile b/drivers/platform/x86/Makefile index 1de432e8861..4b527dd44ad 100644 --- a/drivers/platform/x86/Makefile +++ b/drivers/platform/x86/Makefile @@ -14,6 +14,7 @@ obj-$(CONFIG_MXM_WMI) += mxm-wmi.o obj-$(CONFIG_NVIDIA_WMI_EC_BACKLIGHT) += nvidia-wmi-ec-backlight.o obj-$(CONFIG_XIAOMI_WMI) += xiaomi-wmi.o obj-$(CONFIG_GIGABYTE_WMI) += gigabyte-wmi.o +obj-$(CONFIG_CASPER_WMI) += casper-wmi.o # Acer obj-$(CONFIG_ACERHDF) += acerhdf.o diff --git a/drivers/platform/x86/casper-wmi.c b/drivers/platform/x86/casper-wmi.c new file mode 100644 index 00000000000..80e1e2b16fb --- /dev/null +++ b/drivers/platform/x86/casper-wmi.c @@ -0,0 +1,639 @@ +// SPDX-License-Identifier: GPL-2.0-or-later +#include <linux/module.h> +#include <linux/bits.h> +#include <linux/bitops.h> +#include <linux/acpi.h> +#include <linux/leds.h> +#include <linux/slab.h> +#include <linux/wmi.h> +#include <linux/device.h> +#include <linux/hwmon.h> +#include <linux/sysfs.h> +#include <linux/types.h> +#include <acpi/acexcep.h> +#include <linux/bitfield.h> +#include <linux/sysfs.h> +#include <linux/platform_profile.h> +#include <linux/led-class-multicolor.h> + +#include <linux/dmi.h> +#include <asm/cpu_device_id.h> +#include <asm/intel-family.h> + +#define CASPER_WMI_GUID "644C5791-B7B0-4123-A90B-E93876E0DAAD" + +#define CASPER_READ 0xfa00 +#define CASPER_WRITE 0xfb00 +#define CASPER_GET_HARDWAREINFO 0x0200 +#define CASPER_SET_LED 0x0100 +#define CASPER_POWERPLAN 0x0300 + +#define CASPER_KEYBOARD_LED_1 0x03 +#define CASPER_KEYBOARD_LED_2 0x04 +#define CASPER_KEYBOARD_LED_3 0x05 +#define CASPER_ALL_KEYBOARD_LEDS 0x06 +#define CASPER_CORNER_LEDS 0x07 +#define CASPER_LED_COUNT 4 + +const char * const zone_names[CASPER_LED_COUNT] = { + "casper::kbd_zoned_backlight-right", + "casper::kbd_zoned_backlight-middle", + "casper::kbd_zoned_backlight-left", + "casper::kbd_zoned_backlight-corners", +}; + +#define CASPER_LED_ALPHA GENMASK(31, 24) +#define CASPER_LED_RED GENMASK(23, 16) +#define CASPER_LED_GREEN GENMASK(15, 8) +#define CASPER_LED_BLUE GENMASK(7, 0) +#define CASPER_DEFAULT_COLOR (CASPER_LED_RED | CASPER_LED_GREEN | \ + CASPER_LED_BLUE) +#define CASPER_FAN_CPU 0 +#define CASPER_FAN_GPU 1 + +enum casper_power_profile_old { + CASPER_HIGH_PERFORMANCE = 1, + CASPER_GAMING = 2, + CASPER_TEXT_MODE = 3, + CASPER_POWERSAVE = 4 +}; + +enum casper_power_profile_new { + CASPER_NEW_HIGH_PEROFRMANCE = 0, + CASPER_NEW_GAMING = 1, + CASPER_NEW_AUDIO = 2 +}; + +struct casper_quirk_entry { + bool big_endian_fans; + bool no_power_profiles; + bool new_power_scheme; +}; + +struct casper_wmi_driver { + struct wmi_device *wdev; + struct platform_profile_handler handler; +}; + +struct casper_wmi_args { + u16 a0, a1; + u32 a2, a3, a4, a5, a6, a7, a8; +}; + +enum casper_led_mode { + LED_NORMAL = 0x10, + LED_BLINK = 0x20, + LED_FADE = 0x30, + LED_HEARTBEAT = 0x40, + LED_REPEAT = 0x50, + LED_RANDOM = 0x60 +}; + +struct casper_led_cache { + u32 colors[CASPER_LED_COUNT]; + u8 last_keyboard_led; +}; + +static struct casper_led_cache led_cache = { + .colors = { + CASPER_DEFAULT_COLOR, CASPER_DEFAULT_COLOR, + CASPER_DEFAULT_COLOR, CASPER_DEFAULT_COLOR, + }, + .last_keyboard_led = CASPER_ALL_KEYBOARD_LEDS, +}; + +static struct casper_quirk_entry *quirk_applied; +static struct led_classdev_mc *casper_kbd_mcled_info; + +static struct mc_subled casper_kbd_mcled_sub[CASPER_LED_COUNT][1] = { + { + { + .color_index = LED_COLOR_ID_RGB, + .brightness = 2, + .intensity = CASPER_DEFAULT_COLOR + } + }, + { + { + .color_index = LED_COLOR_ID_RGB, + .brightness = 2, + .intensity = CASPER_DEFAULT_COLOR + } + }, + { + { + .color_index = LED_COLOR_ID_RGB, + .brightness = 2, + .intensity = CASPER_DEFAULT_COLOR + } + }, + { + { + .color_index = LED_COLOR_ID_RGB, + .brightness = 2, + .intensity = CASPER_DEFAULT_COLOR + } + }, +}; + +static int casper_set(struct wmi_device *wdev, u16 a1, u8 led_id, u32 data) +{ + acpi_status ret; + struct casper_wmi_args wmi_args; + struct acpi_buffer input; + + wmi_args = (struct casper_wmi_args) { + .a0 = CASPER_WRITE, + .a1 = a1, + .a2 = led_id, + .a3 = data + }; + + input = (struct acpi_buffer) { + (acpi_size) sizeof(struct casper_wmi_args), + &wmi_args + }; + + ret = wmidev_block_set(wdev, 0, &input); + if (ACPI_FAILURE(ret)) + return -EINVAL; + + return 0; +} + +static int casper_query(struct wmi_device *wdev, u16 a1, + struct casper_wmi_args *out) +{ + union acpi_object *obj; + struct casper_wmi_args wmi_args; + struct acpi_buffer input; + int ret; + + wmi_args = (struct casper_wmi_args) { + .a0 = CASPER_READ, + .a1 = a1 + }; + input = (struct acpi_buffer) { + (acpi_size) sizeof(struct casper_wmi_args), + &wmi_args + }; + + ret = wmidev_block_set(wdev, 0, &input); + if (ACPI_FAILURE(ret)) + return -EIO; + + obj = wmidev_block_query(wdev, 0); + if (IS_ERR_OR_NULL(obj)) + return -EIO; + + if (obj->type != ACPI_TYPE_BUFFER) { // obj will be 0x10 on failure + ret = -EINVAL; + goto out; + } + if (obj->buffer.length != sizeof(struct casper_wmi_args)) { + ret = -EIO; + goto out; + } + + memcpy(out, obj->buffer.pointer, sizeof(struct casper_wmi_args)); + +out: + kfree(obj); + return ret; +} + +static enum led_brightness get_casper_brightness(struct led_classdev *led_cdev) +{ + struct wmi_device *wdev = to_wmi_device(led_cdev->dev->parent); + struct casper_wmi_args hardware_alpha = {0}; + + if (strcmp(led_cdev->name, zone_names[3]) == 0) + return FIELD_GET(CASPER_LED_ALPHA, led_cache.colors[3]); + + casper_query(wdev, CASPER_GET_HARDWAREINFO, &hardware_alpha); + + return hardware_alpha.a6; +} + +static void set_casper_brightness(struct led_classdev *led_cdev, + enum led_brightness brightness) +{ + u32 bright_with_mode, bright_prep, led_data, led_data_no_alpha; + struct wmi_device *wdev = to_wmi_device(led_cdev->dev->parent); + int ret; + size_t zone; + u8 zone_to_change; + + for (size_t i = 0; i < CASPER_LED_COUNT; i++) + if (strcmp(led_cdev->name, zone_names[i]) == 0) + zone = i; + + if (zone == 3) + zone_to_change = CASPER_CORNER_LEDS; + else + zone_to_change = zone + CASPER_KEYBOARD_LED_1; + + led_data_no_alpha = casper_kbd_mcled_info[zone].subled_info[0].intensity + & ~CASPER_LED_ALPHA; + if ((led_cache.colors[zone] & ~CASPER_LED_ALPHA) == led_data_no_alpha) + bright_with_mode = brightness | LED_NORMAL; + else + bright_with_mode = get_casper_brightness(led_cdev) | LED_NORMAL; + + bright_prep = FIELD_PREP(CASPER_LED_ALPHA, bright_with_mode); + led_data = bright_prep | led_data_no_alpha; + ret = casper_set(wdev, CASPER_SET_LED, zone_to_change, led_data); + if (ret) + return; + + led_cache.colors[zone] = led_data; +} + +static int casper_platform_profile_get(struct platform_profile_handler *pprof, + enum platform_profile_option *profile) +{ + struct casper_wmi_driver *drv = container_of(pprof, + struct casper_wmi_driver, + handler); + struct casper_wmi_args ret_buff = {0}; + int ret; + + ret = casper_query(drv->wdev, CASPER_POWERPLAN, &ret_buff); + if (ret) + return ret; + + if (quirk_applied->new_power_scheme) { + switch (ret_buff.a2) { + case CASPER_NEW_HIGH_PEROFRMANCE: + *profile = PLATFORM_PROFILE_PERFORMANCE; + break; + case CASPER_NEW_GAMING: + *profile = PLATFORM_PROFILE_BALANCED; + break; + case CASPER_NEW_AUDIO: + *profile = PLATFORM_PROFILE_LOW_POWER; + break; + default: + return -EINVAL; + } + return 0; + } + + switch (ret_buff.a2) { + case CASPER_HIGH_PERFORMANCE: + *profile = PLATFORM_PROFILE_PERFORMANCE; + break; + case CASPER_GAMING: + *profile = PLATFORM_PROFILE_BALANCED_PERFORMANCE; + break; + case CASPER_TEXT_MODE: + *profile = PLATFORM_PROFILE_BALANCED; + break; + case CASPER_POWERSAVE: + *profile = PLATFORM_PROFILE_LOW_POWER; + break; + default: + return -EINVAL; + } + + return 0; +} + +static int casper_platform_profile_set(struct platform_profile_handler *pprof, + enum platform_profile_option profile) +{ + struct casper_wmi_driver *drv = container_of(pprof, + struct casper_wmi_driver, + handler); + enum casper_power_profile_old prf_old; + enum casper_power_profile_new prf_new; + + if (quirk_applied->new_power_scheme) { + + switch (profile) { + case PLATFORM_PROFILE_PERFORMANCE: + prf_new = CASPER_NEW_HIGH_PEROFRMANCE; + break; + case PLATFORM_PROFILE_BALANCED: + prf_new = CASPER_NEW_GAMING; + break; + case PLATFORM_PROFILE_LOW_POWER: + prf_new = CASPER_NEW_AUDIO; + break; + default: + return -EINVAL; + } + + return casper_set(drv->wdev, CASPER_POWERPLAN, prf_new, 0); + } + + switch (profile) { + case PLATFORM_PROFILE_PERFORMANCE: + prf_old = CASPER_HIGH_PERFORMANCE; + break; + case PLATFORM_PROFILE_BALANCED_PERFORMANCE: + prf_old = CASPER_GAMING; + break; + case PLATFORM_PROFILE_BALANCED: + prf_old = CASPER_TEXT_MODE; + break; + case PLATFORM_PROFILE_LOW_POWER: + prf_old = CASPER_POWERSAVE; + break; + default: + return -EINVAL; + } + + return casper_set(drv->wdev, CASPER_POWERPLAN, prf_old, 0); +} + +static umode_t casper_wmi_hwmon_is_visible(const void *drvdata, + enum hwmon_sensor_types type, + u32 attr, int channel) +{ + if (type == hwmon_fan) + return 0444; + + return 0; +} + +static int casper_wmi_hwmon_read(struct device *dev, + enum hwmon_sensor_types type, u32 attr, + int channel, long *val) +{ + struct casper_wmi_args out = { 0 }; + struct wmi_device *wdev = to_wmi_device(dev->parent); + int ret; + + if (type != hwmon_fan) + return -EOPNOTSUPP; + + ret = casper_query(wdev, CASPER_GET_HARDWAREINFO, &out); + if (ret) + return ret; + + switch (channel) { + case CASPER_FAN_CPU: + if (quirk_applied->big_endian_fans) + *val = be16_to_cpu((u16) out.a4); + else + *val = out.a5; + break; + case CASPER_FAN_GPU: + if (quirk_applied->big_endian_fans) + *val = be16_to_cpu((u16) out.a5); + else + *val = out.a5; + break; + } + + return 0; +} + +static int casper_wmi_hwmon_read_string(struct device *dev, + enum hwmon_sensor_types type, u32 attr, + int channel, const char **str) +{ + if (type != hwmon_fan) + return -EOPNOTSUPP; + + switch (channel) { + case CASPER_FAN_CPU: + *str = "cpu_fan_speed"; + break; + case CASPER_FAN_GPU: + *str = "gpu_fan_speed"; + break; + } + return 0; +} + +static const struct hwmon_ops casper_wmi_hwmon_ops = { + .is_visible = &casper_wmi_hwmon_is_visible, + .read = &casper_wmi_hwmon_read, + .read_string = &casper_wmi_hwmon_read_string, +}; + +static const struct hwmon_channel_info *const casper_wmi_hwmon_info[] = { + HWMON_CHANNEL_INFO(fan, + HWMON_F_INPUT | HWMON_F_LABEL, + HWMON_F_INPUT | HWMON_F_LABEL), + NULL +}; + +static const struct hwmon_chip_info casper_wmi_hwmon_chip_info = { + .ops = &casper_wmi_hwmon_ops, + .info = casper_wmi_hwmon_info, +}; + +static struct casper_quirk_entry gen_older_than_11 = { + .big_endian_fans = true, + .new_power_scheme = false +}; + +static struct casper_quirk_entry gen_newer_than_11 = { + .big_endian_fans = false, + .new_power_scheme = true +}; + +static const struct x86_cpu_id casper_gen[] = { + X86_MATCH_INTEL_FAM6_MODEL(KABYLAKE, &gen_older_than_11), + X86_MATCH_INTEL_FAM6_MODEL(COMETLAKE, &gen_older_than_11), + X86_MATCH_INTEL_FAM6_MODEL(TIGERLAKE, &gen_newer_than_11), + X86_MATCH_INTEL_FAM6_MODEL(ALDERLAKE, &gen_newer_than_11), + X86_MATCH_INTEL_FAM6_MODEL(RAPTORLAKE, &gen_newer_than_11), + X86_MATCH_INTEL_FAM6_MODEL(METEORLAKE, &gen_newer_than_11), + {} +}; + +/* + * These quirks don't get stored in quirk_applied. + */ +static struct casper_quirk_entry quirk_no_power_profile = { + .no_power_profiles = true +}; + +static struct casper_quirk_entry quirk_has_power_profile = { + .no_power_profiles = false +}; + +static const struct dmi_system_id casper_quirks[] = { + { + .ident = "CASPER EXCALIBUR G650", + .matches = { + DMI_MATCH(DMI_SYS_VENDOR, + "CASPER BILGISAYAR SISTEMLERI"), + DMI_MATCH(DMI_PRODUCT_NAME, "EXCALIBUR G650") + }, + .driver_data = &quirk_no_power_profile + }, + { + .ident = "CASPER EXCALIBUR G670", + .matches = { + DMI_MATCH(DMI_SYS_VENDOR, + "CASPER BILGISAYAR SISTEMLERI"), + DMI_MATCH(DMI_PRODUCT_NAME, "EXCALIBUR G670") + }, + .driver_data = &quirk_no_power_profile + }, + { + .ident = "CASPER EXCALIBUR G750", + .matches = { + DMI_MATCH(DMI_SYS_VENDOR, + "CASPER BILGISAYAR SISTEMLERI"), + DMI_MATCH(DMI_PRODUCT_NAME, "EXCALIBUR G750") + }, + .driver_data = &quirk_no_power_profile + }, + { + .ident = "CASPER EXCALIBUR G770", + .matches = { + DMI_MATCH(DMI_SYS_VENDOR, + "CASPER BILGISAYAR SISTEMLERI"), + DMI_MATCH(DMI_PRODUCT_NAME, "EXCALIBUR G770") + }, + .driver_data = &quirk_has_power_profile + }, + { + .ident = "CASPER EXCALIBUR G780", + .matches = { + DMI_MATCH(DMI_SYS_VENDOR, + "CASPER BILGISAYAR SISTEMLERI"), + DMI_MATCH(DMI_PRODUCT_NAME, "EXCALIBUR G780") + }, + .driver_data = &quirk_has_power_profile + }, + { + .ident = "CASPER EXCALIBUR G870", + .matches = { + DMI_MATCH(DMI_SYS_VENDOR, + "CASPER BILGISAYAR SISTEMLERI"), + DMI_MATCH(DMI_PRODUCT_NAME, "EXCALIBUR G870") + }, + .driver_data = &quirk_has_power_profile + }, + { + .ident = "CASPER EXCALIBUR G900", + .matches = { + DMI_MATCH(DMI_SYS_VENDOR, + "CASPER BILGISAYAR SISTEMLERI"), + DMI_MATCH(DMI_PRODUCT_NAME, "EXCALIBUR G900") + }, + .driver_data = &quirk_has_power_profile + }, + { + .ident = "CASPER EXCALIBUR G911", + .matches = { + DMI_MATCH(DMI_SYS_VENDOR, + "CASPER BILGISAYAR SISTEMLERI"), + DMI_MATCH(DMI_PRODUCT_NAME, "EXCALIBUR G911") + }, + .driver_data = &quirk_has_power_profile + }, + { } +}; + +static int casper_wmi_probe(struct wmi_device *wdev, const void *context) +{ + struct device *hwmon_dev; + struct casper_wmi_driver *drv; + const struct x86_cpu_id *gen_id; + const struct dmi_system_id *dmi_id; + int ret; + + gen_id = x86_match_cpu(casper_gen); + if (!gen_id) + return -ENODEV; + + quirk_applied = (struct casper_quirk_entry *) gen_id->driver_data; + + dmi_id = dmi_first_match(casper_quirks); + if (!dmi_id) + return -ENODEV; + + quirk_applied->no_power_profiles = ((struct casper_quirk_entry *) + dmi_id->driver_data)->no_power_profiles; + + casper_kbd_mcled_info = devm_kzalloc(&wdev->dev, + sizeof(*casper_kbd_mcled_info)*CASPER_LED_COUNT, GFP_KERNEL); + if (casper_kbd_mcled_info == NULL) + return -ENOMEM; + + for (size_t i = 0; i < CASPER_LED_COUNT; i++) { + casper_kbd_mcled_info[i] = (struct led_classdev_mc) { + .led_cdev = { + .name = zone_names[i], + .brightness = 0, + .max_brightness = 2, + .brightness_set = &set_casper_brightness, + .brightness_get = &get_casper_brightness, + .color = LED_COLOR_ID_RGB, + }, + .num_colors = ARRAY_SIZE(casper_kbd_mcled_sub[i]), + .subled_info = casper_kbd_mcled_sub[i] + }; + + ret = devm_led_classdev_multicolor_register(&wdev->dev, + &casper_kbd_mcled_info[i]); + if (ret) + return -ENODEV; + } + + hwmon_dev = devm_hwmon_device_register_with_info(&wdev->dev, + "casper_wmi", wdev, + &casper_wmi_hwmon_chip_info, + NULL); + if (IS_ERR_OR_NULL(hwmon_dev)) + return -ENODEV; + + if (!quirk_applied->no_power_profiles) { + drv = devm_kzalloc(&wdev->dev, sizeof(*drv), GFP_KERNEL); + if (drv == NULL) + return -ENOMEM; + drv->wdev = wdev; + dev_set_drvdata(&wdev->dev, drv); + + drv->handler.profile_get = casper_platform_profile_get; + drv->handler.profile_set = casper_platform_profile_set; + + set_bit(PLATFORM_PROFILE_LOW_POWER, drv->handler.choices); + set_bit(PLATFORM_PROFILE_BALANCED, drv->handler.choices); + if (!quirk_applied->new_power_scheme) + set_bit(PLATFORM_PROFILE_BALANCED_PERFORMANCE, + drv->handler.choices); + set_bit(PLATFORM_PROFILE_PERFORMANCE, drv->handler.choices); + + ret = platform_profile_register(&drv->handler); + if (ret) + return ret; + } + + return 0; +} + +static void casper_wmi_remove(struct wmi_device *wdev) +{ + if (!quirk_applied->no_power_profiles) + platform_profile_remove(); +} + +static const struct wmi_device_id casper_wmi_id_table[] = { + { CASPER_WMI_GUID, NULL }, + { } +}; + +static struct wmi_driver casper_wmi_driver = { + .driver = { + .name = "casper-wmi", + }, + .id_table = casper_wmi_id_table, + .probe = casper_wmi_probe, + .remove = &casper_wmi_remove, +}; + +module_wmi_driver(casper_wmi_driver); +MODULE_DEVICE_TABLE(wmi, casper_wmi_id_table); + +MODULE_AUTHOR("Mustafa Ekşi <mustafa.eskieksi@xxxxxxxxx>"); +MODULE_DESCRIPTION("Casper Excalibur Laptop WMI driver"); +MODULE_LICENSE("GPL"); -- 2.44.0
