^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1) // SPDX-License-Identifier: GPL-2.0-or-later
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3) * toshiba_wmi.c - Toshiba WMI Hotkey Driver
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) * Copyright (C) 2015 Azael Avalos <coproscefalo@gmail.com>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8) #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) #include <linux/kernel.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) #include <linux/module.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) #include <linux/init.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) #include <linux/types.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) #include <linux/acpi.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) #include <linux/input.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) #include <linux/input/sparse-keymap.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) #include <linux/dmi.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) MODULE_AUTHOR("Azael Avalos");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) MODULE_DESCRIPTION("Toshiba WMI Hotkey Driver");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) MODULE_LICENSE("GPL");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) #define WMI_EVENT_GUID "59142400-C6A3-40FA-BADB-8A2652834100"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) MODULE_ALIAS("wmi:"WMI_EVENT_GUID);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) static struct input_dev *toshiba_wmi_input_dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) static const struct key_entry toshiba_wmi_keymap[] __initconst = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) /* TODO: Add keymap values once found... */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) /*{ KE_KEY, 0x00, { KEY_ } },*/
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) { KE_END, 0 }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) static void toshiba_wmi_notify(u32 value, void *context)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) struct acpi_buffer response = { ACPI_ALLOCATE_BUFFER, NULL };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) union acpi_object *obj;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) acpi_status status;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) status = wmi_get_event_data(value, &response);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) if (ACPI_FAILURE(status)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) pr_err("Bad event status 0x%x\n", status);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) obj = (union acpi_object *)response.pointer;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) if (!obj)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) /* TODO: Add proper checks once we have data */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) pr_debug("Unknown event received, obj type %x\n", obj->type);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) kfree(response.pointer);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) static const struct dmi_system_id toshiba_wmi_dmi_table[] __initconst = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) .ident = "Toshiba laptop",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) .matches = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) {}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) static int __init toshiba_wmi_input_setup(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) acpi_status status;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) int err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) toshiba_wmi_input_dev = input_allocate_device();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) if (!toshiba_wmi_input_dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) toshiba_wmi_input_dev->name = "Toshiba WMI hotkeys";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) toshiba_wmi_input_dev->phys = "wmi/input0";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) toshiba_wmi_input_dev->id.bustype = BUS_HOST;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) err = sparse_keymap_setup(toshiba_wmi_input_dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) toshiba_wmi_keymap, NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) if (err)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83) goto err_free_dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) status = wmi_install_notify_handler(WMI_EVENT_GUID,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86) toshiba_wmi_notify, NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) if (ACPI_FAILURE(status)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88) err = -EIO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89) goto err_free_dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92) err = input_register_device(toshiba_wmi_input_dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93) if (err)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94) goto err_remove_notifier;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98) err_remove_notifier:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99) wmi_remove_notify_handler(WMI_EVENT_GUID);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) err_free_dev:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) input_free_device(toshiba_wmi_input_dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) static void toshiba_wmi_input_destroy(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) wmi_remove_notify_handler(WMI_EVENT_GUID);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) input_unregister_device(toshiba_wmi_input_dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) static int __init toshiba_wmi_init(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) if (!wmi_has_guid(WMI_EVENT_GUID) ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) !dmi_check_system(toshiba_wmi_dmi_table))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) return -ENODEV;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) ret = toshiba_wmi_input_setup();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) if (ret) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) pr_err("Failed to setup input device\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) pr_info("Toshiba WMI Hotkey Driver\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) static void __exit toshiba_wmi_exit(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) if (wmi_has_guid(WMI_EVENT_GUID))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) toshiba_wmi_input_destroy();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) module_init(toshiba_wmi_init);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) module_exit(toshiba_wmi_exit);
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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