Thomas Gleixner | 1a59d1b8 | 2019-05-27 08:55:05 +0200 | [diff] [blame] | 1 | // SPDX-License-Identifier: GPL-2.0-or-later |
Thomas Renninger | d12d8ba | 2009-12-10 14:18:13 +0100 | [diff] [blame] | 2 | /* |
| 3 | * MSI WMI hotkeys |
| 4 | * |
| 5 | * Copyright (C) 2009 Novell <trenn@suse.de> |
| 6 | * |
| 7 | * Most stuff taken over from hp-wmi |
Thomas Renninger | d12d8ba | 2009-12-10 14:18:13 +0100 | [diff] [blame] | 8 | */ |
| 9 | |
Joe Perches | dd3c7f23 | 2011-03-29 15:21:47 -0700 | [diff] [blame] | 10 | #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt |
Thomas Renninger | d12d8ba | 2009-12-10 14:18:13 +0100 | [diff] [blame] | 11 | |
Thomas Renninger | d12d8ba | 2009-12-10 14:18:13 +0100 | [diff] [blame] | 12 | #include <linux/kernel.h> |
Thomas Renninger | d12d8ba | 2009-12-10 14:18:13 +0100 | [diff] [blame] | 13 | #include <linux/input.h> |
Anisse Astier | c30116c | 2009-12-10 14:18:19 +0100 | [diff] [blame] | 14 | #include <linux/input/sparse-keymap.h> |
Thomas Renninger | d12d8ba | 2009-12-10 14:18:13 +0100 | [diff] [blame] | 15 | #include <linux/acpi.h> |
Thomas Renninger | d12d8ba | 2009-12-10 14:18:13 +0100 | [diff] [blame] | 16 | #include <linux/backlight.h> |
Tejun Heo | 5a0e3ad | 2010-03-24 17:04:11 +0900 | [diff] [blame] | 17 | #include <linux/slab.h> |
Paul Gortmaker | 7c52d55 | 2011-05-27 12:33:10 -0400 | [diff] [blame] | 18 | #include <linux/module.h> |
Hans de Goede | 33a4edf | 2015-06-16 16:28:07 +0200 | [diff] [blame] | 19 | #include <acpi/video.h> |
Thomas Renninger | d12d8ba | 2009-12-10 14:18:13 +0100 | [diff] [blame] | 20 | |
| 21 | MODULE_AUTHOR("Thomas Renninger <trenn@suse.de>"); |
| 22 | MODULE_DESCRIPTION("MSI laptop WMI hotkeys driver"); |
| 23 | MODULE_LICENSE("GPL"); |
| 24 | |
Thomas Renninger | d12d8ba | 2009-12-10 14:18:13 +0100 | [diff] [blame] | 25 | #define DRV_NAME "msi-wmi" |
Thomas Renninger | d12d8ba | 2009-12-10 14:18:13 +0100 | [diff] [blame] | 26 | |
| 27 | #define MSIWMI_BIOS_GUID "551A1F84-FBDD-4125-91DB-3EA8F44F1D45" |
Maxim Mikityanskiy | c11ac2a | 2012-12-15 19:31:36 +0200 | [diff] [blame] | 28 | #define MSIWMI_MSI_EVENT_GUID "B6F3EEF2-3D2F-49DC-9DE3-85BCE18C62F2" |
| 29 | #define MSIWMI_WIND_EVENT_GUID "5B3CC38A-40D9-7245-8AE6-1145B751BE3F" |
Thomas Renninger | d12d8ba | 2009-12-10 14:18:13 +0100 | [diff] [blame] | 30 | |
Maxim Mikityanskiy | dd2b025 | 2012-12-15 19:31:32 +0200 | [diff] [blame] | 31 | MODULE_ALIAS("wmi:" MSIWMI_BIOS_GUID); |
Maxim Mikityanskiy | c11ac2a | 2012-12-15 19:31:36 +0200 | [diff] [blame] | 32 | MODULE_ALIAS("wmi:" MSIWMI_MSI_EVENT_GUID); |
| 33 | MODULE_ALIAS("wmi:" MSIWMI_WIND_EVENT_GUID); |
Maxim Mikityanskiy | dd2b025 | 2012-12-15 19:31:32 +0200 | [diff] [blame] | 34 | |
Maxim Mikityanskiy | b0d3bb5 | 2012-12-15 19:31:33 +0200 | [diff] [blame] | 35 | enum msi_scancodes { |
Maxim Mikityanskiy | c11ac2a | 2012-12-15 19:31:36 +0200 | [diff] [blame] | 36 | /* Generic MSI keys (not present on MSI Wind) */ |
Maxim Mikityanskiy | fedda8e | 2012-12-15 19:31:35 +0200 | [diff] [blame] | 37 | MSI_KEY_BRIGHTNESSUP = 0xD0, |
Maxim Mikityanskiy | b0d3bb5 | 2012-12-15 19:31:33 +0200 | [diff] [blame] | 38 | MSI_KEY_BRIGHTNESSDOWN, |
| 39 | MSI_KEY_VOLUMEUP, |
| 40 | MSI_KEY_VOLUMEDOWN, |
| 41 | MSI_KEY_MUTE, |
Maxim Mikityanskiy | c11ac2a | 2012-12-15 19:31:36 +0200 | [diff] [blame] | 42 | /* MSI Wind keys */ |
| 43 | WIND_KEY_TOUCHPAD = 0x08, /* Fn+F3 touchpad toggle */ |
| 44 | WIND_KEY_BLUETOOTH = 0x56, /* Fn+F11 Bluetooth toggle */ |
| 45 | WIND_KEY_CAMERA, /* Fn+F6 webcam toggle */ |
| 46 | WIND_KEY_WLAN = 0x5f, /* Fn+F11 Wi-Fi toggle */ |
| 47 | WIND_KEY_TURBO, /* Fn+F10 turbo mode toggle */ |
| 48 | WIND_KEY_ECO = 0x69, /* Fn+F10 ECO mode toggle */ |
Maxim Mikityanskiy | b0d3bb5 | 2012-12-15 19:31:33 +0200 | [diff] [blame] | 49 | }; |
Thomas Renninger | d12d8ba | 2009-12-10 14:18:13 +0100 | [diff] [blame] | 50 | static struct key_entry msi_wmi_keymap[] = { |
Maxim Mikityanskiy | b0d3bb5 | 2012-12-15 19:31:33 +0200 | [diff] [blame] | 51 | { KE_KEY, MSI_KEY_BRIGHTNESSUP, {KEY_BRIGHTNESSUP} }, |
| 52 | { KE_KEY, MSI_KEY_BRIGHTNESSDOWN, {KEY_BRIGHTNESSDOWN} }, |
| 53 | { KE_KEY, MSI_KEY_VOLUMEUP, {KEY_VOLUMEUP} }, |
| 54 | { KE_KEY, MSI_KEY_VOLUMEDOWN, {KEY_VOLUMEDOWN} }, |
| 55 | { KE_KEY, MSI_KEY_MUTE, {KEY_MUTE} }, |
Maxim Mikityanskiy | c11ac2a | 2012-12-15 19:31:36 +0200 | [diff] [blame] | 56 | |
| 57 | /* These keys work without WMI. Ignore them to avoid double keycodes */ |
| 58 | { KE_IGNORE, WIND_KEY_TOUCHPAD, {KEY_TOUCHPAD_TOGGLE} }, |
| 59 | { KE_IGNORE, WIND_KEY_BLUETOOTH, {KEY_BLUETOOTH} }, |
| 60 | { KE_IGNORE, WIND_KEY_CAMERA, {KEY_CAMERA} }, |
| 61 | { KE_IGNORE, WIND_KEY_WLAN, {KEY_WLAN} }, |
| 62 | |
| 63 | /* These are unknown WMI events found on MSI Wind */ |
| 64 | { KE_IGNORE, 0x00 }, |
| 65 | { KE_IGNORE, 0x62 }, |
| 66 | { KE_IGNORE, 0x63 }, |
| 67 | |
| 68 | /* These are MSI Wind keys that should be handled via WMI */ |
| 69 | { KE_KEY, WIND_KEY_TURBO, {KEY_PROG1} }, |
| 70 | { KE_KEY, WIND_KEY_ECO, {KEY_PROG2} }, |
| 71 | |
Maxim Mikityanskiy | b0d3bb5 | 2012-12-15 19:31:33 +0200 | [diff] [blame] | 72 | { KE_END, 0 } |
Thomas Renninger | d12d8ba | 2009-12-10 14:18:13 +0100 | [diff] [blame] | 73 | }; |
Maxim Mikityanskiy | fedda8e | 2012-12-15 19:31:35 +0200 | [diff] [blame] | 74 | |
| 75 | static ktime_t last_pressed; |
Thomas Renninger | d12d8ba | 2009-12-10 14:18:13 +0100 | [diff] [blame] | 76 | |
Maxim Mikityanskiy | c11ac2a | 2012-12-15 19:31:36 +0200 | [diff] [blame] | 77 | static const struct { |
| 78 | const char *guid; |
| 79 | bool quirk_last_pressed; |
| 80 | } *event_wmi, event_wmis[] = { |
| 81 | { MSIWMI_MSI_EVENT_GUID, true }, |
| 82 | { MSIWMI_WIND_EVENT_GUID, false }, |
| 83 | }; |
Maxim Mikityanskiy | da85062 | 2012-12-15 19:31:34 +0200 | [diff] [blame] | 84 | |
Axel Lin | 8700e16 | 2010-07-08 09:50:30 +0800 | [diff] [blame] | 85 | static struct backlight_device *backlight; |
Thomas Renninger | d12d8ba | 2009-12-10 14:18:13 +0100 | [diff] [blame] | 86 | |
| 87 | static int backlight_map[] = { 0x00, 0x33, 0x66, 0x99, 0xCC, 0xFF }; |
| 88 | |
| 89 | static struct input_dev *msi_wmi_input_dev; |
| 90 | |
| 91 | static int msi_wmi_query_block(int instance, int *ret) |
| 92 | { |
| 93 | acpi_status status; |
| 94 | union acpi_object *obj; |
| 95 | |
| 96 | struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, NULL }; |
| 97 | |
| 98 | status = wmi_query_block(MSIWMI_BIOS_GUID, instance, &output); |
Hans de Goede | 2c15644 | 2021-02-04 13:19:31 +0100 | [diff] [blame] | 99 | if (ACPI_FAILURE(status)) |
| 100 | return -EIO; |
Thomas Renninger | d12d8ba | 2009-12-10 14:18:13 +0100 | [diff] [blame] | 101 | |
| 102 | obj = output.pointer; |
| 103 | |
| 104 | if (!obj || obj->type != ACPI_TYPE_INTEGER) { |
| 105 | if (obj) { |
Joe Perches | dd3c7f23 | 2011-03-29 15:21:47 -0700 | [diff] [blame] | 106 | pr_err("query block returned object " |
Thomas Renninger | d12d8ba | 2009-12-10 14:18:13 +0100 | [diff] [blame] | 107 | "type: %d - buffer length:%d\n", obj->type, |
| 108 | obj->type == ACPI_TYPE_BUFFER ? |
| 109 | obj->buffer.length : 0); |
| 110 | } |
| 111 | kfree(obj); |
| 112 | return -EINVAL; |
| 113 | } |
| 114 | *ret = obj->integer.value; |
| 115 | kfree(obj); |
| 116 | return 0; |
| 117 | } |
| 118 | |
| 119 | static int msi_wmi_set_block(int instance, int value) |
| 120 | { |
| 121 | acpi_status status; |
| 122 | |
| 123 | struct acpi_buffer input = { sizeof(int), &value }; |
| 124 | |
Joe Perches | dd3c7f23 | 2011-03-29 15:21:47 -0700 | [diff] [blame] | 125 | pr_debug("Going to set block of instance: %d - value: %d\n", |
| 126 | instance, value); |
Thomas Renninger | d12d8ba | 2009-12-10 14:18:13 +0100 | [diff] [blame] | 127 | |
| 128 | status = wmi_set_block(MSIWMI_BIOS_GUID, instance, &input); |
| 129 | |
| 130 | return ACPI_SUCCESS(status) ? 0 : 1; |
| 131 | } |
| 132 | |
| 133 | static int bl_get(struct backlight_device *bd) |
| 134 | { |
Anisse Astier | de078e5 | 2009-12-14 10:21:39 +0100 | [diff] [blame] | 135 | int level, err, ret; |
Thomas Renninger | d12d8ba | 2009-12-10 14:18:13 +0100 | [diff] [blame] | 136 | |
| 137 | /* Instance 1 is "get backlight", cmp with DSDT */ |
| 138 | err = msi_wmi_query_block(1, &ret); |
Anisse Astier | de078e5 | 2009-12-14 10:21:39 +0100 | [diff] [blame] | 139 | if (err) { |
Joe Perches | dd3c7f23 | 2011-03-29 15:21:47 -0700 | [diff] [blame] | 140 | pr_err("Could not query backlight: %d\n", err); |
Anisse Astier | de078e5 | 2009-12-14 10:21:39 +0100 | [diff] [blame] | 141 | return -EINVAL; |
| 142 | } |
Joe Perches | dd3c7f23 | 2011-03-29 15:21:47 -0700 | [diff] [blame] | 143 | pr_debug("Get: Query block returned: %d\n", ret); |
Thomas Renninger | d12d8ba | 2009-12-10 14:18:13 +0100 | [diff] [blame] | 144 | for (level = 0; level < ARRAY_SIZE(backlight_map); level++) { |
| 145 | if (backlight_map[level] == ret) { |
Joe Perches | dd3c7f23 | 2011-03-29 15:21:47 -0700 | [diff] [blame] | 146 | pr_debug("Current backlight level: 0x%X - index: %d\n", |
| 147 | backlight_map[level], level); |
Thomas Renninger | d12d8ba | 2009-12-10 14:18:13 +0100 | [diff] [blame] | 148 | break; |
| 149 | } |
| 150 | } |
| 151 | if (level == ARRAY_SIZE(backlight_map)) { |
Joe Perches | dd3c7f23 | 2011-03-29 15:21:47 -0700 | [diff] [blame] | 152 | pr_err("get: Invalid brightness value: 0x%X\n", ret); |
Thomas Renninger | d12d8ba | 2009-12-10 14:18:13 +0100 | [diff] [blame] | 153 | return -EINVAL; |
| 154 | } |
| 155 | return level; |
| 156 | } |
| 157 | |
| 158 | static int bl_set_status(struct backlight_device *bd) |
| 159 | { |
| 160 | int bright = bd->props.brightness; |
| 161 | if (bright >= ARRAY_SIZE(backlight_map) || bright < 0) |
| 162 | return -EINVAL; |
| 163 | |
| 164 | /* Instance 0 is "set backlight" */ |
| 165 | return msi_wmi_set_block(0, backlight_map[bright]); |
| 166 | } |
| 167 | |
Bruno Prémont | 28d8587 | 2010-02-26 13:17:16 +0100 | [diff] [blame] | 168 | static const struct backlight_ops msi_backlight_ops = { |
Thomas Renninger | d12d8ba | 2009-12-10 14:18:13 +0100 | [diff] [blame] | 169 | .get_brightness = bl_get, |
| 170 | .update_status = bl_set_status, |
| 171 | }; |
| 172 | |
Thomas Renninger | d12d8ba | 2009-12-10 14:18:13 +0100 | [diff] [blame] | 173 | static void msi_wmi_notify(u32 value, void *context) |
| 174 | { |
| 175 | struct acpi_buffer response = { ACPI_ALLOCATE_BUFFER, NULL }; |
Gustavo A. R. Silva | 6d8d556 | 2017-07-18 16:49:37 -0500 | [diff] [blame] | 176 | struct key_entry *key; |
Thomas Renninger | d12d8ba | 2009-12-10 14:18:13 +0100 | [diff] [blame] | 177 | union acpi_object *obj; |
Len Brown | fda11e6 | 2009-12-26 23:02:24 -0500 | [diff] [blame] | 178 | acpi_status status; |
Thomas Renninger | d12d8ba | 2009-12-10 14:18:13 +0100 | [diff] [blame] | 179 | |
Len Brown | fda11e6 | 2009-12-26 23:02:24 -0500 | [diff] [blame] | 180 | status = wmi_get_event_data(value, &response); |
| 181 | if (status != AE_OK) { |
Joe Perches | dd3c7f23 | 2011-03-29 15:21:47 -0700 | [diff] [blame] | 182 | pr_info("bad event status 0x%x\n", status); |
Len Brown | fda11e6 | 2009-12-26 23:02:24 -0500 | [diff] [blame] | 183 | return; |
| 184 | } |
Thomas Renninger | d12d8ba | 2009-12-10 14:18:13 +0100 | [diff] [blame] | 185 | |
| 186 | obj = (union acpi_object *)response.pointer; |
| 187 | |
| 188 | if (obj && obj->type == ACPI_TYPE_INTEGER) { |
| 189 | int eventcode = obj->integer.value; |
Joe Perches | dd3c7f23 | 2011-03-29 15:21:47 -0700 | [diff] [blame] | 190 | pr_debug("Eventcode: 0x%x\n", eventcode); |
Anisse Astier | c30116c | 2009-12-10 14:18:19 +0100 | [diff] [blame] | 191 | key = sparse_keymap_entry_from_scancode(msi_wmi_input_dev, |
| 192 | eventcode); |
Maxim Mikityanskiy | fedda8e | 2012-12-15 19:31:35 +0200 | [diff] [blame] | 193 | if (!key) { |
| 194 | pr_info("Unknown key pressed - %x\n", eventcode); |
| 195 | goto msi_wmi_notify_exit; |
| 196 | } |
| 197 | |
Maxim Mikityanskiy | c11ac2a | 2012-12-15 19:31:36 +0200 | [diff] [blame] | 198 | if (event_wmi->quirk_last_pressed) { |
Maxim Mikityanskiy | fedda8e | 2012-12-15 19:31:35 +0200 | [diff] [blame] | 199 | ktime_t cur = ktime_get_real(); |
| 200 | ktime_t diff = ktime_sub(cur, last_pressed); |
| 201 | /* Ignore event if any event happened in a 50 ms |
Thomas Renninger | d12d8ba | 2009-12-10 14:18:13 +0100 | [diff] [blame] | 202 | timeframe -> Key press may result in 10-20 GPEs */ |
Anisse Astier | c30116c | 2009-12-10 14:18:19 +0100 | [diff] [blame] | 203 | if (ktime_to_us(diff) < 1000 * 50) { |
Joe Perches | dd3c7f23 | 2011-03-29 15:21:47 -0700 | [diff] [blame] | 204 | pr_debug("Suppressed key event 0x%X - " |
| 205 | "Last press was %lld us ago\n", |
Anisse Astier | c30116c | 2009-12-10 14:18:19 +0100 | [diff] [blame] | 206 | key->code, ktime_to_us(diff)); |
Maxim Mikityanskiy | 51c9449 | 2012-12-15 19:31:31 +0200 | [diff] [blame] | 207 | goto msi_wmi_notify_exit; |
Thomas Renninger | d12d8ba | 2009-12-10 14:18:13 +0100 | [diff] [blame] | 208 | } |
Maxim Mikityanskiy | fedda8e | 2012-12-15 19:31:35 +0200 | [diff] [blame] | 209 | last_pressed = cur; |
| 210 | } |
Thomas Renninger | d12d8ba | 2009-12-10 14:18:13 +0100 | [diff] [blame] | 211 | |
Maxim Mikityanskiy | fedda8e | 2012-12-15 19:31:35 +0200 | [diff] [blame] | 212 | if (key->type == KE_KEY && |
| 213 | /* Brightness is served via acpi video driver */ |
| 214 | (backlight || |
| 215 | (key->code != MSI_KEY_BRIGHTNESSUP && |
| 216 | key->code != MSI_KEY_BRIGHTNESSDOWN))) { |
| 217 | pr_debug("Send key: 0x%X - Input layer keycode: %d\n", |
| 218 | key->code, key->keycode); |
| 219 | sparse_keymap_report_entry(msi_wmi_input_dev, key, 1, |
| 220 | true); |
| 221 | } |
Thomas Renninger | d12d8ba | 2009-12-10 14:18:13 +0100 | [diff] [blame] | 222 | } else |
Joe Perches | dd3c7f23 | 2011-03-29 15:21:47 -0700 | [diff] [blame] | 223 | pr_info("Unknown event received\n"); |
Maxim Mikityanskiy | 51c9449 | 2012-12-15 19:31:31 +0200 | [diff] [blame] | 224 | |
| 225 | msi_wmi_notify_exit: |
Thomas Renninger | d12d8ba | 2009-12-10 14:18:13 +0100 | [diff] [blame] | 226 | kfree(response.pointer); |
| 227 | } |
| 228 | |
Maxim Mikityanskiy | da85062 | 2012-12-15 19:31:34 +0200 | [diff] [blame] | 229 | static int __init msi_wmi_backlight_setup(void) |
| 230 | { |
| 231 | int err; |
| 232 | struct backlight_properties props; |
| 233 | |
| 234 | memset(&props, 0, sizeof(struct backlight_properties)); |
| 235 | props.type = BACKLIGHT_PLATFORM; |
| 236 | props.max_brightness = ARRAY_SIZE(backlight_map) - 1; |
| 237 | backlight = backlight_device_register(DRV_NAME, NULL, NULL, |
| 238 | &msi_backlight_ops, |
| 239 | &props); |
| 240 | if (IS_ERR(backlight)) |
| 241 | return PTR_ERR(backlight); |
| 242 | |
| 243 | err = bl_get(NULL); |
| 244 | if (err < 0) { |
| 245 | backlight_device_unregister(backlight); |
| 246 | return err; |
| 247 | } |
| 248 | |
| 249 | backlight->props.brightness = err; |
| 250 | |
| 251 | return 0; |
| 252 | } |
| 253 | |
Thomas Renninger | d12d8ba | 2009-12-10 14:18:13 +0100 | [diff] [blame] | 254 | static int __init msi_wmi_input_setup(void) |
| 255 | { |
Thomas Renninger | d12d8ba | 2009-12-10 14:18:13 +0100 | [diff] [blame] | 256 | int err; |
| 257 | |
| 258 | msi_wmi_input_dev = input_allocate_device(); |
Anisse Astier | 46b51eb | 2009-12-10 14:18:15 +0100 | [diff] [blame] | 259 | if (!msi_wmi_input_dev) |
| 260 | return -ENOMEM; |
Thomas Renninger | d12d8ba | 2009-12-10 14:18:13 +0100 | [diff] [blame] | 261 | |
| 262 | msi_wmi_input_dev->name = "MSI WMI hotkeys"; |
| 263 | msi_wmi_input_dev->phys = "wmi/input0"; |
| 264 | msi_wmi_input_dev->id.bustype = BUS_HOST; |
Thomas Renninger | d12d8ba | 2009-12-10 14:18:13 +0100 | [diff] [blame] | 265 | |
Anisse Astier | c30116c | 2009-12-10 14:18:19 +0100 | [diff] [blame] | 266 | err = sparse_keymap_setup(msi_wmi_input_dev, msi_wmi_keymap, NULL); |
| 267 | if (err) |
| 268 | goto err_free_dev; |
Thomas Renninger | d12d8ba | 2009-12-10 14:18:13 +0100 | [diff] [blame] | 269 | |
| 270 | err = input_register_device(msi_wmi_input_dev); |
| 271 | |
Anisse Astier | c30116c | 2009-12-10 14:18:19 +0100 | [diff] [blame] | 272 | if (err) |
Michał Kępień | 0788e33 | 2017-03-09 13:11:46 +0100 | [diff] [blame] | 273 | goto err_free_dev; |
Anisse Astier | c30116c | 2009-12-10 14:18:19 +0100 | [diff] [blame] | 274 | |
Thomas Gleixner | 8b0e195 | 2016-12-25 12:30:41 +0100 | [diff] [blame] | 275 | last_pressed = 0; |
Thomas Renninger | d12d8ba | 2009-12-10 14:18:13 +0100 | [diff] [blame] | 276 | |
| 277 | return 0; |
Anisse Astier | c30116c | 2009-12-10 14:18:19 +0100 | [diff] [blame] | 278 | |
Anisse Astier | c30116c | 2009-12-10 14:18:19 +0100 | [diff] [blame] | 279 | err_free_dev: |
| 280 | input_free_device(msi_wmi_input_dev); |
| 281 | return err; |
Thomas Renninger | d12d8ba | 2009-12-10 14:18:13 +0100 | [diff] [blame] | 282 | } |
| 283 | |
| 284 | static int __init msi_wmi_init(void) |
| 285 | { |
| 286 | int err; |
Maxim Mikityanskiy | c11ac2a | 2012-12-15 19:31:36 +0200 | [diff] [blame] | 287 | int i; |
Thomas Renninger | d12d8ba | 2009-12-10 14:18:13 +0100 | [diff] [blame] | 288 | |
Maxim Mikityanskiy | c11ac2a | 2012-12-15 19:31:36 +0200 | [diff] [blame] | 289 | for (i = 0; i < ARRAY_SIZE(event_wmis); i++) { |
| 290 | if (!wmi_has_guid(event_wmis[i].guid)) |
| 291 | continue; |
| 292 | |
Maxim Mikityanskiy | da85062 | 2012-12-15 19:31:34 +0200 | [diff] [blame] | 293 | err = msi_wmi_input_setup(); |
| 294 | if (err) { |
| 295 | pr_err("Unable to setup input device\n"); |
| 296 | return err; |
| 297 | } |
| 298 | |
Maxim Mikityanskiy | c11ac2a | 2012-12-15 19:31:36 +0200 | [diff] [blame] | 299 | err = wmi_install_notify_handler(event_wmis[i].guid, |
Anisse Astier | 46b51eb | 2009-12-10 14:18:15 +0100 | [diff] [blame] | 300 | msi_wmi_notify, NULL); |
Maxim Mikityanskiy | da85062 | 2012-12-15 19:31:34 +0200 | [diff] [blame] | 301 | if (ACPI_FAILURE(err)) { |
| 302 | pr_err("Unable to setup WMI notify handler\n"); |
Anisse Astier | 46b51eb | 2009-12-10 14:18:15 +0100 | [diff] [blame] | 303 | goto err_free_input; |
Bruno Prémont | 28d8587 | 2010-02-26 13:17:16 +0100 | [diff] [blame] | 304 | } |
Thomas Renninger | d12d8ba | 2009-12-10 14:18:13 +0100 | [diff] [blame] | 305 | |
Maxim Mikityanskiy | da85062 | 2012-12-15 19:31:34 +0200 | [diff] [blame] | 306 | pr_debug("Event handler installed\n"); |
Maxim Mikityanskiy | c11ac2a | 2012-12-15 19:31:36 +0200 | [diff] [blame] | 307 | event_wmi = &event_wmis[i]; |
| 308 | break; |
Thomas Renninger | d12d8ba | 2009-12-10 14:18:13 +0100 | [diff] [blame] | 309 | } |
Maxim Mikityanskiy | da85062 | 2012-12-15 19:31:34 +0200 | [diff] [blame] | 310 | |
Hans de Goede | 33a4edf | 2015-06-16 16:28:07 +0200 | [diff] [blame] | 311 | if (wmi_has_guid(MSIWMI_BIOS_GUID) && |
| 312 | acpi_video_get_backlight_type() == acpi_backlight_vendor) { |
Maxim Mikityanskiy | da85062 | 2012-12-15 19:31:34 +0200 | [diff] [blame] | 313 | err = msi_wmi_backlight_setup(); |
| 314 | if (err) { |
| 315 | pr_err("Unable to setup backlight device\n"); |
| 316 | goto err_uninstall_handler; |
| 317 | } |
| 318 | pr_debug("Backlight device created\n"); |
| 319 | } |
| 320 | |
Maxim Mikityanskiy | c11ac2a | 2012-12-15 19:31:36 +0200 | [diff] [blame] | 321 | if (!event_wmi && !backlight) { |
Maxim Mikityanskiy | da85062 | 2012-12-15 19:31:34 +0200 | [diff] [blame] | 322 | pr_err("This machine doesn't have neither MSI-hotkeys nor backlight through WMI\n"); |
| 323 | return -ENODEV; |
| 324 | } |
Anisse Astier | 46b51eb | 2009-12-10 14:18:15 +0100 | [diff] [blame] | 325 | |
Thomas Renninger | d12d8ba | 2009-12-10 14:18:13 +0100 | [diff] [blame] | 326 | return 0; |
Anisse Astier | 46b51eb | 2009-12-10 14:18:15 +0100 | [diff] [blame] | 327 | |
Maxim Mikityanskiy | da85062 | 2012-12-15 19:31:34 +0200 | [diff] [blame] | 328 | err_uninstall_handler: |
Maxim Mikityanskiy | c11ac2a | 2012-12-15 19:31:36 +0200 | [diff] [blame] | 329 | if (event_wmi) |
| 330 | wmi_remove_notify_handler(event_wmi->guid); |
Anisse Astier | 46b51eb | 2009-12-10 14:18:15 +0100 | [diff] [blame] | 331 | err_free_input: |
Michał Kępień | 0788e33 | 2017-03-09 13:11:46 +0100 | [diff] [blame] | 332 | if (event_wmi) |
Maxim Mikityanskiy | da85062 | 2012-12-15 19:31:34 +0200 | [diff] [blame] | 333 | input_unregister_device(msi_wmi_input_dev); |
Anisse Astier | 46b51eb | 2009-12-10 14:18:15 +0100 | [diff] [blame] | 334 | return err; |
Thomas Renninger | d12d8ba | 2009-12-10 14:18:13 +0100 | [diff] [blame] | 335 | } |
| 336 | |
| 337 | static void __exit msi_wmi_exit(void) |
| 338 | { |
Maxim Mikityanskiy | c11ac2a | 2012-12-15 19:31:36 +0200 | [diff] [blame] | 339 | if (event_wmi) { |
| 340 | wmi_remove_notify_handler(event_wmi->guid); |
Thomas Renninger | d12d8ba | 2009-12-10 14:18:13 +0100 | [diff] [blame] | 341 | input_unregister_device(msi_wmi_input_dev); |
Thomas Renninger | d12d8ba | 2009-12-10 14:18:13 +0100 | [diff] [blame] | 342 | } |
Markus Elfring | 0098181 | 2014-11-24 20:30:29 +0100 | [diff] [blame] | 343 | backlight_device_unregister(backlight); |
Thomas Renninger | d12d8ba | 2009-12-10 14:18:13 +0100 | [diff] [blame] | 344 | } |
| 345 | |
| 346 | module_init(msi_wmi_init); |
| 347 | module_exit(msi_wmi_exit); |