| Author | Tokens | Token Proportion | Commits | Commit Proportion |
|---|---|---|---|---|
| Pali Rohár | 771 | 28.68% | 9 | 18.75% |
| Andrew Lutomirski | 753 | 28.01% | 10 | 20.83% |
| Mario Limonciello | 250 | 9.30% | 6 | 12.50% |
| Michał Kępień | 230 | 8.56% | 4 | 8.33% |
| Rezwanul Kabir | 179 | 6.66% | 1 | 2.08% |
| Matthew Garrett | 161 | 5.99% | 1 | 2.08% |
| Dmitry Torokhov | 142 | 5.28% | 2 | 4.17% |
| Seth Forshee | 53 | 1.97% | 1 | 2.08% |
| Kai-Heng Feng | 45 | 1.67% | 1 | 2.08% |
| Gabriele Mazzotta | 32 | 1.19% | 1 | 2.08% |
| Hans de Goede | 20 | 0.74% | 3 | 6.25% |
| Alex Hung | 18 | 0.67% | 2 | 4.17% |
| Shih-Yuan Lee (FourDollars) | 11 | 0.41% | 1 | 2.08% |
| Dan Carpenter | 9 | 0.33% | 1 | 2.08% |
| Joe Perches | 8 | 0.30% | 1 | 2.08% |
| Tejun Heo | 3 | 0.11% | 1 | 2.08% |
| Axel Lin | 1 | 0.04% | 1 | 2.08% |
| Darren Hart | 1 | 0.04% | 1 | 2.08% |
| Henk Vergonet | 1 | 0.04% | 1 | 2.08% |
| Total | 2688 | 48 |
/* * Dell WMI hotkeys * * Copyright (C) 2008 Red Hat <mjg@redhat.com> * Copyright (C) 2014-2015 Pali Rohár <pali.rohar@gmail.com> * * 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> * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2 of the License, or * (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */ #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/acpi.h> #include <linux/string.h> #include <linux/dmi.h> #include <linux/wmi.h> #include <acpi/video.h> #include "dell-smbios.h" #include "dell-wmi-descriptor.h" MODULE_AUTHOR("Matthew Garrett <mjg@redhat.com>"); MODULE_AUTHOR("Pali Rohár <pali.rohar@gmail.com>"); MODULE_DESCRIPTION("Dell laptop WMI hotkeys driver"); MODULE_LICENSE("GPL"); #define DELL_EVENT_GUID "9DBB5994-A997-11DA-B012-B622A1EF5492" static bool wmi_requires_smbios_request; MODULE_ALIAS("wmi:"DELL_EVENT_GUID); struct dell_wmi_priv { struct input_dev *input_dev; u32 interface_version; }; static int __init dmi_matched(const struct dmi_system_id *dmi) { wmi_requires_smbios_request = 1; return 1; } static const struct dmi_system_id dell_wmi_smbios_list[] __initconst = { { .callback = dmi_matched, .ident = "Dell Inspiron M5110", .matches = { DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."), DMI_MATCH(DMI_PRODUCT_NAME, "Inspiron M5110"), }, }, { .callback = dmi_matched, .ident = "Dell Vostro V131", .matches = { DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."), DMI_MATCH(DMI_PRODUCT_NAME, "Vostro V131"), }, }, { } }; /* * Keymap for WMI events of type 0x0000 * * Certain keys are flagged as KE_IGNORE. All of these are either * notifications (rather than requests for change) or are also sent * via the keyboard controller so should not be sent again. */ static const struct key_entry dell_wmi_keymap_type_0000[] = { { KE_IGNORE, 0x003a, { KEY_CAPSLOCK } }, /* Key code is followed by brightness level */ { KE_KEY, 0xe005, { KEY_BRIGHTNESSDOWN } }, { KE_KEY, 0xe006, { KEY_BRIGHTNESSUP } }, /* Battery health status button */ { KE_KEY, 0xe007, { KEY_BATTERY } }, /* Radio devices state change, key code is followed by other values */ { KE_IGNORE, 0xe008, { KEY_RFKILL } }, { KE_KEY, 0xe009, { KEY_EJECTCD } }, /* Key code is followed by: next, active and attached devices */ { KE_KEY, 0xe00b, { KEY_SWITCHVIDEOMODE } }, /* Key code is followed by keyboard illumination level */ { KE_IGNORE, 0xe00c, { KEY_KBDILLUMTOGGLE } }, /* BIOS error detected */ { KE_IGNORE, 0xe00d, { KEY_RESERVED } }, /* Battery was removed or inserted */ { KE_IGNORE, 0xe00e, { KEY_RESERVED } }, /* Wifi Catcher */ { KE_KEY, 0xe011, { KEY_WLAN } }, /* Ambient light sensor toggle */ { KE_IGNORE, 0xe013, { KEY_RESERVED } }, { KE_IGNORE, 0xe020, { KEY_MUTE } }, /* Unknown, defined in ACPI DSDT */ /* { KE_IGNORE, 0xe023, { KEY_RESERVED } }, */ /* Untested, Dell Instant Launch key on Inspiron 7520 */ /* { KE_IGNORE, 0xe024, { KEY_RESERVED } }, */ /* Dell Instant Launch key */ { KE_KEY, 0xe025, { KEY_PROG4 } }, /* Audio panel key */ { KE_IGNORE, 0xe026, { KEY_RESERVED } }, /* LCD Display On/Off Control key */ { KE_KEY, 0xe027, { KEY_DISPLAYTOGGLE } }, /* Untested, Multimedia key on Dell Vostro 3560 */ /* { KE_IGNORE, 0xe028, { KEY_RESERVED } }, */ /* Dell Instant Launch key */ { KE_KEY, 0xe029, { KEY_PROG4 } }, /* Untested, Windows Mobility Center button on Inspiron 7520 */ /* { KE_IGNORE, 0xe02a, { KEY_RESERVED } }, */ /* Unknown, defined in ACPI DSDT */ /* { KE_IGNORE, 0xe02b, { KEY_RESERVED } }, */ /* Untested, Dell Audio With Preset Switch button on Inspiron 7520 */ /* { KE_IGNORE, 0xe02c, { KEY_RESERVED } }, */ { KE_IGNORE, 0xe02e, { KEY_VOLUMEDOWN } }, { KE_IGNORE, 0xe030, { KEY_VOLUMEUP } }, { KE_IGNORE, 0xe033, { KEY_KBDILLUMUP } }, { KE_IGNORE, 0xe034, { KEY_KBDILLUMDOWN } }, { KE_IGNORE, 0xe03a, { KEY_CAPSLOCK } }, /* NIC Link is Up */ { KE_IGNORE, 0xe043, { KEY_RESERVED } }, /* NIC Link is Down */ { KE_IGNORE, 0xe044, { KEY_RESERVED } }, /* * This entry is very suspicious! * Originally Matthew Garrett created this dell-wmi driver specially for * "button with a picture of a battery" which has event code 0xe045. * Later Mario Limonciello from Dell told us that event code 0xe045 is * reported by Num Lock and should be ignored because key is send also * by keyboard controller. * So for now we will ignore this event to prevent potential double * Num Lock key press. */ { KE_IGNORE, 0xe045, { KEY_NUMLOCK } }, /* Scroll lock and also going to tablet mode on portable devices */ { KE_IGNORE, 0xe046, { KEY_SCROLLLOCK } }, /* Untested, going from tablet mode on portable devices */ /* { KE_IGNORE, 0xe047, { KEY_RESERVED } }, */ /* Dell Support Center key */ { KE_IGNORE, 0xe06e, { KEY_RESERVED } }, { KE_IGNORE, 0xe0f7, { KEY_MUTE } }, { KE_IGNORE, 0xe0f8, { KEY_VOLUMEDOWN } }, { KE_IGNORE, 0xe0f9, { KEY_VOLUMEUP } }, }; struct dell_bios_keymap_entry { u16 scancode; u16 keycode; }; struct dell_bios_hotkey_table { struct dmi_header header; struct dell_bios_keymap_entry keymap[]; }; struct dell_dmi_results { int err; int keymap_size; struct key_entry *keymap; }; /* Uninitialized entries here are KEY_RESERVED == 0. */ static const u16 bios_to_linux_keycode[256] = { [0] = KEY_MEDIA, [1] = KEY_NEXTSONG, [2] = KEY_PLAYPAUSE, [3] = KEY_PREVIOUSSONG, [4] = KEY_STOPCD, [5] = KEY_UNKNOWN, [6] = KEY_UNKNOWN, [7] = KEY_UNKNOWN, [8] = KEY_WWW, [9] = KEY_UNKNOWN, [10] = KEY_VOLUMEDOWN, [11] = KEY_MUTE, [12] = KEY_VOLUMEUP, [13] = KEY_UNKNOWN, [14] = KEY_BATTERY, [15] = KEY_EJECTCD, [16] = KEY_UNKNOWN, [17] = KEY_SLEEP, [18] = KEY_PROG1, [19] = KEY_BRIGHTNESSDOWN, [20] = KEY_BRIGHTNESSUP, [21] = KEY_BRIGHTNESS_AUTO, [22] = KEY_KBDILLUMTOGGLE, [23] = KEY_UNKNOWN, [24] = KEY_SWITCHVIDEOMODE, [25] = KEY_UNKNOWN, [26] = KEY_UNKNOWN, [27] = KEY_SWITCHVIDEOMODE, [28] = KEY_UNKNOWN, [29] = KEY_UNKNOWN, [30] = KEY_PROG2, [31] = KEY_UNKNOWN, [32] = KEY_UNKNOWN, [33] = KEY_UNKNOWN, [34] = KEY_UNKNOWN, [35] = KEY_UNKNOWN, [36] = KEY_UNKNOWN, [37] = KEY_UNKNOWN, [38] = KEY_MICMUTE, [255] = KEY_PROG3, }; /* * Keymap for WMI events of type 0x0010 * * These are applied if the 0xB2 DMI hotkey table is present and doesn't * override them. */ static const struct key_entry dell_wmi_keymap_type_0010[] = { /* Fn-lock switched to function keys */ { KE_IGNORE, 0x0, { KEY_RESERVED } }, /* Fn-lock switched to multimedia keys */ { KE_IGNORE, 0x1, { KEY_RESERVED } }, /* Mic mute */ { KE_KEY, 0x150, { KEY_MICMUTE } }, /* Fn-lock */ { KE_IGNORE, 0x151, { KEY_RESERVED } }, /* Change keyboard illumination */ { KE_IGNORE, 0x152, { KEY_KBDILLUMTOGGLE } }, /* * Radio disable (notify only -- there is no model for which the * WMI event is supposed to trigger an action). */ { KE_IGNORE, 0x153, { KEY_RFKILL } }, /* RGB keyboard backlight control */ { KE_IGNORE, 0x154, { KEY_RESERVED } }, /* * Stealth mode toggle. This will "disable all lights and sounds". * The action is performed by the BIOS and EC; the WMI event is just * a notification. On the XPS 13 9350, this is Fn+F7, and there's * a BIOS setting to enable and disable the hotkey. */ { KE_IGNORE, 0x155, { KEY_RESERVED } }, /* Rugged magnetic dock attach/detach events */ { KE_IGNORE, 0x156, { KEY_RESERVED } }, { KE_IGNORE, 0x157, { KEY_RESERVED } }, /* Rugged programmable (P1/P2/P3 keys) */ { KE_KEY, 0x850, { KEY_PROG1 } }, { KE_KEY, 0x851, { KEY_PROG2 } }, { KE_KEY, 0x852, { KEY_PROG3 } }, /* * Radio disable (notify only -- there is no model for which the * WMI event is supposed to trigger an action). */ { KE_IGNORE, 0xe008, { KEY_RFKILL } }, /* Fn-lock */ { KE_IGNORE, 0xe035, { KEY_RESERVED } }, }; /* * Keymap for WMI events of type 0x0011 */ static const struct key_entry dell_wmi_keymap_type_0011[] = { /* Battery unplugged */ { KE_IGNORE, 0xfff0, { KEY_RESERVED } }, /* Battery inserted */ { KE_IGNORE, 0xfff1, { KEY_RESERVED } }, /* Keyboard backlight level changed */ { KE_IGNORE, 0x01e1, { KEY_RESERVED } }, { KE_IGNORE, 0x02ea, { KEY_RESERVED } }, { KE_IGNORE, 0x02eb, { KEY_RESERVED } }, { KE_IGNORE, 0x02ec, { KEY_RESERVED } }, { KE_IGNORE, 0x02f6, { KEY_RESERVED } }, }; static void dell_wmi_process_key(struct wmi_device *wdev, int type, int code) { struct dell_wmi_priv *priv = dev_get_drvdata(&wdev->dev); const struct key_entry *key; key = sparse_keymap_entry_from_scancode(priv->input_dev, (type << 16) | code); if (!key) { pr_info("Unknown key with type 0x%04x and code 0x%04x pressed\n", type, code); return; } pr_debug("Key with type 0x%04x and code 0x%04x pressed\n", type, code); /* Don't report brightness notifications that will also come via ACPI */ if ((key->keycode == KEY_BRIGHTNESSUP || key->keycode == KEY_BRIGHTNESSDOWN) && acpi_video_handles_brightness_key_presses()) return; if (type == 0x0000 && code == 0xe025 && !wmi_requires_smbios_request) return; if (key->keycode == KEY_KBDILLUMTOGGLE) dell_laptop_call_notifier( DELL_LAPTOP_KBD_BACKLIGHT_BRIGHTNESS_CHANGED, NULL); sparse_keymap_report_entry(priv->input_dev, key, 1, true); } static void dell_wmi_notify(struct wmi_device *wdev, union acpi_object *obj) { struct dell_wmi_priv *priv = dev_get_drvdata(&wdev->dev); u16 *buffer_entry, *buffer_end; acpi_size buffer_size; int len, i; if (obj->type != ACPI_TYPE_BUFFER) { pr_warn("bad response type %x\n", obj->type); return; } pr_debug("Received WMI event (%*ph)\n", obj->buffer.length, obj->buffer.pointer); buffer_entry = (u16 *)obj->buffer.pointer; buffer_size = obj->buffer.length/2; buffer_end = buffer_entry + buffer_size; /* * BIOS/ACPI on devices with WMI interface version 0 does not clear * buffer before filling it. So next time when BIOS/ACPI send WMI event * which is smaller as previous then it contains garbage in buffer from * previous event. * * BIOS/ACPI on devices with WMI interface version 1 clears buffer and * sometimes send more events in buffer at one call. * * So to prevent reading garbage from buffer we will process only first * one event on devices with WMI interface version 0. */ if (priv->interface_version == 0 && buffer_entry < buffer_end) if (buffer_end > buffer_entry + buffer_entry[0] + 1) buffer_end = buffer_entry + buffer_entry[0] + 1; while (buffer_entry < buffer_end) { len = buffer_entry[0]; if (len == 0) break; len++; if (buffer_entry + len > buffer_end) { pr_warn("Invalid length of WMI event\n"); break; } pr_debug("Process buffer (%*ph)\n", len*2, buffer_entry); switch (buffer_entry[1]) { case 0x0000: /* One key pressed or event occurred */ if (len > 2) dell_wmi_process_key(wdev, 0x0000, buffer_entry[2]); /* Other entries could contain additional information */ break; case 0x0010: /* Sequence of keys pressed */ case 0x0011: /* Sequence of events occurred */ for (i = 2; i < len; ++i) dell_wmi_process_key(wdev, buffer_entry[1], buffer_entry[i]); break; default: /* Unknown event */ pr_info("Unknown WMI event type 0x%x\n", (int)buffer_entry[1]); break; } buffer_entry += len; } } static bool have_scancode(u32 scancode, const struct key_entry *keymap, int len) { int i; for (i = 0; i < len; i++) if (keymap[i].code == scancode) return true; return false; } static void handle_dmi_entry(const struct dmi_header *dm, void *opaque) { struct dell_dmi_results *results = opaque; struct dell_bios_hotkey_table *table; int hotkey_num, i, pos = 0; struct key_entry *keymap; if (results->err || results->keymap) return; /* We already found the hotkey table. */ /* The Dell hotkey table is type 0xB2. Scan until we find it. */ if (dm->type != 0xb2) return; table = container_of(dm, struct dell_bios_hotkey_table, header); hotkey_num = (table->header.length - sizeof(struct dell_bios_hotkey_table)) / sizeof(struct dell_bios_keymap_entry); if (hotkey_num < 1) { /* * Historically, dell-wmi would ignore a DMI entry of * fewer than 7 bytes. Sizes between 4 and 8 bytes are * nonsensical (both the header and all entries are 4 * bytes), so we approximate the old behavior by * ignoring tables with fewer than one entry. */ return; } keymap = kcalloc(hotkey_num, sizeof(struct key_entry), GFP_KERNEL); if (!keymap) { results->err = -ENOMEM; return; } for (i = 0; i < hotkey_num; i++) { const struct dell_bios_keymap_entry *bios_entry = &table->keymap[i]; /* Uninitialized entries are 0 aka KEY_RESERVED. */ u16 keycode = (bios_entry->keycode < ARRAY_SIZE(bios_to_linux_keycode)) ? bios_to_linux_keycode[bios_entry->keycode] : KEY_RESERVED; /* * Log if we find an entry in the DMI table that we don't * understand. If this happens, we should figure out what * the entry means and add it to bios_to_linux_keycode. */ if (keycode == KEY_RESERVED) { pr_info("firmware scancode 0x%x maps to unrecognized keycode 0x%x\n", bios_entry->scancode, bios_entry->keycode); continue; } if (keycode == KEY_KBDILLUMTOGGLE) keymap[pos].type = KE_IGNORE; else keymap[pos].type = KE_KEY; keymap[pos].code = bios_entry->scancode; keymap[pos].keycode = keycode; pos++; } results->keymap = keymap; results->keymap_size = pos; } static int dell_wmi_input_setup(struct wmi_device *wdev) { struct dell_wmi_priv *priv = dev_get_drvdata(&wdev->dev); struct dell_dmi_results dmi_results = {}; struct key_entry *keymap; int err, i, pos = 0; priv->input_dev = input_allocate_device(); if (!priv->input_dev) return -ENOMEM; priv->input_dev->name = "Dell WMI hotkeys"; priv->input_dev->id.bustype = BUS_HOST; priv->input_dev->dev.parent = &wdev->dev; if (dmi_walk(handle_dmi_entry, &dmi_results)) { /* * Historically, dell-wmi ignored dmi_walk errors. A failure * is certainly surprising, but it probably just indicates * a very old laptop. */ pr_warn("no DMI; using the old-style hotkey interface\n"); } if (dmi_results.err) { err = dmi_results.err; goto err_free_dev; } keymap = kcalloc(dmi_results.keymap_size + ARRAY_SIZE(dell_wmi_keymap_type_0000) + ARRAY_SIZE(dell_wmi_keymap_type_0010) + ARRAY_SIZE(dell_wmi_keymap_type_0011) + 1, sizeof(struct key_entry), GFP_KERNEL); if (!keymap) { kfree(dmi_results.keymap); err = -ENOMEM; goto err_free_dev; } /* Append table with events of type 0x0010 which comes from DMI */ for (i = 0; i < dmi_results.keymap_size; i++) { keymap[pos] = dmi_results.keymap[i]; keymap[pos].code |= (0x0010 << 16); pos++; } kfree(dmi_results.keymap); /* Append table with extra events of type 0x0010 which are not in DMI */ for (i = 0; i < ARRAY_SIZE(dell_wmi_keymap_type_0010); i++) { const struct key_entry *entry = &dell_wmi_keymap_type_0010[i]; /* * Check if we've already found this scancode. This takes * quadratic time, but it doesn't matter unless the list * of extra keys gets very long. */ if (dmi_results.keymap_size && have_scancode(entry->code | (0x0010 << 16), keymap, dmi_results.keymap_size) ) continue; keymap[pos] = *entry; keymap[pos].code |= (0x0010 << 16); pos++; } /* Append table with events of type 0x0011 */ for (i = 0; i < ARRAY_SIZE(dell_wmi_keymap_type_0011); i++) { keymap[pos] = dell_wmi_keymap_type_0011[i]; keymap[pos].code |= (0x0011 << 16); pos++; } /* * Now append also table with "legacy" events of type 0x0000. Some of * them are reported also on laptops which have scancodes in DMI. */ for (i = 0; i < ARRAY_SIZE(dell_wmi_keymap_type_0000); i++) { keymap[pos] = dell_wmi_keymap_type_0000[i]; pos++; } keymap[pos].type = KE_END; err = sparse_keymap_setup(priv->input_dev, keymap, NULL); /* * Sparse keymap library makes a copy of keymap so we don't need the * original one that was allocated. */ kfree(keymap); if (err) goto err_free_dev; err = input_register_device(priv->input_dev); if (err) goto err_free_dev; return 0; err_free_dev: input_free_device(priv->input_dev); return err; } static void dell_wmi_input_destroy(struct wmi_device *wdev) { struct dell_wmi_priv *priv = dev_get_drvdata(&wdev->dev); input_unregister_device(priv->input_dev); } /* * According to Dell SMBIOS documentation: * * 17 3 Application Program Registration * * cbArg1 Application ID 1 = 0x00010000 * cbArg2 Application ID 2 * QUICKSET/DCP = 0x51534554 "QSET" * ALS Driver = 0x416c7353 "AlsS" * Latitude ON = 0x4c6f6e52 "LonR" * cbArg3 Application version or revision number * cbArg4 0 = Unregister application * 1 = Register application * cbRes1 Standard return codes (0, -1, -2) */ static int dell_wmi_events_set_enabled(bool enable) { struct calling_interface_buffer *buffer; int ret; buffer = kzalloc(sizeof(struct calling_interface_buffer), GFP_KERNEL); if (!buffer) return -ENOMEM; buffer->cmd_class = CLASS_INFO; buffer->cmd_select = SELECT_APP_REGISTRATION; buffer->input[0] = 0x10000; buffer->input[1] = 0x51534554; buffer->input[3] = enable; ret = dell_smbios_call(buffer); if (ret == 0) ret = buffer->output[0]; kfree(buffer); return dell_smbios_error(ret); } static int dell_wmi_probe(struct wmi_device *wdev) { struct dell_wmi_priv *priv; int ret; ret = dell_wmi_get_descriptor_valid(); if (ret) return ret; priv = devm_kzalloc( &wdev->dev, sizeof(struct dell_wmi_priv), GFP_KERNEL); if (!priv) return -ENOMEM; dev_set_drvdata(&wdev->dev, priv); if (!dell_wmi_get_interface_version(&priv->interface_version)) return -EPROBE_DEFER; return dell_wmi_input_setup(wdev); } static int dell_wmi_remove(struct wmi_device *wdev) { dell_wmi_input_destroy(wdev); return 0; } static const struct wmi_device_id dell_wmi_id_table[] = { { .guid_string = DELL_EVENT_GUID }, { }, }; static struct wmi_driver dell_wmi_driver = { .driver = { .name = "dell-wmi", }, .id_table = dell_wmi_id_table, .probe = dell_wmi_probe, .remove = dell_wmi_remove, .notify = dell_wmi_notify, }; static int __init dell_wmi_init(void) { int err; dmi_check_system(dell_wmi_smbios_list); if (wmi_requires_smbios_request) { err = dell_wmi_events_set_enabled(true); if (err) { pr_err("Failed to enable WMI events\n"); return err; } } return wmi_driver_register(&dell_wmi_driver); } late_initcall(dell_wmi_init); static void __exit dell_wmi_exit(void) { if (wmi_requires_smbios_request) dell_wmi_events_set_enabled(false); wmi_driver_unregister(&dell_wmi_driver); } module_exit(dell_wmi_exit);
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