/* * HP WMI hotkeys * * Copyright (C) 2008 Red Hat * * Portions based on wistron_btns.c: * Copyright (C) 2005 Miloslav Trmac * Copyright (C) 2005 Bernhard Rosenkraenzer * Copyright (C) 2005 Dmitry Torokhov * * 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 */ #include #include #include #include #include #include #include #include #include #include MODULE_AUTHOR("Matthew Garrett "); 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 HPWMI_DISPLAY_QUERY 0x1 #define HPWMI_HDDTEMP_QUERY 0x2 #define HPWMI_ALS_QUERY 0x3 #define HPWMI_HARDWARE_QUERY 0x4 #define HPWMI_WIRELESS_QUERY 0x5 #define HPWMI_HOTKEY_QUERY 0xc static int __init hp_wmi_bios_setup(struct platform_device *device); static int __exit hp_wmi_bios_remove(struct platform_device *device); static int hp_wmi_resume_handler(struct platform_device *device); struct bios_args { u32 signature; u32 command; u32 commandtype; u32 datasize; u32 data; }; struct bios_return { u32 sigpass; u32 return_code; u32 value; }; struct key_entry { char type; /* See KE_* below */ u16 code; u16 keycode; }; enum { KE_KEY, KE_END }; static struct key_entry hp_wmi_keymap[] = { {KE_KEY, 0x02, KEY_BRIGHTNESSUP}, {KE_KEY, 0x03, KEY_BRIGHTNESSDOWN}, {KE_KEY, 0x20e6, KEY_PROG1}, {KE_KEY, 0x2142, KEY_MEDIA}, {KE_KEY, 0x213b, KEY_INFO}, {KE_KEY, 0x231b, KEY_HELP}, {KE_END, 0} }; static struct input_dev *hp_wmi_input_dev; static struct platform_device *hp_wmi_platform_dev; static struct rfkill *wifi_rfkill; static struct rfkill *bluetooth_rfkill; static struct rfkill *wwan_rfkill; static struct platform_driver hp_wmi_driver = { .driver = { .name = "hp-wmi", .owner = THIS_MODULE, }, .probe = hp_wmi_bios_setup, .remove = hp_wmi_bios_remove, .resume = hp_wmi_resume_handler, }; static int hp_wmi_perform_query(int query, int write, int value) { struct bios_return bios_return; acpi_status status; union acpi_object *obj; struct bios_args args = { .signature = 0x55434553, .command = write ? 0x2 : 0x1, .commandtype = query, .datasize = write ? 0x4 : 0, .data = value, }; struct acpi_buffer input = { sizeof(struct bios_args), &args }; struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, NULL }; status = wmi_evaluate_method(HPWMI_BIOS_GUID, 0, 0x3, &input, &output); obj = output.pointer; if (!obj || obj->type != ACPI_TYPE_BUFFER) return -EINVAL; bios_return = *((struct bios_return *)obj->buffer.pointer); if (bios_return.return_code > 0) return bios_return.return_code * -1; else return bios_return.value; } static int hp_wmi_display_state(void) { return hp_wmi_perform_query(HPWMI_DISPLAY_QUERY, 0, 0); } static int hp_wmi_hddtemp_state(void) { return hp_wmi_perform_query(HPWMI_HDDTEMP_QUERY, 0, 0); } static int hp_wmi_als_state(void) { return hp_wmi_perform_query(HPWMI_ALS_QUERY, 0, 0); } static int hp_wmi_dock_state(void) { int ret = hp_wmi_perform_query(HPWMI_HARDWARE_QUERY, 0, 0); if (ret < 0) return ret; return ret & 0x1; } static int hp_wmi_tablet_state(void) { int ret = hp_wmi_perform_query(HPWMI_HARDWARE_QUERY, 0, 0); if (ret < 0) return ret; return (ret & 0x4) ? 1 : 0; } static int hp_wmi_set_block(void *data, bool blocked) { unsigned long b = (unsigned long) data; int query = BIT(b + 8) | ((!blocked) << b); return hp_wmi_perform_query(HPWMI_WIRELESS_QUERY, 1, query); } static const struct rfkill_ops hp_wmi_rfkill_ops = { .set_block = hp_wmi_set_block, }; static bool hp_wmi_wifi_state(void) { int wireless = hp_wmi_perform_query(HPWMI_WIRELESS_QUERY, 0, 0); if (wireless & 0x100) return false; else return true; } static bool hp_wmi_bluetooth_state(void) { int wireless = hp_wmi_perform_query(HPWMI_WIRELESS_QUERY, 0, 0); if (wireless & 0x10000) return false; else return true; } static bool hp_wmi_wwan_state(void) { int wireless = hp_wmi_perform_query(HPWMI_WIRELESS_QUERY, 0, 0); if (wireless & 0x1000000) return false; else return true; } static ssize_t show_display(struct device *dev, struct device_attribute *attr, char *buf) { int value = hp_wmi_display_state(); if (value < 0) return -EINVAL; return sprintf(buf, "%d\n", value); } static ssize_t show_hddtemp(struct device *dev, struct device_attribute *attr, char *buf) { int value = hp_wmi_hddtemp_state(); if (value < 0) return -EINVAL; return sprintf(buf, "%d\n", value); } static ssize_t show_als(struct device *dev, struct device_attribute *attr, char *buf) { int value = hp_wmi_als_state(); if (value < 0) return -EINVAL; return sprintf(buf, "%d\n", value); } static ssize_t show_dock(struct device *dev, struct device_attribute *attr, char *buf) { int value = hp_wmi_dock_state(); if (value < 0) return -EINVAL; return sprintf(buf, "%d\n", value); } static ssize_t show_tablet(struct device *dev, struct device_attribute *attr, char *buf) { int value = hp_wmi_tablet_state(); if (value < 0) return -EINVAL; return sprintf(buf, "%d\n", value); } static ssize_t set_als(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) { u32 tmp = simple_strtoul(buf, NULL, 10); hp_wmi_perform_query(HPWMI_ALS_QUERY, 1, tmp); return count; } static DEVICE_ATTR(display, S_IRUGO, show_display, NULL); static DEVICE_ATTR(hddtemp, S_IRUGO, show_hddtemp, NULL); static DEVICE_ATTR(als, S_IRUGO | S_IWUSR, show_als, set_als); static DEVICE_ATTR(dock, S_IRUGO, show_dock, NULL); static DEVICE_ATTR(tablet, S_IRUGO, show_tablet, NULL); static struct key_entry *hp_wmi_get_entry_by_scancode(int code) { struct key_entry *key; for (key = hp_wmi_keymap; key->type != KE_END; key++) if (code == key->code) return key; return NULL; } static struct key_entry *hp_wmi_get_entry_by_keycode(int keycode) { struct key_entry *key; for (key = hp_wmi_keymap; key->type != KE_END; key++) if (key->type == KE_KEY && keycode == key->keycode) return key; return NULL; } static int hp_wmi_getkeycode(struct input_dev *dev, int scancode, int *keycode) { struct key_entry *key = hp_wmi_get_entry_by_scancode(scancode); if (key && key->type == KE_KEY) { *keycode = key->keycode; return 0; } return -EINVAL; } static int hp_wmi_setkeycode(struct input_dev *dev, int scancode, int keycode) { struct key_entry *key; int old_keycode; if (keycode < 0 || keycode > KEY_MAX) return -EINVAL; key = hp_wmi_get_entry_by_scancode(scancode); if (key && key->type == KE_KEY) { old_keycode = key->keycode; key->keycode = keycode; set_bit(keycode, dev->keybit); if (!hp_wmi_get_entry_by_keycode(old_keycode)) clear_bit(old_keycode, dev->keybit); return 0; } return -EINVAL; } static void hp_wmi_notify(u32 value, void *context) { struct acpi_buffer response = { ACPI_ALLOCATE_BUFFER, NULL }; static struct key_entry *key; union acpi_object *obj; wmi_get_event_data(value, &response); obj = (union acpi_object *)response.pointer; if (obj && obj->type == ACPI_TYPE_BUFFER && obj->buffer.length == 8) { int eventcode = *((u8 *) obj->buffer.pointer); if (eventcode == 0x4) eventcode = hp_wmi_perform_query(HPWMI_HOTKEY_QUERY, 0, 0); key = hp_wmi_get_entry_by_scancode(eventcode); if (key) { switch (key->type) { case KE_KEY: input_report_key(hp_wmi_input_dev, key->keycode, 1); input_sync(hp_wmi_input_dev); input_report_key(hp_wmi_input_dev, key->keycode, 0); input_sync(hp_wmi_input_dev); break; } } else if (eventcode == 0x1) { input_report_switch(hp_wmi_input_dev, SW_DOCK, hp_wmi_dock_state()); input_report_switch(hp_wmi_input_dev, SW_TABLET_MODE, hp_wmi_tablet_state()); input_sync(hp_wmi_input_dev); } else if (eventcode == 0x5) { if (wifi_rfkill) rfkill_set_sw_state(wifi_rfkill, hp_wmi_wifi_state()); if (bluetooth_rfkill) rfkill_set_sw_state(bluetooth_rfkill, hp_wmi_bluetooth_state()); if (wwan_rfkill) rfkill_set_sw_state(wwan_rfkill, hp_wmi_wwan_state()); } else printk(KERN_INFO "HP WMI: Unknown key pressed - %x\n", eventcode); } else printk(KERN_INFO "HP WMI: Unknown response received\n"); } static int __init hp_wmi_input_setup(void) { struct key_entry *key; int err; hp_wmi_input_dev = input_allocate_device(); hp_wmi_input_dev->name = "HP WMI hotkeys"; hp_wmi_input_dev->phys = "wmi/input0"; hp_wmi_input_dev->id.bustype = BUS_HOST; hp_wmi_input_dev->getkeycode = hp_wmi_getkeycode; hp_wmi_input_dev->setkeycode = hp_wmi_setkeycode; for (key = hp_wmi_keymap; key->type != KE_END; key++) { switch (key->type) { case KE_KEY: set_bit(EV_KEY, hp_wmi_input_dev->evbit); set_bit(key->keycode, hp_wmi_input_dev->keybit); break; } } set_bit(EV_SW, hp_wmi_input_dev->evbit); set_bit(SW_DOCK, hp_wmi_input_dev->swbit); set_bit(SW_TABLET_MODE, hp_wmi_input_dev->swbit); /* Set initial hardware state */ input_report_switch(hp_wmi_input_dev, SW_DOCK, hp_wmi_dock_state()); input_report_switch(hp_wmi_input_dev, SW_TABLET_MODE, hp_wmi_tablet_state()); input_sync(hp_wmi_input_dev); err = input_register_device(hp_wmi_input_dev); if (err) { input_free_device(hp_wmi_input_dev); return err; } return 0; } static void cleanup_sysfs(struct platform_device *device) { device_remove_file(&device->dev, &dev_attr_display); device_remove_file(&device->dev, &dev_attr_hddtemp); device_remove_file(&device->dev, &dev_attr_als); device_remove_file(&device->dev, &dev_attr_dock); device_remove_file(&device->dev, &dev_attr_tablet); } static int __init hp_wmi_bios_setup(struct platform_device *device) { int err; int wireless = hp_wmi_perform_query(HPWMI_WIRELESS_QUERY, 0, 0); err = device_create_file(&device->dev, &dev_attr_display); if (err) goto add_sysfs_error; err = device_create_file(&device->dev, &dev_attr_hddtemp); if (err) goto add_sysfs_error; err = device_create_file(&device->dev, &dev_attr_als); if (err) goto add_sysfs_error; err = device_create_file(&device->dev, &dev_attr_dock); if (err) goto add_sysfs_error; err = device_create_file(&device->dev, &dev_attr_tablet); if (err) goto add_sysfs_error; if (wireless & 0x1) { wifi_rfkill = rfkill_alloc("hp-wifi", &device->dev, RFKILL_TYPE_WLAN, &hp_wmi_rfkill_ops, (void *) 0); 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 *) 1); 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 *) 2); err = rfkill_register(wwan_rfkill); if (err) goto register_wwan_err; } return 0; register_wwan_err: rfkill_destroy(wwan_rfkill); if (bluetooth_rfkill) rfkill_unregister(bluetooth_rfkill); register_bluetooth_error: rfkill_destroy(bluetooth_rfkill); if (wifi_rfkill) rfkill_unregister(wifi_rfkill); register_wifi_error: rfkill_destroy(wifi_rfkill); add_sysfs_error: cleanup_sysfs(device); return err; } static int __exit hp_wmi_bios_remove(struct platform_device *device) { cleanup_sysfs(device); 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); } return 0; } static int hp_wmi_resume_handler(struct platform_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) { input_report_switch(hp_wmi_input_dev, SW_DOCK, hp_wmi_dock_state()); input_report_switch(hp_wmi_input_dev, SW_TABLET_MODE, hp_wmi_tablet_state()); input_sync(hp_wmi_input_dev); } return 0; } static int __init hp_wmi_init(void) { int err; if (wmi_has_guid(HPWMI_EVENT_GUID)) { err = wmi_install_notify_handler(HPWMI_EVENT_GUID, hp_wmi_notify, NULL); if (!err) hp_wmi_input_setup(); } if (wmi_has_guid(HPWMI_BIOS_GUID)) { err = platform_driver_register(&hp_wmi_driver); if (err) return 0; hp_wmi_platform_dev = platform_device_alloc("hp-wmi", -1); if (!hp_wmi_platform_dev) { platform_driver_unregister(&hp_wmi_driver); return 0; } platform_device_add(hp_wmi_platform_dev); } return 0; } static void __exit hp_wmi_exit(void) { if (wmi_has_guid(HPWMI_EVENT_GUID)) { wmi_remove_notify_handler(HPWMI_EVENT_GUID); input_unregister_device(hp_wmi_input_dev); } if (hp_wmi_platform_dev) { platform_device_del(hp_wmi_platform_dev); platform_driver_unregister(&hp_wmi_driver); } } module_init(hp_wmi_init); module_exit(hp_wmi_exit);