58b939959d
The HID layer has some scan codes of the form 0xffbc0000 for logitech devices which do not work if scancode is typed as signed int, so we need to switch to unsigned it instead. While at it keycode being signed does not make much sense either. Acked-by: Márton Németh <nm127@freemail.hu> Acked-by: Matthew Garrett <mjg@redhat.com> Acked-by: Jiri Kosina <jkosina@suse.cz> Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
620 lines
15 KiB
C
620 lines
15 KiB
C
/*
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* HP WMI hotkeys
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*
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* Copyright (C) 2008 Red Hat <mjg@redhat.com>
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*
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* Portions based on wistron_btns.c:
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* Copyright (C) 2005 Miloslav Trmac <mitr@volny.cz>
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* Copyright (C) 2005 Bernhard Rosenkraenzer <bero@arklinux.org>
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* Copyright (C) 2005 Dmitry Torokhov <dtor@mail.ru>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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#include <linux/kernel.h>
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#include <linux/module.h>
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#include <linux/init.h>
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#include <linux/types.h>
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#include <linux/input.h>
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#include <acpi/acpi_drivers.h>
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#include <linux/platform_device.h>
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#include <linux/acpi.h>
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#include <linux/rfkill.h>
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#include <linux/string.h>
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MODULE_AUTHOR("Matthew Garrett <mjg59@srcf.ucam.org>");
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MODULE_DESCRIPTION("HP laptop WMI hotkeys driver");
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MODULE_LICENSE("GPL");
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MODULE_ALIAS("wmi:95F24279-4D7B-4334-9387-ACCDC67EF61C");
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MODULE_ALIAS("wmi:5FB7F034-2C63-45e9-BE91-3D44E2C707E4");
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#define HPWMI_EVENT_GUID "95F24279-4D7B-4334-9387-ACCDC67EF61C"
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#define HPWMI_BIOS_GUID "5FB7F034-2C63-45e9-BE91-3D44E2C707E4"
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#define HPWMI_DISPLAY_QUERY 0x1
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#define HPWMI_HDDTEMP_QUERY 0x2
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#define HPWMI_ALS_QUERY 0x3
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#define HPWMI_HARDWARE_QUERY 0x4
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#define HPWMI_WIRELESS_QUERY 0x5
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#define HPWMI_HOTKEY_QUERY 0xc
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enum hp_wmi_radio {
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HPWMI_WIFI = 0,
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HPWMI_BLUETOOTH = 1,
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HPWMI_WWAN = 2,
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};
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static int __devinit hp_wmi_bios_setup(struct platform_device *device);
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static int __exit hp_wmi_bios_remove(struct platform_device *device);
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static int hp_wmi_resume_handler(struct device *device);
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struct bios_args {
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u32 signature;
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u32 command;
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u32 commandtype;
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u32 datasize;
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u32 data;
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};
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struct bios_return {
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u32 sigpass;
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u32 return_code;
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u32 value;
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};
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struct key_entry {
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char type; /* See KE_* below */
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u16 code;
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u16 keycode;
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};
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enum { KE_KEY, KE_END };
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static struct key_entry hp_wmi_keymap[] = {
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{KE_KEY, 0x02, KEY_BRIGHTNESSUP},
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{KE_KEY, 0x03, KEY_BRIGHTNESSDOWN},
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{KE_KEY, 0x20e6, KEY_PROG1},
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{KE_KEY, 0x2142, KEY_MEDIA},
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{KE_KEY, 0x213b, KEY_INFO},
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{KE_KEY, 0x2169, KEY_DIRECTION},
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{KE_KEY, 0x231b, KEY_HELP},
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{KE_END, 0}
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};
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static struct input_dev *hp_wmi_input_dev;
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static struct platform_device *hp_wmi_platform_dev;
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static struct rfkill *wifi_rfkill;
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static struct rfkill *bluetooth_rfkill;
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static struct rfkill *wwan_rfkill;
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static const struct dev_pm_ops hp_wmi_pm_ops = {
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.resume = hp_wmi_resume_handler,
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.restore = hp_wmi_resume_handler,
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};
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static struct platform_driver hp_wmi_driver = {
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.driver = {
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.name = "hp-wmi",
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.owner = THIS_MODULE,
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.pm = &hp_wmi_pm_ops,
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},
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.probe = hp_wmi_bios_setup,
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.remove = hp_wmi_bios_remove,
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};
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static int hp_wmi_perform_query(int query, int write, int value)
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{
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struct bios_return bios_return;
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acpi_status status;
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union acpi_object *obj;
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struct bios_args args = {
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.signature = 0x55434553,
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.command = write ? 0x2 : 0x1,
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.commandtype = query,
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.datasize = write ? 0x4 : 0,
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.data = value,
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};
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struct acpi_buffer input = { sizeof(struct bios_args), &args };
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struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, NULL };
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status = wmi_evaluate_method(HPWMI_BIOS_GUID, 0, 0x3, &input, &output);
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obj = output.pointer;
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if (!obj)
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return -EINVAL;
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else if (obj->type != ACPI_TYPE_BUFFER) {
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kfree(obj);
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return -EINVAL;
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}
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bios_return = *((struct bios_return *)obj->buffer.pointer);
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kfree(obj);
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if (bios_return.return_code > 0)
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return bios_return.return_code * -1;
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else
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return bios_return.value;
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}
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static int hp_wmi_display_state(void)
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{
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return hp_wmi_perform_query(HPWMI_DISPLAY_QUERY, 0, 0);
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}
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static int hp_wmi_hddtemp_state(void)
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{
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return hp_wmi_perform_query(HPWMI_HDDTEMP_QUERY, 0, 0);
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}
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static int hp_wmi_als_state(void)
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{
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return hp_wmi_perform_query(HPWMI_ALS_QUERY, 0, 0);
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}
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static int hp_wmi_dock_state(void)
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{
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int ret = hp_wmi_perform_query(HPWMI_HARDWARE_QUERY, 0, 0);
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if (ret < 0)
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return ret;
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return ret & 0x1;
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}
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static int hp_wmi_tablet_state(void)
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{
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int ret = hp_wmi_perform_query(HPWMI_HARDWARE_QUERY, 0, 0);
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if (ret < 0)
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return ret;
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return (ret & 0x4) ? 1 : 0;
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}
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static int hp_wmi_set_block(void *data, bool blocked)
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{
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enum hp_wmi_radio r = (enum hp_wmi_radio) data;
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int query = BIT(r + 8) | ((!blocked) << r);
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return hp_wmi_perform_query(HPWMI_WIRELESS_QUERY, 1, query);
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}
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static const struct rfkill_ops hp_wmi_rfkill_ops = {
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.set_block = hp_wmi_set_block,
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};
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static bool hp_wmi_get_sw_state(enum hp_wmi_radio r)
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{
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int wireless = hp_wmi_perform_query(HPWMI_WIRELESS_QUERY, 0, 0);
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int mask = 0x200 << (r * 8);
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if (wireless & mask)
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return false;
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else
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return true;
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}
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static bool hp_wmi_get_hw_state(enum hp_wmi_radio r)
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{
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int wireless = hp_wmi_perform_query(HPWMI_WIRELESS_QUERY, 0, 0);
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int mask = 0x800 << (r * 8);
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if (wireless & mask)
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return false;
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else
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return true;
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}
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static ssize_t show_display(struct device *dev, struct device_attribute *attr,
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char *buf)
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{
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int value = hp_wmi_display_state();
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if (value < 0)
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return -EINVAL;
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return sprintf(buf, "%d\n", value);
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}
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static ssize_t show_hddtemp(struct device *dev, struct device_attribute *attr,
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char *buf)
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{
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int value = hp_wmi_hddtemp_state();
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if (value < 0)
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return -EINVAL;
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return sprintf(buf, "%d\n", value);
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}
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static ssize_t show_als(struct device *dev, struct device_attribute *attr,
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char *buf)
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{
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int value = hp_wmi_als_state();
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if (value < 0)
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return -EINVAL;
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return sprintf(buf, "%d\n", value);
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}
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static ssize_t show_dock(struct device *dev, struct device_attribute *attr,
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char *buf)
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{
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int value = hp_wmi_dock_state();
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if (value < 0)
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return -EINVAL;
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return sprintf(buf, "%d\n", value);
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}
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static ssize_t show_tablet(struct device *dev, struct device_attribute *attr,
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char *buf)
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{
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int value = hp_wmi_tablet_state();
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if (value < 0)
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return -EINVAL;
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return sprintf(buf, "%d\n", value);
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}
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static ssize_t set_als(struct device *dev, struct device_attribute *attr,
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const char *buf, size_t count)
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{
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u32 tmp = simple_strtoul(buf, NULL, 10);
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hp_wmi_perform_query(HPWMI_ALS_QUERY, 1, tmp);
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return count;
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}
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static DEVICE_ATTR(display, S_IRUGO, show_display, NULL);
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static DEVICE_ATTR(hddtemp, S_IRUGO, show_hddtemp, NULL);
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static DEVICE_ATTR(als, S_IRUGO | S_IWUSR, show_als, set_als);
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static DEVICE_ATTR(dock, S_IRUGO, show_dock, NULL);
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static DEVICE_ATTR(tablet, S_IRUGO, show_tablet, NULL);
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static struct key_entry *hp_wmi_get_entry_by_scancode(unsigned int code)
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{
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struct key_entry *key;
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for (key = hp_wmi_keymap; key->type != KE_END; key++)
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if (code == key->code)
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return key;
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return NULL;
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}
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static struct key_entry *hp_wmi_get_entry_by_keycode(unsigned int keycode)
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{
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struct key_entry *key;
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for (key = hp_wmi_keymap; key->type != KE_END; key++)
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if (key->type == KE_KEY && keycode == key->keycode)
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return key;
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return NULL;
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}
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static int hp_wmi_getkeycode(struct input_dev *dev,
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unsigned int scancode, unsigned int *keycode)
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{
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struct key_entry *key = hp_wmi_get_entry_by_scancode(scancode);
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if (key && key->type == KE_KEY) {
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*keycode = key->keycode;
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return 0;
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}
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return -EINVAL;
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}
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static int hp_wmi_setkeycode(struct input_dev *dev,
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unsigned int scancode, unsigned int keycode)
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{
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struct key_entry *key;
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unsigned int old_keycode;
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key = hp_wmi_get_entry_by_scancode(scancode);
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if (key && key->type == KE_KEY) {
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old_keycode = key->keycode;
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key->keycode = keycode;
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set_bit(keycode, dev->keybit);
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if (!hp_wmi_get_entry_by_keycode(old_keycode))
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clear_bit(old_keycode, dev->keybit);
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return 0;
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}
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return -EINVAL;
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}
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static void hp_wmi_notify(u32 value, void *context)
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{
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struct acpi_buffer response = { ACPI_ALLOCATE_BUFFER, NULL };
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static struct key_entry *key;
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union acpi_object *obj;
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int eventcode;
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acpi_status status;
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status = wmi_get_event_data(value, &response);
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if (status != AE_OK) {
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printk(KERN_INFO "hp-wmi: bad event status 0x%x\n", status);
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return;
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}
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obj = (union acpi_object *)response.pointer;
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if (!obj || obj->type != ACPI_TYPE_BUFFER || obj->buffer.length != 8) {
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printk(KERN_INFO "HP WMI: Unknown response received\n");
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kfree(obj);
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return;
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}
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eventcode = *((u8 *) obj->buffer.pointer);
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kfree(obj);
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if (eventcode == 0x4)
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eventcode = hp_wmi_perform_query(HPWMI_HOTKEY_QUERY, 0,
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0);
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key = hp_wmi_get_entry_by_scancode(eventcode);
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if (key) {
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switch (key->type) {
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case KE_KEY:
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input_report_key(hp_wmi_input_dev,
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key->keycode, 1);
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input_sync(hp_wmi_input_dev);
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input_report_key(hp_wmi_input_dev,
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key->keycode, 0);
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input_sync(hp_wmi_input_dev);
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break;
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}
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} else if (eventcode == 0x1) {
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input_report_switch(hp_wmi_input_dev, SW_DOCK,
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hp_wmi_dock_state());
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input_report_switch(hp_wmi_input_dev, SW_TABLET_MODE,
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hp_wmi_tablet_state());
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input_sync(hp_wmi_input_dev);
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} else if (eventcode == 0x5) {
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if (wifi_rfkill)
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rfkill_set_states(wifi_rfkill,
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hp_wmi_get_sw_state(HPWMI_WIFI),
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hp_wmi_get_hw_state(HPWMI_WIFI));
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if (bluetooth_rfkill)
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rfkill_set_states(bluetooth_rfkill,
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hp_wmi_get_sw_state(HPWMI_BLUETOOTH),
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hp_wmi_get_hw_state(HPWMI_BLUETOOTH));
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if (wwan_rfkill)
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rfkill_set_states(wwan_rfkill,
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hp_wmi_get_sw_state(HPWMI_WWAN),
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hp_wmi_get_hw_state(HPWMI_WWAN));
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} else
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printk(KERN_INFO "HP WMI: Unknown key pressed - %x\n",
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eventcode);
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}
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static int __init hp_wmi_input_setup(void)
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{
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struct key_entry *key;
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int err;
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hp_wmi_input_dev = input_allocate_device();
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hp_wmi_input_dev->name = "HP WMI hotkeys";
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hp_wmi_input_dev->phys = "wmi/input0";
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hp_wmi_input_dev->id.bustype = BUS_HOST;
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hp_wmi_input_dev->getkeycode = hp_wmi_getkeycode;
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hp_wmi_input_dev->setkeycode = hp_wmi_setkeycode;
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for (key = hp_wmi_keymap; key->type != KE_END; key++) {
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switch (key->type) {
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case KE_KEY:
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set_bit(EV_KEY, hp_wmi_input_dev->evbit);
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set_bit(key->keycode, hp_wmi_input_dev->keybit);
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break;
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}
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}
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set_bit(EV_SW, hp_wmi_input_dev->evbit);
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set_bit(SW_DOCK, hp_wmi_input_dev->swbit);
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set_bit(SW_TABLET_MODE, hp_wmi_input_dev->swbit);
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/* Set initial hardware state */
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input_report_switch(hp_wmi_input_dev, SW_DOCK, hp_wmi_dock_state());
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input_report_switch(hp_wmi_input_dev, SW_TABLET_MODE,
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hp_wmi_tablet_state());
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input_sync(hp_wmi_input_dev);
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err = input_register_device(hp_wmi_input_dev);
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if (err) {
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input_free_device(hp_wmi_input_dev);
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return err;
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}
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return 0;
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}
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static void cleanup_sysfs(struct platform_device *device)
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{
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device_remove_file(&device->dev, &dev_attr_display);
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device_remove_file(&device->dev, &dev_attr_hddtemp);
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device_remove_file(&device->dev, &dev_attr_als);
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device_remove_file(&device->dev, &dev_attr_dock);
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device_remove_file(&device->dev, &dev_attr_tablet);
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}
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static int __devinit hp_wmi_bios_setup(struct platform_device *device)
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{
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int err;
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int wireless = hp_wmi_perform_query(HPWMI_WIRELESS_QUERY, 0, 0);
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err = device_create_file(&device->dev, &dev_attr_display);
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if (err)
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goto add_sysfs_error;
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err = device_create_file(&device->dev, &dev_attr_hddtemp);
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if (err)
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goto add_sysfs_error;
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err = device_create_file(&device->dev, &dev_attr_als);
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if (err)
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goto add_sysfs_error;
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err = device_create_file(&device->dev, &dev_attr_dock);
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if (err)
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goto add_sysfs_error;
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err = device_create_file(&device->dev, &dev_attr_tablet);
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if (err)
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goto add_sysfs_error;
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if (wireless & 0x1) {
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wifi_rfkill = rfkill_alloc("hp-wifi", &device->dev,
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RFKILL_TYPE_WLAN,
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&hp_wmi_rfkill_ops,
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(void *) HPWMI_WIFI);
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rfkill_init_sw_state(wifi_rfkill,
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hp_wmi_get_sw_state(HPWMI_WIFI));
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rfkill_set_hw_state(wifi_rfkill,
|
|
hp_wmi_get_hw_state(HPWMI_WIFI));
|
|
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 *) HPWMI_BLUETOOTH);
|
|
rfkill_init_sw_state(bluetooth_rfkill,
|
|
hp_wmi_get_sw_state(HPWMI_BLUETOOTH));
|
|
rfkill_set_hw_state(bluetooth_rfkill,
|
|
hp_wmi_get_hw_state(HPWMI_BLUETOOTH));
|
|
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 *) HPWMI_WWAN);
|
|
rfkill_init_sw_state(wwan_rfkill,
|
|
hp_wmi_get_sw_state(HPWMI_WWAN));
|
|
rfkill_set_hw_state(wwan_rfkill,
|
|
hp_wmi_get_hw_state(HPWMI_WWAN));
|
|
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 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);
|
|
}
|
|
|
|
if (wifi_rfkill)
|
|
rfkill_set_states(wifi_rfkill,
|
|
hp_wmi_get_sw_state(HPWMI_WIFI),
|
|
hp_wmi_get_hw_state(HPWMI_WIFI));
|
|
if (bluetooth_rfkill)
|
|
rfkill_set_states(bluetooth_rfkill,
|
|
hp_wmi_get_sw_state(HPWMI_BLUETOOTH),
|
|
hp_wmi_get_hw_state(HPWMI_BLUETOOTH));
|
|
if (wwan_rfkill)
|
|
rfkill_set_states(wwan_rfkill,
|
|
hp_wmi_get_sw_state(HPWMI_WWAN),
|
|
hp_wmi_get_hw_state(HPWMI_WWAN));
|
|
|
|
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 (ACPI_SUCCESS(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);
|