![Seth Forshee](/assets/img/avatar_default.png)
Several Satellite models have a buggy implementation of the INFO method that causes ACPI exceptions when executed: ACPI Error: Result stack is empty! State=ffff88012d70f800 (20110413/dswstate-98) ACPI Exception: AE_AML_NO_RETURN_VALUE, Missing or null operand (20110413/dsutils-646) ACPI Exception: AE_AML_NO_RETURN_VALUE, While creating Arg 0 (20110413/dsutils-763) ACPI Error: Method parse/execution failed [\_SB_.VALZ.GETE] (Node ffff880131175eb0), AE_AML_NO_RETURN_VALUE (20110413/psparse-536) ACPI Error: Method parse/execution failed [\_SB_.VALZ.INFO] (Node ffff880131175ed8), AE_AML_NO_RETURN_VALUE (20110413/psparse-536) toshiba_acpi: ACPI INFO method execution failed toshiba_acpi: Failed to query hotkey event All known machines with this implementation also have a WMI interface with event GUID 59142400-C6A3-40FA-BADB-8A2652834100 which is not seen on any other models. Refuse to load toshiba_acpi on machines with this guid. Signed-off-by: Seth Forshee <seth.forshee@canonical.com> Signed-off-by: Matthew Garrett <mjg@redhat.com>
1286 lines
31 KiB
C
1286 lines
31 KiB
C
/*
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* toshiba_acpi.c - Toshiba Laptop ACPI Extras
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*
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*
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* Copyright (C) 2002-2004 John Belmonte
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* Copyright (C) 2008 Philip Langdale
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* Copyright (C) 2010 Pierre Ducroquet
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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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*
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* The devolpment page for this driver is located at
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* http://memebeam.org/toys/ToshibaAcpiDriver.
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*
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* Credits:
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* Jonathan A. Buzzard - Toshiba HCI info, and critical tips on reverse
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* engineering the Windows drivers
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* Yasushi Nagato - changes for linux kernel 2.4 -> 2.5
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* Rob Miller - TV out and hotkeys help
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*
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*
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* TODO
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*
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*/
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#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
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#define TOSHIBA_ACPI_VERSION "0.19"
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#define PROC_INTERFACE_VERSION 1
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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/proc_fs.h>
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#include <linux/seq_file.h>
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#include <linux/backlight.h>
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#include <linux/rfkill.h>
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#include <linux/input.h>
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#include <linux/input/sparse-keymap.h>
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#include <linux/leds.h>
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#include <linux/slab.h>
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#include <linux/workqueue.h>
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#include <linux/i8042.h>
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#include <asm/uaccess.h>
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#include <acpi/acpi_drivers.h>
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MODULE_AUTHOR("John Belmonte");
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MODULE_DESCRIPTION("Toshiba Laptop ACPI Extras Driver");
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MODULE_LICENSE("GPL");
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#define TOSHIBA_WMI_EVENT_GUID "59142400-C6A3-40FA-BADB-8A2652834100"
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/* Scan code for Fn key on TOS1900 models */
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#define TOS1900_FN_SCAN 0x6e
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/* Toshiba ACPI method paths */
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#define METHOD_VIDEO_OUT "\\_SB_.VALX.DSSX"
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/* Toshiba HCI interface definitions
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*
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* HCI is Toshiba's "Hardware Control Interface" which is supposed to
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* be uniform across all their models. Ideally we would just call
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* dedicated ACPI methods instead of using this primitive interface.
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* However the ACPI methods seem to be incomplete in some areas (for
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* example they allow setting, but not reading, the LCD brightness value),
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* so this is still useful.
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*/
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#define HCI_WORDS 6
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/* operations */
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#define HCI_SET 0xff00
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#define HCI_GET 0xfe00
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/* return codes */
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#define HCI_SUCCESS 0x0000
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#define HCI_FAILURE 0x1000
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#define HCI_NOT_SUPPORTED 0x8000
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#define HCI_EMPTY 0x8c00
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/* registers */
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#define HCI_FAN 0x0004
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#define HCI_SYSTEM_EVENT 0x0016
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#define HCI_VIDEO_OUT 0x001c
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#define HCI_HOTKEY_EVENT 0x001e
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#define HCI_LCD_BRIGHTNESS 0x002a
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#define HCI_WIRELESS 0x0056
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/* field definitions */
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#define HCI_HOTKEY_DISABLE 0x0b
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#define HCI_HOTKEY_ENABLE 0x09
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#define HCI_LCD_BRIGHTNESS_BITS 3
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#define HCI_LCD_BRIGHTNESS_SHIFT (16-HCI_LCD_BRIGHTNESS_BITS)
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#define HCI_LCD_BRIGHTNESS_LEVELS (1 << HCI_LCD_BRIGHTNESS_BITS)
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#define HCI_VIDEO_OUT_LCD 0x1
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#define HCI_VIDEO_OUT_CRT 0x2
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#define HCI_VIDEO_OUT_TV 0x4
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#define HCI_WIRELESS_KILL_SWITCH 0x01
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#define HCI_WIRELESS_BT_PRESENT 0x0f
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#define HCI_WIRELESS_BT_ATTACH 0x40
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#define HCI_WIRELESS_BT_POWER 0x80
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struct toshiba_acpi_dev {
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struct acpi_device *acpi_dev;
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const char *method_hci;
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struct rfkill *bt_rfk;
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struct input_dev *hotkey_dev;
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struct work_struct hotkey_work;
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struct backlight_device *backlight_dev;
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struct led_classdev led_dev;
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int force_fan;
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int last_key_event;
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int key_event_valid;
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unsigned int illumination_supported:1;
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unsigned int video_supported:1;
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unsigned int fan_supported:1;
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unsigned int system_event_supported:1;
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unsigned int ntfy_supported:1;
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unsigned int info_supported:1;
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struct mutex mutex;
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};
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static struct toshiba_acpi_dev *toshiba_acpi;
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static const struct acpi_device_id toshiba_device_ids[] = {
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{"TOS6200", 0},
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{"TOS6208", 0},
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{"TOS1900", 0},
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{"", 0},
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};
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MODULE_DEVICE_TABLE(acpi, toshiba_device_ids);
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static const struct key_entry toshiba_acpi_keymap[] __devinitconst = {
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{ KE_KEY, 0x101, { KEY_MUTE } },
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{ KE_KEY, 0x102, { KEY_ZOOMOUT } },
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{ KE_KEY, 0x103, { KEY_ZOOMIN } },
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{ KE_KEY, 0x12c, { KEY_KBDILLUMTOGGLE } },
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{ KE_KEY, 0x139, { KEY_ZOOMRESET } },
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{ KE_KEY, 0x13b, { KEY_COFFEE } },
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{ KE_KEY, 0x13c, { KEY_BATTERY } },
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{ KE_KEY, 0x13d, { KEY_SLEEP } },
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{ KE_KEY, 0x13e, { KEY_SUSPEND } },
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{ KE_KEY, 0x13f, { KEY_SWITCHVIDEOMODE } },
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{ KE_KEY, 0x140, { KEY_BRIGHTNESSDOWN } },
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{ KE_KEY, 0x141, { KEY_BRIGHTNESSUP } },
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{ KE_KEY, 0x142, { KEY_WLAN } },
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{ KE_KEY, 0x143, { KEY_TOUCHPAD_TOGGLE } },
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{ KE_KEY, 0x17f, { KEY_FN } },
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{ KE_KEY, 0xb05, { KEY_PROG2 } },
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{ KE_KEY, 0xb06, { KEY_WWW } },
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{ KE_KEY, 0xb07, { KEY_MAIL } },
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{ KE_KEY, 0xb30, { KEY_STOP } },
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{ KE_KEY, 0xb31, { KEY_PREVIOUSSONG } },
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{ KE_KEY, 0xb32, { KEY_NEXTSONG } },
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{ KE_KEY, 0xb33, { KEY_PLAYPAUSE } },
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{ KE_KEY, 0xb5a, { KEY_MEDIA } },
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{ KE_IGNORE, 0x1430, { KEY_RESERVED } },
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{ KE_END, 0 },
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};
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/* utility
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*/
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static __inline__ void _set_bit(u32 * word, u32 mask, int value)
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{
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*word = (*word & ~mask) | (mask * value);
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}
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/* acpi interface wrappers
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*/
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static int write_acpi_int(const char *methodName, int val)
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{
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struct acpi_object_list params;
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union acpi_object in_objs[1];
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acpi_status status;
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params.count = ARRAY_SIZE(in_objs);
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params.pointer = in_objs;
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in_objs[0].type = ACPI_TYPE_INTEGER;
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in_objs[0].integer.value = val;
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status = acpi_evaluate_object(NULL, (char *)methodName, ¶ms, NULL);
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return (status == AE_OK) ? 0 : -EIO;
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}
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/* Perform a raw HCI call. Here we don't care about input or output buffer
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* format.
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*/
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static acpi_status hci_raw(struct toshiba_acpi_dev *dev,
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const u32 in[HCI_WORDS], u32 out[HCI_WORDS])
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{
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struct acpi_object_list params;
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union acpi_object in_objs[HCI_WORDS];
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struct acpi_buffer results;
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union acpi_object out_objs[HCI_WORDS + 1];
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acpi_status status;
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int i;
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params.count = HCI_WORDS;
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params.pointer = in_objs;
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for (i = 0; i < HCI_WORDS; ++i) {
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in_objs[i].type = ACPI_TYPE_INTEGER;
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in_objs[i].integer.value = in[i];
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}
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results.length = sizeof(out_objs);
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results.pointer = out_objs;
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status = acpi_evaluate_object(dev->acpi_dev->handle,
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(char *)dev->method_hci, ¶ms,
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&results);
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if ((status == AE_OK) && (out_objs->package.count <= HCI_WORDS)) {
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for (i = 0; i < out_objs->package.count; ++i) {
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out[i] = out_objs->package.elements[i].integer.value;
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}
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}
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return status;
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}
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/* common hci tasks (get or set one or two value)
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*
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* In addition to the ACPI status, the HCI system returns a result which
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* may be useful (such as "not supported").
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*/
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static acpi_status hci_write1(struct toshiba_acpi_dev *dev, u32 reg,
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u32 in1, u32 *result)
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{
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u32 in[HCI_WORDS] = { HCI_SET, reg, in1, 0, 0, 0 };
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u32 out[HCI_WORDS];
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acpi_status status = hci_raw(dev, in, out);
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*result = (status == AE_OK) ? out[0] : HCI_FAILURE;
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return status;
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}
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static acpi_status hci_read1(struct toshiba_acpi_dev *dev, u32 reg,
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u32 *out1, u32 *result)
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{
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u32 in[HCI_WORDS] = { HCI_GET, reg, 0, 0, 0, 0 };
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u32 out[HCI_WORDS];
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acpi_status status = hci_raw(dev, in, out);
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*out1 = out[2];
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*result = (status == AE_OK) ? out[0] : HCI_FAILURE;
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return status;
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}
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static acpi_status hci_write2(struct toshiba_acpi_dev *dev, u32 reg,
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u32 in1, u32 in2, u32 *result)
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{
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u32 in[HCI_WORDS] = { HCI_SET, reg, in1, in2, 0, 0 };
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u32 out[HCI_WORDS];
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acpi_status status = hci_raw(dev, in, out);
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*result = (status == AE_OK) ? out[0] : HCI_FAILURE;
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return status;
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}
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static acpi_status hci_read2(struct toshiba_acpi_dev *dev, u32 reg,
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u32 *out1, u32 *out2, u32 *result)
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{
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u32 in[HCI_WORDS] = { HCI_GET, reg, *out1, *out2, 0, 0 };
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u32 out[HCI_WORDS];
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acpi_status status = hci_raw(dev, in, out);
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*out1 = out[2];
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*out2 = out[3];
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*result = (status == AE_OK) ? out[0] : HCI_FAILURE;
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return status;
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}
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/* Illumination support */
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static int toshiba_illumination_available(struct toshiba_acpi_dev *dev)
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{
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u32 in[HCI_WORDS] = { 0, 0, 0, 0, 0, 0 };
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u32 out[HCI_WORDS];
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acpi_status status;
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in[0] = 0xf100;
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status = hci_raw(dev, in, out);
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if (ACPI_FAILURE(status)) {
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pr_info("Illumination device not available\n");
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return 0;
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}
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in[0] = 0xf400;
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status = hci_raw(dev, in, out);
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return 1;
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}
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static void toshiba_illumination_set(struct led_classdev *cdev,
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enum led_brightness brightness)
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{
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struct toshiba_acpi_dev *dev = container_of(cdev,
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struct toshiba_acpi_dev, led_dev);
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u32 in[HCI_WORDS] = { 0, 0, 0, 0, 0, 0 };
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u32 out[HCI_WORDS];
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acpi_status status;
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/* First request : initialize communication. */
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in[0] = 0xf100;
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status = hci_raw(dev, in, out);
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if (ACPI_FAILURE(status)) {
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pr_info("Illumination device not available\n");
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return;
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}
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if (brightness) {
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/* Switch the illumination on */
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in[0] = 0xf400;
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in[1] = 0x14e;
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in[2] = 1;
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status = hci_raw(dev, in, out);
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if (ACPI_FAILURE(status)) {
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pr_info("ACPI call for illumination failed\n");
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return;
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}
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} else {
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/* Switch the illumination off */
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in[0] = 0xf400;
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in[1] = 0x14e;
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in[2] = 0;
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status = hci_raw(dev, in, out);
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if (ACPI_FAILURE(status)) {
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pr_info("ACPI call for illumination failed.\n");
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return;
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}
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}
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/* Last request : close communication. */
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in[0] = 0xf200;
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in[1] = 0;
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in[2] = 0;
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hci_raw(dev, in, out);
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}
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static enum led_brightness toshiba_illumination_get(struct led_classdev *cdev)
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{
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struct toshiba_acpi_dev *dev = container_of(cdev,
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struct toshiba_acpi_dev, led_dev);
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u32 in[HCI_WORDS] = { 0, 0, 0, 0, 0, 0 };
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u32 out[HCI_WORDS];
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acpi_status status;
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enum led_brightness result;
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/*Â First request : initialize communication. */
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in[0] = 0xf100;
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status = hci_raw(dev, in, out);
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if (ACPI_FAILURE(status)) {
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pr_info("Illumination device not available\n");
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return LED_OFF;
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}
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/* Check the illumination */
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in[0] = 0xf300;
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in[1] = 0x14e;
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status = hci_raw(dev, in, out);
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if (ACPI_FAILURE(status)) {
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pr_info("ACPI call for illumination failed.\n");
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return LED_OFF;
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}
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result = out[2] ? LED_FULL : LED_OFF;
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/* Last request : close communication. */
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in[0] = 0xf200;
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in[1] = 0;
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in[2] = 0;
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hci_raw(dev, in, out);
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|
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return result;
|
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}
|
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|
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/* Bluetooth rfkill handlers */
|
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static u32 hci_get_bt_present(struct toshiba_acpi_dev *dev, bool *present)
|
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{
|
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u32 hci_result;
|
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u32 value, value2;
|
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|
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value = 0;
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value2 = 0;
|
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hci_read2(dev, HCI_WIRELESS, &value, &value2, &hci_result);
|
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if (hci_result == HCI_SUCCESS)
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*present = (value & HCI_WIRELESS_BT_PRESENT) ? true : false;
|
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|
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return hci_result;
|
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}
|
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|
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static u32 hci_get_radio_state(struct toshiba_acpi_dev *dev, bool *radio_state)
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{
|
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u32 hci_result;
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u32 value, value2;
|
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|
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value = 0;
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value2 = 0x0001;
|
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hci_read2(dev, HCI_WIRELESS, &value, &value2, &hci_result);
|
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|
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*radio_state = value & HCI_WIRELESS_KILL_SWITCH;
|
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return hci_result;
|
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}
|
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|
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static int bt_rfkill_set_block(void *data, bool blocked)
|
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{
|
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struct toshiba_acpi_dev *dev = data;
|
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u32 result1, result2;
|
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u32 value;
|
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int err;
|
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bool radio_state;
|
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|
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value = (blocked == false);
|
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|
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mutex_lock(&dev->mutex);
|
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if (hci_get_radio_state(dev, &radio_state) != HCI_SUCCESS) {
|
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err = -EIO;
|
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goto out;
|
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}
|
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|
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if (!radio_state) {
|
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err = 0;
|
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goto out;
|
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}
|
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|
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hci_write2(dev, HCI_WIRELESS, value, HCI_WIRELESS_BT_POWER, &result1);
|
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hci_write2(dev, HCI_WIRELESS, value, HCI_WIRELESS_BT_ATTACH, &result2);
|
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|
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if (result1 != HCI_SUCCESS || result2 != HCI_SUCCESS)
|
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err = -EIO;
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else
|
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err = 0;
|
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out:
|
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mutex_unlock(&dev->mutex);
|
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return err;
|
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}
|
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|
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static void bt_rfkill_poll(struct rfkill *rfkill, void *data)
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{
|
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bool new_rfk_state;
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bool value;
|
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u32 hci_result;
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struct toshiba_acpi_dev *dev = data;
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|
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mutex_lock(&dev->mutex);
|
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|
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hci_result = hci_get_radio_state(dev, &value);
|
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if (hci_result != HCI_SUCCESS) {
|
||
/* Can't do anything useful */
|
||
mutex_unlock(&dev->mutex);
|
||
return;
|
||
}
|
||
|
||
new_rfk_state = value;
|
||
|
||
mutex_unlock(&dev->mutex);
|
||
|
||
if (rfkill_set_hw_state(rfkill, !new_rfk_state))
|
||
bt_rfkill_set_block(data, true);
|
||
}
|
||
|
||
static const struct rfkill_ops toshiba_rfk_ops = {
|
||
.set_block = bt_rfkill_set_block,
|
||
.poll = bt_rfkill_poll,
|
||
};
|
||
|
||
static struct proc_dir_entry *toshiba_proc_dir /*= 0*/ ;
|
||
|
||
static int get_lcd(struct backlight_device *bd)
|
||
{
|
||
struct toshiba_acpi_dev *dev = bl_get_data(bd);
|
||
u32 hci_result;
|
||
u32 value;
|
||
|
||
hci_read1(dev, HCI_LCD_BRIGHTNESS, &value, &hci_result);
|
||
if (hci_result == HCI_SUCCESS)
|
||
return (value >> HCI_LCD_BRIGHTNESS_SHIFT);
|
||
|
||
return -EIO;
|
||
}
|
||
|
||
static int lcd_proc_show(struct seq_file *m, void *v)
|
||
{
|
||
struct toshiba_acpi_dev *dev = m->private;
|
||
int value;
|
||
|
||
if (!dev->backlight_dev)
|
||
return -ENODEV;
|
||
|
||
value = get_lcd(dev->backlight_dev);
|
||
if (value >= 0) {
|
||
seq_printf(m, "brightness: %d\n", value);
|
||
seq_printf(m, "brightness_levels: %d\n",
|
||
HCI_LCD_BRIGHTNESS_LEVELS);
|
||
return 0;
|
||
}
|
||
|
||
pr_err("Error reading LCD brightness\n");
|
||
return -EIO;
|
||
}
|
||
|
||
static int lcd_proc_open(struct inode *inode, struct file *file)
|
||
{
|
||
return single_open(file, lcd_proc_show, PDE(inode)->data);
|
||
}
|
||
|
||
static int set_lcd(struct toshiba_acpi_dev *dev, int value)
|
||
{
|
||
u32 hci_result;
|
||
|
||
value = value << HCI_LCD_BRIGHTNESS_SHIFT;
|
||
hci_write1(dev, HCI_LCD_BRIGHTNESS, value, &hci_result);
|
||
return hci_result == HCI_SUCCESS ? 0 : -EIO;
|
||
}
|
||
|
||
static int set_lcd_status(struct backlight_device *bd)
|
||
{
|
||
struct toshiba_acpi_dev *dev = bl_get_data(bd);
|
||
return set_lcd(dev, bd->props.brightness);
|
||
}
|
||
|
||
static ssize_t lcd_proc_write(struct file *file, const char __user *buf,
|
||
size_t count, loff_t *pos)
|
||
{
|
||
struct toshiba_acpi_dev *dev = PDE(file->f_path.dentry->d_inode)->data;
|
||
char cmd[42];
|
||
size_t len;
|
||
int value;
|
||
int ret;
|
||
|
||
len = min(count, sizeof(cmd) - 1);
|
||
if (copy_from_user(cmd, buf, len))
|
||
return -EFAULT;
|
||
cmd[len] = '\0';
|
||
|
||
if (sscanf(cmd, " brightness : %i", &value) == 1 &&
|
||
value >= 0 && value < HCI_LCD_BRIGHTNESS_LEVELS) {
|
||
ret = set_lcd(dev, value);
|
||
if (ret == 0)
|
||
ret = count;
|
||
} else {
|
||
ret = -EINVAL;
|
||
}
|
||
return ret;
|
||
}
|
||
|
||
static const struct file_operations lcd_proc_fops = {
|
||
.owner = THIS_MODULE,
|
||
.open = lcd_proc_open,
|
||
.read = seq_read,
|
||
.llseek = seq_lseek,
|
||
.release = single_release,
|
||
.write = lcd_proc_write,
|
||
};
|
||
|
||
static int get_video_status(struct toshiba_acpi_dev *dev, u32 *status)
|
||
{
|
||
u32 hci_result;
|
||
|
||
hci_read1(dev, HCI_VIDEO_OUT, status, &hci_result);
|
||
return hci_result == HCI_SUCCESS ? 0 : -EIO;
|
||
}
|
||
|
||
static int video_proc_show(struct seq_file *m, void *v)
|
||
{
|
||
struct toshiba_acpi_dev *dev = m->private;
|
||
u32 value;
|
||
int ret;
|
||
|
||
ret = get_video_status(dev, &value);
|
||
if (!ret) {
|
||
int is_lcd = (value & HCI_VIDEO_OUT_LCD) ? 1 : 0;
|
||
int is_crt = (value & HCI_VIDEO_OUT_CRT) ? 1 : 0;
|
||
int is_tv = (value & HCI_VIDEO_OUT_TV) ? 1 : 0;
|
||
seq_printf(m, "lcd_out: %d\n", is_lcd);
|
||
seq_printf(m, "crt_out: %d\n", is_crt);
|
||
seq_printf(m, "tv_out: %d\n", is_tv);
|
||
}
|
||
|
||
return ret;
|
||
}
|
||
|
||
static int video_proc_open(struct inode *inode, struct file *file)
|
||
{
|
||
return single_open(file, video_proc_show, PDE(inode)->data);
|
||
}
|
||
|
||
static ssize_t video_proc_write(struct file *file, const char __user *buf,
|
||
size_t count, loff_t *pos)
|
||
{
|
||
struct toshiba_acpi_dev *dev = PDE(file->f_path.dentry->d_inode)->data;
|
||
char *cmd, *buffer;
|
||
int ret;
|
||
int value;
|
||
int remain = count;
|
||
int lcd_out = -1;
|
||
int crt_out = -1;
|
||
int tv_out = -1;
|
||
u32 video_out;
|
||
|
||
cmd = kmalloc(count + 1, GFP_KERNEL);
|
||
if (!cmd)
|
||
return -ENOMEM;
|
||
if (copy_from_user(cmd, buf, count)) {
|
||
kfree(cmd);
|
||
return -EFAULT;
|
||
}
|
||
cmd[count] = '\0';
|
||
|
||
buffer = cmd;
|
||
|
||
/* scan expression. Multiple expressions may be delimited with ;
|
||
*
|
||
* NOTE: to keep scanning simple, invalid fields are ignored
|
||
*/
|
||
while (remain) {
|
||
if (sscanf(buffer, " lcd_out : %i", &value) == 1)
|
||
lcd_out = value & 1;
|
||
else if (sscanf(buffer, " crt_out : %i", &value) == 1)
|
||
crt_out = value & 1;
|
||
else if (sscanf(buffer, " tv_out : %i", &value) == 1)
|
||
tv_out = value & 1;
|
||
/* advance to one character past the next ; */
|
||
do {
|
||
++buffer;
|
||
--remain;
|
||
}
|
||
while (remain && *(buffer - 1) != ';');
|
||
}
|
||
|
||
kfree(cmd);
|
||
|
||
ret = get_video_status(dev, &video_out);
|
||
if (!ret) {
|
||
unsigned int new_video_out = video_out;
|
||
if (lcd_out != -1)
|
||
_set_bit(&new_video_out, HCI_VIDEO_OUT_LCD, lcd_out);
|
||
if (crt_out != -1)
|
||
_set_bit(&new_video_out, HCI_VIDEO_OUT_CRT, crt_out);
|
||
if (tv_out != -1)
|
||
_set_bit(&new_video_out, HCI_VIDEO_OUT_TV, tv_out);
|
||
/* To avoid unnecessary video disruption, only write the new
|
||
* video setting if something changed. */
|
||
if (new_video_out != video_out)
|
||
ret = write_acpi_int(METHOD_VIDEO_OUT, new_video_out);
|
||
}
|
||
|
||
return ret ? ret : count;
|
||
}
|
||
|
||
static const struct file_operations video_proc_fops = {
|
||
.owner = THIS_MODULE,
|
||
.open = video_proc_open,
|
||
.read = seq_read,
|
||
.llseek = seq_lseek,
|
||
.release = single_release,
|
||
.write = video_proc_write,
|
||
};
|
||
|
||
static int get_fan_status(struct toshiba_acpi_dev *dev, u32 *status)
|
||
{
|
||
u32 hci_result;
|
||
|
||
hci_read1(dev, HCI_FAN, status, &hci_result);
|
||
return hci_result == HCI_SUCCESS ? 0 : -EIO;
|
||
}
|
||
|
||
static int fan_proc_show(struct seq_file *m, void *v)
|
||
{
|
||
struct toshiba_acpi_dev *dev = m->private;
|
||
int ret;
|
||
u32 value;
|
||
|
||
ret = get_fan_status(dev, &value);
|
||
if (!ret) {
|
||
seq_printf(m, "running: %d\n", (value > 0));
|
||
seq_printf(m, "force_on: %d\n", dev->force_fan);
|
||
}
|
||
|
||
return ret;
|
||
}
|
||
|
||
static int fan_proc_open(struct inode *inode, struct file *file)
|
||
{
|
||
return single_open(file, fan_proc_show, PDE(inode)->data);
|
||
}
|
||
|
||
static ssize_t fan_proc_write(struct file *file, const char __user *buf,
|
||
size_t count, loff_t *pos)
|
||
{
|
||
struct toshiba_acpi_dev *dev = PDE(file->f_path.dentry->d_inode)->data;
|
||
char cmd[42];
|
||
size_t len;
|
||
int value;
|
||
u32 hci_result;
|
||
|
||
len = min(count, sizeof(cmd) - 1);
|
||
if (copy_from_user(cmd, buf, len))
|
||
return -EFAULT;
|
||
cmd[len] = '\0';
|
||
|
||
if (sscanf(cmd, " force_on : %i", &value) == 1 &&
|
||
value >= 0 && value <= 1) {
|
||
hci_write1(dev, HCI_FAN, value, &hci_result);
|
||
if (hci_result != HCI_SUCCESS)
|
||
return -EIO;
|
||
else
|
||
dev->force_fan = value;
|
||
} else {
|
||
return -EINVAL;
|
||
}
|
||
|
||
return count;
|
||
}
|
||
|
||
static const struct file_operations fan_proc_fops = {
|
||
.owner = THIS_MODULE,
|
||
.open = fan_proc_open,
|
||
.read = seq_read,
|
||
.llseek = seq_lseek,
|
||
.release = single_release,
|
||
.write = fan_proc_write,
|
||
};
|
||
|
||
static int keys_proc_show(struct seq_file *m, void *v)
|
||
{
|
||
struct toshiba_acpi_dev *dev = m->private;
|
||
u32 hci_result;
|
||
u32 value;
|
||
|
||
if (!dev->key_event_valid && dev->system_event_supported) {
|
||
hci_read1(dev, HCI_SYSTEM_EVENT, &value, &hci_result);
|
||
if (hci_result == HCI_SUCCESS) {
|
||
dev->key_event_valid = 1;
|
||
dev->last_key_event = value;
|
||
} else if (hci_result == HCI_EMPTY) {
|
||
/* better luck next time */
|
||
} else if (hci_result == HCI_NOT_SUPPORTED) {
|
||
/* This is a workaround for an unresolved issue on
|
||
* some machines where system events sporadically
|
||
* become disabled. */
|
||
hci_write1(dev, HCI_SYSTEM_EVENT, 1, &hci_result);
|
||
pr_notice("Re-enabled hotkeys\n");
|
||
} else {
|
||
pr_err("Error reading hotkey status\n");
|
||
return -EIO;
|
||
}
|
||
}
|
||
|
||
seq_printf(m, "hotkey_ready: %d\n", dev->key_event_valid);
|
||
seq_printf(m, "hotkey: 0x%04x\n", dev->last_key_event);
|
||
return 0;
|
||
}
|
||
|
||
static int keys_proc_open(struct inode *inode, struct file *file)
|
||
{
|
||
return single_open(file, keys_proc_show, PDE(inode)->data);
|
||
}
|
||
|
||
static ssize_t keys_proc_write(struct file *file, const char __user *buf,
|
||
size_t count, loff_t *pos)
|
||
{
|
||
struct toshiba_acpi_dev *dev = PDE(file->f_path.dentry->d_inode)->data;
|
||
char cmd[42];
|
||
size_t len;
|
||
int value;
|
||
|
||
len = min(count, sizeof(cmd) - 1);
|
||
if (copy_from_user(cmd, buf, len))
|
||
return -EFAULT;
|
||
cmd[len] = '\0';
|
||
|
||
if (sscanf(cmd, " hotkey_ready : %i", &value) == 1 && value == 0) {
|
||
dev->key_event_valid = 0;
|
||
} else {
|
||
return -EINVAL;
|
||
}
|
||
|
||
return count;
|
||
}
|
||
|
||
static const struct file_operations keys_proc_fops = {
|
||
.owner = THIS_MODULE,
|
||
.open = keys_proc_open,
|
||
.read = seq_read,
|
||
.llseek = seq_lseek,
|
||
.release = single_release,
|
||
.write = keys_proc_write,
|
||
};
|
||
|
||
static int version_proc_show(struct seq_file *m, void *v)
|
||
{
|
||
seq_printf(m, "driver: %s\n", TOSHIBA_ACPI_VERSION);
|
||
seq_printf(m, "proc_interface: %d\n", PROC_INTERFACE_VERSION);
|
||
return 0;
|
||
}
|
||
|
||
static int version_proc_open(struct inode *inode, struct file *file)
|
||
{
|
||
return single_open(file, version_proc_show, PDE(inode)->data);
|
||
}
|
||
|
||
static const struct file_operations version_proc_fops = {
|
||
.owner = THIS_MODULE,
|
||
.open = version_proc_open,
|
||
.read = seq_read,
|
||
.llseek = seq_lseek,
|
||
.release = single_release,
|
||
};
|
||
|
||
/* proc and module init
|
||
*/
|
||
|
||
#define PROC_TOSHIBA "toshiba"
|
||
|
||
static void __devinit
|
||
create_toshiba_proc_entries(struct toshiba_acpi_dev *dev)
|
||
{
|
||
if (dev->backlight_dev)
|
||
proc_create_data("lcd", S_IRUGO | S_IWUSR, toshiba_proc_dir,
|
||
&lcd_proc_fops, dev);
|
||
if (dev->video_supported)
|
||
proc_create_data("video", S_IRUGO | S_IWUSR, toshiba_proc_dir,
|
||
&video_proc_fops, dev);
|
||
if (dev->fan_supported)
|
||
proc_create_data("fan", S_IRUGO | S_IWUSR, toshiba_proc_dir,
|
||
&fan_proc_fops, dev);
|
||
if (dev->hotkey_dev)
|
||
proc_create_data("keys", S_IRUGO | S_IWUSR, toshiba_proc_dir,
|
||
&keys_proc_fops, dev);
|
||
proc_create_data("version", S_IRUGO, toshiba_proc_dir,
|
||
&version_proc_fops, dev);
|
||
}
|
||
|
||
static void remove_toshiba_proc_entries(struct toshiba_acpi_dev *dev)
|
||
{
|
||
if (dev->backlight_dev)
|
||
remove_proc_entry("lcd", toshiba_proc_dir);
|
||
if (dev->video_supported)
|
||
remove_proc_entry("video", toshiba_proc_dir);
|
||
if (dev->fan_supported)
|
||
remove_proc_entry("fan", toshiba_proc_dir);
|
||
if (dev->hotkey_dev)
|
||
remove_proc_entry("keys", toshiba_proc_dir);
|
||
remove_proc_entry("version", toshiba_proc_dir);
|
||
}
|
||
|
||
static const struct backlight_ops toshiba_backlight_data = {
|
||
.get_brightness = get_lcd,
|
||
.update_status = set_lcd_status,
|
||
};
|
||
|
||
static bool toshiba_acpi_i8042_filter(unsigned char data, unsigned char str,
|
||
struct serio *port)
|
||
{
|
||
if (str & 0x20)
|
||
return false;
|
||
|
||
if (unlikely(data == 0xe0))
|
||
return false;
|
||
|
||
if ((data & 0x7f) == TOS1900_FN_SCAN) {
|
||
schedule_work(&toshiba_acpi->hotkey_work);
|
||
return true;
|
||
}
|
||
|
||
return false;
|
||
}
|
||
|
||
static void toshiba_acpi_hotkey_work(struct work_struct *work)
|
||
{
|
||
acpi_handle ec_handle = ec_get_handle();
|
||
acpi_status status;
|
||
|
||
if (!ec_handle)
|
||
return;
|
||
|
||
status = acpi_evaluate_object(ec_handle, "NTFY", NULL, NULL);
|
||
if (ACPI_FAILURE(status))
|
||
pr_err("ACPI NTFY method execution failed\n");
|
||
}
|
||
|
||
/*
|
||
* Returns hotkey scancode, or < 0 on failure.
|
||
*/
|
||
static int toshiba_acpi_query_hotkey(struct toshiba_acpi_dev *dev)
|
||
{
|
||
struct acpi_buffer buf;
|
||
union acpi_object out_obj;
|
||
acpi_status status;
|
||
|
||
buf.pointer = &out_obj;
|
||
buf.length = sizeof(out_obj);
|
||
|
||
status = acpi_evaluate_object(dev->acpi_dev->handle, "INFO",
|
||
NULL, &buf);
|
||
if (ACPI_FAILURE(status) || out_obj.type != ACPI_TYPE_INTEGER) {
|
||
pr_err("ACPI INFO method execution failed\n");
|
||
return -EIO;
|
||
}
|
||
|
||
return out_obj.integer.value;
|
||
}
|
||
|
||
static void toshiba_acpi_report_hotkey(struct toshiba_acpi_dev *dev,
|
||
int scancode)
|
||
{
|
||
if (scancode == 0x100)
|
||
return;
|
||
|
||
/* act on key press; ignore key release */
|
||
if (scancode & 0x80)
|
||
return;
|
||
|
||
if (!sparse_keymap_report_event(dev->hotkey_dev, scancode, 1, true))
|
||
pr_info("Unknown key %x\n", scancode);
|
||
}
|
||
|
||
static int __devinit toshiba_acpi_setup_keyboard(struct toshiba_acpi_dev *dev)
|
||
{
|
||
acpi_status status;
|
||
acpi_handle ec_handle, handle;
|
||
int error;
|
||
u32 hci_result;
|
||
|
||
dev->hotkey_dev = input_allocate_device();
|
||
if (!dev->hotkey_dev) {
|
||
pr_info("Unable to register input device\n");
|
||
return -ENOMEM;
|
||
}
|
||
|
||
dev->hotkey_dev->name = "Toshiba input device";
|
||
dev->hotkey_dev->phys = "toshiba_acpi/input0";
|
||
dev->hotkey_dev->id.bustype = BUS_HOST;
|
||
|
||
error = sparse_keymap_setup(dev->hotkey_dev, toshiba_acpi_keymap, NULL);
|
||
if (error)
|
||
goto err_free_dev;
|
||
|
||
/*
|
||
* For some machines the SCI responsible for providing hotkey
|
||
* notification doesn't fire. We can trigger the notification
|
||
* whenever the Fn key is pressed using the NTFY method, if
|
||
* supported, so if it's present set up an i8042 key filter
|
||
* for this purpose.
|
||
*/
|
||
status = AE_ERROR;
|
||
ec_handle = ec_get_handle();
|
||
if (ec_handle)
|
||
status = acpi_get_handle(ec_handle, "NTFY", &handle);
|
||
|
||
if (ACPI_SUCCESS(status)) {
|
||
INIT_WORK(&dev->hotkey_work, toshiba_acpi_hotkey_work);
|
||
|
||
error = i8042_install_filter(toshiba_acpi_i8042_filter);
|
||
if (error) {
|
||
pr_err("Error installing key filter\n");
|
||
goto err_free_keymap;
|
||
}
|
||
|
||
dev->ntfy_supported = 1;
|
||
}
|
||
|
||
/*
|
||
* Determine hotkey query interface. Prefer using the INFO
|
||
* method when it is available.
|
||
*/
|
||
status = acpi_get_handle(dev->acpi_dev->handle, "INFO", &handle);
|
||
if (ACPI_SUCCESS(status)) {
|
||
dev->info_supported = 1;
|
||
} else {
|
||
hci_write1(dev, HCI_SYSTEM_EVENT, 1, &hci_result);
|
||
if (hci_result == HCI_SUCCESS)
|
||
dev->system_event_supported = 1;
|
||
}
|
||
|
||
if (!dev->info_supported && !dev->system_event_supported) {
|
||
pr_warn("No hotkey query interface found\n");
|
||
goto err_remove_filter;
|
||
}
|
||
|
||
status = acpi_evaluate_object(dev->acpi_dev->handle, "ENAB", NULL, NULL);
|
||
if (ACPI_FAILURE(status)) {
|
||
pr_info("Unable to enable hotkeys\n");
|
||
error = -ENODEV;
|
||
goto err_remove_filter;
|
||
}
|
||
|
||
error = input_register_device(dev->hotkey_dev);
|
||
if (error) {
|
||
pr_info("Unable to register input device\n");
|
||
goto err_remove_filter;
|
||
}
|
||
|
||
hci_write1(dev, HCI_HOTKEY_EVENT, HCI_HOTKEY_ENABLE, &hci_result);
|
||
return 0;
|
||
|
||
err_remove_filter:
|
||
if (dev->ntfy_supported)
|
||
i8042_remove_filter(toshiba_acpi_i8042_filter);
|
||
err_free_keymap:
|
||
sparse_keymap_free(dev->hotkey_dev);
|
||
err_free_dev:
|
||
input_free_device(dev->hotkey_dev);
|
||
dev->hotkey_dev = NULL;
|
||
return error;
|
||
}
|
||
|
||
static int toshiba_acpi_remove(struct acpi_device *acpi_dev, int type)
|
||
{
|
||
struct toshiba_acpi_dev *dev = acpi_driver_data(acpi_dev);
|
||
|
||
remove_toshiba_proc_entries(dev);
|
||
|
||
if (dev->ntfy_supported) {
|
||
i8042_remove_filter(toshiba_acpi_i8042_filter);
|
||
cancel_work_sync(&dev->hotkey_work);
|
||
}
|
||
|
||
if (dev->hotkey_dev) {
|
||
input_unregister_device(dev->hotkey_dev);
|
||
sparse_keymap_free(dev->hotkey_dev);
|
||
}
|
||
|
||
if (dev->bt_rfk) {
|
||
rfkill_unregister(dev->bt_rfk);
|
||
rfkill_destroy(dev->bt_rfk);
|
||
}
|
||
|
||
if (dev->backlight_dev)
|
||
backlight_device_unregister(dev->backlight_dev);
|
||
|
||
if (dev->illumination_supported)
|
||
led_classdev_unregister(&dev->led_dev);
|
||
|
||
if (toshiba_acpi)
|
||
toshiba_acpi = NULL;
|
||
|
||
kfree(dev);
|
||
|
||
return 0;
|
||
}
|
||
|
||
static const char * __devinit find_hci_method(acpi_handle handle)
|
||
{
|
||
acpi_status status;
|
||
acpi_handle hci_handle;
|
||
|
||
status = acpi_get_handle(handle, "GHCI", &hci_handle);
|
||
if (ACPI_SUCCESS(status))
|
||
return "GHCI";
|
||
|
||
status = acpi_get_handle(handle, "SPFC", &hci_handle);
|
||
if (ACPI_SUCCESS(status))
|
||
return "SPFC";
|
||
|
||
return NULL;
|
||
}
|
||
|
||
static int __devinit toshiba_acpi_add(struct acpi_device *acpi_dev)
|
||
{
|
||
struct toshiba_acpi_dev *dev;
|
||
const char *hci_method;
|
||
u32 dummy;
|
||
bool bt_present;
|
||
int ret = 0;
|
||
struct backlight_properties props;
|
||
|
||
if (toshiba_acpi)
|
||
return -EBUSY;
|
||
|
||
pr_info("Toshiba Laptop ACPI Extras version %s\n",
|
||
TOSHIBA_ACPI_VERSION);
|
||
|
||
hci_method = find_hci_method(acpi_dev->handle);
|
||
if (!hci_method) {
|
||
pr_err("HCI interface not found\n");
|
||
return -ENODEV;
|
||
}
|
||
|
||
dev = kzalloc(sizeof(*dev), GFP_KERNEL);
|
||
if (!dev)
|
||
return -ENOMEM;
|
||
dev->acpi_dev = acpi_dev;
|
||
dev->method_hci = hci_method;
|
||
acpi_dev->driver_data = dev;
|
||
|
||
if (toshiba_acpi_setup_keyboard(dev))
|
||
pr_info("Unable to activate hotkeys\n");
|
||
|
||
mutex_init(&dev->mutex);
|
||
|
||
props.type = BACKLIGHT_PLATFORM;
|
||
props.max_brightness = HCI_LCD_BRIGHTNESS_LEVELS - 1;
|
||
dev->backlight_dev = backlight_device_register("toshiba",
|
||
&acpi_dev->dev,
|
||
dev,
|
||
&toshiba_backlight_data,
|
||
&props);
|
||
if (IS_ERR(dev->backlight_dev)) {
|
||
ret = PTR_ERR(dev->backlight_dev);
|
||
|
||
pr_err("Could not register toshiba backlight device\n");
|
||
dev->backlight_dev = NULL;
|
||
goto error;
|
||
}
|
||
dev->backlight_dev->props.brightness = get_lcd(dev->backlight_dev);
|
||
|
||
/* Register rfkill switch for Bluetooth */
|
||
if (hci_get_bt_present(dev, &bt_present) == HCI_SUCCESS && bt_present) {
|
||
dev->bt_rfk = rfkill_alloc("Toshiba Bluetooth",
|
||
&acpi_dev->dev,
|
||
RFKILL_TYPE_BLUETOOTH,
|
||
&toshiba_rfk_ops,
|
||
dev);
|
||
if (!dev->bt_rfk) {
|
||
pr_err("unable to allocate rfkill device\n");
|
||
ret = -ENOMEM;
|
||
goto error;
|
||
}
|
||
|
||
ret = rfkill_register(dev->bt_rfk);
|
||
if (ret) {
|
||
pr_err("unable to register rfkill device\n");
|
||
rfkill_destroy(dev->bt_rfk);
|
||
goto error;
|
||
}
|
||
}
|
||
|
||
if (toshiba_illumination_available(dev)) {
|
||
dev->led_dev.name = "toshiba::illumination";
|
||
dev->led_dev.max_brightness = 1;
|
||
dev->led_dev.brightness_set = toshiba_illumination_set;
|
||
dev->led_dev.brightness_get = toshiba_illumination_get;
|
||
if (!led_classdev_register(&acpi_dev->dev, &dev->led_dev))
|
||
dev->illumination_supported = 1;
|
||
}
|
||
|
||
/* Determine whether or not BIOS supports fan and video interfaces */
|
||
|
||
ret = get_video_status(dev, &dummy);
|
||
dev->video_supported = !ret;
|
||
|
||
ret = get_fan_status(dev, &dummy);
|
||
dev->fan_supported = !ret;
|
||
|
||
create_toshiba_proc_entries(dev);
|
||
|
||
toshiba_acpi = dev;
|
||
|
||
return 0;
|
||
|
||
error:
|
||
toshiba_acpi_remove(acpi_dev, 0);
|
||
return ret;
|
||
}
|
||
|
||
static void toshiba_acpi_notify(struct acpi_device *acpi_dev, u32 event)
|
||
{
|
||
struct toshiba_acpi_dev *dev = acpi_driver_data(acpi_dev);
|
||
u32 hci_result, value;
|
||
int retries = 3;
|
||
int scancode;
|
||
|
||
if (event != 0x80)
|
||
return;
|
||
|
||
if (dev->info_supported) {
|
||
scancode = toshiba_acpi_query_hotkey(dev);
|
||
if (scancode < 0)
|
||
pr_err("Failed to query hotkey event\n");
|
||
else if (scancode != 0)
|
||
toshiba_acpi_report_hotkey(dev, scancode);
|
||
} else if (dev->system_event_supported) {
|
||
do {
|
||
hci_read1(dev, HCI_SYSTEM_EVENT, &value, &hci_result);
|
||
switch (hci_result) {
|
||
case HCI_SUCCESS:
|
||
toshiba_acpi_report_hotkey(dev, (int)value);
|
||
break;
|
||
case HCI_NOT_SUPPORTED:
|
||
/*
|
||
* This is a workaround for an unresolved
|
||
* issue on some machines where system events
|
||
* sporadically become disabled.
|
||
*/
|
||
hci_write1(dev, HCI_SYSTEM_EVENT, 1,
|
||
&hci_result);
|
||
pr_notice("Re-enabled hotkeys\n");
|
||
/* fall through */
|
||
default:
|
||
retries--;
|
||
break;
|
||
}
|
||
} while (retries && hci_result != HCI_EMPTY);
|
||
}
|
||
}
|
||
|
||
static int toshiba_acpi_suspend(struct acpi_device *acpi_dev,
|
||
pm_message_t state)
|
||
{
|
||
struct toshiba_acpi_dev *dev = acpi_driver_data(acpi_dev);
|
||
u32 result;
|
||
|
||
if (dev->hotkey_dev)
|
||
hci_write1(dev, HCI_HOTKEY_EVENT, HCI_HOTKEY_DISABLE, &result);
|
||
|
||
return 0;
|
||
}
|
||
|
||
static int toshiba_acpi_resume(struct acpi_device *acpi_dev)
|
||
{
|
||
struct toshiba_acpi_dev *dev = acpi_driver_data(acpi_dev);
|
||
u32 result;
|
||
|
||
if (dev->hotkey_dev)
|
||
hci_write1(dev, HCI_HOTKEY_EVENT, HCI_HOTKEY_ENABLE, &result);
|
||
|
||
return 0;
|
||
}
|
||
|
||
static struct acpi_driver toshiba_acpi_driver = {
|
||
.name = "Toshiba ACPI driver",
|
||
.owner = THIS_MODULE,
|
||
.ids = toshiba_device_ids,
|
||
.flags = ACPI_DRIVER_ALL_NOTIFY_EVENTS,
|
||
.ops = {
|
||
.add = toshiba_acpi_add,
|
||
.remove = toshiba_acpi_remove,
|
||
.notify = toshiba_acpi_notify,
|
||
.suspend = toshiba_acpi_suspend,
|
||
.resume = toshiba_acpi_resume,
|
||
},
|
||
};
|
||
|
||
static int __init toshiba_acpi_init(void)
|
||
{
|
||
int ret;
|
||
|
||
/*
|
||
* Machines with this WMI guid aren't supported due to bugs in
|
||
* their AML. This check relies on wmi initializing before
|
||
* toshiba_acpi to guarantee guids have been identified.
|
||
*/
|
||
if (wmi_has_guid(TOSHIBA_WMI_EVENT_GUID))
|
||
return -ENODEV;
|
||
|
||
toshiba_proc_dir = proc_mkdir(PROC_TOSHIBA, acpi_root_dir);
|
||
if (!toshiba_proc_dir) {
|
||
pr_err("Unable to create proc dir " PROC_TOSHIBA "\n");
|
||
return -ENODEV;
|
||
}
|
||
|
||
ret = acpi_bus_register_driver(&toshiba_acpi_driver);
|
||
if (ret) {
|
||
pr_err("Failed to register ACPI driver: %d\n", ret);
|
||
remove_proc_entry(PROC_TOSHIBA, acpi_root_dir);
|
||
}
|
||
|
||
return ret;
|
||
}
|
||
|
||
static void __exit toshiba_acpi_exit(void)
|
||
{
|
||
acpi_bus_unregister_driver(&toshiba_acpi_driver);
|
||
if (toshiba_proc_dir)
|
||
remove_proc_entry(PROC_TOSHIBA, acpi_root_dir);
|
||
}
|
||
|
||
module_init(toshiba_acpi_init);
|
||
module_exit(toshiba_acpi_exit);
|