// SPDX-License-Identifier: GPL-2.0-or-later
/*
 * Sony Programmable I/O Control Device driver for VAIO
 *
 * Copyright (C) 2007 Mattia Dongili <malattia@linux.it>
 *
 * Copyright (C) 2001-2005 Stelian Pop <stelian@popies.net>
 *
 * Copyright (C) 2005 Narayanan R S <nars@kadamba.org>
 *
 * Copyright (C) 2001-2002 Alcôve <www.alcove.com>
 *
 * Copyright (C) 2001 Michael Ashley <m.ashley@unsw.edu.au>
 *
 * Copyright (C) 2001 Junichi Morita <jun1m@mars.dti.ne.jp>
 *
 * Copyright (C) 2000 Takaya Kinjo <t-kinjo@tc4.so-net.ne.jp>
 *
 * Copyright (C) 2000 Andrew Tridgell <tridge@valinux.com>
 *
 * Earlier work by Werner Almesberger, Paul `Rusty' Russell and Paul Mackerras.
 */

#include <linux/module.h>
#include <linux/sched.h>
#include <linux/input.h>
#include <linux/pci.h>
#include <linux/init.h>
#include <linux/interrupt.h>
#include <linux/miscdevice.h>
#include <linux/poll.h>
#include <linux/delay.h>
#include <linux/wait.h>
#include <linux/acpi.h>
#include <linux/dmi.h>
#include <linux/err.h>
#include <linux/kfifo.h>
#include <linux/platform_device.h>
#include <linux/gfp.h>
#include <linux/string_choices.h>

#include <linux/uaccess.h>
#include <asm/io.h>

#include <linux/sonypi.h>

#define SONYPI_DRIVER_VERSION    "1.26"

MODULE_AUTHOR("Stelian Pop <stelian@popies.net>");
MODULE_DESCRIPTION("Sony Programmable I/O Control Device driver");
MODULE_LICENSE("GPL");
MODULE_VERSION(SONYPI_DRIVER_VERSION);

static int minor = -1;
module_param(minor, int, 0);
MODULE_PARM_DESC(minor,
                 "minor number of the misc device, default is -1 (automatic)");

static int verbose;             /* = 0 */
module_param(verbose, int, 0644);
MODULE_PARM_DESC(verbose, "be verbose, default is 0 (no)");

static int fnkeyinit;           /* = 0 */
module_param(fnkeyinit, int, 0444);
MODULE_PARM_DESC(fnkeyinit,
                 "set this if your Fn keys do not generate any event");

static int camera;              /* = 0 */
module_param(camera, int, 0444);
MODULE_PARM_DESC(camera,
                 "set this if you have a MotionEye camera (PictureBook series)");

static int compat;              /* = 0 */
module_param(compat, int, 0444);
MODULE_PARM_DESC(compat,
                 "set this if you want to enable backward compatibility mode");

static unsigned long mask = 0xffffffff;
module_param(mask, ulong, 0644);
MODULE_PARM_DESC(mask,
                 "set this to the mask of event you want to enable (see doc)");

static int useinput = 1;
module_param(useinput, int, 0444);
MODULE_PARM_DESC(useinput,
                 "set this if you would like sonypi to feed events to the input subsystem");

static int check_ioport = 1;
module_param(check_ioport, int, 0444);
MODULE_PARM_DESC(check_ioport,
                 "set this to 0 if you think the automatic ioport check for sony-laptop is wrong");

#define SONYPI_DEVICE_MODEL_TYPE1       1
#define SONYPI_DEVICE_MODEL_TYPE2       2
#define SONYPI_DEVICE_MODEL_TYPE3       3

/* type1 models use those */
#define SONYPI_IRQ_PORT                 0x8034
#define SONYPI_IRQ_SHIFT                22
#define SONYPI_TYPE1_BASE               0x50
#define SONYPI_G10A                     (SONYPI_TYPE1_BASE+0x14)
#define SONYPI_TYPE1_REGION_SIZE        0x08
#define SONYPI_TYPE1_EVTYPE_OFFSET      0x04

/* type2 series specifics */
#define SONYPI_SIRQ                     0x9b
#define SONYPI_SLOB                     0x9c
#define SONYPI_SHIB                     0x9d
#define SONYPI_TYPE2_REGION_SIZE        0x20
#define SONYPI_TYPE2_EVTYPE_OFFSET      0x12

/* type3 series specifics */
#define SONYPI_TYPE3_BASE               0x40
#define SONYPI_TYPE3_GID2               (SONYPI_TYPE3_BASE+0x48) /* 16 bits */
#define SONYPI_TYPE3_MISC               (SONYPI_TYPE3_BASE+0x6d) /* 8 bits  */
#define SONYPI_TYPE3_REGION_SIZE        0x20
#define SONYPI_TYPE3_EVTYPE_OFFSET      0x12

/* battery / brightness addresses */
#define SONYPI_BAT_FLAGS        0x81
#define SONYPI_LCD_LIGHT        0x96
#define SONYPI_BAT1_PCTRM       0xa0
#define SONYPI_BAT1_LEFT        0xa2
#define SONYPI_BAT1_MAXRT       0xa4
#define SONYPI_BAT2_PCTRM       0xa8
#define SONYPI_BAT2_LEFT        0xaa
#define SONYPI_BAT2_MAXRT       0xac
#define SONYPI_BAT1_MAXTK       0xb0
#define SONYPI_BAT1_FULL        0xb2
#define SONYPI_BAT2_MAXTK       0xb8
#define SONYPI_BAT2_FULL        0xba

/* FAN0 information (reverse engineered from ACPI tables) */
#define SONYPI_FAN0_STATUS      0x93
#define SONYPI_TEMP_STATUS      0xC1

/* ioports used for brightness and type2 events */
#define SONYPI_DATA_IOPORT      0x62
#define SONYPI_CST_IOPORT       0x66

/* The set of possible ioports */
struct sonypi_ioport_list {
        u16     port1;
        u16     port2;
};

static struct sonypi_ioport_list sonypi_type1_ioport_list[] = {
        { 0x10c0, 0x10c4 },     /* looks like the default on C1Vx */
        { 0x1080, 0x1084 },
        { 0x1090, 0x1094 },
        { 0x10a0, 0x10a4 },
        { 0x10b0, 0x10b4 },
        { 0x0, 0x0 }
};

static struct sonypi_ioport_list sonypi_type2_ioport_list[] = {
        { 0x1080, 0x1084 },
        { 0x10a0, 0x10a4 },
        { 0x10c0, 0x10c4 },
        { 0x10e0, 0x10e4 },
        { 0x0, 0x0 }
};

/* same as in type 2 models */
static struct sonypi_ioport_list *sonypi_type3_ioport_list =
        sonypi_type2_ioport_list;

/* The set of possible interrupts */
struct sonypi_irq_list {
        u16     irq;
        u16     bits;
};

static struct sonypi_irq_list sonypi_type1_irq_list[] = {
        { 11, 0x2 },    /* IRQ 11, GO22=0,GO23=1 in AML */
        { 10, 0x1 },    /* IRQ 10, GO22=1,GO23=0 in AML */
        {  5, 0x0 },    /* IRQ  5, GO22=0,GO23=0 in AML */
        {  0, 0x3 }     /* no IRQ, GO22=1,GO23=1 in AML */
};

static struct sonypi_irq_list sonypi_type2_irq_list[] = {
        { 11, 0x80 },   /* IRQ 11, 0x80 in SIRQ in AML */
        { 10, 0x40 },   /* IRQ 10, 0x40 in SIRQ in AML */
        {  9, 0x20 },   /* IRQ  9, 0x20 in SIRQ in AML */
        {  6, 0x10 },   /* IRQ  6, 0x10 in SIRQ in AML */
        {  0, 0x00 }    /* no IRQ, 0x00 in SIRQ in AML */
};

/* same as in type2 models */
static struct sonypi_irq_list *sonypi_type3_irq_list = sonypi_type2_irq_list;

#define SONYPI_CAMERA_BRIGHTNESS                0
#define SONYPI_CAMERA_CONTRAST                  1
#define SONYPI_CAMERA_HUE                       2
#define SONYPI_CAMERA_COLOR                     3
#define SONYPI_CAMERA_SHARPNESS                 4

#define SONYPI_CAMERA_PICTURE                   5
#define SONYPI_CAMERA_EXPOSURE_MASK             0xC
#define SONYPI_CAMERA_WHITE_BALANCE_MASK        0x3
#define SONYPI_CAMERA_PICTURE_MODE_MASK         0x30
#define SONYPI_CAMERA_MUTE_MASK                 0x40

/* the rest don't need a loop until not 0xff */
#define SONYPI_CAMERA_AGC                       6
#define SONYPI_CAMERA_AGC_MASK                  0x30
#define SONYPI_CAMERA_SHUTTER_MASK              0x7

#define SONYPI_CAMERA_SHUTDOWN_REQUEST          7
#define SONYPI_CAMERA_CONTROL                   0x10

#define SONYPI_CAMERA_STATUS                    7
#define SONYPI_CAMERA_STATUS_READY              0x2
#define SONYPI_CAMERA_STATUS_POSITION           0x4

#define SONYPI_DIRECTION_BACKWARDS              0x4

#define SONYPI_CAMERA_REVISION                  8
#define SONYPI_CAMERA_ROMVERSION                9

/* Event masks */
#define SONYPI_JOGGER_MASK                      0x00000001
#define SONYPI_CAPTURE_MASK                     0x00000002
#define SONYPI_FNKEY_MASK                       0x00000004
#define SONYPI_BLUETOOTH_MASK                   0x00000008
#define SONYPI_PKEY_MASK                        0x00000010
#define SONYPI_BACK_MASK                        0x00000020
#define SONYPI_HELP_MASK                        0x00000040
#define SONYPI_LID_MASK                         0x00000080
#define SONYPI_ZOOM_MASK                        0x00000100
#define SONYPI_THUMBPHRASE_MASK                 0x00000200
#define SONYPI_MEYE_MASK                        0x00000400
#define SONYPI_MEMORYSTICK_MASK                 0x00000800
#define SONYPI_BATTERY_MASK                     0x00001000
#define SONYPI_WIRELESS_MASK                    0x00002000

struct sonypi_event {
        u8      data;
        u8      event;
};

/* The set of possible button release events */
static struct sonypi_event sonypi_releaseev[] = {
        { 0x00, SONYPI_EVENT_ANYBUTTON_RELEASED },
        { 0, 0 }
};

/* The set of possible jogger events  */
static struct sonypi_event sonypi_joggerev[] = {
        { 0x1f, SONYPI_EVENT_JOGDIAL_UP },
        { 0x01, SONYPI_EVENT_JOGDIAL_DOWN },
        { 0x5f, SONYPI_EVENT_JOGDIAL_UP_PRESSED },
        { 0x41, SONYPI_EVENT_JOGDIAL_DOWN_PRESSED },
        { 0x1e, SONYPI_EVENT_JOGDIAL_FAST_UP },
        { 0x02, SONYPI_EVENT_JOGDIAL_FAST_DOWN },
        { 0x5e, SONYPI_EVENT_JOGDIAL_FAST_UP_PRESSED },
        { 0x42, SONYPI_EVENT_JOGDIAL_FAST_DOWN_PRESSED },
        { 0x1d, SONYPI_EVENT_JOGDIAL_VFAST_UP },
        { 0x03, SONYPI_EVENT_JOGDIAL_VFAST_DOWN },
        { 0x5d, SONYPI_EVENT_JOGDIAL_VFAST_UP_PRESSED },
        { 0x43, SONYPI_EVENT_JOGDIAL_VFAST_DOWN_PRESSED },
        { 0x40, SONYPI_EVENT_JOGDIAL_PRESSED },
        { 0, 0 }
};

/* The set of possible capture button events */
static struct sonypi_event sonypi_captureev[] = {
        { 0x05, SONYPI_EVENT_CAPTURE_PARTIALPRESSED },
        { 0x07, SONYPI_EVENT_CAPTURE_PRESSED },
        { 0x01, SONYPI_EVENT_CAPTURE_PARTIALRELEASED },
        { 0, 0 }
};

/* The set of possible fnkeys events */
static struct sonypi_event sonypi_fnkeyev[] = {
        { 0x10, SONYPI_EVENT_FNKEY_ESC },
        { 0x11, SONYPI_EVENT_FNKEY_F1 },
        { 0x12, SONYPI_EVENT_FNKEY_F2 },
        { 0x13, SONYPI_EVENT_FNKEY_F3 },
        { 0x14, SONYPI_EVENT_FNKEY_F4 },
        { 0x15, SONYPI_EVENT_FNKEY_F5 },
        { 0x16, SONYPI_EVENT_FNKEY_F6 },
        { 0x17, SONYPI_EVENT_FNKEY_F7 },
        { 0x18, SONYPI_EVENT_FNKEY_F8 },
        { 0x19, SONYPI_EVENT_FNKEY_F9 },
        { 0x1a, SONYPI_EVENT_FNKEY_F10 },
        { 0x1b, SONYPI_EVENT_FNKEY_F11 },
        { 0x1c, SONYPI_EVENT_FNKEY_F12 },
        { 0x1f, SONYPI_EVENT_FNKEY_RELEASED },
        { 0x21, SONYPI_EVENT_FNKEY_1 },
        { 0x22, SONYPI_EVENT_FNKEY_2 },
        { 0x31, SONYPI_EVENT_FNKEY_D },
        { 0x32, SONYPI_EVENT_FNKEY_E },
        { 0x33, SONYPI_EVENT_FNKEY_F },
        { 0x34, SONYPI_EVENT_FNKEY_S },
        { 0x35, SONYPI_EVENT_FNKEY_B },
        { 0x36, SONYPI_EVENT_FNKEY_ONLY },
        { 0, 0 }
};

/* The set of possible program key events */
static struct sonypi_event sonypi_pkeyev[] = {
        { 0x01, SONYPI_EVENT_PKEY_P1 },
        { 0x02, SONYPI_EVENT_PKEY_P2 },
        { 0x04, SONYPI_EVENT_PKEY_P3 },
        { 0x5c, SONYPI_EVENT_PKEY_P1 },
        { 0, 0 }
};

/* The set of possible bluetooth events */
static struct sonypi_event sonypi_blueev[] = {
        { 0x55, SONYPI_EVENT_BLUETOOTH_PRESSED },
        { 0x59, SONYPI_EVENT_BLUETOOTH_ON },
        { 0x5a, SONYPI_EVENT_BLUETOOTH_OFF },
        { 0, 0 }
};

/* The set of possible wireless events */
static struct sonypi_event sonypi_wlessev[] = {
        { 0x59, SONYPI_EVENT_WIRELESS_ON },
        { 0x5a, SONYPI_EVENT_WIRELESS_OFF },
        { 0, 0 }
};

/* The set of possible back button events */
static struct sonypi_event sonypi_backev[] = {
        { 0x20, SONYPI_EVENT_BACK_PRESSED },
        { 0, 0 }
};

/* The set of possible help button events */
static struct sonypi_event sonypi_helpev[] = {
        { 0x3b, SONYPI_EVENT_HELP_PRESSED },
        { 0, 0 }
};


/* The set of possible lid events */
static struct sonypi_event sonypi_lidev[] = {
        { 0x51, SONYPI_EVENT_LID_CLOSED },
        { 0x50, SONYPI_EVENT_LID_OPENED },
        { 0, 0 }
};

/* The set of possible zoom events */
static struct sonypi_event sonypi_zoomev[] = {
        { 0x39, SONYPI_EVENT_ZOOM_PRESSED },
        { 0, 0 }
};

/* The set of possible thumbphrase events */
static struct sonypi_event sonypi_thumbphraseev[] = {
        { 0x3a, SONYPI_EVENT_THUMBPHRASE_PRESSED },
        { 0, 0 }
};

/* The set of possible motioneye camera events */
static struct sonypi_event sonypi_meyeev[] = {
        { 0x00, SONYPI_EVENT_MEYE_FACE },
        { 0x01, SONYPI_EVENT_MEYE_OPPOSITE },
        { 0, 0 }
};

/* The set of possible memorystick events */
static struct sonypi_event sonypi_memorystickev[] = {
        { 0x53, SONYPI_EVENT_MEMORYSTICK_INSERT },
        { 0x54, SONYPI_EVENT_MEMORYSTICK_EJECT },
        { 0, 0 }
};

/* The set of possible battery events */
static struct sonypi_event sonypi_batteryev[] = {
        { 0x20, SONYPI_EVENT_BATTERY_INSERT },
        { 0x30, SONYPI_EVENT_BATTERY_REMOVE },
        { 0, 0 }
};

static struct sonypi_eventtypes {
        int                     model;
        u8                      data;
        unsigned long           mask;
        struct sonypi_event *   events;
} sonypi_eventtypes[] = {
        { SONYPI_DEVICE_MODEL_TYPE1, 0, 0xffffffff, sonypi_releaseev },
        { SONYPI_DEVICE_MODEL_TYPE1, 0x70, SONYPI_MEYE_MASK, sonypi_meyeev },
        { SONYPI_DEVICE_MODEL_TYPE1, 0x30, SONYPI_LID_MASK, sonypi_lidev },
        { SONYPI_DEVICE_MODEL_TYPE1, 0x60, SONYPI_CAPTURE_MASK, sonypi_captureev },
        { SONYPI_DEVICE_MODEL_TYPE1, 0x10, SONYPI_JOGGER_MASK, sonypi_joggerev },
        { SONYPI_DEVICE_MODEL_TYPE1, 0x20, SONYPI_FNKEY_MASK, sonypi_fnkeyev },
        { SONYPI_DEVICE_MODEL_TYPE1, 0x30, SONYPI_BLUETOOTH_MASK, sonypi_blueev },
        { SONYPI_DEVICE_MODEL_TYPE1, 0x40, SONYPI_PKEY_MASK, sonypi_pkeyev },
        { SONYPI_DEVICE_MODEL_TYPE1, 0x30, SONYPI_MEMORYSTICK_MASK, sonypi_memorystickev },
        { SONYPI_DEVICE_MODEL_TYPE1, 0x40, SONYPI_BATTERY_MASK, sonypi_batteryev },

        { SONYPI_DEVICE_MODEL_TYPE2, 0, 0xffffffff, sonypi_releaseev },
        { SONYPI_DEVICE_MODEL_TYPE2, 0x38, SONYPI_LID_MASK, sonypi_lidev },
        { SONYPI_DEVICE_MODEL_TYPE2, 0x11, SONYPI_JOGGER_MASK, sonypi_joggerev },
        { SONYPI_DEVICE_MODEL_TYPE2, 0x61, SONYPI_CAPTURE_MASK, sonypi_captureev },
        { SONYPI_DEVICE_MODEL_TYPE2, 0x21, SONYPI_FNKEY_MASK, sonypi_fnkeyev },
        { SONYPI_DEVICE_MODEL_TYPE2, 0x31, SONYPI_BLUETOOTH_MASK, sonypi_blueev },
        { SONYPI_DEVICE_MODEL_TYPE2, 0x08, SONYPI_PKEY_MASK, sonypi_pkeyev },
        { SONYPI_DEVICE_MODEL_TYPE2, 0x11, SONYPI_BACK_MASK, sonypi_backev },
        { SONYPI_DEVICE_MODEL_TYPE2, 0x21, SONYPI_HELP_MASK, sonypi_helpev },
        { SONYPI_DEVICE_MODEL_TYPE2, 0x21, SONYPI_ZOOM_MASK, sonypi_zoomev },
        { SONYPI_DEVICE_MODEL_TYPE2, 0x20, SONYPI_THUMBPHRASE_MASK, sonypi_thumbphraseev },
        { SONYPI_DEVICE_MODEL_TYPE2, 0x31, SONYPI_MEMORYSTICK_MASK, sonypi_memorystickev },
        { SONYPI_DEVICE_MODEL_TYPE2, 0x41, SONYPI_BATTERY_MASK, sonypi_batteryev },
        { SONYPI_DEVICE_MODEL_TYPE2, 0x31, SONYPI_PKEY_MASK, sonypi_pkeyev },

        { SONYPI_DEVICE_MODEL_TYPE3, 0, 0xffffffff, sonypi_releaseev },
        { SONYPI_DEVICE_MODEL_TYPE3, 0x21, SONYPI_FNKEY_MASK, sonypi_fnkeyev },
        { SONYPI_DEVICE_MODEL_TYPE3, 0x31, SONYPI_WIRELESS_MASK, sonypi_wlessev },
        { SONYPI_DEVICE_MODEL_TYPE3, 0x31, SONYPI_MEMORYSTICK_MASK, sonypi_memorystickev },
        { SONYPI_DEVICE_MODEL_TYPE3, 0x41, SONYPI_BATTERY_MASK, sonypi_batteryev },
        { SONYPI_DEVICE_MODEL_TYPE3, 0x31, SONYPI_PKEY_MASK, sonypi_pkeyev },
        { 0 }
};

#define SONYPI_BUF_SIZE 128

/* Correspondance table between sonypi events and input layer events */
static struct {
        int sonypiev;
        int inputev;
} sonypi_inputkeys[] = {
        { SONYPI_EVENT_CAPTURE_PRESSED,         KEY_CAMERA },
        { SONYPI_EVENT_FNKEY_ONLY,              KEY_FN },
        { SONYPI_EVENT_FNKEY_ESC,               KEY_FN_ESC },
        { SONYPI_EVENT_FNKEY_F1,                KEY_FN_F1 },
        { SONYPI_EVENT_FNKEY_F2,                KEY_FN_F2 },
        { SONYPI_EVENT_FNKEY_F3,                KEY_FN_F3 },
        { SONYPI_EVENT_FNKEY_F4,                KEY_FN_F4 },
        { SONYPI_EVENT_FNKEY_F5,                KEY_FN_F5 },
        { SONYPI_EVENT_FNKEY_F6,                KEY_FN_F6 },
        { SONYPI_EVENT_FNKEY_F7,                KEY_FN_F7 },
        { SONYPI_EVENT_FNKEY_F8,                KEY_FN_F8 },
        { SONYPI_EVENT_FNKEY_F9,                KEY_FN_F9 },
        { SONYPI_EVENT_FNKEY_F10,               KEY_FN_F10 },
        { SONYPI_EVENT_FNKEY_F11,               KEY_FN_F11 },
        { SONYPI_EVENT_FNKEY_F12,               KEY_FN_F12 },
        { SONYPI_EVENT_FNKEY_1,                 KEY_FN_1 },
        { SONYPI_EVENT_FNKEY_2,                 KEY_FN_2 },
        { SONYPI_EVENT_FNKEY_D,                 KEY_FN_D },
        { SONYPI_EVENT_FNKEY_E,                 KEY_FN_E },
        { SONYPI_EVENT_FNKEY_F,                 KEY_FN_F },
        { SONYPI_EVENT_FNKEY_S,                 KEY_FN_S },
        { SONYPI_EVENT_FNKEY_B,                 KEY_FN_B },
        { SONYPI_EVENT_BLUETOOTH_PRESSED,       KEY_BLUE },
        { SONYPI_EVENT_BLUETOOTH_ON,            KEY_BLUE },
        { SONYPI_EVENT_PKEY_P1,                 KEY_PROG1 },
        { SONYPI_EVENT_PKEY_P2,                 KEY_PROG2 },
        { SONYPI_EVENT_PKEY_P3,                 KEY_PROG3 },
        { SONYPI_EVENT_BACK_PRESSED,            KEY_BACK },
        { SONYPI_EVENT_HELP_PRESSED,            KEY_HELP },
        { SONYPI_EVENT_ZOOM_PRESSED,            KEY_ZOOM },
        { SONYPI_EVENT_THUMBPHRASE_PRESSED,     BTN_THUMB },
        { 0, 0 },
};

struct sonypi_keypress {
        struct input_dev *dev;
        int key;
};

static struct sonypi_device {
        struct pci_dev *dev;
        u16 irq;
        u16 bits;
        u16 ioport1;
        u16 ioport2;
        u16 region_size;
        u16 evtype_offset;
        int camera_power;
        int bluetooth_power;
        struct mutex lock;
        struct kfifo fifo;
        spinlock_t fifo_lock;
        wait_queue_head_t fifo_proc_list;
        struct fasync_struct *fifo_async;
        int open_count;
        int model;
        struct input_dev *input_jog_dev;
        struct input_dev *input_key_dev;
        struct work_struct input_work;
        struct kfifo input_fifo;
        spinlock_t input_fifo_lock;
} sonypi_device;

#define ITERATIONS_LONG         10000
#define ITERATIONS_SHORT        10

#define wait_on_command(quiet, command, iterations) { \
        unsigned int n = iterations; \
        while (--n && (command)) \
                udelay(1); \
        if (!n && (verbose || !quiet)) \
                printk(KERN_WARNING "sonypi command failed at %s : %s (line %d)\n", __FILE__, __func__, __LINE__); \
}

#ifdef CONFIG_ACPI
#define SONYPI_ACPI_ACTIVE (!acpi_disabled)
#else
#define SONYPI_ACPI_ACTIVE 0
#endif                          /* CONFIG_ACPI */

#ifdef CONFIG_ACPI
static struct acpi_device *sonypi_acpi_device;
static int acpi_driver_registered;
#endif

static int sonypi_ec_write(u8 addr, u8 value)
{
#ifdef CONFIG_ACPI
        if (SONYPI_ACPI_ACTIVE)
                return ec_write(addr, value);
#endif
        wait_on_command(1, inb_p(SONYPI_CST_IOPORT) & 3, ITERATIONS_LONG);
        outb_p(0x81, SONYPI_CST_IOPORT);
        wait_on_command(0, inb_p(SONYPI_CST_IOPORT) & 2, ITERATIONS_LONG);
        outb_p(addr, SONYPI_DATA_IOPORT);
        wait_on_command(0, inb_p(SONYPI_CST_IOPORT) & 2, ITERATIONS_LONG);
        outb_p(value, SONYPI_DATA_IOPORT);
        wait_on_command(0, inb_p(SONYPI_CST_IOPORT) & 2, ITERATIONS_LONG);
        return 0;
}

static int sonypi_ec_read(u8 addr, u8 *value)
{
#ifdef CONFIG_ACPI
        if (SONYPI_ACPI_ACTIVE)
                return ec_read(addr, value);
#endif
        wait_on_command(1, inb_p(SONYPI_CST_IOPORT) & 3, ITERATIONS_LONG);
        outb_p(0x80, SONYPI_CST_IOPORT);
        wait_on_command(0, inb_p(SONYPI_CST_IOPORT) & 2, ITERATIONS_LONG);
        outb_p(addr, SONYPI_DATA_IOPORT);
        wait_on_command(0, inb_p(SONYPI_CST_IOPORT) & 2, ITERATIONS_LONG);
        *value = inb_p(SONYPI_DATA_IOPORT);
        return 0;
}

static int ec_read16(u8 addr, u16 *value)
{
        u8 val_lb, val_hb;
        if (sonypi_ec_read(addr, &val_lb))
                return -1;
        if (sonypi_ec_read(addr + 1, &val_hb))
                return -1;
        *value = val_lb | (val_hb << 8);
        return 0;
}

/* Initializes the device - this comes from the AML code in the ACPI bios */
static void sonypi_type1_srs(void)
{
        u32 v;

        pci_read_config_dword(sonypi_device.dev, SONYPI_G10A, &v);
        v = (v & 0xFFFF0000) | ((u32) sonypi_device.ioport1);
        pci_write_config_dword(sonypi_device.dev, SONYPI_G10A, v);

        pci_read_config_dword(sonypi_device.dev, SONYPI_G10A, &v);
        v = (v & 0xFFF0FFFF) |
            (((u32) sonypi_device.ioport1 ^ sonypi_device.ioport2) << 16);
        pci_write_config_dword(sonypi_device.dev, SONYPI_G10A, v);

        v = inl(SONYPI_IRQ_PORT);
        v &= ~(((u32) 0x3) << SONYPI_IRQ_SHIFT);
        v |= (((u32) sonypi_device.bits) << SONYPI_IRQ_SHIFT);
        outl(v, SONYPI_IRQ_PORT);

        pci_read_config_dword(sonypi_device.dev, SONYPI_G10A, &v);
        v = (v & 0xFF1FFFFF) | 0x00C00000;
        pci_write_config_dword(sonypi_device.dev, SONYPI_G10A, v);
}

static void sonypi_type2_srs(void)
{
        if (sonypi_ec_write(SONYPI_SHIB, (sonypi_device.ioport1 & 0xFF00) >> 8))
                printk(KERN_WARNING "ec_write failed\n");
        if (sonypi_ec_write(SONYPI_SLOB, sonypi_device.ioport1 & 0x00FF))
                printk(KERN_WARNING "ec_write failed\n");
        if (sonypi_ec_write(SONYPI_SIRQ, sonypi_device.bits))
                printk(KERN_WARNING "ec_write failed\n");
        udelay(10);
}

static void sonypi_type3_srs(void)
{
        u16 v16;
        u8  v8;

        /* This model type uses the same initialization of
         * the embedded controller as the type2 models. */
        sonypi_type2_srs();

        /* Initialization of PCI config space of the LPC interface bridge. */
        v16 = (sonypi_device.ioport1 & 0xFFF0) | 0x01;
        pci_write_config_word(sonypi_device.dev, SONYPI_TYPE3_GID2, v16);
        pci_read_config_byte(sonypi_device.dev, SONYPI_TYPE3_MISC, &v8);
        v8 = (v8 & 0xCF) | 0x10;
        pci_write_config_byte(sonypi_device.dev, SONYPI_TYPE3_MISC, v8);
}

/* Disables the device - this comes from the AML code in the ACPI bios */
static void sonypi_type1_dis(void)
{
        u32 v;

        pci_read_config_dword(sonypi_device.dev, SONYPI_G10A, &v);
        v = v & 0xFF3FFFFF;
        pci_write_config_dword(sonypi_device.dev, SONYPI_G10A, v);

        v = inl(SONYPI_IRQ_PORT);
        v |= (0x3 << SONYPI_IRQ_SHIFT);
        outl(v, SONYPI_IRQ_PORT);
}

static void sonypi_type2_dis(void)
{
        if (sonypi_ec_write(SONYPI_SHIB, 0))
                printk(KERN_WARNING "ec_write failed\n");
        if (sonypi_ec_write(SONYPI_SLOB, 0))
                printk(KERN_WARNING "ec_write failed\n");
        if (sonypi_ec_write(SONYPI_SIRQ, 0))
                printk(KERN_WARNING "ec_write failed\n");
}

static void sonypi_type3_dis(void)
{
        sonypi_type2_dis();
        udelay(10);
        pci_write_config_word(sonypi_device.dev, SONYPI_TYPE3_GID2, 0);
}

static u8 sonypi_call1(u8 dev)
{
        u8 v1, v2;

        wait_on_command(0, inb_p(sonypi_device.ioport2) & 2, ITERATIONS_LONG);
        outb(dev, sonypi_device.ioport2);
        v1 = inb_p(sonypi_device.ioport2);
        v2 = inb_p(sonypi_device.ioport1);
        return v2;
}

static u8 sonypi_call2(u8 dev, u8 fn)
{
        u8 v1;

        wait_on_command(0, inb_p(sonypi_device.ioport2) & 2, ITERATIONS_LONG);
        outb(dev, sonypi_device.ioport2);
        wait_on_command(0, inb_p(sonypi_device.ioport2) & 2, ITERATIONS_LONG);
        outb(fn, sonypi_device.ioport1);
        v1 = inb_p(sonypi_device.ioport1);
        return v1;
}

static u8 sonypi_call3(u8 dev, u8 fn, u8 v)
{
        u8 v1;

        wait_on_command(0, inb_p(sonypi_device.ioport2) & 2, ITERATIONS_LONG);
        outb(dev, sonypi_device.ioport2);
        wait_on_command(0, inb_p(sonypi_device.ioport2) & 2, ITERATIONS_LONG);
        outb(fn, sonypi_device.ioport1);
        wait_on_command(0, inb_p(sonypi_device.ioport2) & 2, ITERATIONS_LONG);
        outb(v, sonypi_device.ioport1);
        v1 = inb_p(sonypi_device.ioport1);
        return v1;
}

#if 0
/* Get brightness, hue etc. Unreliable... */
static u8 sonypi_read(u8 fn)
{
        u8 v1, v2;
        int n = 100;

        while (n--) {
                v1 = sonypi_call2(0x8f, fn);
                v2 = sonypi_call2(0x8f, fn);
                if (v1 == v2 && v1 != 0xff)
                        return v1;
        }
        return 0xff;
}
#endif

/* Set brightness, hue etc */
static void sonypi_set(u8 fn, u8 v)
{
        wait_on_command(0, sonypi_call3(0x90, fn, v), ITERATIONS_SHORT);
}

/* Tests if the camera is ready */
static int sonypi_camera_ready(void)
{
        u8 v;

        v = sonypi_call2(0x8f, SONYPI_CAMERA_STATUS);
        return (v != 0xff && (v & SONYPI_CAMERA_STATUS_READY));
}

/* Turns the camera off */
static void sonypi_camera_off(void)
{
        sonypi_set(SONYPI_CAMERA_PICTURE, SONYPI_CAMERA_MUTE_MASK);

        if (!sonypi_device.camera_power)
                return;

        sonypi_call2(0x91, 0);
        sonypi_device.camera_power = 0;
}

/* Turns the camera on */
static void sonypi_camera_on(void)
{
        int i, j;

        if (sonypi_device.camera_power)
                return;

        for (j = 5; j > 0; j--) {

                while (sonypi_call2(0x91, 0x1))
                        msleep(10);
                sonypi_call1(0x93);

                for (i = 400; i > 0; i--) {
                        if (sonypi_camera_ready())
                                break;
                        msleep(10);
                }
                if (i)
                        break;
        }

        if (j == 0) {
                printk(KERN_WARNING "sonypi: failed to power on camera\n");
                return;
        }

        sonypi_set(0x10, 0x5a);
        sonypi_device.camera_power = 1;
}

/* sets the bluetooth subsystem power state */
static void sonypi_setbluetoothpower(u8 state)
{
        state = !!state;

        if (sonypi_device.bluetooth_power == state)
                return;

        sonypi_call2(0x96, state);
        sonypi_call1(0x82);
        sonypi_device.bluetooth_power = state;
}

static void input_keyrelease(struct work_struct *work)
{
        struct sonypi_keypress kp;

        while (kfifo_out_locked(&sonypi_device.input_fifo, (unsigned char *)&kp,
                         sizeof(kp), &sonypi_device.input_fifo_lock)
                        == sizeof(kp)) {
                msleep(10);
                input_report_key(kp.dev, kp.key, 0);
                input_sync(kp.dev);
        }
}

static void sonypi_report_input_event(u8 event)
{
        struct input_dev *jog_dev = sonypi_device.input_jog_dev;
        struct input_dev *key_dev = sonypi_device.input_key_dev;
        struct sonypi_keypress kp = { NULL };
        int i;

        switch (event) {
        case SONYPI_EVENT_JOGDIAL_UP:
        case SONYPI_EVENT_JOGDIAL_UP_PRESSED:
                input_report_rel(jog_dev, REL_WHEEL, 1);
                input_sync(jog_dev);
                break;

        case SONYPI_EVENT_JOGDIAL_DOWN:
        case SONYPI_EVENT_JOGDIAL_DOWN_PRESSED:
                input_report_rel(jog_dev, REL_WHEEL, -1);
                input_sync(jog_dev);
                break;

        case SONYPI_EVENT_JOGDIAL_PRESSED:
                kp.key = BTN_MIDDLE;
                kp.dev = jog_dev;
                break;

        case SONYPI_EVENT_FNKEY_RELEASED:
                /* Nothing, not all VAIOs generate this event */
                break;

        default:
                for (i = 0; sonypi_inputkeys[i].sonypiev; i++)
                        if (event == sonypi_inputkeys[i].sonypiev) {
                                kp.dev = key_dev;
                                kp.key = sonypi_inputkeys[i].inputev;
                                break;
                        }
                break;
        }

        if (kp.dev) {
                input_report_key(kp.dev, kp.key, 1);
                input_sync(kp.dev);
                kfifo_in_locked(&sonypi_device.input_fifo,
                        (unsigned char *)&kp, sizeof(kp),
                        &sonypi_device.input_fifo_lock);
                schedule_work(&sonypi_device.input_work);
        }
}

/* Interrupt handler: some event is available */
static irqreturn_t sonypi_irq(int irq, void *dev_id)
{
        u8 v1, v2, event = 0;
        int i, j;

        v1 = inb_p(sonypi_device.ioport1);
        v2 = inb_p(sonypi_device.ioport1 + sonypi_device.evtype_offset);

        for (i = 0; sonypi_eventtypes[i].model; i++) {
                if (sonypi_device.model != sonypi_eventtypes[i].model)
                        continue;
                if ((v2 & sonypi_eventtypes[i].data) !=
                    sonypi_eventtypes[i].data)
                        continue;
                if (!(mask & sonypi_eventtypes[i].mask))
                        continue;
                for (j = 0; sonypi_eventtypes[i].events[j].event; j++) {
                        if (v1 == sonypi_eventtypes[i].events[j].data) {
                                event = sonypi_eventtypes[i].events[j].event;
                                goto found;
                        }
                }
        }

        if (verbose)
                printk(KERN_WARNING
                       "sonypi: unknown event port1=0x%02x,port2=0x%02x\n",
                       v1, v2);
        /* We need to return IRQ_HANDLED here because there *are*
         * events belonging to the sonypi device we don't know about,
         * but we still don't want those to pollute the logs... */
        return IRQ_HANDLED;

found:
        if (verbose > 1)
                printk(KERN_INFO
                       "sonypi: event port1=0x%02x,port2=0x%02x\n", v1, v2);

        if (useinput)
                sonypi_report_input_event(event);

        kfifo_in_locked(&sonypi_device.fifo, (unsigned char *)&event,
                        sizeof(event), &sonypi_device.fifo_lock);
        kill_fasync(&sonypi_device.fifo_async, SIGIO, POLL_IN);
        wake_up_interruptible(&sonypi_device.fifo_proc_list);

        return IRQ_HANDLED;
}

static int sonypi_misc_fasync(int fd, struct file *filp, int on)
{
        return fasync_helper(fd, filp, on, &sonypi_device.fifo_async);
}

static int sonypi_misc_release(struct inode *inode, struct file *file)
{
        mutex_lock(&sonypi_device.lock);
        sonypi_device.open_count--;
        mutex_unlock(&sonypi_device.lock);
        return 0;
}

static int sonypi_misc_open(struct inode *inode, struct file *file)
{
        mutex_lock(&sonypi_device.lock);
        /* Flush input queue on first open */
        if (!sonypi_device.open_count)
                kfifo_reset(&sonypi_device.fifo);
        sonypi_device.open_count++;
        mutex_unlock(&sonypi_device.lock);

        return 0;
}

static ssize_t sonypi_misc_read(struct file *file, char __user *buf,
                                size_t count, loff_t *pos)
{
        ssize_t ret;
        unsigned char c;

        if ((kfifo_len(&sonypi_device.fifo) == 0) &&
            (file->f_flags & O_NONBLOCK))
                return -EAGAIN;

        ret = wait_event_interruptible(sonypi_device.fifo_proc_list,
                                       kfifo_len(&sonypi_device.fifo) != 0);
        if (ret)
                return ret;

        while (ret < count &&
               (kfifo_out_locked(&sonypi_device.fifo, &c, sizeof(c),
                                 &sonypi_device.fifo_lock) == sizeof(c))) {
                if (put_user(c, buf++))
                        return -EFAULT;
                ret++;
        }

        if (ret > 0) {
                struct inode *inode = file_inode(file);
                inode_set_atime_to_ts(inode, current_time(inode));
        }

        return ret;
}

static __poll_t sonypi_misc_poll(struct file *file, poll_table *wait)
{
        poll_wait(file, &sonypi_device.fifo_proc_list, wait);
        if (kfifo_len(&sonypi_device.fifo))
                return EPOLLIN | EPOLLRDNORM;
        return 0;
}

static long sonypi_misc_ioctl(struct file *fp,
                             unsigned int cmd, unsigned long arg)
{
        long ret = 0;
        void __user *argp = (void __user *)arg;
        u8 val8;
        u16 val16;

        mutex_lock(&sonypi_device.lock);
        switch (cmd) {
        case SONYPI_IOCGBRT:
                if (sonypi_ec_read(SONYPI_LCD_LIGHT, &val8)) {
                        ret = -EIO;
                        break;
                }
                if (copy_to_user(argp, &val8, sizeof(val8)))
                        ret = -EFAULT;
                break;
        case SONYPI_IOCSBRT:
                if (copy_from_user(&val8, argp, sizeof(val8))) {
                        ret = -EFAULT;
                        break;
                }
                if (sonypi_ec_write(SONYPI_LCD_LIGHT, val8))
                        ret = -EIO;
                break;
        case SONYPI_IOCGBAT1CAP:
                if (ec_read16(SONYPI_BAT1_FULL, &val16)) {
                        ret = -EIO;
                        break;
                }
                if (copy_to_user(argp, &val16, sizeof(val16)))
                        ret = -EFAULT;
                break;
        case SONYPI_IOCGBAT1REM:
                if (ec_read16(SONYPI_BAT1_LEFT, &val16)) {
                        ret = -EIO;
                        break;
                }
                if (copy_to_user(argp, &val16, sizeof(val16)))
                        ret = -EFAULT;
                break;
        case SONYPI_IOCGBAT2CAP:
                if (ec_read16(SONYPI_BAT2_FULL, &val16)) {
                        ret = -EIO;
                        break;
                }
                if (copy_to_user(argp, &val16, sizeof(val16)))
                        ret = -EFAULT;
                break;
        case SONYPI_IOCGBAT2REM:
                if (ec_read16(SONYPI_BAT2_LEFT, &val16)) {
                        ret = -EIO;
                        break;
                }
                if (copy_to_user(argp, &val16, sizeof(val16)))
                        ret = -EFAULT;
                break;
        case SONYPI_IOCGBATFLAGS:
                if (sonypi_ec_read(SONYPI_BAT_FLAGS, &val8)) {
                        ret = -EIO;
                        break;
                }
                val8 &= 0x07;
                if (copy_to_user(argp, &val8, sizeof(val8)))
                        ret = -EFAULT;
                break;
        case SONYPI_IOCGBLUE:
                val8 = sonypi_device.bluetooth_power;
                if (copy_to_user(argp, &val8, sizeof(val8)))
                        ret = -EFAULT;
                break;
        case SONYPI_IOCSBLUE:
                if (copy_from_user(&val8, argp, sizeof(val8))) {
                        ret = -EFAULT;
                        break;
                }
                sonypi_setbluetoothpower(val8);
                break;
        /* FAN Controls */
        case SONYPI_IOCGFAN:
                if (sonypi_ec_read(SONYPI_FAN0_STATUS, &val8)) {
                        ret = -EIO;
                        break;
                }
                if (copy_to_user(argp, &val8, sizeof(val8)))
                        ret = -EFAULT;
                break;
        case SONYPI_IOCSFAN:
                if (copy_from_user(&val8, argp, sizeof(val8))) {
                        ret = -EFAULT;
                        break;
                }
                if (sonypi_ec_write(SONYPI_FAN0_STATUS, val8))
                        ret = -EIO;
                break;
        /* GET Temperature (useful under APM) */
        case SONYPI_IOCGTEMP:
                if (sonypi_ec_read(SONYPI_TEMP_STATUS, &val8)) {
                        ret = -EIO;
                        break;
                }
                if (copy_to_user(argp, &val8, sizeof(val8)))
                        ret = -EFAULT;
                break;
        default:
                ret = -EINVAL;
        }
        mutex_unlock(&sonypi_device.lock);
        return ret;
}

static const struct file_operations sonypi_misc_fops = {
        .owner          = THIS_MODULE,
        .read           = sonypi_misc_read,
        .poll           = sonypi_misc_poll,
        .open           = sonypi_misc_open,
        .release        = sonypi_misc_release,
        .fasync         = sonypi_misc_fasync,
        .unlocked_ioctl = sonypi_misc_ioctl,
};

static struct miscdevice sonypi_misc_device = {
        .minor          = MISC_DYNAMIC_MINOR,
        .name           = "sonypi",
        .fops           = &sonypi_misc_fops,
};

static void sonypi_enable(unsigned int camera_on)
{
        switch (sonypi_device.model) {
        case SONYPI_DEVICE_MODEL_TYPE1:
                sonypi_type1_srs();
                break;
        case SONYPI_DEVICE_MODEL_TYPE2:
                sonypi_type2_srs();
                break;
        case SONYPI_DEVICE_MODEL_TYPE3:
                sonypi_type3_srs();
                break;
        }

        sonypi_call1(0x82);
        sonypi_call2(0x81, 0xff);
        sonypi_call1(compat ? 0x92 : 0x82);

        /* Enable ACPI mode to get Fn key events */
        if (!SONYPI_ACPI_ACTIVE && fnkeyinit)
                outb(0xf0, 0xb2);

        if (camera && camera_on)
                sonypi_camera_on();
}

static int sonypi_disable(void)
{
        sonypi_call2(0x81, 0);  /* make sure we don't get any more events */
        if (camera)
                sonypi_camera_off();

        /* disable ACPI mode */
        if (!SONYPI_ACPI_ACTIVE && fnkeyinit)
                outb(0xf1, 0xb2);

        switch (sonypi_device.model) {
        case SONYPI_DEVICE_MODEL_TYPE1:
                sonypi_type1_dis();
                break;
        case SONYPI_DEVICE_MODEL_TYPE2:
                sonypi_type2_dis();
                break;
        case SONYPI_DEVICE_MODEL_TYPE3:
                sonypi_type3_dis();
                break;
        }

        return 0;
}

#ifdef CONFIG_ACPI
static int sonypi_acpi_add(struct acpi_device *device)
{
        sonypi_acpi_device = device;
        strcpy(acpi_device_name(device), "Sony laptop hotkeys");
        strcpy(acpi_device_class(device), "sony/hotkey");
        return 0;
}

static void sonypi_acpi_remove(struct acpi_device *device)
{
        sonypi_acpi_device = NULL;
}

static const struct acpi_device_id sonypi_device_ids[] = {
        {"SNY6001", 0},
        {"", 0},
};

static struct acpi_driver sonypi_acpi_driver = {
        .name           = "sonypi",
        .class          = "hkey",
        .ids            = sonypi_device_ids,
        .ops            = {
                           .add = sonypi_acpi_add,
                           .remove = sonypi_acpi_remove,
        },
};
#endif

static int sonypi_create_input_devices(struct platform_device *pdev)
{
        struct input_dev *jog_dev;
        struct input_dev *key_dev;
        int i;
        int error;

        sonypi_device.input_jog_dev = jog_dev = input_allocate_device();
        if (!jog_dev)
                return -ENOMEM;

        jog_dev->name = "Sony Vaio Jogdial";
        jog_dev->id.bustype = BUS_ISA;
        jog_dev->id.vendor = PCI_VENDOR_ID_SONY;
        jog_dev->dev.parent = &pdev->dev;

        jog_dev->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_REL);
        jog_dev->keybit[BIT_WORD(BTN_MOUSE)] = BIT_MASK(BTN_MIDDLE);
        jog_dev->relbit[0] = BIT_MASK(REL_WHEEL);

        sonypi_device.input_key_dev = key_dev = input_allocate_device();
        if (!key_dev) {
                error = -ENOMEM;
                goto err_free_jogdev;
        }

        key_dev->name = "Sony Vaio Keys";
        key_dev->id.bustype = BUS_ISA;
        key_dev->id.vendor = PCI_VENDOR_ID_SONY;
        key_dev->dev.parent = &pdev->dev;

        /* Initialize the Input Drivers: special keys */
        key_dev->evbit[0] = BIT_MASK(EV_KEY);
        for (i = 0; sonypi_inputkeys[i].sonypiev; i++)
                if (sonypi_inputkeys[i].inputev)
                        set_bit(sonypi_inputkeys[i].inputev, key_dev->keybit);

        error = input_register_device(jog_dev);
        if (error)
                goto err_free_keydev;

        error = input_register_device(key_dev);
        if (error)
                goto err_unregister_jogdev;

        return 0;

 err_unregister_jogdev:
        input_unregister_device(jog_dev);
        /* Set to NULL so we don't free it again below */
        jog_dev = NULL;
 err_free_keydev:
        input_free_device(key_dev);
        sonypi_device.input_key_dev = NULL;
 err_free_jogdev:
        input_free_device(jog_dev);
        sonypi_device.input_jog_dev = NULL;

        return error;
}

static int sonypi_setup_ioports(struct sonypi_device *dev,
                                const struct sonypi_ioport_list *ioport_list)
{
        /* try to detect if sony-laptop is being used and thus
         * has already requested one of the known ioports.
         * As in the deprecated check_region this is racy has we have
         * multiple ioports available and one of them can be requested
         * between this check and the subsequent request. Anyway, as an
         * attempt to be some more user-friendly as we currently are,
         * this is enough.
         */
        const struct sonypi_ioport_list *check = ioport_list;
        while (check_ioport && check->port1) {
                if (!request_region(check->port1,
                                   sonypi_device.region_size,
                                   "Sony Programmable I/O Device Check")) {
                        printk(KERN_ERR "sonypi: ioport 0x%.4x busy, using sony-laptop? "
                                        "if not use check_ioport=0\n",
                                        check->port1);
                        return -EBUSY;
                }
                release_region(check->port1, sonypi_device.region_size);
                check++;
        }

        while (ioport_list->port1) {

                if (request_region(ioport_list->port1,
                                   sonypi_device.region_size,
                                   "Sony Programmable I/O Device")) {
                        dev->ioport1 = ioport_list->port1;
                        dev->ioport2 = ioport_list->port2;
                        return 0;
                }
                ioport_list++;
        }

        return -EBUSY;
}

static int sonypi_setup_irq(struct sonypi_device *dev,
                                      const struct sonypi_irq_list *irq_list)
{
        while (irq_list->irq) {

                if (!request_irq(irq_list->irq, sonypi_irq,
                                 IRQF_SHARED, "sonypi", sonypi_irq)) {
                        dev->irq = irq_list->irq;
                        dev->bits = irq_list->bits;
                        return 0;
                }
                irq_list++;
        }

        return -EBUSY;
}

static void sonypi_display_info(void)
{
        printk(KERN_INFO "sonypi: detected type%d model, "
               "verbose = %d, fnkeyinit = %s, camera = %s, "
               "compat = %s, mask = 0x%08lx, useinput = %s, acpi = %s\n",
               sonypi_device.model,
               verbose,
               str_on_off(fnkeyinit),
               str_on_off(camera),
               str_on_off(compat),
               mask,
               str_on_off(useinput),
               str_on_off(SONYPI_ACPI_ACTIVE));
        printk(KERN_INFO "sonypi: enabled at irq=%d, port1=0x%x, port2=0x%x\n",
               sonypi_device.irq,
               sonypi_device.ioport1, sonypi_device.ioport2);

        if (minor == -1)
                printk(KERN_INFO "sonypi: device allocated minor is %d\n",
                       sonypi_misc_device.minor);
}

static int sonypi_probe(struct platform_device *dev)
{
        const struct sonypi_ioport_list *ioport_list;
        const struct sonypi_irq_list *irq_list;
        struct pci_dev *pcidev;
        int error;

        printk(KERN_WARNING "sonypi: please try the sony-laptop module instead "
                        "and report failures, see also "
                        "http://www.linux.it/~malattia/wiki/index.php/Sony_drivers\n");

        spin_lock_init(&sonypi_device.fifo_lock);
        error = kfifo_alloc(&sonypi_device.fifo, SONYPI_BUF_SIZE, GFP_KERNEL);
        if (error) {
                printk(KERN_ERR "sonypi: kfifo_alloc failed\n");
                return error;
        }

        init_waitqueue_head(&sonypi_device.fifo_proc_list);
        mutex_init(&sonypi_device.lock);
        sonypi_device.bluetooth_power = -1;

        if ((pcidev = pci_get_device(PCI_VENDOR_ID_INTEL,
                                     PCI_DEVICE_ID_INTEL_82371AB_3, NULL)))
                sonypi_device.model = SONYPI_DEVICE_MODEL_TYPE1;
        else if ((pcidev = pci_get_device(PCI_VENDOR_ID_INTEL,
                                          PCI_DEVICE_ID_INTEL_ICH6_1, NULL)))
                sonypi_device.model = SONYPI_DEVICE_MODEL_TYPE3;
        else if ((pcidev = pci_get_device(PCI_VENDOR_ID_INTEL,
                                          PCI_DEVICE_ID_INTEL_ICH7_1, NULL)))
                sonypi_device.model = SONYPI_DEVICE_MODEL_TYPE3;
        else
                sonypi_device.model = SONYPI_DEVICE_MODEL_TYPE2;

        if (pcidev && pci_enable_device(pcidev)) {
                printk(KERN_ERR "sonypi: pci_enable_device failed\n");
                error = -EIO;
                goto err_put_pcidev;
        }

        sonypi_device.dev = pcidev;

        if (sonypi_device.model == SONYPI_DEVICE_MODEL_TYPE1) {
                ioport_list = sonypi_type1_ioport_list;
                sonypi_device.region_size = SONYPI_TYPE1_REGION_SIZE;
                sonypi_device.evtype_offset = SONYPI_TYPE1_EVTYPE_OFFSET;
                irq_list = sonypi_type1_irq_list;
        } else if (sonypi_device.model == SONYPI_DEVICE_MODEL_TYPE2) {
                ioport_list = sonypi_type2_ioport_list;
                sonypi_device.region_size = SONYPI_TYPE2_REGION_SIZE;
                sonypi_device.evtype_offset = SONYPI_TYPE2_EVTYPE_OFFSET;
                irq_list = sonypi_type2_irq_list;
        } else {
                ioport_list = sonypi_type3_ioport_list;
                sonypi_device.region_size = SONYPI_TYPE3_REGION_SIZE;
                sonypi_device.evtype_offset = SONYPI_TYPE3_EVTYPE_OFFSET;
                irq_list = sonypi_type3_irq_list;
        }

        error = sonypi_setup_ioports(&sonypi_device, ioport_list);
        if (error) {
                printk(KERN_ERR "sonypi: failed to request ioports\n");
                goto err_disable_pcidev;
        }

        error = sonypi_setup_irq(&sonypi_device, irq_list);
        if (error) {
                printk(KERN_ERR "sonypi: request_irq failed\n");
                goto err_free_ioports;
        }

        if (minor != -1)
                sonypi_misc_device.minor = minor;
        error = misc_register(&sonypi_misc_device);
        if (error) {
                printk(KERN_ERR "sonypi: misc_register failed\n");
                goto err_free_irq;
        }

        sonypi_display_info();

        if (useinput) {

                error = sonypi_create_input_devices(dev);
                if (error) {
                        printk(KERN_ERR
                                "sonypi: failed to create input devices\n");
                        goto err_miscdev_unregister;
                }

                spin_lock_init(&sonypi_device.input_fifo_lock);
                error = kfifo_alloc(&sonypi_device.input_fifo, SONYPI_BUF_SIZE,
                                GFP_KERNEL);
                if (error) {
                        printk(KERN_ERR "sonypi: kfifo_alloc failed\n");
                        goto err_inpdev_unregister;
                }

                INIT_WORK(&sonypi_device.input_work, input_keyrelease);
        }

        sonypi_enable(0);

        return 0;

 err_inpdev_unregister:
        input_unregister_device(sonypi_device.input_key_dev);
        input_unregister_device(sonypi_device.input_jog_dev);
 err_miscdev_unregister:
        misc_deregister(&sonypi_misc_device);
 err_free_irq:
        free_irq(sonypi_device.irq, sonypi_irq);
 err_free_ioports:
        release_region(sonypi_device.ioport1, sonypi_device.region_size);
 err_disable_pcidev:
        if (pcidev)
                pci_disable_device(pcidev);
 err_put_pcidev:
        pci_dev_put(pcidev);
        kfifo_free(&sonypi_device.fifo);

        return error;
}

static void sonypi_remove(struct platform_device *dev)
{
        sonypi_disable();

        synchronize_irq(sonypi_device.irq);
        flush_work(&sonypi_device.input_work);

        if (useinput) {
                input_unregister_device(sonypi_device.input_key_dev);
                input_unregister_device(sonypi_device.input_jog_dev);
                kfifo_free(&sonypi_device.input_fifo);
        }

        misc_deregister(&sonypi_misc_device);

        free_irq(sonypi_device.irq, sonypi_irq);
        release_region(sonypi_device.ioport1, sonypi_device.region_size);

        if (sonypi_device.dev) {
                pci_disable_device(sonypi_device.dev);
                pci_dev_put(sonypi_device.dev);
        }

        kfifo_free(&sonypi_device.fifo);
}

#ifdef CONFIG_PM_SLEEP
static int old_camera_power;

static int sonypi_suspend(struct device *dev)
{
        old_camera_power = sonypi_device.camera_power;
        sonypi_disable();

        return 0;
}

static int sonypi_resume(struct device *dev)
{
        sonypi_enable(old_camera_power);
        return 0;
}

static SIMPLE_DEV_PM_OPS(sonypi_pm, sonypi_suspend, sonypi_resume);
#define SONYPI_PM       (&sonypi_pm)
#else
#define SONYPI_PM       NULL
#endif

static void sonypi_shutdown(struct platform_device *dev)
{
        sonypi_disable();
}

static struct platform_driver sonypi_driver = {
        .driver         = {
                .name   = "sonypi",
                .pm     = SONYPI_PM,
        },
        .probe          = sonypi_probe,
        .remove         = sonypi_remove,
        .shutdown       = sonypi_shutdown,
};

static struct platform_device *sonypi_platform_device;

static const struct dmi_system_id sonypi_dmi_table[] __initconst = {
        {
                .ident = "Sony Vaio",
                .matches = {
                        DMI_MATCH(DMI_SYS_VENDOR, "Sony Corporation"),
                        DMI_MATCH(DMI_PRODUCT_NAME, "PCG-"),
                },
        },
        {
                .ident = "Sony Vaio",
                .matches = {
                        DMI_MATCH(DMI_SYS_VENDOR, "Sony Corporation"),
                        DMI_MATCH(DMI_PRODUCT_NAME, "VGN-"),
                },
        },
        { }
};

static int __init sonypi_init(void)
{
        int error;

        printk(KERN_INFO
                "sonypi: Sony Programmable I/O Controller Driver v%s.\n",
                SONYPI_DRIVER_VERSION);

        if (!dmi_check_system(sonypi_dmi_table))
                return -ENODEV;

        error = platform_driver_register(&sonypi_driver);
        if (error)
                return error;

        sonypi_platform_device = platform_device_alloc("sonypi", -1);
        if (!sonypi_platform_device) {
                error = -ENOMEM;
                goto err_driver_unregister;
        }

        error = platform_device_add(sonypi_platform_device);
        if (error)
                goto err_free_device;

#ifdef CONFIG_ACPI
        if (acpi_bus_register_driver(&sonypi_acpi_driver) >= 0)
                acpi_driver_registered = 1;
#endif

        return 0;

 err_free_device:
        platform_device_put(sonypi_platform_device);
 err_driver_unregister:
        platform_driver_unregister(&sonypi_driver);
        return error;
}

static void __exit sonypi_exit(void)
{
#ifdef CONFIG_ACPI
        if (acpi_driver_registered)
                acpi_bus_unregister_driver(&sonypi_acpi_driver);
#endif
        platform_device_unregister(sonypi_platform_device);
        platform_driver_unregister(&sonypi_driver);
        printk(KERN_INFO "sonypi: removed.\n");
}

module_init(sonypi_init);
module_exit(sonypi_exit);