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sonypi.c

/*
 * 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 AlcĂ´ve <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.
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 *
 */

#include <linux/module.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 <asm/uaccess.h>
#include <asm/io.h>
#include <asm/system.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__, __FUNCTION__, __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_EC
      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_EC
      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 initialiazation 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_get(sonypi_device.input_fifo, (unsigned char *)&kp,
                   sizeof(kp)) == 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_put(sonypi_device.input_fifo,
                    (unsigned char *)&kp, sizeof(kp));
            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);

#ifdef CONFIG_ACPI
      if (sonypi_acpi_device)
            acpi_bus_generate_proc_event(sonypi_acpi_device, 1, event);
#endif

      kfifo_put(sonypi_device.fifo, (unsigned char *)&event, sizeof(event));
      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)
{
      int retval;

      retval = fasync_helper(fd, filp, on, &sonypi_device.fifo_async);
      if (retval < 0)
            return retval;
      return 0;
}

static int sonypi_misc_release(struct inode *inode, struct file *file)
{
      sonypi_misc_fasync(-1, file, 0);
      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_get(sonypi_device.fifo, &c, sizeof(c)) == sizeof(c))) {
            if (put_user(c, buf++))
                  return -EFAULT;
            ret++;
      }

      if (ret > 0) {
            struct inode *inode = file->f_path.dentry->d_inode;
            inode->i_atime = current_fs_time(inode->i_sb);
      }

      return ret;
}

static unsigned int 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 POLLIN | POLLRDNORM;
      return 0;
}

static int sonypi_misc_ioctl(struct inode *ip, struct file *fp,
                       unsigned int cmd, unsigned long arg)
{
      int 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,
      .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 int sonypi_acpi_remove(struct acpi_device *device, int type)
{
      sonypi_acpi_device = NULL;
      return 0;
}

const static 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 __devinit 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 __devinit 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 Programable 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 Programable I/O Device")) {
                  dev->ioport1 = ioport_list->port1;
                  dev->ioport2 = ioport_list->port2;
                  return 0;
            }
            ioport_list++;
      }

      return -EBUSY;
}

static int __devinit 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 __devinit 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,
             fnkeyinit ? "on" : "off",
             camera ? "on" : "off",
             compat ? "on" : "off",
             mask,
             useinput ? "on" : "off",
             SONYPI_ACPI_ACTIVE ? "on" : "off");
      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 __devinit 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);
      sonypi_device.fifo = kfifo_alloc(SONYPI_BUF_SIZE, GFP_KERNEL,
                               &sonypi_device.fifo_lock);
      if (IS_ERR(sonypi_device.fifo)) {
            printk(KERN_ERR "sonypi: kfifo_alloc failed\n");
            return PTR_ERR(sonypi_device.fifo);
      }

      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);
            sonypi_device.input_fifo =
                  kfifo_alloc(SONYPI_BUF_SIZE, GFP_KERNEL,
                            &sonypi_device.input_fifo_lock);
            if (IS_ERR(sonypi_device.input_fifo)) {
                  printk(KERN_ERR "sonypi: kfifo_alloc failed\n");
                  error = PTR_ERR(sonypi_device.input_fifo);
                  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 int __devexit sonypi_remove(struct platform_device *dev)
{
      sonypi_disable();

      synchronize_irq(sonypi_device.irq);
      flush_scheduled_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);

      return 0;
}

#ifdef CONFIG_PM
static int old_camera_power;

static int sonypi_suspend(struct platform_device *dev, pm_message_t state)
{
      old_camera_power = sonypi_device.camera_power;
      sonypi_disable();

      return 0;
}

static int sonypi_resume(struct platform_device *dev)
{
      sonypi_enable(old_camera_power);
      return 0;
}
#else
#define sonypi_suspend  NULL
#define sonypi_resume   NULL
#endif

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

static struct platform_driver sonypi_driver = {
      .driver           = {
            .name = "sonypi",
            .owner      = THIS_MODULE,
      },
      .probe            = sonypi_probe,
      .remove           = __devexit_p(sonypi_remove),
      .shutdown   = sonypi_shutdown,
      .suspend    = sonypi_suspend,
      .resume           = sonypi_resume,
};

static struct platform_device *sonypi_platform_device;

static struct dmi_system_id __initdata sonypi_dmi_table[] = {
      {
            .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);

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