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/*

 *  USB ATI Remote support

 *

 *  Version 2.2.0 Copyright (c) 2004 Torrey Hoffman <thoffman@arnor.net>

 *  Version 2.1.1 Copyright (c) 2002 Vladimir Dergachev

 *

 *  This 2.2.0 version is a rewrite / cleanup of the 2.1.1 driver, including

 *  porting to the 2.6 kernel interfaces, along with other modification

 *  to better match the style of the existing usb/input drivers.  However, the

 *  protocol and hardware handling is essentially unchanged from 2.1.1.

 *

 *  The 2.1.1 driver was derived from the usbati_remote and usbkbd drivers by

 *  Vojtech Pavlik.

 *

 *  Changes:

 *

 *  Feb 2004: Torrey Hoffman <thoffman@arnor.net>

 *            Version 2.2.0

 *  Jun 2004: Torrey Hoffman <thoffman@arnor.net>

 *            Version 2.2.1

 *            Added key repeat support contributed by:

 *                Vincent Vanackere <vanackere@lif.univ-mrs.fr>

 *            Added support for the "Lola" remote contributed by:

 *                Seth Cohn <sethcohn@yahoo.com>

 *

 * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *

 *

 * This program is free software; you can redistribute it and/or modify

 * it under the terms of the GNU General Public License as published by

 * the Free Software Foundation; either version 2 of the License, or

 * (at your option) any later version.

 *

 * This program is distributed in the hope that it will be useful,

 * but WITHOUT ANY WARRANTY; without even the implied warranty of

 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

 * GNU General Public License for more details.

 *

 * You should have received a copy of the GNU General Public License

 * along with this program; if not, write to the Free Software

 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA

 *

 * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *

 *

 * Hardware & software notes

 *

 * These remote controls are distributed by ATI as part of their

 * "All-In-Wonder" video card packages.  The receiver self-identifies as a

 * "USB Receiver" with manufacturer "X10 Wireless Technology Inc".

 *

 * The "Lola" remote is available from X10.  See:

 *    http://www.x10.com/products/lola_sg1.htm

 * The Lola is similar to the ATI remote but has no mouse support, and slightly

 * different keys.

 *

 * It is possible to use multiple receivers and remotes on multiple computers

 * simultaneously by configuring them to use specific channels.

 *

 * The RF protocol used by the remote supports 16 distinct channels, 1 to 16.

 * Actually, it may even support more, at least in some revisions of the

 * hardware.

 *

 * Each remote can be configured to transmit on one channel as follows:

 *   - Press and hold the "hand icon" button.

 *   - When the red LED starts to blink, let go of the "hand icon" button.

 *   - When it stops blinking, input the channel code as two digits, from 01

 *     to 16, and press the hand icon again.

 *

 * The timing can be a little tricky.  Try loading the module with debug=1

 * to have the kernel print out messages about the remote control number

 * and mask.  Note: debugging prints remote numbers as zero-based hexadecimal.

 *

 * The driver has a "channel_mask" parameter. This bitmask specifies which

 * channels will be ignored by the module.  To mask out channels, just add

 * all the 2^channel_number values together.

 *

 * For instance, set channel_mask = 2^4 = 16 (binary 10000) to make ati_remote

 * ignore signals coming from remote controls transmitting on channel 4, but

 * accept all other channels.

 *

 * Or, set channel_mask = 65533, (0xFFFD), and all channels except 1 will be

 * ignored.

 *

 * The default is 0 (respond to all channels). Bit 0 and bits 17-32 of this

 * parameter are unused.

 *

 */

#include <linux/kernel.h>

#include <linux/errno.h>

#include <linux/init.h>

#include <linux/slab.h>

#include <linux/module.h>

#include <linux/moduleparam.h>

#include <linux/usb/input.h>

#include <linux/wait.h>

#include <linux/jiffies.h>

/*

 * Module and Version Information, Module Parameters

 */

#define ATI_REMOTE_VENDOR_ID    0x0bc7

#define ATI_REMOTE_PRODUCT_ID   0x004

#define LOLA_REMOTE_PRODUCT_ID  0x002

#define MEDION_REMOTE_PRODUCT_ID 0x006

#define DRIVER_VERSION          "2.2.1"

#define DRIVER_AUTHOR           "Torrey Hoffman <thoffman@arnor.net>"

#define DRIVER_DESC             "ATI/X10 RF USB Remote Control"

#define NAME_BUFSIZE      80    /* size of product name, path buffers */

#define DATA_BUFSIZE      63    /* size of URB data buffers */

/*

 * Duplicate event filtering time.

 * Sequential, identical KIND_FILTERED inputs with less than

 * FILTER_TIME milliseconds between them are considered as repeat

 * events. The hardware generates 5 events for the first keypress

 * and we have to take this into account for an accurate repeat

 * behaviour.

 */

#define FILTER_TIME     60 /* msec */

#define REPEAT_DELAY    500 /* msec */

static unsigned long channel_mask;

module_param(channel_mask, ulong, 0644);

MODULE_PARM_DESC(channel_mask, "Bitmask of remote control channels to ignore");

static int debug;

module_param(debug, int, 0644);

MODULE_PARM_DESC(debug, "Enable extra debug messages and information");

static int repeat_filter = FILTER_TIME;

module_param(repeat_filter, int, 0644);

MODULE_PARM_DESC(repeat_filter, "Repeat filter time, default = 60 msec");

static int repeat_delay = REPEAT_DELAY;

module_param(repeat_delay, int, 0644);

MODULE_PARM_DESC(repeat_delay, "Delay before sending repeats, default = 500 msec");

#define dbginfo(dev, format, arg...) do { if (debug) dev_info(dev , format , ## arg); } while (0)

#undef err

#define err(format, arg...) printk(KERN_ERR format , ## arg)

static struct usb_device_id ati_remote_table[] = {

        { USB_DEVICE(ATI_REMOTE_VENDOR_ID, ATI_REMOTE_PRODUCT_ID) },

        { USB_DEVICE(ATI_REMOTE_VENDOR_ID, LOLA_REMOTE_PRODUCT_ID) },

        { USB_DEVICE(ATI_REMOTE_VENDOR_ID, MEDION_REMOTE_PRODUCT_ID) },

        {}      /* Terminating entry */

};

MODULE_DEVICE_TABLE(usb, ati_remote_table);

/* Get hi and low bytes of a 16-bits int */

#define HI(a)   ((unsigned char)((a) >> 8))

#define LO(a)   ((unsigned char)((a) & 0xff))

#define SEND_FLAG_IN_PROGRESS   1

#define SEND_FLAG_COMPLETE      2

/* Device initialization strings */

static char init1[] = { 0x01, 0x00, 0x20, 0x14 };

static char init2[] = { 0x01, 0x00, 0x20, 0x14, 0x20, 0x20, 0x20 };

struct ati_remote {

        struct input_dev *idev;

        struct usb_device *udev;

        struct usb_interface *interface;

        struct urb *irq_urb;

        struct urb *out_urb;

        struct usb_endpoint_descriptor *endpoint_in;

        struct usb_endpoint_descriptor *endpoint_out;

        unsigned char *inbuf;

        unsigned char *outbuf;

        dma_addr_t inbuf_dma;

        dma_addr_t outbuf_dma;

        unsigned char old_data[2];  /* Detect duplicate events */

        unsigned long old_jiffies;

        unsigned long acc_jiffies;  /* handle acceleration */

        unsigned long first_jiffies;

        unsigned int repeat_count;

        char name[NAME_BUFSIZE];

        char phys[NAME_BUFSIZE];

        wait_queue_head_t wait;

        int send_flags;

};

/* "Kinds" of messages sent from the hardware to the driver. */

#define KIND_END        0

#define KIND_LITERAL    1   /* Simply pass to input system */

#define KIND_FILTERED   2   /* Add artificial key-up events, drop keyrepeats */

#define KIND_LU         3   /* Directional keypad diagonals - left up, */

#define KIND_RU         4   /*   right up,  */

#define KIND_LD         5   /*   left down, */

#define KIND_RD         6   /*   right down */

#define KIND_ACCEL      7   /* Directional keypad - left, right, up, down.*/

/* Translation table from hardware messages to input events. */

static const struct {

        short kind;

        unsigned char data1, data2;

        int type;

        unsigned int code;

        int value;

}  ati_remote_tbl[] = {

        /* Directional control pad axes */

        {KIND_ACCEL,   0x35, 0x70, EV_REL, REL_X, -1},   /* left */

        {KIND_ACCEL,   0x36, 0x71, EV_REL, REL_X, 1},    /* right */

        {KIND_ACCEL,   0x37, 0x72, EV_REL, REL_Y, -1},   /* up */

        {KIND_ACCEL,   0x38, 0x73, EV_REL, REL_Y, 1},    /* down */

        /* Directional control pad diagonals */

        {KIND_LU,      0x39, 0x74, EV_REL, 0, 0},        /* left up */

        {KIND_RU,      0x3a, 0x75, EV_REL, 0, 0},        /* right up */

        {KIND_LD,      0x3c, 0x77, EV_REL, 0, 0},        /* left down */

        {KIND_RD,      0x3b, 0x76, EV_REL, 0, 0},        /* right down */

        /* "Mouse button" buttons */

        {KIND_LITERAL, 0x3d, 0x78, EV_KEY, BTN_LEFT, 1}, /* left btn down */

        {KIND_LITERAL, 0x3e, 0x79, EV_KEY, BTN_LEFT, 0}, /* left btn up */

        {KIND_LITERAL, 0x41, 0x7c, EV_KEY, BTN_RIGHT, 1},/* right btn down */

        {KIND_LITERAL, 0x42, 0x7d, EV_KEY, BTN_RIGHT, 0},/* right btn up */

        /* Artificial "doubleclick" events are generated by the hardware.

         * They are mapped to the "side" and "extra" mouse buttons here. */

        {KIND_FILTERED, 0x3f, 0x7a, EV_KEY, BTN_SIDE, 1}, /* left dblclick */

        {KIND_FILTERED, 0x43, 0x7e, EV_KEY, BTN_EXTRA, 1},/* right dblclick */

        /* keyboard. */

        {KIND_FILTERED, 0xd2, 0x0d, EV_KEY, KEY_1, 1},

        {KIND_FILTERED, 0xd3, 0x0e, EV_KEY, KEY_2, 1},

        {KIND_FILTERED, 0xd4, 0x0f, EV_KEY, KEY_3, 1},

        {KIND_FILTERED, 0xd5, 0x10, EV_KEY, KEY_4, 1},

        {KIND_FILTERED, 0xd6, 0x11, EV_KEY, KEY_5, 1},

        {KIND_FILTERED, 0xd7, 0x12, EV_KEY, KEY_6, 1},

        {KIND_FILTERED, 0xd8, 0x13, EV_KEY, KEY_7, 1},

        {KIND_FILTERED, 0xd9, 0x14, EV_KEY, KEY_8, 1},

        {KIND_FILTERED, 0xda, 0x15, EV_KEY, KEY_9, 1},

        {KIND_FILTERED, 0xdc, 0x17, EV_KEY, KEY_0, 1},

        {KIND_FILTERED, 0xc5, 0x00, EV_KEY, KEY_A, 1},

        {KIND_FILTERED, 0xc6, 0x01, EV_KEY, KEY_B, 1},

        {KIND_FILTERED, 0xde, 0x19, EV_KEY, KEY_C, 1},

        {KIND_FILTERED, 0xe0, 0x1b, EV_KEY, KEY_D, 1},

        {KIND_FILTERED, 0xe6, 0x21, EV_KEY, KEY_E, 1},

        {KIND_FILTERED, 0xe8, 0x23, EV_KEY, KEY_F, 1},

        /* "special" keys */

        {KIND_FILTERED, 0xdd, 0x18, EV_KEY, KEY_KPENTER, 1},    /* "check" */

        {KIND_FILTERED, 0xdb, 0x16, EV_KEY, KEY_MENU, 1},       /* "menu" */

        {KIND_FILTERED, 0xc7, 0x02, EV_KEY, KEY_POWER, 1},      /* Power */

        {KIND_FILTERED, 0xc8, 0x03, EV_KEY, KEY_TV, 1},         /* TV */

        {KIND_FILTERED, 0xc9, 0x04, EV_KEY, KEY_DVD, 1},        /* DVD */

        {KIND_FILTERED, 0xca, 0x05, EV_KEY, KEY_WWW, 1},        /* WEB */

        {KIND_FILTERED, 0xcb, 0x06, EV_KEY, KEY_BOOKMARKS, 1},  /* "book" */

        {KIND_FILTERED, 0xcc, 0x07, EV_KEY, KEY_EDIT, 1},       /* "hand" */

        {KIND_FILTERED, 0xe1, 0x1c, EV_KEY, KEY_COFFEE, 1},     /* "timer" */

        {KIND_FILTERED, 0xe5, 0x20, EV_KEY, KEY_FRONT, 1},      /* "max" */

        {KIND_FILTERED, 0xe2, 0x1d, EV_KEY, KEY_LEFT, 1},       /* left */

        {KIND_FILTERED, 0xe4, 0x1f, EV_KEY, KEY_RIGHT, 1},      /* right */

        {KIND_FILTERED, 0xe7, 0x22, EV_KEY, KEY_DOWN, 1},       /* down */

        {KIND_FILTERED, 0xdf, 0x1a, EV_KEY, KEY_UP, 1},         /* up */

        {KIND_FILTERED, 0xe3, 0x1e, EV_KEY, KEY_OK, 1},         /* "OK" */

        {KIND_FILTERED, 0xce, 0x09, EV_KEY, KEY_VOLUMEDOWN, 1}, /* VOL + */

        {KIND_FILTERED, 0xcd, 0x08, EV_KEY, KEY_VOLUMEUP, 1},   /* VOL - */

        {KIND_FILTERED, 0xcf, 0x0a, EV_KEY, KEY_MUTE, 1},       /* MUTE  */

        {KIND_FILTERED, 0xd0, 0x0b, EV_KEY, KEY_CHANNELUP, 1},  /* CH + */

        {KIND_FILTERED, 0xd1, 0x0c, EV_KEY, KEY_CHANNELDOWN, 1},/* CH - */

        {KIND_FILTERED, 0xec, 0x27, EV_KEY, KEY_RECORD, 1},     /* ( o) red */

        {KIND_FILTERED, 0xea, 0x25, EV_KEY, KEY_PLAY, 1},       /* ( >) */

        {KIND_FILTERED, 0xe9, 0x24, EV_KEY, KEY_REWIND, 1},     /* (<<) */

        {KIND_FILTERED, 0xeb, 0x26, EV_KEY, KEY_FORWARD, 1},    /* (>>) */

        {KIND_FILTERED, 0xed, 0x28, EV_KEY, KEY_STOP, 1},       /* ([]) */

        {KIND_FILTERED, 0xee, 0x29, EV_KEY, KEY_PAUSE, 1},      /* ('') */

        {KIND_FILTERED, 0xf0, 0x2b, EV_KEY, KEY_PREVIOUS, 1},   /* (<-) */

        {KIND_FILTERED, 0xef, 0x2a, EV_KEY, KEY_NEXT, 1},       /* (>+) */

        {KIND_FILTERED, 0xf2, 0x2D, EV_KEY, KEY_INFO, 1},       /* PLAYING */

        {KIND_FILTERED, 0xf3, 0x2E, EV_KEY, KEY_HOME, 1},       /* TOP */

        {KIND_FILTERED, 0xf4, 0x2F, EV_KEY, KEY_END, 1},        /* END */

        {KIND_FILTERED, 0xf5, 0x30, EV_KEY, KEY_SELECT, 1},     /* SELECT */

        {KIND_END, 0x00, 0x00, EV_MAX + 1, 0, 0}

};

/* Local function prototypes */

static void ati_remote_dump             (unsigned char *data, unsigned int actual_length);

static int ati_remote_open              (struct input_dev *inputdev);

static void ati_remote_close            (struct input_dev *inputdev);

static int ati_remote_sendpacket        (struct ati_remote *ati_remote, u16 cmd, unsigned char *data);

static void ati_remote_irq_out          (struct urb *urb);

static void ati_remote_irq_in           (struct urb *urb);

static void ati_remote_input_report     (struct urb *urb);

static int ati_remote_initialize        (struct ati_remote *ati_remote);

static int ati_remote_probe             (struct usb_interface *interface, const struct usb_device_id *id);

static void ati_remote_disconnect       (struct usb_interface *interface);

/* usb specific object to register with the usb subsystem */

static struct usb_driver ati_remote_driver = {

        .name         = "ati_remote",

        .probe        = ati_remote_probe,

        .disconnect   = ati_remote_disconnect,

        .id_table     = ati_remote_table,

};

/*

 *      ati_remote_dump_input

 */

static void ati_remote_dump(unsigned char *data, unsigned int len)

{

        if ((len == 1) && (data[0] != (unsigned char)0xff) && (data[0] != 0x00))

                warn("Weird byte 0x%02x", data[0]);

        else if (len == 4)

                warn("Weird key %02x %02x %02x %02x",

                     data[0], data[1], data[2], data[3]);

        else

                warn("Weird data, len=%d %02x %02x %02x %02x %02x %02x ...",

                     len, data[0], data[1], data[2], data[3], data[4], data[5]);

}

/*

 *      ati_remote_open

 */

static int ati_remote_open(struct input_dev *inputdev)

{

        struct ati_remote *ati_remote = input_get_drvdata(inputdev);

        /* On first open, submit the read urb which was set up previously. */

        ati_remote->irq_urb->dev = ati_remote->udev;

        if (usb_submit_urb(ati_remote->irq_urb, GFP_KERNEL)) {

                dev_err(&ati_remote->interface->dev,

                        "%s: usb_submit_urb failed!\n", __FUNCTION__);

                return -EIO;

        }

        return 0;

}

/*

 *      ati_remote_close

 */

static void ati_remote_close(struct input_dev *inputdev)

{

        struct ati_remote *ati_remote = input_get_drvdata(inputdev);

        usb_kill_urb(ati_remote->irq_urb);

}

/*

 *              ati_remote_irq_out

 */

static void ati_remote_irq_out(struct urb *urb)

{

        struct ati_remote *ati_remote = urb->context;

        if (urb->status) {

                dev_dbg(&ati_remote->interface->dev, "%s: status %d\n",

                        __FUNCTION__, urb->status);

                return;

        }

        ati_remote->send_flags |= SEND_FLAG_COMPLETE;

        wmb();

        wake_up(&ati_remote->wait);

}

/*

 *      ati_remote_sendpacket

 *

 *      Used to send device initialization strings

 */

static int ati_remote_sendpacket(struct ati_remote *ati_remote, u16 cmd, unsigned char *data)

{

        int retval = 0;

        /* Set up out_urb */

        memcpy(ati_remote->out_urb->transfer_buffer + 1, data, LO(cmd));

        ((char *) ati_remote->out_urb->transfer_buffer)[0] = HI(cmd);

        ati_remote->out_urb->transfer_buffer_length = LO(cmd) + 1;

        ati_remote->out_urb->dev = ati_remote->udev;

        ati_remote->send_flags = SEND_FLAG_IN_PROGRESS;

        retval = usb_submit_urb(ati_remote->out_urb, GFP_ATOMIC);

        if (retval) {

                dev_dbg(&ati_remote->interface->dev,

                         "sendpacket: usb_submit_urb failed: %d\n", retval);

                return retval;

        }

        wait_event_timeout(ati_remote->wait,

                ((ati_remote->out_urb->status != -EINPROGRESS) ||

                        (ati_remote->send_flags & SEND_FLAG_COMPLETE)),

                HZ);

        usb_kill_urb(ati_remote->out_urb);

        return retval;

}

/*

 *      ati_remote_event_lookup

 */

static int ati_remote_event_lookup(int rem, unsigned char d1, unsigned char d2)

{

        int i;

        for (i = 0; ati_remote_tbl[i].kind != KIND_END; i++) {

                /*

                 * Decide if the table entry matches the remote input.

                 */

                if ((((ati_remote_tbl[i].data1 & 0x0f) == (d1 & 0x0f))) &&

                    ((((ati_remote_tbl[i].data1 >> 4) -

                       (d1 >> 4) + rem) & 0x0f) == 0x0f) &&

                    (ati_remote_tbl[i].data2 == d2))

                        return i;

        }

        return -1;

}

/*

 *      ati_remote_compute_accel

 *

 * Implements acceleration curve for directional control pad

 * If elapsed time since last event is > 1/4 second, user "stopped",

 * so reset acceleration. Otherwise, user is probably holding the control

 * pad down, so we increase acceleration, ramping up over two seconds to

 * a maximum speed.

 */

static int ati_remote_compute_accel(struct ati_remote *ati_remote)

{

        static const char accel[] = { 1, 2, 4, 6, 9, 13, 20 };

        unsigned long now = jiffies;

        int acc;

        if (time_after(now, ati_remote->old_jiffies + msecs_to_jiffies(250))) {

                acc = 1;

                ati_remote->acc_jiffies = now;

        }

        else if (time_before(now, ati_remote->acc_jiffies + msecs_to_jiffies(125)))

                acc = accel[0];

        else if (time_before(now, ati_remote->acc_jiffies + msecs_to_jiffies(250)))

                acc = accel[1];

        else if (time_before(now, ati_remote->acc_jiffies + msecs_to_jiffies(500)))

                acc = accel[2];

        else if (time_before(now, ati_remote->acc_jiffies + msecs_to_jiffies(1000)))

                acc = accel[3];

        else if (time_before(now, ati_remote->acc_jiffies + msecs_to_jiffies(1500)))

                acc = accel[4];

        else if (time_before(now, ati_remote->acc_jiffies + msecs_to_jiffies(2000)))

                acc = accel[5];

        else

                acc = accel[6];

        return acc;

}

/*

 *      ati_remote_report_input

 */

static void ati_remote_input_report(struct urb *urb)

{

        struct ati_remote *ati_remote = urb->context;

        unsigned char *data= ati_remote->inbuf;

        struct input_dev *dev = ati_remote->idev;

        int index, acc;

        int remote_num;

        /* Deal with strange looking inputs */

        if ( (urb->actual_length != 4) || (data[0] != 0x14) ||

                ((data[3] & 0x0f) != 0x00) ) {

                ati_remote_dump(data, urb->actual_length);

                return;

        }

        /* Mask unwanted remote channels.  */

        /* note: remote_num is 0-based, channel 1 on remote == 0 here */

        remote_num = (data[3] >> 4) & 0x0f;

        if (channel_mask & (1 << (remote_num + 1))) {

                dbginfo(&ati_remote->interface->dev,

                        "Masked input from channel 0x%02x: data %02x,%02x, mask= 0x%02lx\n",

                        remote_num, data[1], data[2], channel_mask);

                return;

        }

        /* Look up event code index in translation table */

        index = ati_remote_event_lookup(remote_num, data[1], data[2]);

        if (index < 0) {

                dev_warn(&ati_remote->interface->dev,

                         "Unknown input from channel 0x%02x: data %02x,%02x\n",

                         remote_num, data[1], data[2]);

                return;

        }

        dbginfo(&ati_remote->interface->dev,

                "channel 0x%02x; data %02x,%02x; index %d; keycode %d\n",

                remote_num, data[1], data[2], index, ati_remote_tbl[index].code);

        if (ati_remote_tbl[index].kind == KIND_LITERAL) {

                input_event(dev, ati_remote_tbl[index].type,

                        ati_remote_tbl[index].code,

                        ati_remote_tbl[index].value);

                input_sync(dev);

                ati_remote->old_jiffies = jiffies;

                return;

        }

        if (ati_remote_tbl[index].kind == KIND_FILTERED) {

                unsigned long now = jiffies;

                /* Filter duplicate events which happen "too close" together. */

                if (ati_remote->old_data[0] == data[1] &&

                    ati_remote->old_data[1] == data[2] &&

                    time_before(now, ati_remote->old_jiffies +

                                     msecs_to_jiffies(repeat_filter))) {

                        ati_remote->repeat_count++;

                } else {

                        ati_remote->repeat_count = 0;

                        ati_remote->first_jiffies = now;

                }

                ati_remote->old_data[0] = data[1];

                ati_remote->old_data[1] = data[2];

                ati_remote->old_jiffies = now;

                /* Ensure we skip at least the 4 first duplicate events (generated

                 * by a single keypress), and continue skipping until repeat_delay

                 * msecs have passed

                 */

                if (ati_remote->repeat_count > 0 &&

                    (ati_remote->repeat_count < 5 ||

                     time_before(now, ati_remote->first_jiffies +

                                      msecs_to_jiffies(repeat_delay))))

                        return;

                input_event(dev, ati_remote_tbl[index].type,

                        ati_remote_tbl[index].code, 1);

                input_sync(dev);

                input_event(dev, ati_remote_tbl[index].type,

                        ati_remote_tbl[index].code, 0);

                input_sync(dev);

        } else {

                /*

                 * Other event kinds are from the directional control pad, and have an

                 * acceleration factor applied to them.  Without this acceleration, the

                 * control pad is mostly unusable.

                 */

                acc = ati_remote_compute_accel(ati_remote);

                switch (ati_remote_tbl[index].kind) {

                case KIND_ACCEL:

                        input_event(dev, ati_remote_tbl[index].type,

                                ati_remote_tbl[index].code,

                                ati_remote_tbl[index].value * acc);

                        break;

                case KIND_LU:

                        input_report_rel(dev, REL_X, -acc);

                        input_report_rel(dev, REL_Y, -acc);

                        break;

                case KIND_RU:

                        input_report_rel(dev, REL_X, acc);

                        input_report_rel(dev, REL_Y, -acc);

                        break;

                case KIND_LD:

                        input_report_rel(dev, REL_X, -acc);

                        input_report_rel(dev, REL_Y, acc);

                        break;

                case KIND_RD:

                        input_report_rel(dev, REL_X, acc);

                        input_report_rel(dev, REL_Y, acc);

                        break;

                default:

                        dev_dbg(&ati_remote->interface->dev, "ati_remote kind=%d\n",

                                ati_remote_tbl[index].kind);

                }

                input_sync(dev);

                ati_remote->old_jiffies = jiffies;

                ati_remote->old_data[0] = data[1];

                ati_remote->old_data[1] = data[2];

        }

}

/*

 *      ati_remote_irq_in

 */

static void ati_remote_irq_in(struct urb *urb)

{

        struct ati_remote *ati_remote = urb->context;

        int retval;

        switch (urb->status) {

        case 0:                  /* success */

                ati_remote_input_report(urb);

                break;

        case -ECONNRESET:       /* unlink */

        case -ENOENT:

        case -ESHUTDOWN:

                dev_dbg(&ati_remote->interface->dev, "%s: urb error status, unlink? \n",

                        __FUNCTION__);

                return;

        default:                /* error */

                dev_dbg(&ati_remote->interface->dev, "%s: Nonzero urb status %d\n",

                        __FUNCTION__, urb->status);

        }

        retval = usb_submit_urb(urb, GFP_ATOMIC);

        if (retval)

                dev_err(&ati_remote->interface->dev, "%s: usb_submit_urb()=%d\n",

                        __FUNCTION__, retval);