Linux-2.6.12-rc2

Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.

Let it rip!

1 files changed, 850 insertions, 0 deletions

diff --git a/drivers/usb/input/ati_remote.c b/drivers/usb/input/ati_remote.c
new file mode 100644
index 00000000000..355add5c29f
--- /dev/null
+++ b/drivers/usb/input/ati_remote.c
@@ -0,0 +1,850 @@
+/* 
+ *  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/config.h>
+#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/input.h>
+#include <linux/usb.h>
+#include <linux/wait.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 */
+#define ATI_INPUTNUM      1     /* Which input device to register as */
+
+static unsigned long channel_mask = 0;
+module_param(channel_mask, ulong, 0444);
+MODULE_PARM_DESC(channel_mask, "Bitmask of remote control channels to ignore");
+
+static int debug = 0;
+module_param(debug, int, 0444);
+MODULE_PARM_DESC(debug, "Enable extra debug messages and information");
+
+#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 };
+
+/* Acceleration curve for directional control pad */
+static char accel[] = { 1, 2, 4, 6, 9, 13, 20 };
+
+/* Duplicate event filtering time. 
+ * Sequential, identical KIND_FILTERED inputs with less than
+ * FILTER_TIME jiffies 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.
+ * (HZ / 20) == 50 ms and works well for me.
+ */
+#define FILTER_TIME (HZ / 20)
+
+static DECLARE_MUTEX(disconnect_sem);
+
+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;
+
+        int open;                   /* open counter */
+        
+        unsigned char old_data[2];  /* Detect duplicate events */
+        unsigned long old_jiffies;
+        unsigned long acc_jiffies;  /* handle acceleration */
+        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 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 void ati_remote_delete           (struct ati_remote *dev);
+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, struct pt_regs *regs);
+static void ati_remote_irq_in           (struct urb *urb, struct pt_regs *regs);
+static void ati_remote_input_report     (struct urb *urb, struct pt_regs *regs);
+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 = {
+        .owner        = THIS_MODULE,
+        .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 = inputdev->private;
+        int retval = 0;
+
+        down(&disconnect_sem);
+
+        if (ati_remote->open++)
+                goto exit;
+
+        /* 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__);
+                ati_remote->open--;
+                retval = -EIO;
+        }
+
+exit:
+        up(&disconnect_sem);
+        return retval;
+}
+
+/*
+ *      ati_remote_close
+ */
+static void ati_remote_close(struct input_dev *inputdev)
+{
+        struct ati_remote *ati_remote = inputdev->private;
+        
+        if (!--ati_remote->open)
+                usb_kill_urb(ati_remote->irq_urb);
+}
+
+/*
+ *              ati_remote_irq_out
+ */
+static void ati_remote_irq_out(struct urb *urb, struct pt_regs *regs)
+{
+        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_report_input
+ */
+static void ati_remote_input_report(struct urb *urb, struct pt_regs *regs)      
+{
+        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_regs(dev, regs);
+                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) {
+                /* Filter duplicate events which happen "too close" together. */
+                if ((ati_remote->old_data[0] == data[1]) && 
+                        (ati_remote->old_data[1] == data[2]) && 
+                        ((ati_remote->old_jiffies + FILTER_TIME) > jiffies)) {
+                        ati_remote->repeat_count++;
+                } 
+                else {
+                        ati_remote->repeat_count = 0;
+                }
+                
+                ati_remote->old_data[0] = data[1];
+                ati_remote->old_data[1] = data[2];
+                ati_remote->old_jiffies = jiffies;
+
+                if ((ati_remote->repeat_count > 0)
+                    && (ati_remote->repeat_count < 5))
+                        return;
+                
+
+                input_regs(dev, regs);
+                input_event(dev, ati_remote_tbl[index].type,
+                        ati_remote_tbl[index].code, 1);
+                input_event(dev, ati_remote_tbl[index].type,
+                        ati_remote_tbl[index].code, 0);
+                input_sync(dev);
+
+                return;
+        }                       
+        
+        /* 
+         * 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.
+         * 
+         * 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.  The acceleration curve is #defined above.
+         */
+        if ((jiffies - ati_remote->old_jiffies) > (HZ >> 2)) {
+                acc = 1;
+                ati_remote->acc_jiffies = jiffies;
+        }
+        else if ((jiffies - ati_remote->acc_jiffies) < (HZ >> 3))  acc = accel[0];
+        else if ((jiffies - ati_remote->acc_jiffies) < (HZ >> 2))  acc = accel[1];
+        else if ((jiffies - ati_remote->acc_jiffies) < (HZ >> 1))  acc = accel[2];
+        else if ((jiffies - ati_remote->acc_jiffies) < HZ )        acc = accel[3];
+        else if ((jiffies - ati_remote->acc_jiffies) < HZ+(HZ>>1)) acc = accel[4];
+        else if ((jiffies - ati_remote->acc_jiffies) < (HZ << 1))  acc = accel[5];
+        else acc = accel[6];
+
+        input_regs(dev, regs);
+        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 pt_regs *regs)
+{
+        struct ati_remote *ati_remote = urb->context;
+        int retval;
+
+        switch (urb->status) {
+        case 0:                 /* success */
+                ati_remote_input_report(urb, regs);
+                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, SLAB_ATOMIC);
+        if (retval)
+                dev_err(&ati_remote->interface->dev, "%s: usb_submit_urb()=%d\n",
+                        __FUNCTION__, retval);
+}
+
+/*
+ *      ati_remote_delete
+ */
+static void ati_remote_delete(struct ati_remote *ati_remote)
+{
+        if (!ati_remote) return;
+
+        if (ati_remote->irq_urb)
+                usb_kill_urb(ati_remote->irq_urb);
+
+        if (ati_remote->out_urb)
+                usb_kill_urb(ati_remote->out_urb);
+
+        input_unregister_device(&ati_remote->idev);
+
+        if (ati_remote->inbuf)
+                usb_buffer_free(ati_remote->udev, DATA_BUFSIZE, 
+                                ati_remote->inbuf, ati_remote->inbuf_dma);
+                
+        if (ati_remote->outbuf)
+                usb_buffer_free(ati_remote->udev, DATA_BUFSIZE, 
+                                ati_remote->inbuf, ati_remote->outbuf_dma);
+        
+        if (ati_remote->irq_urb)
+                usb_free_urb(ati_remote->irq_urb);
+        
+        if (ati_remote->out_urb)
+                usb_free_urb(ati_remote->out_urb);
+
+        kfree(ati_remote);
+}
+
+static void ati_remote_input_init(struct ati_remote *ati_remote)
+{
+        struct input_dev *idev = &(ati_remote->idev);
+        int i;
+
+        idev->evbit[0] = BIT(EV_KEY) | BIT(EV_REL);
+        idev->keybit[LONG(BTN_MOUSE)] = ( BIT(BTN_LEFT) | BIT(BTN_RIGHT) | 
+                                          BIT(BTN_SIDE) | BIT(BTN_EXTRA) );
+        idev->relbit[0] = BIT(REL_X) | BIT(REL_Y);
+        for (i = 0; ati_remote_tbl[i].kind != KIND_END; i++)
+                if (ati_remote_tbl[i].type == EV_KEY)
+                        set_bit(ati_remote_tbl[i].code, idev->keybit);
+        
+        idev->private = ati_remote;
+        idev->open = ati_remote_open;
+        idev->close = ati_remote_close;
+        
+        idev->name = ati_remote->name;
+        idev->phys = ati_remote->phys;
+        
+        idev->id.bustype = BUS_USB;             
+        idev->id.vendor = le16_to_cpu(ati_remote->udev->descriptor.idVendor);
+        idev->id.product = le16_to_cpu(ati_remote->udev->descriptor.idProduct);
+        idev->id.version = le16_to_cpu(ati_remote->udev->descriptor.bcdDevice);
+}
+
+static int ati_remote_initialize(struct ati_remote *ati_remote)
+{
+        struct usb_device *udev = ati_remote->udev;
+        int pipe, maxp;
+                
+        init_waitqueue_head(&ati_remote->wait);
+
+        /* Set up irq_urb */
+        pipe = usb_rcvintpipe(udev, ati_remote->endpoint_in->bEndpointAddress);
+        maxp = usb_maxpacket(udev, pipe, usb_pipeout(pipe));
+        maxp = (maxp > DATA_BUFSIZE) ? DATA_BUFSIZE : maxp;
+        
+        usb_fill_int_urb(ati_remote->irq_urb, udev, pipe, ati_remote->inbuf, 
+                         maxp, ati_remote_irq_in, ati_remote, 
+                         ati_remote->endpoint_in->bInterval);
+        ati_remote->irq_urb->transfer_dma = ati_remote->inbuf_dma;
+        ati_remote->irq_urb->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;
+        
+        /* Set up out_urb */
+        pipe = usb_sndintpipe(udev, ati_remote->endpoint_out->bEndpointAddress);
+        maxp = usb_maxpacket(udev, pipe, usb_pipeout(pipe));
+        maxp = (maxp > DATA_BUFSIZE) ? DATA_BUFSIZE : maxp;
+
+        usb_fill_int_urb(ati_remote->out_urb, udev, pipe, ati_remote->outbuf, 
+                         maxp, ati_remote_irq_out, ati_remote, 
+                         ati_remote->endpoint_out->bInterval);
+        ati_remote->out_urb->transfer_dma = ati_remote->outbuf_dma;
+        ati_remote->out_urb->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;
+
+        /* send initialization strings */
+        if ((ati_remote_sendpacket(ati_remote, 0x8004, init1)) ||
+            (ati_remote_sendpacket(ati_remote, 0x8007, init2))) {
+                dev_err(&ati_remote->interface->dev, 
+                         "Initializing ati_remote hardware failed.\n");
+                return 1;
+        }
+        
+        return 0;
+}
+
+/*
+ *      ati_remote_probe
+ */
+static int ati_remote_probe(struct usb_interface *interface, const struct usb_device_id *id)
+{
+        struct usb_device *udev = interface_to_usbdev(interface);
+        struct ati_remote *ati_remote = NULL;
+        struct usb_host_interface *iface_host;
+        int retval = -ENOMEM;
+        char path[64];
+
+        /* Allocate and clear an ati_remote struct */
+        if (!(ati_remote = kmalloc(sizeof (struct ati_remote), GFP_KERNEL)))
+                return -ENOMEM;
+        memset(ati_remote, 0x00, sizeof (struct ati_remote));
+
+        iface_host = interface->cur_altsetting;
+        if (iface_host->desc.bNumEndpoints != 2) {
+                err("%s: Unexpected desc.bNumEndpoints\n", __FUNCTION__);
+                retval = -ENODEV;
+                goto error;
+        }
+
+        ati_remote->endpoint_in = &(iface_host->endpoint[0].desc);
+        ati_remote->endpoint_out = &(iface_host->endpoint[1].desc);
+        ati_remote->udev = udev;
+        ati_remote->interface = interface;
+
+        if (!(ati_remote->endpoint_in->bEndpointAddress & 0x80)) {
+                err("%s: Unexpected endpoint_in->bEndpointAddress\n", __FUNCTION__);
+                retval = -ENODEV;
+                goto error;
+        }
+        if ((ati_remote->endpoint_in->bmAttributes & 3) != 3) {
+                err("%s: Unexpected endpoint_in->bmAttributes\n", __FUNCTION__);
+                retval = -ENODEV;
+                goto error;
+        }
+        if (le16_to_cpu(ati_remote->endpoint_in->wMaxPacketSize) == 0) {
+                err("%s: endpoint_in message size==0? \n", __FUNCTION__);
+                retval = -ENODEV;
+                goto error;
+        }
+
+        /* Allocate URB buffers, URBs */
+        ati_remote->inbuf = usb_buffer_alloc(udev, DATA_BUFSIZE, SLAB_ATOMIC,
+                                             &ati_remote->inbuf_dma);
+        if (!ati_remote->inbuf)
+                goto error;
+
+        ati_remote->outbuf = usb_buffer_alloc(udev, DATA_BUFSIZE, SLAB_ATOMIC,
+                                              &ati_remote->outbuf_dma);
+        if (!ati_remote->outbuf)
+                goto error;
+
+        ati_remote->irq_urb = usb_alloc_urb(0, GFP_KERNEL);
+        if (!ati_remote->irq_urb)
+                goto error;
+
+        ati_remote->out_urb = usb_alloc_urb(0, GFP_KERNEL);
+        if (!ati_remote->out_urb)
+                goto error;
+
+        usb_make_path(udev, path, NAME_BUFSIZE);
+        sprintf(ati_remote->phys, "%s/input%d", path, ATI_INPUTNUM);
+        if (udev->manufacturer)
+                strcat(ati_remote->name, udev->manufacturer);
+
+        if (udev->product)
+                sprintf(ati_remote->name, "%s %s", ati_remote->name, udev->product);
+
+        if (!strlen(ati_remote->name))
+                sprintf(ati_remote->name, DRIVER_DESC "(%04x,%04x)",
+                        le16_to_cpu(ati_remote->udev->descriptor.idVendor), 
+                        le16_to_cpu(ati_remote->udev->descriptor.idProduct));
+
+        /* Device Hardware Initialization - fills in ati_remote->idev from udev. */
+        retval = ati_remote_initialize(ati_remote);
+        if (retval)
+                goto error;
+
+        /* Set up and register input device */
+        ati_remote_input_init(ati_remote);
+        input_register_device(&ati_remote->idev);
+
+        dev_info(&ati_remote->interface->dev, "Input registered: %s on %s\n", 
+                 ati_remote->name, path);
+
+        usb_set_intfdata(interface, ati_remote);
+        
+error:
+        if (retval)
+                ati_remote_delete(ati_remote);
+
+        return retval;
+}
+
+/*
+ *      ati_remote_disconnect
+ */
+static void ati_remote_disconnect(struct usb_interface *interface)
+{
+        struct ati_remote *ati_remote;
+
+        down(&disconnect_sem);
+
+        ati_remote = usb_get_intfdata(interface);
+        usb_set_intfdata(interface, NULL);
+        if (!ati_remote) {
+                warn("%s - null device?\n", __FUNCTION__);
+                return;
+        }
+        
+        ati_remote_delete(ati_remote);
+
+        up(&disconnect_sem);
+}
+
+/*
+ *      ati_remote_init
+ */
+static int __init ati_remote_init(void)
+{
+        int result;
+        
+        result = usb_register(&ati_remote_driver);
+        if (result)
+                err("usb_register error #%d\n", result);
+        else
+                info("Registered USB driver " DRIVER_DESC " v. " DRIVER_VERSION);
+
+        return result;
+}
+
+/*
+ *      ati_remote_exit
+ */
+static void __exit ati_remote_exit(void)
+{
+        usb_deregister(&ati_remote_driver);
+}
+
+/* 
+ *      module specification 
+ */
+
+module_init(ati_remote_init);
+module_exit(ati_remote_exit);
+
+MODULE_AUTHOR(DRIVER_AUTHOR);
+MODULE_DESCRIPTION(DRIVER_DESC);
+MODULE_LICENSE("GPL");