fedora core 6 1.2949 + vserver 2.2.0
[linux-2.6.git] / drivers / usb / misc / phidgetkit.c
index 605a3c8..371bf2b 100644 (file)
@@ -1,7 +1,8 @@
 /*
  * USB PhidgetInterfaceKit driver 1.0
  *
- * Copyright (C) 2004 Sean Young <sean@mess.org>
+ * Copyright (C) 2004, 2006 Sean Young <sean@mess.org>
+ * Copyright (C) 2005 Daniel Saakes <daniel@saakes.net>
  * Copyright (C) 2004 Greg Kroah-Hartman <greg@kroah.com>
  *
  * This program is free software; you can redistribute it and/or modify
@@ -12,7 +13,6 @@
  * This is a driver for the USB PhidgetInterfaceKit.
  */
 
-#include <linux/config.h>
 #include <linux/kernel.h>
 #include <linux/errno.h>
 #include <linux/init.h>
 #include <linux/module.h>
 #include <linux/usb.h>
 
+#include "phidget.h"
+
 #define DRIVER_AUTHOR "Sean Young <sean@mess.org>"
 #define DRIVER_DESC "USB PhidgetInterfaceKit Driver"
 
 #define USB_VENDOR_ID_GLAB             0x06c2
 #define USB_DEVICE_ID_INTERFACEKIT004  0x0040
+#define USB_DEVICE_ID_INTERFACEKIT01616        0x0044
 #define USB_DEVICE_ID_INTERFACEKIT888  0x0045
 #define USB_DEVICE_ID_INTERFACEKIT047  0x0051
 #define USB_DEVICE_ID_INTERFACEKIT088  0x0053
 #define USB_VENDOR_ID_WISEGROUP                0x0925
 #define USB_DEVICE_ID_INTERFACEKIT884  0x8201
 
-#define MAX_INTERFACES                 8
+#define MAX_INTERFACES                 16
+
+#define URB_INT_SIZE                   8
 
 struct driver_interfacekit {
        int sensors;
        int inputs;
        int outputs;
        int has_lcd;
+       int amnesiac;
 };
-#define ifkit(_sensors, _inputs, _outputs, _lcd)                       \
-static struct driver_interfacekit ph_##_sensors##_inputs##_outputs = { \
+
+#define ifkit(_sensors, _inputs, _outputs, _lcd, _amnesiac)            \
+{                                                                      \
        .sensors        = _sensors,                                     \
        .inputs         = _inputs,                                      \
        .outputs        = _outputs,                                     \
        .has_lcd        = _lcd,                                         \
+       .amnesiac       = _amnesiac                                     \
 };
-ifkit(0, 0, 4, 0);
-ifkit(8, 8, 8, 0);
-ifkit(0, 4, 7, 1);
-ifkit(8, 8, 4, 0);
-ifkit(0, 8, 8, 1);
 
-struct phidget_interfacekit {
+static const struct driver_interfacekit ph_004 = ifkit(0, 0, 4, 0, 0);
+static const struct driver_interfacekit ph_888n = ifkit(8, 8, 8, 0, 1);
+static const struct driver_interfacekit ph_888o = ifkit(8, 8, 8, 0, 0);
+static const struct driver_interfacekit ph_047 = ifkit(0, 4, 7, 1, 0);
+static const struct driver_interfacekit ph_884 = ifkit(8, 8, 4, 0, 0);
+static const struct driver_interfacekit ph_088 = ifkit(0, 8, 8, 1, 0);
+static const struct driver_interfacekit ph_01616 = ifkit(0, 16, 16, 0, 0);
+
+static unsigned long device_no;
+
+struct interfacekit {
        struct usb_device *udev;
        struct usb_interface *intf;
        struct driver_interfacekit *ifkit;
-       int outputs[MAX_INTERFACES];
-       int inputs[MAX_INTERFACES];
-       int sensors[MAX_INTERFACES];
+       struct device *dev;
+       unsigned long outputs;
+       int dev_no;
+       u8 inputs[MAX_INTERFACES];
+       u16 sensors[MAX_INTERFACES];
        u8 lcd_files_on;
 
        struct urb *irq;
        unsigned char *data;
        dma_addr_t data_dma;
+
+       struct delayed_work do_notify;
+       struct delayed_work do_resubmit;
+       unsigned long input_events;
+       unsigned long sensor_events;
 };
 
 static struct usb_device_id id_table[] = {
        {USB_DEVICE(USB_VENDOR_ID_GLAB, USB_DEVICE_ID_INTERFACEKIT004),
                .driver_info = (kernel_ulong_t)&ph_004},
-       {USB_DEVICE(USB_VENDOR_ID_GLAB, USB_DEVICE_ID_INTERFACEKIT888),
-               .driver_info = (kernel_ulong_t)&ph_888},
+       {USB_DEVICE_VER(USB_VENDOR_ID_GLAB, USB_DEVICE_ID_INTERFACEKIT888, 0, 0x814),
+               .driver_info = (kernel_ulong_t)&ph_888o},
+       {USB_DEVICE_VER(USB_VENDOR_ID_GLAB, USB_DEVICE_ID_INTERFACEKIT888, 0x0815, 0xffff),
+               .driver_info = (kernel_ulong_t)&ph_888n},
        {USB_DEVICE(USB_VENDOR_ID_GLAB, USB_DEVICE_ID_INTERFACEKIT047),
                .driver_info = (kernel_ulong_t)&ph_047},
        {USB_DEVICE(USB_VENDOR_ID_GLAB, USB_DEVICE_ID_INTERFACEKIT088),
                .driver_info = (kernel_ulong_t)&ph_088},
+       {USB_DEVICE(USB_VENDOR_ID_GLAB, USB_DEVICE_ID_INTERFACEKIT01616),
+               .driver_info = (kernel_ulong_t)&ph_01616},
        {USB_DEVICE(USB_VENDOR_ID_WISEGROUP, USB_DEVICE_ID_INTERFACEKIT884),
                .driver_info = (kernel_ulong_t)&ph_884},
        {}
 };
 MODULE_DEVICE_TABLE(usb, id_table);
 
-static int change_outputs(struct phidget_interfacekit *kit, int output_num, int enable)
+static int set_outputs(struct interfacekit *kit)
 {
-       unsigned char *buffer;
+       u8 *buffer;
        int retval;
-       int n;
 
-       buffer = kmalloc(4, GFP_KERNEL);
+       buffer = kzalloc(4, GFP_KERNEL);
        if (!buffer) {
-               dev_err(&kit->udev->dev, "%s - out of memory\n",
-                       __FUNCTION__);
+               dev_err(&kit->udev->dev, "%s - out of memory\n", __FUNCTION__);
                return -ENOMEM;
        }
+       buffer[0] = (u8)kit->outputs;
+       buffer[1] = (u8)(kit->outputs >> 8);
 
-       kit->outputs[output_num] = enable;
-       memset(buffer, 0, 4);
-       for (n=0; n<8; n++) {
-               if (kit->outputs[n]) {
-                       buffer[0] |= 1 << n;
-               }
-       }
-
-       dev_dbg(&kit->udev->dev, "sending data: %02x\n", buffer[0]);
+       dev_dbg(&kit->udev->dev, "sending data: 0x%04x\n", (u16)kit->outputs);
 
        retval = usb_control_msg(kit->udev,
                         usb_sndctrlpipe(kit->udev, 0),
@@ -114,13 +130,16 @@ static int change_outputs(struct phidget_interfacekit *kit, int output_num, int
                                retval);
        kfree(buffer);
 
+       if (kit->ifkit->amnesiac)
+               schedule_delayed_work(&kit->do_resubmit, HZ / 2);
+
        return retval < 0 ? retval : 0;
 }
 
-static int change_string(struct phidget_interfacekit *kit, const char *display, unsigned char row)
+static int change_string(struct interfacekit *kit, const char *display, unsigned char row)
 {
        unsigned char *buffer;
-        unsigned char *form_buffer;
+       unsigned char *form_buffer;
        int retval = -ENOMEM;
        int i,j, len, buf_ptr;
        
@@ -173,26 +192,29 @@ exit:
 }
 
 #define set_lcd_line(number)   \
-static ssize_t lcd_line_##number(struct device *dev, struct device_attribute *attr, const char *buf, size_t count)     \
-{                                                                                      \
-       struct usb_interface *intf = to_usb_interface(dev);                             \
-       struct phidget_interfacekit *kit = usb_get_intfdata(intf);                      \
-       change_string(kit, buf, number - 1);                                            \
-       return count;                                                                   \
-}                                                                                      \
-static DEVICE_ATTR(lcd_line_##number, S_IWUGO, NULL, lcd_line_##number);
+static ssize_t lcd_line_##number(struct device *dev,                   \
+                                       struct device_attribute *attr,  \
+                                       const char *buf, size_t count)  \
+{                                                                      \
+       struct interfacekit *kit = dev_get_drvdata(dev);                \
+       change_string(kit, buf, number - 1);                            \
+       return count;                                                   \
+}
+
+#define lcd_line_attr(number)                                          \
+       __ATTR(lcd_line_##number, S_IWUGO, NULL, lcd_line_##number)
+
 set_lcd_line(1);
 set_lcd_line(2);
 
 static ssize_t set_backlight(struct device *dev, struct device_attribute *attr, const char *buf, size_t count)
 {
-       struct usb_interface *intf = to_usb_interface(dev);
-       struct phidget_interfacekit *kit = usb_get_intfdata(intf);
+       struct interfacekit *kit = dev_get_drvdata(dev);
        int enabled;
        unsigned char *buffer;
        int retval = -ENOMEM;
        
-       buffer = kmalloc(8, GFP_KERNEL);
+       buffer = kzalloc(8, GFP_KERNEL);
        if (!buffer) {
                dev_err(&kit->udev->dev, "%s - out of memory\n", __FUNCTION__);
                goto exit;
@@ -202,7 +224,6 @@ static ssize_t set_backlight(struct device *dev, struct device_attribute *attr,
                retval = -EINVAL;
                goto exit;
        }
-       memset(buffer, 0x00, 8);
        if (enabled)
                buffer[0] = 0x01;
        buffer[7] = 0x11;
@@ -220,23 +241,30 @@ exit:
        kfree(buffer);
        return retval;
 }
-static DEVICE_ATTR(backlight, S_IWUGO, NULL, set_backlight);
 
-static void remove_lcd_files(struct phidget_interfacekit *kit)
+static struct device_attribute dev_lcd_line_attrs[] = {
+       lcd_line_attr(1),
+       lcd_line_attr(2),
+       __ATTR(backlight, S_IWUGO, NULL, set_backlight)
+};
+
+static void remove_lcd_files(struct interfacekit *kit)
 {
+       int i;
+
        if (kit->lcd_files_on) {
                dev_dbg(&kit->udev->dev, "Removing lcd files\n");
-               device_remove_file(&kit->intf->dev, &dev_attr_lcd_line_1);
-               device_remove_file(&kit->intf->dev, &dev_attr_lcd_line_2);
-               device_remove_file(&kit->intf->dev, &dev_attr_backlight);
+
+               for (i=0; i<ARRAY_SIZE(dev_lcd_line_attrs); i++)
+                       device_remove_file(kit->dev, &dev_lcd_line_attrs[i]);
        }
 }
 
 static ssize_t enable_lcd_files(struct device *dev, struct device_attribute *attr, const char *buf, size_t count)
 {
-       struct usb_interface *intf = to_usb_interface(dev);
-       struct phidget_interfacekit *kit = usb_get_intfdata(intf);
+       struct interfacekit *kit = dev_get_drvdata(dev);
        int enable;
+       int i, rc;
        
        if (kit->ifkit->has_lcd == 0)
                return -ENODEV;
@@ -247,9 +275,12 @@ static ssize_t enable_lcd_files(struct device *dev, struct device_attribute *att
        if (enable) {
                if (!kit->lcd_files_on) {
                        dev_dbg(&kit->udev->dev, "Adding lcd files\n");
-                       device_create_file(&kit->intf->dev, &dev_attr_lcd_line_1);
-                       device_create_file(&kit->intf->dev, &dev_attr_lcd_line_2);
-                       device_create_file(&kit->intf->dev, &dev_attr_backlight);
+                       for (i=0; i<ARRAY_SIZE(dev_lcd_line_attrs); i++) {
+                               rc = device_create_file(kit->dev,
+                                       &dev_lcd_line_attrs[i]);
+                               if (rc)
+                                       goto out;
+                       }
                        kit->lcd_files_on = 1;
                }
        } else {
@@ -260,15 +291,21 @@ static ssize_t enable_lcd_files(struct device *dev, struct device_attribute *att
        }
        
        return count;
+out:
+       while (i-- > 0)
+               device_remove_file(kit->dev, &dev_lcd_line_attrs[i]);
+
+       return rc;
 }
+
 static DEVICE_ATTR(lcd, S_IWUGO, NULL, enable_lcd_files);
 
-static void interfacekit_irq(struct urb *urb, struct pt_regs *regs)
+static void interfacekit_irq(struct urb *urb)
 {
-       struct phidget_interfacekit *kit = urb->context;
+       struct interfacekit *kit = urb->context;
        unsigned char *buffer = kit->data;
+       int i, level, sensor;
        int status;
-       int n;
 
        switch (urb->status) {
        case 0:                 /* success */
@@ -282,57 +319,135 @@ static void interfacekit_irq(struct urb *urb, struct pt_regs *regs)
                goto resubmit;
        }
 
-       for (n=0; n<8; n++) {
-               kit->inputs[n] = buffer[1] & (1 << n) ? 1 : 0;
+       /* digital inputs */
+       if (kit->ifkit->inputs == 16) {
+               for (i=0; i < 8; i++) {
+                       level = (buffer[0] >> i) & 1;
+                       if (kit->inputs[i] != level) {
+                               kit->inputs[i] = level;
+                               set_bit(i, &kit->input_events);
+                       }
+                       level = (buffer[1] >> i) & 1;
+                       if (kit->inputs[8 + i] != level) {
+                               kit->inputs[8 + i] = level;
+                               set_bit(8 + i, &kit->input_events);
+                       }
+               }
+       }
+       else if (kit->ifkit->inputs == 8) {
+               for (i=0; i < 8; i++) {
+                       level = (buffer[1] >> i) & 1;
+                       if (kit->inputs[i] != level) {
+                               kit->inputs[i] = level;
+                               set_bit(i, &kit->input_events);
+                       }
+               }
        }
 
-       if (buffer[0] & 1) {
-               kit->sensors[4] = buffer[2] + (buffer[3] & 0x0f) * 256;
-               kit->sensors[5] = buffer[4] + (buffer[3] & 0xf0) * 16;
-               kit->sensors[6] = buffer[5] + (buffer[6] & 0x0f) * 256;
-               kit->sensors[7] = buffer[7] + (buffer[6] & 0xf0) * 16;
-       } else {
-               kit->sensors[0] = buffer[2] + (buffer[3] & 0x0f) * 256;
-               kit->sensors[1] = buffer[4] + (buffer[3] & 0xf0) * 16;
-               kit->sensors[2] = buffer[5] + (buffer[6] & 0x0f) * 256;
-               kit->sensors[3] = buffer[7] + (buffer[6] & 0xf0) * 16;
+       /* analog inputs */
+       if (kit->ifkit->sensors) {
+               sensor = (buffer[0] & 1) ? 4 : 0;
+
+               level = buffer[2] + (buffer[3] & 0x0f) * 256;
+               if (level != kit->sensors[sensor]) {
+                       kit->sensors[sensor] = level;
+                       set_bit(sensor, &kit->sensor_events);
+               }
+               sensor++;
+               level = buffer[4] + (buffer[3] & 0xf0) * 16;
+               if (level != kit->sensors[sensor]) {
+                       kit->sensors[sensor] = level;
+                       set_bit(sensor, &kit->sensor_events);
+               }
+               sensor++;
+               level = buffer[5] + (buffer[6] & 0x0f) * 256;
+               if (level != kit->sensors[sensor]) {
+                       kit->sensors[sensor] = level;
+                       set_bit(sensor, &kit->sensor_events);
+               }
+               sensor++;
+               level = buffer[7] + (buffer[6] & 0xf0) * 16;
+               if (level != kit->sensors[sensor]) {
+                       kit->sensors[sensor] = level;
+                       set_bit(sensor, &kit->sensor_events);
+               }
        }
 
+       if (kit->input_events || kit->sensor_events)
+               schedule_delayed_work(&kit->do_notify, 0);
+
 resubmit:
-       status = usb_submit_urb(urb, SLAB_ATOMIC);
+       status = usb_submit_urb(urb, GFP_ATOMIC);
        if (status)
                err("can't resubmit intr, %s-%s/interfacekit0, status %d",
                        kit->udev->bus->bus_name,
                        kit->udev->devpath, status);
 }
 
+static void do_notify(struct work_struct *work)
+{
+       struct interfacekit *kit =
+               container_of(work, struct interfacekit, do_notify.work);
+       int i;
+       char sysfs_file[8];
+
+       for (i=0; i<kit->ifkit->inputs; i++) {
+               if (test_and_clear_bit(i, &kit->input_events)) {
+                       sprintf(sysfs_file, "input%d", i + 1);
+                       sysfs_notify(&kit->dev->kobj, NULL, sysfs_file);
+               }
+       }
+
+       for (i=0; i<kit->ifkit->sensors; i++) {
+               if (test_and_clear_bit(i, &kit->sensor_events)) {
+                       sprintf(sysfs_file, "sensor%d", i + 1);
+                       sysfs_notify(&kit->dev->kobj, NULL, sysfs_file);
+               }
+       }
+}
+
+static void do_resubmit(struct work_struct *work)
+{
+       struct interfacekit *kit =
+               container_of(work, struct interfacekit, do_resubmit.work);
+       set_outputs(kit);
+}
+
 #define show_set_output(value)         \
-static ssize_t set_output##value(struct device *dev, struct device_attribute *attr, const char *buf,   \
-                                                       size_t count)   \
+static ssize_t set_output##value(struct device *dev,                   \
+                                       struct device_attribute *attr,  \
+                                       const char *buf, size_t count)  \
 {                                                                      \
-       struct usb_interface *intf = to_usb_interface(dev);             \
-       struct phidget_interfacekit *kit = usb_get_intfdata(intf);      \
-       int enabled;                                                    \
+       struct interfacekit *kit = dev_get_drvdata(dev);                \
+       int enable;                                                     \
        int retval;                                                     \
                                                                        \
-       if (sscanf(buf, "%d", &enabled) < 1) {                          \
+       if (sscanf(buf, "%d", &enable) < 1)                             \
                return -EINVAL;                                         \
-       }                                                               \
                                                                        \
-       retval = change_outputs(kit, value - 1, enabled ? 1 : 0);       \
+       if (enable)                                                     \
+               set_bit(value - 1, &kit->outputs);                      \
+       else                                                            \
+               clear_bit(value - 1, &kit->outputs);                    \
+                                                                       \
+       retval = set_outputs(kit);                                      \
                                                                        \
        return retval ? retval : count;                                 \
 }                                                                      \
                                                                        \
-static ssize_t show_output##value(struct device *dev, struct device_attribute *attr, char *buf)        \
+static ssize_t show_output##value(struct device *dev,                  \
+                                       struct device_attribute *attr,  \
+                                       char *buf)                      \
 {                                                                      \
-       struct usb_interface *intf = to_usb_interface(dev);             \
-       struct phidget_interfacekit *kit = usb_get_intfdata(intf);      \
+       struct interfacekit *kit = dev_get_drvdata(dev);                \
                                                                        \
-       return sprintf(buf, "%d\n", kit->outputs[value - 1]);           \
-}                                                                      \
-static DEVICE_ATTR(output##value, S_IWUGO | S_IRUGO,                   \
-               show_output##value, set_output##value);
+       return sprintf(buf, "%d\n", !!test_bit(value - 1, &kit->outputs));\
+}
+
+#define output_attr(value)                                             \
+       __ATTR(output##value, S_IWUGO | S_IRUGO,                        \
+               show_output##value, set_output##value)
+
 show_set_output(1);
 show_set_output(2);
 show_set_output(3);
@@ -340,17 +455,34 @@ show_set_output(4);
 show_set_output(5);
 show_set_output(6);
 show_set_output(7);
-show_set_output(8);    /* should be MAX_INTERFACES - 1 */
+show_set_output(8);
+show_set_output(9);
+show_set_output(10);
+show_set_output(11);
+show_set_output(12);
+show_set_output(13);
+show_set_output(14);
+show_set_output(15);
+show_set_output(16);
+
+static struct device_attribute dev_output_attrs[] = {
+       output_attr(1), output_attr(2), output_attr(3), output_attr(4),
+       output_attr(5), output_attr(6), output_attr(7), output_attr(8),
+       output_attr(9), output_attr(10), output_attr(11), output_attr(12),
+       output_attr(13), output_attr(14), output_attr(15), output_attr(16)
+};
 
 #define show_input(value)      \
-static ssize_t show_input##value(struct device *dev, struct device_attribute *attr, char *buf) \
+static ssize_t show_input##value(struct device *dev,                   \
+                       struct device_attribute *attr, char *buf)       \
 {                                                                      \
-       struct usb_interface *intf = to_usb_interface(dev);             \
-       struct phidget_interfacekit *kit = usb_get_intfdata(intf);      \
+       struct interfacekit *kit = dev_get_drvdata(dev);                \
                                                                        \
-       return sprintf(buf, "%d\n", kit->inputs[value - 1]);            \
-}                                                                      \
-static DEVICE_ATTR(input##value, S_IRUGO, show_input##value, NULL);
+       return sprintf(buf, "%d\n", (int)kit->inputs[value - 1]);       \
+}
+
+#define input_attr(value)                                              \
+       __ATTR(input##value, S_IRUGO, show_input##value, NULL)
 
 show_input(1);
 show_input(2);
@@ -359,17 +491,35 @@ show_input(4);
 show_input(5);
 show_input(6);
 show_input(7);
-show_input(8);         /* should be MAX_INTERFACES - 1 */
+show_input(8);
+show_input(9);
+show_input(10);
+show_input(11);
+show_input(12);
+show_input(13);
+show_input(14);
+show_input(15);
+show_input(16);
+
+static struct device_attribute dev_input_attrs[] = {
+       input_attr(1), input_attr(2), input_attr(3), input_attr(4),
+       input_attr(5), input_attr(6), input_attr(7), input_attr(8),
+       input_attr(9), input_attr(10), input_attr(11), input_attr(12),
+       input_attr(13), input_attr(14), input_attr(15), input_attr(16)
+};
 
 #define show_sensor(value)     \
-static ssize_t show_sensor##value(struct device *dev, struct device_attribute *attr, char *buf)        \
+static ssize_t show_sensor##value(struct device *dev,                  \
+                                       struct device_attribute *attr,  \
+                                       char *buf)                      \
 {                                                                      \
-       struct usb_interface *intf = to_usb_interface(dev);             \
-       struct phidget_interfacekit *kit = usb_get_intfdata(intf);      \
+       struct interfacekit *kit = dev_get_drvdata(dev);                \
                                                                        \
-       return sprintf(buf, "%d\n", kit->sensors[value - 1]);           \
-}                                                                      \
-static DEVICE_ATTR(sensor##value, S_IRUGO, show_sensor##value, NULL);
+       return sprintf(buf, "%d\n", (int)kit->sensors[value - 1]);      \
+}
+
+#define sensor_attr(value)                                             \
+       __ATTR(sensor##value, S_IRUGO, show_sensor##value, NULL)
 
 show_sensor(1);
 show_sensor(2);
@@ -378,16 +528,22 @@ show_sensor(4);
 show_sensor(5);
 show_sensor(6);
 show_sensor(7);
-show_sensor(8);                /* should be MAX_INTERFACES - 1 */
+show_sensor(8);
+
+static struct device_attribute dev_sensor_attrs[] = {
+       sensor_attr(1), sensor_attr(2), sensor_attr(3), sensor_attr(4),
+       sensor_attr(5), sensor_attr(6), sensor_attr(7), sensor_attr(8)
+};
 
 static int interfacekit_probe(struct usb_interface *intf, const struct usb_device_id *id)
 {
        struct usb_device *dev = interface_to_usbdev(intf);
        struct usb_host_interface *interface;
        struct usb_endpoint_descriptor *endpoint;
-       struct phidget_interfacekit *kit;
+       struct interfacekit *kit;
        struct driver_interfacekit *ifkit;
-       int pipe, maxp;
+       int pipe, maxp, rc = -ENOMEM;
+       int bit, value, i;
 
        ifkit = (struct driver_interfacekit *)id->driver_info;
        if (!ifkit)
@@ -398,7 +554,7 @@ static int interfacekit_probe(struct usb_interface *intf, const struct usb_devic
                return -ENODEV;
 
        endpoint = &interface->endpoint[0].desc;
-       if (!(endpoint->bEndpointAddress & 0x80)) 
+       if (!usb_endpoint_dir_in(endpoint))
                return -ENODEV;
        /*
         * bmAttributes
@@ -406,151 +562,150 @@ static int interfacekit_probe(struct usb_interface *intf, const struct usb_devic
        pipe = usb_rcvintpipe(dev, endpoint->bEndpointAddress);
        maxp = usb_maxpacket(dev, pipe, usb_pipeout(pipe));
        
-       kit = kmalloc(sizeof(*kit), GFP_KERNEL);
-       if (kit  == NULL) {
-               dev_err(&intf->dev, "%s - out of memory\n", __FUNCTION__);
-               return -ENOMEM;
-       }
-       memset(kit, 0, sizeof(*kit));
-       kit->ifkit = ifkit;
+       kit = kzalloc(sizeof(*kit), GFP_KERNEL);
+       if (!kit)
+               goto out;
 
-       kit->data = usb_buffer_alloc(dev, 8, SLAB_ATOMIC, &kit->data_dma);
-       if (!kit->data) {
-               kfree(kit);
-               return -ENOMEM;
-       }
+       kit->dev_no = -1;
+       kit->ifkit = ifkit;
+       kit->data = usb_buffer_alloc(dev, URB_INT_SIZE, GFP_ATOMIC, &kit->data_dma);
+       if (!kit->data)
+               goto out;
 
        kit->irq = usb_alloc_urb(0, GFP_KERNEL);
-       if (!kit->irq) {
-               usb_buffer_free(dev, 8, kit->data, kit->data_dma);
-               kfree(kit);
-               return -ENOMEM;
-       }
+       if (!kit->irq)
+               goto out;
 
        kit->udev = usb_get_dev(dev);
        kit->intf = intf;
+       INIT_DELAYED_WORK(&kit->do_notify, do_notify);
+       INIT_DELAYED_WORK(&kit->do_resubmit, do_resubmit);
        usb_fill_int_urb(kit->irq, kit->udev, pipe, kit->data,
-                       (maxp > 8 ? 8 : maxp),
+                       maxp > URB_INT_SIZE ? URB_INT_SIZE : maxp,
                        interfacekit_irq, kit, endpoint->bInterval);
        kit->irq->transfer_dma = kit->data_dma;
        kit->irq->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;
 
        usb_set_intfdata(intf, kit);
 
+        do {
+                bit = find_first_zero_bit(&device_no, sizeof(device_no));
+                value = test_and_set_bit(bit, &device_no);
+        } while(value);
+        kit->dev_no = bit;
+
+        kit->dev = device_create(phidget_class, &kit->udev->dev, 0,
+                               "interfacekit%d", kit->dev_no);
+        if (IS_ERR(kit->dev)) {
+                rc = PTR_ERR(kit->dev);
+                kit->dev = NULL;
+                goto out;
+        }
+       dev_set_drvdata(kit->dev, kit);
+
        if (usb_submit_urb(kit->irq, GFP_KERNEL)) {
-               return -EIO;
+               rc = -EIO;
+               goto out;
        }
 
-       if (ifkit->outputs >= 4) {
-               device_create_file(&intf->dev, &dev_attr_output1);
-               device_create_file(&intf->dev, &dev_attr_output2);
-               device_create_file(&intf->dev, &dev_attr_output3);
-               device_create_file(&intf->dev, &dev_attr_output4);
-       }
-       if (ifkit->outputs == 8) {
-               device_create_file(&intf->dev, &dev_attr_output5);
-               device_create_file(&intf->dev, &dev_attr_output6);
-               device_create_file(&intf->dev, &dev_attr_output7);
-               device_create_file(&intf->dev, &dev_attr_output8);
-       } 
-
-       if (ifkit->inputs >= 4) {
-               device_create_file(&intf->dev, &dev_attr_input1);
-               device_create_file(&intf->dev, &dev_attr_input2);
-               device_create_file(&intf->dev, &dev_attr_input3);
-               device_create_file(&intf->dev, &dev_attr_input4);
-       }
-       if (ifkit->inputs == 8) {
-               device_create_file(&intf->dev, &dev_attr_input5);
-               device_create_file(&intf->dev, &dev_attr_input6);
-               device_create_file(&intf->dev, &dev_attr_input7);
-               device_create_file(&intf->dev, &dev_attr_input8);
+       for (i=0; i<ifkit->outputs; i++ ) {
+               rc = device_create_file(kit->dev, &dev_output_attrs[i]);
+               if (rc)
+                       goto out2;
        }
 
-       if (ifkit->sensors >= 4) {
-               device_create_file(&intf->dev, &dev_attr_sensor1);
-               device_create_file(&intf->dev, &dev_attr_sensor2);
-               device_create_file(&intf->dev, &dev_attr_sensor3);
-               device_create_file(&intf->dev, &dev_attr_sensor4);
-       }
-       if (ifkit->sensors >= 7) {
-               device_create_file(&intf->dev, &dev_attr_sensor5);
-               device_create_file(&intf->dev, &dev_attr_sensor6);
-               device_create_file(&intf->dev, &dev_attr_sensor7);
+       for (i=0; i<ifkit->inputs; i++ ) {
+               rc = device_create_file(kit->dev, &dev_input_attrs[i]);
+               if (rc)
+                       goto out3;
        }
-       if (ifkit->sensors == 8) {
-               device_create_file(&intf->dev, &dev_attr_sensor8);
+
+       for (i=0; i<ifkit->sensors; i++ ) {
+               rc = device_create_file(kit->dev, &dev_sensor_attrs[i]);
+               if (rc)
+                       goto out4;
        }
 
-       if (ifkit->has_lcd)
-               device_create_file(&intf->dev, &dev_attr_lcd);
+       if (ifkit->has_lcd) {
+               rc = device_create_file(kit->dev, &dev_attr_lcd);
+               if (rc)
+                       goto out4;
+
+       }
 
        dev_info(&intf->dev, "USB PhidgetInterfaceKit %d/%d/%d attached\n",
                        ifkit->sensors, ifkit->inputs, ifkit->outputs);
 
        return 0;
+
+out4:
+       while (i-- > 0)
+               device_remove_file(kit->dev, &dev_sensor_attrs[i]);
+
+       i = ifkit->inputs;
+out3:
+       while (i-- > 0)
+               device_remove_file(kit->dev, &dev_input_attrs[i]);
+
+       i = ifkit->outputs;
+out2:
+       while (i-- > 0)
+               device_remove_file(kit->dev, &dev_output_attrs[i]);
+out:
+       if (kit) {
+               usb_free_urb(kit->irq);
+               if (kit->data)
+                       usb_buffer_free(dev, URB_INT_SIZE, kit->data, kit->data_dma);
+               if (kit->dev)
+                       device_unregister(kit->dev);
+               if (kit->dev_no >= 0)
+                       clear_bit(kit->dev_no, &device_no);
+
+               kfree(kit);
+       }
+
+       return rc;
 }
 
 static void interfacekit_disconnect(struct usb_interface *interface)
 {
-       struct phidget_interfacekit *kit;
+       struct interfacekit *kit;
+       int i;
 
        kit = usb_get_intfdata(interface);
        usb_set_intfdata(interface, NULL);
        if (!kit)
                return;
 
-       if (kit->ifkit->outputs >= 4) {
-               device_remove_file(&interface->dev, &dev_attr_output1);
-               device_remove_file(&interface->dev, &dev_attr_output2);
-               device_remove_file(&interface->dev, &dev_attr_output3);
-               device_remove_file(&interface->dev, &dev_attr_output4);
-       }
-       if (kit->ifkit->outputs == 8) {
-               device_remove_file(&interface->dev, &dev_attr_output5);
-               device_remove_file(&interface->dev, &dev_attr_output6);
-               device_remove_file(&interface->dev, &dev_attr_output7);
-               device_remove_file(&interface->dev, &dev_attr_output8);
-       }
+       usb_kill_urb(kit->irq);
+       usb_free_urb(kit->irq);
+       usb_buffer_free(kit->udev, URB_INT_SIZE, kit->data, kit->data_dma);
 
-       if (kit->ifkit->inputs >= 4) {
-               device_remove_file(&interface->dev, &dev_attr_input1);
-               device_remove_file(&interface->dev, &dev_attr_input2);
-               device_remove_file(&interface->dev, &dev_attr_input3);
-               device_remove_file(&interface->dev, &dev_attr_input4);
-       }
-       if (kit->ifkit->inputs == 8) {
-               device_remove_file(&interface->dev, &dev_attr_input5);
-               device_remove_file(&interface->dev, &dev_attr_input6);
-               device_remove_file(&interface->dev, &dev_attr_input7);
-               device_remove_file(&interface->dev, &dev_attr_input8);
-       }
+       cancel_delayed_work(&kit->do_notify);
+       cancel_delayed_work(&kit->do_resubmit);
 
-       if (kit->ifkit->sensors >= 4) {
-               device_remove_file(&interface->dev, &dev_attr_sensor1);
-               device_remove_file(&interface->dev, &dev_attr_sensor2);
-               device_remove_file(&interface->dev, &dev_attr_sensor3);
-               device_remove_file(&interface->dev, &dev_attr_sensor4);
-       }
-       if (kit->ifkit->sensors >= 7) {
-               device_remove_file(&interface->dev, &dev_attr_sensor5);
-               device_remove_file(&interface->dev, &dev_attr_sensor6);
-               device_remove_file(&interface->dev, &dev_attr_sensor7);
-       }
-       if (kit->ifkit->sensors == 8) {
-               device_remove_file(&interface->dev, &dev_attr_sensor8);
+       for (i=0; i<kit->ifkit->outputs; i++)
+               device_remove_file(kit->dev, &dev_output_attrs[i]);
+
+       for (i=0; i<kit->ifkit->inputs; i++)
+               device_remove_file(kit->dev, &dev_input_attrs[i]);
+
+       for (i=0; i<kit->ifkit->sensors; i++)
+               device_remove_file(kit->dev, &dev_sensor_attrs[i]);
+
+       if (kit->ifkit->has_lcd) {
+               device_remove_file(kit->dev, &dev_attr_lcd);
+               remove_lcd_files(kit);
        }
-       if (kit->ifkit->has_lcd)
-               device_remove_file(&interface->dev, &dev_attr_lcd);
+
+       device_unregister(kit->dev);
 
        dev_info(&interface->dev, "USB PhidgetInterfaceKit %d/%d/%d detached\n",
                kit->ifkit->sensors, kit->ifkit->inputs, kit->ifkit->outputs);
 
-       usb_kill_urb(kit->irq);
-       usb_free_urb(kit->irq);
-       usb_buffer_free(kit->udev, 8, kit->data, kit->data_dma);
-
        usb_put_dev(kit->udev);
+       clear_bit(kit->dev_no, &device_no);
+
        kfree(kit);
 }