1 files changed, 586 insertions, 0 deletions

diff --git a/drivers/usb/misc/phidgetkit.c b/drivers/usb/misc/phidgetkit.c
new file mode 100644
index 0000000..ddbf8e9
--- /dev/null
+++ b/drivers/usb/misc/phidgetkit.c
@@ -0,0 +1,586 @@
+/*
+ * USB PhidgetInterfaceKit driver 1.0
+ *
+ * Copyright (C) 2004 Sean Young <sean@mess.org>
+ * Copyright (C) 2004 Greg Kroah-Hartman <greg@kroah.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 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/slab.h>
+#include <linux/module.h>
+#include <linux/usb.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_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
+
+struct driver_interfacekit {
+	int sensors;
+	int inputs;
+	int outputs;
+	int has_lcd;
+};
+#define ifkit(_sensors, _inputs, _outputs, _lcd)			\
+static struct driver_interfacekit ph_##_sensors##_inputs##_outputs = {	\
+	.sensors	= _sensors,					\
+	.inputs		= _inputs,					\
+	.outputs	= _outputs,					\
+	.has_lcd	= _lcd,						\
+};
+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 {
+	struct usb_device *udev;
+	struct usb_interface *intf;
+	struct driver_interfacekit *ifkit;
+	int outputs[MAX_INTERFACES];
+	int inputs[MAX_INTERFACES];
+	int sensors[MAX_INTERFACES];
+	u8 lcd_files_on;
+
+	struct urb *irq;
+	unsigned char *data;
+	dma_addr_t data_dma;
+};
+
+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(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_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)
+{
+	unsigned char *buffer;
+	int retval;
+	int n;
+
+	buffer = kmalloc(4, GFP_KERNEL);
+	if (!buffer) {
+		dev_err(&kit->udev->dev, "%s - out of memory\n",
+			__FUNCTION__);
+		return -ENOMEM;
+	}
+
+	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]);
+
+	retval = usb_control_msg(kit->udev,
+			 usb_sndctrlpipe(kit->udev, 0),
+			 0x09, 0x21, 0x0200, 0x0000, buffer, 4, 2000);
+
+	if (retval != 4)
+		dev_err(&kit->udev->dev, "usb_control_msg returned %d\n", 
+				retval);
+	kfree(buffer);
+
+	return retval < 0 ? retval : 0;
+}
+
+static int change_string(struct phidget_interfacekit *kit, const char *display, unsigned char row)
+{
+	unsigned char *buffer;
+        unsigned char *form_buffer;
+	int retval = -ENOMEM;
+	int i,j, len, buf_ptr;
+	
+	buffer = kmalloc(8, GFP_KERNEL);
+	form_buffer = kmalloc(30, GFP_KERNEL);
+	if ((!buffer) || (!form_buffer)) {
+		dev_err(&kit->udev->dev, "%s - out of memory\n", __FUNCTION__);
+		goto exit;
+	}
+
+	len = strlen(display);
+	if (len > 20)
+		len = 20;
+
+	dev_dbg(&kit->udev->dev, "Setting LCD line %d to %s\n", row, display);
+
+	form_buffer[0] = row * 0x40 + 0x80;
+	form_buffer[1] = 0x02;
+	buf_ptr = 2;
+	for (i = 0; i<len; i++)
+		form_buffer[buf_ptr++] = display[i];
+
+	for (i = 0; i < (20 - len); i++)
+		form_buffer[buf_ptr++] = 0x20;
+	form_buffer[buf_ptr++] = 0x01;
+	form_buffer[buf_ptr++] = row * 0x40 + 0x80 + strlen(display);
+
+	for (i = 0; i < buf_ptr; i += 7) {
+		if ((buf_ptr - i) > 7)
+			len = 7;
+		else
+			len = (buf_ptr - i);
+		for (j = 0; j < len; j++)
+			buffer[j] = form_buffer[i + j];
+		buffer[7] = len;
+
+		retval = usb_control_msg(kit->udev,
+				 usb_sndctrlpipe(kit->udev, 0),
+				 0x09, 0x21, 0x0200, 0x0000, buffer, 8, 2000);
+		if (retval < 0)
+			goto exit;
+	}
+
+	retval = 0;
+exit:
+	kfree(buffer);
+	kfree(form_buffer);
+
+	return retval;
+}
+
+#define set_lcd_line(number)	\
+static ssize_t lcd_line_##number(struct device *dev, 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);
+set_lcd_line(1);
+set_lcd_line(2);
+
+static ssize_t set_backlight(struct device *dev, const char *buf, size_t count)
+{
+	struct usb_interface *intf = to_usb_interface(dev);
+	struct phidget_interfacekit *kit = usb_get_intfdata(intf);
+	int enabled;
+	unsigned char *buffer;
+	int retval = -ENOMEM;
+	
+	buffer = kmalloc(8, GFP_KERNEL);
+	if (!buffer) {
+		dev_err(&kit->udev->dev, "%s - out of memory\n", __FUNCTION__);
+		goto exit;
+	}
+
+	if (sscanf(buf, "%d", &enabled) < 1) {
+		retval = -EINVAL;
+		goto exit;
+	}
+	memset(buffer, 0x00, 8);
+	if (enabled)
+		buffer[0] = 0x01;
+	buffer[7] = 0x11;
+
+	dev_dbg(&kit->udev->dev, "Setting backlight to %s\n", enabled ? "on" : "off");
+	
+	retval = usb_control_msg(kit->udev,
+			 usb_sndctrlpipe(kit->udev, 0),
+			 0x09, 0x21, 0x0200, 0x0000, buffer, 8, 2000);
+	if (retval < 0)
+		goto exit;
+
+	retval = count;
+exit:
+	kfree(buffer);
+	return retval;
+}
+static DEVICE_ATTR(backlight, S_IWUGO, NULL, set_backlight);
+
+static void remove_lcd_files(struct phidget_interfacekit *kit)
+{
+	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);
+	}
+}
+
+static ssize_t enable_lcd_files(struct device *dev, const char *buf, size_t count)
+{
+	struct usb_interface *intf = to_usb_interface(dev);
+	struct phidget_interfacekit *kit = usb_get_intfdata(intf);
+	int enable;
+	
+	if (kit->ifkit->has_lcd == 0)
+		return -ENODEV;
+
+	if (sscanf(buf, "%d", &enable) < 1)
+		return -EINVAL;
+
+	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);
+			kit->lcd_files_on = 1;
+		}
+	} else {
+		if (kit->lcd_files_on) {
+			remove_lcd_files(kit);
+			kit->lcd_files_on = 0;
+		}
+	}
+	
+	return count;
+}
+static DEVICE_ATTR(lcd, S_IWUGO, NULL, enable_lcd_files);
+
+static void interfacekit_irq(struct urb *urb, struct pt_regs *regs)
+{
+	struct phidget_interfacekit *kit = urb->context;
+	unsigned char *buffer = kit->data;
+	int status;
+	int n;
+
+	switch (urb->status) {
+	case 0:			/* success */
+		break;
+	case -ECONNRESET:	/* unlink */
+	case -ENOENT:
+	case -ESHUTDOWN:
+		return;
+	/* -EPIPE:  should clear the halt */
+	default:		/* error */
+		goto resubmit;
+	}
+
+	for (n=0; n<8; n++) {
+		kit->inputs[n] = buffer[1] & (1 << n) ? 1 : 0;
+	}
+
+	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;
+	}
+
+resubmit:
+	status = usb_submit_urb(urb, SLAB_ATOMIC);
+	if (status)
+		err("can't resubmit intr, %s-%s/interfacekit0, status %d",
+			kit->udev->bus->bus_name,
+			kit->udev->devpath, status);
+}
+
+#define show_set_output(value)		\
+static ssize_t set_output##value(struct device *dev, const char *buf, 	\
+							size_t count)	\
+{									\
+	struct usb_interface *intf = to_usb_interface(dev);		\
+	struct phidget_interfacekit *kit = usb_get_intfdata(intf);	\
+	int enabled;							\
+	int retval;							\
+									\
+	if (sscanf(buf, "%d", &enabled) < 1) {				\
+		return -EINVAL;						\
+	}								\
+									\
+	retval = change_outputs(kit, value - 1, enabled ? 1 : 0);	\
+									\
+	return retval ? retval : count;					\
+}									\
+									\
+static ssize_t show_output##value(struct device *dev, char *buf)	\
+{									\
+	struct usb_interface *intf = to_usb_interface(dev);		\
+	struct phidget_interfacekit *kit = usb_get_intfdata(intf);	\
+									\
+	return sprintf(buf, "%d\n", kit->outputs[value - 1]);		\
+}									\
+static DEVICE_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);
+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 */
+
+#define show_input(value)	\
+static ssize_t show_input##value(struct device *dev, char *buf)	\
+{									\
+	struct usb_interface *intf = to_usb_interface(dev);		\
+	struct phidget_interfacekit *kit = usb_get_intfdata(intf);	\
+									\
+	return sprintf(buf, "%d\n", kit->inputs[value - 1]);		\
+}									\
+static DEVICE_ATTR(input##value, S_IRUGO, show_input##value, NULL);
+
+show_input(1);
+show_input(2);
+show_input(3);
+show_input(4);
+show_input(5);
+show_input(6);
+show_input(7);
+show_input(8);		/* should be MAX_INTERFACES - 1 */
+
+#define show_sensor(value)	\
+static ssize_t show_sensor##value(struct device *dev, char *buf)	\
+{									\
+	struct usb_interface *intf = to_usb_interface(dev);		\
+	struct phidget_interfacekit *kit = usb_get_intfdata(intf);	\
+									\
+	return sprintf(buf, "%d\n", kit->sensors[value - 1]);		\
+}									\
+static DEVICE_ATTR(sensor##value, S_IRUGO, show_sensor##value, NULL);
+
+show_sensor(1);
+show_sensor(2);
+show_sensor(3);
+show_sensor(4);
+show_sensor(5);
+show_sensor(6);
+show_sensor(7);
+show_sensor(8);		/* should be MAX_INTERFACES - 1 */
+
+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 driver_interfacekit *ifkit;
+	int pipe, maxp;
+
+	ifkit = (struct driver_interfacekit *)id->driver_info;
+	if (!ifkit)
+		return -ENODEV;
+
+	interface = intf->cur_altsetting;
+	if (interface->desc.bNumEndpoints != 1)
+		return -ENODEV;
+
+	endpoint = &interface->endpoint[0].desc;
+	if (!(endpoint->bEndpointAddress & 0x80)) 
+		return -ENODEV;
+	/*
+	 * bmAttributes
+	 */
+	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->data = usb_buffer_alloc(dev, 8, SLAB_ATOMIC, &kit->data_dma);
+	if (!kit->data) {
+		kfree(kit);
+		return -ENOMEM;
+	}
+
+	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;
+	}
+
+	kit->udev = usb_get_dev(dev);
+	kit->intf = intf;
+	usb_fill_int_urb(kit->irq, kit->udev, pipe, kit->data,
+			(maxp > 8 ? 8 : 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);
+
+	if (usb_submit_urb(kit->irq, GFP_KERNEL)) {
+		return -EIO;
+	}
+
+	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);
+	}
+
+	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);
+	}
+	if (ifkit->sensors == 8) {
+		device_create_file(&intf->dev, &dev_attr_sensor8);
+	}
+
+	if (ifkit->has_lcd)
+		device_create_file(&intf->dev, &dev_attr_lcd);
+
+	dev_info(&intf->dev, "USB PhidgetInterfaceKit %d/%d/%d attached\n",
+			ifkit->sensors, ifkit->inputs, ifkit->outputs);
+
+	return 0;
+}
+
+static void interfacekit_disconnect(struct usb_interface *interface)
+{
+	struct phidget_interfacekit *kit;
+
+	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);
+	}
+
+	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);
+	}
+
+	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);
+	}
+	if (kit->ifkit->has_lcd)
+		device_remove_file(&interface->dev, &dev_attr_lcd);
+
+	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);
+	kfree(kit);
+}
+
+static struct usb_driver interfacekit_driver = {
+	.owner = THIS_MODULE,
+	.name = "phidgetkit",
+	.probe = interfacekit_probe,
+	.disconnect = interfacekit_disconnect,
+	.id_table = id_table
+};
+
+static int __init interfacekit_init(void)
+{
+	int retval = 0;
+
+	retval = usb_register(&interfacekit_driver);
+	if (retval)
+		err("usb_register failed. Error number %d", retval);
+
+	return retval;
+}
+
+static void __exit interfacekit_exit(void)
+{
+	usb_deregister(&interfacekit_driver);
+}
+
+module_init(interfacekit_init);
+module_exit(interfacekit_exit);
+
+MODULE_AUTHOR(DRIVER_AUTHOR);
+MODULE_DESCRIPTION(DRIVER_DESC);
+MODULE_LICENSE("GPL");