Initial import

1 files changed, 273 insertions, 0 deletions

diff --git a/drivers/usb/misc/usbled.c b/drivers/usb/misc/usbled.c
new file mode 100644
index 000000000..bdef0d6eb
--- /dev/null
+++ b/drivers/usb/misc/usbled.c
@@ -0,0 +1,273 @@
+/*
+ * USB LED driver
+ *
+ * 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, version 2.
+ *
+ */
+
+#include <linux/kernel.h>
+#include <linux/errno.h>
+#include <linux/slab.h>
+#include <linux/module.h>
+#include <linux/usb.h>
+
+
+#define DRIVER_AUTHOR "Greg Kroah-Hartman, greg@kroah.com"
+#define DRIVER_DESC "USB LED Driver"
+
+enum led_type {
+	DELCOM_VISUAL_SIGNAL_INDICATOR,
+	DREAM_CHEEKY_WEBMAIL_NOTIFIER,
+	RISO_KAGAKU_LED
+};
+
+/* the Webmail LED made by RISO KAGAKU CORP. decodes a color index
+   internally, we want to keep the red+green+blue sysfs api, so we decode
+   from 1-bit RGB to the riso kagaku color index according to this table... */
+
+static unsigned const char riso_kagaku_tbl[] = {
+/* R+2G+4B -> riso kagaku color index */
+	[0] = 0, /* black   */
+	[1] = 2, /* red     */
+	[2] = 1, /* green   */
+	[3] = 5, /* yellow  */
+	[4] = 3, /* blue    */
+	[5] = 6, /* magenta */
+	[6] = 4, /* cyan    */
+	[7] = 7  /* white   */
+};
+
+#define RISO_KAGAKU_IX(r,g,b) riso_kagaku_tbl[((r)?1:0)+((g)?2:0)+((b)?4:0)]
+
+/* table of devices that work with this driver */
+static const struct usb_device_id id_table[] = {
+	{ USB_DEVICE(0x0fc5, 0x1223),
+			.driver_info = DELCOM_VISUAL_SIGNAL_INDICATOR },
+	{ USB_DEVICE(0x1d34, 0x0004),
+			.driver_info = DREAM_CHEEKY_WEBMAIL_NOTIFIER },
+	{ USB_DEVICE(0x1d34, 0x000a),
+			.driver_info = DREAM_CHEEKY_WEBMAIL_NOTIFIER },
+	{ USB_DEVICE(0x1294, 0x1320),
+			.driver_info = RISO_KAGAKU_LED },
+	{ },
+};
+MODULE_DEVICE_TABLE(usb, id_table);
+
+struct usb_led {
+	struct usb_device	*udev;
+	unsigned char		blue;
+	unsigned char		red;
+	unsigned char		green;
+	enum led_type		type;
+};
+
+static void change_color(struct usb_led *led)
+{
+	int retval = 0;
+	unsigned char *buffer;
+	int actlength;
+
+	buffer = kmalloc(8, GFP_KERNEL);
+	if (!buffer) {
+		dev_err(&led->udev->dev, "out of memory\n");
+		return;
+	}
+
+	switch (led->type) {
+	case DELCOM_VISUAL_SIGNAL_INDICATOR: {
+		unsigned char color = 0x07;
+
+		if (led->blue)
+			color &= ~0x04;
+		if (led->red)
+			color &= ~0x02;
+		if (led->green)
+			color &= ~0x01;
+		dev_dbg(&led->udev->dev,
+			"blue = %d, red = %d, green = %d, color = %.2x\n",
+			led->blue, led->red, led->green, color);
+
+		retval = usb_control_msg(led->udev,
+					usb_sndctrlpipe(led->udev, 0),
+					0x12,
+					0xc8,
+					(0x02 * 0x100) + 0x0a,
+					(0x00 * 0x100) + color,
+					buffer,
+					8,
+					2000);
+		break;
+	}
+
+	case DREAM_CHEEKY_WEBMAIL_NOTIFIER:
+		dev_dbg(&led->udev->dev,
+			"red = %d, green = %d, blue = %d\n",
+			led->red, led->green, led->blue);
+
+		buffer[0] = led->red;
+		buffer[1] = led->green;
+		buffer[2] = led->blue;
+		buffer[3] = buffer[4] = buffer[5] = 0;
+		buffer[6] = 0x1a;
+		buffer[7] = 0x05;
+
+		retval = usb_control_msg(led->udev,
+					usb_sndctrlpipe(led->udev, 0),
+					0x09,
+					0x21,
+					0x200,
+					0,
+					buffer,
+					8,
+					2000);
+		break;
+
+	case RISO_KAGAKU_LED:
+		buffer[0] = RISO_KAGAKU_IX(led->red, led->green, led->blue);
+		buffer[1] = 0;
+		buffer[2] = 0;
+		buffer[3] = 0;
+		buffer[4] = 0;
+
+		retval = usb_interrupt_msg(led->udev,
+			usb_sndctrlpipe(led->udev, 2),
+			buffer, 5, &actlength, 1000 /*ms timeout*/);
+		break;
+
+	default:
+		dev_err(&led->udev->dev, "unknown device type %d\n", led->type);
+	}
+
+	if (retval)
+		dev_dbg(&led->udev->dev, "retval = %d\n", retval);
+	kfree(buffer);
+}
+
+#define show_set(value)	\
+static ssize_t show_##value(struct device *dev, struct device_attribute *attr,\
+			    char *buf)					\
+{									\
+	struct usb_interface *intf = to_usb_interface(dev);		\
+	struct usb_led *led = usb_get_intfdata(intf);			\
+									\
+	return sprintf(buf, "%d\n", led->value);			\
+}									\
+static ssize_t set_##value(struct device *dev, struct device_attribute *attr,\
+			   const char *buf, size_t count)		\
+{									\
+	struct usb_interface *intf = to_usb_interface(dev);		\
+	struct usb_led *led = usb_get_intfdata(intf);			\
+	int temp = simple_strtoul(buf, NULL, 10);			\
+									\
+	led->value = temp;						\
+	change_color(led);						\
+	return count;							\
+}									\
+static DEVICE_ATTR(value, S_IRUGO | S_IWUSR, show_##value, set_##value);
+show_set(blue);
+show_set(red);
+show_set(green);
+
+static int led_probe(struct usb_interface *interface,
+		     const struct usb_device_id *id)
+{
+	struct usb_device *udev = interface_to_usbdev(interface);
+	struct usb_led *dev = NULL;
+	int retval = -ENOMEM;
+
+	dev = kzalloc(sizeof(struct usb_led), GFP_KERNEL);
+	if (dev == NULL) {
+		dev_err(&interface->dev, "out of memory\n");
+		goto error_mem;
+	}
+
+	dev->udev = usb_get_dev(udev);
+	dev->type = id->driver_info;
+
+	usb_set_intfdata(interface, dev);
+
+	retval = device_create_file(&interface->dev, &dev_attr_blue);
+	if (retval)
+		goto error;
+	retval = device_create_file(&interface->dev, &dev_attr_red);
+	if (retval)
+		goto error;
+	retval = device_create_file(&interface->dev, &dev_attr_green);
+	if (retval)
+		goto error;
+
+	if (dev->type == DREAM_CHEEKY_WEBMAIL_NOTIFIER) {
+		unsigned char *enable;
+
+		enable = kmemdup("\x1f\x02\0\x5f\0\0\x1a\x03", 8, GFP_KERNEL);
+		if (!enable) {
+			dev_err(&interface->dev, "out of memory\n");
+			retval = -ENOMEM;
+			goto error;
+		}
+
+		retval = usb_control_msg(udev,
+					usb_sndctrlpipe(udev, 0),
+					0x09,
+					0x21,
+					0x200,
+					0,
+					enable,
+					8,
+					2000);
+
+		kfree(enable);
+		if (retval != 8)
+			goto error;
+	}
+
+	dev_info(&interface->dev, "USB LED device now attached\n");
+	return 0;
+
+error:
+	device_remove_file(&interface->dev, &dev_attr_blue);
+	device_remove_file(&interface->dev, &dev_attr_red);
+	device_remove_file(&interface->dev, &dev_attr_green);
+	usb_set_intfdata(interface, NULL);
+	usb_put_dev(dev->udev);
+	kfree(dev);
+error_mem:
+	return retval;
+}
+
+static void led_disconnect(struct usb_interface *interface)
+{
+	struct usb_led *dev;
+
+	dev = usb_get_intfdata(interface);
+
+	device_remove_file(&interface->dev, &dev_attr_blue);
+	device_remove_file(&interface->dev, &dev_attr_red);
+	device_remove_file(&interface->dev, &dev_attr_green);
+
+	/* first remove the files, then set the pointer to NULL */
+	usb_set_intfdata(interface, NULL);
+
+	usb_put_dev(dev->udev);
+
+	kfree(dev);
+
+	dev_info(&interface->dev, "USB LED now disconnected\n");
+}
+
+static struct usb_driver led_driver = {
+	.name =		"usbled",
+	.probe =	led_probe,
+	.disconnect =	led_disconnect,
+	.id_table =	id_table,
+};
+
+module_usb_driver(led_driver);
+
+MODULE_AUTHOR(DRIVER_AUTHOR);
+MODULE_DESCRIPTION(DRIVER_DESC);
+MODULE_LICENSE("GPL");