+++ /dev/null
-/*
- * 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");
projects / karo-tx-linux.git / commitdiff