4 * Copyright (C) 2004 Greg Kroah-Hartman (greg@kroah.com)
6 * This program is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU General Public License as
8 * published by the Free Software Foundation, version 2.
12 #include <linux/kernel.h>
13 #include <linux/errno.h>
14 #include <linux/init.h>
15 #include <linux/slab.h>
16 #include <linux/module.h>
17 #include <linux/usb.h>
20 #define DRIVER_AUTHOR "Greg Kroah-Hartman, greg@kroah.com"
21 #define DRIVER_DESC "USB LED Driver"
24 DELCOM_VISUAL_SIGNAL_INDICATOR
,
25 DREAM_CHEEKY_WEBMAIL_NOTIFIER
,
28 /* table of devices that work with this driver */
29 static const struct usb_device_id id_table
[] = {
30 { USB_DEVICE(0x0fc5, 0x1223),
31 .driver_info
= DELCOM_VISUAL_SIGNAL_INDICATOR
},
32 { USB_DEVICE(0x1d34, 0x0004),
33 .driver_info
= DREAM_CHEEKY_WEBMAIL_NOTIFIER
},
34 { USB_DEVICE(0x1d34, 0x000a),
35 .driver_info
= DREAM_CHEEKY_WEBMAIL_NOTIFIER
},
38 MODULE_DEVICE_TABLE(usb
, id_table
);
41 struct usb_device
*udev
;
48 static void change_color(struct usb_led
*led
)
51 unsigned char *buffer
;
53 buffer
= kmalloc(8, GFP_KERNEL
);
55 dev_err(&led
->udev
->dev
, "out of memory\n");
60 case DELCOM_VISUAL_SIGNAL_INDICATOR
: {
61 unsigned char color
= 0x07;
69 dev_dbg(&led
->udev
->dev
,
70 "blue = %d, red = %d, green = %d, color = %.2x\n",
71 led
->blue
, led
->red
, led
->green
, color
);
73 retval
= usb_control_msg(led
->udev
,
74 usb_sndctrlpipe(led
->udev
, 0),
77 (0x02 * 0x100) + 0x0a,
78 (0x00 * 0x100) + color
,
85 case DREAM_CHEEKY_WEBMAIL_NOTIFIER
:
86 dev_dbg(&led
->udev
->dev
,
87 "red = %d, green = %d, blue = %d\n",
88 led
->red
, led
->green
, led
->blue
);
91 buffer
[1] = led
->green
;
92 buffer
[2] = led
->blue
;
93 buffer
[3] = buffer
[4] = buffer
[5] = 0;
97 retval
= usb_control_msg(led
->udev
,
98 usb_sndctrlpipe(led
->udev
, 0),
109 dev_err(&led
->udev
->dev
, "unknown device type %d\n", led
->type
);
113 dev_dbg(&led
->udev
->dev
, "retval = %d\n", retval
);
117 #define show_set(value) \
118 static ssize_t show_##value(struct device *dev, struct device_attribute *attr,\
121 struct usb_interface *intf = to_usb_interface(dev); \
122 struct usb_led *led = usb_get_intfdata(intf); \
124 return sprintf(buf, "%d\n", led->value); \
126 static ssize_t set_##value(struct device *dev, struct device_attribute *attr,\
127 const char *buf, size_t count) \
129 struct usb_interface *intf = to_usb_interface(dev); \
130 struct usb_led *led = usb_get_intfdata(intf); \
131 int temp = simple_strtoul(buf, NULL, 10); \
137 static DEVICE_ATTR(value, S_IRUGO | S_IWUSR, show_##value, set_##value);
142 static int led_probe(struct usb_interface
*interface
,
143 const struct usb_device_id
*id
)
145 struct usb_device
*udev
= interface_to_usbdev(interface
);
146 struct usb_led
*dev
= NULL
;
147 int retval
= -ENOMEM
;
149 dev
= kzalloc(sizeof(struct usb_led
), GFP_KERNEL
);
151 dev_err(&interface
->dev
, "out of memory\n");
155 dev
->udev
= usb_get_dev(udev
);
156 dev
->type
= id
->driver_info
;
158 usb_set_intfdata(interface
, dev
);
160 retval
= device_create_file(&interface
->dev
, &dev_attr_blue
);
163 retval
= device_create_file(&interface
->dev
, &dev_attr_red
);
166 retval
= device_create_file(&interface
->dev
, &dev_attr_green
);
170 if (dev
->type
== DREAM_CHEEKY_WEBMAIL_NOTIFIER
) {
171 unsigned char *enable
;
173 enable
= kmemdup("\x1f\x02\0\x5f\0\0\x1a\x03", 8, GFP_KERNEL
);
175 dev_err(&interface
->dev
, "out of memory\n");
180 retval
= usb_control_msg(udev
,
181 usb_sndctrlpipe(udev
, 0),
195 dev_info(&interface
->dev
, "USB LED device now attached\n");
199 device_remove_file(&interface
->dev
, &dev_attr_blue
);
200 device_remove_file(&interface
->dev
, &dev_attr_red
);
201 device_remove_file(&interface
->dev
, &dev_attr_green
);
202 usb_set_intfdata(interface
, NULL
);
203 usb_put_dev(dev
->udev
);
209 static void led_disconnect(struct usb_interface
*interface
)
213 dev
= usb_get_intfdata(interface
);
215 device_remove_file(&interface
->dev
, &dev_attr_blue
);
216 device_remove_file(&interface
->dev
, &dev_attr_red
);
217 device_remove_file(&interface
->dev
, &dev_attr_green
);
219 /* first remove the files, then set the pointer to NULL */
220 usb_set_intfdata(interface
, NULL
);
222 usb_put_dev(dev
->udev
);
226 dev_info(&interface
->dev
, "USB LED now disconnected\n");
229 static struct usb_driver led_driver
= {
232 .disconnect
= led_disconnect
,
233 .id_table
= id_table
,
236 module_usb_driver(led_driver
);
238 MODULE_AUTHOR(DRIVER_AUTHOR
);
239 MODULE_DESCRIPTION(DRIVER_DESC
);
240 MODULE_LICENSE("GPL");