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Diffstat (limited to 'drivers/usb/misc/cy7c63.c')
-rw-r--r--drivers/usb/misc/cy7c63.c244
1 files changed, 0 insertions, 244 deletions
diff --git a/drivers/usb/misc/cy7c63.c b/drivers/usb/misc/cy7c63.c
deleted file mode 100644
index 8a1c10b89b76..000000000000
--- a/drivers/usb/misc/cy7c63.c
+++ /dev/null
@@ -1,244 +0,0 @@
1/*
2* cy7c63.c
3*
4* Copyright (c) 2006 Oliver Bock (bock@fh-wolfenbuettel.de)
5*
6* This driver is based on the Cypress Thermometer USB Driver by
7* Marcus Maul and the 2.0 version of Greg Kroah-Hartman's
8* USB Skeleton driver.
9*
10* Is is a generic driver for the Cypress CY7C63000 family.
11* For the time being it enables you to toggle the single I/O ports
12* of the device.
13*
14* Supported vendors: AK Modul-Bus Computer GmbH
15* Supported devices: CY7C63001A-PC (to be continued...)
16* Supported functions: Read/Write Ports (to be continued...)
17*
18* Chipsets families: CY7C63000, CY7C63001, CY7C63100, CY7C63101
19*
20*
21* This program is free software; you can redistribute it and/or
22* modify it under the terms of the GNU General Public License as
23* published by the Free Software Foundation, version 2.
24*/
25
26#include <linux/init.h>
27#include <linux/module.h>
28#include <linux/kernel.h>
29#include <linux/usb.h>
30
31#define DRIVER_AUTHOR "Oliver Bock (bock@fh-wolfenbuettel.de)"
32#define DRIVER_DESC "Cypress CY7C63xxx USB driver"
33
34#define CY7C63_VENDOR_ID 0xa2c
35#define CY7C63_PRODUCT_ID 0x8
36
37#define CY7C63_READ_PORT 0x4
38#define CY7C63_WRITE_PORT 0x5
39#define CY7C63_READ_RAM 0x2
40#define CY7C63_WRITE_RAM 0x3
41#define CY7C63_READ_ROM 0x1
42
43#define CY7C63_READ_PORT_ID0 0
44#define CY7C63_WRITE_PORT_ID0 0
45#define CY7C63_READ_PORT_ID1 0x2
46#define CY7C63_WRITE_PORT_ID1 1
47
48#define CY7C63_MAX_REQSIZE 8
49
50
51/* table of devices that work with this driver */
52static struct usb_device_id cy7c63_table [] = {
53 { USB_DEVICE(CY7C63_VENDOR_ID, CY7C63_PRODUCT_ID) },
54 { }
55};
56MODULE_DEVICE_TABLE(usb, cy7c63_table);
57
58/* structure to hold all of our device specific stuff */
59struct cy7c63 {
60 struct usb_device * udev;
61 char port0;
62 char port1;
63};
64
65/* used to send usb control messages to device */
66int vendor_command(struct cy7c63 *dev, unsigned char request,
67 unsigned char address, unsigned char data) {
68
69 int retval = 0;
70 unsigned int pipe;
71 unsigned char *iobuf;
72
73 /* allocate some memory for the i/o buffer*/
74 iobuf = kzalloc(CY7C63_MAX_REQSIZE, GFP_KERNEL);
75 if (!iobuf) {
76 dev_err(&dev->udev->dev, "Out of memory!\n");
77 retval = -ENOMEM;
78 goto error;
79 }
80
81 dev_dbg(&dev->udev->dev, "Sending usb_control_msg (data: %d)\n", data);
82
83 /* prepare usb control message and send it upstream */
84 pipe = usb_rcvctrlpipe(dev->udev, 0);
85 retval = usb_control_msg(dev->udev, pipe, request,
86 USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_OTHER,
87 address, data, iobuf, CY7C63_MAX_REQSIZE,
88 USB_CTRL_GET_TIMEOUT);
89
90 /* store returned data (more READs to be added!) */
91 switch (request) {
92 case CY7C63_READ_PORT:
93 if (address == CY7C63_READ_PORT_ID0) {
94 dev->port0 = iobuf[1];
95 dev_dbg(&dev->udev->dev,
96 "READ_PORT0 returned: %d\n",dev->port0);
97 }
98 else if (address == CY7C63_READ_PORT_ID1) {
99 dev->port1 = iobuf[1];
100 dev_dbg(&dev->udev->dev,
101 "READ_PORT1 returned: %d\n",dev->port1);
102 }
103 break;
104 }
105
106 kfree(iobuf);
107error:
108 return retval;
109}
110
111#define get_set_port(num,read_id,write_id) \
112static ssize_t set_port##num(struct device *dev, struct device_attribute *attr, \
113 const char *buf, size_t count) { \
114 \
115 int value; \
116 int result = 0; \
117 \
118 struct usb_interface *intf = to_usb_interface(dev); \
119 struct cy7c63 *cyp = usb_get_intfdata(intf); \
120 \
121 dev_dbg(&cyp->udev->dev, "WRITE_PORT%d called\n", num); \
122 \
123 /* validate input data */ \
124 if (sscanf(buf, "%d", &value) < 1) { \
125 result = -EINVAL; \
126 goto error; \
127 } \
128 if (value>255 || value<0) { \
129 result = -EINVAL; \
130 goto error; \
131 } \
132 \
133 result = vendor_command(cyp, CY7C63_WRITE_PORT, write_id, \
134 (unsigned char)value); \
135 \
136 dev_dbg(&cyp->udev->dev, "Result of vendor_command: %d\n\n",result); \
137error: \
138 return result < 0 ? result : count; \
139} \
140 \
141static ssize_t get_port##num(struct device *dev, \
142 struct device_attribute *attr, char *buf) { \
143 \
144 int result = 0; \
145 \
146 struct usb_interface *intf = to_usb_interface(dev); \
147 struct cy7c63 *cyp = usb_get_intfdata(intf); \
148 \
149 dev_dbg(&cyp->udev->dev, "READ_PORT%d called\n", num); \
150 \
151 result = vendor_command(cyp, CY7C63_READ_PORT, read_id, 0); \
152 \
153 dev_dbg(&cyp->udev->dev, "Result of vendor_command: %d\n\n", result); \
154 \
155 return sprintf(buf, "%d", cyp->port##num); \
156} \
157static DEVICE_ATTR(port##num, S_IWUGO | S_IRUGO, get_port##num, set_port##num);
158
159get_set_port(0, CY7C63_READ_PORT_ID0, CY7C63_WRITE_PORT_ID0);
160get_set_port(1, CY7C63_READ_PORT_ID1, CY7C63_WRITE_PORT_ID1);
161
162static int cy7c63_probe(struct usb_interface *interface,
163 const struct usb_device_id *id) {
164
165 struct cy7c63 *dev = NULL;
166 int retval = -ENOMEM;
167
168 /* allocate memory for our device state and initialize it */
169 dev = kzalloc(sizeof(*dev), GFP_KERNEL);
170 if (dev == NULL) {
171 dev_err(&dev->udev->dev, "Out of memory!\n");
172 goto error;
173 }
174
175 dev->udev = usb_get_dev(interface_to_usbdev(interface));
176
177 /* save our data pointer in this interface device */
178 usb_set_intfdata(interface, dev);
179
180 /* create device attribute files */
181 device_create_file(&interface->dev, &dev_attr_port0);
182 device_create_file(&interface->dev, &dev_attr_port1);
183
184 /* let the user know what node this device is now attached to */
185 dev_info(&interface->dev,
186 "Cypress CY7C63xxx device now attached\n");
187
188 retval = 0;
189error:
190 return retval;
191}
192
193static void cy7c63_disconnect(struct usb_interface *interface) {
194
195 struct cy7c63 *dev;
196
197 dev = usb_get_intfdata(interface);
198 usb_set_intfdata(interface, NULL);
199
200 /* remove device attribute files */
201 device_remove_file(&interface->dev, &dev_attr_port0);
202 device_remove_file(&interface->dev, &dev_attr_port1);
203
204 usb_put_dev(dev->udev);
205
206 dev_info(&interface->dev,
207 "Cypress CY7C63xxx device now disconnected\n");
208
209 kfree(dev);
210}
211
212static struct usb_driver cy7c63_driver = {
213 .name = "cy7c63",
214 .probe = cy7c63_probe,
215 .disconnect = cy7c63_disconnect,
216 .id_table = cy7c63_table,
217};
218
219static int __init cy7c63_init(void) {
220
221 int result;
222
223 /* register this driver with the USB subsystem */
224 result = usb_register(&cy7c63_driver);
225 if (result) {
226 err("Function usb_register failed! Error number: %d\n", result);
227 }
228
229 return result;
230}
231
232static void __exit cy7c63_exit(void) {
233
234 /* deregister this driver with the USB subsystem */
235 usb_deregister(&cy7c63_driver);
236}
237
238module_init(cy7c63_init);
239module_exit(cy7c63_exit);
240
241MODULE_AUTHOR(DRIVER_AUTHOR);
242MODULE_DESCRIPTION(DRIVER_DESC);
243
244MODULE_LICENSE("GPL");
generated by cgit v1.2.2 (git 2.25.0) at 2024-11-11 12:18:12 -0500