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22#include <linux/module.h>
23#include <linux/slab.h>
24#include <linux/videodev2.h>
25#include <media/v4l2-common.h>
26#include <linux/mutex.h>
27
28#include "au0828.h"
29
30
31
32
33
34
35
36int au0828_debug;
37module_param_named(debug, au0828_debug, int, 0644);
38MODULE_PARM_DESC(debug, "enable debug messages");
39
40static unsigned int disable_usb_speed_check;
41module_param(disable_usb_speed_check, int, 0444);
42MODULE_PARM_DESC(disable_usb_speed_check,
43 "override min bandwidth requirement of 480M bps");
44
45#define _AU0828_BULKPIPE 0x03
46#define _BULKPIPESIZE 0xffff
47
48static int send_control_msg(struct au0828_dev *dev, u16 request, u32 value,
49 u16 index, unsigned char *cp, u16 size);
50static int recv_control_msg(struct au0828_dev *dev, u16 request, u32 value,
51 u16 index, unsigned char *cp, u16 size);
52
53
54#define CMD_REQUEST_IN 0x00
55#define CMD_REQUEST_OUT 0x01
56
57u32 au0828_readreg(struct au0828_dev *dev, u16 reg)
58{
59 recv_control_msg(dev, CMD_REQUEST_IN, 0, reg, dev->ctrlmsg, 1);
60 dprintk(8, "%s(0x%04x) = 0x%02x\n", __func__, reg, dev->ctrlmsg[0]);
61 return dev->ctrlmsg[0];
62}
63
64u32 au0828_writereg(struct au0828_dev *dev, u16 reg, u32 val)
65{
66 dprintk(8, "%s(0x%04x, 0x%02x)\n", __func__, reg, val);
67 return send_control_msg(dev, CMD_REQUEST_OUT, val, reg,
68 dev->ctrlmsg, 0);
69}
70
71static void cmd_msg_dump(struct au0828_dev *dev)
72{
73 int i;
74
75 for (i = 0; i < sizeof(dev->ctrlmsg); i += 16)
76 dprintk(2, "%s() %02x %02x %02x %02x %02x %02x %02x %02x "
77 "%02x %02x %02x %02x %02x %02x %02x %02x\n",
78 __func__,
79 dev->ctrlmsg[i+0], dev->ctrlmsg[i+1],
80 dev->ctrlmsg[i+2], dev->ctrlmsg[i+3],
81 dev->ctrlmsg[i+4], dev->ctrlmsg[i+5],
82 dev->ctrlmsg[i+6], dev->ctrlmsg[i+7],
83 dev->ctrlmsg[i+8], dev->ctrlmsg[i+9],
84 dev->ctrlmsg[i+10], dev->ctrlmsg[i+11],
85 dev->ctrlmsg[i+12], dev->ctrlmsg[i+13],
86 dev->ctrlmsg[i+14], dev->ctrlmsg[i+15]);
87}
88
89static int send_control_msg(struct au0828_dev *dev, u16 request, u32 value,
90 u16 index, unsigned char *cp, u16 size)
91{
92 int status = -ENODEV;
93 mutex_lock(&dev->mutex);
94 if (dev->usbdev) {
95
96
97 status = usb_control_msg(dev->usbdev,
98 usb_sndctrlpipe(dev->usbdev, 0),
99 request,
100 USB_DIR_OUT | USB_TYPE_VENDOR |
101 USB_RECIP_DEVICE,
102 value, index,
103 cp, size, 1000);
104
105 status = min(status, 0);
106
107 if (status < 0) {
108 printk(KERN_ERR "%s() Failed sending control message, error %d.\n",
109 __func__, status);
110 }
111
112 }
113 mutex_unlock(&dev->mutex);
114 return status;
115}
116
117static int recv_control_msg(struct au0828_dev *dev, u16 request, u32 value,
118 u16 index, unsigned char *cp, u16 size)
119{
120 int status = -ENODEV;
121 mutex_lock(&dev->mutex);
122 if (dev->usbdev) {
123
124 memset(dev->ctrlmsg, 0, sizeof(dev->ctrlmsg));
125
126
127 status = usb_control_msg(dev->usbdev,
128 usb_rcvctrlpipe(dev->usbdev, 0),
129 request,
130 USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
131 value, index,
132 cp, size, 1000);
133
134 status = min(status, 0);
135
136 if (status < 0) {
137 printk(KERN_ERR "%s() Failed receiving control message, error %d.\n",
138 __func__, status);
139 } else
140 cmd_msg_dump(dev);
141 }
142 mutex_unlock(&dev->mutex);
143 return status;
144}
145
146static void au0828_usb_disconnect(struct usb_interface *interface)
147{
148 struct au0828_dev *dev = usb_get_intfdata(interface);
149
150 dprintk(1, "%s()\n", __func__);
151
152
153 au0828_dvb_unregister(dev);
154
155 if (AUVI_INPUT(0).type != AU0828_VMUX_UNDEFINED)
156 au0828_analog_unregister(dev);
157
158
159 au0828_i2c_unregister(dev);
160
161 v4l2_device_unregister(&dev->v4l2_dev);
162
163 usb_set_intfdata(interface, NULL);
164
165 mutex_lock(&dev->mutex);
166 dev->usbdev = NULL;
167 mutex_unlock(&dev->mutex);
168
169 kfree(dev);
170
171}
172
173static int au0828_usb_probe(struct usb_interface *interface,
174 const struct usb_device_id *id)
175{
176 int ifnum, retval;
177 struct au0828_dev *dev;
178 struct usb_device *usbdev = interface_to_usbdev(interface);
179
180 ifnum = interface->altsetting->desc.bInterfaceNumber;
181
182 if (ifnum != 0)
183 return -ENODEV;
184
185 dprintk(1, "%s() vendor id 0x%x device id 0x%x ifnum:%d\n", __func__,
186 le16_to_cpu(usbdev->descriptor.idVendor),
187 le16_to_cpu(usbdev->descriptor.idProduct),
188 ifnum);
189
190
191
192
193
194
195 if (usbdev->speed != USB_SPEED_HIGH && disable_usb_speed_check == 0) {
196 printk(KERN_ERR "au0828: Device initialization failed.\n");
197 printk(KERN_ERR "au0828: Device must be connected to a "
198 "high-speed USB 2.0 port.\n");
199 return -ENODEV;
200 }
201
202 dev = kzalloc(sizeof(*dev), GFP_KERNEL);
203 if (dev == NULL) {
204 printk(KERN_ERR "%s() Unable to allocate memory\n", __func__);
205 return -ENOMEM;
206 }
207
208 mutex_init(&dev->mutex);
209 mutex_init(&dev->dvb.lock);
210 dev->usbdev = usbdev;
211 dev->boardnr = id->driver_info;
212
213
214 retval = v4l2_device_register(&interface->dev, &dev->v4l2_dev);
215 if (retval) {
216 printk(KERN_ERR "%s() v4l2_device_register failed\n",
217 __func__);
218 kfree(dev);
219 return -EIO;
220 }
221
222
223 au0828_write(dev, REG_600, 1 << 4);
224
225
226 au0828_gpio_setup(dev);
227
228
229 au0828_i2c_register(dev);
230
231
232 au0828_card_setup(dev);
233
234
235 if (AUVI_INPUT(0).type != AU0828_VMUX_UNDEFINED)
236 au0828_analog_register(dev, interface);
237
238
239 au0828_dvb_register(dev);
240
241
242
243 usb_set_intfdata(interface, dev);
244
245 printk(KERN_INFO "Registered device AU0828 [%s]\n",
246 dev->board.name == NULL ? "Unset" : dev->board.name);
247
248 return 0;
249}
250
251static struct usb_driver au0828_usb_driver = {
252 .name = DRIVER_NAME,
253 .probe = au0828_usb_probe,
254 .disconnect = au0828_usb_disconnect,
255 .id_table = au0828_usb_id_table,
256};
257
258static int __init au0828_init(void)
259{
260 int ret;
261
262 if (au0828_debug & 1)
263 printk(KERN_INFO "%s() Debugging is enabled\n", __func__);
264
265 if (au0828_debug & 2)
266 printk(KERN_INFO "%s() USB Debugging is enabled\n", __func__);
267
268 if (au0828_debug & 4)
269 printk(KERN_INFO "%s() I2C Debugging is enabled\n", __func__);
270
271 if (au0828_debug & 8)
272 printk(KERN_INFO "%s() Bridge Debugging is enabled\n",
273 __func__);
274
275 printk(KERN_INFO "au0828 driver loaded\n");
276
277 ret = usb_register(&au0828_usb_driver);
278 if (ret)
279 printk(KERN_ERR "usb_register failed, error = %d\n", ret);
280
281 return ret;
282}
283
284static void __exit au0828_exit(void)
285{
286 usb_deregister(&au0828_usb_driver);
287}
288
289module_init(au0828_init);
290module_exit(au0828_exit);
291
292MODULE_DESCRIPTION("Driver for Auvitek AU0828 based products");
293MODULE_AUTHOR("Steven Toth <stoth@linuxtv.org>");
294MODULE_LICENSE("GPL");
295MODULE_VERSION("0.0.2");
296
