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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);
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 u8 result = 0;
60
61 recv_control_msg(dev, CMD_REQUEST_IN, 0, reg, &result, 1);
62 dprintk(8, "%s(0x%04x) = 0x%02x\n", __func__, reg, result);
63
64 return result;
65}
66
67u32 au0828_writereg(struct au0828_dev *dev, u16 reg, u32 val)
68{
69 dprintk(8, "%s(0x%04x, 0x%02x)\n", __func__, reg, val);
70 return send_control_msg(dev, CMD_REQUEST_OUT, val, reg);
71}
72
73static int send_control_msg(struct au0828_dev *dev, u16 request, u32 value,
74 u16 index)
75{
76 int status = -ENODEV;
77
78 if (dev->usbdev) {
79
80
81 status = usb_control_msg(dev->usbdev,
82 usb_sndctrlpipe(dev->usbdev, 0),
83 request,
84 USB_DIR_OUT | USB_TYPE_VENDOR |
85 USB_RECIP_DEVICE,
86 value, index, NULL, 0, 1000);
87
88 status = min(status, 0);
89
90 if (status < 0) {
91 printk(KERN_ERR "%s() Failed sending control message, error %d.\n",
92 __func__, status);
93 }
94
95 }
96
97 return status;
98}
99
100static int recv_control_msg(struct au0828_dev *dev, u16 request, u32 value,
101 u16 index, unsigned char *cp, u16 size)
102{
103 int status = -ENODEV;
104 mutex_lock(&dev->mutex);
105 if (dev->usbdev) {
106 status = usb_control_msg(dev->usbdev,
107 usb_rcvctrlpipe(dev->usbdev, 0),
108 request,
109 USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
110 value, index,
111 dev->ctrlmsg, size, 1000);
112
113 status = min(status, 0);
114
115 if (status < 0) {
116 printk(KERN_ERR "%s() Failed receiving control message, error %d.\n",
117 __func__, status);
118 }
119
120
121
122 memcpy(cp, dev->ctrlmsg, size);
123 }
124 mutex_unlock(&dev->mutex);
125 return status;
126}
127
128static void au0828_usb_release(struct au0828_dev *dev)
129{
130
131 au0828_i2c_unregister(dev);
132
133 kfree(dev);
134}
135
136#ifdef CONFIG_VIDEO_AU0828_V4L2
137static void au0828_usb_v4l2_release(struct v4l2_device *v4l2_dev)
138{
139 struct au0828_dev *dev =
140 container_of(v4l2_dev, struct au0828_dev, v4l2_dev);
141
142 v4l2_ctrl_handler_free(&dev->v4l2_ctrl_hdl);
143 v4l2_device_unregister(&dev->v4l2_dev);
144 au0828_usb_release(dev);
145}
146#endif
147
148static void au0828_usb_disconnect(struct usb_interface *interface)
149{
150 struct au0828_dev *dev = usb_get_intfdata(interface);
151
152 dprintk(1, "%s()\n", __func__);
153
154
155 au0828_dvb_unregister(dev);
156
157 usb_set_intfdata(interface, NULL);
158 mutex_lock(&dev->mutex);
159 dev->usbdev = NULL;
160 mutex_unlock(&dev->mutex);
161#ifdef CONFIG_VIDEO_AU0828_V4L2
162 if (AUVI_INPUT(0).type != AU0828_VMUX_UNDEFINED) {
163 au0828_analog_unregister(dev);
164 v4l2_device_disconnect(&dev->v4l2_dev);
165 v4l2_device_put(&dev->v4l2_dev);
166 return;
167 }
168#endif
169 au0828_usb_release(dev);
170}
171
172static int au0828_usb_probe(struct usb_interface *interface,
173 const struct usb_device_id *id)
174{
175 int ifnum;
176#ifdef CONFIG_VIDEO_AU0828_V4L2
177 int retval;
178#endif
179 struct au0828_dev *dev;
180 struct usb_device *usbdev = interface_to_usbdev(interface);
181
182 ifnum = interface->altsetting->desc.bInterfaceNumber;
183
184 if (ifnum != 0)
185 return -ENODEV;
186
187 dprintk(1, "%s() vendor id 0x%x device id 0x%x ifnum:%d\n", __func__,
188 le16_to_cpu(usbdev->descriptor.idVendor),
189 le16_to_cpu(usbdev->descriptor.idProduct),
190 ifnum);
191
192
193
194
195
196
197 if (usbdev->speed != USB_SPEED_HIGH && disable_usb_speed_check == 0) {
198 printk(KERN_ERR "au0828: Device initialization failed.\n");
199 printk(KERN_ERR "au0828: Device must be connected to a "
200 "high-speed USB 2.0 port.\n");
201 return -ENODEV;
202 }
203
204 dev = kzalloc(sizeof(*dev), GFP_KERNEL);
205 if (dev == NULL) {
206 printk(KERN_ERR "%s() Unable to allocate memory\n", __func__);
207 return -ENOMEM;
208 }
209
210 mutex_init(&dev->lock);
211 mutex_lock(&dev->lock);
212 mutex_init(&dev->mutex);
213 mutex_init(&dev->dvb.lock);
214 dev->usbdev = usbdev;
215 dev->boardnr = id->driver_info;
216
217#ifdef CONFIG_VIDEO_AU0828_V4L2
218 dev->v4l2_dev.release = au0828_usb_v4l2_release;
219
220
221 retval = v4l2_device_register(&interface->dev, &dev->v4l2_dev);
222 if (retval) {
223 pr_err("%s() v4l2_device_register failed\n",
224 __func__);
225 mutex_unlock(&dev->lock);
226 kfree(dev);
227 return retval;
228 }
229
230 retval = v4l2_ctrl_handler_init(&dev->v4l2_ctrl_hdl, 4);
231 if (retval) {
232 pr_err("%s() v4l2_ctrl_handler_init failed\n",
233 __func__);
234 mutex_unlock(&dev->lock);
235 kfree(dev);
236 return retval;
237 }
238 dev->v4l2_dev.ctrl_handler = &dev->v4l2_ctrl_hdl;
239#endif
240
241
242 au0828_write(dev, REG_600, 1 << 4);
243
244
245 au0828_gpio_setup(dev);
246
247
248 au0828_i2c_register(dev);
249
250
251 au0828_card_setup(dev);
252
253#ifdef CONFIG_VIDEO_AU0828_V4L2
254
255 if (AUVI_INPUT(0).type != AU0828_VMUX_UNDEFINED)
256 au0828_analog_register(dev, interface);
257#endif
258
259
260 au0828_dvb_register(dev);
261
262
263
264 usb_set_intfdata(interface, dev);
265
266 printk(KERN_INFO "Registered device AU0828 [%s]\n",
267 dev->board.name == NULL ? "Unset" : dev->board.name);
268
269 mutex_unlock(&dev->lock);
270
271 return 0;
272}
273
274static struct usb_driver au0828_usb_driver = {
275 .name = DRIVER_NAME,
276 .probe = au0828_usb_probe,
277 .disconnect = au0828_usb_disconnect,
278 .id_table = au0828_usb_id_table,
279};
280
281static int __init au0828_init(void)
282{
283 int ret;
284
285 if (au0828_debug & 1)
286 printk(KERN_INFO "%s() Debugging is enabled\n", __func__);
287
288 if (au0828_debug & 2)
289 printk(KERN_INFO "%s() USB Debugging is enabled\n", __func__);
290
291 if (au0828_debug & 4)
292 printk(KERN_INFO "%s() I2C Debugging is enabled\n", __func__);
293
294 if (au0828_debug & 8)
295 printk(KERN_INFO "%s() Bridge Debugging is enabled\n",
296 __func__);
297
298 printk(KERN_INFO "au0828 driver loaded\n");
299
300 ret = usb_register(&au0828_usb_driver);
301 if (ret)
302 printk(KERN_ERR "usb_register failed, error = %d\n", ret);
303
304 return ret;
305}
306
307static void __exit au0828_exit(void)
308{
309 usb_deregister(&au0828_usb_driver);
310}
311
312module_init(au0828_init);
313module_exit(au0828_exit);
314
315MODULE_DESCRIPTION("Driver for Auvitek AU0828 based products");
316MODULE_AUTHOR("Steven Toth <stoth@linuxtv.org>");
317MODULE_LICENSE("GPL");
318MODULE_VERSION("0.0.2");
319
