1 /*
2 * USB USBVISION Video device driver 0.9.10
3 *
4 *
5 *
6 * Copyright (c) 1999-2005 Joerg Heckenbach <joerg@heckenbach-aw.de>
7 *
8 * This module is part of usbvision driver project.
9 *
10 * This program is free software; you can redistribute it and/or modify
11 * it under the terms of the GNU General Public License as published by
12 * the Free Software Foundation; either version 2 of the License, or
13 * (at your option) any later version.
14 *
15 * This program is distributed in the hope that it will be useful,
16 * but WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 * GNU General Public License for more details.
19 *
20 * You should have received a copy of the GNU General Public License
21 * along with this program; if not, write to the Free Software
22 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
23 *
24 * Let's call the version 0.... until compression decoding is completely
25 * implemented.
26 *
27 * This driver is written by Jose Ignacio Gijon and Joerg Heckenbach.
28 * It was based on USB CPiA driver written by Peter Pregler,
29 * Scott J. Bertin and Johannes Erdfelt
30 * Ideas are taken from bttv driver by Ralph Metzler, Marcus Metzler &
31 * Gerd Knorr and zoran 36120/36125 driver by Pauline Middelink
32 * Updates to driver completed by Dwaine P. Garden
33 *
34 *
35 * TODO:
36 * - use submit_urb for all setup packets
37 * - Fix memory settings for nt1004. It is 4 times as big as the
38 * nt1003 memory.
39 * - Add audio on endpoint 3 for nt1004 chip.
40 * Seems impossible, needs a codec interface. Which one?
41 * - Clean up the driver.
42 * - optimization for performance.
43 * - Add Videotext capability (VBI). Working on it.....
44 * - Check audio for other devices
45 *
46 */
47
48 #include <linux/kernel.h>
49 #include <linux/list.h>
50 #include <linux/timer.h>
51 #include <linux/slab.h>
52 #include <linux/mm.h>
53 #include <linux/highmem.h>
54 #include <linux/vmalloc.h>
55 #include <linux/module.h>
56 #include <linux/init.h>
57 #include <linux/spinlock.h>
58 #include <linux/io.h>
59 #include <linux/videodev2.h>
60 #include <linux/i2c.h>
61
62 #include <media/saa7115.h>
63 #include <media/v4l2-common.h>
64 #include <media/v4l2-ioctl.h>
65 #include <media/tuner.h>
66
67 #include <linux/workqueue.h>
68
69 #include "usbvision.h"
70 #include "usbvision-cards.h"
71
72 #define DRIVER_AUTHOR \
73 "Joerg Heckenbach <joerg@heckenbach-aw.de>, " \
74 "Dwaine Garden <DwaineGarden@rogers.com>"
75 #define DRIVER_NAME "usbvision"
76 #define DRIVER_ALIAS "USBVision"
77 #define DRIVER_DESC "USBVision USB Video Device Driver for Linux"
78 #define DRIVER_LICENSE "GPL"
79 #define USBVISION_VERSION_STRING "0.9.11"
80
81 #define ENABLE_HEXDUMP 0 /* Enable if you need it */
82
83
84 #ifdef USBVISION_DEBUG
85 #define PDEBUG(level, fmt, args...) { \
86 if (video_debug & (level)) \
87 printk(KERN_INFO KBUILD_MODNAME ":[%s:%d] " fmt, \
88 __func__, __LINE__ , ## args); \
89 }
90 #else
91 #define PDEBUG(level, fmt, args...) do {} while (0)
92 #endif
93
94 #define DBG_IO (1 << 1)
95 #define DBG_PROBE (1 << 2)
96 #define DBG_MMAP (1 << 3)
97
98 /* String operations */
99 #define rmspace(str) while (*str == ' ') str++;
100 #define goto2next(str) while (*str != ' ') str++; while (*str == ' ') str++;
101
102
103 /* sequential number of usbvision device */
104 static int usbvision_nr;
105
106 static struct usbvision_v4l2_format_st usbvision_v4l2_format[] = {
107 { 1, 1, 8, V4L2_PIX_FMT_GREY , "GREY" },
108 { 1, 2, 16, V4L2_PIX_FMT_RGB565 , "RGB565" },
109 { 1, 3, 24, V4L2_PIX_FMT_RGB24 , "RGB24" },
110 { 1, 4, 32, V4L2_PIX_FMT_RGB32 , "RGB32" },
111 { 1, 2, 16, V4L2_PIX_FMT_RGB555 , "RGB555" },
112 { 1, 2, 16, V4L2_PIX_FMT_YUYV , "YUV422" },
113 { 1, 2, 12, V4L2_PIX_FMT_YVU420 , "YUV420P" }, /* 1.5 ! */
114 { 1, 2, 16, V4L2_PIX_FMT_YUV422P , "YUV422P" }
115 };
116
117 /* Function prototypes */
118 static void usbvision_release(struct usb_usbvision *usbvision);
119
120 /* Default initialization of device driver parameters */
121 /* Set the default format for ISOC endpoint */
122 static int isoc_mode = ISOC_MODE_COMPRESS;
123 /* Set the default Debug Mode of the device driver */
124 static int video_debug;
125 /* Set the default device to power on at startup */
126 static int power_on_at_open = 1;
127 /* Sequential Number of Video Device */
128 static int video_nr = -1;
129 /* Sequential Number of Radio Device */
130 static int radio_nr = -1;
131
132 /* Grab parameters for the device driver */
133
134 /* Showing parameters under SYSFS */
135 module_param(isoc_mode, int, 0444);
136 module_param(video_debug, int, 0444);
137 module_param(power_on_at_open, int, 0444);
138 module_param(video_nr, int, 0444);
139 module_param(radio_nr, int, 0444);
140
141 MODULE_PARM_DESC(isoc_mode, " Set the default format for ISOC endpoint. Default: 0x60 (Compression On)");
142 MODULE_PARM_DESC(video_debug, " Set the default Debug Mode of the device driver. Default: 0 (Off)");
143 MODULE_PARM_DESC(power_on_at_open, " Set the default device to power on when device is opened. Default: 1 (On)");
144 MODULE_PARM_DESC(video_nr, "Set video device number (/dev/videoX). Default: -1 (autodetect)");
145 MODULE_PARM_DESC(radio_nr, "Set radio device number (/dev/radioX). Default: -1 (autodetect)");
146
147
148 /* Misc stuff */
149 MODULE_AUTHOR(DRIVER_AUTHOR);
150 MODULE_DESCRIPTION(DRIVER_DESC);
151 MODULE_LICENSE(DRIVER_LICENSE);
152 MODULE_VERSION(USBVISION_VERSION_STRING);
153 MODULE_ALIAS(DRIVER_ALIAS);
154
155
156 /*****************************************************************************/
157 /* SYSFS Code - Copied from the stv680.c usb module. */
158 /* Device information is located at /sys/class/video4linux/video0 */
159 /* Device parameters information is located at /sys/module/usbvision */
160 /* Device USB Information is located at */
161 /* /sys/bus/usb/drivers/USBVision Video Grabber */
162 /*****************************************************************************/
163
164 #define YES_NO(x) ((x) ? "Yes" : "No")
165
cd_to_usbvision(struct device * cd)166 static inline struct usb_usbvision *cd_to_usbvision(struct device *cd)
167 {
168 struct video_device *vdev =
169 container_of(cd, struct video_device, dev);
170 return video_get_drvdata(vdev);
171 }
172
show_version(struct device * cd,struct device_attribute * attr,char * buf)173 static ssize_t show_version(struct device *cd,
174 struct device_attribute *attr, char *buf)
175 {
176 return sprintf(buf, "%s\n", USBVISION_VERSION_STRING);
177 }
178 static DEVICE_ATTR(version, S_IRUGO, show_version, NULL);
179
show_model(struct device * cd,struct device_attribute * attr,char * buf)180 static ssize_t show_model(struct device *cd,
181 struct device_attribute *attr, char *buf)
182 {
183 struct video_device *vdev =
184 container_of(cd, struct video_device, dev);
185 struct usb_usbvision *usbvision = video_get_drvdata(vdev);
186 return sprintf(buf, "%s\n",
187 usbvision_device_data[usbvision->dev_model].model_string);
188 }
189 static DEVICE_ATTR(model, S_IRUGO, show_model, NULL);
190
show_hue(struct device * cd,struct device_attribute * attr,char * buf)191 static ssize_t show_hue(struct device *cd,
192 struct device_attribute *attr, char *buf)
193 {
194 struct video_device *vdev =
195 container_of(cd, struct video_device, dev);
196 struct usb_usbvision *usbvision = video_get_drvdata(vdev);
197 struct v4l2_control ctrl;
198 ctrl.id = V4L2_CID_HUE;
199 ctrl.value = 0;
200 if (usbvision->user)
201 call_all(usbvision, core, g_ctrl, &ctrl);
202 return sprintf(buf, "%d\n", ctrl.value);
203 }
204 static DEVICE_ATTR(hue, S_IRUGO, show_hue, NULL);
205
show_contrast(struct device * cd,struct device_attribute * attr,char * buf)206 static ssize_t show_contrast(struct device *cd,
207 struct device_attribute *attr, char *buf)
208 {
209 struct video_device *vdev =
210 container_of(cd, struct video_device, dev);
211 struct usb_usbvision *usbvision = video_get_drvdata(vdev);
212 struct v4l2_control ctrl;
213 ctrl.id = V4L2_CID_CONTRAST;
214 ctrl.value = 0;
215 if (usbvision->user)
216 call_all(usbvision, core, g_ctrl, &ctrl);
217 return sprintf(buf, "%d\n", ctrl.value);
218 }
219 static DEVICE_ATTR(contrast, S_IRUGO, show_contrast, NULL);
220
show_brightness(struct device * cd,struct device_attribute * attr,char * buf)221 static ssize_t show_brightness(struct device *cd,
222 struct device_attribute *attr, char *buf)
223 {
224 struct video_device *vdev =
225 container_of(cd, struct video_device, dev);
226 struct usb_usbvision *usbvision = video_get_drvdata(vdev);
227 struct v4l2_control ctrl;
228 ctrl.id = V4L2_CID_BRIGHTNESS;
229 ctrl.value = 0;
230 if (usbvision->user)
231 call_all(usbvision, core, g_ctrl, &ctrl);
232 return sprintf(buf, "%d\n", ctrl.value);
233 }
234 static DEVICE_ATTR(brightness, S_IRUGO, show_brightness, NULL);
235
show_saturation(struct device * cd,struct device_attribute * attr,char * buf)236 static ssize_t show_saturation(struct device *cd,
237 struct device_attribute *attr, char *buf)
238 {
239 struct video_device *vdev =
240 container_of(cd, struct video_device, dev);
241 struct usb_usbvision *usbvision = video_get_drvdata(vdev);
242 struct v4l2_control ctrl;
243 ctrl.id = V4L2_CID_SATURATION;
244 ctrl.value = 0;
245 if (usbvision->user)
246 call_all(usbvision, core, g_ctrl, &ctrl);
247 return sprintf(buf, "%d\n", ctrl.value);
248 }
249 static DEVICE_ATTR(saturation, S_IRUGO, show_saturation, NULL);
250
show_streaming(struct device * cd,struct device_attribute * attr,char * buf)251 static ssize_t show_streaming(struct device *cd,
252 struct device_attribute *attr, char *buf)
253 {
254 struct video_device *vdev =
255 container_of(cd, struct video_device, dev);
256 struct usb_usbvision *usbvision = video_get_drvdata(vdev);
257 return sprintf(buf, "%s\n",
258 YES_NO(usbvision->streaming == stream_on ? 1 : 0));
259 }
260 static DEVICE_ATTR(streaming, S_IRUGO, show_streaming, NULL);
261
show_compression(struct device * cd,struct device_attribute * attr,char * buf)262 static ssize_t show_compression(struct device *cd,
263 struct device_attribute *attr, char *buf)
264 {
265 struct video_device *vdev =
266 container_of(cd, struct video_device, dev);
267 struct usb_usbvision *usbvision = video_get_drvdata(vdev);
268 return sprintf(buf, "%s\n",
269 YES_NO(usbvision->isoc_mode == ISOC_MODE_COMPRESS));
270 }
271 static DEVICE_ATTR(compression, S_IRUGO, show_compression, NULL);
272
show_device_bridge(struct device * cd,struct device_attribute * attr,char * buf)273 static ssize_t show_device_bridge(struct device *cd,
274 struct device_attribute *attr, char *buf)
275 {
276 struct video_device *vdev =
277 container_of(cd, struct video_device, dev);
278 struct usb_usbvision *usbvision = video_get_drvdata(vdev);
279 return sprintf(buf, "%d\n", usbvision->bridge_type);
280 }
281 static DEVICE_ATTR(bridge, S_IRUGO, show_device_bridge, NULL);
282
usbvision_create_sysfs(struct video_device * vdev)283 static void usbvision_create_sysfs(struct video_device *vdev)
284 {
285 int res;
286
287 if (!vdev)
288 return;
289 do {
290 res = device_create_file(&vdev->dev, &dev_attr_version);
291 if (res < 0)
292 break;
293 res = device_create_file(&vdev->dev, &dev_attr_model);
294 if (res < 0)
295 break;
296 res = device_create_file(&vdev->dev, &dev_attr_hue);
297 if (res < 0)
298 break;
299 res = device_create_file(&vdev->dev, &dev_attr_contrast);
300 if (res < 0)
301 break;
302 res = device_create_file(&vdev->dev, &dev_attr_brightness);
303 if (res < 0)
304 break;
305 res = device_create_file(&vdev->dev, &dev_attr_saturation);
306 if (res < 0)
307 break;
308 res = device_create_file(&vdev->dev, &dev_attr_streaming);
309 if (res < 0)
310 break;
311 res = device_create_file(&vdev->dev, &dev_attr_compression);
312 if (res < 0)
313 break;
314 res = device_create_file(&vdev->dev, &dev_attr_bridge);
315 if (res >= 0)
316 return;
317 } while (0);
318
319 dev_err(&vdev->dev, "%s error: %d\n", __func__, res);
320 }
321
usbvision_remove_sysfs(struct video_device * vdev)322 static void usbvision_remove_sysfs(struct video_device *vdev)
323 {
324 if (vdev) {
325 device_remove_file(&vdev->dev, &dev_attr_version);
326 device_remove_file(&vdev->dev, &dev_attr_model);
327 device_remove_file(&vdev->dev, &dev_attr_hue);
328 device_remove_file(&vdev->dev, &dev_attr_contrast);
329 device_remove_file(&vdev->dev, &dev_attr_brightness);
330 device_remove_file(&vdev->dev, &dev_attr_saturation);
331 device_remove_file(&vdev->dev, &dev_attr_streaming);
332 device_remove_file(&vdev->dev, &dev_attr_compression);
333 device_remove_file(&vdev->dev, &dev_attr_bridge);
334 }
335 }
336
337 /*
338 * usbvision_open()
339 *
340 * This is part of Video 4 Linux API. The driver can be opened by one
341 * client only (checks internal counter 'usbvision->user'). The procedure
342 * then allocates buffers needed for video processing.
343 *
344 */
usbvision_v4l2_open(struct file * file)345 static int usbvision_v4l2_open(struct file *file)
346 {
347 struct usb_usbvision *usbvision = video_drvdata(file);
348 int err_code = 0;
349
350 PDEBUG(DBG_IO, "open");
351
352 if (mutex_lock_interruptible(&usbvision->v4l2_lock))
353 return -ERESTARTSYS;
354 usbvision_reset_power_off_timer(usbvision);
355
356 if (usbvision->user)
357 err_code = -EBUSY;
358 else {
359 /* Allocate memory for the scratch ring buffer */
360 err_code = usbvision_scratch_alloc(usbvision);
361 if (isoc_mode == ISOC_MODE_COMPRESS) {
362 /* Allocate intermediate decompression buffers
363 only if needed */
364 err_code = usbvision_decompress_alloc(usbvision);
365 }
366 if (err_code) {
367 /* Deallocate all buffers if trouble */
368 usbvision_scratch_free(usbvision);
369 usbvision_decompress_free(usbvision);
370 }
371 }
372
373 /* If so far no errors then we shall start the camera */
374 if (!err_code) {
375 if (usbvision->power == 0) {
376 usbvision_power_on(usbvision);
377 usbvision_i2c_register(usbvision);
378 }
379
380 /* Send init sequence only once, it's large! */
381 if (!usbvision->initialized) {
382 int setup_ok = 0;
383 setup_ok = usbvision_setup(usbvision, isoc_mode);
384 if (setup_ok)
385 usbvision->initialized = 1;
386 else
387 err_code = -EBUSY;
388 }
389
390 if (!err_code) {
391 usbvision_begin_streaming(usbvision);
392 err_code = usbvision_init_isoc(usbvision);
393 /* device must be initialized before isoc transfer */
394 usbvision_muxsel(usbvision, 0);
395 usbvision->user++;
396 } else {
397 if (power_on_at_open) {
398 usbvision_i2c_unregister(usbvision);
399 usbvision_power_off(usbvision);
400 usbvision->initialized = 0;
401 }
402 }
403 }
404
405 /* prepare queues */
406 usbvision_empty_framequeues(usbvision);
407 mutex_unlock(&usbvision->v4l2_lock);
408
409 PDEBUG(DBG_IO, "success");
410 return err_code;
411 }
412
413 /*
414 * usbvision_v4l2_close()
415 *
416 * This is part of Video 4 Linux API. The procedure
417 * stops streaming and deallocates all buffers that were earlier
418 * allocated in usbvision_v4l2_open().
419 *
420 */
usbvision_v4l2_close(struct file * file)421 static int usbvision_v4l2_close(struct file *file)
422 {
423 struct usb_usbvision *usbvision = video_drvdata(file);
424
425 PDEBUG(DBG_IO, "close");
426
427 mutex_lock(&usbvision->v4l2_lock);
428 usbvision_audio_off(usbvision);
429 usbvision_restart_isoc(usbvision);
430 usbvision_stop_isoc(usbvision);
431
432 usbvision_decompress_free(usbvision);
433 usbvision_frames_free(usbvision);
434 usbvision_empty_framequeues(usbvision);
435 usbvision_scratch_free(usbvision);
436
437 usbvision->user--;
438 mutex_unlock(&usbvision->v4l2_lock);
439
440 if (power_on_at_open) {
441 /* power off in a little while
442 to avoid off/on every close/open short sequences */
443 usbvision_set_power_off_timer(usbvision);
444 usbvision->initialized = 0;
445 }
446
447 if (usbvision->remove_pending) {
448 printk(KERN_INFO "%s: Final disconnect\n", __func__);
449 usbvision_release(usbvision);
450 return 0;
451 }
452
453 PDEBUG(DBG_IO, "success");
454 return 0;
455 }
456
457
458 /*
459 * usbvision_ioctl()
460 *
461 * This is part of Video 4 Linux API. The procedure handles ioctl() calls.
462 *
463 */
464 #ifdef CONFIG_VIDEO_ADV_DEBUG
vidioc_g_register(struct file * file,void * priv,struct v4l2_dbg_register * reg)465 static int vidioc_g_register(struct file *file, void *priv,
466 struct v4l2_dbg_register *reg)
467 {
468 struct usb_usbvision *usbvision = video_drvdata(file);
469 int err_code;
470
471 /* NT100x has a 8-bit register space */
472 err_code = usbvision_read_reg(usbvision, reg->reg&0xff);
473 if (err_code < 0) {
474 dev_err(&usbvision->vdev->dev,
475 "%s: VIDIOC_DBG_G_REGISTER failed: error %d\n",
476 __func__, err_code);
477 return err_code;
478 }
479 reg->val = err_code;
480 reg->size = 1;
481 return 0;
482 }
483
vidioc_s_register(struct file * file,void * priv,const struct v4l2_dbg_register * reg)484 static int vidioc_s_register(struct file *file, void *priv,
485 const struct v4l2_dbg_register *reg)
486 {
487 struct usb_usbvision *usbvision = video_drvdata(file);
488 int err_code;
489
490 /* NT100x has a 8-bit register space */
491 err_code = usbvision_write_reg(usbvision, reg->reg & 0xff, reg->val);
492 if (err_code < 0) {
493 dev_err(&usbvision->vdev->dev,
494 "%s: VIDIOC_DBG_S_REGISTER failed: error %d\n",
495 __func__, err_code);
496 return err_code;
497 }
498 return 0;
499 }
500 #endif
501
vidioc_querycap(struct file * file,void * priv,struct v4l2_capability * vc)502 static int vidioc_querycap(struct file *file, void *priv,
503 struct v4l2_capability *vc)
504 {
505 struct usb_usbvision *usbvision = video_drvdata(file);
506
507 strlcpy(vc->driver, "USBVision", sizeof(vc->driver));
508 strlcpy(vc->card,
509 usbvision_device_data[usbvision->dev_model].model_string,
510 sizeof(vc->card));
511 usb_make_path(usbvision->dev, vc->bus_info, sizeof(vc->bus_info));
512 vc->capabilities = V4L2_CAP_VIDEO_CAPTURE |
513 V4L2_CAP_AUDIO |
514 V4L2_CAP_READWRITE |
515 V4L2_CAP_STREAMING |
516 (usbvision->have_tuner ? V4L2_CAP_TUNER : 0);
517 return 0;
518 }
519
vidioc_enum_input(struct file * file,void * priv,struct v4l2_input * vi)520 static int vidioc_enum_input(struct file *file, void *priv,
521 struct v4l2_input *vi)
522 {
523 struct usb_usbvision *usbvision = video_drvdata(file);
524 int chan;
525
526 if (vi->index >= usbvision->video_inputs)
527 return -EINVAL;
528 if (usbvision->have_tuner)
529 chan = vi->index;
530 else
531 chan = vi->index + 1; /* skip Television string*/
532
533 /* Determine the requested input characteristics
534 specific for each usbvision card model */
535 switch (chan) {
536 case 0:
537 if (usbvision_device_data[usbvision->dev_model].video_channels == 4) {
538 strcpy(vi->name, "White Video Input");
539 } else {
540 strcpy(vi->name, "Television");
541 vi->type = V4L2_INPUT_TYPE_TUNER;
542 vi->audioset = 1;
543 vi->tuner = chan;
544 vi->std = USBVISION_NORMS;
545 }
546 break;
547 case 1:
548 vi->type = V4L2_INPUT_TYPE_CAMERA;
549 if (usbvision_device_data[usbvision->dev_model].video_channels == 4)
550 strcpy(vi->name, "Green Video Input");
551 else
552 strcpy(vi->name, "Composite Video Input");
553 vi->std = V4L2_STD_PAL;
554 break;
555 case 2:
556 vi->type = V4L2_INPUT_TYPE_CAMERA;
557 if (usbvision_device_data[usbvision->dev_model].video_channels == 4)
558 strcpy(vi->name, "Yellow Video Input");
559 else
560 strcpy(vi->name, "S-Video Input");
561 vi->std = V4L2_STD_PAL;
562 break;
563 case 3:
564 vi->type = V4L2_INPUT_TYPE_CAMERA;
565 strcpy(vi->name, "Red Video Input");
566 vi->std = V4L2_STD_PAL;
567 break;
568 }
569 return 0;
570 }
571
vidioc_g_input(struct file * file,void * priv,unsigned int * input)572 static int vidioc_g_input(struct file *file, void *priv, unsigned int *input)
573 {
574 struct usb_usbvision *usbvision = video_drvdata(file);
575
576 *input = usbvision->ctl_input;
577 return 0;
578 }
579
vidioc_s_input(struct file * file,void * priv,unsigned int input)580 static int vidioc_s_input(struct file *file, void *priv, unsigned int input)
581 {
582 struct usb_usbvision *usbvision = video_drvdata(file);
583
584 if (input >= usbvision->video_inputs)
585 return -EINVAL;
586
587 usbvision_muxsel(usbvision, input);
588 usbvision_set_input(usbvision);
589 usbvision_set_output(usbvision,
590 usbvision->curwidth,
591 usbvision->curheight);
592 return 0;
593 }
594
vidioc_s_std(struct file * file,void * priv,v4l2_std_id id)595 static int vidioc_s_std(struct file *file, void *priv, v4l2_std_id id)
596 {
597 struct usb_usbvision *usbvision = video_drvdata(file);
598
599 usbvision->tvnorm_id = id;
600
601 call_all(usbvision, video, s_std, usbvision->tvnorm_id);
602 /* propagate the change to the decoder */
603 usbvision_muxsel(usbvision, usbvision->ctl_input);
604
605 return 0;
606 }
607
vidioc_g_std(struct file * file,void * priv,v4l2_std_id * id)608 static int vidioc_g_std(struct file *file, void *priv, v4l2_std_id *id)
609 {
610 struct usb_usbvision *usbvision = video_drvdata(file);
611
612 *id = usbvision->tvnorm_id;
613 return 0;
614 }
615
vidioc_g_tuner(struct file * file,void * priv,struct v4l2_tuner * vt)616 static int vidioc_g_tuner(struct file *file, void *priv,
617 struct v4l2_tuner *vt)
618 {
619 struct usb_usbvision *usbvision = video_drvdata(file);
620
621 if (!usbvision->have_tuner || vt->index) /* Only tuner 0 */
622 return -EINVAL;
623 if (usbvision->radio) {
624 strcpy(vt->name, "Radio");
625 vt->type = V4L2_TUNER_RADIO;
626 } else {
627 strcpy(vt->name, "Television");
628 }
629 /* Let clients fill in the remainder of this struct */
630 call_all(usbvision, tuner, g_tuner, vt);
631
632 return 0;
633 }
634
vidioc_s_tuner(struct file * file,void * priv,const struct v4l2_tuner * vt)635 static int vidioc_s_tuner(struct file *file, void *priv,
636 const struct v4l2_tuner *vt)
637 {
638 struct usb_usbvision *usbvision = video_drvdata(file);
639
640 /* Only no or one tuner for now */
641 if (!usbvision->have_tuner || vt->index)
642 return -EINVAL;
643 /* let clients handle this */
644 call_all(usbvision, tuner, s_tuner, vt);
645
646 return 0;
647 }
648
vidioc_g_frequency(struct file * file,void * priv,struct v4l2_frequency * freq)649 static int vidioc_g_frequency(struct file *file, void *priv,
650 struct v4l2_frequency *freq)
651 {
652 struct usb_usbvision *usbvision = video_drvdata(file);
653
654 freq->tuner = 0; /* Only one tuner */
655 if (usbvision->radio)
656 freq->type = V4L2_TUNER_RADIO;
657 else
658 freq->type = V4L2_TUNER_ANALOG_TV;
659 freq->frequency = usbvision->freq;
660
661 return 0;
662 }
663
vidioc_s_frequency(struct file * file,void * priv,const struct v4l2_frequency * freq)664 static int vidioc_s_frequency(struct file *file, void *priv,
665 const struct v4l2_frequency *freq)
666 {
667 struct usb_usbvision *usbvision = video_drvdata(file);
668
669 /* Only no or one tuner for now */
670 if (!usbvision->have_tuner || freq->tuner)
671 return -EINVAL;
672
673 usbvision->freq = freq->frequency;
674 call_all(usbvision, tuner, s_frequency, freq);
675
676 return 0;
677 }
678
vidioc_g_audio(struct file * file,void * priv,struct v4l2_audio * a)679 static int vidioc_g_audio(struct file *file, void *priv, struct v4l2_audio *a)
680 {
681 struct usb_usbvision *usbvision = video_drvdata(file);
682
683 if (usbvision->radio)
684 strcpy(a->name, "Radio");
685 else
686 strcpy(a->name, "TV");
687
688 return 0;
689 }
690
vidioc_s_audio(struct file * file,void * fh,const struct v4l2_audio * a)691 static int vidioc_s_audio(struct file *file, void *fh,
692 const struct v4l2_audio *a)
693 {
694 if (a->index)
695 return -EINVAL;
696 return 0;
697 }
698
vidioc_queryctrl(struct file * file,void * priv,struct v4l2_queryctrl * ctrl)699 static int vidioc_queryctrl(struct file *file, void *priv,
700 struct v4l2_queryctrl *ctrl)
701 {
702 struct usb_usbvision *usbvision = video_drvdata(file);
703
704 call_all(usbvision, core, queryctrl, ctrl);
705
706 if (!ctrl->type)
707 return -EINVAL;
708
709 return 0;
710 }
711
vidioc_g_ctrl(struct file * file,void * priv,struct v4l2_control * ctrl)712 static int vidioc_g_ctrl(struct file *file, void *priv,
713 struct v4l2_control *ctrl)
714 {
715 struct usb_usbvision *usbvision = video_drvdata(file);
716
717 call_all(usbvision, core, g_ctrl, ctrl);
718 return 0;
719 }
720
vidioc_s_ctrl(struct file * file,void * priv,struct v4l2_control * ctrl)721 static int vidioc_s_ctrl(struct file *file, void *priv,
722 struct v4l2_control *ctrl)
723 {
724 struct usb_usbvision *usbvision = video_drvdata(file);
725
726 call_all(usbvision, core, s_ctrl, ctrl);
727 return 0;
728 }
729
vidioc_reqbufs(struct file * file,void * priv,struct v4l2_requestbuffers * vr)730 static int vidioc_reqbufs(struct file *file,
731 void *priv, struct v4l2_requestbuffers *vr)
732 {
733 struct usb_usbvision *usbvision = video_drvdata(file);
734 int ret;
735
736 RESTRICT_TO_RANGE(vr->count, 1, USBVISION_NUMFRAMES);
737
738 /* Check input validity:
739 the user must do a VIDEO CAPTURE and MMAP method. */
740 if (vr->memory != V4L2_MEMORY_MMAP)
741 return -EINVAL;
742
743 if (usbvision->streaming == stream_on) {
744 ret = usbvision_stream_interrupt(usbvision);
745 if (ret)
746 return ret;
747 }
748
749 usbvision_frames_free(usbvision);
750 usbvision_empty_framequeues(usbvision);
751 vr->count = usbvision_frames_alloc(usbvision, vr->count);
752
753 usbvision->cur_frame = NULL;
754
755 return 0;
756 }
757
vidioc_querybuf(struct file * file,void * priv,struct v4l2_buffer * vb)758 static int vidioc_querybuf(struct file *file,
759 void *priv, struct v4l2_buffer *vb)
760 {
761 struct usb_usbvision *usbvision = video_drvdata(file);
762 struct usbvision_frame *frame;
763
764 /* FIXME : must control
765 that buffers are mapped (VIDIOC_REQBUFS has been called) */
766 if (vb->index >= usbvision->num_frames)
767 return -EINVAL;
768 /* Updating the corresponding frame state */
769 vb->flags = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC;
770 frame = &usbvision->frame[vb->index];
771 if (frame->grabstate >= frame_state_ready)
772 vb->flags |= V4L2_BUF_FLAG_QUEUED;
773 if (frame->grabstate >= frame_state_done)
774 vb->flags |= V4L2_BUF_FLAG_DONE;
775 if (frame->grabstate == frame_state_unused)
776 vb->flags |= V4L2_BUF_FLAG_MAPPED;
777 vb->memory = V4L2_MEMORY_MMAP;
778
779 vb->m.offset = vb->index * PAGE_ALIGN(usbvision->max_frame_size);
780
781 vb->memory = V4L2_MEMORY_MMAP;
782 vb->field = V4L2_FIELD_NONE;
783 vb->length = usbvision->curwidth *
784 usbvision->curheight *
785 usbvision->palette.bytes_per_pixel;
786 vb->timestamp = usbvision->frame[vb->index].timestamp;
787 vb->sequence = usbvision->frame[vb->index].sequence;
788 return 0;
789 }
790
vidioc_qbuf(struct file * file,void * priv,struct v4l2_buffer * vb)791 static int vidioc_qbuf(struct file *file, void *priv, struct v4l2_buffer *vb)
792 {
793 struct usb_usbvision *usbvision = video_drvdata(file);
794 struct usbvision_frame *frame;
795 unsigned long lock_flags;
796
797 /* FIXME : works only on VIDEO_CAPTURE MODE, MMAP. */
798 if (vb->index >= usbvision->num_frames)
799 return -EINVAL;
800
801 frame = &usbvision->frame[vb->index];
802
803 if (frame->grabstate != frame_state_unused)
804 return -EAGAIN;
805
806 /* Mark it as ready and enqueue frame */
807 frame->grabstate = frame_state_ready;
808 frame->scanstate = scan_state_scanning;
809 frame->scanlength = 0; /* Accumulated in usbvision_parse_data() */
810
811 vb->flags &= ~V4L2_BUF_FLAG_DONE;
812
813 /* set v4l2_format index */
814 frame->v4l2_format = usbvision->palette;
815
816 spin_lock_irqsave(&usbvision->queue_lock, lock_flags);
817 list_add_tail(&usbvision->frame[vb->index].frame, &usbvision->inqueue);
818 spin_unlock_irqrestore(&usbvision->queue_lock, lock_flags);
819
820 return 0;
821 }
822
vidioc_dqbuf(struct file * file,void * priv,struct v4l2_buffer * vb)823 static int vidioc_dqbuf(struct file *file, void *priv, struct v4l2_buffer *vb)
824 {
825 struct usb_usbvision *usbvision = video_drvdata(file);
826 int ret;
827 struct usbvision_frame *f;
828 unsigned long lock_flags;
829
830 if (list_empty(&(usbvision->outqueue))) {
831 if (usbvision->streaming == stream_idle)
832 return -EINVAL;
833 ret = wait_event_interruptible
834 (usbvision->wait_frame,
835 !list_empty(&(usbvision->outqueue)));
836 if (ret)
837 return ret;
838 }
839
840 spin_lock_irqsave(&usbvision->queue_lock, lock_flags);
841 f = list_entry(usbvision->outqueue.next,
842 struct usbvision_frame, frame);
843 list_del(usbvision->outqueue.next);
844 spin_unlock_irqrestore(&usbvision->queue_lock, lock_flags);
845
846 f->grabstate = frame_state_unused;
847
848 vb->memory = V4L2_MEMORY_MMAP;
849 vb->flags = V4L2_BUF_FLAG_MAPPED |
850 V4L2_BUF_FLAG_QUEUED |
851 V4L2_BUF_FLAG_DONE |
852 V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC;
853 vb->index = f->index;
854 vb->sequence = f->sequence;
855 vb->timestamp = f->timestamp;
856 vb->field = V4L2_FIELD_NONE;
857 vb->bytesused = f->scanlength;
858
859 return 0;
860 }
861
vidioc_streamon(struct file * file,void * priv,enum v4l2_buf_type i)862 static int vidioc_streamon(struct file *file, void *priv, enum v4l2_buf_type i)
863 {
864 struct usb_usbvision *usbvision = video_drvdata(file);
865
866 usbvision->streaming = stream_on;
867 call_all(usbvision, video, s_stream, 1);
868
869 return 0;
870 }
871
vidioc_streamoff(struct file * file,void * priv,enum v4l2_buf_type type)872 static int vidioc_streamoff(struct file *file,
873 void *priv, enum v4l2_buf_type type)
874 {
875 struct usb_usbvision *usbvision = video_drvdata(file);
876
877 if (type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
878 return -EINVAL;
879
880 if (usbvision->streaming == stream_on) {
881 usbvision_stream_interrupt(usbvision);
882 /* Stop all video streamings */
883 call_all(usbvision, video, s_stream, 0);
884 }
885 usbvision_empty_framequeues(usbvision);
886
887 return 0;
888 }
889
vidioc_enum_fmt_vid_cap(struct file * file,void * priv,struct v4l2_fmtdesc * vfd)890 static int vidioc_enum_fmt_vid_cap(struct file *file, void *priv,
891 struct v4l2_fmtdesc *vfd)
892 {
893 if (vfd->index >= USBVISION_SUPPORTED_PALETTES - 1)
894 return -EINVAL;
895 strcpy(vfd->description, usbvision_v4l2_format[vfd->index].desc);
896 vfd->pixelformat = usbvision_v4l2_format[vfd->index].format;
897 return 0;
898 }
899
vidioc_g_fmt_vid_cap(struct file * file,void * priv,struct v4l2_format * vf)900 static int vidioc_g_fmt_vid_cap(struct file *file, void *priv,
901 struct v4l2_format *vf)
902 {
903 struct usb_usbvision *usbvision = video_drvdata(file);
904 vf->fmt.pix.width = usbvision->curwidth;
905 vf->fmt.pix.height = usbvision->curheight;
906 vf->fmt.pix.pixelformat = usbvision->palette.format;
907 vf->fmt.pix.bytesperline =
908 usbvision->curwidth * usbvision->palette.bytes_per_pixel;
909 vf->fmt.pix.sizeimage = vf->fmt.pix.bytesperline * usbvision->curheight;
910 vf->fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M;
911 vf->fmt.pix.field = V4L2_FIELD_NONE; /* Always progressive image */
912
913 return 0;
914 }
915
vidioc_try_fmt_vid_cap(struct file * file,void * priv,struct v4l2_format * vf)916 static int vidioc_try_fmt_vid_cap(struct file *file, void *priv,
917 struct v4l2_format *vf)
918 {
919 struct usb_usbvision *usbvision = video_drvdata(file);
920 int format_idx;
921
922 /* Find requested format in available ones */
923 for (format_idx = 0; format_idx < USBVISION_SUPPORTED_PALETTES; format_idx++) {
924 if (vf->fmt.pix.pixelformat ==
925 usbvision_v4l2_format[format_idx].format) {
926 usbvision->palette = usbvision_v4l2_format[format_idx];
927 break;
928 }
929 }
930 /* robustness */
931 if (format_idx == USBVISION_SUPPORTED_PALETTES)
932 return -EINVAL;
933 RESTRICT_TO_RANGE(vf->fmt.pix.width, MIN_FRAME_WIDTH, MAX_FRAME_WIDTH);
934 RESTRICT_TO_RANGE(vf->fmt.pix.height, MIN_FRAME_HEIGHT, MAX_FRAME_HEIGHT);
935
936 vf->fmt.pix.bytesperline = vf->fmt.pix.width*
937 usbvision->palette.bytes_per_pixel;
938 vf->fmt.pix.sizeimage = vf->fmt.pix.bytesperline*vf->fmt.pix.height;
939
940 return 0;
941 }
942
vidioc_s_fmt_vid_cap(struct file * file,void * priv,struct v4l2_format * vf)943 static int vidioc_s_fmt_vid_cap(struct file *file, void *priv,
944 struct v4l2_format *vf)
945 {
946 struct usb_usbvision *usbvision = video_drvdata(file);
947 int ret;
948
949 ret = vidioc_try_fmt_vid_cap(file, priv, vf);
950 if (ret)
951 return ret;
952
953 /* stop io in case it is already in progress */
954 if (usbvision->streaming == stream_on) {
955 ret = usbvision_stream_interrupt(usbvision);
956 if (ret)
957 return ret;
958 }
959 usbvision_frames_free(usbvision);
960 usbvision_empty_framequeues(usbvision);
961
962 usbvision->cur_frame = NULL;
963
964 /* by now we are committed to the new data... */
965 usbvision_set_output(usbvision, vf->fmt.pix.width, vf->fmt.pix.height);
966
967 return 0;
968 }
969
usbvision_read(struct file * file,char __user * buf,size_t count,loff_t * ppos)970 static ssize_t usbvision_read(struct file *file, char __user *buf,
971 size_t count, loff_t *ppos)
972 {
973 struct usb_usbvision *usbvision = video_drvdata(file);
974 int noblock = file->f_flags & O_NONBLOCK;
975 unsigned long lock_flags;
976 int ret, i;
977 struct usbvision_frame *frame;
978
979 PDEBUG(DBG_IO, "%s: %ld bytes, noblock=%d", __func__,
980 (unsigned long)count, noblock);
981
982 if (!USBVISION_IS_OPERATIONAL(usbvision) || (buf == NULL))
983 return -EFAULT;
984
985 /* This entry point is compatible with the mmap routines
986 so that a user can do either VIDIOC_QBUF/VIDIOC_DQBUF
987 to get frames or call read on the device. */
988 if (!usbvision->num_frames) {
989 /* First, allocate some frames to work with
990 if this has not been done with VIDIOC_REQBUF */
991 usbvision_frames_free(usbvision);
992 usbvision_empty_framequeues(usbvision);
993 usbvision_frames_alloc(usbvision, USBVISION_NUMFRAMES);
994 }
995
996 if (usbvision->streaming != stream_on) {
997 /* no stream is running, make it running ! */
998 usbvision->streaming = stream_on;
999 call_all(usbvision, video, s_stream, 1);
1000 }
1001
1002 /* Then, enqueue as many frames as possible
1003 (like a user of VIDIOC_QBUF would do) */
1004 for (i = 0; i < usbvision->num_frames; i++) {
1005 frame = &usbvision->frame[i];
1006 if (frame->grabstate == frame_state_unused) {
1007 /* Mark it as ready and enqueue frame */
1008 frame->grabstate = frame_state_ready;
1009 frame->scanstate = scan_state_scanning;
1010 /* Accumulated in usbvision_parse_data() */
1011 frame->scanlength = 0;
1012
1013 /* set v4l2_format index */
1014 frame->v4l2_format = usbvision->palette;
1015
1016 spin_lock_irqsave(&usbvision->queue_lock, lock_flags);
1017 list_add_tail(&frame->frame, &usbvision->inqueue);
1018 spin_unlock_irqrestore(&usbvision->queue_lock,
1019 lock_flags);
1020 }
1021 }
1022
1023 /* Then try to steal a frame (like a VIDIOC_DQBUF would do) */
1024 if (list_empty(&(usbvision->outqueue))) {
1025 if (noblock)
1026 return -EAGAIN;
1027
1028 ret = wait_event_interruptible
1029 (usbvision->wait_frame,
1030 !list_empty(&(usbvision->outqueue)));
1031 if (ret)
1032 return ret;
1033 }
1034
1035 spin_lock_irqsave(&usbvision->queue_lock, lock_flags);
1036 frame = list_entry(usbvision->outqueue.next,
1037 struct usbvision_frame, frame);
1038 list_del(usbvision->outqueue.next);
1039 spin_unlock_irqrestore(&usbvision->queue_lock, lock_flags);
1040
1041 /* An error returns an empty frame */
1042 if (frame->grabstate == frame_state_error) {
1043 frame->bytes_read = 0;
1044 return 0;
1045 }
1046
1047 PDEBUG(DBG_IO, "%s: frmx=%d, bytes_read=%ld, scanlength=%ld",
1048 __func__,
1049 frame->index, frame->bytes_read, frame->scanlength);
1050
1051 /* copy bytes to user space; we allow for partials reads */
1052 if ((count + frame->bytes_read) > (unsigned long)frame->scanlength)
1053 count = frame->scanlength - frame->bytes_read;
1054
1055 if (copy_to_user(buf, frame->data + frame->bytes_read, count))
1056 return -EFAULT;
1057
1058 frame->bytes_read += count;
1059 PDEBUG(DBG_IO, "%s: {copy} count used=%ld, new bytes_read=%ld",
1060 __func__,
1061 (unsigned long)count, frame->bytes_read);
1062
1063 /* For now, forget the frame if it has not been read in one shot. */
1064 /* if (frame->bytes_read >= frame->scanlength) {*/ /* All data has been read */
1065 frame->bytes_read = 0;
1066
1067 /* Mark it as available to be used again. */
1068 frame->grabstate = frame_state_unused;
1069 /* } */
1070
1071 return count;
1072 }
1073
usbvision_v4l2_read(struct file * file,char __user * buf,size_t count,loff_t * ppos)1074 static ssize_t usbvision_v4l2_read(struct file *file, char __user *buf,
1075 size_t count, loff_t *ppos)
1076 {
1077 struct usb_usbvision *usbvision = video_drvdata(file);
1078 int res;
1079
1080 if (mutex_lock_interruptible(&usbvision->v4l2_lock))
1081 return -ERESTARTSYS;
1082 res = usbvision_read(file, buf, count, ppos);
1083 mutex_unlock(&usbvision->v4l2_lock);
1084 return res;
1085 }
1086
usbvision_mmap(struct file * file,struct vm_area_struct * vma)1087 static int usbvision_mmap(struct file *file, struct vm_area_struct *vma)
1088 {
1089 unsigned long size = vma->vm_end - vma->vm_start,
1090 start = vma->vm_start;
1091 void *pos;
1092 u32 i;
1093 struct usb_usbvision *usbvision = video_drvdata(file);
1094
1095 PDEBUG(DBG_MMAP, "mmap");
1096
1097 if (!USBVISION_IS_OPERATIONAL(usbvision))
1098 return -EFAULT;
1099
1100 if (!(vma->vm_flags & VM_WRITE) ||
1101 size != PAGE_ALIGN(usbvision->max_frame_size)) {
1102 return -EINVAL;
1103 }
1104
1105 for (i = 0; i < usbvision->num_frames; i++) {
1106 if (((PAGE_ALIGN(usbvision->max_frame_size)*i) >> PAGE_SHIFT) ==
1107 vma->vm_pgoff)
1108 break;
1109 }
1110 if (i == usbvision->num_frames) {
1111 PDEBUG(DBG_MMAP,
1112 "mmap: user supplied mapping address is out of range");
1113 return -EINVAL;
1114 }
1115
1116 /* VM_IO is eventually going to replace PageReserved altogether */
1117 vma->vm_flags |= VM_IO | VM_DONTEXPAND | VM_DONTDUMP;
1118
1119 pos = usbvision->frame[i].data;
1120 while (size > 0) {
1121 if (vm_insert_page(vma, start, vmalloc_to_page(pos))) {
1122 PDEBUG(DBG_MMAP, "mmap: vm_insert_page failed");
1123 return -EAGAIN;
1124 }
1125 start += PAGE_SIZE;
1126 pos += PAGE_SIZE;
1127 size -= PAGE_SIZE;
1128 }
1129
1130 return 0;
1131 }
1132
usbvision_v4l2_mmap(struct file * file,struct vm_area_struct * vma)1133 static int usbvision_v4l2_mmap(struct file *file, struct vm_area_struct *vma)
1134 {
1135 struct usb_usbvision *usbvision = video_drvdata(file);
1136 int res;
1137
1138 if (mutex_lock_interruptible(&usbvision->v4l2_lock))
1139 return -ERESTARTSYS;
1140 res = usbvision_mmap(file, vma);
1141 mutex_unlock(&usbvision->v4l2_lock);
1142 return res;
1143 }
1144
1145 /*
1146 * Here comes the stuff for radio on usbvision based devices
1147 *
1148 */
usbvision_radio_open(struct file * file)1149 static int usbvision_radio_open(struct file *file)
1150 {
1151 struct usb_usbvision *usbvision = video_drvdata(file);
1152 int err_code = 0;
1153
1154 PDEBUG(DBG_IO, "%s:", __func__);
1155
1156 if (mutex_lock_interruptible(&usbvision->v4l2_lock))
1157 return -ERESTARTSYS;
1158 if (usbvision->user) {
1159 dev_err(&usbvision->rdev->dev,
1160 "%s: Someone tried to open an already opened USBVision Radio!\n",
1161 __func__);
1162 err_code = -EBUSY;
1163 } else {
1164 if (power_on_at_open) {
1165 usbvision_reset_power_off_timer(usbvision);
1166 if (usbvision->power == 0) {
1167 usbvision_power_on(usbvision);
1168 usbvision_i2c_register(usbvision);
1169 }
1170 }
1171
1172 /* Alternate interface 1 is is the biggest frame size */
1173 err_code = usbvision_set_alternate(usbvision);
1174 if (err_code < 0) {
1175 usbvision->last_error = err_code;
1176 err_code = -EBUSY;
1177 goto out;
1178 }
1179
1180 /* If so far no errors then we shall start the radio */
1181 usbvision->radio = 1;
1182 call_all(usbvision, tuner, s_radio);
1183 usbvision_set_audio(usbvision, USBVISION_AUDIO_RADIO);
1184 usbvision->user++;
1185 }
1186
1187 if (err_code) {
1188 if (power_on_at_open) {
1189 usbvision_i2c_unregister(usbvision);
1190 usbvision_power_off(usbvision);
1191 usbvision->initialized = 0;
1192 }
1193 }
1194 out:
1195 mutex_unlock(&usbvision->v4l2_lock);
1196 return err_code;
1197 }
1198
1199
usbvision_radio_close(struct file * file)1200 static int usbvision_radio_close(struct file *file)
1201 {
1202 struct usb_usbvision *usbvision = video_drvdata(file);
1203 int err_code = 0;
1204
1205 PDEBUG(DBG_IO, "");
1206
1207 mutex_lock(&usbvision->v4l2_lock);
1208 /* Set packet size to 0 */
1209 usbvision->iface_alt = 0;
1210 err_code = usb_set_interface(usbvision->dev, usbvision->iface,
1211 usbvision->iface_alt);
1212
1213 usbvision_audio_off(usbvision);
1214 usbvision->radio = 0;
1215 usbvision->user--;
1216
1217 if (power_on_at_open) {
1218 usbvision_set_power_off_timer(usbvision);
1219 usbvision->initialized = 0;
1220 }
1221
1222 if (usbvision->remove_pending) {
1223 printk(KERN_INFO "%s: Final disconnect\n", __func__);
1224 usbvision_release(usbvision);
1225 return err_code;
1226 }
1227
1228 mutex_unlock(&usbvision->v4l2_lock);
1229 PDEBUG(DBG_IO, "success");
1230 return err_code;
1231 }
1232
1233 /* Video registration stuff */
1234
1235 /* Video template */
1236 static const struct v4l2_file_operations usbvision_fops = {
1237 .owner = THIS_MODULE,
1238 .open = usbvision_v4l2_open,
1239 .release = usbvision_v4l2_close,
1240 .read = usbvision_v4l2_read,
1241 .mmap = usbvision_v4l2_mmap,
1242 .unlocked_ioctl = video_ioctl2,
1243 /* .poll = video_poll, */
1244 };
1245
1246 static const struct v4l2_ioctl_ops usbvision_ioctl_ops = {
1247 .vidioc_querycap = vidioc_querycap,
1248 .vidioc_enum_fmt_vid_cap = vidioc_enum_fmt_vid_cap,
1249 .vidioc_g_fmt_vid_cap = vidioc_g_fmt_vid_cap,
1250 .vidioc_try_fmt_vid_cap = vidioc_try_fmt_vid_cap,
1251 .vidioc_s_fmt_vid_cap = vidioc_s_fmt_vid_cap,
1252 .vidioc_reqbufs = vidioc_reqbufs,
1253 .vidioc_querybuf = vidioc_querybuf,
1254 .vidioc_qbuf = vidioc_qbuf,
1255 .vidioc_dqbuf = vidioc_dqbuf,
1256 .vidioc_s_std = vidioc_s_std,
1257 .vidioc_g_std = vidioc_g_std,
1258 .vidioc_enum_input = vidioc_enum_input,
1259 .vidioc_g_input = vidioc_g_input,
1260 .vidioc_s_input = vidioc_s_input,
1261 .vidioc_queryctrl = vidioc_queryctrl,
1262 .vidioc_g_audio = vidioc_g_audio,
1263 .vidioc_s_audio = vidioc_s_audio,
1264 .vidioc_g_ctrl = vidioc_g_ctrl,
1265 .vidioc_s_ctrl = vidioc_s_ctrl,
1266 .vidioc_streamon = vidioc_streamon,
1267 .vidioc_streamoff = vidioc_streamoff,
1268 .vidioc_g_tuner = vidioc_g_tuner,
1269 .vidioc_s_tuner = vidioc_s_tuner,
1270 .vidioc_g_frequency = vidioc_g_frequency,
1271 .vidioc_s_frequency = vidioc_s_frequency,
1272 #ifdef CONFIG_VIDEO_ADV_DEBUG
1273 .vidioc_g_register = vidioc_g_register,
1274 .vidioc_s_register = vidioc_s_register,
1275 #endif
1276 };
1277
1278 static struct video_device usbvision_video_template = {
1279 .fops = &usbvision_fops,
1280 .ioctl_ops = &usbvision_ioctl_ops,
1281 .name = "usbvision-video",
1282 .release = video_device_release,
1283 .tvnorms = USBVISION_NORMS,
1284 };
1285
1286
1287 /* Radio template */
1288 static const struct v4l2_file_operations usbvision_radio_fops = {
1289 .owner = THIS_MODULE,
1290 .open = usbvision_radio_open,
1291 .release = usbvision_radio_close,
1292 .unlocked_ioctl = video_ioctl2,
1293 };
1294
1295 static const struct v4l2_ioctl_ops usbvision_radio_ioctl_ops = {
1296 .vidioc_querycap = vidioc_querycap,
1297 .vidioc_enum_input = vidioc_enum_input,
1298 .vidioc_g_input = vidioc_g_input,
1299 .vidioc_s_input = vidioc_s_input,
1300 .vidioc_queryctrl = vidioc_queryctrl,
1301 .vidioc_g_audio = vidioc_g_audio,
1302 .vidioc_s_audio = vidioc_s_audio,
1303 .vidioc_g_ctrl = vidioc_g_ctrl,
1304 .vidioc_s_ctrl = vidioc_s_ctrl,
1305 .vidioc_g_tuner = vidioc_g_tuner,
1306 .vidioc_s_tuner = vidioc_s_tuner,
1307 .vidioc_g_frequency = vidioc_g_frequency,
1308 .vidioc_s_frequency = vidioc_s_frequency,
1309 };
1310
1311 static struct video_device usbvision_radio_template = {
1312 .fops = &usbvision_radio_fops,
1313 .name = "usbvision-radio",
1314 .release = video_device_release,
1315 .ioctl_ops = &usbvision_radio_ioctl_ops,
1316 };
1317
1318
usbvision_vdev_init(struct usb_usbvision * usbvision,struct video_device * vdev_template,char * name)1319 static struct video_device *usbvision_vdev_init(struct usb_usbvision *usbvision,
1320 struct video_device *vdev_template,
1321 char *name)
1322 {
1323 struct usb_device *usb_dev = usbvision->dev;
1324 struct video_device *vdev;
1325
1326 if (usb_dev == NULL) {
1327 dev_err(&usbvision->dev->dev,
1328 "%s: usbvision->dev is not set\n", __func__);
1329 return NULL;
1330 }
1331
1332 vdev = video_device_alloc();
1333 if (NULL == vdev)
1334 return NULL;
1335 *vdev = *vdev_template;
1336 vdev->lock = &usbvision->v4l2_lock;
1337 vdev->v4l2_dev = &usbvision->v4l2_dev;
1338 snprintf(vdev->name, sizeof(vdev->name), "%s", name);
1339 video_set_drvdata(vdev, usbvision);
1340 return vdev;
1341 }
1342
1343 /* unregister video4linux devices */
usbvision_unregister_video(struct usb_usbvision * usbvision)1344 static void usbvision_unregister_video(struct usb_usbvision *usbvision)
1345 {
1346 /* Radio Device: */
1347 if (usbvision->rdev) {
1348 PDEBUG(DBG_PROBE, "unregister %s [v4l2]",
1349 video_device_node_name(usbvision->rdev));
1350 if (video_is_registered(usbvision->rdev))
1351 video_unregister_device(usbvision->rdev);
1352 else
1353 video_device_release(usbvision->rdev);
1354 usbvision->rdev = NULL;
1355 }
1356
1357 /* Video Device: */
1358 if (usbvision->vdev) {
1359 PDEBUG(DBG_PROBE, "unregister %s [v4l2]",
1360 video_device_node_name(usbvision->vdev));
1361 if (video_is_registered(usbvision->vdev))
1362 video_unregister_device(usbvision->vdev);
1363 else
1364 video_device_release(usbvision->vdev);
1365 usbvision->vdev = NULL;
1366 }
1367 }
1368
1369 /* register video4linux devices */
usbvision_register_video(struct usb_usbvision * usbvision)1370 static int usbvision_register_video(struct usb_usbvision *usbvision)
1371 {
1372 /* Video Device: */
1373 usbvision->vdev = usbvision_vdev_init(usbvision,
1374 &usbvision_video_template,
1375 "USBVision Video");
1376 if (usbvision->vdev == NULL)
1377 goto err_exit;
1378 if (video_register_device(usbvision->vdev, VFL_TYPE_GRABBER, video_nr) < 0)
1379 goto err_exit;
1380 printk(KERN_INFO "USBVision[%d]: registered USBVision Video device %s [v4l2]\n",
1381 usbvision->nr, video_device_node_name(usbvision->vdev));
1382
1383 /* Radio Device: */
1384 if (usbvision_device_data[usbvision->dev_model].radio) {
1385 /* usbvision has radio */
1386 usbvision->rdev = usbvision_vdev_init(usbvision,
1387 &usbvision_radio_template,
1388 "USBVision Radio");
1389 if (usbvision->rdev == NULL)
1390 goto err_exit;
1391 if (video_register_device(usbvision->rdev, VFL_TYPE_RADIO, radio_nr) < 0)
1392 goto err_exit;
1393 printk(KERN_INFO "USBVision[%d]: registered USBVision Radio device %s [v4l2]\n",
1394 usbvision->nr, video_device_node_name(usbvision->rdev));
1395 }
1396 /* all done */
1397 return 0;
1398
1399 err_exit:
1400 dev_err(&usbvision->dev->dev,
1401 "USBVision[%d]: video_register_device() failed\n",
1402 usbvision->nr);
1403 usbvision_unregister_video(usbvision);
1404 return -1;
1405 }
1406
1407 /*
1408 * usbvision_alloc()
1409 *
1410 * This code allocates the struct usb_usbvision.
1411 * It is filled with default values.
1412 *
1413 * Returns NULL on error, a pointer to usb_usbvision else.
1414 *
1415 */
usbvision_alloc(struct usb_device * dev,struct usb_interface * intf)1416 static struct usb_usbvision *usbvision_alloc(struct usb_device *dev,
1417 struct usb_interface *intf)
1418 {
1419 struct usb_usbvision *usbvision;
1420
1421 usbvision = kzalloc(sizeof(struct usb_usbvision), GFP_KERNEL);
1422 if (usbvision == NULL)
1423 return NULL;
1424
1425 usbvision->dev = dev;
1426 if (v4l2_device_register(&intf->dev, &usbvision->v4l2_dev))
1427 goto err_free;
1428
1429 mutex_init(&usbvision->v4l2_lock);
1430
1431 /* prepare control urb for control messages during interrupts */
1432 usbvision->ctrl_urb = usb_alloc_urb(USBVISION_URB_FRAMES, GFP_KERNEL);
1433 if (usbvision->ctrl_urb == NULL)
1434 goto err_unreg;
1435 init_waitqueue_head(&usbvision->ctrl_urb_wq);
1436
1437 usbvision_init_power_off_timer(usbvision);
1438
1439 return usbvision;
1440
1441 err_unreg:
1442 v4l2_device_unregister(&usbvision->v4l2_dev);
1443 err_free:
1444 kfree(usbvision);
1445 return NULL;
1446 }
1447
1448 /*
1449 * usbvision_release()
1450 *
1451 * This code does final release of struct usb_usbvision. This happens
1452 * after the device is disconnected -and- all clients closed their files.
1453 *
1454 */
usbvision_release(struct usb_usbvision * usbvision)1455 static void usbvision_release(struct usb_usbvision *usbvision)
1456 {
1457 PDEBUG(DBG_PROBE, "");
1458
1459 usbvision_reset_power_off_timer(usbvision);
1460
1461 usbvision->initialized = 0;
1462
1463 usbvision_remove_sysfs(usbvision->vdev);
1464 usbvision_unregister_video(usbvision);
1465 kfree(usbvision->alt_max_pkt_size);
1466
1467 usb_free_urb(usbvision->ctrl_urb);
1468
1469 v4l2_device_unregister(&usbvision->v4l2_dev);
1470 kfree(usbvision);
1471
1472 PDEBUG(DBG_PROBE, "success");
1473 }
1474
1475
1476 /*********************** usb interface **********************************/
1477
usbvision_configure_video(struct usb_usbvision * usbvision)1478 static void usbvision_configure_video(struct usb_usbvision *usbvision)
1479 {
1480 int model;
1481
1482 if (usbvision == NULL)
1483 return;
1484
1485 model = usbvision->dev_model;
1486 usbvision->palette = usbvision_v4l2_format[2]; /* V4L2_PIX_FMT_RGB24; */
1487
1488 if (usbvision_device_data[usbvision->dev_model].vin_reg2_override) {
1489 usbvision->vin_reg2_preset =
1490 usbvision_device_data[usbvision->dev_model].vin_reg2;
1491 } else {
1492 usbvision->vin_reg2_preset = 0;
1493 }
1494
1495 usbvision->tvnorm_id = usbvision_device_data[model].video_norm;
1496
1497 usbvision->video_inputs = usbvision_device_data[model].video_channels;
1498 usbvision->ctl_input = 0;
1499
1500 /* This should be here to make i2c clients to be able to register */
1501 /* first switch off audio */
1502 if (usbvision_device_data[model].audio_channels > 0)
1503 usbvision_audio_off(usbvision);
1504 if (!power_on_at_open) {
1505 /* and then power up the noisy tuner */
1506 usbvision_power_on(usbvision);
1507 usbvision_i2c_register(usbvision);
1508 }
1509 }
1510
1511 /*
1512 * usbvision_probe()
1513 *
1514 * This procedure queries device descriptor and accepts the interface
1515 * if it looks like USBVISION video device
1516 *
1517 */
usbvision_probe(struct usb_interface * intf,const struct usb_device_id * devid)1518 static int usbvision_probe(struct usb_interface *intf,
1519 const struct usb_device_id *devid)
1520 {
1521 struct usb_device *dev = usb_get_dev(interface_to_usbdev(intf));
1522 struct usb_interface *uif;
1523 __u8 ifnum = intf->altsetting->desc.bInterfaceNumber;
1524 const struct usb_host_interface *interface;
1525 struct usb_usbvision *usbvision = NULL;
1526 const struct usb_endpoint_descriptor *endpoint;
1527 int model, i;
1528
1529 PDEBUG(DBG_PROBE, "VID=%#04x, PID=%#04x, ifnum=%u",
1530 dev->descriptor.idVendor,
1531 dev->descriptor.idProduct, ifnum);
1532
1533 model = devid->driver_info;
1534 if (model < 0 || model >= usbvision_device_data_size) {
1535 PDEBUG(DBG_PROBE, "model out of bounds %d", model);
1536 return -ENODEV;
1537 }
1538 printk(KERN_INFO "%s: %s found\n", __func__,
1539 usbvision_device_data[model].model_string);
1540
1541 if (usbvision_device_data[model].interface >= 0)
1542 interface = &dev->actconfig->interface[usbvision_device_data[model].interface]->altsetting[0];
1543 else
1544 interface = &dev->actconfig->interface[ifnum]->altsetting[0];
1545 endpoint = &interface->endpoint[1].desc;
1546 if (!usb_endpoint_xfer_isoc(endpoint)) {
1547 dev_err(&intf->dev, "%s: interface %d. has non-ISO endpoint!\n",
1548 __func__, ifnum);
1549 dev_err(&intf->dev, "%s: Endpoint attributes %d",
1550 __func__, endpoint->bmAttributes);
1551 return -ENODEV;
1552 }
1553 if (usb_endpoint_dir_out(endpoint)) {
1554 dev_err(&intf->dev, "%s: interface %d. has ISO OUT endpoint!\n",
1555 __func__, ifnum);
1556 return -ENODEV;
1557 }
1558
1559 usbvision = usbvision_alloc(dev, intf);
1560 if (usbvision == NULL) {
1561 dev_err(&intf->dev, "%s: couldn't allocate USBVision struct\n", __func__);
1562 return -ENOMEM;
1563 }
1564
1565 if (dev->descriptor.bNumConfigurations > 1)
1566 usbvision->bridge_type = BRIDGE_NT1004;
1567 else if (model == DAZZLE_DVC_90_REV_1_SECAM)
1568 usbvision->bridge_type = BRIDGE_NT1005;
1569 else
1570 usbvision->bridge_type = BRIDGE_NT1003;
1571 PDEBUG(DBG_PROBE, "bridge_type %d", usbvision->bridge_type);
1572
1573 /* compute alternate max packet sizes */
1574 uif = dev->actconfig->interface[0];
1575
1576 usbvision->num_alt = uif->num_altsetting;
1577 PDEBUG(DBG_PROBE, "Alternate settings: %i", usbvision->num_alt);
1578 usbvision->alt_max_pkt_size = kmalloc(32 * usbvision->num_alt, GFP_KERNEL);
1579 if (usbvision->alt_max_pkt_size == NULL) {
1580 dev_err(&intf->dev, "usbvision: out of memory!\n");
1581 usbvision_release(usbvision);
1582 return -ENOMEM;
1583 }
1584
1585 for (i = 0; i < usbvision->num_alt; i++) {
1586 u16 tmp;
1587
1588 if (uif->altsetting[i].desc.bNumEndpoints < 2) {
1589 usbvision_release(usbvision);
1590 return -ENODEV;
1591 }
1592
1593 tmp = le16_to_cpu(uif->altsetting[i].endpoint[1].desc.
1594 wMaxPacketSize);
1595 usbvision->alt_max_pkt_size[i] =
1596 (tmp & 0x07ff) * (((tmp & 0x1800) >> 11) + 1);
1597 PDEBUG(DBG_PROBE, "Alternate setting %i, max size= %i", i,
1598 usbvision->alt_max_pkt_size[i]);
1599 }
1600
1601
1602 usbvision->nr = usbvision_nr++;
1603
1604 usbvision->have_tuner = usbvision_device_data[model].tuner;
1605 if (usbvision->have_tuner)
1606 usbvision->tuner_type = usbvision_device_data[model].tuner_type;
1607
1608 usbvision->dev_model = model;
1609 usbvision->remove_pending = 0;
1610 usbvision->iface = ifnum;
1611 usbvision->iface_alt = 0;
1612 usbvision->video_endp = endpoint->bEndpointAddress;
1613 usbvision->isoc_packet_size = 0;
1614 usbvision->usb_bandwidth = 0;
1615 usbvision->user = 0;
1616 usbvision->streaming = stream_off;
1617 usbvision_configure_video(usbvision);
1618 usbvision_register_video(usbvision);
1619
1620 usbvision_create_sysfs(usbvision->vdev);
1621
1622 PDEBUG(DBG_PROBE, "success");
1623 return 0;
1624 }
1625
1626
1627 /*
1628 * usbvision_disconnect()
1629 *
1630 * This procedure stops all driver activity, deallocates interface-private
1631 * structure (pointed by 'ptr') and after that driver should be removable
1632 * with no ill consequences.
1633 *
1634 */
usbvision_disconnect(struct usb_interface * intf)1635 static void usbvision_disconnect(struct usb_interface *intf)
1636 {
1637 struct usb_usbvision *usbvision = to_usbvision(usb_get_intfdata(intf));
1638
1639 PDEBUG(DBG_PROBE, "");
1640
1641 if (usbvision == NULL) {
1642 pr_err("%s: usb_get_intfdata() failed\n", __func__);
1643 return;
1644 }
1645
1646 mutex_lock(&usbvision->v4l2_lock);
1647
1648 /* At this time we ask to cancel outstanding URBs */
1649 usbvision_stop_isoc(usbvision);
1650
1651 v4l2_device_disconnect(&usbvision->v4l2_dev);
1652
1653 if (usbvision->power) {
1654 usbvision_i2c_unregister(usbvision);
1655 usbvision_power_off(usbvision);
1656 }
1657 usbvision->remove_pending = 1; /* Now all ISO data will be ignored */
1658
1659 usb_put_dev(usbvision->dev);
1660 usbvision->dev = NULL; /* USB device is no more */
1661
1662 mutex_unlock(&usbvision->v4l2_lock);
1663
1664 if (usbvision->user) {
1665 printk(KERN_INFO "%s: In use, disconnect pending\n",
1666 __func__);
1667 wake_up_interruptible(&usbvision->wait_frame);
1668 wake_up_interruptible(&usbvision->wait_stream);
1669 } else {
1670 usbvision_release(usbvision);
1671 }
1672
1673 PDEBUG(DBG_PROBE, "success");
1674 }
1675
1676 static struct usb_driver usbvision_driver = {
1677 .name = "usbvision",
1678 .id_table = usbvision_table,
1679 .probe = usbvision_probe,
1680 .disconnect = usbvision_disconnect,
1681 };
1682
1683 /*
1684 * usbvision_init()
1685 *
1686 * This code is run to initialize the driver.
1687 *
1688 */
usbvision_init(void)1689 static int __init usbvision_init(void)
1690 {
1691 int err_code;
1692
1693 PDEBUG(DBG_PROBE, "");
1694
1695 PDEBUG(DBG_IO, "IO debugging is enabled [video]");
1696 PDEBUG(DBG_PROBE, "PROBE debugging is enabled [video]");
1697 PDEBUG(DBG_MMAP, "MMAP debugging is enabled [video]");
1698
1699 /* disable planar mode support unless compression enabled */
1700 if (isoc_mode != ISOC_MODE_COMPRESS) {
1701 /* FIXME : not the right way to set supported flag */
1702 usbvision_v4l2_format[6].supported = 0; /* V4L2_PIX_FMT_YVU420 */
1703 usbvision_v4l2_format[7].supported = 0; /* V4L2_PIX_FMT_YUV422P */
1704 }
1705
1706 err_code = usb_register(&usbvision_driver);
1707
1708 if (err_code == 0) {
1709 printk(KERN_INFO DRIVER_DESC " : " USBVISION_VERSION_STRING "\n");
1710 PDEBUG(DBG_PROBE, "success");
1711 }
1712 return err_code;
1713 }
1714
usbvision_exit(void)1715 static void __exit usbvision_exit(void)
1716 {
1717 PDEBUG(DBG_PROBE, "");
1718
1719 usb_deregister(&usbvision_driver);
1720 PDEBUG(DBG_PROBE, "success");
1721 }
1722
1723 module_init(usbvision_init);
1724 module_exit(usbvision_exit);
1725
1726 /*
1727 * Overrides for Emacs so that we follow Linus's tabbing style.
1728 * ---------------------------------------------------------------------------
1729 * Local variables:
1730 * c-basic-offset: 8
1731 * End:
1732 */
1733