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
439 if (power_on_at_open) {
440 /* power off in a little while
441 to avoid off/on every close/open short sequences */
442 usbvision_set_power_off_timer(usbvision);
443 usbvision->initialized = 0;
444 }
445
446 if (usbvision->remove_pending) {
447 printk(KERN_INFO "%s: Final disconnect\n", __func__);
448 usbvision_release(usbvision);
449 return 0;
450 }
451 mutex_unlock(&usbvision->v4l2_lock);
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->device_caps = 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 vc->capabilities = vc->device_caps | V4L2_CAP_DEVICE_CAPS;
518 return 0;
519 }
520
vidioc_enum_input(struct file * file,void * priv,struct v4l2_input * vi)521 static int vidioc_enum_input(struct file *file, void *priv,
522 struct v4l2_input *vi)
523 {
524 struct usb_usbvision *usbvision = video_drvdata(file);
525 int chan;
526
527 if (vi->index >= usbvision->video_inputs)
528 return -EINVAL;
529 if (usbvision->have_tuner)
530 chan = vi->index;
531 else
532 chan = vi->index + 1; /* skip Television string*/
533
534 /* Determine the requested input characteristics
535 specific for each usbvision card model */
536 switch (chan) {
537 case 0:
538 if (usbvision_device_data[usbvision->dev_model].video_channels == 4) {
539 strcpy(vi->name, "White Video Input");
540 } else {
541 strcpy(vi->name, "Television");
542 vi->type = V4L2_INPUT_TYPE_TUNER;
543 vi->audioset = 1;
544 vi->tuner = chan;
545 vi->std = USBVISION_NORMS;
546 }
547 break;
548 case 1:
549 vi->type = V4L2_INPUT_TYPE_CAMERA;
550 if (usbvision_device_data[usbvision->dev_model].video_channels == 4)
551 strcpy(vi->name, "Green Video Input");
552 else
553 strcpy(vi->name, "Composite Video Input");
554 vi->std = V4L2_STD_PAL;
555 break;
556 case 2:
557 vi->type = V4L2_INPUT_TYPE_CAMERA;
558 if (usbvision_device_data[usbvision->dev_model].video_channels == 4)
559 strcpy(vi->name, "Yellow Video Input");
560 else
561 strcpy(vi->name, "S-Video Input");
562 vi->std = V4L2_STD_PAL;
563 break;
564 case 3:
565 vi->type = V4L2_INPUT_TYPE_CAMERA;
566 strcpy(vi->name, "Red Video Input");
567 vi->std = V4L2_STD_PAL;
568 break;
569 }
570 return 0;
571 }
572
vidioc_g_input(struct file * file,void * priv,unsigned int * input)573 static int vidioc_g_input(struct file *file, void *priv, unsigned int *input)
574 {
575 struct usb_usbvision *usbvision = video_drvdata(file);
576
577 *input = usbvision->ctl_input;
578 return 0;
579 }
580
vidioc_s_input(struct file * file,void * priv,unsigned int input)581 static int vidioc_s_input(struct file *file, void *priv, unsigned int input)
582 {
583 struct usb_usbvision *usbvision = video_drvdata(file);
584
585 if (input >= usbvision->video_inputs)
586 return -EINVAL;
587
588 usbvision_muxsel(usbvision, input);
589 usbvision_set_input(usbvision);
590 usbvision_set_output(usbvision,
591 usbvision->curwidth,
592 usbvision->curheight);
593 return 0;
594 }
595
vidioc_s_std(struct file * file,void * priv,v4l2_std_id id)596 static int vidioc_s_std(struct file *file, void *priv, v4l2_std_id id)
597 {
598 struct usb_usbvision *usbvision = video_drvdata(file);
599
600 usbvision->tvnorm_id = id;
601
602 call_all(usbvision, video, s_std, usbvision->tvnorm_id);
603 /* propagate the change to the decoder */
604 usbvision_muxsel(usbvision, usbvision->ctl_input);
605
606 return 0;
607 }
608
vidioc_g_std(struct file * file,void * priv,v4l2_std_id * id)609 static int vidioc_g_std(struct file *file, void *priv, v4l2_std_id *id)
610 {
611 struct usb_usbvision *usbvision = video_drvdata(file);
612
613 *id = usbvision->tvnorm_id;
614 return 0;
615 }
616
vidioc_g_tuner(struct file * file,void * priv,struct v4l2_tuner * vt)617 static int vidioc_g_tuner(struct file *file, void *priv,
618 struct v4l2_tuner *vt)
619 {
620 struct usb_usbvision *usbvision = video_drvdata(file);
621
622 if (!usbvision->have_tuner || vt->index) /* Only tuner 0 */
623 return -EINVAL;
624 if (usbvision->radio) {
625 strcpy(vt->name, "Radio");
626 vt->type = V4L2_TUNER_RADIO;
627 } else {
628 strcpy(vt->name, "Television");
629 }
630 /* Let clients fill in the remainder of this struct */
631 call_all(usbvision, tuner, g_tuner, vt);
632
633 return 0;
634 }
635
vidioc_s_tuner(struct file * file,void * priv,const struct v4l2_tuner * vt)636 static int vidioc_s_tuner(struct file *file, void *priv,
637 const struct v4l2_tuner *vt)
638 {
639 struct usb_usbvision *usbvision = video_drvdata(file);
640
641 /* Only no or one tuner for now */
642 if (!usbvision->have_tuner || vt->index)
643 return -EINVAL;
644 /* let clients handle this */
645 call_all(usbvision, tuner, s_tuner, vt);
646
647 return 0;
648 }
649
vidioc_g_frequency(struct file * file,void * priv,struct v4l2_frequency * freq)650 static int vidioc_g_frequency(struct file *file, void *priv,
651 struct v4l2_frequency *freq)
652 {
653 struct usb_usbvision *usbvision = video_drvdata(file);
654
655 freq->tuner = 0; /* Only one tuner */
656 if (usbvision->radio)
657 freq->type = V4L2_TUNER_RADIO;
658 else
659 freq->type = V4L2_TUNER_ANALOG_TV;
660 freq->frequency = usbvision->freq;
661
662 return 0;
663 }
664
vidioc_s_frequency(struct file * file,void * priv,const struct v4l2_frequency * freq)665 static int vidioc_s_frequency(struct file *file, void *priv,
666 const struct v4l2_frequency *freq)
667 {
668 struct usb_usbvision *usbvision = video_drvdata(file);
669
670 /* Only no or one tuner for now */
671 if (!usbvision->have_tuner || freq->tuner)
672 return -EINVAL;
673
674 usbvision->freq = freq->frequency;
675 call_all(usbvision, tuner, s_frequency, freq);
676
677 return 0;
678 }
679
vidioc_g_audio(struct file * file,void * priv,struct v4l2_audio * a)680 static int vidioc_g_audio(struct file *file, void *priv, struct v4l2_audio *a)
681 {
682 struct usb_usbvision *usbvision = video_drvdata(file);
683
684 if (usbvision->radio)
685 strcpy(a->name, "Radio");
686 else
687 strcpy(a->name, "TV");
688
689 return 0;
690 }
691
vidioc_s_audio(struct file * file,void * fh,const struct v4l2_audio * a)692 static int vidioc_s_audio(struct file *file, void *fh,
693 const struct v4l2_audio *a)
694 {
695 if (a->index)
696 return -EINVAL;
697 return 0;
698 }
699
vidioc_queryctrl(struct file * file,void * priv,struct v4l2_queryctrl * ctrl)700 static int vidioc_queryctrl(struct file *file, void *priv,
701 struct v4l2_queryctrl *ctrl)
702 {
703 struct usb_usbvision *usbvision = video_drvdata(file);
704
705 call_all(usbvision, core, queryctrl, ctrl);
706
707 if (!ctrl->type)
708 return -EINVAL;
709
710 return 0;
711 }
712
vidioc_g_ctrl(struct file * file,void * priv,struct v4l2_control * ctrl)713 static int vidioc_g_ctrl(struct file *file, void *priv,
714 struct v4l2_control *ctrl)
715 {
716 struct usb_usbvision *usbvision = video_drvdata(file);
717
718 call_all(usbvision, core, g_ctrl, ctrl);
719 return 0;
720 }
721
vidioc_s_ctrl(struct file * file,void * priv,struct v4l2_control * ctrl)722 static int vidioc_s_ctrl(struct file *file, void *priv,
723 struct v4l2_control *ctrl)
724 {
725 struct usb_usbvision *usbvision = video_drvdata(file);
726
727 call_all(usbvision, core, s_ctrl, ctrl);
728 return 0;
729 }
730
vidioc_reqbufs(struct file * file,void * priv,struct v4l2_requestbuffers * vr)731 static int vidioc_reqbufs(struct file *file,
732 void *priv, struct v4l2_requestbuffers *vr)
733 {
734 struct usb_usbvision *usbvision = video_drvdata(file);
735 int ret;
736
737 RESTRICT_TO_RANGE(vr->count, 1, USBVISION_NUMFRAMES);
738
739 /* Check input validity:
740 the user must do a VIDEO CAPTURE and MMAP method. */
741 if (vr->memory != V4L2_MEMORY_MMAP)
742 return -EINVAL;
743
744 if (usbvision->streaming == stream_on) {
745 ret = usbvision_stream_interrupt(usbvision);
746 if (ret)
747 return ret;
748 }
749
750 usbvision_frames_free(usbvision);
751 usbvision_empty_framequeues(usbvision);
752 vr->count = usbvision_frames_alloc(usbvision, vr->count);
753
754 usbvision->cur_frame = NULL;
755
756 return 0;
757 }
758
vidioc_querybuf(struct file * file,void * priv,struct v4l2_buffer * vb)759 static int vidioc_querybuf(struct file *file,
760 void *priv, struct v4l2_buffer *vb)
761 {
762 struct usb_usbvision *usbvision = video_drvdata(file);
763 struct usbvision_frame *frame;
764
765 /* FIXME : must control
766 that buffers are mapped (VIDIOC_REQBUFS has been called) */
767 if (vb->index >= usbvision->num_frames)
768 return -EINVAL;
769 /* Updating the corresponding frame state */
770 vb->flags = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC;
771 frame = &usbvision->frame[vb->index];
772 if (frame->grabstate >= frame_state_ready)
773 vb->flags |= V4L2_BUF_FLAG_QUEUED;
774 if (frame->grabstate >= frame_state_done)
775 vb->flags |= V4L2_BUF_FLAG_DONE;
776 if (frame->grabstate == frame_state_unused)
777 vb->flags |= V4L2_BUF_FLAG_MAPPED;
778 vb->memory = V4L2_MEMORY_MMAP;
779
780 vb->m.offset = vb->index * PAGE_ALIGN(usbvision->max_frame_size);
781
782 vb->memory = V4L2_MEMORY_MMAP;
783 vb->field = V4L2_FIELD_NONE;
784 vb->length = usbvision->curwidth *
785 usbvision->curheight *
786 usbvision->palette.bytes_per_pixel;
787 vb->timestamp = usbvision->frame[vb->index].timestamp;
788 vb->sequence = usbvision->frame[vb->index].sequence;
789 return 0;
790 }
791
vidioc_qbuf(struct file * file,void * priv,struct v4l2_buffer * vb)792 static int vidioc_qbuf(struct file *file, void *priv, struct v4l2_buffer *vb)
793 {
794 struct usb_usbvision *usbvision = video_drvdata(file);
795 struct usbvision_frame *frame;
796 unsigned long lock_flags;
797
798 /* FIXME : works only on VIDEO_CAPTURE MODE, MMAP. */
799 if (vb->index >= usbvision->num_frames)
800 return -EINVAL;
801
802 frame = &usbvision->frame[vb->index];
803
804 if (frame->grabstate != frame_state_unused)
805 return -EAGAIN;
806
807 /* Mark it as ready and enqueue frame */
808 frame->grabstate = frame_state_ready;
809 frame->scanstate = scan_state_scanning;
810 frame->scanlength = 0; /* Accumulated in usbvision_parse_data() */
811
812 vb->flags &= ~V4L2_BUF_FLAG_DONE;
813
814 /* set v4l2_format index */
815 frame->v4l2_format = usbvision->palette;
816
817 spin_lock_irqsave(&usbvision->queue_lock, lock_flags);
818 list_add_tail(&usbvision->frame[vb->index].frame, &usbvision->inqueue);
819 spin_unlock_irqrestore(&usbvision->queue_lock, lock_flags);
820
821 return 0;
822 }
823
vidioc_dqbuf(struct file * file,void * priv,struct v4l2_buffer * vb)824 static int vidioc_dqbuf(struct file *file, void *priv, struct v4l2_buffer *vb)
825 {
826 struct usb_usbvision *usbvision = video_drvdata(file);
827 int ret;
828 struct usbvision_frame *f;
829 unsigned long lock_flags;
830
831 if (list_empty(&(usbvision->outqueue))) {
832 if (usbvision->streaming == stream_idle)
833 return -EINVAL;
834 ret = wait_event_interruptible
835 (usbvision->wait_frame,
836 !list_empty(&(usbvision->outqueue)));
837 if (ret)
838 return ret;
839 }
840
841 spin_lock_irqsave(&usbvision->queue_lock, lock_flags);
842 f = list_entry(usbvision->outqueue.next,
843 struct usbvision_frame, frame);
844 list_del(usbvision->outqueue.next);
845 spin_unlock_irqrestore(&usbvision->queue_lock, lock_flags);
846
847 f->grabstate = frame_state_unused;
848
849 vb->memory = V4L2_MEMORY_MMAP;
850 vb->flags = V4L2_BUF_FLAG_MAPPED |
851 V4L2_BUF_FLAG_QUEUED |
852 V4L2_BUF_FLAG_DONE |
853 V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC;
854 vb->index = f->index;
855 vb->sequence = f->sequence;
856 vb->timestamp = f->timestamp;
857 vb->field = V4L2_FIELD_NONE;
858 vb->bytesused = f->scanlength;
859
860 return 0;
861 }
862
vidioc_streamon(struct file * file,void * priv,enum v4l2_buf_type i)863 static int vidioc_streamon(struct file *file, void *priv, enum v4l2_buf_type i)
864 {
865 struct usb_usbvision *usbvision = video_drvdata(file);
866
867 usbvision->streaming = stream_on;
868 call_all(usbvision, video, s_stream, 1);
869
870 return 0;
871 }
872
vidioc_streamoff(struct file * file,void * priv,enum v4l2_buf_type type)873 static int vidioc_streamoff(struct file *file,
874 void *priv, enum v4l2_buf_type type)
875 {
876 struct usb_usbvision *usbvision = video_drvdata(file);
877
878 if (type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
879 return -EINVAL;
880
881 if (usbvision->streaming == stream_on) {
882 usbvision_stream_interrupt(usbvision);
883 /* Stop all video streamings */
884 call_all(usbvision, video, s_stream, 0);
885 }
886 usbvision_empty_framequeues(usbvision);
887
888 return 0;
889 }
890
vidioc_enum_fmt_vid_cap(struct file * file,void * priv,struct v4l2_fmtdesc * vfd)891 static int vidioc_enum_fmt_vid_cap(struct file *file, void *priv,
892 struct v4l2_fmtdesc *vfd)
893 {
894 if (vfd->index >= USBVISION_SUPPORTED_PALETTES - 1)
895 return -EINVAL;
896 strcpy(vfd->description, usbvision_v4l2_format[vfd->index].desc);
897 vfd->pixelformat = usbvision_v4l2_format[vfd->index].format;
898 return 0;
899 }
900
vidioc_g_fmt_vid_cap(struct file * file,void * priv,struct v4l2_format * vf)901 static int vidioc_g_fmt_vid_cap(struct file *file, void *priv,
902 struct v4l2_format *vf)
903 {
904 struct usb_usbvision *usbvision = video_drvdata(file);
905 vf->fmt.pix.width = usbvision->curwidth;
906 vf->fmt.pix.height = usbvision->curheight;
907 vf->fmt.pix.pixelformat = usbvision->palette.format;
908 vf->fmt.pix.bytesperline =
909 usbvision->curwidth * usbvision->palette.bytes_per_pixel;
910 vf->fmt.pix.sizeimage = vf->fmt.pix.bytesperline * usbvision->curheight;
911 vf->fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M;
912 vf->fmt.pix.field = V4L2_FIELD_NONE; /* Always progressive image */
913
914 return 0;
915 }
916
vidioc_try_fmt_vid_cap(struct file * file,void * priv,struct v4l2_format * vf)917 static int vidioc_try_fmt_vid_cap(struct file *file, void *priv,
918 struct v4l2_format *vf)
919 {
920 struct usb_usbvision *usbvision = video_drvdata(file);
921 int format_idx;
922
923 /* Find requested format in available ones */
924 for (format_idx = 0; format_idx < USBVISION_SUPPORTED_PALETTES; format_idx++) {
925 if (vf->fmt.pix.pixelformat ==
926 usbvision_v4l2_format[format_idx].format) {
927 usbvision->palette = usbvision_v4l2_format[format_idx];
928 break;
929 }
930 }
931 /* robustness */
932 if (format_idx == USBVISION_SUPPORTED_PALETTES)
933 return -EINVAL;
934 RESTRICT_TO_RANGE(vf->fmt.pix.width, MIN_FRAME_WIDTH, MAX_FRAME_WIDTH);
935 RESTRICT_TO_RANGE(vf->fmt.pix.height, MIN_FRAME_HEIGHT, MAX_FRAME_HEIGHT);
936
937 vf->fmt.pix.bytesperline = vf->fmt.pix.width*
938 usbvision->palette.bytes_per_pixel;
939 vf->fmt.pix.sizeimage = vf->fmt.pix.bytesperline*vf->fmt.pix.height;
940
941 return 0;
942 }
943
vidioc_s_fmt_vid_cap(struct file * file,void * priv,struct v4l2_format * vf)944 static int vidioc_s_fmt_vid_cap(struct file *file, void *priv,
945 struct v4l2_format *vf)
946 {
947 struct usb_usbvision *usbvision = video_drvdata(file);
948 int ret;
949
950 ret = vidioc_try_fmt_vid_cap(file, priv, vf);
951 if (ret)
952 return ret;
953
954 /* stop io in case it is already in progress */
955 if (usbvision->streaming == stream_on) {
956 ret = usbvision_stream_interrupt(usbvision);
957 if (ret)
958 return ret;
959 }
960 usbvision_frames_free(usbvision);
961 usbvision_empty_framequeues(usbvision);
962
963 usbvision->cur_frame = NULL;
964
965 /* by now we are committed to the new data... */
966 usbvision_set_output(usbvision, vf->fmt.pix.width, vf->fmt.pix.height);
967
968 return 0;
969 }
970
usbvision_read(struct file * file,char __user * buf,size_t count,loff_t * ppos)971 static ssize_t usbvision_read(struct file *file, char __user *buf,
972 size_t count, loff_t *ppos)
973 {
974 struct usb_usbvision *usbvision = video_drvdata(file);
975 int noblock = file->f_flags & O_NONBLOCK;
976 unsigned long lock_flags;
977 int ret, i;
978 struct usbvision_frame *frame;
979
980 PDEBUG(DBG_IO, "%s: %ld bytes, noblock=%d", __func__,
981 (unsigned long)count, noblock);
982
983 if (!USBVISION_IS_OPERATIONAL(usbvision) || (buf == NULL))
984 return -EFAULT;
985
986 /* This entry point is compatible with the mmap routines
987 so that a user can do either VIDIOC_QBUF/VIDIOC_DQBUF
988 to get frames or call read on the device. */
989 if (!usbvision->num_frames) {
990 /* First, allocate some frames to work with
991 if this has not been done with VIDIOC_REQBUF */
992 usbvision_frames_free(usbvision);
993 usbvision_empty_framequeues(usbvision);
994 usbvision_frames_alloc(usbvision, USBVISION_NUMFRAMES);
995 }
996
997 if (usbvision->streaming != stream_on) {
998 /* no stream is running, make it running ! */
999 usbvision->streaming = stream_on;
1000 call_all(usbvision, video, s_stream, 1);
1001 }
1002
1003 /* Then, enqueue as many frames as possible
1004 (like a user of VIDIOC_QBUF would do) */
1005 for (i = 0; i < usbvision->num_frames; i++) {
1006 frame = &usbvision->frame[i];
1007 if (frame->grabstate == frame_state_unused) {
1008 /* Mark it as ready and enqueue frame */
1009 frame->grabstate = frame_state_ready;
1010 frame->scanstate = scan_state_scanning;
1011 /* Accumulated in usbvision_parse_data() */
1012 frame->scanlength = 0;
1013
1014 /* set v4l2_format index */
1015 frame->v4l2_format = usbvision->palette;
1016
1017 spin_lock_irqsave(&usbvision->queue_lock, lock_flags);
1018 list_add_tail(&frame->frame, &usbvision->inqueue);
1019 spin_unlock_irqrestore(&usbvision->queue_lock,
1020 lock_flags);
1021 }
1022 }
1023
1024 /* Then try to steal a frame (like a VIDIOC_DQBUF would do) */
1025 if (list_empty(&(usbvision->outqueue))) {
1026 if (noblock)
1027 return -EAGAIN;
1028
1029 ret = wait_event_interruptible
1030 (usbvision->wait_frame,
1031 !list_empty(&(usbvision->outqueue)));
1032 if (ret)
1033 return ret;
1034 }
1035
1036 spin_lock_irqsave(&usbvision->queue_lock, lock_flags);
1037 frame = list_entry(usbvision->outqueue.next,
1038 struct usbvision_frame, frame);
1039 list_del(usbvision->outqueue.next);
1040 spin_unlock_irqrestore(&usbvision->queue_lock, lock_flags);
1041
1042 /* An error returns an empty frame */
1043 if (frame->grabstate == frame_state_error) {
1044 frame->bytes_read = 0;
1045 return 0;
1046 }
1047
1048 PDEBUG(DBG_IO, "%s: frmx=%d, bytes_read=%ld, scanlength=%ld",
1049 __func__,
1050 frame->index, frame->bytes_read, frame->scanlength);
1051
1052 /* copy bytes to user space; we allow for partials reads */
1053 if ((count + frame->bytes_read) > (unsigned long)frame->scanlength)
1054 count = frame->scanlength - frame->bytes_read;
1055
1056 if (copy_to_user(buf, frame->data + frame->bytes_read, count))
1057 return -EFAULT;
1058
1059 frame->bytes_read += count;
1060 PDEBUG(DBG_IO, "%s: {copy} count used=%ld, new bytes_read=%ld",
1061 __func__,
1062 (unsigned long)count, frame->bytes_read);
1063
1064 /* For now, forget the frame if it has not been read in one shot. */
1065 /* if (frame->bytes_read >= frame->scanlength) {*/ /* All data has been read */
1066 frame->bytes_read = 0;
1067
1068 /* Mark it as available to be used again. */
1069 frame->grabstate = frame_state_unused;
1070 /* } */
1071
1072 return count;
1073 }
1074
usbvision_v4l2_read(struct file * file,char __user * buf,size_t count,loff_t * ppos)1075 static ssize_t usbvision_v4l2_read(struct file *file, char __user *buf,
1076 size_t count, loff_t *ppos)
1077 {
1078 struct usb_usbvision *usbvision = video_drvdata(file);
1079 int res;
1080
1081 if (mutex_lock_interruptible(&usbvision->v4l2_lock))
1082 return -ERESTARTSYS;
1083 res = usbvision_read(file, buf, count, ppos);
1084 mutex_unlock(&usbvision->v4l2_lock);
1085 return res;
1086 }
1087
usbvision_mmap(struct file * file,struct vm_area_struct * vma)1088 static int usbvision_mmap(struct file *file, struct vm_area_struct *vma)
1089 {
1090 unsigned long size = vma->vm_end - vma->vm_start,
1091 start = vma->vm_start;
1092 void *pos;
1093 u32 i;
1094 struct usb_usbvision *usbvision = video_drvdata(file);
1095
1096 PDEBUG(DBG_MMAP, "mmap");
1097
1098 if (!USBVISION_IS_OPERATIONAL(usbvision))
1099 return -EFAULT;
1100
1101 if (!(vma->vm_flags & VM_WRITE) ||
1102 size != PAGE_ALIGN(usbvision->max_frame_size)) {
1103 return -EINVAL;
1104 }
1105
1106 for (i = 0; i < usbvision->num_frames; i++) {
1107 if (((PAGE_ALIGN(usbvision->max_frame_size)*i) >> PAGE_SHIFT) ==
1108 vma->vm_pgoff)
1109 break;
1110 }
1111 if (i == usbvision->num_frames) {
1112 PDEBUG(DBG_MMAP,
1113 "mmap: user supplied mapping address is out of range");
1114 return -EINVAL;
1115 }
1116
1117 /* VM_IO is eventually going to replace PageReserved altogether */
1118 vma->vm_flags |= VM_IO | VM_DONTEXPAND | VM_DONTDUMP;
1119
1120 pos = usbvision->frame[i].data;
1121 while (size > 0) {
1122 if (vm_insert_page(vma, start, vmalloc_to_page(pos))) {
1123 PDEBUG(DBG_MMAP, "mmap: vm_insert_page failed");
1124 return -EAGAIN;
1125 }
1126 start += PAGE_SIZE;
1127 pos += PAGE_SIZE;
1128 size -= PAGE_SIZE;
1129 }
1130
1131 return 0;
1132 }
1133
usbvision_v4l2_mmap(struct file * file,struct vm_area_struct * vma)1134 static int usbvision_v4l2_mmap(struct file *file, struct vm_area_struct *vma)
1135 {
1136 struct usb_usbvision *usbvision = video_drvdata(file);
1137 int res;
1138
1139 if (mutex_lock_interruptible(&usbvision->v4l2_lock))
1140 return -ERESTARTSYS;
1141 res = usbvision_mmap(file, vma);
1142 mutex_unlock(&usbvision->v4l2_lock);
1143 return res;
1144 }
1145
1146 /*
1147 * Here comes the stuff for radio on usbvision based devices
1148 *
1149 */
usbvision_radio_open(struct file * file)1150 static int usbvision_radio_open(struct file *file)
1151 {
1152 struct usb_usbvision *usbvision = video_drvdata(file);
1153 int err_code = 0;
1154
1155 PDEBUG(DBG_IO, "%s:", __func__);
1156
1157 if (mutex_lock_interruptible(&usbvision->v4l2_lock))
1158 return -ERESTARTSYS;
1159 if (usbvision->user) {
1160 dev_err(&usbvision->rdev.dev,
1161 "%s: Someone tried to open an already opened USBVision Radio!\n",
1162 __func__);
1163 err_code = -EBUSY;
1164 } else {
1165 if (power_on_at_open) {
1166 usbvision_reset_power_off_timer(usbvision);
1167 if (usbvision->power == 0) {
1168 usbvision_power_on(usbvision);
1169 usbvision_i2c_register(usbvision);
1170 }
1171 }
1172
1173 /* Alternate interface 1 is is the biggest frame size */
1174 err_code = usbvision_set_alternate(usbvision);
1175 if (err_code < 0) {
1176 usbvision->last_error = err_code;
1177 err_code = -EBUSY;
1178 goto out;
1179 }
1180
1181 /* If so far no errors then we shall start the radio */
1182 usbvision->radio = 1;
1183 call_all(usbvision, tuner, s_radio);
1184 usbvision_set_audio(usbvision, USBVISION_AUDIO_RADIO);
1185 usbvision->user++;
1186 }
1187
1188 if (err_code) {
1189 if (power_on_at_open) {
1190 usbvision_i2c_unregister(usbvision);
1191 usbvision_power_off(usbvision);
1192 usbvision->initialized = 0;
1193 }
1194 }
1195 out:
1196 mutex_unlock(&usbvision->v4l2_lock);
1197 return err_code;
1198 }
1199
1200
usbvision_radio_close(struct file * file)1201 static int usbvision_radio_close(struct file *file)
1202 {
1203 struct usb_usbvision *usbvision = video_drvdata(file);
1204 int err_code = 0;
1205
1206 PDEBUG(DBG_IO, "");
1207
1208 mutex_lock(&usbvision->v4l2_lock);
1209 /* Set packet size to 0 */
1210 usbvision->iface_alt = 0;
1211 err_code = usb_set_interface(usbvision->dev, usbvision->iface,
1212 usbvision->iface_alt);
1213
1214 usbvision_audio_off(usbvision);
1215 usbvision->radio = 0;
1216 usbvision->user--;
1217
1218 if (power_on_at_open) {
1219 usbvision_set_power_off_timer(usbvision);
1220 usbvision->initialized = 0;
1221 }
1222
1223 if (usbvision->remove_pending) {
1224 printk(KERN_INFO "%s: Final disconnect\n", __func__);
1225 usbvision_release(usbvision);
1226 return err_code;
1227 }
1228
1229 mutex_unlock(&usbvision->v4l2_lock);
1230 PDEBUG(DBG_IO, "success");
1231 return err_code;
1232 }
1233
1234 /* Video registration stuff */
1235
1236 /* Video template */
1237 static const struct v4l2_file_operations usbvision_fops = {
1238 .owner = THIS_MODULE,
1239 .open = usbvision_v4l2_open,
1240 .release = usbvision_v4l2_close,
1241 .read = usbvision_v4l2_read,
1242 .mmap = usbvision_v4l2_mmap,
1243 .unlocked_ioctl = video_ioctl2,
1244 /* .poll = video_poll, */
1245 };
1246
1247 static const struct v4l2_ioctl_ops usbvision_ioctl_ops = {
1248 .vidioc_querycap = vidioc_querycap,
1249 .vidioc_enum_fmt_vid_cap = vidioc_enum_fmt_vid_cap,
1250 .vidioc_g_fmt_vid_cap = vidioc_g_fmt_vid_cap,
1251 .vidioc_try_fmt_vid_cap = vidioc_try_fmt_vid_cap,
1252 .vidioc_s_fmt_vid_cap = vidioc_s_fmt_vid_cap,
1253 .vidioc_reqbufs = vidioc_reqbufs,
1254 .vidioc_querybuf = vidioc_querybuf,
1255 .vidioc_qbuf = vidioc_qbuf,
1256 .vidioc_dqbuf = vidioc_dqbuf,
1257 .vidioc_s_std = vidioc_s_std,
1258 .vidioc_g_std = vidioc_g_std,
1259 .vidioc_enum_input = vidioc_enum_input,
1260 .vidioc_g_input = vidioc_g_input,
1261 .vidioc_s_input = vidioc_s_input,
1262 .vidioc_queryctrl = vidioc_queryctrl,
1263 .vidioc_g_audio = vidioc_g_audio,
1264 .vidioc_s_audio = vidioc_s_audio,
1265 .vidioc_g_ctrl = vidioc_g_ctrl,
1266 .vidioc_s_ctrl = vidioc_s_ctrl,
1267 .vidioc_streamon = vidioc_streamon,
1268 .vidioc_streamoff = vidioc_streamoff,
1269 .vidioc_g_tuner = vidioc_g_tuner,
1270 .vidioc_s_tuner = vidioc_s_tuner,
1271 .vidioc_g_frequency = vidioc_g_frequency,
1272 .vidioc_s_frequency = vidioc_s_frequency,
1273 #ifdef CONFIG_VIDEO_ADV_DEBUG
1274 .vidioc_g_register = vidioc_g_register,
1275 .vidioc_s_register = vidioc_s_register,
1276 #endif
1277 };
1278
1279 static struct video_device usbvision_video_template = {
1280 .fops = &usbvision_fops,
1281 .ioctl_ops = &usbvision_ioctl_ops,
1282 .name = "usbvision-video",
1283 .release = video_device_release_empty,
1284 .tvnorms = USBVISION_NORMS,
1285 };
1286
1287
1288 /* Radio template */
1289 static const struct v4l2_file_operations usbvision_radio_fops = {
1290 .owner = THIS_MODULE,
1291 .open = usbvision_radio_open,
1292 .release = usbvision_radio_close,
1293 .unlocked_ioctl = video_ioctl2,
1294 };
1295
1296 static const struct v4l2_ioctl_ops usbvision_radio_ioctl_ops = {
1297 .vidioc_querycap = vidioc_querycap,
1298 .vidioc_enum_input = vidioc_enum_input,
1299 .vidioc_g_input = vidioc_g_input,
1300 .vidioc_s_input = vidioc_s_input,
1301 .vidioc_queryctrl = vidioc_queryctrl,
1302 .vidioc_g_audio = vidioc_g_audio,
1303 .vidioc_s_audio = vidioc_s_audio,
1304 .vidioc_g_ctrl = vidioc_g_ctrl,
1305 .vidioc_s_ctrl = vidioc_s_ctrl,
1306 .vidioc_g_tuner = vidioc_g_tuner,
1307 .vidioc_s_tuner = vidioc_s_tuner,
1308 .vidioc_g_frequency = vidioc_g_frequency,
1309 .vidioc_s_frequency = vidioc_s_frequency,
1310 };
1311
1312 static struct video_device usbvision_radio_template = {
1313 .fops = &usbvision_radio_fops,
1314 .name = "usbvision-radio",
1315 .release = video_device_release_empty,
1316 .ioctl_ops = &usbvision_radio_ioctl_ops,
1317 };
1318
1319
usbvision_vdev_init(struct usb_usbvision * usbvision,struct video_device * vdev,const struct video_device * vdev_template,const char * name)1320 static void usbvision_vdev_init(struct usb_usbvision *usbvision,
1321 struct video_device *vdev,
1322 const struct video_device *vdev_template,
1323 const char *name)
1324 {
1325 struct usb_device *usb_dev = usbvision->dev;
1326
1327 if (usb_dev == NULL) {
1328 dev_err(&usbvision->dev->dev,
1329 "%s: usbvision->dev is not set\n", __func__);
1330 return;
1331 }
1332
1333 *vdev = *vdev_template;
1334 vdev->lock = &usbvision->v4l2_lock;
1335 vdev->v4l2_dev = &usbvision->v4l2_dev;
1336 snprintf(vdev->name, sizeof(vdev->name), "%s", name);
1337 video_set_drvdata(vdev, usbvision);
1338 }
1339
1340 /* unregister video4linux devices */
usbvision_unregister_video(struct usb_usbvision * usbvision)1341 static void usbvision_unregister_video(struct usb_usbvision *usbvision)
1342 {
1343 /* Radio Device: */
1344 if (video_is_registered(&usbvision->rdev)) {
1345 PDEBUG(DBG_PROBE, "unregister %s [v4l2]",
1346 video_device_node_name(&usbvision->rdev));
1347 video_unregister_device(&usbvision->rdev);
1348 }
1349
1350 /* Video Device: */
1351 if (video_is_registered(&usbvision->vdev)) {
1352 PDEBUG(DBG_PROBE, "unregister %s [v4l2]",
1353 video_device_node_name(&usbvision->vdev));
1354 video_unregister_device(&usbvision->vdev);
1355 }
1356 }
1357
1358 /* register video4linux devices */
usbvision_register_video(struct usb_usbvision * usbvision)1359 static int usbvision_register_video(struct usb_usbvision *usbvision)
1360 {
1361 /* Video Device: */
1362 usbvision_vdev_init(usbvision, &usbvision->vdev,
1363 &usbvision_video_template, "USBVision Video");
1364 if (video_register_device(&usbvision->vdev, VFL_TYPE_GRABBER, video_nr) < 0)
1365 goto err_exit;
1366 printk(KERN_INFO "USBVision[%d]: registered USBVision Video device %s [v4l2]\n",
1367 usbvision->nr, video_device_node_name(&usbvision->vdev));
1368
1369 /* Radio Device: */
1370 if (usbvision_device_data[usbvision->dev_model].radio) {
1371 /* usbvision has radio */
1372 usbvision_vdev_init(usbvision, &usbvision->rdev,
1373 &usbvision_radio_template, "USBVision Radio");
1374 if (video_register_device(&usbvision->rdev, VFL_TYPE_RADIO, radio_nr) < 0)
1375 goto err_exit;
1376 printk(KERN_INFO "USBVision[%d]: registered USBVision Radio device %s [v4l2]\n",
1377 usbvision->nr, video_device_node_name(&usbvision->rdev));
1378 }
1379 /* all done */
1380 return 0;
1381
1382 err_exit:
1383 dev_err(&usbvision->dev->dev,
1384 "USBVision[%d]: video_register_device() failed\n",
1385 usbvision->nr);
1386 usbvision_unregister_video(usbvision);
1387 return -1;
1388 }
1389
1390 /*
1391 * usbvision_alloc()
1392 *
1393 * This code allocates the struct usb_usbvision.
1394 * It is filled with default values.
1395 *
1396 * Returns NULL on error, a pointer to usb_usbvision else.
1397 *
1398 */
usbvision_alloc(struct usb_device * dev,struct usb_interface * intf)1399 static struct usb_usbvision *usbvision_alloc(struct usb_device *dev,
1400 struct usb_interface *intf)
1401 {
1402 struct usb_usbvision *usbvision;
1403
1404 usbvision = kzalloc(sizeof(struct usb_usbvision), GFP_KERNEL);
1405 if (usbvision == NULL)
1406 return NULL;
1407
1408 usbvision->dev = dev;
1409 if (v4l2_device_register(&intf->dev, &usbvision->v4l2_dev))
1410 goto err_free;
1411
1412 mutex_init(&usbvision->v4l2_lock);
1413
1414 /* prepare control urb for control messages during interrupts */
1415 usbvision->ctrl_urb = usb_alloc_urb(USBVISION_URB_FRAMES, GFP_KERNEL);
1416 if (usbvision->ctrl_urb == NULL)
1417 goto err_unreg;
1418 init_waitqueue_head(&usbvision->ctrl_urb_wq);
1419
1420 usbvision_init_power_off_timer(usbvision);
1421
1422 return usbvision;
1423
1424 err_unreg:
1425 v4l2_device_unregister(&usbvision->v4l2_dev);
1426 err_free:
1427 kfree(usbvision);
1428 return NULL;
1429 }
1430
1431 /*
1432 * usbvision_release()
1433 *
1434 * This code does final release of struct usb_usbvision. This happens
1435 * after the device is disconnected -and- all clients closed their files.
1436 *
1437 */
usbvision_release(struct usb_usbvision * usbvision)1438 static void usbvision_release(struct usb_usbvision *usbvision)
1439 {
1440 PDEBUG(DBG_PROBE, "");
1441
1442 usbvision_reset_power_off_timer(usbvision);
1443
1444 usbvision->initialized = 0;
1445
1446 usbvision_remove_sysfs(&usbvision->vdev);
1447 usbvision_unregister_video(usbvision);
1448 kfree(usbvision->alt_max_pkt_size);
1449
1450 usb_free_urb(usbvision->ctrl_urb);
1451
1452 v4l2_device_unregister(&usbvision->v4l2_dev);
1453 kfree(usbvision);
1454
1455 PDEBUG(DBG_PROBE, "success");
1456 }
1457
1458
1459 /*********************** usb interface **********************************/
1460
usbvision_configure_video(struct usb_usbvision * usbvision)1461 static void usbvision_configure_video(struct usb_usbvision *usbvision)
1462 {
1463 int model;
1464
1465 if (usbvision == NULL)
1466 return;
1467
1468 model = usbvision->dev_model;
1469 usbvision->palette = usbvision_v4l2_format[2]; /* V4L2_PIX_FMT_RGB24; */
1470
1471 if (usbvision_device_data[usbvision->dev_model].vin_reg2_override) {
1472 usbvision->vin_reg2_preset =
1473 usbvision_device_data[usbvision->dev_model].vin_reg2;
1474 } else {
1475 usbvision->vin_reg2_preset = 0;
1476 }
1477
1478 usbvision->tvnorm_id = usbvision_device_data[model].video_norm;
1479
1480 usbvision->video_inputs = usbvision_device_data[model].video_channels;
1481 usbvision->ctl_input = 0;
1482
1483 /* This should be here to make i2c clients to be able to register */
1484 /* first switch off audio */
1485 if (usbvision_device_data[model].audio_channels > 0)
1486 usbvision_audio_off(usbvision);
1487 if (!power_on_at_open) {
1488 /* and then power up the noisy tuner */
1489 usbvision_power_on(usbvision);
1490 usbvision_i2c_register(usbvision);
1491 }
1492 }
1493
1494 /*
1495 * usbvision_probe()
1496 *
1497 * This procedure queries device descriptor and accepts the interface
1498 * if it looks like USBVISION video device
1499 *
1500 */
usbvision_probe(struct usb_interface * intf,const struct usb_device_id * devid)1501 static int usbvision_probe(struct usb_interface *intf,
1502 const struct usb_device_id *devid)
1503 {
1504 struct usb_device *dev = usb_get_dev(interface_to_usbdev(intf));
1505 struct usb_interface *uif;
1506 __u8 ifnum = intf->altsetting->desc.bInterfaceNumber;
1507 const struct usb_host_interface *interface;
1508 struct usb_usbvision *usbvision = NULL;
1509 const struct usb_endpoint_descriptor *endpoint;
1510 int model, i, ret;
1511
1512 PDEBUG(DBG_PROBE, "VID=%#04x, PID=%#04x, ifnum=%u",
1513 dev->descriptor.idVendor,
1514 dev->descriptor.idProduct, ifnum);
1515
1516 model = devid->driver_info;
1517 if (model < 0 || model >= usbvision_device_data_size) {
1518 PDEBUG(DBG_PROBE, "model out of bounds %d", model);
1519 ret = -ENODEV;
1520 goto err_usb;
1521 }
1522 printk(KERN_INFO "%s: %s found\n", __func__,
1523 usbvision_device_data[model].model_string);
1524
1525 if (usbvision_device_data[model].interface >= 0)
1526 interface = &dev->actconfig->interface[usbvision_device_data[model].interface]->altsetting[0];
1527 else if (ifnum < dev->actconfig->desc.bNumInterfaces)
1528 interface = &dev->actconfig->interface[ifnum]->altsetting[0];
1529 else {
1530 dev_err(&intf->dev, "interface %d is invalid, max is %d\n",
1531 ifnum, dev->actconfig->desc.bNumInterfaces - 1);
1532 ret = -ENODEV;
1533 goto err_usb;
1534 }
1535
1536 if (interface->desc.bNumEndpoints < 2) {
1537 dev_err(&intf->dev, "interface %d has %d endpoints, but must"
1538 " have minimum 2\n", ifnum, interface->desc.bNumEndpoints);
1539 ret = -ENODEV;
1540 goto err_usb;
1541 }
1542 endpoint = &interface->endpoint[1].desc;
1543
1544 if (!usb_endpoint_xfer_isoc(endpoint)) {
1545 dev_err(&intf->dev, "%s: interface %d. has non-ISO endpoint!\n",
1546 __func__, ifnum);
1547 dev_err(&intf->dev, "%s: Endpoint attributes %d",
1548 __func__, endpoint->bmAttributes);
1549 ret = -ENODEV;
1550 goto err_usb;
1551 }
1552 if (usb_endpoint_dir_out(endpoint)) {
1553 dev_err(&intf->dev, "%s: interface %d. has ISO OUT endpoint!\n",
1554 __func__, ifnum);
1555 ret = -ENODEV;
1556 goto err_usb;
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 ret = -ENOMEM;
1563 goto err_usb;
1564 }
1565
1566 if (dev->descriptor.bNumConfigurations > 1)
1567 usbvision->bridge_type = BRIDGE_NT1004;
1568 else if (model == DAZZLE_DVC_90_REV_1_SECAM)
1569 usbvision->bridge_type = BRIDGE_NT1005;
1570 else
1571 usbvision->bridge_type = BRIDGE_NT1003;
1572 PDEBUG(DBG_PROBE, "bridge_type %d", usbvision->bridge_type);
1573
1574 /* compute alternate max packet sizes */
1575 uif = dev->actconfig->interface[0];
1576
1577 usbvision->num_alt = uif->num_altsetting;
1578 PDEBUG(DBG_PROBE, "Alternate settings: %i", usbvision->num_alt);
1579 usbvision->alt_max_pkt_size = kmalloc(32 * usbvision->num_alt, GFP_KERNEL);
1580 if (usbvision->alt_max_pkt_size == NULL) {
1581 dev_err(&intf->dev, "usbvision: out of memory!\n");
1582 ret = -ENOMEM;
1583 goto err_pkt;
1584 }
1585
1586 for (i = 0; i < usbvision->num_alt; i++) {
1587 u16 tmp = le16_to_cpu(uif->altsetting[i].endpoint[1].desc.
1588 wMaxPacketSize);
1589 usbvision->alt_max_pkt_size[i] =
1590 (tmp & 0x07ff) * (((tmp & 0x1800) >> 11) + 1);
1591 PDEBUG(DBG_PROBE, "Alternate setting %i, max size= %i", i,
1592 usbvision->alt_max_pkt_size[i]);
1593 }
1594
1595
1596 usbvision->nr = usbvision_nr++;
1597
1598 usbvision->have_tuner = usbvision_device_data[model].tuner;
1599 if (usbvision->have_tuner)
1600 usbvision->tuner_type = usbvision_device_data[model].tuner_type;
1601
1602 usbvision->dev_model = model;
1603 usbvision->remove_pending = 0;
1604 usbvision->iface = ifnum;
1605 usbvision->iface_alt = 0;
1606 usbvision->video_endp = endpoint->bEndpointAddress;
1607 usbvision->isoc_packet_size = 0;
1608 usbvision->usb_bandwidth = 0;
1609 usbvision->user = 0;
1610 usbvision->streaming = stream_off;
1611 usbvision_configure_video(usbvision);
1612 usbvision_register_video(usbvision);
1613
1614 usbvision_create_sysfs(&usbvision->vdev);
1615
1616 PDEBUG(DBG_PROBE, "success");
1617 return 0;
1618
1619 err_pkt:
1620 usbvision_release(usbvision);
1621 err_usb:
1622 usb_put_dev(dev);
1623 return ret;
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