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sched: Remove double_rq_lock() from __migrate_task()
[linux/fpc-iii.git] / drivers / media / usb / usbvision / usbvision-video.c
blob68bc9615660efaf584bc1361b54706a5ef2b4df1
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
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
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
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
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
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
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
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
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
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
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
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
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 */
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 */
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 }
450 mutex_unlock(&usbvision->v4l2_lock);
451
452 PDEBUG(DBG_IO, "success");
453 return 0;
454 }
455
456
457 /*
458 * usbvision_ioctl()
459 *
460 * This is part of Video 4 Linux API. The procedure handles ioctl() calls.
461 *
462 */
463 #ifdef CONFIG_VIDEO_ADV_DEBUG
464 static int vidioc_g_register(struct file *file, void *priv,
465 struct v4l2_dbg_register *reg)
466 {
467 struct usb_usbvision *usbvision = video_drvdata(file);
468 int err_code;
469
470 /* NT100x has a 8-bit register space */
471 err_code = usbvision_read_reg(usbvision, reg->reg&0xff);
472 if (err_code < 0) {
473 dev_err(&usbvision->vdev->dev,
474 "%s: VIDIOC_DBG_G_REGISTER failed: error %d\n",
475 __func__, err_code);
476 return err_code;
477 }
478 reg->val = err_code;
479 reg->size = 1;
480 return 0;
481 }
482
483 static int vidioc_s_register(struct file *file, void *priv,
484 const struct v4l2_dbg_register *reg)
485 {
486 struct usb_usbvision *usbvision = video_drvdata(file);
487 int err_code;
488
489 /* NT100x has a 8-bit register space */
490 err_code = usbvision_write_reg(usbvision, reg->reg & 0xff, reg->val);
491 if (err_code < 0) {
492 dev_err(&usbvision->vdev->dev,
493 "%s: VIDIOC_DBG_S_REGISTER failed: error %d\n",
494 __func__, err_code);
495 return err_code;
496 }
497 return 0;
498 }
499 #endif
500
501 static int vidioc_querycap(struct file *file, void *priv,
502 struct v4l2_capability *vc)
503 {
504 struct usb_usbvision *usbvision = video_drvdata(file);
505
506 strlcpy(vc->driver, "USBVision", sizeof(vc->driver));
507 strlcpy(vc->card,
508 usbvision_device_data[usbvision->dev_model].model_string,
509 sizeof(vc->card));
510 usb_make_path(usbvision->dev, vc->bus_info, sizeof(vc->bus_info));
511 vc->capabilities = V4L2_CAP_VIDEO_CAPTURE |
512 V4L2_CAP_AUDIO |
513 V4L2_CAP_READWRITE |
514 V4L2_CAP_STREAMING |
515 (usbvision->have_tuner ? V4L2_CAP_TUNER : 0);
516 return 0;
517 }
518
519 static int vidioc_enum_input(struct file *file, void *priv,
520 struct v4l2_input *vi)
521 {
522 struct usb_usbvision *usbvision = video_drvdata(file);
523 int chan;
524
525 if (vi->index >= usbvision->video_inputs)
526 return -EINVAL;
527 if (usbvision->have_tuner)
528 chan = vi->index;
529 else
530 chan = vi->index + 1; /* skip Television string*/
531
532 /* Determine the requested input characteristics
533 specific for each usbvision card model */
534 switch (chan) {
535 case 0:
536 if (usbvision_device_data[usbvision->dev_model].video_channels == 4) {
537 strcpy(vi->name, "White Video Input");
538 } else {
539 strcpy(vi->name, "Television");
540 vi->type = V4L2_INPUT_TYPE_TUNER;
541 vi->audioset = 1;
542 vi->tuner = chan;
543 vi->std = USBVISION_NORMS;
544 }
545 break;
546 case 1:
547 vi->type = V4L2_INPUT_TYPE_CAMERA;
548 if (usbvision_device_data[usbvision->dev_model].video_channels == 4)
549 strcpy(vi->name, "Green Video Input");
550 else
551 strcpy(vi->name, "Composite Video Input");
552 vi->std = V4L2_STD_PAL;
553 break;
554 case 2:
555 vi->type = V4L2_INPUT_TYPE_CAMERA;
556 if (usbvision_device_data[usbvision->dev_model].video_channels == 4)
557 strcpy(vi->name, "Yellow Video Input");
558 else
559 strcpy(vi->name, "S-Video Input");
560 vi->std = V4L2_STD_PAL;
561 break;
562 case 3:
563 vi->type = V4L2_INPUT_TYPE_CAMERA;
564 strcpy(vi->name, "Red Video Input");
565 vi->std = V4L2_STD_PAL;
566 break;
567 }
568 return 0;
569 }
570
571 static int vidioc_g_input(struct file *file, void *priv, unsigned int *input)
572 {
573 struct usb_usbvision *usbvision = video_drvdata(file);
574
575 *input = usbvision->ctl_input;
576 return 0;
577 }
578
579 static int vidioc_s_input(struct file *file, void *priv, unsigned int input)
580 {
581 struct usb_usbvision *usbvision = video_drvdata(file);
582
583 if (input >= usbvision->video_inputs)
584 return -EINVAL;
585
586 usbvision_muxsel(usbvision, input);
587 usbvision_set_input(usbvision);
588 usbvision_set_output(usbvision,
589 usbvision->curwidth,
590 usbvision->curheight);
591 return 0;
592 }
593
594 static int vidioc_s_std(struct file *file, void *priv, v4l2_std_id id)
595 {
596 struct usb_usbvision *usbvision = video_drvdata(file);
597
598 usbvision->tvnorm_id = id;
599
600 call_all(usbvision, video, s_std, usbvision->tvnorm_id);
601 /* propagate the change to the decoder */
602 usbvision_muxsel(usbvision, usbvision->ctl_input);
603
604 return 0;
605 }
606
607 static int vidioc_g_std(struct file *file, void *priv, v4l2_std_id *id)
608 {
609 struct usb_usbvision *usbvision = video_drvdata(file);
610
611 *id = usbvision->tvnorm_id;
612 return 0;
613 }
614
615 static int vidioc_g_tuner(struct file *file, void *priv,
616 struct v4l2_tuner *vt)
617 {
618 struct usb_usbvision *usbvision = video_drvdata(file);
619
620 if (!usbvision->have_tuner || vt->index) /* Only tuner 0 */
621 return -EINVAL;
622 if (usbvision->radio) {
623 strcpy(vt->name, "Radio");
624 vt->type = V4L2_TUNER_RADIO;
625 } else {
626 strcpy(vt->name, "Television");
627 }
628 /* Let clients fill in the remainder of this struct */
629 call_all(usbvision, tuner, g_tuner, vt);
630
631 return 0;
632 }
633
634 static int vidioc_s_tuner(struct file *file, void *priv,
635 const struct v4l2_tuner *vt)
636 {
637 struct usb_usbvision *usbvision = video_drvdata(file);
638
639 /* Only no or one tuner for now */
640 if (!usbvision->have_tuner || vt->index)
641 return -EINVAL;
642 /* let clients handle this */
643 call_all(usbvision, tuner, s_tuner, vt);
644
645 return 0;
646 }
647
648 static int vidioc_g_frequency(struct file *file, void *priv,
649 struct v4l2_frequency *freq)
650 {
651 struct usb_usbvision *usbvision = video_drvdata(file);
652
653 freq->tuner = 0; /* Only one tuner */
654 if (usbvision->radio)
655 freq->type = V4L2_TUNER_RADIO;
656 else
657 freq->type = V4L2_TUNER_ANALOG_TV;
658 freq->frequency = usbvision->freq;
659
660 return 0;
661 }
662
663 static int vidioc_s_frequency(struct file *file, void *priv,
664 const struct v4l2_frequency *freq)
665 {
666 struct usb_usbvision *usbvision = video_drvdata(file);
667
668 /* Only no or one tuner for now */
669 if (!usbvision->have_tuner || freq->tuner)
670 return -EINVAL;
671
672 usbvision->freq = freq->frequency;
673 call_all(usbvision, tuner, s_frequency, freq);
674
675 return 0;
676 }
677
678 static int vidioc_g_audio(struct file *file, void *priv, struct v4l2_audio *a)
679 {
680 struct usb_usbvision *usbvision = video_drvdata(file);
681
682 if (usbvision->radio)
683 strcpy(a->name, "Radio");
684 else
685 strcpy(a->name, "TV");
686
687 return 0;
688 }
689
690 static int vidioc_s_audio(struct file *file, void *fh,
691 const struct v4l2_audio *a)
692 {
693 if (a->index)
694 return -EINVAL;
695 return 0;
696 }
697
698 static int vidioc_queryctrl(struct file *file, void *priv,
699 struct v4l2_queryctrl *ctrl)
700 {
701 struct usb_usbvision *usbvision = video_drvdata(file);
702
703 call_all(usbvision, core, queryctrl, ctrl);
704
705 if (!ctrl->type)
706 return -EINVAL;
707
708 return 0;
709 }
710
711 static int vidioc_g_ctrl(struct file *file, void *priv,
712 struct v4l2_control *ctrl)
713 {
714 struct usb_usbvision *usbvision = video_drvdata(file);
715
716 call_all(usbvision, core, g_ctrl, ctrl);
717 return 0;
718 }
719
720 static int vidioc_s_ctrl(struct file *file, void *priv,
721 struct v4l2_control *ctrl)
722 {
723 struct usb_usbvision *usbvision = video_drvdata(file);
724
725 call_all(usbvision, core, s_ctrl, ctrl);
726 return 0;
727 }
728
729 static int vidioc_reqbufs(struct file *file,
730 void *priv, struct v4l2_requestbuffers *vr)
731 {
732 struct usb_usbvision *usbvision = video_drvdata(file);
733 int ret;
734
735 RESTRICT_TO_RANGE(vr->count, 1, USBVISION_NUMFRAMES);
736
737 /* Check input validity:
738 the user must do a VIDEO CAPTURE and MMAP method. */
739 if (vr->memory != V4L2_MEMORY_MMAP)
740 return -EINVAL;
741
742 if (usbvision->streaming == stream_on) {
743 ret = usbvision_stream_interrupt(usbvision);
744 if (ret)
745 return ret;
746 }
747
748 usbvision_frames_free(usbvision);
749 usbvision_empty_framequeues(usbvision);
750 vr->count = usbvision_frames_alloc(usbvision, vr->count);
751
752 usbvision->cur_frame = NULL;
753
754 return 0;
755 }
756
757 static int vidioc_querybuf(struct file *file,
758 void *priv, struct v4l2_buffer *vb)
759 {
760 struct usb_usbvision *usbvision = video_drvdata(file);
761 struct usbvision_frame *frame;
762
763 /* FIXME : must control
764 that buffers are mapped (VIDIOC_REQBUFS has been called) */
765 if (vb->index >= usbvision->num_frames)
766 return -EINVAL;
767 /* Updating the corresponding frame state */
768 vb->flags = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC;
769 frame = &usbvision->frame[vb->index];
770 if (frame->grabstate >= frame_state_ready)
771 vb->flags |= V4L2_BUF_FLAG_QUEUED;
772 if (frame->grabstate >= frame_state_done)
773 vb->flags |= V4L2_BUF_FLAG_DONE;
774 if (frame->grabstate == frame_state_unused)
775 vb->flags |= V4L2_BUF_FLAG_MAPPED;
776 vb->memory = V4L2_MEMORY_MMAP;
777
778 vb->m.offset = vb->index * PAGE_ALIGN(usbvision->max_frame_size);
779
780 vb->memory = V4L2_MEMORY_MMAP;
781 vb->field = V4L2_FIELD_NONE;
782 vb->length = usbvision->curwidth *
783 usbvision->curheight *
784 usbvision->palette.bytes_per_pixel;
785 vb->timestamp = usbvision->frame[vb->index].timestamp;
786 vb->sequence = usbvision->frame[vb->index].sequence;
787 return 0;
788 }
789
790 static int vidioc_qbuf(struct file *file, void *priv, struct v4l2_buffer *vb)
791 {
792 struct usb_usbvision *usbvision = video_drvdata(file);
793 struct usbvision_frame *frame;
794 unsigned long lock_flags;
795
796 /* FIXME : works only on VIDEO_CAPTURE MODE, MMAP. */
797 if (vb->index >= usbvision->num_frames)
798 return -EINVAL;
799
800 frame = &usbvision->frame[vb->index];
801
802 if (frame->grabstate != frame_state_unused)
803 return -EAGAIN;
804
805 /* Mark it as ready and enqueue frame */
806 frame->grabstate = frame_state_ready;
807 frame->scanstate = scan_state_scanning;
808 frame->scanlength = 0; /* Accumulated in usbvision_parse_data() */
809
810 vb->flags &= ~V4L2_BUF_FLAG_DONE;
811
812 /* set v4l2_format index */
813 frame->v4l2_format = usbvision->palette;
814
815 spin_lock_irqsave(&usbvision->queue_lock, lock_flags);
816 list_add_tail(&usbvision->frame[vb->index].frame, &usbvision->inqueue);
817 spin_unlock_irqrestore(&usbvision->queue_lock, lock_flags);
818
819 return 0;
820 }
821
822 static int vidioc_dqbuf(struct file *file, void *priv, struct v4l2_buffer *vb)
823 {
824 struct usb_usbvision *usbvision = video_drvdata(file);
825 int ret;
826 struct usbvision_frame *f;
827 unsigned long lock_flags;
828
829 if (list_empty(&(usbvision->outqueue))) {
830 if (usbvision->streaming == stream_idle)
831 return -EINVAL;
832 ret = wait_event_interruptible
833 (usbvision->wait_frame,
834 !list_empty(&(usbvision->outqueue)));
835 if (ret)
836 return ret;
837 }
838
839 spin_lock_irqsave(&usbvision->queue_lock, lock_flags);
840 f = list_entry(usbvision->outqueue.next,
841 struct usbvision_frame, frame);
842 list_del(usbvision->outqueue.next);
843 spin_unlock_irqrestore(&usbvision->queue_lock, lock_flags);
844
845 f->grabstate = frame_state_unused;
846
847 vb->memory = V4L2_MEMORY_MMAP;
848 vb->flags = V4L2_BUF_FLAG_MAPPED |
849 V4L2_BUF_FLAG_QUEUED |
850 V4L2_BUF_FLAG_DONE |
851 V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC;
852 vb->index = f->index;
853 vb->sequence = f->sequence;
854 vb->timestamp = f->timestamp;
855 vb->field = V4L2_FIELD_NONE;
856 vb->bytesused = f->scanlength;
857
858 return 0;
859 }
860
861 static int vidioc_streamon(struct file *file, void *priv, enum v4l2_buf_type i)
862 {
863 struct usb_usbvision *usbvision = video_drvdata(file);
864
865 usbvision->streaming = stream_on;
866 call_all(usbvision, video, s_stream, 1);
867
868 return 0;
869 }
870
871 static int vidioc_streamoff(struct file *file,
872 void *priv, enum v4l2_buf_type type)
873 {
874 struct usb_usbvision *usbvision = video_drvdata(file);
875
876 if (type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
877 return -EINVAL;
878
879 if (usbvision->streaming == stream_on) {
880 usbvision_stream_interrupt(usbvision);
881 /* Stop all video streamings */
882 call_all(usbvision, video, s_stream, 0);
883 }
884 usbvision_empty_framequeues(usbvision);
885
886 return 0;
887 }
888
889 static int vidioc_enum_fmt_vid_cap(struct file *file, void *priv,
890 struct v4l2_fmtdesc *vfd)
891 {
892 if (vfd->index >= USBVISION_SUPPORTED_PALETTES - 1)
893 return -EINVAL;
894 strcpy(vfd->description, usbvision_v4l2_format[vfd->index].desc);
895 vfd->pixelformat = usbvision_v4l2_format[vfd->index].format;
896 return 0;
897 }
898
899 static int vidioc_g_fmt_vid_cap(struct file *file, void *priv,
900 struct v4l2_format *vf)
901 {
902 struct usb_usbvision *usbvision = video_drvdata(file);
903 vf->fmt.pix.width = usbvision->curwidth;
904 vf->fmt.pix.height = usbvision->curheight;
905 vf->fmt.pix.pixelformat = usbvision->palette.format;
906 vf->fmt.pix.bytesperline =
907 usbvision->curwidth * usbvision->palette.bytes_per_pixel;
908 vf->fmt.pix.sizeimage = vf->fmt.pix.bytesperline * usbvision->curheight;
909 vf->fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M;
910 vf->fmt.pix.field = V4L2_FIELD_NONE; /* Always progressive image */
911
912 return 0;
913 }
914
915 static int vidioc_try_fmt_vid_cap(struct file *file, void *priv,
916 struct v4l2_format *vf)
917 {
918 struct usb_usbvision *usbvision = video_drvdata(file);
919 int format_idx;
920
921 /* Find requested format in available ones */
922 for (format_idx = 0; format_idx < USBVISION_SUPPORTED_PALETTES; format_idx++) {
923 if (vf->fmt.pix.pixelformat ==
924 usbvision_v4l2_format[format_idx].format) {
925 usbvision->palette = usbvision_v4l2_format[format_idx];
926 break;
927 }
928 }
929 /* robustness */
930 if (format_idx == USBVISION_SUPPORTED_PALETTES)
931 return -EINVAL;
932 RESTRICT_TO_RANGE(vf->fmt.pix.width, MIN_FRAME_WIDTH, MAX_FRAME_WIDTH);
933 RESTRICT_TO_RANGE(vf->fmt.pix.height, MIN_FRAME_HEIGHT, MAX_FRAME_HEIGHT);
934
935 vf->fmt.pix.bytesperline = vf->fmt.pix.width*
936 usbvision->palette.bytes_per_pixel;
937 vf->fmt.pix.sizeimage = vf->fmt.pix.bytesperline*vf->fmt.pix.height;
938
939 return 0;
940 }
941
942 static int vidioc_s_fmt_vid_cap(struct file *file, void *priv,
943 struct v4l2_format *vf)
944 {
945 struct usb_usbvision *usbvision = video_drvdata(file);
946 int ret;
947
948 ret = vidioc_try_fmt_vid_cap(file, priv, vf);
949 if (ret)
950 return ret;
951
952 /* stop io in case it is already in progress */
953 if (usbvision->streaming == stream_on) {
954 ret = usbvision_stream_interrupt(usbvision);
955 if (ret)
956 return ret;
957 }
958 usbvision_frames_free(usbvision);
959 usbvision_empty_framequeues(usbvision);
960
961 usbvision->cur_frame = NULL;
962
963 /* by now we are committed to the new data... */
964 usbvision_set_output(usbvision, vf->fmt.pix.width, vf->fmt.pix.height);
965
966 return 0;
967 }
968
969 static ssize_t usbvision_read(struct file *file, char __user *buf,
970 size_t count, loff_t *ppos)
971 {
972 struct usb_usbvision *usbvision = video_drvdata(file);
973 int noblock = file->f_flags & O_NONBLOCK;
974 unsigned long lock_flags;
975 int ret, i;
976 struct usbvision_frame *frame;
977
978 PDEBUG(DBG_IO, "%s: %ld bytes, noblock=%d", __func__,
979 (unsigned long)count, noblock);
980
981 if (!USBVISION_IS_OPERATIONAL(usbvision) || (buf == NULL))
982 return -EFAULT;
983
984 /* This entry point is compatible with the mmap routines
985 so that a user can do either VIDIOC_QBUF/VIDIOC_DQBUF
986 to get frames or call read on the device. */
987 if (!usbvision->num_frames) {
988 /* First, allocate some frames to work with
989 if this has not been done with VIDIOC_REQBUF */
990 usbvision_frames_free(usbvision);
991 usbvision_empty_framequeues(usbvision);
992 usbvision_frames_alloc(usbvision, USBVISION_NUMFRAMES);
993 }
994
995 if (usbvision->streaming != stream_on) {
996 /* no stream is running, make it running ! */
997 usbvision->streaming = stream_on;
998 call_all(usbvision, video, s_stream, 1);
999 }
1000
1001 /* Then, enqueue as many frames as possible
1002 (like a user of VIDIOC_QBUF would do) */
1003 for (i = 0; i < usbvision->num_frames; i++) {
1004 frame = &usbvision->frame[i];
1005 if (frame->grabstate == frame_state_unused) {
1006 /* Mark it as ready and enqueue frame */
1007 frame->grabstate = frame_state_ready;
1008 frame->scanstate = scan_state_scanning;
1009 /* Accumulated in usbvision_parse_data() */
1010 frame->scanlength = 0;
1011
1012 /* set v4l2_format index */
1013 frame->v4l2_format = usbvision->palette;
1014
1015 spin_lock_irqsave(&usbvision->queue_lock, lock_flags);
1016 list_add_tail(&frame->frame, &usbvision->inqueue);
1017 spin_unlock_irqrestore(&usbvision->queue_lock,
1018 lock_flags);
1019 }
1020 }
1021
1022 /* Then try to steal a frame (like a VIDIOC_DQBUF would do) */
1023 if (list_empty(&(usbvision->outqueue))) {
1024 if (noblock)
1025 return -EAGAIN;
1026
1027 ret = wait_event_interruptible
1028 (usbvision->wait_frame,
1029 !list_empty(&(usbvision->outqueue)));
1030 if (ret)
1031 return ret;
1032 }
1033
1034 spin_lock_irqsave(&usbvision->queue_lock, lock_flags);
1035 frame = list_entry(usbvision->outqueue.next,
1036 struct usbvision_frame, frame);
1037 list_del(usbvision->outqueue.next);
1038 spin_unlock_irqrestore(&usbvision->queue_lock, lock_flags);
1039
1040 /* An error returns an empty frame */
1041 if (frame->grabstate == frame_state_error) {
1042 frame->bytes_read = 0;
1043 return 0;
1044 }
1045
1046 PDEBUG(DBG_IO, "%s: frmx=%d, bytes_read=%ld, scanlength=%ld",
1047 __func__,
1048 frame->index, frame->bytes_read, frame->scanlength);
1049
1050 /* copy bytes to user space; we allow for partials reads */
1051 if ((count + frame->bytes_read) > (unsigned long)frame->scanlength)
1052 count = frame->scanlength - frame->bytes_read;
1053
1054 if (copy_to_user(buf, frame->data + frame->bytes_read, count))
1055 return -EFAULT;
1056
1057 frame->bytes_read += count;
1058 PDEBUG(DBG_IO, "%s: {copy} count used=%ld, new bytes_read=%ld",
1059 __func__,
1060 (unsigned long)count, frame->bytes_read);
1061
1062 /* For now, forget the frame if it has not been read in one shot. */
1063 /* if (frame->bytes_read >= frame->scanlength) {*/ /* All data has been read */
1064 frame->bytes_read = 0;
1065
1066 /* Mark it as available to be used again. */
1067 frame->grabstate = frame_state_unused;
1068 /* } */
1069
1070 return count;
1071 }
1072
1073 static ssize_t usbvision_v4l2_read(struct file *file, char __user *buf,
1074 size_t count, loff_t *ppos)
1075 {
1076 struct usb_usbvision *usbvision = video_drvdata(file);
1077 int res;
1078
1079 if (mutex_lock_interruptible(&usbvision->v4l2_lock))
1080 return -ERESTARTSYS;
1081 res = usbvision_read(file, buf, count, ppos);
1082 mutex_unlock(&usbvision->v4l2_lock);
1083 return res;
1084 }
1085
1086 static int usbvision_mmap(struct file *file, struct vm_area_struct *vma)
1087 {
1088 unsigned long size = vma->vm_end - vma->vm_start,
1089 start = vma->vm_start;
1090 void *pos;
1091 u32 i;
1092 struct usb_usbvision *usbvision = video_drvdata(file);
1093
1094 PDEBUG(DBG_MMAP, "mmap");
1095
1096 if (!USBVISION_IS_OPERATIONAL(usbvision))
1097 return -EFAULT;
1098
1099 if (!(vma->vm_flags & VM_WRITE) ||
1100 size != PAGE_ALIGN(usbvision->max_frame_size)) {
1101 return -EINVAL;
1102 }
1103
1104 for (i = 0; i < usbvision->num_frames; i++) {
1105 if (((PAGE_ALIGN(usbvision->max_frame_size)*i) >> PAGE_SHIFT) ==
1106 vma->vm_pgoff)
1107 break;
1108 }
1109 if (i == usbvision->num_frames) {
1110 PDEBUG(DBG_MMAP,
1111 "mmap: user supplied mapping address is out of range");
1112 return -EINVAL;
1113 }
1114
1115 /* VM_IO is eventually going to replace PageReserved altogether */
1116 vma->vm_flags |= VM_IO | VM_DONTEXPAND | VM_DONTDUMP;
1117
1118 pos = usbvision->frame[i].data;
1119 while (size > 0) {
1120 if (vm_insert_page(vma, start, vmalloc_to_page(pos))) {
1121 PDEBUG(DBG_MMAP, "mmap: vm_insert_page failed");
1122 return -EAGAIN;
1123 }
1124 start += PAGE_SIZE;
1125 pos += PAGE_SIZE;
1126 size -= PAGE_SIZE;
1127 }
1128
1129 return 0;
1130 }
1131
1132 static int usbvision_v4l2_mmap(struct file *file, struct vm_area_struct *vma)
1133 {
1134 struct usb_usbvision *usbvision = video_drvdata(file);
1135 int res;
1136
1137 if (mutex_lock_interruptible(&usbvision->v4l2_lock))
1138 return -ERESTARTSYS;
1139 res = usbvision_mmap(file, vma);
1140 mutex_unlock(&usbvision->v4l2_lock);
1141 return res;
1142 }
1143
1144 /*
1145 * Here comes the stuff for radio on usbvision based devices
1146 *
1147 */
1148 static int usbvision_radio_open(struct file *file)
1149 {
1150 struct usb_usbvision *usbvision = video_drvdata(file);
1151 int err_code = 0;
1152
1153 PDEBUG(DBG_IO, "%s:", __func__);
1154
1155 if (mutex_lock_interruptible(&usbvision->v4l2_lock))
1156 return -ERESTARTSYS;
1157 if (usbvision->user) {
1158 dev_err(&usbvision->rdev->dev,
1159 "%s: Someone tried to open an already opened USBVision Radio!\n",
1160 __func__);
1161 err_code = -EBUSY;
1162 } else {
1163 if (power_on_at_open) {
1164 usbvision_reset_power_off_timer(usbvision);
1165 if (usbvision->power == 0) {
1166 usbvision_power_on(usbvision);
1167 usbvision_i2c_register(usbvision);
1168 }
1169 }
1170
1171 /* Alternate interface 1 is is the biggest frame size */
1172 err_code = usbvision_set_alternate(usbvision);
1173 if (err_code < 0) {
1174 usbvision->last_error = err_code;
1175 err_code = -EBUSY;
1176 goto out;
1177 }
1178
1179 /* If so far no errors then we shall start the radio */
1180 usbvision->radio = 1;
1181 call_all(usbvision, tuner, s_radio);
1182 usbvision_set_audio(usbvision, USBVISION_AUDIO_RADIO);
1183 usbvision->user++;
1184 }
1185
1186 if (err_code) {
1187 if (power_on_at_open) {
1188 usbvision_i2c_unregister(usbvision);
1189 usbvision_power_off(usbvision);
1190 usbvision->initialized = 0;
1191 }
1192 }
1193 out:
1194 mutex_unlock(&usbvision->v4l2_lock);
1195 return err_code;
1196 }
1197
1198
1199 static int usbvision_radio_close(struct file *file)
1200 {
1201 struct usb_usbvision *usbvision = video_drvdata(file);
1202 int err_code = 0;
1203
1204 PDEBUG(DBG_IO, "");
1205
1206 mutex_lock(&usbvision->v4l2_lock);
1207 /* Set packet size to 0 */
1208 usbvision->iface_alt = 0;
1209 err_code = usb_set_interface(usbvision->dev, usbvision->iface,
1210 usbvision->iface_alt);
1211
1212 usbvision_audio_off(usbvision);
1213 usbvision->radio = 0;
1214 usbvision->user--;
1215
1216 if (power_on_at_open) {
1217 usbvision_set_power_off_timer(usbvision);
1218 usbvision->initialized = 0;
1219 }
1220
1221 if (usbvision->remove_pending) {
1222 printk(KERN_INFO "%s: Final disconnect\n", __func__);
1223 usbvision_release(usbvision);
1224 }
1225
1226 mutex_unlock(&usbvision->v4l2_lock);
1227 PDEBUG(DBG_IO, "success");
1228 return err_code;
1229 }
1230
1231 /* Video registration stuff */
1232
1233 /* Video template */
1234 static const struct v4l2_file_operations usbvision_fops = {
1235 .owner = THIS_MODULE,
1236 .open = usbvision_v4l2_open,
1237 .release = usbvision_v4l2_close,
1238 .read = usbvision_v4l2_read,
1239 .mmap = usbvision_v4l2_mmap,
1240 .unlocked_ioctl = video_ioctl2,
1241 /* .poll = video_poll, */
1242 };
1243
1244 static const struct v4l2_ioctl_ops usbvision_ioctl_ops = {
1245 .vidioc_querycap = vidioc_querycap,
1246 .vidioc_enum_fmt_vid_cap = vidioc_enum_fmt_vid_cap,
1247 .vidioc_g_fmt_vid_cap = vidioc_g_fmt_vid_cap,
1248 .vidioc_try_fmt_vid_cap = vidioc_try_fmt_vid_cap,
1249 .vidioc_s_fmt_vid_cap = vidioc_s_fmt_vid_cap,
1250 .vidioc_reqbufs = vidioc_reqbufs,
1251 .vidioc_querybuf = vidioc_querybuf,
1252 .vidioc_qbuf = vidioc_qbuf,
1253 .vidioc_dqbuf = vidioc_dqbuf,
1254 .vidioc_s_std = vidioc_s_std,
1255 .vidioc_g_std = vidioc_g_std,
1256 .vidioc_enum_input = vidioc_enum_input,
1257 .vidioc_g_input = vidioc_g_input,
1258 .vidioc_s_input = vidioc_s_input,
1259 .vidioc_queryctrl = vidioc_queryctrl,
1260 .vidioc_g_audio = vidioc_g_audio,
1261 .vidioc_s_audio = vidioc_s_audio,
1262 .vidioc_g_ctrl = vidioc_g_ctrl,
1263 .vidioc_s_ctrl = vidioc_s_ctrl,
1264 .vidioc_streamon = vidioc_streamon,
1265 .vidioc_streamoff = vidioc_streamoff,
1266 .vidioc_g_tuner = vidioc_g_tuner,
1267 .vidioc_s_tuner = vidioc_s_tuner,
1268 .vidioc_g_frequency = vidioc_g_frequency,
1269 .vidioc_s_frequency = vidioc_s_frequency,
1270 #ifdef CONFIG_VIDEO_ADV_DEBUG
1271 .vidioc_g_register = vidioc_g_register,
1272 .vidioc_s_register = vidioc_s_register,
1273 #endif
1274 };
1275
1276 static struct video_device usbvision_video_template = {
1277 .fops = &usbvision_fops,
1278 .ioctl_ops = &usbvision_ioctl_ops,
1279 .name = "usbvision-video",
1280 .release = video_device_release,
1281 .tvnorms = USBVISION_NORMS,
1282 };
1283
1284
1285 /* Radio template */
1286 static const struct v4l2_file_operations usbvision_radio_fops = {
1287 .owner = THIS_MODULE,
1288 .open = usbvision_radio_open,
1289 .release = usbvision_radio_close,
1290 .unlocked_ioctl = video_ioctl2,
1291 };
1292
1293 static const struct v4l2_ioctl_ops usbvision_radio_ioctl_ops = {
1294 .vidioc_querycap = vidioc_querycap,
1295 .vidioc_enum_input = vidioc_enum_input,
1296 .vidioc_g_input = vidioc_g_input,
1297 .vidioc_s_input = vidioc_s_input,
1298 .vidioc_queryctrl = vidioc_queryctrl,
1299 .vidioc_g_audio = vidioc_g_audio,
1300 .vidioc_s_audio = vidioc_s_audio,
1301 .vidioc_g_ctrl = vidioc_g_ctrl,
1302 .vidioc_s_ctrl = vidioc_s_ctrl,
1303 .vidioc_g_tuner = vidioc_g_tuner,
1304 .vidioc_s_tuner = vidioc_s_tuner,
1305 .vidioc_g_frequency = vidioc_g_frequency,
1306 .vidioc_s_frequency = vidioc_s_frequency,
1307 };
1308
1309 static struct video_device usbvision_radio_template = {
1310 .fops = &usbvision_radio_fops,
1311 .name = "usbvision-radio",
1312 .release = video_device_release,
1313 .ioctl_ops = &usbvision_radio_ioctl_ops,
1314 };
1315
1316
1317 static struct video_device *usbvision_vdev_init(struct usb_usbvision *usbvision,
1318 struct video_device *vdev_template,
1319 char *name)
1320 {
1321 struct usb_device *usb_dev = usbvision->dev;
1322 struct video_device *vdev;
1323
1324 if (usb_dev == NULL) {
1325 dev_err(&usbvision->dev->dev,
1326 "%s: usbvision->dev is not set\n", __func__);
1327 return NULL;
1328 }
1329
1330 vdev = video_device_alloc();
1331 if (NULL == vdev)
1332 return NULL;
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 return vdev;
1339 }
1340
1341 /* unregister video4linux devices */
1342 static void usbvision_unregister_video(struct usb_usbvision *usbvision)
1343 {
1344 /* Radio Device: */
1345 if (usbvision->rdev) {
1346 PDEBUG(DBG_PROBE, "unregister %s [v4l2]",
1347 video_device_node_name(usbvision->rdev));
1348 if (video_is_registered(usbvision->rdev))
1349 video_unregister_device(usbvision->rdev);
1350 else
1351 video_device_release(usbvision->rdev);
1352 usbvision->rdev = NULL;
1353 }
1354
1355 /* Video Device: */
1356 if (usbvision->vdev) {
1357 PDEBUG(DBG_PROBE, "unregister %s [v4l2]",
1358 video_device_node_name(usbvision->vdev));
1359 if (video_is_registered(usbvision->vdev))
1360 video_unregister_device(usbvision->vdev);
1361 else
1362 video_device_release(usbvision->vdev);
1363 usbvision->vdev = NULL;
1364 }
1365 }
1366
1367 /* register video4linux devices */
1368 static int usbvision_register_video(struct usb_usbvision *usbvision)
1369 {
1370 /* Video Device: */
1371 usbvision->vdev = usbvision_vdev_init(usbvision,
1372 &usbvision_video_template,
1373 "USBVision Video");
1374 if (usbvision->vdev == NULL)
1375 goto err_exit;
1376 if (video_register_device(usbvision->vdev, VFL_TYPE_GRABBER, video_nr) < 0)
1377 goto err_exit;
1378 printk(KERN_INFO "USBVision[%d]: registered USBVision Video device %s [v4l2]\n",
1379 usbvision->nr, video_device_node_name(usbvision->vdev));
1380
1381 /* Radio Device: */
1382 if (usbvision_device_data[usbvision->dev_model].radio) {
1383 /* usbvision has radio */
1384 usbvision->rdev = usbvision_vdev_init(usbvision,
1385 &usbvision_radio_template,
1386 "USBVision Radio");
1387 if (usbvision->rdev == NULL)
1388 goto err_exit;
1389 if (video_register_device(usbvision->rdev, VFL_TYPE_RADIO, radio_nr) < 0)
1390 goto err_exit;
1391 printk(KERN_INFO "USBVision[%d]: registered USBVision Radio device %s [v4l2]\n",
1392 usbvision->nr, video_device_node_name(usbvision->rdev));
1393 }
1394 /* all done */
1395 return 0;
1396
1397 err_exit:
1398 dev_err(&usbvision->dev->dev,
1399 "USBVision[%d]: video_register_device() failed\n",
1400 usbvision->nr);
1401 usbvision_unregister_video(usbvision);
1402 return -1;
1403 }
1404
1405 /*
1406 * usbvision_alloc()
1407 *
1408 * This code allocates the struct usb_usbvision.
1409 * It is filled with default values.
1410 *
1411 * Returns NULL on error, a pointer to usb_usbvision else.
1412 *
1413 */
1414 static struct usb_usbvision *usbvision_alloc(struct usb_device *dev,
1415 struct usb_interface *intf)
1416 {
1417 struct usb_usbvision *usbvision;
1418
1419 usbvision = kzalloc(sizeof(struct usb_usbvision), GFP_KERNEL);
1420 if (usbvision == NULL)
1421 return NULL;
1422
1423 usbvision->dev = dev;
1424 if (v4l2_device_register(&intf->dev, &usbvision->v4l2_dev))
1425 goto err_free;
1426
1427 mutex_init(&usbvision->v4l2_lock);
1428
1429 /* prepare control urb for control messages during interrupts */
1430 usbvision->ctrl_urb = usb_alloc_urb(USBVISION_URB_FRAMES, GFP_KERNEL);
1431 if (usbvision->ctrl_urb == NULL)
1432 goto err_unreg;
1433 init_waitqueue_head(&usbvision->ctrl_urb_wq);
1434
1435 usbvision_init_power_off_timer(usbvision);
1436
1437 return usbvision;
1438
1439 err_unreg:
1440 v4l2_device_unregister(&usbvision->v4l2_dev);
1441 err_free:
1442 kfree(usbvision);
1443 return NULL;
1444 }
1445
1446 /*
1447 * usbvision_release()
1448 *
1449 * This code does final release of struct usb_usbvision. This happens
1450 * after the device is disconnected -and- all clients closed their files.
1451 *
1452 */
1453 static void usbvision_release(struct usb_usbvision *usbvision)
1454 {
1455 PDEBUG(DBG_PROBE, "");
1456
1457 usbvision_reset_power_off_timer(usbvision);
1458
1459 usbvision->initialized = 0;
1460
1461 usbvision_remove_sysfs(usbvision->vdev);
1462 usbvision_unregister_video(usbvision);
1463 kfree(usbvision->alt_max_pkt_size);
1464
1465 usb_free_urb(usbvision->ctrl_urb);
1466
1467 v4l2_device_unregister(&usbvision->v4l2_dev);
1468 kfree(usbvision);
1469
1470 PDEBUG(DBG_PROBE, "success");
1471 }
1472
1473
1474 /*********************** usb interface **********************************/
1475
1476 static void usbvision_configure_video(struct usb_usbvision *usbvision)
1477 {
1478 int model;
1479
1480 if (usbvision == NULL)
1481 return;
1482
1483 model = usbvision->dev_model;
1484 usbvision->palette = usbvision_v4l2_format[2]; /* V4L2_PIX_FMT_RGB24; */
1485
1486 if (usbvision_device_data[usbvision->dev_model].vin_reg2_override) {
1487 usbvision->vin_reg2_preset =
1488 usbvision_device_data[usbvision->dev_model].vin_reg2;
1489 } else {
1490 usbvision->vin_reg2_preset = 0;
1491 }
1492
1493 usbvision->tvnorm_id = usbvision_device_data[model].video_norm;
1494
1495 usbvision->video_inputs = usbvision_device_data[model].video_channels;
1496 usbvision->ctl_input = 0;
1497
1498 /* This should be here to make i2c clients to be able to register */
1499 /* first switch off audio */
1500 if (usbvision_device_data[model].audio_channels > 0)
1501 usbvision_audio_off(usbvision);
1502 if (!power_on_at_open) {
1503 /* and then power up the noisy tuner */
1504 usbvision_power_on(usbvision);
1505 usbvision_i2c_register(usbvision);
1506 }
1507 }
1508
1509 /*
1510 * usbvision_probe()
1511 *
1512 * This procedure queries device descriptor and accepts the interface
1513 * if it looks like USBVISION video device
1514 *
1515 */
1516 static int usbvision_probe(struct usb_interface *intf,
1517 const struct usb_device_id *devid)
1518 {
1519 struct usb_device *dev = usb_get_dev(interface_to_usbdev(intf));
1520 struct usb_interface *uif;
1521 __u8 ifnum = intf->altsetting->desc.bInterfaceNumber;
1522 const struct usb_host_interface *interface;
1523 struct usb_usbvision *usbvision = NULL;
1524 const struct usb_endpoint_descriptor *endpoint;
1525 int model, i;
1526
1527 PDEBUG(DBG_PROBE, "VID=%#04x, PID=%#04x, ifnum=%u",
1528 dev->descriptor.idVendor,
1529 dev->descriptor.idProduct, ifnum);
1530
1531 model = devid->driver_info;
1532 if (model < 0 || model >= usbvision_device_data_size) {
1533 PDEBUG(DBG_PROBE, "model out of bounds %d", model);
1534 return -ENODEV;
1535 }
1536 printk(KERN_INFO "%s: %s found\n", __func__,
1537 usbvision_device_data[model].model_string);
1538
1539 if (usbvision_device_data[model].interface >= 0)
1540 interface = &dev->actconfig->interface[usbvision_device_data[model].interface]->altsetting[0];
1541 else
1542 interface = &dev->actconfig->interface[ifnum]->altsetting[0];
1543 endpoint = &interface->endpoint[1].desc;
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 return -ENODEV;
1550 }
1551 if (usb_endpoint_dir_out(endpoint)) {
1552 dev_err(&intf->dev, "%s: interface %d. has ISO OUT endpoint!\n",
1553 __func__, ifnum);
1554 return -ENODEV;
1555 }
1556
1557 usbvision = usbvision_alloc(dev, intf);
1558 if (usbvision == NULL) {
1559 dev_err(&intf->dev, "%s: couldn't allocate USBVision struct\n", __func__);
1560 return -ENOMEM;
1561 }
1562
1563 if (dev->descriptor.bNumConfigurations > 1)
1564 usbvision->bridge_type = BRIDGE_NT1004;
1565 else if (model == DAZZLE_DVC_90_REV_1_SECAM)
1566 usbvision->bridge_type = BRIDGE_NT1005;
1567 else
1568 usbvision->bridge_type = BRIDGE_NT1003;
1569 PDEBUG(DBG_PROBE, "bridge_type %d", usbvision->bridge_type);
1570
1571 /* compute alternate max packet sizes */
1572 uif = dev->actconfig->interface[0];
1573
1574 usbvision->num_alt = uif->num_altsetting;
1575 PDEBUG(DBG_PROBE, "Alternate settings: %i", usbvision->num_alt);
1576 usbvision->alt_max_pkt_size = kmalloc(32 * usbvision->num_alt, GFP_KERNEL);
1577 if (usbvision->alt_max_pkt_size == NULL) {
1578 dev_err(&intf->dev, "usbvision: out of memory!\n");
1579 usbvision_release(usbvision);
1580 return -ENOMEM;
1581 }
1582
1583 for (i = 0; i < usbvision->num_alt; i++) {
1584 u16 tmp = le16_to_cpu(uif->altsetting[i].endpoint[1].desc.
1585 wMaxPacketSize);
1586 usbvision->alt_max_pkt_size[i] =
1587 (tmp & 0x07ff) * (((tmp & 0x1800) >> 11) + 1);
1588 PDEBUG(DBG_PROBE, "Alternate setting %i, max size= %i", i,
1589 usbvision->alt_max_pkt_size[i]);
1590 }
1591
1592
1593 usbvision->nr = usbvision_nr++;
1594
1595 usbvision->have_tuner = usbvision_device_data[model].tuner;
1596 if (usbvision->have_tuner)
1597 usbvision->tuner_type = usbvision_device_data[model].tuner_type;
1598
1599 usbvision->dev_model = model;
1600 usbvision->remove_pending = 0;
1601 usbvision->iface = ifnum;
1602 usbvision->iface_alt = 0;
1603 usbvision->video_endp = endpoint->bEndpointAddress;
1604 usbvision->isoc_packet_size = 0;
1605 usbvision->usb_bandwidth = 0;
1606 usbvision->user = 0;
1607 usbvision->streaming = stream_off;
1608 usbvision_configure_video(usbvision);
1609 usbvision_register_video(usbvision);
1610
1611 usbvision_create_sysfs(usbvision->vdev);
1612
1613 PDEBUG(DBG_PROBE, "success");
1614 return 0;
1615 }
1616
1617
1618 /*
1619 * usbvision_disconnect()
1620 *
1621 * This procedure stops all driver activity, deallocates interface-private
1622 * structure (pointed by 'ptr') and after that driver should be removable
1623 * with no ill consequences.
1624 *
1625 */
1626 static void usbvision_disconnect(struct usb_interface *intf)
1627 {
1628 struct usb_usbvision *usbvision = to_usbvision(usb_get_intfdata(intf));
1629
1630 PDEBUG(DBG_PROBE, "");
1631
1632 if (usbvision == NULL) {
1633 pr_err("%s: usb_get_intfdata() failed\n", __func__);
1634 return;
1635 }
1636
1637 mutex_lock(&usbvision->v4l2_lock);
1638
1639 /* At this time we ask to cancel outstanding URBs */
1640 usbvision_stop_isoc(usbvision);
1641
1642 v4l2_device_disconnect(&usbvision->v4l2_dev);
1643
1644 if (usbvision->power) {
1645 usbvision_i2c_unregister(usbvision);
1646 usbvision_power_off(usbvision);
1647 }
1648 usbvision->remove_pending = 1; /* Now all ISO data will be ignored */
1649
1650 usb_put_dev(usbvision->dev);
1651 usbvision->dev = NULL; /* USB device is no more */
1652
1653 mutex_unlock(&usbvision->v4l2_lock);
1654
1655 if (usbvision->user) {
1656 printk(KERN_INFO "%s: In use, disconnect pending\n",
1657 __func__);
1658 wake_up_interruptible(&usbvision->wait_frame);
1659 wake_up_interruptible(&usbvision->wait_stream);
1660 } else {
1661 usbvision_release(usbvision);
1662 }
1663
1664 PDEBUG(DBG_PROBE, "success");
1665 }
1666
1667 static struct usb_driver usbvision_driver = {
1668 .name = "usbvision",
1669 .id_table = usbvision_table,
1670 .probe = usbvision_probe,
1671 .disconnect = usbvision_disconnect,
1672 };
1673
1674 /*
1675 * usbvision_init()
1676 *
1677 * This code is run to initialize the driver.
1678 *
1679 */
1680 static int __init usbvision_init(void)
1681 {
1682 int err_code;
1683
1684 PDEBUG(DBG_PROBE, "");
1685
1686 PDEBUG(DBG_IO, "IO debugging is enabled [video]");
1687 PDEBUG(DBG_PROBE, "PROBE debugging is enabled [video]");
1688 PDEBUG(DBG_MMAP, "MMAP debugging is enabled [video]");
1689
1690 /* disable planar mode support unless compression enabled */
1691 if (isoc_mode != ISOC_MODE_COMPRESS) {
1692 /* FIXME : not the right way to set supported flag */
1693 usbvision_v4l2_format[6].supported = 0; /* V4L2_PIX_FMT_YVU420 */
1694 usbvision_v4l2_format[7].supported = 0; /* V4L2_PIX_FMT_YUV422P */
1695 }
1696
1697 err_code = usb_register(&usbvision_driver);
1698
1699 if (err_code == 0) {
1700 printk(KERN_INFO DRIVER_DESC " : " USBVISION_VERSION_STRING "\n");
1701 PDEBUG(DBG_PROBE, "success");
1702 }
1703 return err_code;
1704 }
1705
1706 static void __exit usbvision_exit(void)
1707 {
1708 PDEBUG(DBG_PROBE, "");
1709
1710 usb_deregister(&usbvision_driver);
1711 PDEBUG(DBG_PROBE, "success");
1712 }
1713
1714 module_init(usbvision_init);
1715 module_exit(usbvision_exit);
1716
1717 /*
1718 * Overrides for Emacs so that we follow Linus's tabbing style.
1719 * ---------------------------------------------------------------------------
1720 * Local variables:
1721 * c-basic-offset: 8
1722 * End:
1723 */
Linux with added FPC-III support