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Merge branch 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...
[cris-mirror.git] / drivers / media / usb / usbvision / usbvision-video.c
blob0f5954a1fea25a1e55beef6abaa6c35f18a5fc7b
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 * Let's call the version 0.... until compression decoding is completely
21 * implemented.
22 *
23 * This driver is written by Jose Ignacio Gijon and Joerg Heckenbach.
24 * It was based on USB CPiA driver written by Peter Pregler,
25 * Scott J. Bertin and Johannes Erdfelt
26 * Ideas are taken from bttv driver by Ralph Metzler, Marcus Metzler &
27 * Gerd Knorr and zoran 36120/36125 driver by Pauline Middelink
28 * Updates to driver completed by Dwaine P. Garden
29 *
30 *
31 * TODO:
32 * - use submit_urb for all setup packets
33 * - Fix memory settings for nt1004. It is 4 times as big as the
34 * nt1003 memory.
35 * - Add audio on endpoint 3 for nt1004 chip.
36 * Seems impossible, needs a codec interface. Which one?
37 * - Clean up the driver.
38 * - optimization for performance.
39 * - Add Videotext capability (VBI). Working on it.....
40 * - Check audio for other devices
41 *
42 */
43
44 #include <linux/kernel.h>
45 #include <linux/list.h>
46 #include <linux/timer.h>
47 #include <linux/slab.h>
48 #include <linux/mm.h>
49 #include <linux/highmem.h>
50 #include <linux/vmalloc.h>
51 #include <linux/module.h>
52 #include <linux/init.h>
53 #include <linux/spinlock.h>
54 #include <linux/io.h>
55 #include <linux/videodev2.h>
56 #include <linux/i2c.h>
57
58 #include <media/i2c/saa7115.h>
59 #include <media/v4l2-common.h>
60 #include <media/v4l2-ioctl.h>
61 #include <media/v4l2-event.h>
62 #include <media/tuner.h>
63
64 #include <linux/workqueue.h>
65
66 #include "usbvision.h"
67 #include "usbvision-cards.h"
68
69 #define DRIVER_AUTHOR \
70 "Joerg Heckenbach <joerg@heckenbach-aw.de>, " \
71 "Dwaine Garden <DwaineGarden@rogers.com>"
72 #define DRIVER_NAME "usbvision"
73 #define DRIVER_ALIAS "USBVision"
74 #define DRIVER_DESC "USBVision USB Video Device Driver for Linux"
75 #define USBVISION_VERSION_STRING "0.9.11"
76
77 #define ENABLE_HEXDUMP 0 /* Enable if you need it */
78
79
80 #ifdef USBVISION_DEBUG
81 #define PDEBUG(level, fmt, args...) { \
82 if (video_debug & (level)) \
83 printk(KERN_INFO KBUILD_MODNAME ":[%s:%d] " fmt, \
84 __func__, __LINE__ , ## args); \
85 }
86 #else
87 #define PDEBUG(level, fmt, args...) do {} while (0)
88 #endif
89
90 #define DBG_IO (1 << 1)
91 #define DBG_PROBE (1 << 2)
92 #define DBG_MMAP (1 << 3)
93
94 /* String operations */
95 #define rmspace(str) while (*str == ' ') str++;
96 #define goto2next(str) while (*str != ' ') str++; while (*str == ' ') str++;
97
98
99 /* sequential number of usbvision device */
100 static int usbvision_nr;
101
102 static struct usbvision_v4l2_format_st usbvision_v4l2_format[] = {
103 { 1, 1, 8, V4L2_PIX_FMT_GREY , "GREY" },
104 { 1, 2, 16, V4L2_PIX_FMT_RGB565 , "RGB565" },
105 { 1, 3, 24, V4L2_PIX_FMT_RGB24 , "RGB24" },
106 { 1, 4, 32, V4L2_PIX_FMT_RGB32 , "RGB32" },
107 { 1, 2, 16, V4L2_PIX_FMT_RGB555 , "RGB555" },
108 { 1, 2, 16, V4L2_PIX_FMT_YUYV , "YUV422" },
109 { 1, 2, 12, V4L2_PIX_FMT_YVU420 , "YUV420P" }, /* 1.5 ! */
110 { 1, 2, 16, V4L2_PIX_FMT_YUV422P , "YUV422P" }
111 };
112
113 /* Function prototypes */
114 static void usbvision_release(struct usb_usbvision *usbvision);
115
116 /* Default initialization of device driver parameters */
117 /* Set the default format for ISOC endpoint */
118 static int isoc_mode = ISOC_MODE_COMPRESS;
119 /* Set the default Debug Mode of the device driver */
120 static int video_debug;
121 /* Sequential Number of Video Device */
122 static int video_nr = -1;
123 /* Sequential Number of Radio Device */
124 static int radio_nr = -1;
125
126 /* Grab parameters for the device driver */
127
128 /* Showing parameters under SYSFS */
129 module_param(isoc_mode, int, 0444);
130 module_param(video_debug, int, 0444);
131 module_param(video_nr, int, 0444);
132 module_param(radio_nr, int, 0444);
133
134 MODULE_PARM_DESC(isoc_mode, " Set the default format for ISOC endpoint. Default: 0x60 (Compression On)");
135 MODULE_PARM_DESC(video_debug, " Set the default Debug Mode of the device driver. Default: 0 (Off)");
136 MODULE_PARM_DESC(video_nr, "Set video device number (/dev/videoX). Default: -1 (autodetect)");
137 MODULE_PARM_DESC(radio_nr, "Set radio device number (/dev/radioX). Default: -1 (autodetect)");
138
139
140 /* Misc stuff */
141 MODULE_AUTHOR(DRIVER_AUTHOR);
142 MODULE_DESCRIPTION(DRIVER_DESC);
143 MODULE_LICENSE("GPL");
144 MODULE_VERSION(USBVISION_VERSION_STRING);
145 MODULE_ALIAS(DRIVER_ALIAS);
146
147
148 /*****************************************************************************/
149 /* SYSFS Code - Copied from the stv680.c usb module. */
150 /* Device information is located at /sys/class/video4linux/video0 */
151 /* Device parameters information is located at /sys/module/usbvision */
152 /* Device USB Information is located at */
153 /* /sys/bus/usb/drivers/USBVision Video Grabber */
154 /*****************************************************************************/
155
156 #define YES_NO(x) ((x) ? "Yes" : "No")
157
158 static inline struct usb_usbvision *cd_to_usbvision(struct device *cd)
159 {
160 struct video_device *vdev = to_video_device(cd);
161 return video_get_drvdata(vdev);
162 }
163
164 static ssize_t show_version(struct device *cd,
165 struct device_attribute *attr, char *buf)
166 {
167 return sprintf(buf, "%s\n", USBVISION_VERSION_STRING);
168 }
169 static DEVICE_ATTR(version, S_IRUGO, show_version, NULL);
170
171 static ssize_t show_model(struct device *cd,
172 struct device_attribute *attr, char *buf)
173 {
174 struct video_device *vdev = to_video_device(cd);
175 struct usb_usbvision *usbvision = video_get_drvdata(vdev);
176 return sprintf(buf, "%s\n",
177 usbvision_device_data[usbvision->dev_model].model_string);
178 }
179 static DEVICE_ATTR(model, S_IRUGO, show_model, NULL);
180
181 static ssize_t show_hue(struct device *cd,
182 struct device_attribute *attr, char *buf)
183 {
184 struct video_device *vdev = to_video_device(cd);
185 struct usb_usbvision *usbvision = video_get_drvdata(vdev);
186 s32 val = v4l2_ctrl_g_ctrl(v4l2_ctrl_find(&usbvision->hdl,
187 V4L2_CID_HUE));
188
189 return sprintf(buf, "%d\n", val);
190 }
191 static DEVICE_ATTR(hue, S_IRUGO, show_hue, NULL);
192
193 static ssize_t show_contrast(struct device *cd,
194 struct device_attribute *attr, char *buf)
195 {
196 struct video_device *vdev = to_video_device(cd);
197 struct usb_usbvision *usbvision = video_get_drvdata(vdev);
198 s32 val = v4l2_ctrl_g_ctrl(v4l2_ctrl_find(&usbvision->hdl,
199 V4L2_CID_CONTRAST));
200
201 return sprintf(buf, "%d\n", val);
202 }
203 static DEVICE_ATTR(contrast, S_IRUGO, show_contrast, NULL);
204
205 static ssize_t show_brightness(struct device *cd,
206 struct device_attribute *attr, char *buf)
207 {
208 struct video_device *vdev = to_video_device(cd);
209 struct usb_usbvision *usbvision = video_get_drvdata(vdev);
210 s32 val = v4l2_ctrl_g_ctrl(v4l2_ctrl_find(&usbvision->hdl,
211 V4L2_CID_BRIGHTNESS));
212
213 return sprintf(buf, "%d\n", val);
214 }
215 static DEVICE_ATTR(brightness, S_IRUGO, show_brightness, NULL);
216
217 static ssize_t show_saturation(struct device *cd,
218 struct device_attribute *attr, char *buf)
219 {
220 struct video_device *vdev = to_video_device(cd);
221 struct usb_usbvision *usbvision = video_get_drvdata(vdev);
222 s32 val = v4l2_ctrl_g_ctrl(v4l2_ctrl_find(&usbvision->hdl,
223 V4L2_CID_SATURATION));
224
225 return sprintf(buf, "%d\n", val);
226 }
227 static DEVICE_ATTR(saturation, S_IRUGO, show_saturation, NULL);
228
229 static ssize_t show_streaming(struct device *cd,
230 struct device_attribute *attr, char *buf)
231 {
232 struct video_device *vdev = to_video_device(cd);
233 struct usb_usbvision *usbvision = video_get_drvdata(vdev);
234 return sprintf(buf, "%s\n",
235 YES_NO(usbvision->streaming == stream_on ? 1 : 0));
236 }
237 static DEVICE_ATTR(streaming, S_IRUGO, show_streaming, NULL);
238
239 static ssize_t show_compression(struct device *cd,
240 struct device_attribute *attr, char *buf)
241 {
242 struct video_device *vdev = to_video_device(cd);
243 struct usb_usbvision *usbvision = video_get_drvdata(vdev);
244 return sprintf(buf, "%s\n",
245 YES_NO(usbvision->isoc_mode == ISOC_MODE_COMPRESS));
246 }
247 static DEVICE_ATTR(compression, S_IRUGO, show_compression, NULL);
248
249 static ssize_t show_device_bridge(struct device *cd,
250 struct device_attribute *attr, char *buf)
251 {
252 struct video_device *vdev = to_video_device(cd);
253 struct usb_usbvision *usbvision = video_get_drvdata(vdev);
254 return sprintf(buf, "%d\n", usbvision->bridge_type);
255 }
256 static DEVICE_ATTR(bridge, S_IRUGO, show_device_bridge, NULL);
257
258 static void usbvision_create_sysfs(struct video_device *vdev)
259 {
260 int res;
261
262 if (!vdev)
263 return;
264 do {
265 res = device_create_file(&vdev->dev, &dev_attr_version);
266 if (res < 0)
267 break;
268 res = device_create_file(&vdev->dev, &dev_attr_model);
269 if (res < 0)
270 break;
271 res = device_create_file(&vdev->dev, &dev_attr_hue);
272 if (res < 0)
273 break;
274 res = device_create_file(&vdev->dev, &dev_attr_contrast);
275 if (res < 0)
276 break;
277 res = device_create_file(&vdev->dev, &dev_attr_brightness);
278 if (res < 0)
279 break;
280 res = device_create_file(&vdev->dev, &dev_attr_saturation);
281 if (res < 0)
282 break;
283 res = device_create_file(&vdev->dev, &dev_attr_streaming);
284 if (res < 0)
285 break;
286 res = device_create_file(&vdev->dev, &dev_attr_compression);
287 if (res < 0)
288 break;
289 res = device_create_file(&vdev->dev, &dev_attr_bridge);
290 if (res >= 0)
291 return;
292 } while (0);
293
294 dev_err(&vdev->dev, "%s error: %d\n", __func__, res);
295 }
296
297 static void usbvision_remove_sysfs(struct video_device *vdev)
298 {
299 if (vdev) {
300 device_remove_file(&vdev->dev, &dev_attr_version);
301 device_remove_file(&vdev->dev, &dev_attr_model);
302 device_remove_file(&vdev->dev, &dev_attr_hue);
303 device_remove_file(&vdev->dev, &dev_attr_contrast);
304 device_remove_file(&vdev->dev, &dev_attr_brightness);
305 device_remove_file(&vdev->dev, &dev_attr_saturation);
306 device_remove_file(&vdev->dev, &dev_attr_streaming);
307 device_remove_file(&vdev->dev, &dev_attr_compression);
308 device_remove_file(&vdev->dev, &dev_attr_bridge);
309 }
310 }
311
312 /*
313 * usbvision_open()
314 *
315 * This is part of Video 4 Linux API. The driver can be opened by one
316 * client only (checks internal counter 'usbvision->user'). The procedure
317 * then allocates buffers needed for video processing.
318 *
319 */
320 static int usbvision_v4l2_open(struct file *file)
321 {
322 struct usb_usbvision *usbvision = video_drvdata(file);
323 int err_code = 0;
324
325 PDEBUG(DBG_IO, "open");
326
327 if (mutex_lock_interruptible(&usbvision->v4l2_lock))
328 return -ERESTARTSYS;
329
330 if (usbvision->user) {
331 err_code = -EBUSY;
332 } else {
333 err_code = v4l2_fh_open(file);
334 if (err_code)
335 goto unlock;
336
337 /* Allocate memory for the scratch ring buffer */
338 err_code = usbvision_scratch_alloc(usbvision);
339 if (isoc_mode == ISOC_MODE_COMPRESS) {
340 /* Allocate intermediate decompression buffers
341 only if needed */
342 err_code = usbvision_decompress_alloc(usbvision);
343 }
344 if (err_code) {
345 /* Deallocate all buffers if trouble */
346 usbvision_scratch_free(usbvision);
347 usbvision_decompress_free(usbvision);
348 }
349 }
350
351 /* If so far no errors then we shall start the camera */
352 if (!err_code) {
353 /* Send init sequence only once, it's large! */
354 if (!usbvision->initialized) {
355 int setup_ok = 0;
356 setup_ok = usbvision_setup(usbvision, isoc_mode);
357 if (setup_ok)
358 usbvision->initialized = 1;
359 else
360 err_code = -EBUSY;
361 }
362
363 if (!err_code) {
364 usbvision_begin_streaming(usbvision);
365 err_code = usbvision_init_isoc(usbvision);
366 /* device must be initialized before isoc transfer */
367 usbvision_muxsel(usbvision, 0);
368
369 /* prepare queues */
370 usbvision_empty_framequeues(usbvision);
371 usbvision->user++;
372 }
373 }
374
375 unlock:
376 mutex_unlock(&usbvision->v4l2_lock);
377
378 PDEBUG(DBG_IO, "success");
379 return err_code;
380 }
381
382 /*
383 * usbvision_v4l2_close()
384 *
385 * This is part of Video 4 Linux API. The procedure
386 * stops streaming and deallocates all buffers that were earlier
387 * allocated in usbvision_v4l2_open().
388 *
389 */
390 static int usbvision_v4l2_close(struct file *file)
391 {
392 struct usb_usbvision *usbvision = video_drvdata(file);
393
394 PDEBUG(DBG_IO, "close");
395
396 mutex_lock(&usbvision->v4l2_lock);
397 usbvision_audio_off(usbvision);
398 usbvision_restart_isoc(usbvision);
399 usbvision_stop_isoc(usbvision);
400
401 usbvision_decompress_free(usbvision);
402 usbvision_frames_free(usbvision);
403 usbvision_empty_framequeues(usbvision);
404 usbvision_scratch_free(usbvision);
405
406 usbvision->user--;
407 mutex_unlock(&usbvision->v4l2_lock);
408
409 if (usbvision->remove_pending) {
410 printk(KERN_INFO "%s: Final disconnect\n", __func__);
411 usbvision_release(usbvision);
412 return 0;
413 }
414
415 PDEBUG(DBG_IO, "success");
416 return v4l2_fh_release(file);
417 }
418
419
420 /*
421 * usbvision_ioctl()
422 *
423 * This is part of Video 4 Linux API. The procedure handles ioctl() calls.
424 *
425 */
426 #ifdef CONFIG_VIDEO_ADV_DEBUG
427 static int vidioc_g_register(struct file *file, void *priv,
428 struct v4l2_dbg_register *reg)
429 {
430 struct usb_usbvision *usbvision = video_drvdata(file);
431 int err_code;
432
433 /* NT100x has a 8-bit register space */
434 err_code = usbvision_read_reg(usbvision, reg->reg&0xff);
435 if (err_code < 0) {
436 dev_err(&usbvision->vdev.dev,
437 "%s: VIDIOC_DBG_G_REGISTER failed: error %d\n",
438 __func__, err_code);
439 return err_code;
440 }
441 reg->val = err_code;
442 reg->size = 1;
443 return 0;
444 }
445
446 static int vidioc_s_register(struct file *file, void *priv,
447 const struct v4l2_dbg_register *reg)
448 {
449 struct usb_usbvision *usbvision = video_drvdata(file);
450 int err_code;
451
452 /* NT100x has a 8-bit register space */
453 err_code = usbvision_write_reg(usbvision, reg->reg & 0xff, reg->val);
454 if (err_code < 0) {
455 dev_err(&usbvision->vdev.dev,
456 "%s: VIDIOC_DBG_S_REGISTER failed: error %d\n",
457 __func__, err_code);
458 return err_code;
459 }
460 return 0;
461 }
462 #endif
463
464 static int vidioc_querycap(struct file *file, void *priv,
465 struct v4l2_capability *vc)
466 {
467 struct usb_usbvision *usbvision = video_drvdata(file);
468 struct video_device *vdev = video_devdata(file);
469
470 strlcpy(vc->driver, "USBVision", sizeof(vc->driver));
471 strlcpy(vc->card,
472 usbvision_device_data[usbvision->dev_model].model_string,
473 sizeof(vc->card));
474 usb_make_path(usbvision->dev, vc->bus_info, sizeof(vc->bus_info));
475 vc->device_caps = usbvision->have_tuner ? V4L2_CAP_TUNER : 0;
476 if (vdev->vfl_type == VFL_TYPE_GRABBER)
477 vc->device_caps |= V4L2_CAP_VIDEO_CAPTURE |
478 V4L2_CAP_READWRITE | V4L2_CAP_STREAMING;
479 else
480 vc->device_caps |= V4L2_CAP_RADIO;
481
482 vc->capabilities = vc->device_caps | V4L2_CAP_VIDEO_CAPTURE |
483 V4L2_CAP_READWRITE | V4L2_CAP_STREAMING | V4L2_CAP_DEVICE_CAPS;
484 if (usbvision_device_data[usbvision->dev_model].radio)
485 vc->capabilities |= V4L2_CAP_RADIO;
486 return 0;
487 }
488
489 static int vidioc_enum_input(struct file *file, void *priv,
490 struct v4l2_input *vi)
491 {
492 struct usb_usbvision *usbvision = video_drvdata(file);
493 int chan;
494
495 if (vi->index >= usbvision->video_inputs)
496 return -EINVAL;
497 if (usbvision->have_tuner)
498 chan = vi->index;
499 else
500 chan = vi->index + 1; /* skip Television string*/
501
502 /* Determine the requested input characteristics
503 specific for each usbvision card model */
504 switch (chan) {
505 case 0:
506 if (usbvision_device_data[usbvision->dev_model].video_channels == 4) {
507 strcpy(vi->name, "White Video Input");
508 } else {
509 strcpy(vi->name, "Television");
510 vi->type = V4L2_INPUT_TYPE_TUNER;
511 vi->tuner = chan;
512 vi->std = USBVISION_NORMS;
513 }
514 break;
515 case 1:
516 vi->type = V4L2_INPUT_TYPE_CAMERA;
517 if (usbvision_device_data[usbvision->dev_model].video_channels == 4)
518 strcpy(vi->name, "Green Video Input");
519 else
520 strcpy(vi->name, "Composite Video Input");
521 vi->std = USBVISION_NORMS;
522 break;
523 case 2:
524 vi->type = V4L2_INPUT_TYPE_CAMERA;
525 if (usbvision_device_data[usbvision->dev_model].video_channels == 4)
526 strcpy(vi->name, "Yellow Video Input");
527 else
528 strcpy(vi->name, "S-Video Input");
529 vi->std = USBVISION_NORMS;
530 break;
531 case 3:
532 vi->type = V4L2_INPUT_TYPE_CAMERA;
533 strcpy(vi->name, "Red Video Input");
534 vi->std = USBVISION_NORMS;
535 break;
536 }
537 return 0;
538 }
539
540 static int vidioc_g_input(struct file *file, void *priv, unsigned int *input)
541 {
542 struct usb_usbvision *usbvision = video_drvdata(file);
543
544 *input = usbvision->ctl_input;
545 return 0;
546 }
547
548 static int vidioc_s_input(struct file *file, void *priv, unsigned int input)
549 {
550 struct usb_usbvision *usbvision = video_drvdata(file);
551
552 if (input >= usbvision->video_inputs)
553 return -EINVAL;
554
555 usbvision_muxsel(usbvision, input);
556 usbvision_set_input(usbvision);
557 usbvision_set_output(usbvision,
558 usbvision->curwidth,
559 usbvision->curheight);
560 return 0;
561 }
562
563 static int vidioc_s_std(struct file *file, void *priv, v4l2_std_id id)
564 {
565 struct usb_usbvision *usbvision = video_drvdata(file);
566
567 usbvision->tvnorm_id = id;
568
569 call_all(usbvision, video, s_std, usbvision->tvnorm_id);
570 /* propagate the change to the decoder */
571 usbvision_muxsel(usbvision, usbvision->ctl_input);
572
573 return 0;
574 }
575
576 static int vidioc_g_std(struct file *file, void *priv, v4l2_std_id *id)
577 {
578 struct usb_usbvision *usbvision = video_drvdata(file);
579
580 *id = usbvision->tvnorm_id;
581 return 0;
582 }
583
584 static int vidioc_g_tuner(struct file *file, void *priv,
585 struct v4l2_tuner *vt)
586 {
587 struct usb_usbvision *usbvision = video_drvdata(file);
588
589 if (vt->index) /* Only tuner 0 */
590 return -EINVAL;
591 if (vt->type == V4L2_TUNER_RADIO)
592 strcpy(vt->name, "Radio");
593 else
594 strcpy(vt->name, "Television");
595
596 /* Let clients fill in the remainder of this struct */
597 call_all(usbvision, tuner, g_tuner, vt);
598
599 return 0;
600 }
601
602 static int vidioc_s_tuner(struct file *file, void *priv,
603 const struct v4l2_tuner *vt)
604 {
605 struct usb_usbvision *usbvision = video_drvdata(file);
606
607 /* Only one tuner for now */
608 if (vt->index)
609 return -EINVAL;
610 /* let clients handle this */
611 call_all(usbvision, tuner, s_tuner, vt);
612
613 return 0;
614 }
615
616 static int vidioc_g_frequency(struct file *file, void *priv,
617 struct v4l2_frequency *freq)
618 {
619 struct usb_usbvision *usbvision = video_drvdata(file);
620
621 /* Only one tuner */
622 if (freq->tuner)
623 return -EINVAL;
624 if (freq->type == V4L2_TUNER_RADIO)
625 freq->frequency = usbvision->radio_freq;
626 else
627 freq->frequency = usbvision->tv_freq;
628
629 return 0;
630 }
631
632 static int vidioc_s_frequency(struct file *file, void *priv,
633 const struct v4l2_frequency *freq)
634 {
635 struct usb_usbvision *usbvision = video_drvdata(file);
636 struct v4l2_frequency new_freq = *freq;
637
638 /* Only one tuner for now */
639 if (freq->tuner)
640 return -EINVAL;
641
642 call_all(usbvision, tuner, s_frequency, freq);
643 call_all(usbvision, tuner, g_frequency, &new_freq);
644 if (freq->type == V4L2_TUNER_RADIO)
645 usbvision->radio_freq = new_freq.frequency;
646 else
647 usbvision->tv_freq = new_freq.frequency;
648
649 return 0;
650 }
651
652 static int vidioc_reqbufs(struct file *file,
653 void *priv, struct v4l2_requestbuffers *vr)
654 {
655 struct usb_usbvision *usbvision = video_drvdata(file);
656 int ret;
657
658 RESTRICT_TO_RANGE(vr->count, 1, USBVISION_NUMFRAMES);
659
660 /* Check input validity:
661 the user must do a VIDEO CAPTURE and MMAP method. */
662 if (vr->memory != V4L2_MEMORY_MMAP)
663 return -EINVAL;
664
665 if (usbvision->streaming == stream_on) {
666 ret = usbvision_stream_interrupt(usbvision);
667 if (ret)
668 return ret;
669 }
670
671 usbvision_frames_free(usbvision);
672 usbvision_empty_framequeues(usbvision);
673 vr->count = usbvision_frames_alloc(usbvision, vr->count);
674
675 usbvision->cur_frame = NULL;
676
677 return 0;
678 }
679
680 static int vidioc_querybuf(struct file *file,
681 void *priv, struct v4l2_buffer *vb)
682 {
683 struct usb_usbvision *usbvision = video_drvdata(file);
684 struct usbvision_frame *frame;
685
686 /* FIXME : must control
687 that buffers are mapped (VIDIOC_REQBUFS has been called) */
688 if (vb->index >= usbvision->num_frames)
689 return -EINVAL;
690 /* Updating the corresponding frame state */
691 vb->flags = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC;
692 frame = &usbvision->frame[vb->index];
693 if (frame->grabstate >= frame_state_ready)
694 vb->flags |= V4L2_BUF_FLAG_QUEUED;
695 if (frame->grabstate >= frame_state_done)
696 vb->flags |= V4L2_BUF_FLAG_DONE;
697 if (frame->grabstate == frame_state_unused)
698 vb->flags |= V4L2_BUF_FLAG_MAPPED;
699 vb->memory = V4L2_MEMORY_MMAP;
700
701 vb->m.offset = vb->index * PAGE_ALIGN(usbvision->max_frame_size);
702
703 vb->memory = V4L2_MEMORY_MMAP;
704 vb->field = V4L2_FIELD_NONE;
705 vb->length = usbvision->curwidth *
706 usbvision->curheight *
707 usbvision->palette.bytes_per_pixel;
708 vb->timestamp = usbvision->frame[vb->index].timestamp;
709 vb->sequence = usbvision->frame[vb->index].sequence;
710 return 0;
711 }
712
713 static int vidioc_qbuf(struct file *file, void *priv, struct v4l2_buffer *vb)
714 {
715 struct usb_usbvision *usbvision = video_drvdata(file);
716 struct usbvision_frame *frame;
717 unsigned long lock_flags;
718
719 /* FIXME : works only on VIDEO_CAPTURE MODE, MMAP. */
720 if (vb->index >= usbvision->num_frames)
721 return -EINVAL;
722
723 frame = &usbvision->frame[vb->index];
724
725 if (frame->grabstate != frame_state_unused)
726 return -EAGAIN;
727
728 /* Mark it as ready and enqueue frame */
729 frame->grabstate = frame_state_ready;
730 frame->scanstate = scan_state_scanning;
731 frame->scanlength = 0; /* Accumulated in usbvision_parse_data() */
732
733 vb->flags &= ~V4L2_BUF_FLAG_DONE;
734
735 /* set v4l2_format index */
736 frame->v4l2_format = usbvision->palette;
737
738 spin_lock_irqsave(&usbvision->queue_lock, lock_flags);
739 list_add_tail(&usbvision->frame[vb->index].frame, &usbvision->inqueue);
740 spin_unlock_irqrestore(&usbvision->queue_lock, lock_flags);
741
742 return 0;
743 }
744
745 static int vidioc_dqbuf(struct file *file, void *priv, struct v4l2_buffer *vb)
746 {
747 struct usb_usbvision *usbvision = video_drvdata(file);
748 int ret;
749 struct usbvision_frame *f;
750 unsigned long lock_flags;
751
752 if (list_empty(&(usbvision->outqueue))) {
753 if (usbvision->streaming == stream_idle)
754 return -EINVAL;
755 ret = wait_event_interruptible
756 (usbvision->wait_frame,
757 !list_empty(&(usbvision->outqueue)));
758 if (ret)
759 return ret;
760 }
761
762 spin_lock_irqsave(&usbvision->queue_lock, lock_flags);
763 f = list_entry(usbvision->outqueue.next,
764 struct usbvision_frame, frame);
765 list_del(usbvision->outqueue.next);
766 spin_unlock_irqrestore(&usbvision->queue_lock, lock_flags);
767
768 f->grabstate = frame_state_unused;
769
770 vb->memory = V4L2_MEMORY_MMAP;
771 vb->flags = V4L2_BUF_FLAG_MAPPED |
772 V4L2_BUF_FLAG_QUEUED |
773 V4L2_BUF_FLAG_DONE |
774 V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC;
775 vb->index = f->index;
776 vb->sequence = f->sequence;
777 vb->timestamp = f->timestamp;
778 vb->field = V4L2_FIELD_NONE;
779 vb->bytesused = f->scanlength;
780
781 return 0;
782 }
783
784 static int vidioc_streamon(struct file *file, void *priv, enum v4l2_buf_type i)
785 {
786 struct usb_usbvision *usbvision = video_drvdata(file);
787
788 usbvision->streaming = stream_on;
789 call_all(usbvision, video, s_stream, 1);
790
791 return 0;
792 }
793
794 static int vidioc_streamoff(struct file *file,
795 void *priv, enum v4l2_buf_type type)
796 {
797 struct usb_usbvision *usbvision = video_drvdata(file);
798
799 if (type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
800 return -EINVAL;
801
802 if (usbvision->streaming == stream_on) {
803 usbvision_stream_interrupt(usbvision);
804 /* Stop all video streamings */
805 call_all(usbvision, video, s_stream, 0);
806 }
807 usbvision_empty_framequeues(usbvision);
808
809 return 0;
810 }
811
812 static int vidioc_enum_fmt_vid_cap(struct file *file, void *priv,
813 struct v4l2_fmtdesc *vfd)
814 {
815 if (vfd->index >= USBVISION_SUPPORTED_PALETTES - 1)
816 return -EINVAL;
817 strcpy(vfd->description, usbvision_v4l2_format[vfd->index].desc);
818 vfd->pixelformat = usbvision_v4l2_format[vfd->index].format;
819 return 0;
820 }
821
822 static int vidioc_g_fmt_vid_cap(struct file *file, void *priv,
823 struct v4l2_format *vf)
824 {
825 struct usb_usbvision *usbvision = video_drvdata(file);
826 vf->fmt.pix.width = usbvision->curwidth;
827 vf->fmt.pix.height = usbvision->curheight;
828 vf->fmt.pix.pixelformat = usbvision->palette.format;
829 vf->fmt.pix.bytesperline =
830 usbvision->curwidth * usbvision->palette.bytes_per_pixel;
831 vf->fmt.pix.sizeimage = vf->fmt.pix.bytesperline * usbvision->curheight;
832 vf->fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M;
833 vf->fmt.pix.field = V4L2_FIELD_NONE; /* Always progressive image */
834
835 return 0;
836 }
837
838 static int vidioc_try_fmt_vid_cap(struct file *file, void *priv,
839 struct v4l2_format *vf)
840 {
841 struct usb_usbvision *usbvision = video_drvdata(file);
842 int format_idx;
843
844 /* Find requested format in available ones */
845 for (format_idx = 0; format_idx < USBVISION_SUPPORTED_PALETTES; format_idx++) {
846 if (vf->fmt.pix.pixelformat ==
847 usbvision_v4l2_format[format_idx].format) {
848 usbvision->palette = usbvision_v4l2_format[format_idx];
849 break;
850 }
851 }
852 /* robustness */
853 if (format_idx == USBVISION_SUPPORTED_PALETTES)
854 return -EINVAL;
855 RESTRICT_TO_RANGE(vf->fmt.pix.width, MIN_FRAME_WIDTH, MAX_FRAME_WIDTH);
856 RESTRICT_TO_RANGE(vf->fmt.pix.height, MIN_FRAME_HEIGHT, MAX_FRAME_HEIGHT);
857
858 vf->fmt.pix.bytesperline = vf->fmt.pix.width*
859 usbvision->palette.bytes_per_pixel;
860 vf->fmt.pix.sizeimage = vf->fmt.pix.bytesperline*vf->fmt.pix.height;
861 vf->fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M;
862 vf->fmt.pix.field = V4L2_FIELD_NONE; /* Always progressive image */
863
864 return 0;
865 }
866
867 static int vidioc_s_fmt_vid_cap(struct file *file, void *priv,
868 struct v4l2_format *vf)
869 {
870 struct usb_usbvision *usbvision = video_drvdata(file);
871 int ret;
872
873 ret = vidioc_try_fmt_vid_cap(file, priv, vf);
874 if (ret)
875 return ret;
876
877 /* stop io in case it is already in progress */
878 if (usbvision->streaming == stream_on) {
879 ret = usbvision_stream_interrupt(usbvision);
880 if (ret)
881 return ret;
882 }
883 usbvision_frames_free(usbvision);
884 usbvision_empty_framequeues(usbvision);
885
886 usbvision->cur_frame = NULL;
887
888 /* by now we are committed to the new data... */
889 usbvision_set_output(usbvision, vf->fmt.pix.width, vf->fmt.pix.height);
890
891 return 0;
892 }
893
894 static ssize_t usbvision_read(struct file *file, char __user *buf,
895 size_t count, loff_t *ppos)
896 {
897 struct usb_usbvision *usbvision = video_drvdata(file);
898 int noblock = file->f_flags & O_NONBLOCK;
899 unsigned long lock_flags;
900 int ret, i;
901 struct usbvision_frame *frame;
902
903 PDEBUG(DBG_IO, "%s: %ld bytes, noblock=%d", __func__,
904 (unsigned long)count, noblock);
905
906 if (!USBVISION_IS_OPERATIONAL(usbvision) || !buf)
907 return -EFAULT;
908
909 /* This entry point is compatible with the mmap routines
910 so that a user can do either VIDIOC_QBUF/VIDIOC_DQBUF
911 to get frames or call read on the device. */
912 if (!usbvision->num_frames) {
913 /* First, allocate some frames to work with
914 if this has not been done with VIDIOC_REQBUF */
915 usbvision_frames_free(usbvision);
916 usbvision_empty_framequeues(usbvision);
917 usbvision_frames_alloc(usbvision, USBVISION_NUMFRAMES);
918 }
919
920 if (usbvision->streaming != stream_on) {
921 /* no stream is running, make it running ! */
922 usbvision->streaming = stream_on;
923 call_all(usbvision, video, s_stream, 1);
924 }
925
926 /* Then, enqueue as many frames as possible
927 (like a user of VIDIOC_QBUF would do) */
928 for (i = 0; i < usbvision->num_frames; i++) {
929 frame = &usbvision->frame[i];
930 if (frame->grabstate == frame_state_unused) {
931 /* Mark it as ready and enqueue frame */
932 frame->grabstate = frame_state_ready;
933 frame->scanstate = scan_state_scanning;
934 /* Accumulated in usbvision_parse_data() */
935 frame->scanlength = 0;
936
937 /* set v4l2_format index */
938 frame->v4l2_format = usbvision->palette;
939
940 spin_lock_irqsave(&usbvision->queue_lock, lock_flags);
941 list_add_tail(&frame->frame, &usbvision->inqueue);
942 spin_unlock_irqrestore(&usbvision->queue_lock,
943 lock_flags);
944 }
945 }
946
947 /* Then try to steal a frame (like a VIDIOC_DQBUF would do) */
948 if (list_empty(&(usbvision->outqueue))) {
949 if (noblock)
950 return -EAGAIN;
951
952 ret = wait_event_interruptible
953 (usbvision->wait_frame,
954 !list_empty(&(usbvision->outqueue)));
955 if (ret)
956 return ret;
957 }
958
959 spin_lock_irqsave(&usbvision->queue_lock, lock_flags);
960 frame = list_entry(usbvision->outqueue.next,
961 struct usbvision_frame, frame);
962 list_del(usbvision->outqueue.next);
963 spin_unlock_irqrestore(&usbvision->queue_lock, lock_flags);
964
965 /* An error returns an empty frame */
966 if (frame->grabstate == frame_state_error) {
967 frame->bytes_read = 0;
968 return 0;
969 }
970
971 PDEBUG(DBG_IO, "%s: frmx=%d, bytes_read=%ld, scanlength=%ld",
972 __func__,
973 frame->index, frame->bytes_read, frame->scanlength);
974
975 /* copy bytes to user space; we allow for partials reads */
976 if ((count + frame->bytes_read) > (unsigned long)frame->scanlength)
977 count = frame->scanlength - frame->bytes_read;
978
979 if (copy_to_user(buf, frame->data + frame->bytes_read, count))
980 return -EFAULT;
981
982 frame->bytes_read += count;
983 PDEBUG(DBG_IO, "%s: {copy} count used=%ld, new bytes_read=%ld",
984 __func__,
985 (unsigned long)count, frame->bytes_read);
986
987 #if 1
988 /*
989 * FIXME:
990 * For now, forget the frame if it has not been read in one shot.
991 */
992 frame->bytes_read = 0;
993
994 /* Mark it as available to be used again. */
995 frame->grabstate = frame_state_unused;
996 #else
997 if (frame->bytes_read >= frame->scanlength) {
998 /* All data has been read */
999 frame->bytes_read = 0;
1000
1001 /* Mark it as available to be used again. */
1002 frame->grabstate = frame_state_unused;
1003 }
1004 #endif
1005
1006 return count;
1007 }
1008
1009 static ssize_t usbvision_v4l2_read(struct file *file, char __user *buf,
1010 size_t count, loff_t *ppos)
1011 {
1012 struct usb_usbvision *usbvision = video_drvdata(file);
1013 int res;
1014
1015 if (mutex_lock_interruptible(&usbvision->v4l2_lock))
1016 return -ERESTARTSYS;
1017 res = usbvision_read(file, buf, count, ppos);
1018 mutex_unlock(&usbvision->v4l2_lock);
1019 return res;
1020 }
1021
1022 static int usbvision_mmap(struct file *file, struct vm_area_struct *vma)
1023 {
1024 unsigned long size = vma->vm_end - vma->vm_start,
1025 start = vma->vm_start;
1026 void *pos;
1027 u32 i;
1028 struct usb_usbvision *usbvision = video_drvdata(file);
1029
1030 PDEBUG(DBG_MMAP, "mmap");
1031
1032 if (!USBVISION_IS_OPERATIONAL(usbvision))
1033 return -EFAULT;
1034
1035 if (!(vma->vm_flags & VM_WRITE) ||
1036 size != PAGE_ALIGN(usbvision->max_frame_size)) {
1037 return -EINVAL;
1038 }
1039
1040 for (i = 0; i < usbvision->num_frames; i++) {
1041 if (((PAGE_ALIGN(usbvision->max_frame_size)*i) >> PAGE_SHIFT) ==
1042 vma->vm_pgoff)
1043 break;
1044 }
1045 if (i == usbvision->num_frames) {
1046 PDEBUG(DBG_MMAP,
1047 "mmap: user supplied mapping address is out of range");
1048 return -EINVAL;
1049 }
1050
1051 /* VM_IO is eventually going to replace PageReserved altogether */
1052 vma->vm_flags |= VM_IO | VM_DONTEXPAND | VM_DONTDUMP;
1053
1054 pos = usbvision->frame[i].data;
1055 while (size > 0) {
1056 if (vm_insert_page(vma, start, vmalloc_to_page(pos))) {
1057 PDEBUG(DBG_MMAP, "mmap: vm_insert_page failed");
1058 return -EAGAIN;
1059 }
1060 start += PAGE_SIZE;
1061 pos += PAGE_SIZE;
1062 size -= PAGE_SIZE;
1063 }
1064
1065 return 0;
1066 }
1067
1068 static int usbvision_v4l2_mmap(struct file *file, struct vm_area_struct *vma)
1069 {
1070 struct usb_usbvision *usbvision = video_drvdata(file);
1071 int res;
1072
1073 if (mutex_lock_interruptible(&usbvision->v4l2_lock))
1074 return -ERESTARTSYS;
1075 res = usbvision_mmap(file, vma);
1076 mutex_unlock(&usbvision->v4l2_lock);
1077 return res;
1078 }
1079
1080 /*
1081 * Here comes the stuff for radio on usbvision based devices
1082 *
1083 */
1084 static int usbvision_radio_open(struct file *file)
1085 {
1086 struct usb_usbvision *usbvision = video_drvdata(file);
1087 int err_code = 0;
1088
1089 PDEBUG(DBG_IO, "%s:", __func__);
1090
1091 if (mutex_lock_interruptible(&usbvision->v4l2_lock))
1092 return -ERESTARTSYS;
1093 err_code = v4l2_fh_open(file);
1094 if (err_code)
1095 goto out;
1096 if (usbvision->user) {
1097 dev_err(&usbvision->rdev.dev,
1098 "%s: Someone tried to open an already opened USBVision Radio!\n",
1099 __func__);
1100 err_code = -EBUSY;
1101 } else {
1102 /* Alternate interface 1 is is the biggest frame size */
1103 err_code = usbvision_set_alternate(usbvision);
1104 if (err_code < 0) {
1105 usbvision->last_error = err_code;
1106 err_code = -EBUSY;
1107 goto out;
1108 }
1109
1110 /* If so far no errors then we shall start the radio */
1111 usbvision->radio = 1;
1112 call_all(usbvision, tuner, s_radio);
1113 usbvision_set_audio(usbvision, USBVISION_AUDIO_RADIO);
1114 usbvision->user++;
1115 }
1116 out:
1117 mutex_unlock(&usbvision->v4l2_lock);
1118 return err_code;
1119 }
1120
1121
1122 static int usbvision_radio_close(struct file *file)
1123 {
1124 struct usb_usbvision *usbvision = video_drvdata(file);
1125
1126 PDEBUG(DBG_IO, "");
1127
1128 mutex_lock(&usbvision->v4l2_lock);
1129 /* Set packet size to 0 */
1130 usbvision->iface_alt = 0;
1131 usb_set_interface(usbvision->dev, usbvision->iface,
1132 usbvision->iface_alt);
1133
1134 usbvision_audio_off(usbvision);
1135 usbvision->radio = 0;
1136 usbvision->user--;
1137 mutex_unlock(&usbvision->v4l2_lock);
1138
1139 if (usbvision->remove_pending) {
1140 printk(KERN_INFO "%s: Final disconnect\n", __func__);
1141 v4l2_fh_release(file);
1142 usbvision_release(usbvision);
1143 return 0;
1144 }
1145
1146 PDEBUG(DBG_IO, "success");
1147 return v4l2_fh_release(file);
1148 }
1149
1150 /* Video registration stuff */
1151
1152 /* Video template */
1153 static const struct v4l2_file_operations usbvision_fops = {
1154 .owner = THIS_MODULE,
1155 .open = usbvision_v4l2_open,
1156 .release = usbvision_v4l2_close,
1157 .read = usbvision_v4l2_read,
1158 .mmap = usbvision_v4l2_mmap,
1159 .unlocked_ioctl = video_ioctl2,
1160 };
1161
1162 static const struct v4l2_ioctl_ops usbvision_ioctl_ops = {
1163 .vidioc_querycap = vidioc_querycap,
1164 .vidioc_enum_fmt_vid_cap = vidioc_enum_fmt_vid_cap,
1165 .vidioc_g_fmt_vid_cap = vidioc_g_fmt_vid_cap,
1166 .vidioc_try_fmt_vid_cap = vidioc_try_fmt_vid_cap,
1167 .vidioc_s_fmt_vid_cap = vidioc_s_fmt_vid_cap,
1168 .vidioc_reqbufs = vidioc_reqbufs,
1169 .vidioc_querybuf = vidioc_querybuf,
1170 .vidioc_qbuf = vidioc_qbuf,
1171 .vidioc_dqbuf = vidioc_dqbuf,
1172 .vidioc_s_std = vidioc_s_std,
1173 .vidioc_g_std = vidioc_g_std,
1174 .vidioc_enum_input = vidioc_enum_input,
1175 .vidioc_g_input = vidioc_g_input,
1176 .vidioc_s_input = vidioc_s_input,
1177 .vidioc_streamon = vidioc_streamon,
1178 .vidioc_streamoff = vidioc_streamoff,
1179 .vidioc_g_tuner = vidioc_g_tuner,
1180 .vidioc_s_tuner = vidioc_s_tuner,
1181 .vidioc_g_frequency = vidioc_g_frequency,
1182 .vidioc_s_frequency = vidioc_s_frequency,
1183 .vidioc_log_status = v4l2_ctrl_log_status,
1184 .vidioc_subscribe_event = v4l2_ctrl_subscribe_event,
1185 .vidioc_unsubscribe_event = v4l2_event_unsubscribe,
1186 #ifdef CONFIG_VIDEO_ADV_DEBUG
1187 .vidioc_g_register = vidioc_g_register,
1188 .vidioc_s_register = vidioc_s_register,
1189 #endif
1190 };
1191
1192 static struct video_device usbvision_video_template = {
1193 .fops = &usbvision_fops,
1194 .ioctl_ops = &usbvision_ioctl_ops,
1195 .name = "usbvision-video",
1196 .release = video_device_release_empty,
1197 .tvnorms = USBVISION_NORMS,
1198 };
1199
1200
1201 /* Radio template */
1202 static const struct v4l2_file_operations usbvision_radio_fops = {
1203 .owner = THIS_MODULE,
1204 .open = usbvision_radio_open,
1205 .release = usbvision_radio_close,
1206 .poll = v4l2_ctrl_poll,
1207 .unlocked_ioctl = video_ioctl2,
1208 };
1209
1210 static const struct v4l2_ioctl_ops usbvision_radio_ioctl_ops = {
1211 .vidioc_querycap = vidioc_querycap,
1212 .vidioc_g_tuner = vidioc_g_tuner,
1213 .vidioc_s_tuner = vidioc_s_tuner,
1214 .vidioc_g_frequency = vidioc_g_frequency,
1215 .vidioc_s_frequency = vidioc_s_frequency,
1216 .vidioc_log_status = v4l2_ctrl_log_status,
1217 .vidioc_subscribe_event = v4l2_ctrl_subscribe_event,
1218 .vidioc_unsubscribe_event = v4l2_event_unsubscribe,
1219 };
1220
1221 static struct video_device usbvision_radio_template = {
1222 .fops = &usbvision_radio_fops,
1223 .name = "usbvision-radio",
1224 .release = video_device_release_empty,
1225 .ioctl_ops = &usbvision_radio_ioctl_ops,
1226 };
1227
1228
1229 static void usbvision_vdev_init(struct usb_usbvision *usbvision,
1230 struct video_device *vdev,
1231 const struct video_device *vdev_template,
1232 const char *name)
1233 {
1234 struct usb_device *usb_dev = usbvision->dev;
1235
1236 if (!usb_dev) {
1237 dev_err(&usbvision->dev->dev,
1238 "%s: usbvision->dev is not set\n", __func__);
1239 return;
1240 }
1241
1242 *vdev = *vdev_template;
1243 vdev->lock = &usbvision->v4l2_lock;
1244 vdev->v4l2_dev = &usbvision->v4l2_dev;
1245 snprintf(vdev->name, sizeof(vdev->name), "%s", name);
1246 video_set_drvdata(vdev, usbvision);
1247 }
1248
1249 /* unregister video4linux devices */
1250 static void usbvision_unregister_video(struct usb_usbvision *usbvision)
1251 {
1252 /* Radio Device: */
1253 if (video_is_registered(&usbvision->rdev)) {
1254 PDEBUG(DBG_PROBE, "unregister %s [v4l2]",
1255 video_device_node_name(&usbvision->rdev));
1256 video_unregister_device(&usbvision->rdev);
1257 }
1258
1259 /* Video Device: */
1260 if (video_is_registered(&usbvision->vdev)) {
1261 PDEBUG(DBG_PROBE, "unregister %s [v4l2]",
1262 video_device_node_name(&usbvision->vdev));
1263 video_unregister_device(&usbvision->vdev);
1264 }
1265 }
1266
1267 /* register video4linux devices */
1268 static int usbvision_register_video(struct usb_usbvision *usbvision)
1269 {
1270 int res = -ENOMEM;
1271
1272 /* Video Device: */
1273 usbvision_vdev_init(usbvision, &usbvision->vdev,
1274 &usbvision_video_template, "USBVision Video");
1275 if (!usbvision->have_tuner) {
1276 v4l2_disable_ioctl(&usbvision->vdev, VIDIOC_G_FREQUENCY);
1277 v4l2_disable_ioctl(&usbvision->vdev, VIDIOC_S_TUNER);
1278 v4l2_disable_ioctl(&usbvision->vdev, VIDIOC_G_FREQUENCY);
1279 v4l2_disable_ioctl(&usbvision->vdev, VIDIOC_S_TUNER);
1280 }
1281 if (video_register_device(&usbvision->vdev, VFL_TYPE_GRABBER, video_nr) < 0)
1282 goto err_exit;
1283 printk(KERN_INFO "USBVision[%d]: registered USBVision Video device %s [v4l2]\n",
1284 usbvision->nr, video_device_node_name(&usbvision->vdev));
1285
1286 /* Radio Device: */
1287 if (usbvision_device_data[usbvision->dev_model].radio) {
1288 /* usbvision has radio */
1289 usbvision_vdev_init(usbvision, &usbvision->rdev,
1290 &usbvision_radio_template, "USBVision Radio");
1291 if (video_register_device(&usbvision->rdev, VFL_TYPE_RADIO, radio_nr) < 0)
1292 goto err_exit;
1293 printk(KERN_INFO "USBVision[%d]: registered USBVision Radio device %s [v4l2]\n",
1294 usbvision->nr, video_device_node_name(&usbvision->rdev));
1295 }
1296 /* all done */
1297 return 0;
1298
1299 err_exit:
1300 dev_err(&usbvision->dev->dev,
1301 "USBVision[%d]: video_register_device() failed\n",
1302 usbvision->nr);
1303 usbvision_unregister_video(usbvision);
1304 return res;
1305 }
1306
1307 /*
1308 * usbvision_alloc()
1309 *
1310 * This code allocates the struct usb_usbvision.
1311 * It is filled with default values.
1312 *
1313 * Returns NULL on error, a pointer to usb_usbvision else.
1314 *
1315 */
1316 static struct usb_usbvision *usbvision_alloc(struct usb_device *dev,
1317 struct usb_interface *intf)
1318 {
1319 struct usb_usbvision *usbvision;
1320
1321 usbvision = kzalloc(sizeof(*usbvision), GFP_KERNEL);
1322 if (!usbvision)
1323 return NULL;
1324
1325 usbvision->dev = dev;
1326 if (v4l2_device_register(&intf->dev, &usbvision->v4l2_dev))
1327 goto err_free;
1328
1329 if (v4l2_ctrl_handler_init(&usbvision->hdl, 4))
1330 goto err_unreg;
1331 usbvision->v4l2_dev.ctrl_handler = &usbvision->hdl;
1332 mutex_init(&usbvision->v4l2_lock);
1333
1334 /* prepare control urb for control messages during interrupts */
1335 usbvision->ctrl_urb = usb_alloc_urb(USBVISION_URB_FRAMES, GFP_KERNEL);
1336 if (!usbvision->ctrl_urb)
1337 goto err_unreg;
1338
1339 return usbvision;
1340
1341 err_unreg:
1342 v4l2_ctrl_handler_free(&usbvision->hdl);
1343 v4l2_device_unregister(&usbvision->v4l2_dev);
1344 err_free:
1345 kfree(usbvision);
1346 return NULL;
1347 }
1348
1349 /*
1350 * usbvision_release()
1351 *
1352 * This code does final release of struct usb_usbvision. This happens
1353 * after the device is disconnected -and- all clients closed their files.
1354 *
1355 */
1356 static void usbvision_release(struct usb_usbvision *usbvision)
1357 {
1358 PDEBUG(DBG_PROBE, "");
1359
1360 usbvision->initialized = 0;
1361
1362 usbvision_remove_sysfs(&usbvision->vdev);
1363 usbvision_unregister_video(usbvision);
1364 kfree(usbvision->alt_max_pkt_size);
1365
1366 usb_free_urb(usbvision->ctrl_urb);
1367
1368 v4l2_ctrl_handler_free(&usbvision->hdl);
1369 v4l2_device_unregister(&usbvision->v4l2_dev);
1370 kfree(usbvision);
1371
1372 PDEBUG(DBG_PROBE, "success");
1373 }
1374
1375
1376 /*********************** usb interface **********************************/
1377
1378 static void usbvision_configure_video(struct usb_usbvision *usbvision)
1379 {
1380 int model;
1381
1382 if (!usbvision)
1383 return;
1384
1385 model = usbvision->dev_model;
1386 usbvision->palette = usbvision_v4l2_format[2]; /* V4L2_PIX_FMT_RGB24; */
1387
1388 if (usbvision_device_data[usbvision->dev_model].vin_reg2_override) {
1389 usbvision->vin_reg2_preset =
1390 usbvision_device_data[usbvision->dev_model].vin_reg2;
1391 } else {
1392 usbvision->vin_reg2_preset = 0;
1393 }
1394
1395 usbvision->tvnorm_id = usbvision_device_data[model].video_norm;
1396 usbvision->video_inputs = usbvision_device_data[model].video_channels;
1397 usbvision->ctl_input = 0;
1398 usbvision->radio_freq = 87.5 * 16000;
1399 usbvision->tv_freq = 400 * 16;
1400
1401 /* This should be here to make i2c clients to be able to register */
1402 /* first switch off audio */
1403 if (usbvision_device_data[model].audio_channels > 0)
1404 usbvision_audio_off(usbvision);
1405 /* and then power up the tuner */
1406 usbvision_power_on(usbvision);
1407 usbvision_i2c_register(usbvision);
1408 }
1409
1410 /*
1411 * usbvision_probe()
1412 *
1413 * This procedure queries device descriptor and accepts the interface
1414 * if it looks like USBVISION video device
1415 *
1416 */
1417 static int usbvision_probe(struct usb_interface *intf,
1418 const struct usb_device_id *devid)
1419 {
1420 struct usb_device *dev = usb_get_dev(interface_to_usbdev(intf));
1421 struct usb_interface *uif;
1422 __u8 ifnum = intf->altsetting->desc.bInterfaceNumber;
1423 const struct usb_host_interface *interface;
1424 struct usb_usbvision *usbvision = NULL;
1425 const struct usb_endpoint_descriptor *endpoint;
1426 int model, i, ret;
1427
1428 PDEBUG(DBG_PROBE, "VID=%#04x, PID=%#04x, ifnum=%u",
1429 le16_to_cpu(dev->descriptor.idVendor),
1430 le16_to_cpu(dev->descriptor.idProduct), ifnum);
1431
1432 model = devid->driver_info;
1433 if (model < 0 || model >= usbvision_device_data_size) {
1434 PDEBUG(DBG_PROBE, "model out of bounds %d", model);
1435 ret = -ENODEV;
1436 goto err_usb;
1437 }
1438 printk(KERN_INFO "%s: %s found\n", __func__,
1439 usbvision_device_data[model].model_string);
1440
1441 if (usbvision_device_data[model].interface >= 0)
1442 interface = &dev->actconfig->interface[usbvision_device_data[model].interface]->altsetting[0];
1443 else if (ifnum < dev->actconfig->desc.bNumInterfaces)
1444 interface = &dev->actconfig->interface[ifnum]->altsetting[0];
1445 else {
1446 dev_err(&intf->dev, "interface %d is invalid, max is %d\n",
1447 ifnum, dev->actconfig->desc.bNumInterfaces - 1);
1448 ret = -ENODEV;
1449 goto err_usb;
1450 }
1451
1452 if (interface->desc.bNumEndpoints < 2) {
1453 dev_err(&intf->dev, "interface %d has %d endpoints, but must have minimum 2\n",
1454 ifnum, interface->desc.bNumEndpoints);
1455 ret = -ENODEV;
1456 goto err_usb;
1457 }
1458 endpoint = &interface->endpoint[1].desc;
1459
1460 if (!usb_endpoint_xfer_isoc(endpoint)) {
1461 dev_err(&intf->dev, "%s: interface %d. has non-ISO endpoint!\n",
1462 __func__, ifnum);
1463 dev_err(&intf->dev, "%s: Endpoint attributes %d",
1464 __func__, endpoint->bmAttributes);
1465 ret = -ENODEV;
1466 goto err_usb;
1467 }
1468 if (usb_endpoint_dir_out(endpoint)) {
1469 dev_err(&intf->dev, "%s: interface %d. has ISO OUT endpoint!\n",
1470 __func__, ifnum);
1471 ret = -ENODEV;
1472 goto err_usb;
1473 }
1474
1475 usbvision = usbvision_alloc(dev, intf);
1476 if (!usbvision) {
1477 dev_err(&intf->dev, "%s: couldn't allocate USBVision struct\n", __func__);
1478 ret = -ENOMEM;
1479 goto err_usb;
1480 }
1481
1482 if (dev->descriptor.bNumConfigurations > 1)
1483 usbvision->bridge_type = BRIDGE_NT1004;
1484 else if (model == DAZZLE_DVC_90_REV_1_SECAM)
1485 usbvision->bridge_type = BRIDGE_NT1005;
1486 else
1487 usbvision->bridge_type = BRIDGE_NT1003;
1488 PDEBUG(DBG_PROBE, "bridge_type %d", usbvision->bridge_type);
1489
1490 /* compute alternate max packet sizes */
1491 uif = dev->actconfig->interface[0];
1492
1493 usbvision->num_alt = uif->num_altsetting;
1494 PDEBUG(DBG_PROBE, "Alternate settings: %i", usbvision->num_alt);
1495 usbvision->alt_max_pkt_size = kmalloc(32 * usbvision->num_alt, GFP_KERNEL);
1496 if (!usbvision->alt_max_pkt_size) {
1497 ret = -ENOMEM;
1498 goto err_pkt;
1499 }
1500
1501 for (i = 0; i < usbvision->num_alt; i++) {
1502 u16 tmp;
1503
1504 if (uif->altsetting[i].desc.bNumEndpoints < 2) {
1505 ret = -ENODEV;
1506 goto err_pkt;
1507 }
1508
1509 tmp = le16_to_cpu(uif->altsetting[i].endpoint[1].desc.
1510 wMaxPacketSize);
1511 usbvision->alt_max_pkt_size[i] =
1512 (tmp & 0x07ff) * (((tmp & 0x1800) >> 11) + 1);
1513 PDEBUG(DBG_PROBE, "Alternate setting %i, max size= %i", i,
1514 usbvision->alt_max_pkt_size[i]);
1515 }
1516
1517
1518 usbvision->nr = usbvision_nr++;
1519
1520 spin_lock_init(&usbvision->queue_lock);
1521 init_waitqueue_head(&usbvision->wait_frame);
1522 init_waitqueue_head(&usbvision->wait_stream);
1523
1524 usbvision->have_tuner = usbvision_device_data[model].tuner;
1525 if (usbvision->have_tuner)
1526 usbvision->tuner_type = usbvision_device_data[model].tuner_type;
1527
1528 usbvision->dev_model = model;
1529 usbvision->remove_pending = 0;
1530 usbvision->iface = ifnum;
1531 usbvision->iface_alt = 0;
1532 usbvision->video_endp = endpoint->bEndpointAddress;
1533 usbvision->isoc_packet_size = 0;
1534 usbvision->usb_bandwidth = 0;
1535 usbvision->user = 0;
1536 usbvision->streaming = stream_off;
1537 usbvision_configure_video(usbvision);
1538 usbvision_register_video(usbvision);
1539
1540 usbvision_create_sysfs(&usbvision->vdev);
1541
1542 PDEBUG(DBG_PROBE, "success");
1543 return 0;
1544
1545 err_pkt:
1546 usbvision_release(usbvision);
1547 err_usb:
1548 usb_put_dev(dev);
1549 return ret;
1550 }
1551
1552
1553 /*
1554 * usbvision_disconnect()
1555 *
1556 * This procedure stops all driver activity, deallocates interface-private
1557 * structure (pointed by 'ptr') and after that driver should be removable
1558 * with no ill consequences.
1559 *
1560 */
1561 static void usbvision_disconnect(struct usb_interface *intf)
1562 {
1563 struct usb_usbvision *usbvision = to_usbvision(usb_get_intfdata(intf));
1564
1565 PDEBUG(DBG_PROBE, "");
1566
1567 if (!usbvision) {
1568 pr_err("%s: usb_get_intfdata() failed\n", __func__);
1569 return;
1570 }
1571
1572 mutex_lock(&usbvision->v4l2_lock);
1573
1574 /* At this time we ask to cancel outstanding URBs */
1575 usbvision_stop_isoc(usbvision);
1576
1577 v4l2_device_disconnect(&usbvision->v4l2_dev);
1578 usbvision_i2c_unregister(usbvision);
1579 usbvision->remove_pending = 1; /* Now all ISO data will be ignored */
1580
1581 usb_put_dev(usbvision->dev);
1582 usbvision->dev = NULL; /* USB device is no more */
1583
1584 mutex_unlock(&usbvision->v4l2_lock);
1585
1586 if (usbvision->user) {
1587 printk(KERN_INFO "%s: In use, disconnect pending\n",
1588 __func__);
1589 wake_up_interruptible(&usbvision->wait_frame);
1590 wake_up_interruptible(&usbvision->wait_stream);
1591 } else {
1592 usbvision_release(usbvision);
1593 }
1594
1595 PDEBUG(DBG_PROBE, "success");
1596 }
1597
1598 static struct usb_driver usbvision_driver = {
1599 .name = "usbvision",
1600 .id_table = usbvision_table,
1601 .probe = usbvision_probe,
1602 .disconnect = usbvision_disconnect,
1603 };
1604
1605 /*
1606 * usbvision_init()
1607 *
1608 * This code is run to initialize the driver.
1609 *
1610 */
1611 static int __init usbvision_init(void)
1612 {
1613 int err_code;
1614
1615 PDEBUG(DBG_PROBE, "");
1616
1617 PDEBUG(DBG_IO, "IO debugging is enabled [video]");
1618 PDEBUG(DBG_PROBE, "PROBE debugging is enabled [video]");
1619 PDEBUG(DBG_MMAP, "MMAP debugging is enabled [video]");
1620
1621 /* disable planar mode support unless compression enabled */
1622 if (isoc_mode != ISOC_MODE_COMPRESS) {
1623 /* FIXME : not the right way to set supported flag */
1624 usbvision_v4l2_format[6].supported = 0; /* V4L2_PIX_FMT_YVU420 */
1625 usbvision_v4l2_format[7].supported = 0; /* V4L2_PIX_FMT_YUV422P */
1626 }
1627
1628 err_code = usb_register(&usbvision_driver);
1629
1630 if (err_code == 0) {
1631 printk(KERN_INFO DRIVER_DESC " : " USBVISION_VERSION_STRING "\n");
1632 PDEBUG(DBG_PROBE, "success");
1633 }
1634 return err_code;
1635 }
1636
1637 static void __exit usbvision_exit(void)
1638 {
1639 PDEBUG(DBG_PROBE, "");
1640
1641 usb_deregister(&usbvision_driver);
1642 PDEBUG(DBG_PROBE, "success");
1643 }
1644
1645 module_init(usbvision_init);
1646 module_exit(usbvision_exit);
CRIS linux kernel tree