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Drivers: media: remove __dev* attributes.
[deliverable/linux.git] / drivers / media / usb / usbvision / usbvision-video.c
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 if (!v4l2_chip_match_host(&reg->match))
471 return -EINVAL;
472 /* NT100x has a 8-bit register space */
473 err_code = usbvision_read_reg(usbvision, reg->reg&0xff);
474 if (err_code < 0) {
475 dev_err(&usbvision->vdev->dev,
476 "%s: VIDIOC_DBG_G_REGISTER failed: error %d\n",
477 __func__, err_code);
478 return err_code;
479 }
480 reg->val = err_code;
481 reg->size = 1;
482 return 0;
483 }
484
485 static int vidioc_s_register(struct file *file, void *priv,
486 struct v4l2_dbg_register *reg)
487 {
488 struct usb_usbvision *usbvision = video_drvdata(file);
489 int err_code;
490
491 if (!v4l2_chip_match_host(&reg->match))
492 return -EINVAL;
493 /* NT100x has a 8-bit register space */
494 err_code = usbvision_write_reg(usbvision, reg->reg & 0xff, reg->val);
495 if (err_code < 0) {
496 dev_err(&usbvision->vdev->dev,
497 "%s: VIDIOC_DBG_S_REGISTER failed: error %d\n",
498 __func__, err_code);
499 return err_code;
500 }
501 return 0;
502 }
503 #endif
504
505 static int vidioc_querycap(struct file *file, void *priv,
506 struct v4l2_capability *vc)
507 {
508 struct usb_usbvision *usbvision = video_drvdata(file);
509
510 strlcpy(vc->driver, "USBVision", sizeof(vc->driver));
511 strlcpy(vc->card,
512 usbvision_device_data[usbvision->dev_model].model_string,
513 sizeof(vc->card));
514 usb_make_path(usbvision->dev, vc->bus_info, sizeof(vc->bus_info));
515 vc->capabilities = V4L2_CAP_VIDEO_CAPTURE |
516 V4L2_CAP_AUDIO |
517 V4L2_CAP_READWRITE |
518 V4L2_CAP_STREAMING |
519 (usbvision->have_tuner ? V4L2_CAP_TUNER : 0);
520 return 0;
521 }
522
523 static int vidioc_enum_input(struct file *file, void *priv,
524 struct v4l2_input *vi)
525 {
526 struct usb_usbvision *usbvision = video_drvdata(file);
527 int chan;
528
529 if (vi->index >= usbvision->video_inputs)
530 return -EINVAL;
531 if (usbvision->have_tuner)
532 chan = vi->index;
533 else
534 chan = vi->index + 1; /* skip Television string*/
535
536 /* Determine the requested input characteristics
537 specific for each usbvision card model */
538 switch (chan) {
539 case 0:
540 if (usbvision_device_data[usbvision->dev_model].video_channels == 4) {
541 strcpy(vi->name, "White Video Input");
542 } else {
543 strcpy(vi->name, "Television");
544 vi->type = V4L2_INPUT_TYPE_TUNER;
545 vi->audioset = 1;
546 vi->tuner = chan;
547 vi->std = USBVISION_NORMS;
548 }
549 break;
550 case 1:
551 vi->type = V4L2_INPUT_TYPE_CAMERA;
552 if (usbvision_device_data[usbvision->dev_model].video_channels == 4)
553 strcpy(vi->name, "Green Video Input");
554 else
555 strcpy(vi->name, "Composite Video Input");
556 vi->std = V4L2_STD_PAL;
557 break;
558 case 2:
559 vi->type = V4L2_INPUT_TYPE_CAMERA;
560 if (usbvision_device_data[usbvision->dev_model].video_channels == 4)
561 strcpy(vi->name, "Yellow Video Input");
562 else
563 strcpy(vi->name, "S-Video Input");
564 vi->std = V4L2_STD_PAL;
565 break;
566 case 3:
567 vi->type = V4L2_INPUT_TYPE_CAMERA;
568 strcpy(vi->name, "Red Video Input");
569 vi->std = V4L2_STD_PAL;
570 break;
571 }
572 return 0;
573 }
574
575 static int vidioc_g_input(struct file *file, void *priv, unsigned int *input)
576 {
577 struct usb_usbvision *usbvision = video_drvdata(file);
578
579 *input = usbvision->ctl_input;
580 return 0;
581 }
582
583 static int vidioc_s_input(struct file *file, void *priv, unsigned int input)
584 {
585 struct usb_usbvision *usbvision = video_drvdata(file);
586
587 if (input >= usbvision->video_inputs)
588 return -EINVAL;
589
590 usbvision_muxsel(usbvision, input);
591 usbvision_set_input(usbvision);
592 usbvision_set_output(usbvision,
593 usbvision->curwidth,
594 usbvision->curheight);
595 return 0;
596 }
597
598 static int vidioc_s_std(struct file *file, void *priv, v4l2_std_id *id)
599 {
600 struct usb_usbvision *usbvision = video_drvdata(file);
601
602 usbvision->tvnorm_id = *id;
603
604 call_all(usbvision, core, s_std, usbvision->tvnorm_id);
605 /* propagate the change to the decoder */
606 usbvision_muxsel(usbvision, usbvision->ctl_input);
607
608 return 0;
609 }
610
611 static int vidioc_g_tuner(struct file *file, void *priv,
612 struct v4l2_tuner *vt)
613 {
614 struct usb_usbvision *usbvision = video_drvdata(file);
615
616 if (!usbvision->have_tuner || vt->index) /* Only tuner 0 */
617 return -EINVAL;
618 if (usbvision->radio) {
619 strcpy(vt->name, "Radio");
620 vt->type = V4L2_TUNER_RADIO;
621 } else {
622 strcpy(vt->name, "Television");
623 }
624 /* Let clients fill in the remainder of this struct */
625 call_all(usbvision, tuner, g_tuner, vt);
626
627 return 0;
628 }
629
630 static int vidioc_s_tuner(struct file *file, void *priv,
631 struct v4l2_tuner *vt)
632 {
633 struct usb_usbvision *usbvision = video_drvdata(file);
634
635 /* Only no or one tuner for now */
636 if (!usbvision->have_tuner || vt->index)
637 return -EINVAL;
638 /* let clients handle this */
639 call_all(usbvision, tuner, s_tuner, vt);
640
641 return 0;
642 }
643
644 static int vidioc_g_frequency(struct file *file, void *priv,
645 struct v4l2_frequency *freq)
646 {
647 struct usb_usbvision *usbvision = video_drvdata(file);
648
649 freq->tuner = 0; /* Only one tuner */
650 if (usbvision->radio)
651 freq->type = V4L2_TUNER_RADIO;
652 else
653 freq->type = V4L2_TUNER_ANALOG_TV;
654 freq->frequency = usbvision->freq;
655
656 return 0;
657 }
658
659 static int vidioc_s_frequency(struct file *file, void *priv,
660 struct v4l2_frequency *freq)
661 {
662 struct usb_usbvision *usbvision = video_drvdata(file);
663
664 /* Only no or one tuner for now */
665 if (!usbvision->have_tuner || freq->tuner)
666 return -EINVAL;
667
668 usbvision->freq = freq->frequency;
669 call_all(usbvision, tuner, s_frequency, freq);
670
671 return 0;
672 }
673
674 static int vidioc_g_audio(struct file *file, void *priv, struct v4l2_audio *a)
675 {
676 struct usb_usbvision *usbvision = video_drvdata(file);
677
678 if (usbvision->radio)
679 strcpy(a->name, "Radio");
680 else
681 strcpy(a->name, "TV");
682
683 return 0;
684 }
685
686 static int vidioc_s_audio(struct file *file, void *fh,
687 const struct v4l2_audio *a)
688 {
689 if (a->index)
690 return -EINVAL;
691 return 0;
692 }
693
694 static int vidioc_queryctrl(struct file *file, void *priv,
695 struct v4l2_queryctrl *ctrl)
696 {
697 struct usb_usbvision *usbvision = video_drvdata(file);
698
699 call_all(usbvision, core, queryctrl, ctrl);
700
701 if (!ctrl->type)
702 return -EINVAL;
703
704 return 0;
705 }
706
707 static int vidioc_g_ctrl(struct file *file, void *priv,
708 struct v4l2_control *ctrl)
709 {
710 struct usb_usbvision *usbvision = video_drvdata(file);
711
712 call_all(usbvision, core, g_ctrl, ctrl);
713 return 0;
714 }
715
716 static int vidioc_s_ctrl(struct file *file, void *priv,
717 struct v4l2_control *ctrl)
718 {
719 struct usb_usbvision *usbvision = video_drvdata(file);
720
721 call_all(usbvision, core, s_ctrl, ctrl);
722 return 0;
723 }
724
725 static int vidioc_reqbufs(struct file *file,
726 void *priv, struct v4l2_requestbuffers *vr)
727 {
728 struct usb_usbvision *usbvision = video_drvdata(file);
729 int ret;
730
731 RESTRICT_TO_RANGE(vr->count, 1, USBVISION_NUMFRAMES);
732
733 /* Check input validity:
734 the user must do a VIDEO CAPTURE and MMAP method. */
735 if (vr->memory != V4L2_MEMORY_MMAP)
736 return -EINVAL;
737
738 if (usbvision->streaming == stream_on) {
739 ret = usbvision_stream_interrupt(usbvision);
740 if (ret)
741 return ret;
742 }
743
744 usbvision_frames_free(usbvision);
745 usbvision_empty_framequeues(usbvision);
746 vr->count = usbvision_frames_alloc(usbvision, vr->count);
747
748 usbvision->cur_frame = NULL;
749
750 return 0;
751 }
752
753 static int vidioc_querybuf(struct file *file,
754 void *priv, struct v4l2_buffer *vb)
755 {
756 struct usb_usbvision *usbvision = video_drvdata(file);
757 struct usbvision_frame *frame;
758
759 /* FIXME : must control
760 that buffers are mapped (VIDIOC_REQBUFS has been called) */
761 if (vb->index >= usbvision->num_frames)
762 return -EINVAL;
763 /* Updating the corresponding frame state */
764 vb->flags = 0;
765 frame = &usbvision->frame[vb->index];
766 if (frame->grabstate >= frame_state_ready)
767 vb->flags |= V4L2_BUF_FLAG_QUEUED;
768 if (frame->grabstate >= frame_state_done)
769 vb->flags |= V4L2_BUF_FLAG_DONE;
770 if (frame->grabstate == frame_state_unused)
771 vb->flags |= V4L2_BUF_FLAG_MAPPED;
772 vb->memory = V4L2_MEMORY_MMAP;
773
774 vb->m.offset = vb->index * PAGE_ALIGN(usbvision->max_frame_size);
775
776 vb->memory = V4L2_MEMORY_MMAP;
777 vb->field = V4L2_FIELD_NONE;
778 vb->length = usbvision->curwidth *
779 usbvision->curheight *
780 usbvision->palette.bytes_per_pixel;
781 vb->timestamp = usbvision->frame[vb->index].timestamp;
782 vb->sequence = usbvision->frame[vb->index].sequence;
783 return 0;
784 }
785
786 static int vidioc_qbuf(struct file *file, void *priv, struct v4l2_buffer *vb)
787 {
788 struct usb_usbvision *usbvision = video_drvdata(file);
789 struct usbvision_frame *frame;
790 unsigned long lock_flags;
791
792 /* FIXME : works only on VIDEO_CAPTURE MODE, MMAP. */
793 if (vb->index >= usbvision->num_frames)
794 return -EINVAL;
795
796 frame = &usbvision->frame[vb->index];
797
798 if (frame->grabstate != frame_state_unused)
799 return -EAGAIN;
800
801 /* Mark it as ready and enqueue frame */
802 frame->grabstate = frame_state_ready;
803 frame->scanstate = scan_state_scanning;
804 frame->scanlength = 0; /* Accumulated in usbvision_parse_data() */
805
806 vb->flags &= ~V4L2_BUF_FLAG_DONE;
807
808 /* set v4l2_format index */
809 frame->v4l2_format = usbvision->palette;
810
811 spin_lock_irqsave(&usbvision->queue_lock, lock_flags);
812 list_add_tail(&usbvision->frame[vb->index].frame, &usbvision->inqueue);
813 spin_unlock_irqrestore(&usbvision->queue_lock, lock_flags);
814
815 return 0;
816 }
817
818 static int vidioc_dqbuf(struct file *file, void *priv, struct v4l2_buffer *vb)
819 {
820 struct usb_usbvision *usbvision = video_drvdata(file);
821 int ret;
822 struct usbvision_frame *f;
823 unsigned long lock_flags;
824
825 if (list_empty(&(usbvision->outqueue))) {
826 if (usbvision->streaming == stream_idle)
827 return -EINVAL;
828 ret = wait_event_interruptible
829 (usbvision->wait_frame,
830 !list_empty(&(usbvision->outqueue)));
831 if (ret)
832 return ret;
833 }
834
835 spin_lock_irqsave(&usbvision->queue_lock, lock_flags);
836 f = list_entry(usbvision->outqueue.next,
837 struct usbvision_frame, frame);
838 list_del(usbvision->outqueue.next);
839 spin_unlock_irqrestore(&usbvision->queue_lock, lock_flags);
840
841 f->grabstate = frame_state_unused;
842
843 vb->memory = V4L2_MEMORY_MMAP;
844 vb->flags = V4L2_BUF_FLAG_MAPPED |
845 V4L2_BUF_FLAG_QUEUED |
846 V4L2_BUF_FLAG_DONE;
847 vb->index = f->index;
848 vb->sequence = f->sequence;
849 vb->timestamp = f->timestamp;
850 vb->field = V4L2_FIELD_NONE;
851 vb->bytesused = f->scanlength;
852
853 return 0;
854 }
855
856 static int vidioc_streamon(struct file *file, void *priv, enum v4l2_buf_type i)
857 {
858 struct usb_usbvision *usbvision = video_drvdata(file);
859
860 usbvision->streaming = stream_on;
861 call_all(usbvision, video, s_stream, 1);
862
863 return 0;
864 }
865
866 static int vidioc_streamoff(struct file *file,
867 void *priv, enum v4l2_buf_type type)
868 {
869 struct usb_usbvision *usbvision = video_drvdata(file);
870
871 if (type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
872 return -EINVAL;
873
874 if (usbvision->streaming == stream_on) {
875 usbvision_stream_interrupt(usbvision);
876 /* Stop all video streamings */
877 call_all(usbvision, video, s_stream, 0);
878 }
879 usbvision_empty_framequeues(usbvision);
880
881 return 0;
882 }
883
884 static int vidioc_enum_fmt_vid_cap(struct file *file, void *priv,
885 struct v4l2_fmtdesc *vfd)
886 {
887 if (vfd->index >= USBVISION_SUPPORTED_PALETTES - 1)
888 return -EINVAL;
889 strcpy(vfd->description, usbvision_v4l2_format[vfd->index].desc);
890 vfd->pixelformat = usbvision_v4l2_format[vfd->index].format;
891 return 0;
892 }
893
894 static int vidioc_g_fmt_vid_cap(struct file *file, void *priv,
895 struct v4l2_format *vf)
896 {
897 struct usb_usbvision *usbvision = video_drvdata(file);
898 vf->fmt.pix.width = usbvision->curwidth;
899 vf->fmt.pix.height = usbvision->curheight;
900 vf->fmt.pix.pixelformat = usbvision->palette.format;
901 vf->fmt.pix.bytesperline =
902 usbvision->curwidth * usbvision->palette.bytes_per_pixel;
903 vf->fmt.pix.sizeimage = vf->fmt.pix.bytesperline * usbvision->curheight;
904 vf->fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M;
905 vf->fmt.pix.field = V4L2_FIELD_NONE; /* Always progressive image */
906
907 return 0;
908 }
909
910 static int vidioc_try_fmt_vid_cap(struct file *file, void *priv,
911 struct v4l2_format *vf)
912 {
913 struct usb_usbvision *usbvision = video_drvdata(file);
914 int format_idx;
915
916 /* Find requested format in available ones */
917 for (format_idx = 0; format_idx < USBVISION_SUPPORTED_PALETTES; format_idx++) {
918 if (vf->fmt.pix.pixelformat ==
919 usbvision_v4l2_format[format_idx].format) {
920 usbvision->palette = usbvision_v4l2_format[format_idx];
921 break;
922 }
923 }
924 /* robustness */
925 if (format_idx == USBVISION_SUPPORTED_PALETTES)
926 return -EINVAL;
927 RESTRICT_TO_RANGE(vf->fmt.pix.width, MIN_FRAME_WIDTH, MAX_FRAME_WIDTH);
928 RESTRICT_TO_RANGE(vf->fmt.pix.height, MIN_FRAME_HEIGHT, MAX_FRAME_HEIGHT);
929
930 vf->fmt.pix.bytesperline = vf->fmt.pix.width*
931 usbvision->palette.bytes_per_pixel;
932 vf->fmt.pix.sizeimage = vf->fmt.pix.bytesperline*vf->fmt.pix.height;
933
934 return 0;
935 }
936
937 static int vidioc_s_fmt_vid_cap(struct file *file, void *priv,
938 struct v4l2_format *vf)
939 {
940 struct usb_usbvision *usbvision = video_drvdata(file);
941 int ret;
942
943 ret = vidioc_try_fmt_vid_cap(file, priv, vf);
944 if (ret)
945 return ret;
946
947 /* stop io in case it is already in progress */
948 if (usbvision->streaming == stream_on) {
949 ret = usbvision_stream_interrupt(usbvision);
950 if (ret)
951 return ret;
952 }
953 usbvision_frames_free(usbvision);
954 usbvision_empty_framequeues(usbvision);
955
956 usbvision->cur_frame = NULL;
957
958 /* by now we are committed to the new data... */
959 usbvision_set_output(usbvision, vf->fmt.pix.width, vf->fmt.pix.height);
960
961 return 0;
962 }
963
964 static ssize_t usbvision_read(struct file *file, char __user *buf,
965 size_t count, loff_t *ppos)
966 {
967 struct usb_usbvision *usbvision = video_drvdata(file);
968 int noblock = file->f_flags & O_NONBLOCK;
969 unsigned long lock_flags;
970 int ret, i;
971 struct usbvision_frame *frame;
972
973 PDEBUG(DBG_IO, "%s: %ld bytes, noblock=%d", __func__,
974 (unsigned long)count, noblock);
975
976 if (!USBVISION_IS_OPERATIONAL(usbvision) || (buf == NULL))
977 return -EFAULT;
978
979 /* This entry point is compatible with the mmap routines
980 so that a user can do either VIDIOC_QBUF/VIDIOC_DQBUF
981 to get frames or call read on the device. */
982 if (!usbvision->num_frames) {
983 /* First, allocate some frames to work with
984 if this has not been done with VIDIOC_REQBUF */
985 usbvision_frames_free(usbvision);
986 usbvision_empty_framequeues(usbvision);
987 usbvision_frames_alloc(usbvision, USBVISION_NUMFRAMES);
988 }
989
990 if (usbvision->streaming != stream_on) {
991 /* no stream is running, make it running ! */
992 usbvision->streaming = stream_on;
993 call_all(usbvision, video, s_stream, 1);
994 }
995
996 /* Then, enqueue as many frames as possible
997 (like a user of VIDIOC_QBUF would do) */
998 for (i = 0; i < usbvision->num_frames; i++) {
999 frame = &usbvision->frame[i];
1000 if (frame->grabstate == frame_state_unused) {
1001 /* Mark it as ready and enqueue frame */
1002 frame->grabstate = frame_state_ready;
1003 frame->scanstate = scan_state_scanning;
1004 /* Accumulated in usbvision_parse_data() */
1005 frame->scanlength = 0;
1006
1007 /* set v4l2_format index */
1008 frame->v4l2_format = usbvision->palette;
1009
1010 spin_lock_irqsave(&usbvision->queue_lock, lock_flags);
1011 list_add_tail(&frame->frame, &usbvision->inqueue);
1012 spin_unlock_irqrestore(&usbvision->queue_lock,
1013 lock_flags);
1014 }
1015 }
1016
1017 /* Then try to steal a frame (like a VIDIOC_DQBUF would do) */
1018 if (list_empty(&(usbvision->outqueue))) {
1019 if (noblock)
1020 return -EAGAIN;
1021
1022 ret = wait_event_interruptible
1023 (usbvision->wait_frame,
1024 !list_empty(&(usbvision->outqueue)));
1025 if (ret)
1026 return ret;
1027 }
1028
1029 spin_lock_irqsave(&usbvision->queue_lock, lock_flags);
1030 frame = list_entry(usbvision->outqueue.next,
1031 struct usbvision_frame, frame);
1032 list_del(usbvision->outqueue.next);
1033 spin_unlock_irqrestore(&usbvision->queue_lock, lock_flags);
1034
1035 /* An error returns an empty frame */
1036 if (frame->grabstate == frame_state_error) {
1037 frame->bytes_read = 0;
1038 return 0;
1039 }
1040
1041 PDEBUG(DBG_IO, "%s: frmx=%d, bytes_read=%ld, scanlength=%ld",
1042 __func__,
1043 frame->index, frame->bytes_read, frame->scanlength);
1044
1045 /* copy bytes to user space; we allow for partials reads */
1046 if ((count + frame->bytes_read) > (unsigned long)frame->scanlength)
1047 count = frame->scanlength - frame->bytes_read;
1048
1049 if (copy_to_user(buf, frame->data + frame->bytes_read, count))
1050 return -EFAULT;
1051
1052 frame->bytes_read += count;
1053 PDEBUG(DBG_IO, "%s: {copy} count used=%ld, new bytes_read=%ld",
1054 __func__,
1055 (unsigned long)count, frame->bytes_read);
1056
1057 /* For now, forget the frame if it has not been read in one shot. */
1058 /* if (frame->bytes_read >= frame->scanlength) {*/ /* All data has been read */
1059 frame->bytes_read = 0;
1060
1061 /* Mark it as available to be used again. */
1062 frame->grabstate = frame_state_unused;
1063 /* } */
1064
1065 return count;
1066 }
1067
1068 static ssize_t usbvision_v4l2_read(struct file *file, char __user *buf,
1069 size_t count, loff_t *ppos)
1070 {
1071 struct usb_usbvision *usbvision = video_drvdata(file);
1072 int res;
1073
1074 if (mutex_lock_interruptible(&usbvision->v4l2_lock))
1075 return -ERESTARTSYS;
1076 res = usbvision_read(file, buf, count, ppos);
1077 mutex_unlock(&usbvision->v4l2_lock);
1078 return res;
1079 }
1080
1081 static int usbvision_mmap(struct file *file, struct vm_area_struct *vma)
1082 {
1083 unsigned long size = vma->vm_end - vma->vm_start,
1084 start = vma->vm_start;
1085 void *pos;
1086 u32 i;
1087 struct usb_usbvision *usbvision = video_drvdata(file);
1088
1089 PDEBUG(DBG_MMAP, "mmap");
1090
1091 if (!USBVISION_IS_OPERATIONAL(usbvision))
1092 return -EFAULT;
1093
1094 if (!(vma->vm_flags & VM_WRITE) ||
1095 size != PAGE_ALIGN(usbvision->max_frame_size)) {
1096 return -EINVAL;
1097 }
1098
1099 for (i = 0; i < usbvision->num_frames; i++) {
1100 if (((PAGE_ALIGN(usbvision->max_frame_size)*i) >> PAGE_SHIFT) ==
1101 vma->vm_pgoff)
1102 break;
1103 }
1104 if (i == usbvision->num_frames) {
1105 PDEBUG(DBG_MMAP,
1106 "mmap: user supplied mapping address is out of range");
1107 return -EINVAL;
1108 }
1109
1110 /* VM_IO is eventually going to replace PageReserved altogether */
1111 vma->vm_flags |= VM_IO | VM_DONTEXPAND | VM_DONTDUMP;
1112
1113 pos = usbvision->frame[i].data;
1114 while (size > 0) {
1115 if (vm_insert_page(vma, start, vmalloc_to_page(pos))) {
1116 PDEBUG(DBG_MMAP, "mmap: vm_insert_page failed");
1117 return -EAGAIN;
1118 }
1119 start += PAGE_SIZE;
1120 pos += PAGE_SIZE;
1121 size -= PAGE_SIZE;
1122 }
1123
1124 return 0;
1125 }
1126
1127 static int usbvision_v4l2_mmap(struct file *file, struct vm_area_struct *vma)
1128 {
1129 struct usb_usbvision *usbvision = video_drvdata(file);
1130 int res;
1131
1132 if (mutex_lock_interruptible(&usbvision->v4l2_lock))
1133 return -ERESTARTSYS;
1134 res = usbvision_mmap(file, vma);
1135 mutex_unlock(&usbvision->v4l2_lock);
1136 return res;
1137 }
1138
1139 /*
1140 * Here comes the stuff for radio on usbvision based devices
1141 *
1142 */
1143 static int usbvision_radio_open(struct file *file)
1144 {
1145 struct usb_usbvision *usbvision = video_drvdata(file);
1146 int err_code = 0;
1147
1148 PDEBUG(DBG_IO, "%s:", __func__);
1149
1150 if (mutex_lock_interruptible(&usbvision->v4l2_lock))
1151 return -ERESTARTSYS;
1152 if (usbvision->user) {
1153 dev_err(&usbvision->rdev->dev,
1154 "%s: Someone tried to open an already opened USBVision Radio!\n",
1155 __func__);
1156 err_code = -EBUSY;
1157 } else {
1158 if (power_on_at_open) {
1159 usbvision_reset_power_off_timer(usbvision);
1160 if (usbvision->power == 0) {
1161 usbvision_power_on(usbvision);
1162 usbvision_i2c_register(usbvision);
1163 }
1164 }
1165
1166 /* Alternate interface 1 is is the biggest frame size */
1167 err_code = usbvision_set_alternate(usbvision);
1168 if (err_code < 0) {
1169 usbvision->last_error = err_code;
1170 err_code = -EBUSY;
1171 goto out;
1172 }
1173
1174 /* If so far no errors then we shall start the radio */
1175 usbvision->radio = 1;
1176 call_all(usbvision, tuner, s_radio);
1177 usbvision_set_audio(usbvision, USBVISION_AUDIO_RADIO);
1178 usbvision->user++;
1179 }
1180
1181 if (err_code) {
1182 if (power_on_at_open) {
1183 usbvision_i2c_unregister(usbvision);
1184 usbvision_power_off(usbvision);
1185 usbvision->initialized = 0;
1186 }
1187 }
1188 out:
1189 mutex_unlock(&usbvision->v4l2_lock);
1190 return err_code;
1191 }
1192
1193
1194 static int usbvision_radio_close(struct file *file)
1195 {
1196 struct usb_usbvision *usbvision = video_drvdata(file);
1197 int err_code = 0;
1198
1199 PDEBUG(DBG_IO, "");
1200
1201 mutex_lock(&usbvision->v4l2_lock);
1202 /* Set packet size to 0 */
1203 usbvision->iface_alt = 0;
1204 err_code = usb_set_interface(usbvision->dev, usbvision->iface,
1205 usbvision->iface_alt);
1206
1207 usbvision_audio_off(usbvision);
1208 usbvision->radio = 0;
1209 usbvision->user--;
1210
1211 if (power_on_at_open) {
1212 usbvision_set_power_off_timer(usbvision);
1213 usbvision->initialized = 0;
1214 }
1215
1216 if (usbvision->remove_pending) {
1217 printk(KERN_INFO "%s: Final disconnect\n", __func__);
1218 usbvision_release(usbvision);
1219 }
1220
1221 mutex_unlock(&usbvision->v4l2_lock);
1222 PDEBUG(DBG_IO, "success");
1223 return err_code;
1224 }
1225
1226 /* Video registration stuff */
1227
1228 /* Video template */
1229 static const struct v4l2_file_operations usbvision_fops = {
1230 .owner = THIS_MODULE,
1231 .open = usbvision_v4l2_open,
1232 .release = usbvision_v4l2_close,
1233 .read = usbvision_v4l2_read,
1234 .mmap = usbvision_v4l2_mmap,
1235 .unlocked_ioctl = video_ioctl2,
1236 /* .poll = video_poll, */
1237 };
1238
1239 static const struct v4l2_ioctl_ops usbvision_ioctl_ops = {
1240 .vidioc_querycap = vidioc_querycap,
1241 .vidioc_enum_fmt_vid_cap = vidioc_enum_fmt_vid_cap,
1242 .vidioc_g_fmt_vid_cap = vidioc_g_fmt_vid_cap,
1243 .vidioc_try_fmt_vid_cap = vidioc_try_fmt_vid_cap,
1244 .vidioc_s_fmt_vid_cap = vidioc_s_fmt_vid_cap,
1245 .vidioc_reqbufs = vidioc_reqbufs,
1246 .vidioc_querybuf = vidioc_querybuf,
1247 .vidioc_qbuf = vidioc_qbuf,
1248 .vidioc_dqbuf = vidioc_dqbuf,
1249 .vidioc_s_std = vidioc_s_std,
1250 .vidioc_enum_input = vidioc_enum_input,
1251 .vidioc_g_input = vidioc_g_input,
1252 .vidioc_s_input = vidioc_s_input,
1253 .vidioc_queryctrl = vidioc_queryctrl,
1254 .vidioc_g_audio = vidioc_g_audio,
1255 .vidioc_s_audio = vidioc_s_audio,
1256 .vidioc_g_ctrl = vidioc_g_ctrl,
1257 .vidioc_s_ctrl = vidioc_s_ctrl,
1258 .vidioc_streamon = vidioc_streamon,
1259 .vidioc_streamoff = vidioc_streamoff,
1260 .vidioc_g_tuner = vidioc_g_tuner,
1261 .vidioc_s_tuner = vidioc_s_tuner,
1262 .vidioc_g_frequency = vidioc_g_frequency,
1263 .vidioc_s_frequency = vidioc_s_frequency,
1264 #ifdef CONFIG_VIDEO_ADV_DEBUG
1265 .vidioc_g_register = vidioc_g_register,
1266 .vidioc_s_register = vidioc_s_register,
1267 #endif
1268 };
1269
1270 static struct video_device usbvision_video_template = {
1271 .fops = &usbvision_fops,
1272 .ioctl_ops = &usbvision_ioctl_ops,
1273 .name = "usbvision-video",
1274 .release = video_device_release,
1275 .tvnorms = USBVISION_NORMS,
1276 .current_norm = V4L2_STD_PAL
1277 };
1278
1279
1280 /* Radio template */
1281 static const struct v4l2_file_operations usbvision_radio_fops = {
1282 .owner = THIS_MODULE,
1283 .open = usbvision_radio_open,
1284 .release = usbvision_radio_close,
1285 .unlocked_ioctl = video_ioctl2,
1286 };
1287
1288 static const struct v4l2_ioctl_ops usbvision_radio_ioctl_ops = {
1289 .vidioc_querycap = vidioc_querycap,
1290 .vidioc_enum_input = vidioc_enum_input,
1291 .vidioc_g_input = vidioc_g_input,
1292 .vidioc_s_input = vidioc_s_input,
1293 .vidioc_queryctrl = vidioc_queryctrl,
1294 .vidioc_g_audio = vidioc_g_audio,
1295 .vidioc_s_audio = vidioc_s_audio,
1296 .vidioc_g_ctrl = vidioc_g_ctrl,
1297 .vidioc_s_ctrl = vidioc_s_ctrl,
1298 .vidioc_g_tuner = vidioc_g_tuner,
1299 .vidioc_s_tuner = vidioc_s_tuner,
1300 .vidioc_g_frequency = vidioc_g_frequency,
1301 .vidioc_s_frequency = vidioc_s_frequency,
1302 };
1303
1304 static struct video_device usbvision_radio_template = {
1305 .fops = &usbvision_radio_fops,
1306 .name = "usbvision-radio",
1307 .release = video_device_release,
1308 .ioctl_ops = &usbvision_radio_ioctl_ops,
1309
1310 .tvnorms = USBVISION_NORMS,
1311 .current_norm = V4L2_STD_PAL
1312 };
1313
1314
1315 static struct video_device *usbvision_vdev_init(struct usb_usbvision *usbvision,
1316 struct video_device *vdev_template,
1317 char *name)
1318 {
1319 struct usb_device *usb_dev = usbvision->dev;
1320 struct video_device *vdev;
1321
1322 if (usb_dev == NULL) {
1323 dev_err(&usbvision->dev->dev,
1324 "%s: usbvision->dev is not set\n", __func__);
1325 return NULL;
1326 }
1327
1328 vdev = video_device_alloc();
1329 if (NULL == vdev)
1330 return NULL;
1331 *vdev = *vdev_template;
1332 vdev->lock = &usbvision->v4l2_lock;
1333 vdev->v4l2_dev = &usbvision->v4l2_dev;
1334 snprintf(vdev->name, sizeof(vdev->name), "%s", name);
1335 video_set_drvdata(vdev, usbvision);
1336 return vdev;
1337 }
1338
1339 /* unregister video4linux devices */
1340 static void usbvision_unregister_video(struct usb_usbvision *usbvision)
1341 {
1342 /* Radio Device: */
1343 if (usbvision->rdev) {
1344 PDEBUG(DBG_PROBE, "unregister %s [v4l2]",
1345 video_device_node_name(usbvision->rdev));
1346 if (video_is_registered(usbvision->rdev))
1347 video_unregister_device(usbvision->rdev);
1348 else
1349 video_device_release(usbvision->rdev);
1350 usbvision->rdev = NULL;
1351 }
1352
1353 /* Video Device: */
1354 if (usbvision->vdev) {
1355 PDEBUG(DBG_PROBE, "unregister %s [v4l2]",
1356 video_device_node_name(usbvision->vdev));
1357 if (video_is_registered(usbvision->vdev))
1358 video_unregister_device(usbvision->vdev);
1359 else
1360 video_device_release(usbvision->vdev);
1361 usbvision->vdev = NULL;
1362 }
1363 }
1364
1365 /* register video4linux devices */
1366 static int usbvision_register_video(struct usb_usbvision *usbvision)
1367 {
1368 /* Video Device: */
1369 usbvision->vdev = usbvision_vdev_init(usbvision,
1370 &usbvision_video_template,
1371 "USBVision Video");
1372 if (usbvision->vdev == NULL)
1373 goto err_exit;
1374 if (video_register_device(usbvision->vdev, VFL_TYPE_GRABBER, video_nr) < 0)
1375 goto err_exit;
1376 printk(KERN_INFO "USBVision[%d]: registered USBVision Video device %s [v4l2]\n",
1377 usbvision->nr, video_device_node_name(usbvision->vdev));
1378
1379 /* Radio Device: */
1380 if (usbvision_device_data[usbvision->dev_model].radio) {
1381 /* usbvision has radio */
1382 usbvision->rdev = usbvision_vdev_init(usbvision,
1383 &usbvision_radio_template,
1384 "USBVision Radio");
1385 if (usbvision->rdev == NULL)
1386 goto err_exit;
1387 if (video_register_device(usbvision->rdev, VFL_TYPE_RADIO, radio_nr) < 0)
1388 goto err_exit;
1389 printk(KERN_INFO "USBVision[%d]: registered USBVision Radio device %s [v4l2]\n",
1390 usbvision->nr, video_device_node_name(usbvision->rdev));
1391 }
1392 /* all done */
1393 return 0;
1394
1395 err_exit:
1396 dev_err(&usbvision->dev->dev,
1397 "USBVision[%d]: video_register_device() failed\n",
1398 usbvision->nr);
1399 usbvision_unregister_video(usbvision);
1400 return -1;
1401 }
1402
1403 /*
1404 * usbvision_alloc()
1405 *
1406 * This code allocates the struct usb_usbvision.
1407 * It is filled with default values.
1408 *
1409 * Returns NULL on error, a pointer to usb_usbvision else.
1410 *
1411 */
1412 static struct usb_usbvision *usbvision_alloc(struct usb_device *dev,
1413 struct usb_interface *intf)
1414 {
1415 struct usb_usbvision *usbvision;
1416
1417 usbvision = kzalloc(sizeof(struct usb_usbvision), GFP_KERNEL);
1418 if (usbvision == NULL)
1419 return NULL;
1420
1421 usbvision->dev = dev;
1422 if (v4l2_device_register(&intf->dev, &usbvision->v4l2_dev))
1423 goto err_free;
1424
1425 mutex_init(&usbvision->v4l2_lock);
1426
1427 /* prepare control urb for control messages during interrupts */
1428 usbvision->ctrl_urb = usb_alloc_urb(USBVISION_URB_FRAMES, GFP_KERNEL);
1429 if (usbvision->ctrl_urb == NULL)
1430 goto err_unreg;
1431 init_waitqueue_head(&usbvision->ctrl_urb_wq);
1432
1433 usbvision_init_power_off_timer(usbvision);
1434
1435 return usbvision;
1436
1437 err_unreg:
1438 v4l2_device_unregister(&usbvision->v4l2_dev);
1439 err_free:
1440 kfree(usbvision);
1441 return NULL;
1442 }
1443
1444 /*
1445 * usbvision_release()
1446 *
1447 * This code does final release of struct usb_usbvision. This happens
1448 * after the device is disconnected -and- all clients closed their files.
1449 *
1450 */
1451 static void usbvision_release(struct usb_usbvision *usbvision)
1452 {
1453 PDEBUG(DBG_PROBE, "");
1454
1455 usbvision_reset_power_off_timer(usbvision);
1456
1457 usbvision->initialized = 0;
1458
1459 usbvision_remove_sysfs(usbvision->vdev);
1460 usbvision_unregister_video(usbvision);
1461
1462 usb_free_urb(usbvision->ctrl_urb);
1463
1464 v4l2_device_unregister(&usbvision->v4l2_dev);
1465 kfree(usbvision);
1466
1467 PDEBUG(DBG_PROBE, "success");
1468 }
1469
1470
1471 /*********************** usb interface **********************************/
1472
1473 static void usbvision_configure_video(struct usb_usbvision *usbvision)
1474 {
1475 int model;
1476
1477 if (usbvision == NULL)
1478 return;
1479
1480 model = usbvision->dev_model;
1481 usbvision->palette = usbvision_v4l2_format[2]; /* V4L2_PIX_FMT_RGB24; */
1482
1483 if (usbvision_device_data[usbvision->dev_model].vin_reg2_override) {
1484 usbvision->vin_reg2_preset =
1485 usbvision_device_data[usbvision->dev_model].vin_reg2;
1486 } else {
1487 usbvision->vin_reg2_preset = 0;
1488 }
1489
1490 usbvision->tvnorm_id = usbvision_device_data[model].video_norm;
1491
1492 usbvision->video_inputs = usbvision_device_data[model].video_channels;
1493 usbvision->ctl_input = 0;
1494
1495 /* This should be here to make i2c clients to be able to register */
1496 /* first switch off audio */
1497 if (usbvision_device_data[model].audio_channels > 0)
1498 usbvision_audio_off(usbvision);
1499 if (!power_on_at_open) {
1500 /* and then power up the noisy tuner */
1501 usbvision_power_on(usbvision);
1502 usbvision_i2c_register(usbvision);
1503 }
1504 }
1505
1506 /*
1507 * usbvision_probe()
1508 *
1509 * This procedure queries device descriptor and accepts the interface
1510 * if it looks like USBVISION video device
1511 *
1512 */
1513 static int usbvision_probe(struct usb_interface *intf,
1514 const struct usb_device_id *devid)
1515 {
1516 struct usb_device *dev = usb_get_dev(interface_to_usbdev(intf));
1517 struct usb_interface *uif;
1518 __u8 ifnum = intf->altsetting->desc.bInterfaceNumber;
1519 const struct usb_host_interface *interface;
1520 struct usb_usbvision *usbvision = NULL;
1521 const struct usb_endpoint_descriptor *endpoint;
1522 int model, i;
1523
1524 PDEBUG(DBG_PROBE, "VID=%#04x, PID=%#04x, ifnum=%u",
1525 dev->descriptor.idVendor,
1526 dev->descriptor.idProduct, ifnum);
1527
1528 model = devid->driver_info;
1529 if (model < 0 || model >= usbvision_device_data_size) {
1530 PDEBUG(DBG_PROBE, "model out of bounds %d", model);
1531 return -ENODEV;
1532 }
1533 printk(KERN_INFO "%s: %s found\n", __func__,
1534 usbvision_device_data[model].model_string);
1535
1536 if (usbvision_device_data[model].interface >= 0)
1537 interface = &dev->actconfig->interface[usbvision_device_data[model].interface]->altsetting[0];
1538 else
1539 interface = &dev->actconfig->interface[ifnum]->altsetting[0];
1540 endpoint = &interface->endpoint[1].desc;
1541 if (!usb_endpoint_xfer_isoc(endpoint)) {
1542 dev_err(&intf->dev, "%s: interface %d. has non-ISO endpoint!\n",
1543 __func__, ifnum);
1544 dev_err(&intf->dev, "%s: Endpoint attributes %d",
1545 __func__, endpoint->bmAttributes);
1546 return -ENODEV;
1547 }
1548 if (usb_endpoint_dir_out(endpoint)) {
1549 dev_err(&intf->dev, "%s: interface %d. has ISO OUT endpoint!\n",
1550 __func__, ifnum);
1551 return -ENODEV;
1552 }
1553
1554 usbvision = usbvision_alloc(dev, intf);
1555 if (usbvision == NULL) {
1556 dev_err(&intf->dev, "%s: couldn't allocate USBVision struct\n", __func__);
1557 return -ENOMEM;
1558 }
1559
1560 if (dev->descriptor.bNumConfigurations > 1)
1561 usbvision->bridge_type = BRIDGE_NT1004;
1562 else if (model == DAZZLE_DVC_90_REV_1_SECAM)
1563 usbvision->bridge_type = BRIDGE_NT1005;
1564 else
1565 usbvision->bridge_type = BRIDGE_NT1003;
1566 PDEBUG(DBG_PROBE, "bridge_type %d", usbvision->bridge_type);
1567
1568 /* compute alternate max packet sizes */
1569 uif = dev->actconfig->interface[0];
1570
1571 usbvision->num_alt = uif->num_altsetting;
1572 PDEBUG(DBG_PROBE, "Alternate settings: %i", usbvision->num_alt);
1573 usbvision->alt_max_pkt_size = kmalloc(32 * usbvision->num_alt, GFP_KERNEL);
1574 if (usbvision->alt_max_pkt_size == NULL) {
1575 dev_err(&intf->dev, "usbvision: out of memory!\n");
1576 return -ENOMEM;
1577 }
1578
1579 for (i = 0; i < usbvision->num_alt; i++) {
1580 u16 tmp = le16_to_cpu(uif->altsetting[i].endpoint[1].desc.
1581 wMaxPacketSize);
1582 usbvision->alt_max_pkt_size[i] =
1583 (tmp & 0x07ff) * (((tmp & 0x1800) >> 11) + 1);
1584 PDEBUG(DBG_PROBE, "Alternate setting %i, max size= %i", i,
1585 usbvision->alt_max_pkt_size[i]);
1586 }
1587
1588
1589 usbvision->nr = usbvision_nr++;
1590
1591 usbvision->have_tuner = usbvision_device_data[model].tuner;
1592 if (usbvision->have_tuner)
1593 usbvision->tuner_type = usbvision_device_data[model].tuner_type;
1594
1595 usbvision->dev_model = model;
1596 usbvision->remove_pending = 0;
1597 usbvision->iface = ifnum;
1598 usbvision->iface_alt = 0;
1599 usbvision->video_endp = endpoint->bEndpointAddress;
1600 usbvision->isoc_packet_size = 0;
1601 usbvision->usb_bandwidth = 0;
1602 usbvision->user = 0;
1603 usbvision->streaming = stream_off;
1604 usbvision_configure_video(usbvision);
1605 usbvision_register_video(usbvision);
1606
1607 usbvision_create_sysfs(usbvision->vdev);
1608
1609 PDEBUG(DBG_PROBE, "success");
1610 return 0;
1611 }
1612
1613
1614 /*
1615 * usbvision_disconnect()
1616 *
1617 * This procedure stops all driver activity, deallocates interface-private
1618 * structure (pointed by 'ptr') and after that driver should be removable
1619 * with no ill consequences.
1620 *
1621 */
1622 static void usbvision_disconnect(struct usb_interface *intf)
1623 {
1624 struct usb_usbvision *usbvision = to_usbvision(usb_get_intfdata(intf));
1625
1626 PDEBUG(DBG_PROBE, "");
1627
1628 if (usbvision == NULL) {
1629 pr_err("%s: usb_get_intfdata() failed\n", __func__);
1630 return;
1631 }
1632
1633 mutex_lock(&usbvision->v4l2_lock);
1634
1635 /* At this time we ask to cancel outstanding URBs */
1636 usbvision_stop_isoc(usbvision);
1637
1638 v4l2_device_disconnect(&usbvision->v4l2_dev);
1639
1640 if (usbvision->power) {
1641 usbvision_i2c_unregister(usbvision);
1642 usbvision_power_off(usbvision);
1643 }
1644 usbvision->remove_pending = 1; /* Now all ISO data will be ignored */
1645
1646 usb_put_dev(usbvision->dev);
1647 usbvision->dev = NULL; /* USB device is no more */
1648
1649 mutex_unlock(&usbvision->v4l2_lock);
1650
1651 if (usbvision->user) {
1652 printk(KERN_INFO "%s: In use, disconnect pending\n",
1653 __func__);
1654 wake_up_interruptible(&usbvision->wait_frame);
1655 wake_up_interruptible(&usbvision->wait_stream);
1656 } else {
1657 usbvision_release(usbvision);
1658 }
1659
1660 PDEBUG(DBG_PROBE, "success");
1661 }
1662
1663 static struct usb_driver usbvision_driver = {
1664 .name = "usbvision",
1665 .id_table = usbvision_table,
1666 .probe = usbvision_probe,
1667 .disconnect = usbvision_disconnect,
1668 };
1669
1670 /*
1671 * usbvision_init()
1672 *
1673 * This code is run to initialize the driver.
1674 *
1675 */
1676 static int __init usbvision_init(void)
1677 {
1678 int err_code;
1679
1680 PDEBUG(DBG_PROBE, "");
1681
1682 PDEBUG(DBG_IO, "IO debugging is enabled [video]");
1683 PDEBUG(DBG_PROBE, "PROBE debugging is enabled [video]");
1684 PDEBUG(DBG_MMAP, "MMAP debugging is enabled [video]");
1685
1686 /* disable planar mode support unless compression enabled */
1687 if (isoc_mode != ISOC_MODE_COMPRESS) {
1688 /* FIXME : not the right way to set supported flag */
1689 usbvision_v4l2_format[6].supported = 0; /* V4L2_PIX_FMT_YVU420 */
1690 usbvision_v4l2_format[7].supported = 0; /* V4L2_PIX_FMT_YUV422P */
1691 }
1692
1693 err_code = usb_register(&usbvision_driver);
1694
1695 if (err_code == 0) {
1696 printk(KERN_INFO DRIVER_DESC " : " USBVISION_VERSION_STRING "\n");
1697 PDEBUG(DBG_PROBE, "success");
1698 }
1699 return err_code;
1700 }
1701
1702 static void __exit usbvision_exit(void)
1703 {
1704 PDEBUG(DBG_PROBE, "");
1705
1706 usb_deregister(&usbvision_driver);
1707 PDEBUG(DBG_PROBE, "success");
1708 }
1709
1710 module_init(usbvision_init);
1711 module_exit(usbvision_exit);
1712
1713 /*
1714 * Overrides for Emacs so that we follow Linus's tabbing style.
1715 * ---------------------------------------------------------------------------
1716 * Local variables:
1717 * c-basic-offset: 8
1718 * End:
1719 */
Linux kernel - Deliverables
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