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Input: wacom - fix touch parsing on newer Bamboos
[linux-btrfs-devel.git] / drivers / media / video / usbvision / usbvision-video.c
blobea8ea8a48dfe57f7c3b423bef45e3e0055b3267a
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/version.h>
49 #include <linux/kernel.h>
50 #include <linux/list.h>
51 #include <linux/timer.h>
52 #include <linux/slab.h>
53 #include <linux/mm.h>
54 #include <linux/highmem.h>
55 #include <linux/vmalloc.h>
56 #include <linux/module.h>
57 #include <linux/init.h>
58 #include <linux/spinlock.h>
59 #include <linux/io.h>
60 #include <linux/videodev2.h>
61 #include <linux/i2c.h>
62
63 #include <media/saa7115.h>
64 #include <media/v4l2-common.h>
65 #include <media/v4l2-ioctl.h>
66 #include <media/tuner.h>
67
68 #include <linux/workqueue.h>
69
70 #include "usbvision.h"
71 #include "usbvision-cards.h"
72
73 #define DRIVER_AUTHOR \
74 "Joerg Heckenbach <joerg@heckenbach-aw.de>, " \
75 "Dwaine Garden <DwaineGarden@rogers.com>"
76 #define DRIVER_NAME "usbvision"
77 #define DRIVER_ALIAS "USBVision"
78 #define DRIVER_DESC "USBVision USB Video Device Driver for Linux"
79 #define DRIVER_LICENSE "GPL"
80 #define USBVISION_DRIVER_VERSION_MAJOR 0
81 #define USBVISION_DRIVER_VERSION_MINOR 9
82 #define USBVISION_DRIVER_VERSION_PATCHLEVEL 10
83 #define USBVISION_DRIVER_VERSION KERNEL_VERSION(USBVISION_DRIVER_VERSION_MAJOR,\
84 USBVISION_DRIVER_VERSION_MINOR,\
85 USBVISION_DRIVER_VERSION_PATCHLEVEL)
86 #define USBVISION_VERSION_STRING __stringify(USBVISION_DRIVER_VERSION_MAJOR) \
87 "." __stringify(USBVISION_DRIVER_VERSION_MINOR) \
88 "." __stringify(USBVISION_DRIVER_VERSION_PATCHLEVEL)
89
90 #define ENABLE_HEXDUMP 0 /* Enable if you need it */
91
92
93 #ifdef USBVISION_DEBUG
94 #define PDEBUG(level, fmt, args...) { \
95 if (video_debug & (level)) \
96 printk(KERN_INFO KBUILD_MODNAME ":[%s:%d] " fmt, \
97 __func__, __LINE__ , ## args); \
98 }
99 #else
100 #define PDEBUG(level, fmt, args...) do {} while (0)
101 #endif
102
103 #define DBG_IO (1 << 1)
104 #define DBG_PROBE (1 << 2)
105 #define DBG_MMAP (1 << 3)
106
107 /* String operations */
108 #define rmspace(str) while (*str == ' ') str++;
109 #define goto2next(str) while (*str != ' ') str++; while (*str == ' ') str++;
110
111
112 /* sequential number of usbvision device */
113 static int usbvision_nr;
114
115 static struct usbvision_v4l2_format_st usbvision_v4l2_format[] = {
116 { 1, 1, 8, V4L2_PIX_FMT_GREY , "GREY" },
117 { 1, 2, 16, V4L2_PIX_FMT_RGB565 , "RGB565" },
118 { 1, 3, 24, V4L2_PIX_FMT_RGB24 , "RGB24" },
119 { 1, 4, 32, V4L2_PIX_FMT_RGB32 , "RGB32" },
120 { 1, 2, 16, V4L2_PIX_FMT_RGB555 , "RGB555" },
121 { 1, 2, 16, V4L2_PIX_FMT_YUYV , "YUV422" },
122 { 1, 2, 12, V4L2_PIX_FMT_YVU420 , "YUV420P" }, /* 1.5 ! */
123 { 1, 2, 16, V4L2_PIX_FMT_YUV422P , "YUV422P" }
124 };
125
126 /* Function prototypes */
127 static void usbvision_release(struct usb_usbvision *usbvision);
128
129 /* Default initialization of device driver parameters */
130 /* Set the default format for ISOC endpoint */
131 static int isoc_mode = ISOC_MODE_COMPRESS;
132 /* Set the default Debug Mode of the device driver */
133 static int video_debug;
134 /* Set the default device to power on at startup */
135 static int power_on_at_open = 1;
136 /* Sequential Number of Video Device */
137 static int video_nr = -1;
138 /* Sequential Number of Radio Device */
139 static int radio_nr = -1;
140
141 /* Grab parameters for the device driver */
142
143 /* Showing parameters under SYSFS */
144 module_param(isoc_mode, int, 0444);
145 module_param(video_debug, int, 0444);
146 module_param(power_on_at_open, int, 0444);
147 module_param(video_nr, int, 0444);
148 module_param(radio_nr, int, 0444);
149
150 MODULE_PARM_DESC(isoc_mode, " Set the default format for ISOC endpoint. Default: 0x60 (Compression On)");
151 MODULE_PARM_DESC(video_debug, " Set the default Debug Mode of the device driver. Default: 0 (Off)");
152 MODULE_PARM_DESC(power_on_at_open, " Set the default device to power on when device is opened. Default: 1 (On)");
153 MODULE_PARM_DESC(video_nr, "Set video device number (/dev/videoX). Default: -1 (autodetect)");
154 MODULE_PARM_DESC(radio_nr, "Set radio device number (/dev/radioX). Default: -1 (autodetect)");
155
156
157 /* Misc stuff */
158 MODULE_AUTHOR(DRIVER_AUTHOR);
159 MODULE_DESCRIPTION(DRIVER_DESC);
160 MODULE_LICENSE(DRIVER_LICENSE);
161 MODULE_VERSION(USBVISION_VERSION_STRING);
162 MODULE_ALIAS(DRIVER_ALIAS);
163
164
165 /*****************************************************************************/
166 /* SYSFS Code - Copied from the stv680.c usb module. */
167 /* Device information is located at /sys/class/video4linux/video0 */
168 /* Device parameters information is located at /sys/module/usbvision */
169 /* Device USB Information is located at */
170 /* /sys/bus/usb/drivers/USBVision Video Grabber */
171 /*****************************************************************************/
172
173 #define YES_NO(x) ((x) ? "Yes" : "No")
174
175 static inline struct usb_usbvision *cd_to_usbvision(struct device *cd)
176 {
177 struct video_device *vdev =
178 container_of(cd, struct video_device, dev);
179 return video_get_drvdata(vdev);
180 }
181
182 static ssize_t show_version(struct device *cd,
183 struct device_attribute *attr, char *buf)
184 {
185 return sprintf(buf, "%s\n", USBVISION_VERSION_STRING);
186 }
187 static DEVICE_ATTR(version, S_IRUGO, show_version, NULL);
188
189 static ssize_t show_model(struct device *cd,
190 struct device_attribute *attr, char *buf)
191 {
192 struct video_device *vdev =
193 container_of(cd, struct video_device, dev);
194 struct usb_usbvision *usbvision = video_get_drvdata(vdev);
195 return sprintf(buf, "%s\n",
196 usbvision_device_data[usbvision->dev_model].model_string);
197 }
198 static DEVICE_ATTR(model, S_IRUGO, show_model, NULL);
199
200 static ssize_t show_hue(struct device *cd,
201 struct device_attribute *attr, char *buf)
202 {
203 struct video_device *vdev =
204 container_of(cd, struct video_device, dev);
205 struct usb_usbvision *usbvision = video_get_drvdata(vdev);
206 struct v4l2_control ctrl;
207 ctrl.id = V4L2_CID_HUE;
208 ctrl.value = 0;
209 if (usbvision->user)
210 call_all(usbvision, core, g_ctrl, &ctrl);
211 return sprintf(buf, "%d\n", ctrl.value);
212 }
213 static DEVICE_ATTR(hue, S_IRUGO, show_hue, NULL);
214
215 static ssize_t show_contrast(struct device *cd,
216 struct device_attribute *attr, char *buf)
217 {
218 struct video_device *vdev =
219 container_of(cd, struct video_device, dev);
220 struct usb_usbvision *usbvision = video_get_drvdata(vdev);
221 struct v4l2_control ctrl;
222 ctrl.id = V4L2_CID_CONTRAST;
223 ctrl.value = 0;
224 if (usbvision->user)
225 call_all(usbvision, core, g_ctrl, &ctrl);
226 return sprintf(buf, "%d\n", ctrl.value);
227 }
228 static DEVICE_ATTR(contrast, S_IRUGO, show_contrast, NULL);
229
230 static ssize_t show_brightness(struct device *cd,
231 struct device_attribute *attr, char *buf)
232 {
233 struct video_device *vdev =
234 container_of(cd, struct video_device, dev);
235 struct usb_usbvision *usbvision = video_get_drvdata(vdev);
236 struct v4l2_control ctrl;
237 ctrl.id = V4L2_CID_BRIGHTNESS;
238 ctrl.value = 0;
239 if (usbvision->user)
240 call_all(usbvision, core, g_ctrl, &ctrl);
241 return sprintf(buf, "%d\n", ctrl.value);
242 }
243 static DEVICE_ATTR(brightness, S_IRUGO, show_brightness, NULL);
244
245 static ssize_t show_saturation(struct device *cd,
246 struct device_attribute *attr, char *buf)
247 {
248 struct video_device *vdev =
249 container_of(cd, struct video_device, dev);
250 struct usb_usbvision *usbvision = video_get_drvdata(vdev);
251 struct v4l2_control ctrl;
252 ctrl.id = V4L2_CID_SATURATION;
253 ctrl.value = 0;
254 if (usbvision->user)
255 call_all(usbvision, core, g_ctrl, &ctrl);
256 return sprintf(buf, "%d\n", ctrl.value);
257 }
258 static DEVICE_ATTR(saturation, S_IRUGO, show_saturation, NULL);
259
260 static ssize_t show_streaming(struct device *cd,
261 struct device_attribute *attr, char *buf)
262 {
263 struct video_device *vdev =
264 container_of(cd, struct video_device, dev);
265 struct usb_usbvision *usbvision = video_get_drvdata(vdev);
266 return sprintf(buf, "%s\n",
267 YES_NO(usbvision->streaming == stream_on ? 1 : 0));
268 }
269 static DEVICE_ATTR(streaming, S_IRUGO, show_streaming, NULL);
270
271 static ssize_t show_compression(struct device *cd,
272 struct device_attribute *attr, char *buf)
273 {
274 struct video_device *vdev =
275 container_of(cd, struct video_device, dev);
276 struct usb_usbvision *usbvision = video_get_drvdata(vdev);
277 return sprintf(buf, "%s\n",
278 YES_NO(usbvision->isoc_mode == ISOC_MODE_COMPRESS));
279 }
280 static DEVICE_ATTR(compression, S_IRUGO, show_compression, NULL);
281
282 static ssize_t show_device_bridge(struct device *cd,
283 struct device_attribute *attr, char *buf)
284 {
285 struct video_device *vdev =
286 container_of(cd, struct video_device, dev);
287 struct usb_usbvision *usbvision = video_get_drvdata(vdev);
288 return sprintf(buf, "%d\n", usbvision->bridge_type);
289 }
290 static DEVICE_ATTR(bridge, S_IRUGO, show_device_bridge, NULL);
291
292 static void usbvision_create_sysfs(struct video_device *vdev)
293 {
294 int res;
295
296 if (!vdev)
297 return;
298 do {
299 res = device_create_file(&vdev->dev, &dev_attr_version);
300 if (res < 0)
301 break;
302 res = device_create_file(&vdev->dev, &dev_attr_model);
303 if (res < 0)
304 break;
305 res = device_create_file(&vdev->dev, &dev_attr_hue);
306 if (res < 0)
307 break;
308 res = device_create_file(&vdev->dev, &dev_attr_contrast);
309 if (res < 0)
310 break;
311 res = device_create_file(&vdev->dev, &dev_attr_brightness);
312 if (res < 0)
313 break;
314 res = device_create_file(&vdev->dev, &dev_attr_saturation);
315 if (res < 0)
316 break;
317 res = device_create_file(&vdev->dev, &dev_attr_streaming);
318 if (res < 0)
319 break;
320 res = device_create_file(&vdev->dev, &dev_attr_compression);
321 if (res < 0)
322 break;
323 res = device_create_file(&vdev->dev, &dev_attr_bridge);
324 if (res >= 0)
325 return;
326 } while (0);
327
328 dev_err(&vdev->dev, "%s error: %d\n", __func__, res);
329 }
330
331 static void usbvision_remove_sysfs(struct video_device *vdev)
332 {
333 if (vdev) {
334 device_remove_file(&vdev->dev, &dev_attr_version);
335 device_remove_file(&vdev->dev, &dev_attr_model);
336 device_remove_file(&vdev->dev, &dev_attr_hue);
337 device_remove_file(&vdev->dev, &dev_attr_contrast);
338 device_remove_file(&vdev->dev, &dev_attr_brightness);
339 device_remove_file(&vdev->dev, &dev_attr_saturation);
340 device_remove_file(&vdev->dev, &dev_attr_streaming);
341 device_remove_file(&vdev->dev, &dev_attr_compression);
342 device_remove_file(&vdev->dev, &dev_attr_bridge);
343 }
344 }
345
346 /*
347 * usbvision_open()
348 *
349 * This is part of Video 4 Linux API. The driver can be opened by one
350 * client only (checks internal counter 'usbvision->user'). The procedure
351 * then allocates buffers needed for video processing.
352 *
353 */
354 static int usbvision_v4l2_open(struct file *file)
355 {
356 struct usb_usbvision *usbvision = video_drvdata(file);
357 int err_code = 0;
358
359 PDEBUG(DBG_IO, "open");
360
361 usbvision_reset_power_off_timer(usbvision);
362
363 if (usbvision->user)
364 err_code = -EBUSY;
365 else {
366 /* Allocate memory for the scratch ring buffer */
367 err_code = usbvision_scratch_alloc(usbvision);
368 if (isoc_mode == ISOC_MODE_COMPRESS) {
369 /* Allocate intermediate decompression buffers
370 only if needed */
371 err_code = usbvision_decompress_alloc(usbvision);
372 }
373 if (err_code) {
374 /* Deallocate all buffers if trouble */
375 usbvision_scratch_free(usbvision);
376 usbvision_decompress_free(usbvision);
377 }
378 }
379
380 /* If so far no errors then we shall start the camera */
381 if (!err_code) {
382 if (usbvision->power == 0) {
383 usbvision_power_on(usbvision);
384 usbvision_i2c_register(usbvision);
385 }
386
387 /* Send init sequence only once, it's large! */
388 if (!usbvision->initialized) {
389 int setup_ok = 0;
390 setup_ok = usbvision_setup(usbvision, isoc_mode);
391 if (setup_ok)
392 usbvision->initialized = 1;
393 else
394 err_code = -EBUSY;
395 }
396
397 if (!err_code) {
398 usbvision_begin_streaming(usbvision);
399 err_code = usbvision_init_isoc(usbvision);
400 /* device must be initialized before isoc transfer */
401 usbvision_muxsel(usbvision, 0);
402 usbvision->user++;
403 } else {
404 if (power_on_at_open) {
405 usbvision_i2c_unregister(usbvision);
406 usbvision_power_off(usbvision);
407 usbvision->initialized = 0;
408 }
409 }
410 }
411
412 /* prepare queues */
413 usbvision_empty_framequeues(usbvision);
414
415 PDEBUG(DBG_IO, "success");
416 return err_code;
417 }
418
419 /*
420 * usbvision_v4l2_close()
421 *
422 * This is part of Video 4 Linux API. The procedure
423 * stops streaming and deallocates all buffers that were earlier
424 * allocated in usbvision_v4l2_open().
425 *
426 */
427 static int usbvision_v4l2_close(struct file *file)
428 {
429 struct usb_usbvision *usbvision = video_drvdata(file);
430
431 PDEBUG(DBG_IO, "close");
432
433 usbvision_audio_off(usbvision);
434 usbvision_restart_isoc(usbvision);
435 usbvision_stop_isoc(usbvision);
436
437 usbvision_decompress_free(usbvision);
438 usbvision_frames_free(usbvision);
439 usbvision_empty_framequeues(usbvision);
440 usbvision_scratch_free(usbvision);
441
442 usbvision->user--;
443
444 if (power_on_at_open) {
445 /* power off in a little while
446 to avoid off/on every close/open short sequences */
447 usbvision_set_power_off_timer(usbvision);
448 usbvision->initialized = 0;
449 }
450
451 if (usbvision->remove_pending) {
452 printk(KERN_INFO "%s: Final disconnect\n", __func__);
453 usbvision_release(usbvision);
454 }
455
456 PDEBUG(DBG_IO, "success");
457 return 0;
458 }
459
460
461 /*
462 * usbvision_ioctl()
463 *
464 * This is part of Video 4 Linux API. The procedure handles ioctl() calls.
465 *
466 */
467 #ifdef CONFIG_VIDEO_ADV_DEBUG
468 static int vidioc_g_register(struct file *file, void *priv,
469 struct v4l2_dbg_register *reg)
470 {
471 struct usb_usbvision *usbvision = video_drvdata(file);
472 int err_code;
473
474 if (!v4l2_chip_match_host(&reg->match))
475 return -EINVAL;
476 /* NT100x has a 8-bit register space */
477 err_code = usbvision_read_reg(usbvision, reg->reg&0xff);
478 if (err_code < 0) {
479 dev_err(&usbvision->vdev->dev,
480 "%s: VIDIOC_DBG_G_REGISTER failed: error %d\n",
481 __func__, err_code);
482 return err_code;
483 }
484 reg->val = err_code;
485 reg->size = 1;
486 return 0;
487 }
488
489 static int vidioc_s_register(struct file *file, void *priv,
490 struct v4l2_dbg_register *reg)
491 {
492 struct usb_usbvision *usbvision = video_drvdata(file);
493 int err_code;
494
495 if (!v4l2_chip_match_host(&reg->match))
496 return -EINVAL;
497 /* NT100x has a 8-bit register space */
498 err_code = usbvision_write_reg(usbvision, reg->reg & 0xff, reg->val);
499 if (err_code < 0) {
500 dev_err(&usbvision->vdev->dev,
501 "%s: VIDIOC_DBG_S_REGISTER failed: error %d\n",
502 __func__, err_code);
503 return err_code;
504 }
505 return 0;
506 }
507 #endif
508
509 static int vidioc_querycap(struct file *file, void *priv,
510 struct v4l2_capability *vc)
511 {
512 struct usb_usbvision *usbvision = video_drvdata(file);
513
514 strlcpy(vc->driver, "USBVision", sizeof(vc->driver));
515 strlcpy(vc->card,
516 usbvision_device_data[usbvision->dev_model].model_string,
517 sizeof(vc->card));
518 usb_make_path(usbvision->dev, vc->bus_info, sizeof(vc->bus_info));
519 vc->version = USBVISION_DRIVER_VERSION;
520 vc->capabilities = V4L2_CAP_VIDEO_CAPTURE |
521 V4L2_CAP_AUDIO |
522 V4L2_CAP_READWRITE |
523 V4L2_CAP_STREAMING |
524 (usbvision->have_tuner ? V4L2_CAP_TUNER : 0);
525 return 0;
526 }
527
528 static int vidioc_enum_input(struct file *file, void *priv,
529 struct v4l2_input *vi)
530 {
531 struct usb_usbvision *usbvision = video_drvdata(file);
532 int chan;
533
534 if (vi->index >= usbvision->video_inputs)
535 return -EINVAL;
536 if (usbvision->have_tuner)
537 chan = vi->index;
538 else
539 chan = vi->index + 1; /* skip Television string*/
540
541 /* Determine the requested input characteristics
542 specific for each usbvision card model */
543 switch (chan) {
544 case 0:
545 if (usbvision_device_data[usbvision->dev_model].video_channels == 4) {
546 strcpy(vi->name, "White Video Input");
547 } else {
548 strcpy(vi->name, "Television");
549 vi->type = V4L2_INPUT_TYPE_TUNER;
550 vi->audioset = 1;
551 vi->tuner = chan;
552 vi->std = USBVISION_NORMS;
553 }
554 break;
555 case 1:
556 vi->type = V4L2_INPUT_TYPE_CAMERA;
557 if (usbvision_device_data[usbvision->dev_model].video_channels == 4)
558 strcpy(vi->name, "Green Video Input");
559 else
560 strcpy(vi->name, "Composite Video Input");
561 vi->std = V4L2_STD_PAL;
562 break;
563 case 2:
564 vi->type = V4L2_INPUT_TYPE_CAMERA;
565 if (usbvision_device_data[usbvision->dev_model].video_channels == 4)
566 strcpy(vi->name, "Yellow Video Input");
567 else
568 strcpy(vi->name, "S-Video Input");
569 vi->std = V4L2_STD_PAL;
570 break;
571 case 3:
572 vi->type = V4L2_INPUT_TYPE_CAMERA;
573 strcpy(vi->name, "Red Video Input");
574 vi->std = V4L2_STD_PAL;
575 break;
576 }
577 return 0;
578 }
579
580 static int vidioc_g_input(struct file *file, void *priv, unsigned int *input)
581 {
582 struct usb_usbvision *usbvision = video_drvdata(file);
583
584 *input = usbvision->ctl_input;
585 return 0;
586 }
587
588 static int vidioc_s_input(struct file *file, void *priv, unsigned int input)
589 {
590 struct usb_usbvision *usbvision = video_drvdata(file);
591
592 if (input >= usbvision->video_inputs)
593 return -EINVAL;
594
595 usbvision_muxsel(usbvision, input);
596 usbvision_set_input(usbvision);
597 usbvision_set_output(usbvision,
598 usbvision->curwidth,
599 usbvision->curheight);
600 return 0;
601 }
602
603 static int vidioc_s_std(struct file *file, void *priv, v4l2_std_id *id)
604 {
605 struct usb_usbvision *usbvision = video_drvdata(file);
606
607 usbvision->tvnorm_id = *id;
608
609 call_all(usbvision, core, s_std, usbvision->tvnorm_id);
610 /* propagate the change to the decoder */
611 usbvision_muxsel(usbvision, usbvision->ctl_input);
612
613 return 0;
614 }
615
616 static int vidioc_g_tuner(struct file *file, void *priv,
617 struct v4l2_tuner *vt)
618 {
619 struct usb_usbvision *usbvision = video_drvdata(file);
620
621 if (!usbvision->have_tuner || vt->index) /* Only tuner 0 */
622 return -EINVAL;
623 if (usbvision->radio) {
624 strcpy(vt->name, "Radio");
625 vt->type = V4L2_TUNER_RADIO;
626 } else {
627 strcpy(vt->name, "Television");
628 }
629 /* Let clients fill in the remainder of this struct */
630 call_all(usbvision, tuner, g_tuner, vt);
631
632 return 0;
633 }
634
635 static int vidioc_s_tuner(struct file *file, void *priv,
636 struct v4l2_tuner *vt)
637 {
638 struct usb_usbvision *usbvision = video_drvdata(file);
639
640 /* Only no or one tuner for now */
641 if (!usbvision->have_tuner || vt->index)
642 return -EINVAL;
643 /* let clients handle this */
644 call_all(usbvision, tuner, s_tuner, vt);
645
646 return 0;
647 }
648
649 static int vidioc_g_frequency(struct file *file, void *priv,
650 struct v4l2_frequency *freq)
651 {
652 struct usb_usbvision *usbvision = video_drvdata(file);
653
654 freq->tuner = 0; /* Only one tuner */
655 if (usbvision->radio)
656 freq->type = V4L2_TUNER_RADIO;
657 else
658 freq->type = V4L2_TUNER_ANALOG_TV;
659 freq->frequency = usbvision->freq;
660
661 return 0;
662 }
663
664 static int vidioc_s_frequency(struct file *file, void *priv,
665 struct v4l2_frequency *freq)
666 {
667 struct usb_usbvision *usbvision = video_drvdata(file);
668
669 /* Only no or one tuner for now */
670 if (!usbvision->have_tuner || freq->tuner)
671 return -EINVAL;
672
673 usbvision->freq = freq->frequency;
674 call_all(usbvision, tuner, s_frequency, freq);
675
676 return 0;
677 }
678
679 static int vidioc_g_audio(struct file *file, void *priv, struct v4l2_audio *a)
680 {
681 struct usb_usbvision *usbvision = video_drvdata(file);
682
683 if (usbvision->radio)
684 strcpy(a->name, "Radio");
685 else
686 strcpy(a->name, "TV");
687
688 return 0;
689 }
690
691 static int vidioc_s_audio(struct file *file, void *fh,
692 struct v4l2_audio *a)
693 {
694 if (a->index)
695 return -EINVAL;
696 return 0;
697 }
698
699 static int vidioc_queryctrl(struct file *file, void *priv,
700 struct v4l2_queryctrl *ctrl)
701 {
702 struct usb_usbvision *usbvision = video_drvdata(file);
703
704 call_all(usbvision, core, queryctrl, ctrl);
705
706 if (!ctrl->type)
707 return -EINVAL;
708
709 return 0;
710 }
711
712 static int vidioc_g_ctrl(struct file *file, void *priv,
713 struct v4l2_control *ctrl)
714 {
715 struct usb_usbvision *usbvision = video_drvdata(file);
716
717 call_all(usbvision, core, g_ctrl, ctrl);
718 return 0;
719 }
720
721 static int vidioc_s_ctrl(struct file *file, void *priv,
722 struct v4l2_control *ctrl)
723 {
724 struct usb_usbvision *usbvision = video_drvdata(file);
725
726 call_all(usbvision, core, s_ctrl, ctrl);
727 return 0;
728 }
729
730 static int vidioc_reqbufs(struct file *file,
731 void *priv, struct v4l2_requestbuffers *vr)
732 {
733 struct usb_usbvision *usbvision = video_drvdata(file);
734 int ret;
735
736 RESTRICT_TO_RANGE(vr->count, 1, USBVISION_NUMFRAMES);
737
738 /* Check input validity:
739 the user must do a VIDEO CAPTURE and MMAP method. */
740 if (vr->memory != V4L2_MEMORY_MMAP)
741 return -EINVAL;
742
743 if (usbvision->streaming == stream_on) {
744 ret = usbvision_stream_interrupt(usbvision);
745 if (ret)
746 return ret;
747 }
748
749 usbvision_frames_free(usbvision);
750 usbvision_empty_framequeues(usbvision);
751 vr->count = usbvision_frames_alloc(usbvision, vr->count);
752
753 usbvision->cur_frame = NULL;
754
755 return 0;
756 }
757
758 static int vidioc_querybuf(struct file *file,
759 void *priv, struct v4l2_buffer *vb)
760 {
761 struct usb_usbvision *usbvision = video_drvdata(file);
762 struct usbvision_frame *frame;
763
764 /* FIXME : must control
765 that buffers are mapped (VIDIOC_REQBUFS has been called) */
766 if (vb->index >= usbvision->num_frames)
767 return -EINVAL;
768 /* Updating the corresponding frame state */
769 vb->flags = 0;
770 frame = &usbvision->frame[vb->index];
771 if (frame->grabstate >= frame_state_ready)
772 vb->flags |= V4L2_BUF_FLAG_QUEUED;
773 if (frame->grabstate >= frame_state_done)
774 vb->flags |= V4L2_BUF_FLAG_DONE;
775 if (frame->grabstate == frame_state_unused)
776 vb->flags |= V4L2_BUF_FLAG_MAPPED;
777 vb->memory = V4L2_MEMORY_MMAP;
778
779 vb->m.offset = vb->index * PAGE_ALIGN(usbvision->max_frame_size);
780
781 vb->memory = V4L2_MEMORY_MMAP;
782 vb->field = V4L2_FIELD_NONE;
783 vb->length = usbvision->curwidth *
784 usbvision->curheight *
785 usbvision->palette.bytes_per_pixel;
786 vb->timestamp = usbvision->frame[vb->index].timestamp;
787 vb->sequence = usbvision->frame[vb->index].sequence;
788 return 0;
789 }
790
791 static int vidioc_qbuf(struct file *file, void *priv, struct v4l2_buffer *vb)
792 {
793 struct usb_usbvision *usbvision = video_drvdata(file);
794 struct usbvision_frame *frame;
795 unsigned long lock_flags;
796
797 /* FIXME : works only on VIDEO_CAPTURE MODE, MMAP. */
798 if (vb->index >= usbvision->num_frames)
799 return -EINVAL;
800
801 frame = &usbvision->frame[vb->index];
802
803 if (frame->grabstate != frame_state_unused)
804 return -EAGAIN;
805
806 /* Mark it as ready and enqueue frame */
807 frame->grabstate = frame_state_ready;
808 frame->scanstate = scan_state_scanning;
809 frame->scanlength = 0; /* Accumulated in usbvision_parse_data() */
810
811 vb->flags &= ~V4L2_BUF_FLAG_DONE;
812
813 /* set v4l2_format index */
814 frame->v4l2_format = usbvision->palette;
815
816 spin_lock_irqsave(&usbvision->queue_lock, lock_flags);
817 list_add_tail(&usbvision->frame[vb->index].frame, &usbvision->inqueue);
818 spin_unlock_irqrestore(&usbvision->queue_lock, lock_flags);
819
820 return 0;
821 }
822
823 static int vidioc_dqbuf(struct file *file, void *priv, struct v4l2_buffer *vb)
824 {
825 struct usb_usbvision *usbvision = video_drvdata(file);
826 int ret;
827 struct usbvision_frame *f;
828 unsigned long lock_flags;
829
830 if (list_empty(&(usbvision->outqueue))) {
831 if (usbvision->streaming == stream_idle)
832 return -EINVAL;
833 ret = wait_event_interruptible
834 (usbvision->wait_frame,
835 !list_empty(&(usbvision->outqueue)));
836 if (ret)
837 return ret;
838 }
839
840 spin_lock_irqsave(&usbvision->queue_lock, lock_flags);
841 f = list_entry(usbvision->outqueue.next,
842 struct usbvision_frame, frame);
843 list_del(usbvision->outqueue.next);
844 spin_unlock_irqrestore(&usbvision->queue_lock, lock_flags);
845
846 f->grabstate = frame_state_unused;
847
848 vb->memory = V4L2_MEMORY_MMAP;
849 vb->flags = V4L2_BUF_FLAG_MAPPED |
850 V4L2_BUF_FLAG_QUEUED |
851 V4L2_BUF_FLAG_DONE;
852 vb->index = f->index;
853 vb->sequence = f->sequence;
854 vb->timestamp = f->timestamp;
855 vb->field = V4L2_FIELD_NONE;
856 vb->bytesused = f->scanlength;
857
858 return 0;
859 }
860
861 static int vidioc_streamon(struct file *file, void *priv, enum v4l2_buf_type i)
862 {
863 struct usb_usbvision *usbvision = video_drvdata(file);
864
865 usbvision->streaming = stream_on;
866 call_all(usbvision, video, s_stream, 1);
867
868 return 0;
869 }
870
871 static int vidioc_streamoff(struct file *file,
872 void *priv, enum v4l2_buf_type type)
873 {
874 struct usb_usbvision *usbvision = video_drvdata(file);
875
876 if (type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
877 return -EINVAL;
878
879 if (usbvision->streaming == stream_on) {
880 usbvision_stream_interrupt(usbvision);
881 /* Stop all video streamings */
882 call_all(usbvision, video, s_stream, 0);
883 }
884 usbvision_empty_framequeues(usbvision);
885
886 return 0;
887 }
888
889 static int vidioc_enum_fmt_vid_cap(struct file *file, void *priv,
890 struct v4l2_fmtdesc *vfd)
891 {
892 if (vfd->index >= USBVISION_SUPPORTED_PALETTES - 1)
893 return -EINVAL;
894 strcpy(vfd->description, usbvision_v4l2_format[vfd->index].desc);
895 vfd->pixelformat = usbvision_v4l2_format[vfd->index].format;
896 return 0;
897 }
898
899 static int vidioc_g_fmt_vid_cap(struct file *file, void *priv,
900 struct v4l2_format *vf)
901 {
902 struct usb_usbvision *usbvision = video_drvdata(file);
903 vf->fmt.pix.width = usbvision->curwidth;
904 vf->fmt.pix.height = usbvision->curheight;
905 vf->fmt.pix.pixelformat = usbvision->palette.format;
906 vf->fmt.pix.bytesperline =
907 usbvision->curwidth * usbvision->palette.bytes_per_pixel;
908 vf->fmt.pix.sizeimage = vf->fmt.pix.bytesperline * usbvision->curheight;
909 vf->fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M;
910 vf->fmt.pix.field = V4L2_FIELD_NONE; /* Always progressive image */
911
912 return 0;
913 }
914
915 static int vidioc_try_fmt_vid_cap(struct file *file, void *priv,
916 struct v4l2_format *vf)
917 {
918 struct usb_usbvision *usbvision = video_drvdata(file);
919 int format_idx;
920
921 /* Find requested format in available ones */
922 for (format_idx = 0; format_idx < USBVISION_SUPPORTED_PALETTES; format_idx++) {
923 if (vf->fmt.pix.pixelformat ==
924 usbvision_v4l2_format[format_idx].format) {
925 usbvision->palette = usbvision_v4l2_format[format_idx];
926 break;
927 }
928 }
929 /* robustness */
930 if (format_idx == USBVISION_SUPPORTED_PALETTES)
931 return -EINVAL;
932 RESTRICT_TO_RANGE(vf->fmt.pix.width, MIN_FRAME_WIDTH, MAX_FRAME_WIDTH);
933 RESTRICT_TO_RANGE(vf->fmt.pix.height, MIN_FRAME_HEIGHT, MAX_FRAME_HEIGHT);
934
935 vf->fmt.pix.bytesperline = vf->fmt.pix.width*
936 usbvision->palette.bytes_per_pixel;
937 vf->fmt.pix.sizeimage = vf->fmt.pix.bytesperline*vf->fmt.pix.height;
938
939 return 0;
940 }
941
942 static int vidioc_s_fmt_vid_cap(struct file *file, void *priv,
943 struct v4l2_format *vf)
944 {
945 struct usb_usbvision *usbvision = video_drvdata(file);
946 int ret;
947
948 ret = vidioc_try_fmt_vid_cap(file, priv, vf);
949 if (ret)
950 return ret;
951
952 /* stop io in case it is already in progress */
953 if (usbvision->streaming == stream_on) {
954 ret = usbvision_stream_interrupt(usbvision);
955 if (ret)
956 return ret;
957 }
958 usbvision_frames_free(usbvision);
959 usbvision_empty_framequeues(usbvision);
960
961 usbvision->cur_frame = NULL;
962
963 /* by now we are committed to the new data... */
964 usbvision_set_output(usbvision, vf->fmt.pix.width, vf->fmt.pix.height);
965
966 return 0;
967 }
968
969 static ssize_t usbvision_v4l2_read(struct file *file, char __user *buf,
970 size_t count, loff_t *ppos)
971 {
972 struct usb_usbvision *usbvision = video_drvdata(file);
973 int noblock = file->f_flags & O_NONBLOCK;
974 unsigned long lock_flags;
975 int ret, i;
976 struct usbvision_frame *frame;
977
978 PDEBUG(DBG_IO, "%s: %ld bytes, noblock=%d", __func__,
979 (unsigned long)count, noblock);
980
981 if (!USBVISION_IS_OPERATIONAL(usbvision) || (buf == NULL))
982 return -EFAULT;
983
984 /* This entry point is compatible with the mmap routines
985 so that a user can do either VIDIOC_QBUF/VIDIOC_DQBUF
986 to get frames or call read on the device. */
987 if (!usbvision->num_frames) {
988 /* First, allocate some frames to work with
989 if this has not been done with VIDIOC_REQBUF */
990 usbvision_frames_free(usbvision);
991 usbvision_empty_framequeues(usbvision);
992 usbvision_frames_alloc(usbvision, USBVISION_NUMFRAMES);
993 }
994
995 if (usbvision->streaming != stream_on) {
996 /* no stream is running, make it running ! */
997 usbvision->streaming = stream_on;
998 call_all(usbvision, video, s_stream, 1);
999 }
1000
1001 /* Then, enqueue as many frames as possible
1002 (like a user of VIDIOC_QBUF would do) */
1003 for (i = 0; i < usbvision->num_frames; i++) {
1004 frame = &usbvision->frame[i];
1005 if (frame->grabstate == frame_state_unused) {
1006 /* Mark it as ready and enqueue frame */
1007 frame->grabstate = frame_state_ready;
1008 frame->scanstate = scan_state_scanning;
1009 /* Accumulated in usbvision_parse_data() */
1010 frame->scanlength = 0;
1011
1012 /* set v4l2_format index */
1013 frame->v4l2_format = usbvision->palette;
1014
1015 spin_lock_irqsave(&usbvision->queue_lock, lock_flags);
1016 list_add_tail(&frame->frame, &usbvision->inqueue);
1017 spin_unlock_irqrestore(&usbvision->queue_lock,
1018 lock_flags);
1019 }
1020 }
1021
1022 /* Then try to steal a frame (like a VIDIOC_DQBUF would do) */
1023 if (list_empty(&(usbvision->outqueue))) {
1024 if (noblock)
1025 return -EAGAIN;
1026
1027 ret = wait_event_interruptible
1028 (usbvision->wait_frame,
1029 !list_empty(&(usbvision->outqueue)));
1030 if (ret)
1031 return ret;
1032 }
1033
1034 spin_lock_irqsave(&usbvision->queue_lock, lock_flags);
1035 frame = list_entry(usbvision->outqueue.next,
1036 struct usbvision_frame, frame);
1037 list_del(usbvision->outqueue.next);
1038 spin_unlock_irqrestore(&usbvision->queue_lock, lock_flags);
1039
1040 /* An error returns an empty frame */
1041 if (frame->grabstate == frame_state_error) {
1042 frame->bytes_read = 0;
1043 return 0;
1044 }
1045
1046 PDEBUG(DBG_IO, "%s: frmx=%d, bytes_read=%ld, scanlength=%ld",
1047 __func__,
1048 frame->index, frame->bytes_read, frame->scanlength);
1049
1050 /* copy bytes to user space; we allow for partials reads */
1051 if ((count + frame->bytes_read) > (unsigned long)frame->scanlength)
1052 count = frame->scanlength - frame->bytes_read;
1053
1054 if (copy_to_user(buf, frame->data + frame->bytes_read, count))
1055 return -EFAULT;
1056
1057 frame->bytes_read += count;
1058 PDEBUG(DBG_IO, "%s: {copy} count used=%ld, new bytes_read=%ld",
1059 __func__,
1060 (unsigned long)count, frame->bytes_read);
1061
1062 /* For now, forget the frame if it has not been read in one shot. */
1063 /* if (frame->bytes_read >= frame->scanlength) {*/ /* All data has been read */
1064 frame->bytes_read = 0;
1065
1066 /* Mark it as available to be used again. */
1067 frame->grabstate = frame_state_unused;
1068 /* } */
1069
1070 return count;
1071 }
1072
1073 static int usbvision_v4l2_mmap(struct file *file, struct vm_area_struct *vma)
1074 {
1075 unsigned long size = vma->vm_end - vma->vm_start,
1076 start = vma->vm_start;
1077 void *pos;
1078 u32 i;
1079 struct usb_usbvision *usbvision = video_drvdata(file);
1080
1081 PDEBUG(DBG_MMAP, "mmap");
1082
1083 if (!USBVISION_IS_OPERATIONAL(usbvision))
1084 return -EFAULT;
1085
1086 if (!(vma->vm_flags & VM_WRITE) ||
1087 size != PAGE_ALIGN(usbvision->max_frame_size)) {
1088 return -EINVAL;
1089 }
1090
1091 for (i = 0; i < usbvision->num_frames; i++) {
1092 if (((PAGE_ALIGN(usbvision->max_frame_size)*i) >> PAGE_SHIFT) ==
1093 vma->vm_pgoff)
1094 break;
1095 }
1096 if (i == usbvision->num_frames) {
1097 PDEBUG(DBG_MMAP,
1098 "mmap: user supplied mapping address is out of range");
1099 return -EINVAL;
1100 }
1101
1102 /* VM_IO is eventually going to replace PageReserved altogether */
1103 vma->vm_flags |= VM_IO;
1104 vma->vm_flags |= VM_RESERVED; /* avoid to swap out this VMA */
1105
1106 pos = usbvision->frame[i].data;
1107 while (size > 0) {
1108 if (vm_insert_page(vma, start, vmalloc_to_page(pos))) {
1109 PDEBUG(DBG_MMAP, "mmap: vm_insert_page failed");
1110 return -EAGAIN;
1111 }
1112 start += PAGE_SIZE;
1113 pos += PAGE_SIZE;
1114 size -= PAGE_SIZE;
1115 }
1116
1117 return 0;
1118 }
1119
1120
1121 /*
1122 * Here comes the stuff for radio on usbvision based devices
1123 *
1124 */
1125 static int usbvision_radio_open(struct file *file)
1126 {
1127 struct usb_usbvision *usbvision = video_drvdata(file);
1128 int err_code = 0;
1129
1130 PDEBUG(DBG_IO, "%s:", __func__);
1131
1132 if (usbvision->user) {
1133 dev_err(&usbvision->rdev->dev,
1134 "%s: Someone tried to open an already opened USBVision Radio!\n",
1135 __func__);
1136 err_code = -EBUSY;
1137 } else {
1138 if (power_on_at_open) {
1139 usbvision_reset_power_off_timer(usbvision);
1140 if (usbvision->power == 0) {
1141 usbvision_power_on(usbvision);
1142 usbvision_i2c_register(usbvision);
1143 }
1144 }
1145
1146 /* Alternate interface 1 is is the biggest frame size */
1147 err_code = usbvision_set_alternate(usbvision);
1148 if (err_code < 0) {
1149 usbvision->last_error = err_code;
1150 err_code = -EBUSY;
1151 goto out;
1152 }
1153
1154 /* If so far no errors then we shall start the radio */
1155 usbvision->radio = 1;
1156 call_all(usbvision, tuner, s_radio);
1157 usbvision_set_audio(usbvision, USBVISION_AUDIO_RADIO);
1158 usbvision->user++;
1159 }
1160
1161 if (err_code) {
1162 if (power_on_at_open) {
1163 usbvision_i2c_unregister(usbvision);
1164 usbvision_power_off(usbvision);
1165 usbvision->initialized = 0;
1166 }
1167 }
1168 out:
1169 return err_code;
1170 }
1171
1172
1173 static int usbvision_radio_close(struct file *file)
1174 {
1175 struct usb_usbvision *usbvision = video_drvdata(file);
1176 int err_code = 0;
1177
1178 PDEBUG(DBG_IO, "");
1179
1180 /* Set packet size to 0 */
1181 usbvision->iface_alt = 0;
1182 err_code = usb_set_interface(usbvision->dev, usbvision->iface,
1183 usbvision->iface_alt);
1184
1185 usbvision_audio_off(usbvision);
1186 usbvision->radio = 0;
1187 usbvision->user--;
1188
1189 if (power_on_at_open) {
1190 usbvision_set_power_off_timer(usbvision);
1191 usbvision->initialized = 0;
1192 }
1193
1194 if (usbvision->remove_pending) {
1195 printk(KERN_INFO "%s: Final disconnect\n", __func__);
1196 usbvision_release(usbvision);
1197 }
1198
1199 PDEBUG(DBG_IO, "success");
1200 return err_code;
1201 }
1202
1203 /* Video registration stuff */
1204
1205 /* Video template */
1206 static const struct v4l2_file_operations usbvision_fops = {
1207 .owner = THIS_MODULE,
1208 .open = usbvision_v4l2_open,
1209 .release = usbvision_v4l2_close,
1210 .read = usbvision_v4l2_read,
1211 .mmap = usbvision_v4l2_mmap,
1212 .unlocked_ioctl = video_ioctl2,
1213 /* .poll = video_poll, */
1214 };
1215
1216 static const struct v4l2_ioctl_ops usbvision_ioctl_ops = {
1217 .vidioc_querycap = vidioc_querycap,
1218 .vidioc_enum_fmt_vid_cap = vidioc_enum_fmt_vid_cap,
1219 .vidioc_g_fmt_vid_cap = vidioc_g_fmt_vid_cap,
1220 .vidioc_try_fmt_vid_cap = vidioc_try_fmt_vid_cap,
1221 .vidioc_s_fmt_vid_cap = vidioc_s_fmt_vid_cap,
1222 .vidioc_reqbufs = vidioc_reqbufs,
1223 .vidioc_querybuf = vidioc_querybuf,
1224 .vidioc_qbuf = vidioc_qbuf,
1225 .vidioc_dqbuf = vidioc_dqbuf,
1226 .vidioc_s_std = vidioc_s_std,
1227 .vidioc_enum_input = vidioc_enum_input,
1228 .vidioc_g_input = vidioc_g_input,
1229 .vidioc_s_input = vidioc_s_input,
1230 .vidioc_queryctrl = vidioc_queryctrl,
1231 .vidioc_g_audio = vidioc_g_audio,
1232 .vidioc_s_audio = vidioc_s_audio,
1233 .vidioc_g_ctrl = vidioc_g_ctrl,
1234 .vidioc_s_ctrl = vidioc_s_ctrl,
1235 .vidioc_streamon = vidioc_streamon,
1236 .vidioc_streamoff = vidioc_streamoff,
1237 .vidioc_g_tuner = vidioc_g_tuner,
1238 .vidioc_s_tuner = vidioc_s_tuner,
1239 .vidioc_g_frequency = vidioc_g_frequency,
1240 .vidioc_s_frequency = vidioc_s_frequency,
1241 #ifdef CONFIG_VIDEO_ADV_DEBUG
1242 .vidioc_g_register = vidioc_g_register,
1243 .vidioc_s_register = vidioc_s_register,
1244 #endif
1245 };
1246
1247 static struct video_device usbvision_video_template = {
1248 .fops = &usbvision_fops,
1249 .ioctl_ops = &usbvision_ioctl_ops,
1250 .name = "usbvision-video",
1251 .release = video_device_release,
1252 .tvnorms = USBVISION_NORMS,
1253 .current_norm = V4L2_STD_PAL
1254 };
1255
1256
1257 /* Radio template */
1258 static const struct v4l2_file_operations usbvision_radio_fops = {
1259 .owner = THIS_MODULE,
1260 .open = usbvision_radio_open,
1261 .release = usbvision_radio_close,
1262 .unlocked_ioctl = video_ioctl2,
1263 };
1264
1265 static const struct v4l2_ioctl_ops usbvision_radio_ioctl_ops = {
1266 .vidioc_querycap = vidioc_querycap,
1267 .vidioc_enum_input = vidioc_enum_input,
1268 .vidioc_g_input = vidioc_g_input,
1269 .vidioc_s_input = vidioc_s_input,
1270 .vidioc_queryctrl = vidioc_queryctrl,
1271 .vidioc_g_audio = vidioc_g_audio,
1272 .vidioc_s_audio = vidioc_s_audio,
1273 .vidioc_g_ctrl = vidioc_g_ctrl,
1274 .vidioc_s_ctrl = vidioc_s_ctrl,
1275 .vidioc_g_tuner = vidioc_g_tuner,
1276 .vidioc_s_tuner = vidioc_s_tuner,
1277 .vidioc_g_frequency = vidioc_g_frequency,
1278 .vidioc_s_frequency = vidioc_s_frequency,
1279 };
1280
1281 static struct video_device usbvision_radio_template = {
1282 .fops = &usbvision_radio_fops,
1283 .name = "usbvision-radio",
1284 .release = video_device_release,
1285 .ioctl_ops = &usbvision_radio_ioctl_ops,
1286
1287 .tvnorms = USBVISION_NORMS,
1288 .current_norm = V4L2_STD_PAL
1289 };
1290
1291
1292 static struct video_device *usbvision_vdev_init(struct usb_usbvision *usbvision,
1293 struct video_device *vdev_template,
1294 char *name)
1295 {
1296 struct usb_device *usb_dev = usbvision->dev;
1297 struct video_device *vdev;
1298
1299 if (usb_dev == NULL) {
1300 dev_err(&usbvision->dev->dev,
1301 "%s: usbvision->dev is not set\n", __func__);
1302 return NULL;
1303 }
1304
1305 vdev = video_device_alloc();
1306 if (NULL == vdev)
1307 return NULL;
1308 *vdev = *vdev_template;
1309 vdev->lock = &usbvision->v4l2_lock;
1310 vdev->v4l2_dev = &usbvision->v4l2_dev;
1311 snprintf(vdev->name, sizeof(vdev->name), "%s", name);
1312 video_set_drvdata(vdev, usbvision);
1313 return vdev;
1314 }
1315
1316 /* unregister video4linux devices */
1317 static void usbvision_unregister_video(struct usb_usbvision *usbvision)
1318 {
1319 /* Radio Device: */
1320 if (usbvision->rdev) {
1321 PDEBUG(DBG_PROBE, "unregister %s [v4l2]",
1322 video_device_node_name(usbvision->rdev));
1323 if (video_is_registered(usbvision->rdev))
1324 video_unregister_device(usbvision->rdev);
1325 else
1326 video_device_release(usbvision->rdev);
1327 usbvision->rdev = NULL;
1328 }
1329
1330 /* Video Device: */
1331 if (usbvision->vdev) {
1332 PDEBUG(DBG_PROBE, "unregister %s [v4l2]",
1333 video_device_node_name(usbvision->vdev));
1334 if (video_is_registered(usbvision->vdev))
1335 video_unregister_device(usbvision->vdev);
1336 else
1337 video_device_release(usbvision->vdev);
1338 usbvision->vdev = NULL;
1339 }
1340 }
1341
1342 /* register video4linux devices */
1343 static int __devinit usbvision_register_video(struct usb_usbvision *usbvision)
1344 {
1345 /* Video Device: */
1346 usbvision->vdev = usbvision_vdev_init(usbvision,
1347 &usbvision_video_template,
1348 "USBVision Video");
1349 if (usbvision->vdev == NULL)
1350 goto err_exit;
1351 if (video_register_device(usbvision->vdev, VFL_TYPE_GRABBER, video_nr) < 0)
1352 goto err_exit;
1353 printk(KERN_INFO "USBVision[%d]: registered USBVision Video device %s [v4l2]\n",
1354 usbvision->nr, video_device_node_name(usbvision->vdev));
1355
1356 /* Radio Device: */
1357 if (usbvision_device_data[usbvision->dev_model].radio) {
1358 /* usbvision has radio */
1359 usbvision->rdev = usbvision_vdev_init(usbvision,
1360 &usbvision_radio_template,
1361 "USBVision Radio");
1362 if (usbvision->rdev == NULL)
1363 goto err_exit;
1364 if (video_register_device(usbvision->rdev, VFL_TYPE_RADIO, radio_nr) < 0)
1365 goto err_exit;
1366 printk(KERN_INFO "USBVision[%d]: registered USBVision Radio device %s [v4l2]\n",
1367 usbvision->nr, video_device_node_name(usbvision->rdev));
1368 }
1369 /* all done */
1370 return 0;
1371
1372 err_exit:
1373 dev_err(&usbvision->dev->dev,
1374 "USBVision[%d]: video_register_device() failed\n",
1375 usbvision->nr);
1376 usbvision_unregister_video(usbvision);
1377 return -1;
1378 }
1379
1380 /*
1381 * usbvision_alloc()
1382 *
1383 * This code allocates the struct usb_usbvision.
1384 * It is filled with default values.
1385 *
1386 * Returns NULL on error, a pointer to usb_usbvision else.
1387 *
1388 */
1389 static struct usb_usbvision *usbvision_alloc(struct usb_device *dev,
1390 struct usb_interface *intf)
1391 {
1392 struct usb_usbvision *usbvision;
1393
1394 usbvision = kzalloc(sizeof(struct usb_usbvision), GFP_KERNEL);
1395 if (usbvision == NULL)
1396 return NULL;
1397
1398 usbvision->dev = dev;
1399 if (v4l2_device_register(&intf->dev, &usbvision->v4l2_dev))
1400 goto err_free;
1401
1402 mutex_init(&usbvision->v4l2_lock);
1403
1404 /* prepare control urb for control messages during interrupts */
1405 usbvision->ctrl_urb = usb_alloc_urb(USBVISION_URB_FRAMES, GFP_KERNEL);
1406 if (usbvision->ctrl_urb == NULL)
1407 goto err_unreg;
1408 init_waitqueue_head(&usbvision->ctrl_urb_wq);
1409
1410 usbvision_init_power_off_timer(usbvision);
1411
1412 return usbvision;
1413
1414 err_unreg:
1415 v4l2_device_unregister(&usbvision->v4l2_dev);
1416 err_free:
1417 kfree(usbvision);
1418 return NULL;
1419 }
1420
1421 /*
1422 * usbvision_release()
1423 *
1424 * This code does final release of struct usb_usbvision. This happens
1425 * after the device is disconnected -and- all clients closed their files.
1426 *
1427 */
1428 static void usbvision_release(struct usb_usbvision *usbvision)
1429 {
1430 PDEBUG(DBG_PROBE, "");
1431
1432 usbvision_reset_power_off_timer(usbvision);
1433
1434 usbvision->initialized = 0;
1435
1436 usbvision_remove_sysfs(usbvision->vdev);
1437 usbvision_unregister_video(usbvision);
1438
1439 usb_free_urb(usbvision->ctrl_urb);
1440
1441 v4l2_device_unregister(&usbvision->v4l2_dev);
1442 kfree(usbvision);
1443
1444 PDEBUG(DBG_PROBE, "success");
1445 }
1446
1447
1448 /*********************** usb interface **********************************/
1449
1450 static void usbvision_configure_video(struct usb_usbvision *usbvision)
1451 {
1452 int model;
1453
1454 if (usbvision == NULL)
1455 return;
1456
1457 model = usbvision->dev_model;
1458 usbvision->palette = usbvision_v4l2_format[2]; /* V4L2_PIX_FMT_RGB24; */
1459
1460 if (usbvision_device_data[usbvision->dev_model].vin_reg2_override) {
1461 usbvision->vin_reg2_preset =
1462 usbvision_device_data[usbvision->dev_model].vin_reg2;
1463 } else {
1464 usbvision->vin_reg2_preset = 0;
1465 }
1466
1467 usbvision->tvnorm_id = usbvision_device_data[model].video_norm;
1468
1469 usbvision->video_inputs = usbvision_device_data[model].video_channels;
1470 usbvision->ctl_input = 0;
1471
1472 /* This should be here to make i2c clients to be able to register */
1473 /* first switch off audio */
1474 if (usbvision_device_data[model].audio_channels > 0)
1475 usbvision_audio_off(usbvision);
1476 if (!power_on_at_open) {
1477 /* and then power up the noisy tuner */
1478 usbvision_power_on(usbvision);
1479 usbvision_i2c_register(usbvision);
1480 }
1481 }
1482
1483 /*
1484 * usbvision_probe()
1485 *
1486 * This procedure queries device descriptor and accepts the interface
1487 * if it looks like USBVISION video device
1488 *
1489 */
1490 static int __devinit usbvision_probe(struct usb_interface *intf,
1491 const struct usb_device_id *devid)
1492 {
1493 struct usb_device *dev = usb_get_dev(interface_to_usbdev(intf));
1494 struct usb_interface *uif;
1495 __u8 ifnum = intf->altsetting->desc.bInterfaceNumber;
1496 const struct usb_host_interface *interface;
1497 struct usb_usbvision *usbvision = NULL;
1498 const struct usb_endpoint_descriptor *endpoint;
1499 int model, i;
1500
1501 PDEBUG(DBG_PROBE, "VID=%#04x, PID=%#04x, ifnum=%u",
1502 dev->descriptor.idVendor,
1503 dev->descriptor.idProduct, ifnum);
1504
1505 model = devid->driver_info;
1506 if (model < 0 || model >= usbvision_device_data_size) {
1507 PDEBUG(DBG_PROBE, "model out of bounds %d", model);
1508 return -ENODEV;
1509 }
1510 printk(KERN_INFO "%s: %s found\n", __func__,
1511 usbvision_device_data[model].model_string);
1512
1513 if (usbvision_device_data[model].interface >= 0)
1514 interface = &dev->actconfig->interface[usbvision_device_data[model].interface]->altsetting[0];
1515 else
1516 interface = &dev->actconfig->interface[ifnum]->altsetting[0];
1517 endpoint = &interface->endpoint[1].desc;
1518 if (!usb_endpoint_xfer_isoc(endpoint)) {
1519 dev_err(&intf->dev, "%s: interface %d. has non-ISO endpoint!\n",
1520 __func__, ifnum);
1521 dev_err(&intf->dev, "%s: Endpoint attributes %d",
1522 __func__, endpoint->bmAttributes);
1523 return -ENODEV;
1524 }
1525 if (usb_endpoint_dir_out(endpoint)) {
1526 dev_err(&intf->dev, "%s: interface %d. has ISO OUT endpoint!\n",
1527 __func__, ifnum);
1528 return -ENODEV;
1529 }
1530
1531 usbvision = usbvision_alloc(dev, intf);
1532 if (usbvision == NULL) {
1533 dev_err(&intf->dev, "%s: couldn't allocate USBVision struct\n", __func__);
1534 return -ENOMEM;
1535 }
1536
1537 if (dev->descriptor.bNumConfigurations > 1)
1538 usbvision->bridge_type = BRIDGE_NT1004;
1539 else if (model == DAZZLE_DVC_90_REV_1_SECAM)
1540 usbvision->bridge_type = BRIDGE_NT1005;
1541 else
1542 usbvision->bridge_type = BRIDGE_NT1003;
1543 PDEBUG(DBG_PROBE, "bridge_type %d", usbvision->bridge_type);
1544
1545 /* compute alternate max packet sizes */
1546 uif = dev->actconfig->interface[0];
1547
1548 usbvision->num_alt = uif->num_altsetting;
1549 PDEBUG(DBG_PROBE, "Alternate settings: %i", usbvision->num_alt);
1550 usbvision->alt_max_pkt_size = kmalloc(32 * usbvision->num_alt, GFP_KERNEL);
1551 if (usbvision->alt_max_pkt_size == NULL) {
1552 dev_err(&intf->dev, "usbvision: out of memory!\n");
1553 return -ENOMEM;
1554 }
1555
1556 for (i = 0; i < usbvision->num_alt; i++) {
1557 u16 tmp = le16_to_cpu(uif->altsetting[i].endpoint[1].desc.
1558 wMaxPacketSize);
1559 usbvision->alt_max_pkt_size[i] =
1560 (tmp & 0x07ff) * (((tmp & 0x1800) >> 11) + 1);
1561 PDEBUG(DBG_PROBE, "Alternate setting %i, max size= %i", i,
1562 usbvision->alt_max_pkt_size[i]);
1563 }
1564
1565
1566 usbvision->nr = usbvision_nr++;
1567
1568 usbvision->have_tuner = usbvision_device_data[model].tuner;
1569 if (usbvision->have_tuner)
1570 usbvision->tuner_type = usbvision_device_data[model].tuner_type;
1571
1572 usbvision->dev_model = model;
1573 usbvision->remove_pending = 0;
1574 usbvision->iface = ifnum;
1575 usbvision->iface_alt = 0;
1576 usbvision->video_endp = endpoint->bEndpointAddress;
1577 usbvision->isoc_packet_size = 0;
1578 usbvision->usb_bandwidth = 0;
1579 usbvision->user = 0;
1580 usbvision->streaming = stream_off;
1581 usbvision_configure_video(usbvision);
1582 usbvision_register_video(usbvision);
1583
1584 usbvision_create_sysfs(usbvision->vdev);
1585
1586 PDEBUG(DBG_PROBE, "success");
1587 return 0;
1588 }
1589
1590
1591 /*
1592 * usbvision_disconnect()
1593 *
1594 * This procedure stops all driver activity, deallocates interface-private
1595 * structure (pointed by 'ptr') and after that driver should be removable
1596 * with no ill consequences.
1597 *
1598 */
1599 static void __devexit usbvision_disconnect(struct usb_interface *intf)
1600 {
1601 struct usb_usbvision *usbvision = to_usbvision(usb_get_intfdata(intf));
1602
1603 PDEBUG(DBG_PROBE, "");
1604
1605 if (usbvision == NULL) {
1606 pr_err("%s: usb_get_intfdata() failed\n", __func__);
1607 return;
1608 }
1609
1610 mutex_lock(&usbvision->v4l2_lock);
1611
1612 /* At this time we ask to cancel outstanding URBs */
1613 usbvision_stop_isoc(usbvision);
1614
1615 v4l2_device_disconnect(&usbvision->v4l2_dev);
1616
1617 if (usbvision->power) {
1618 usbvision_i2c_unregister(usbvision);
1619 usbvision_power_off(usbvision);
1620 }
1621 usbvision->remove_pending = 1; /* Now all ISO data will be ignored */
1622
1623 usb_put_dev(usbvision->dev);
1624 usbvision->dev = NULL; /* USB device is no more */
1625
1626 mutex_unlock(&usbvision->v4l2_lock);
1627
1628 if (usbvision->user) {
1629 printk(KERN_INFO "%s: In use, disconnect pending\n",
1630 __func__);
1631 wake_up_interruptible(&usbvision->wait_frame);
1632 wake_up_interruptible(&usbvision->wait_stream);
1633 } else {
1634 usbvision_release(usbvision);
1635 }
1636
1637 PDEBUG(DBG_PROBE, "success");
1638 }
1639
1640 static struct usb_driver usbvision_driver = {
1641 .name = "usbvision",
1642 .id_table = usbvision_table,
1643 .probe = usbvision_probe,
1644 .disconnect = __devexit_p(usbvision_disconnect),
1645 };
1646
1647 /*
1648 * usbvision_init()
1649 *
1650 * This code is run to initialize the driver.
1651 *
1652 */
1653 static int __init usbvision_init(void)
1654 {
1655 int err_code;
1656
1657 PDEBUG(DBG_PROBE, "");
1658
1659 PDEBUG(DBG_IO, "IO debugging is enabled [video]");
1660 PDEBUG(DBG_PROBE, "PROBE debugging is enabled [video]");
1661 PDEBUG(DBG_MMAP, "MMAP debugging is enabled [video]");
1662
1663 /* disable planar mode support unless compression enabled */
1664 if (isoc_mode != ISOC_MODE_COMPRESS) {
1665 /* FIXME : not the right way to set supported flag */
1666 usbvision_v4l2_format[6].supported = 0; /* V4L2_PIX_FMT_YVU420 */
1667 usbvision_v4l2_format[7].supported = 0; /* V4L2_PIX_FMT_YUV422P */
1668 }
1669
1670 err_code = usb_register(&usbvision_driver);
1671
1672 if (err_code == 0) {
1673 printk(KERN_INFO DRIVER_DESC " : " USBVISION_VERSION_STRING "\n");
1674 PDEBUG(DBG_PROBE, "success");
1675 }
1676 return err_code;
1677 }
1678
1679 static void __exit usbvision_exit(void)
1680 {
1681 PDEBUG(DBG_PROBE, "");
1682
1683 usb_deregister(&usbvision_driver);
1684 PDEBUG(DBG_PROBE, "success");
1685 }
1686
1687 module_init(usbvision_init);
1688 module_exit(usbvision_exit);
1689
1690 /*
1691 * Overrides for Emacs so that we follow Linus's tabbing style.
1692 * ---------------------------------------------------------------------------
1693 * Local variables:
1694 * c-basic-offset: 8
1695 * End:
1696 */
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