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FRV: Use generic show_interrupts()
[cris-mirror.git] / drivers / media / video / usbvision / usbvision-video.c
blob6083137f0bf87d5c5b1a07408eba01f1b9cd8f4c
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 "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_DRIVER_VERSION_MAJOR 0
80 #define USBVISION_DRIVER_VERSION_MINOR 9
81 #define USBVISION_DRIVER_VERSION_PATCHLEVEL 10
82 #define USBVISION_DRIVER_VERSION KERNEL_VERSION(USBVISION_DRIVER_VERSION_MAJOR,\
83 USBVISION_DRIVER_VERSION_MINOR,\
84 USBVISION_DRIVER_VERSION_PATCHLEVEL)
85 #define USBVISION_VERSION_STRING __stringify(USBVISION_DRIVER_VERSION_MAJOR) \
86 "." __stringify(USBVISION_DRIVER_VERSION_MINOR) \
87 "." __stringify(USBVISION_DRIVER_VERSION_PATCHLEVEL)
88
89 #define ENABLE_HEXDUMP 0 /* Enable if you need it */
90
91
92 #ifdef USBVISION_DEBUG
93 #define PDEBUG(level, fmt, args...) { \
94 if (video_debug & (level)) \
95 printk(KERN_INFO KBUILD_MODNAME ":[%s:%d] " fmt, \
96 __func__, __LINE__ , ## args); \
97 }
98 #else
99 #define PDEBUG(level, fmt, args...) do {} while (0)
100 #endif
101
102 #define DBG_IO (1 << 1)
103 #define DBG_PROBE (1 << 2)
104 #define DBG_MMAP (1 << 3)
105
106 /* String operations */
107 #define rmspace(str) while (*str == ' ') str++;
108 #define goto2next(str) while (*str != ' ') str++; while (*str == ' ') str++;
109
110
111 /* sequential number of usbvision device */
112 static int usbvision_nr;
113
114 static struct usbvision_v4l2_format_st usbvision_v4l2_format[] = {
115 { 1, 1, 8, V4L2_PIX_FMT_GREY , "GREY" },
116 { 1, 2, 16, V4L2_PIX_FMT_RGB565 , "RGB565" },
117 { 1, 3, 24, V4L2_PIX_FMT_RGB24 , "RGB24" },
118 { 1, 4, 32, V4L2_PIX_FMT_RGB32 , "RGB32" },
119 { 1, 2, 16, V4L2_PIX_FMT_RGB555 , "RGB555" },
120 { 1, 2, 16, V4L2_PIX_FMT_YUYV , "YUV422" },
121 { 1, 2, 12, V4L2_PIX_FMT_YVU420 , "YUV420P" }, /* 1.5 ! */
122 { 1, 2, 16, V4L2_PIX_FMT_YUV422P , "YUV422P" }
123 };
124
125 /* Function prototypes */
126 static void usbvision_release(struct usb_usbvision *usbvision);
127
128 /* Default initialization of device driver parameters */
129 /* Set the default format for ISOC endpoint */
130 static int isoc_mode = ISOC_MODE_COMPRESS;
131 /* Set the default Debug Mode of the device driver */
132 static int video_debug;
133 /* Set the default device to power on at startup */
134 static int power_on_at_open = 1;
135 /* Sequential Number of Video Device */
136 static int video_nr = -1;
137 /* Sequential Number of Radio Device */
138 static int radio_nr = -1;
139
140 /* Grab parameters for the device driver */
141
142 /* Showing parameters under SYSFS */
143 module_param(isoc_mode, int, 0444);
144 module_param(video_debug, int, 0444);
145 module_param(power_on_at_open, int, 0444);
146 module_param(video_nr, int, 0444);
147 module_param(radio_nr, int, 0444);
148
149 MODULE_PARM_DESC(isoc_mode, " Set the default format for ISOC endpoint. Default: 0x60 (Compression On)");
150 MODULE_PARM_DESC(video_debug, " Set the default Debug Mode of the device driver. Default: 0 (Off)");
151 MODULE_PARM_DESC(power_on_at_open, " Set the default device to power on when device is opened. Default: 1 (On)");
152 MODULE_PARM_DESC(video_nr, "Set video device number (/dev/videoX). Default: -1 (autodetect)");
153 MODULE_PARM_DESC(radio_nr, "Set radio device number (/dev/radioX). Default: -1 (autodetect)");
154
155
156 /* Misc stuff */
157 MODULE_AUTHOR(DRIVER_AUTHOR);
158 MODULE_DESCRIPTION(DRIVER_DESC);
159 MODULE_LICENSE(DRIVER_LICENSE);
160 MODULE_VERSION(USBVISION_VERSION_STRING);
161 MODULE_ALIAS(DRIVER_ALIAS);
162
163
164 /*****************************************************************************/
165 /* SYSFS Code - Copied from the stv680.c usb module. */
166 /* Device information is located at /sys/class/video4linux/video0 */
167 /* Device parameters information is located at /sys/module/usbvision */
168 /* Device USB Information is located at */
169 /* /sys/bus/usb/drivers/USBVision Video Grabber */
170 /*****************************************************************************/
171
172 #define YES_NO(x) ((x) ? "Yes" : "No")
173
174 static inline struct usb_usbvision *cd_to_usbvision(struct device *cd)
175 {
176 struct video_device *vdev =
177 container_of(cd, struct video_device, dev);
178 return video_get_drvdata(vdev);
179 }
180
181 static ssize_t show_version(struct device *cd,
182 struct device_attribute *attr, char *buf)
183 {
184 return sprintf(buf, "%s\n", USBVISION_VERSION_STRING);
185 }
186 static DEVICE_ATTR(version, S_IRUGO, show_version, NULL);
187
188 static ssize_t show_model(struct device *cd,
189 struct device_attribute *attr, char *buf)
190 {
191 struct video_device *vdev =
192 container_of(cd, struct video_device, dev);
193 struct usb_usbvision *usbvision = video_get_drvdata(vdev);
194 return sprintf(buf, "%s\n",
195 usbvision_device_data[usbvision->dev_model].model_string);
196 }
197 static DEVICE_ATTR(model, S_IRUGO, show_model, NULL);
198
199 static ssize_t show_hue(struct device *cd,
200 struct device_attribute *attr, char *buf)
201 {
202 struct video_device *vdev =
203 container_of(cd, struct video_device, dev);
204 struct usb_usbvision *usbvision = video_get_drvdata(vdev);
205 struct v4l2_control ctrl;
206 ctrl.id = V4L2_CID_HUE;
207 ctrl.value = 0;
208 if (usbvision->user)
209 call_all(usbvision, core, g_ctrl, &ctrl);
210 return sprintf(buf, "%d\n", ctrl.value);
211 }
212 static DEVICE_ATTR(hue, S_IRUGO, show_hue, NULL);
213
214 static ssize_t show_contrast(struct device *cd,
215 struct device_attribute *attr, char *buf)
216 {
217 struct video_device *vdev =
218 container_of(cd, struct video_device, dev);
219 struct usb_usbvision *usbvision = video_get_drvdata(vdev);
220 struct v4l2_control ctrl;
221 ctrl.id = V4L2_CID_CONTRAST;
222 ctrl.value = 0;
223 if (usbvision->user)
224 call_all(usbvision, core, g_ctrl, &ctrl);
225 return sprintf(buf, "%d\n", ctrl.value);
226 }
227 static DEVICE_ATTR(contrast, S_IRUGO, show_contrast, NULL);
228
229 static ssize_t show_brightness(struct device *cd,
230 struct device_attribute *attr, char *buf)
231 {
232 struct video_device *vdev =
233 container_of(cd, struct video_device, dev);
234 struct usb_usbvision *usbvision = video_get_drvdata(vdev);
235 struct v4l2_control ctrl;
236 ctrl.id = V4L2_CID_BRIGHTNESS;
237 ctrl.value = 0;
238 if (usbvision->user)
239 call_all(usbvision, core, g_ctrl, &ctrl);
240 return sprintf(buf, "%d\n", ctrl.value);
241 }
242 static DEVICE_ATTR(brightness, S_IRUGO, show_brightness, NULL);
243
244 static ssize_t show_saturation(struct device *cd,
245 struct device_attribute *attr, char *buf)
246 {
247 struct video_device *vdev =
248 container_of(cd, struct video_device, dev);
249 struct usb_usbvision *usbvision = video_get_drvdata(vdev);
250 struct v4l2_control ctrl;
251 ctrl.id = V4L2_CID_SATURATION;
252 ctrl.value = 0;
253 if (usbvision->user)
254 call_all(usbvision, core, g_ctrl, &ctrl);
255 return sprintf(buf, "%d\n", ctrl.value);
256 }
257 static DEVICE_ATTR(saturation, S_IRUGO, show_saturation, NULL);
258
259 static ssize_t show_streaming(struct device *cd,
260 struct device_attribute *attr, char *buf)
261 {
262 struct video_device *vdev =
263 container_of(cd, struct video_device, dev);
264 struct usb_usbvision *usbvision = video_get_drvdata(vdev);
265 return sprintf(buf, "%s\n",
266 YES_NO(usbvision->streaming == stream_on ? 1 : 0));
267 }
268 static DEVICE_ATTR(streaming, S_IRUGO, show_streaming, NULL);
269
270 static ssize_t show_compression(struct device *cd,
271 struct device_attribute *attr, char *buf)
272 {
273 struct video_device *vdev =
274 container_of(cd, struct video_device, dev);
275 struct usb_usbvision *usbvision = video_get_drvdata(vdev);
276 return sprintf(buf, "%s\n",
277 YES_NO(usbvision->isoc_mode == ISOC_MODE_COMPRESS));
278 }
279 static DEVICE_ATTR(compression, S_IRUGO, show_compression, NULL);
280
281 static ssize_t show_device_bridge(struct device *cd,
282 struct device_attribute *attr, char *buf)
283 {
284 struct video_device *vdev =
285 container_of(cd, struct video_device, dev);
286 struct usb_usbvision *usbvision = video_get_drvdata(vdev);
287 return sprintf(buf, "%d\n", usbvision->bridge_type);
288 }
289 static DEVICE_ATTR(bridge, S_IRUGO, show_device_bridge, NULL);
290
291 static void usbvision_create_sysfs(struct video_device *vdev)
292 {
293 int res;
294
295 if (!vdev)
296 return;
297 do {
298 res = device_create_file(&vdev->dev, &dev_attr_version);
299 if (res < 0)
300 break;
301 res = device_create_file(&vdev->dev, &dev_attr_model);
302 if (res < 0)
303 break;
304 res = device_create_file(&vdev->dev, &dev_attr_hue);
305 if (res < 0)
306 break;
307 res = device_create_file(&vdev->dev, &dev_attr_contrast);
308 if (res < 0)
309 break;
310 res = device_create_file(&vdev->dev, &dev_attr_brightness);
311 if (res < 0)
312 break;
313 res = device_create_file(&vdev->dev, &dev_attr_saturation);
314 if (res < 0)
315 break;
316 res = device_create_file(&vdev->dev, &dev_attr_streaming);
317 if (res < 0)
318 break;
319 res = device_create_file(&vdev->dev, &dev_attr_compression);
320 if (res < 0)
321 break;
322 res = device_create_file(&vdev->dev, &dev_attr_bridge);
323 if (res >= 0)
324 return;
325 } while (0);
326
327 dev_err(&vdev->dev, "%s error: %d\n", __func__, res);
328 }
329
330 static void usbvision_remove_sysfs(struct video_device *vdev)
331 {
332 if (vdev) {
333 device_remove_file(&vdev->dev, &dev_attr_version);
334 device_remove_file(&vdev->dev, &dev_attr_model);
335 device_remove_file(&vdev->dev, &dev_attr_hue);
336 device_remove_file(&vdev->dev, &dev_attr_contrast);
337 device_remove_file(&vdev->dev, &dev_attr_brightness);
338 device_remove_file(&vdev->dev, &dev_attr_saturation);
339 device_remove_file(&vdev->dev, &dev_attr_streaming);
340 device_remove_file(&vdev->dev, &dev_attr_compression);
341 device_remove_file(&vdev->dev, &dev_attr_bridge);
342 }
343 }
344
345 /*
346 * usbvision_open()
347 *
348 * This is part of Video 4 Linux API. The driver can be opened by one
349 * client only (checks internal counter 'usbvision->user'). The procedure
350 * then allocates buffers needed for video processing.
351 *
352 */
353 static int usbvision_v4l2_open(struct file *file)
354 {
355 struct usb_usbvision *usbvision = video_drvdata(file);
356 int err_code = 0;
357
358 PDEBUG(DBG_IO, "open");
359
360 usbvision_reset_power_off_timer(usbvision);
361
362 if (usbvision->user)
363 err_code = -EBUSY;
364 else {
365 /* Allocate memory for the scratch ring buffer */
366 err_code = usbvision_scratch_alloc(usbvision);
367 if (isoc_mode == ISOC_MODE_COMPRESS) {
368 /* Allocate intermediate decompression buffers
369 only if needed */
370 err_code = usbvision_decompress_alloc(usbvision);
371 }
372 if (err_code) {
373 /* Deallocate all buffers if trouble */
374 usbvision_scratch_free(usbvision);
375 usbvision_decompress_free(usbvision);
376 }
377 }
378
379 /* If so far no errors then we shall start the camera */
380 if (!err_code) {
381 if (usbvision->power == 0) {
382 usbvision_power_on(usbvision);
383 usbvision_i2c_register(usbvision);
384 }
385
386 /* Send init sequence only once, it's large! */
387 if (!usbvision->initialized) {
388 int setup_ok = 0;
389 setup_ok = usbvision_setup(usbvision, isoc_mode);
390 if (setup_ok)
391 usbvision->initialized = 1;
392 else
393 err_code = -EBUSY;
394 }
395
396 if (!err_code) {
397 usbvision_begin_streaming(usbvision);
398 err_code = usbvision_init_isoc(usbvision);
399 /* device must be initialized before isoc transfer */
400 usbvision_muxsel(usbvision, 0);
401 usbvision->user++;
402 } else {
403 if (power_on_at_open) {
404 usbvision_i2c_unregister(usbvision);
405 usbvision_power_off(usbvision);
406 usbvision->initialized = 0;
407 }
408 }
409 }
410
411 /* prepare queues */
412 usbvision_empty_framequeues(usbvision);
413
414 PDEBUG(DBG_IO, "success");
415 return err_code;
416 }
417
418 /*
419 * usbvision_v4l2_close()
420 *
421 * This is part of Video 4 Linux API. The procedure
422 * stops streaming and deallocates all buffers that were earlier
423 * allocated in usbvision_v4l2_open().
424 *
425 */
426 static int usbvision_v4l2_close(struct file *file)
427 {
428 struct usb_usbvision *usbvision = video_drvdata(file);
429
430 PDEBUG(DBG_IO, "close");
431
432 usbvision_audio_off(usbvision);
433 usbvision_restart_isoc(usbvision);
434 usbvision_stop_isoc(usbvision);
435
436 usbvision_decompress_free(usbvision);
437 usbvision_frames_free(usbvision);
438 usbvision_empty_framequeues(usbvision);
439 usbvision_scratch_free(usbvision);
440
441 usbvision->user--;
442
443 if (power_on_at_open) {
444 /* power off in a little while
445 to avoid off/on every close/open short sequences */
446 usbvision_set_power_off_timer(usbvision);
447 usbvision->initialized = 0;
448 }
449
450 if (usbvision->remove_pending) {
451 printk(KERN_INFO "%s: Final disconnect\n", __func__);
452 usbvision_release(usbvision);
453 }
454
455 PDEBUG(DBG_IO, "success");
456 return 0;
457 }
458
459
460 /*
461 * usbvision_ioctl()
462 *
463 * This is part of Video 4 Linux API. The procedure handles ioctl() calls.
464 *
465 */
466 #ifdef CONFIG_VIDEO_ADV_DEBUG
467 static int vidioc_g_register(struct file *file, void *priv,
468 struct v4l2_dbg_register *reg)
469 {
470 struct usb_usbvision *usbvision = video_drvdata(file);
471 int err_code;
472
473 if (!v4l2_chip_match_host(&reg->match))
474 return -EINVAL;
475 /* NT100x has a 8-bit register space */
476 err_code = usbvision_read_reg(usbvision, reg->reg&0xff);
477 if (err_code < 0) {
478 dev_err(&usbvision->vdev->dev,
479 "%s: VIDIOC_DBG_G_REGISTER failed: error %d\n",
480 __func__, err_code);
481 return err_code;
482 }
483 reg->val = err_code;
484 reg->size = 1;
485 return 0;
486 }
487
488 static int vidioc_s_register(struct file *file, void *priv,
489 struct v4l2_dbg_register *reg)
490 {
491 struct usb_usbvision *usbvision = video_drvdata(file);
492 int err_code;
493
494 if (!v4l2_chip_match_host(&reg->match))
495 return -EINVAL;
496 /* NT100x has a 8-bit register space */
497 err_code = usbvision_write_reg(usbvision, reg->reg & 0xff, reg->val);
498 if (err_code < 0) {
499 dev_err(&usbvision->vdev->dev,
500 "%s: VIDIOC_DBG_S_REGISTER failed: error %d\n",
501 __func__, err_code);
502 return err_code;
503 }
504 return 0;
505 }
506 #endif
507
508 static int vidioc_querycap(struct file *file, void *priv,
509 struct v4l2_capability *vc)
510 {
511 struct usb_usbvision *usbvision = video_drvdata(file);
512
513 strlcpy(vc->driver, "USBVision", sizeof(vc->driver));
514 strlcpy(vc->card,
515 usbvision_device_data[usbvision->dev_model].model_string,
516 sizeof(vc->card));
517 usb_make_path(usbvision->dev, vc->bus_info, sizeof(vc->bus_info));
518 vc->version = USBVISION_DRIVER_VERSION;
519 vc->capabilities = V4L2_CAP_VIDEO_CAPTURE |
520 V4L2_CAP_AUDIO |
521 V4L2_CAP_READWRITE |
522 V4L2_CAP_STREAMING |
523 (usbvision->have_tuner ? V4L2_CAP_TUNER : 0);
524 return 0;
525 }
526
527 static int vidioc_enum_input(struct file *file, void *priv,
528 struct v4l2_input *vi)
529 {
530 struct usb_usbvision *usbvision = video_drvdata(file);
531 int chan;
532
533 if (vi->index >= usbvision->video_inputs)
534 return -EINVAL;
535 if (usbvision->have_tuner)
536 chan = vi->index;
537 else
538 chan = vi->index + 1; /* skip Television string*/
539
540 /* Determine the requested input characteristics
541 specific for each usbvision card model */
542 switch (chan) {
543 case 0:
544 if (usbvision_device_data[usbvision->dev_model].video_channels == 4) {
545 strcpy(vi->name, "White Video Input");
546 } else {
547 strcpy(vi->name, "Television");
548 vi->type = V4L2_INPUT_TYPE_TUNER;
549 vi->audioset = 1;
550 vi->tuner = chan;
551 vi->std = USBVISION_NORMS;
552 }
553 break;
554 case 1:
555 vi->type = V4L2_INPUT_TYPE_CAMERA;
556 if (usbvision_device_data[usbvision->dev_model].video_channels == 4)
557 strcpy(vi->name, "Green Video Input");
558 else
559 strcpy(vi->name, "Composite Video Input");
560 vi->std = V4L2_STD_PAL;
561 break;
562 case 2:
563 vi->type = V4L2_INPUT_TYPE_CAMERA;
564 if (usbvision_device_data[usbvision->dev_model].video_channels == 4)
565 strcpy(vi->name, "Yellow Video Input");
566 else
567 strcpy(vi->name, "S-Video Input");
568 vi->std = V4L2_STD_PAL;
569 break;
570 case 3:
571 vi->type = V4L2_INPUT_TYPE_CAMERA;
572 strcpy(vi->name, "Red Video Input");
573 vi->std = V4L2_STD_PAL;
574 break;
575 }
576 return 0;
577 }
578
579 static int vidioc_g_input(struct file *file, void *priv, unsigned int *input)
580 {
581 struct usb_usbvision *usbvision = video_drvdata(file);
582
583 *input = usbvision->ctl_input;
584 return 0;
585 }
586
587 static int vidioc_s_input(struct file *file, void *priv, unsigned int input)
588 {
589 struct usb_usbvision *usbvision = video_drvdata(file);
590
591 if (input >= usbvision->video_inputs)
592 return -EINVAL;
593
594 usbvision_muxsel(usbvision, input);
595 usbvision_set_input(usbvision);
596 usbvision_set_output(usbvision,
597 usbvision->curwidth,
598 usbvision->curheight);
599 return 0;
600 }
601
602 static int vidioc_s_std(struct file *file, void *priv, v4l2_std_id *id)
603 {
604 struct usb_usbvision *usbvision = video_drvdata(file);
605
606 usbvision->tvnorm_id = *id;
607
608 call_all(usbvision, core, s_std, usbvision->tvnorm_id);
609 /* propagate the change to the decoder */
610 usbvision_muxsel(usbvision, usbvision->ctl_input);
611
612 return 0;
613 }
614
615 static int vidioc_g_tuner(struct file *file, void *priv,
616 struct v4l2_tuner *vt)
617 {
618 struct usb_usbvision *usbvision = video_drvdata(file);
619
620 if (!usbvision->have_tuner || vt->index) /* Only tuner 0 */
621 return -EINVAL;
622 if (usbvision->radio) {
623 strcpy(vt->name, "Radio");
624 vt->type = V4L2_TUNER_RADIO;
625 } else {
626 strcpy(vt->name, "Television");
627 }
628 /* Let clients fill in the remainder of this struct */
629 call_all(usbvision, tuner, g_tuner, vt);
630
631 return 0;
632 }
633
634 static int vidioc_s_tuner(struct file *file, void *priv,
635 struct v4l2_tuner *vt)
636 {
637 struct usb_usbvision *usbvision = video_drvdata(file);
638
639 /* Only no or one tuner for now */
640 if (!usbvision->have_tuner || vt->index)
641 return -EINVAL;
642 /* let clients handle this */
643 call_all(usbvision, tuner, s_tuner, vt);
644
645 return 0;
646 }
647
648 static int vidioc_g_frequency(struct file *file, void *priv,
649 struct v4l2_frequency *freq)
650 {
651 struct usb_usbvision *usbvision = video_drvdata(file);
652
653 freq->tuner = 0; /* Only one tuner */
654 if (usbvision->radio)
655 freq->type = V4L2_TUNER_RADIO;
656 else
657 freq->type = V4L2_TUNER_ANALOG_TV;
658 freq->frequency = usbvision->freq;
659
660 return 0;
661 }
662
663 static int vidioc_s_frequency(struct file *file, void *priv,
664 struct v4l2_frequency *freq)
665 {
666 struct usb_usbvision *usbvision = video_drvdata(file);
667
668 /* Only no or one tuner for now */
669 if (!usbvision->have_tuner || freq->tuner)
670 return -EINVAL;
671
672 usbvision->freq = freq->frequency;
673 call_all(usbvision, tuner, s_frequency, freq);
674
675 return 0;
676 }
677
678 static int vidioc_g_audio(struct file *file, void *priv, struct v4l2_audio *a)
679 {
680 struct usb_usbvision *usbvision = video_drvdata(file);
681
682 if (usbvision->radio)
683 strcpy(a->name, "Radio");
684 else
685 strcpy(a->name, "TV");
686
687 return 0;
688 }
689
690 static int vidioc_s_audio(struct file *file, void *fh,
691 struct v4l2_audio *a)
692 {
693 if (a->index)
694 return -EINVAL;
695 return 0;
696 }
697
698 static int vidioc_queryctrl(struct file *file, void *priv,
699 struct v4l2_queryctrl *ctrl)
700 {
701 struct usb_usbvision *usbvision = video_drvdata(file);
702
703 call_all(usbvision, core, queryctrl, ctrl);
704
705 if (!ctrl->type)
706 return -EINVAL;
707
708 return 0;
709 }
710
711 static int vidioc_g_ctrl(struct file *file, void *priv,
712 struct v4l2_control *ctrl)
713 {
714 struct usb_usbvision *usbvision = video_drvdata(file);
715
716 call_all(usbvision, core, g_ctrl, ctrl);
717 return 0;
718 }
719
720 static int vidioc_s_ctrl(struct file *file, void *priv,
721 struct v4l2_control *ctrl)
722 {
723 struct usb_usbvision *usbvision = video_drvdata(file);
724
725 call_all(usbvision, core, s_ctrl, ctrl);
726 return 0;
727 }
728
729 static int vidioc_reqbufs(struct file *file,
730 void *priv, struct v4l2_requestbuffers *vr)
731 {
732 struct usb_usbvision *usbvision = video_drvdata(file);
733 int ret;
734
735 RESTRICT_TO_RANGE(vr->count, 1, USBVISION_NUMFRAMES);
736
737 /* Check input validity:
738 the user must do a VIDEO CAPTURE and MMAP method. */
739 if (vr->memory != V4L2_MEMORY_MMAP)
740 return -EINVAL;
741
742 if (usbvision->streaming == stream_on) {
743 ret = usbvision_stream_interrupt(usbvision);
744 if (ret)
745 return ret;
746 }
747
748 usbvision_frames_free(usbvision);
749 usbvision_empty_framequeues(usbvision);
750 vr->count = usbvision_frames_alloc(usbvision, vr->count);
751
752 usbvision->cur_frame = NULL;
753
754 return 0;
755 }
756
757 static int vidioc_querybuf(struct file *file,
758 void *priv, struct v4l2_buffer *vb)
759 {
760 struct usb_usbvision *usbvision = video_drvdata(file);
761 struct usbvision_frame *frame;
762
763 /* FIXME : must control
764 that buffers are mapped (VIDIOC_REQBUFS has been called) */
765 if (vb->index >= usbvision->num_frames)
766 return -EINVAL;
767 /* Updating the corresponding frame state */
768 vb->flags = 0;
769 frame = &usbvision->frame[vb->index];
770 if (frame->grabstate >= frame_state_ready)
771 vb->flags |= V4L2_BUF_FLAG_QUEUED;
772 if (frame->grabstate >= frame_state_done)
773 vb->flags |= V4L2_BUF_FLAG_DONE;
774 if (frame->grabstate == frame_state_unused)
775 vb->flags |= V4L2_BUF_FLAG_MAPPED;
776 vb->memory = V4L2_MEMORY_MMAP;
777
778 vb->m.offset = vb->index * PAGE_ALIGN(usbvision->max_frame_size);
779
780 vb->memory = V4L2_MEMORY_MMAP;
781 vb->field = V4L2_FIELD_NONE;
782 vb->length = usbvision->curwidth *
783 usbvision->curheight *
784 usbvision->palette.bytes_per_pixel;
785 vb->timestamp = usbvision->frame[vb->index].timestamp;
786 vb->sequence = usbvision->frame[vb->index].sequence;
787 return 0;
788 }
789
790 static int vidioc_qbuf(struct file *file, void *priv, struct v4l2_buffer *vb)
791 {
792 struct usb_usbvision *usbvision = video_drvdata(file);
793 struct usbvision_frame *frame;
794 unsigned long lock_flags;
795
796 /* FIXME : works only on VIDEO_CAPTURE MODE, MMAP. */
797 if (vb->index >= usbvision->num_frames)
798 return -EINVAL;
799
800 frame = &usbvision->frame[vb->index];
801
802 if (frame->grabstate != frame_state_unused)
803 return -EAGAIN;
804
805 /* Mark it as ready and enqueue frame */
806 frame->grabstate = frame_state_ready;
807 frame->scanstate = scan_state_scanning;
808 frame->scanlength = 0; /* Accumulated in usbvision_parse_data() */
809
810 vb->flags &= ~V4L2_BUF_FLAG_DONE;
811
812 /* set v4l2_format index */
813 frame->v4l2_format = usbvision->palette;
814
815 spin_lock_irqsave(&usbvision->queue_lock, lock_flags);
816 list_add_tail(&usbvision->frame[vb->index].frame, &usbvision->inqueue);
817 spin_unlock_irqrestore(&usbvision->queue_lock, lock_flags);
818
819 return 0;
820 }
821
822 static int vidioc_dqbuf(struct file *file, void *priv, struct v4l2_buffer *vb)
823 {
824 struct usb_usbvision *usbvision = video_drvdata(file);
825 int ret;
826 struct usbvision_frame *f;
827 unsigned long lock_flags;
828
829 if (list_empty(&(usbvision->outqueue))) {
830 if (usbvision->streaming == stream_idle)
831 return -EINVAL;
832 ret = wait_event_interruptible
833 (usbvision->wait_frame,
834 !list_empty(&(usbvision->outqueue)));
835 if (ret)
836 return ret;
837 }
838
839 spin_lock_irqsave(&usbvision->queue_lock, lock_flags);
840 f = list_entry(usbvision->outqueue.next,
841 struct usbvision_frame, frame);
842 list_del(usbvision->outqueue.next);
843 spin_unlock_irqrestore(&usbvision->queue_lock, lock_flags);
844
845 f->grabstate = frame_state_unused;
846
847 vb->memory = V4L2_MEMORY_MMAP;
848 vb->flags = V4L2_BUF_FLAG_MAPPED |
849 V4L2_BUF_FLAG_QUEUED |
850 V4L2_BUF_FLAG_DONE;
851 vb->index = f->index;
852 vb->sequence = f->sequence;
853 vb->timestamp = f->timestamp;
854 vb->field = V4L2_FIELD_NONE;
855 vb->bytesused = f->scanlength;
856
857 return 0;
858 }
859
860 static int vidioc_streamon(struct file *file, void *priv, enum v4l2_buf_type i)
861 {
862 struct usb_usbvision *usbvision = video_drvdata(file);
863
864 usbvision->streaming = stream_on;
865 call_all(usbvision, video, s_stream, 1);
866
867 return 0;
868 }
869
870 static int vidioc_streamoff(struct file *file,
871 void *priv, enum v4l2_buf_type type)
872 {
873 struct usb_usbvision *usbvision = video_drvdata(file);
874
875 if (type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
876 return -EINVAL;
877
878 if (usbvision->streaming == stream_on) {
879 usbvision_stream_interrupt(usbvision);
880 /* Stop all video streamings */
881 call_all(usbvision, video, s_stream, 0);
882 }
883 usbvision_empty_framequeues(usbvision);
884
885 return 0;
886 }
887
888 static int vidioc_enum_fmt_vid_cap(struct file *file, void *priv,
889 struct v4l2_fmtdesc *vfd)
890 {
891 if (vfd->index >= USBVISION_SUPPORTED_PALETTES - 1)
892 return -EINVAL;
893 strcpy(vfd->description, usbvision_v4l2_format[vfd->index].desc);
894 vfd->pixelformat = usbvision_v4l2_format[vfd->index].format;
895 return 0;
896 }
897
898 static int vidioc_g_fmt_vid_cap(struct file *file, void *priv,
899 struct v4l2_format *vf)
900 {
901 struct usb_usbvision *usbvision = video_drvdata(file);
902 vf->fmt.pix.width = usbvision->curwidth;
903 vf->fmt.pix.height = usbvision->curheight;
904 vf->fmt.pix.pixelformat = usbvision->palette.format;
905 vf->fmt.pix.bytesperline =
906 usbvision->curwidth * usbvision->palette.bytes_per_pixel;
907 vf->fmt.pix.sizeimage = vf->fmt.pix.bytesperline * usbvision->curheight;
908 vf->fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M;
909 vf->fmt.pix.field = V4L2_FIELD_NONE; /* Always progressive image */
910
911 return 0;
912 }
913
914 static int vidioc_try_fmt_vid_cap(struct file *file, void *priv,
915 struct v4l2_format *vf)
916 {
917 struct usb_usbvision *usbvision = video_drvdata(file);
918 int format_idx;
919
920 /* Find requested format in available ones */
921 for (format_idx = 0; format_idx < USBVISION_SUPPORTED_PALETTES; format_idx++) {
922 if (vf->fmt.pix.pixelformat ==
923 usbvision_v4l2_format[format_idx].format) {
924 usbvision->palette = usbvision_v4l2_format[format_idx];
925 break;
926 }
927 }
928 /* robustness */
929 if (format_idx == USBVISION_SUPPORTED_PALETTES)
930 return -EINVAL;
931 RESTRICT_TO_RANGE(vf->fmt.pix.width, MIN_FRAME_WIDTH, MAX_FRAME_WIDTH);
932 RESTRICT_TO_RANGE(vf->fmt.pix.height, MIN_FRAME_HEIGHT, MAX_FRAME_HEIGHT);
933
934 vf->fmt.pix.bytesperline = vf->fmt.pix.width*
935 usbvision->palette.bytes_per_pixel;
936 vf->fmt.pix.sizeimage = vf->fmt.pix.bytesperline*vf->fmt.pix.height;
937
938 return 0;
939 }
940
941 static int vidioc_s_fmt_vid_cap(struct file *file, void *priv,
942 struct v4l2_format *vf)
943 {
944 struct usb_usbvision *usbvision = video_drvdata(file);
945 int ret;
946
947 ret = vidioc_try_fmt_vid_cap(file, priv, vf);
948 if (ret)
949 return ret;
950
951 /* stop io in case it is already in progress */
952 if (usbvision->streaming == stream_on) {
953 ret = usbvision_stream_interrupt(usbvision);
954 if (ret)
955 return ret;
956 }
957 usbvision_frames_free(usbvision);
958 usbvision_empty_framequeues(usbvision);
959
960 usbvision->cur_frame = NULL;
961
962 /* by now we are committed to the new data... */
963 usbvision_set_output(usbvision, vf->fmt.pix.width, vf->fmt.pix.height);
964
965 return 0;
966 }
967
968 static ssize_t usbvision_v4l2_read(struct file *file, char __user *buf,
969 size_t count, loff_t *ppos)
970 {
971 struct usb_usbvision *usbvision = video_drvdata(file);
972 int noblock = file->f_flags & O_NONBLOCK;
973 unsigned long lock_flags;
974 int ret, i;
975 struct usbvision_frame *frame;
976
977 PDEBUG(DBG_IO, "%s: %ld bytes, noblock=%d", __func__,
978 (unsigned long)count, noblock);
979
980 if (!USBVISION_IS_OPERATIONAL(usbvision) || (buf == NULL))
981 return -EFAULT;
982
983 /* This entry point is compatible with the mmap routines
984 so that a user can do either VIDIOC_QBUF/VIDIOC_DQBUF
985 to get frames or call read on the device. */
986 if (!usbvision->num_frames) {
987 /* First, allocate some frames to work with
988 if this has not been done with VIDIOC_REQBUF */
989 usbvision_frames_free(usbvision);
990 usbvision_empty_framequeues(usbvision);
991 usbvision_frames_alloc(usbvision, USBVISION_NUMFRAMES);
992 }
993
994 if (usbvision->streaming != stream_on) {
995 /* no stream is running, make it running ! */
996 usbvision->streaming = stream_on;
997 call_all(usbvision, video, s_stream, 1);
998 }
999
1000 /* Then, enqueue as many frames as possible
1001 (like a user of VIDIOC_QBUF would do) */
1002 for (i = 0; i < usbvision->num_frames; i++) {
1003 frame = &usbvision->frame[i];
1004 if (frame->grabstate == frame_state_unused) {
1005 /* Mark it as ready and enqueue frame */
1006 frame->grabstate = frame_state_ready;
1007 frame->scanstate = scan_state_scanning;
1008 /* Accumulated in usbvision_parse_data() */
1009 frame->scanlength = 0;
1010
1011 /* set v4l2_format index */
1012 frame->v4l2_format = usbvision->palette;
1013
1014 spin_lock_irqsave(&usbvision->queue_lock, lock_flags);
1015 list_add_tail(&frame->frame, &usbvision->inqueue);
1016 spin_unlock_irqrestore(&usbvision->queue_lock,
1017 lock_flags);
1018 }
1019 }
1020
1021 /* Then try to steal a frame (like a VIDIOC_DQBUF would do) */
1022 if (list_empty(&(usbvision->outqueue))) {
1023 if (noblock)
1024 return -EAGAIN;
1025
1026 ret = wait_event_interruptible
1027 (usbvision->wait_frame,
1028 !list_empty(&(usbvision->outqueue)));
1029 if (ret)
1030 return ret;
1031 }
1032
1033 spin_lock_irqsave(&usbvision->queue_lock, lock_flags);
1034 frame = list_entry(usbvision->outqueue.next,
1035 struct usbvision_frame, frame);
1036 list_del(usbvision->outqueue.next);
1037 spin_unlock_irqrestore(&usbvision->queue_lock, lock_flags);
1038
1039 /* An error returns an empty frame */
1040 if (frame->grabstate == frame_state_error) {
1041 frame->bytes_read = 0;
1042 return 0;
1043 }
1044
1045 PDEBUG(DBG_IO, "%s: frmx=%d, bytes_read=%ld, scanlength=%ld",
1046 __func__,
1047 frame->index, frame->bytes_read, frame->scanlength);
1048
1049 /* copy bytes to user space; we allow for partials reads */
1050 if ((count + frame->bytes_read) > (unsigned long)frame->scanlength)
1051 count = frame->scanlength - frame->bytes_read;
1052
1053 if (copy_to_user(buf, frame->data + frame->bytes_read, count))
1054 return -EFAULT;
1055
1056 frame->bytes_read += count;
1057 PDEBUG(DBG_IO, "%s: {copy} count used=%ld, new bytes_read=%ld",
1058 __func__,
1059 (unsigned long)count, frame->bytes_read);
1060
1061 /* For now, forget the frame if it has not been read in one shot. */
1062 /* if (frame->bytes_read >= frame->scanlength) {*/ /* All data has been read */
1063 frame->bytes_read = 0;
1064
1065 /* Mark it as available to be used again. */
1066 frame->grabstate = frame_state_unused;
1067 /* } */
1068
1069 return count;
1070 }
1071
1072 static int usbvision_v4l2_mmap(struct file *file, struct vm_area_struct *vma)
1073 {
1074 unsigned long size = vma->vm_end - vma->vm_start,
1075 start = vma->vm_start;
1076 void *pos;
1077 u32 i;
1078 struct usb_usbvision *usbvision = video_drvdata(file);
1079
1080 PDEBUG(DBG_MMAP, "mmap");
1081
1082 if (!USBVISION_IS_OPERATIONAL(usbvision))
1083 return -EFAULT;
1084
1085 if (!(vma->vm_flags & VM_WRITE) ||
1086 size != PAGE_ALIGN(usbvision->max_frame_size)) {
1087 return -EINVAL;
1088 }
1089
1090 for (i = 0; i < usbvision->num_frames; i++) {
1091 if (((PAGE_ALIGN(usbvision->max_frame_size)*i) >> PAGE_SHIFT) ==
1092 vma->vm_pgoff)
1093 break;
1094 }
1095 if (i == usbvision->num_frames) {
1096 PDEBUG(DBG_MMAP,
1097 "mmap: user supplied mapping address is out of range");
1098 return -EINVAL;
1099 }
1100
1101 /* VM_IO is eventually going to replace PageReserved altogether */
1102 vma->vm_flags |= VM_IO;
1103 vma->vm_flags |= VM_RESERVED; /* avoid to swap out this VMA */
1104
1105 pos = usbvision->frame[i].data;
1106 while (size > 0) {
1107 if (vm_insert_page(vma, start, vmalloc_to_page(pos))) {
1108 PDEBUG(DBG_MMAP, "mmap: vm_insert_page failed");
1109 return -EAGAIN;
1110 }
1111 start += PAGE_SIZE;
1112 pos += PAGE_SIZE;
1113 size -= PAGE_SIZE;
1114 }
1115
1116 return 0;
1117 }
1118
1119
1120 /*
1121 * Here comes the stuff for radio on usbvision based devices
1122 *
1123 */
1124 static int usbvision_radio_open(struct file *file)
1125 {
1126 struct usb_usbvision *usbvision = video_drvdata(file);
1127 int err_code = 0;
1128
1129 PDEBUG(DBG_IO, "%s:", __func__);
1130
1131 if (usbvision->user) {
1132 dev_err(&usbvision->rdev->dev,
1133 "%s: Someone tried to open an already opened USBVision Radio!\n",
1134 __func__);
1135 err_code = -EBUSY;
1136 } else {
1137 if (power_on_at_open) {
1138 usbvision_reset_power_off_timer(usbvision);
1139 if (usbvision->power == 0) {
1140 usbvision_power_on(usbvision);
1141 usbvision_i2c_register(usbvision);
1142 }
1143 }
1144
1145 /* Alternate interface 1 is is the biggest frame size */
1146 err_code = usbvision_set_alternate(usbvision);
1147 if (err_code < 0) {
1148 usbvision->last_error = err_code;
1149 err_code = -EBUSY;
1150 goto out;
1151 }
1152
1153 /* If so far no errors then we shall start the radio */
1154 usbvision->radio = 1;
1155 call_all(usbvision, tuner, s_radio);
1156 usbvision_set_audio(usbvision, USBVISION_AUDIO_RADIO);
1157 usbvision->user++;
1158 }
1159
1160 if (err_code) {
1161 if (power_on_at_open) {
1162 usbvision_i2c_unregister(usbvision);
1163 usbvision_power_off(usbvision);
1164 usbvision->initialized = 0;
1165 }
1166 }
1167 out:
1168 return err_code;
1169 }
1170
1171
1172 static int usbvision_radio_close(struct file *file)
1173 {
1174 struct usb_usbvision *usbvision = video_drvdata(file);
1175 int err_code = 0;
1176
1177 PDEBUG(DBG_IO, "");
1178
1179 /* Set packet size to 0 */
1180 usbvision->iface_alt = 0;
1181 err_code = usb_set_interface(usbvision->dev, usbvision->iface,
1182 usbvision->iface_alt);
1183
1184 usbvision_audio_off(usbvision);
1185 usbvision->radio = 0;
1186 usbvision->user--;
1187
1188 if (power_on_at_open) {
1189 usbvision_set_power_off_timer(usbvision);
1190 usbvision->initialized = 0;
1191 }
1192
1193 if (usbvision->remove_pending) {
1194 printk(KERN_INFO "%s: Final disconnect\n", __func__);
1195 usbvision_release(usbvision);
1196 }
1197
1198 PDEBUG(DBG_IO, "success");
1199 return err_code;
1200 }
1201
1202 /* Video registration stuff */
1203
1204 /* Video template */
1205 static const struct v4l2_file_operations usbvision_fops = {
1206 .owner = THIS_MODULE,
1207 .open = usbvision_v4l2_open,
1208 .release = usbvision_v4l2_close,
1209 .read = usbvision_v4l2_read,
1210 .mmap = usbvision_v4l2_mmap,
1211 .unlocked_ioctl = video_ioctl2,
1212 /* .poll = video_poll, */
1213 };
1214
1215 static const struct v4l2_ioctl_ops usbvision_ioctl_ops = {
1216 .vidioc_querycap = vidioc_querycap,
1217 .vidioc_enum_fmt_vid_cap = vidioc_enum_fmt_vid_cap,
1218 .vidioc_g_fmt_vid_cap = vidioc_g_fmt_vid_cap,
1219 .vidioc_try_fmt_vid_cap = vidioc_try_fmt_vid_cap,
1220 .vidioc_s_fmt_vid_cap = vidioc_s_fmt_vid_cap,
1221 .vidioc_reqbufs = vidioc_reqbufs,
1222 .vidioc_querybuf = vidioc_querybuf,
1223 .vidioc_qbuf = vidioc_qbuf,
1224 .vidioc_dqbuf = vidioc_dqbuf,
1225 .vidioc_s_std = vidioc_s_std,
1226 .vidioc_enum_input = vidioc_enum_input,
1227 .vidioc_g_input = vidioc_g_input,
1228 .vidioc_s_input = vidioc_s_input,
1229 .vidioc_queryctrl = vidioc_queryctrl,
1230 .vidioc_g_audio = vidioc_g_audio,
1231 .vidioc_s_audio = vidioc_s_audio,
1232 .vidioc_g_ctrl = vidioc_g_ctrl,
1233 .vidioc_s_ctrl = vidioc_s_ctrl,
1234 .vidioc_streamon = vidioc_streamon,
1235 .vidioc_streamoff = vidioc_streamoff,
1236 .vidioc_g_tuner = vidioc_g_tuner,
1237 .vidioc_s_tuner = vidioc_s_tuner,
1238 .vidioc_g_frequency = vidioc_g_frequency,
1239 .vidioc_s_frequency = vidioc_s_frequency,
1240 #ifdef CONFIG_VIDEO_ADV_DEBUG
1241 .vidioc_g_register = vidioc_g_register,
1242 .vidioc_s_register = vidioc_s_register,
1243 #endif
1244 };
1245
1246 static struct video_device usbvision_video_template = {
1247 .fops = &usbvision_fops,
1248 .ioctl_ops = &usbvision_ioctl_ops,
1249 .name = "usbvision-video",
1250 .release = video_device_release,
1251 .tvnorms = USBVISION_NORMS,
1252 .current_norm = V4L2_STD_PAL
1253 };
1254
1255
1256 /* Radio template */
1257 static const struct v4l2_file_operations usbvision_radio_fops = {
1258 .owner = THIS_MODULE,
1259 .open = usbvision_radio_open,
1260 .release = usbvision_radio_close,
1261 .unlocked_ioctl = video_ioctl2,
1262 };
1263
1264 static const struct v4l2_ioctl_ops usbvision_radio_ioctl_ops = {
1265 .vidioc_querycap = vidioc_querycap,
1266 .vidioc_enum_input = vidioc_enum_input,
1267 .vidioc_g_input = vidioc_g_input,
1268 .vidioc_s_input = vidioc_s_input,
1269 .vidioc_queryctrl = vidioc_queryctrl,
1270 .vidioc_g_audio = vidioc_g_audio,
1271 .vidioc_s_audio = vidioc_s_audio,
1272 .vidioc_g_ctrl = vidioc_g_ctrl,
1273 .vidioc_s_ctrl = vidioc_s_ctrl,
1274 .vidioc_g_tuner = vidioc_g_tuner,
1275 .vidioc_s_tuner = vidioc_s_tuner,
1276 .vidioc_g_frequency = vidioc_g_frequency,
1277 .vidioc_s_frequency = vidioc_s_frequency,
1278 };
1279
1280 static struct video_device usbvision_radio_template = {
1281 .fops = &usbvision_radio_fops,
1282 .name = "usbvision-radio",
1283 .release = video_device_release,
1284 .ioctl_ops = &usbvision_radio_ioctl_ops,
1285
1286 .tvnorms = USBVISION_NORMS,
1287 .current_norm = V4L2_STD_PAL
1288 };
1289
1290
1291 static struct video_device *usbvision_vdev_init(struct usb_usbvision *usbvision,
1292 struct video_device *vdev_template,
1293 char *name)
1294 {
1295 struct usb_device *usb_dev = usbvision->dev;
1296 struct video_device *vdev;
1297
1298 if (usb_dev == NULL) {
1299 dev_err(&usbvision->dev->dev,
1300 "%s: usbvision->dev is not set\n", __func__);
1301 return NULL;
1302 }
1303
1304 vdev = video_device_alloc();
1305 if (NULL == vdev)
1306 return NULL;
1307 *vdev = *vdev_template;
1308 vdev->lock = &usbvision->v4l2_lock;
1309 vdev->v4l2_dev = &usbvision->v4l2_dev;
1310 snprintf(vdev->name, sizeof(vdev->name), "%s", name);
1311 video_set_drvdata(vdev, usbvision);
1312 return vdev;
1313 }
1314
1315 /* unregister video4linux devices */
1316 static void usbvision_unregister_video(struct usb_usbvision *usbvision)
1317 {
1318 /* Radio Device: */
1319 if (usbvision->rdev) {
1320 PDEBUG(DBG_PROBE, "unregister %s [v4l2]",
1321 video_device_node_name(usbvision->rdev));
1322 if (video_is_registered(usbvision->rdev))
1323 video_unregister_device(usbvision->rdev);
1324 else
1325 video_device_release(usbvision->rdev);
1326 usbvision->rdev = NULL;
1327 }
1328
1329 /* Video Device: */
1330 if (usbvision->vdev) {
1331 PDEBUG(DBG_PROBE, "unregister %s [v4l2]",
1332 video_device_node_name(usbvision->vdev));
1333 if (video_is_registered(usbvision->vdev))
1334 video_unregister_device(usbvision->vdev);
1335 else
1336 video_device_release(usbvision->vdev);
1337 usbvision->vdev = NULL;
1338 }
1339 }
1340
1341 /* register video4linux devices */
1342 static int __devinit usbvision_register_video(struct usb_usbvision *usbvision)
1343 {
1344 /* Video Device: */
1345 usbvision->vdev = usbvision_vdev_init(usbvision,
1346 &usbvision_video_template,
1347 "USBVision Video");
1348 if (usbvision->vdev == NULL)
1349 goto err_exit;
1350 if (video_register_device(usbvision->vdev, VFL_TYPE_GRABBER, video_nr) < 0)
1351 goto err_exit;
1352 printk(KERN_INFO "USBVision[%d]: registered USBVision Video device %s [v4l2]\n",
1353 usbvision->nr, video_device_node_name(usbvision->vdev));
1354
1355 /* Radio Device: */
1356 if (usbvision_device_data[usbvision->dev_model].radio) {
1357 /* usbvision has radio */
1358 usbvision->rdev = usbvision_vdev_init(usbvision,
1359 &usbvision_radio_template,
1360 "USBVision Radio");
1361 if (usbvision->rdev == NULL)
1362 goto err_exit;
1363 if (video_register_device(usbvision->rdev, VFL_TYPE_RADIO, radio_nr) < 0)
1364 goto err_exit;
1365 printk(KERN_INFO "USBVision[%d]: registered USBVision Radio device %s [v4l2]\n",
1366 usbvision->nr, video_device_node_name(usbvision->rdev));
1367 }
1368 /* all done */
1369 return 0;
1370
1371 err_exit:
1372 dev_err(&usbvision->dev->dev,
1373 "USBVision[%d]: video_register_device() failed\n",
1374 usbvision->nr);
1375 usbvision_unregister_video(usbvision);
1376 return -1;
1377 }
1378
1379 /*
1380 * usbvision_alloc()
1381 *
1382 * This code allocates the struct usb_usbvision.
1383 * It is filled with default values.
1384 *
1385 * Returns NULL on error, a pointer to usb_usbvision else.
1386 *
1387 */
1388 static struct usb_usbvision *usbvision_alloc(struct usb_device *dev,
1389 struct usb_interface *intf)
1390 {
1391 struct usb_usbvision *usbvision;
1392
1393 usbvision = kzalloc(sizeof(struct usb_usbvision), GFP_KERNEL);
1394 if (usbvision == NULL)
1395 return NULL;
1396
1397 usbvision->dev = dev;
1398 if (v4l2_device_register(&intf->dev, &usbvision->v4l2_dev))
1399 goto err_free;
1400
1401 mutex_init(&usbvision->v4l2_lock);
1402
1403 /* prepare control urb for control messages during interrupts */
1404 usbvision->ctrl_urb = usb_alloc_urb(USBVISION_URB_FRAMES, GFP_KERNEL);
1405 if (usbvision->ctrl_urb == NULL)
1406 goto err_unreg;
1407 init_waitqueue_head(&usbvision->ctrl_urb_wq);
1408
1409 usbvision_init_power_off_timer(usbvision);
1410
1411 return usbvision;
1412
1413 err_unreg:
1414 v4l2_device_unregister(&usbvision->v4l2_dev);
1415 err_free:
1416 kfree(usbvision);
1417 return NULL;
1418 }
1419
1420 /*
1421 * usbvision_release()
1422 *
1423 * This code does final release of struct usb_usbvision. This happens
1424 * after the device is disconnected -and- all clients closed their files.
1425 *
1426 */
1427 static void usbvision_release(struct usb_usbvision *usbvision)
1428 {
1429 PDEBUG(DBG_PROBE, "");
1430
1431 usbvision_reset_power_off_timer(usbvision);
1432
1433 usbvision->initialized = 0;
1434
1435 usbvision_remove_sysfs(usbvision->vdev);
1436 usbvision_unregister_video(usbvision);
1437
1438 usb_free_urb(usbvision->ctrl_urb);
1439
1440 v4l2_device_unregister(&usbvision->v4l2_dev);
1441 kfree(usbvision);
1442
1443 PDEBUG(DBG_PROBE, "success");
1444 }
1445
1446
1447 /*********************** usb interface **********************************/
1448
1449 static void usbvision_configure_video(struct usb_usbvision *usbvision)
1450 {
1451 int model;
1452
1453 if (usbvision == NULL)
1454 return;
1455
1456 model = usbvision->dev_model;
1457 usbvision->palette = usbvision_v4l2_format[2]; /* V4L2_PIX_FMT_RGB24; */
1458
1459 if (usbvision_device_data[usbvision->dev_model].vin_reg2_override) {
1460 usbvision->vin_reg2_preset =
1461 usbvision_device_data[usbvision->dev_model].vin_reg2;
1462 } else {
1463 usbvision->vin_reg2_preset = 0;
1464 }
1465
1466 usbvision->tvnorm_id = usbvision_device_data[model].video_norm;
1467
1468 usbvision->video_inputs = usbvision_device_data[model].video_channels;
1469 usbvision->ctl_input = 0;
1470
1471 /* This should be here to make i2c clients to be able to register */
1472 /* first switch off audio */
1473 usbvision_audio_off(usbvision);
1474 if (!power_on_at_open) {
1475 /* and then power up the noisy tuner */
1476 usbvision_power_on(usbvision);
1477 usbvision_i2c_register(usbvision);
1478 }
1479 }
1480
1481 /*
1482 * usbvision_probe()
1483 *
1484 * This procedure queries device descriptor and accepts the interface
1485 * if it looks like USBVISION video device
1486 *
1487 */
1488 static int __devinit usbvision_probe(struct usb_interface *intf,
1489 const struct usb_device_id *devid)
1490 {
1491 struct usb_device *dev = usb_get_dev(interface_to_usbdev(intf));
1492 struct usb_interface *uif;
1493 __u8 ifnum = intf->altsetting->desc.bInterfaceNumber;
1494 const struct usb_host_interface *interface;
1495 struct usb_usbvision *usbvision = NULL;
1496 const struct usb_endpoint_descriptor *endpoint;
1497 int model, i;
1498
1499 PDEBUG(DBG_PROBE, "VID=%#04x, PID=%#04x, ifnum=%u",
1500 dev->descriptor.idVendor,
1501 dev->descriptor.idProduct, ifnum);
1502
1503 model = devid->driver_info;
1504 if (model < 0 || model >= usbvision_device_data_size) {
1505 PDEBUG(DBG_PROBE, "model out of bounds %d", model);
1506 return -ENODEV;
1507 }
1508 printk(KERN_INFO "%s: %s found\n", __func__,
1509 usbvision_device_data[model].model_string);
1510
1511 if (usbvision_device_data[model].interface >= 0)
1512 interface = &dev->actconfig->interface[usbvision_device_data[model].interface]->altsetting[0];
1513 else
1514 interface = &dev->actconfig->interface[ifnum]->altsetting[0];
1515 endpoint = &interface->endpoint[1].desc;
1516 if (!usb_endpoint_xfer_isoc(endpoint)) {
1517 dev_err(&intf->dev, "%s: interface %d. has non-ISO endpoint!\n",
1518 __func__, ifnum);
1519 dev_err(&intf->dev, "%s: Endpoint attributes %d",
1520 __func__, endpoint->bmAttributes);
1521 return -ENODEV;
1522 }
1523 if (usb_endpoint_dir_out(endpoint)) {
1524 dev_err(&intf->dev, "%s: interface %d. has ISO OUT endpoint!\n",
1525 __func__, ifnum);
1526 return -ENODEV;
1527 }
1528
1529 usbvision = usbvision_alloc(dev, intf);
1530 if (usbvision == NULL) {
1531 dev_err(&intf->dev, "%s: couldn't allocate USBVision struct\n", __func__);
1532 return -ENOMEM;
1533 }
1534
1535 if (dev->descriptor.bNumConfigurations > 1)
1536 usbvision->bridge_type = BRIDGE_NT1004;
1537 else if (model == DAZZLE_DVC_90_REV_1_SECAM)
1538 usbvision->bridge_type = BRIDGE_NT1005;
1539 else
1540 usbvision->bridge_type = BRIDGE_NT1003;
1541 PDEBUG(DBG_PROBE, "bridge_type %d", usbvision->bridge_type);
1542
1543 /* compute alternate max packet sizes */
1544 uif = dev->actconfig->interface[0];
1545
1546 usbvision->num_alt = uif->num_altsetting;
1547 PDEBUG(DBG_PROBE, "Alternate settings: %i", usbvision->num_alt);
1548 usbvision->alt_max_pkt_size = kmalloc(32 * usbvision->num_alt, GFP_KERNEL);
1549 if (usbvision->alt_max_pkt_size == NULL) {
1550 dev_err(&intf->dev, "usbvision: out of memory!\n");
1551 return -ENOMEM;
1552 }
1553
1554 for (i = 0; i < usbvision->num_alt; i++) {
1555 u16 tmp = le16_to_cpu(uif->altsetting[i].endpoint[1].desc.
1556 wMaxPacketSize);
1557 usbvision->alt_max_pkt_size[i] =
1558 (tmp & 0x07ff) * (((tmp & 0x1800) >> 11) + 1);
1559 PDEBUG(DBG_PROBE, "Alternate setting %i, max size= %i", i,
1560 usbvision->alt_max_pkt_size[i]);
1561 }
1562
1563
1564 usbvision->nr = usbvision_nr++;
1565
1566 usbvision->have_tuner = usbvision_device_data[model].tuner;
1567 if (usbvision->have_tuner)
1568 usbvision->tuner_type = usbvision_device_data[model].tuner_type;
1569
1570 usbvision->dev_model = model;
1571 usbvision->remove_pending = 0;
1572 usbvision->iface = ifnum;
1573 usbvision->iface_alt = 0;
1574 usbvision->video_endp = endpoint->bEndpointAddress;
1575 usbvision->isoc_packet_size = 0;
1576 usbvision->usb_bandwidth = 0;
1577 usbvision->user = 0;
1578 usbvision->streaming = stream_off;
1579 usbvision_configure_video(usbvision);
1580 usbvision_register_video(usbvision);
1581
1582 usbvision_create_sysfs(usbvision->vdev);
1583
1584 PDEBUG(DBG_PROBE, "success");
1585 return 0;
1586 }
1587
1588
1589 /*
1590 * usbvision_disconnect()
1591 *
1592 * This procedure stops all driver activity, deallocates interface-private
1593 * structure (pointed by 'ptr') and after that driver should be removable
1594 * with no ill consequences.
1595 *
1596 */
1597 static void __devexit usbvision_disconnect(struct usb_interface *intf)
1598 {
1599 struct usb_usbvision *usbvision = to_usbvision(usb_get_intfdata(intf));
1600
1601 PDEBUG(DBG_PROBE, "");
1602
1603 if (usbvision == NULL) {
1604 pr_err("%s: usb_get_intfdata() failed\n", __func__);
1605 return;
1606 }
1607
1608 mutex_lock(&usbvision->v4l2_lock);
1609
1610 /* At this time we ask to cancel outstanding URBs */
1611 usbvision_stop_isoc(usbvision);
1612
1613 v4l2_device_disconnect(&usbvision->v4l2_dev);
1614
1615 if (usbvision->power) {
1616 usbvision_i2c_unregister(usbvision);
1617 usbvision_power_off(usbvision);
1618 }
1619 usbvision->remove_pending = 1; /* Now all ISO data will be ignored */
1620
1621 usb_put_dev(usbvision->dev);
1622 usbvision->dev = NULL; /* USB device is no more */
1623
1624 mutex_unlock(&usbvision->v4l2_lock);
1625
1626 if (usbvision->user) {
1627 printk(KERN_INFO "%s: In use, disconnect pending\n",
1628 __func__);
1629 wake_up_interruptible(&usbvision->wait_frame);
1630 wake_up_interruptible(&usbvision->wait_stream);
1631 } else {
1632 usbvision_release(usbvision);
1633 }
1634
1635 PDEBUG(DBG_PROBE, "success");
1636 }
1637
1638 static struct usb_driver usbvision_driver = {
1639 .name = "usbvision",
1640 .id_table = usbvision_table,
1641 .probe = usbvision_probe,
1642 .disconnect = __devexit_p(usbvision_disconnect),
1643 };
1644
1645 /*
1646 * usbvision_init()
1647 *
1648 * This code is run to initialize the driver.
1649 *
1650 */
1651 static int __init usbvision_init(void)
1652 {
1653 int err_code;
1654
1655 PDEBUG(DBG_PROBE, "");
1656
1657 PDEBUG(DBG_IO, "IO debugging is enabled [video]");
1658 PDEBUG(DBG_PROBE, "PROBE debugging is enabled [video]");
1659 PDEBUG(DBG_MMAP, "MMAP debugging is enabled [video]");
1660
1661 /* disable planar mode support unless compression enabled */
1662 if (isoc_mode != ISOC_MODE_COMPRESS) {
1663 /* FIXME : not the right way to set supported flag */
1664 usbvision_v4l2_format[6].supported = 0; /* V4L2_PIX_FMT_YVU420 */
1665 usbvision_v4l2_format[7].supported = 0; /* V4L2_PIX_FMT_YUV422P */
1666 }
1667
1668 err_code = usb_register(&usbvision_driver);
1669
1670 if (err_code == 0) {
1671 printk(KERN_INFO DRIVER_DESC " : " USBVISION_VERSION_STRING "\n");
1672 PDEBUG(DBG_PROBE, "success");
1673 }
1674 return err_code;
1675 }
1676
1677 static void __exit usbvision_exit(void)
1678 {
1679 PDEBUG(DBG_PROBE, "");
1680
1681 usb_deregister(&usbvision_driver);
1682 PDEBUG(DBG_PROBE, "success");
1683 }
1684
1685 module_init(usbvision_init);
1686 module_exit(usbvision_exit);
1687
1688 /*
1689 * Overrides for Emacs so that we follow Linus's tabbing style.
1690 * ---------------------------------------------------------------------------
1691 * Local variables:
1692 * c-basic-offset: 8
1693 * End:
1694 */
CRIS linux kernel tree