2 * USB USBVISION Video device driver 0.9.10
6 * Copyright (c) 1999-2005 Joerg Heckenbach <joerg@heckenbach-aw.de>
8 * This module is part of usbvision driver project.
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.
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.
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.
24 * Let's call the version 0.... until compression decoding is completely
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
36 * - use submit_urb for all setup packets
37 * - Fix memory settings for nt1004. It is 4 times as big as the
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
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>
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>
60 #include <linux/videodev2.h>
61 #include <linux/i2c.h>
63 #include <media/saa7115.h>
64 #include <media/v4l2-common.h>
65 #include <media/v4l2-ioctl.h>
66 #include <media/tuner.h>
68 #include <linux/workqueue.h>
70 #include "usbvision.h"
71 #include "usbvision-cards.h"
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)
89 #define ENABLE_HEXDUMP 0 /* Enable if you need it */
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); \
99 #define PDEBUG(level, fmt, args...) do {} while(0)
103 #define DBG_PROBE 1<<2
104 #define DBG_MMAP 1<<3
107 #define rmspace(str) while(*str==' ') str++;
108 #define goto2next(str) while(*str!=' ') str++; while(*str==' ') str++;
111 /* sequential number of usbvision device */
112 static int usbvision_nr;
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" }
125 /* Function prototypes */
126 static void usbvision_release(struct usb_usbvision *usbvision);
128 /* Default initialization of device driver parameters */
129 /* Set the default format for ISOC endpoint */
130 static int isocMode = 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 PowerOnAtOpen = 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;
140 /* Grab parameters for the device driver */
142 /* Showing parameters under SYSFS */
143 module_param(isocMode, int, 0444);
144 module_param(video_debug, int, 0444);
145 module_param(PowerOnAtOpen, int, 0444);
146 module_param(video_nr, int, 0444);
147 module_param(radio_nr, int, 0444);
149 MODULE_PARM_DESC(isocMode, " 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(PowerOnAtOpen, " 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)");
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);
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 /*****************************************************************************/
172 #define YES_NO(x) ((x) ? "Yes" : "No")
174 static inline struct usb_usbvision *cd_to_usbvision(struct device *cd)
176 struct video_device *vdev =
177 container_of(cd, struct video_device, dev);
178 return video_get_drvdata(vdev);
181 static ssize_t show_version(struct device *cd,
182 struct device_attribute *attr, char *buf)
184 return sprintf(buf, "%s\n", USBVISION_VERSION_STRING);
186 static DEVICE_ATTR(version, S_IRUGO, show_version, NULL);
188 static ssize_t show_model(struct device *cd,
189 struct device_attribute *attr, char *buf)
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->DevModel].ModelString);
197 static DEVICE_ATTR(model, S_IRUGO, show_model, NULL);
199 static ssize_t show_hue(struct device *cd,
200 struct device_attribute *attr, char *buf)
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;
209 call_all(usbvision, core, g_ctrl, &ctrl);
210 return sprintf(buf, "%d\n", ctrl.value);
212 static DEVICE_ATTR(hue, S_IRUGO, show_hue, NULL);
214 static ssize_t show_contrast(struct device *cd,
215 struct device_attribute *attr, char *buf)
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;
224 call_all(usbvision, core, g_ctrl, &ctrl);
225 return sprintf(buf, "%d\n", ctrl.value);
227 static DEVICE_ATTR(contrast, S_IRUGO, show_contrast, NULL);
229 static ssize_t show_brightness(struct device *cd,
230 struct device_attribute *attr, char *buf)
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;
239 call_all(usbvision, core, g_ctrl, &ctrl);
240 return sprintf(buf, "%d\n", ctrl.value);
242 static DEVICE_ATTR(brightness, S_IRUGO, show_brightness, NULL);
244 static ssize_t show_saturation(struct device *cd,
245 struct device_attribute *attr, char *buf)
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;
254 call_all(usbvision, core, g_ctrl, &ctrl);
255 return sprintf(buf, "%d\n", ctrl.value);
257 static DEVICE_ATTR(saturation, S_IRUGO, show_saturation, NULL);
259 static ssize_t show_streaming(struct device *cd,
260 struct device_attribute *attr, char *buf)
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));
268 static DEVICE_ATTR(streaming, S_IRUGO, show_streaming, NULL);
270 static ssize_t show_compression(struct device *cd,
271 struct device_attribute *attr, char *buf)
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->isocMode==ISOC_MODE_COMPRESS));
279 static DEVICE_ATTR(compression, S_IRUGO, show_compression, NULL);
281 static ssize_t show_device_bridge(struct device *cd,
282 struct device_attribute *attr, char *buf)
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->bridgeType);
289 static DEVICE_ATTR(bridge, S_IRUGO, show_device_bridge, NULL);
291 static void usbvision_create_sysfs(struct video_device *vdev)
297 res = device_create_file(&vdev->dev, &dev_attr_version);
300 res = device_create_file(&vdev->dev, &dev_attr_model);
303 res = device_create_file(&vdev->dev, &dev_attr_hue);
306 res = device_create_file(&vdev->dev, &dev_attr_contrast);
309 res = device_create_file(&vdev->dev, &dev_attr_brightness);
312 res = device_create_file(&vdev->dev, &dev_attr_saturation);
315 res = device_create_file(&vdev->dev, &dev_attr_streaming);
318 res = device_create_file(&vdev->dev, &dev_attr_compression);
321 res = device_create_file(&vdev->dev, &dev_attr_bridge);
326 dev_err(&vdev->dev, "%s error: %d\n", __func__, res);
329 static void usbvision_remove_sysfs(struct video_device *vdev)
332 device_remove_file(&vdev->dev, &dev_attr_version);
333 device_remove_file(&vdev->dev, &dev_attr_model);
334 device_remove_file(&vdev->dev, &dev_attr_hue);
335 device_remove_file(&vdev->dev, &dev_attr_contrast);
336 device_remove_file(&vdev->dev, &dev_attr_brightness);
337 device_remove_file(&vdev->dev, &dev_attr_saturation);
338 device_remove_file(&vdev->dev, &dev_attr_streaming);
339 device_remove_file(&vdev->dev, &dev_attr_compression);
340 device_remove_file(&vdev->dev, &dev_attr_bridge);
347 * This is part of Video 4 Linux API. The driver can be opened by one
348 * client only (checks internal counter 'usbvision->user'). The procedure
349 * then allocates buffers needed for video processing.
352 static int usbvision_v4l2_open(struct file *file)
354 struct usb_usbvision *usbvision = video_drvdata(file);
357 PDEBUG(DBG_IO, "open");
359 mutex_lock(&usbvision->lock);
360 usbvision_reset_powerOffTimer(usbvision);
365 /* Allocate memory for the scratch ring buffer */
366 errCode = usbvision_scratch_alloc(usbvision);
367 if (isocMode==ISOC_MODE_COMPRESS) {
368 /* Allocate intermediate decompression buffers
370 errCode = usbvision_decompress_alloc(usbvision);
373 /* Deallocate all buffers if trouble */
374 usbvision_scratch_free(usbvision);
375 usbvision_decompress_free(usbvision);
379 /* If so far no errors then we shall start the camera */
381 if (usbvision->power == 0) {
382 usbvision_power_on(usbvision);
383 usbvision_i2c_register(usbvision);
386 /* Send init sequence only once, it's large! */
387 if (!usbvision->initialized) {
389 setup_ok = usbvision_setup(usbvision,isocMode);
391 usbvision->initialized = 1;
397 usbvision_begin_streaming(usbvision);
398 errCode = usbvision_init_isoc(usbvision);
399 /* device must be initialized before isoc transfer */
400 usbvision_muxsel(usbvision,0);
404 usbvision_i2c_unregister(usbvision);
405 usbvision_power_off(usbvision);
406 usbvision->initialized = 0;
412 usbvision_empty_framequeues(usbvision);
414 PDEBUG(DBG_IO, "success");
415 mutex_unlock(&usbvision->lock);
420 * usbvision_v4l2_close()
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().
427 static int usbvision_v4l2_close(struct file *file)
429 struct usb_usbvision *usbvision = video_drvdata(file);
431 PDEBUG(DBG_IO, "close");
432 mutex_lock(&usbvision->lock);
434 usbvision_audio_off(usbvision);
435 usbvision_restart_isoc(usbvision);
436 usbvision_stop_isoc(usbvision);
438 usbvision_decompress_free(usbvision);
439 usbvision_frames_free(usbvision);
440 usbvision_empty_framequeues(usbvision);
441 usbvision_scratch_free(usbvision);
446 /* power off in a little while
447 to avoid off/on every close/open short sequences */
448 usbvision_set_powerOffTimer(usbvision);
449 usbvision->initialized = 0;
452 mutex_unlock(&usbvision->lock);
454 if (usbvision->remove_pending) {
455 printk(KERN_INFO "%s: Final disconnect\n", __func__);
456 usbvision_release(usbvision);
459 PDEBUG(DBG_IO, "success");
467 * This is part of Video 4 Linux API. The procedure handles ioctl() calls.
470 #ifdef CONFIG_VIDEO_ADV_DEBUG
471 static int vidioc_g_register (struct file *file, void *priv,
472 struct v4l2_dbg_register *reg)
474 struct usb_usbvision *usbvision = video_drvdata(file);
477 if (!v4l2_chip_match_host(®->match))
479 /* NT100x has a 8-bit register space */
480 errCode = usbvision_read_reg(usbvision, reg->reg&0xff);
482 dev_err(&usbvision->vdev->dev,
483 "%s: VIDIOC_DBG_G_REGISTER failed: error %d\n",
492 static int vidioc_s_register (struct file *file, void *priv,
493 struct v4l2_dbg_register *reg)
495 struct usb_usbvision *usbvision = video_drvdata(file);
498 if (!v4l2_chip_match_host(®->match))
500 /* NT100x has a 8-bit register space */
501 errCode = usbvision_write_reg(usbvision, reg->reg&0xff, reg->val);
503 dev_err(&usbvision->vdev->dev,
504 "%s: VIDIOC_DBG_S_REGISTER failed: error %d\n",
512 static int vidioc_querycap (struct file *file, void *priv,
513 struct v4l2_capability *vc)
515 struct usb_usbvision *usbvision = video_drvdata(file);
517 strlcpy(vc->driver, "USBVision", sizeof(vc->driver));
519 usbvision_device_data[usbvision->DevModel].ModelString,
521 usb_make_path(usbvision->dev, vc->bus_info, sizeof(vc->bus_info));
522 vc->version = USBVISION_DRIVER_VERSION;
523 vc->capabilities = V4L2_CAP_VIDEO_CAPTURE |
527 (usbvision->have_tuner ? V4L2_CAP_TUNER : 0);
531 static int vidioc_enum_input (struct file *file, void *priv,
532 struct v4l2_input *vi)
534 struct usb_usbvision *usbvision = video_drvdata(file);
537 if (vi->index >= usbvision->video_inputs)
539 if (usbvision->have_tuner) {
542 chan = vi->index + 1; /*skip Television string*/
544 /* Determine the requested input characteristics
545 specific for each usbvision card model */
548 if (usbvision_device_data[usbvision->DevModel].VideoChannels == 4) {
549 strcpy(vi->name, "White Video Input");
551 strcpy(vi->name, "Television");
552 vi->type = V4L2_INPUT_TYPE_TUNER;
555 vi->std = USBVISION_NORMS;
559 vi->type = V4L2_INPUT_TYPE_CAMERA;
560 if (usbvision_device_data[usbvision->DevModel].VideoChannels == 4) {
561 strcpy(vi->name, "Green Video Input");
563 strcpy(vi->name, "Composite Video Input");
565 vi->std = V4L2_STD_PAL;
568 vi->type = V4L2_INPUT_TYPE_CAMERA;
569 if (usbvision_device_data[usbvision->DevModel].VideoChannels == 4) {
570 strcpy(vi->name, "Yellow Video Input");
572 strcpy(vi->name, "S-Video Input");
574 vi->std = V4L2_STD_PAL;
577 vi->type = V4L2_INPUT_TYPE_CAMERA;
578 strcpy(vi->name, "Red Video Input");
579 vi->std = V4L2_STD_PAL;
585 static int vidioc_g_input (struct file *file, void *priv, unsigned int *input)
587 struct usb_usbvision *usbvision = video_drvdata(file);
589 *input = usbvision->ctl_input;
593 static int vidioc_s_input (struct file *file, void *priv, unsigned int input)
595 struct usb_usbvision *usbvision = video_drvdata(file);
597 if (input >= usbvision->video_inputs)
600 mutex_lock(&usbvision->lock);
601 usbvision_muxsel(usbvision, input);
602 usbvision_set_input(usbvision);
603 usbvision_set_output(usbvision,
605 usbvision->curheight);
606 mutex_unlock(&usbvision->lock);
610 static int vidioc_s_std (struct file *file, void *priv, v4l2_std_id *id)
612 struct usb_usbvision *usbvision = video_drvdata(file);
614 usbvision->tvnormId=*id;
616 mutex_lock(&usbvision->lock);
617 call_all(usbvision, core, s_std, usbvision->tvnormId);
618 mutex_unlock(&usbvision->lock);
619 /* propagate the change to the decoder */
620 usbvision_muxsel(usbvision, usbvision->ctl_input);
625 static int vidioc_g_tuner (struct file *file, void *priv,
626 struct v4l2_tuner *vt)
628 struct usb_usbvision *usbvision = video_drvdata(file);
630 if (!usbvision->have_tuner || vt->index) // Only tuner 0
632 if(usbvision->radio) {
633 strcpy(vt->name, "Radio");
634 vt->type = V4L2_TUNER_RADIO;
636 strcpy(vt->name, "Television");
638 /* Let clients fill in the remainder of this struct */
639 call_all(usbvision, tuner, g_tuner, vt);
644 static int vidioc_s_tuner (struct file *file, void *priv,
645 struct v4l2_tuner *vt)
647 struct usb_usbvision *usbvision = video_drvdata(file);
649 // Only no or one tuner for now
650 if (!usbvision->have_tuner || vt->index)
652 /* let clients handle this */
653 call_all(usbvision, tuner, s_tuner, vt);
658 static int vidioc_g_frequency (struct file *file, void *priv,
659 struct v4l2_frequency *freq)
661 struct usb_usbvision *usbvision = video_drvdata(file);
663 freq->tuner = 0; // Only one tuner
664 if(usbvision->radio) {
665 freq->type = V4L2_TUNER_RADIO;
667 freq->type = V4L2_TUNER_ANALOG_TV;
669 freq->frequency = usbvision->freq;
674 static int vidioc_s_frequency (struct file *file, void *priv,
675 struct v4l2_frequency *freq)
677 struct usb_usbvision *usbvision = video_drvdata(file);
679 // Only no or one tuner for now
680 if (!usbvision->have_tuner || freq->tuner)
683 usbvision->freq = freq->frequency;
684 call_all(usbvision, tuner, s_frequency, freq);
689 static int vidioc_g_audio (struct file *file, void *priv, struct v4l2_audio *a)
691 struct usb_usbvision *usbvision = video_drvdata(file);
693 if(usbvision->radio) {
694 strcpy(a->name,"Radio");
696 strcpy(a->name, "TV");
702 static int vidioc_s_audio (struct file *file, void *fh,
703 struct v4l2_audio *a)
712 static int vidioc_queryctrl (struct file *file, void *priv,
713 struct v4l2_queryctrl *ctrl)
715 struct usb_usbvision *usbvision = video_drvdata(file);
717 call_all(usbvision, core, queryctrl, ctrl);
725 static int vidioc_g_ctrl (struct file *file, void *priv,
726 struct v4l2_control *ctrl)
728 struct usb_usbvision *usbvision = video_drvdata(file);
729 call_all(usbvision, core, g_ctrl, ctrl);
734 static int vidioc_s_ctrl (struct file *file, void *priv,
735 struct v4l2_control *ctrl)
737 struct usb_usbvision *usbvision = video_drvdata(file);
738 call_all(usbvision, core, s_ctrl, ctrl);
743 static int vidioc_reqbufs (struct file *file,
744 void *priv, struct v4l2_requestbuffers *vr)
746 struct usb_usbvision *usbvision = video_drvdata(file);
749 RESTRICT_TO_RANGE(vr->count,1,USBVISION_NUMFRAMES);
751 /* Check input validity:
752 the user must do a VIDEO CAPTURE and MMAP method. */
753 if (vr->memory != V4L2_MEMORY_MMAP)
756 if(usbvision->streaming == Stream_On) {
757 if ((ret = usbvision_stream_interrupt(usbvision)))
761 usbvision_frames_free(usbvision);
762 usbvision_empty_framequeues(usbvision);
763 vr->count = usbvision_frames_alloc(usbvision,vr->count);
765 usbvision->curFrame = NULL;
770 static int vidioc_querybuf (struct file *file,
771 void *priv, struct v4l2_buffer *vb)
773 struct usb_usbvision *usbvision = video_drvdata(file);
774 struct usbvision_frame *frame;
776 /* FIXME : must control
777 that buffers are mapped (VIDIOC_REQBUFS has been called) */
778 if(vb->index>=usbvision->num_frames) {
781 /* Updating the corresponding frame state */
783 frame = &usbvision->frame[vb->index];
784 if(frame->grabstate >= FrameState_Ready)
785 vb->flags |= V4L2_BUF_FLAG_QUEUED;
786 if(frame->grabstate >= FrameState_Done)
787 vb->flags |= V4L2_BUF_FLAG_DONE;
788 if(frame->grabstate == FrameState_Unused)
789 vb->flags |= V4L2_BUF_FLAG_MAPPED;
790 vb->memory = V4L2_MEMORY_MMAP;
792 vb->m.offset = vb->index*PAGE_ALIGN(usbvision->max_frame_size);
794 vb->memory = V4L2_MEMORY_MMAP;
795 vb->field = V4L2_FIELD_NONE;
796 vb->length = usbvision->curwidth*
797 usbvision->curheight*
798 usbvision->palette.bytes_per_pixel;
799 vb->timestamp = usbvision->frame[vb->index].timestamp;
800 vb->sequence = usbvision->frame[vb->index].sequence;
804 static int vidioc_qbuf (struct file *file, void *priv, struct v4l2_buffer *vb)
806 struct usb_usbvision *usbvision = video_drvdata(file);
807 struct usbvision_frame *frame;
808 unsigned long lock_flags;
810 /* FIXME : works only on VIDEO_CAPTURE MODE, MMAP. */
811 if(vb->index>=usbvision->num_frames) {
815 frame = &usbvision->frame[vb->index];
817 if (frame->grabstate != FrameState_Unused) {
821 /* Mark it as ready and enqueue frame */
822 frame->grabstate = FrameState_Ready;
823 frame->scanstate = ScanState_Scanning;
824 frame->scanlength = 0; /* Accumulated in usbvision_parse_data() */
826 vb->flags &= ~V4L2_BUF_FLAG_DONE;
828 /* set v4l2_format index */
829 frame->v4l2_format = usbvision->palette;
831 spin_lock_irqsave(&usbvision->queue_lock, lock_flags);
832 list_add_tail(&usbvision->frame[vb->index].frame, &usbvision->inqueue);
833 spin_unlock_irqrestore(&usbvision->queue_lock, lock_flags);
838 static int vidioc_dqbuf (struct file *file, void *priv, struct v4l2_buffer *vb)
840 struct usb_usbvision *usbvision = video_drvdata(file);
842 struct usbvision_frame *f;
843 unsigned long lock_flags;
845 if (list_empty(&(usbvision->outqueue))) {
846 if (usbvision->streaming == Stream_Idle)
848 ret = wait_event_interruptible
849 (usbvision->wait_frame,
850 !list_empty(&(usbvision->outqueue)));
855 spin_lock_irqsave(&usbvision->queue_lock, lock_flags);
856 f = list_entry(usbvision->outqueue.next,
857 struct usbvision_frame, frame);
858 list_del(usbvision->outqueue.next);
859 spin_unlock_irqrestore(&usbvision->queue_lock, lock_flags);
861 f->grabstate = FrameState_Unused;
863 vb->memory = V4L2_MEMORY_MMAP;
864 vb->flags = V4L2_BUF_FLAG_MAPPED |
865 V4L2_BUF_FLAG_QUEUED |
867 vb->index = f->index;
868 vb->sequence = f->sequence;
869 vb->timestamp = f->timestamp;
870 vb->field = V4L2_FIELD_NONE;
871 vb->bytesused = f->scanlength;
876 static int vidioc_streamon(struct file *file, void *priv, enum v4l2_buf_type i)
878 struct usb_usbvision *usbvision = video_drvdata(file);
880 usbvision->streaming = Stream_On;
881 call_all(usbvision, video, s_stream, 1);
886 static int vidioc_streamoff(struct file *file,
887 void *priv, enum v4l2_buf_type type)
889 struct usb_usbvision *usbvision = video_drvdata(file);
891 if (type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
894 if(usbvision->streaming == Stream_On) {
895 usbvision_stream_interrupt(usbvision);
896 /* Stop all video streamings */
897 call_all(usbvision, video, s_stream, 0);
899 usbvision_empty_framequeues(usbvision);
904 static int vidioc_enum_fmt_vid_cap (struct file *file, void *priv,
905 struct v4l2_fmtdesc *vfd)
907 if(vfd->index>=USBVISION_SUPPORTED_PALETTES-1) {
910 strcpy(vfd->description,usbvision_v4l2_format[vfd->index].desc);
911 vfd->pixelformat = usbvision_v4l2_format[vfd->index].format;
915 static int vidioc_g_fmt_vid_cap (struct file *file, void *priv,
916 struct v4l2_format *vf)
918 struct usb_usbvision *usbvision = video_drvdata(file);
919 vf->fmt.pix.width = usbvision->curwidth;
920 vf->fmt.pix.height = usbvision->curheight;
921 vf->fmt.pix.pixelformat = usbvision->palette.format;
922 vf->fmt.pix.bytesperline =
923 usbvision->curwidth*usbvision->palette.bytes_per_pixel;
924 vf->fmt.pix.sizeimage = vf->fmt.pix.bytesperline*usbvision->curheight;
925 vf->fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M;
926 vf->fmt.pix.field = V4L2_FIELD_NONE; /* Always progressive image */
931 static int vidioc_try_fmt_vid_cap (struct file *file, void *priv,
932 struct v4l2_format *vf)
934 struct usb_usbvision *usbvision = video_drvdata(file);
937 /* Find requested format in available ones */
938 for(formatIdx=0;formatIdx<USBVISION_SUPPORTED_PALETTES;formatIdx++) {
939 if(vf->fmt.pix.pixelformat ==
940 usbvision_v4l2_format[formatIdx].format) {
941 usbvision->palette = usbvision_v4l2_format[formatIdx];
946 if(formatIdx == USBVISION_SUPPORTED_PALETTES) {
949 RESTRICT_TO_RANGE(vf->fmt.pix.width, MIN_FRAME_WIDTH, MAX_FRAME_WIDTH);
950 RESTRICT_TO_RANGE(vf->fmt.pix.height, MIN_FRAME_HEIGHT, MAX_FRAME_HEIGHT);
952 vf->fmt.pix.bytesperline = vf->fmt.pix.width*
953 usbvision->palette.bytes_per_pixel;
954 vf->fmt.pix.sizeimage = vf->fmt.pix.bytesperline*vf->fmt.pix.height;
959 static int vidioc_s_fmt_vid_cap(struct file *file, void *priv,
960 struct v4l2_format *vf)
962 struct usb_usbvision *usbvision = video_drvdata(file);
965 if( 0 != (ret=vidioc_try_fmt_vid_cap (file, priv, vf)) ) {
969 /* stop io in case it is already in progress */
970 if(usbvision->streaming == Stream_On) {
971 if ((ret = usbvision_stream_interrupt(usbvision)))
974 usbvision_frames_free(usbvision);
975 usbvision_empty_framequeues(usbvision);
977 usbvision->curFrame = NULL;
979 /* by now we are committed to the new data... */
980 mutex_lock(&usbvision->lock);
981 usbvision_set_output(usbvision, vf->fmt.pix.width, vf->fmt.pix.height);
982 mutex_unlock(&usbvision->lock);
987 static ssize_t usbvision_v4l2_read(struct file *file, char __user *buf,
988 size_t count, loff_t *ppos)
990 struct usb_usbvision *usbvision = video_drvdata(file);
991 int noblock = file->f_flags & O_NONBLOCK;
992 unsigned long lock_flags;
995 struct usbvision_frame *frame;
997 PDEBUG(DBG_IO, "%s: %ld bytes, noblock=%d", __func__,
998 (unsigned long)count, noblock);
1000 if (!USBVISION_IS_OPERATIONAL(usbvision) || (buf == NULL))
1003 /* This entry point is compatible with the mmap routines
1004 so that a user can do either VIDIOC_QBUF/VIDIOC_DQBUF
1005 to get frames or call read on the device. */
1006 if(!usbvision->num_frames) {
1007 /* First, allocate some frames to work with
1008 if this has not been done with VIDIOC_REQBUF */
1009 usbvision_frames_free(usbvision);
1010 usbvision_empty_framequeues(usbvision);
1011 usbvision_frames_alloc(usbvision,USBVISION_NUMFRAMES);
1014 if(usbvision->streaming != Stream_On) {
1015 /* no stream is running, make it running ! */
1016 usbvision->streaming = Stream_On;
1017 call_all(usbvision, video, s_stream, 1);
1020 /* Then, enqueue as many frames as possible
1021 (like a user of VIDIOC_QBUF would do) */
1022 for(i=0;i<usbvision->num_frames;i++) {
1023 frame = &usbvision->frame[i];
1024 if(frame->grabstate == FrameState_Unused) {
1025 /* Mark it as ready and enqueue frame */
1026 frame->grabstate = FrameState_Ready;
1027 frame->scanstate = ScanState_Scanning;
1028 /* Accumulated in usbvision_parse_data() */
1029 frame->scanlength = 0;
1031 /* set v4l2_format index */
1032 frame->v4l2_format = usbvision->palette;
1034 spin_lock_irqsave(&usbvision->queue_lock, lock_flags);
1035 list_add_tail(&frame->frame, &usbvision->inqueue);
1036 spin_unlock_irqrestore(&usbvision->queue_lock,
1041 /* Then try to steal a frame (like a VIDIOC_DQBUF would do) */
1042 if (list_empty(&(usbvision->outqueue))) {
1046 ret = wait_event_interruptible
1047 (usbvision->wait_frame,
1048 !list_empty(&(usbvision->outqueue)));
1053 spin_lock_irqsave(&usbvision->queue_lock, lock_flags);
1054 frame = list_entry(usbvision->outqueue.next,
1055 struct usbvision_frame, frame);
1056 list_del(usbvision->outqueue.next);
1057 spin_unlock_irqrestore(&usbvision->queue_lock, lock_flags);
1059 /* An error returns an empty frame */
1060 if (frame->grabstate == FrameState_Error) {
1061 frame->bytes_read = 0;
1065 PDEBUG(DBG_IO, "%s: frmx=%d, bytes_read=%ld, scanlength=%ld",
1067 frame->index, frame->bytes_read, frame->scanlength);
1069 /* copy bytes to user space; we allow for partials reads */
1070 if ((count + frame->bytes_read) > (unsigned long)frame->scanlength)
1071 count = frame->scanlength - frame->bytes_read;
1073 if (copy_to_user(buf, frame->data + frame->bytes_read, count)) {
1077 frame->bytes_read += count;
1078 PDEBUG(DBG_IO, "%s: {copy} count used=%ld, new bytes_read=%ld",
1080 (unsigned long)count, frame->bytes_read);
1082 /* For now, forget the frame if it has not been read in one shot. */
1083 /* if (frame->bytes_read >= frame->scanlength) {// All data has been read */
1084 frame->bytes_read = 0;
1086 /* Mark it as available to be used again. */
1087 frame->grabstate = FrameState_Unused;
1093 static int usbvision_v4l2_mmap(struct file *file, struct vm_area_struct *vma)
1095 unsigned long size = vma->vm_end - vma->vm_start,
1096 start = vma->vm_start;
1099 struct usb_usbvision *usbvision = video_drvdata(file);
1101 PDEBUG(DBG_MMAP, "mmap");
1103 mutex_lock(&usbvision->lock);
1105 if (!USBVISION_IS_OPERATIONAL(usbvision)) {
1106 mutex_unlock(&usbvision->lock);
1110 if (!(vma->vm_flags & VM_WRITE) ||
1111 size != PAGE_ALIGN(usbvision->max_frame_size)) {
1112 mutex_unlock(&usbvision->lock);
1116 for (i = 0; i < usbvision->num_frames; i++) {
1117 if (((PAGE_ALIGN(usbvision->max_frame_size)*i) >> PAGE_SHIFT) ==
1121 if (i == usbvision->num_frames) {
1123 "mmap: user supplied mapping address is out of range");
1124 mutex_unlock(&usbvision->lock);
1128 /* VM_IO is eventually going to replace PageReserved altogether */
1129 vma->vm_flags |= VM_IO;
1130 vma->vm_flags |= VM_RESERVED; /* avoid to swap out this VMA */
1132 pos = usbvision->frame[i].data;
1135 if (vm_insert_page(vma, start, vmalloc_to_page(pos))) {
1136 PDEBUG(DBG_MMAP, "mmap: vm_insert_page failed");
1137 mutex_unlock(&usbvision->lock);
1145 mutex_unlock(&usbvision->lock);
1151 * Here comes the stuff for radio on usbvision based devices
1154 static int usbvision_radio_open(struct file *file)
1156 struct usb_usbvision *usbvision = video_drvdata(file);
1159 PDEBUG(DBG_IO, "%s:", __func__);
1161 mutex_lock(&usbvision->lock);
1163 if (usbvision->user) {
1164 dev_err(&usbvision->rdev->dev,
1165 "%s: Someone tried to open an already opened USBVision Radio!\n",
1171 usbvision_reset_powerOffTimer(usbvision);
1172 if (usbvision->power == 0) {
1173 usbvision_power_on(usbvision);
1174 usbvision_i2c_register(usbvision);
1178 /* Alternate interface 1 is is the biggest frame size */
1179 errCode = usbvision_set_alternate(usbvision);
1181 usbvision->last_error = errCode;
1186 // If so far no errors then we shall start the radio
1187 usbvision->radio = 1;
1188 call_all(usbvision, tuner, s_radio);
1189 usbvision_set_audio(usbvision, USBVISION_AUDIO_RADIO);
1194 if (PowerOnAtOpen) {
1195 usbvision_i2c_unregister(usbvision);
1196 usbvision_power_off(usbvision);
1197 usbvision->initialized = 0;
1201 mutex_unlock(&usbvision->lock);
1206 static int usbvision_radio_close(struct file *file)
1208 struct usb_usbvision *usbvision = video_drvdata(file);
1213 mutex_lock(&usbvision->lock);
1215 /* Set packet size to 0 */
1216 usbvision->ifaceAlt=0;
1217 errCode = usb_set_interface(usbvision->dev, usbvision->iface,
1218 usbvision->ifaceAlt);
1220 usbvision_audio_off(usbvision);
1224 if (PowerOnAtOpen) {
1225 usbvision_set_powerOffTimer(usbvision);
1226 usbvision->initialized = 0;
1229 mutex_unlock(&usbvision->lock);
1231 if (usbvision->remove_pending) {
1232 printk(KERN_INFO "%s: Final disconnect\n", __func__);
1233 usbvision_release(usbvision);
1236 PDEBUG(DBG_IO, "success");
1241 // Video registration stuff
1245 static const struct v4l2_file_operations usbvision_fops = {
1246 .owner = THIS_MODULE,
1247 .open = usbvision_v4l2_open,
1248 .release = usbvision_v4l2_close,
1249 .read = usbvision_v4l2_read,
1250 .mmap = usbvision_v4l2_mmap,
1251 .ioctl = video_ioctl2,
1252 /* .poll = video_poll, */
1255 static const struct v4l2_ioctl_ops usbvision_ioctl_ops = {
1256 .vidioc_querycap = vidioc_querycap,
1257 .vidioc_enum_fmt_vid_cap = vidioc_enum_fmt_vid_cap,
1258 .vidioc_g_fmt_vid_cap = vidioc_g_fmt_vid_cap,
1259 .vidioc_try_fmt_vid_cap = vidioc_try_fmt_vid_cap,
1260 .vidioc_s_fmt_vid_cap = vidioc_s_fmt_vid_cap,
1261 .vidioc_reqbufs = vidioc_reqbufs,
1262 .vidioc_querybuf = vidioc_querybuf,
1263 .vidioc_qbuf = vidioc_qbuf,
1264 .vidioc_dqbuf = vidioc_dqbuf,
1265 .vidioc_s_std = vidioc_s_std,
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_streamon = vidioc_streamon,
1275 .vidioc_streamoff = vidioc_streamoff,
1276 #ifdef CONFIG_VIDEO_V4L1_COMPAT
1277 /* .vidiocgmbuf = vidiocgmbuf, */
1279 .vidioc_g_tuner = vidioc_g_tuner,
1280 .vidioc_s_tuner = vidioc_s_tuner,
1281 .vidioc_g_frequency = vidioc_g_frequency,
1282 .vidioc_s_frequency = vidioc_s_frequency,
1283 #ifdef CONFIG_VIDEO_ADV_DEBUG
1284 .vidioc_g_register = vidioc_g_register,
1285 .vidioc_s_register = vidioc_s_register,
1289 static struct video_device usbvision_video_template = {
1290 .fops = &usbvision_fops,
1291 .ioctl_ops = &usbvision_ioctl_ops,
1292 .name = "usbvision-video",
1293 .release = video_device_release,
1294 .tvnorms = USBVISION_NORMS,
1295 .current_norm = V4L2_STD_PAL
1300 static const struct v4l2_file_operations usbvision_radio_fops = {
1301 .owner = THIS_MODULE,
1302 .open = usbvision_radio_open,
1303 .release = usbvision_radio_close,
1304 .ioctl = video_ioctl2,
1307 static const struct v4l2_ioctl_ops usbvision_radio_ioctl_ops = {
1308 .vidioc_querycap = vidioc_querycap,
1309 .vidioc_enum_input = vidioc_enum_input,
1310 .vidioc_g_input = vidioc_g_input,
1311 .vidioc_s_input = vidioc_s_input,
1312 .vidioc_queryctrl = vidioc_queryctrl,
1313 .vidioc_g_audio = vidioc_g_audio,
1314 .vidioc_s_audio = vidioc_s_audio,
1315 .vidioc_g_ctrl = vidioc_g_ctrl,
1316 .vidioc_s_ctrl = vidioc_s_ctrl,
1317 .vidioc_g_tuner = vidioc_g_tuner,
1318 .vidioc_s_tuner = vidioc_s_tuner,
1319 .vidioc_g_frequency = vidioc_g_frequency,
1320 .vidioc_s_frequency = vidioc_s_frequency,
1323 static struct video_device usbvision_radio_template = {
1324 .fops = &usbvision_radio_fops,
1325 .name = "usbvision-radio",
1326 .release = video_device_release,
1327 .ioctl_ops = &usbvision_radio_ioctl_ops,
1329 .tvnorms = USBVISION_NORMS,
1330 .current_norm = V4L2_STD_PAL
1334 static struct video_device *usbvision_vdev_init(struct usb_usbvision *usbvision,
1335 struct video_device *vdev_template,
1338 struct usb_device *usb_dev = usbvision->dev;
1339 struct video_device *vdev;
1341 if (usb_dev == NULL) {
1342 dev_err(&usbvision->dev->dev,
1343 "%s: usbvision->dev is not set\n", __func__);
1347 vdev = video_device_alloc();
1351 *vdev = *vdev_template;
1352 vdev->v4l2_dev = &usbvision->v4l2_dev;
1353 snprintf(vdev->name, sizeof(vdev->name), "%s", name);
1354 video_set_drvdata(vdev, usbvision);
1358 // unregister video4linux devices
1359 static void usbvision_unregister_video(struct usb_usbvision *usbvision)
1362 if (usbvision->rdev) {
1363 PDEBUG(DBG_PROBE, "unregister %s [v4l2]",
1364 video_device_node_name(usbvision->rdev));
1365 if (video_is_registered(usbvision->rdev)) {
1366 video_unregister_device(usbvision->rdev);
1368 video_device_release(usbvision->rdev);
1370 usbvision->rdev = NULL;
1374 if (usbvision->vdev) {
1375 PDEBUG(DBG_PROBE, "unregister %s [v4l2]",
1376 video_device_node_name(usbvision->vdev));
1377 if (video_is_registered(usbvision->vdev)) {
1378 video_unregister_device(usbvision->vdev);
1380 video_device_release(usbvision->vdev);
1382 usbvision->vdev = NULL;
1386 // register video4linux devices
1387 static int __devinit usbvision_register_video(struct usb_usbvision *usbvision)
1390 usbvision->vdev = usbvision_vdev_init(usbvision,
1391 &usbvision_video_template,
1393 if (usbvision->vdev == NULL) {
1396 if (video_register_device(usbvision->vdev,
1401 printk(KERN_INFO "USBVision[%d]: registered USBVision Video device %s [v4l2]\n",
1402 usbvision->nr, video_device_node_name(usbvision->vdev));
1405 if (usbvision_device_data[usbvision->DevModel].Radio) {
1406 // usbvision has radio
1407 usbvision->rdev = usbvision_vdev_init(usbvision,
1408 &usbvision_radio_template,
1410 if (usbvision->rdev == NULL) {
1413 if (video_register_device(usbvision->rdev,
1418 printk(KERN_INFO "USBVision[%d]: registered USBVision Radio device %s [v4l2]\n",
1419 usbvision->nr, video_device_node_name(usbvision->rdev));
1425 dev_err(&usbvision->dev->dev,
1426 "USBVision[%d]: video_register_device() failed\n",
1428 usbvision_unregister_video(usbvision);
1435 * This code allocates the struct usb_usbvision.
1436 * It is filled with default values.
1438 * Returns NULL on error, a pointer to usb_usbvision else.
1441 static struct usb_usbvision *usbvision_alloc(struct usb_device *dev,
1442 struct usb_interface *intf)
1444 struct usb_usbvision *usbvision;
1446 usbvision = kzalloc(sizeof(struct usb_usbvision), GFP_KERNEL);
1447 if (usbvision == NULL)
1450 usbvision->dev = dev;
1451 if (v4l2_device_register(&intf->dev, &usbvision->v4l2_dev))
1454 mutex_init(&usbvision->lock); /* available */
1456 // prepare control urb for control messages during interrupts
1457 usbvision->ctrlUrb = usb_alloc_urb(USBVISION_URB_FRAMES, GFP_KERNEL);
1458 if (usbvision->ctrlUrb == NULL)
1460 init_waitqueue_head(&usbvision->ctrlUrb_wq);
1462 usbvision_init_powerOffTimer(usbvision);
1467 v4l2_device_unregister(&usbvision->v4l2_dev);
1474 * usbvision_release()
1476 * This code does final release of struct usb_usbvision. This happens
1477 * after the device is disconnected -and- all clients closed their files.
1480 static void usbvision_release(struct usb_usbvision *usbvision)
1482 PDEBUG(DBG_PROBE, "");
1484 mutex_lock(&usbvision->lock);
1486 usbvision_reset_powerOffTimer(usbvision);
1488 usbvision->initialized = 0;
1490 mutex_unlock(&usbvision->lock);
1492 usbvision_remove_sysfs(usbvision->vdev);
1493 usbvision_unregister_video(usbvision);
1495 if (usbvision->ctrlUrb) {
1496 usb_free_urb(usbvision->ctrlUrb);
1499 v4l2_device_unregister(&usbvision->v4l2_dev);
1502 PDEBUG(DBG_PROBE, "success");
1506 /*********************** usb interface **********************************/
1508 static void usbvision_configure_video(struct usb_usbvision *usbvision)
1512 if (usbvision == NULL)
1515 model = usbvision->DevModel;
1516 usbvision->palette = usbvision_v4l2_format[2]; // V4L2_PIX_FMT_RGB24;
1518 if (usbvision_device_data[usbvision->DevModel].Vin_Reg2_override) {
1519 usbvision->Vin_Reg2_Preset =
1520 usbvision_device_data[usbvision->DevModel].Vin_Reg2;
1522 usbvision->Vin_Reg2_Preset = 0;
1525 usbvision->tvnormId = usbvision_device_data[model].VideoNorm;
1527 usbvision->video_inputs = usbvision_device_data[model].VideoChannels;
1528 usbvision->ctl_input = 0;
1530 /* This should be here to make i2c clients to be able to register */
1531 /* first switch off audio */
1532 usbvision_audio_off(usbvision);
1533 if (!PowerOnAtOpen) {
1534 /* and then power up the noisy tuner */
1535 usbvision_power_on(usbvision);
1536 usbvision_i2c_register(usbvision);
1543 * This procedure queries device descriptor and accepts the interface
1544 * if it looks like USBVISION video device
1547 static int __devinit usbvision_probe(struct usb_interface *intf,
1548 const struct usb_device_id *devid)
1550 struct usb_device *dev = usb_get_dev(interface_to_usbdev(intf));
1551 struct usb_interface *uif;
1552 __u8 ifnum = intf->altsetting->desc.bInterfaceNumber;
1553 const struct usb_host_interface *interface;
1554 struct usb_usbvision *usbvision = NULL;
1555 const struct usb_endpoint_descriptor *endpoint;
1558 PDEBUG(DBG_PROBE, "VID=%#04x, PID=%#04x, ifnum=%u",
1559 dev->descriptor.idVendor,
1560 dev->descriptor.idProduct, ifnum);
1562 model = devid->driver_info;
1563 if ( (model<0) || (model>=usbvision_device_data_size) ) {
1564 PDEBUG(DBG_PROBE, "model out of bounds %d",model);
1567 printk(KERN_INFO "%s: %s found\n", __func__,
1568 usbvision_device_data[model].ModelString);
1570 if (usbvision_device_data[model].Interface >= 0) {
1571 interface = &dev->actconfig->interface[usbvision_device_data[model].Interface]->altsetting[0];
1573 interface = &dev->actconfig->interface[ifnum]->altsetting[0];
1575 endpoint = &interface->endpoint[1].desc;
1576 if (!usb_endpoint_xfer_isoc(endpoint)) {
1577 dev_err(&intf->dev, "%s: interface %d. has non-ISO endpoint!\n",
1579 dev_err(&intf->dev, "%s: Endpoint attributes %d",
1580 __func__, endpoint->bmAttributes);
1583 if (usb_endpoint_dir_out(endpoint)) {
1584 dev_err(&intf->dev, "%s: interface %d. has ISO OUT endpoint!\n",
1589 usbvision = usbvision_alloc(dev, intf);
1590 if (usbvision == NULL) {
1591 dev_err(&intf->dev, "%s: couldn't allocate USBVision struct\n", __func__);
1595 if (dev->descriptor.bNumConfigurations > 1) {
1596 usbvision->bridgeType = BRIDGE_NT1004;
1597 } else if (model == DAZZLE_DVC_90_REV_1_SECAM) {
1598 usbvision->bridgeType = BRIDGE_NT1005;
1600 usbvision->bridgeType = BRIDGE_NT1003;
1602 PDEBUG(DBG_PROBE, "bridgeType %d", usbvision->bridgeType);
1604 mutex_lock(&usbvision->lock);
1606 /* compute alternate max packet sizes */
1607 uif = dev->actconfig->interface[0];
1609 usbvision->num_alt=uif->num_altsetting;
1610 PDEBUG(DBG_PROBE, "Alternate settings: %i",usbvision->num_alt);
1611 usbvision->alt_max_pkt_size = kmalloc(32*
1612 usbvision->num_alt,GFP_KERNEL);
1613 if (usbvision->alt_max_pkt_size == NULL) {
1614 dev_err(&intf->dev, "usbvision: out of memory!\n");
1615 mutex_unlock(&usbvision->lock);
1619 for (i = 0; i < usbvision->num_alt ; i++) {
1620 u16 tmp = le16_to_cpu(uif->altsetting[i].endpoint[1].desc.
1622 usbvision->alt_max_pkt_size[i] =
1623 (tmp & 0x07ff) * (((tmp & 0x1800) >> 11) + 1);
1624 PDEBUG(DBG_PROBE, "Alternate setting %i, max size= %i",i,
1625 usbvision->alt_max_pkt_size[i]);
1629 usbvision->nr = usbvision_nr++;
1631 usbvision->have_tuner = usbvision_device_data[model].Tuner;
1632 if (usbvision->have_tuner) {
1633 usbvision->tuner_type = usbvision_device_data[model].TunerType;
1636 usbvision->DevModel = model;
1637 usbvision->remove_pending = 0;
1638 usbvision->iface = ifnum;
1639 usbvision->ifaceAlt = 0;
1640 usbvision->video_endp = endpoint->bEndpointAddress;
1641 usbvision->isocPacketSize = 0;
1642 usbvision->usb_bandwidth = 0;
1643 usbvision->user = 0;
1644 usbvision->streaming = Stream_Off;
1645 usbvision_configure_video(usbvision);
1646 usbvision_register_video(usbvision);
1647 mutex_unlock(&usbvision->lock);
1649 usbvision_create_sysfs(usbvision->vdev);
1651 PDEBUG(DBG_PROBE, "success");
1657 * usbvision_disconnect()
1659 * This procedure stops all driver activity, deallocates interface-private
1660 * structure (pointed by 'ptr') and after that driver should be removable
1661 * with no ill consequences.
1664 static void __devexit usbvision_disconnect(struct usb_interface *intf)
1666 struct usb_usbvision *usbvision = to_usbvision(usb_get_intfdata(intf));
1668 PDEBUG(DBG_PROBE, "");
1670 if (usbvision == NULL) {
1671 pr_err("%s: usb_get_intfdata() failed\n", __func__);
1675 mutex_lock(&usbvision->lock);
1677 // At this time we ask to cancel outstanding URBs
1678 usbvision_stop_isoc(usbvision);
1680 v4l2_device_disconnect(&usbvision->v4l2_dev);
1682 if (usbvision->power) {
1683 usbvision_i2c_unregister(usbvision);
1684 usbvision_power_off(usbvision);
1686 usbvision->remove_pending = 1; // Now all ISO data will be ignored
1688 usb_put_dev(usbvision->dev);
1689 usbvision->dev = NULL; // USB device is no more
1691 mutex_unlock(&usbvision->lock);
1693 if (usbvision->user) {
1694 printk(KERN_INFO "%s: In use, disconnect pending\n",
1696 wake_up_interruptible(&usbvision->wait_frame);
1697 wake_up_interruptible(&usbvision->wait_stream);
1699 usbvision_release(usbvision);
1702 PDEBUG(DBG_PROBE, "success");
1705 static struct usb_driver usbvision_driver = {
1706 .name = "usbvision",
1707 .id_table = usbvision_table,
1708 .probe = usbvision_probe,
1709 .disconnect = __devexit_p(usbvision_disconnect),
1715 * This code is run to initialize the driver.
1718 static int __init usbvision_init(void)
1722 PDEBUG(DBG_PROBE, "");
1724 PDEBUG(DBG_IO, "IO debugging is enabled [video]");
1725 PDEBUG(DBG_PROBE, "PROBE debugging is enabled [video]");
1726 PDEBUG(DBG_MMAP, "MMAP debugging is enabled [video]");
1728 /* disable planar mode support unless compression enabled */
1729 if (isocMode != ISOC_MODE_COMPRESS ) {
1730 // FIXME : not the right way to set supported flag
1731 usbvision_v4l2_format[6].supported = 0; // V4L2_PIX_FMT_YVU420
1732 usbvision_v4l2_format[7].supported = 0; // V4L2_PIX_FMT_YUV422P
1735 errCode = usb_register(&usbvision_driver);
1738 printk(KERN_INFO DRIVER_DESC " : " USBVISION_VERSION_STRING "\n");
1739 PDEBUG(DBG_PROBE, "success");
1744 static void __exit usbvision_exit(void)
1746 PDEBUG(DBG_PROBE, "");
1748 usb_deregister(&usbvision_driver);
1749 PDEBUG(DBG_PROBE, "success");
1752 module_init(usbvision_init);
1753 module_exit(usbvision_exit);
1756 * Overrides for Emacs so that we follow Linus's tabbing style.
1757 * ---------------------------------------------------------------------------