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/kernel.h>
49 #include <linux/list.h>
50 #include <linux/timer.h>
51 #include <linux/slab.h>
53 #include <linux/highmem.h>
54 #include <linux/vmalloc.h>
55 #include <linux/module.h>
56 #include <linux/init.h>
57 #include <linux/spinlock.h>
59 #include <linux/videodev2.h>
60 #include <linux/i2c.h>
62 #include <media/saa7115.h>
63 #include <media/v4l2-common.h>
64 #include <media/v4l2-ioctl.h>
65 #include <media/tuner.h>
67 #include <linux/workqueue.h>
69 #include "usbvision.h"
70 #include "usbvision-cards.h"
72 #define DRIVER_AUTHOR \
73 "Joerg Heckenbach <joerg@heckenbach-aw.de>, " \
74 "Dwaine Garden <DwaineGarden@rogers.com>"
75 #define DRIVER_NAME "usbvision"
76 #define DRIVER_ALIAS "USBVision"
77 #define DRIVER_DESC "USBVision USB Video Device Driver for Linux"
78 #define DRIVER_LICENSE "GPL"
79 #define USBVISION_VERSION_STRING "0.9.11"
81 #define ENABLE_HEXDUMP 0 /* Enable if you need it */
84 #ifdef USBVISION_DEBUG
85 #define PDEBUG(level, fmt, args...) { \
86 if (video_debug & (level)) \
87 printk(KERN_INFO KBUILD_MODNAME ":[%s:%d] " fmt, \
88 __func__, __LINE__ , ## args); \
91 #define PDEBUG(level, fmt, args...) do {} while (0)
94 #define DBG_IO (1 << 1)
95 #define DBG_PROBE (1 << 2)
96 #define DBG_MMAP (1 << 3)
98 /* String operations */
99 #define rmspace(str) while (*str == ' ') str++;
100 #define goto2next(str) while (*str != ' ') str++; while (*str == ' ') str++;
103 /* sequential number of usbvision device */
104 static int usbvision_nr;
106 static struct usbvision_v4l2_format_st usbvision_v4l2_format[] = {
107 { 1, 1, 8, V4L2_PIX_FMT_GREY , "GREY" },
108 { 1, 2, 16, V4L2_PIX_FMT_RGB565 , "RGB565" },
109 { 1, 3, 24, V4L2_PIX_FMT_RGB24 , "RGB24" },
110 { 1, 4, 32, V4L2_PIX_FMT_RGB32 , "RGB32" },
111 { 1, 2, 16, V4L2_PIX_FMT_RGB555 , "RGB555" },
112 { 1, 2, 16, V4L2_PIX_FMT_YUYV , "YUV422" },
113 { 1, 2, 12, V4L2_PIX_FMT_YVU420 , "YUV420P" }, /* 1.5 ! */
114 { 1, 2, 16, V4L2_PIX_FMT_YUV422P , "YUV422P" }
117 /* Function prototypes */
118 static void usbvision_release(struct usb_usbvision *usbvision);
120 /* Default initialization of device driver parameters */
121 /* Set the default format for ISOC endpoint */
122 static int isoc_mode = ISOC_MODE_COMPRESS;
123 /* Set the default Debug Mode of the device driver */
124 static int video_debug;
125 /* Set the default device to power on at startup */
126 static int power_on_at_open = 1;
127 /* Sequential Number of Video Device */
128 static int video_nr = -1;
129 /* Sequential Number of Radio Device */
130 static int radio_nr = -1;
132 /* Grab parameters for the device driver */
134 /* Showing parameters under SYSFS */
135 module_param(isoc_mode, int, 0444);
136 module_param(video_debug, int, 0444);
137 module_param(power_on_at_open, int, 0444);
138 module_param(video_nr, int, 0444);
139 module_param(radio_nr, int, 0444);
141 MODULE_PARM_DESC(isoc_mode, " Set the default format for ISOC endpoint. Default: 0x60 (Compression On)");
142 MODULE_PARM_DESC(video_debug, " Set the default Debug Mode of the device driver. Default: 0 (Off)");
143 MODULE_PARM_DESC(power_on_at_open, " Set the default device to power on when device is opened. Default: 1 (On)");
144 MODULE_PARM_DESC(video_nr, "Set video device number (/dev/videoX). Default: -1 (autodetect)");
145 MODULE_PARM_DESC(radio_nr, "Set radio device number (/dev/radioX). Default: -1 (autodetect)");
149 MODULE_AUTHOR(DRIVER_AUTHOR);
150 MODULE_DESCRIPTION(DRIVER_DESC);
151 MODULE_LICENSE(DRIVER_LICENSE);
152 MODULE_VERSION(USBVISION_VERSION_STRING);
153 MODULE_ALIAS(DRIVER_ALIAS);
156 /*****************************************************************************/
157 /* SYSFS Code - Copied from the stv680.c usb module. */
158 /* Device information is located at /sys/class/video4linux/video0 */
159 /* Device parameters information is located at /sys/module/usbvision */
160 /* Device USB Information is located at */
161 /* /sys/bus/usb/drivers/USBVision Video Grabber */
162 /*****************************************************************************/
164 #define YES_NO(x) ((x) ? "Yes" : "No")
166 static inline struct usb_usbvision *cd_to_usbvision(struct device *cd)
168 struct video_device *vdev =
169 container_of(cd, struct video_device, dev);
170 return video_get_drvdata(vdev);
173 static ssize_t show_version(struct device *cd,
174 struct device_attribute *attr, char *buf)
176 return sprintf(buf, "%s\n", USBVISION_VERSION_STRING);
178 static DEVICE_ATTR(version, S_IRUGO, show_version, NULL);
180 static ssize_t show_model(struct device *cd,
181 struct device_attribute *attr, char *buf)
183 struct video_device *vdev =
184 container_of(cd, struct video_device, dev);
185 struct usb_usbvision *usbvision = video_get_drvdata(vdev);
186 return sprintf(buf, "%s\n",
187 usbvision_device_data[usbvision->dev_model].model_string);
189 static DEVICE_ATTR(model, S_IRUGO, show_model, NULL);
191 static ssize_t show_hue(struct device *cd,
192 struct device_attribute *attr, char *buf)
194 struct video_device *vdev =
195 container_of(cd, struct video_device, dev);
196 struct usb_usbvision *usbvision = video_get_drvdata(vdev);
197 struct v4l2_control ctrl;
198 ctrl.id = V4L2_CID_HUE;
201 call_all(usbvision, core, g_ctrl, &ctrl);
202 return sprintf(buf, "%d\n", ctrl.value);
204 static DEVICE_ATTR(hue, S_IRUGO, show_hue, NULL);
206 static ssize_t show_contrast(struct device *cd,
207 struct device_attribute *attr, char *buf)
209 struct video_device *vdev =
210 container_of(cd, struct video_device, dev);
211 struct usb_usbvision *usbvision = video_get_drvdata(vdev);
212 struct v4l2_control ctrl;
213 ctrl.id = V4L2_CID_CONTRAST;
216 call_all(usbvision, core, g_ctrl, &ctrl);
217 return sprintf(buf, "%d\n", ctrl.value);
219 static DEVICE_ATTR(contrast, S_IRUGO, show_contrast, NULL);
221 static ssize_t show_brightness(struct device *cd,
222 struct device_attribute *attr, char *buf)
224 struct video_device *vdev =
225 container_of(cd, struct video_device, dev);
226 struct usb_usbvision *usbvision = video_get_drvdata(vdev);
227 struct v4l2_control ctrl;
228 ctrl.id = V4L2_CID_BRIGHTNESS;
231 call_all(usbvision, core, g_ctrl, &ctrl);
232 return sprintf(buf, "%d\n", ctrl.value);
234 static DEVICE_ATTR(brightness, S_IRUGO, show_brightness, NULL);
236 static ssize_t show_saturation(struct device *cd,
237 struct device_attribute *attr, char *buf)
239 struct video_device *vdev =
240 container_of(cd, struct video_device, dev);
241 struct usb_usbvision *usbvision = video_get_drvdata(vdev);
242 struct v4l2_control ctrl;
243 ctrl.id = V4L2_CID_SATURATION;
246 call_all(usbvision, core, g_ctrl, &ctrl);
247 return sprintf(buf, "%d\n", ctrl.value);
249 static DEVICE_ATTR(saturation, S_IRUGO, show_saturation, NULL);
251 static ssize_t show_streaming(struct device *cd,
252 struct device_attribute *attr, char *buf)
254 struct video_device *vdev =
255 container_of(cd, struct video_device, dev);
256 struct usb_usbvision *usbvision = video_get_drvdata(vdev);
257 return sprintf(buf, "%s\n",
258 YES_NO(usbvision->streaming == stream_on ? 1 : 0));
260 static DEVICE_ATTR(streaming, S_IRUGO, show_streaming, NULL);
262 static ssize_t show_compression(struct device *cd,
263 struct device_attribute *attr, char *buf)
265 struct video_device *vdev =
266 container_of(cd, struct video_device, dev);
267 struct usb_usbvision *usbvision = video_get_drvdata(vdev);
268 return sprintf(buf, "%s\n",
269 YES_NO(usbvision->isoc_mode == ISOC_MODE_COMPRESS));
271 static DEVICE_ATTR(compression, S_IRUGO, show_compression, NULL);
273 static ssize_t show_device_bridge(struct device *cd,
274 struct device_attribute *attr, char *buf)
276 struct video_device *vdev =
277 container_of(cd, struct video_device, dev);
278 struct usb_usbvision *usbvision = video_get_drvdata(vdev);
279 return sprintf(buf, "%d\n", usbvision->bridge_type);
281 static DEVICE_ATTR(bridge, S_IRUGO, show_device_bridge, NULL);
283 static void usbvision_create_sysfs(struct video_device *vdev)
290 res = device_create_file(&vdev->dev, &dev_attr_version);
293 res = device_create_file(&vdev->dev, &dev_attr_model);
296 res = device_create_file(&vdev->dev, &dev_attr_hue);
299 res = device_create_file(&vdev->dev, &dev_attr_contrast);
302 res = device_create_file(&vdev->dev, &dev_attr_brightness);
305 res = device_create_file(&vdev->dev, &dev_attr_saturation);
308 res = device_create_file(&vdev->dev, &dev_attr_streaming);
311 res = device_create_file(&vdev->dev, &dev_attr_compression);
314 res = device_create_file(&vdev->dev, &dev_attr_bridge);
319 dev_err(&vdev->dev, "%s error: %d\n", __func__, res);
322 static void usbvision_remove_sysfs(struct video_device *vdev)
325 device_remove_file(&vdev->dev, &dev_attr_version);
326 device_remove_file(&vdev->dev, &dev_attr_model);
327 device_remove_file(&vdev->dev, &dev_attr_hue);
328 device_remove_file(&vdev->dev, &dev_attr_contrast);
329 device_remove_file(&vdev->dev, &dev_attr_brightness);
330 device_remove_file(&vdev->dev, &dev_attr_saturation);
331 device_remove_file(&vdev->dev, &dev_attr_streaming);
332 device_remove_file(&vdev->dev, &dev_attr_compression);
333 device_remove_file(&vdev->dev, &dev_attr_bridge);
340 * This is part of Video 4 Linux API. The driver can be opened by one
341 * client only (checks internal counter 'usbvision->user'). The procedure
342 * then allocates buffers needed for video processing.
345 static int usbvision_v4l2_open(struct file *file)
347 struct usb_usbvision *usbvision = video_drvdata(file);
350 PDEBUG(DBG_IO, "open");
352 if (mutex_lock_interruptible(&usbvision->v4l2_lock))
354 usbvision_reset_power_off_timer(usbvision);
359 /* Allocate memory for the scratch ring buffer */
360 err_code = usbvision_scratch_alloc(usbvision);
361 if (isoc_mode == ISOC_MODE_COMPRESS) {
362 /* Allocate intermediate decompression buffers
364 err_code = usbvision_decompress_alloc(usbvision);
367 /* Deallocate all buffers if trouble */
368 usbvision_scratch_free(usbvision);
369 usbvision_decompress_free(usbvision);
373 /* If so far no errors then we shall start the camera */
375 if (usbvision->power == 0) {
376 usbvision_power_on(usbvision);
377 usbvision_i2c_register(usbvision);
380 /* Send init sequence only once, it's large! */
381 if (!usbvision->initialized) {
383 setup_ok = usbvision_setup(usbvision, isoc_mode);
385 usbvision->initialized = 1;
391 usbvision_begin_streaming(usbvision);
392 err_code = usbvision_init_isoc(usbvision);
393 /* device must be initialized before isoc transfer */
394 usbvision_muxsel(usbvision, 0);
397 if (power_on_at_open) {
398 usbvision_i2c_unregister(usbvision);
399 usbvision_power_off(usbvision);
400 usbvision->initialized = 0;
406 usbvision_empty_framequeues(usbvision);
407 mutex_unlock(&usbvision->v4l2_lock);
409 PDEBUG(DBG_IO, "success");
414 * usbvision_v4l2_close()
416 * This is part of Video 4 Linux API. The procedure
417 * stops streaming and deallocates all buffers that were earlier
418 * allocated in usbvision_v4l2_open().
421 static int usbvision_v4l2_close(struct file *file)
423 struct usb_usbvision *usbvision = video_drvdata(file);
425 PDEBUG(DBG_IO, "close");
427 mutex_lock(&usbvision->v4l2_lock);
428 usbvision_audio_off(usbvision);
429 usbvision_restart_isoc(usbvision);
430 usbvision_stop_isoc(usbvision);
432 usbvision_decompress_free(usbvision);
433 usbvision_frames_free(usbvision);
434 usbvision_empty_framequeues(usbvision);
435 usbvision_scratch_free(usbvision);
439 if (power_on_at_open) {
440 /* power off in a little while
441 to avoid off/on every close/open short sequences */
442 usbvision_set_power_off_timer(usbvision);
443 usbvision->initialized = 0;
446 if (usbvision->remove_pending) {
447 printk(KERN_INFO "%s: Final disconnect\n", __func__);
448 usbvision_release(usbvision);
450 mutex_unlock(&usbvision->v4l2_lock);
452 PDEBUG(DBG_IO, "success");
460 * This is part of Video 4 Linux API. The procedure handles ioctl() calls.
463 #ifdef CONFIG_VIDEO_ADV_DEBUG
464 static int vidioc_g_register(struct file *file, void *priv,
465 struct v4l2_dbg_register *reg)
467 struct usb_usbvision *usbvision = video_drvdata(file);
470 if (!v4l2_chip_match_host(®->match))
472 /* NT100x has a 8-bit register space */
473 err_code = usbvision_read_reg(usbvision, reg->reg&0xff);
475 dev_err(&usbvision->vdev->dev,
476 "%s: VIDIOC_DBG_G_REGISTER failed: error %d\n",
485 static int vidioc_s_register(struct file *file, void *priv,
486 struct v4l2_dbg_register *reg)
488 struct usb_usbvision *usbvision = video_drvdata(file);
491 if (!v4l2_chip_match_host(®->match))
493 /* NT100x has a 8-bit register space */
494 err_code = usbvision_write_reg(usbvision, reg->reg & 0xff, reg->val);
496 dev_err(&usbvision->vdev->dev,
497 "%s: VIDIOC_DBG_S_REGISTER failed: error %d\n",
505 static int vidioc_querycap(struct file *file, void *priv,
506 struct v4l2_capability *vc)
508 struct usb_usbvision *usbvision = video_drvdata(file);
510 strlcpy(vc->driver, "USBVision", sizeof(vc->driver));
512 usbvision_device_data[usbvision->dev_model].model_string,
514 usb_make_path(usbvision->dev, vc->bus_info, sizeof(vc->bus_info));
515 vc->capabilities = V4L2_CAP_VIDEO_CAPTURE |
519 (usbvision->have_tuner ? V4L2_CAP_TUNER : 0);
523 static int vidioc_enum_input(struct file *file, void *priv,
524 struct v4l2_input *vi)
526 struct usb_usbvision *usbvision = video_drvdata(file);
529 if (vi->index >= usbvision->video_inputs)
531 if (usbvision->have_tuner)
534 chan = vi->index + 1; /* skip Television string*/
536 /* Determine the requested input characteristics
537 specific for each usbvision card model */
540 if (usbvision_device_data[usbvision->dev_model].video_channels == 4) {
541 strcpy(vi->name, "White Video Input");
543 strcpy(vi->name, "Television");
544 vi->type = V4L2_INPUT_TYPE_TUNER;
547 vi->std = USBVISION_NORMS;
551 vi->type = V4L2_INPUT_TYPE_CAMERA;
552 if (usbvision_device_data[usbvision->dev_model].video_channels == 4)
553 strcpy(vi->name, "Green Video Input");
555 strcpy(vi->name, "Composite Video Input");
556 vi->std = V4L2_STD_PAL;
559 vi->type = V4L2_INPUT_TYPE_CAMERA;
560 if (usbvision_device_data[usbvision->dev_model].video_channels == 4)
561 strcpy(vi->name, "Yellow Video Input");
563 strcpy(vi->name, "S-Video Input");
564 vi->std = V4L2_STD_PAL;
567 vi->type = V4L2_INPUT_TYPE_CAMERA;
568 strcpy(vi->name, "Red Video Input");
569 vi->std = V4L2_STD_PAL;
575 static int vidioc_g_input(struct file *file, void *priv, unsigned int *input)
577 struct usb_usbvision *usbvision = video_drvdata(file);
579 *input = usbvision->ctl_input;
583 static int vidioc_s_input(struct file *file, void *priv, unsigned int input)
585 struct usb_usbvision *usbvision = video_drvdata(file);
587 if (input >= usbvision->video_inputs)
590 usbvision_muxsel(usbvision, input);
591 usbvision_set_input(usbvision);
592 usbvision_set_output(usbvision,
594 usbvision->curheight);
598 static int vidioc_s_std(struct file *file, void *priv, v4l2_std_id *id)
600 struct usb_usbvision *usbvision = video_drvdata(file);
602 usbvision->tvnorm_id = *id;
604 call_all(usbvision, core, s_std, usbvision->tvnorm_id);
605 /* propagate the change to the decoder */
606 usbvision_muxsel(usbvision, usbvision->ctl_input);
611 static int vidioc_g_tuner(struct file *file, void *priv,
612 struct v4l2_tuner *vt)
614 struct usb_usbvision *usbvision = video_drvdata(file);
616 if (!usbvision->have_tuner || vt->index) /* Only tuner 0 */
618 if (usbvision->radio) {
619 strcpy(vt->name, "Radio");
620 vt->type = V4L2_TUNER_RADIO;
622 strcpy(vt->name, "Television");
624 /* Let clients fill in the remainder of this struct */
625 call_all(usbvision, tuner, g_tuner, vt);
630 static int vidioc_s_tuner(struct file *file, void *priv,
631 struct v4l2_tuner *vt)
633 struct usb_usbvision *usbvision = video_drvdata(file);
635 /* Only no or one tuner for now */
636 if (!usbvision->have_tuner || vt->index)
638 /* let clients handle this */
639 call_all(usbvision, tuner, s_tuner, vt);
644 static int vidioc_g_frequency(struct file *file, void *priv,
645 struct v4l2_frequency *freq)
647 struct usb_usbvision *usbvision = video_drvdata(file);
649 freq->tuner = 0; /* Only one tuner */
650 if (usbvision->radio)
651 freq->type = V4L2_TUNER_RADIO;
653 freq->type = V4L2_TUNER_ANALOG_TV;
654 freq->frequency = usbvision->freq;
659 static int vidioc_s_frequency(struct file *file, void *priv,
660 struct v4l2_frequency *freq)
662 struct usb_usbvision *usbvision = video_drvdata(file);
664 /* Only no or one tuner for now */
665 if (!usbvision->have_tuner || freq->tuner)
668 usbvision->freq = freq->frequency;
669 call_all(usbvision, tuner, s_frequency, freq);
674 static int vidioc_g_audio(struct file *file, void *priv, struct v4l2_audio *a)
676 struct usb_usbvision *usbvision = video_drvdata(file);
678 if (usbvision->radio)
679 strcpy(a->name, "Radio");
681 strcpy(a->name, "TV");
686 static int vidioc_s_audio(struct file *file, void *fh,
687 const struct v4l2_audio *a)
694 static int vidioc_queryctrl(struct file *file, void *priv,
695 struct v4l2_queryctrl *ctrl)
697 struct usb_usbvision *usbvision = video_drvdata(file);
699 call_all(usbvision, core, queryctrl, ctrl);
707 static int vidioc_g_ctrl(struct file *file, void *priv,
708 struct v4l2_control *ctrl)
710 struct usb_usbvision *usbvision = video_drvdata(file);
712 call_all(usbvision, core, g_ctrl, ctrl);
716 static int vidioc_s_ctrl(struct file *file, void *priv,
717 struct v4l2_control *ctrl)
719 struct usb_usbvision *usbvision = video_drvdata(file);
721 call_all(usbvision, core, s_ctrl, ctrl);
725 static int vidioc_reqbufs(struct file *file,
726 void *priv, struct v4l2_requestbuffers *vr)
728 struct usb_usbvision *usbvision = video_drvdata(file);
731 RESTRICT_TO_RANGE(vr->count, 1, USBVISION_NUMFRAMES);
733 /* Check input validity:
734 the user must do a VIDEO CAPTURE and MMAP method. */
735 if (vr->memory != V4L2_MEMORY_MMAP)
738 if (usbvision->streaming == stream_on) {
739 ret = usbvision_stream_interrupt(usbvision);
744 usbvision_frames_free(usbvision);
745 usbvision_empty_framequeues(usbvision);
746 vr->count = usbvision_frames_alloc(usbvision, vr->count);
748 usbvision->cur_frame = NULL;
753 static int vidioc_querybuf(struct file *file,
754 void *priv, struct v4l2_buffer *vb)
756 struct usb_usbvision *usbvision = video_drvdata(file);
757 struct usbvision_frame *frame;
759 /* FIXME : must control
760 that buffers are mapped (VIDIOC_REQBUFS has been called) */
761 if (vb->index >= usbvision->num_frames)
763 /* Updating the corresponding frame state */
765 frame = &usbvision->frame[vb->index];
766 if (frame->grabstate >= frame_state_ready)
767 vb->flags |= V4L2_BUF_FLAG_QUEUED;
768 if (frame->grabstate >= frame_state_done)
769 vb->flags |= V4L2_BUF_FLAG_DONE;
770 if (frame->grabstate == frame_state_unused)
771 vb->flags |= V4L2_BUF_FLAG_MAPPED;
772 vb->memory = V4L2_MEMORY_MMAP;
774 vb->m.offset = vb->index * PAGE_ALIGN(usbvision->max_frame_size);
776 vb->memory = V4L2_MEMORY_MMAP;
777 vb->field = V4L2_FIELD_NONE;
778 vb->length = usbvision->curwidth *
779 usbvision->curheight *
780 usbvision->palette.bytes_per_pixel;
781 vb->timestamp = usbvision->frame[vb->index].timestamp;
782 vb->sequence = usbvision->frame[vb->index].sequence;
786 static int vidioc_qbuf(struct file *file, void *priv, struct v4l2_buffer *vb)
788 struct usb_usbvision *usbvision = video_drvdata(file);
789 struct usbvision_frame *frame;
790 unsigned long lock_flags;
792 /* FIXME : works only on VIDEO_CAPTURE MODE, MMAP. */
793 if (vb->index >= usbvision->num_frames)
796 frame = &usbvision->frame[vb->index];
798 if (frame->grabstate != frame_state_unused)
801 /* Mark it as ready and enqueue frame */
802 frame->grabstate = frame_state_ready;
803 frame->scanstate = scan_state_scanning;
804 frame->scanlength = 0; /* Accumulated in usbvision_parse_data() */
806 vb->flags &= ~V4L2_BUF_FLAG_DONE;
808 /* set v4l2_format index */
809 frame->v4l2_format = usbvision->palette;
811 spin_lock_irqsave(&usbvision->queue_lock, lock_flags);
812 list_add_tail(&usbvision->frame[vb->index].frame, &usbvision->inqueue);
813 spin_unlock_irqrestore(&usbvision->queue_lock, lock_flags);
818 static int vidioc_dqbuf(struct file *file, void *priv, struct v4l2_buffer *vb)
820 struct usb_usbvision *usbvision = video_drvdata(file);
822 struct usbvision_frame *f;
823 unsigned long lock_flags;
825 if (list_empty(&(usbvision->outqueue))) {
826 if (usbvision->streaming == stream_idle)
828 ret = wait_event_interruptible
829 (usbvision->wait_frame,
830 !list_empty(&(usbvision->outqueue)));
835 spin_lock_irqsave(&usbvision->queue_lock, lock_flags);
836 f = list_entry(usbvision->outqueue.next,
837 struct usbvision_frame, frame);
838 list_del(usbvision->outqueue.next);
839 spin_unlock_irqrestore(&usbvision->queue_lock, lock_flags);
841 f->grabstate = frame_state_unused;
843 vb->memory = V4L2_MEMORY_MMAP;
844 vb->flags = V4L2_BUF_FLAG_MAPPED |
845 V4L2_BUF_FLAG_QUEUED |
847 vb->index = f->index;
848 vb->sequence = f->sequence;
849 vb->timestamp = f->timestamp;
850 vb->field = V4L2_FIELD_NONE;
851 vb->bytesused = f->scanlength;
856 static int vidioc_streamon(struct file *file, void *priv, enum v4l2_buf_type i)
858 struct usb_usbvision *usbvision = video_drvdata(file);
860 usbvision->streaming = stream_on;
861 call_all(usbvision, video, s_stream, 1);
866 static int vidioc_streamoff(struct file *file,
867 void *priv, enum v4l2_buf_type type)
869 struct usb_usbvision *usbvision = video_drvdata(file);
871 if (type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
874 if (usbvision->streaming == stream_on) {
875 usbvision_stream_interrupt(usbvision);
876 /* Stop all video streamings */
877 call_all(usbvision, video, s_stream, 0);
879 usbvision_empty_framequeues(usbvision);
884 static int vidioc_enum_fmt_vid_cap(struct file *file, void *priv,
885 struct v4l2_fmtdesc *vfd)
887 if (vfd->index >= USBVISION_SUPPORTED_PALETTES - 1)
889 strcpy(vfd->description, usbvision_v4l2_format[vfd->index].desc);
890 vfd->pixelformat = usbvision_v4l2_format[vfd->index].format;
894 static int vidioc_g_fmt_vid_cap(struct file *file, void *priv,
895 struct v4l2_format *vf)
897 struct usb_usbvision *usbvision = video_drvdata(file);
898 vf->fmt.pix.width = usbvision->curwidth;
899 vf->fmt.pix.height = usbvision->curheight;
900 vf->fmt.pix.pixelformat = usbvision->palette.format;
901 vf->fmt.pix.bytesperline =
902 usbvision->curwidth * usbvision->palette.bytes_per_pixel;
903 vf->fmt.pix.sizeimage = vf->fmt.pix.bytesperline * usbvision->curheight;
904 vf->fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M;
905 vf->fmt.pix.field = V4L2_FIELD_NONE; /* Always progressive image */
910 static int vidioc_try_fmt_vid_cap(struct file *file, void *priv,
911 struct v4l2_format *vf)
913 struct usb_usbvision *usbvision = video_drvdata(file);
916 /* Find requested format in available ones */
917 for (format_idx = 0; format_idx < USBVISION_SUPPORTED_PALETTES; format_idx++) {
918 if (vf->fmt.pix.pixelformat ==
919 usbvision_v4l2_format[format_idx].format) {
920 usbvision->palette = usbvision_v4l2_format[format_idx];
925 if (format_idx == USBVISION_SUPPORTED_PALETTES)
927 RESTRICT_TO_RANGE(vf->fmt.pix.width, MIN_FRAME_WIDTH, MAX_FRAME_WIDTH);
928 RESTRICT_TO_RANGE(vf->fmt.pix.height, MIN_FRAME_HEIGHT, MAX_FRAME_HEIGHT);
930 vf->fmt.pix.bytesperline = vf->fmt.pix.width*
931 usbvision->palette.bytes_per_pixel;
932 vf->fmt.pix.sizeimage = vf->fmt.pix.bytesperline*vf->fmt.pix.height;
937 static int vidioc_s_fmt_vid_cap(struct file *file, void *priv,
938 struct v4l2_format *vf)
940 struct usb_usbvision *usbvision = video_drvdata(file);
943 ret = vidioc_try_fmt_vid_cap(file, priv, vf);
947 /* stop io in case it is already in progress */
948 if (usbvision->streaming == stream_on) {
949 ret = usbvision_stream_interrupt(usbvision);
953 usbvision_frames_free(usbvision);
954 usbvision_empty_framequeues(usbvision);
956 usbvision->cur_frame = NULL;
958 /* by now we are committed to the new data... */
959 usbvision_set_output(usbvision, vf->fmt.pix.width, vf->fmt.pix.height);
964 static ssize_t usbvision_read(struct file *file, char __user *buf,
965 size_t count, loff_t *ppos)
967 struct usb_usbvision *usbvision = video_drvdata(file);
968 int noblock = file->f_flags & O_NONBLOCK;
969 unsigned long lock_flags;
971 struct usbvision_frame *frame;
973 PDEBUG(DBG_IO, "%s: %ld bytes, noblock=%d", __func__,
974 (unsigned long)count, noblock);
976 if (!USBVISION_IS_OPERATIONAL(usbvision) || (buf == NULL))
979 /* This entry point is compatible with the mmap routines
980 so that a user can do either VIDIOC_QBUF/VIDIOC_DQBUF
981 to get frames or call read on the device. */
982 if (!usbvision->num_frames) {
983 /* First, allocate some frames to work with
984 if this has not been done with VIDIOC_REQBUF */
985 usbvision_frames_free(usbvision);
986 usbvision_empty_framequeues(usbvision);
987 usbvision_frames_alloc(usbvision, USBVISION_NUMFRAMES);
990 if (usbvision->streaming != stream_on) {
991 /* no stream is running, make it running ! */
992 usbvision->streaming = stream_on;
993 call_all(usbvision, video, s_stream, 1);
996 /* Then, enqueue as many frames as possible
997 (like a user of VIDIOC_QBUF would do) */
998 for (i = 0; i < usbvision->num_frames; i++) {
999 frame = &usbvision->frame[i];
1000 if (frame->grabstate == frame_state_unused) {
1001 /* Mark it as ready and enqueue frame */
1002 frame->grabstate = frame_state_ready;
1003 frame->scanstate = scan_state_scanning;
1004 /* Accumulated in usbvision_parse_data() */
1005 frame->scanlength = 0;
1007 /* set v4l2_format index */
1008 frame->v4l2_format = usbvision->palette;
1010 spin_lock_irqsave(&usbvision->queue_lock, lock_flags);
1011 list_add_tail(&frame->frame, &usbvision->inqueue);
1012 spin_unlock_irqrestore(&usbvision->queue_lock,
1017 /* Then try to steal a frame (like a VIDIOC_DQBUF would do) */
1018 if (list_empty(&(usbvision->outqueue))) {
1022 ret = wait_event_interruptible
1023 (usbvision->wait_frame,
1024 !list_empty(&(usbvision->outqueue)));
1029 spin_lock_irqsave(&usbvision->queue_lock, lock_flags);
1030 frame = list_entry(usbvision->outqueue.next,
1031 struct usbvision_frame, frame);
1032 list_del(usbvision->outqueue.next);
1033 spin_unlock_irqrestore(&usbvision->queue_lock, lock_flags);
1035 /* An error returns an empty frame */
1036 if (frame->grabstate == frame_state_error) {
1037 frame->bytes_read = 0;
1041 PDEBUG(DBG_IO, "%s: frmx=%d, bytes_read=%ld, scanlength=%ld",
1043 frame->index, frame->bytes_read, frame->scanlength);
1045 /* copy bytes to user space; we allow for partials reads */
1046 if ((count + frame->bytes_read) > (unsigned long)frame->scanlength)
1047 count = frame->scanlength - frame->bytes_read;
1049 if (copy_to_user(buf, frame->data + frame->bytes_read, count))
1052 frame->bytes_read += count;
1053 PDEBUG(DBG_IO, "%s: {copy} count used=%ld, new bytes_read=%ld",
1055 (unsigned long)count, frame->bytes_read);
1057 /* For now, forget the frame if it has not been read in one shot. */
1058 /* if (frame->bytes_read >= frame->scanlength) {*/ /* All data has been read */
1059 frame->bytes_read = 0;
1061 /* Mark it as available to be used again. */
1062 frame->grabstate = frame_state_unused;
1068 static ssize_t usbvision_v4l2_read(struct file *file, char __user *buf,
1069 size_t count, loff_t *ppos)
1071 struct usb_usbvision *usbvision = video_drvdata(file);
1074 if (mutex_lock_interruptible(&usbvision->v4l2_lock))
1075 return -ERESTARTSYS;
1076 res = usbvision_read(file, buf, count, ppos);
1077 mutex_unlock(&usbvision->v4l2_lock);
1081 static int usbvision_mmap(struct file *file, struct vm_area_struct *vma)
1083 unsigned long size = vma->vm_end - vma->vm_start,
1084 start = vma->vm_start;
1087 struct usb_usbvision *usbvision = video_drvdata(file);
1089 PDEBUG(DBG_MMAP, "mmap");
1091 if (!USBVISION_IS_OPERATIONAL(usbvision))
1094 if (!(vma->vm_flags & VM_WRITE) ||
1095 size != PAGE_ALIGN(usbvision->max_frame_size)) {
1099 for (i = 0; i < usbvision->num_frames; i++) {
1100 if (((PAGE_ALIGN(usbvision->max_frame_size)*i) >> PAGE_SHIFT) ==
1104 if (i == usbvision->num_frames) {
1106 "mmap: user supplied mapping address is out of range");
1110 /* VM_IO is eventually going to replace PageReserved altogether */
1111 vma->vm_flags |= VM_IO | VM_DONTEXPAND | VM_DONTDUMP;
1113 pos = usbvision->frame[i].data;
1115 if (vm_insert_page(vma, start, vmalloc_to_page(pos))) {
1116 PDEBUG(DBG_MMAP, "mmap: vm_insert_page failed");
1127 static int usbvision_v4l2_mmap(struct file *file, struct vm_area_struct *vma)
1129 struct usb_usbvision *usbvision = video_drvdata(file);
1132 if (mutex_lock_interruptible(&usbvision->v4l2_lock))
1133 return -ERESTARTSYS;
1134 res = usbvision_mmap(file, vma);
1135 mutex_unlock(&usbvision->v4l2_lock);
1140 * Here comes the stuff for radio on usbvision based devices
1143 static int usbvision_radio_open(struct file *file)
1145 struct usb_usbvision *usbvision = video_drvdata(file);
1148 PDEBUG(DBG_IO, "%s:", __func__);
1150 if (mutex_lock_interruptible(&usbvision->v4l2_lock))
1151 return -ERESTARTSYS;
1152 if (usbvision->user) {
1153 dev_err(&usbvision->rdev->dev,
1154 "%s: Someone tried to open an already opened USBVision Radio!\n",
1158 if (power_on_at_open) {
1159 usbvision_reset_power_off_timer(usbvision);
1160 if (usbvision->power == 0) {
1161 usbvision_power_on(usbvision);
1162 usbvision_i2c_register(usbvision);
1166 /* Alternate interface 1 is is the biggest frame size */
1167 err_code = usbvision_set_alternate(usbvision);
1169 usbvision->last_error = err_code;
1174 /* If so far no errors then we shall start the radio */
1175 usbvision->radio = 1;
1176 call_all(usbvision, tuner, s_radio);
1177 usbvision_set_audio(usbvision, USBVISION_AUDIO_RADIO);
1182 if (power_on_at_open) {
1183 usbvision_i2c_unregister(usbvision);
1184 usbvision_power_off(usbvision);
1185 usbvision->initialized = 0;
1189 mutex_unlock(&usbvision->v4l2_lock);
1194 static int usbvision_radio_close(struct file *file)
1196 struct usb_usbvision *usbvision = video_drvdata(file);
1201 mutex_lock(&usbvision->v4l2_lock);
1202 /* Set packet size to 0 */
1203 usbvision->iface_alt = 0;
1204 err_code = usb_set_interface(usbvision->dev, usbvision->iface,
1205 usbvision->iface_alt);
1207 usbvision_audio_off(usbvision);
1208 usbvision->radio = 0;
1211 if (power_on_at_open) {
1212 usbvision_set_power_off_timer(usbvision);
1213 usbvision->initialized = 0;
1216 if (usbvision->remove_pending) {
1217 printk(KERN_INFO "%s: Final disconnect\n", __func__);
1218 usbvision_release(usbvision);
1221 mutex_unlock(&usbvision->v4l2_lock);
1222 PDEBUG(DBG_IO, "success");
1226 /* Video registration stuff */
1228 /* Video template */
1229 static const struct v4l2_file_operations usbvision_fops = {
1230 .owner = THIS_MODULE,
1231 .open = usbvision_v4l2_open,
1232 .release = usbvision_v4l2_close,
1233 .read = usbvision_v4l2_read,
1234 .mmap = usbvision_v4l2_mmap,
1235 .unlocked_ioctl = video_ioctl2,
1236 /* .poll = video_poll, */
1239 static const struct v4l2_ioctl_ops usbvision_ioctl_ops = {
1240 .vidioc_querycap = vidioc_querycap,
1241 .vidioc_enum_fmt_vid_cap = vidioc_enum_fmt_vid_cap,
1242 .vidioc_g_fmt_vid_cap = vidioc_g_fmt_vid_cap,
1243 .vidioc_try_fmt_vid_cap = vidioc_try_fmt_vid_cap,
1244 .vidioc_s_fmt_vid_cap = vidioc_s_fmt_vid_cap,
1245 .vidioc_reqbufs = vidioc_reqbufs,
1246 .vidioc_querybuf = vidioc_querybuf,
1247 .vidioc_qbuf = vidioc_qbuf,
1248 .vidioc_dqbuf = vidioc_dqbuf,
1249 .vidioc_s_std = vidioc_s_std,
1250 .vidioc_enum_input = vidioc_enum_input,
1251 .vidioc_g_input = vidioc_g_input,
1252 .vidioc_s_input = vidioc_s_input,
1253 .vidioc_queryctrl = vidioc_queryctrl,
1254 .vidioc_g_audio = vidioc_g_audio,
1255 .vidioc_s_audio = vidioc_s_audio,
1256 .vidioc_g_ctrl = vidioc_g_ctrl,
1257 .vidioc_s_ctrl = vidioc_s_ctrl,
1258 .vidioc_streamon = vidioc_streamon,
1259 .vidioc_streamoff = vidioc_streamoff,
1260 .vidioc_g_tuner = vidioc_g_tuner,
1261 .vidioc_s_tuner = vidioc_s_tuner,
1262 .vidioc_g_frequency = vidioc_g_frequency,
1263 .vidioc_s_frequency = vidioc_s_frequency,
1264 #ifdef CONFIG_VIDEO_ADV_DEBUG
1265 .vidioc_g_register = vidioc_g_register,
1266 .vidioc_s_register = vidioc_s_register,
1270 static struct video_device usbvision_video_template = {
1271 .fops = &usbvision_fops,
1272 .ioctl_ops = &usbvision_ioctl_ops,
1273 .name = "usbvision-video",
1274 .release = video_device_release,
1275 .tvnorms = USBVISION_NORMS,
1276 .current_norm = V4L2_STD_PAL
1280 /* Radio template */
1281 static const struct v4l2_file_operations usbvision_radio_fops = {
1282 .owner = THIS_MODULE,
1283 .open = usbvision_radio_open,
1284 .release = usbvision_radio_close,
1285 .unlocked_ioctl = video_ioctl2,
1288 static const struct v4l2_ioctl_ops usbvision_radio_ioctl_ops = {
1289 .vidioc_querycap = vidioc_querycap,
1290 .vidioc_enum_input = vidioc_enum_input,
1291 .vidioc_g_input = vidioc_g_input,
1292 .vidioc_s_input = vidioc_s_input,
1293 .vidioc_queryctrl = vidioc_queryctrl,
1294 .vidioc_g_audio = vidioc_g_audio,
1295 .vidioc_s_audio = vidioc_s_audio,
1296 .vidioc_g_ctrl = vidioc_g_ctrl,
1297 .vidioc_s_ctrl = vidioc_s_ctrl,
1298 .vidioc_g_tuner = vidioc_g_tuner,
1299 .vidioc_s_tuner = vidioc_s_tuner,
1300 .vidioc_g_frequency = vidioc_g_frequency,
1301 .vidioc_s_frequency = vidioc_s_frequency,
1304 static struct video_device usbvision_radio_template = {
1305 .fops = &usbvision_radio_fops,
1306 .name = "usbvision-radio",
1307 .release = video_device_release,
1308 .ioctl_ops = &usbvision_radio_ioctl_ops,
1310 .tvnorms = USBVISION_NORMS,
1311 .current_norm = V4L2_STD_PAL
1315 static struct video_device *usbvision_vdev_init(struct usb_usbvision *usbvision,
1316 struct video_device *vdev_template,
1319 struct usb_device *usb_dev = usbvision->dev;
1320 struct video_device *vdev;
1322 if (usb_dev == NULL) {
1323 dev_err(&usbvision->dev->dev,
1324 "%s: usbvision->dev is not set\n", __func__);
1328 vdev = video_device_alloc();
1331 *vdev = *vdev_template;
1332 vdev->lock = &usbvision->v4l2_lock;
1333 vdev->v4l2_dev = &usbvision->v4l2_dev;
1334 snprintf(vdev->name, sizeof(vdev->name), "%s", name);
1335 video_set_drvdata(vdev, usbvision);
1339 /* unregister video4linux devices */
1340 static void usbvision_unregister_video(struct usb_usbvision *usbvision)
1343 if (usbvision->rdev) {
1344 PDEBUG(DBG_PROBE, "unregister %s [v4l2]",
1345 video_device_node_name(usbvision->rdev));
1346 if (video_is_registered(usbvision->rdev))
1347 video_unregister_device(usbvision->rdev);
1349 video_device_release(usbvision->rdev);
1350 usbvision->rdev = NULL;
1354 if (usbvision->vdev) {
1355 PDEBUG(DBG_PROBE, "unregister %s [v4l2]",
1356 video_device_node_name(usbvision->vdev));
1357 if (video_is_registered(usbvision->vdev))
1358 video_unregister_device(usbvision->vdev);
1360 video_device_release(usbvision->vdev);
1361 usbvision->vdev = NULL;
1365 /* register video4linux devices */
1366 static int __devinit usbvision_register_video(struct usb_usbvision *usbvision)
1369 usbvision->vdev = usbvision_vdev_init(usbvision,
1370 &usbvision_video_template,
1372 if (usbvision->vdev == NULL)
1374 if (video_register_device(usbvision->vdev, VFL_TYPE_GRABBER, video_nr) < 0)
1376 printk(KERN_INFO "USBVision[%d]: registered USBVision Video device %s [v4l2]\n",
1377 usbvision->nr, video_device_node_name(usbvision->vdev));
1380 if (usbvision_device_data[usbvision->dev_model].radio) {
1381 /* usbvision has radio */
1382 usbvision->rdev = usbvision_vdev_init(usbvision,
1383 &usbvision_radio_template,
1385 if (usbvision->rdev == NULL)
1387 if (video_register_device(usbvision->rdev, VFL_TYPE_RADIO, radio_nr) < 0)
1389 printk(KERN_INFO "USBVision[%d]: registered USBVision Radio device %s [v4l2]\n",
1390 usbvision->nr, video_device_node_name(usbvision->rdev));
1396 dev_err(&usbvision->dev->dev,
1397 "USBVision[%d]: video_register_device() failed\n",
1399 usbvision_unregister_video(usbvision);
1406 * This code allocates the struct usb_usbvision.
1407 * It is filled with default values.
1409 * Returns NULL on error, a pointer to usb_usbvision else.
1412 static struct usb_usbvision *usbvision_alloc(struct usb_device *dev,
1413 struct usb_interface *intf)
1415 struct usb_usbvision *usbvision;
1417 usbvision = kzalloc(sizeof(struct usb_usbvision), GFP_KERNEL);
1418 if (usbvision == NULL)
1421 usbvision->dev = dev;
1422 if (v4l2_device_register(&intf->dev, &usbvision->v4l2_dev))
1425 mutex_init(&usbvision->v4l2_lock);
1427 /* prepare control urb for control messages during interrupts */
1428 usbvision->ctrl_urb = usb_alloc_urb(USBVISION_URB_FRAMES, GFP_KERNEL);
1429 if (usbvision->ctrl_urb == NULL)
1431 init_waitqueue_head(&usbvision->ctrl_urb_wq);
1433 usbvision_init_power_off_timer(usbvision);
1438 v4l2_device_unregister(&usbvision->v4l2_dev);
1445 * usbvision_release()
1447 * This code does final release of struct usb_usbvision. This happens
1448 * after the device is disconnected -and- all clients closed their files.
1451 static void usbvision_release(struct usb_usbvision *usbvision)
1453 PDEBUG(DBG_PROBE, "");
1455 usbvision_reset_power_off_timer(usbvision);
1457 usbvision->initialized = 0;
1459 usbvision_remove_sysfs(usbvision->vdev);
1460 usbvision_unregister_video(usbvision);
1462 usb_free_urb(usbvision->ctrl_urb);
1464 v4l2_device_unregister(&usbvision->v4l2_dev);
1467 PDEBUG(DBG_PROBE, "success");
1471 /*********************** usb interface **********************************/
1473 static void usbvision_configure_video(struct usb_usbvision *usbvision)
1477 if (usbvision == NULL)
1480 model = usbvision->dev_model;
1481 usbvision->palette = usbvision_v4l2_format[2]; /* V4L2_PIX_FMT_RGB24; */
1483 if (usbvision_device_data[usbvision->dev_model].vin_reg2_override) {
1484 usbvision->vin_reg2_preset =
1485 usbvision_device_data[usbvision->dev_model].vin_reg2;
1487 usbvision->vin_reg2_preset = 0;
1490 usbvision->tvnorm_id = usbvision_device_data[model].video_norm;
1492 usbvision->video_inputs = usbvision_device_data[model].video_channels;
1493 usbvision->ctl_input = 0;
1495 /* This should be here to make i2c clients to be able to register */
1496 /* first switch off audio */
1497 if (usbvision_device_data[model].audio_channels > 0)
1498 usbvision_audio_off(usbvision);
1499 if (!power_on_at_open) {
1500 /* and then power up the noisy tuner */
1501 usbvision_power_on(usbvision);
1502 usbvision_i2c_register(usbvision);
1509 * This procedure queries device descriptor and accepts the interface
1510 * if it looks like USBVISION video device
1513 static int __devinit usbvision_probe(struct usb_interface *intf,
1514 const struct usb_device_id *devid)
1516 struct usb_device *dev = usb_get_dev(interface_to_usbdev(intf));
1517 struct usb_interface *uif;
1518 __u8 ifnum = intf->altsetting->desc.bInterfaceNumber;
1519 const struct usb_host_interface *interface;
1520 struct usb_usbvision *usbvision = NULL;
1521 const struct usb_endpoint_descriptor *endpoint;
1524 PDEBUG(DBG_PROBE, "VID=%#04x, PID=%#04x, ifnum=%u",
1525 dev->descriptor.idVendor,
1526 dev->descriptor.idProduct, ifnum);
1528 model = devid->driver_info;
1529 if (model < 0 || model >= usbvision_device_data_size) {
1530 PDEBUG(DBG_PROBE, "model out of bounds %d", model);
1533 printk(KERN_INFO "%s: %s found\n", __func__,
1534 usbvision_device_data[model].model_string);
1536 if (usbvision_device_data[model].interface >= 0)
1537 interface = &dev->actconfig->interface[usbvision_device_data[model].interface]->altsetting[0];
1539 interface = &dev->actconfig->interface[ifnum]->altsetting[0];
1540 endpoint = &interface->endpoint[1].desc;
1541 if (!usb_endpoint_xfer_isoc(endpoint)) {
1542 dev_err(&intf->dev, "%s: interface %d. has non-ISO endpoint!\n",
1544 dev_err(&intf->dev, "%s: Endpoint attributes %d",
1545 __func__, endpoint->bmAttributes);
1548 if (usb_endpoint_dir_out(endpoint)) {
1549 dev_err(&intf->dev, "%s: interface %d. has ISO OUT endpoint!\n",
1554 usbvision = usbvision_alloc(dev, intf);
1555 if (usbvision == NULL) {
1556 dev_err(&intf->dev, "%s: couldn't allocate USBVision struct\n", __func__);
1560 if (dev->descriptor.bNumConfigurations > 1)
1561 usbvision->bridge_type = BRIDGE_NT1004;
1562 else if (model == DAZZLE_DVC_90_REV_1_SECAM)
1563 usbvision->bridge_type = BRIDGE_NT1005;
1565 usbvision->bridge_type = BRIDGE_NT1003;
1566 PDEBUG(DBG_PROBE, "bridge_type %d", usbvision->bridge_type);
1568 /* compute alternate max packet sizes */
1569 uif = dev->actconfig->interface[0];
1571 usbvision->num_alt = uif->num_altsetting;
1572 PDEBUG(DBG_PROBE, "Alternate settings: %i", usbvision->num_alt);
1573 usbvision->alt_max_pkt_size = kmalloc(32 * usbvision->num_alt, GFP_KERNEL);
1574 if (usbvision->alt_max_pkt_size == NULL) {
1575 dev_err(&intf->dev, "usbvision: out of memory!\n");
1579 for (i = 0; i < usbvision->num_alt; i++) {
1580 u16 tmp = le16_to_cpu(uif->altsetting[i].endpoint[1].desc.
1582 usbvision->alt_max_pkt_size[i] =
1583 (tmp & 0x07ff) * (((tmp & 0x1800) >> 11) + 1);
1584 PDEBUG(DBG_PROBE, "Alternate setting %i, max size= %i", i,
1585 usbvision->alt_max_pkt_size[i]);
1589 usbvision->nr = usbvision_nr++;
1591 usbvision->have_tuner = usbvision_device_data[model].tuner;
1592 if (usbvision->have_tuner)
1593 usbvision->tuner_type = usbvision_device_data[model].tuner_type;
1595 usbvision->dev_model = model;
1596 usbvision->remove_pending = 0;
1597 usbvision->iface = ifnum;
1598 usbvision->iface_alt = 0;
1599 usbvision->video_endp = endpoint->bEndpointAddress;
1600 usbvision->isoc_packet_size = 0;
1601 usbvision->usb_bandwidth = 0;
1602 usbvision->user = 0;
1603 usbvision->streaming = stream_off;
1604 usbvision_configure_video(usbvision);
1605 usbvision_register_video(usbvision);
1607 usbvision_create_sysfs(usbvision->vdev);
1609 PDEBUG(DBG_PROBE, "success");
1615 * usbvision_disconnect()
1617 * This procedure stops all driver activity, deallocates interface-private
1618 * structure (pointed by 'ptr') and after that driver should be removable
1619 * with no ill consequences.
1622 static void __devexit usbvision_disconnect(struct usb_interface *intf)
1624 struct usb_usbvision *usbvision = to_usbvision(usb_get_intfdata(intf));
1626 PDEBUG(DBG_PROBE, "");
1628 if (usbvision == NULL) {
1629 pr_err("%s: usb_get_intfdata() failed\n", __func__);
1633 mutex_lock(&usbvision->v4l2_lock);
1635 /* At this time we ask to cancel outstanding URBs */
1636 usbvision_stop_isoc(usbvision);
1638 v4l2_device_disconnect(&usbvision->v4l2_dev);
1640 if (usbvision->power) {
1641 usbvision_i2c_unregister(usbvision);
1642 usbvision_power_off(usbvision);
1644 usbvision->remove_pending = 1; /* Now all ISO data will be ignored */
1646 usb_put_dev(usbvision->dev);
1647 usbvision->dev = NULL; /* USB device is no more */
1649 mutex_unlock(&usbvision->v4l2_lock);
1651 if (usbvision->user) {
1652 printk(KERN_INFO "%s: In use, disconnect pending\n",
1654 wake_up_interruptible(&usbvision->wait_frame);
1655 wake_up_interruptible(&usbvision->wait_stream);
1657 usbvision_release(usbvision);
1660 PDEBUG(DBG_PROBE, "success");
1663 static struct usb_driver usbvision_driver = {
1664 .name = "usbvision",
1665 .id_table = usbvision_table,
1666 .probe = usbvision_probe,
1667 .disconnect = __devexit_p(usbvision_disconnect),
1673 * This code is run to initialize the driver.
1676 static int __init usbvision_init(void)
1680 PDEBUG(DBG_PROBE, "");
1682 PDEBUG(DBG_IO, "IO debugging is enabled [video]");
1683 PDEBUG(DBG_PROBE, "PROBE debugging is enabled [video]");
1684 PDEBUG(DBG_MMAP, "MMAP debugging is enabled [video]");
1686 /* disable planar mode support unless compression enabled */
1687 if (isoc_mode != ISOC_MODE_COMPRESS) {
1688 /* FIXME : not the right way to set supported flag */
1689 usbvision_v4l2_format[6].supported = 0; /* V4L2_PIX_FMT_YVU420 */
1690 usbvision_v4l2_format[7].supported = 0; /* V4L2_PIX_FMT_YUV422P */
1693 err_code = usb_register(&usbvision_driver);
1695 if (err_code == 0) {
1696 printk(KERN_INFO DRIVER_DESC " : " USBVISION_VERSION_STRING "\n");
1697 PDEBUG(DBG_PROBE, "success");
1702 static void __exit usbvision_exit(void)
1704 PDEBUG(DBG_PROBE, "");
1706 usb_deregister(&usbvision_driver);
1707 PDEBUG(DBG_PROBE, "success");
1710 module_init(usbvision_init);
1711 module_exit(usbvision_exit);
1714 * Overrides for Emacs so that we follow Linus's tabbing style.
1715 * ---------------------------------------------------------------------------