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 * ---------------------------------------------------------------------------