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
);
451 mutex_unlock(&usbvision
->v4l2_lock
);
453 PDEBUG(DBG_IO
, "success");
461 * This is part of Video 4 Linux API. The procedure handles ioctl() calls.
464 #ifdef CONFIG_VIDEO_ADV_DEBUG
465 static int vidioc_g_register(struct file
*file
, void *priv
,
466 struct v4l2_dbg_register
*reg
)
468 struct usb_usbvision
*usbvision
= video_drvdata(file
);
471 /* NT100x has a 8-bit register space */
472 err_code
= usbvision_read_reg(usbvision
, reg
->reg
&0xff);
474 dev_err(&usbvision
->vdev
->dev
,
475 "%s: VIDIOC_DBG_G_REGISTER failed: error %d\n",
484 static int vidioc_s_register(struct file
*file
, void *priv
,
485 const struct v4l2_dbg_register
*reg
)
487 struct usb_usbvision
*usbvision
= video_drvdata(file
);
490 /* NT100x has a 8-bit register space */
491 err_code
= usbvision_write_reg(usbvision
, reg
->reg
& 0xff, reg
->val
);
493 dev_err(&usbvision
->vdev
->dev
,
494 "%s: VIDIOC_DBG_S_REGISTER failed: error %d\n",
502 static int vidioc_querycap(struct file
*file
, void *priv
,
503 struct v4l2_capability
*vc
)
505 struct usb_usbvision
*usbvision
= video_drvdata(file
);
507 strlcpy(vc
->driver
, "USBVision", sizeof(vc
->driver
));
509 usbvision_device_data
[usbvision
->dev_model
].model_string
,
511 usb_make_path(usbvision
->dev
, vc
->bus_info
, sizeof(vc
->bus_info
));
512 vc
->device_caps
= V4L2_CAP_VIDEO_CAPTURE
|
516 (usbvision
->have_tuner
? V4L2_CAP_TUNER
: 0);
517 vc
->capabilities
= vc
->device_caps
| V4L2_CAP_DEVICE_CAPS
;
521 static int vidioc_enum_input(struct file
*file
, void *priv
,
522 struct v4l2_input
*vi
)
524 struct usb_usbvision
*usbvision
= video_drvdata(file
);
527 if (vi
->index
>= usbvision
->video_inputs
)
529 if (usbvision
->have_tuner
)
532 chan
= vi
->index
+ 1; /* skip Television string*/
534 /* Determine the requested input characteristics
535 specific for each usbvision card model */
538 if (usbvision_device_data
[usbvision
->dev_model
].video_channels
== 4) {
539 strcpy(vi
->name
, "White Video Input");
541 strcpy(vi
->name
, "Television");
542 vi
->type
= V4L2_INPUT_TYPE_TUNER
;
545 vi
->std
= USBVISION_NORMS
;
549 vi
->type
= V4L2_INPUT_TYPE_CAMERA
;
550 if (usbvision_device_data
[usbvision
->dev_model
].video_channels
== 4)
551 strcpy(vi
->name
, "Green Video Input");
553 strcpy(vi
->name
, "Composite Video Input");
554 vi
->std
= V4L2_STD_PAL
;
557 vi
->type
= V4L2_INPUT_TYPE_CAMERA
;
558 if (usbvision_device_data
[usbvision
->dev_model
].video_channels
== 4)
559 strcpy(vi
->name
, "Yellow Video Input");
561 strcpy(vi
->name
, "S-Video Input");
562 vi
->std
= V4L2_STD_PAL
;
565 vi
->type
= V4L2_INPUT_TYPE_CAMERA
;
566 strcpy(vi
->name
, "Red Video Input");
567 vi
->std
= V4L2_STD_PAL
;
573 static int vidioc_g_input(struct file
*file
, void *priv
, unsigned int *input
)
575 struct usb_usbvision
*usbvision
= video_drvdata(file
);
577 *input
= usbvision
->ctl_input
;
581 static int vidioc_s_input(struct file
*file
, void *priv
, unsigned int input
)
583 struct usb_usbvision
*usbvision
= video_drvdata(file
);
585 if (input
>= usbvision
->video_inputs
)
588 usbvision_muxsel(usbvision
, input
);
589 usbvision_set_input(usbvision
);
590 usbvision_set_output(usbvision
,
592 usbvision
->curheight
);
596 static int vidioc_s_std(struct file
*file
, void *priv
, v4l2_std_id id
)
598 struct usb_usbvision
*usbvision
= video_drvdata(file
);
600 usbvision
->tvnorm_id
= id
;
602 call_all(usbvision
, video
, s_std
, usbvision
->tvnorm_id
);
603 /* propagate the change to the decoder */
604 usbvision_muxsel(usbvision
, usbvision
->ctl_input
);
609 static int vidioc_g_std(struct file
*file
, void *priv
, v4l2_std_id
*id
)
611 struct usb_usbvision
*usbvision
= video_drvdata(file
);
613 *id
= usbvision
->tvnorm_id
;
617 static int vidioc_g_tuner(struct file
*file
, void *priv
,
618 struct v4l2_tuner
*vt
)
620 struct usb_usbvision
*usbvision
= video_drvdata(file
);
622 if (!usbvision
->have_tuner
|| vt
->index
) /* Only tuner 0 */
624 if (usbvision
->radio
) {
625 strcpy(vt
->name
, "Radio");
626 vt
->type
= V4L2_TUNER_RADIO
;
628 strcpy(vt
->name
, "Television");
630 /* Let clients fill in the remainder of this struct */
631 call_all(usbvision
, tuner
, g_tuner
, vt
);
636 static int vidioc_s_tuner(struct file
*file
, void *priv
,
637 const struct v4l2_tuner
*vt
)
639 struct usb_usbvision
*usbvision
= video_drvdata(file
);
641 /* Only no or one tuner for now */
642 if (!usbvision
->have_tuner
|| vt
->index
)
644 /* let clients handle this */
645 call_all(usbvision
, tuner
, s_tuner
, vt
);
650 static int vidioc_g_frequency(struct file
*file
, void *priv
,
651 struct v4l2_frequency
*freq
)
653 struct usb_usbvision
*usbvision
= video_drvdata(file
);
655 freq
->tuner
= 0; /* Only one tuner */
656 if (usbvision
->radio
)
657 freq
->type
= V4L2_TUNER_RADIO
;
659 freq
->type
= V4L2_TUNER_ANALOG_TV
;
660 freq
->frequency
= usbvision
->freq
;
665 static int vidioc_s_frequency(struct file
*file
, void *priv
,
666 const struct v4l2_frequency
*freq
)
668 struct usb_usbvision
*usbvision
= video_drvdata(file
);
670 /* Only no or one tuner for now */
671 if (!usbvision
->have_tuner
|| freq
->tuner
)
674 usbvision
->freq
= freq
->frequency
;
675 call_all(usbvision
, tuner
, s_frequency
, freq
);
680 static int vidioc_g_audio(struct file
*file
, void *priv
, struct v4l2_audio
*a
)
682 struct usb_usbvision
*usbvision
= video_drvdata(file
);
684 if (usbvision
->radio
)
685 strcpy(a
->name
, "Radio");
687 strcpy(a
->name
, "TV");
692 static int vidioc_s_audio(struct file
*file
, void *fh
,
693 const struct v4l2_audio
*a
)
700 static int vidioc_queryctrl(struct file
*file
, void *priv
,
701 struct v4l2_queryctrl
*ctrl
)
703 struct usb_usbvision
*usbvision
= video_drvdata(file
);
705 call_all(usbvision
, core
, queryctrl
, ctrl
);
713 static int vidioc_g_ctrl(struct file
*file
, void *priv
,
714 struct v4l2_control
*ctrl
)
716 struct usb_usbvision
*usbvision
= video_drvdata(file
);
718 call_all(usbvision
, core
, g_ctrl
, ctrl
);
722 static int vidioc_s_ctrl(struct file
*file
, void *priv
,
723 struct v4l2_control
*ctrl
)
725 struct usb_usbvision
*usbvision
= video_drvdata(file
);
727 call_all(usbvision
, core
, s_ctrl
, ctrl
);
731 static int vidioc_reqbufs(struct file
*file
,
732 void *priv
, struct v4l2_requestbuffers
*vr
)
734 struct usb_usbvision
*usbvision
= video_drvdata(file
);
737 RESTRICT_TO_RANGE(vr
->count
, 1, USBVISION_NUMFRAMES
);
739 /* Check input validity:
740 the user must do a VIDEO CAPTURE and MMAP method. */
741 if (vr
->memory
!= V4L2_MEMORY_MMAP
)
744 if (usbvision
->streaming
== stream_on
) {
745 ret
= usbvision_stream_interrupt(usbvision
);
750 usbvision_frames_free(usbvision
);
751 usbvision_empty_framequeues(usbvision
);
752 vr
->count
= usbvision_frames_alloc(usbvision
, vr
->count
);
754 usbvision
->cur_frame
= NULL
;
759 static int vidioc_querybuf(struct file
*file
,
760 void *priv
, struct v4l2_buffer
*vb
)
762 struct usb_usbvision
*usbvision
= video_drvdata(file
);
763 struct usbvision_frame
*frame
;
765 /* FIXME : must control
766 that buffers are mapped (VIDIOC_REQBUFS has been called) */
767 if (vb
->index
>= usbvision
->num_frames
)
769 /* Updating the corresponding frame state */
770 vb
->flags
= V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC
;
771 frame
= &usbvision
->frame
[vb
->index
];
772 if (frame
->grabstate
>= frame_state_ready
)
773 vb
->flags
|= V4L2_BUF_FLAG_QUEUED
;
774 if (frame
->grabstate
>= frame_state_done
)
775 vb
->flags
|= V4L2_BUF_FLAG_DONE
;
776 if (frame
->grabstate
== frame_state_unused
)
777 vb
->flags
|= V4L2_BUF_FLAG_MAPPED
;
778 vb
->memory
= V4L2_MEMORY_MMAP
;
780 vb
->m
.offset
= vb
->index
* PAGE_ALIGN(usbvision
->max_frame_size
);
782 vb
->memory
= V4L2_MEMORY_MMAP
;
783 vb
->field
= V4L2_FIELD_NONE
;
784 vb
->length
= usbvision
->curwidth
*
785 usbvision
->curheight
*
786 usbvision
->palette
.bytes_per_pixel
;
787 vb
->timestamp
= usbvision
->frame
[vb
->index
].timestamp
;
788 vb
->sequence
= usbvision
->frame
[vb
->index
].sequence
;
792 static int vidioc_qbuf(struct file
*file
, void *priv
, struct v4l2_buffer
*vb
)
794 struct usb_usbvision
*usbvision
= video_drvdata(file
);
795 struct usbvision_frame
*frame
;
796 unsigned long lock_flags
;
798 /* FIXME : works only on VIDEO_CAPTURE MODE, MMAP. */
799 if (vb
->index
>= usbvision
->num_frames
)
802 frame
= &usbvision
->frame
[vb
->index
];
804 if (frame
->grabstate
!= frame_state_unused
)
807 /* Mark it as ready and enqueue frame */
808 frame
->grabstate
= frame_state_ready
;
809 frame
->scanstate
= scan_state_scanning
;
810 frame
->scanlength
= 0; /* Accumulated in usbvision_parse_data() */
812 vb
->flags
&= ~V4L2_BUF_FLAG_DONE
;
814 /* set v4l2_format index */
815 frame
->v4l2_format
= usbvision
->palette
;
817 spin_lock_irqsave(&usbvision
->queue_lock
, lock_flags
);
818 list_add_tail(&usbvision
->frame
[vb
->index
].frame
, &usbvision
->inqueue
);
819 spin_unlock_irqrestore(&usbvision
->queue_lock
, lock_flags
);
824 static int vidioc_dqbuf(struct file
*file
, void *priv
, struct v4l2_buffer
*vb
)
826 struct usb_usbvision
*usbvision
= video_drvdata(file
);
828 struct usbvision_frame
*f
;
829 unsigned long lock_flags
;
831 if (list_empty(&(usbvision
->outqueue
))) {
832 if (usbvision
->streaming
== stream_idle
)
834 ret
= wait_event_interruptible
835 (usbvision
->wait_frame
,
836 !list_empty(&(usbvision
->outqueue
)));
841 spin_lock_irqsave(&usbvision
->queue_lock
, lock_flags
);
842 f
= list_entry(usbvision
->outqueue
.next
,
843 struct usbvision_frame
, frame
);
844 list_del(usbvision
->outqueue
.next
);
845 spin_unlock_irqrestore(&usbvision
->queue_lock
, lock_flags
);
847 f
->grabstate
= frame_state_unused
;
849 vb
->memory
= V4L2_MEMORY_MMAP
;
850 vb
->flags
= V4L2_BUF_FLAG_MAPPED
|
851 V4L2_BUF_FLAG_QUEUED
|
853 V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC
;
854 vb
->index
= f
->index
;
855 vb
->sequence
= f
->sequence
;
856 vb
->timestamp
= f
->timestamp
;
857 vb
->field
= V4L2_FIELD_NONE
;
858 vb
->bytesused
= f
->scanlength
;
863 static int vidioc_streamon(struct file
*file
, void *priv
, enum v4l2_buf_type i
)
865 struct usb_usbvision
*usbvision
= video_drvdata(file
);
867 usbvision
->streaming
= stream_on
;
868 call_all(usbvision
, video
, s_stream
, 1);
873 static int vidioc_streamoff(struct file
*file
,
874 void *priv
, enum v4l2_buf_type type
)
876 struct usb_usbvision
*usbvision
= video_drvdata(file
);
878 if (type
!= V4L2_BUF_TYPE_VIDEO_CAPTURE
)
881 if (usbvision
->streaming
== stream_on
) {
882 usbvision_stream_interrupt(usbvision
);
883 /* Stop all video streamings */
884 call_all(usbvision
, video
, s_stream
, 0);
886 usbvision_empty_framequeues(usbvision
);
891 static int vidioc_enum_fmt_vid_cap(struct file
*file
, void *priv
,
892 struct v4l2_fmtdesc
*vfd
)
894 if (vfd
->index
>= USBVISION_SUPPORTED_PALETTES
- 1)
896 strcpy(vfd
->description
, usbvision_v4l2_format
[vfd
->index
].desc
);
897 vfd
->pixelformat
= usbvision_v4l2_format
[vfd
->index
].format
;
901 static int vidioc_g_fmt_vid_cap(struct file
*file
, void *priv
,
902 struct v4l2_format
*vf
)
904 struct usb_usbvision
*usbvision
= video_drvdata(file
);
905 vf
->fmt
.pix
.width
= usbvision
->curwidth
;
906 vf
->fmt
.pix
.height
= usbvision
->curheight
;
907 vf
->fmt
.pix
.pixelformat
= usbvision
->palette
.format
;
908 vf
->fmt
.pix
.bytesperline
=
909 usbvision
->curwidth
* usbvision
->palette
.bytes_per_pixel
;
910 vf
->fmt
.pix
.sizeimage
= vf
->fmt
.pix
.bytesperline
* usbvision
->curheight
;
911 vf
->fmt
.pix
.colorspace
= V4L2_COLORSPACE_SMPTE170M
;
912 vf
->fmt
.pix
.field
= V4L2_FIELD_NONE
; /* Always progressive image */
917 static int vidioc_try_fmt_vid_cap(struct file
*file
, void *priv
,
918 struct v4l2_format
*vf
)
920 struct usb_usbvision
*usbvision
= video_drvdata(file
);
923 /* Find requested format in available ones */
924 for (format_idx
= 0; format_idx
< USBVISION_SUPPORTED_PALETTES
; format_idx
++) {
925 if (vf
->fmt
.pix
.pixelformat
==
926 usbvision_v4l2_format
[format_idx
].format
) {
927 usbvision
->palette
= usbvision_v4l2_format
[format_idx
];
932 if (format_idx
== USBVISION_SUPPORTED_PALETTES
)
934 RESTRICT_TO_RANGE(vf
->fmt
.pix
.width
, MIN_FRAME_WIDTH
, MAX_FRAME_WIDTH
);
935 RESTRICT_TO_RANGE(vf
->fmt
.pix
.height
, MIN_FRAME_HEIGHT
, MAX_FRAME_HEIGHT
);
937 vf
->fmt
.pix
.bytesperline
= vf
->fmt
.pix
.width
*
938 usbvision
->palette
.bytes_per_pixel
;
939 vf
->fmt
.pix
.sizeimage
= vf
->fmt
.pix
.bytesperline
*vf
->fmt
.pix
.height
;
944 static int vidioc_s_fmt_vid_cap(struct file
*file
, void *priv
,
945 struct v4l2_format
*vf
)
947 struct usb_usbvision
*usbvision
= video_drvdata(file
);
950 ret
= vidioc_try_fmt_vid_cap(file
, priv
, vf
);
954 /* stop io in case it is already in progress */
955 if (usbvision
->streaming
== stream_on
) {
956 ret
= usbvision_stream_interrupt(usbvision
);
960 usbvision_frames_free(usbvision
);
961 usbvision_empty_framequeues(usbvision
);
963 usbvision
->cur_frame
= NULL
;
965 /* by now we are committed to the new data... */
966 usbvision_set_output(usbvision
, vf
->fmt
.pix
.width
, vf
->fmt
.pix
.height
);
971 static ssize_t
usbvision_read(struct file
*file
, char __user
*buf
,
972 size_t count
, loff_t
*ppos
)
974 struct usb_usbvision
*usbvision
= video_drvdata(file
);
975 int noblock
= file
->f_flags
& O_NONBLOCK
;
976 unsigned long lock_flags
;
978 struct usbvision_frame
*frame
;
980 PDEBUG(DBG_IO
, "%s: %ld bytes, noblock=%d", __func__
,
981 (unsigned long)count
, noblock
);
983 if (!USBVISION_IS_OPERATIONAL(usbvision
) || (buf
== NULL
))
986 /* This entry point is compatible with the mmap routines
987 so that a user can do either VIDIOC_QBUF/VIDIOC_DQBUF
988 to get frames or call read on the device. */
989 if (!usbvision
->num_frames
) {
990 /* First, allocate some frames to work with
991 if this has not been done with VIDIOC_REQBUF */
992 usbvision_frames_free(usbvision
);
993 usbvision_empty_framequeues(usbvision
);
994 usbvision_frames_alloc(usbvision
, USBVISION_NUMFRAMES
);
997 if (usbvision
->streaming
!= stream_on
) {
998 /* no stream is running, make it running ! */
999 usbvision
->streaming
= stream_on
;
1000 call_all(usbvision
, video
, s_stream
, 1);
1003 /* Then, enqueue as many frames as possible
1004 (like a user of VIDIOC_QBUF would do) */
1005 for (i
= 0; i
< usbvision
->num_frames
; i
++) {
1006 frame
= &usbvision
->frame
[i
];
1007 if (frame
->grabstate
== frame_state_unused
) {
1008 /* Mark it as ready and enqueue frame */
1009 frame
->grabstate
= frame_state_ready
;
1010 frame
->scanstate
= scan_state_scanning
;
1011 /* Accumulated in usbvision_parse_data() */
1012 frame
->scanlength
= 0;
1014 /* set v4l2_format index */
1015 frame
->v4l2_format
= usbvision
->palette
;
1017 spin_lock_irqsave(&usbvision
->queue_lock
, lock_flags
);
1018 list_add_tail(&frame
->frame
, &usbvision
->inqueue
);
1019 spin_unlock_irqrestore(&usbvision
->queue_lock
,
1024 /* Then try to steal a frame (like a VIDIOC_DQBUF would do) */
1025 if (list_empty(&(usbvision
->outqueue
))) {
1029 ret
= wait_event_interruptible
1030 (usbvision
->wait_frame
,
1031 !list_empty(&(usbvision
->outqueue
)));
1036 spin_lock_irqsave(&usbvision
->queue_lock
, lock_flags
);
1037 frame
= list_entry(usbvision
->outqueue
.next
,
1038 struct usbvision_frame
, frame
);
1039 list_del(usbvision
->outqueue
.next
);
1040 spin_unlock_irqrestore(&usbvision
->queue_lock
, lock_flags
);
1042 /* An error returns an empty frame */
1043 if (frame
->grabstate
== frame_state_error
) {
1044 frame
->bytes_read
= 0;
1048 PDEBUG(DBG_IO
, "%s: frmx=%d, bytes_read=%ld, scanlength=%ld",
1050 frame
->index
, frame
->bytes_read
, frame
->scanlength
);
1052 /* copy bytes to user space; we allow for partials reads */
1053 if ((count
+ frame
->bytes_read
) > (unsigned long)frame
->scanlength
)
1054 count
= frame
->scanlength
- frame
->bytes_read
;
1056 if (copy_to_user(buf
, frame
->data
+ frame
->bytes_read
, count
))
1059 frame
->bytes_read
+= count
;
1060 PDEBUG(DBG_IO
, "%s: {copy} count used=%ld, new bytes_read=%ld",
1062 (unsigned long)count
, frame
->bytes_read
);
1064 /* For now, forget the frame if it has not been read in one shot. */
1065 /* if (frame->bytes_read >= frame->scanlength) {*/ /* All data has been read */
1066 frame
->bytes_read
= 0;
1068 /* Mark it as available to be used again. */
1069 frame
->grabstate
= frame_state_unused
;
1075 static ssize_t
usbvision_v4l2_read(struct file
*file
, char __user
*buf
,
1076 size_t count
, loff_t
*ppos
)
1078 struct usb_usbvision
*usbvision
= video_drvdata(file
);
1081 if (mutex_lock_interruptible(&usbvision
->v4l2_lock
))
1082 return -ERESTARTSYS
;
1083 res
= usbvision_read(file
, buf
, count
, ppos
);
1084 mutex_unlock(&usbvision
->v4l2_lock
);
1088 static int usbvision_mmap(struct file
*file
, struct vm_area_struct
*vma
)
1090 unsigned long size
= vma
->vm_end
- vma
->vm_start
,
1091 start
= vma
->vm_start
;
1094 struct usb_usbvision
*usbvision
= video_drvdata(file
);
1096 PDEBUG(DBG_MMAP
, "mmap");
1098 if (!USBVISION_IS_OPERATIONAL(usbvision
))
1101 if (!(vma
->vm_flags
& VM_WRITE
) ||
1102 size
!= PAGE_ALIGN(usbvision
->max_frame_size
)) {
1106 for (i
= 0; i
< usbvision
->num_frames
; i
++) {
1107 if (((PAGE_ALIGN(usbvision
->max_frame_size
)*i
) >> PAGE_SHIFT
) ==
1111 if (i
== usbvision
->num_frames
) {
1113 "mmap: user supplied mapping address is out of range");
1117 /* VM_IO is eventually going to replace PageReserved altogether */
1118 vma
->vm_flags
|= VM_IO
| VM_DONTEXPAND
| VM_DONTDUMP
;
1120 pos
= usbvision
->frame
[i
].data
;
1122 if (vm_insert_page(vma
, start
, vmalloc_to_page(pos
))) {
1123 PDEBUG(DBG_MMAP
, "mmap: vm_insert_page failed");
1134 static int usbvision_v4l2_mmap(struct file
*file
, struct vm_area_struct
*vma
)
1136 struct usb_usbvision
*usbvision
= video_drvdata(file
);
1139 if (mutex_lock_interruptible(&usbvision
->v4l2_lock
))
1140 return -ERESTARTSYS
;
1141 res
= usbvision_mmap(file
, vma
);
1142 mutex_unlock(&usbvision
->v4l2_lock
);
1147 * Here comes the stuff for radio on usbvision based devices
1150 static int usbvision_radio_open(struct file
*file
)
1152 struct usb_usbvision
*usbvision
= video_drvdata(file
);
1155 PDEBUG(DBG_IO
, "%s:", __func__
);
1157 if (mutex_lock_interruptible(&usbvision
->v4l2_lock
))
1158 return -ERESTARTSYS
;
1159 if (usbvision
->user
) {
1160 dev_err(&usbvision
->rdev
->dev
,
1161 "%s: Someone tried to open an already opened USBVision Radio!\n",
1165 if (power_on_at_open
) {
1166 usbvision_reset_power_off_timer(usbvision
);
1167 if (usbvision
->power
== 0) {
1168 usbvision_power_on(usbvision
);
1169 usbvision_i2c_register(usbvision
);
1173 /* Alternate interface 1 is is the biggest frame size */
1174 err_code
= usbvision_set_alternate(usbvision
);
1176 usbvision
->last_error
= err_code
;
1181 /* If so far no errors then we shall start the radio */
1182 usbvision
->radio
= 1;
1183 call_all(usbvision
, tuner
, s_radio
);
1184 usbvision_set_audio(usbvision
, USBVISION_AUDIO_RADIO
);
1189 if (power_on_at_open
) {
1190 usbvision_i2c_unregister(usbvision
);
1191 usbvision_power_off(usbvision
);
1192 usbvision
->initialized
= 0;
1196 mutex_unlock(&usbvision
->v4l2_lock
);
1201 static int usbvision_radio_close(struct file
*file
)
1203 struct usb_usbvision
*usbvision
= video_drvdata(file
);
1208 mutex_lock(&usbvision
->v4l2_lock
);
1209 /* Set packet size to 0 */
1210 usbvision
->iface_alt
= 0;
1211 err_code
= usb_set_interface(usbvision
->dev
, usbvision
->iface
,
1212 usbvision
->iface_alt
);
1214 usbvision_audio_off(usbvision
);
1215 usbvision
->radio
= 0;
1218 if (power_on_at_open
) {
1219 usbvision_set_power_off_timer(usbvision
);
1220 usbvision
->initialized
= 0;
1223 if (usbvision
->remove_pending
) {
1224 printk(KERN_INFO
"%s: Final disconnect\n", __func__
);
1225 usbvision_release(usbvision
);
1229 mutex_unlock(&usbvision
->v4l2_lock
);
1230 PDEBUG(DBG_IO
, "success");
1234 /* Video registration stuff */
1236 /* Video template */
1237 static const struct v4l2_file_operations usbvision_fops
= {
1238 .owner
= THIS_MODULE
,
1239 .open
= usbvision_v4l2_open
,
1240 .release
= usbvision_v4l2_close
,
1241 .read
= usbvision_v4l2_read
,
1242 .mmap
= usbvision_v4l2_mmap
,
1243 .unlocked_ioctl
= video_ioctl2
,
1244 /* .poll = video_poll, */
1247 static const struct v4l2_ioctl_ops usbvision_ioctl_ops
= {
1248 .vidioc_querycap
= vidioc_querycap
,
1249 .vidioc_enum_fmt_vid_cap
= vidioc_enum_fmt_vid_cap
,
1250 .vidioc_g_fmt_vid_cap
= vidioc_g_fmt_vid_cap
,
1251 .vidioc_try_fmt_vid_cap
= vidioc_try_fmt_vid_cap
,
1252 .vidioc_s_fmt_vid_cap
= vidioc_s_fmt_vid_cap
,
1253 .vidioc_reqbufs
= vidioc_reqbufs
,
1254 .vidioc_querybuf
= vidioc_querybuf
,
1255 .vidioc_qbuf
= vidioc_qbuf
,
1256 .vidioc_dqbuf
= vidioc_dqbuf
,
1257 .vidioc_s_std
= vidioc_s_std
,
1258 .vidioc_g_std
= vidioc_g_std
,
1259 .vidioc_enum_input
= vidioc_enum_input
,
1260 .vidioc_g_input
= vidioc_g_input
,
1261 .vidioc_s_input
= vidioc_s_input
,
1262 .vidioc_queryctrl
= vidioc_queryctrl
,
1263 .vidioc_g_audio
= vidioc_g_audio
,
1264 .vidioc_s_audio
= vidioc_s_audio
,
1265 .vidioc_g_ctrl
= vidioc_g_ctrl
,
1266 .vidioc_s_ctrl
= vidioc_s_ctrl
,
1267 .vidioc_streamon
= vidioc_streamon
,
1268 .vidioc_streamoff
= vidioc_streamoff
,
1269 .vidioc_g_tuner
= vidioc_g_tuner
,
1270 .vidioc_s_tuner
= vidioc_s_tuner
,
1271 .vidioc_g_frequency
= vidioc_g_frequency
,
1272 .vidioc_s_frequency
= vidioc_s_frequency
,
1273 #ifdef CONFIG_VIDEO_ADV_DEBUG
1274 .vidioc_g_register
= vidioc_g_register
,
1275 .vidioc_s_register
= vidioc_s_register
,
1279 static struct video_device usbvision_video_template
= {
1280 .fops
= &usbvision_fops
,
1281 .ioctl_ops
= &usbvision_ioctl_ops
,
1282 .name
= "usbvision-video",
1283 .release
= video_device_release
,
1284 .tvnorms
= USBVISION_NORMS
,
1288 /* Radio template */
1289 static const struct v4l2_file_operations usbvision_radio_fops
= {
1290 .owner
= THIS_MODULE
,
1291 .open
= usbvision_radio_open
,
1292 .release
= usbvision_radio_close
,
1293 .unlocked_ioctl
= video_ioctl2
,
1296 static const struct v4l2_ioctl_ops usbvision_radio_ioctl_ops
= {
1297 .vidioc_querycap
= vidioc_querycap
,
1298 .vidioc_enum_input
= vidioc_enum_input
,
1299 .vidioc_g_input
= vidioc_g_input
,
1300 .vidioc_s_input
= vidioc_s_input
,
1301 .vidioc_queryctrl
= vidioc_queryctrl
,
1302 .vidioc_g_audio
= vidioc_g_audio
,
1303 .vidioc_s_audio
= vidioc_s_audio
,
1304 .vidioc_g_ctrl
= vidioc_g_ctrl
,
1305 .vidioc_s_ctrl
= vidioc_s_ctrl
,
1306 .vidioc_g_tuner
= vidioc_g_tuner
,
1307 .vidioc_s_tuner
= vidioc_s_tuner
,
1308 .vidioc_g_frequency
= vidioc_g_frequency
,
1309 .vidioc_s_frequency
= vidioc_s_frequency
,
1312 static struct video_device usbvision_radio_template
= {
1313 .fops
= &usbvision_radio_fops
,
1314 .name
= "usbvision-radio",
1315 .release
= video_device_release
,
1316 .ioctl_ops
= &usbvision_radio_ioctl_ops
,
1320 static struct video_device
*usbvision_vdev_init(struct usb_usbvision
*usbvision
,
1321 struct video_device
*vdev_template
,
1324 struct usb_device
*usb_dev
= usbvision
->dev
;
1325 struct video_device
*vdev
;
1327 if (usb_dev
== NULL
) {
1328 dev_err(&usbvision
->dev
->dev
,
1329 "%s: usbvision->dev is not set\n", __func__
);
1333 vdev
= video_device_alloc();
1336 *vdev
= *vdev_template
;
1337 vdev
->lock
= &usbvision
->v4l2_lock
;
1338 vdev
->v4l2_dev
= &usbvision
->v4l2_dev
;
1339 snprintf(vdev
->name
, sizeof(vdev
->name
), "%s", name
);
1340 video_set_drvdata(vdev
, usbvision
);
1344 /* unregister video4linux devices */
1345 static void usbvision_unregister_video(struct usb_usbvision
*usbvision
)
1348 if (usbvision
->rdev
) {
1349 PDEBUG(DBG_PROBE
, "unregister %s [v4l2]",
1350 video_device_node_name(usbvision
->rdev
));
1351 if (video_is_registered(usbvision
->rdev
))
1352 video_unregister_device(usbvision
->rdev
);
1354 video_device_release(usbvision
->rdev
);
1355 usbvision
->rdev
= NULL
;
1359 if (usbvision
->vdev
) {
1360 PDEBUG(DBG_PROBE
, "unregister %s [v4l2]",
1361 video_device_node_name(usbvision
->vdev
));
1362 if (video_is_registered(usbvision
->vdev
))
1363 video_unregister_device(usbvision
->vdev
);
1365 video_device_release(usbvision
->vdev
);
1366 usbvision
->vdev
= NULL
;
1370 /* register video4linux devices */
1371 static int usbvision_register_video(struct usb_usbvision
*usbvision
)
1374 usbvision
->vdev
= usbvision_vdev_init(usbvision
,
1375 &usbvision_video_template
,
1377 if (usbvision
->vdev
== NULL
)
1379 if (video_register_device(usbvision
->vdev
, VFL_TYPE_GRABBER
, video_nr
) < 0)
1381 printk(KERN_INFO
"USBVision[%d]: registered USBVision Video device %s [v4l2]\n",
1382 usbvision
->nr
, video_device_node_name(usbvision
->vdev
));
1385 if (usbvision_device_data
[usbvision
->dev_model
].radio
) {
1386 /* usbvision has radio */
1387 usbvision
->rdev
= usbvision_vdev_init(usbvision
,
1388 &usbvision_radio_template
,
1390 if (usbvision
->rdev
== NULL
)
1392 if (video_register_device(usbvision
->rdev
, VFL_TYPE_RADIO
, radio_nr
) < 0)
1394 printk(KERN_INFO
"USBVision[%d]: registered USBVision Radio device %s [v4l2]\n",
1395 usbvision
->nr
, video_device_node_name(usbvision
->rdev
));
1401 dev_err(&usbvision
->dev
->dev
,
1402 "USBVision[%d]: video_register_device() failed\n",
1404 usbvision_unregister_video(usbvision
);
1411 * This code allocates the struct usb_usbvision.
1412 * It is filled with default values.
1414 * Returns NULL on error, a pointer to usb_usbvision else.
1417 static struct usb_usbvision
*usbvision_alloc(struct usb_device
*dev
,
1418 struct usb_interface
*intf
)
1420 struct usb_usbvision
*usbvision
;
1422 usbvision
= kzalloc(sizeof(struct usb_usbvision
), GFP_KERNEL
);
1423 if (usbvision
== NULL
)
1426 usbvision
->dev
= dev
;
1427 if (v4l2_device_register(&intf
->dev
, &usbvision
->v4l2_dev
))
1430 mutex_init(&usbvision
->v4l2_lock
);
1432 /* prepare control urb for control messages during interrupts */
1433 usbvision
->ctrl_urb
= usb_alloc_urb(USBVISION_URB_FRAMES
, GFP_KERNEL
);
1434 if (usbvision
->ctrl_urb
== NULL
)
1436 init_waitqueue_head(&usbvision
->ctrl_urb_wq
);
1438 usbvision_init_power_off_timer(usbvision
);
1443 v4l2_device_unregister(&usbvision
->v4l2_dev
);
1450 * usbvision_release()
1452 * This code does final release of struct usb_usbvision. This happens
1453 * after the device is disconnected -and- all clients closed their files.
1456 static void usbvision_release(struct usb_usbvision
*usbvision
)
1458 PDEBUG(DBG_PROBE
, "");
1460 usbvision_reset_power_off_timer(usbvision
);
1462 usbvision
->initialized
= 0;
1464 usbvision_remove_sysfs(usbvision
->vdev
);
1465 usbvision_unregister_video(usbvision
);
1466 kfree(usbvision
->alt_max_pkt_size
);
1468 usb_free_urb(usbvision
->ctrl_urb
);
1470 v4l2_device_unregister(&usbvision
->v4l2_dev
);
1473 PDEBUG(DBG_PROBE
, "success");
1477 /*********************** usb interface **********************************/
1479 static void usbvision_configure_video(struct usb_usbvision
*usbvision
)
1483 if (usbvision
== NULL
)
1486 model
= usbvision
->dev_model
;
1487 usbvision
->palette
= usbvision_v4l2_format
[2]; /* V4L2_PIX_FMT_RGB24; */
1489 if (usbvision_device_data
[usbvision
->dev_model
].vin_reg2_override
) {
1490 usbvision
->vin_reg2_preset
=
1491 usbvision_device_data
[usbvision
->dev_model
].vin_reg2
;
1493 usbvision
->vin_reg2_preset
= 0;
1496 usbvision
->tvnorm_id
= usbvision_device_data
[model
].video_norm
;
1498 usbvision
->video_inputs
= usbvision_device_data
[model
].video_channels
;
1499 usbvision
->ctl_input
= 0;
1501 /* This should be here to make i2c clients to be able to register */
1502 /* first switch off audio */
1503 if (usbvision_device_data
[model
].audio_channels
> 0)
1504 usbvision_audio_off(usbvision
);
1505 if (!power_on_at_open
) {
1506 /* and then power up the noisy tuner */
1507 usbvision_power_on(usbvision
);
1508 usbvision_i2c_register(usbvision
);
1515 * This procedure queries device descriptor and accepts the interface
1516 * if it looks like USBVISION video device
1519 static int usbvision_probe(struct usb_interface
*intf
,
1520 const struct usb_device_id
*devid
)
1522 struct usb_device
*dev
= usb_get_dev(interface_to_usbdev(intf
));
1523 struct usb_interface
*uif
;
1524 __u8 ifnum
= intf
->altsetting
->desc
.bInterfaceNumber
;
1525 const struct usb_host_interface
*interface
;
1526 struct usb_usbvision
*usbvision
= NULL
;
1527 const struct usb_endpoint_descriptor
*endpoint
;
1530 PDEBUG(DBG_PROBE
, "VID=%#04x, PID=%#04x, ifnum=%u",
1531 dev
->descriptor
.idVendor
,
1532 dev
->descriptor
.idProduct
, ifnum
);
1534 model
= devid
->driver_info
;
1535 if (model
< 0 || model
>= usbvision_device_data_size
) {
1536 PDEBUG(DBG_PROBE
, "model out of bounds %d", model
);
1539 printk(KERN_INFO
"%s: %s found\n", __func__
,
1540 usbvision_device_data
[model
].model_string
);
1542 if (usbvision_device_data
[model
].interface
>= 0)
1543 interface
= &dev
->actconfig
->interface
[usbvision_device_data
[model
].interface
]->altsetting
[0];
1545 interface
= &dev
->actconfig
->interface
[ifnum
]->altsetting
[0];
1546 endpoint
= &interface
->endpoint
[1].desc
;
1547 if (!usb_endpoint_xfer_isoc(endpoint
)) {
1548 dev_err(&intf
->dev
, "%s: interface %d. has non-ISO endpoint!\n",
1550 dev_err(&intf
->dev
, "%s: Endpoint attributes %d",
1551 __func__
, endpoint
->bmAttributes
);
1554 if (usb_endpoint_dir_out(endpoint
)) {
1555 dev_err(&intf
->dev
, "%s: interface %d. has ISO OUT endpoint!\n",
1560 usbvision
= usbvision_alloc(dev
, intf
);
1561 if (usbvision
== NULL
) {
1562 dev_err(&intf
->dev
, "%s: couldn't allocate USBVision struct\n", __func__
);
1566 if (dev
->descriptor
.bNumConfigurations
> 1)
1567 usbvision
->bridge_type
= BRIDGE_NT1004
;
1568 else if (model
== DAZZLE_DVC_90_REV_1_SECAM
)
1569 usbvision
->bridge_type
= BRIDGE_NT1005
;
1571 usbvision
->bridge_type
= BRIDGE_NT1003
;
1572 PDEBUG(DBG_PROBE
, "bridge_type %d", usbvision
->bridge_type
);
1574 /* compute alternate max packet sizes */
1575 uif
= dev
->actconfig
->interface
[0];
1577 usbvision
->num_alt
= uif
->num_altsetting
;
1578 PDEBUG(DBG_PROBE
, "Alternate settings: %i", usbvision
->num_alt
);
1579 usbvision
->alt_max_pkt_size
= kmalloc(32 * usbvision
->num_alt
, GFP_KERNEL
);
1580 if (usbvision
->alt_max_pkt_size
== NULL
) {
1581 dev_err(&intf
->dev
, "usbvision: out of memory!\n");
1582 usbvision_release(usbvision
);
1586 for (i
= 0; i
< usbvision
->num_alt
; i
++) {
1587 u16 tmp
= le16_to_cpu(uif
->altsetting
[i
].endpoint
[1].desc
.
1589 usbvision
->alt_max_pkt_size
[i
] =
1590 (tmp
& 0x07ff) * (((tmp
& 0x1800) >> 11) + 1);
1591 PDEBUG(DBG_PROBE
, "Alternate setting %i, max size= %i", i
,
1592 usbvision
->alt_max_pkt_size
[i
]);
1596 usbvision
->nr
= usbvision_nr
++;
1598 usbvision
->have_tuner
= usbvision_device_data
[model
].tuner
;
1599 if (usbvision
->have_tuner
)
1600 usbvision
->tuner_type
= usbvision_device_data
[model
].tuner_type
;
1602 usbvision
->dev_model
= model
;
1603 usbvision
->remove_pending
= 0;
1604 usbvision
->iface
= ifnum
;
1605 usbvision
->iface_alt
= 0;
1606 usbvision
->video_endp
= endpoint
->bEndpointAddress
;
1607 usbvision
->isoc_packet_size
= 0;
1608 usbvision
->usb_bandwidth
= 0;
1609 usbvision
->user
= 0;
1610 usbvision
->streaming
= stream_off
;
1611 usbvision_configure_video(usbvision
);
1612 usbvision_register_video(usbvision
);
1614 usbvision_create_sysfs(usbvision
->vdev
);
1616 PDEBUG(DBG_PROBE
, "success");
1622 * usbvision_disconnect()
1624 * This procedure stops all driver activity, deallocates interface-private
1625 * structure (pointed by 'ptr') and after that driver should be removable
1626 * with no ill consequences.
1629 static void usbvision_disconnect(struct usb_interface
*intf
)
1631 struct usb_usbvision
*usbvision
= to_usbvision(usb_get_intfdata(intf
));
1633 PDEBUG(DBG_PROBE
, "");
1635 if (usbvision
== NULL
) {
1636 pr_err("%s: usb_get_intfdata() failed\n", __func__
);
1640 mutex_lock(&usbvision
->v4l2_lock
);
1642 /* At this time we ask to cancel outstanding URBs */
1643 usbvision_stop_isoc(usbvision
);
1645 v4l2_device_disconnect(&usbvision
->v4l2_dev
);
1647 if (usbvision
->power
) {
1648 usbvision_i2c_unregister(usbvision
);
1649 usbvision_power_off(usbvision
);
1651 usbvision
->remove_pending
= 1; /* Now all ISO data will be ignored */
1653 usb_put_dev(usbvision
->dev
);
1654 usbvision
->dev
= NULL
; /* USB device is no more */
1656 mutex_unlock(&usbvision
->v4l2_lock
);
1658 if (usbvision
->user
) {
1659 printk(KERN_INFO
"%s: In use, disconnect pending\n",
1661 wake_up_interruptible(&usbvision
->wait_frame
);
1662 wake_up_interruptible(&usbvision
->wait_stream
);
1664 usbvision_release(usbvision
);
1667 PDEBUG(DBG_PROBE
, "success");
1670 static struct usb_driver usbvision_driver
= {
1671 .name
= "usbvision",
1672 .id_table
= usbvision_table
,
1673 .probe
= usbvision_probe
,
1674 .disconnect
= usbvision_disconnect
,
1680 * This code is run to initialize the driver.
1683 static int __init
usbvision_init(void)
1687 PDEBUG(DBG_PROBE
, "");
1689 PDEBUG(DBG_IO
, "IO debugging is enabled [video]");
1690 PDEBUG(DBG_PROBE
, "PROBE debugging is enabled [video]");
1691 PDEBUG(DBG_MMAP
, "MMAP debugging is enabled [video]");
1693 /* disable planar mode support unless compression enabled */
1694 if (isoc_mode
!= ISOC_MODE_COMPRESS
) {
1695 /* FIXME : not the right way to set supported flag */
1696 usbvision_v4l2_format
[6].supported
= 0; /* V4L2_PIX_FMT_YVU420 */
1697 usbvision_v4l2_format
[7].supported
= 0; /* V4L2_PIX_FMT_YUV422P */
1700 err_code
= usb_register(&usbvision_driver
);
1702 if (err_code
== 0) {
1703 printk(KERN_INFO DRIVER_DESC
" : " USBVISION_VERSION_STRING
"\n");
1704 PDEBUG(DBG_PROBE
, "success");
1709 static void __exit
usbvision_exit(void)
1711 PDEBUG(DBG_PROBE
, "");
1713 usb_deregister(&usbvision_driver
);
1714 PDEBUG(DBG_PROBE
, "success");
1717 module_init(usbvision_init
);
1718 module_exit(usbvision_exit
);