usbvision: revert commit 588afcc1
[pandora-kernel.git] / drivers / media / video / usbvision / usbvision-video.c
1 /*
2  * USB USBVISION Video device driver 0.9.10
3  *
4  *
5  *
6  * Copyright (c) 1999-2005 Joerg Heckenbach <joerg@heckenbach-aw.de>
7  *
8  * This module is part of usbvision driver project.
9  *
10  * This program is free software; you can redistribute it and/or modify
11  * it under the terms of the GNU General Public License as published by
12  * the Free Software Foundation; either version 2 of the License, or
13  * (at your option) any later version.
14  *
15  * This program is distributed in the hope that it will be useful,
16  * but WITHOUT ANY WARRANTY; without even the implied warranty of
17  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
18  * GNU General Public License for more details.
19  *
20  * You should have received a copy of the GNU General Public License
21  * along with this program; if not, write to the Free Software
22  * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
23  *
24  * Let's call the version 0.... until compression decoding is completely
25  * implemented.
26  *
27  * This driver is written by Jose Ignacio Gijon and Joerg Heckenbach.
28  * It was based on USB CPiA driver written by Peter Pregler,
29  * Scott J. Bertin and Johannes Erdfelt
30  * Ideas are taken from bttv driver by Ralph Metzler, Marcus Metzler &
31  * Gerd Knorr and zoran 36120/36125 driver by Pauline Middelink
32  * Updates to driver completed by Dwaine P. Garden
33  *
34  *
35  * TODO:
36  *     - use submit_urb for all setup packets
37  *     - Fix memory settings for nt1004. It is 4 times as big as the
38  *       nt1003 memory.
39  *     - Add audio on endpoint 3 for nt1004 chip.
40  *         Seems impossible, needs a codec interface.  Which one?
41  *     - Clean up the driver.
42  *     - optimization for performance.
43  *     - Add Videotext capability (VBI).  Working on it.....
44  *     - Check audio for other devices
45  *
46  */
47
48 #include <linux/kernel.h>
49 #include <linux/list.h>
50 #include <linux/timer.h>
51 #include <linux/slab.h>
52 #include <linux/mm.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>
58 #include <linux/io.h>
59 #include <linux/videodev2.h>
60 #include <linux/i2c.h>
61
62 #include <media/saa7115.h>
63 #include <media/v4l2-common.h>
64 #include <media/v4l2-ioctl.h>
65 #include <media/tuner.h>
66
67 #include <linux/workqueue.h>
68
69 #include "usbvision.h"
70 #include "usbvision-cards.h"
71
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"
80
81 #define ENABLE_HEXDUMP  0       /* Enable if you need it */
82
83
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); \
89         }
90 #else
91         #define PDEBUG(level, fmt, args...) do {} while (0)
92 #endif
93
94 #define DBG_IO          (1 << 1)
95 #define DBG_PROBE       (1 << 2)
96 #define DBG_MMAP        (1 << 3)
97
98 /* String operations */
99 #define rmspace(str)    while (*str == ' ') str++;
100 #define goto2next(str)  while (*str != ' ') str++; while (*str == ' ') str++;
101
102
103 /* sequential number of usbvision device */
104 static int usbvision_nr;
105
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" }
115 };
116
117 /* Function prototypes */
118 static void usbvision_release(struct usb_usbvision *usbvision);
119
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;
131
132 /* Grab parameters for the device driver */
133
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);
140
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)");
146
147
148 /* Misc stuff */
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);
154
155
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 /*****************************************************************************/
163
164 #define YES_NO(x) ((x) ? "Yes" : "No")
165
166 static inline struct usb_usbvision *cd_to_usbvision(struct device *cd)
167 {
168         struct video_device *vdev =
169                 container_of(cd, struct video_device, dev);
170         return video_get_drvdata(vdev);
171 }
172
173 static ssize_t show_version(struct device *cd,
174                             struct device_attribute *attr, char *buf)
175 {
176         return sprintf(buf, "%s\n", USBVISION_VERSION_STRING);
177 }
178 static DEVICE_ATTR(version, S_IRUGO, show_version, NULL);
179
180 static ssize_t show_model(struct device *cd,
181                           struct device_attribute *attr, char *buf)
182 {
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);
188 }
189 static DEVICE_ATTR(model, S_IRUGO, show_model, NULL);
190
191 static ssize_t show_hue(struct device *cd,
192                         struct device_attribute *attr, char *buf)
193 {
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;
199         ctrl.value = 0;
200         if (usbvision->user)
201                 call_all(usbvision, core, g_ctrl, &ctrl);
202         return sprintf(buf, "%d\n", ctrl.value);
203 }
204 static DEVICE_ATTR(hue, S_IRUGO, show_hue, NULL);
205
206 static ssize_t show_contrast(struct device *cd,
207                              struct device_attribute *attr, char *buf)
208 {
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;
214         ctrl.value = 0;
215         if (usbvision->user)
216                 call_all(usbvision, core, g_ctrl, &ctrl);
217         return sprintf(buf, "%d\n", ctrl.value);
218 }
219 static DEVICE_ATTR(contrast, S_IRUGO, show_contrast, NULL);
220
221 static ssize_t show_brightness(struct device *cd,
222                                struct device_attribute *attr, char *buf)
223 {
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;
229         ctrl.value = 0;
230         if (usbvision->user)
231                 call_all(usbvision, core, g_ctrl, &ctrl);
232         return sprintf(buf, "%d\n", ctrl.value);
233 }
234 static DEVICE_ATTR(brightness, S_IRUGO, show_brightness, NULL);
235
236 static ssize_t show_saturation(struct device *cd,
237                                struct device_attribute *attr, char *buf)
238 {
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;
244         ctrl.value = 0;
245         if (usbvision->user)
246                 call_all(usbvision, core, g_ctrl, &ctrl);
247         return sprintf(buf, "%d\n", ctrl.value);
248 }
249 static DEVICE_ATTR(saturation, S_IRUGO, show_saturation, NULL);
250
251 static ssize_t show_streaming(struct device *cd,
252                               struct device_attribute *attr, char *buf)
253 {
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));
259 }
260 static DEVICE_ATTR(streaming, S_IRUGO, show_streaming, NULL);
261
262 static ssize_t show_compression(struct device *cd,
263                                 struct device_attribute *attr, char *buf)
264 {
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));
270 }
271 static DEVICE_ATTR(compression, S_IRUGO, show_compression, NULL);
272
273 static ssize_t show_device_bridge(struct device *cd,
274                                   struct device_attribute *attr, char *buf)
275 {
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);
280 }
281 static DEVICE_ATTR(bridge, S_IRUGO, show_device_bridge, NULL);
282
283 static void usbvision_create_sysfs(struct video_device *vdev)
284 {
285         int res;
286
287         if (!vdev)
288                 return;
289         do {
290                 res = device_create_file(&vdev->dev, &dev_attr_version);
291                 if (res < 0)
292                         break;
293                 res = device_create_file(&vdev->dev, &dev_attr_model);
294                 if (res < 0)
295                         break;
296                 res = device_create_file(&vdev->dev, &dev_attr_hue);
297                 if (res < 0)
298                         break;
299                 res = device_create_file(&vdev->dev, &dev_attr_contrast);
300                 if (res < 0)
301                         break;
302                 res = device_create_file(&vdev->dev, &dev_attr_brightness);
303                 if (res < 0)
304                         break;
305                 res = device_create_file(&vdev->dev, &dev_attr_saturation);
306                 if (res < 0)
307                         break;
308                 res = device_create_file(&vdev->dev, &dev_attr_streaming);
309                 if (res < 0)
310                         break;
311                 res = device_create_file(&vdev->dev, &dev_attr_compression);
312                 if (res < 0)
313                         break;
314                 res = device_create_file(&vdev->dev, &dev_attr_bridge);
315                 if (res >= 0)
316                         return;
317         } while (0);
318
319         dev_err(&vdev->dev, "%s error: %d\n", __func__, res);
320 }
321
322 static void usbvision_remove_sysfs(struct video_device *vdev)
323 {
324         if (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);
334         }
335 }
336
337 /*
338  * usbvision_open()
339  *
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.
343  *
344  */
345 static int usbvision_v4l2_open(struct file *file)
346 {
347         struct usb_usbvision *usbvision = video_drvdata(file);
348         int err_code = 0;
349
350         PDEBUG(DBG_IO, "open");
351
352         usbvision_reset_power_off_timer(usbvision);
353
354         if (usbvision->user)
355                 err_code = -EBUSY;
356         else {
357                 /* Allocate memory for the scratch ring buffer */
358                 err_code = usbvision_scratch_alloc(usbvision);
359                 if (isoc_mode == ISOC_MODE_COMPRESS) {
360                         /* Allocate intermediate decompression buffers
361                            only if needed */
362                         err_code = usbvision_decompress_alloc(usbvision);
363                 }
364                 if (err_code) {
365                         /* Deallocate all buffers if trouble */
366                         usbvision_scratch_free(usbvision);
367                         usbvision_decompress_free(usbvision);
368                 }
369         }
370
371         /* If so far no errors then we shall start the camera */
372         if (!err_code) {
373                 if (usbvision->power == 0) {
374                         usbvision_power_on(usbvision);
375                         usbvision_i2c_register(usbvision);
376                 }
377
378                 /* Send init sequence only once, it's large! */
379                 if (!usbvision->initialized) {
380                         int setup_ok = 0;
381                         setup_ok = usbvision_setup(usbvision, isoc_mode);
382                         if (setup_ok)
383                                 usbvision->initialized = 1;
384                         else
385                                 err_code = -EBUSY;
386                 }
387
388                 if (!err_code) {
389                         usbvision_begin_streaming(usbvision);
390                         err_code = usbvision_init_isoc(usbvision);
391                         /* device must be initialized before isoc transfer */
392                         usbvision_muxsel(usbvision, 0);
393                         usbvision->user++;
394                 } else {
395                         if (power_on_at_open) {
396                                 usbvision_i2c_unregister(usbvision);
397                                 usbvision_power_off(usbvision);
398                                 usbvision->initialized = 0;
399                         }
400                 }
401         }
402
403         /* prepare queues */
404         usbvision_empty_framequeues(usbvision);
405
406         PDEBUG(DBG_IO, "success");
407         return err_code;
408 }
409
410 /*
411  * usbvision_v4l2_close()
412  *
413  * This is part of Video 4 Linux API. The procedure
414  * stops streaming and deallocates all buffers that were earlier
415  * allocated in usbvision_v4l2_open().
416  *
417  */
418 static int usbvision_v4l2_close(struct file *file)
419 {
420         struct usb_usbvision *usbvision = video_drvdata(file);
421
422         PDEBUG(DBG_IO, "close");
423
424         usbvision_audio_off(usbvision);
425         usbvision_restart_isoc(usbvision);
426         usbvision_stop_isoc(usbvision);
427
428         usbvision_decompress_free(usbvision);
429         usbvision_frames_free(usbvision);
430         usbvision_empty_framequeues(usbvision);
431         usbvision_scratch_free(usbvision);
432
433         usbvision->user--;
434
435         if (power_on_at_open) {
436                 /* power off in a little while
437                    to avoid off/on every close/open short sequences */
438                 usbvision_set_power_off_timer(usbvision);
439                 usbvision->initialized = 0;
440         }
441
442         if (usbvision->remove_pending) {
443                 printk(KERN_INFO "%s: Final disconnect\n", __func__);
444                 usbvision_release(usbvision);
445         }
446
447         PDEBUG(DBG_IO, "success");
448         return 0;
449 }
450
451
452 /*
453  * usbvision_ioctl()
454  *
455  * This is part of Video 4 Linux API. The procedure handles ioctl() calls.
456  *
457  */
458 #ifdef CONFIG_VIDEO_ADV_DEBUG
459 static int vidioc_g_register(struct file *file, void *priv,
460                                 struct v4l2_dbg_register *reg)
461 {
462         struct usb_usbvision *usbvision = video_drvdata(file);
463         int err_code;
464
465         if (!v4l2_chip_match_host(&reg->match))
466                 return -EINVAL;
467         /* NT100x has a 8-bit register space */
468         err_code = usbvision_read_reg(usbvision, reg->reg&0xff);
469         if (err_code < 0) {
470                 dev_err(&usbvision->vdev->dev,
471                         "%s: VIDIOC_DBG_G_REGISTER failed: error %d\n",
472                                 __func__, err_code);
473                 return err_code;
474         }
475         reg->val = err_code;
476         reg->size = 1;
477         return 0;
478 }
479
480 static int vidioc_s_register(struct file *file, void *priv,
481                                 struct v4l2_dbg_register *reg)
482 {
483         struct usb_usbvision *usbvision = video_drvdata(file);
484         int err_code;
485
486         if (!v4l2_chip_match_host(&reg->match))
487                 return -EINVAL;
488         /* NT100x has a 8-bit register space */
489         err_code = usbvision_write_reg(usbvision, reg->reg & 0xff, reg->val);
490         if (err_code < 0) {
491                 dev_err(&usbvision->vdev->dev,
492                         "%s: VIDIOC_DBG_S_REGISTER failed: error %d\n",
493                                 __func__, err_code);
494                 return err_code;
495         }
496         return 0;
497 }
498 #endif
499
500 static int vidioc_querycap(struct file *file, void  *priv,
501                                         struct v4l2_capability *vc)
502 {
503         struct usb_usbvision *usbvision = video_drvdata(file);
504
505         strlcpy(vc->driver, "USBVision", sizeof(vc->driver));
506         strlcpy(vc->card,
507                 usbvision_device_data[usbvision->dev_model].model_string,
508                 sizeof(vc->card));
509         usb_make_path(usbvision->dev, vc->bus_info, sizeof(vc->bus_info));
510         vc->capabilities = V4L2_CAP_VIDEO_CAPTURE |
511                 V4L2_CAP_AUDIO |
512                 V4L2_CAP_READWRITE |
513                 V4L2_CAP_STREAMING |
514                 (usbvision->have_tuner ? V4L2_CAP_TUNER : 0);
515         return 0;
516 }
517
518 static int vidioc_enum_input(struct file *file, void *priv,
519                                 struct v4l2_input *vi)
520 {
521         struct usb_usbvision *usbvision = video_drvdata(file);
522         int chan;
523
524         if (vi->index >= usbvision->video_inputs)
525                 return -EINVAL;
526         if (usbvision->have_tuner)
527                 chan = vi->index;
528         else
529                 chan = vi->index + 1; /* skip Television string*/
530
531         /* Determine the requested input characteristics
532            specific for each usbvision card model */
533         switch (chan) {
534         case 0:
535                 if (usbvision_device_data[usbvision->dev_model].video_channels == 4) {
536                         strcpy(vi->name, "White Video Input");
537                 } else {
538                         strcpy(vi->name, "Television");
539                         vi->type = V4L2_INPUT_TYPE_TUNER;
540                         vi->audioset = 1;
541                         vi->tuner = chan;
542                         vi->std = USBVISION_NORMS;
543                 }
544                 break;
545         case 1:
546                 vi->type = V4L2_INPUT_TYPE_CAMERA;
547                 if (usbvision_device_data[usbvision->dev_model].video_channels == 4)
548                         strcpy(vi->name, "Green Video Input");
549                 else
550                         strcpy(vi->name, "Composite Video Input");
551                 vi->std = V4L2_STD_PAL;
552                 break;
553         case 2:
554                 vi->type = V4L2_INPUT_TYPE_CAMERA;
555                 if (usbvision_device_data[usbvision->dev_model].video_channels == 4)
556                         strcpy(vi->name, "Yellow Video Input");
557                 else
558                         strcpy(vi->name, "S-Video Input");
559                 vi->std = V4L2_STD_PAL;
560                 break;
561         case 3:
562                 vi->type = V4L2_INPUT_TYPE_CAMERA;
563                 strcpy(vi->name, "Red Video Input");
564                 vi->std = V4L2_STD_PAL;
565                 break;
566         }
567         return 0;
568 }
569
570 static int vidioc_g_input(struct file *file, void *priv, unsigned int *input)
571 {
572         struct usb_usbvision *usbvision = video_drvdata(file);
573
574         *input = usbvision->ctl_input;
575         return 0;
576 }
577
578 static int vidioc_s_input(struct file *file, void *priv, unsigned int input)
579 {
580         struct usb_usbvision *usbvision = video_drvdata(file);
581
582         if (input >= usbvision->video_inputs)
583                 return -EINVAL;
584
585         usbvision_muxsel(usbvision, input);
586         usbvision_set_input(usbvision);
587         usbvision_set_output(usbvision,
588                              usbvision->curwidth,
589                              usbvision->curheight);
590         return 0;
591 }
592
593 static int vidioc_s_std(struct file *file, void *priv, v4l2_std_id *id)
594 {
595         struct usb_usbvision *usbvision = video_drvdata(file);
596
597         usbvision->tvnorm_id = *id;
598
599         call_all(usbvision, core, s_std, usbvision->tvnorm_id);
600         /* propagate the change to the decoder */
601         usbvision_muxsel(usbvision, usbvision->ctl_input);
602
603         return 0;
604 }
605
606 static int vidioc_g_tuner(struct file *file, void *priv,
607                                 struct v4l2_tuner *vt)
608 {
609         struct usb_usbvision *usbvision = video_drvdata(file);
610
611         if (!usbvision->have_tuner || vt->index)        /* Only tuner 0 */
612                 return -EINVAL;
613         if (usbvision->radio) {
614                 strcpy(vt->name, "Radio");
615                 vt->type = V4L2_TUNER_RADIO;
616         } else {
617                 strcpy(vt->name, "Television");
618         }
619         /* Let clients fill in the remainder of this struct */
620         call_all(usbvision, tuner, g_tuner, vt);
621
622         return 0;
623 }
624
625 static int vidioc_s_tuner(struct file *file, void *priv,
626                                 struct v4l2_tuner *vt)
627 {
628         struct usb_usbvision *usbvision = video_drvdata(file);
629
630         /* Only no or one tuner for now */
631         if (!usbvision->have_tuner || vt->index)
632                 return -EINVAL;
633         /* let clients handle this */
634         call_all(usbvision, tuner, s_tuner, vt);
635
636         return 0;
637 }
638
639 static int vidioc_g_frequency(struct file *file, void *priv,
640                                 struct v4l2_frequency *freq)
641 {
642         struct usb_usbvision *usbvision = video_drvdata(file);
643
644         freq->tuner = 0; /* Only one tuner */
645         if (usbvision->radio)
646                 freq->type = V4L2_TUNER_RADIO;
647         else
648                 freq->type = V4L2_TUNER_ANALOG_TV;
649         freq->frequency = usbvision->freq;
650
651         return 0;
652 }
653
654 static int vidioc_s_frequency(struct file *file, void *priv,
655                                 struct v4l2_frequency *freq)
656 {
657         struct usb_usbvision *usbvision = video_drvdata(file);
658
659         /* Only no or one tuner for now */
660         if (!usbvision->have_tuner || freq->tuner)
661                 return -EINVAL;
662
663         usbvision->freq = freq->frequency;
664         call_all(usbvision, tuner, s_frequency, freq);
665
666         return 0;
667 }
668
669 static int vidioc_g_audio(struct file *file, void *priv, struct v4l2_audio *a)
670 {
671         struct usb_usbvision *usbvision = video_drvdata(file);
672
673         if (usbvision->radio)
674                 strcpy(a->name, "Radio");
675         else
676                 strcpy(a->name, "TV");
677
678         return 0;
679 }
680
681 static int vidioc_s_audio(struct file *file, void *fh,
682                           struct v4l2_audio *a)
683 {
684         if (a->index)
685                 return -EINVAL;
686         return 0;
687 }
688
689 static int vidioc_queryctrl(struct file *file, void *priv,
690                             struct v4l2_queryctrl *ctrl)
691 {
692         struct usb_usbvision *usbvision = video_drvdata(file);
693
694         call_all(usbvision, core, queryctrl, ctrl);
695
696         if (!ctrl->type)
697                 return -EINVAL;
698
699         return 0;
700 }
701
702 static int vidioc_g_ctrl(struct file *file, void *priv,
703                                 struct v4l2_control *ctrl)
704 {
705         struct usb_usbvision *usbvision = video_drvdata(file);
706
707         call_all(usbvision, core, g_ctrl, ctrl);
708         return 0;
709 }
710
711 static int vidioc_s_ctrl(struct file *file, void *priv,
712                                 struct v4l2_control *ctrl)
713 {
714         struct usb_usbvision *usbvision = video_drvdata(file);
715
716         call_all(usbvision, core, s_ctrl, ctrl);
717         return 0;
718 }
719
720 static int vidioc_reqbufs(struct file *file,
721                            void *priv, struct v4l2_requestbuffers *vr)
722 {
723         struct usb_usbvision *usbvision = video_drvdata(file);
724         int ret;
725
726         RESTRICT_TO_RANGE(vr->count, 1, USBVISION_NUMFRAMES);
727
728         /* Check input validity:
729            the user must do a VIDEO CAPTURE and MMAP method. */
730         if (vr->memory != V4L2_MEMORY_MMAP)
731                 return -EINVAL;
732
733         if (usbvision->streaming == stream_on) {
734                 ret = usbvision_stream_interrupt(usbvision);
735                 if (ret)
736                         return ret;
737         }
738
739         usbvision_frames_free(usbvision);
740         usbvision_empty_framequeues(usbvision);
741         vr->count = usbvision_frames_alloc(usbvision, vr->count);
742
743         usbvision->cur_frame = NULL;
744
745         return 0;
746 }
747
748 static int vidioc_querybuf(struct file *file,
749                             void *priv, struct v4l2_buffer *vb)
750 {
751         struct usb_usbvision *usbvision = video_drvdata(file);
752         struct usbvision_frame *frame;
753
754         /* FIXME : must control
755            that buffers are mapped (VIDIOC_REQBUFS has been called) */
756         if (vb->index >= usbvision->num_frames)
757                 return -EINVAL;
758         /* Updating the corresponding frame state */
759         vb->flags = 0;
760         frame = &usbvision->frame[vb->index];
761         if (frame->grabstate >= frame_state_ready)
762                 vb->flags |= V4L2_BUF_FLAG_QUEUED;
763         if (frame->grabstate >= frame_state_done)
764                 vb->flags |= V4L2_BUF_FLAG_DONE;
765         if (frame->grabstate == frame_state_unused)
766                 vb->flags |= V4L2_BUF_FLAG_MAPPED;
767         vb->memory = V4L2_MEMORY_MMAP;
768
769         vb->m.offset = vb->index * PAGE_ALIGN(usbvision->max_frame_size);
770
771         vb->memory = V4L2_MEMORY_MMAP;
772         vb->field = V4L2_FIELD_NONE;
773         vb->length = usbvision->curwidth *
774                 usbvision->curheight *
775                 usbvision->palette.bytes_per_pixel;
776         vb->timestamp = usbvision->frame[vb->index].timestamp;
777         vb->sequence = usbvision->frame[vb->index].sequence;
778         return 0;
779 }
780
781 static int vidioc_qbuf(struct file *file, void *priv, struct v4l2_buffer *vb)
782 {
783         struct usb_usbvision *usbvision = video_drvdata(file);
784         struct usbvision_frame *frame;
785         unsigned long lock_flags;
786
787         /* FIXME : works only on VIDEO_CAPTURE MODE, MMAP. */
788         if (vb->index >= usbvision->num_frames)
789                 return -EINVAL;
790
791         frame = &usbvision->frame[vb->index];
792
793         if (frame->grabstate != frame_state_unused)
794                 return -EAGAIN;
795
796         /* Mark it as ready and enqueue frame */
797         frame->grabstate = frame_state_ready;
798         frame->scanstate = scan_state_scanning;
799         frame->scanlength = 0;  /* Accumulated in usbvision_parse_data() */
800
801         vb->flags &= ~V4L2_BUF_FLAG_DONE;
802
803         /* set v4l2_format index */
804         frame->v4l2_format = usbvision->palette;
805
806         spin_lock_irqsave(&usbvision->queue_lock, lock_flags);
807         list_add_tail(&usbvision->frame[vb->index].frame, &usbvision->inqueue);
808         spin_unlock_irqrestore(&usbvision->queue_lock, lock_flags);
809
810         return 0;
811 }
812
813 static int vidioc_dqbuf(struct file *file, void *priv, struct v4l2_buffer *vb)
814 {
815         struct usb_usbvision *usbvision = video_drvdata(file);
816         int ret;
817         struct usbvision_frame *f;
818         unsigned long lock_flags;
819
820         if (list_empty(&(usbvision->outqueue))) {
821                 if (usbvision->streaming == stream_idle)
822                         return -EINVAL;
823                 ret = wait_event_interruptible
824                         (usbvision->wait_frame,
825                          !list_empty(&(usbvision->outqueue)));
826                 if (ret)
827                         return ret;
828         }
829
830         spin_lock_irqsave(&usbvision->queue_lock, lock_flags);
831         f = list_entry(usbvision->outqueue.next,
832                        struct usbvision_frame, frame);
833         list_del(usbvision->outqueue.next);
834         spin_unlock_irqrestore(&usbvision->queue_lock, lock_flags);
835
836         f->grabstate = frame_state_unused;
837
838         vb->memory = V4L2_MEMORY_MMAP;
839         vb->flags = V4L2_BUF_FLAG_MAPPED |
840                 V4L2_BUF_FLAG_QUEUED |
841                 V4L2_BUF_FLAG_DONE;
842         vb->index = f->index;
843         vb->sequence = f->sequence;
844         vb->timestamp = f->timestamp;
845         vb->field = V4L2_FIELD_NONE;
846         vb->bytesused = f->scanlength;
847
848         return 0;
849 }
850
851 static int vidioc_streamon(struct file *file, void *priv, enum v4l2_buf_type i)
852 {
853         struct usb_usbvision *usbvision = video_drvdata(file);
854
855         usbvision->streaming = stream_on;
856         call_all(usbvision, video, s_stream, 1);
857
858         return 0;
859 }
860
861 static int vidioc_streamoff(struct file *file,
862                             void *priv, enum v4l2_buf_type type)
863 {
864         struct usb_usbvision *usbvision = video_drvdata(file);
865
866         if (type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
867                 return -EINVAL;
868
869         if (usbvision->streaming == stream_on) {
870                 usbvision_stream_interrupt(usbvision);
871                 /* Stop all video streamings */
872                 call_all(usbvision, video, s_stream, 0);
873         }
874         usbvision_empty_framequeues(usbvision);
875
876         return 0;
877 }
878
879 static int vidioc_enum_fmt_vid_cap(struct file *file, void  *priv,
880                                         struct v4l2_fmtdesc *vfd)
881 {
882         if (vfd->index >= USBVISION_SUPPORTED_PALETTES - 1)
883                 return -EINVAL;
884         strcpy(vfd->description, usbvision_v4l2_format[vfd->index].desc);
885         vfd->pixelformat = usbvision_v4l2_format[vfd->index].format;
886         return 0;
887 }
888
889 static int vidioc_g_fmt_vid_cap(struct file *file, void *priv,
890                                         struct v4l2_format *vf)
891 {
892         struct usb_usbvision *usbvision = video_drvdata(file);
893         vf->fmt.pix.width = usbvision->curwidth;
894         vf->fmt.pix.height = usbvision->curheight;
895         vf->fmt.pix.pixelformat = usbvision->palette.format;
896         vf->fmt.pix.bytesperline =
897                 usbvision->curwidth * usbvision->palette.bytes_per_pixel;
898         vf->fmt.pix.sizeimage = vf->fmt.pix.bytesperline * usbvision->curheight;
899         vf->fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M;
900         vf->fmt.pix.field = V4L2_FIELD_NONE; /* Always progressive image */
901
902         return 0;
903 }
904
905 static int vidioc_try_fmt_vid_cap(struct file *file, void *priv,
906                                struct v4l2_format *vf)
907 {
908         struct usb_usbvision *usbvision = video_drvdata(file);
909         int format_idx;
910
911         /* Find requested format in available ones */
912         for (format_idx = 0; format_idx < USBVISION_SUPPORTED_PALETTES; format_idx++) {
913                 if (vf->fmt.pix.pixelformat ==
914                    usbvision_v4l2_format[format_idx].format) {
915                         usbvision->palette = usbvision_v4l2_format[format_idx];
916                         break;
917                 }
918         }
919         /* robustness */
920         if (format_idx == USBVISION_SUPPORTED_PALETTES)
921                 return -EINVAL;
922         RESTRICT_TO_RANGE(vf->fmt.pix.width, MIN_FRAME_WIDTH, MAX_FRAME_WIDTH);
923         RESTRICT_TO_RANGE(vf->fmt.pix.height, MIN_FRAME_HEIGHT, MAX_FRAME_HEIGHT);
924
925         vf->fmt.pix.bytesperline = vf->fmt.pix.width*
926                 usbvision->palette.bytes_per_pixel;
927         vf->fmt.pix.sizeimage = vf->fmt.pix.bytesperline*vf->fmt.pix.height;
928
929         return 0;
930 }
931
932 static int vidioc_s_fmt_vid_cap(struct file *file, void *priv,
933                                struct v4l2_format *vf)
934 {
935         struct usb_usbvision *usbvision = video_drvdata(file);
936         int ret;
937
938         ret = vidioc_try_fmt_vid_cap(file, priv, vf);
939         if (ret)
940                 return ret;
941
942         /* stop io in case it is already in progress */
943         if (usbvision->streaming == stream_on) {
944                 ret = usbvision_stream_interrupt(usbvision);
945                 if (ret)
946                         return ret;
947         }
948         usbvision_frames_free(usbvision);
949         usbvision_empty_framequeues(usbvision);
950
951         usbvision->cur_frame = NULL;
952
953         /* by now we are committed to the new data... */
954         usbvision_set_output(usbvision, vf->fmt.pix.width, vf->fmt.pix.height);
955
956         return 0;
957 }
958
959 static ssize_t usbvision_v4l2_read(struct file *file, char __user *buf,
960                       size_t count, loff_t *ppos)
961 {
962         struct usb_usbvision *usbvision = video_drvdata(file);
963         int noblock = file->f_flags & O_NONBLOCK;
964         unsigned long lock_flags;
965         int ret, i;
966         struct usbvision_frame *frame;
967
968         PDEBUG(DBG_IO, "%s: %ld bytes, noblock=%d", __func__,
969                (unsigned long)count, noblock);
970
971         if (!USBVISION_IS_OPERATIONAL(usbvision) || (buf == NULL))
972                 return -EFAULT;
973
974         /* This entry point is compatible with the mmap routines
975            so that a user can do either VIDIOC_QBUF/VIDIOC_DQBUF
976            to get frames or call read on the device. */
977         if (!usbvision->num_frames) {
978                 /* First, allocate some frames to work with
979                    if this has not been done with VIDIOC_REQBUF */
980                 usbvision_frames_free(usbvision);
981                 usbvision_empty_framequeues(usbvision);
982                 usbvision_frames_alloc(usbvision, USBVISION_NUMFRAMES);
983         }
984
985         if (usbvision->streaming != stream_on) {
986                 /* no stream is running, make it running ! */
987                 usbvision->streaming = stream_on;
988                 call_all(usbvision, video, s_stream, 1);
989         }
990
991         /* Then, enqueue as many frames as possible
992            (like a user of VIDIOC_QBUF would do) */
993         for (i = 0; i < usbvision->num_frames; i++) {
994                 frame = &usbvision->frame[i];
995                 if (frame->grabstate == frame_state_unused) {
996                         /* Mark it as ready and enqueue frame */
997                         frame->grabstate = frame_state_ready;
998                         frame->scanstate = scan_state_scanning;
999                         /* Accumulated in usbvision_parse_data() */
1000                         frame->scanlength = 0;
1001
1002                         /* set v4l2_format index */
1003                         frame->v4l2_format = usbvision->palette;
1004
1005                         spin_lock_irqsave(&usbvision->queue_lock, lock_flags);
1006                         list_add_tail(&frame->frame, &usbvision->inqueue);
1007                         spin_unlock_irqrestore(&usbvision->queue_lock,
1008                                                lock_flags);
1009                 }
1010         }
1011
1012         /* Then try to steal a frame (like a VIDIOC_DQBUF would do) */
1013         if (list_empty(&(usbvision->outqueue))) {
1014                 if (noblock)
1015                         return -EAGAIN;
1016
1017                 ret = wait_event_interruptible
1018                         (usbvision->wait_frame,
1019                          !list_empty(&(usbvision->outqueue)));
1020                 if (ret)
1021                         return ret;
1022         }
1023
1024         spin_lock_irqsave(&usbvision->queue_lock, lock_flags);
1025         frame = list_entry(usbvision->outqueue.next,
1026                            struct usbvision_frame, frame);
1027         list_del(usbvision->outqueue.next);
1028         spin_unlock_irqrestore(&usbvision->queue_lock, lock_flags);
1029
1030         /* An error returns an empty frame */
1031         if (frame->grabstate == frame_state_error) {
1032                 frame->bytes_read = 0;
1033                 return 0;
1034         }
1035
1036         PDEBUG(DBG_IO, "%s: frmx=%d, bytes_read=%ld, scanlength=%ld",
1037                __func__,
1038                frame->index, frame->bytes_read, frame->scanlength);
1039
1040         /* copy bytes to user space; we allow for partials reads */
1041         if ((count + frame->bytes_read) > (unsigned long)frame->scanlength)
1042                 count = frame->scanlength - frame->bytes_read;
1043
1044         if (copy_to_user(buf, frame->data + frame->bytes_read, count))
1045                 return -EFAULT;
1046
1047         frame->bytes_read += count;
1048         PDEBUG(DBG_IO, "%s: {copy} count used=%ld, new bytes_read=%ld",
1049                __func__,
1050                (unsigned long)count, frame->bytes_read);
1051
1052         /* For now, forget the frame if it has not been read in one shot. */
1053 /*      if (frame->bytes_read >= frame->scanlength) {*/ /* All data has been read */
1054                 frame->bytes_read = 0;
1055
1056                 /* Mark it as available to be used again. */
1057                 frame->grabstate = frame_state_unused;
1058 /*      } */
1059
1060         return count;
1061 }
1062
1063 static int usbvision_v4l2_mmap(struct file *file, struct vm_area_struct *vma)
1064 {
1065         unsigned long size = vma->vm_end - vma->vm_start,
1066                 start = vma->vm_start;
1067         void *pos;
1068         u32 i;
1069         struct usb_usbvision *usbvision = video_drvdata(file);
1070
1071         PDEBUG(DBG_MMAP, "mmap");
1072
1073         if (!USBVISION_IS_OPERATIONAL(usbvision))
1074                 return -EFAULT;
1075
1076         if (!(vma->vm_flags & VM_WRITE) ||
1077             size != PAGE_ALIGN(usbvision->max_frame_size)) {
1078                 return -EINVAL;
1079         }
1080
1081         for (i = 0; i < usbvision->num_frames; i++) {
1082                 if (((PAGE_ALIGN(usbvision->max_frame_size)*i) >> PAGE_SHIFT) ==
1083                     vma->vm_pgoff)
1084                         break;
1085         }
1086         if (i == usbvision->num_frames) {
1087                 PDEBUG(DBG_MMAP,
1088                        "mmap: user supplied mapping address is out of range");
1089                 return -EINVAL;
1090         }
1091
1092         /* VM_IO is eventually going to replace PageReserved altogether */
1093         vma->vm_flags |= VM_IO;
1094         vma->vm_flags |= VM_RESERVED;   /* avoid to swap out this VMA */
1095
1096         pos = usbvision->frame[i].data;
1097         while (size > 0) {
1098                 if (vm_insert_page(vma, start, vmalloc_to_page(pos))) {
1099                         PDEBUG(DBG_MMAP, "mmap: vm_insert_page failed");
1100                         return -EAGAIN;
1101                 }
1102                 start += PAGE_SIZE;
1103                 pos += PAGE_SIZE;
1104                 size -= PAGE_SIZE;
1105         }
1106
1107         return 0;
1108 }
1109
1110
1111 /*
1112  * Here comes the stuff for radio on usbvision based devices
1113  *
1114  */
1115 static int usbvision_radio_open(struct file *file)
1116 {
1117         struct usb_usbvision *usbvision = video_drvdata(file);
1118         int err_code = 0;
1119
1120         PDEBUG(DBG_IO, "%s:", __func__);
1121
1122         if (usbvision->user) {
1123                 dev_err(&usbvision->rdev->dev,
1124                         "%s: Someone tried to open an already opened USBVision Radio!\n",
1125                                 __func__);
1126                 err_code = -EBUSY;
1127         } else {
1128                 if (power_on_at_open) {
1129                         usbvision_reset_power_off_timer(usbvision);
1130                         if (usbvision->power == 0) {
1131                                 usbvision_power_on(usbvision);
1132                                 usbvision_i2c_register(usbvision);
1133                         }
1134                 }
1135
1136                 /* Alternate interface 1 is is the biggest frame size */
1137                 err_code = usbvision_set_alternate(usbvision);
1138                 if (err_code < 0) {
1139                         usbvision->last_error = err_code;
1140                         err_code = -EBUSY;
1141                         goto out;
1142                 }
1143
1144                 /* If so far no errors then we shall start the radio */
1145                 usbvision->radio = 1;
1146                 call_all(usbvision, tuner, s_radio);
1147                 usbvision_set_audio(usbvision, USBVISION_AUDIO_RADIO);
1148                 usbvision->user++;
1149         }
1150
1151         if (err_code) {
1152                 if (power_on_at_open) {
1153                         usbvision_i2c_unregister(usbvision);
1154                         usbvision_power_off(usbvision);
1155                         usbvision->initialized = 0;
1156                 }
1157         }
1158 out:
1159         return err_code;
1160 }
1161
1162
1163 static int usbvision_radio_close(struct file *file)
1164 {
1165         struct usb_usbvision *usbvision = video_drvdata(file);
1166         int err_code = 0;
1167
1168         PDEBUG(DBG_IO, "");
1169
1170         /* Set packet size to 0 */
1171         usbvision->iface_alt = 0;
1172         err_code = usb_set_interface(usbvision->dev, usbvision->iface,
1173                                     usbvision->iface_alt);
1174
1175         usbvision_audio_off(usbvision);
1176         usbvision->radio = 0;
1177         usbvision->user--;
1178
1179         if (power_on_at_open) {
1180                 usbvision_set_power_off_timer(usbvision);
1181                 usbvision->initialized = 0;
1182         }
1183
1184         if (usbvision->remove_pending) {
1185                 printk(KERN_INFO "%s: Final disconnect\n", __func__);
1186                 usbvision_release(usbvision);
1187         }
1188
1189         PDEBUG(DBG_IO, "success");
1190         return err_code;
1191 }
1192
1193 /* Video registration stuff */
1194
1195 /* Video template */
1196 static const struct v4l2_file_operations usbvision_fops = {
1197         .owner             = THIS_MODULE,
1198         .open           = usbvision_v4l2_open,
1199         .release        = usbvision_v4l2_close,
1200         .read           = usbvision_v4l2_read,
1201         .mmap           = usbvision_v4l2_mmap,
1202         .unlocked_ioctl = video_ioctl2,
1203 /*      .poll           = video_poll, */
1204 };
1205
1206 static const struct v4l2_ioctl_ops usbvision_ioctl_ops = {
1207         .vidioc_querycap      = vidioc_querycap,
1208         .vidioc_enum_fmt_vid_cap  = vidioc_enum_fmt_vid_cap,
1209         .vidioc_g_fmt_vid_cap     = vidioc_g_fmt_vid_cap,
1210         .vidioc_try_fmt_vid_cap   = vidioc_try_fmt_vid_cap,
1211         .vidioc_s_fmt_vid_cap     = vidioc_s_fmt_vid_cap,
1212         .vidioc_reqbufs       = vidioc_reqbufs,
1213         .vidioc_querybuf      = vidioc_querybuf,
1214         .vidioc_qbuf          = vidioc_qbuf,
1215         .vidioc_dqbuf         = vidioc_dqbuf,
1216         .vidioc_s_std         = vidioc_s_std,
1217         .vidioc_enum_input    = vidioc_enum_input,
1218         .vidioc_g_input       = vidioc_g_input,
1219         .vidioc_s_input       = vidioc_s_input,
1220         .vidioc_queryctrl     = vidioc_queryctrl,
1221         .vidioc_g_audio       = vidioc_g_audio,
1222         .vidioc_s_audio       = vidioc_s_audio,
1223         .vidioc_g_ctrl        = vidioc_g_ctrl,
1224         .vidioc_s_ctrl        = vidioc_s_ctrl,
1225         .vidioc_streamon      = vidioc_streamon,
1226         .vidioc_streamoff     = vidioc_streamoff,
1227         .vidioc_g_tuner       = vidioc_g_tuner,
1228         .vidioc_s_tuner       = vidioc_s_tuner,
1229         .vidioc_g_frequency   = vidioc_g_frequency,
1230         .vidioc_s_frequency   = vidioc_s_frequency,
1231 #ifdef CONFIG_VIDEO_ADV_DEBUG
1232         .vidioc_g_register    = vidioc_g_register,
1233         .vidioc_s_register    = vidioc_s_register,
1234 #endif
1235 };
1236
1237 static struct video_device usbvision_video_template = {
1238         .fops           = &usbvision_fops,
1239         .ioctl_ops      = &usbvision_ioctl_ops,
1240         .name           = "usbvision-video",
1241         .release        = video_device_release,
1242         .tvnorms        = USBVISION_NORMS,
1243         .current_norm   = V4L2_STD_PAL
1244 };
1245
1246
1247 /* Radio template */
1248 static const struct v4l2_file_operations usbvision_radio_fops = {
1249         .owner             = THIS_MODULE,
1250         .open           = usbvision_radio_open,
1251         .release        = usbvision_radio_close,
1252         .unlocked_ioctl = video_ioctl2,
1253 };
1254
1255 static const struct v4l2_ioctl_ops usbvision_radio_ioctl_ops = {
1256         .vidioc_querycap      = vidioc_querycap,
1257         .vidioc_enum_input    = vidioc_enum_input,
1258         .vidioc_g_input       = vidioc_g_input,
1259         .vidioc_s_input       = vidioc_s_input,
1260         .vidioc_queryctrl     = vidioc_queryctrl,
1261         .vidioc_g_audio       = vidioc_g_audio,
1262         .vidioc_s_audio       = vidioc_s_audio,
1263         .vidioc_g_ctrl        = vidioc_g_ctrl,
1264         .vidioc_s_ctrl        = vidioc_s_ctrl,
1265         .vidioc_g_tuner       = vidioc_g_tuner,
1266         .vidioc_s_tuner       = vidioc_s_tuner,
1267         .vidioc_g_frequency   = vidioc_g_frequency,
1268         .vidioc_s_frequency   = vidioc_s_frequency,
1269 };
1270
1271 static struct video_device usbvision_radio_template = {
1272         .fops           = &usbvision_radio_fops,
1273         .name           = "usbvision-radio",
1274         .release        = video_device_release,
1275         .ioctl_ops      = &usbvision_radio_ioctl_ops,
1276
1277         .tvnorms              = USBVISION_NORMS,
1278         .current_norm         = V4L2_STD_PAL
1279 };
1280
1281
1282 static struct video_device *usbvision_vdev_init(struct usb_usbvision *usbvision,
1283                                         struct video_device *vdev_template,
1284                                         char *name)
1285 {
1286         struct usb_device *usb_dev = usbvision->dev;
1287         struct video_device *vdev;
1288
1289         if (usb_dev == NULL) {
1290                 dev_err(&usbvision->dev->dev,
1291                         "%s: usbvision->dev is not set\n", __func__);
1292                 return NULL;
1293         }
1294
1295         vdev = video_device_alloc();
1296         if (NULL == vdev)
1297                 return NULL;
1298         *vdev = *vdev_template;
1299         vdev->lock = &usbvision->v4l2_lock;
1300         vdev->v4l2_dev = &usbvision->v4l2_dev;
1301         snprintf(vdev->name, sizeof(vdev->name), "%s", name);
1302         video_set_drvdata(vdev, usbvision);
1303         return vdev;
1304 }
1305
1306 /* unregister video4linux devices */
1307 static void usbvision_unregister_video(struct usb_usbvision *usbvision)
1308 {
1309         /* Radio Device: */
1310         if (usbvision->rdev) {
1311                 PDEBUG(DBG_PROBE, "unregister %s [v4l2]",
1312                        video_device_node_name(usbvision->rdev));
1313                 if (video_is_registered(usbvision->rdev))
1314                         video_unregister_device(usbvision->rdev);
1315                 else
1316                         video_device_release(usbvision->rdev);
1317                 usbvision->rdev = NULL;
1318         }
1319
1320         /* Video Device: */
1321         if (usbvision->vdev) {
1322                 PDEBUG(DBG_PROBE, "unregister %s [v4l2]",
1323                        video_device_node_name(usbvision->vdev));
1324                 if (video_is_registered(usbvision->vdev))
1325                         video_unregister_device(usbvision->vdev);
1326                 else
1327                         video_device_release(usbvision->vdev);
1328                 usbvision->vdev = NULL;
1329         }
1330 }
1331
1332 /* register video4linux devices */
1333 static int __devinit usbvision_register_video(struct usb_usbvision *usbvision)
1334 {
1335         /* Video Device: */
1336         usbvision->vdev = usbvision_vdev_init(usbvision,
1337                                               &usbvision_video_template,
1338                                               "USBVision Video");
1339         if (usbvision->vdev == NULL)
1340                 goto err_exit;
1341         if (video_register_device(usbvision->vdev, VFL_TYPE_GRABBER, video_nr) < 0)
1342                 goto err_exit;
1343         printk(KERN_INFO "USBVision[%d]: registered USBVision Video device %s [v4l2]\n",
1344                usbvision->nr, video_device_node_name(usbvision->vdev));
1345
1346         /* Radio Device: */
1347         if (usbvision_device_data[usbvision->dev_model].radio) {
1348                 /* usbvision has radio */
1349                 usbvision->rdev = usbvision_vdev_init(usbvision,
1350                                                       &usbvision_radio_template,
1351                                                       "USBVision Radio");
1352                 if (usbvision->rdev == NULL)
1353                         goto err_exit;
1354                 if (video_register_device(usbvision->rdev, VFL_TYPE_RADIO, radio_nr) < 0)
1355                         goto err_exit;
1356                 printk(KERN_INFO "USBVision[%d]: registered USBVision Radio device %s [v4l2]\n",
1357                        usbvision->nr, video_device_node_name(usbvision->rdev));
1358         }
1359         /* all done */
1360         return 0;
1361
1362  err_exit:
1363         dev_err(&usbvision->dev->dev,
1364                 "USBVision[%d]: video_register_device() failed\n",
1365                         usbvision->nr);
1366         usbvision_unregister_video(usbvision);
1367         return -1;
1368 }
1369
1370 /*
1371  * usbvision_alloc()
1372  *
1373  * This code allocates the struct usb_usbvision.
1374  * It is filled with default values.
1375  *
1376  * Returns NULL on error, a pointer to usb_usbvision else.
1377  *
1378  */
1379 static struct usb_usbvision *usbvision_alloc(struct usb_device *dev,
1380                                              struct usb_interface *intf)
1381 {
1382         struct usb_usbvision *usbvision;
1383
1384         usbvision = kzalloc(sizeof(struct usb_usbvision), GFP_KERNEL);
1385         if (usbvision == NULL)
1386                 return NULL;
1387
1388         usbvision->dev = dev;
1389         if (v4l2_device_register(&intf->dev, &usbvision->v4l2_dev))
1390                 goto err_free;
1391
1392         mutex_init(&usbvision->v4l2_lock);
1393
1394         /* prepare control urb for control messages during interrupts */
1395         usbvision->ctrl_urb = usb_alloc_urb(USBVISION_URB_FRAMES, GFP_KERNEL);
1396         if (usbvision->ctrl_urb == NULL)
1397                 goto err_unreg;
1398         init_waitqueue_head(&usbvision->ctrl_urb_wq);
1399
1400         usbvision_init_power_off_timer(usbvision);
1401
1402         return usbvision;
1403
1404 err_unreg:
1405         v4l2_device_unregister(&usbvision->v4l2_dev);
1406 err_free:
1407         kfree(usbvision);
1408         return NULL;
1409 }
1410
1411 /*
1412  * usbvision_release()
1413  *
1414  * This code does final release of struct usb_usbvision. This happens
1415  * after the device is disconnected -and- all clients closed their files.
1416  *
1417  */
1418 static void usbvision_release(struct usb_usbvision *usbvision)
1419 {
1420         PDEBUG(DBG_PROBE, "");
1421
1422         usbvision_reset_power_off_timer(usbvision);
1423
1424         usbvision->initialized = 0;
1425
1426         usbvision_remove_sysfs(usbvision->vdev);
1427         usbvision_unregister_video(usbvision);
1428         kfree(usbvision->alt_max_pkt_size);
1429
1430         usb_free_urb(usbvision->ctrl_urb);
1431
1432         v4l2_device_unregister(&usbvision->v4l2_dev);
1433         kfree(usbvision);
1434
1435         PDEBUG(DBG_PROBE, "success");
1436 }
1437
1438
1439 /*********************** usb interface **********************************/
1440
1441 static void usbvision_configure_video(struct usb_usbvision *usbvision)
1442 {
1443         int model;
1444
1445         if (usbvision == NULL)
1446                 return;
1447
1448         model = usbvision->dev_model;
1449         usbvision->palette = usbvision_v4l2_format[2]; /* V4L2_PIX_FMT_RGB24; */
1450
1451         if (usbvision_device_data[usbvision->dev_model].vin_reg2_override) {
1452                 usbvision->vin_reg2_preset =
1453                         usbvision_device_data[usbvision->dev_model].vin_reg2;
1454         } else {
1455                 usbvision->vin_reg2_preset = 0;
1456         }
1457
1458         usbvision->tvnorm_id = usbvision_device_data[model].video_norm;
1459
1460         usbvision->video_inputs = usbvision_device_data[model].video_channels;
1461         usbvision->ctl_input = 0;
1462
1463         /* This should be here to make i2c clients to be able to register */
1464         /* first switch off audio */
1465         if (usbvision_device_data[model].audio_channels > 0)
1466                 usbvision_audio_off(usbvision);
1467         if (!power_on_at_open) {
1468                 /* and then power up the noisy tuner */
1469                 usbvision_power_on(usbvision);
1470                 usbvision_i2c_register(usbvision);
1471         }
1472 }
1473
1474 /*
1475  * usbvision_probe()
1476  *
1477  * This procedure queries device descriptor and accepts the interface
1478  * if it looks like USBVISION video device
1479  *
1480  */
1481 static int __devinit usbvision_probe(struct usb_interface *intf,
1482                                      const struct usb_device_id *devid)
1483 {
1484         struct usb_device *dev = usb_get_dev(interface_to_usbdev(intf));
1485         struct usb_interface *uif;
1486         __u8 ifnum = intf->altsetting->desc.bInterfaceNumber;
1487         const struct usb_host_interface *interface;
1488         struct usb_usbvision *usbvision = NULL;
1489         const struct usb_endpoint_descriptor *endpoint;
1490         int model, i, ret;
1491
1492         PDEBUG(DBG_PROBE, "VID=%#04x, PID=%#04x, ifnum=%u",
1493                                 dev->descriptor.idVendor,
1494                                 dev->descriptor.idProduct, ifnum);
1495
1496         model = devid->driver_info;
1497         if (model < 0 || model >= usbvision_device_data_size) {
1498                 PDEBUG(DBG_PROBE, "model out of bounds %d", model);
1499                 ret = -ENODEV;
1500                 goto err_usb;
1501         }
1502         printk(KERN_INFO "%s: %s found\n", __func__,
1503                                 usbvision_device_data[model].model_string);
1504
1505         if (usbvision_device_data[model].interface >= 0)
1506                 interface = &dev->actconfig->interface[usbvision_device_data[model].interface]->altsetting[0];
1507         else if (ifnum < dev->actconfig->desc.bNumInterfaces)
1508                 interface = &dev->actconfig->interface[ifnum]->altsetting[0];
1509         else {
1510                 dev_err(&intf->dev, "interface %d is invalid, max is %d\n",
1511                     ifnum, dev->actconfig->desc.bNumInterfaces - 1);
1512                 ret = -ENODEV;
1513                 goto err_usb;
1514         }
1515
1516         if (interface->desc.bNumEndpoints < 2) {
1517                 dev_err(&intf->dev, "interface %d has %d endpoints, but must"
1518                     " have minimum 2\n", ifnum, interface->desc.bNumEndpoints);
1519                 ret = -ENODEV;
1520                 goto err_usb;
1521         }
1522         endpoint = &interface->endpoint[1].desc;
1523
1524         if (!usb_endpoint_xfer_isoc(endpoint)) {
1525                 dev_err(&intf->dev, "%s: interface %d. has non-ISO endpoint!\n",
1526                     __func__, ifnum);
1527                 dev_err(&intf->dev, "%s: Endpoint attributes %d",
1528                     __func__, endpoint->bmAttributes);
1529                 ret = -ENODEV;
1530                 goto err_usb;
1531         }
1532         if (usb_endpoint_dir_out(endpoint)) {
1533                 dev_err(&intf->dev, "%s: interface %d. has ISO OUT endpoint!\n",
1534                     __func__, ifnum);
1535                 ret = -ENODEV;
1536                 goto err_usb;
1537         }
1538
1539         usbvision = usbvision_alloc(dev, intf);
1540         if (usbvision == NULL) {
1541                 dev_err(&intf->dev, "%s: couldn't allocate USBVision struct\n", __func__);
1542                 ret = -ENOMEM;
1543                 goto err_usb;
1544         }
1545
1546         if (dev->descriptor.bNumConfigurations > 1)
1547                 usbvision->bridge_type = BRIDGE_NT1004;
1548         else if (model == DAZZLE_DVC_90_REV_1_SECAM)
1549                 usbvision->bridge_type = BRIDGE_NT1005;
1550         else
1551                 usbvision->bridge_type = BRIDGE_NT1003;
1552         PDEBUG(DBG_PROBE, "bridge_type %d", usbvision->bridge_type);
1553
1554         /* compute alternate max packet sizes */
1555         uif = dev->actconfig->interface[0];
1556
1557         usbvision->num_alt = uif->num_altsetting;
1558         PDEBUG(DBG_PROBE, "Alternate settings: %i", usbvision->num_alt);
1559         usbvision->alt_max_pkt_size = kmalloc(32 * usbvision->num_alt, GFP_KERNEL);
1560         if (usbvision->alt_max_pkt_size == NULL) {
1561                 dev_err(&intf->dev, "usbvision: out of memory!\n");
1562                 ret = -ENOMEM;
1563                 goto err_pkt;
1564         }
1565
1566         for (i = 0; i < usbvision->num_alt; i++) {
1567                 u16 tmp = le16_to_cpu(uif->altsetting[i].endpoint[1].desc.
1568                                       wMaxPacketSize);
1569                 usbvision->alt_max_pkt_size[i] =
1570                         (tmp & 0x07ff) * (((tmp & 0x1800) >> 11) + 1);
1571                 PDEBUG(DBG_PROBE, "Alternate setting %i, max size= %i", i,
1572                        usbvision->alt_max_pkt_size[i]);
1573         }
1574
1575
1576         usbvision->nr = usbvision_nr++;
1577
1578         usbvision->have_tuner = usbvision_device_data[model].tuner;
1579         if (usbvision->have_tuner)
1580                 usbvision->tuner_type = usbvision_device_data[model].tuner_type;
1581
1582         usbvision->dev_model = model;
1583         usbvision->remove_pending = 0;
1584         usbvision->iface = ifnum;
1585         usbvision->iface_alt = 0;
1586         usbvision->video_endp = endpoint->bEndpointAddress;
1587         usbvision->isoc_packet_size = 0;
1588         usbvision->usb_bandwidth = 0;
1589         usbvision->user = 0;
1590         usbvision->streaming = stream_off;
1591         usbvision_configure_video(usbvision);
1592         usbvision_register_video(usbvision);
1593
1594         usbvision_create_sysfs(usbvision->vdev);
1595
1596         PDEBUG(DBG_PROBE, "success");
1597         return 0;
1598
1599 err_pkt:
1600         usbvision_release(usbvision);
1601 err_usb:
1602         usb_put_dev(dev);
1603         return ret;
1604 }
1605
1606
1607 /*
1608  * usbvision_disconnect()
1609  *
1610  * This procedure stops all driver activity, deallocates interface-private
1611  * structure (pointed by 'ptr') and after that driver should be removable
1612  * with no ill consequences.
1613  *
1614  */
1615 static void __devexit usbvision_disconnect(struct usb_interface *intf)
1616 {
1617         struct usb_usbvision *usbvision = to_usbvision(usb_get_intfdata(intf));
1618
1619         PDEBUG(DBG_PROBE, "");
1620
1621         if (usbvision == NULL) {
1622                 pr_err("%s: usb_get_intfdata() failed\n", __func__);
1623                 return;
1624         }
1625
1626         mutex_lock(&usbvision->v4l2_lock);
1627
1628         /* At this time we ask to cancel outstanding URBs */
1629         usbvision_stop_isoc(usbvision);
1630
1631         v4l2_device_disconnect(&usbvision->v4l2_dev);
1632
1633         if (usbvision->power) {
1634                 usbvision_i2c_unregister(usbvision);
1635                 usbvision_power_off(usbvision);
1636         }
1637         usbvision->remove_pending = 1;  /* Now all ISO data will be ignored */
1638
1639         usb_put_dev(usbvision->dev);
1640         usbvision->dev = NULL;  /* USB device is no more */
1641
1642         mutex_unlock(&usbvision->v4l2_lock);
1643
1644         if (usbvision->user) {
1645                 printk(KERN_INFO "%s: In use, disconnect pending\n",
1646                        __func__);
1647                 wake_up_interruptible(&usbvision->wait_frame);
1648                 wake_up_interruptible(&usbvision->wait_stream);
1649         } else {
1650                 usbvision_release(usbvision);
1651         }
1652
1653         PDEBUG(DBG_PROBE, "success");
1654 }
1655
1656 static struct usb_driver usbvision_driver = {
1657         .name           = "usbvision",
1658         .id_table       = usbvision_table,
1659         .probe          = usbvision_probe,
1660         .disconnect     = __devexit_p(usbvision_disconnect),
1661 };
1662
1663 /*
1664  * usbvision_init()
1665  *
1666  * This code is run to initialize the driver.
1667  *
1668  */
1669 static int __init usbvision_init(void)
1670 {
1671         int err_code;
1672
1673         PDEBUG(DBG_PROBE, "");
1674
1675         PDEBUG(DBG_IO,  "IO      debugging is enabled [video]");
1676         PDEBUG(DBG_PROBE, "PROBE   debugging is enabled [video]");
1677         PDEBUG(DBG_MMAP, "MMAP    debugging is enabled [video]");
1678
1679         /* disable planar mode support unless compression enabled */
1680         if (isoc_mode != ISOC_MODE_COMPRESS) {
1681                 /* FIXME : not the right way to set supported flag */
1682                 usbvision_v4l2_format[6].supported = 0; /* V4L2_PIX_FMT_YVU420 */
1683                 usbvision_v4l2_format[7].supported = 0; /* V4L2_PIX_FMT_YUV422P */
1684         }
1685
1686         err_code = usb_register(&usbvision_driver);
1687
1688         if (err_code == 0) {
1689                 printk(KERN_INFO DRIVER_DESC " : " USBVISION_VERSION_STRING "\n");
1690                 PDEBUG(DBG_PROBE, "success");
1691         }
1692         return err_code;
1693 }
1694
1695 static void __exit usbvision_exit(void)
1696 {
1697         PDEBUG(DBG_PROBE, "");
1698
1699         usb_deregister(&usbvision_driver);
1700         PDEBUG(DBG_PROBE, "success");
1701 }
1702
1703 module_init(usbvision_init);
1704 module_exit(usbvision_exit);
1705
1706 /*
1707  * Overrides for Emacs so that we follow Linus's tabbing style.
1708  * ---------------------------------------------------------------------------
1709  * Local variables:
1710  * c-basic-offset: 8
1711  * End:
1712  */