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KVM: Cleanup mark_page_dirty
[linux-2.6/btrfs-unstable.git] / drivers / media / video / vino.c
blob9a03dc82c6cae270db019cc0e749f929214c97f8
1 /*
2 * Driver for the VINO (Video In No Out) system found in SGI Indys.
3 *
4 * This file is subject to the terms and conditions of the GNU General Public
5 * License version 2 as published by the Free Software Foundation.
6 *
7 * Copyright (C) 2004,2005 Mikael Nousiainen <tmnousia@cc.hut.fi>
8 *
9 * Based on the previous version of the driver for 2.4 kernels by:
10 * Copyright (C) 2003 Ladislav Michl <ladis@linux-mips.org>
11 */
12
13 /*
14 * TODO:
15 * - remove "mark pages reserved-hacks" from memory allocation code
16 * and implement nopage()
17 * - check decimation, calculating and reporting image size when
18 * using decimation
19 * - implement read(), user mode buffers and overlay (?)
20 */
21
22 #include <linux/init.h>
23 #include <linux/module.h>
24 #include <linux/delay.h>
25 #include <linux/dma-mapping.h>
26 #include <linux/errno.h>
27 #include <linux/fs.h>
28 #include <linux/interrupt.h>
29 #include <linux/kernel.h>
30 #include <linux/mm.h>
31 #include <linux/time.h>
32 #include <linux/version.h>
33
34 #ifdef CONFIG_KMOD
35 #include <linux/kmod.h>
36 #endif
37
38 #include <linux/i2c.h>
39 #include <linux/i2c-algo-sgi.h>
40
41 #include <linux/videodev.h>
42 #include <media/v4l2-common.h>
43 #include <linux/video_decoder.h>
44 #include <linux/mutex.h>
45
46 #include <asm/paccess.h>
47 #include <asm/io.h>
48 #include <asm/sgi/ip22.h>
49 #include <asm/sgi/mc.h>
50
51 #include "vino.h"
52 #include "saa7191.h"
53 #include "indycam.h"
54
55 /* Uncomment the following line to get lots and lots of (mostly useless)
56 * debug info.
57 * Note that the debug output also slows down the driver significantly */
58 // #define VINO_DEBUG
59 // #define VINO_DEBUG_INT
60
61 #define VINO_MODULE_VERSION "0.0.5"
62 #define VINO_VERSION_CODE KERNEL_VERSION(0, 0, 5)
63
64 MODULE_DESCRIPTION("SGI VINO Video4Linux2 driver");
65 MODULE_VERSION(VINO_MODULE_VERSION);
66 MODULE_AUTHOR("Mikael Nousiainen <tmnousia@cc.hut.fi>");
67 MODULE_LICENSE("GPL");
68
69 #ifdef VINO_DEBUG
70 #define dprintk(x...) printk("VINO: " x);
71 #else
72 #define dprintk(x...)
73 #endif
74
75 #define VINO_NO_CHANNEL 0
76 #define VINO_CHANNEL_A 1
77 #define VINO_CHANNEL_B 2
78
79 #define VINO_PAL_WIDTH 768
80 #define VINO_PAL_HEIGHT 576
81 #define VINO_NTSC_WIDTH 640
82 #define VINO_NTSC_HEIGHT 480
83
84 #define VINO_MIN_WIDTH 32
85 #define VINO_MIN_HEIGHT 32
86
87 #define VINO_CLIPPING_START_ODD_D1 1
88 #define VINO_CLIPPING_START_ODD_PAL 15
89 #define VINO_CLIPPING_START_ODD_NTSC 12
90
91 #define VINO_CLIPPING_START_EVEN_D1 2
92 #define VINO_CLIPPING_START_EVEN_PAL 15
93 #define VINO_CLIPPING_START_EVEN_NTSC 12
94
95 #define VINO_INPUT_CHANNEL_COUNT 3
96
97 /* the number is the index for vino_inputs */
98 #define VINO_INPUT_NONE -1
99 #define VINO_INPUT_COMPOSITE 0
100 #define VINO_INPUT_SVIDEO 1
101 #define VINO_INPUT_D1 2
102
103 #define VINO_PAGE_RATIO (PAGE_SIZE / VINO_PAGE_SIZE)
104
105 #define VINO_FIFO_THRESHOLD_DEFAULT 16
106
107 #define VINO_FRAMEBUFFER_SIZE ((VINO_PAL_WIDTH \
108 * VINO_PAL_HEIGHT * 4 \
109 + 3 * PAGE_SIZE) & ~(PAGE_SIZE - 1))
110
111 #define VINO_FRAMEBUFFER_COUNT_MAX 8
112
113 #define VINO_FRAMEBUFFER_UNUSED 0
114 #define VINO_FRAMEBUFFER_IN_USE 1
115 #define VINO_FRAMEBUFFER_READY 2
116
117 #define VINO_QUEUE_ERROR -1
118 #define VINO_QUEUE_MAGIC 0x20050125
119
120 #define VINO_MEMORY_NONE 0
121 #define VINO_MEMORY_MMAP 1
122 #define VINO_MEMORY_USERPTR 2
123
124 #define VINO_DUMMY_DESC_COUNT 4
125 #define VINO_DESC_FETCH_DELAY 5 /* microseconds */
126
127 #define VINO_MAX_FRAME_SKIP_COUNT 128
128
129 /* the number is the index for vino_data_formats */
130 #define VINO_DATA_FMT_NONE -1
131 #define VINO_DATA_FMT_GREY 0
132 #define VINO_DATA_FMT_RGB332 1
133 #define VINO_DATA_FMT_RGB32 2
134 #define VINO_DATA_FMT_YUV 3
135
136 #define VINO_DATA_FMT_COUNT 4
137
138 /* the number is the index for vino_data_norms */
139 #define VINO_DATA_NORM_NONE -1
140 #define VINO_DATA_NORM_NTSC 0
141 #define VINO_DATA_NORM_PAL 1
142 #define VINO_DATA_NORM_SECAM 2
143 #define VINO_DATA_NORM_D1 3
144 /* The following are special entries that can be used to
145 * autodetect the norm. */
146 #define VINO_DATA_NORM_AUTO 0xfe
147 #define VINO_DATA_NORM_AUTO_EXT 0xff
148
149 #define VINO_DATA_NORM_COUNT 4
150
151 /* Internal data structure definitions */
152
153 struct vino_input {
154 char *name;
155 v4l2_std_id std;
156 };
157
158 struct vino_clipping {
159 unsigned int left, right, top, bottom;
160 };
161
162 struct vino_data_format {
163 /* the description */
164 char *description;
165 /* bytes per pixel */
166 unsigned int bpp;
167 /* V4L2 fourcc code */
168 __u32 pixelformat;
169 /* V4L2 colorspace (duh!) */
170 enum v4l2_colorspace colorspace;
171 };
172
173 struct vino_data_norm {
174 char *description;
175 unsigned int width, height;
176 struct vino_clipping odd;
177 struct vino_clipping even;
178
179 v4l2_std_id std;
180 unsigned int fps_min, fps_max;
181 __u32 framelines;
182 };
183
184 struct vino_descriptor_table {
185 /* the number of PAGE_SIZE sized pages in the buffer */
186 unsigned int page_count;
187 /* virtual (kmalloc'd) pointers to the actual data
188 * (in PAGE_SIZE chunks, used with mmap streaming) */
189 unsigned long *virtual;
190
191 /* cpu address for the VINO descriptor table
192 * (contains DMA addresses, VINO_PAGE_SIZE chunks) */
193 unsigned long *dma_cpu;
194 /* dma address for the VINO descriptor table
195 * (contains DMA addresses, VINO_PAGE_SIZE chunks) */
196 dma_addr_t dma;
197 };
198
199 struct vino_framebuffer {
200 /* identifier nubmer */
201 unsigned int id;
202 /* the length of the whole buffer */
203 unsigned int size;
204 /* the length of actual data in buffer */
205 unsigned int data_size;
206 /* the data format */
207 unsigned int data_format;
208 /* the state of buffer data */
209 unsigned int state;
210 /* is the buffer mapped in user space? */
211 unsigned int map_count;
212 /* memory offset for mmap() */
213 unsigned int offset;
214 /* frame counter */
215 unsigned int frame_counter;
216 /* timestamp (written when image capture finishes) */
217 struct timeval timestamp;
218
219 struct vino_descriptor_table desc_table;
220
221 spinlock_t state_lock;
222 };
223
224 struct vino_framebuffer_fifo {
225 unsigned int length;
226
227 unsigned int used;
228 unsigned int head;
229 unsigned int tail;
230
231 unsigned int data[VINO_FRAMEBUFFER_COUNT_MAX];
232 };
233
234 struct vino_framebuffer_queue {
235 unsigned int magic;
236
237 /* VINO_MEMORY_NONE, VINO_MEMORY_MMAP or VINO_MEMORY_USERPTR */
238 unsigned int type;
239 unsigned int length;
240
241 /* data field of in and out contain index numbers for buffer */
242 struct vino_framebuffer_fifo in;
243 struct vino_framebuffer_fifo out;
244
245 struct vino_framebuffer *buffer[VINO_FRAMEBUFFER_COUNT_MAX];
246
247 spinlock_t queue_lock;
248 struct mutex queue_mutex;
249 wait_queue_head_t frame_wait_queue;
250 };
251
252 struct vino_interrupt_data {
253 struct timeval timestamp;
254 unsigned int frame_counter;
255 unsigned int skip_count;
256 unsigned int skip;
257 };
258
259 struct vino_channel_settings {
260 unsigned int channel;
261
262 int input;
263 unsigned int data_format;
264 unsigned int data_norm;
265 struct vino_clipping clipping;
266 unsigned int decimation;
267 unsigned int line_size;
268 unsigned int alpha;
269 unsigned int fps;
270 unsigned int framert_reg;
271
272 unsigned int fifo_threshold;
273
274 struct vino_framebuffer_queue fb_queue;
275
276 /* number of the current field */
277 unsigned int field;
278
279 /* read in progress */
280 int reading;
281 /* streaming is active */
282 int streaming;
283 /* the driver is currently processing the queue */
284 int capturing;
285
286 struct mutex mutex;
287 spinlock_t capture_lock;
288
289 unsigned int users;
290
291 struct vino_interrupt_data int_data;
292
293 /* V4L support */
294 struct video_device *v4l_device;
295 };
296
297 struct vino_client {
298 /* the channel which owns this client:
299 * VINO_NO_CHANNEL, VINO_CHANNEL_A or VINO_CHANNEL_B */
300 unsigned int owner;
301 struct i2c_client *driver;
302 };
303
304 struct vino_settings {
305 struct vino_channel_settings a;
306 struct vino_channel_settings b;
307
308 struct vino_client decoder;
309 struct vino_client camera;
310
311 /* a lock for vino register access */
312 spinlock_t vino_lock;
313 /* a lock for channel input changes */
314 spinlock_t input_lock;
315
316 unsigned long dummy_page;
317 struct vino_descriptor_table dummy_desc_table;
318 };
319
320 /* Module parameters */
321
322 /*
323 * Using vino_pixel_conversion the ABGR32-format pixels supplied
324 * by the VINO chip can be converted to more common formats
325 * like RGBA32 (or probably RGB24 in the future). This way we
326 * can give out data that can be specified correctly with
327 * the V4L2-definitions.
328 *
329 * The pixel format is specified as RGBA32 when no conversion
330 * is used.
331 *
332 * Note that this only affects the 32-bit bit depth.
333 *
334 * Use non-zero value to enable conversion.
335 */
336 static int vino_pixel_conversion = 0;
337
338 module_param_named(pixelconv, vino_pixel_conversion, int, 0);
339
340 MODULE_PARM_DESC(pixelconv,
341 "enable pixel conversion (non-zero value enables)");
342
343 /* Internal data structures */
344
345 static struct sgi_vino *vino;
346
347 static struct vino_settings *vino_drvdata;
348
349 static const char *vino_driver_name = "vino";
350 static const char *vino_driver_description = "SGI VINO";
351 static const char *vino_bus_name = "GIO64 bus";
352 static const char *vino_v4l_device_name_a = "SGI VINO Channel A";
353 static const char *vino_v4l_device_name_b = "SGI VINO Channel B";
354
355 static void vino_capture_tasklet(unsigned long channel);
356
357 DECLARE_TASKLET(vino_tasklet_a, vino_capture_tasklet, VINO_CHANNEL_A);
358 DECLARE_TASKLET(vino_tasklet_b, vino_capture_tasklet, VINO_CHANNEL_B);
359
360 static const struct vino_input vino_inputs[] = {
361 {
362 .name = "Composite",
363 .std = V4L2_STD_NTSC | V4L2_STD_PAL
364 | V4L2_STD_SECAM,
365 },{
366 .name = "S-Video",
367 .std = V4L2_STD_NTSC | V4L2_STD_PAL
368 | V4L2_STD_SECAM,
369 },{
370 .name = "D1/IndyCam",
371 .std = V4L2_STD_NTSC,
372 }
373 };
374
375 static const struct vino_data_format vino_data_formats[] = {
376 {
377 .description = "8-bit greyscale",
378 .bpp = 1,
379 .pixelformat = V4L2_PIX_FMT_GREY,
380 .colorspace = V4L2_COLORSPACE_SMPTE170M,
381 },{
382 .description = "8-bit dithered RGB 3-3-2",
383 .bpp = 1,
384 .pixelformat = V4L2_PIX_FMT_RGB332,
385 .colorspace = V4L2_COLORSPACE_SRGB,
386 },{
387 .description = "32-bit RGB",
388 .bpp = 4,
389 .pixelformat = V4L2_PIX_FMT_RGB32,
390 .colorspace = V4L2_COLORSPACE_SRGB,
391 },{
392 .description = "YUV 4:2:2",
393 .bpp = 2,
394 .pixelformat = V4L2_PIX_FMT_YUYV, // XXX: swapped?
395 .colorspace = V4L2_COLORSPACE_SMPTE170M,
396 }
397 };
398
399 static const struct vino_data_norm vino_data_norms[] = {
400 {
401 .description = "NTSC",
402 .std = V4L2_STD_NTSC,
403 .fps_min = 6,
404 .fps_max = 30,
405 .framelines = 525,
406 .width = VINO_NTSC_WIDTH,
407 .height = VINO_NTSC_HEIGHT,
408 .odd = {
409 .top = VINO_CLIPPING_START_ODD_NTSC,
410 .left = 0,
411 .bottom = VINO_CLIPPING_START_ODD_NTSC
412 + VINO_NTSC_HEIGHT / 2 - 1,
413 .right = VINO_NTSC_WIDTH,
414 },
415 .even = {
416 .top = VINO_CLIPPING_START_EVEN_NTSC,
417 .left = 0,
418 .bottom = VINO_CLIPPING_START_EVEN_NTSC
419 + VINO_NTSC_HEIGHT / 2 - 1,
420 .right = VINO_NTSC_WIDTH,
421 },
422 },{
423 .description = "PAL",
424 .std = V4L2_STD_PAL,
425 .fps_min = 5,
426 .fps_max = 25,
427 .framelines = 625,
428 .width = VINO_PAL_WIDTH,
429 .height = VINO_PAL_HEIGHT,
430 .odd = {
431 .top = VINO_CLIPPING_START_ODD_PAL,
432 .left = 0,
433 .bottom = VINO_CLIPPING_START_ODD_PAL
434 + VINO_PAL_HEIGHT / 2 - 1,
435 .right = VINO_PAL_WIDTH,
436 },
437 .even = {
438 .top = VINO_CLIPPING_START_EVEN_PAL,
439 .left = 0,
440 .bottom = VINO_CLIPPING_START_EVEN_PAL
441 + VINO_PAL_HEIGHT / 2 - 1,
442 .right = VINO_PAL_WIDTH,
443 },
444 },{
445 .description = "SECAM",
446 .std = V4L2_STD_SECAM,
447 .fps_min = 5,
448 .fps_max = 25,
449 .framelines = 625,
450 .width = VINO_PAL_WIDTH,
451 .height = VINO_PAL_HEIGHT,
452 .odd = {
453 .top = VINO_CLIPPING_START_ODD_PAL,
454 .left = 0,
455 .bottom = VINO_CLIPPING_START_ODD_PAL
456 + VINO_PAL_HEIGHT / 2 - 1,
457 .right = VINO_PAL_WIDTH,
458 },
459 .even = {
460 .top = VINO_CLIPPING_START_EVEN_PAL,
461 .left = 0,
462 .bottom = VINO_CLIPPING_START_EVEN_PAL
463 + VINO_PAL_HEIGHT / 2 - 1,
464 .right = VINO_PAL_WIDTH,
465 },
466 },{
467 .description = "NTSC/D1",
468 .std = V4L2_STD_NTSC,
469 .fps_min = 6,
470 .fps_max = 30,
471 .framelines = 525,
472 .width = VINO_NTSC_WIDTH,
473 .height = VINO_NTSC_HEIGHT,
474 .odd = {
475 .top = VINO_CLIPPING_START_ODD_D1,
476 .left = 0,
477 .bottom = VINO_CLIPPING_START_ODD_D1
478 + VINO_NTSC_HEIGHT / 2 - 1,
479 .right = VINO_NTSC_WIDTH,
480 },
481 .even = {
482 .top = VINO_CLIPPING_START_EVEN_D1,
483 .left = 0,
484 .bottom = VINO_CLIPPING_START_EVEN_D1
485 + VINO_NTSC_HEIGHT / 2 - 1,
486 .right = VINO_NTSC_WIDTH,
487 },
488 }
489 };
490
491 #define VINO_INDYCAM_V4L2_CONTROL_COUNT 9
492
493 struct v4l2_queryctrl vino_indycam_v4l2_controls[] = {
494 {
495 .id = V4L2_CID_AUTOGAIN,
496 .type = V4L2_CTRL_TYPE_BOOLEAN,
497 .name = "Automatic Gain Control",
498 .minimum = 0,
499 .maximum = 1,
500 .step = 1,
501 .default_value = INDYCAM_AGC_DEFAULT,
502 .flags = 0,
503 .reserved = { INDYCAM_CONTROL_AGC, 0 },
504 },{
505 .id = V4L2_CID_AUTO_WHITE_BALANCE,
506 .type = V4L2_CTRL_TYPE_BOOLEAN,
507 .name = "Automatic White Balance",
508 .minimum = 0,
509 .maximum = 1,
510 .step = 1,
511 .default_value = INDYCAM_AWB_DEFAULT,
512 .flags = 0,
513 .reserved = { INDYCAM_CONTROL_AWB, 0 },
514 },{
515 .id = V4L2_CID_GAIN,
516 .type = V4L2_CTRL_TYPE_INTEGER,
517 .name = "Gain",
518 .minimum = INDYCAM_GAIN_MIN,
519 .maximum = INDYCAM_GAIN_MAX,
520 .step = 1,
521 .default_value = INDYCAM_GAIN_DEFAULT,
522 .flags = 0,
523 .reserved = { INDYCAM_CONTROL_GAIN, 0 },
524 },{
525 .id = V4L2_CID_PRIVATE_BASE,
526 .type = V4L2_CTRL_TYPE_INTEGER,
527 .name = "Red Saturation",
528 .minimum = INDYCAM_RED_SATURATION_MIN,
529 .maximum = INDYCAM_RED_SATURATION_MAX,
530 .step = 1,
531 .default_value = INDYCAM_RED_SATURATION_DEFAULT,
532 .flags = 0,
533 .reserved = { INDYCAM_CONTROL_RED_SATURATION, 0 },
534 },{
535 .id = V4L2_CID_PRIVATE_BASE + 1,
536 .type = V4L2_CTRL_TYPE_INTEGER,
537 .name = "Blue Saturation",
538 .minimum = INDYCAM_BLUE_SATURATION_MIN,
539 .maximum = INDYCAM_BLUE_SATURATION_MAX,
540 .step = 1,
541 .default_value = INDYCAM_BLUE_SATURATION_DEFAULT,
542 .flags = 0,
543 .reserved = { INDYCAM_CONTROL_BLUE_SATURATION, 0 },
544 },{
545 .id = V4L2_CID_RED_BALANCE,
546 .type = V4L2_CTRL_TYPE_INTEGER,
547 .name = "Red Balance",
548 .minimum = INDYCAM_RED_BALANCE_MIN,
549 .maximum = INDYCAM_RED_BALANCE_MAX,
550 .step = 1,
551 .default_value = INDYCAM_RED_BALANCE_DEFAULT,
552 .flags = 0,
553 .reserved = { INDYCAM_CONTROL_RED_BALANCE, 0 },
554 },{
555 .id = V4L2_CID_BLUE_BALANCE,
556 .type = V4L2_CTRL_TYPE_INTEGER,
557 .name = "Blue Balance",
558 .minimum = INDYCAM_BLUE_BALANCE_MIN,
559 .maximum = INDYCAM_BLUE_BALANCE_MAX,
560 .step = 1,
561 .default_value = INDYCAM_BLUE_BALANCE_DEFAULT,
562 .flags = 0,
563 .reserved = { INDYCAM_CONTROL_BLUE_BALANCE, 0 },
564 },{
565 .id = V4L2_CID_EXPOSURE,
566 .type = V4L2_CTRL_TYPE_INTEGER,
567 .name = "Shutter Control",
568 .minimum = INDYCAM_SHUTTER_MIN,
569 .maximum = INDYCAM_SHUTTER_MAX,
570 .step = 1,
571 .default_value = INDYCAM_SHUTTER_DEFAULT,
572 .flags = 0,
573 .reserved = { INDYCAM_CONTROL_SHUTTER, 0 },
574 },{
575 .id = V4L2_CID_GAMMA,
576 .type = V4L2_CTRL_TYPE_INTEGER,
577 .name = "Gamma",
578 .minimum = INDYCAM_GAMMA_MIN,
579 .maximum = INDYCAM_GAMMA_MAX,
580 .step = 1,
581 .default_value = INDYCAM_GAMMA_DEFAULT,
582 .flags = 0,
583 .reserved = { INDYCAM_CONTROL_GAMMA, 0 },
584 }
585 };
586
587 #define VINO_SAA7191_V4L2_CONTROL_COUNT 9
588
589 struct v4l2_queryctrl vino_saa7191_v4l2_controls[] = {
590 {
591 .id = V4L2_CID_HUE,
592 .type = V4L2_CTRL_TYPE_INTEGER,
593 .name = "Hue",
594 .minimum = SAA7191_HUE_MIN,
595 .maximum = SAA7191_HUE_MAX,
596 .step = 1,
597 .default_value = SAA7191_HUE_DEFAULT,
598 .flags = 0,
599 .reserved = { SAA7191_CONTROL_HUE, 0 },
600 },{
601 .id = V4L2_CID_PRIVATE_BASE,
602 .type = V4L2_CTRL_TYPE_INTEGER,
603 .name = "Luminance Bandpass",
604 .minimum = SAA7191_BANDPASS_MIN,
605 .maximum = SAA7191_BANDPASS_MAX,
606 .step = 1,
607 .default_value = SAA7191_BANDPASS_DEFAULT,
608 .flags = 0,
609 .reserved = { SAA7191_CONTROL_BANDPASS, 0 },
610 },{
611 .id = V4L2_CID_PRIVATE_BASE + 1,
612 .type = V4L2_CTRL_TYPE_INTEGER,
613 .name = "Luminance Bandpass Weight",
614 .minimum = SAA7191_BANDPASS_WEIGHT_MIN,
615 .maximum = SAA7191_BANDPASS_WEIGHT_MAX,
616 .step = 1,
617 .default_value = SAA7191_BANDPASS_WEIGHT_DEFAULT,
618 .flags = 0,
619 .reserved = { SAA7191_CONTROL_BANDPASS_WEIGHT, 0 },
620 },{
621 .id = V4L2_CID_PRIVATE_BASE + 2,
622 .type = V4L2_CTRL_TYPE_INTEGER,
623 .name = "HF Luminance Coring",
624 .minimum = SAA7191_CORING_MIN,
625 .maximum = SAA7191_CORING_MAX,
626 .step = 1,
627 .default_value = SAA7191_CORING_DEFAULT,
628 .flags = 0,
629 .reserved = { SAA7191_CONTROL_CORING, 0 },
630 },{
631 .id = V4L2_CID_PRIVATE_BASE + 3,
632 .type = V4L2_CTRL_TYPE_BOOLEAN,
633 .name = "Force Colour",
634 .minimum = SAA7191_FORCE_COLOUR_MIN,
635 .maximum = SAA7191_FORCE_COLOUR_MAX,
636 .step = 1,
637 .default_value = SAA7191_FORCE_COLOUR_DEFAULT,
638 .flags = 0,
639 .reserved = { SAA7191_CONTROL_FORCE_COLOUR, 0 },
640 },{
641 .id = V4L2_CID_PRIVATE_BASE + 4,
642 .type = V4L2_CTRL_TYPE_INTEGER,
643 .name = "Chrominance Gain Control",
644 .minimum = SAA7191_CHROMA_GAIN_MIN,
645 .maximum = SAA7191_CHROMA_GAIN_MAX,
646 .step = 1,
647 .default_value = SAA7191_CHROMA_GAIN_DEFAULT,
648 .flags = 0,
649 .reserved = { SAA7191_CONTROL_CHROMA_GAIN, 0 },
650 },{
651 .id = V4L2_CID_PRIVATE_BASE + 5,
652 .type = V4L2_CTRL_TYPE_BOOLEAN,
653 .name = "VTR Time Constant",
654 .minimum = SAA7191_VTRC_MIN,
655 .maximum = SAA7191_VTRC_MAX,
656 .step = 1,
657 .default_value = SAA7191_VTRC_DEFAULT,
658 .flags = 0,
659 .reserved = { SAA7191_CONTROL_VTRC, 0 },
660 },{
661 .id = V4L2_CID_PRIVATE_BASE + 6,
662 .type = V4L2_CTRL_TYPE_INTEGER,
663 .name = "Luminance Delay Compensation",
664 .minimum = SAA7191_LUMA_DELAY_MIN,
665 .maximum = SAA7191_LUMA_DELAY_MAX,
666 .step = 1,
667 .default_value = SAA7191_LUMA_DELAY_DEFAULT,
668 .flags = 0,
669 .reserved = { SAA7191_CONTROL_LUMA_DELAY, 0 },
670 },{
671 .id = V4L2_CID_PRIVATE_BASE + 7,
672 .type = V4L2_CTRL_TYPE_INTEGER,
673 .name = "Vertical Noise Reduction",
674 .minimum = SAA7191_VNR_MIN,
675 .maximum = SAA7191_VNR_MAX,
676 .step = 1,
677 .default_value = SAA7191_VNR_DEFAULT,
678 .flags = 0,
679 .reserved = { SAA7191_CONTROL_VNR, 0 },
680 }
681 };
682
683 /* VINO I2C bus functions */
684
685 unsigned i2c_vino_getctrl(void *data)
686 {
687 return vino->i2c_control;
688 }
689
690 void i2c_vino_setctrl(void *data, unsigned val)
691 {
692 vino->i2c_control = val;
693 }
694
695 unsigned i2c_vino_rdata(void *data)
696 {
697 return vino->i2c_data;
698 }
699
700 void i2c_vino_wdata(void *data, unsigned val)
701 {
702 vino->i2c_data = val;
703 }
704
705 static struct i2c_algo_sgi_data i2c_sgi_vino_data =
706 {
707 .getctrl = &i2c_vino_getctrl,
708 .setctrl = &i2c_vino_setctrl,
709 .rdata = &i2c_vino_rdata,
710 .wdata = &i2c_vino_wdata,
711 .xfer_timeout = 200,
712 .ack_timeout = 1000,
713 };
714
715 /*
716 * There are two possible clients on VINO I2C bus, so we limit usage only
717 * to them.
718 */
719 static int i2c_vino_client_reg(struct i2c_client *client)
720 {
721 unsigned long flags;
722 int ret = 0;
723
724 spin_lock_irqsave(&vino_drvdata->input_lock, flags);
725 switch (client->driver->id) {
726 case I2C_DRIVERID_SAA7191:
727 if (vino_drvdata->decoder.driver)
728 ret = -EBUSY;
729 else
730 vino_drvdata->decoder.driver = client;
731 break;
732 case I2C_DRIVERID_INDYCAM:
733 if (vino_drvdata->camera.driver)
734 ret = -EBUSY;
735 else
736 vino_drvdata->camera.driver = client;
737 break;
738 default:
739 ret = -ENODEV;
740 }
741 spin_unlock_irqrestore(&vino_drvdata->input_lock, flags);
742
743 return ret;
744 }
745
746 static int i2c_vino_client_unreg(struct i2c_client *client)
747 {
748 unsigned long flags;
749 int ret = 0;
750
751 spin_lock_irqsave(&vino_drvdata->input_lock, flags);
752 if (client == vino_drvdata->decoder.driver) {
753 if (vino_drvdata->decoder.owner != VINO_NO_CHANNEL)
754 ret = -EBUSY;
755 else
756 vino_drvdata->decoder.driver = NULL;
757 } else if (client == vino_drvdata->camera.driver) {
758 if (vino_drvdata->camera.owner != VINO_NO_CHANNEL)
759 ret = -EBUSY;
760 else
761 vino_drvdata->camera.driver = NULL;
762 }
763 spin_unlock_irqrestore(&vino_drvdata->input_lock, flags);
764
765 return ret;
766 }
767
768 static struct i2c_adapter vino_i2c_adapter =
769 {
770 .name = "VINO I2C bus",
771 .id = I2C_HW_SGI_VINO,
772 .algo_data = &i2c_sgi_vino_data,
773 .client_register = &i2c_vino_client_reg,
774 .client_unregister = &i2c_vino_client_unreg,
775 };
776
777 static int vino_i2c_add_bus(void)
778 {
779 return i2c_sgi_add_bus(&vino_i2c_adapter);
780 }
781
782 static int vino_i2c_del_bus(void)
783 {
784 return i2c_del_adapter(&vino_i2c_adapter);
785 }
786
787 static int i2c_camera_command(unsigned int cmd, void *arg)
788 {
789 return vino_drvdata->camera.driver->
790 driver->command(vino_drvdata->camera.driver,
791 cmd, arg);
792 }
793
794 static int i2c_decoder_command(unsigned int cmd, void *arg)
795 {
796 return vino_drvdata->decoder.driver->
797 driver->command(vino_drvdata->decoder.driver,
798 cmd, arg);
799 }
800
801 /* VINO framebuffer/DMA descriptor management */
802
803 static void vino_free_buffer_with_count(struct vino_framebuffer *fb,
804 unsigned int count)
805 {
806 unsigned int i;
807
808 dprintk("vino_free_buffer_with_count(): count = %d\n", count);
809
810 for (i = 0; i < count; i++) {
811 ClearPageReserved(virt_to_page(fb->desc_table.virtual[i]));
812 dma_unmap_single(NULL,
813 fb->desc_table.dma_cpu[VINO_PAGE_RATIO * i],
814 PAGE_SIZE, DMA_FROM_DEVICE);
815 free_page(fb->desc_table.virtual[i]);
816 }
817
818 dma_free_coherent(NULL,
819 VINO_PAGE_RATIO * (fb->desc_table.page_count + 4) *
820 sizeof(dma_addr_t), (void *)fb->desc_table.dma_cpu,
821 fb->desc_table.dma);
822 kfree(fb->desc_table.virtual);
823
824 memset(fb, 0, sizeof(struct vino_framebuffer));
825 }
826
827 static void vino_free_buffer(struct vino_framebuffer *fb)
828 {
829 vino_free_buffer_with_count(fb, fb->desc_table.page_count);
830 }
831
832 static int vino_allocate_buffer(struct vino_framebuffer *fb,
833 unsigned int size)
834 {
835 unsigned int count, i, j;
836 int ret = 0;
837
838 dprintk("vino_allocate_buffer():\n");
839
840 if (size < 1)
841 return -EINVAL;
842
843 memset(fb, 0, sizeof(struct vino_framebuffer));
844
845 count = ((size / PAGE_SIZE) + 4) & ~3;
846
847 dprintk("vino_allocate_buffer(): size = %d, count = %d\n",
848 size, count);
849
850 /* allocate memory for table with virtual (page) addresses */
851 fb->desc_table.virtual = (unsigned long *)
852 kmalloc(count * sizeof(unsigned long), GFP_KERNEL);
853 if (!fb->desc_table.virtual)
854 return -ENOMEM;
855
856 /* allocate memory for table with dma addresses
857 * (has space for four extra descriptors) */
858 fb->desc_table.dma_cpu =
859 dma_alloc_coherent(NULL, VINO_PAGE_RATIO * (count + 4) *
860 sizeof(dma_addr_t), &fb->desc_table.dma,
861 GFP_KERNEL | GFP_DMA);
862 if (!fb->desc_table.dma_cpu) {
863 ret = -ENOMEM;
864 goto out_free_virtual;
865 }
866
867 /* allocate pages for the buffer and acquire the according
868 * dma addresses */
869 for (i = 0; i < count; i++) {
870 dma_addr_t dma_data_addr;
871
872 fb->desc_table.virtual[i] =
873 get_zeroed_page(GFP_KERNEL | GFP_DMA);
874 if (!fb->desc_table.virtual[i]) {
875 ret = -ENOBUFS;
876 break;
877 }
878
879 dma_data_addr =
880 dma_map_single(NULL,
881 (void *)fb->desc_table.virtual[i],
882 PAGE_SIZE, DMA_FROM_DEVICE);
883
884 for (j = 0; j < VINO_PAGE_RATIO; j++) {
885 fb->desc_table.dma_cpu[VINO_PAGE_RATIO * i + j] =
886 dma_data_addr + VINO_PAGE_SIZE * j;
887 }
888
889 SetPageReserved(virt_to_page(fb->desc_table.virtual[i]));
890 }
891
892 /* page_count needs to be set anyway, because the descriptor table has
893 * been allocated according to this number */
894 fb->desc_table.page_count = count;
895
896 if (ret) {
897 /* the descriptor with index i doesn't contain
898 * a valid address yet */
899 vino_free_buffer_with_count(fb, i);
900 return ret;
901 }
902
903 //fb->size = size;
904 fb->size = count * PAGE_SIZE;
905 fb->data_format = VINO_DATA_FMT_NONE;
906
907 /* set the dma stop-bit for the last (count+1)th descriptor */
908 fb->desc_table.dma_cpu[VINO_PAGE_RATIO * count] = VINO_DESC_STOP;
909 return 0;
910
911 out_free_virtual:
912 kfree(fb->desc_table.virtual);
913 return ret;
914 }
915
916 #if 0
917 /* user buffers not fully implemented yet */
918 static int vino_prepare_user_buffer(struct vino_framebuffer *fb,
919 void *user,
920 unsigned int size)
921 {
922 unsigned int count, i, j;
923 int ret = 0;
924
925 dprintk("vino_prepare_user_buffer():\n");
926
927 if (size < 1)
928 return -EINVAL;
929
930 memset(fb, 0, sizeof(struct vino_framebuffer));
931
932 count = ((size / PAGE_SIZE)) & ~3;
933
934 dprintk("vino_prepare_user_buffer(): size = %d, count = %d\n",
935 size, count);
936
937 /* allocate memory for table with virtual (page) addresses */
938 fb->desc_table.virtual = (unsigned long *)
939 kmalloc(count * sizeof(unsigned long), GFP_KERNEL);
940 if (!fb->desc_table.virtual)
941 return -ENOMEM;
942
943 /* allocate memory for table with dma addresses
944 * (has space for four extra descriptors) */
945 fb->desc_table.dma_cpu =
946 dma_alloc_coherent(NULL, VINO_PAGE_RATIO * (count + 4) *
947 sizeof(dma_addr_t), &fb->desc_table.dma,
948 GFP_KERNEL | GFP_DMA);
949 if (!fb->desc_table.dma_cpu) {
950 ret = -ENOMEM;
951 goto out_free_virtual;
952 }
953
954 /* allocate pages for the buffer and acquire the according
955 * dma addresses */
956 for (i = 0; i < count; i++) {
957 dma_addr_t dma_data_addr;
958
959 fb->desc_table.virtual[i] =
960 get_zeroed_page(GFP_KERNEL | GFP_DMA);
961 if (!fb->desc_table.virtual[i]) {
962 ret = -ENOBUFS;
963 break;
964 }
965
966 dma_data_addr =
967 dma_map_single(NULL,
968 (void *)fb->desc_table.virtual[i],
969 PAGE_SIZE, DMA_FROM_DEVICE);
970
971 for (j = 0; j < VINO_PAGE_RATIO; j++) {
972 fb->desc_table.dma_cpu[VINO_PAGE_RATIO * i + j] =
973 dma_data_addr + VINO_PAGE_SIZE * j;
974 }
975
976 SetPageReserved(virt_to_page(fb->desc_table.virtual[i]));
977 }
978
979 /* page_count needs to be set anyway, because the descriptor table has
980 * been allocated according to this number */
981 fb->desc_table.page_count = count;
982
983 if (ret) {
984 /* the descriptor with index i doesn't contain
985 * a valid address yet */
986 vino_free_buffer_with_count(fb, i);
987 return ret;
988 }
989
990 //fb->size = size;
991 fb->size = count * PAGE_SIZE;
992
993 /* set the dma stop-bit for the last (count+1)th descriptor */
994 fb->desc_table.dma_cpu[VINO_PAGE_RATIO * count] = VINO_DESC_STOP;
995 return 0;
996
997 out_free_virtual:
998 kfree(fb->desc_table.virtual);
999 return ret;
1000 }
1001 #endif
1002
1003 static void vino_sync_buffer(struct vino_framebuffer *fb)
1004 {
1005 int i;
1006
1007 dprintk("vino_sync_buffer():\n");
1008
1009 for (i = 0; i < fb->desc_table.page_count; i++)
1010 dma_sync_single(NULL,
1011 fb->desc_table.dma_cpu[VINO_PAGE_RATIO * i],
1012 PAGE_SIZE, DMA_FROM_DEVICE);
1013 }
1014
1015 /* Framebuffer fifo functions (need to be locked externally) */
1016
1017 static inline void vino_fifo_init(struct vino_framebuffer_fifo *f,
1018 unsigned int length)
1019 {
1020 f->length = 0;
1021 f->used = 0;
1022 f->head = 0;
1023 f->tail = 0;
1024
1025 if (length > VINO_FRAMEBUFFER_COUNT_MAX)
1026 length = VINO_FRAMEBUFFER_COUNT_MAX;
1027
1028 f->length = length;
1029 }
1030
1031 /* returns true/false */
1032 static inline int vino_fifo_has_id(struct vino_framebuffer_fifo *f,
1033 unsigned int id)
1034 {
1035 unsigned int i;
1036
1037 for (i = f->head; i == (f->tail - 1); i = (i + 1) % f->length) {
1038 if (f->data[i] == id)
1039 return 1;
1040 }
1041
1042 return 0;
1043 }
1044
1045 #if 0
1046 /* returns true/false */
1047 static inline int vino_fifo_full(struct vino_framebuffer_fifo *f)
1048 {
1049 return (f->used == f->length);
1050 }
1051 #endif
1052
1053 static inline unsigned int vino_fifo_get_used(struct vino_framebuffer_fifo *f)
1054 {
1055 return f->used;
1056 }
1057
1058 static int vino_fifo_enqueue(struct vino_framebuffer_fifo *f, unsigned int id)
1059 {
1060 if (id >= f->length) {
1061 return VINO_QUEUE_ERROR;
1062 }
1063
1064 if (vino_fifo_has_id(f, id)) {
1065 return VINO_QUEUE_ERROR;
1066 }
1067
1068 if (f->used < f->length) {
1069 f->data[f->tail] = id;
1070 f->tail = (f->tail + 1) % f->length;
1071 f->used++;
1072 } else {
1073 return VINO_QUEUE_ERROR;
1074 }
1075
1076 return 0;
1077 }
1078
1079 static int vino_fifo_peek(struct vino_framebuffer_fifo *f, unsigned int *id)
1080 {
1081 if (f->used > 0) {
1082 *id = f->data[f->head];
1083 } else {
1084 return VINO_QUEUE_ERROR;
1085 }
1086
1087 return 0;
1088 }
1089
1090 static int vino_fifo_dequeue(struct vino_framebuffer_fifo *f, unsigned int *id)
1091 {
1092 if (f->used > 0) {
1093 *id = f->data[f->head];
1094 f->head = (f->head + 1) % f->length;
1095 f->used--;
1096 } else {
1097 return VINO_QUEUE_ERROR;
1098 }
1099
1100 return 0;
1101 }
1102
1103 /* Framebuffer queue functions */
1104
1105 /* execute with queue_lock locked */
1106 static void vino_queue_free_with_count(struct vino_framebuffer_queue *q,
1107 unsigned int length)
1108 {
1109 unsigned int i;
1110
1111 q->length = 0;
1112 memset(&q->in, 0, sizeof(struct vino_framebuffer_fifo));
1113 memset(&q->out, 0, sizeof(struct vino_framebuffer_fifo));
1114 for (i = 0; i < length; i++) {
1115 dprintk("vino_queue_free_with_count(): freeing buffer %d\n",
1116 i);
1117 vino_free_buffer(q->buffer[i]);
1118 kfree(q->buffer[i]);
1119 }
1120
1121 q->type = VINO_MEMORY_NONE;
1122 q->magic = 0;
1123 }
1124
1125 static void vino_queue_free(struct vino_framebuffer_queue *q)
1126 {
1127 dprintk("vino_queue_free():\n");
1128
1129 if (q->magic != VINO_QUEUE_MAGIC)
1130 return;
1131 if (q->type != VINO_MEMORY_MMAP)
1132 return;
1133
1134 mutex_lock(&q->queue_mutex);
1135
1136 vino_queue_free_with_count(q, q->length);
1137
1138 mutex_unlock(&q->queue_mutex);
1139 }
1140
1141 static int vino_queue_init(struct vino_framebuffer_queue *q,
1142 unsigned int *length)
1143 {
1144 unsigned int i;
1145 int ret = 0;
1146
1147 dprintk("vino_queue_init(): length = %d\n", *length);
1148
1149 if (q->magic == VINO_QUEUE_MAGIC) {
1150 dprintk("vino_queue_init(): queue already initialized!\n");
1151 return -EINVAL;
1152 }
1153
1154 if (q->type != VINO_MEMORY_NONE) {
1155 dprintk("vino_queue_init(): queue already initialized!\n");
1156 return -EINVAL;
1157 }
1158
1159 if (*length < 1)
1160 return -EINVAL;
1161
1162 mutex_lock(&q->queue_mutex);
1163
1164 if (*length > VINO_FRAMEBUFFER_COUNT_MAX)
1165 *length = VINO_FRAMEBUFFER_COUNT_MAX;
1166
1167 q->length = 0;
1168
1169 for (i = 0; i < *length; i++) {
1170 dprintk("vino_queue_init(): allocating buffer %d\n", i);
1171 q->buffer[i] = kmalloc(sizeof(struct vino_framebuffer),
1172 GFP_KERNEL);
1173 if (!q->buffer[i]) {
1174 dprintk("vino_queue_init(): kmalloc() failed\n");
1175 ret = -ENOMEM;
1176 break;
1177 }
1178
1179 ret = vino_allocate_buffer(q->buffer[i],
1180 VINO_FRAMEBUFFER_SIZE);
1181 if (ret) {
1182 kfree(q->buffer[i]);
1183 dprintk("vino_queue_init(): "
1184 "vino_allocate_buffer() failed\n");
1185 break;
1186 }
1187
1188 q->buffer[i]->id = i;
1189 if (i > 0) {
1190 q->buffer[i]->offset = q->buffer[i - 1]->offset +
1191 q->buffer[i - 1]->size;
1192 } else {
1193 q->buffer[i]->offset = 0;
1194 }
1195
1196 spin_lock_init(&q->buffer[i]->state_lock);
1197
1198 dprintk("vino_queue_init(): buffer = %d, offset = %d, "
1199 "size = %d\n", i, q->buffer[i]->offset,
1200 q->buffer[i]->size);
1201 }
1202
1203 if (ret) {
1204 vino_queue_free_with_count(q, i);
1205 *length = 0;
1206 } else {
1207 q->length = *length;
1208 vino_fifo_init(&q->in, q->length);
1209 vino_fifo_init(&q->out, q->length);
1210 q->type = VINO_MEMORY_MMAP;
1211 q->magic = VINO_QUEUE_MAGIC;
1212 }
1213
1214 mutex_unlock(&q->queue_mutex);
1215
1216 return ret;
1217 }
1218
1219 static struct vino_framebuffer *vino_queue_add(struct
1220 vino_framebuffer_queue *q,
1221 unsigned int id)
1222 {
1223 struct vino_framebuffer *ret = NULL;
1224 unsigned int total;
1225 unsigned long flags;
1226
1227 dprintk("vino_queue_add(): id = %d\n", id);
1228
1229 if (q->magic != VINO_QUEUE_MAGIC) {
1230 return ret;
1231 }
1232
1233 spin_lock_irqsave(&q->queue_lock, flags);
1234
1235 if (q->length == 0)
1236 goto out;
1237
1238 if (id >= q->length)
1239 goto out;
1240
1241 /* not needed?: if (vino_fifo_full(&q->out)) {
1242 goto out;
1243 }*/
1244 /* check that outgoing queue isn't already full
1245 * (or that it won't become full) */
1246 total = vino_fifo_get_used(&q->in) +
1247 vino_fifo_get_used(&q->out);
1248 if (total >= q->length)
1249 goto out;
1250
1251 if (vino_fifo_enqueue(&q->in, id))
1252 goto out;
1253
1254 ret = q->buffer[id];
1255
1256 out:
1257 spin_unlock_irqrestore(&q->queue_lock, flags);
1258
1259 return ret;
1260 }
1261
1262 static struct vino_framebuffer *vino_queue_transfer(struct
1263 vino_framebuffer_queue *q)
1264 {
1265 struct vino_framebuffer *ret = NULL;
1266 struct vino_framebuffer *fb;
1267 int id;
1268 unsigned long flags;
1269
1270 dprintk("vino_queue_transfer():\n");
1271
1272 if (q->magic != VINO_QUEUE_MAGIC) {
1273 return ret;
1274 }
1275
1276 spin_lock_irqsave(&q->queue_lock, flags);
1277
1278 if (q->length == 0)
1279 goto out;
1280
1281 // now this actually removes an entry from the incoming queue
1282 if (vino_fifo_dequeue(&q->in, &id)) {
1283 goto out;
1284 }
1285
1286 dprintk("vino_queue_transfer(): id = %d\n", id);
1287 fb = q->buffer[id];
1288
1289 // we have already checked that the outgoing queue is not full, but...
1290 if (vino_fifo_enqueue(&q->out, id)) {
1291 printk(KERN_ERR "vino_queue_transfer(): "
1292 "outgoing queue is full, this shouldn't happen!\n");
1293 goto out;
1294 }
1295
1296 ret = fb;
1297 out:
1298 spin_unlock_irqrestore(&q->queue_lock, flags);
1299
1300 return ret;
1301 }
1302
1303 /* returns true/false */
1304 static int vino_queue_incoming_contains(struct vino_framebuffer_queue *q,
1305 unsigned int id)
1306 {
1307 int ret = 0;
1308 unsigned long flags;
1309
1310 if (q->magic != VINO_QUEUE_MAGIC) {
1311 return ret;
1312 }
1313
1314 spin_lock_irqsave(&q->queue_lock, flags);
1315
1316 if (q->length == 0)
1317 goto out;
1318
1319 ret = vino_fifo_has_id(&q->in, id);
1320
1321 out:
1322 spin_unlock_irqrestore(&q->queue_lock, flags);
1323
1324 return ret;
1325 }
1326
1327 /* returns true/false */
1328 static int vino_queue_outgoing_contains(struct vino_framebuffer_queue *q,
1329 unsigned int id)
1330 {
1331 int ret = 0;
1332 unsigned long flags;
1333
1334 if (q->magic != VINO_QUEUE_MAGIC) {
1335 return ret;
1336 }
1337
1338 spin_lock_irqsave(&q->queue_lock, flags);
1339
1340 if (q->length == 0)
1341 goto out;
1342
1343 ret = vino_fifo_has_id(&q->out, id);
1344
1345 out:
1346 spin_unlock_irqrestore(&q->queue_lock, flags);
1347
1348 return ret;
1349 }
1350
1351 static int vino_queue_get_incoming(struct vino_framebuffer_queue *q,
1352 unsigned int *used)
1353 {
1354 int ret = 0;
1355 unsigned long flags;
1356
1357 if (q->magic != VINO_QUEUE_MAGIC) {
1358 return VINO_QUEUE_ERROR;
1359 }
1360
1361 spin_lock_irqsave(&q->queue_lock, flags);
1362
1363 if (q->length == 0) {
1364 ret = VINO_QUEUE_ERROR;
1365 goto out;
1366 }
1367
1368 *used = vino_fifo_get_used(&q->in);
1369
1370 out:
1371 spin_unlock_irqrestore(&q->queue_lock, flags);
1372
1373 return ret;
1374 }
1375
1376 static int vino_queue_get_outgoing(struct vino_framebuffer_queue *q,
1377 unsigned int *used)
1378 {
1379 int ret = 0;
1380 unsigned long flags;
1381
1382 if (q->magic != VINO_QUEUE_MAGIC) {
1383 return VINO_QUEUE_ERROR;
1384 }
1385
1386 spin_lock_irqsave(&q->queue_lock, flags);
1387
1388 if (q->length == 0) {
1389 ret = VINO_QUEUE_ERROR;
1390 goto out;
1391 }
1392
1393 *used = vino_fifo_get_used(&q->out);
1394
1395 out:
1396 spin_unlock_irqrestore(&q->queue_lock, flags);
1397
1398 return ret;
1399 }
1400
1401 #if 0
1402 static int vino_queue_get_total(struct vino_framebuffer_queue *q,
1403 unsigned int *total)
1404 {
1405 int ret = 0;
1406 unsigned long flags;
1407
1408 if (q->magic != VINO_QUEUE_MAGIC) {
1409 return VINO_QUEUE_ERROR;
1410 }
1411
1412 spin_lock_irqsave(&q->queue_lock, flags);
1413
1414 if (q->length == 0) {
1415 ret = VINO_QUEUE_ERROR;
1416 goto out;
1417 }
1418
1419 *total = vino_fifo_get_used(&q->in) +
1420 vino_fifo_get_used(&q->out);
1421
1422 out:
1423 spin_unlock_irqrestore(&q->queue_lock, flags);
1424
1425 return ret;
1426 }
1427 #endif
1428
1429 static struct vino_framebuffer *vino_queue_peek(struct
1430 vino_framebuffer_queue *q,
1431 unsigned int *id)
1432 {
1433 struct vino_framebuffer *ret = NULL;
1434 unsigned long flags;
1435
1436 if (q->magic != VINO_QUEUE_MAGIC) {
1437 return ret;
1438 }
1439
1440 spin_lock_irqsave(&q->queue_lock, flags);
1441
1442 if (q->length == 0)
1443 goto out;
1444
1445 if (vino_fifo_peek(&q->in, id)) {
1446 goto out;
1447 }
1448
1449 ret = q->buffer[*id];
1450 out:
1451 spin_unlock_irqrestore(&q->queue_lock, flags);
1452
1453 return ret;
1454 }
1455
1456 static struct vino_framebuffer *vino_queue_remove(struct
1457 vino_framebuffer_queue *q,
1458 unsigned int *id)
1459 {
1460 struct vino_framebuffer *ret = NULL;
1461 unsigned long flags;
1462 dprintk("vino_queue_remove():\n");
1463
1464 if (q->magic != VINO_QUEUE_MAGIC) {
1465 return ret;
1466 }
1467
1468 spin_lock_irqsave(&q->queue_lock, flags);
1469
1470 if (q->length == 0)
1471 goto out;
1472
1473 if (vino_fifo_dequeue(&q->out, id)) {
1474 goto out;
1475 }
1476
1477 dprintk("vino_queue_remove(): id = %d\n", *id);
1478 ret = q->buffer[*id];
1479 out:
1480 spin_unlock_irqrestore(&q->queue_lock, flags);
1481
1482 return ret;
1483 }
1484
1485 static struct
1486 vino_framebuffer *vino_queue_get_buffer(struct vino_framebuffer_queue *q,
1487 unsigned int id)
1488 {
1489 struct vino_framebuffer *ret = NULL;
1490 unsigned long flags;
1491
1492 if (q->magic != VINO_QUEUE_MAGIC) {
1493 return ret;
1494 }
1495
1496 spin_lock_irqsave(&q->queue_lock, flags);
1497
1498 if (q->length == 0)
1499 goto out;
1500
1501 if (id >= q->length)
1502 goto out;
1503
1504 ret = q->buffer[id];
1505 out:
1506 spin_unlock_irqrestore(&q->queue_lock, flags);
1507
1508 return ret;
1509 }
1510
1511 static unsigned int vino_queue_get_length(struct vino_framebuffer_queue *q)
1512 {
1513 unsigned int length = 0;
1514 unsigned long flags;
1515
1516 if (q->magic != VINO_QUEUE_MAGIC) {
1517 return length;
1518 }
1519
1520 spin_lock_irqsave(&q->queue_lock, flags);
1521 length = q->length;
1522 spin_unlock_irqrestore(&q->queue_lock, flags);
1523
1524 return length;
1525 }
1526
1527 static int vino_queue_has_mapped_buffers(struct vino_framebuffer_queue *q)
1528 {
1529 unsigned int i;
1530 int ret = 0;
1531 unsigned long flags;
1532
1533 if (q->magic != VINO_QUEUE_MAGIC) {
1534 return ret;
1535 }
1536
1537 spin_lock_irqsave(&q->queue_lock, flags);
1538 for (i = 0; i < q->length; i++) {
1539 if (q->buffer[i]->map_count > 0) {
1540 ret = 1;
1541 break;
1542 }
1543 }
1544 spin_unlock_irqrestore(&q->queue_lock, flags);
1545
1546 return ret;
1547 }
1548
1549 /* VINO functions */
1550
1551 /* execute with input_lock locked */
1552 static void vino_update_line_size(struct vino_channel_settings *vcs)
1553 {
1554 unsigned int w = vcs->clipping.right - vcs->clipping.left;
1555 unsigned int d = vcs->decimation;
1556 unsigned int bpp = vino_data_formats[vcs->data_format].bpp;
1557 unsigned int lsize;
1558
1559 dprintk("update_line_size(): before: w = %d, d = %d, "
1560 "line_size = %d\n", w, d, vcs->line_size);
1561
1562 /* line size must be multiple of 8 bytes */
1563 lsize = (bpp * (w / d)) & ~7;
1564 w = (lsize / bpp) * d;
1565
1566 vcs->clipping.right = vcs->clipping.left + w;
1567 vcs->line_size = lsize;
1568
1569 dprintk("update_line_size(): after: w = %d, d = %d, "
1570 "line_size = %d\n", w, d, vcs->line_size);
1571 }
1572
1573 /* execute with input_lock locked */
1574 static void vino_set_clipping(struct vino_channel_settings *vcs,
1575 unsigned int x, unsigned int y,
1576 unsigned int w, unsigned int h)
1577 {
1578 unsigned int maxwidth, maxheight;
1579 unsigned int d;
1580
1581 maxwidth = vino_data_norms[vcs->data_norm].width;
1582 maxheight = vino_data_norms[vcs->data_norm].height;
1583 d = vcs->decimation;
1584
1585 y &= ~1; /* odd/even fields */
1586
1587 if (x > maxwidth) {
1588 x = 0;
1589 }
1590 if (y > maxheight) {
1591 y = 0;
1592 }
1593
1594 if (((w / d) < VINO_MIN_WIDTH)
1595 || ((h / d) < VINO_MIN_HEIGHT)) {
1596 w = VINO_MIN_WIDTH * d;
1597 h = VINO_MIN_HEIGHT * d;
1598 }
1599
1600 if ((x + w) > maxwidth) {
1601 w = maxwidth - x;
1602 if ((w / d) < VINO_MIN_WIDTH)
1603 x = maxwidth - VINO_MIN_WIDTH * d;
1604 }
1605 if ((y + h) > maxheight) {
1606 h = maxheight - y;
1607 if ((h / d) < VINO_MIN_HEIGHT)
1608 y = maxheight - VINO_MIN_HEIGHT * d;
1609 }
1610
1611 vcs->clipping.left = x;
1612 vcs->clipping.top = y;
1613 vcs->clipping.right = x + w;
1614 vcs->clipping.bottom = y + h;
1615
1616 vino_update_line_size(vcs);
1617
1618 dprintk("clipping %d, %d, %d, %d / %d - %d\n",
1619 vcs->clipping.left, vcs->clipping.top, vcs->clipping.right,
1620 vcs->clipping.bottom, vcs->decimation, vcs->line_size);
1621 }
1622
1623 /* execute with input_lock locked */
1624 static inline void vino_set_default_clipping(struct vino_channel_settings *vcs)
1625 {
1626 vino_set_clipping(vcs, 0, 0, vino_data_norms[vcs->data_norm].width,
1627 vino_data_norms[vcs->data_norm].height);
1628 }
1629
1630 /* execute with input_lock locked */
1631 static void vino_set_scaling(struct vino_channel_settings *vcs,
1632 unsigned int w, unsigned int h)
1633 {
1634 unsigned int x, y, curw, curh, d;
1635
1636 x = vcs->clipping.left;
1637 y = vcs->clipping.top;
1638 curw = vcs->clipping.right - vcs->clipping.left;
1639 curh = vcs->clipping.bottom - vcs->clipping.top;
1640
1641 d = max(curw / w, curh / h);
1642
1643 dprintk("scaling w: %d, h: %d, curw: %d, curh: %d, d: %d\n",
1644 w, h, curw, curh, d);
1645
1646 if (d < 1) {
1647 d = 1;
1648 } else if (d > 8) {
1649 d = 8;
1650 }
1651
1652 vcs->decimation = d;
1653 vino_set_clipping(vcs, x, y, w * d, h * d);
1654
1655 dprintk("scaling %d, %d, %d, %d / %d - %d\n", vcs->clipping.left,
1656 vcs->clipping.top, vcs->clipping.right, vcs->clipping.bottom,
1657 vcs->decimation, vcs->line_size);
1658 }
1659
1660 /* execute with input_lock locked */
1661 static inline void vino_set_default_scaling(struct vino_channel_settings *vcs)
1662 {
1663 vino_set_scaling(vcs, vcs->clipping.right - vcs->clipping.left,
1664 vcs->clipping.bottom - vcs->clipping.top);
1665 }
1666
1667 /* execute with input_lock locked */
1668 static void vino_set_framerate(struct vino_channel_settings *vcs,
1669 unsigned int fps)
1670 {
1671 unsigned int mask;
1672
1673 switch (vcs->data_norm) {
1674 case VINO_DATA_NORM_NTSC:
1675 case VINO_DATA_NORM_D1:
1676 fps = (unsigned int)(fps / 6) * 6; // FIXME: round!
1677
1678 if (fps < vino_data_norms[vcs->data_norm].fps_min)
1679 fps = vino_data_norms[vcs->data_norm].fps_min;
1680 if (fps > vino_data_norms[vcs->data_norm].fps_max)
1681 fps = vino_data_norms[vcs->data_norm].fps_max;
1682
1683 switch (fps) {
1684 case 6:
1685 mask = 0x003;
1686 break;
1687 case 12:
1688 mask = 0x0c3;
1689 break;
1690 case 18:
1691 mask = 0x333;
1692 break;
1693 case 24:
1694 mask = 0x3ff;
1695 break;
1696 case 30:
1697 mask = 0xfff;
1698 break;
1699 default:
1700 mask = VINO_FRAMERT_FULL;
1701 }
1702 vcs->framert_reg = VINO_FRAMERT_RT(mask);
1703 break;
1704 case VINO_DATA_NORM_PAL:
1705 case VINO_DATA_NORM_SECAM:
1706 fps = (unsigned int)(fps / 5) * 5; // FIXME: round!
1707
1708 if (fps < vino_data_norms[vcs->data_norm].fps_min)
1709 fps = vino_data_norms[vcs->data_norm].fps_min;
1710 if (fps > vino_data_norms[vcs->data_norm].fps_max)
1711 fps = vino_data_norms[vcs->data_norm].fps_max;
1712
1713 switch (fps) {
1714 case 5:
1715 mask = 0x003;
1716 break;
1717 case 10:
1718 mask = 0x0c3;
1719 break;
1720 case 15:
1721 mask = 0x333;
1722 break;
1723 case 20:
1724 mask = 0x0ff;
1725 break;
1726 case 25:
1727 mask = 0x3ff;
1728 break;
1729 default:
1730 mask = VINO_FRAMERT_FULL;
1731 }
1732 vcs->framert_reg = VINO_FRAMERT_RT(mask) | VINO_FRAMERT_PAL;
1733 break;
1734 }
1735
1736 vcs->fps = fps;
1737 }
1738
1739 /* execute with input_lock locked */
1740 static inline void vino_set_default_framerate(struct
1741 vino_channel_settings *vcs)
1742 {
1743 vino_set_framerate(vcs, vino_data_norms[vcs->data_norm].fps_max);
1744 }
1745
1746 /*
1747 * Prepare VINO for DMA transfer...
1748 * (execute only with vino_lock and input_lock locked)
1749 */
1750 static int vino_dma_setup(struct vino_channel_settings *vcs,
1751 struct vino_framebuffer *fb)
1752 {
1753 u32 ctrl, intr;
1754 struct sgi_vino_channel *ch;
1755 const struct vino_data_norm *norm;
1756
1757 dprintk("vino_dma_setup():\n");
1758
1759 vcs->field = 0;
1760 fb->frame_counter = 0;
1761
1762 ch = (vcs->channel == VINO_CHANNEL_A) ? &vino->a : &vino->b;
1763 norm = &vino_data_norms[vcs->data_norm];
1764
1765 ch->page_index = 0;
1766 ch->line_count = 0;
1767
1768 /* VINO line size register is set 8 bytes less than actual */
1769 ch->line_size = vcs->line_size - 8;
1770
1771 /* let VINO know where to transfer data */
1772 ch->start_desc_tbl = fb->desc_table.dma;
1773 ch->next_4_desc = fb->desc_table.dma;
1774
1775 /* give vino time to fetch the first four descriptors, 5 usec
1776 * should be more than enough time */
1777 udelay(VINO_DESC_FETCH_DELAY);
1778
1779 dprintk("vino_dma_setup(): start desc = %08x, next 4 desc = %08x\n",
1780 ch->start_desc_tbl, ch->next_4_desc);
1781
1782 /* set the alpha register */
1783 ch->alpha = vcs->alpha;
1784
1785 /* set clipping registers */
1786 ch->clip_start = VINO_CLIP_ODD(norm->odd.top + vcs->clipping.top / 2) |
1787 VINO_CLIP_EVEN(norm->even.top +
1788 vcs->clipping.top / 2) |
1789 VINO_CLIP_X(vcs->clipping.left);
1790 ch->clip_end = VINO_CLIP_ODD(norm->odd.top +
1791 vcs->clipping.bottom / 2 - 1) |
1792 VINO_CLIP_EVEN(norm->even.top +
1793 vcs->clipping.bottom / 2 - 1) |
1794 VINO_CLIP_X(vcs->clipping.right);
1795
1796 /* set the size of actual content in the buffer (DECIMATION !) */
1797 fb->data_size = ((vcs->clipping.right - vcs->clipping.left) /
1798 vcs->decimation) *
1799 ((vcs->clipping.bottom - vcs->clipping.top) /
1800 vcs->decimation) *
1801 vino_data_formats[vcs->data_format].bpp;
1802
1803 ch->frame_rate = vcs->framert_reg;
1804
1805 ctrl = vino->control;
1806 intr = vino->intr_status;
1807
1808 if (vcs->channel == VINO_CHANNEL_A) {
1809 /* All interrupt conditions for this channel was cleared
1810 * so clear the interrupt status register and enable
1811 * interrupts */
1812 intr &= ~VINO_INTSTAT_A;
1813 ctrl |= VINO_CTRL_A_INT;
1814
1815 /* enable synchronization */
1816 ctrl |= VINO_CTRL_A_SYNC_ENBL;
1817
1818 /* enable frame assembly */
1819 ctrl |= VINO_CTRL_A_INTERLEAVE_ENBL;
1820
1821 /* set decimation used */
1822 if (vcs->decimation < 2)
1823 ctrl &= ~VINO_CTRL_A_DEC_ENBL;
1824 else {
1825 ctrl |= VINO_CTRL_A_DEC_ENBL;
1826 ctrl &= ~VINO_CTRL_A_DEC_SCALE_MASK;
1827 ctrl |= (vcs->decimation - 1) <<
1828 VINO_CTRL_A_DEC_SCALE_SHIFT;
1829 }
1830
1831 /* select input interface */
1832 if (vcs->input == VINO_INPUT_D1)
1833 ctrl |= VINO_CTRL_A_SELECT;
1834 else
1835 ctrl &= ~VINO_CTRL_A_SELECT;
1836
1837 /* palette */
1838 ctrl &= ~(VINO_CTRL_A_LUMA_ONLY | VINO_CTRL_A_RGB |
1839 VINO_CTRL_A_DITHER);
1840 } else {
1841 intr &= ~VINO_INTSTAT_B;
1842 ctrl |= VINO_CTRL_B_INT;
1843
1844 ctrl |= VINO_CTRL_B_SYNC_ENBL;
1845 ctrl |= VINO_CTRL_B_INTERLEAVE_ENBL;
1846
1847 if (vcs->decimation < 2)
1848 ctrl &= ~VINO_CTRL_B_DEC_ENBL;
1849 else {
1850 ctrl |= VINO_CTRL_B_DEC_ENBL;
1851 ctrl &= ~VINO_CTRL_B_DEC_SCALE_MASK;
1852 ctrl |= (vcs->decimation - 1) <<
1853 VINO_CTRL_B_DEC_SCALE_SHIFT;
1854
1855 }
1856 if (vcs->input == VINO_INPUT_D1)
1857 ctrl |= VINO_CTRL_B_SELECT;
1858 else
1859 ctrl &= ~VINO_CTRL_B_SELECT;
1860
1861 ctrl &= ~(VINO_CTRL_B_LUMA_ONLY | VINO_CTRL_B_RGB |
1862 VINO_CTRL_B_DITHER);
1863 }
1864
1865 /* set palette */
1866 fb->data_format = vcs->data_format;
1867
1868 switch (vcs->data_format) {
1869 case VINO_DATA_FMT_GREY:
1870 ctrl |= (vcs->channel == VINO_CHANNEL_A) ?
1871 VINO_CTRL_A_LUMA_ONLY : VINO_CTRL_B_LUMA_ONLY;
1872 break;
1873 case VINO_DATA_FMT_RGB32:
1874 ctrl |= (vcs->channel == VINO_CHANNEL_A) ?
1875 VINO_CTRL_A_RGB : VINO_CTRL_B_RGB;
1876 break;
1877 case VINO_DATA_FMT_YUV:
1878 /* nothing needs to be done */
1879 break;
1880 case VINO_DATA_FMT_RGB332:
1881 ctrl |= (vcs->channel == VINO_CHANNEL_A) ?
1882 VINO_CTRL_A_RGB | VINO_CTRL_A_DITHER :
1883 VINO_CTRL_B_RGB | VINO_CTRL_B_DITHER;
1884 break;
1885 }
1886
1887 vino->intr_status = intr;
1888 vino->control = ctrl;
1889
1890 return 0;
1891 }
1892
1893 /* (execute only with vino_lock locked) */
1894 static inline void vino_dma_start(struct vino_channel_settings *vcs)
1895 {
1896 u32 ctrl = vino->control;
1897
1898 dprintk("vino_dma_start():\n");
1899 ctrl |= (vcs->channel == VINO_CHANNEL_A) ?
1900 VINO_CTRL_A_DMA_ENBL : VINO_CTRL_B_DMA_ENBL;
1901 vino->control = ctrl;
1902 }
1903
1904 /* (execute only with vino_lock locked) */
1905 static inline void vino_dma_stop(struct vino_channel_settings *vcs)
1906 {
1907 u32 ctrl = vino->control;
1908
1909 ctrl &= (vcs->channel == VINO_CHANNEL_A) ?
1910 ~VINO_CTRL_A_DMA_ENBL : ~VINO_CTRL_B_DMA_ENBL;
1911 ctrl &= (vcs->channel == VINO_CHANNEL_A) ?
1912 ~VINO_CTRL_A_INT : ~VINO_CTRL_B_INT;
1913 vino->control = ctrl;
1914 dprintk("vino_dma_stop():\n");
1915 }
1916
1917 /*
1918 * Load dummy page to descriptor registers. This prevents generating of
1919 * spurious interrupts. (execute only with vino_lock locked)
1920 */
1921 static void vino_clear_interrupt(struct vino_channel_settings *vcs)
1922 {
1923 struct sgi_vino_channel *ch;
1924
1925 ch = (vcs->channel == VINO_CHANNEL_A) ? &vino->a : &vino->b;
1926
1927 ch->page_index = 0;
1928 ch->line_count = 0;
1929
1930 ch->start_desc_tbl = vino_drvdata->dummy_desc_table.dma;
1931 ch->next_4_desc = vino_drvdata->dummy_desc_table.dma;
1932
1933 udelay(VINO_DESC_FETCH_DELAY);
1934 dprintk("channel %c clear interrupt condition\n",
1935 (vcs->channel == VINO_CHANNEL_A) ? 'A':'B');
1936 }
1937
1938 static int vino_capture(struct vino_channel_settings *vcs,
1939 struct vino_framebuffer *fb)
1940 {
1941 int err = 0;
1942 unsigned long flags, flags2;
1943
1944 spin_lock_irqsave(&fb->state_lock, flags);
1945
1946 if (fb->state == VINO_FRAMEBUFFER_IN_USE)
1947 err = -EBUSY;
1948 fb->state = VINO_FRAMEBUFFER_IN_USE;
1949
1950 spin_unlock_irqrestore(&fb->state_lock, flags);
1951
1952 if (err)
1953 return err;
1954
1955 spin_lock_irqsave(&vino_drvdata->vino_lock, flags);
1956 spin_lock_irqsave(&vino_drvdata->input_lock, flags2);
1957
1958 vino_dma_setup(vcs, fb);
1959 vino_dma_start(vcs);
1960
1961 spin_unlock_irqrestore(&vino_drvdata->input_lock, flags2);
1962 spin_unlock_irqrestore(&vino_drvdata->vino_lock, flags);
1963
1964 return err;
1965 }
1966
1967 static
1968 struct vino_framebuffer *vino_capture_enqueue(struct
1969 vino_channel_settings *vcs,
1970 unsigned int index)
1971 {
1972 struct vino_framebuffer *fb;
1973 unsigned long flags;
1974
1975 dprintk("vino_capture_enqueue():\n");
1976
1977 spin_lock_irqsave(&vcs->capture_lock, flags);
1978
1979 fb = vino_queue_add(&vcs->fb_queue, index);
1980 if (fb == NULL) {
1981 dprintk("vino_capture_enqueue(): vino_queue_add() failed, "
1982 "queue full?\n");
1983 goto out;
1984 }
1985 out:
1986 spin_unlock_irqrestore(&vcs->capture_lock, flags);
1987
1988 return fb;
1989 }
1990
1991 static int vino_capture_next(struct vino_channel_settings *vcs, int start)
1992 {
1993 struct vino_framebuffer *fb;
1994 unsigned int incoming, id;
1995 int err = 0;
1996 unsigned long flags;
1997
1998 dprintk("vino_capture_next():\n");
1999
2000 spin_lock_irqsave(&vcs->capture_lock, flags);
2001
2002 if (start) {
2003 /* start capture only if capture isn't in progress already */
2004 if (vcs->capturing) {
2005 spin_unlock_irqrestore(&vcs->capture_lock, flags);
2006 return 0;
2007 }
2008
2009 } else {
2010 /* capture next frame:
2011 * stop capture if capturing is not set */
2012 if (!vcs->capturing) {
2013 spin_unlock_irqrestore(&vcs->capture_lock, flags);
2014 return 0;
2015 }
2016 }
2017
2018 err = vino_queue_get_incoming(&vcs->fb_queue, &incoming);
2019 if (err) {
2020 dprintk("vino_capture_next(): vino_queue_get_incoming() "
2021 "failed\n");
2022 err = -EINVAL;
2023 goto out;
2024 }
2025 if (incoming == 0) {
2026 dprintk("vino_capture_next(): no buffers available\n");
2027 goto out;
2028 }
2029
2030 fb = vino_queue_peek(&vcs->fb_queue, &id);
2031 if (fb == NULL) {
2032 dprintk("vino_capture_next(): vino_queue_peek() failed\n");
2033 err = -EINVAL;
2034 goto out;
2035 }
2036
2037 if (start) {
2038 vcs->capturing = 1;
2039 }
2040
2041 spin_unlock_irqrestore(&vcs->capture_lock, flags);
2042
2043 err = vino_capture(vcs, fb);
2044
2045 return err;
2046
2047 out:
2048 vcs->capturing = 0;
2049 spin_unlock_irqrestore(&vcs->capture_lock, flags);
2050
2051 return err;
2052 }
2053
2054 static inline int vino_is_capturing(struct vino_channel_settings *vcs)
2055 {
2056 int ret;
2057 unsigned long flags;
2058
2059 spin_lock_irqsave(&vcs->capture_lock, flags);
2060
2061 ret = vcs->capturing;
2062
2063 spin_unlock_irqrestore(&vcs->capture_lock, flags);
2064
2065 return ret;
2066 }
2067
2068 /* waits until a frame is captured */
2069 static int vino_wait_for_frame(struct vino_channel_settings *vcs)
2070 {
2071 wait_queue_t wait;
2072 int err = 0;
2073
2074 dprintk("vino_wait_for_frame():\n");
2075
2076 init_waitqueue_entry(&wait, current);
2077 /* add ourselves into wait queue */
2078 add_wait_queue(&vcs->fb_queue.frame_wait_queue, &wait);
2079
2080 /* to ensure that schedule_timeout will return immediately
2081 * if VINO interrupt was triggered meanwhile */
2082 schedule_timeout_interruptible(msecs_to_jiffies(100));
2083
2084 if (signal_pending(current))
2085 err = -EINTR;
2086
2087 remove_wait_queue(&vcs->fb_queue.frame_wait_queue, &wait);
2088
2089 dprintk("vino_wait_for_frame(): waiting for frame %s\n",
2090 err ? "failed" : "ok");
2091
2092 return err;
2093 }
2094
2095 /* the function assumes that PAGE_SIZE % 4 == 0 */
2096 static void vino_convert_to_rgba(struct vino_framebuffer *fb) {
2097 unsigned char *pageptr;
2098 unsigned int page, i;
2099 unsigned char a;
2100
2101 for (page = 0; page < fb->desc_table.page_count; page++) {
2102 pageptr = (unsigned char *)fb->desc_table.virtual[page];
2103
2104 for (i = 0; i < PAGE_SIZE; i += 4) {
2105 a = pageptr[0];
2106 pageptr[0] = pageptr[3];
2107 pageptr[1] = pageptr[2];
2108 pageptr[2] = pageptr[1];
2109 pageptr[3] = a;
2110 pageptr += 4;
2111 }
2112 }
2113 }
2114
2115 /* checks if the buffer is in correct state and syncs data */
2116 static int vino_check_buffer(struct vino_channel_settings *vcs,
2117 struct vino_framebuffer *fb)
2118 {
2119 int err = 0;
2120 unsigned long flags;
2121
2122 dprintk("vino_check_buffer():\n");
2123
2124 spin_lock_irqsave(&fb->state_lock, flags);
2125 switch (fb->state) {
2126 case VINO_FRAMEBUFFER_IN_USE:
2127 err = -EIO;
2128 break;
2129 case VINO_FRAMEBUFFER_READY:
2130 vino_sync_buffer(fb);
2131 fb->state = VINO_FRAMEBUFFER_UNUSED;
2132 break;
2133 default:
2134 err = -EINVAL;
2135 }
2136 spin_unlock_irqrestore(&fb->state_lock, flags);
2137
2138 if (!err) {
2139 if (vino_pixel_conversion
2140 && (fb->data_format == VINO_DATA_FMT_RGB32)) {
2141 vino_convert_to_rgba(fb);
2142 }
2143 } else if (err && (err != -EINVAL)) {
2144 dprintk("vino_check_buffer(): buffer not ready\n");
2145
2146 spin_lock_irqsave(&vino_drvdata->vino_lock, flags);
2147 vino_dma_stop(vcs);
2148 vino_clear_interrupt(vcs);
2149 spin_unlock_irqrestore(&vino_drvdata->vino_lock, flags);
2150 }
2151
2152 return err;
2153 }
2154
2155 /* forcefully terminates capture */
2156 static void vino_capture_stop(struct vino_channel_settings *vcs)
2157 {
2158 unsigned int incoming = 0, outgoing = 0, id;
2159 unsigned long flags, flags2;
2160
2161 dprintk("vino_capture_stop():\n");
2162
2163 spin_lock_irqsave(&vcs->capture_lock, flags);
2164
2165 /* unset capturing to stop queue processing */
2166 vcs->capturing = 0;
2167
2168 spin_lock_irqsave(&vino_drvdata->vino_lock, flags2);
2169
2170 vino_dma_stop(vcs);
2171 vino_clear_interrupt(vcs);
2172
2173 spin_unlock_irqrestore(&vino_drvdata->vino_lock, flags2);
2174
2175 /* remove all items from the queue */
2176 if (vino_queue_get_incoming(&vcs->fb_queue, &incoming)) {
2177 dprintk("vino_capture_stop(): "
2178 "vino_queue_get_incoming() failed\n");
2179 goto out;
2180 }
2181 while (incoming > 0) {
2182 vino_queue_transfer(&vcs->fb_queue);
2183
2184 if (vino_queue_get_incoming(&vcs->fb_queue, &incoming)) {
2185 dprintk("vino_capture_stop(): "
2186 "vino_queue_get_incoming() failed\n");
2187 goto out;
2188 }
2189 }
2190
2191 if (vino_queue_get_outgoing(&vcs->fb_queue, &outgoing)) {
2192 dprintk("vino_capture_stop(): "
2193 "vino_queue_get_outgoing() failed\n");
2194 goto out;
2195 }
2196 while (outgoing > 0) {
2197 vino_queue_remove(&vcs->fb_queue, &id);
2198
2199 if (vino_queue_get_outgoing(&vcs->fb_queue, &outgoing)) {
2200 dprintk("vino_capture_stop(): "
2201 "vino_queue_get_outgoing() failed\n");
2202 goto out;
2203 }
2204 }
2205
2206 out:
2207 spin_unlock_irqrestore(&vcs->capture_lock, flags);
2208 }
2209
2210 #if 0
2211 static int vino_capture_failed(struct vino_channel_settings *vcs)
2212 {
2213 struct vino_framebuffer *fb;
2214 unsigned long flags;
2215 unsigned int i;
2216 int ret;
2217
2218 dprintk("vino_capture_failed():\n");
2219
2220 spin_lock_irqsave(&vino_drvdata->vino_lock, flags);
2221
2222 vino_dma_stop(vcs);
2223 vino_clear_interrupt(vcs);
2224
2225 spin_unlock_irqrestore(&vino_drvdata->vino_lock, flags);
2226
2227 ret = vino_queue_get_incoming(&vcs->fb_queue, &i);
2228 if (ret == VINO_QUEUE_ERROR) {
2229 dprintk("vino_queue_get_incoming() failed\n");
2230 return -EINVAL;
2231 }
2232 if (i == 0) {
2233 /* no buffers to process */
2234 return 0;
2235 }
2236
2237 fb = vino_queue_peek(&vcs->fb_queue, &i);
2238 if (fb == NULL) {
2239 dprintk("vino_queue_peek() failed\n");
2240 return -EINVAL;
2241 }
2242
2243 spin_lock_irqsave(&fb->state_lock, flags);
2244 if (fb->state == VINO_FRAMEBUFFER_IN_USE) {
2245 fb->state = VINO_FRAMEBUFFER_UNUSED;
2246 vino_queue_transfer(&vcs->fb_queue);
2247 vino_queue_remove(&vcs->fb_queue, &i);
2248 /* we should actually discard the newest frame,
2249 * but who cares ... */
2250 }
2251 spin_unlock_irqrestore(&fb->state_lock, flags);
2252
2253 return 0;
2254 }
2255 #endif
2256
2257 static void vino_skip_frame(struct vino_channel_settings *vcs)
2258 {
2259 struct vino_framebuffer *fb;
2260 unsigned long flags;
2261 unsigned int id;
2262
2263 spin_lock_irqsave(&vcs->capture_lock, flags);
2264 fb = vino_queue_peek(&vcs->fb_queue, &id);
2265 if (!fb) {
2266 spin_unlock_irqrestore(&vcs->capture_lock, flags);
2267 dprintk("vino_skip_frame(): vino_queue_peek() failed!\n");
2268 return;
2269 }
2270 spin_unlock_irqrestore(&vcs->capture_lock, flags);
2271
2272 spin_lock_irqsave(&fb->state_lock, flags);
2273 fb->state = VINO_FRAMEBUFFER_UNUSED;
2274 spin_unlock_irqrestore(&fb->state_lock, flags);
2275
2276 vino_capture_next(vcs, 0);
2277 }
2278
2279 static void vino_frame_done(struct vino_channel_settings *vcs)
2280 {
2281 struct vino_framebuffer *fb;
2282 unsigned long flags;
2283
2284 spin_lock_irqsave(&vcs->capture_lock, flags);
2285 fb = vino_queue_transfer(&vcs->fb_queue);
2286 if (!fb) {
2287 spin_unlock_irqrestore(&vcs->capture_lock, flags);
2288 dprintk("vino_frame_done(): vino_queue_transfer() failed!\n");
2289 return;
2290 }
2291 spin_unlock_irqrestore(&vcs->capture_lock, flags);
2292
2293 fb->frame_counter = vcs->int_data.frame_counter;
2294 memcpy(&fb->timestamp, &vcs->int_data.timestamp,
2295 sizeof(struct timeval));
2296
2297 spin_lock_irqsave(&fb->state_lock, flags);
2298 if (fb->state == VINO_FRAMEBUFFER_IN_USE)
2299 fb->state = VINO_FRAMEBUFFER_READY;
2300 spin_unlock_irqrestore(&fb->state_lock, flags);
2301
2302 wake_up(&vcs->fb_queue.frame_wait_queue);
2303
2304 vino_capture_next(vcs, 0);
2305 }
2306
2307 static void vino_capture_tasklet(unsigned long channel) {
2308 struct vino_channel_settings *vcs;
2309
2310 vcs = (channel == VINO_CHANNEL_A)
2311 ? &vino_drvdata->a : &vino_drvdata->b;
2312
2313 if (vcs->int_data.skip)
2314 vcs->int_data.skip_count++;
2315
2316 if (vcs->int_data.skip && (vcs->int_data.skip_count
2317 <= VINO_MAX_FRAME_SKIP_COUNT)) {
2318 vino_skip_frame(vcs);
2319 } else {
2320 vcs->int_data.skip_count = 0;
2321 vino_frame_done(vcs);
2322 }
2323 }
2324
2325 static irqreturn_t vino_interrupt(int irq, void *dev_id)
2326 {
2327 u32 ctrl, intr;
2328 unsigned int fc_a, fc_b;
2329 int handled_a = 0, skip_a = 0, done_a = 0;
2330 int handled_b = 0, skip_b = 0, done_b = 0;
2331
2332 #ifdef VINO_DEBUG_INT
2333 int loop = 0;
2334 unsigned int line_count = vino->a.line_count,
2335 page_index = vino->a.page_index,
2336 field_counter = vino->a.field_counter,
2337 start_desc_tbl = vino->a.start_desc_tbl,
2338 next_4_desc = vino->a.next_4_desc;
2339 unsigned int line_count_2,
2340 page_index_2,
2341 field_counter_2,
2342 start_desc_tbl_2,
2343 next_4_desc_2;
2344 #endif
2345
2346 spin_lock(&vino_drvdata->vino_lock);
2347
2348 while ((intr = vino->intr_status)) {
2349 fc_a = vino->a.field_counter >> 1;
2350 fc_b = vino->b.field_counter >> 1;
2351
2352 /* handle error-interrupts in some special way ?
2353 * --> skips frames */
2354 if (intr & VINO_INTSTAT_A) {
2355 if (intr & VINO_INTSTAT_A_EOF) {
2356 vino_drvdata->a.field++;
2357 if (vino_drvdata->a.field > 1) {
2358 vino_dma_stop(&vino_drvdata->a);
2359 vino_clear_interrupt(&vino_drvdata->a);
2360 vino_drvdata->a.field = 0;
2361 done_a = 1;
2362 } else {
2363 if (vino->a.page_index
2364 != vino_drvdata->a.line_size) {
2365 vino->a.line_count = 0;
2366 vino->a.page_index =
2367 vino_drvdata->
2368 a.line_size;
2369 vino->a.next_4_desc =
2370 vino->a.start_desc_tbl;
2371 }
2372 }
2373 dprintk("channel A end-of-field "
2374 "interrupt: %04x\n", intr);
2375 } else {
2376 vino_dma_stop(&vino_drvdata->a);
2377 vino_clear_interrupt(&vino_drvdata->a);
2378 vino_drvdata->a.field = 0;
2379 skip_a = 1;
2380 dprintk("channel A error interrupt: %04x\n",
2381 intr);
2382 }
2383
2384 #ifdef VINO_DEBUG_INT
2385 line_count_2 = vino->a.line_count;
2386 page_index_2 = vino->a.page_index;
2387 field_counter_2 = vino->a.field_counter;
2388 start_desc_tbl_2 = vino->a.start_desc_tbl;
2389 next_4_desc_2 = vino->a.next_4_desc;
2390
2391 printk("intr = %04x, loop = %d, field = %d\n",
2392 intr, loop, vino_drvdata->a.field);
2393 printk("1- line count = %04d, page index = %04d, "
2394 "start = %08x, next = %08x\n"
2395 " fieldc = %d, framec = %d\n",
2396 line_count, page_index, start_desc_tbl,
2397 next_4_desc, field_counter, fc_a);
2398 printk("12-line count = %04d, page index = %04d, "
2399 " start = %08x, next = %08x\n",
2400 line_count_2, page_index_2, start_desc_tbl_2,
2401 next_4_desc_2);
2402
2403 if (done_a)
2404 printk("\n");
2405 #endif
2406 }
2407
2408 if (intr & VINO_INTSTAT_B) {
2409 if (intr & VINO_INTSTAT_B_EOF) {
2410 vino_drvdata->b.field++;
2411 if (vino_drvdata->b.field > 1) {
2412 vino_dma_stop(&vino_drvdata->b);
2413 vino_clear_interrupt(&vino_drvdata->b);
2414 vino_drvdata->b.field = 0;
2415 done_b = 1;
2416 }
2417 dprintk("channel B end-of-field "
2418 "interrupt: %04x\n", intr);
2419 } else {
2420 vino_dma_stop(&vino_drvdata->b);
2421 vino_clear_interrupt(&vino_drvdata->b);
2422 vino_drvdata->b.field = 0;
2423 skip_b = 1;
2424 dprintk("channel B error interrupt: %04x\n",
2425 intr);
2426 }
2427 }
2428
2429 /* Always remember to clear interrupt status.
2430 * Disable VINO interrupts while we do this. */
2431 ctrl = vino->control;
2432 vino->control = ctrl & ~(VINO_CTRL_A_INT | VINO_CTRL_B_INT);
2433 vino->intr_status = ~intr;
2434 vino->control = ctrl;
2435
2436 spin_unlock(&vino_drvdata->vino_lock);
2437
2438 if ((!handled_a) && (done_a || skip_a)) {
2439 if (!skip_a) {
2440 do_gettimeofday(&vino_drvdata->
2441 a.int_data.timestamp);
2442 vino_drvdata->a.int_data.frame_counter = fc_a;
2443 }
2444 vino_drvdata->a.int_data.skip = skip_a;
2445
2446 dprintk("channel A %s, interrupt: %d\n",
2447 skip_a ? "skipping frame" : "frame done",
2448 intr);
2449 tasklet_hi_schedule(&vino_tasklet_a);
2450 handled_a = 1;
2451 }
2452
2453 if ((!handled_b) && (done_b || skip_b)) {
2454 if (!skip_b) {
2455 do_gettimeofday(&vino_drvdata->
2456 b.int_data.timestamp);
2457 vino_drvdata->b.int_data.frame_counter = fc_b;
2458 }
2459 vino_drvdata->b.int_data.skip = skip_b;
2460
2461 dprintk("channel B %s, interrupt: %d\n",
2462 skip_b ? "skipping frame" : "frame done",
2463 intr);
2464 tasklet_hi_schedule(&vino_tasklet_b);
2465 handled_b = 1;
2466 }
2467
2468 #ifdef VINO_DEBUG_INT
2469 loop++;
2470 #endif
2471 spin_lock(&vino_drvdata->vino_lock);
2472 }
2473
2474 spin_unlock(&vino_drvdata->vino_lock);
2475
2476 return IRQ_HANDLED;
2477 }
2478
2479 /* VINO video input management */
2480
2481 static int vino_get_saa7191_input(int input)
2482 {
2483 switch (input) {
2484 case VINO_INPUT_COMPOSITE:
2485 return SAA7191_INPUT_COMPOSITE;
2486 case VINO_INPUT_SVIDEO:
2487 return SAA7191_INPUT_SVIDEO;
2488 default:
2489 printk(KERN_ERR "VINO: vino_get_saa7191_input(): "
2490 "invalid input!\n");
2491 return -1;
2492 }
2493 }
2494
2495 static int vino_get_saa7191_norm(unsigned int data_norm)
2496 {
2497 switch (data_norm) {
2498 case VINO_DATA_NORM_AUTO:
2499 return SAA7191_NORM_AUTO;
2500 case VINO_DATA_NORM_AUTO_EXT:
2501 return SAA7191_NORM_AUTO_EXT;
2502 case VINO_DATA_NORM_PAL:
2503 return SAA7191_NORM_PAL;
2504 case VINO_DATA_NORM_NTSC:
2505 return SAA7191_NORM_NTSC;
2506 case VINO_DATA_NORM_SECAM:
2507 return SAA7191_NORM_SECAM;
2508 default:
2509 printk(KERN_ERR "VINO: vino_get_saa7191_norm(): "
2510 "invalid norm!\n");
2511 return -1;
2512 }
2513 }
2514
2515 static int vino_get_from_saa7191_norm(int saa7191_norm)
2516 {
2517 switch (saa7191_norm) {
2518 case SAA7191_NORM_PAL:
2519 return VINO_DATA_NORM_PAL;
2520 case SAA7191_NORM_NTSC:
2521 return VINO_DATA_NORM_NTSC;
2522 case SAA7191_NORM_SECAM:
2523 return VINO_DATA_NORM_SECAM;
2524 default:
2525 printk(KERN_ERR "VINO: vino_get_from_saa7191_norm(): "
2526 "invalid norm!\n");
2527 return VINO_DATA_NORM_NONE;
2528 }
2529 }
2530
2531 static int vino_saa7191_set_norm(unsigned int *data_norm)
2532 {
2533 int saa7191_norm, new_data_norm;
2534 int err = 0;
2535
2536 saa7191_norm = vino_get_saa7191_norm(*data_norm);
2537
2538 err = i2c_decoder_command(DECODER_SAA7191_SET_NORM,
2539 &saa7191_norm);
2540 if (err)
2541 goto out;
2542
2543 if ((*data_norm == VINO_DATA_NORM_AUTO)
2544 || (*data_norm == VINO_DATA_NORM_AUTO_EXT)) {
2545 struct saa7191_status status;
2546
2547 err = i2c_decoder_command(DECODER_SAA7191_GET_STATUS,
2548 &status);
2549 if (err)
2550 goto out;
2551
2552 new_data_norm =
2553 vino_get_from_saa7191_norm(status.norm);
2554 if (new_data_norm == VINO_DATA_NORM_NONE) {
2555 err = -EINVAL;
2556 goto out;
2557 }
2558
2559 *data_norm = (unsigned int)new_data_norm;
2560 }
2561
2562 out:
2563 return err;
2564 }
2565
2566 /* execute with input_lock locked */
2567 static int vino_is_input_owner(struct vino_channel_settings *vcs)
2568 {
2569 switch(vcs->input) {
2570 case VINO_INPUT_COMPOSITE:
2571 case VINO_INPUT_SVIDEO:
2572 return (vino_drvdata->decoder.owner == vcs->channel);
2573 case VINO_INPUT_D1:
2574 return (vino_drvdata->camera.owner == vcs->channel);
2575 default:
2576 return 0;
2577 }
2578 }
2579
2580 static int vino_acquire_input(struct vino_channel_settings *vcs)
2581 {
2582 unsigned long flags;
2583 int ret = 0;
2584
2585 dprintk("vino_acquire_input():\n");
2586
2587 spin_lock_irqsave(&vino_drvdata->input_lock, flags);
2588
2589 /* First try D1 and then SAA7191 */
2590 if (vino_drvdata->camera.driver
2591 && (vino_drvdata->camera.owner == VINO_NO_CHANNEL)) {
2592 if (i2c_use_client(vino_drvdata->camera.driver)) {
2593 ret = -ENODEV;
2594 goto out;
2595 }
2596
2597 vino_drvdata->camera.owner = vcs->channel;
2598 vcs->input = VINO_INPUT_D1;
2599 vcs->data_norm = VINO_DATA_NORM_D1;
2600 } else if (vino_drvdata->decoder.driver
2601 && (vino_drvdata->decoder.owner == VINO_NO_CHANNEL)) {
2602 int input, data_norm;
2603 int saa7191_input;
2604
2605 if (i2c_use_client(vino_drvdata->decoder.driver)) {
2606 ret = -ENODEV;
2607 goto out;
2608 }
2609
2610 input = VINO_INPUT_COMPOSITE;
2611
2612 saa7191_input = vino_get_saa7191_input(input);
2613 ret = i2c_decoder_command(DECODER_SET_INPUT,
2614 &saa7191_input);
2615 if (ret) {
2616 ret = -EINVAL;
2617 goto out;
2618 }
2619
2620 spin_unlock_irqrestore(&vino_drvdata->input_lock, flags);
2621
2622 /* Don't hold spinlocks while auto-detecting norm
2623 * as it may take a while... */
2624
2625 data_norm = VINO_DATA_NORM_AUTO_EXT;
2626
2627 ret = vino_saa7191_set_norm(&data_norm);
2628 if ((ret == -EBUSY) || (ret == -EAGAIN)) {
2629 data_norm = VINO_DATA_NORM_PAL;
2630 ret = vino_saa7191_set_norm(&data_norm);
2631 }
2632
2633 spin_lock_irqsave(&vino_drvdata->input_lock, flags);
2634
2635 if (ret) {
2636 ret = -EINVAL;
2637 goto out;
2638 }
2639
2640 vino_drvdata->decoder.owner = vcs->channel;
2641
2642 vcs->input = input;
2643 vcs->data_norm = data_norm;
2644 } else {
2645 vcs->input = (vcs->channel == VINO_CHANNEL_A) ?
2646 vino_drvdata->b.input : vino_drvdata->a.input;
2647 vcs->data_norm = (vcs->channel == VINO_CHANNEL_A) ?
2648 vino_drvdata->b.data_norm : vino_drvdata->a.data_norm;
2649 }
2650
2651 if (vcs->input == VINO_INPUT_NONE) {
2652 ret = -ENODEV;
2653 goto out;
2654 }
2655
2656 vino_set_default_clipping(vcs);
2657 vino_set_default_scaling(vcs);
2658 vino_set_default_framerate(vcs);
2659
2660 dprintk("vino_acquire_input(): %s\n", vino_inputs[vcs->input].name);
2661
2662 out:
2663 spin_unlock_irqrestore(&vino_drvdata->input_lock, flags);
2664
2665 return ret;
2666 }
2667
2668 static int vino_set_input(struct vino_channel_settings *vcs, int input)
2669 {
2670 struct vino_channel_settings *vcs2 = (vcs->channel == VINO_CHANNEL_A) ?
2671 &vino_drvdata->b : &vino_drvdata->a;
2672 unsigned long flags;
2673 int ret = 0;
2674
2675 dprintk("vino_set_input():\n");
2676
2677 spin_lock_irqsave(&vino_drvdata->input_lock, flags);
2678
2679 if (vcs->input == input)
2680 goto out;
2681
2682 switch (input) {
2683 case VINO_INPUT_COMPOSITE:
2684 case VINO_INPUT_SVIDEO:
2685 if (!vino_drvdata->decoder.driver) {
2686 ret = -EINVAL;
2687 goto out;
2688 }
2689
2690 if (vino_drvdata->decoder.owner == VINO_NO_CHANNEL) {
2691 if (i2c_use_client(vino_drvdata->decoder.driver)) {
2692 ret = -ENODEV;
2693 goto out;
2694 }
2695 vino_drvdata->decoder.owner = vcs->channel;
2696 }
2697
2698 if (vino_drvdata->decoder.owner == vcs->channel) {
2699 int data_norm;
2700 int saa7191_input;
2701
2702 saa7191_input = vino_get_saa7191_input(input);
2703 ret = i2c_decoder_command(DECODER_SET_INPUT,
2704 &saa7191_input);
2705 if (ret) {
2706 vino_drvdata->decoder.owner = VINO_NO_CHANNEL;
2707 ret = -EINVAL;
2708 goto out;
2709 }
2710
2711 spin_unlock_irqrestore(&vino_drvdata->input_lock, flags);
2712
2713 /* Don't hold spinlocks while auto-detecting norm
2714 * as it may take a while... */
2715
2716 data_norm = VINO_DATA_NORM_AUTO_EXT;
2717
2718 ret = vino_saa7191_set_norm(&data_norm);
2719 if ((ret == -EBUSY) || (ret == -EAGAIN)) {
2720 data_norm = VINO_DATA_NORM_PAL;
2721 ret = vino_saa7191_set_norm(&data_norm);
2722 }
2723
2724 spin_lock_irqsave(&vino_drvdata->input_lock, flags);
2725
2726 if (ret) {
2727 vino_drvdata->decoder.owner = VINO_NO_CHANNEL;
2728 ret = -EINVAL;
2729 goto out;
2730 }
2731
2732 vcs->input = input;
2733 vcs->data_norm = data_norm;
2734 } else {
2735 if (input != vcs2->input) {
2736 ret = -EBUSY;
2737 goto out;
2738 }
2739
2740 vcs->input = input;
2741 vcs->data_norm = vcs2->data_norm;
2742 }
2743
2744 if (vino_drvdata->camera.owner == vcs->channel) {
2745 /* Transfer the ownership or release the input */
2746 if (vcs2->input == VINO_INPUT_D1) {
2747 vino_drvdata->camera.owner = vcs2->channel;
2748 } else {
2749 i2c_release_client(vino_drvdata->
2750 camera.driver);
2751 vino_drvdata->camera.owner = VINO_NO_CHANNEL;
2752 }
2753 }
2754 break;
2755 case VINO_INPUT_D1:
2756 if (!vino_drvdata->camera.driver) {
2757 ret = -EINVAL;
2758 goto out;
2759 }
2760
2761 if (vino_drvdata->camera.owner == VINO_NO_CHANNEL) {
2762 if (i2c_use_client(vino_drvdata->camera.driver)) {
2763 ret = -ENODEV;
2764 goto out;
2765 }
2766 vino_drvdata->camera.owner = vcs->channel;
2767 }
2768
2769 if (vino_drvdata->decoder.owner == vcs->channel) {
2770 /* Transfer the ownership or release the input */
2771 if ((vcs2->input == VINO_INPUT_COMPOSITE) ||
2772 (vcs2->input == VINO_INPUT_SVIDEO)) {
2773 vino_drvdata->decoder.owner = vcs2->channel;
2774 } else {
2775 i2c_release_client(vino_drvdata->
2776 decoder.driver);
2777 vino_drvdata->decoder.owner = VINO_NO_CHANNEL;
2778 }
2779 }
2780
2781 vcs->input = input;
2782 vcs->data_norm = VINO_DATA_NORM_D1;
2783 break;
2784 default:
2785 ret = -EINVAL;
2786 goto out;
2787 }
2788
2789 vino_set_default_clipping(vcs);
2790 vino_set_default_scaling(vcs);
2791 vino_set_default_framerate(vcs);
2792
2793 dprintk("vino_set_input(): %s\n", vino_inputs[vcs->input].name);
2794
2795 out:
2796 spin_unlock_irqrestore(&vino_drvdata->input_lock, flags);
2797
2798 return ret;
2799 }
2800
2801 static void vino_release_input(struct vino_channel_settings *vcs)
2802 {
2803 struct vino_channel_settings *vcs2 = (vcs->channel == VINO_CHANNEL_A) ?
2804 &vino_drvdata->b : &vino_drvdata->a;
2805 unsigned long flags;
2806
2807 dprintk("vino_release_input():\n");
2808
2809 spin_lock_irqsave(&vino_drvdata->input_lock, flags);
2810
2811 /* Release ownership of the channel
2812 * and if the other channel takes input from
2813 * the same source, transfer the ownership */
2814 if (vino_drvdata->camera.owner == vcs->channel) {
2815 if (vcs2->input == VINO_INPUT_D1) {
2816 vino_drvdata->camera.owner = vcs2->channel;
2817 } else {
2818 i2c_release_client(vino_drvdata->camera.driver);
2819 vino_drvdata->camera.owner = VINO_NO_CHANNEL;
2820 }
2821 } else if (vino_drvdata->decoder.owner == vcs->channel) {
2822 if ((vcs2->input == VINO_INPUT_COMPOSITE) ||
2823 (vcs2->input == VINO_INPUT_SVIDEO)) {
2824 vino_drvdata->decoder.owner = vcs2->channel;
2825 } else {
2826 i2c_release_client(vino_drvdata->decoder.driver);
2827 vino_drvdata->decoder.owner = VINO_NO_CHANNEL;
2828 }
2829 }
2830 vcs->input = VINO_INPUT_NONE;
2831
2832 spin_unlock_irqrestore(&vino_drvdata->input_lock, flags);
2833 }
2834
2835 /* execute with input_lock locked */
2836 static int vino_set_data_norm(struct vino_channel_settings *vcs,
2837 unsigned int data_norm,
2838 unsigned long *flags)
2839 {
2840 int err = 0;
2841
2842 if (data_norm == vcs->data_norm)
2843 return 0;
2844
2845 switch (vcs->input) {
2846 case VINO_INPUT_D1:
2847 /* only one "norm" supported */
2848 if ((data_norm != VINO_DATA_NORM_D1)
2849 && (data_norm != VINO_DATA_NORM_AUTO)
2850 && (data_norm != VINO_DATA_NORM_AUTO_EXT))
2851 return -EINVAL;
2852 break;
2853 case VINO_INPUT_COMPOSITE:
2854 case VINO_INPUT_SVIDEO: {
2855 if ((data_norm != VINO_DATA_NORM_PAL)
2856 && (data_norm != VINO_DATA_NORM_NTSC)
2857 && (data_norm != VINO_DATA_NORM_SECAM)
2858 && (data_norm != VINO_DATA_NORM_AUTO)
2859 && (data_norm != VINO_DATA_NORM_AUTO_EXT))
2860 return -EINVAL;
2861
2862 spin_unlock_irqrestore(&vino_drvdata->input_lock, *flags);
2863
2864 /* Don't hold spinlocks while setting norm
2865 * as it may take a while... */
2866
2867 err = vino_saa7191_set_norm(&data_norm);
2868
2869 spin_lock_irqsave(&vino_drvdata->input_lock, *flags);
2870
2871 if (err)
2872 goto out;
2873
2874 vcs->data_norm = data_norm;
2875
2876 vino_set_default_clipping(vcs);
2877 vino_set_default_scaling(vcs);
2878 vino_set_default_framerate(vcs);
2879 break;
2880 }
2881 default:
2882 return -EINVAL;
2883 }
2884
2885 out:
2886 return err;
2887 }
2888
2889 /* V4L2 helper functions */
2890
2891 static int vino_find_data_format(__u32 pixelformat)
2892 {
2893 int i;
2894
2895 for (i = 0; i < VINO_DATA_FMT_COUNT; i++) {
2896 if (vino_data_formats[i].pixelformat == pixelformat)
2897 return i;
2898 }
2899
2900 return VINO_DATA_FMT_NONE;
2901 }
2902
2903 static int vino_enum_data_norm(struct vino_channel_settings *vcs, __u32 index)
2904 {
2905 int data_norm = VINO_DATA_NORM_NONE;
2906 unsigned long flags;
2907
2908 spin_lock_irqsave(&vino_drvdata->input_lock, flags);
2909 switch(vcs->input) {
2910 case VINO_INPUT_COMPOSITE:
2911 case VINO_INPUT_SVIDEO:
2912 if (index == 0) {
2913 data_norm = VINO_DATA_NORM_PAL;
2914 } else if (index == 1) {
2915 data_norm = VINO_DATA_NORM_NTSC;
2916 } else if (index == 2) {
2917 data_norm = VINO_DATA_NORM_SECAM;
2918 }
2919 break;
2920 case VINO_INPUT_D1:
2921 if (index == 0) {
2922 data_norm = VINO_DATA_NORM_D1;
2923 }
2924 break;
2925 }
2926 spin_unlock_irqrestore(&vino_drvdata->input_lock, flags);
2927
2928 return data_norm;
2929 }
2930
2931 static int vino_enum_input(struct vino_channel_settings *vcs, __u32 index)
2932 {
2933 int input = VINO_INPUT_NONE;
2934 unsigned long flags;
2935
2936 spin_lock_irqsave(&vino_drvdata->input_lock, flags);
2937 if (vino_drvdata->decoder.driver && vino_drvdata->camera.driver) {
2938 switch (index) {
2939 case 0:
2940 input = VINO_INPUT_COMPOSITE;
2941 break;
2942 case 1:
2943 input = VINO_INPUT_SVIDEO;
2944 break;
2945 case 2:
2946 input = VINO_INPUT_D1;
2947 break;
2948 }
2949 } else if (vino_drvdata->decoder.driver) {
2950 switch (index) {
2951 case 0:
2952 input = VINO_INPUT_COMPOSITE;
2953 break;
2954 case 1:
2955 input = VINO_INPUT_SVIDEO;
2956 break;
2957 }
2958 } else if (vino_drvdata->camera.driver) {
2959 switch (index) {
2960 case 0:
2961 input = VINO_INPUT_D1;
2962 break;
2963 }
2964 }
2965 spin_unlock_irqrestore(&vino_drvdata->input_lock, flags);
2966
2967 return input;
2968 }
2969
2970 /* execute with input_lock locked */
2971 static __u32 vino_find_input_index(struct vino_channel_settings *vcs)
2972 {
2973 __u32 index = 0;
2974 // FIXME: detect when no inputs available
2975
2976 if (vino_drvdata->decoder.driver && vino_drvdata->camera.driver) {
2977 switch (vcs->input) {
2978 case VINO_INPUT_COMPOSITE:
2979 index = 0;
2980 break;
2981 case VINO_INPUT_SVIDEO:
2982 index = 1;
2983 break;
2984 case VINO_INPUT_D1:
2985 index = 2;
2986 break;
2987 }
2988 } else if (vino_drvdata->decoder.driver) {
2989 switch (vcs->input) {
2990 case VINO_INPUT_COMPOSITE:
2991 index = 0;
2992 break;
2993 case VINO_INPUT_SVIDEO:
2994 index = 1;
2995 break;
2996 }
2997 } else if (vino_drvdata->camera.driver) {
2998 switch (vcs->input) {
2999 case VINO_INPUT_D1:
3000 index = 0;
3001 break;
3002 }
3003 }
3004
3005 return index;
3006 }
3007
3008 /* V4L2 ioctls */
3009
3010 static void vino_v4l2_querycap(struct v4l2_capability *cap)
3011 {
3012 memset(cap, 0, sizeof(struct v4l2_capability));
3013
3014 strcpy(cap->driver, vino_driver_name);
3015 strcpy(cap->card, vino_driver_description);
3016 strcpy(cap->bus_info, vino_bus_name);
3017 cap->version = VINO_VERSION_CODE;
3018 cap->capabilities =
3019 V4L2_CAP_VIDEO_CAPTURE |
3020 V4L2_CAP_STREAMING;
3021 // V4L2_CAP_OVERLAY, V4L2_CAP_READWRITE
3022 }
3023
3024 static int vino_v4l2_enuminput(struct vino_channel_settings *vcs,
3025 struct v4l2_input *i)
3026 {
3027 __u32 index = i->index;
3028 int input;
3029 dprintk("requested index = %d\n", index);
3030
3031 input = vino_enum_input(vcs, index);
3032 if (input == VINO_INPUT_NONE)
3033 return -EINVAL;
3034
3035 memset(i, 0, sizeof(struct v4l2_input));
3036
3037 i->index = index;
3038 i->type = V4L2_INPUT_TYPE_CAMERA;
3039 i->std = vino_inputs[input].std;
3040 strcpy(i->name, vino_inputs[input].name);
3041
3042 if ((input == VINO_INPUT_COMPOSITE)
3043 || (input == VINO_INPUT_SVIDEO)) {
3044 struct saa7191_status status;
3045 i2c_decoder_command(DECODER_SAA7191_GET_STATUS, &status);
3046 i->status |= status.signal ? 0 : V4L2_IN_ST_NO_SIGNAL;
3047 i->status |= status.color ? 0 : V4L2_IN_ST_NO_COLOR;
3048 }
3049
3050 return 0;
3051 }
3052
3053 static int vino_v4l2_g_input(struct vino_channel_settings *vcs,
3054 unsigned int *i)
3055 {
3056 __u32 index;
3057 int input;
3058 unsigned long flags;
3059
3060 spin_lock_irqsave(&vino_drvdata->input_lock, flags);
3061 input = vcs->input;
3062 index = vino_find_input_index(vcs);
3063 spin_unlock_irqrestore(&vino_drvdata->input_lock, flags);
3064
3065 dprintk("input = %d\n", input);
3066
3067 if (input == VINO_INPUT_NONE) {
3068 return -EINVAL;
3069 }
3070
3071 *i = index;
3072
3073 return 0;
3074 }
3075
3076 static int vino_v4l2_s_input(struct vino_channel_settings *vcs,
3077 unsigned int *i)
3078 {
3079 int input;
3080 dprintk("requested input = %d\n", *i);
3081
3082 input = vino_enum_input(vcs, *i);
3083 if (input == VINO_INPUT_NONE)
3084 return -EINVAL;
3085
3086 return vino_set_input(vcs, input);
3087 }
3088
3089 static int vino_v4l2_enumstd(struct vino_channel_settings *vcs,
3090 struct v4l2_standard *s)
3091 {
3092 int index = s->index;
3093 int data_norm;
3094
3095 data_norm = vino_enum_data_norm(vcs, index);
3096 dprintk("standard index = %d\n", index);
3097
3098 if (data_norm == VINO_DATA_NORM_NONE)
3099 return -EINVAL;
3100
3101 dprintk("standard name = %s\n",
3102 vino_data_norms[data_norm].description);
3103
3104 memset(s, 0, sizeof(struct v4l2_standard));
3105 s->index = index;
3106
3107 s->id = vino_data_norms[data_norm].std;
3108 s->frameperiod.numerator = 1;
3109 s->frameperiod.denominator =
3110 vino_data_norms[data_norm].fps_max;
3111 s->framelines =
3112 vino_data_norms[data_norm].framelines;
3113 strcpy(s->name,
3114 vino_data_norms[data_norm].description);
3115
3116 return 0;
3117 }
3118
3119 static int vino_v4l2_querystd(struct vino_channel_settings *vcs,
3120 v4l2_std_id *std)
3121 {
3122 unsigned long flags;
3123 int err = 0;
3124
3125 spin_lock_irqsave(&vino_drvdata->input_lock, flags);
3126
3127 switch (vcs->input) {
3128 case VINO_INPUT_D1:
3129 *std = vino_inputs[vcs->input].std;
3130 break;
3131 case VINO_INPUT_COMPOSITE:
3132 case VINO_INPUT_SVIDEO: {
3133 struct saa7191_status status;
3134
3135 i2c_decoder_command(DECODER_SAA7191_GET_STATUS, &status);
3136
3137 if (status.signal) {
3138 if (status.signal_60hz) {
3139 *std = V4L2_STD_NTSC;
3140 } else {
3141 *std = V4L2_STD_PAL | V4L2_STD_SECAM;
3142 }
3143 } else {
3144 *std = vino_inputs[vcs->input].std;
3145 }
3146 break;
3147 }
3148 default:
3149 err = -EINVAL;
3150 }
3151
3152 spin_unlock_irqrestore(&vino_drvdata->input_lock, flags);
3153
3154 return err;
3155 }
3156
3157 static int vino_v4l2_g_std(struct vino_channel_settings *vcs,
3158 v4l2_std_id *std)
3159 {
3160 unsigned long flags;
3161
3162 spin_lock_irqsave(&vino_drvdata->input_lock, flags);
3163
3164 *std = vino_data_norms[vcs->data_norm].std;
3165 dprintk("current standard = %d\n", vcs->data_norm);
3166
3167 spin_unlock_irqrestore(&vino_drvdata->input_lock, flags);
3168
3169 return 0;
3170 }
3171
3172 static int vino_v4l2_s_std(struct vino_channel_settings *vcs,
3173 v4l2_std_id *std)
3174 {
3175 unsigned long flags;
3176 int ret = 0;
3177
3178 spin_lock_irqsave(&vino_drvdata->input_lock, flags);
3179
3180 if (!vino_is_input_owner(vcs)) {
3181 ret = -EBUSY;
3182 goto out;
3183 }
3184
3185 /* check if the standard is valid for the current input */
3186 if ((*std) & vino_inputs[vcs->input].std) {
3187 dprintk("standard accepted\n");
3188
3189 /* change the video norm for SAA7191
3190 * and accept NTSC for D1 (do nothing) */
3191
3192 if (vcs->input == VINO_INPUT_D1)
3193 goto out;
3194
3195 if (((*std) & V4L2_STD_PAL)
3196 && ((*std) & V4L2_STD_NTSC)
3197 && ((*std) & V4L2_STD_SECAM)) {
3198 ret = vino_set_data_norm(vcs, VINO_DATA_NORM_AUTO_EXT,
3199 &flags);
3200 } else if ((*std) & V4L2_STD_PAL) {
3201 ret = vino_set_data_norm(vcs, VINO_DATA_NORM_PAL,
3202 &flags);
3203 } else if ((*std) & V4L2_STD_NTSC) {
3204 ret = vino_set_data_norm(vcs, VINO_DATA_NORM_NTSC,
3205 &flags);
3206 } else if ((*std) & V4L2_STD_SECAM) {
3207 ret = vino_set_data_norm(vcs, VINO_DATA_NORM_SECAM,
3208 &flags);
3209 } else {
3210 ret = -EINVAL;
3211 }
3212
3213 if (ret) {
3214 ret = -EINVAL;
3215 }
3216 } else {
3217 ret = -EINVAL;
3218 }
3219
3220 out:
3221 spin_unlock_irqrestore(&vino_drvdata->input_lock, flags);
3222
3223 return ret;
3224 }
3225
3226 static int vino_v4l2_enum_fmt(struct vino_channel_settings *vcs,
3227 struct v4l2_fmtdesc *fd)
3228 {
3229 enum v4l2_buf_type type = fd->type;
3230 int index = fd->index;
3231 dprintk("format index = %d\n", index);
3232
3233 switch (fd->type) {
3234 case V4L2_BUF_TYPE_VIDEO_CAPTURE:
3235 if ((fd->index < 0) ||
3236 (fd->index >= VINO_DATA_FMT_COUNT))
3237 return -EINVAL;
3238 dprintk("format name = %s\n",
3239 vino_data_formats[index].description);
3240
3241 memset(fd, 0, sizeof(struct v4l2_fmtdesc));
3242 fd->index = index;
3243 fd->type = type;
3244 fd->pixelformat = vino_data_formats[index].pixelformat;
3245 strcpy(fd->description, vino_data_formats[index].description);
3246 break;
3247 case V4L2_BUF_TYPE_VIDEO_OVERLAY:
3248 default:
3249 return -EINVAL;
3250 }
3251
3252 return 0;
3253 }
3254
3255 static int vino_v4l2_try_fmt(struct vino_channel_settings *vcs,
3256 struct v4l2_format *f)
3257 {
3258 struct vino_channel_settings tempvcs;
3259 unsigned long flags;
3260
3261 switch (f->type) {
3262 case V4L2_BUF_TYPE_VIDEO_CAPTURE: {
3263 struct v4l2_pix_format *pf = &f->fmt.pix;
3264
3265 dprintk("requested: w = %d, h = %d\n",
3266 pf->width, pf->height);
3267
3268 spin_lock_irqsave(&vino_drvdata->input_lock, flags);
3269 memcpy(&tempvcs, vcs, sizeof(struct vino_channel_settings));
3270 spin_unlock_irqrestore(&vino_drvdata->input_lock, flags);
3271
3272 tempvcs.data_format = vino_find_data_format(pf->pixelformat);
3273 if (tempvcs.data_format == VINO_DATA_FMT_NONE) {
3274 tempvcs.data_format = VINO_DATA_FMT_GREY;
3275 pf->pixelformat =
3276 vino_data_formats[tempvcs.data_format].
3277 pixelformat;
3278 }
3279
3280 /* data format must be set before clipping/scaling */
3281 vino_set_scaling(&tempvcs, pf->width, pf->height);
3282
3283 dprintk("data format = %s\n",
3284 vino_data_formats[tempvcs.data_format].description);
3285
3286 pf->width = (tempvcs.clipping.right - tempvcs.clipping.left) /
3287 tempvcs.decimation;
3288 pf->height = (tempvcs.clipping.bottom - tempvcs.clipping.top) /
3289 tempvcs.decimation;
3290
3291 pf->field = V4L2_FIELD_INTERLACED;
3292 pf->bytesperline = tempvcs.line_size;
3293 pf->sizeimage = tempvcs.line_size *
3294 (tempvcs.clipping.bottom - tempvcs.clipping.top) /
3295 tempvcs.decimation;
3296 pf->colorspace =
3297 vino_data_formats[tempvcs.data_format].colorspace;
3298
3299 pf->priv = 0;
3300 break;
3301 }
3302 case V4L2_BUF_TYPE_VIDEO_OVERLAY:
3303 default:
3304 return -EINVAL;
3305 }
3306
3307 return 0;
3308 }
3309
3310 static int vino_v4l2_g_fmt(struct vino_channel_settings *vcs,
3311 struct v4l2_format *f)
3312 {
3313 unsigned long flags;
3314
3315 switch (f->type) {
3316 case V4L2_BUF_TYPE_VIDEO_CAPTURE: {
3317 struct v4l2_pix_format *pf = &f->fmt.pix;
3318
3319 spin_lock_irqsave(&vino_drvdata->input_lock, flags);
3320
3321 pf->width = (vcs->clipping.right - vcs->clipping.left) /
3322 vcs->decimation;
3323 pf->height = (vcs->clipping.bottom - vcs->clipping.top) /
3324 vcs->decimation;
3325 pf->pixelformat =
3326 vino_data_formats[vcs->data_format].pixelformat;
3327
3328 pf->field = V4L2_FIELD_INTERLACED;
3329 pf->bytesperline = vcs->line_size;
3330 pf->sizeimage = vcs->line_size *
3331 (vcs->clipping.bottom - vcs->clipping.top) /
3332 vcs->decimation;
3333 pf->colorspace =
3334 vino_data_formats[vcs->data_format].colorspace;
3335
3336 pf->priv = 0;
3337
3338 spin_unlock_irqrestore(&vino_drvdata->input_lock, flags);
3339 break;
3340 }
3341 case V4L2_BUF_TYPE_VIDEO_OVERLAY:
3342 default:
3343 return -EINVAL;
3344 }
3345
3346 return 0;
3347 }
3348
3349 static int vino_v4l2_s_fmt(struct vino_channel_settings *vcs,
3350 struct v4l2_format *f)
3351 {
3352 int data_format;
3353 unsigned long flags;
3354
3355 switch (f->type) {
3356 case V4L2_BUF_TYPE_VIDEO_CAPTURE: {
3357 struct v4l2_pix_format *pf = &f->fmt.pix;
3358
3359 spin_lock_irqsave(&vino_drvdata->input_lock, flags);
3360
3361 data_format = vino_find_data_format(pf->pixelformat);
3362
3363 if (data_format == VINO_DATA_FMT_NONE) {
3364 vcs->data_format = VINO_DATA_FMT_GREY;
3365 pf->pixelformat =
3366 vino_data_formats[vcs->data_format].
3367 pixelformat;
3368 } else {
3369 vcs->data_format = data_format;
3370 }
3371
3372 /* data format must be set before clipping/scaling */
3373 vino_set_scaling(vcs, pf->width, pf->height);
3374
3375 dprintk("data format = %s\n",
3376 vino_data_formats[vcs->data_format].description);
3377
3378 pf->width = vcs->clipping.right - vcs->clipping.left;
3379 pf->height = vcs->clipping.bottom - vcs->clipping.top;
3380
3381 pf->field = V4L2_FIELD_INTERLACED;
3382 pf->bytesperline = vcs->line_size;
3383 pf->sizeimage = vcs->line_size *
3384 (vcs->clipping.bottom - vcs->clipping.top) /
3385 vcs->decimation;
3386 pf->colorspace =
3387 vino_data_formats[vcs->data_format].colorspace;
3388
3389 pf->priv = 0;
3390
3391 spin_unlock_irqrestore(&vino_drvdata->input_lock, flags);
3392 break;
3393 }
3394 case V4L2_BUF_TYPE_VIDEO_OVERLAY:
3395 default:
3396 return -EINVAL;
3397 }
3398
3399 return 0;
3400 }
3401
3402 static int vino_v4l2_cropcap(struct vino_channel_settings *vcs,
3403 struct v4l2_cropcap *ccap)
3404 {
3405 const struct vino_data_norm *norm;
3406 unsigned long flags;
3407
3408 switch (ccap->type) {
3409 case V4L2_BUF_TYPE_VIDEO_CAPTURE:
3410 spin_lock_irqsave(&vino_drvdata->input_lock, flags);
3411
3412 norm = &vino_data_norms[vcs->data_norm];
3413
3414 spin_unlock_irqrestore(&vino_drvdata->input_lock, flags);
3415
3416 ccap->bounds.left = 0;
3417 ccap->bounds.top = 0;
3418 ccap->bounds.width = norm->width;
3419 ccap->bounds.height = norm->height;
3420 memcpy(&ccap->defrect, &ccap->bounds,
3421 sizeof(struct v4l2_rect));
3422
3423 ccap->pixelaspect.numerator = 1;
3424 ccap->pixelaspect.denominator = 1;
3425 break;
3426 case V4L2_BUF_TYPE_VIDEO_OVERLAY:
3427 default:
3428 return -EINVAL;
3429 }
3430
3431 return 0;
3432 }
3433
3434 static int vino_v4l2_g_crop(struct vino_channel_settings *vcs,
3435 struct v4l2_crop *c)
3436 {
3437 unsigned long flags;
3438
3439 switch (c->type) {
3440 case V4L2_BUF_TYPE_VIDEO_CAPTURE:
3441 spin_lock_irqsave(&vino_drvdata->input_lock, flags);
3442
3443 c->c.left = vcs->clipping.left;
3444 c->c.top = vcs->clipping.top;
3445 c->c.width = vcs->clipping.right - vcs->clipping.left;
3446 c->c.height = vcs->clipping.bottom - vcs->clipping.top;
3447
3448 spin_unlock_irqrestore(&vino_drvdata->input_lock, flags);
3449 break;
3450 case V4L2_BUF_TYPE_VIDEO_OVERLAY:
3451 default:
3452 return -EINVAL;
3453 }
3454
3455 return 0;
3456 }
3457
3458 static int vino_v4l2_s_crop(struct vino_channel_settings *vcs,
3459 struct v4l2_crop *c)
3460 {
3461 unsigned long flags;
3462
3463 switch (c->type) {
3464 case V4L2_BUF_TYPE_VIDEO_CAPTURE:
3465 spin_lock_irqsave(&vino_drvdata->input_lock, flags);
3466
3467 vino_set_clipping(vcs, c->c.left, c->c.top,
3468 c->c.width, c->c.height);
3469
3470 spin_unlock_irqrestore(&vino_drvdata->input_lock, flags);
3471 break;
3472 case V4L2_BUF_TYPE_VIDEO_OVERLAY:
3473 default:
3474 return -EINVAL;
3475 }
3476
3477 return 0;
3478 }
3479
3480 static int vino_v4l2_g_parm(struct vino_channel_settings *vcs,
3481 struct v4l2_streamparm *sp)
3482 {
3483 unsigned long flags;
3484
3485 switch (sp->type) {
3486 case V4L2_BUF_TYPE_VIDEO_CAPTURE: {
3487 struct v4l2_captureparm *cp = &sp->parm.capture;
3488 memset(cp, 0, sizeof(struct v4l2_captureparm));
3489
3490 cp->capability = V4L2_CAP_TIMEPERFRAME;
3491 cp->timeperframe.numerator = 1;
3492
3493 spin_lock_irqsave(&vino_drvdata->input_lock, flags);
3494
3495 cp->timeperframe.denominator = vcs->fps;
3496
3497 spin_unlock_irqrestore(&vino_drvdata->input_lock, flags);
3498
3499 // TODO: cp->readbuffers = xxx;
3500 break;
3501 }
3502 case V4L2_BUF_TYPE_VIDEO_OVERLAY:
3503 default:
3504 return -EINVAL;
3505 }
3506
3507 return 0;
3508 }
3509
3510 static int vino_v4l2_s_parm(struct vino_channel_settings *vcs,
3511 struct v4l2_streamparm *sp)
3512 {
3513 unsigned long flags;
3514
3515 switch (sp->type) {
3516 case V4L2_BUF_TYPE_VIDEO_CAPTURE: {
3517 struct v4l2_captureparm *cp = &sp->parm.capture;
3518
3519 spin_lock_irqsave(&vino_drvdata->input_lock, flags);
3520
3521 if ((cp->timeperframe.numerator == 0) ||
3522 (cp->timeperframe.denominator == 0)) {
3523 /* reset framerate */
3524 vino_set_default_framerate(vcs);
3525 } else {
3526 vino_set_framerate(vcs, cp->timeperframe.denominator /
3527 cp->timeperframe.numerator);
3528 }
3529
3530 spin_unlock_irqrestore(&vino_drvdata->input_lock, flags);
3531
3532 // TODO: set buffers according to cp->readbuffers
3533 break;
3534 }
3535 case V4L2_BUF_TYPE_VIDEO_OVERLAY:
3536 default:
3537 return -EINVAL;
3538 }
3539
3540 return 0;
3541 }
3542
3543 static int vino_v4l2_reqbufs(struct vino_channel_settings *vcs,
3544 struct v4l2_requestbuffers *rb)
3545 {
3546 if (vcs->reading)
3547 return -EBUSY;
3548
3549 switch (rb->type) {
3550 case V4L2_BUF_TYPE_VIDEO_CAPTURE: {
3551 // TODO: check queue type
3552 if (rb->memory != V4L2_MEMORY_MMAP) {
3553 dprintk("type not mmap\n");
3554 return -EINVAL;
3555 }
3556
3557 dprintk("count = %d\n", rb->count);
3558 if (rb->count > 0) {
3559 if (vino_is_capturing(vcs)) {
3560 dprintk("busy, capturing\n");
3561 return -EBUSY;
3562 }
3563
3564 if (vino_queue_has_mapped_buffers(&vcs->fb_queue)) {
3565 dprintk("busy, buffers still mapped\n");
3566 return -EBUSY;
3567 } else {
3568 vcs->streaming = 0;
3569 vino_queue_free(&vcs->fb_queue);
3570 vino_queue_init(&vcs->fb_queue, &rb->count);
3571 }
3572 } else {
3573 vcs->streaming = 0;
3574 vino_capture_stop(vcs);
3575 vino_queue_free(&vcs->fb_queue);
3576 }
3577 break;
3578 }
3579 case V4L2_BUF_TYPE_VIDEO_OVERLAY:
3580 default:
3581 return -EINVAL;
3582 }
3583
3584 return 0;
3585 }
3586
3587 static void vino_v4l2_get_buffer_status(struct vino_channel_settings *vcs,
3588 struct vino_framebuffer *fb,
3589 struct v4l2_buffer *b)
3590 {
3591 if (vino_queue_outgoing_contains(&vcs->fb_queue,
3592 fb->id)) {
3593 b->flags &= ~V4L2_BUF_FLAG_QUEUED;
3594 b->flags |= V4L2_BUF_FLAG_DONE;
3595 } else if (vino_queue_incoming_contains(&vcs->fb_queue,
3596 fb->id)) {
3597 b->flags &= ~V4L2_BUF_FLAG_DONE;
3598 b->flags |= V4L2_BUF_FLAG_QUEUED;
3599 } else {
3600 b->flags &= ~(V4L2_BUF_FLAG_DONE |
3601 V4L2_BUF_FLAG_QUEUED);
3602 }
3603
3604 b->flags &= ~(V4L2_BUF_FLAG_TIMECODE);
3605
3606 if (fb->map_count > 0)
3607 b->flags |= V4L2_BUF_FLAG_MAPPED;
3608
3609 b->index = fb->id;
3610 b->memory = (vcs->fb_queue.type == VINO_MEMORY_MMAP) ?
3611 V4L2_MEMORY_MMAP : V4L2_MEMORY_USERPTR;
3612 b->m.offset = fb->offset;
3613 b->bytesused = fb->data_size;
3614 b->length = fb->size;
3615 b->field = V4L2_FIELD_INTERLACED;
3616 b->sequence = fb->frame_counter;
3617 memcpy(&b->timestamp, &fb->timestamp,
3618 sizeof(struct timeval));
3619 // b->input ?
3620
3621 dprintk("buffer %d: length = %d, bytesused = %d, offset = %d\n",
3622 fb->id, fb->size, fb->data_size, fb->offset);
3623 }
3624
3625 static int vino_v4l2_querybuf(struct vino_channel_settings *vcs,
3626 struct v4l2_buffer *b)
3627 {
3628 if (vcs->reading)
3629 return -EBUSY;
3630
3631 switch (b->type) {
3632 case V4L2_BUF_TYPE_VIDEO_CAPTURE: {
3633 struct vino_framebuffer *fb;
3634
3635 // TODO: check queue type
3636 if (b->index >= vino_queue_get_length(&vcs->fb_queue)) {
3637 dprintk("invalid index = %d\n",
3638 b->index);
3639 return -EINVAL;
3640 }
3641
3642 fb = vino_queue_get_buffer(&vcs->fb_queue,
3643 b->index);
3644 if (fb == NULL) {
3645 dprintk("vino_queue_get_buffer() failed");
3646 return -EINVAL;
3647 }
3648
3649 vino_v4l2_get_buffer_status(vcs, fb, b);
3650 break;
3651 }
3652 case V4L2_BUF_TYPE_VIDEO_OVERLAY:
3653 default:
3654 return -EINVAL;
3655 }
3656
3657 return 0;
3658 }
3659
3660 static int vino_v4l2_qbuf(struct vino_channel_settings *vcs,
3661 struct v4l2_buffer *b)
3662 {
3663 if (vcs->reading)
3664 return -EBUSY;
3665
3666 switch (b->type) {
3667 case V4L2_BUF_TYPE_VIDEO_CAPTURE: {
3668 struct vino_framebuffer *fb;
3669 int ret;
3670
3671 // TODO: check queue type
3672 if (b->memory != V4L2_MEMORY_MMAP) {
3673 dprintk("type not mmap\n");
3674 return -EINVAL;
3675 }
3676
3677 fb = vino_capture_enqueue(vcs, b->index);
3678 if (fb == NULL)
3679 return -EINVAL;
3680
3681 vino_v4l2_get_buffer_status(vcs, fb, b);
3682
3683 if (vcs->streaming) {
3684 ret = vino_capture_next(vcs, 1);
3685 if (ret)
3686 return ret;
3687 }
3688 break;
3689 }
3690 case V4L2_BUF_TYPE_VIDEO_OVERLAY:
3691 default:
3692 return -EINVAL;
3693 }
3694
3695 return 0;
3696 }
3697
3698 static int vino_v4l2_dqbuf(struct vino_channel_settings *vcs,
3699 struct v4l2_buffer *b,
3700 unsigned int nonblocking)
3701 {
3702 if (vcs->reading)
3703 return -EBUSY;
3704
3705 switch (b->type) {
3706 case V4L2_BUF_TYPE_VIDEO_CAPTURE: {
3707 struct vino_framebuffer *fb;
3708 unsigned int incoming, outgoing;
3709 int err;
3710
3711 // TODO: check queue type
3712
3713 err = vino_queue_get_incoming(&vcs->fb_queue, &incoming);
3714 if (err) {
3715 dprintk("vino_queue_get_incoming() failed\n");
3716 return -EINVAL;
3717 }
3718 err = vino_queue_get_outgoing(&vcs->fb_queue, &outgoing);
3719 if (err) {
3720 dprintk("vino_queue_get_outgoing() failed\n");
3721 return -EINVAL;
3722 }
3723
3724 dprintk("incoming = %d, outgoing = %d\n", incoming, outgoing);
3725
3726 if (outgoing == 0) {
3727 if (incoming == 0) {
3728 dprintk("no incoming or outgoing buffers\n");
3729 return -EINVAL;
3730 }
3731 if (nonblocking) {
3732 dprintk("non-blocking I/O was selected and "
3733 "there are no buffers to dequeue\n");
3734 return -EAGAIN;
3735 }
3736
3737 err = vino_wait_for_frame(vcs);
3738 if (err) {
3739 err = vino_wait_for_frame(vcs);
3740 if (err) {
3741 /* interrupted or
3742 * no frames captured because
3743 * of frame skipping */
3744 // vino_capture_failed(vcs);
3745 return -EIO;
3746 }
3747 }
3748 }
3749
3750 fb = vino_queue_remove(&vcs->fb_queue, &b->index);
3751 if (fb == NULL) {
3752 dprintk("vino_queue_remove() failed\n");
3753 return -EINVAL;
3754 }
3755
3756 err = vino_check_buffer(vcs, fb);
3757
3758 vino_v4l2_get_buffer_status(vcs, fb, b);
3759
3760 if (err)
3761 return -EIO;
3762
3763 break;
3764 }
3765 case V4L2_BUF_TYPE_VIDEO_OVERLAY:
3766 default:
3767 return -EINVAL;
3768 }
3769
3770 return 0;
3771 }
3772
3773 static int vino_v4l2_streamon(struct vino_channel_settings *vcs)
3774 {
3775 unsigned int incoming;
3776 int ret;
3777 if (vcs->reading)
3778 return -EBUSY;
3779
3780 if (vcs->streaming)
3781 return 0;
3782
3783 // TODO: check queue type
3784
3785 if (vino_queue_get_length(&vcs->fb_queue) < 1) {
3786 dprintk("no buffers allocated\n");
3787 return -EINVAL;
3788 }
3789
3790 ret = vino_queue_get_incoming(&vcs->fb_queue, &incoming);
3791 if (ret) {
3792 dprintk("vino_queue_get_incoming() failed\n");
3793 return -EINVAL;
3794 }
3795
3796 vcs->streaming = 1;
3797
3798 if (incoming > 0) {
3799 ret = vino_capture_next(vcs, 1);
3800 if (ret) {
3801 vcs->streaming = 0;
3802
3803 dprintk("couldn't start capture\n");
3804 return -EINVAL;
3805 }
3806 }
3807
3808 return 0;
3809 }
3810
3811 static int vino_v4l2_streamoff(struct vino_channel_settings *vcs)
3812 {
3813 if (vcs->reading)
3814 return -EBUSY;
3815
3816 if (!vcs->streaming)
3817 return 0;
3818
3819 vcs->streaming = 0;
3820 vino_capture_stop(vcs);
3821
3822 return 0;
3823 }
3824
3825 static int vino_v4l2_queryctrl(struct vino_channel_settings *vcs,
3826 struct v4l2_queryctrl *queryctrl)
3827 {
3828 unsigned long flags;
3829 int i;
3830 int err = 0;
3831
3832 spin_lock_irqsave(&vino_drvdata->input_lock, flags);
3833
3834 switch (vcs->input) {
3835 case VINO_INPUT_D1:
3836 for (i = 0; i < VINO_INDYCAM_V4L2_CONTROL_COUNT; i++) {
3837 if (vino_indycam_v4l2_controls[i].id ==
3838 queryctrl->id) {
3839 memcpy(queryctrl,
3840 &vino_indycam_v4l2_controls[i],
3841 sizeof(struct v4l2_queryctrl));
3842 queryctrl->reserved[0] = 0;
3843 goto found;
3844 }
3845 }
3846
3847 err = -EINVAL;
3848 break;
3849 case VINO_INPUT_COMPOSITE:
3850 case VINO_INPUT_SVIDEO:
3851 for (i = 0; i < VINO_SAA7191_V4L2_CONTROL_COUNT; i++) {
3852 if (vino_saa7191_v4l2_controls[i].id ==
3853 queryctrl->id) {
3854 memcpy(queryctrl,
3855 &vino_saa7191_v4l2_controls[i],
3856 sizeof(struct v4l2_queryctrl));
3857 queryctrl->reserved[0] = 0;
3858 goto found;
3859 }
3860 }
3861
3862 err = -EINVAL;
3863 break;
3864 default:
3865 err = -EINVAL;
3866 }
3867
3868 found:
3869 spin_unlock_irqrestore(&vino_drvdata->input_lock, flags);
3870
3871 return err;
3872 }
3873
3874 static int vino_v4l2_g_ctrl(struct vino_channel_settings *vcs,
3875 struct v4l2_control *control)
3876 {
3877 unsigned long flags;
3878 int i;
3879 int err = 0;
3880
3881 spin_lock_irqsave(&vino_drvdata->input_lock, flags);
3882
3883 switch (vcs->input) {
3884 case VINO_INPUT_D1: {
3885 struct indycam_control indycam_ctrl;
3886
3887 for (i = 0; i < VINO_INDYCAM_V4L2_CONTROL_COUNT; i++) {
3888 if (vino_indycam_v4l2_controls[i].id ==
3889 control->id) {
3890 goto found1;
3891 }
3892 }
3893
3894 err = -EINVAL;
3895 goto out;
3896
3897 found1:
3898 indycam_ctrl.type = vino_indycam_v4l2_controls[i].reserved[0];
3899
3900 err = i2c_camera_command(DECODER_INDYCAM_GET_CONTROL,
3901 &indycam_ctrl);
3902 if (err) {
3903 err = -EINVAL;
3904 goto out;
3905 }
3906
3907 control->value = indycam_ctrl.value;
3908 break;
3909 }
3910 case VINO_INPUT_COMPOSITE:
3911 case VINO_INPUT_SVIDEO: {
3912 struct saa7191_control saa7191_ctrl;
3913
3914 for (i = 0; i < VINO_SAA7191_V4L2_CONTROL_COUNT; i++) {
3915 if (vino_saa7191_v4l2_controls[i].id ==
3916 control->id) {
3917 goto found2;
3918 }
3919 }
3920
3921 err = -EINVAL;
3922 goto out;
3923
3924 found2:
3925 saa7191_ctrl.type = vino_saa7191_v4l2_controls[i].reserved[0];
3926
3927 err = i2c_decoder_command(DECODER_SAA7191_GET_CONTROL,
3928 &saa7191_ctrl);
3929 if (err) {
3930 err = -EINVAL;
3931 goto out;
3932 }
3933
3934 control->value = saa7191_ctrl.value;
3935 break;
3936 }
3937 default:
3938 err = -EINVAL;
3939 }
3940
3941 out:
3942 spin_unlock_irqrestore(&vino_drvdata->input_lock, flags);
3943
3944 return err;
3945 }
3946
3947 static int vino_v4l2_s_ctrl(struct vino_channel_settings *vcs,
3948 struct v4l2_control *control)
3949 {
3950 unsigned long flags;
3951 int i;
3952 int err = 0;
3953
3954 spin_lock_irqsave(&vino_drvdata->input_lock, flags);
3955
3956 if (!vino_is_input_owner(vcs)) {
3957 err = -EBUSY;
3958 goto out;
3959 }
3960
3961 switch (vcs->input) {
3962 case VINO_INPUT_D1: {
3963 struct indycam_control indycam_ctrl;
3964
3965 for (i = 0; i < VINO_INDYCAM_V4L2_CONTROL_COUNT; i++) {
3966 if (vino_indycam_v4l2_controls[i].id ==
3967 control->id) {
3968 if ((control->value >=
3969 vino_indycam_v4l2_controls[i].minimum)
3970 && (control->value <=
3971 vino_indycam_v4l2_controls[i].
3972 maximum)) {
3973 goto found1;
3974 } else {
3975 err = -ERANGE;
3976 goto out;
3977 }
3978 }
3979 }
3980
3981 err = -EINVAL;
3982 goto out;
3983
3984 found1:
3985 indycam_ctrl.type = vino_indycam_v4l2_controls[i].reserved[0];
3986 indycam_ctrl.value = control->value;
3987
3988 err = i2c_camera_command(DECODER_INDYCAM_SET_CONTROL,
3989 &indycam_ctrl);
3990 if (err)
3991 err = -EINVAL;
3992 break;
3993 }
3994 case VINO_INPUT_COMPOSITE:
3995 case VINO_INPUT_SVIDEO: {
3996 struct saa7191_control saa7191_ctrl;
3997
3998 for (i = 0; i < VINO_SAA7191_V4L2_CONTROL_COUNT; i++) {
3999 if (vino_saa7191_v4l2_controls[i].id ==
4000 control->id) {
4001 if ((control->value >=
4002 vino_saa7191_v4l2_controls[i].minimum)
4003 && (control->value <=
4004 vino_saa7191_v4l2_controls[i].
4005 maximum)) {
4006 goto found2;
4007 } else {
4008 err = -ERANGE;
4009 goto out;
4010 }
4011 }
4012 }
4013 err = -EINVAL;
4014 goto out;
4015
4016 found2:
4017 saa7191_ctrl.type = vino_saa7191_v4l2_controls[i].reserved[0];
4018 saa7191_ctrl.value = control->value;
4019
4020 err = i2c_decoder_command(DECODER_SAA7191_SET_CONTROL,
4021 &saa7191_ctrl);
4022 if (err)
4023 err = -EINVAL;
4024 break;
4025 }
4026 default:
4027 err = -EINVAL;
4028 }
4029
4030 out:
4031 spin_unlock_irqrestore(&vino_drvdata->input_lock, flags);
4032
4033 return err;
4034 }
4035
4036 /* File operations */
4037
4038 static int vino_open(struct inode *inode, struct file *file)
4039 {
4040 struct video_device *dev = video_devdata(file);
4041 struct vino_channel_settings *vcs = video_get_drvdata(dev);
4042 int ret = 0;
4043 dprintk("open(): channel = %c\n",
4044 (vcs->channel == VINO_CHANNEL_A) ? 'A' : 'B');
4045
4046 mutex_lock(&vcs->mutex);
4047
4048 if (vcs->users) {
4049 dprintk("open(): driver busy\n");
4050 ret = -EBUSY;
4051 goto out;
4052 }
4053
4054 ret = vino_acquire_input(vcs);
4055 if (ret) {
4056 dprintk("open(): vino_acquire_input() failed\n");
4057 goto out;
4058 }
4059
4060 vcs->users++;
4061
4062 out:
4063 mutex_unlock(&vcs->mutex);
4064
4065 dprintk("open(): %s!\n", ret ? "failed" : "complete");
4066
4067 return ret;
4068 }
4069
4070 static int vino_close(struct inode *inode, struct file *file)
4071 {
4072 struct video_device *dev = video_devdata(file);
4073 struct vino_channel_settings *vcs = video_get_drvdata(dev);
4074 dprintk("close():\n");
4075
4076 mutex_lock(&vcs->mutex);
4077
4078 vcs->users--;
4079
4080 if (!vcs->users) {
4081 vino_release_input(vcs);
4082
4083 /* stop DMA and free buffers */
4084 vino_capture_stop(vcs);
4085 vino_queue_free(&vcs->fb_queue);
4086 }
4087
4088 mutex_unlock(&vcs->mutex);
4089
4090 return 0;
4091 }
4092
4093 static void vino_vm_open(struct vm_area_struct *vma)
4094 {
4095 struct vino_framebuffer *fb = vma->vm_private_data;
4096
4097 fb->map_count++;
4098 dprintk("vino_vm_open(): count = %d\n", fb->map_count);
4099 }
4100
4101 static void vino_vm_close(struct vm_area_struct *vma)
4102 {
4103 struct vino_framebuffer *fb = vma->vm_private_data;
4104
4105 fb->map_count--;
4106 dprintk("vino_vm_close(): count = %d\n", fb->map_count);
4107 }
4108
4109 static struct vm_operations_struct vino_vm_ops = {
4110 .open = vino_vm_open,
4111 .close = vino_vm_close,
4112 };
4113
4114 static int vino_mmap(struct file *file, struct vm_area_struct *vma)
4115 {
4116 struct video_device *dev = video_devdata(file);
4117 struct vino_channel_settings *vcs = video_get_drvdata(dev);
4118
4119 unsigned long start = vma->vm_start;
4120 unsigned long size = vma->vm_end - vma->vm_start;
4121 unsigned long offset = vma->vm_pgoff << PAGE_SHIFT;
4122
4123 struct vino_framebuffer *fb = NULL;
4124 unsigned int i, length;
4125 int ret = 0;
4126
4127 dprintk("mmap():\n");
4128
4129 // TODO: reject mmap if already mapped
4130
4131 if (mutex_lock_interruptible(&vcs->mutex))
4132 return -EINTR;
4133
4134 if (vcs->reading) {
4135 ret = -EBUSY;
4136 goto out;
4137 }
4138
4139 // TODO: check queue type
4140
4141 if (!(vma->vm_flags & VM_WRITE)) {
4142 dprintk("mmap(): app bug: PROT_WRITE please\n");
4143 ret = -EINVAL;
4144 goto out;
4145 }
4146 if (!(vma->vm_flags & VM_SHARED)) {
4147 dprintk("mmap(): app bug: MAP_SHARED please\n");
4148 ret = -EINVAL;
4149 goto out;
4150 }
4151
4152 /* find the correct buffer using offset */
4153 length = vino_queue_get_length(&vcs->fb_queue);
4154 if (length == 0) {
4155 dprintk("mmap(): queue not initialized\n");
4156 ret = -EINVAL;
4157 goto out;
4158 }
4159
4160 for (i = 0; i < length; i++) {
4161 fb = vino_queue_get_buffer(&vcs->fb_queue, i);
4162 if (fb == NULL) {
4163 dprintk("mmap(): vino_queue_get_buffer() failed\n");
4164 ret = -EINVAL;
4165 goto out;
4166 }
4167
4168 if (fb->offset == offset)
4169 goto found;
4170 }
4171
4172 dprintk("mmap(): invalid offset = %lu\n", offset);
4173 ret = -EINVAL;
4174 goto out;
4175
4176 found:
4177 dprintk("mmap(): buffer = %d\n", i);
4178
4179 if (size > (fb->desc_table.page_count * PAGE_SIZE)) {
4180 dprintk("mmap(): failed: size = %lu > %lu\n",
4181 size, fb->desc_table.page_count * PAGE_SIZE);
4182 ret = -EINVAL;
4183 goto out;
4184 }
4185
4186 for (i = 0; i < fb->desc_table.page_count; i++) {
4187 unsigned long pfn =
4188 virt_to_phys((void *)fb->desc_table.virtual[i]) >>
4189 PAGE_SHIFT;
4190
4191 if (size < PAGE_SIZE)
4192 break;
4193
4194 // protection was: PAGE_READONLY
4195 if (remap_pfn_range(vma, start, pfn, PAGE_SIZE,
4196 vma->vm_page_prot)) {
4197 dprintk("mmap(): remap_pfn_range() failed\n");
4198 ret = -EAGAIN;
4199 goto out;
4200 }
4201
4202 start += PAGE_SIZE;
4203 size -= PAGE_SIZE;
4204 }
4205
4206 fb->map_count = 1;
4207
4208 vma->vm_flags |= VM_DONTEXPAND | VM_RESERVED;
4209 vma->vm_flags &= ~VM_IO;
4210 vma->vm_private_data = fb;
4211 vma->vm_file = file;
4212 vma->vm_ops = &vino_vm_ops;
4213
4214 out:
4215 mutex_unlock(&vcs->mutex);
4216
4217 return ret;
4218 }
4219
4220 static unsigned int vino_poll(struct file *file, poll_table *pt)
4221 {
4222 struct video_device *dev = video_devdata(file);
4223 struct vino_channel_settings *vcs = video_get_drvdata(dev);
4224 unsigned int outgoing;
4225 unsigned int ret = 0;
4226
4227 // lock mutex (?)
4228 // TODO: this has to be corrected for different read modes
4229
4230 dprintk("poll():\n");
4231
4232 if (vino_queue_get_outgoing(&vcs->fb_queue, &outgoing)) {
4233 dprintk("poll(): vino_queue_get_outgoing() failed\n");
4234 ret = POLLERR;
4235 goto error;
4236 }
4237 if (outgoing > 0)
4238 goto over;
4239
4240 poll_wait(file, &vcs->fb_queue.frame_wait_queue, pt);
4241
4242 if (vino_queue_get_outgoing(&vcs->fb_queue, &outgoing)) {
4243 dprintk("poll(): vino_queue_get_outgoing() failed\n");
4244 ret = POLLERR;
4245 goto error;
4246 }
4247
4248 over:
4249 dprintk("poll(): data %savailable\n",
4250 (outgoing > 0) ? "" : "not ");
4251
4252 if (outgoing > 0)
4253 ret = POLLIN | POLLRDNORM;
4254
4255 error:
4256
4257 return ret;
4258 }
4259
4260 static int vino_do_ioctl(struct inode *inode, struct file *file,
4261 unsigned int cmd, void *arg)
4262 {
4263 struct video_device *dev = video_devdata(file);
4264 struct vino_channel_settings *vcs = video_get_drvdata(dev);
4265
4266 #ifdef VINO_DEBUG
4267 switch (_IOC_TYPE(cmd)) {
4268 case 'v':
4269 dprintk("ioctl(): V4L1 unsupported (0x%08x)\n", cmd);
4270 break;
4271 case 'V':
4272 dprintk("ioctl(): V4L2 %s (0x%08x)\n",
4273 v4l2_ioctl_names[_IOC_NR(cmd)], cmd);
4274 break;
4275 default:
4276 dprintk("ioctl(): unsupported command 0x%08x\n", cmd);
4277 }
4278 #endif
4279
4280 switch (cmd) {
4281 /* V4L2 interface */
4282 case VIDIOC_QUERYCAP: {
4283 vino_v4l2_querycap(arg);
4284 break;
4285 }
4286 case VIDIOC_ENUMINPUT: {
4287 return vino_v4l2_enuminput(vcs, arg);
4288 }
4289 case VIDIOC_G_INPUT: {
4290 return vino_v4l2_g_input(vcs, arg);
4291 }
4292 case VIDIOC_S_INPUT: {
4293 return vino_v4l2_s_input(vcs, arg);
4294 }
4295 case VIDIOC_ENUMSTD: {
4296 return vino_v4l2_enumstd(vcs, arg);
4297 }
4298 case VIDIOC_QUERYSTD: {
4299 return vino_v4l2_querystd(vcs, arg);
4300 }
4301 case VIDIOC_G_STD: {
4302 return vino_v4l2_g_std(vcs, arg);
4303 }
4304 case VIDIOC_S_STD: {
4305 return vino_v4l2_s_std(vcs, arg);
4306 }
4307 case VIDIOC_ENUM_FMT: {
4308 return vino_v4l2_enum_fmt(vcs, arg);
4309 }
4310 case VIDIOC_TRY_FMT: {
4311 return vino_v4l2_try_fmt(vcs, arg);
4312 }
4313 case VIDIOC_G_FMT: {
4314 return vino_v4l2_g_fmt(vcs, arg);
4315 }
4316 case VIDIOC_S_FMT: {
4317 return vino_v4l2_s_fmt(vcs, arg);
4318 }
4319 case VIDIOC_CROPCAP: {
4320 return vino_v4l2_cropcap(vcs, arg);
4321 }
4322 case VIDIOC_G_CROP: {
4323 return vino_v4l2_g_crop(vcs, arg);
4324 }
4325 case VIDIOC_S_CROP: {
4326 return vino_v4l2_s_crop(vcs, arg);
4327 }
4328 case VIDIOC_G_PARM: {
4329 return vino_v4l2_g_parm(vcs, arg);
4330 }
4331 case VIDIOC_S_PARM: {
4332 return vino_v4l2_s_parm(vcs, arg);
4333 }
4334 case VIDIOC_REQBUFS: {
4335 return vino_v4l2_reqbufs(vcs, arg);
4336 }
4337 case VIDIOC_QUERYBUF: {
4338 return vino_v4l2_querybuf(vcs, arg);
4339 }
4340 case VIDIOC_QBUF: {
4341 return vino_v4l2_qbuf(vcs, arg);
4342 }
4343 case VIDIOC_DQBUF: {
4344 return vino_v4l2_dqbuf(vcs, arg, file->f_flags & O_NONBLOCK);
4345 }
4346 case VIDIOC_STREAMON: {
4347 return vino_v4l2_streamon(vcs);
4348 }
4349 case VIDIOC_STREAMOFF: {
4350 return vino_v4l2_streamoff(vcs);
4351 }
4352 case VIDIOC_QUERYCTRL: {
4353 return vino_v4l2_queryctrl(vcs, arg);
4354 }
4355 case VIDIOC_G_CTRL: {
4356 return vino_v4l2_g_ctrl(vcs, arg);
4357 }
4358 case VIDIOC_S_CTRL: {
4359 return vino_v4l2_s_ctrl(vcs, arg);
4360 }
4361 default:
4362 return -ENOIOCTLCMD;
4363 }
4364
4365 return 0;
4366 }
4367
4368 static int vino_ioctl(struct inode *inode, struct file *file,
4369 unsigned int cmd, unsigned long arg)
4370 {
4371 struct video_device *dev = video_devdata(file);
4372 struct vino_channel_settings *vcs = video_get_drvdata(dev);
4373 int ret;
4374
4375 if (mutex_lock_interruptible(&vcs->mutex))
4376 return -EINTR;
4377
4378 ret = video_usercopy(inode, file, cmd, arg, vino_do_ioctl);
4379
4380 mutex_unlock(&vcs->mutex);
4381
4382 return ret;
4383 }
4384
4385 /* Initialization and cleanup */
4386
4387 // __initdata
4388 static int vino_init_stage = 0;
4389
4390 static const struct file_operations vino_fops = {
4391 .owner = THIS_MODULE,
4392 .open = vino_open,
4393 .release = vino_close,
4394 .ioctl = vino_ioctl,
4395 .mmap = vino_mmap,
4396 .poll = vino_poll,
4397 .llseek = no_llseek,
4398 };
4399
4400 static struct video_device v4l_device_template = {
4401 .name = "NOT SET",
4402 //.type = VID_TYPE_CAPTURE | VID_TYPE_SUBCAPTURE |
4403 // VID_TYPE_CLIPPING | VID_TYPE_SCALES, VID_TYPE_OVERLAY
4404 .fops = &vino_fops,
4405 .minor = -1,
4406 };
4407
4408 static void vino_module_cleanup(int stage)
4409 {
4410 switch(stage) {
4411 case 10:
4412 video_unregister_device(vino_drvdata->b.v4l_device);
4413 vino_drvdata->b.v4l_device = NULL;
4414 case 9:
4415 video_unregister_device(vino_drvdata->a.v4l_device);
4416 vino_drvdata->a.v4l_device = NULL;
4417 case 8:
4418 vino_i2c_del_bus();
4419 case 7:
4420 free_irq(SGI_VINO_IRQ, NULL);
4421 case 6:
4422 if (vino_drvdata->b.v4l_device) {
4423 video_device_release(vino_drvdata->b.v4l_device);
4424 vino_drvdata->b.v4l_device = NULL;
4425 }
4426 case 5:
4427 if (vino_drvdata->a.v4l_device) {
4428 video_device_release(vino_drvdata->a.v4l_device);
4429 vino_drvdata->a.v4l_device = NULL;
4430 }
4431 case 4:
4432 /* all entries in dma_cpu dummy table have the same address */
4433 dma_unmap_single(NULL,
4434 vino_drvdata->dummy_desc_table.dma_cpu[0],
4435 PAGE_SIZE, DMA_FROM_DEVICE);
4436 dma_free_coherent(NULL, VINO_DUMMY_DESC_COUNT
4437 * sizeof(dma_addr_t),
4438 (void *)vino_drvdata->
4439 dummy_desc_table.dma_cpu,
4440 vino_drvdata->dummy_desc_table.dma);
4441 case 3:
4442 free_page(vino_drvdata->dummy_page);
4443 case 2:
4444 kfree(vino_drvdata);
4445 case 1:
4446 iounmap(vino);
4447 case 0:
4448 break;
4449 default:
4450 dprintk("vino_module_cleanup(): invalid cleanup stage = %d\n",
4451 stage);
4452 }
4453 }
4454
4455 static int vino_probe(void)
4456 {
4457 unsigned long rev_id;
4458
4459 if (ip22_is_fullhouse()) {
4460 printk(KERN_ERR "VINO doesn't exist in IP22 Fullhouse\n");
4461 return -ENODEV;
4462 }
4463
4464 if (!(sgimc->systemid & SGIMC_SYSID_EPRESENT)) {
4465 printk(KERN_ERR "VINO is not found (EISA BUS not present)\n");
4466 return -ENODEV;
4467 }
4468
4469 vino = (struct sgi_vino *)ioremap(VINO_BASE, sizeof(struct sgi_vino));
4470 if (!vino) {
4471 printk(KERN_ERR "VINO: ioremap() failed\n");
4472 return -EIO;
4473 }
4474 vino_init_stage++;
4475
4476 if (get_dbe(rev_id, &(vino->rev_id))) {
4477 printk(KERN_ERR "Failed to read VINO revision register\n");
4478 vino_module_cleanup(vino_init_stage);
4479 return -ENODEV;
4480 }
4481
4482 if (VINO_ID_VALUE(rev_id) != VINO_CHIP_ID) {
4483 printk(KERN_ERR "Unknown VINO chip ID (Rev/ID: 0x%02lx)\n",
4484 rev_id);
4485 vino_module_cleanup(vino_init_stage);
4486 return -ENODEV;
4487 }
4488
4489 printk(KERN_INFO "VINO revision %ld found\n", VINO_REV_NUM(rev_id));
4490
4491 return 0;
4492 }
4493
4494 static int vino_init(void)
4495 {
4496 dma_addr_t dma_dummy_address;
4497 int i;
4498
4499 vino_drvdata = kzalloc(sizeof(struct vino_settings), GFP_KERNEL);
4500 if (!vino_drvdata) {
4501 vino_module_cleanup(vino_init_stage);
4502 return -ENOMEM;
4503 }
4504 vino_init_stage++;
4505
4506 /* create a dummy dma descriptor */
4507 vino_drvdata->dummy_page = get_zeroed_page(GFP_KERNEL | GFP_DMA);
4508 if (!vino_drvdata->dummy_page) {
4509 vino_module_cleanup(vino_init_stage);
4510 return -ENOMEM;
4511 }
4512 vino_init_stage++;
4513
4514 // TODO: use page_count in dummy_desc_table
4515
4516 vino_drvdata->dummy_desc_table.dma_cpu =
4517 dma_alloc_coherent(NULL,
4518 VINO_DUMMY_DESC_COUNT * sizeof(dma_addr_t),
4519 &vino_drvdata->dummy_desc_table.dma,
4520 GFP_KERNEL | GFP_DMA);
4521 if (!vino_drvdata->dummy_desc_table.dma_cpu) {
4522 vino_module_cleanup(vino_init_stage);
4523 return -ENOMEM;
4524 }
4525 vino_init_stage++;
4526
4527 dma_dummy_address = dma_map_single(NULL,
4528 (void *)vino_drvdata->dummy_page,
4529 PAGE_SIZE, DMA_FROM_DEVICE);
4530 for (i = 0; i < VINO_DUMMY_DESC_COUNT; i++) {
4531 vino_drvdata->dummy_desc_table.dma_cpu[i] = dma_dummy_address;
4532 }
4533
4534 /* initialize VINO */
4535
4536 vino->control = 0;
4537 vino->a.next_4_desc = vino_drvdata->dummy_desc_table.dma;
4538 vino->b.next_4_desc = vino_drvdata->dummy_desc_table.dma;
4539 udelay(VINO_DESC_FETCH_DELAY);
4540
4541 vino->intr_status = 0;
4542
4543 vino->a.fifo_thres = VINO_FIFO_THRESHOLD_DEFAULT;
4544 vino->b.fifo_thres = VINO_FIFO_THRESHOLD_DEFAULT;
4545
4546 return 0;
4547 }
4548
4549 static int vino_init_channel_settings(struct vino_channel_settings *vcs,
4550 unsigned int channel, const char *name)
4551 {
4552 vcs->channel = channel;
4553 vcs->input = VINO_INPUT_NONE;
4554 vcs->alpha = 0;
4555 vcs->users = 0;
4556 vcs->data_format = VINO_DATA_FMT_GREY;
4557 vcs->data_norm = VINO_DATA_NORM_NTSC;
4558 vcs->decimation = 1;
4559 vino_set_default_clipping(vcs);
4560 vino_set_default_framerate(vcs);
4561
4562 vcs->capturing = 0;
4563
4564 mutex_init(&vcs->mutex);
4565 spin_lock_init(&vcs->capture_lock);
4566
4567 mutex_init(&vcs->fb_queue.queue_mutex);
4568 spin_lock_init(&vcs->fb_queue.queue_lock);
4569 init_waitqueue_head(&vcs->fb_queue.frame_wait_queue);
4570
4571 vcs->v4l_device = video_device_alloc();
4572 if (!vcs->v4l_device) {
4573 vino_module_cleanup(vino_init_stage);
4574 return -ENOMEM;
4575 }
4576 vino_init_stage++;
4577
4578 memcpy(vcs->v4l_device, &v4l_device_template,
4579 sizeof(struct video_device));
4580 strcpy(vcs->v4l_device->name, name);
4581 vcs->v4l_device->release = video_device_release;
4582
4583 video_set_drvdata(vcs->v4l_device, vcs);
4584
4585 return 0;
4586 }
4587
4588 static int __init vino_module_init(void)
4589 {
4590 int ret;
4591
4592 printk(KERN_INFO "SGI VINO driver version %s\n",
4593 VINO_MODULE_VERSION);
4594
4595 ret = vino_probe();
4596 if (ret)
4597 return ret;
4598
4599 ret = vino_init();
4600 if (ret)
4601 return ret;
4602
4603 /* initialize data structures */
4604
4605 spin_lock_init(&vino_drvdata->vino_lock);
4606 spin_lock_init(&vino_drvdata->input_lock);
4607
4608 ret = vino_init_channel_settings(&vino_drvdata->a, VINO_CHANNEL_A,
4609 vino_v4l_device_name_a);
4610 if (ret)
4611 return ret;
4612
4613 ret = vino_init_channel_settings(&vino_drvdata->b, VINO_CHANNEL_B,
4614 vino_v4l_device_name_b);
4615 if (ret)
4616 return ret;
4617
4618 /* initialize hardware and register V4L devices */
4619
4620 ret = request_irq(SGI_VINO_IRQ, vino_interrupt, 0,
4621 vino_driver_description, NULL);
4622 if (ret) {
4623 printk(KERN_ERR "VINO: requesting IRQ %02d failed\n",
4624 SGI_VINO_IRQ);
4625 vino_module_cleanup(vino_init_stage);
4626 return -EAGAIN;
4627 }
4628 vino_init_stage++;
4629
4630 ret = vino_i2c_add_bus();
4631 if (ret) {
4632 printk(KERN_ERR "VINO I2C bus registration failed\n");
4633 vino_module_cleanup(vino_init_stage);
4634 return ret;
4635 }
4636 vino_init_stage++;
4637
4638 ret = video_register_device(vino_drvdata->a.v4l_device,
4639 VFL_TYPE_GRABBER, -1);
4640 if (ret < 0) {
4641 printk(KERN_ERR "VINO channel A Video4Linux-device "
4642 "registration failed\n");
4643 vino_module_cleanup(vino_init_stage);
4644 return -EINVAL;
4645 }
4646 vino_init_stage++;
4647
4648 ret = video_register_device(vino_drvdata->b.v4l_device,
4649 VFL_TYPE_GRABBER, -1);
4650 if (ret < 0) {
4651 printk(KERN_ERR "VINO channel B Video4Linux-device "
4652 "registration failed\n");
4653 vino_module_cleanup(vino_init_stage);
4654 return -EINVAL;
4655 }
4656 vino_init_stage++;
4657
4658 #if defined(CONFIG_KMOD) && defined(MODULE)
4659 request_module("saa7191");
4660 request_module("indycam");
4661 #endif
4662
4663 dprintk("init complete!\n");
4664
4665 return 0;
4666 }
4667
4668 static void __exit vino_module_exit(void)
4669 {
4670 dprintk("exiting, stage = %d ...\n", vino_init_stage);
4671 vino_module_cleanup(vino_init_stage);
4672 dprintk("cleanup complete, exit!\n");
4673 }
4674
4675 module_init(vino_module_init);
4676 module_exit(vino_module_exit);
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