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V4L/DVB (3326): Fix stereo and standard reporting of msp3400 (esp. for radio)
[linux-2.6/suspend2-2.6.18.git] / drivers / media / video / vino.c
blob71b28e9e085021e1fdae979e4edf7fe6b270a353
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/moduleparam.h>
32 #include <linux/time.h>
33 #include <linux/version.h>
34
35 #ifdef CONFIG_KMOD
36 #include <linux/kmod.h>
37 #endif
38
39 #include <linux/i2c.h>
40 #include <linux/i2c-algo-sgi.h>
41
42 #include <linux/videodev.h>
43 #include <linux/videodev2.h>
44 #include <linux/video_decoder.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 semaphore queue_sem;
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 semaphore sem;
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_sgi_del_bus(&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 down(&q->queue_sem);
1135
1136 vino_queue_free_with_count(q, q->length);
1137
1138 up(&q->queue_sem);
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 down(&q->queue_sem);
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 up(&q->queue_sem);
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 /* and set current state */
2080 set_current_state(TASK_INTERRUPTIBLE);
2081
2082 /* to ensure that schedule_timeout will return immediately
2083 * if VINO interrupt was triggred meanwhile */
2084 schedule_timeout(HZ / 10);
2085
2086 if (signal_pending(current))
2087 err = -EINTR;
2088
2089 remove_wait_queue(&vcs->fb_queue.frame_wait_queue, &wait);
2090
2091 dprintk("vino_wait_for_frame(): waiting for frame %s\n",
2092 err ? "failed" : "ok");
2093
2094 return err;
2095 }
2096
2097 /* the function assumes that PAGE_SIZE % 4 == 0 */
2098 static void vino_convert_to_rgba(struct vino_framebuffer *fb) {
2099 unsigned char *pageptr;
2100 unsigned int page, i;
2101 unsigned char a;
2102
2103 for (page = 0; page < fb->desc_table.page_count; page++) {
2104 pageptr = (unsigned char *)fb->desc_table.virtual[page];
2105
2106 for (i = 0; i < PAGE_SIZE; i += 4) {
2107 a = pageptr[0];
2108 pageptr[0] = pageptr[3];
2109 pageptr[1] = pageptr[2];
2110 pageptr[2] = pageptr[1];
2111 pageptr[3] = a;
2112 pageptr += 4;
2113 }
2114 }
2115 }
2116
2117 /* checks if the buffer is in correct state and syncs data */
2118 static int vino_check_buffer(struct vino_channel_settings *vcs,
2119 struct vino_framebuffer *fb)
2120 {
2121 int err = 0;
2122 unsigned long flags;
2123
2124 dprintk("vino_check_buffer():\n");
2125
2126 spin_lock_irqsave(&fb->state_lock, flags);
2127 switch (fb->state) {
2128 case VINO_FRAMEBUFFER_IN_USE:
2129 err = -EIO;
2130 break;
2131 case VINO_FRAMEBUFFER_READY:
2132 vino_sync_buffer(fb);
2133 fb->state = VINO_FRAMEBUFFER_UNUSED;
2134 break;
2135 default:
2136 err = -EINVAL;
2137 }
2138 spin_unlock_irqrestore(&fb->state_lock, flags);
2139
2140 if (!err) {
2141 if (vino_pixel_conversion
2142 && (fb->data_format == VINO_DATA_FMT_RGB32)) {
2143 vino_convert_to_rgba(fb);
2144 }
2145 } else if (err && (err != -EINVAL)) {
2146 dprintk("vino_check_buffer(): buffer not ready\n");
2147
2148 spin_lock_irqsave(&vino_drvdata->vino_lock, flags);
2149 vino_dma_stop(vcs);
2150 vino_clear_interrupt(vcs);
2151 spin_unlock_irqrestore(&vino_drvdata->vino_lock, flags);
2152 }
2153
2154 return err;
2155 }
2156
2157 /* forcefully terminates capture */
2158 static void vino_capture_stop(struct vino_channel_settings *vcs)
2159 {
2160 unsigned int incoming = 0, outgoing = 0, id;
2161 unsigned long flags, flags2;
2162
2163 dprintk("vino_capture_stop():\n");
2164
2165 spin_lock_irqsave(&vcs->capture_lock, flags);
2166
2167 /* unset capturing to stop queue processing */
2168 vcs->capturing = 0;
2169
2170 spin_lock_irqsave(&vino_drvdata->vino_lock, flags2);
2171
2172 vino_dma_stop(vcs);
2173 vino_clear_interrupt(vcs);
2174
2175 spin_unlock_irqrestore(&vino_drvdata->vino_lock, flags2);
2176
2177 /* remove all items from the queue */
2178 if (vino_queue_get_incoming(&vcs->fb_queue, &incoming)) {
2179 dprintk("vino_capture_stop(): "
2180 "vino_queue_get_incoming() failed\n");
2181 goto out;
2182 }
2183 while (incoming > 0) {
2184 vino_queue_transfer(&vcs->fb_queue);
2185
2186 if (vino_queue_get_incoming(&vcs->fb_queue, &incoming)) {
2187 dprintk("vino_capture_stop(): "
2188 "vino_queue_get_incoming() failed\n");
2189 goto out;
2190 }
2191 }
2192
2193 if (vino_queue_get_outgoing(&vcs->fb_queue, &outgoing)) {
2194 dprintk("vino_capture_stop(): "
2195 "vino_queue_get_outgoing() failed\n");
2196 goto out;
2197 }
2198 while (outgoing > 0) {
2199 vino_queue_remove(&vcs->fb_queue, &id);
2200
2201 if (vino_queue_get_outgoing(&vcs->fb_queue, &outgoing)) {
2202 dprintk("vino_capture_stop(): "
2203 "vino_queue_get_outgoing() failed\n");
2204 goto out;
2205 }
2206 }
2207
2208 out:
2209 spin_unlock_irqrestore(&vcs->capture_lock, flags);
2210 }
2211
2212 #if 0
2213 static int vino_capture_failed(struct vino_channel_settings *vcs)
2214 {
2215 struct vino_framebuffer *fb;
2216 unsigned long flags;
2217 unsigned int i;
2218 int ret;
2219
2220 dprintk("vino_capture_failed():\n");
2221
2222 spin_lock_irqsave(&vino_drvdata->vino_lock, flags);
2223
2224 vino_dma_stop(vcs);
2225 vino_clear_interrupt(vcs);
2226
2227 spin_unlock_irqrestore(&vino_drvdata->vino_lock, flags);
2228
2229 ret = vino_queue_get_incoming(&vcs->fb_queue, &i);
2230 if (ret == VINO_QUEUE_ERROR) {
2231 dprintk("vino_queue_get_incoming() failed\n");
2232 return -EINVAL;
2233 }
2234 if (i == 0) {
2235 /* no buffers to process */
2236 return 0;
2237 }
2238
2239 fb = vino_queue_peek(&vcs->fb_queue, &i);
2240 if (fb == NULL) {
2241 dprintk("vino_queue_peek() failed\n");
2242 return -EINVAL;
2243 }
2244
2245 spin_lock_irqsave(&fb->state_lock, flags);
2246 if (fb->state == VINO_FRAMEBUFFER_IN_USE) {
2247 fb->state = VINO_FRAMEBUFFER_UNUSED;
2248 vino_queue_transfer(&vcs->fb_queue);
2249 vino_queue_remove(&vcs->fb_queue, &i);
2250 /* we should actually discard the newest frame,
2251 * but who cares ... */
2252 }
2253 spin_unlock_irqrestore(&fb->state_lock, flags);
2254
2255 return 0;
2256 }
2257 #endif
2258
2259 static void vino_skip_frame(struct vino_channel_settings *vcs)
2260 {
2261 struct vino_framebuffer *fb;
2262 unsigned long flags;
2263 unsigned int id;
2264
2265 spin_lock_irqsave(&vcs->capture_lock, flags);
2266 fb = vino_queue_peek(&vcs->fb_queue, &id);
2267 if (!fb) {
2268 spin_unlock_irqrestore(&vcs->capture_lock, flags);
2269 dprintk("vino_skip_frame(): vino_queue_peek() failed!\n");
2270 return;
2271 }
2272 spin_unlock_irqrestore(&vcs->capture_lock, flags);
2273
2274 spin_lock_irqsave(&fb->state_lock, flags);
2275 fb->state = VINO_FRAMEBUFFER_UNUSED;
2276 spin_unlock_irqrestore(&fb->state_lock, flags);
2277
2278 vino_capture_next(vcs, 0);
2279 }
2280
2281 static void vino_frame_done(struct vino_channel_settings *vcs)
2282 {
2283 struct vino_framebuffer *fb;
2284 unsigned long flags;
2285
2286 spin_lock_irqsave(&vcs->capture_lock, flags);
2287 fb = vino_queue_transfer(&vcs->fb_queue);
2288 if (!fb) {
2289 spin_unlock_irqrestore(&vcs->capture_lock, flags);
2290 dprintk("vino_frame_done(): vino_queue_transfer() failed!\n");
2291 return;
2292 }
2293 spin_unlock_irqrestore(&vcs->capture_lock, flags);
2294
2295 fb->frame_counter = vcs->int_data.frame_counter;
2296 memcpy(&fb->timestamp, &vcs->int_data.timestamp,
2297 sizeof(struct timeval));
2298
2299 spin_lock_irqsave(&fb->state_lock, flags);
2300 if (fb->state == VINO_FRAMEBUFFER_IN_USE)
2301 fb->state = VINO_FRAMEBUFFER_READY;
2302 spin_unlock_irqrestore(&fb->state_lock, flags);
2303
2304 wake_up(&vcs->fb_queue.frame_wait_queue);
2305
2306 vino_capture_next(vcs, 0);
2307 }
2308
2309 static void vino_capture_tasklet(unsigned long channel) {
2310 struct vino_channel_settings *vcs;
2311
2312 vcs = (channel == VINO_CHANNEL_A)
2313 ? &vino_drvdata->a : &vino_drvdata->b;
2314
2315 if (vcs->int_data.skip)
2316 vcs->int_data.skip_count++;
2317
2318 if (vcs->int_data.skip && (vcs->int_data.skip_count
2319 <= VINO_MAX_FRAME_SKIP_COUNT)) {
2320 vino_skip_frame(vcs);
2321 } else {
2322 vcs->int_data.skip_count = 0;
2323 vino_frame_done(vcs);
2324 }
2325 }
2326
2327 static irqreturn_t vino_interrupt(int irq, void *dev_id, struct pt_regs *regs)
2328 {
2329 u32 ctrl, intr;
2330 unsigned int fc_a, fc_b;
2331 int handled_a = 0, skip_a = 0, done_a = 0;
2332 int handled_b = 0, skip_b = 0, done_b = 0;
2333
2334 #ifdef VINO_DEBUG_INT
2335 int loop = 0;
2336 unsigned int line_count = vino->a.line_count,
2337 page_index = vino->a.page_index,
2338 field_counter = vino->a.field_counter,
2339 start_desc_tbl = vino->a.start_desc_tbl,
2340 next_4_desc = vino->a.next_4_desc;
2341 unsigned int line_count_2,
2342 page_index_2,
2343 field_counter_2,
2344 start_desc_tbl_2,
2345 next_4_desc_2;
2346 #endif
2347
2348 spin_lock(&vino_drvdata->vino_lock);
2349
2350 while ((intr = vino->intr_status)) {
2351 fc_a = vino->a.field_counter >> 1;
2352 fc_b = vino->b.field_counter >> 1;
2353
2354 /* handle error-interrupts in some special way ?
2355 * --> skips frames */
2356 if (intr & VINO_INTSTAT_A) {
2357 if (intr & VINO_INTSTAT_A_EOF) {
2358 vino_drvdata->a.field++;
2359 if (vino_drvdata->a.field > 1) {
2360 vino_dma_stop(&vino_drvdata->a);
2361 vino_clear_interrupt(&vino_drvdata->a);
2362 vino_drvdata->a.field = 0;
2363 done_a = 1;
2364 } else {
2365 if (vino->a.page_index
2366 != vino_drvdata->a.line_size) {
2367 vino->a.line_count = 0;
2368 vino->a.page_index =
2369 vino_drvdata->
2370 a.line_size;
2371 vino->a.next_4_desc =
2372 vino->a.start_desc_tbl;
2373 }
2374 }
2375 dprintk("channel A end-of-field "
2376 "interrupt: %04x\n", intr);
2377 } else {
2378 vino_dma_stop(&vino_drvdata->a);
2379 vino_clear_interrupt(&vino_drvdata->a);
2380 vino_drvdata->a.field = 0;
2381 skip_a = 1;
2382 dprintk("channel A error interrupt: %04x\n",
2383 intr);
2384 }
2385
2386 #ifdef VINO_DEBUG_INT
2387 line_count_2 = vino->a.line_count;
2388 page_index_2 = vino->a.page_index;
2389 field_counter_2 = vino->a.field_counter;
2390 start_desc_tbl_2 = vino->a.start_desc_tbl;
2391 next_4_desc_2 = vino->a.next_4_desc;
2392
2393 printk("intr = %04x, loop = %d, field = %d\n",
2394 intr, loop, vino_drvdata->a.field);
2395 printk("1- line count = %04d, page index = %04d, "
2396 "start = %08x, next = %08x\n"
2397 " fieldc = %d, framec = %d\n",
2398 line_count, page_index, start_desc_tbl,
2399 next_4_desc, field_counter, fc_a);
2400 printk("12-line count = %04d, page index = %04d, "
2401 " start = %08x, next = %08x\n",
2402 line_count_2, page_index_2, start_desc_tbl_2,
2403 next_4_desc_2);
2404
2405 if (done_a)
2406 printk("\n");
2407 #endif
2408 }
2409
2410 if (intr & VINO_INTSTAT_B) {
2411 if (intr & VINO_INTSTAT_B_EOF) {
2412 vino_drvdata->b.field++;
2413 if (vino_drvdata->b.field > 1) {
2414 vino_dma_stop(&vino_drvdata->b);
2415 vino_clear_interrupt(&vino_drvdata->b);
2416 vino_drvdata->b.field = 0;
2417 done_b = 1;
2418 }
2419 dprintk("channel B end-of-field "
2420 "interrupt: %04x\n", intr);
2421 } else {
2422 vino_dma_stop(&vino_drvdata->b);
2423 vino_clear_interrupt(&vino_drvdata->b);
2424 vino_drvdata->b.field = 0;
2425 skip_b = 1;
2426 dprintk("channel B error interrupt: %04x\n",
2427 intr);
2428 }
2429 }
2430
2431 /* Always remember to clear interrupt status.
2432 * Disable VINO interrupts while we do this. */
2433 ctrl = vino->control;
2434 vino->control = ctrl & ~(VINO_CTRL_A_INT | VINO_CTRL_B_INT);
2435 vino->intr_status = ~intr;
2436 vino->control = ctrl;
2437
2438 spin_unlock(&vino_drvdata->vino_lock);
2439
2440 if ((!handled_a) && (done_a || skip_a)) {
2441 if (!skip_a) {
2442 do_gettimeofday(&vino_drvdata->
2443 a.int_data.timestamp);
2444 vino_drvdata->a.int_data.frame_counter = fc_a;
2445 }
2446 vino_drvdata->a.int_data.skip = skip_a;
2447
2448 dprintk("channel A %s, interrupt: %d\n",
2449 skip_a ? "skipping frame" : "frame done",
2450 intr);
2451 tasklet_hi_schedule(&vino_tasklet_a);
2452 handled_a = 1;
2453 }
2454
2455 if ((!handled_b) && (done_b || skip_b)) {
2456 if (!skip_b) {
2457 do_gettimeofday(&vino_drvdata->
2458 b.int_data.timestamp);
2459 vino_drvdata->b.int_data.frame_counter = fc_b;
2460 }
2461 vino_drvdata->b.int_data.skip = skip_b;
2462
2463 dprintk("channel B %s, interrupt: %d\n",
2464 skip_b ? "skipping frame" : "frame done",
2465 intr);
2466 tasklet_hi_schedule(&vino_tasklet_b);
2467 handled_b = 1;
2468 }
2469
2470 #ifdef VINO_DEBUG_INT
2471 loop++;
2472 #endif
2473 spin_lock(&vino_drvdata->vino_lock);
2474 }
2475
2476 spin_unlock(&vino_drvdata->vino_lock);
2477
2478 return IRQ_HANDLED;
2479 }
2480
2481 /* VINO video input management */
2482
2483 static int vino_get_saa7191_input(int input)
2484 {
2485 switch (input) {
2486 case VINO_INPUT_COMPOSITE:
2487 return SAA7191_INPUT_COMPOSITE;
2488 case VINO_INPUT_SVIDEO:
2489 return SAA7191_INPUT_SVIDEO;
2490 default:
2491 printk(KERN_ERR "VINO: vino_get_saa7191_input(): "
2492 "invalid input!\n");
2493 return -1;
2494 }
2495 }
2496
2497 static int vino_get_saa7191_norm(unsigned int data_norm)
2498 {
2499 switch (data_norm) {
2500 case VINO_DATA_NORM_AUTO:
2501 return SAA7191_NORM_AUTO;
2502 case VINO_DATA_NORM_AUTO_EXT:
2503 return SAA7191_NORM_AUTO_EXT;
2504 case VINO_DATA_NORM_PAL:
2505 return SAA7191_NORM_PAL;
2506 case VINO_DATA_NORM_NTSC:
2507 return SAA7191_NORM_NTSC;
2508 case VINO_DATA_NORM_SECAM:
2509 return SAA7191_NORM_SECAM;
2510 default:
2511 printk(KERN_ERR "VINO: vino_get_saa7191_norm(): "
2512 "invalid norm!\n");
2513 return -1;
2514 }
2515 }
2516
2517 static int vino_get_from_saa7191_norm(int saa7191_norm)
2518 {
2519 switch (saa7191_norm) {
2520 case SAA7191_NORM_PAL:
2521 return VINO_DATA_NORM_PAL;
2522 case SAA7191_NORM_NTSC:
2523 return VINO_DATA_NORM_NTSC;
2524 case SAA7191_NORM_SECAM:
2525 return VINO_DATA_NORM_SECAM;
2526 default:
2527 printk(KERN_ERR "VINO: vino_get_from_saa7191_norm(): "
2528 "invalid norm!\n");
2529 return VINO_DATA_NORM_NONE;
2530 }
2531 }
2532
2533 static int vino_saa7191_set_norm(unsigned int *data_norm)
2534 {
2535 int saa7191_norm, new_data_norm;
2536 int err = 0;
2537
2538 saa7191_norm = vino_get_saa7191_norm(*data_norm);
2539
2540 err = i2c_decoder_command(DECODER_SAA7191_SET_NORM,
2541 &saa7191_norm);
2542 if (err)
2543 goto out;
2544
2545 if ((*data_norm == VINO_DATA_NORM_AUTO)
2546 || (*data_norm == VINO_DATA_NORM_AUTO_EXT)) {
2547 struct saa7191_status status;
2548
2549 err = i2c_decoder_command(DECODER_SAA7191_GET_STATUS,
2550 &status);
2551 if (err)
2552 goto out;
2553
2554 new_data_norm =
2555 vino_get_from_saa7191_norm(status.norm);
2556 if (new_data_norm == VINO_DATA_NORM_NONE) {
2557 err = -EINVAL;
2558 goto out;
2559 }
2560
2561 *data_norm = (unsigned int)new_data_norm;
2562 }
2563
2564 out:
2565 return err;
2566 }
2567
2568 /* execute with input_lock locked */
2569 static int vino_is_input_owner(struct vino_channel_settings *vcs)
2570 {
2571 switch(vcs->input) {
2572 case VINO_INPUT_COMPOSITE:
2573 case VINO_INPUT_SVIDEO:
2574 return (vino_drvdata->decoder.owner == vcs->channel);
2575 case VINO_INPUT_D1:
2576 return (vino_drvdata->camera.owner == vcs->channel);
2577 default:
2578 return 0;
2579 }
2580 }
2581
2582 static int vino_acquire_input(struct vino_channel_settings *vcs)
2583 {
2584 unsigned long flags;
2585 int ret = 0;
2586
2587 dprintk("vino_acquire_input():\n");
2588
2589 spin_lock_irqsave(&vino_drvdata->input_lock, flags);
2590
2591 /* First try D1 and then SAA7191 */
2592 if (vino_drvdata->camera.driver
2593 && (vino_drvdata->camera.owner == VINO_NO_CHANNEL)) {
2594 if (i2c_use_client(vino_drvdata->camera.driver)) {
2595 ret = -ENODEV;
2596 goto out;
2597 }
2598
2599 vino_drvdata->camera.owner = vcs->channel;
2600 vcs->input = VINO_INPUT_D1;
2601 vcs->data_norm = VINO_DATA_NORM_D1;
2602 } else if (vino_drvdata->decoder.driver
2603 && (vino_drvdata->decoder.owner == VINO_NO_CHANNEL)) {
2604 int input, data_norm;
2605 int saa7191_input;
2606
2607 if (i2c_use_client(vino_drvdata->decoder.driver)) {
2608 ret = -ENODEV;
2609 goto out;
2610 }
2611
2612 input = VINO_INPUT_COMPOSITE;
2613
2614 saa7191_input = vino_get_saa7191_input(input);
2615 ret = i2c_decoder_command(DECODER_SET_INPUT,
2616 &saa7191_input);
2617 if (ret) {
2618 ret = -EINVAL;
2619 goto out;
2620 }
2621
2622 spin_unlock_irqrestore(&vino_drvdata->input_lock, flags);
2623
2624 /* Don't hold spinlocks while auto-detecting norm
2625 * as it may take a while... */
2626
2627 data_norm = VINO_DATA_NORM_AUTO_EXT;
2628
2629 ret = vino_saa7191_set_norm(&data_norm);
2630 if ((ret == -EBUSY) || (ret == -EAGAIN)) {
2631 data_norm = VINO_DATA_NORM_PAL;
2632 ret = vino_saa7191_set_norm(&data_norm);
2633 }
2634
2635 spin_lock_irqsave(&vino_drvdata->input_lock, flags);
2636
2637 if (ret) {
2638 ret = -EINVAL;
2639 goto out;
2640 }
2641
2642 vino_drvdata->decoder.owner = vcs->channel;
2643
2644 vcs->input = input;
2645 vcs->data_norm = data_norm;
2646 } else {
2647 vcs->input = (vcs->channel == VINO_CHANNEL_A) ?
2648 vino_drvdata->b.input : vino_drvdata->a.input;
2649 vcs->data_norm = (vcs->channel == VINO_CHANNEL_A) ?
2650 vino_drvdata->b.data_norm : vino_drvdata->a.data_norm;
2651 }
2652
2653 if (vcs->input == VINO_INPUT_NONE) {
2654 ret = -ENODEV;
2655 goto out;
2656 }
2657
2658 vino_set_default_clipping(vcs);
2659 vino_set_default_scaling(vcs);
2660 vino_set_default_framerate(vcs);
2661
2662 dprintk("vino_acquire_input(): %s\n", vino_inputs[vcs->input].name);
2663
2664 out:
2665 spin_unlock_irqrestore(&vino_drvdata->input_lock, flags);
2666
2667 return ret;
2668 }
2669
2670 static int vino_set_input(struct vino_channel_settings *vcs, int input)
2671 {
2672 struct vino_channel_settings *vcs2 = (vcs->channel == VINO_CHANNEL_A) ?
2673 &vino_drvdata->b : &vino_drvdata->a;
2674 unsigned long flags;
2675 int ret = 0;
2676
2677 dprintk("vino_set_input():\n");
2678
2679 spin_lock_irqsave(&vino_drvdata->input_lock, flags);
2680
2681 if (vcs->input == input)
2682 goto out;
2683
2684 switch (input) {
2685 case VINO_INPUT_COMPOSITE:
2686 case VINO_INPUT_SVIDEO:
2687 if (!vino_drvdata->decoder.driver) {
2688 ret = -EINVAL;
2689 goto out;
2690 }
2691
2692 if (vino_drvdata->decoder.owner == VINO_NO_CHANNEL) {
2693 if (i2c_use_client(vino_drvdata->decoder.driver)) {
2694 ret = -ENODEV;
2695 goto out;
2696 }
2697 vino_drvdata->decoder.owner = vcs->channel;
2698 }
2699
2700 if (vino_drvdata->decoder.owner == vcs->channel) {
2701 int data_norm;
2702 int saa7191_input;
2703
2704 saa7191_input = vino_get_saa7191_input(input);
2705 ret = i2c_decoder_command(DECODER_SET_INPUT,
2706 &saa7191_input);
2707 if (ret) {
2708 vino_drvdata->decoder.owner = VINO_NO_CHANNEL;
2709 ret = -EINVAL;
2710 goto out;
2711 }
2712
2713 spin_unlock_irqrestore(&vino_drvdata->input_lock, flags);
2714
2715 /* Don't hold spinlocks while auto-detecting norm
2716 * as it may take a while... */
2717
2718 data_norm = VINO_DATA_NORM_AUTO_EXT;
2719
2720 ret = vino_saa7191_set_norm(&data_norm);
2721 if ((ret == -EBUSY) || (ret == -EAGAIN)) {
2722 data_norm = VINO_DATA_NORM_PAL;
2723 ret = vino_saa7191_set_norm(&data_norm);
2724 }
2725
2726 spin_lock_irqsave(&vino_drvdata->input_lock, flags);
2727
2728 if (ret) {
2729 vino_drvdata->decoder.owner = VINO_NO_CHANNEL;
2730 ret = -EINVAL;
2731 goto out;
2732 }
2733
2734 vcs->input = input;
2735 vcs->data_norm = data_norm;
2736 } else {
2737 if (input != vcs2->input) {
2738 ret = -EBUSY;
2739 goto out;
2740 }
2741
2742 vcs->input = input;
2743 vcs->data_norm = vcs2->data_norm;
2744 }
2745
2746 if (vino_drvdata->camera.owner == vcs->channel) {
2747 /* Transfer the ownership or release the input */
2748 if (vcs2->input == VINO_INPUT_D1) {
2749 vino_drvdata->camera.owner = vcs2->channel;
2750 } else {
2751 i2c_release_client(vino_drvdata->
2752 camera.driver);
2753 vino_drvdata->camera.owner = VINO_NO_CHANNEL;
2754 }
2755 }
2756 break;
2757 case VINO_INPUT_D1:
2758 if (!vino_drvdata->camera.driver) {
2759 ret = -EINVAL;
2760 goto out;
2761 }
2762
2763 if (vino_drvdata->camera.owner == VINO_NO_CHANNEL) {
2764 if (i2c_use_client(vino_drvdata->camera.driver)) {
2765 ret = -ENODEV;
2766 goto out;
2767 }
2768 vino_drvdata->camera.owner = vcs->channel;
2769 }
2770
2771 if (vino_drvdata->decoder.owner == vcs->channel) {
2772 /* Transfer the ownership or release the input */
2773 if ((vcs2->input == VINO_INPUT_COMPOSITE) ||
2774 (vcs2->input == VINO_INPUT_SVIDEO)) {
2775 vino_drvdata->decoder.owner = vcs2->channel;
2776 } else {
2777 i2c_release_client(vino_drvdata->
2778 decoder.driver);
2779 vino_drvdata->decoder.owner = VINO_NO_CHANNEL;
2780 }
2781 }
2782
2783 vcs->input = input;
2784 vcs->data_norm = VINO_DATA_NORM_D1;
2785 break;
2786 default:
2787 ret = -EINVAL;
2788 goto out;
2789 }
2790
2791 vino_set_default_clipping(vcs);
2792 vino_set_default_scaling(vcs);
2793 vino_set_default_framerate(vcs);
2794
2795 dprintk("vino_set_input(): %s\n", vino_inputs[vcs->input].name);
2796
2797 out:
2798 spin_unlock_irqrestore(&vino_drvdata->input_lock, flags);
2799
2800 return ret;
2801 }
2802
2803 static void vino_release_input(struct vino_channel_settings *vcs)
2804 {
2805 struct vino_channel_settings *vcs2 = (vcs->channel == VINO_CHANNEL_A) ?
2806 &vino_drvdata->b : &vino_drvdata->a;
2807 unsigned long flags;
2808
2809 dprintk("vino_release_input():\n");
2810
2811 spin_lock_irqsave(&vino_drvdata->input_lock, flags);
2812
2813 /* Release ownership of the channel
2814 * and if the other channel takes input from
2815 * the same source, transfer the ownership */
2816 if (vino_drvdata->camera.owner == vcs->channel) {
2817 if (vcs2->input == VINO_INPUT_D1) {
2818 vino_drvdata->camera.owner = vcs2->channel;
2819 } else {
2820 i2c_release_client(vino_drvdata->camera.driver);
2821 vino_drvdata->camera.owner = VINO_NO_CHANNEL;
2822 }
2823 } else if (vino_drvdata->decoder.owner == vcs->channel) {
2824 if ((vcs2->input == VINO_INPUT_COMPOSITE) ||
2825 (vcs2->input == VINO_INPUT_SVIDEO)) {
2826 vino_drvdata->decoder.owner = vcs2->channel;
2827 } else {
2828 i2c_release_client(vino_drvdata->decoder.driver);
2829 vino_drvdata->decoder.owner = VINO_NO_CHANNEL;
2830 }
2831 }
2832 vcs->input = VINO_INPUT_NONE;
2833
2834 spin_unlock_irqrestore(&vino_drvdata->input_lock, flags);
2835 }
2836
2837 /* execute with input_lock locked */
2838 static int vino_set_data_norm(struct vino_channel_settings *vcs,
2839 unsigned int data_norm,
2840 unsigned long *flags)
2841 {
2842 int err = 0;
2843
2844 if (data_norm == vcs->data_norm)
2845 return 0;
2846
2847 switch (vcs->input) {
2848 case VINO_INPUT_D1:
2849 /* only one "norm" supported */
2850 if ((data_norm != VINO_DATA_NORM_D1)
2851 && (data_norm != VINO_DATA_NORM_AUTO)
2852 && (data_norm != VINO_DATA_NORM_AUTO_EXT))
2853 return -EINVAL;
2854 break;
2855 case VINO_INPUT_COMPOSITE:
2856 case VINO_INPUT_SVIDEO: {
2857 if ((data_norm != VINO_DATA_NORM_PAL)
2858 && (data_norm != VINO_DATA_NORM_NTSC)
2859 && (data_norm != VINO_DATA_NORM_SECAM)
2860 && (data_norm != VINO_DATA_NORM_AUTO)
2861 && (data_norm != VINO_DATA_NORM_AUTO_EXT))
2862 return -EINVAL;
2863
2864 spin_unlock_irqrestore(&vino_drvdata->input_lock, *flags);
2865
2866 /* Don't hold spinlocks while setting norm
2867 * as it may take a while... */
2868
2869 err = vino_saa7191_set_norm(&data_norm);
2870
2871 spin_lock_irqsave(&vino_drvdata->input_lock, *flags);
2872
2873 if (err)
2874 goto out;
2875
2876 vcs->data_norm = data_norm;
2877
2878 vino_set_default_clipping(vcs);
2879 vino_set_default_scaling(vcs);
2880 vino_set_default_framerate(vcs);
2881 break;
2882 }
2883 default:
2884 return -EINVAL;
2885 }
2886
2887 out:
2888 return err;
2889 }
2890
2891 /* V4L2 helper functions */
2892
2893 static int vino_find_data_format(__u32 pixelformat)
2894 {
2895 int i;
2896
2897 for (i = 0; i < VINO_DATA_FMT_COUNT; i++) {
2898 if (vino_data_formats[i].pixelformat == pixelformat)
2899 return i;
2900 }
2901
2902 return VINO_DATA_FMT_NONE;
2903 }
2904
2905 static int vino_enum_data_norm(struct vino_channel_settings *vcs, __u32 index)
2906 {
2907 int data_norm = VINO_DATA_NORM_NONE;
2908 unsigned long flags;
2909
2910 spin_lock_irqsave(&vino_drvdata->input_lock, flags);
2911 switch(vcs->input) {
2912 case VINO_INPUT_COMPOSITE:
2913 case VINO_INPUT_SVIDEO:
2914 if (index == 0) {
2915 data_norm = VINO_DATA_NORM_PAL;
2916 } else if (index == 1) {
2917 data_norm = VINO_DATA_NORM_NTSC;
2918 } else if (index == 2) {
2919 data_norm = VINO_DATA_NORM_SECAM;
2920 }
2921 break;
2922 case VINO_INPUT_D1:
2923 if (index == 0) {
2924 data_norm = VINO_DATA_NORM_D1;
2925 }
2926 break;
2927 }
2928 spin_unlock_irqrestore(&vino_drvdata->input_lock, flags);
2929
2930 return data_norm;
2931 }
2932
2933 static int vino_enum_input(struct vino_channel_settings *vcs, __u32 index)
2934 {
2935 int input = VINO_INPUT_NONE;
2936 unsigned long flags;
2937
2938 spin_lock_irqsave(&vino_drvdata->input_lock, flags);
2939 if (vino_drvdata->decoder.driver && vino_drvdata->camera.driver) {
2940 switch (index) {
2941 case 0:
2942 input = VINO_INPUT_COMPOSITE;
2943 break;
2944 case 1:
2945 input = VINO_INPUT_SVIDEO;
2946 break;
2947 case 2:
2948 input = VINO_INPUT_D1;
2949 break;
2950 }
2951 } else if (vino_drvdata->decoder.driver) {
2952 switch (index) {
2953 case 0:
2954 input = VINO_INPUT_COMPOSITE;
2955 break;
2956 case 1:
2957 input = VINO_INPUT_SVIDEO;
2958 break;
2959 }
2960 } else if (vino_drvdata->camera.driver) {
2961 switch (index) {
2962 case 0:
2963 input = VINO_INPUT_D1;
2964 break;
2965 }
2966 }
2967 spin_unlock_irqrestore(&vino_drvdata->input_lock, flags);
2968
2969 return input;
2970 }
2971
2972 /* execute with input_lock locked */
2973 static __u32 vino_find_input_index(struct vino_channel_settings *vcs)
2974 {
2975 __u32 index = 0;
2976 // FIXME: detect when no inputs available
2977
2978 if (vino_drvdata->decoder.driver && vino_drvdata->camera.driver) {
2979 switch (vcs->input) {
2980 case VINO_INPUT_COMPOSITE:
2981 index = 0;
2982 break;
2983 case VINO_INPUT_SVIDEO:
2984 index = 1;
2985 break;
2986 case VINO_INPUT_D1:
2987 index = 2;
2988 break;
2989 }
2990 } else if (vino_drvdata->decoder.driver) {
2991 switch (vcs->input) {
2992 case VINO_INPUT_COMPOSITE:
2993 index = 0;
2994 break;
2995 case VINO_INPUT_SVIDEO:
2996 index = 1;
2997 break;
2998 }
2999 } else if (vino_drvdata->camera.driver) {
3000 switch (vcs->input) {
3001 case VINO_INPUT_D1:
3002 index = 0;
3003 break;
3004 }
3005 }
3006
3007 return index;
3008 }
3009
3010 /* V4L2 ioctls */
3011
3012 static void vino_v4l2_querycap(struct v4l2_capability *cap)
3013 {
3014 memset(cap, 0, sizeof(struct v4l2_capability));
3015
3016 strcpy(cap->driver, vino_driver_name);
3017 strcpy(cap->card, vino_driver_description);
3018 strcpy(cap->bus_info, vino_bus_name);
3019 cap->version = VINO_VERSION_CODE;
3020 cap->capabilities =
3021 V4L2_CAP_VIDEO_CAPTURE |
3022 V4L2_CAP_STREAMING;
3023 // V4L2_CAP_OVERLAY, V4L2_CAP_READWRITE
3024 }
3025
3026 static int vino_v4l2_enuminput(struct vino_channel_settings *vcs,
3027 struct v4l2_input *i)
3028 {
3029 __u32 index = i->index;
3030 int input;
3031 dprintk("requested index = %d\n", index);
3032
3033 input = vino_enum_input(vcs, index);
3034 if (input == VINO_INPUT_NONE)
3035 return -EINVAL;
3036
3037 memset(i, 0, sizeof(struct v4l2_input));
3038
3039 i->index = index;
3040 i->type = V4L2_INPUT_TYPE_CAMERA;
3041 i->std = vino_inputs[input].std;
3042 strcpy(i->name, vino_inputs[input].name);
3043
3044 if ((input == VINO_INPUT_COMPOSITE)
3045 || (input == VINO_INPUT_SVIDEO)) {
3046 struct saa7191_status status;
3047 i2c_decoder_command(DECODER_SAA7191_GET_STATUS, &status);
3048 i->status |= status.signal ? 0 : V4L2_IN_ST_NO_SIGNAL;
3049 i->status |= status.color ? 0 : V4L2_IN_ST_NO_COLOR;
3050 }
3051
3052 return 0;
3053 }
3054
3055 static int vino_v4l2_g_input(struct vino_channel_settings *vcs,
3056 unsigned int *i)
3057 {
3058 __u32 index;
3059 int input;
3060 unsigned long flags;
3061
3062 spin_lock_irqsave(&vino_drvdata->input_lock, flags);
3063 input = vcs->input;
3064 index = vino_find_input_index(vcs);
3065 spin_unlock_irqrestore(&vino_drvdata->input_lock, flags);
3066
3067 dprintk("input = %d\n", input);
3068
3069 if (input == VINO_INPUT_NONE) {
3070 return -EINVAL;
3071 }
3072
3073 *i = index;
3074
3075 return 0;
3076 }
3077
3078 static int vino_v4l2_s_input(struct vino_channel_settings *vcs,
3079 unsigned int *i)
3080 {
3081 int input;
3082 dprintk("requested input = %d\n", *i);
3083
3084 input = vino_enum_input(vcs, *i);
3085 if (input == VINO_INPUT_NONE)
3086 return -EINVAL;
3087
3088 return vino_set_input(vcs, input);
3089 }
3090
3091 static int vino_v4l2_enumstd(struct vino_channel_settings *vcs,
3092 struct v4l2_standard *s)
3093 {
3094 int index = s->index;
3095 int data_norm;
3096
3097 data_norm = vino_enum_data_norm(vcs, index);
3098 dprintk("standard index = %d\n", index);
3099
3100 if (data_norm == VINO_DATA_NORM_NONE)
3101 return -EINVAL;
3102
3103 dprintk("standard name = %s\n",
3104 vino_data_norms[data_norm].description);
3105
3106 memset(s, 0, sizeof(struct v4l2_standard));
3107 s->index = index;
3108
3109 s->id = vino_data_norms[data_norm].std;
3110 s->frameperiod.numerator = 1;
3111 s->frameperiod.denominator =
3112 vino_data_norms[data_norm].fps_max;
3113 s->framelines =
3114 vino_data_norms[data_norm].framelines;
3115 strcpy(s->name,
3116 vino_data_norms[data_norm].description);
3117
3118 return 0;
3119 }
3120
3121 static int vino_v4l2_querystd(struct vino_channel_settings *vcs,
3122 v4l2_std_id *std)
3123 {
3124 unsigned long flags;
3125 int err = 0;
3126
3127 spin_lock_irqsave(&vino_drvdata->input_lock, flags);
3128
3129 switch (vcs->input) {
3130 case VINO_INPUT_D1:
3131 *std = vino_inputs[vcs->input].std;
3132 break;
3133 case VINO_INPUT_COMPOSITE:
3134 case VINO_INPUT_SVIDEO: {
3135 struct saa7191_status status;
3136
3137 i2c_decoder_command(DECODER_SAA7191_GET_STATUS, &status);
3138
3139 if (status.signal) {
3140 if (status.signal_60hz) {
3141 *std = V4L2_STD_NTSC;
3142 } else {
3143 *std = V4L2_STD_PAL | V4L2_STD_SECAM;
3144 }
3145 } else {
3146 *std = vino_inputs[vcs->input].std;
3147 }
3148 break;
3149 }
3150 default:
3151 err = -EINVAL;
3152 }
3153
3154 spin_unlock_irqrestore(&vino_drvdata->input_lock, flags);
3155
3156 return err;
3157 }
3158
3159 static int vino_v4l2_g_std(struct vino_channel_settings *vcs,
3160 v4l2_std_id *std)
3161 {
3162 unsigned long flags;
3163
3164 spin_lock_irqsave(&vino_drvdata->input_lock, flags);
3165
3166 *std = vino_data_norms[vcs->data_norm].std;
3167 dprintk("current standard = %d\n", vcs->data_norm);
3168
3169 spin_unlock_irqrestore(&vino_drvdata->input_lock, flags);
3170
3171 return 0;
3172 }
3173
3174 static int vino_v4l2_s_std(struct vino_channel_settings *vcs,
3175 v4l2_std_id *std)
3176 {
3177 unsigned long flags;
3178 int ret = 0;
3179
3180 spin_lock_irqsave(&vino_drvdata->input_lock, flags);
3181
3182 if (!vino_is_input_owner(vcs)) {
3183 ret = -EBUSY;
3184 goto out;
3185 }
3186
3187 /* check if the standard is valid for the current input */
3188 if ((*std) & vino_inputs[vcs->input].std) {
3189 dprintk("standard accepted\n");
3190
3191 /* change the video norm for SAA7191
3192 * and accept NTSC for D1 (do nothing) */
3193
3194 if (vcs->input == VINO_INPUT_D1)
3195 goto out;
3196
3197 if (((*std) & V4L2_STD_PAL)
3198 && ((*std) & V4L2_STD_NTSC)
3199 && ((*std) & V4L2_STD_SECAM)) {
3200 ret = vino_set_data_norm(vcs, VINO_DATA_NORM_AUTO_EXT,
3201 &flags);
3202 } else if ((*std) & V4L2_STD_PAL) {
3203 ret = vino_set_data_norm(vcs, VINO_DATA_NORM_PAL,
3204 &flags);
3205 } else if ((*std) & V4L2_STD_NTSC) {
3206 ret = vino_set_data_norm(vcs, VINO_DATA_NORM_NTSC,
3207 &flags);
3208 } else if ((*std) & V4L2_STD_SECAM) {
3209 ret = vino_set_data_norm(vcs, VINO_DATA_NORM_SECAM,
3210 &flags);
3211 } else {
3212 ret = -EINVAL;
3213 }
3214
3215 if (ret) {
3216 ret = -EINVAL;
3217 }
3218 } else {
3219 ret = -EINVAL;
3220 }
3221
3222 out:
3223 spin_unlock_irqrestore(&vino_drvdata->input_lock, flags);
3224
3225 return ret;
3226 }
3227
3228 static int vino_v4l2_enum_fmt(struct vino_channel_settings *vcs,
3229 struct v4l2_fmtdesc *fd)
3230 {
3231 enum v4l2_buf_type type = fd->type;
3232 int index = fd->index;
3233 dprintk("format index = %d\n", index);
3234
3235 switch (fd->type) {
3236 case V4L2_BUF_TYPE_VIDEO_CAPTURE:
3237 if ((fd->index < 0) ||
3238 (fd->index >= VINO_DATA_FMT_COUNT))
3239 return -EINVAL;
3240 dprintk("format name = %s\n",
3241 vino_data_formats[index].description);
3242
3243 memset(fd, 0, sizeof(struct v4l2_fmtdesc));
3244 fd->index = index;
3245 fd->type = type;
3246 fd->pixelformat = vino_data_formats[index].pixelformat;
3247 strcpy(fd->description, vino_data_formats[index].description);
3248 break;
3249 case V4L2_BUF_TYPE_VIDEO_OVERLAY:
3250 default:
3251 return -EINVAL;
3252 }
3253
3254 return 0;
3255 }
3256
3257 static int vino_v4l2_try_fmt(struct vino_channel_settings *vcs,
3258 struct v4l2_format *f)
3259 {
3260 struct vino_channel_settings tempvcs;
3261 unsigned long flags;
3262
3263 switch (f->type) {
3264 case V4L2_BUF_TYPE_VIDEO_CAPTURE: {
3265 struct v4l2_pix_format *pf = &f->fmt.pix;
3266
3267 dprintk("requested: w = %d, h = %d\n",
3268 pf->width, pf->height);
3269
3270 spin_lock_irqsave(&vino_drvdata->input_lock, flags);
3271 memcpy(&tempvcs, vcs, sizeof(struct vino_channel_settings));
3272 spin_unlock_irqrestore(&vino_drvdata->input_lock, flags);
3273
3274 tempvcs.data_format = vino_find_data_format(pf->pixelformat);
3275 if (tempvcs.data_format == VINO_DATA_FMT_NONE) {
3276 tempvcs.data_format = VINO_DATA_FMT_GREY;
3277 pf->pixelformat =
3278 vino_data_formats[tempvcs.data_format].
3279 pixelformat;
3280 }
3281
3282 /* data format must be set before clipping/scaling */
3283 vino_set_scaling(&tempvcs, pf->width, pf->height);
3284
3285 dprintk("data format = %s\n",
3286 vino_data_formats[tempvcs.data_format].description);
3287
3288 pf->width = (tempvcs.clipping.right - tempvcs.clipping.left) /
3289 tempvcs.decimation;
3290 pf->height = (tempvcs.clipping.bottom - tempvcs.clipping.top) /
3291 tempvcs.decimation;
3292
3293 pf->field = V4L2_FIELD_INTERLACED;
3294 pf->bytesperline = tempvcs.line_size;
3295 pf->sizeimage = tempvcs.line_size *
3296 (tempvcs.clipping.bottom - tempvcs.clipping.top) /
3297 tempvcs.decimation;
3298 pf->colorspace =
3299 vino_data_formats[tempvcs.data_format].colorspace;
3300
3301 pf->priv = 0;
3302 break;
3303 }
3304 case V4L2_BUF_TYPE_VIDEO_OVERLAY:
3305 default:
3306 return -EINVAL;
3307 }
3308
3309 return 0;
3310 }
3311
3312 static int vino_v4l2_g_fmt(struct vino_channel_settings *vcs,
3313 struct v4l2_format *f)
3314 {
3315 unsigned long flags;
3316
3317 switch (f->type) {
3318 case V4L2_BUF_TYPE_VIDEO_CAPTURE: {
3319 struct v4l2_pix_format *pf = &f->fmt.pix;
3320
3321 spin_lock_irqsave(&vino_drvdata->input_lock, flags);
3322
3323 pf->width = (vcs->clipping.right - vcs->clipping.left) /
3324 vcs->decimation;
3325 pf->height = (vcs->clipping.bottom - vcs->clipping.top) /
3326 vcs->decimation;
3327 pf->pixelformat =
3328 vino_data_formats[vcs->data_format].pixelformat;
3329
3330 pf->field = V4L2_FIELD_INTERLACED;
3331 pf->bytesperline = vcs->line_size;
3332 pf->sizeimage = vcs->line_size *
3333 (vcs->clipping.bottom - vcs->clipping.top) /
3334 vcs->decimation;
3335 pf->colorspace =
3336 vino_data_formats[vcs->data_format].colorspace;
3337
3338 pf->priv = 0;
3339
3340 spin_unlock_irqrestore(&vino_drvdata->input_lock, flags);
3341 break;
3342 }
3343 case V4L2_BUF_TYPE_VIDEO_OVERLAY:
3344 default:
3345 return -EINVAL;
3346 }
3347
3348 return 0;
3349 }
3350
3351 static int vino_v4l2_s_fmt(struct vino_channel_settings *vcs,
3352 struct v4l2_format *f)
3353 {
3354 int data_format;
3355 unsigned long flags;
3356
3357 switch (f->type) {
3358 case V4L2_BUF_TYPE_VIDEO_CAPTURE: {
3359 struct v4l2_pix_format *pf = &f->fmt.pix;
3360
3361 spin_lock_irqsave(&vino_drvdata->input_lock, flags);
3362
3363 data_format = vino_find_data_format(pf->pixelformat);
3364
3365 if (data_format == VINO_DATA_FMT_NONE) {
3366 vcs->data_format = VINO_DATA_FMT_GREY;
3367 pf->pixelformat =
3368 vino_data_formats[vcs->data_format].
3369 pixelformat;
3370 } else {
3371 vcs->data_format = data_format;
3372 }
3373
3374 /* data format must be set before clipping/scaling */
3375 vino_set_scaling(vcs, pf->width, pf->height);
3376
3377 dprintk("data format = %s\n",
3378 vino_data_formats[vcs->data_format].description);
3379
3380 pf->width = vcs->clipping.right - vcs->clipping.left;
3381 pf->height = vcs->clipping.bottom - vcs->clipping.top;
3382
3383 pf->field = V4L2_FIELD_INTERLACED;
3384 pf->bytesperline = vcs->line_size;
3385 pf->sizeimage = vcs->line_size *
3386 (vcs->clipping.bottom - vcs->clipping.top) /
3387 vcs->decimation;
3388 pf->colorspace =
3389 vino_data_formats[vcs->data_format].colorspace;
3390
3391 pf->priv = 0;
3392
3393 spin_unlock_irqrestore(&vino_drvdata->input_lock, flags);
3394 break;
3395 }
3396 case V4L2_BUF_TYPE_VIDEO_OVERLAY:
3397 default:
3398 return -EINVAL;
3399 }
3400
3401 return 0;
3402 }
3403
3404 static int vino_v4l2_cropcap(struct vino_channel_settings *vcs,
3405 struct v4l2_cropcap *ccap)
3406 {
3407 const struct vino_data_norm *norm;
3408 unsigned long flags;
3409
3410 switch (ccap->type) {
3411 case V4L2_BUF_TYPE_VIDEO_CAPTURE:
3412 spin_lock_irqsave(&vino_drvdata->input_lock, flags);
3413
3414 norm = &vino_data_norms[vcs->data_norm];
3415
3416 spin_unlock_irqrestore(&vino_drvdata->input_lock, flags);
3417
3418 ccap->bounds.left = 0;
3419 ccap->bounds.top = 0;
3420 ccap->bounds.width = norm->width;
3421 ccap->bounds.height = norm->height;
3422 memcpy(&ccap->defrect, &ccap->bounds,
3423 sizeof(struct v4l2_rect));
3424
3425 ccap->pixelaspect.numerator = 1;
3426 ccap->pixelaspect.denominator = 1;
3427 break;
3428 case V4L2_BUF_TYPE_VIDEO_OVERLAY:
3429 default:
3430 return -EINVAL;
3431 }
3432
3433 return 0;
3434 }
3435
3436 static int vino_v4l2_g_crop(struct vino_channel_settings *vcs,
3437 struct v4l2_crop *c)
3438 {
3439 unsigned long flags;
3440
3441 switch (c->type) {
3442 case V4L2_BUF_TYPE_VIDEO_CAPTURE:
3443 spin_lock_irqsave(&vino_drvdata->input_lock, flags);
3444
3445 c->c.left = vcs->clipping.left;
3446 c->c.top = vcs->clipping.top;
3447 c->c.width = vcs->clipping.right - vcs->clipping.left;
3448 c->c.height = vcs->clipping.bottom - vcs->clipping.top;
3449
3450 spin_unlock_irqrestore(&vino_drvdata->input_lock, flags);
3451 break;
3452 case V4L2_BUF_TYPE_VIDEO_OVERLAY:
3453 default:
3454 return -EINVAL;
3455 }
3456
3457 return 0;
3458 }
3459
3460 static int vino_v4l2_s_crop(struct vino_channel_settings *vcs,
3461 struct v4l2_crop *c)
3462 {
3463 unsigned long flags;
3464
3465 switch (c->type) {
3466 case V4L2_BUF_TYPE_VIDEO_CAPTURE:
3467 spin_lock_irqsave(&vino_drvdata->input_lock, flags);
3468
3469 vino_set_clipping(vcs, c->c.left, c->c.top,
3470 c->c.width, c->c.height);
3471
3472 spin_unlock_irqrestore(&vino_drvdata->input_lock, flags);
3473 break;
3474 case V4L2_BUF_TYPE_VIDEO_OVERLAY:
3475 default:
3476 return -EINVAL;
3477 }
3478
3479 return 0;
3480 }
3481
3482 static int vino_v4l2_g_parm(struct vino_channel_settings *vcs,
3483 struct v4l2_streamparm *sp)
3484 {
3485 unsigned long flags;
3486
3487 switch (sp->type) {
3488 case V4L2_BUF_TYPE_VIDEO_CAPTURE: {
3489 struct v4l2_captureparm *cp = &sp->parm.capture;
3490 memset(cp, 0, sizeof(struct v4l2_captureparm));
3491
3492 cp->capability = V4L2_CAP_TIMEPERFRAME;
3493 cp->timeperframe.numerator = 1;
3494
3495 spin_lock_irqsave(&vino_drvdata->input_lock, flags);
3496
3497 cp->timeperframe.denominator = vcs->fps;
3498
3499 spin_unlock_irqrestore(&vino_drvdata->input_lock, flags);
3500
3501 // TODO: cp->readbuffers = xxx;
3502 break;
3503 }
3504 case V4L2_BUF_TYPE_VIDEO_OVERLAY:
3505 default:
3506 return -EINVAL;
3507 }
3508
3509 return 0;
3510 }
3511
3512 static int vino_v4l2_s_parm(struct vino_channel_settings *vcs,
3513 struct v4l2_streamparm *sp)
3514 {
3515 unsigned long flags;
3516
3517 switch (sp->type) {
3518 case V4L2_BUF_TYPE_VIDEO_CAPTURE: {
3519 struct v4l2_captureparm *cp = &sp->parm.capture;
3520
3521 spin_lock_irqsave(&vino_drvdata->input_lock, flags);
3522
3523 if ((cp->timeperframe.numerator == 0) ||
3524 (cp->timeperframe.denominator == 0)) {
3525 /* reset framerate */
3526 vino_set_default_framerate(vcs);
3527 } else {
3528 vino_set_framerate(vcs, cp->timeperframe.denominator /
3529 cp->timeperframe.numerator);
3530 }
3531
3532 spin_unlock_irqrestore(&vino_drvdata->input_lock, flags);
3533
3534 // TODO: set buffers according to cp->readbuffers
3535 break;
3536 }
3537 case V4L2_BUF_TYPE_VIDEO_OVERLAY:
3538 default:
3539 return -EINVAL;
3540 }
3541
3542 return 0;
3543 }
3544
3545 static int vino_v4l2_reqbufs(struct vino_channel_settings *vcs,
3546 struct v4l2_requestbuffers *rb)
3547 {
3548 if (vcs->reading)
3549 return -EBUSY;
3550
3551 switch (rb->type) {
3552 case V4L2_BUF_TYPE_VIDEO_CAPTURE: {
3553 // TODO: check queue type
3554 if (rb->memory != V4L2_MEMORY_MMAP) {
3555 dprintk("type not mmap\n");
3556 return -EINVAL;
3557 }
3558
3559 dprintk("count = %d\n", rb->count);
3560 if (rb->count > 0) {
3561 if (vino_is_capturing(vcs)) {
3562 dprintk("busy, capturing\n");
3563 return -EBUSY;
3564 }
3565
3566 if (vino_queue_has_mapped_buffers(&vcs->fb_queue)) {
3567 dprintk("busy, buffers still mapped\n");
3568 return -EBUSY;
3569 } else {
3570 vcs->streaming = 0;
3571 vino_queue_free(&vcs->fb_queue);
3572 vino_queue_init(&vcs->fb_queue, &rb->count);
3573 }
3574 } else {
3575 vcs->streaming = 0;
3576 vino_capture_stop(vcs);
3577 vino_queue_free(&vcs->fb_queue);
3578 }
3579 break;
3580 }
3581 case V4L2_BUF_TYPE_VIDEO_OVERLAY:
3582 default:
3583 return -EINVAL;
3584 }
3585
3586 return 0;
3587 }
3588
3589 static void vino_v4l2_get_buffer_status(struct vino_channel_settings *vcs,
3590 struct vino_framebuffer *fb,
3591 struct v4l2_buffer *b)
3592 {
3593 if (vino_queue_outgoing_contains(&vcs->fb_queue,
3594 fb->id)) {
3595 b->flags &= ~V4L2_BUF_FLAG_QUEUED;
3596 b->flags |= V4L2_BUF_FLAG_DONE;
3597 } else if (vino_queue_incoming_contains(&vcs->fb_queue,
3598 fb->id)) {
3599 b->flags &= ~V4L2_BUF_FLAG_DONE;
3600 b->flags |= V4L2_BUF_FLAG_QUEUED;
3601 } else {
3602 b->flags &= ~(V4L2_BUF_FLAG_DONE |
3603 V4L2_BUF_FLAG_QUEUED);
3604 }
3605
3606 b->flags &= ~(V4L2_BUF_FLAG_TIMECODE);
3607
3608 if (fb->map_count > 0)
3609 b->flags |= V4L2_BUF_FLAG_MAPPED;
3610
3611 b->index = fb->id;
3612 b->memory = (vcs->fb_queue.type == VINO_MEMORY_MMAP) ?
3613 V4L2_MEMORY_MMAP : V4L2_MEMORY_USERPTR;
3614 b->m.offset = fb->offset;
3615 b->bytesused = fb->data_size;
3616 b->length = fb->size;
3617 b->field = V4L2_FIELD_INTERLACED;
3618 b->sequence = fb->frame_counter;
3619 memcpy(&b->timestamp, &fb->timestamp,
3620 sizeof(struct timeval));
3621 // b->input ?
3622
3623 dprintk("buffer %d: length = %d, bytesused = %d, offset = %d\n",
3624 fb->id, fb->size, fb->data_size, fb->offset);
3625 }
3626
3627 static int vino_v4l2_querybuf(struct vino_channel_settings *vcs,
3628 struct v4l2_buffer *b)
3629 {
3630 if (vcs->reading)
3631 return -EBUSY;
3632
3633 switch (b->type) {
3634 case V4L2_BUF_TYPE_VIDEO_CAPTURE: {
3635 struct vino_framebuffer *fb;
3636
3637 // TODO: check queue type
3638 if (b->index >= vino_queue_get_length(&vcs->fb_queue)) {
3639 dprintk("invalid index = %d\n",
3640 b->index);
3641 return -EINVAL;
3642 }
3643
3644 fb = vino_queue_get_buffer(&vcs->fb_queue,
3645 b->index);
3646 if (fb == NULL) {
3647 dprintk("vino_queue_get_buffer() failed");
3648 return -EINVAL;
3649 }
3650
3651 vino_v4l2_get_buffer_status(vcs, fb, b);
3652 break;
3653 }
3654 case V4L2_BUF_TYPE_VIDEO_OVERLAY:
3655 default:
3656 return -EINVAL;
3657 }
3658
3659 return 0;
3660 }
3661
3662 static int vino_v4l2_qbuf(struct vino_channel_settings *vcs,
3663 struct v4l2_buffer *b)
3664 {
3665 if (vcs->reading)
3666 return -EBUSY;
3667
3668 switch (b->type) {
3669 case V4L2_BUF_TYPE_VIDEO_CAPTURE: {
3670 struct vino_framebuffer *fb;
3671 int ret;
3672
3673 // TODO: check queue type
3674 if (b->memory != V4L2_MEMORY_MMAP) {
3675 dprintk("type not mmap\n");
3676 return -EINVAL;
3677 }
3678
3679 fb = vino_capture_enqueue(vcs, b->index);
3680 if (fb == NULL)
3681 return -EINVAL;
3682
3683 vino_v4l2_get_buffer_status(vcs, fb, b);
3684
3685 if (vcs->streaming) {
3686 ret = vino_capture_next(vcs, 1);
3687 if (ret)
3688 return ret;
3689 }
3690 break;
3691 }
3692 case V4L2_BUF_TYPE_VIDEO_OVERLAY:
3693 default:
3694 return -EINVAL;
3695 }
3696
3697 return 0;
3698 }
3699
3700 static int vino_v4l2_dqbuf(struct vino_channel_settings *vcs,
3701 struct v4l2_buffer *b,
3702 unsigned int nonblocking)
3703 {
3704 if (vcs->reading)
3705 return -EBUSY;
3706
3707 switch (b->type) {
3708 case V4L2_BUF_TYPE_VIDEO_CAPTURE: {
3709 struct vino_framebuffer *fb;
3710 unsigned int incoming, outgoing;
3711 int err;
3712
3713 // TODO: check queue type
3714
3715 err = vino_queue_get_incoming(&vcs->fb_queue, &incoming);
3716 if (err) {
3717 dprintk("vino_queue_get_incoming() failed\n");
3718 return -EINVAL;
3719 }
3720 err = vino_queue_get_outgoing(&vcs->fb_queue, &outgoing);
3721 if (err) {
3722 dprintk("vino_queue_get_outgoing() failed\n");
3723 return -EINVAL;
3724 }
3725
3726 dprintk("incoming = %d, outgoing = %d\n", incoming, outgoing);
3727
3728 if (outgoing == 0) {
3729 if (incoming == 0) {
3730 dprintk("no incoming or outgoing buffers\n");
3731 return -EINVAL;
3732 }
3733 if (nonblocking) {
3734 dprintk("non-blocking I/O was selected and "
3735 "there are no buffers to dequeue\n");
3736 return -EAGAIN;
3737 }
3738
3739 err = vino_wait_for_frame(vcs);
3740 if (err) {
3741 err = vino_wait_for_frame(vcs);
3742 if (err) {
3743 /* interrupted or
3744 * no frames captured because
3745 * of frame skipping */
3746 // vino_capture_failed(vcs);
3747 return -EIO;
3748 }
3749 }
3750 }
3751
3752 fb = vino_queue_remove(&vcs->fb_queue, &b->index);
3753 if (fb == NULL) {
3754 dprintk("vino_queue_remove() failed\n");
3755 return -EINVAL;
3756 }
3757
3758 err = vino_check_buffer(vcs, fb);
3759
3760 vino_v4l2_get_buffer_status(vcs, fb, b);
3761
3762 if (err)
3763 return -EIO;
3764
3765 break;
3766 }
3767 case V4L2_BUF_TYPE_VIDEO_OVERLAY:
3768 default:
3769 return -EINVAL;
3770 }
3771
3772 return 0;
3773 }
3774
3775 static int vino_v4l2_streamon(struct vino_channel_settings *vcs)
3776 {
3777 unsigned int incoming;
3778 int ret;
3779 if (vcs->reading)
3780 return -EBUSY;
3781
3782 if (vcs->streaming)
3783 return 0;
3784
3785 // TODO: check queue type
3786
3787 if (vino_queue_get_length(&vcs->fb_queue) < 1) {
3788 dprintk("no buffers allocated\n");
3789 return -EINVAL;
3790 }
3791
3792 ret = vino_queue_get_incoming(&vcs->fb_queue, &incoming);
3793 if (ret) {
3794 dprintk("vino_queue_get_incoming() failed\n");
3795 return -EINVAL;
3796 }
3797
3798 vcs->streaming = 1;
3799
3800 if (incoming > 0) {
3801 ret = vino_capture_next(vcs, 1);
3802 if (ret) {
3803 vcs->streaming = 0;
3804
3805 dprintk("couldn't start capture\n");
3806 return -EINVAL;
3807 }
3808 }
3809
3810 return 0;
3811 }
3812
3813 static int vino_v4l2_streamoff(struct vino_channel_settings *vcs)
3814 {
3815 if (vcs->reading)
3816 return -EBUSY;
3817
3818 if (!vcs->streaming)
3819 return 0;
3820
3821 vcs->streaming = 0;
3822 vino_capture_stop(vcs);
3823
3824 return 0;
3825 }
3826
3827 static int vino_v4l2_queryctrl(struct vino_channel_settings *vcs,
3828 struct v4l2_queryctrl *queryctrl)
3829 {
3830 unsigned long flags;
3831 int i;
3832 int err = 0;
3833
3834 spin_lock_irqsave(&vino_drvdata->input_lock, flags);
3835
3836 switch (vcs->input) {
3837 case VINO_INPUT_D1:
3838 for (i = 0; i < VINO_INDYCAM_V4L2_CONTROL_COUNT; i++) {
3839 if (vino_indycam_v4l2_controls[i].id ==
3840 queryctrl->id) {
3841 memcpy(queryctrl,
3842 &vino_indycam_v4l2_controls[i],
3843 sizeof(struct v4l2_queryctrl));
3844 queryctrl->reserved[0] = 0;
3845 goto found;
3846 }
3847 }
3848
3849 err = -EINVAL;
3850 break;
3851 case VINO_INPUT_COMPOSITE:
3852 case VINO_INPUT_SVIDEO:
3853 for (i = 0; i < VINO_SAA7191_V4L2_CONTROL_COUNT; i++) {
3854 if (vino_saa7191_v4l2_controls[i].id ==
3855 queryctrl->id) {
3856 memcpy(queryctrl,
3857 &vino_saa7191_v4l2_controls[i],
3858 sizeof(struct v4l2_queryctrl));
3859 queryctrl->reserved[0] = 0;
3860 goto found;
3861 }
3862 }
3863
3864 err = -EINVAL;
3865 break;
3866 default:
3867 err = -EINVAL;
3868 }
3869
3870 found:
3871 spin_unlock_irqrestore(&vino_drvdata->input_lock, flags);
3872
3873 return err;
3874 }
3875
3876 static int vino_v4l2_g_ctrl(struct vino_channel_settings *vcs,
3877 struct v4l2_control *control)
3878 {
3879 unsigned long flags;
3880 int i;
3881 int err = 0;
3882
3883 spin_lock_irqsave(&vino_drvdata->input_lock, flags);
3884
3885 switch (vcs->input) {
3886 case VINO_INPUT_D1: {
3887 struct indycam_control indycam_ctrl;
3888
3889 for (i = 0; i < VINO_INDYCAM_V4L2_CONTROL_COUNT; i++) {
3890 if (vino_indycam_v4l2_controls[i].id ==
3891 control->id) {
3892 goto found1;
3893 }
3894 }
3895
3896 err = -EINVAL;
3897 goto out;
3898
3899 found1:
3900 indycam_ctrl.type = vino_indycam_v4l2_controls[i].reserved[0];
3901
3902 err = i2c_camera_command(DECODER_INDYCAM_GET_CONTROL,
3903 &indycam_ctrl);
3904 if (err) {
3905 err = -EINVAL;
3906 goto out;
3907 }
3908
3909 control->value = indycam_ctrl.value;
3910 break;
3911 }
3912 case VINO_INPUT_COMPOSITE:
3913 case VINO_INPUT_SVIDEO: {
3914 struct saa7191_control saa7191_ctrl;
3915
3916 for (i = 0; i < VINO_SAA7191_V4L2_CONTROL_COUNT; i++) {
3917 if (vino_saa7191_v4l2_controls[i].id ==
3918 control->id) {
3919 goto found2;
3920 }
3921 }
3922
3923 err = -EINVAL;
3924 goto out;
3925
3926 found2:
3927 saa7191_ctrl.type = vino_saa7191_v4l2_controls[i].reserved[0];
3928
3929 err = i2c_decoder_command(DECODER_SAA7191_GET_CONTROL,
3930 &saa7191_ctrl);
3931 if (err) {
3932 err = -EINVAL;
3933 goto out;
3934 }
3935
3936 control->value = saa7191_ctrl.value;
3937 break;
3938 }
3939 default:
3940 err = -EINVAL;
3941 }
3942
3943 out:
3944 spin_unlock_irqrestore(&vino_drvdata->input_lock, flags);
3945
3946 return err;
3947 }
3948
3949 static int vino_v4l2_s_ctrl(struct vino_channel_settings *vcs,
3950 struct v4l2_control *control)
3951 {
3952 unsigned long flags;
3953 int i;
3954 int err = 0;
3955
3956 spin_lock_irqsave(&vino_drvdata->input_lock, flags);
3957
3958 if (!vino_is_input_owner(vcs)) {
3959 err = -EBUSY;
3960 goto out;
3961 }
3962
3963 switch (vcs->input) {
3964 case VINO_INPUT_D1: {
3965 struct indycam_control indycam_ctrl;
3966
3967 for (i = 0; i < VINO_INDYCAM_V4L2_CONTROL_COUNT; i++) {
3968 if (vino_indycam_v4l2_controls[i].id ==
3969 control->id) {
3970 if ((control->value >=
3971 vino_indycam_v4l2_controls[i].minimum)
3972 && (control->value <=
3973 vino_indycam_v4l2_controls[i].
3974 maximum)) {
3975 goto found1;
3976 } else {
3977 err = -ERANGE;
3978 goto out;
3979 }
3980 }
3981 }
3982
3983 err = -EINVAL;
3984 goto out;
3985
3986 found1:
3987 indycam_ctrl.type = vino_indycam_v4l2_controls[i].reserved[0];
3988 indycam_ctrl.value = control->value;
3989
3990 err = i2c_camera_command(DECODER_INDYCAM_SET_CONTROL,
3991 &indycam_ctrl);
3992 if (err)
3993 err = -EINVAL;
3994 break;
3995 }
3996 case VINO_INPUT_COMPOSITE:
3997 case VINO_INPUT_SVIDEO: {
3998 struct saa7191_control saa7191_ctrl;
3999
4000 for (i = 0; i < VINO_SAA7191_V4L2_CONTROL_COUNT; i++) {
4001 if (vino_saa7191_v4l2_controls[i].id ==
4002 control->id) {
4003 if ((control->value >=
4004 vino_saa7191_v4l2_controls[i].minimum)
4005 && (control->value <=
4006 vino_saa7191_v4l2_controls[i].
4007 maximum)) {
4008 goto found2;
4009 } else {
4010 err = -ERANGE;
4011 goto out;
4012 }
4013 }
4014 }
4015 err = -EINVAL;
4016 goto out;
4017
4018 found2:
4019 saa7191_ctrl.type = vino_saa7191_v4l2_controls[i].reserved[0];
4020 saa7191_ctrl.value = control->value;
4021
4022 err = i2c_decoder_command(DECODER_SAA7191_SET_CONTROL,
4023 &saa7191_ctrl);
4024 if (err)
4025 err = -EINVAL;
4026 break;
4027 }
4028 default:
4029 err = -EINVAL;
4030 }
4031
4032 out:
4033 spin_unlock_irqrestore(&vino_drvdata->input_lock, flags);
4034
4035 return err;
4036 }
4037
4038 /* File operations */
4039
4040 static int vino_open(struct inode *inode, struct file *file)
4041 {
4042 struct video_device *dev = video_devdata(file);
4043 struct vino_channel_settings *vcs = video_get_drvdata(dev);
4044 int ret = 0;
4045 dprintk("open(): channel = %c\n",
4046 (vcs->channel == VINO_CHANNEL_A) ? 'A' : 'B');
4047
4048 down(&vcs->sem);
4049
4050 if (vcs->users) {
4051 dprintk("open(): driver busy\n");
4052 ret = -EBUSY;
4053 goto out;
4054 }
4055
4056 ret = vino_acquire_input(vcs);
4057 if (ret) {
4058 dprintk("open(): vino_acquire_input() failed\n");
4059 goto out;
4060 }
4061
4062 vcs->users++;
4063
4064 out:
4065 up(&vcs->sem);
4066
4067 dprintk("open(): %s!\n", ret ? "failed" : "complete");
4068
4069 return ret;
4070 }
4071
4072 static int vino_close(struct inode *inode, struct file *file)
4073 {
4074 struct video_device *dev = video_devdata(file);
4075 struct vino_channel_settings *vcs = video_get_drvdata(dev);
4076 dprintk("close():\n");
4077
4078 down(&vcs->sem);
4079
4080 vcs->users--;
4081
4082 if (!vcs->users) {
4083 vino_release_input(vcs);
4084
4085 /* stop DMA and free buffers */
4086 vino_capture_stop(vcs);
4087 vino_queue_free(&vcs->fb_queue);
4088 }
4089
4090 up(&vcs->sem);
4091
4092 return 0;
4093 }
4094
4095 static void vino_vm_open(struct vm_area_struct *vma)
4096 {
4097 struct vino_framebuffer *fb = vma->vm_private_data;
4098
4099 fb->map_count++;
4100 dprintk("vino_vm_open(): count = %d\n", fb->map_count);
4101 }
4102
4103 static void vino_vm_close(struct vm_area_struct *vma)
4104 {
4105 struct vino_framebuffer *fb = vma->vm_private_data;
4106
4107 fb->map_count--;
4108 dprintk("vino_vm_close(): count = %d\n", fb->map_count);
4109 }
4110
4111 static struct vm_operations_struct vino_vm_ops = {
4112 .open = vino_vm_open,
4113 .close = vino_vm_close,
4114 };
4115
4116 static int vino_mmap(struct file *file, struct vm_area_struct *vma)
4117 {
4118 struct video_device *dev = video_devdata(file);
4119 struct vino_channel_settings *vcs = video_get_drvdata(dev);
4120
4121 unsigned long start = vma->vm_start;
4122 unsigned long size = vma->vm_end - vma->vm_start;
4123 unsigned long offset = vma->vm_pgoff << PAGE_SHIFT;
4124
4125 struct vino_framebuffer *fb = NULL;
4126 unsigned int i, length;
4127 int ret = 0;
4128
4129 dprintk("mmap():\n");
4130
4131 // TODO: reject mmap if already mapped
4132
4133 if (down_interruptible(&vcs->sem))
4134 return -EINTR;
4135
4136 if (vcs->reading) {
4137 ret = -EBUSY;
4138 goto out;
4139 }
4140
4141 // TODO: check queue type
4142
4143 if (!(vma->vm_flags & VM_WRITE)) {
4144 dprintk("mmap(): app bug: PROT_WRITE please\n");
4145 ret = -EINVAL;
4146 goto out;
4147 }
4148 if (!(vma->vm_flags & VM_SHARED)) {
4149 dprintk("mmap(): app bug: MAP_SHARED please\n");
4150 ret = -EINVAL;
4151 goto out;
4152 }
4153
4154 /* find the correct buffer using offset */
4155 length = vino_queue_get_length(&vcs->fb_queue);
4156 if (length == 0) {
4157 dprintk("mmap(): queue not initialized\n");
4158 ret = -EINVAL;
4159 goto out;
4160 }
4161
4162 for (i = 0; i < length; i++) {
4163 fb = vino_queue_get_buffer(&vcs->fb_queue, i);
4164 if (fb == NULL) {
4165 dprintk("mmap(): vino_queue_get_buffer() failed\n");
4166 ret = -EINVAL;
4167 goto out;
4168 }
4169
4170 if (fb->offset == offset)
4171 goto found;
4172 }
4173
4174 dprintk("mmap(): invalid offset = %lu\n", offset);
4175 ret = -EINVAL;
4176 goto out;
4177
4178 found:
4179 dprintk("mmap(): buffer = %d\n", i);
4180
4181 if (size > (fb->desc_table.page_count * PAGE_SIZE)) {
4182 dprintk("mmap(): failed: size = %lu > %lu\n",
4183 size, fb->desc_table.page_count * PAGE_SIZE);
4184 ret = -EINVAL;
4185 goto out;
4186 }
4187
4188 for (i = 0; i < fb->desc_table.page_count; i++) {
4189 unsigned long pfn =
4190 virt_to_phys((void *)fb->desc_table.virtual[i]) >>
4191 PAGE_SHIFT;
4192
4193 if (size < PAGE_SIZE)
4194 break;
4195
4196 // protection was: PAGE_READONLY
4197 if (remap_pfn_range(vma, start, pfn, PAGE_SIZE,
4198 vma->vm_page_prot)) {
4199 dprintk("mmap(): remap_pfn_range() failed\n");
4200 ret = -EAGAIN;
4201 goto out;
4202 }
4203
4204 start += PAGE_SIZE;
4205 size -= PAGE_SIZE;
4206 }
4207
4208 fb->map_count = 1;
4209
4210 vma->vm_flags |= VM_DONTEXPAND | VM_RESERVED;
4211 vma->vm_flags &= ~VM_IO;
4212 vma->vm_private_data = fb;
4213 vma->vm_file = file;
4214 vma->vm_ops = &vino_vm_ops;
4215
4216 out:
4217 up(&vcs->sem);
4218
4219 return ret;
4220 }
4221
4222 static unsigned int vino_poll(struct file *file, poll_table *pt)
4223 {
4224 struct video_device *dev = video_devdata(file);
4225 struct vino_channel_settings *vcs = video_get_drvdata(dev);
4226 unsigned int outgoing;
4227 unsigned int ret = 0;
4228
4229 // lock mutex (?)
4230 // TODO: this has to be corrected for different read modes
4231
4232 dprintk("poll():\n");
4233
4234 if (vino_queue_get_outgoing(&vcs->fb_queue, &outgoing)) {
4235 dprintk("poll(): vino_queue_get_outgoing() failed\n");
4236 ret = POLLERR;
4237 goto error;
4238 }
4239 if (outgoing > 0)
4240 goto over;
4241
4242 poll_wait(file, &vcs->fb_queue.frame_wait_queue, pt);
4243
4244 if (vino_queue_get_outgoing(&vcs->fb_queue, &outgoing)) {
4245 dprintk("poll(): vino_queue_get_outgoing() failed\n");
4246 ret = POLLERR;
4247 goto error;
4248 }
4249
4250 over:
4251 dprintk("poll(): data %savailable\n",
4252 (outgoing > 0) ? "" : "not ");
4253
4254 if (outgoing > 0)
4255 ret = POLLIN | POLLRDNORM;
4256
4257 error:
4258
4259 return ret;
4260 }
4261
4262 static int vino_do_ioctl(struct inode *inode, struct file *file,
4263 unsigned int cmd, void *arg)
4264 {
4265 struct video_device *dev = video_devdata(file);
4266 struct vino_channel_settings *vcs = video_get_drvdata(dev);
4267
4268 #ifdef VINO_DEBUG
4269 switch (_IOC_TYPE(cmd)) {
4270 case 'v':
4271 dprintk("ioctl(): V4L1 unsupported (0x%08x)\n", cmd);
4272 break;
4273 case 'V':
4274 dprintk("ioctl(): V4L2 %s (0x%08x)\n",
4275 v4l2_ioctl_names[_IOC_NR(cmd)], cmd);
4276 break;
4277 default:
4278 dprintk("ioctl(): unsupported command 0x%08x\n", cmd);
4279 }
4280 #endif
4281
4282 switch (cmd) {
4283 /* V4L2 interface */
4284 case VIDIOC_QUERYCAP: {
4285 vino_v4l2_querycap(arg);
4286 break;
4287 }
4288 case VIDIOC_ENUMINPUT: {
4289 return vino_v4l2_enuminput(vcs, arg);
4290 }
4291 case VIDIOC_G_INPUT: {
4292 return vino_v4l2_g_input(vcs, arg);
4293 }
4294 case VIDIOC_S_INPUT: {
4295 return vino_v4l2_s_input(vcs, arg);
4296 }
4297 case VIDIOC_ENUMSTD: {
4298 return vino_v4l2_enumstd(vcs, arg);
4299 }
4300 case VIDIOC_QUERYSTD: {
4301 return vino_v4l2_querystd(vcs, arg);
4302 }
4303 case VIDIOC_G_STD: {
4304 return vino_v4l2_g_std(vcs, arg);
4305 }
4306 case VIDIOC_S_STD: {
4307 return vino_v4l2_s_std(vcs, arg);
4308 }
4309 case VIDIOC_ENUM_FMT: {
4310 return vino_v4l2_enum_fmt(vcs, arg);
4311 }
4312 case VIDIOC_TRY_FMT: {
4313 return vino_v4l2_try_fmt(vcs, arg);
4314 }
4315 case VIDIOC_G_FMT: {
4316 return vino_v4l2_g_fmt(vcs, arg);
4317 }
4318 case VIDIOC_S_FMT: {
4319 return vino_v4l2_s_fmt(vcs, arg);
4320 }
4321 case VIDIOC_CROPCAP: {
4322 return vino_v4l2_cropcap(vcs, arg);
4323 }
4324 case VIDIOC_G_CROP: {
4325 return vino_v4l2_g_crop(vcs, arg);
4326 }
4327 case VIDIOC_S_CROP: {
4328 return vino_v4l2_s_crop(vcs, arg);
4329 }
4330 case VIDIOC_G_PARM: {
4331 return vino_v4l2_g_parm(vcs, arg);
4332 }
4333 case VIDIOC_S_PARM: {
4334 return vino_v4l2_s_parm(vcs, arg);
4335 }
4336 case VIDIOC_REQBUFS: {
4337 return vino_v4l2_reqbufs(vcs, arg);
4338 }
4339 case VIDIOC_QUERYBUF: {
4340 return vino_v4l2_querybuf(vcs, arg);
4341 }
4342 case VIDIOC_QBUF: {
4343 return vino_v4l2_qbuf(vcs, arg);
4344 }
4345 case VIDIOC_DQBUF: {
4346 return vino_v4l2_dqbuf(vcs, arg, file->f_flags & O_NONBLOCK);
4347 }
4348 case VIDIOC_STREAMON: {
4349 return vino_v4l2_streamon(vcs);
4350 }
4351 case VIDIOC_STREAMOFF: {
4352 return vino_v4l2_streamoff(vcs);
4353 }
4354 case VIDIOC_QUERYCTRL: {
4355 return vino_v4l2_queryctrl(vcs, arg);
4356 }
4357 case VIDIOC_G_CTRL: {
4358 return vino_v4l2_g_ctrl(vcs, arg);
4359 }
4360 case VIDIOC_S_CTRL: {
4361 return vino_v4l2_s_ctrl(vcs, arg);
4362 }
4363 default:
4364 return -ENOIOCTLCMD;
4365 }
4366
4367 return 0;
4368 }
4369
4370 static int vino_ioctl(struct inode *inode, struct file *file,
4371 unsigned int cmd, unsigned long arg)
4372 {
4373 struct video_device *dev = video_devdata(file);
4374 struct vino_channel_settings *vcs = video_get_drvdata(dev);
4375 int ret;
4376
4377 if (down_interruptible(&vcs->sem))
4378 return -EINTR;
4379
4380 ret = video_usercopy(inode, file, cmd, arg, vino_do_ioctl);
4381
4382 up(&vcs->sem);
4383
4384 return ret;
4385 }
4386
4387 /* Initialization and cleanup */
4388
4389 // __initdata
4390 static int vino_init_stage = 0;
4391
4392 static struct file_operations vino_fops = {
4393 .owner = THIS_MODULE,
4394 .open = vino_open,
4395 .release = vino_close,
4396 .ioctl = vino_ioctl,
4397 .mmap = vino_mmap,
4398 .poll = vino_poll,
4399 .llseek = no_llseek,
4400 };
4401
4402 static struct video_device v4l_device_template = {
4403 .name = "NOT SET",
4404 //.type = VID_TYPE_CAPTURE | VID_TYPE_SUBCAPTURE |
4405 // VID_TYPE_CLIPPING | VID_TYPE_SCALES, VID_TYPE_OVERLAY
4406 .hardware = VID_HARDWARE_VINO,
4407 .fops = &vino_fops,
4408 .minor = -1,
4409 };
4410
4411 static void vino_module_cleanup(int stage)
4412 {
4413 switch(stage) {
4414 case 10:
4415 video_unregister_device(vino_drvdata->b.v4l_device);
4416 vino_drvdata->b.v4l_device = NULL;
4417 case 9:
4418 video_unregister_device(vino_drvdata->a.v4l_device);
4419 vino_drvdata->a.v4l_device = NULL;
4420 case 8:
4421 vino_i2c_del_bus();
4422 case 7:
4423 free_irq(SGI_VINO_IRQ, NULL);
4424 case 6:
4425 if (vino_drvdata->b.v4l_device) {
4426 video_device_release(vino_drvdata->b.v4l_device);
4427 vino_drvdata->b.v4l_device = NULL;
4428 }
4429 case 5:
4430 if (vino_drvdata->a.v4l_device) {
4431 video_device_release(vino_drvdata->a.v4l_device);
4432 vino_drvdata->a.v4l_device = NULL;
4433 }
4434 case 4:
4435 /* all entries in dma_cpu dummy table have the same address */
4436 dma_unmap_single(NULL,
4437 vino_drvdata->dummy_desc_table.dma_cpu[0],
4438 PAGE_SIZE, DMA_FROM_DEVICE);
4439 dma_free_coherent(NULL, VINO_DUMMY_DESC_COUNT
4440 * sizeof(dma_addr_t),
4441 (void *)vino_drvdata->
4442 dummy_desc_table.dma_cpu,
4443 vino_drvdata->dummy_desc_table.dma);
4444 case 3:
4445 free_page(vino_drvdata->dummy_page);
4446 case 2:
4447 kfree(vino_drvdata);
4448 case 1:
4449 iounmap(vino);
4450 case 0:
4451 break;
4452 default:
4453 dprintk("vino_module_cleanup(): invalid cleanup stage = %d\n",
4454 stage);
4455 }
4456 }
4457
4458 static int vino_probe(void)
4459 {
4460 unsigned long rev_id;
4461
4462 if (ip22_is_fullhouse()) {
4463 printk(KERN_ERR "VINO doesn't exist in IP22 Fullhouse\n");
4464 return -ENODEV;
4465 }
4466
4467 if (!(sgimc->systemid & SGIMC_SYSID_EPRESENT)) {
4468 printk(KERN_ERR "VINO is not found (EISA BUS not present)\n");
4469 return -ENODEV;
4470 }
4471
4472 vino = (struct sgi_vino *)ioremap(VINO_BASE, sizeof(struct sgi_vino));
4473 if (!vino) {
4474 printk(KERN_ERR "VINO: ioremap() failed\n");
4475 return -EIO;
4476 }
4477 vino_init_stage++;
4478
4479 if (get_dbe(rev_id, &(vino->rev_id))) {
4480 printk(KERN_ERR "Failed to read VINO revision register\n");
4481 vino_module_cleanup(vino_init_stage);
4482 return -ENODEV;
4483 }
4484
4485 if (VINO_ID_VALUE(rev_id) != VINO_CHIP_ID) {
4486 printk(KERN_ERR "Unknown VINO chip ID (Rev/ID: 0x%02lx)\n",
4487 rev_id);
4488 vino_module_cleanup(vino_init_stage);
4489 return -ENODEV;
4490 }
4491
4492 printk(KERN_INFO "VINO revision %ld found\n", VINO_REV_NUM(rev_id));
4493
4494 return 0;
4495 }
4496
4497 static int vino_init(void)
4498 {
4499 dma_addr_t dma_dummy_address;
4500 int i;
4501
4502 vino_drvdata = (struct vino_settings *)
4503 kmalloc(sizeof(struct vino_settings), GFP_KERNEL);
4504 if (!vino_drvdata) {
4505 vino_module_cleanup(vino_init_stage);
4506 return -ENOMEM;
4507 }
4508 memset(vino_drvdata, 0, sizeof(struct vino_settings));
4509 vino_init_stage++;
4510
4511 /* create a dummy dma descriptor */
4512 vino_drvdata->dummy_page = get_zeroed_page(GFP_KERNEL | GFP_DMA);
4513 if (!vino_drvdata->dummy_page) {
4514 vino_module_cleanup(vino_init_stage);
4515 return -ENOMEM;
4516 }
4517 vino_init_stage++;
4518
4519 // TODO: use page_count in dummy_desc_table
4520
4521 vino_drvdata->dummy_desc_table.dma_cpu =
4522 dma_alloc_coherent(NULL,
4523 VINO_DUMMY_DESC_COUNT * sizeof(dma_addr_t),
4524 &vino_drvdata->dummy_desc_table.dma,
4525 GFP_KERNEL | GFP_DMA);
4526 if (!vino_drvdata->dummy_desc_table.dma_cpu) {
4527 vino_module_cleanup(vino_init_stage);
4528 return -ENOMEM;
4529 }
4530 vino_init_stage++;
4531
4532 dma_dummy_address = dma_map_single(NULL,
4533 (void *)vino_drvdata->dummy_page,
4534 PAGE_SIZE, DMA_FROM_DEVICE);
4535 for (i = 0; i < VINO_DUMMY_DESC_COUNT; i++) {
4536 vino_drvdata->dummy_desc_table.dma_cpu[i] = dma_dummy_address;
4537 }
4538
4539 /* initialize VINO */
4540
4541 vino->control = 0;
4542 vino->a.next_4_desc = vino_drvdata->dummy_desc_table.dma;
4543 vino->b.next_4_desc = vino_drvdata->dummy_desc_table.dma;
4544 udelay(VINO_DESC_FETCH_DELAY);
4545
4546 vino->intr_status = 0;
4547
4548 vino->a.fifo_thres = VINO_FIFO_THRESHOLD_DEFAULT;
4549 vino->b.fifo_thres = VINO_FIFO_THRESHOLD_DEFAULT;
4550
4551 return 0;
4552 }
4553
4554 static int vino_init_channel_settings(struct vino_channel_settings *vcs,
4555 unsigned int channel, const char *name)
4556 {
4557 vcs->channel = channel;
4558 vcs->input = VINO_INPUT_NONE;
4559 vcs->alpha = 0;
4560 vcs->users = 0;
4561 vcs->data_format = VINO_DATA_FMT_GREY;
4562 vcs->data_norm = VINO_DATA_NORM_NTSC;
4563 vcs->decimation = 1;
4564 vino_set_default_clipping(vcs);
4565 vino_set_default_framerate(vcs);
4566
4567 vcs->capturing = 0;
4568
4569 init_MUTEX(&vcs->sem);
4570 spin_lock_init(&vcs->capture_lock);
4571
4572 init_MUTEX(&vcs->fb_queue.queue_sem);
4573 spin_lock_init(&vcs->fb_queue.queue_lock);
4574 init_waitqueue_head(&vcs->fb_queue.frame_wait_queue);
4575
4576 vcs->v4l_device = video_device_alloc();
4577 if (!vcs->v4l_device) {
4578 vino_module_cleanup(vino_init_stage);
4579 return -ENOMEM;
4580 }
4581 vino_init_stage++;
4582
4583 memcpy(vcs->v4l_device, &v4l_device_template,
4584 sizeof(struct video_device));
4585 strcpy(vcs->v4l_device->name, name);
4586 vcs->v4l_device->release = video_device_release;
4587
4588 video_set_drvdata(vcs->v4l_device, vcs);
4589
4590 return 0;
4591 }
4592
4593 static int __init vino_module_init(void)
4594 {
4595 int ret;
4596
4597 printk(KERN_INFO "SGI VINO driver version %s\n",
4598 VINO_MODULE_VERSION);
4599
4600 ret = vino_probe();
4601 if (ret)
4602 return ret;
4603
4604 ret = vino_init();
4605 if (ret)
4606 return ret;
4607
4608 /* initialize data structures */
4609
4610 spin_lock_init(&vino_drvdata->vino_lock);
4611 spin_lock_init(&vino_drvdata->input_lock);
4612
4613 ret = vino_init_channel_settings(&vino_drvdata->a, VINO_CHANNEL_A,
4614 vino_v4l_device_name_a);
4615 if (ret)
4616 return ret;
4617
4618 ret = vino_init_channel_settings(&vino_drvdata->b, VINO_CHANNEL_B,
4619 vino_v4l_device_name_b);
4620 if (ret)
4621 return ret;
4622
4623 /* initialize hardware and register V4L devices */
4624
4625 ret = request_irq(SGI_VINO_IRQ, vino_interrupt, 0,
4626 vino_driver_description, NULL);
4627 if (ret) {
4628 printk(KERN_ERR "VINO: requesting IRQ %02d failed\n",
4629 SGI_VINO_IRQ);
4630 vino_module_cleanup(vino_init_stage);
4631 return -EAGAIN;
4632 }
4633 vino_init_stage++;
4634
4635 ret = vino_i2c_add_bus();
4636 if (ret) {
4637 printk(KERN_ERR "VINO I2C bus registration failed\n");
4638 vino_module_cleanup(vino_init_stage);
4639 return ret;
4640 }
4641 vino_init_stage++;
4642
4643 ret = video_register_device(vino_drvdata->a.v4l_device,
4644 VFL_TYPE_GRABBER, -1);
4645 if (ret < 0) {
4646 printk(KERN_ERR "VINO channel A Video4Linux-device "
4647 "registration failed\n");
4648 vino_module_cleanup(vino_init_stage);
4649 return -EINVAL;
4650 }
4651 vino_init_stage++;
4652
4653 ret = video_register_device(vino_drvdata->b.v4l_device,
4654 VFL_TYPE_GRABBER, -1);
4655 if (ret < 0) {
4656 printk(KERN_ERR "VINO channel B Video4Linux-device "
4657 "registration failed\n");
4658 vino_module_cleanup(vino_init_stage);
4659 return -EINVAL;
4660 }
4661 vino_init_stage++;
4662
4663 #if defined(CONFIG_KMOD) && defined(MODULE)
4664 request_module("saa7191");
4665 request_module("indycam");
4666 #endif
4667
4668 dprintk("init complete!\n");
4669
4670 return 0;
4671 }
4672
4673 static void __exit vino_module_exit(void)
4674 {
4675 dprintk("exiting, stage = %d ...\n", vino_init_stage);
4676 vino_module_cleanup(vino_init_stage);
4677 dprintk("cleanup complete, exit!\n");
4678 }
4679
4680 module_init(vino_module_init);
4681 module_exit(vino_module_exit);
Software Suspend 2 for 2.6.18.y (mirror)