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[mirror_ubuntu-artful-kernel.git] / drivers / media / video / vino.c
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 * v4l2_device/v4l2_subdev conversion by:
13 * Copyright (C) 2009 Hans Verkuil <hverkuil@xs4all.nl>
14 *
15 * Note: this conversion is untested! Please contact the linux-media
16 * mailinglist if you can test this, together with the test results.
17 */
18
19 /*
20 * TODO:
21 * - remove "mark pages reserved-hacks" from memory allocation code
22 * and implement fault()
23 * - check decimation, calculating and reporting image size when
24 * using decimation
25 * - implement read(), user mode buffers and overlay (?)
26 */
27
28 #include <linux/init.h>
29 #include <linux/module.h>
30 #include <linux/delay.h>
31 #include <linux/dma-mapping.h>
32 #include <linux/errno.h>
33 #include <linux/fs.h>
34 #include <linux/interrupt.h>
35 #include <linux/kernel.h>
36 #include <linux/slab.h>
37 #include <linux/mm.h>
38 #include <linux/time.h>
39 #include <linux/version.h>
40 #include <linux/kmod.h>
41
42 #include <linux/i2c.h>
43
44 #include <linux/videodev2.h>
45 #include <media/v4l2-device.h>
46 #include <media/v4l2-ioctl.h>
47 #include <linux/mutex.h>
48
49 #include <asm/paccess.h>
50 #include <asm/io.h>
51 #include <asm/sgi/ip22.h>
52 #include <asm/sgi/mc.h>
53
54 #include "vino.h"
55 #include "saa7191.h"
56 #include "indycam.h"
57
58 /* Uncomment the following line to get lots and lots of (mostly useless)
59 * debug info.
60 * Note that the debug output also slows down the driver significantly */
61 // #define VINO_DEBUG
62 // #define VINO_DEBUG_INT
63
64 #define VINO_MODULE_VERSION "0.0.6"
65 #define VINO_VERSION_CODE KERNEL_VERSION(0, 0, 6)
66
67 MODULE_DESCRIPTION("SGI VINO Video4Linux2 driver");
68 MODULE_VERSION(VINO_MODULE_VERSION);
69 MODULE_AUTHOR("Mikael Nousiainen <tmnousia@cc.hut.fi>");
70 MODULE_LICENSE("GPL");
71
72 #ifdef VINO_DEBUG
73 #define dprintk(x...) printk("VINO: " x);
74 #else
75 #define dprintk(x...)
76 #endif
77
78 #define VINO_NO_CHANNEL 0
79 #define VINO_CHANNEL_A 1
80 #define VINO_CHANNEL_B 2
81
82 #define VINO_PAL_WIDTH 768
83 #define VINO_PAL_HEIGHT 576
84 #define VINO_NTSC_WIDTH 640
85 #define VINO_NTSC_HEIGHT 480
86
87 #define VINO_MIN_WIDTH 32
88 #define VINO_MIN_HEIGHT 32
89
90 #define VINO_CLIPPING_START_ODD_D1 1
91 #define VINO_CLIPPING_START_ODD_PAL 15
92 #define VINO_CLIPPING_START_ODD_NTSC 12
93
94 #define VINO_CLIPPING_START_EVEN_D1 2
95 #define VINO_CLIPPING_START_EVEN_PAL 15
96 #define VINO_CLIPPING_START_EVEN_NTSC 12
97
98 #define VINO_INPUT_CHANNEL_COUNT 3
99
100 /* the number is the index for vino_inputs */
101 #define VINO_INPUT_NONE -1
102 #define VINO_INPUT_COMPOSITE 0
103 #define VINO_INPUT_SVIDEO 1
104 #define VINO_INPUT_D1 2
105
106 #define VINO_PAGE_RATIO (PAGE_SIZE / VINO_PAGE_SIZE)
107
108 #define VINO_FIFO_THRESHOLD_DEFAULT 16
109
110 #define VINO_FRAMEBUFFER_SIZE ((VINO_PAL_WIDTH \
111 * VINO_PAL_HEIGHT * 4 \
112 + 3 * PAGE_SIZE) & ~(PAGE_SIZE - 1))
113
114 #define VINO_FRAMEBUFFER_COUNT_MAX 8
115
116 #define VINO_FRAMEBUFFER_UNUSED 0
117 #define VINO_FRAMEBUFFER_IN_USE 1
118 #define VINO_FRAMEBUFFER_READY 2
119
120 #define VINO_QUEUE_ERROR -1
121 #define VINO_QUEUE_MAGIC 0x20050125
122
123 #define VINO_MEMORY_NONE 0
124 #define VINO_MEMORY_MMAP 1
125 #define VINO_MEMORY_USERPTR 2
126
127 #define VINO_DUMMY_DESC_COUNT 4
128 #define VINO_DESC_FETCH_DELAY 5 /* microseconds */
129
130 #define VINO_MAX_FRAME_SKIP_COUNT 128
131
132 /* the number is the index for vino_data_formats */
133 #define VINO_DATA_FMT_NONE -1
134 #define VINO_DATA_FMT_GREY 0
135 #define VINO_DATA_FMT_RGB332 1
136 #define VINO_DATA_FMT_RGB32 2
137 #define VINO_DATA_FMT_YUV 3
138
139 #define VINO_DATA_FMT_COUNT 4
140
141 /* the number is the index for vino_data_norms */
142 #define VINO_DATA_NORM_NONE -1
143 #define VINO_DATA_NORM_NTSC 0
144 #define VINO_DATA_NORM_PAL 1
145 #define VINO_DATA_NORM_SECAM 2
146 #define VINO_DATA_NORM_D1 3
147
148 #define VINO_DATA_NORM_COUNT 4
149
150 /* I2C controller flags */
151 #define SGI_I2C_FORCE_IDLE (0 << 0)
152 #define SGI_I2C_NOT_IDLE (1 << 0)
153 #define SGI_I2C_WRITE (0 << 1)
154 #define SGI_I2C_READ (1 << 1)
155 #define SGI_I2C_RELEASE_BUS (0 << 2)
156 #define SGI_I2C_HOLD_BUS (1 << 2)
157 #define SGI_I2C_XFER_DONE (0 << 4)
158 #define SGI_I2C_XFER_BUSY (1 << 4)
159 #define SGI_I2C_ACK (0 << 5)
160 #define SGI_I2C_NACK (1 << 5)
161 #define SGI_I2C_BUS_OK (0 << 7)
162 #define SGI_I2C_BUS_ERR (1 << 7)
163
164 /* Internal data structure definitions */
165
166 struct vino_input {
167 char *name;
168 v4l2_std_id std;
169 };
170
171 struct vino_clipping {
172 unsigned int left, right, top, bottom;
173 };
174
175 struct vino_data_format {
176 /* the description */
177 char *description;
178 /* bytes per pixel */
179 unsigned int bpp;
180 /* V4L2 fourcc code */
181 __u32 pixelformat;
182 /* V4L2 colorspace (duh!) */
183 enum v4l2_colorspace colorspace;
184 };
185
186 struct vino_data_norm {
187 char *description;
188 unsigned int width, height;
189 struct vino_clipping odd;
190 struct vino_clipping even;
191
192 v4l2_std_id std;
193 unsigned int fps_min, fps_max;
194 __u32 framelines;
195 };
196
197 struct vino_descriptor_table {
198 /* the number of PAGE_SIZE sized pages in the buffer */
199 unsigned int page_count;
200 /* virtual (kmalloc'd) pointers to the actual data
201 * (in PAGE_SIZE chunks, used with mmap streaming) */
202 unsigned long *virtual;
203
204 /* cpu address for the VINO descriptor table
205 * (contains DMA addresses, VINO_PAGE_SIZE chunks) */
206 unsigned long *dma_cpu;
207 /* dma address for the VINO descriptor table
208 * (contains DMA addresses, VINO_PAGE_SIZE chunks) */
209 dma_addr_t dma;
210 };
211
212 struct vino_framebuffer {
213 /* identifier nubmer */
214 unsigned int id;
215 /* the length of the whole buffer */
216 unsigned int size;
217 /* the length of actual data in buffer */
218 unsigned int data_size;
219 /* the data format */
220 unsigned int data_format;
221 /* the state of buffer data */
222 unsigned int state;
223 /* is the buffer mapped in user space? */
224 unsigned int map_count;
225 /* memory offset for mmap() */
226 unsigned int offset;
227 /* frame counter */
228 unsigned int frame_counter;
229 /* timestamp (written when image capture finishes) */
230 struct timeval timestamp;
231
232 struct vino_descriptor_table desc_table;
233
234 spinlock_t state_lock;
235 };
236
237 struct vino_framebuffer_fifo {
238 unsigned int length;
239
240 unsigned int used;
241 unsigned int head;
242 unsigned int tail;
243
244 unsigned int data[VINO_FRAMEBUFFER_COUNT_MAX];
245 };
246
247 struct vino_framebuffer_queue {
248 unsigned int magic;
249
250 /* VINO_MEMORY_NONE, VINO_MEMORY_MMAP or VINO_MEMORY_USERPTR */
251 unsigned int type;
252 unsigned int length;
253
254 /* data field of in and out contain index numbers for buffer */
255 struct vino_framebuffer_fifo in;
256 struct vino_framebuffer_fifo out;
257
258 struct vino_framebuffer *buffer[VINO_FRAMEBUFFER_COUNT_MAX];
259
260 spinlock_t queue_lock;
261 struct mutex queue_mutex;
262 wait_queue_head_t frame_wait_queue;
263 };
264
265 struct vino_interrupt_data {
266 struct timeval timestamp;
267 unsigned int frame_counter;
268 unsigned int skip_count;
269 unsigned int skip;
270 };
271
272 struct vino_channel_settings {
273 unsigned int channel;
274
275 int input;
276 unsigned int data_format;
277 unsigned int data_norm;
278 struct vino_clipping clipping;
279 unsigned int decimation;
280 unsigned int line_size;
281 unsigned int alpha;
282 unsigned int fps;
283 unsigned int framert_reg;
284
285 unsigned int fifo_threshold;
286
287 struct vino_framebuffer_queue fb_queue;
288
289 /* number of the current field */
290 unsigned int field;
291
292 /* read in progress */
293 int reading;
294 /* streaming is active */
295 int streaming;
296 /* the driver is currently processing the queue */
297 int capturing;
298
299 struct mutex mutex;
300 spinlock_t capture_lock;
301
302 unsigned int users;
303
304 struct vino_interrupt_data int_data;
305
306 /* V4L support */
307 struct video_device *vdev;
308 };
309
310 struct vino_settings {
311 struct v4l2_device v4l2_dev;
312 struct vino_channel_settings a;
313 struct vino_channel_settings b;
314
315 /* the channel which owns this client:
316 * VINO_NO_CHANNEL, VINO_CHANNEL_A or VINO_CHANNEL_B */
317 unsigned int decoder_owner;
318 struct v4l2_subdev *decoder;
319 unsigned int camera_owner;
320 struct v4l2_subdev *camera;
321
322 /* a lock for vino register access */
323 spinlock_t vino_lock;
324 /* a lock for channel input changes */
325 spinlock_t input_lock;
326
327 unsigned long dummy_page;
328 struct vino_descriptor_table dummy_desc_table;
329 };
330
331 /* Module parameters */
332
333 /*
334 * Using vino_pixel_conversion the ABGR32-format pixels supplied
335 * by the VINO chip can be converted to more common formats
336 * like RGBA32 (or probably RGB24 in the future). This way we
337 * can give out data that can be specified correctly with
338 * the V4L2-definitions.
339 *
340 * The pixel format is specified as RGBA32 when no conversion
341 * is used.
342 *
343 * Note that this only affects the 32-bit bit depth.
344 *
345 * Use non-zero value to enable conversion.
346 */
347 static int vino_pixel_conversion;
348
349 module_param_named(pixelconv, vino_pixel_conversion, int, 0);
350
351 MODULE_PARM_DESC(pixelconv,
352 "enable pixel conversion (non-zero value enables)");
353
354 /* Internal data structures */
355
356 static struct sgi_vino *vino;
357
358 static struct vino_settings *vino_drvdata;
359
360 #define camera_call(o, f, args...) \
361 v4l2_subdev_call(vino_drvdata->camera, o, f, ##args)
362 #define decoder_call(o, f, args...) \
363 v4l2_subdev_call(vino_drvdata->decoder, o, f, ##args)
364
365 static const char *vino_driver_name = "vino";
366 static const char *vino_driver_description = "SGI VINO";
367 static const char *vino_bus_name = "GIO64 bus";
368 static const char *vino_vdev_name_a = "SGI VINO Channel A";
369 static const char *vino_vdev_name_b = "SGI VINO Channel B";
370
371 static void vino_capture_tasklet(unsigned long channel);
372
373 DECLARE_TASKLET(vino_tasklet_a, vino_capture_tasklet, VINO_CHANNEL_A);
374 DECLARE_TASKLET(vino_tasklet_b, vino_capture_tasklet, VINO_CHANNEL_B);
375
376 static const struct vino_input vino_inputs[] = {
377 {
378 .name = "Composite",
379 .std = V4L2_STD_NTSC | V4L2_STD_PAL
380 | V4L2_STD_SECAM,
381 }, {
382 .name = "S-Video",
383 .std = V4L2_STD_NTSC | V4L2_STD_PAL
384 | V4L2_STD_SECAM,
385 }, {
386 .name = "D1/IndyCam",
387 .std = V4L2_STD_NTSC,
388 }
389 };
390
391 static const struct vino_data_format vino_data_formats[] = {
392 {
393 .description = "8-bit greyscale",
394 .bpp = 1,
395 .pixelformat = V4L2_PIX_FMT_GREY,
396 .colorspace = V4L2_COLORSPACE_SMPTE170M,
397 }, {
398 .description = "8-bit dithered RGB 3-3-2",
399 .bpp = 1,
400 .pixelformat = V4L2_PIX_FMT_RGB332,
401 .colorspace = V4L2_COLORSPACE_SRGB,
402 }, {
403 .description = "32-bit RGB",
404 .bpp = 4,
405 .pixelformat = V4L2_PIX_FMT_RGB32,
406 .colorspace = V4L2_COLORSPACE_SRGB,
407 }, {
408 .description = "YUV 4:2:2",
409 .bpp = 2,
410 .pixelformat = V4L2_PIX_FMT_YUYV, // XXX: swapped?
411 .colorspace = V4L2_COLORSPACE_SMPTE170M,
412 }
413 };
414
415 static const struct vino_data_norm vino_data_norms[] = {
416 {
417 .description = "NTSC",
418 .std = V4L2_STD_NTSC,
419 .fps_min = 6,
420 .fps_max = 30,
421 .framelines = 525,
422 .width = VINO_NTSC_WIDTH,
423 .height = VINO_NTSC_HEIGHT,
424 .odd = {
425 .top = VINO_CLIPPING_START_ODD_NTSC,
426 .left = 0,
427 .bottom = VINO_CLIPPING_START_ODD_NTSC
428 + VINO_NTSC_HEIGHT / 2 - 1,
429 .right = VINO_NTSC_WIDTH,
430 },
431 .even = {
432 .top = VINO_CLIPPING_START_EVEN_NTSC,
433 .left = 0,
434 .bottom = VINO_CLIPPING_START_EVEN_NTSC
435 + VINO_NTSC_HEIGHT / 2 - 1,
436 .right = VINO_NTSC_WIDTH,
437 },
438 }, {
439 .description = "PAL",
440 .std = V4L2_STD_PAL,
441 .fps_min = 5,
442 .fps_max = 25,
443 .framelines = 625,
444 .width = VINO_PAL_WIDTH,
445 .height = VINO_PAL_HEIGHT,
446 .odd = {
447 .top = VINO_CLIPPING_START_ODD_PAL,
448 .left = 0,
449 .bottom = VINO_CLIPPING_START_ODD_PAL
450 + VINO_PAL_HEIGHT / 2 - 1,
451 .right = VINO_PAL_WIDTH,
452 },
453 .even = {
454 .top = VINO_CLIPPING_START_EVEN_PAL,
455 .left = 0,
456 .bottom = VINO_CLIPPING_START_EVEN_PAL
457 + VINO_PAL_HEIGHT / 2 - 1,
458 .right = VINO_PAL_WIDTH,
459 },
460 }, {
461 .description = "SECAM",
462 .std = V4L2_STD_SECAM,
463 .fps_min = 5,
464 .fps_max = 25,
465 .framelines = 625,
466 .width = VINO_PAL_WIDTH,
467 .height = VINO_PAL_HEIGHT,
468 .odd = {
469 .top = VINO_CLIPPING_START_ODD_PAL,
470 .left = 0,
471 .bottom = VINO_CLIPPING_START_ODD_PAL
472 + VINO_PAL_HEIGHT / 2 - 1,
473 .right = VINO_PAL_WIDTH,
474 },
475 .even = {
476 .top = VINO_CLIPPING_START_EVEN_PAL,
477 .left = 0,
478 .bottom = VINO_CLIPPING_START_EVEN_PAL
479 + VINO_PAL_HEIGHT / 2 - 1,
480 .right = VINO_PAL_WIDTH,
481 },
482 }, {
483 .description = "NTSC/D1",
484 .std = V4L2_STD_NTSC,
485 .fps_min = 6,
486 .fps_max = 30,
487 .framelines = 525,
488 .width = VINO_NTSC_WIDTH,
489 .height = VINO_NTSC_HEIGHT,
490 .odd = {
491 .top = VINO_CLIPPING_START_ODD_D1,
492 .left = 0,
493 .bottom = VINO_CLIPPING_START_ODD_D1
494 + VINO_NTSC_HEIGHT / 2 - 1,
495 .right = VINO_NTSC_WIDTH,
496 },
497 .even = {
498 .top = VINO_CLIPPING_START_EVEN_D1,
499 .left = 0,
500 .bottom = VINO_CLIPPING_START_EVEN_D1
501 + VINO_NTSC_HEIGHT / 2 - 1,
502 .right = VINO_NTSC_WIDTH,
503 },
504 }
505 };
506
507 #define VINO_INDYCAM_V4L2_CONTROL_COUNT 9
508
509 struct v4l2_queryctrl vino_indycam_v4l2_controls[] = {
510 {
511 .id = V4L2_CID_AUTOGAIN,
512 .type = V4L2_CTRL_TYPE_BOOLEAN,
513 .name = "Automatic Gain Control",
514 .minimum = 0,
515 .maximum = 1,
516 .step = 1,
517 .default_value = INDYCAM_AGC_DEFAULT,
518 }, {
519 .id = V4L2_CID_AUTO_WHITE_BALANCE,
520 .type = V4L2_CTRL_TYPE_BOOLEAN,
521 .name = "Automatic White Balance",
522 .minimum = 0,
523 .maximum = 1,
524 .step = 1,
525 .default_value = INDYCAM_AWB_DEFAULT,
526 }, {
527 .id = V4L2_CID_GAIN,
528 .type = V4L2_CTRL_TYPE_INTEGER,
529 .name = "Gain",
530 .minimum = INDYCAM_GAIN_MIN,
531 .maximum = INDYCAM_GAIN_MAX,
532 .step = 1,
533 .default_value = INDYCAM_GAIN_DEFAULT,
534 }, {
535 .id = INDYCAM_CONTROL_RED_SATURATION,
536 .type = V4L2_CTRL_TYPE_INTEGER,
537 .name = "Red Saturation",
538 .minimum = INDYCAM_RED_SATURATION_MIN,
539 .maximum = INDYCAM_RED_SATURATION_MAX,
540 .step = 1,
541 .default_value = INDYCAM_RED_SATURATION_DEFAULT,
542 }, {
543 .id = INDYCAM_CONTROL_BLUE_SATURATION,
544 .type = V4L2_CTRL_TYPE_INTEGER,
545 .name = "Blue Saturation",
546 .minimum = INDYCAM_BLUE_SATURATION_MIN,
547 .maximum = INDYCAM_BLUE_SATURATION_MAX,
548 .step = 1,
549 .default_value = INDYCAM_BLUE_SATURATION_DEFAULT,
550 }, {
551 .id = V4L2_CID_RED_BALANCE,
552 .type = V4L2_CTRL_TYPE_INTEGER,
553 .name = "Red Balance",
554 .minimum = INDYCAM_RED_BALANCE_MIN,
555 .maximum = INDYCAM_RED_BALANCE_MAX,
556 .step = 1,
557 .default_value = INDYCAM_RED_BALANCE_DEFAULT,
558 }, {
559 .id = V4L2_CID_BLUE_BALANCE,
560 .type = V4L2_CTRL_TYPE_INTEGER,
561 .name = "Blue Balance",
562 .minimum = INDYCAM_BLUE_BALANCE_MIN,
563 .maximum = INDYCAM_BLUE_BALANCE_MAX,
564 .step = 1,
565 .default_value = INDYCAM_BLUE_BALANCE_DEFAULT,
566 }, {
567 .id = V4L2_CID_EXPOSURE,
568 .type = V4L2_CTRL_TYPE_INTEGER,
569 .name = "Shutter Control",
570 .minimum = INDYCAM_SHUTTER_MIN,
571 .maximum = INDYCAM_SHUTTER_MAX,
572 .step = 1,
573 .default_value = INDYCAM_SHUTTER_DEFAULT,
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 }
583 };
584
585 #define VINO_SAA7191_V4L2_CONTROL_COUNT 9
586
587 struct v4l2_queryctrl vino_saa7191_v4l2_controls[] = {
588 {
589 .id = V4L2_CID_HUE,
590 .type = V4L2_CTRL_TYPE_INTEGER,
591 .name = "Hue",
592 .minimum = SAA7191_HUE_MIN,
593 .maximum = SAA7191_HUE_MAX,
594 .step = 1,
595 .default_value = SAA7191_HUE_DEFAULT,
596 }, {
597 .id = SAA7191_CONTROL_BANDPASS,
598 .type = V4L2_CTRL_TYPE_INTEGER,
599 .name = "Luminance Bandpass",
600 .minimum = SAA7191_BANDPASS_MIN,
601 .maximum = SAA7191_BANDPASS_MAX,
602 .step = 1,
603 .default_value = SAA7191_BANDPASS_DEFAULT,
604 }, {
605 .id = SAA7191_CONTROL_BANDPASS_WEIGHT,
606 .type = V4L2_CTRL_TYPE_INTEGER,
607 .name = "Luminance Bandpass Weight",
608 .minimum = SAA7191_BANDPASS_WEIGHT_MIN,
609 .maximum = SAA7191_BANDPASS_WEIGHT_MAX,
610 .step = 1,
611 .default_value = SAA7191_BANDPASS_WEIGHT_DEFAULT,
612 }, {
613 .id = SAA7191_CONTROL_CORING,
614 .type = V4L2_CTRL_TYPE_INTEGER,
615 .name = "HF Luminance Coring",
616 .minimum = SAA7191_CORING_MIN,
617 .maximum = SAA7191_CORING_MAX,
618 .step = 1,
619 .default_value = SAA7191_CORING_DEFAULT,
620 }, {
621 .id = SAA7191_CONTROL_FORCE_COLOUR,
622 .type = V4L2_CTRL_TYPE_BOOLEAN,
623 .name = "Force Colour",
624 .minimum = SAA7191_FORCE_COLOUR_MIN,
625 .maximum = SAA7191_FORCE_COLOUR_MAX,
626 .step = 1,
627 .default_value = SAA7191_FORCE_COLOUR_DEFAULT,
628 }, {
629 .id = SAA7191_CONTROL_CHROMA_GAIN,
630 .type = V4L2_CTRL_TYPE_INTEGER,
631 .name = "Chrominance Gain Control",
632 .minimum = SAA7191_CHROMA_GAIN_MIN,
633 .maximum = SAA7191_CHROMA_GAIN_MAX,
634 .step = 1,
635 .default_value = SAA7191_CHROMA_GAIN_DEFAULT,
636 }, {
637 .id = SAA7191_CONTROL_VTRC,
638 .type = V4L2_CTRL_TYPE_BOOLEAN,
639 .name = "VTR Time Constant",
640 .minimum = SAA7191_VTRC_MIN,
641 .maximum = SAA7191_VTRC_MAX,
642 .step = 1,
643 .default_value = SAA7191_VTRC_DEFAULT,
644 }, {
645 .id = SAA7191_CONTROL_LUMA_DELAY,
646 .type = V4L2_CTRL_TYPE_INTEGER,
647 .name = "Luminance Delay Compensation",
648 .minimum = SAA7191_LUMA_DELAY_MIN,
649 .maximum = SAA7191_LUMA_DELAY_MAX,
650 .step = 1,
651 .default_value = SAA7191_LUMA_DELAY_DEFAULT,
652 }, {
653 .id = SAA7191_CONTROL_VNR,
654 .type = V4L2_CTRL_TYPE_INTEGER,
655 .name = "Vertical Noise Reduction",
656 .minimum = SAA7191_VNR_MIN,
657 .maximum = SAA7191_VNR_MAX,
658 .step = 1,
659 .default_value = SAA7191_VNR_DEFAULT,
660 }
661 };
662
663 /* VINO framebuffer/DMA descriptor management */
664
665 static void vino_free_buffer_with_count(struct vino_framebuffer *fb,
666 unsigned int count)
667 {
668 unsigned int i;
669
670 dprintk("vino_free_buffer_with_count(): count = %d\n", count);
671
672 for (i = 0; i < count; i++) {
673 ClearPageReserved(virt_to_page((void *)fb->desc_table.virtual[i]));
674 dma_unmap_single(NULL,
675 fb->desc_table.dma_cpu[VINO_PAGE_RATIO * i],
676 PAGE_SIZE, DMA_FROM_DEVICE);
677 free_page(fb->desc_table.virtual[i]);
678 }
679
680 dma_free_coherent(NULL,
681 VINO_PAGE_RATIO * (fb->desc_table.page_count + 4) *
682 sizeof(dma_addr_t), (void *)fb->desc_table.dma_cpu,
683 fb->desc_table.dma);
684 kfree(fb->desc_table.virtual);
685
686 memset(fb, 0, sizeof(struct vino_framebuffer));
687 }
688
689 static void vino_free_buffer(struct vino_framebuffer *fb)
690 {
691 vino_free_buffer_with_count(fb, fb->desc_table.page_count);
692 }
693
694 static int vino_allocate_buffer(struct vino_framebuffer *fb,
695 unsigned int size)
696 {
697 unsigned int count, i, j;
698 int ret = 0;
699
700 dprintk("vino_allocate_buffer():\n");
701
702 if (size < 1)
703 return -EINVAL;
704
705 memset(fb, 0, sizeof(struct vino_framebuffer));
706
707 count = ((size / PAGE_SIZE) + 4) & ~3;
708
709 dprintk("vino_allocate_buffer(): size = %d, count = %d\n",
710 size, count);
711
712 /* allocate memory for table with virtual (page) addresses */
713 fb->desc_table.virtual = (unsigned long *)
714 kmalloc(count * sizeof(unsigned long), GFP_KERNEL);
715 if (!fb->desc_table.virtual)
716 return -ENOMEM;
717
718 /* allocate memory for table with dma addresses
719 * (has space for four extra descriptors) */
720 fb->desc_table.dma_cpu =
721 dma_alloc_coherent(NULL, VINO_PAGE_RATIO * (count + 4) *
722 sizeof(dma_addr_t), &fb->desc_table.dma,
723 GFP_KERNEL | GFP_DMA);
724 if (!fb->desc_table.dma_cpu) {
725 ret = -ENOMEM;
726 goto out_free_virtual;
727 }
728
729 /* allocate pages for the buffer and acquire the according
730 * dma addresses */
731 for (i = 0; i < count; i++) {
732 dma_addr_t dma_data_addr;
733
734 fb->desc_table.virtual[i] =
735 get_zeroed_page(GFP_KERNEL | GFP_DMA);
736 if (!fb->desc_table.virtual[i]) {
737 ret = -ENOBUFS;
738 break;
739 }
740
741 dma_data_addr =
742 dma_map_single(NULL,
743 (void *)fb->desc_table.virtual[i],
744 PAGE_SIZE, DMA_FROM_DEVICE);
745
746 for (j = 0; j < VINO_PAGE_RATIO; j++) {
747 fb->desc_table.dma_cpu[VINO_PAGE_RATIO * i + j] =
748 dma_data_addr + VINO_PAGE_SIZE * j;
749 }
750
751 SetPageReserved(virt_to_page((void *)fb->desc_table.virtual[i]));
752 }
753
754 /* page_count needs to be set anyway, because the descriptor table has
755 * been allocated according to this number */
756 fb->desc_table.page_count = count;
757
758 if (ret) {
759 /* the descriptor with index i doesn't contain
760 * a valid address yet */
761 vino_free_buffer_with_count(fb, i);
762 return ret;
763 }
764
765 //fb->size = size;
766 fb->size = count * PAGE_SIZE;
767 fb->data_format = VINO_DATA_FMT_NONE;
768
769 /* set the dma stop-bit for the last (count+1)th descriptor */
770 fb->desc_table.dma_cpu[VINO_PAGE_RATIO * count] = VINO_DESC_STOP;
771 return 0;
772
773 out_free_virtual:
774 kfree(fb->desc_table.virtual);
775 return ret;
776 }
777
778 #if 0
779 /* user buffers not fully implemented yet */
780 static int vino_prepare_user_buffer(struct vino_framebuffer *fb,
781 void *user,
782 unsigned int size)
783 {
784 unsigned int count, i, j;
785 int ret = 0;
786
787 dprintk("vino_prepare_user_buffer():\n");
788
789 if (size < 1)
790 return -EINVAL;
791
792 memset(fb, 0, sizeof(struct vino_framebuffer));
793
794 count = ((size / PAGE_SIZE)) & ~3;
795
796 dprintk("vino_prepare_user_buffer(): size = %d, count = %d\n",
797 size, count);
798
799 /* allocate memory for table with virtual (page) addresses */
800 fb->desc_table.virtual = (unsigned long *)
801 kmalloc(count * sizeof(unsigned long), GFP_KERNEL);
802 if (!fb->desc_table.virtual)
803 return -ENOMEM;
804
805 /* allocate memory for table with dma addresses
806 * (has space for four extra descriptors) */
807 fb->desc_table.dma_cpu =
808 dma_alloc_coherent(NULL, VINO_PAGE_RATIO * (count + 4) *
809 sizeof(dma_addr_t), &fb->desc_table.dma,
810 GFP_KERNEL | GFP_DMA);
811 if (!fb->desc_table.dma_cpu) {
812 ret = -ENOMEM;
813 goto out_free_virtual;
814 }
815
816 /* allocate pages for the buffer and acquire the according
817 * dma addresses */
818 for (i = 0; i < count; i++) {
819 dma_addr_t dma_data_addr;
820
821 fb->desc_table.virtual[i] =
822 get_zeroed_page(GFP_KERNEL | GFP_DMA);
823 if (!fb->desc_table.virtual[i]) {
824 ret = -ENOBUFS;
825 break;
826 }
827
828 dma_data_addr =
829 dma_map_single(NULL,
830 (void *)fb->desc_table.virtual[i],
831 PAGE_SIZE, DMA_FROM_DEVICE);
832
833 for (j = 0; j < VINO_PAGE_RATIO; j++) {
834 fb->desc_table.dma_cpu[VINO_PAGE_RATIO * i + j] =
835 dma_data_addr + VINO_PAGE_SIZE * j;
836 }
837
838 SetPageReserved(virt_to_page((void *)fb->desc_table.virtual[i]));
839 }
840
841 /* page_count needs to be set anyway, because the descriptor table has
842 * been allocated according to this number */
843 fb->desc_table.page_count = count;
844
845 if (ret) {
846 /* the descriptor with index i doesn't contain
847 * a valid address yet */
848 vino_free_buffer_with_count(fb, i);
849 return ret;
850 }
851
852 //fb->size = size;
853 fb->size = count * PAGE_SIZE;
854
855 /* set the dma stop-bit for the last (count+1)th descriptor */
856 fb->desc_table.dma_cpu[VINO_PAGE_RATIO * count] = VINO_DESC_STOP;
857 return 0;
858
859 out_free_virtual:
860 kfree(fb->desc_table.virtual);
861 return ret;
862 }
863 #endif
864
865 static void vino_sync_buffer(struct vino_framebuffer *fb)
866 {
867 int i;
868
869 dprintk("vino_sync_buffer():\n");
870
871 for (i = 0; i < fb->desc_table.page_count; i++)
872 dma_sync_single_for_cpu(NULL,
873 fb->desc_table.dma_cpu[VINO_PAGE_RATIO * i],
874 PAGE_SIZE, DMA_FROM_DEVICE);
875 }
876
877 /* Framebuffer fifo functions (need to be locked externally) */
878
879 static inline void vino_fifo_init(struct vino_framebuffer_fifo *f,
880 unsigned int length)
881 {
882 f->length = 0;
883 f->used = 0;
884 f->head = 0;
885 f->tail = 0;
886
887 if (length > VINO_FRAMEBUFFER_COUNT_MAX)
888 length = VINO_FRAMEBUFFER_COUNT_MAX;
889
890 f->length = length;
891 }
892
893 /* returns true/false */
894 static inline int vino_fifo_has_id(struct vino_framebuffer_fifo *f,
895 unsigned int id)
896 {
897 unsigned int i;
898
899 for (i = f->head; i == (f->tail - 1); i = (i + 1) % f->length) {
900 if (f->data[i] == id)
901 return 1;
902 }
903
904 return 0;
905 }
906
907 #if 0
908 /* returns true/false */
909 static inline int vino_fifo_full(struct vino_framebuffer_fifo *f)
910 {
911 return (f->used == f->length);
912 }
913 #endif
914
915 static inline unsigned int vino_fifo_get_used(struct vino_framebuffer_fifo *f)
916 {
917 return f->used;
918 }
919
920 static int vino_fifo_enqueue(struct vino_framebuffer_fifo *f, unsigned int id)
921 {
922 if (id >= f->length) {
923 return VINO_QUEUE_ERROR;
924 }
925
926 if (vino_fifo_has_id(f, id)) {
927 return VINO_QUEUE_ERROR;
928 }
929
930 if (f->used < f->length) {
931 f->data[f->tail] = id;
932 f->tail = (f->tail + 1) % f->length;
933 f->used++;
934 } else {
935 return VINO_QUEUE_ERROR;
936 }
937
938 return 0;
939 }
940
941 static int vino_fifo_peek(struct vino_framebuffer_fifo *f, unsigned int *id)
942 {
943 if (f->used > 0) {
944 *id = f->data[f->head];
945 } else {
946 return VINO_QUEUE_ERROR;
947 }
948
949 return 0;
950 }
951
952 static int vino_fifo_dequeue(struct vino_framebuffer_fifo *f, unsigned int *id)
953 {
954 if (f->used > 0) {
955 *id = f->data[f->head];
956 f->head = (f->head + 1) % f->length;
957 f->used--;
958 } else {
959 return VINO_QUEUE_ERROR;
960 }
961
962 return 0;
963 }
964
965 /* Framebuffer queue functions */
966
967 /* execute with queue_lock locked */
968 static void vino_queue_free_with_count(struct vino_framebuffer_queue *q,
969 unsigned int length)
970 {
971 unsigned int i;
972
973 q->length = 0;
974 memset(&q->in, 0, sizeof(struct vino_framebuffer_fifo));
975 memset(&q->out, 0, sizeof(struct vino_framebuffer_fifo));
976 for (i = 0; i < length; i++) {
977 dprintk("vino_queue_free_with_count(): freeing buffer %d\n",
978 i);
979 vino_free_buffer(q->buffer[i]);
980 kfree(q->buffer[i]);
981 }
982
983 q->type = VINO_MEMORY_NONE;
984 q->magic = 0;
985 }
986
987 static void vino_queue_free(struct vino_framebuffer_queue *q)
988 {
989 dprintk("vino_queue_free():\n");
990
991 if (q->magic != VINO_QUEUE_MAGIC)
992 return;
993 if (q->type != VINO_MEMORY_MMAP)
994 return;
995
996 mutex_lock(&q->queue_mutex);
997
998 vino_queue_free_with_count(q, q->length);
999
1000 mutex_unlock(&q->queue_mutex);
1001 }
1002
1003 static int vino_queue_init(struct vino_framebuffer_queue *q,
1004 unsigned int *length)
1005 {
1006 unsigned int i;
1007 int ret = 0;
1008
1009 dprintk("vino_queue_init(): length = %d\n", *length);
1010
1011 if (q->magic == VINO_QUEUE_MAGIC) {
1012 dprintk("vino_queue_init(): queue already initialized!\n");
1013 return -EINVAL;
1014 }
1015
1016 if (q->type != VINO_MEMORY_NONE) {
1017 dprintk("vino_queue_init(): queue already initialized!\n");
1018 return -EINVAL;
1019 }
1020
1021 if (*length < 1)
1022 return -EINVAL;
1023
1024 mutex_lock(&q->queue_mutex);
1025
1026 if (*length > VINO_FRAMEBUFFER_COUNT_MAX)
1027 *length = VINO_FRAMEBUFFER_COUNT_MAX;
1028
1029 q->length = 0;
1030
1031 for (i = 0; i < *length; i++) {
1032 dprintk("vino_queue_init(): allocating buffer %d\n", i);
1033 q->buffer[i] = kmalloc(sizeof(struct vino_framebuffer),
1034 GFP_KERNEL);
1035 if (!q->buffer[i]) {
1036 dprintk("vino_queue_init(): kmalloc() failed\n");
1037 ret = -ENOMEM;
1038 break;
1039 }
1040
1041 ret = vino_allocate_buffer(q->buffer[i],
1042 VINO_FRAMEBUFFER_SIZE);
1043 if (ret) {
1044 kfree(q->buffer[i]);
1045 dprintk("vino_queue_init(): "
1046 "vino_allocate_buffer() failed\n");
1047 break;
1048 }
1049
1050 q->buffer[i]->id = i;
1051 if (i > 0) {
1052 q->buffer[i]->offset = q->buffer[i - 1]->offset +
1053 q->buffer[i - 1]->size;
1054 } else {
1055 q->buffer[i]->offset = 0;
1056 }
1057
1058 spin_lock_init(&q->buffer[i]->state_lock);
1059
1060 dprintk("vino_queue_init(): buffer = %d, offset = %d, "
1061 "size = %d\n", i, q->buffer[i]->offset,
1062 q->buffer[i]->size);
1063 }
1064
1065 if (ret) {
1066 vino_queue_free_with_count(q, i);
1067 *length = 0;
1068 } else {
1069 q->length = *length;
1070 vino_fifo_init(&q->in, q->length);
1071 vino_fifo_init(&q->out, q->length);
1072 q->type = VINO_MEMORY_MMAP;
1073 q->magic = VINO_QUEUE_MAGIC;
1074 }
1075
1076 mutex_unlock(&q->queue_mutex);
1077
1078 return ret;
1079 }
1080
1081 static struct vino_framebuffer *vino_queue_add(struct
1082 vino_framebuffer_queue *q,
1083 unsigned int id)
1084 {
1085 struct vino_framebuffer *ret = NULL;
1086 unsigned int total;
1087 unsigned long flags;
1088
1089 dprintk("vino_queue_add(): id = %d\n", id);
1090
1091 if (q->magic != VINO_QUEUE_MAGIC) {
1092 return ret;
1093 }
1094
1095 spin_lock_irqsave(&q->queue_lock, flags);
1096
1097 if (q->length == 0)
1098 goto out;
1099
1100 if (id >= q->length)
1101 goto out;
1102
1103 /* not needed?: if (vino_fifo_full(&q->out)) {
1104 goto out;
1105 }*/
1106 /* check that outgoing queue isn't already full
1107 * (or that it won't become full) */
1108 total = vino_fifo_get_used(&q->in) +
1109 vino_fifo_get_used(&q->out);
1110 if (total >= q->length)
1111 goto out;
1112
1113 if (vino_fifo_enqueue(&q->in, id))
1114 goto out;
1115
1116 ret = q->buffer[id];
1117
1118 out:
1119 spin_unlock_irqrestore(&q->queue_lock, flags);
1120
1121 return ret;
1122 }
1123
1124 static struct vino_framebuffer *vino_queue_transfer(struct
1125 vino_framebuffer_queue *q)
1126 {
1127 struct vino_framebuffer *ret = NULL;
1128 struct vino_framebuffer *fb;
1129 int id;
1130 unsigned long flags;
1131
1132 dprintk("vino_queue_transfer():\n");
1133
1134 if (q->magic != VINO_QUEUE_MAGIC) {
1135 return ret;
1136 }
1137
1138 spin_lock_irqsave(&q->queue_lock, flags);
1139
1140 if (q->length == 0)
1141 goto out;
1142
1143 // now this actually removes an entry from the incoming queue
1144 if (vino_fifo_dequeue(&q->in, &id)) {
1145 goto out;
1146 }
1147
1148 dprintk("vino_queue_transfer(): id = %d\n", id);
1149 fb = q->buffer[id];
1150
1151 // we have already checked that the outgoing queue is not full, but...
1152 if (vino_fifo_enqueue(&q->out, id)) {
1153 printk(KERN_ERR "vino_queue_transfer(): "
1154 "outgoing queue is full, this shouldn't happen!\n");
1155 goto out;
1156 }
1157
1158 ret = fb;
1159 out:
1160 spin_unlock_irqrestore(&q->queue_lock, flags);
1161
1162 return ret;
1163 }
1164
1165 /* returns true/false */
1166 static int vino_queue_incoming_contains(struct vino_framebuffer_queue *q,
1167 unsigned int id)
1168 {
1169 int ret = 0;
1170 unsigned long flags;
1171
1172 if (q->magic != VINO_QUEUE_MAGIC) {
1173 return ret;
1174 }
1175
1176 spin_lock_irqsave(&q->queue_lock, flags);
1177
1178 if (q->length == 0)
1179 goto out;
1180
1181 ret = vino_fifo_has_id(&q->in, id);
1182
1183 out:
1184 spin_unlock_irqrestore(&q->queue_lock, flags);
1185
1186 return ret;
1187 }
1188
1189 /* returns true/false */
1190 static int vino_queue_outgoing_contains(struct vino_framebuffer_queue *q,
1191 unsigned int id)
1192 {
1193 int ret = 0;
1194 unsigned long flags;
1195
1196 if (q->magic != VINO_QUEUE_MAGIC) {
1197 return ret;
1198 }
1199
1200 spin_lock_irqsave(&q->queue_lock, flags);
1201
1202 if (q->length == 0)
1203 goto out;
1204
1205 ret = vino_fifo_has_id(&q->out, id);
1206
1207 out:
1208 spin_unlock_irqrestore(&q->queue_lock, flags);
1209
1210 return ret;
1211 }
1212
1213 static int vino_queue_get_incoming(struct vino_framebuffer_queue *q,
1214 unsigned int *used)
1215 {
1216 int ret = 0;
1217 unsigned long flags;
1218
1219 if (q->magic != VINO_QUEUE_MAGIC) {
1220 return VINO_QUEUE_ERROR;
1221 }
1222
1223 spin_lock_irqsave(&q->queue_lock, flags);
1224
1225 if (q->length == 0) {
1226 ret = VINO_QUEUE_ERROR;
1227 goto out;
1228 }
1229
1230 *used = vino_fifo_get_used(&q->in);
1231
1232 out:
1233 spin_unlock_irqrestore(&q->queue_lock, flags);
1234
1235 return ret;
1236 }
1237
1238 static int vino_queue_get_outgoing(struct vino_framebuffer_queue *q,
1239 unsigned int *used)
1240 {
1241 int ret = 0;
1242 unsigned long flags;
1243
1244 if (q->magic != VINO_QUEUE_MAGIC) {
1245 return VINO_QUEUE_ERROR;
1246 }
1247
1248 spin_lock_irqsave(&q->queue_lock, flags);
1249
1250 if (q->length == 0) {
1251 ret = VINO_QUEUE_ERROR;
1252 goto out;
1253 }
1254
1255 *used = vino_fifo_get_used(&q->out);
1256
1257 out:
1258 spin_unlock_irqrestore(&q->queue_lock, flags);
1259
1260 return ret;
1261 }
1262
1263 #if 0
1264 static int vino_queue_get_total(struct vino_framebuffer_queue *q,
1265 unsigned int *total)
1266 {
1267 int ret = 0;
1268 unsigned long flags;
1269
1270 if (q->magic != VINO_QUEUE_MAGIC) {
1271 return VINO_QUEUE_ERROR;
1272 }
1273
1274 spin_lock_irqsave(&q->queue_lock, flags);
1275
1276 if (q->length == 0) {
1277 ret = VINO_QUEUE_ERROR;
1278 goto out;
1279 }
1280
1281 *total = vino_fifo_get_used(&q->in) +
1282 vino_fifo_get_used(&q->out);
1283
1284 out:
1285 spin_unlock_irqrestore(&q->queue_lock, flags);
1286
1287 return ret;
1288 }
1289 #endif
1290
1291 static struct vino_framebuffer *vino_queue_peek(struct
1292 vino_framebuffer_queue *q,
1293 unsigned int *id)
1294 {
1295 struct vino_framebuffer *ret = NULL;
1296 unsigned long flags;
1297
1298 if (q->magic != VINO_QUEUE_MAGIC) {
1299 return ret;
1300 }
1301
1302 spin_lock_irqsave(&q->queue_lock, flags);
1303
1304 if (q->length == 0)
1305 goto out;
1306
1307 if (vino_fifo_peek(&q->in, id)) {
1308 goto out;
1309 }
1310
1311 ret = q->buffer[*id];
1312 out:
1313 spin_unlock_irqrestore(&q->queue_lock, flags);
1314
1315 return ret;
1316 }
1317
1318 static struct vino_framebuffer *vino_queue_remove(struct
1319 vino_framebuffer_queue *q,
1320 unsigned int *id)
1321 {
1322 struct vino_framebuffer *ret = NULL;
1323 unsigned long flags;
1324 dprintk("vino_queue_remove():\n");
1325
1326 if (q->magic != VINO_QUEUE_MAGIC) {
1327 return ret;
1328 }
1329
1330 spin_lock_irqsave(&q->queue_lock, flags);
1331
1332 if (q->length == 0)
1333 goto out;
1334
1335 if (vino_fifo_dequeue(&q->out, id)) {
1336 goto out;
1337 }
1338
1339 dprintk("vino_queue_remove(): id = %d\n", *id);
1340 ret = q->buffer[*id];
1341 out:
1342 spin_unlock_irqrestore(&q->queue_lock, flags);
1343
1344 return ret;
1345 }
1346
1347 static struct
1348 vino_framebuffer *vino_queue_get_buffer(struct vino_framebuffer_queue *q,
1349 unsigned int id)
1350 {
1351 struct vino_framebuffer *ret = NULL;
1352 unsigned long flags;
1353
1354 if (q->magic != VINO_QUEUE_MAGIC) {
1355 return ret;
1356 }
1357
1358 spin_lock_irqsave(&q->queue_lock, flags);
1359
1360 if (q->length == 0)
1361 goto out;
1362
1363 if (id >= q->length)
1364 goto out;
1365
1366 ret = q->buffer[id];
1367 out:
1368 spin_unlock_irqrestore(&q->queue_lock, flags);
1369
1370 return ret;
1371 }
1372
1373 static unsigned int vino_queue_get_length(struct vino_framebuffer_queue *q)
1374 {
1375 unsigned int length = 0;
1376 unsigned long flags;
1377
1378 if (q->magic != VINO_QUEUE_MAGIC) {
1379 return length;
1380 }
1381
1382 spin_lock_irqsave(&q->queue_lock, flags);
1383 length = q->length;
1384 spin_unlock_irqrestore(&q->queue_lock, flags);
1385
1386 return length;
1387 }
1388
1389 static int vino_queue_has_mapped_buffers(struct vino_framebuffer_queue *q)
1390 {
1391 unsigned int i;
1392 int ret = 0;
1393 unsigned long flags;
1394
1395 if (q->magic != VINO_QUEUE_MAGIC) {
1396 return ret;
1397 }
1398
1399 spin_lock_irqsave(&q->queue_lock, flags);
1400 for (i = 0; i < q->length; i++) {
1401 if (q->buffer[i]->map_count > 0) {
1402 ret = 1;
1403 break;
1404 }
1405 }
1406 spin_unlock_irqrestore(&q->queue_lock, flags);
1407
1408 return ret;
1409 }
1410
1411 /* VINO functions */
1412
1413 /* execute with input_lock locked */
1414 static void vino_update_line_size(struct vino_channel_settings *vcs)
1415 {
1416 unsigned int w = vcs->clipping.right - vcs->clipping.left;
1417 unsigned int d = vcs->decimation;
1418 unsigned int bpp = vino_data_formats[vcs->data_format].bpp;
1419 unsigned int lsize;
1420
1421 dprintk("update_line_size(): before: w = %d, d = %d, "
1422 "line_size = %d\n", w, d, vcs->line_size);
1423
1424 /* line size must be multiple of 8 bytes */
1425 lsize = (bpp * (w / d)) & ~7;
1426 w = (lsize / bpp) * d;
1427
1428 vcs->clipping.right = vcs->clipping.left + w;
1429 vcs->line_size = lsize;
1430
1431 dprintk("update_line_size(): after: w = %d, d = %d, "
1432 "line_size = %d\n", w, d, vcs->line_size);
1433 }
1434
1435 /* execute with input_lock locked */
1436 static void vino_set_clipping(struct vino_channel_settings *vcs,
1437 unsigned int x, unsigned int y,
1438 unsigned int w, unsigned int h)
1439 {
1440 unsigned int maxwidth, maxheight;
1441 unsigned int d;
1442
1443 maxwidth = vino_data_norms[vcs->data_norm].width;
1444 maxheight = vino_data_norms[vcs->data_norm].height;
1445 d = vcs->decimation;
1446
1447 y &= ~1; /* odd/even fields */
1448
1449 if (x > maxwidth) {
1450 x = 0;
1451 }
1452 if (y > maxheight) {
1453 y = 0;
1454 }
1455
1456 if (((w / d) < VINO_MIN_WIDTH)
1457 || ((h / d) < VINO_MIN_HEIGHT)) {
1458 w = VINO_MIN_WIDTH * d;
1459 h = VINO_MIN_HEIGHT * d;
1460 }
1461
1462 if ((x + w) > maxwidth) {
1463 w = maxwidth - x;
1464 if ((w / d) < VINO_MIN_WIDTH)
1465 x = maxwidth - VINO_MIN_WIDTH * d;
1466 }
1467 if ((y + h) > maxheight) {
1468 h = maxheight - y;
1469 if ((h / d) < VINO_MIN_HEIGHT)
1470 y = maxheight - VINO_MIN_HEIGHT * d;
1471 }
1472
1473 vcs->clipping.left = x;
1474 vcs->clipping.top = y;
1475 vcs->clipping.right = x + w;
1476 vcs->clipping.bottom = y + h;
1477
1478 vino_update_line_size(vcs);
1479
1480 dprintk("clipping %d, %d, %d, %d / %d - %d\n",
1481 vcs->clipping.left, vcs->clipping.top, vcs->clipping.right,
1482 vcs->clipping.bottom, vcs->decimation, vcs->line_size);
1483 }
1484
1485 /* execute with input_lock locked */
1486 static inline void vino_set_default_clipping(struct vino_channel_settings *vcs)
1487 {
1488 vino_set_clipping(vcs, 0, 0, vino_data_norms[vcs->data_norm].width,
1489 vino_data_norms[vcs->data_norm].height);
1490 }
1491
1492 /* execute with input_lock locked */
1493 static void vino_set_scaling(struct vino_channel_settings *vcs,
1494 unsigned int w, unsigned int h)
1495 {
1496 unsigned int x, y, curw, curh, d;
1497
1498 x = vcs->clipping.left;
1499 y = vcs->clipping.top;
1500 curw = vcs->clipping.right - vcs->clipping.left;
1501 curh = vcs->clipping.bottom - vcs->clipping.top;
1502
1503 d = max(curw / w, curh / h);
1504
1505 dprintk("scaling w: %d, h: %d, curw: %d, curh: %d, d: %d\n",
1506 w, h, curw, curh, d);
1507
1508 if (d < 1) {
1509 d = 1;
1510 } else if (d > 8) {
1511 d = 8;
1512 }
1513
1514 vcs->decimation = d;
1515 vino_set_clipping(vcs, x, y, w * d, h * d);
1516
1517 dprintk("scaling %d, %d, %d, %d / %d - %d\n", vcs->clipping.left,
1518 vcs->clipping.top, vcs->clipping.right, vcs->clipping.bottom,
1519 vcs->decimation, vcs->line_size);
1520 }
1521
1522 /* execute with input_lock locked */
1523 static inline void vino_set_default_scaling(struct vino_channel_settings *vcs)
1524 {
1525 vino_set_scaling(vcs, vcs->clipping.right - vcs->clipping.left,
1526 vcs->clipping.bottom - vcs->clipping.top);
1527 }
1528
1529 /* execute with input_lock locked */
1530 static void vino_set_framerate(struct vino_channel_settings *vcs,
1531 unsigned int fps)
1532 {
1533 unsigned int mask;
1534
1535 switch (vcs->data_norm) {
1536 case VINO_DATA_NORM_NTSC:
1537 case VINO_DATA_NORM_D1:
1538 fps = (unsigned int)(fps / 6) * 6; // FIXME: round!
1539
1540 if (fps < vino_data_norms[vcs->data_norm].fps_min)
1541 fps = vino_data_norms[vcs->data_norm].fps_min;
1542 if (fps > vino_data_norms[vcs->data_norm].fps_max)
1543 fps = vino_data_norms[vcs->data_norm].fps_max;
1544
1545 switch (fps) {
1546 case 6:
1547 mask = 0x003;
1548 break;
1549 case 12:
1550 mask = 0x0c3;
1551 break;
1552 case 18:
1553 mask = 0x333;
1554 break;
1555 case 24:
1556 mask = 0x3ff;
1557 break;
1558 case 30:
1559 mask = 0xfff;
1560 break;
1561 default:
1562 mask = VINO_FRAMERT_FULL;
1563 }
1564 vcs->framert_reg = VINO_FRAMERT_RT(mask);
1565 break;
1566 case VINO_DATA_NORM_PAL:
1567 case VINO_DATA_NORM_SECAM:
1568 fps = (unsigned int)(fps / 5) * 5; // FIXME: round!
1569
1570 if (fps < vino_data_norms[vcs->data_norm].fps_min)
1571 fps = vino_data_norms[vcs->data_norm].fps_min;
1572 if (fps > vino_data_norms[vcs->data_norm].fps_max)
1573 fps = vino_data_norms[vcs->data_norm].fps_max;
1574
1575 switch (fps) {
1576 case 5:
1577 mask = 0x003;
1578 break;
1579 case 10:
1580 mask = 0x0c3;
1581 break;
1582 case 15:
1583 mask = 0x333;
1584 break;
1585 case 20:
1586 mask = 0x0ff;
1587 break;
1588 case 25:
1589 mask = 0x3ff;
1590 break;
1591 default:
1592 mask = VINO_FRAMERT_FULL;
1593 }
1594 vcs->framert_reg = VINO_FRAMERT_RT(mask) | VINO_FRAMERT_PAL;
1595 break;
1596 }
1597
1598 vcs->fps = fps;
1599 }
1600
1601 /* execute with input_lock locked */
1602 static inline void vino_set_default_framerate(struct
1603 vino_channel_settings *vcs)
1604 {
1605 vino_set_framerate(vcs, vino_data_norms[vcs->data_norm].fps_max);
1606 }
1607
1608 /* VINO I2C bus functions */
1609
1610 struct i2c_algo_sgi_data {
1611 void *data; /* private data for lowlevel routines */
1612 unsigned (*getctrl)(void *data);
1613 void (*setctrl)(void *data, unsigned val);
1614 unsigned (*rdata)(void *data);
1615 void (*wdata)(void *data, unsigned val);
1616
1617 int xfer_timeout;
1618 int ack_timeout;
1619 };
1620
1621 static int wait_xfer_done(struct i2c_algo_sgi_data *adap)
1622 {
1623 int i;
1624
1625 for (i = 0; i < adap->xfer_timeout; i++) {
1626 if ((adap->getctrl(adap->data) & SGI_I2C_XFER_BUSY) == 0)
1627 return 0;
1628 udelay(1);
1629 }
1630
1631 return -ETIMEDOUT;
1632 }
1633
1634 static int wait_ack(struct i2c_algo_sgi_data *adap)
1635 {
1636 int i;
1637
1638 if (wait_xfer_done(adap))
1639 return -ETIMEDOUT;
1640 for (i = 0; i < adap->ack_timeout; i++) {
1641 if ((adap->getctrl(adap->data) & SGI_I2C_NACK) == 0)
1642 return 0;
1643 udelay(1);
1644 }
1645
1646 return -ETIMEDOUT;
1647 }
1648
1649 static int force_idle(struct i2c_algo_sgi_data *adap)
1650 {
1651 int i;
1652
1653 adap->setctrl(adap->data, SGI_I2C_FORCE_IDLE);
1654 for (i = 0; i < adap->xfer_timeout; i++) {
1655 if ((adap->getctrl(adap->data) & SGI_I2C_NOT_IDLE) == 0)
1656 goto out;
1657 udelay(1);
1658 }
1659 return -ETIMEDOUT;
1660 out:
1661 if (adap->getctrl(adap->data) & SGI_I2C_BUS_ERR)
1662 return -EIO;
1663 return 0;
1664 }
1665
1666 static int do_address(struct i2c_algo_sgi_data *adap, unsigned int addr,
1667 int rd)
1668 {
1669 if (rd)
1670 adap->setctrl(adap->data, SGI_I2C_NOT_IDLE);
1671 /* Check if bus is idle, eventually force it to do so */
1672 if (adap->getctrl(adap->data) & SGI_I2C_NOT_IDLE)
1673 if (force_idle(adap))
1674 return -EIO;
1675 /* Write out the i2c chip address and specify operation */
1676 adap->setctrl(adap->data,
1677 SGI_I2C_HOLD_BUS | SGI_I2C_WRITE | SGI_I2C_NOT_IDLE);
1678 if (rd)
1679 addr |= 1;
1680 adap->wdata(adap->data, addr);
1681 if (wait_ack(adap))
1682 return -EIO;
1683 return 0;
1684 }
1685
1686 static int i2c_read(struct i2c_algo_sgi_data *adap, unsigned char *buf,
1687 unsigned int len)
1688 {
1689 int i;
1690
1691 adap->setctrl(adap->data,
1692 SGI_I2C_HOLD_BUS | SGI_I2C_READ | SGI_I2C_NOT_IDLE);
1693 for (i = 0; i < len; i++) {
1694 if (wait_xfer_done(adap))
1695 return -EIO;
1696 buf[i] = adap->rdata(adap->data);
1697 }
1698 adap->setctrl(adap->data, SGI_I2C_RELEASE_BUS | SGI_I2C_FORCE_IDLE);
1699
1700 return 0;
1701
1702 }
1703
1704 static int i2c_write(struct i2c_algo_sgi_data *adap, unsigned char *buf,
1705 unsigned int len)
1706 {
1707 int i;
1708
1709 /* We are already in write state */
1710 for (i = 0; i < len; i++) {
1711 adap->wdata(adap->data, buf[i]);
1712 if (wait_ack(adap))
1713 return -EIO;
1714 }
1715 return 0;
1716 }
1717
1718 static int sgi_xfer(struct i2c_adapter *i2c_adap, struct i2c_msg *msgs,
1719 int num)
1720 {
1721 struct i2c_algo_sgi_data *adap = i2c_adap->algo_data;
1722 struct i2c_msg *p;
1723 int i, err = 0;
1724
1725 for (i = 0; !err && i < num; i++) {
1726 p = &msgs[i];
1727 err = do_address(adap, p->addr, p->flags & I2C_M_RD);
1728 if (err || !p->len)
1729 continue;
1730 if (p->flags & I2C_M_RD)
1731 err = i2c_read(adap, p->buf, p->len);
1732 else
1733 err = i2c_write(adap, p->buf, p->len);
1734 }
1735
1736 return (err < 0) ? err : i;
1737 }
1738
1739 static u32 sgi_func(struct i2c_adapter *adap)
1740 {
1741 return I2C_FUNC_SMBUS_EMUL;
1742 }
1743
1744 static const struct i2c_algorithm sgi_algo = {
1745 .master_xfer = sgi_xfer,
1746 .functionality = sgi_func,
1747 };
1748
1749 static unsigned i2c_vino_getctrl(void *data)
1750 {
1751 return vino->i2c_control;
1752 }
1753
1754 static void i2c_vino_setctrl(void *data, unsigned val)
1755 {
1756 vino->i2c_control = val;
1757 }
1758
1759 static unsigned i2c_vino_rdata(void *data)
1760 {
1761 return vino->i2c_data;
1762 }
1763
1764 static void i2c_vino_wdata(void *data, unsigned val)
1765 {
1766 vino->i2c_data = val;
1767 }
1768
1769 static struct i2c_algo_sgi_data i2c_sgi_vino_data = {
1770 .getctrl = &i2c_vino_getctrl,
1771 .setctrl = &i2c_vino_setctrl,
1772 .rdata = &i2c_vino_rdata,
1773 .wdata = &i2c_vino_wdata,
1774 .xfer_timeout = 200,
1775 .ack_timeout = 1000,
1776 };
1777
1778 static struct i2c_adapter vino_i2c_adapter = {
1779 .name = "VINO I2C bus",
1780 .algo = &sgi_algo,
1781 .algo_data = &i2c_sgi_vino_data,
1782 .owner = THIS_MODULE,
1783 };
1784
1785 /*
1786 * Prepare VINO for DMA transfer...
1787 * (execute only with vino_lock and input_lock locked)
1788 */
1789 static int vino_dma_setup(struct vino_channel_settings *vcs,
1790 struct vino_framebuffer *fb)
1791 {
1792 u32 ctrl, intr;
1793 struct sgi_vino_channel *ch;
1794 const struct vino_data_norm *norm;
1795
1796 dprintk("vino_dma_setup():\n");
1797
1798 vcs->field = 0;
1799 fb->frame_counter = 0;
1800
1801 ch = (vcs->channel == VINO_CHANNEL_A) ? &vino->a : &vino->b;
1802 norm = &vino_data_norms[vcs->data_norm];
1803
1804 ch->page_index = 0;
1805 ch->line_count = 0;
1806
1807 /* VINO line size register is set 8 bytes less than actual */
1808 ch->line_size = vcs->line_size - 8;
1809
1810 /* let VINO know where to transfer data */
1811 ch->start_desc_tbl = fb->desc_table.dma;
1812 ch->next_4_desc = fb->desc_table.dma;
1813
1814 /* give vino time to fetch the first four descriptors, 5 usec
1815 * should be more than enough time */
1816 udelay(VINO_DESC_FETCH_DELAY);
1817
1818 dprintk("vino_dma_setup(): start desc = %08x, next 4 desc = %08x\n",
1819 ch->start_desc_tbl, ch->next_4_desc);
1820
1821 /* set the alpha register */
1822 ch->alpha = vcs->alpha;
1823
1824 /* set clipping registers */
1825 ch->clip_start = VINO_CLIP_ODD(norm->odd.top + vcs->clipping.top / 2) |
1826 VINO_CLIP_EVEN(norm->even.top +
1827 vcs->clipping.top / 2) |
1828 VINO_CLIP_X(vcs->clipping.left);
1829 ch->clip_end = VINO_CLIP_ODD(norm->odd.top +
1830 vcs->clipping.bottom / 2 - 1) |
1831 VINO_CLIP_EVEN(norm->even.top +
1832 vcs->clipping.bottom / 2 - 1) |
1833 VINO_CLIP_X(vcs->clipping.right);
1834
1835 /* set the size of actual content in the buffer (DECIMATION !) */
1836 fb->data_size = ((vcs->clipping.right - vcs->clipping.left) /
1837 vcs->decimation) *
1838 ((vcs->clipping.bottom - vcs->clipping.top) /
1839 vcs->decimation) *
1840 vino_data_formats[vcs->data_format].bpp;
1841
1842 ch->frame_rate = vcs->framert_reg;
1843
1844 ctrl = vino->control;
1845 intr = vino->intr_status;
1846
1847 if (vcs->channel == VINO_CHANNEL_A) {
1848 /* All interrupt conditions for this channel was cleared
1849 * so clear the interrupt status register and enable
1850 * interrupts */
1851 intr &= ~VINO_INTSTAT_A;
1852 ctrl |= VINO_CTRL_A_INT;
1853
1854 /* enable synchronization */
1855 ctrl |= VINO_CTRL_A_SYNC_ENBL;
1856
1857 /* enable frame assembly */
1858 ctrl |= VINO_CTRL_A_INTERLEAVE_ENBL;
1859
1860 /* set decimation used */
1861 if (vcs->decimation < 2)
1862 ctrl &= ~VINO_CTRL_A_DEC_ENBL;
1863 else {
1864 ctrl |= VINO_CTRL_A_DEC_ENBL;
1865 ctrl &= ~VINO_CTRL_A_DEC_SCALE_MASK;
1866 ctrl |= (vcs->decimation - 1) <<
1867 VINO_CTRL_A_DEC_SCALE_SHIFT;
1868 }
1869
1870 /* select input interface */
1871 if (vcs->input == VINO_INPUT_D1)
1872 ctrl |= VINO_CTRL_A_SELECT;
1873 else
1874 ctrl &= ~VINO_CTRL_A_SELECT;
1875
1876 /* palette */
1877 ctrl &= ~(VINO_CTRL_A_LUMA_ONLY | VINO_CTRL_A_RGB |
1878 VINO_CTRL_A_DITHER);
1879 } else {
1880 intr &= ~VINO_INTSTAT_B;
1881 ctrl |= VINO_CTRL_B_INT;
1882
1883 ctrl |= VINO_CTRL_B_SYNC_ENBL;
1884 ctrl |= VINO_CTRL_B_INTERLEAVE_ENBL;
1885
1886 if (vcs->decimation < 2)
1887 ctrl &= ~VINO_CTRL_B_DEC_ENBL;
1888 else {
1889 ctrl |= VINO_CTRL_B_DEC_ENBL;
1890 ctrl &= ~VINO_CTRL_B_DEC_SCALE_MASK;
1891 ctrl |= (vcs->decimation - 1) <<
1892 VINO_CTRL_B_DEC_SCALE_SHIFT;
1893
1894 }
1895 if (vcs->input == VINO_INPUT_D1)
1896 ctrl |= VINO_CTRL_B_SELECT;
1897 else
1898 ctrl &= ~VINO_CTRL_B_SELECT;
1899
1900 ctrl &= ~(VINO_CTRL_B_LUMA_ONLY | VINO_CTRL_B_RGB |
1901 VINO_CTRL_B_DITHER);
1902 }
1903
1904 /* set palette */
1905 fb->data_format = vcs->data_format;
1906
1907 switch (vcs->data_format) {
1908 case VINO_DATA_FMT_GREY:
1909 ctrl |= (vcs->channel == VINO_CHANNEL_A) ?
1910 VINO_CTRL_A_LUMA_ONLY : VINO_CTRL_B_LUMA_ONLY;
1911 break;
1912 case VINO_DATA_FMT_RGB32:
1913 ctrl |= (vcs->channel == VINO_CHANNEL_A) ?
1914 VINO_CTRL_A_RGB : VINO_CTRL_B_RGB;
1915 break;
1916 case VINO_DATA_FMT_YUV:
1917 /* nothing needs to be done */
1918 break;
1919 case VINO_DATA_FMT_RGB332:
1920 ctrl |= (vcs->channel == VINO_CHANNEL_A) ?
1921 VINO_CTRL_A_RGB | VINO_CTRL_A_DITHER :
1922 VINO_CTRL_B_RGB | VINO_CTRL_B_DITHER;
1923 break;
1924 }
1925
1926 vino->intr_status = intr;
1927 vino->control = ctrl;
1928
1929 return 0;
1930 }
1931
1932 /* (execute only with vino_lock locked) */
1933 static inline void vino_dma_start(struct vino_channel_settings *vcs)
1934 {
1935 u32 ctrl = vino->control;
1936
1937 dprintk("vino_dma_start():\n");
1938 ctrl |= (vcs->channel == VINO_CHANNEL_A) ?
1939 VINO_CTRL_A_DMA_ENBL : VINO_CTRL_B_DMA_ENBL;
1940 vino->control = ctrl;
1941 }
1942
1943 /* (execute only with vino_lock locked) */
1944 static inline void vino_dma_stop(struct vino_channel_settings *vcs)
1945 {
1946 u32 ctrl = vino->control;
1947
1948 ctrl &= (vcs->channel == VINO_CHANNEL_A) ?
1949 ~VINO_CTRL_A_DMA_ENBL : ~VINO_CTRL_B_DMA_ENBL;
1950 ctrl &= (vcs->channel == VINO_CHANNEL_A) ?
1951 ~VINO_CTRL_A_INT : ~VINO_CTRL_B_INT;
1952 vino->control = ctrl;
1953 dprintk("vino_dma_stop():\n");
1954 }
1955
1956 /*
1957 * Load dummy page to descriptor registers. This prevents generating of
1958 * spurious interrupts. (execute only with vino_lock locked)
1959 */
1960 static void vino_clear_interrupt(struct vino_channel_settings *vcs)
1961 {
1962 struct sgi_vino_channel *ch;
1963
1964 ch = (vcs->channel == VINO_CHANNEL_A) ? &vino->a : &vino->b;
1965
1966 ch->page_index = 0;
1967 ch->line_count = 0;
1968
1969 ch->start_desc_tbl = vino_drvdata->dummy_desc_table.dma;
1970 ch->next_4_desc = vino_drvdata->dummy_desc_table.dma;
1971
1972 udelay(VINO_DESC_FETCH_DELAY);
1973 dprintk("channel %c clear interrupt condition\n",
1974 (vcs->channel == VINO_CHANNEL_A) ? 'A':'B');
1975 }
1976
1977 static int vino_capture(struct vino_channel_settings *vcs,
1978 struct vino_framebuffer *fb)
1979 {
1980 int err = 0;
1981 unsigned long flags, flags2;
1982
1983 spin_lock_irqsave(&fb->state_lock, flags);
1984
1985 if (fb->state == VINO_FRAMEBUFFER_IN_USE)
1986 err = -EBUSY;
1987 fb->state = VINO_FRAMEBUFFER_IN_USE;
1988
1989 spin_unlock_irqrestore(&fb->state_lock, flags);
1990
1991 if (err)
1992 return err;
1993
1994 spin_lock_irqsave(&vino_drvdata->vino_lock, flags);
1995 spin_lock_irqsave(&vino_drvdata->input_lock, flags2);
1996
1997 vino_dma_setup(vcs, fb);
1998 vino_dma_start(vcs);
1999
2000 spin_unlock_irqrestore(&vino_drvdata->input_lock, flags2);
2001 spin_unlock_irqrestore(&vino_drvdata->vino_lock, flags);
2002
2003 return err;
2004 }
2005
2006 static
2007 struct vino_framebuffer *vino_capture_enqueue(struct
2008 vino_channel_settings *vcs,
2009 unsigned int index)
2010 {
2011 struct vino_framebuffer *fb;
2012 unsigned long flags;
2013
2014 dprintk("vino_capture_enqueue():\n");
2015
2016 spin_lock_irqsave(&vcs->capture_lock, flags);
2017
2018 fb = vino_queue_add(&vcs->fb_queue, index);
2019 if (fb == NULL) {
2020 dprintk("vino_capture_enqueue(): vino_queue_add() failed, "
2021 "queue full?\n");
2022 goto out;
2023 }
2024 out:
2025 spin_unlock_irqrestore(&vcs->capture_lock, flags);
2026
2027 return fb;
2028 }
2029
2030 static int vino_capture_next(struct vino_channel_settings *vcs, int start)
2031 {
2032 struct vino_framebuffer *fb;
2033 unsigned int incoming, id;
2034 int err = 0;
2035 unsigned long flags;
2036
2037 dprintk("vino_capture_next():\n");
2038
2039 spin_lock_irqsave(&vcs->capture_lock, flags);
2040
2041 if (start) {
2042 /* start capture only if capture isn't in progress already */
2043 if (vcs->capturing) {
2044 spin_unlock_irqrestore(&vcs->capture_lock, flags);
2045 return 0;
2046 }
2047
2048 } else {
2049 /* capture next frame:
2050 * stop capture if capturing is not set */
2051 if (!vcs->capturing) {
2052 spin_unlock_irqrestore(&vcs->capture_lock, flags);
2053 return 0;
2054 }
2055 }
2056
2057 err = vino_queue_get_incoming(&vcs->fb_queue, &incoming);
2058 if (err) {
2059 dprintk("vino_capture_next(): vino_queue_get_incoming() "
2060 "failed\n");
2061 err = -EINVAL;
2062 goto out;
2063 }
2064 if (incoming == 0) {
2065 dprintk("vino_capture_next(): no buffers available\n");
2066 goto out;
2067 }
2068
2069 fb = vino_queue_peek(&vcs->fb_queue, &id);
2070 if (fb == NULL) {
2071 dprintk("vino_capture_next(): vino_queue_peek() failed\n");
2072 err = -EINVAL;
2073 goto out;
2074 }
2075
2076 if (start) {
2077 vcs->capturing = 1;
2078 }
2079
2080 spin_unlock_irqrestore(&vcs->capture_lock, flags);
2081
2082 err = vino_capture(vcs, fb);
2083
2084 return err;
2085
2086 out:
2087 vcs->capturing = 0;
2088 spin_unlock_irqrestore(&vcs->capture_lock, flags);
2089
2090 return err;
2091 }
2092
2093 static inline int vino_is_capturing(struct vino_channel_settings *vcs)
2094 {
2095 int ret;
2096 unsigned long flags;
2097
2098 spin_lock_irqsave(&vcs->capture_lock, flags);
2099
2100 ret = vcs->capturing;
2101
2102 spin_unlock_irqrestore(&vcs->capture_lock, flags);
2103
2104 return ret;
2105 }
2106
2107 /* waits until a frame is captured */
2108 static int vino_wait_for_frame(struct vino_channel_settings *vcs)
2109 {
2110 wait_queue_t wait;
2111 int err = 0;
2112
2113 dprintk("vino_wait_for_frame():\n");
2114
2115 init_waitqueue_entry(&wait, current);
2116 /* add ourselves into wait queue */
2117 add_wait_queue(&vcs->fb_queue.frame_wait_queue, &wait);
2118
2119 /* to ensure that schedule_timeout will return immediately
2120 * if VINO interrupt was triggered meanwhile */
2121 schedule_timeout_interruptible(msecs_to_jiffies(100));
2122
2123 if (signal_pending(current))
2124 err = -EINTR;
2125
2126 remove_wait_queue(&vcs->fb_queue.frame_wait_queue, &wait);
2127
2128 dprintk("vino_wait_for_frame(): waiting for frame %s\n",
2129 err ? "failed" : "ok");
2130
2131 return err;
2132 }
2133
2134 /* the function assumes that PAGE_SIZE % 4 == 0 */
2135 static void vino_convert_to_rgba(struct vino_framebuffer *fb) {
2136 unsigned char *pageptr;
2137 unsigned int page, i;
2138 unsigned char a;
2139
2140 for (page = 0; page < fb->desc_table.page_count; page++) {
2141 pageptr = (unsigned char *)fb->desc_table.virtual[page];
2142
2143 for (i = 0; i < PAGE_SIZE; i += 4) {
2144 a = pageptr[0];
2145 pageptr[0] = pageptr[3];
2146 pageptr[1] = pageptr[2];
2147 pageptr[2] = pageptr[1];
2148 pageptr[3] = a;
2149 pageptr += 4;
2150 }
2151 }
2152 }
2153
2154 /* checks if the buffer is in correct state and syncs data */
2155 static int vino_check_buffer(struct vino_channel_settings *vcs,
2156 struct vino_framebuffer *fb)
2157 {
2158 int err = 0;
2159 unsigned long flags;
2160
2161 dprintk("vino_check_buffer():\n");
2162
2163 spin_lock_irqsave(&fb->state_lock, flags);
2164 switch (fb->state) {
2165 case VINO_FRAMEBUFFER_IN_USE:
2166 err = -EIO;
2167 break;
2168 case VINO_FRAMEBUFFER_READY:
2169 vino_sync_buffer(fb);
2170 fb->state = VINO_FRAMEBUFFER_UNUSED;
2171 break;
2172 default:
2173 err = -EINVAL;
2174 }
2175 spin_unlock_irqrestore(&fb->state_lock, flags);
2176
2177 if (!err) {
2178 if (vino_pixel_conversion
2179 && (fb->data_format == VINO_DATA_FMT_RGB32)) {
2180 vino_convert_to_rgba(fb);
2181 }
2182 } else if (err && (err != -EINVAL)) {
2183 dprintk("vino_check_buffer(): buffer not ready\n");
2184
2185 spin_lock_irqsave(&vino_drvdata->vino_lock, flags);
2186 vino_dma_stop(vcs);
2187 vino_clear_interrupt(vcs);
2188 spin_unlock_irqrestore(&vino_drvdata->vino_lock, flags);
2189 }
2190
2191 return err;
2192 }
2193
2194 /* forcefully terminates capture */
2195 static void vino_capture_stop(struct vino_channel_settings *vcs)
2196 {
2197 unsigned int incoming = 0, outgoing = 0, id;
2198 unsigned long flags, flags2;
2199
2200 dprintk("vino_capture_stop():\n");
2201
2202 spin_lock_irqsave(&vcs->capture_lock, flags);
2203
2204 /* unset capturing to stop queue processing */
2205 vcs->capturing = 0;
2206
2207 spin_lock_irqsave(&vino_drvdata->vino_lock, flags2);
2208
2209 vino_dma_stop(vcs);
2210 vino_clear_interrupt(vcs);
2211
2212 spin_unlock_irqrestore(&vino_drvdata->vino_lock, flags2);
2213
2214 /* remove all items from the queue */
2215 if (vino_queue_get_incoming(&vcs->fb_queue, &incoming)) {
2216 dprintk("vino_capture_stop(): "
2217 "vino_queue_get_incoming() failed\n");
2218 goto out;
2219 }
2220 while (incoming > 0) {
2221 vino_queue_transfer(&vcs->fb_queue);
2222
2223 if (vino_queue_get_incoming(&vcs->fb_queue, &incoming)) {
2224 dprintk("vino_capture_stop(): "
2225 "vino_queue_get_incoming() failed\n");
2226 goto out;
2227 }
2228 }
2229
2230 if (vino_queue_get_outgoing(&vcs->fb_queue, &outgoing)) {
2231 dprintk("vino_capture_stop(): "
2232 "vino_queue_get_outgoing() failed\n");
2233 goto out;
2234 }
2235 while (outgoing > 0) {
2236 vino_queue_remove(&vcs->fb_queue, &id);
2237
2238 if (vino_queue_get_outgoing(&vcs->fb_queue, &outgoing)) {
2239 dprintk("vino_capture_stop(): "
2240 "vino_queue_get_outgoing() failed\n");
2241 goto out;
2242 }
2243 }
2244
2245 out:
2246 spin_unlock_irqrestore(&vcs->capture_lock, flags);
2247 }
2248
2249 #if 0
2250 static int vino_capture_failed(struct vino_channel_settings *vcs)
2251 {
2252 struct vino_framebuffer *fb;
2253 unsigned long flags;
2254 unsigned int i;
2255 int ret;
2256
2257 dprintk("vino_capture_failed():\n");
2258
2259 spin_lock_irqsave(&vino_drvdata->vino_lock, flags);
2260
2261 vino_dma_stop(vcs);
2262 vino_clear_interrupt(vcs);
2263
2264 spin_unlock_irqrestore(&vino_drvdata->vino_lock, flags);
2265
2266 ret = vino_queue_get_incoming(&vcs->fb_queue, &i);
2267 if (ret == VINO_QUEUE_ERROR) {
2268 dprintk("vino_queue_get_incoming() failed\n");
2269 return -EINVAL;
2270 }
2271 if (i == 0) {
2272 /* no buffers to process */
2273 return 0;
2274 }
2275
2276 fb = vino_queue_peek(&vcs->fb_queue, &i);
2277 if (fb == NULL) {
2278 dprintk("vino_queue_peek() failed\n");
2279 return -EINVAL;
2280 }
2281
2282 spin_lock_irqsave(&fb->state_lock, flags);
2283 if (fb->state == VINO_FRAMEBUFFER_IN_USE) {
2284 fb->state = VINO_FRAMEBUFFER_UNUSED;
2285 vino_queue_transfer(&vcs->fb_queue);
2286 vino_queue_remove(&vcs->fb_queue, &i);
2287 /* we should actually discard the newest frame,
2288 * but who cares ... */
2289 }
2290 spin_unlock_irqrestore(&fb->state_lock, flags);
2291
2292 return 0;
2293 }
2294 #endif
2295
2296 static void vino_skip_frame(struct vino_channel_settings *vcs)
2297 {
2298 struct vino_framebuffer *fb;
2299 unsigned long flags;
2300 unsigned int id;
2301
2302 spin_lock_irqsave(&vcs->capture_lock, flags);
2303 fb = vino_queue_peek(&vcs->fb_queue, &id);
2304 if (!fb) {
2305 spin_unlock_irqrestore(&vcs->capture_lock, flags);
2306 dprintk("vino_skip_frame(): vino_queue_peek() failed!\n");
2307 return;
2308 }
2309 spin_unlock_irqrestore(&vcs->capture_lock, flags);
2310
2311 spin_lock_irqsave(&fb->state_lock, flags);
2312 fb->state = VINO_FRAMEBUFFER_UNUSED;
2313 spin_unlock_irqrestore(&fb->state_lock, flags);
2314
2315 vino_capture_next(vcs, 0);
2316 }
2317
2318 static void vino_frame_done(struct vino_channel_settings *vcs)
2319 {
2320 struct vino_framebuffer *fb;
2321 unsigned long flags;
2322
2323 spin_lock_irqsave(&vcs->capture_lock, flags);
2324 fb = vino_queue_transfer(&vcs->fb_queue);
2325 if (!fb) {
2326 spin_unlock_irqrestore(&vcs->capture_lock, flags);
2327 dprintk("vino_frame_done(): vino_queue_transfer() failed!\n");
2328 return;
2329 }
2330 spin_unlock_irqrestore(&vcs->capture_lock, flags);
2331
2332 fb->frame_counter = vcs->int_data.frame_counter;
2333 memcpy(&fb->timestamp, &vcs->int_data.timestamp,
2334 sizeof(struct timeval));
2335
2336 spin_lock_irqsave(&fb->state_lock, flags);
2337 if (fb->state == VINO_FRAMEBUFFER_IN_USE)
2338 fb->state = VINO_FRAMEBUFFER_READY;
2339 spin_unlock_irqrestore(&fb->state_lock, flags);
2340
2341 wake_up(&vcs->fb_queue.frame_wait_queue);
2342
2343 vino_capture_next(vcs, 0);
2344 }
2345
2346 static void vino_capture_tasklet(unsigned long channel) {
2347 struct vino_channel_settings *vcs;
2348
2349 vcs = (channel == VINO_CHANNEL_A)
2350 ? &vino_drvdata->a : &vino_drvdata->b;
2351
2352 if (vcs->int_data.skip)
2353 vcs->int_data.skip_count++;
2354
2355 if (vcs->int_data.skip && (vcs->int_data.skip_count
2356 <= VINO_MAX_FRAME_SKIP_COUNT)) {
2357 vino_skip_frame(vcs);
2358 } else {
2359 vcs->int_data.skip_count = 0;
2360 vino_frame_done(vcs);
2361 }
2362 }
2363
2364 static irqreturn_t vino_interrupt(int irq, void *dev_id)
2365 {
2366 u32 ctrl, intr;
2367 unsigned int fc_a, fc_b;
2368 int handled_a = 0, skip_a = 0, done_a = 0;
2369 int handled_b = 0, skip_b = 0, done_b = 0;
2370
2371 #ifdef VINO_DEBUG_INT
2372 int loop = 0;
2373 unsigned int line_count = vino->a.line_count,
2374 page_index = vino->a.page_index,
2375 field_counter = vino->a.field_counter,
2376 start_desc_tbl = vino->a.start_desc_tbl,
2377 next_4_desc = vino->a.next_4_desc;
2378 unsigned int line_count_2,
2379 page_index_2,
2380 field_counter_2,
2381 start_desc_tbl_2,
2382 next_4_desc_2;
2383 #endif
2384
2385 spin_lock(&vino_drvdata->vino_lock);
2386
2387 while ((intr = vino->intr_status)) {
2388 fc_a = vino->a.field_counter >> 1;
2389 fc_b = vino->b.field_counter >> 1;
2390
2391 /* handle error-interrupts in some special way ?
2392 * --> skips frames */
2393 if (intr & VINO_INTSTAT_A) {
2394 if (intr & VINO_INTSTAT_A_EOF) {
2395 vino_drvdata->a.field++;
2396 if (vino_drvdata->a.field > 1) {
2397 vino_dma_stop(&vino_drvdata->a);
2398 vino_clear_interrupt(&vino_drvdata->a);
2399 vino_drvdata->a.field = 0;
2400 done_a = 1;
2401 } else {
2402 if (vino->a.page_index
2403 != vino_drvdata->a.line_size) {
2404 vino->a.line_count = 0;
2405 vino->a.page_index =
2406 vino_drvdata->
2407 a.line_size;
2408 vino->a.next_4_desc =
2409 vino->a.start_desc_tbl;
2410 }
2411 }
2412 dprintk("channel A end-of-field "
2413 "interrupt: %04x\n", intr);
2414 } else {
2415 vino_dma_stop(&vino_drvdata->a);
2416 vino_clear_interrupt(&vino_drvdata->a);
2417 vino_drvdata->a.field = 0;
2418 skip_a = 1;
2419 dprintk("channel A error interrupt: %04x\n",
2420 intr);
2421 }
2422
2423 #ifdef VINO_DEBUG_INT
2424 line_count_2 = vino->a.line_count;
2425 page_index_2 = vino->a.page_index;
2426 field_counter_2 = vino->a.field_counter;
2427 start_desc_tbl_2 = vino->a.start_desc_tbl;
2428 next_4_desc_2 = vino->a.next_4_desc;
2429
2430 printk("intr = %04x, loop = %d, field = %d\n",
2431 intr, loop, vino_drvdata->a.field);
2432 printk("1- line count = %04d, page index = %04d, "
2433 "start = %08x, next = %08x\n"
2434 " fieldc = %d, framec = %d\n",
2435 line_count, page_index, start_desc_tbl,
2436 next_4_desc, field_counter, fc_a);
2437 printk("12-line count = %04d, page index = %04d, "
2438 " start = %08x, next = %08x\n",
2439 line_count_2, page_index_2, start_desc_tbl_2,
2440 next_4_desc_2);
2441
2442 if (done_a)
2443 printk("\n");
2444 #endif
2445 }
2446
2447 if (intr & VINO_INTSTAT_B) {
2448 if (intr & VINO_INTSTAT_B_EOF) {
2449 vino_drvdata->b.field++;
2450 if (vino_drvdata->b.field > 1) {
2451 vino_dma_stop(&vino_drvdata->b);
2452 vino_clear_interrupt(&vino_drvdata->b);
2453 vino_drvdata->b.field = 0;
2454 done_b = 1;
2455 }
2456 dprintk("channel B end-of-field "
2457 "interrupt: %04x\n", intr);
2458 } else {
2459 vino_dma_stop(&vino_drvdata->b);
2460 vino_clear_interrupt(&vino_drvdata->b);
2461 vino_drvdata->b.field = 0;
2462 skip_b = 1;
2463 dprintk("channel B error interrupt: %04x\n",
2464 intr);
2465 }
2466 }
2467
2468 /* Always remember to clear interrupt status.
2469 * Disable VINO interrupts while we do this. */
2470 ctrl = vino->control;
2471 vino->control = ctrl & ~(VINO_CTRL_A_INT | VINO_CTRL_B_INT);
2472 vino->intr_status = ~intr;
2473 vino->control = ctrl;
2474
2475 spin_unlock(&vino_drvdata->vino_lock);
2476
2477 if ((!handled_a) && (done_a || skip_a)) {
2478 if (!skip_a) {
2479 do_gettimeofday(&vino_drvdata->
2480 a.int_data.timestamp);
2481 vino_drvdata->a.int_data.frame_counter = fc_a;
2482 }
2483 vino_drvdata->a.int_data.skip = skip_a;
2484
2485 dprintk("channel A %s, interrupt: %d\n",
2486 skip_a ? "skipping frame" : "frame done",
2487 intr);
2488 tasklet_hi_schedule(&vino_tasklet_a);
2489 handled_a = 1;
2490 }
2491
2492 if ((!handled_b) && (done_b || skip_b)) {
2493 if (!skip_b) {
2494 do_gettimeofday(&vino_drvdata->
2495 b.int_data.timestamp);
2496 vino_drvdata->b.int_data.frame_counter = fc_b;
2497 }
2498 vino_drvdata->b.int_data.skip = skip_b;
2499
2500 dprintk("channel B %s, interrupt: %d\n",
2501 skip_b ? "skipping frame" : "frame done",
2502 intr);
2503 tasklet_hi_schedule(&vino_tasklet_b);
2504 handled_b = 1;
2505 }
2506
2507 #ifdef VINO_DEBUG_INT
2508 loop++;
2509 #endif
2510 spin_lock(&vino_drvdata->vino_lock);
2511 }
2512
2513 spin_unlock(&vino_drvdata->vino_lock);
2514
2515 return IRQ_HANDLED;
2516 }
2517
2518 /* VINO video input management */
2519
2520 static int vino_get_saa7191_input(int input)
2521 {
2522 switch (input) {
2523 case VINO_INPUT_COMPOSITE:
2524 return SAA7191_INPUT_COMPOSITE;
2525 case VINO_INPUT_SVIDEO:
2526 return SAA7191_INPUT_SVIDEO;
2527 default:
2528 printk(KERN_ERR "VINO: vino_get_saa7191_input(): "
2529 "invalid input!\n");
2530 return -1;
2531 }
2532 }
2533
2534 /* execute with input_lock locked */
2535 static int vino_is_input_owner(struct vino_channel_settings *vcs)
2536 {
2537 switch(vcs->input) {
2538 case VINO_INPUT_COMPOSITE:
2539 case VINO_INPUT_SVIDEO:
2540 return vino_drvdata->decoder_owner == vcs->channel;
2541 case VINO_INPUT_D1:
2542 return vino_drvdata->camera_owner == vcs->channel;
2543 default:
2544 return 0;
2545 }
2546 }
2547
2548 static int vino_acquire_input(struct vino_channel_settings *vcs)
2549 {
2550 unsigned long flags;
2551 int ret = 0;
2552
2553 dprintk("vino_acquire_input():\n");
2554
2555 spin_lock_irqsave(&vino_drvdata->input_lock, flags);
2556
2557 /* First try D1 and then SAA7191 */
2558 if (vino_drvdata->camera
2559 && (vino_drvdata->camera_owner == VINO_NO_CHANNEL)) {
2560 vino_drvdata->camera_owner = vcs->channel;
2561 vcs->input = VINO_INPUT_D1;
2562 vcs->data_norm = VINO_DATA_NORM_D1;
2563 } else if (vino_drvdata->decoder
2564 && (vino_drvdata->decoder_owner == VINO_NO_CHANNEL)) {
2565 int input;
2566 int data_norm;
2567 v4l2_std_id norm;
2568
2569 input = VINO_INPUT_COMPOSITE;
2570
2571 ret = decoder_call(video, s_routing,
2572 vino_get_saa7191_input(input), 0, 0);
2573 if (ret) {
2574 ret = -EINVAL;
2575 goto out;
2576 }
2577
2578 spin_unlock_irqrestore(&vino_drvdata->input_lock, flags);
2579
2580 /* Don't hold spinlocks while auto-detecting norm
2581 * as it may take a while... */
2582
2583 ret = decoder_call(video, querystd, &norm);
2584 if (!ret) {
2585 for (data_norm = 0; data_norm < 3; data_norm++) {
2586 if (vino_data_norms[data_norm].std & norm)
2587 break;
2588 }
2589 if (data_norm == 3)
2590 data_norm = VINO_DATA_NORM_PAL;
2591 ret = decoder_call(core, s_std, norm);
2592 }
2593
2594 spin_lock_irqsave(&vino_drvdata->input_lock, flags);
2595
2596 if (ret) {
2597 ret = -EINVAL;
2598 goto out;
2599 }
2600
2601 vino_drvdata->decoder_owner = vcs->channel;
2602
2603 vcs->input = input;
2604 vcs->data_norm = data_norm;
2605 } else {
2606 vcs->input = (vcs->channel == VINO_CHANNEL_A) ?
2607 vino_drvdata->b.input : vino_drvdata->a.input;
2608 vcs->data_norm = (vcs->channel == VINO_CHANNEL_A) ?
2609 vino_drvdata->b.data_norm : vino_drvdata->a.data_norm;
2610 }
2611
2612 if (vcs->input == VINO_INPUT_NONE) {
2613 ret = -ENODEV;
2614 goto out;
2615 }
2616
2617 vino_set_default_clipping(vcs);
2618 vino_set_default_scaling(vcs);
2619 vino_set_default_framerate(vcs);
2620
2621 dprintk("vino_acquire_input(): %s\n", vino_inputs[vcs->input].name);
2622
2623 out:
2624 spin_unlock_irqrestore(&vino_drvdata->input_lock, flags);
2625
2626 return ret;
2627 }
2628
2629 static int vino_set_input(struct vino_channel_settings *vcs, int input)
2630 {
2631 struct vino_channel_settings *vcs2 = (vcs->channel == VINO_CHANNEL_A) ?
2632 &vino_drvdata->b : &vino_drvdata->a;
2633 unsigned long flags;
2634 int ret = 0;
2635
2636 dprintk("vino_set_input():\n");
2637
2638 spin_lock_irqsave(&vino_drvdata->input_lock, flags);
2639
2640 if (vcs->input == input)
2641 goto out;
2642
2643 switch (input) {
2644 case VINO_INPUT_COMPOSITE:
2645 case VINO_INPUT_SVIDEO:
2646 if (!vino_drvdata->decoder) {
2647 ret = -EINVAL;
2648 goto out;
2649 }
2650
2651 if (vino_drvdata->decoder_owner == VINO_NO_CHANNEL) {
2652 vino_drvdata->decoder_owner = vcs->channel;
2653 }
2654
2655 if (vino_drvdata->decoder_owner == vcs->channel) {
2656 int data_norm;
2657 v4l2_std_id norm;
2658
2659 ret = decoder_call(video, s_routing,
2660 vino_get_saa7191_input(input), 0, 0);
2661 if (ret) {
2662 vino_drvdata->decoder_owner = VINO_NO_CHANNEL;
2663 ret = -EINVAL;
2664 goto out;
2665 }
2666
2667 spin_unlock_irqrestore(&vino_drvdata->input_lock, flags);
2668
2669 /* Don't hold spinlocks while auto-detecting norm
2670 * as it may take a while... */
2671
2672 ret = decoder_call(video, querystd, &norm);
2673 if (!ret) {
2674 for (data_norm = 0; data_norm < 3; data_norm++) {
2675 if (vino_data_norms[data_norm].std & norm)
2676 break;
2677 }
2678 if (data_norm == 3)
2679 data_norm = VINO_DATA_NORM_PAL;
2680 ret = decoder_call(core, s_std, norm);
2681 }
2682
2683 spin_lock_irqsave(&vino_drvdata->input_lock, flags);
2684
2685 if (ret) {
2686 vino_drvdata->decoder_owner = VINO_NO_CHANNEL;
2687 ret = -EINVAL;
2688 goto out;
2689 }
2690
2691 vcs->input = input;
2692 vcs->data_norm = data_norm;
2693 } else {
2694 if (input != vcs2->input) {
2695 ret = -EBUSY;
2696 goto out;
2697 }
2698
2699 vcs->input = input;
2700 vcs->data_norm = vcs2->data_norm;
2701 }
2702
2703 if (vino_drvdata->camera_owner == vcs->channel) {
2704 /* Transfer the ownership or release the input */
2705 if (vcs2->input == VINO_INPUT_D1) {
2706 vino_drvdata->camera_owner = vcs2->channel;
2707 } else {
2708 vino_drvdata->camera_owner = VINO_NO_CHANNEL;
2709 }
2710 }
2711 break;
2712 case VINO_INPUT_D1:
2713 if (!vino_drvdata->camera) {
2714 ret = -EINVAL;
2715 goto out;
2716 }
2717
2718 if (vino_drvdata->camera_owner == VINO_NO_CHANNEL)
2719 vino_drvdata->camera_owner = vcs->channel;
2720
2721 if (vino_drvdata->decoder_owner == vcs->channel) {
2722 /* Transfer the ownership or release the input */
2723 if ((vcs2->input == VINO_INPUT_COMPOSITE) ||
2724 (vcs2->input == VINO_INPUT_SVIDEO)) {
2725 vino_drvdata->decoder_owner = vcs2->channel;
2726 } else {
2727 vino_drvdata->decoder_owner = VINO_NO_CHANNEL;
2728 }
2729 }
2730
2731 vcs->input = input;
2732 vcs->data_norm = VINO_DATA_NORM_D1;
2733 break;
2734 default:
2735 ret = -EINVAL;
2736 goto out;
2737 }
2738
2739 vino_set_default_clipping(vcs);
2740 vino_set_default_scaling(vcs);
2741 vino_set_default_framerate(vcs);
2742
2743 dprintk("vino_set_input(): %s\n", vino_inputs[vcs->input].name);
2744
2745 out:
2746 spin_unlock_irqrestore(&vino_drvdata->input_lock, flags);
2747
2748 return ret;
2749 }
2750
2751 static void vino_release_input(struct vino_channel_settings *vcs)
2752 {
2753 struct vino_channel_settings *vcs2 = (vcs->channel == VINO_CHANNEL_A) ?
2754 &vino_drvdata->b : &vino_drvdata->a;
2755 unsigned long flags;
2756
2757 dprintk("vino_release_input():\n");
2758
2759 spin_lock_irqsave(&vino_drvdata->input_lock, flags);
2760
2761 /* Release ownership of the channel
2762 * and if the other channel takes input from
2763 * the same source, transfer the ownership */
2764 if (vino_drvdata->camera_owner == vcs->channel) {
2765 if (vcs2->input == VINO_INPUT_D1) {
2766 vino_drvdata->camera_owner = vcs2->channel;
2767 } else {
2768 vino_drvdata->camera_owner = VINO_NO_CHANNEL;
2769 }
2770 } else if (vino_drvdata->decoder_owner == vcs->channel) {
2771 if ((vcs2->input == VINO_INPUT_COMPOSITE) ||
2772 (vcs2->input == VINO_INPUT_SVIDEO)) {
2773 vino_drvdata->decoder_owner = vcs2->channel;
2774 } else {
2775 vino_drvdata->decoder_owner = VINO_NO_CHANNEL;
2776 }
2777 }
2778 vcs->input = VINO_INPUT_NONE;
2779
2780 spin_unlock_irqrestore(&vino_drvdata->input_lock, flags);
2781 }
2782
2783 /* execute with input_lock locked */
2784 static int vino_set_data_norm(struct vino_channel_settings *vcs,
2785 unsigned int data_norm,
2786 unsigned long *flags)
2787 {
2788 int err = 0;
2789
2790 if (data_norm == vcs->data_norm)
2791 return 0;
2792
2793 switch (vcs->input) {
2794 case VINO_INPUT_D1:
2795 /* only one "norm" supported */
2796 if (data_norm != VINO_DATA_NORM_D1)
2797 return -EINVAL;
2798 break;
2799 case VINO_INPUT_COMPOSITE:
2800 case VINO_INPUT_SVIDEO: {
2801 v4l2_std_id norm;
2802
2803 if ((data_norm != VINO_DATA_NORM_PAL)
2804 && (data_norm != VINO_DATA_NORM_NTSC)
2805 && (data_norm != VINO_DATA_NORM_SECAM))
2806 return -EINVAL;
2807
2808 spin_unlock_irqrestore(&vino_drvdata->input_lock, *flags);
2809
2810 /* Don't hold spinlocks while setting norm
2811 * as it may take a while... */
2812
2813 norm = vino_data_norms[data_norm].std;
2814 err = decoder_call(core, s_std, norm);
2815
2816 spin_lock_irqsave(&vino_drvdata->input_lock, *flags);
2817
2818 if (err)
2819 goto out;
2820
2821 vcs->data_norm = data_norm;
2822
2823 vino_set_default_clipping(vcs);
2824 vino_set_default_scaling(vcs);
2825 vino_set_default_framerate(vcs);
2826 break;
2827 }
2828 default:
2829 return -EINVAL;
2830 }
2831
2832 out:
2833 return err;
2834 }
2835
2836 /* V4L2 helper functions */
2837
2838 static int vino_find_data_format(__u32 pixelformat)
2839 {
2840 int i;
2841
2842 for (i = 0; i < VINO_DATA_FMT_COUNT; i++) {
2843 if (vino_data_formats[i].pixelformat == pixelformat)
2844 return i;
2845 }
2846
2847 return VINO_DATA_FMT_NONE;
2848 }
2849
2850 static int vino_int_enum_input(struct vino_channel_settings *vcs, __u32 index)
2851 {
2852 int input = VINO_INPUT_NONE;
2853 unsigned long flags;
2854
2855 spin_lock_irqsave(&vino_drvdata->input_lock, flags);
2856 if (vino_drvdata->decoder && vino_drvdata->camera) {
2857 switch (index) {
2858 case 0:
2859 input = VINO_INPUT_COMPOSITE;
2860 break;
2861 case 1:
2862 input = VINO_INPUT_SVIDEO;
2863 break;
2864 case 2:
2865 input = VINO_INPUT_D1;
2866 break;
2867 }
2868 } else if (vino_drvdata->decoder) {
2869 switch (index) {
2870 case 0:
2871 input = VINO_INPUT_COMPOSITE;
2872 break;
2873 case 1:
2874 input = VINO_INPUT_SVIDEO;
2875 break;
2876 }
2877 } else if (vino_drvdata->camera) {
2878 switch (index) {
2879 case 0:
2880 input = VINO_INPUT_D1;
2881 break;
2882 }
2883 }
2884 spin_unlock_irqrestore(&vino_drvdata->input_lock, flags);
2885
2886 return input;
2887 }
2888
2889 /* execute with input_lock locked */
2890 static __u32 vino_find_input_index(struct vino_channel_settings *vcs)
2891 {
2892 __u32 index = 0;
2893 // FIXME: detect when no inputs available
2894
2895 if (vino_drvdata->decoder && vino_drvdata->camera) {
2896 switch (vcs->input) {
2897 case VINO_INPUT_COMPOSITE:
2898 index = 0;
2899 break;
2900 case VINO_INPUT_SVIDEO:
2901 index = 1;
2902 break;
2903 case VINO_INPUT_D1:
2904 index = 2;
2905 break;
2906 }
2907 } else if (vino_drvdata->decoder) {
2908 switch (vcs->input) {
2909 case VINO_INPUT_COMPOSITE:
2910 index = 0;
2911 break;
2912 case VINO_INPUT_SVIDEO:
2913 index = 1;
2914 break;
2915 }
2916 } else if (vino_drvdata->camera) {
2917 switch (vcs->input) {
2918 case VINO_INPUT_D1:
2919 index = 0;
2920 break;
2921 }
2922 }
2923
2924 return index;
2925 }
2926
2927 /* V4L2 ioctls */
2928
2929 static int vino_querycap(struct file *file, void *__fh,
2930 struct v4l2_capability *cap)
2931 {
2932 memset(cap, 0, sizeof(struct v4l2_capability));
2933
2934 strcpy(cap->driver, vino_driver_name);
2935 strcpy(cap->card, vino_driver_description);
2936 strcpy(cap->bus_info, vino_bus_name);
2937 cap->version = VINO_VERSION_CODE;
2938 cap->capabilities =
2939 V4L2_CAP_VIDEO_CAPTURE |
2940 V4L2_CAP_STREAMING;
2941 // V4L2_CAP_OVERLAY, V4L2_CAP_READWRITE
2942 return 0;
2943 }
2944
2945 static int vino_enum_input(struct file *file, void *__fh,
2946 struct v4l2_input *i)
2947 {
2948 struct vino_channel_settings *vcs = video_drvdata(file);
2949 __u32 index = i->index;
2950 int input;
2951 dprintk("requested index = %d\n", index);
2952
2953 input = vino_int_enum_input(vcs, index);
2954 if (input == VINO_INPUT_NONE)
2955 return -EINVAL;
2956
2957 memset(i, 0, sizeof(struct v4l2_input));
2958
2959 i->index = index;
2960 i->type = V4L2_INPUT_TYPE_CAMERA;
2961 i->std = vino_inputs[input].std;
2962 strcpy(i->name, vino_inputs[input].name);
2963
2964 if (input == VINO_INPUT_COMPOSITE || input == VINO_INPUT_SVIDEO)
2965 decoder_call(video, g_input_status, &i->status);
2966 return 0;
2967 }
2968
2969 static int vino_g_input(struct file *file, void *__fh,
2970 unsigned int *i)
2971 {
2972 struct vino_channel_settings *vcs = video_drvdata(file);
2973 __u32 index;
2974 int input;
2975 unsigned long flags;
2976
2977 spin_lock_irqsave(&vino_drvdata->input_lock, flags);
2978 input = vcs->input;
2979 index = vino_find_input_index(vcs);
2980 spin_unlock_irqrestore(&vino_drvdata->input_lock, flags);
2981
2982 dprintk("input = %d\n", input);
2983
2984 if (input == VINO_INPUT_NONE) {
2985 return -EINVAL;
2986 }
2987
2988 *i = index;
2989
2990 return 0;
2991 }
2992
2993 static int vino_s_input(struct file *file, void *__fh,
2994 unsigned int i)
2995 {
2996 struct vino_channel_settings *vcs = video_drvdata(file);
2997 int input;
2998 dprintk("requested input = %d\n", i);
2999
3000 input = vino_int_enum_input(vcs, i);
3001 if (input == VINO_INPUT_NONE)
3002 return -EINVAL;
3003
3004 return vino_set_input(vcs, input);
3005 }
3006
3007 static int vino_querystd(struct file *file, void *__fh,
3008 v4l2_std_id *std)
3009 {
3010 struct vino_channel_settings *vcs = video_drvdata(file);
3011 unsigned long flags;
3012 int err = 0;
3013
3014 spin_lock_irqsave(&vino_drvdata->input_lock, flags);
3015
3016 switch (vcs->input) {
3017 case VINO_INPUT_D1:
3018 *std = vino_inputs[vcs->input].std;
3019 break;
3020 case VINO_INPUT_COMPOSITE:
3021 case VINO_INPUT_SVIDEO: {
3022 decoder_call(video, querystd, std);
3023 break;
3024 }
3025 default:
3026 err = -EINVAL;
3027 }
3028
3029 spin_unlock_irqrestore(&vino_drvdata->input_lock, flags);
3030
3031 return err;
3032 }
3033
3034 static int vino_g_std(struct file *file, void *__fh,
3035 v4l2_std_id *std)
3036 {
3037 struct vino_channel_settings *vcs = video_drvdata(file);
3038 unsigned long flags;
3039
3040 spin_lock_irqsave(&vino_drvdata->input_lock, flags);
3041
3042 *std = vino_data_norms[vcs->data_norm].std;
3043 dprintk("current standard = %d\n", vcs->data_norm);
3044
3045 spin_unlock_irqrestore(&vino_drvdata->input_lock, flags);
3046
3047 return 0;
3048 }
3049
3050 static int vino_s_std(struct file *file, void *__fh,
3051 v4l2_std_id *std)
3052 {
3053 struct vino_channel_settings *vcs = video_drvdata(file);
3054 unsigned long flags;
3055 int ret = 0;
3056
3057 spin_lock_irqsave(&vino_drvdata->input_lock, flags);
3058
3059 if (!vino_is_input_owner(vcs)) {
3060 ret = -EBUSY;
3061 goto out;
3062 }
3063
3064 /* check if the standard is valid for the current input */
3065 if ((*std) & vino_inputs[vcs->input].std) {
3066 dprintk("standard accepted\n");
3067
3068 /* change the video norm for SAA7191
3069 * and accept NTSC for D1 (do nothing) */
3070
3071 if (vcs->input == VINO_INPUT_D1)
3072 goto out;
3073
3074 if ((*std) & V4L2_STD_PAL) {
3075 ret = vino_set_data_norm(vcs, VINO_DATA_NORM_PAL,
3076 &flags);
3077 } else if ((*std) & V4L2_STD_NTSC) {
3078 ret = vino_set_data_norm(vcs, VINO_DATA_NORM_NTSC,
3079 &flags);
3080 } else if ((*std) & V4L2_STD_SECAM) {
3081 ret = vino_set_data_norm(vcs, VINO_DATA_NORM_SECAM,
3082 &flags);
3083 } else {
3084 ret = -EINVAL;
3085 }
3086
3087 if (ret) {
3088 ret = -EINVAL;
3089 }
3090 } else {
3091 ret = -EINVAL;
3092 }
3093
3094 out:
3095 spin_unlock_irqrestore(&vino_drvdata->input_lock, flags);
3096
3097 return ret;
3098 }
3099
3100 static int vino_enum_fmt_vid_cap(struct file *file, void *__fh,
3101 struct v4l2_fmtdesc *fd)
3102 {
3103 dprintk("format index = %d\n", fd->index);
3104
3105 if (fd->index >= VINO_DATA_FMT_COUNT)
3106 return -EINVAL;
3107 dprintk("format name = %s\n", vino_data_formats[fd->index].description);
3108
3109 fd->pixelformat = vino_data_formats[fd->index].pixelformat;
3110 strcpy(fd->description, vino_data_formats[fd->index].description);
3111 return 0;
3112 }
3113
3114 static int vino_try_fmt_vid_cap(struct file *file, void *__fh,
3115 struct v4l2_format *f)
3116 {
3117 struct vino_channel_settings *vcs = video_drvdata(file);
3118 struct vino_channel_settings tempvcs;
3119 unsigned long flags;
3120 struct v4l2_pix_format *pf = &f->fmt.pix;
3121
3122 dprintk("requested: w = %d, h = %d\n",
3123 pf->width, pf->height);
3124
3125 spin_lock_irqsave(&vino_drvdata->input_lock, flags);
3126 memcpy(&tempvcs, vcs, sizeof(struct vino_channel_settings));
3127 spin_unlock_irqrestore(&vino_drvdata->input_lock, flags);
3128
3129 tempvcs.data_format = vino_find_data_format(pf->pixelformat);
3130 if (tempvcs.data_format == VINO_DATA_FMT_NONE) {
3131 tempvcs.data_format = VINO_DATA_FMT_GREY;
3132 pf->pixelformat =
3133 vino_data_formats[tempvcs.data_format].
3134 pixelformat;
3135 }
3136
3137 /* data format must be set before clipping/scaling */
3138 vino_set_scaling(&tempvcs, pf->width, pf->height);
3139
3140 dprintk("data format = %s\n",
3141 vino_data_formats[tempvcs.data_format].description);
3142
3143 pf->width = (tempvcs.clipping.right - tempvcs.clipping.left) /
3144 tempvcs.decimation;
3145 pf->height = (tempvcs.clipping.bottom - tempvcs.clipping.top) /
3146 tempvcs.decimation;
3147
3148 pf->field = V4L2_FIELD_INTERLACED;
3149 pf->bytesperline = tempvcs.line_size;
3150 pf->sizeimage = tempvcs.line_size *
3151 (tempvcs.clipping.bottom - tempvcs.clipping.top) /
3152 tempvcs.decimation;
3153 pf->colorspace =
3154 vino_data_formats[tempvcs.data_format].colorspace;
3155
3156 pf->priv = 0;
3157 return 0;
3158 }
3159
3160 static int vino_g_fmt_vid_cap(struct file *file, void *__fh,
3161 struct v4l2_format *f)
3162 {
3163 struct vino_channel_settings *vcs = video_drvdata(file);
3164 unsigned long flags;
3165 struct v4l2_pix_format *pf = &f->fmt.pix;
3166
3167 spin_lock_irqsave(&vino_drvdata->input_lock, flags);
3168
3169 pf->width = (vcs->clipping.right - vcs->clipping.left) /
3170 vcs->decimation;
3171 pf->height = (vcs->clipping.bottom - vcs->clipping.top) /
3172 vcs->decimation;
3173 pf->pixelformat =
3174 vino_data_formats[vcs->data_format].pixelformat;
3175
3176 pf->field = V4L2_FIELD_INTERLACED;
3177 pf->bytesperline = vcs->line_size;
3178 pf->sizeimage = vcs->line_size *
3179 (vcs->clipping.bottom - vcs->clipping.top) /
3180 vcs->decimation;
3181 pf->colorspace =
3182 vino_data_formats[vcs->data_format].colorspace;
3183
3184 pf->priv = 0;
3185
3186 spin_unlock_irqrestore(&vino_drvdata->input_lock, flags);
3187 return 0;
3188 }
3189
3190 static int vino_s_fmt_vid_cap(struct file *file, void *__fh,
3191 struct v4l2_format *f)
3192 {
3193 struct vino_channel_settings *vcs = video_drvdata(file);
3194 int data_format;
3195 unsigned long flags;
3196 struct v4l2_pix_format *pf = &f->fmt.pix;
3197
3198 spin_lock_irqsave(&vino_drvdata->input_lock, flags);
3199
3200 data_format = vino_find_data_format(pf->pixelformat);
3201
3202 if (data_format == VINO_DATA_FMT_NONE) {
3203 vcs->data_format = VINO_DATA_FMT_GREY;
3204 pf->pixelformat =
3205 vino_data_formats[vcs->data_format].
3206 pixelformat;
3207 } else {
3208 vcs->data_format = data_format;
3209 }
3210
3211 /* data format must be set before clipping/scaling */
3212 vino_set_scaling(vcs, pf->width, pf->height);
3213
3214 dprintk("data format = %s\n",
3215 vino_data_formats[vcs->data_format].description);
3216
3217 pf->width = vcs->clipping.right - vcs->clipping.left;
3218 pf->height = vcs->clipping.bottom - vcs->clipping.top;
3219
3220 pf->field = V4L2_FIELD_INTERLACED;
3221 pf->bytesperline = vcs->line_size;
3222 pf->sizeimage = vcs->line_size *
3223 (vcs->clipping.bottom - vcs->clipping.top) /
3224 vcs->decimation;
3225 pf->colorspace =
3226 vino_data_formats[vcs->data_format].colorspace;
3227
3228 pf->priv = 0;
3229
3230 spin_unlock_irqrestore(&vino_drvdata->input_lock, flags);
3231 return 0;
3232 }
3233
3234 static int vino_cropcap(struct file *file, void *__fh,
3235 struct v4l2_cropcap *ccap)
3236 {
3237 struct vino_channel_settings *vcs = video_drvdata(file);
3238 const struct vino_data_norm *norm;
3239 unsigned long flags;
3240
3241 switch (ccap->type) {
3242 case V4L2_BUF_TYPE_VIDEO_CAPTURE:
3243 spin_lock_irqsave(&vino_drvdata->input_lock, flags);
3244
3245 norm = &vino_data_norms[vcs->data_norm];
3246
3247 spin_unlock_irqrestore(&vino_drvdata->input_lock, flags);
3248
3249 ccap->bounds.left = 0;
3250 ccap->bounds.top = 0;
3251 ccap->bounds.width = norm->width;
3252 ccap->bounds.height = norm->height;
3253 memcpy(&ccap->defrect, &ccap->bounds,
3254 sizeof(struct v4l2_rect));
3255
3256 ccap->pixelaspect.numerator = 1;
3257 ccap->pixelaspect.denominator = 1;
3258 break;
3259 case V4L2_BUF_TYPE_VIDEO_OVERLAY:
3260 default:
3261 return -EINVAL;
3262 }
3263
3264 return 0;
3265 }
3266
3267 static int vino_g_crop(struct file *file, void *__fh,
3268 struct v4l2_crop *c)
3269 {
3270 struct vino_channel_settings *vcs = video_drvdata(file);
3271 unsigned long flags;
3272
3273 switch (c->type) {
3274 case V4L2_BUF_TYPE_VIDEO_CAPTURE:
3275 spin_lock_irqsave(&vino_drvdata->input_lock, flags);
3276
3277 c->c.left = vcs->clipping.left;
3278 c->c.top = vcs->clipping.top;
3279 c->c.width = vcs->clipping.right - vcs->clipping.left;
3280 c->c.height = vcs->clipping.bottom - vcs->clipping.top;
3281
3282 spin_unlock_irqrestore(&vino_drvdata->input_lock, flags);
3283 break;
3284 case V4L2_BUF_TYPE_VIDEO_OVERLAY:
3285 default:
3286 return -EINVAL;
3287 }
3288
3289 return 0;
3290 }
3291
3292 static int vino_s_crop(struct file *file, void *__fh,
3293 struct v4l2_crop *c)
3294 {
3295 struct vino_channel_settings *vcs = video_drvdata(file);
3296 unsigned long flags;
3297
3298 switch (c->type) {
3299 case V4L2_BUF_TYPE_VIDEO_CAPTURE:
3300 spin_lock_irqsave(&vino_drvdata->input_lock, flags);
3301
3302 vino_set_clipping(vcs, c->c.left, c->c.top,
3303 c->c.width, c->c.height);
3304
3305 spin_unlock_irqrestore(&vino_drvdata->input_lock, flags);
3306 break;
3307 case V4L2_BUF_TYPE_VIDEO_OVERLAY:
3308 default:
3309 return -EINVAL;
3310 }
3311
3312 return 0;
3313 }
3314
3315 static int vino_g_parm(struct file *file, void *__fh,
3316 struct v4l2_streamparm *sp)
3317 {
3318 struct vino_channel_settings *vcs = video_drvdata(file);
3319 unsigned long flags;
3320 struct v4l2_captureparm *cp = &sp->parm.capture;
3321
3322 cp->capability = V4L2_CAP_TIMEPERFRAME;
3323 cp->timeperframe.numerator = 1;
3324
3325 spin_lock_irqsave(&vino_drvdata->input_lock, flags);
3326
3327 cp->timeperframe.denominator = vcs->fps;
3328
3329 spin_unlock_irqrestore(&vino_drvdata->input_lock, flags);
3330
3331 /* TODO: cp->readbuffers = xxx; */
3332
3333 return 0;
3334 }
3335
3336 static int vino_s_parm(struct file *file, void *__fh,
3337 struct v4l2_streamparm *sp)
3338 {
3339 struct vino_channel_settings *vcs = video_drvdata(file);
3340 unsigned long flags;
3341 struct v4l2_captureparm *cp = &sp->parm.capture;
3342
3343 spin_lock_irqsave(&vino_drvdata->input_lock, flags);
3344
3345 if ((cp->timeperframe.numerator == 0) ||
3346 (cp->timeperframe.denominator == 0)) {
3347 /* reset framerate */
3348 vino_set_default_framerate(vcs);
3349 } else {
3350 vino_set_framerate(vcs, cp->timeperframe.denominator /
3351 cp->timeperframe.numerator);
3352 }
3353
3354 spin_unlock_irqrestore(&vino_drvdata->input_lock, flags);
3355
3356 return 0;
3357 }
3358
3359 static int vino_reqbufs(struct file *file, void *__fh,
3360 struct v4l2_requestbuffers *rb)
3361 {
3362 struct vino_channel_settings *vcs = video_drvdata(file);
3363
3364 if (vcs->reading)
3365 return -EBUSY;
3366
3367 /* TODO: check queue type */
3368 if (rb->memory != V4L2_MEMORY_MMAP) {
3369 dprintk("type not mmap\n");
3370 return -EINVAL;
3371 }
3372
3373 dprintk("count = %d\n", rb->count);
3374 if (rb->count > 0) {
3375 if (vino_is_capturing(vcs)) {
3376 dprintk("busy, capturing\n");
3377 return -EBUSY;
3378 }
3379
3380 if (vino_queue_has_mapped_buffers(&vcs->fb_queue)) {
3381 dprintk("busy, buffers still mapped\n");
3382 return -EBUSY;
3383 } else {
3384 vcs->streaming = 0;
3385 vino_queue_free(&vcs->fb_queue);
3386 vino_queue_init(&vcs->fb_queue, &rb->count);
3387 }
3388 } else {
3389 vcs->streaming = 0;
3390 vino_capture_stop(vcs);
3391 vino_queue_free(&vcs->fb_queue);
3392 }
3393
3394 return 0;
3395 }
3396
3397 static void vino_v4l2_get_buffer_status(struct vino_channel_settings *vcs,
3398 struct vino_framebuffer *fb,
3399 struct v4l2_buffer *b)
3400 {
3401 if (vino_queue_outgoing_contains(&vcs->fb_queue,
3402 fb->id)) {
3403 b->flags &= ~V4L2_BUF_FLAG_QUEUED;
3404 b->flags |= V4L2_BUF_FLAG_DONE;
3405 } else if (vino_queue_incoming_contains(&vcs->fb_queue,
3406 fb->id)) {
3407 b->flags &= ~V4L2_BUF_FLAG_DONE;
3408 b->flags |= V4L2_BUF_FLAG_QUEUED;
3409 } else {
3410 b->flags &= ~(V4L2_BUF_FLAG_DONE |
3411 V4L2_BUF_FLAG_QUEUED);
3412 }
3413
3414 b->flags &= ~(V4L2_BUF_FLAG_TIMECODE);
3415
3416 if (fb->map_count > 0)
3417 b->flags |= V4L2_BUF_FLAG_MAPPED;
3418
3419 b->index = fb->id;
3420 b->memory = (vcs->fb_queue.type == VINO_MEMORY_MMAP) ?
3421 V4L2_MEMORY_MMAP : V4L2_MEMORY_USERPTR;
3422 b->m.offset = fb->offset;
3423 b->bytesused = fb->data_size;
3424 b->length = fb->size;
3425 b->field = V4L2_FIELD_INTERLACED;
3426 b->sequence = fb->frame_counter;
3427 memcpy(&b->timestamp, &fb->timestamp,
3428 sizeof(struct timeval));
3429 // b->input ?
3430
3431 dprintk("buffer %d: length = %d, bytesused = %d, offset = %d\n",
3432 fb->id, fb->size, fb->data_size, fb->offset);
3433 }
3434
3435 static int vino_querybuf(struct file *file, void *__fh,
3436 struct v4l2_buffer *b)
3437 {
3438 struct vino_channel_settings *vcs = video_drvdata(file);
3439 struct vino_framebuffer *fb;
3440
3441 if (vcs->reading)
3442 return -EBUSY;
3443
3444 /* TODO: check queue type */
3445 if (b->index >= vino_queue_get_length(&vcs->fb_queue)) {
3446 dprintk("invalid index = %d\n",
3447 b->index);
3448 return -EINVAL;
3449 }
3450
3451 fb = vino_queue_get_buffer(&vcs->fb_queue,
3452 b->index);
3453 if (fb == NULL) {
3454 dprintk("vino_queue_get_buffer() failed");
3455 return -EINVAL;
3456 }
3457
3458 vino_v4l2_get_buffer_status(vcs, fb, b);
3459
3460 return 0;
3461 }
3462
3463 static int vino_qbuf(struct file *file, void *__fh,
3464 struct v4l2_buffer *b)
3465 {
3466 struct vino_channel_settings *vcs = video_drvdata(file);
3467 struct vino_framebuffer *fb;
3468 int ret;
3469
3470 if (vcs->reading)
3471 return -EBUSY;
3472
3473 /* TODO: check queue type */
3474 if (b->memory != V4L2_MEMORY_MMAP) {
3475 dprintk("type not mmap\n");
3476 return -EINVAL;
3477 }
3478
3479 fb = vino_capture_enqueue(vcs, b->index);
3480 if (fb == NULL)
3481 return -EINVAL;
3482
3483 vino_v4l2_get_buffer_status(vcs, fb, b);
3484
3485 if (vcs->streaming) {
3486 ret = vino_capture_next(vcs, 1);
3487 if (ret)
3488 return ret;
3489 }
3490
3491 return 0;
3492 }
3493
3494 static int vino_dqbuf(struct file *file, void *__fh,
3495 struct v4l2_buffer *b)
3496 {
3497 struct vino_channel_settings *vcs = video_drvdata(file);
3498 unsigned int nonblocking = file->f_flags & O_NONBLOCK;
3499 struct vino_framebuffer *fb;
3500 unsigned int incoming, outgoing;
3501 int err;
3502
3503 if (vcs->reading)
3504 return -EBUSY;
3505
3506 /* TODO: check queue type */
3507
3508 err = vino_queue_get_incoming(&vcs->fb_queue, &incoming);
3509 if (err) {
3510 dprintk("vino_queue_get_incoming() failed\n");
3511 return -EINVAL;
3512 }
3513 err = vino_queue_get_outgoing(&vcs->fb_queue, &outgoing);
3514 if (err) {
3515 dprintk("vino_queue_get_outgoing() failed\n");
3516 return -EINVAL;
3517 }
3518
3519 dprintk("incoming = %d, outgoing = %d\n", incoming, outgoing);
3520
3521 if (outgoing == 0) {
3522 if (incoming == 0) {
3523 dprintk("no incoming or outgoing buffers\n");
3524 return -EINVAL;
3525 }
3526 if (nonblocking) {
3527 dprintk("non-blocking I/O was selected and "
3528 "there are no buffers to dequeue\n");
3529 return -EAGAIN;
3530 }
3531
3532 err = vino_wait_for_frame(vcs);
3533 if (err) {
3534 err = vino_wait_for_frame(vcs);
3535 if (err) {
3536 /* interrupted or no frames captured because of
3537 * frame skipping */
3538 /* vino_capture_failed(vcs); */
3539 return -EIO;
3540 }
3541 }
3542 }
3543
3544 fb = vino_queue_remove(&vcs->fb_queue, &b->index);
3545 if (fb == NULL) {
3546 dprintk("vino_queue_remove() failed\n");
3547 return -EINVAL;
3548 }
3549
3550 err = vino_check_buffer(vcs, fb);
3551
3552 vino_v4l2_get_buffer_status(vcs, fb, b);
3553
3554 if (err)
3555 return -EIO;
3556
3557 return 0;
3558 }
3559
3560 static int vino_streamon(struct file *file, void *__fh,
3561 enum v4l2_buf_type i)
3562 {
3563 struct vino_channel_settings *vcs = video_drvdata(file);
3564 unsigned int incoming;
3565 int ret;
3566 if (vcs->reading)
3567 return -EBUSY;
3568
3569 if (vcs->streaming)
3570 return 0;
3571
3572 // TODO: check queue type
3573
3574 if (vino_queue_get_length(&vcs->fb_queue) < 1) {
3575 dprintk("no buffers allocated\n");
3576 return -EINVAL;
3577 }
3578
3579 ret = vino_queue_get_incoming(&vcs->fb_queue, &incoming);
3580 if (ret) {
3581 dprintk("vino_queue_get_incoming() failed\n");
3582 return -EINVAL;
3583 }
3584
3585 vcs->streaming = 1;
3586
3587 if (incoming > 0) {
3588 ret = vino_capture_next(vcs, 1);
3589 if (ret) {
3590 vcs->streaming = 0;
3591
3592 dprintk("couldn't start capture\n");
3593 return -EINVAL;
3594 }
3595 }
3596
3597 return 0;
3598 }
3599
3600 static int vino_streamoff(struct file *file, void *__fh,
3601 enum v4l2_buf_type i)
3602 {
3603 struct vino_channel_settings *vcs = video_drvdata(file);
3604 if (vcs->reading)
3605 return -EBUSY;
3606
3607 if (!vcs->streaming)
3608 return 0;
3609
3610 vcs->streaming = 0;
3611 vino_capture_stop(vcs);
3612
3613 return 0;
3614 }
3615
3616 static int vino_queryctrl(struct file *file, void *__fh,
3617 struct v4l2_queryctrl *queryctrl)
3618 {
3619 struct vino_channel_settings *vcs = video_drvdata(file);
3620 unsigned long flags;
3621 int i;
3622 int err = 0;
3623
3624 spin_lock_irqsave(&vino_drvdata->input_lock, flags);
3625
3626 switch (vcs->input) {
3627 case VINO_INPUT_D1:
3628 for (i = 0; i < VINO_INDYCAM_V4L2_CONTROL_COUNT; i++) {
3629 if (vino_indycam_v4l2_controls[i].id ==
3630 queryctrl->id) {
3631 memcpy(queryctrl,
3632 &vino_indycam_v4l2_controls[i],
3633 sizeof(struct v4l2_queryctrl));
3634 queryctrl->reserved[0] = 0;
3635 goto found;
3636 }
3637 }
3638
3639 err = -EINVAL;
3640 break;
3641 case VINO_INPUT_COMPOSITE:
3642 case VINO_INPUT_SVIDEO:
3643 for (i = 0; i < VINO_SAA7191_V4L2_CONTROL_COUNT; i++) {
3644 if (vino_saa7191_v4l2_controls[i].id ==
3645 queryctrl->id) {
3646 memcpy(queryctrl,
3647 &vino_saa7191_v4l2_controls[i],
3648 sizeof(struct v4l2_queryctrl));
3649 queryctrl->reserved[0] = 0;
3650 goto found;
3651 }
3652 }
3653
3654 err = -EINVAL;
3655 break;
3656 default:
3657 err = -EINVAL;
3658 }
3659
3660 found:
3661 spin_unlock_irqrestore(&vino_drvdata->input_lock, flags);
3662
3663 return err;
3664 }
3665
3666 static int vino_g_ctrl(struct file *file, void *__fh,
3667 struct v4l2_control *control)
3668 {
3669 struct vino_channel_settings *vcs = video_drvdata(file);
3670 unsigned long flags;
3671 int i;
3672 int err = 0;
3673
3674 spin_lock_irqsave(&vino_drvdata->input_lock, flags);
3675
3676 switch (vcs->input) {
3677 case VINO_INPUT_D1: {
3678 err = -EINVAL;
3679 for (i = 0; i < VINO_INDYCAM_V4L2_CONTROL_COUNT; i++) {
3680 if (vino_indycam_v4l2_controls[i].id == control->id) {
3681 err = 0;
3682 break;
3683 }
3684 }
3685
3686 if (err)
3687 goto out;
3688
3689 err = camera_call(core, g_ctrl, control);
3690 if (err)
3691 err = -EINVAL;
3692 break;
3693 }
3694 case VINO_INPUT_COMPOSITE:
3695 case VINO_INPUT_SVIDEO: {
3696 err = -EINVAL;
3697 for (i = 0; i < VINO_SAA7191_V4L2_CONTROL_COUNT; i++) {
3698 if (vino_saa7191_v4l2_controls[i].id == control->id) {
3699 err = 0;
3700 break;
3701 }
3702 }
3703
3704 if (err)
3705 goto out;
3706
3707 err = decoder_call(core, g_ctrl, control);
3708 if (err)
3709 err = -EINVAL;
3710 break;
3711 }
3712 default:
3713 err = -EINVAL;
3714 }
3715
3716 out:
3717 spin_unlock_irqrestore(&vino_drvdata->input_lock, flags);
3718
3719 return err;
3720 }
3721
3722 static int vino_s_ctrl(struct file *file, void *__fh,
3723 struct v4l2_control *control)
3724 {
3725 struct vino_channel_settings *vcs = video_drvdata(file);
3726 unsigned long flags;
3727 int i;
3728 int err = 0;
3729
3730 spin_lock_irqsave(&vino_drvdata->input_lock, flags);
3731
3732 if (!vino_is_input_owner(vcs)) {
3733 err = -EBUSY;
3734 goto out;
3735 }
3736
3737 switch (vcs->input) {
3738 case VINO_INPUT_D1: {
3739 err = -EINVAL;
3740 for (i = 0; i < VINO_INDYCAM_V4L2_CONTROL_COUNT; i++) {
3741 if (vino_indycam_v4l2_controls[i].id == control->id) {
3742 err = 0;
3743 break;
3744 }
3745 }
3746 if (err)
3747 goto out;
3748 if (control->value < vino_indycam_v4l2_controls[i].minimum ||
3749 control->value > vino_indycam_v4l2_controls[i].maximum) {
3750 err = -ERANGE;
3751 goto out;
3752 }
3753 err = camera_call(core, s_ctrl, control);
3754 if (err)
3755 err = -EINVAL;
3756 break;
3757 }
3758 case VINO_INPUT_COMPOSITE:
3759 case VINO_INPUT_SVIDEO: {
3760 err = -EINVAL;
3761 for (i = 0; i < VINO_SAA7191_V4L2_CONTROL_COUNT; i++) {
3762 if (vino_saa7191_v4l2_controls[i].id == control->id) {
3763 err = 0;
3764 break;
3765 }
3766 }
3767 if (err)
3768 goto out;
3769 if (control->value < vino_saa7191_v4l2_controls[i].minimum ||
3770 control->value > vino_saa7191_v4l2_controls[i].maximum) {
3771 err = -ERANGE;
3772 goto out;
3773 }
3774
3775 err = decoder_call(core, s_ctrl, control);
3776 if (err)
3777 err = -EINVAL;
3778 break;
3779 }
3780 default:
3781 err = -EINVAL;
3782 }
3783
3784 out:
3785 spin_unlock_irqrestore(&vino_drvdata->input_lock, flags);
3786
3787 return err;
3788 }
3789
3790 /* File operations */
3791
3792 static int vino_open(struct file *file)
3793 {
3794 struct vino_channel_settings *vcs = video_drvdata(file);
3795 int ret = 0;
3796 dprintk("open(): channel = %c\n",
3797 (vcs->channel == VINO_CHANNEL_A) ? 'A' : 'B');
3798
3799 mutex_lock(&vcs->mutex);
3800
3801 if (vcs->users) {
3802 dprintk("open(): driver busy\n");
3803 ret = -EBUSY;
3804 goto out;
3805 }
3806
3807 ret = vino_acquire_input(vcs);
3808 if (ret) {
3809 dprintk("open(): vino_acquire_input() failed\n");
3810 goto out;
3811 }
3812
3813 vcs->users++;
3814
3815 out:
3816 mutex_unlock(&vcs->mutex);
3817
3818 dprintk("open(): %s!\n", ret ? "failed" : "complete");
3819
3820 return ret;
3821 }
3822
3823 static int vino_close(struct file *file)
3824 {
3825 struct vino_channel_settings *vcs = video_drvdata(file);
3826 dprintk("close():\n");
3827
3828 mutex_lock(&vcs->mutex);
3829
3830 vcs->users--;
3831
3832 if (!vcs->users) {
3833 vino_release_input(vcs);
3834
3835 /* stop DMA and free buffers */
3836 vino_capture_stop(vcs);
3837 vino_queue_free(&vcs->fb_queue);
3838 }
3839
3840 mutex_unlock(&vcs->mutex);
3841
3842 return 0;
3843 }
3844
3845 static void vino_vm_open(struct vm_area_struct *vma)
3846 {
3847 struct vino_framebuffer *fb = vma->vm_private_data;
3848
3849 fb->map_count++;
3850 dprintk("vino_vm_open(): count = %d\n", fb->map_count);
3851 }
3852
3853 static void vino_vm_close(struct vm_area_struct *vma)
3854 {
3855 struct vino_framebuffer *fb = vma->vm_private_data;
3856
3857 fb->map_count--;
3858 dprintk("vino_vm_close(): count = %d\n", fb->map_count);
3859 }
3860
3861 static const struct vm_operations_struct vino_vm_ops = {
3862 .open = vino_vm_open,
3863 .close = vino_vm_close,
3864 };
3865
3866 static int vino_mmap(struct file *file, struct vm_area_struct *vma)
3867 {
3868 struct vino_channel_settings *vcs = video_drvdata(file);
3869
3870 unsigned long start = vma->vm_start;
3871 unsigned long size = vma->vm_end - vma->vm_start;
3872 unsigned long offset = vma->vm_pgoff << PAGE_SHIFT;
3873
3874 struct vino_framebuffer *fb = NULL;
3875 unsigned int i, length;
3876 int ret = 0;
3877
3878 dprintk("mmap():\n");
3879
3880 // TODO: reject mmap if already mapped
3881
3882 if (mutex_lock_interruptible(&vcs->mutex))
3883 return -EINTR;
3884
3885 if (vcs->reading) {
3886 ret = -EBUSY;
3887 goto out;
3888 }
3889
3890 // TODO: check queue type
3891
3892 if (!(vma->vm_flags & VM_WRITE)) {
3893 dprintk("mmap(): app bug: PROT_WRITE please\n");
3894 ret = -EINVAL;
3895 goto out;
3896 }
3897 if (!(vma->vm_flags & VM_SHARED)) {
3898 dprintk("mmap(): app bug: MAP_SHARED please\n");
3899 ret = -EINVAL;
3900 goto out;
3901 }
3902
3903 /* find the correct buffer using offset */
3904 length = vino_queue_get_length(&vcs->fb_queue);
3905 if (length == 0) {
3906 dprintk("mmap(): queue not initialized\n");
3907 ret = -EINVAL;
3908 goto out;
3909 }
3910
3911 for (i = 0; i < length; i++) {
3912 fb = vino_queue_get_buffer(&vcs->fb_queue, i);
3913 if (fb == NULL) {
3914 dprintk("mmap(): vino_queue_get_buffer() failed\n");
3915 ret = -EINVAL;
3916 goto out;
3917 }
3918
3919 if (fb->offset == offset)
3920 goto found;
3921 }
3922
3923 dprintk("mmap(): invalid offset = %lu\n", offset);
3924 ret = -EINVAL;
3925 goto out;
3926
3927 found:
3928 dprintk("mmap(): buffer = %d\n", i);
3929
3930 if (size > (fb->desc_table.page_count * PAGE_SIZE)) {
3931 dprintk("mmap(): failed: size = %lu > %lu\n",
3932 size, fb->desc_table.page_count * PAGE_SIZE);
3933 ret = -EINVAL;
3934 goto out;
3935 }
3936
3937 for (i = 0; i < fb->desc_table.page_count; i++) {
3938 unsigned long pfn =
3939 virt_to_phys((void *)fb->desc_table.virtual[i]) >>
3940 PAGE_SHIFT;
3941
3942 if (size < PAGE_SIZE)
3943 break;
3944
3945 // protection was: PAGE_READONLY
3946 if (remap_pfn_range(vma, start, pfn, PAGE_SIZE,
3947 vma->vm_page_prot)) {
3948 dprintk("mmap(): remap_pfn_range() failed\n");
3949 ret = -EAGAIN;
3950 goto out;
3951 }
3952
3953 start += PAGE_SIZE;
3954 size -= PAGE_SIZE;
3955 }
3956
3957 fb->map_count = 1;
3958
3959 vma->vm_flags |= VM_DONTEXPAND | VM_RESERVED;
3960 vma->vm_flags &= ~VM_IO;
3961 vma->vm_private_data = fb;
3962 vma->vm_file = file;
3963 vma->vm_ops = &vino_vm_ops;
3964
3965 out:
3966 mutex_unlock(&vcs->mutex);
3967
3968 return ret;
3969 }
3970
3971 static unsigned int vino_poll(struct file *file, poll_table *pt)
3972 {
3973 struct vino_channel_settings *vcs = video_drvdata(file);
3974 unsigned int outgoing;
3975 unsigned int ret = 0;
3976
3977 // lock mutex (?)
3978 // TODO: this has to be corrected for different read modes
3979
3980 dprintk("poll():\n");
3981
3982 if (vino_queue_get_outgoing(&vcs->fb_queue, &outgoing)) {
3983 dprintk("poll(): vino_queue_get_outgoing() failed\n");
3984 ret = POLLERR;
3985 goto error;
3986 }
3987 if (outgoing > 0)
3988 goto over;
3989
3990 poll_wait(file, &vcs->fb_queue.frame_wait_queue, pt);
3991
3992 if (vino_queue_get_outgoing(&vcs->fb_queue, &outgoing)) {
3993 dprintk("poll(): vino_queue_get_outgoing() failed\n");
3994 ret = POLLERR;
3995 goto error;
3996 }
3997
3998 over:
3999 dprintk("poll(): data %savailable\n",
4000 (outgoing > 0) ? "" : "not ");
4001
4002 if (outgoing > 0)
4003 ret = POLLIN | POLLRDNORM;
4004
4005 error:
4006 return ret;
4007 }
4008
4009 static long vino_ioctl(struct file *file,
4010 unsigned int cmd, unsigned long arg)
4011 {
4012 struct vino_channel_settings *vcs = video_drvdata(file);
4013 long ret;
4014
4015 if (mutex_lock_interruptible(&vcs->mutex))
4016 return -EINTR;
4017
4018 ret = video_ioctl2(file, cmd, arg);
4019
4020 mutex_unlock(&vcs->mutex);
4021
4022 return ret;
4023 }
4024
4025 /* Initialization and cleanup */
4026
4027 /* __initdata */
4028 static int vino_init_stage;
4029
4030 const struct v4l2_ioctl_ops vino_ioctl_ops = {
4031 .vidioc_enum_fmt_vid_cap = vino_enum_fmt_vid_cap,
4032 .vidioc_g_fmt_vid_cap = vino_g_fmt_vid_cap,
4033 .vidioc_s_fmt_vid_cap = vino_s_fmt_vid_cap,
4034 .vidioc_try_fmt_vid_cap = vino_try_fmt_vid_cap,
4035 .vidioc_querycap = vino_querycap,
4036 .vidioc_enum_input = vino_enum_input,
4037 .vidioc_g_input = vino_g_input,
4038 .vidioc_s_input = vino_s_input,
4039 .vidioc_g_std = vino_g_std,
4040 .vidioc_s_std = vino_s_std,
4041 .vidioc_querystd = vino_querystd,
4042 .vidioc_cropcap = vino_cropcap,
4043 .vidioc_s_crop = vino_s_crop,
4044 .vidioc_g_crop = vino_g_crop,
4045 .vidioc_s_parm = vino_s_parm,
4046 .vidioc_g_parm = vino_g_parm,
4047 .vidioc_reqbufs = vino_reqbufs,
4048 .vidioc_querybuf = vino_querybuf,
4049 .vidioc_qbuf = vino_qbuf,
4050 .vidioc_dqbuf = vino_dqbuf,
4051 .vidioc_streamon = vino_streamon,
4052 .vidioc_streamoff = vino_streamoff,
4053 .vidioc_queryctrl = vino_queryctrl,
4054 .vidioc_g_ctrl = vino_g_ctrl,
4055 .vidioc_s_ctrl = vino_s_ctrl,
4056 };
4057
4058 static const struct v4l2_file_operations vino_fops = {
4059 .owner = THIS_MODULE,
4060 .open = vino_open,
4061 .release = vino_close,
4062 .unlocked_ioctl = vino_ioctl,
4063 .mmap = vino_mmap,
4064 .poll = vino_poll,
4065 };
4066
4067 static struct video_device vdev_template = {
4068 .name = "NOT SET",
4069 .fops = &vino_fops,
4070 .ioctl_ops = &vino_ioctl_ops,
4071 .tvnorms = V4L2_STD_NTSC | V4L2_STD_PAL | V4L2_STD_SECAM,
4072 };
4073
4074 static void vino_module_cleanup(int stage)
4075 {
4076 switch(stage) {
4077 case 11:
4078 video_unregister_device(vino_drvdata->b.vdev);
4079 vino_drvdata->b.vdev = NULL;
4080 case 10:
4081 video_unregister_device(vino_drvdata->a.vdev);
4082 vino_drvdata->a.vdev = NULL;
4083 case 9:
4084 i2c_del_adapter(&vino_i2c_adapter);
4085 case 8:
4086 free_irq(SGI_VINO_IRQ, NULL);
4087 case 7:
4088 if (vino_drvdata->b.vdev) {
4089 video_device_release(vino_drvdata->b.vdev);
4090 vino_drvdata->b.vdev = NULL;
4091 }
4092 case 6:
4093 if (vino_drvdata->a.vdev) {
4094 video_device_release(vino_drvdata->a.vdev);
4095 vino_drvdata->a.vdev = NULL;
4096 }
4097 case 5:
4098 /* all entries in dma_cpu dummy table have the same address */
4099 dma_unmap_single(NULL,
4100 vino_drvdata->dummy_desc_table.dma_cpu[0],
4101 PAGE_SIZE, DMA_FROM_DEVICE);
4102 dma_free_coherent(NULL, VINO_DUMMY_DESC_COUNT
4103 * sizeof(dma_addr_t),
4104 (void *)vino_drvdata->
4105 dummy_desc_table.dma_cpu,
4106 vino_drvdata->dummy_desc_table.dma);
4107 case 4:
4108 free_page(vino_drvdata->dummy_page);
4109 case 3:
4110 v4l2_device_unregister(&vino_drvdata->v4l2_dev);
4111 case 2:
4112 kfree(vino_drvdata);
4113 case 1:
4114 iounmap(vino);
4115 case 0:
4116 break;
4117 default:
4118 dprintk("vino_module_cleanup(): invalid cleanup stage = %d\n",
4119 stage);
4120 }
4121 }
4122
4123 static int vino_probe(void)
4124 {
4125 unsigned long rev_id;
4126
4127 if (ip22_is_fullhouse()) {
4128 printk(KERN_ERR "VINO doesn't exist in IP22 Fullhouse\n");
4129 return -ENODEV;
4130 }
4131
4132 if (!(sgimc->systemid & SGIMC_SYSID_EPRESENT)) {
4133 printk(KERN_ERR "VINO is not found (EISA BUS not present)\n");
4134 return -ENODEV;
4135 }
4136
4137 vino = (struct sgi_vino *)ioremap(VINO_BASE, sizeof(struct sgi_vino));
4138 if (!vino) {
4139 printk(KERN_ERR "VINO: ioremap() failed\n");
4140 return -EIO;
4141 }
4142 vino_init_stage++;
4143
4144 if (get_dbe(rev_id, &(vino->rev_id))) {
4145 printk(KERN_ERR "Failed to read VINO revision register\n");
4146 vino_module_cleanup(vino_init_stage);
4147 return -ENODEV;
4148 }
4149
4150 if (VINO_ID_VALUE(rev_id) != VINO_CHIP_ID) {
4151 printk(KERN_ERR "Unknown VINO chip ID (Rev/ID: 0x%02lx)\n",
4152 rev_id);
4153 vino_module_cleanup(vino_init_stage);
4154 return -ENODEV;
4155 }
4156
4157 printk(KERN_INFO "VINO revision %ld found\n", VINO_REV_NUM(rev_id));
4158
4159 return 0;
4160 }
4161
4162 static int vino_init(void)
4163 {
4164 dma_addr_t dma_dummy_address;
4165 int err;
4166 int i;
4167
4168 vino_drvdata = kzalloc(sizeof(struct vino_settings), GFP_KERNEL);
4169 if (!vino_drvdata) {
4170 vino_module_cleanup(vino_init_stage);
4171 return -ENOMEM;
4172 }
4173 vino_init_stage++;
4174 strlcpy(vino_drvdata->v4l2_dev.name, "vino",
4175 sizeof(vino_drvdata->v4l2_dev.name));
4176 err = v4l2_device_register(NULL, &vino_drvdata->v4l2_dev);
4177 if (err)
4178 return err;
4179 vino_init_stage++;
4180
4181 /* create a dummy dma descriptor */
4182 vino_drvdata->dummy_page = get_zeroed_page(GFP_KERNEL | GFP_DMA);
4183 if (!vino_drvdata->dummy_page) {
4184 vino_module_cleanup(vino_init_stage);
4185 return -ENOMEM;
4186 }
4187 vino_init_stage++;
4188
4189 // TODO: use page_count in dummy_desc_table
4190
4191 vino_drvdata->dummy_desc_table.dma_cpu =
4192 dma_alloc_coherent(NULL,
4193 VINO_DUMMY_DESC_COUNT * sizeof(dma_addr_t),
4194 &vino_drvdata->dummy_desc_table.dma,
4195 GFP_KERNEL | GFP_DMA);
4196 if (!vino_drvdata->dummy_desc_table.dma_cpu) {
4197 vino_module_cleanup(vino_init_stage);
4198 return -ENOMEM;
4199 }
4200 vino_init_stage++;
4201
4202 dma_dummy_address = dma_map_single(NULL,
4203 (void *)vino_drvdata->dummy_page,
4204 PAGE_SIZE, DMA_FROM_DEVICE);
4205 for (i = 0; i < VINO_DUMMY_DESC_COUNT; i++) {
4206 vino_drvdata->dummy_desc_table.dma_cpu[i] = dma_dummy_address;
4207 }
4208
4209 /* initialize VINO */
4210
4211 vino->control = 0;
4212 vino->a.next_4_desc = vino_drvdata->dummy_desc_table.dma;
4213 vino->b.next_4_desc = vino_drvdata->dummy_desc_table.dma;
4214 udelay(VINO_DESC_FETCH_DELAY);
4215
4216 vino->intr_status = 0;
4217
4218 vino->a.fifo_thres = VINO_FIFO_THRESHOLD_DEFAULT;
4219 vino->b.fifo_thres = VINO_FIFO_THRESHOLD_DEFAULT;
4220
4221 return 0;
4222 }
4223
4224 static int vino_init_channel_settings(struct vino_channel_settings *vcs,
4225 unsigned int channel, const char *name)
4226 {
4227 vcs->channel = channel;
4228 vcs->input = VINO_INPUT_NONE;
4229 vcs->alpha = 0;
4230 vcs->users = 0;
4231 vcs->data_format = VINO_DATA_FMT_GREY;
4232 vcs->data_norm = VINO_DATA_NORM_NTSC;
4233 vcs->decimation = 1;
4234 vino_set_default_clipping(vcs);
4235 vino_set_default_framerate(vcs);
4236
4237 vcs->capturing = 0;
4238
4239 mutex_init(&vcs->mutex);
4240 spin_lock_init(&vcs->capture_lock);
4241
4242 mutex_init(&vcs->fb_queue.queue_mutex);
4243 spin_lock_init(&vcs->fb_queue.queue_lock);
4244 init_waitqueue_head(&vcs->fb_queue.frame_wait_queue);
4245
4246 vcs->vdev = video_device_alloc();
4247 if (!vcs->vdev) {
4248 vino_module_cleanup(vino_init_stage);
4249 return -ENOMEM;
4250 }
4251 vino_init_stage++;
4252
4253 memcpy(vcs->vdev, &vdev_template,
4254 sizeof(struct video_device));
4255 strcpy(vcs->vdev->name, name);
4256 vcs->vdev->release = video_device_release;
4257 vcs->vdev->v4l2_dev = &vino_drvdata->v4l2_dev;
4258
4259 video_set_drvdata(vcs->vdev, vcs);
4260
4261 return 0;
4262 }
4263
4264 static int __init vino_module_init(void)
4265 {
4266 int ret;
4267
4268 printk(KERN_INFO "SGI VINO driver version %s\n",
4269 VINO_MODULE_VERSION);
4270
4271 ret = vino_probe();
4272 if (ret)
4273 return ret;
4274
4275 ret = vino_init();
4276 if (ret)
4277 return ret;
4278
4279 /* initialize data structures */
4280
4281 spin_lock_init(&vino_drvdata->vino_lock);
4282 spin_lock_init(&vino_drvdata->input_lock);
4283
4284 ret = vino_init_channel_settings(&vino_drvdata->a, VINO_CHANNEL_A,
4285 vino_vdev_name_a);
4286 if (ret)
4287 return ret;
4288
4289 ret = vino_init_channel_settings(&vino_drvdata->b, VINO_CHANNEL_B,
4290 vino_vdev_name_b);
4291 if (ret)
4292 return ret;
4293
4294 /* initialize hardware and register V4L devices */
4295
4296 ret = request_irq(SGI_VINO_IRQ, vino_interrupt, 0,
4297 vino_driver_description, NULL);
4298 if (ret) {
4299 printk(KERN_ERR "VINO: requesting IRQ %02d failed\n",
4300 SGI_VINO_IRQ);
4301 vino_module_cleanup(vino_init_stage);
4302 return -EAGAIN;
4303 }
4304 vino_init_stage++;
4305
4306 ret = i2c_add_adapter(&vino_i2c_adapter);
4307 if (ret) {
4308 printk(KERN_ERR "VINO I2C bus registration failed\n");
4309 vino_module_cleanup(vino_init_stage);
4310 return ret;
4311 }
4312 i2c_set_adapdata(&vino_i2c_adapter, &vino_drvdata->v4l2_dev);
4313 vino_init_stage++;
4314
4315 ret = video_register_device(vino_drvdata->a.vdev,
4316 VFL_TYPE_GRABBER, -1);
4317 if (ret < 0) {
4318 printk(KERN_ERR "VINO channel A Video4Linux-device "
4319 "registration failed\n");
4320 vino_module_cleanup(vino_init_stage);
4321 return -EINVAL;
4322 }
4323 vino_init_stage++;
4324
4325 ret = video_register_device(vino_drvdata->b.vdev,
4326 VFL_TYPE_GRABBER, -1);
4327 if (ret < 0) {
4328 printk(KERN_ERR "VINO channel B Video4Linux-device "
4329 "registration failed\n");
4330 vino_module_cleanup(vino_init_stage);
4331 return -EINVAL;
4332 }
4333 vino_init_stage++;
4334
4335 vino_drvdata->decoder =
4336 v4l2_i2c_new_subdev(&vino_drvdata->v4l2_dev, &vino_i2c_adapter,
4337 "saa7191", "saa7191", 0, I2C_ADDRS(0x45));
4338 vino_drvdata->camera =
4339 v4l2_i2c_new_subdev(&vino_drvdata->v4l2_dev, &vino_i2c_adapter,
4340 "indycam", "indycam", 0, I2C_ADDRS(0x2b));
4341
4342 dprintk("init complete!\n");
4343
4344 return 0;
4345 }
4346
4347 static void __exit vino_module_exit(void)
4348 {
4349 dprintk("exiting, stage = %d ...\n", vino_init_stage);
4350 vino_module_cleanup(vino_init_stage);
4351 dprintk("cleanup complete, exit!\n");
4352 }
4353
4354 module_init(vino_module_init);
4355 module_exit(vino_module_exit);
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