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powerpc: use consistent types in mktree
[zen-stable.git] / drivers / media / video / vino.c
blob97b082fe44736423bf2a2240abc962cfdb90f999
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/mm.h>
37 #include <linux/time.h>
38 #include <linux/version.h>
39 #include <linux/kmod.h>
40
41 #include <linux/i2c.h>
42
43 #include <linux/videodev2.h>
44 #include <media/v4l2-device.h>
45 #include <media/v4l2-ioctl.h>
46 #include <linux/mutex.h>
47
48 #include <asm/paccess.h>
49 #include <asm/io.h>
50 #include <asm/sgi/ip22.h>
51 #include <asm/sgi/mc.h>
52
53 #include "vino.h"
54 #include "saa7191.h"
55 #include "indycam.h"
56
57 /* Uncomment the following line to get lots and lots of (mostly useless)
58 * debug info.
59 * Note that the debug output also slows down the driver significantly */
60 // #define VINO_DEBUG
61 // #define VINO_DEBUG_INT
62
63 #define VINO_MODULE_VERSION "0.0.6"
64 #define VINO_VERSION_CODE KERNEL_VERSION(0, 0, 6)
65
66 MODULE_DESCRIPTION("SGI VINO Video4Linux2 driver");
67 MODULE_VERSION(VINO_MODULE_VERSION);
68 MODULE_AUTHOR("Mikael Nousiainen <tmnousia@cc.hut.fi>");
69 MODULE_LICENSE("GPL");
70
71 #ifdef VINO_DEBUG
72 #define dprintk(x...) printk("VINO: " x);
73 #else
74 #define dprintk(x...)
75 #endif
76
77 #define VINO_NO_CHANNEL 0
78 #define VINO_CHANNEL_A 1
79 #define VINO_CHANNEL_B 2
80
81 #define VINO_PAL_WIDTH 768
82 #define VINO_PAL_HEIGHT 576
83 #define VINO_NTSC_WIDTH 640
84 #define VINO_NTSC_HEIGHT 480
85
86 #define VINO_MIN_WIDTH 32
87 #define VINO_MIN_HEIGHT 32
88
89 #define VINO_CLIPPING_START_ODD_D1 1
90 #define VINO_CLIPPING_START_ODD_PAL 15
91 #define VINO_CLIPPING_START_ODD_NTSC 12
92
93 #define VINO_CLIPPING_START_EVEN_D1 2
94 #define VINO_CLIPPING_START_EVEN_PAL 15
95 #define VINO_CLIPPING_START_EVEN_NTSC 12
96
97 #define VINO_INPUT_CHANNEL_COUNT 3
98
99 /* the number is the index for vino_inputs */
100 #define VINO_INPUT_NONE -1
101 #define VINO_INPUT_COMPOSITE 0
102 #define VINO_INPUT_SVIDEO 1
103 #define VINO_INPUT_D1 2
104
105 #define VINO_PAGE_RATIO (PAGE_SIZE / VINO_PAGE_SIZE)
106
107 #define VINO_FIFO_THRESHOLD_DEFAULT 16
108
109 #define VINO_FRAMEBUFFER_SIZE ((VINO_PAL_WIDTH \
110 * VINO_PAL_HEIGHT * 4 \
111 + 3 * PAGE_SIZE) & ~(PAGE_SIZE - 1))
112
113 #define VINO_FRAMEBUFFER_COUNT_MAX 8
114
115 #define VINO_FRAMEBUFFER_UNUSED 0
116 #define VINO_FRAMEBUFFER_IN_USE 1
117 #define VINO_FRAMEBUFFER_READY 2
118
119 #define VINO_QUEUE_ERROR -1
120 #define VINO_QUEUE_MAGIC 0x20050125
121
122 #define VINO_MEMORY_NONE 0
123 #define VINO_MEMORY_MMAP 1
124 #define VINO_MEMORY_USERPTR 2
125
126 #define VINO_DUMMY_DESC_COUNT 4
127 #define VINO_DESC_FETCH_DELAY 5 /* microseconds */
128
129 #define VINO_MAX_FRAME_SKIP_COUNT 128
130
131 /* the number is the index for vino_data_formats */
132 #define VINO_DATA_FMT_NONE -1
133 #define VINO_DATA_FMT_GREY 0
134 #define VINO_DATA_FMT_RGB332 1
135 #define VINO_DATA_FMT_RGB32 2
136 #define VINO_DATA_FMT_YUV 3
137
138 #define VINO_DATA_FMT_COUNT 4
139
140 /* the number is the index for vino_data_norms */
141 #define VINO_DATA_NORM_NONE -1
142 #define VINO_DATA_NORM_NTSC 0
143 #define VINO_DATA_NORM_PAL 1
144 #define VINO_DATA_NORM_SECAM 2
145 #define VINO_DATA_NORM_D1 3
146
147 #define VINO_DATA_NORM_COUNT 4
148
149 /* I2C controller flags */
150 #define SGI_I2C_FORCE_IDLE (0 << 0)
151 #define SGI_I2C_NOT_IDLE (1 << 0)
152 #define SGI_I2C_WRITE (0 << 1)
153 #define SGI_I2C_READ (1 << 1)
154 #define SGI_I2C_RELEASE_BUS (0 << 2)
155 #define SGI_I2C_HOLD_BUS (1 << 2)
156 #define SGI_I2C_XFER_DONE (0 << 4)
157 #define SGI_I2C_XFER_BUSY (1 << 4)
158 #define SGI_I2C_ACK (0 << 5)
159 #define SGI_I2C_NACK (1 << 5)
160 #define SGI_I2C_BUS_OK (0 << 7)
161 #define SGI_I2C_BUS_ERR (1 << 7)
162
163 /* Internal data structure definitions */
164
165 struct vino_input {
166 char *name;
167 v4l2_std_id std;
168 };
169
170 struct vino_clipping {
171 unsigned int left, right, top, bottom;
172 };
173
174 struct vino_data_format {
175 /* the description */
176 char *description;
177 /* bytes per pixel */
178 unsigned int bpp;
179 /* V4L2 fourcc code */
180 __u32 pixelformat;
181 /* V4L2 colorspace (duh!) */
182 enum v4l2_colorspace colorspace;
183 };
184
185 struct vino_data_norm {
186 char *description;
187 unsigned int width, height;
188 struct vino_clipping odd;
189 struct vino_clipping even;
190
191 v4l2_std_id std;
192 unsigned int fps_min, fps_max;
193 __u32 framelines;
194 };
195
196 struct vino_descriptor_table {
197 /* the number of PAGE_SIZE sized pages in the buffer */
198 unsigned int page_count;
199 /* virtual (kmalloc'd) pointers to the actual data
200 * (in PAGE_SIZE chunks, used with mmap streaming) */
201 unsigned long *virtual;
202
203 /* cpu address for the VINO descriptor table
204 * (contains DMA addresses, VINO_PAGE_SIZE chunks) */
205 unsigned long *dma_cpu;
206 /* dma address for the VINO descriptor table
207 * (contains DMA addresses, VINO_PAGE_SIZE chunks) */
208 dma_addr_t dma;
209 };
210
211 struct vino_framebuffer {
212 /* identifier nubmer */
213 unsigned int id;
214 /* the length of the whole buffer */
215 unsigned int size;
216 /* the length of actual data in buffer */
217 unsigned int data_size;
218 /* the data format */
219 unsigned int data_format;
220 /* the state of buffer data */
221 unsigned int state;
222 /* is the buffer mapped in user space? */
223 unsigned int map_count;
224 /* memory offset for mmap() */
225 unsigned int offset;
226 /* frame counter */
227 unsigned int frame_counter;
228 /* timestamp (written when image capture finishes) */
229 struct timeval timestamp;
230
231 struct vino_descriptor_table desc_table;
232
233 spinlock_t state_lock;
234 };
235
236 struct vino_framebuffer_fifo {
237 unsigned int length;
238
239 unsigned int used;
240 unsigned int head;
241 unsigned int tail;
242
243 unsigned int data[VINO_FRAMEBUFFER_COUNT_MAX];
244 };
245
246 struct vino_framebuffer_queue {
247 unsigned int magic;
248
249 /* VINO_MEMORY_NONE, VINO_MEMORY_MMAP or VINO_MEMORY_USERPTR */
250 unsigned int type;
251 unsigned int length;
252
253 /* data field of in and out contain index numbers for buffer */
254 struct vino_framebuffer_fifo in;
255 struct vino_framebuffer_fifo out;
256
257 struct vino_framebuffer *buffer[VINO_FRAMEBUFFER_COUNT_MAX];
258
259 spinlock_t queue_lock;
260 struct mutex queue_mutex;
261 wait_queue_head_t frame_wait_queue;
262 };
263
264 struct vino_interrupt_data {
265 struct timeval timestamp;
266 unsigned int frame_counter;
267 unsigned int skip_count;
268 unsigned int skip;
269 };
270
271 struct vino_channel_settings {
272 unsigned int channel;
273
274 int input;
275 unsigned int data_format;
276 unsigned int data_norm;
277 struct vino_clipping clipping;
278 unsigned int decimation;
279 unsigned int line_size;
280 unsigned int alpha;
281 unsigned int fps;
282 unsigned int framert_reg;
283
284 unsigned int fifo_threshold;
285
286 struct vino_framebuffer_queue fb_queue;
287
288 /* number of the current field */
289 unsigned int field;
290
291 /* read in progress */
292 int reading;
293 /* streaming is active */
294 int streaming;
295 /* the driver is currently processing the queue */
296 int capturing;
297
298 struct mutex mutex;
299 spinlock_t capture_lock;
300
301 unsigned int users;
302
303 struct vino_interrupt_data int_data;
304
305 /* V4L support */
306 struct video_device *vdev;
307 };
308
309 struct vino_settings {
310 struct v4l2_device v4l2_dev;
311 struct vino_channel_settings a;
312 struct vino_channel_settings b;
313
314 /* the channel which owns this client:
315 * VINO_NO_CHANNEL, VINO_CHANNEL_A or VINO_CHANNEL_B */
316 unsigned int decoder_owner;
317 struct v4l2_subdev *decoder;
318 unsigned int camera_owner;
319 struct v4l2_subdev *camera;
320
321 /* a lock for vino register access */
322 spinlock_t vino_lock;
323 /* a lock for channel input changes */
324 spinlock_t input_lock;
325
326 unsigned long dummy_page;
327 struct vino_descriptor_table dummy_desc_table;
328 };
329
330 /* Module parameters */
331
332 /*
333 * Using vino_pixel_conversion the ABGR32-format pixels supplied
334 * by the VINO chip can be converted to more common formats
335 * like RGBA32 (or probably RGB24 in the future). This way we
336 * can give out data that can be specified correctly with
337 * the V4L2-definitions.
338 *
339 * The pixel format is specified as RGBA32 when no conversion
340 * is used.
341 *
342 * Note that this only affects the 32-bit bit depth.
343 *
344 * Use non-zero value to enable conversion.
345 */
346 static int vino_pixel_conversion;
347
348 module_param_named(pixelconv, vino_pixel_conversion, int, 0);
349
350 MODULE_PARM_DESC(pixelconv,
351 "enable pixel conversion (non-zero value enables)");
352
353 /* Internal data structures */
354
355 static struct sgi_vino *vino;
356
357 static struct vino_settings *vino_drvdata;
358
359 #define camera_call(o, f, args...) \
360 v4l2_subdev_call(vino_drvdata->camera, o, f, ##args)
361 #define decoder_call(o, f, args...) \
362 v4l2_subdev_call(vino_drvdata->decoder, o, f, ##args)
363
364 static const char *vino_driver_name = "vino";
365 static const char *vino_driver_description = "SGI VINO";
366 static const char *vino_bus_name = "GIO64 bus";
367 static const char *vino_vdev_name_a = "SGI VINO Channel A";
368 static const char *vino_vdev_name_b = "SGI VINO Channel B";
369
370 static void vino_capture_tasklet(unsigned long channel);
371
372 DECLARE_TASKLET(vino_tasklet_a, vino_capture_tasklet, VINO_CHANNEL_A);
373 DECLARE_TASKLET(vino_tasklet_b, vino_capture_tasklet, VINO_CHANNEL_B);
374
375 static const struct vino_input vino_inputs[] = {
376 {
377 .name = "Composite",
378 .std = V4L2_STD_NTSC | V4L2_STD_PAL
379 | V4L2_STD_SECAM,
380 }, {
381 .name = "S-Video",
382 .std = V4L2_STD_NTSC | V4L2_STD_PAL
383 | V4L2_STD_SECAM,
384 }, {
385 .name = "D1/IndyCam",
386 .std = V4L2_STD_NTSC,
387 }
388 };
389
390 static const struct vino_data_format vino_data_formats[] = {
391 {
392 .description = "8-bit greyscale",
393 .bpp = 1,
394 .pixelformat = V4L2_PIX_FMT_GREY,
395 .colorspace = V4L2_COLORSPACE_SMPTE170M,
396 }, {
397 .description = "8-bit dithered RGB 3-3-2",
398 .bpp = 1,
399 .pixelformat = V4L2_PIX_FMT_RGB332,
400 .colorspace = V4L2_COLORSPACE_SRGB,
401 }, {
402 .description = "32-bit RGB",
403 .bpp = 4,
404 .pixelformat = V4L2_PIX_FMT_RGB32,
405 .colorspace = V4L2_COLORSPACE_SRGB,
406 }, {
407 .description = "YUV 4:2:2",
408 .bpp = 2,
409 .pixelformat = V4L2_PIX_FMT_YUYV, // XXX: swapped?
410 .colorspace = V4L2_COLORSPACE_SMPTE170M,
411 }
412 };
413
414 static const struct vino_data_norm vino_data_norms[] = {
415 {
416 .description = "NTSC",
417 .std = V4L2_STD_NTSC,
418 .fps_min = 6,
419 .fps_max = 30,
420 .framelines = 525,
421 .width = VINO_NTSC_WIDTH,
422 .height = VINO_NTSC_HEIGHT,
423 .odd = {
424 .top = VINO_CLIPPING_START_ODD_NTSC,
425 .left = 0,
426 .bottom = VINO_CLIPPING_START_ODD_NTSC
427 + VINO_NTSC_HEIGHT / 2 - 1,
428 .right = VINO_NTSC_WIDTH,
429 },
430 .even = {
431 .top = VINO_CLIPPING_START_EVEN_NTSC,
432 .left = 0,
433 .bottom = VINO_CLIPPING_START_EVEN_NTSC
434 + VINO_NTSC_HEIGHT / 2 - 1,
435 .right = VINO_NTSC_WIDTH,
436 },
437 }, {
438 .description = "PAL",
439 .std = V4L2_STD_PAL,
440 .fps_min = 5,
441 .fps_max = 25,
442 .framelines = 625,
443 .width = VINO_PAL_WIDTH,
444 .height = VINO_PAL_HEIGHT,
445 .odd = {
446 .top = VINO_CLIPPING_START_ODD_PAL,
447 .left = 0,
448 .bottom = VINO_CLIPPING_START_ODD_PAL
449 + VINO_PAL_HEIGHT / 2 - 1,
450 .right = VINO_PAL_WIDTH,
451 },
452 .even = {
453 .top = VINO_CLIPPING_START_EVEN_PAL,
454 .left = 0,
455 .bottom = VINO_CLIPPING_START_EVEN_PAL
456 + VINO_PAL_HEIGHT / 2 - 1,
457 .right = VINO_PAL_WIDTH,
458 },
459 }, {
460 .description = "SECAM",
461 .std = V4L2_STD_SECAM,
462 .fps_min = 5,
463 .fps_max = 25,
464 .framelines = 625,
465 .width = VINO_PAL_WIDTH,
466 .height = VINO_PAL_HEIGHT,
467 .odd = {
468 .top = VINO_CLIPPING_START_ODD_PAL,
469 .left = 0,
470 .bottom = VINO_CLIPPING_START_ODD_PAL
471 + VINO_PAL_HEIGHT / 2 - 1,
472 .right = VINO_PAL_WIDTH,
473 },
474 .even = {
475 .top = VINO_CLIPPING_START_EVEN_PAL,
476 .left = 0,
477 .bottom = VINO_CLIPPING_START_EVEN_PAL
478 + VINO_PAL_HEIGHT / 2 - 1,
479 .right = VINO_PAL_WIDTH,
480 },
481 }, {
482 .description = "NTSC/D1",
483 .std = V4L2_STD_NTSC,
484 .fps_min = 6,
485 .fps_max = 30,
486 .framelines = 525,
487 .width = VINO_NTSC_WIDTH,
488 .height = VINO_NTSC_HEIGHT,
489 .odd = {
490 .top = VINO_CLIPPING_START_ODD_D1,
491 .left = 0,
492 .bottom = VINO_CLIPPING_START_ODD_D1
493 + VINO_NTSC_HEIGHT / 2 - 1,
494 .right = VINO_NTSC_WIDTH,
495 },
496 .even = {
497 .top = VINO_CLIPPING_START_EVEN_D1,
498 .left = 0,
499 .bottom = VINO_CLIPPING_START_EVEN_D1
500 + VINO_NTSC_HEIGHT / 2 - 1,
501 .right = VINO_NTSC_WIDTH,
502 },
503 }
504 };
505
506 #define VINO_INDYCAM_V4L2_CONTROL_COUNT 9
507
508 struct v4l2_queryctrl vino_indycam_v4l2_controls[] = {
509 {
510 .id = V4L2_CID_AUTOGAIN,
511 .type = V4L2_CTRL_TYPE_BOOLEAN,
512 .name = "Automatic Gain Control",
513 .minimum = 0,
514 .maximum = 1,
515 .step = 1,
516 .default_value = INDYCAM_AGC_DEFAULT,
517 }, {
518 .id = V4L2_CID_AUTO_WHITE_BALANCE,
519 .type = V4L2_CTRL_TYPE_BOOLEAN,
520 .name = "Automatic White Balance",
521 .minimum = 0,
522 .maximum = 1,
523 .step = 1,
524 .default_value = INDYCAM_AWB_DEFAULT,
525 }, {
526 .id = V4L2_CID_GAIN,
527 .type = V4L2_CTRL_TYPE_INTEGER,
528 .name = "Gain",
529 .minimum = INDYCAM_GAIN_MIN,
530 .maximum = INDYCAM_GAIN_MAX,
531 .step = 1,
532 .default_value = INDYCAM_GAIN_DEFAULT,
533 }, {
534 .id = INDYCAM_CONTROL_RED_SATURATION,
535 .type = V4L2_CTRL_TYPE_INTEGER,
536 .name = "Red Saturation",
537 .minimum = INDYCAM_RED_SATURATION_MIN,
538 .maximum = INDYCAM_RED_SATURATION_MAX,
539 .step = 1,
540 .default_value = INDYCAM_RED_SATURATION_DEFAULT,
541 }, {
542 .id = INDYCAM_CONTROL_BLUE_SATURATION,
543 .type = V4L2_CTRL_TYPE_INTEGER,
544 .name = "Blue Saturation",
545 .minimum = INDYCAM_BLUE_SATURATION_MIN,
546 .maximum = INDYCAM_BLUE_SATURATION_MAX,
547 .step = 1,
548 .default_value = INDYCAM_BLUE_SATURATION_DEFAULT,
549 }, {
550 .id = V4L2_CID_RED_BALANCE,
551 .type = V4L2_CTRL_TYPE_INTEGER,
552 .name = "Red Balance",
553 .minimum = INDYCAM_RED_BALANCE_MIN,
554 .maximum = INDYCAM_RED_BALANCE_MAX,
555 .step = 1,
556 .default_value = INDYCAM_RED_BALANCE_DEFAULT,
557 }, {
558 .id = V4L2_CID_BLUE_BALANCE,
559 .type = V4L2_CTRL_TYPE_INTEGER,
560 .name = "Blue Balance",
561 .minimum = INDYCAM_BLUE_BALANCE_MIN,
562 .maximum = INDYCAM_BLUE_BALANCE_MAX,
563 .step = 1,
564 .default_value = INDYCAM_BLUE_BALANCE_DEFAULT,
565 }, {
566 .id = V4L2_CID_EXPOSURE,
567 .type = V4L2_CTRL_TYPE_INTEGER,
568 .name = "Shutter Control",
569 .minimum = INDYCAM_SHUTTER_MIN,
570 .maximum = INDYCAM_SHUTTER_MAX,
571 .step = 1,
572 .default_value = INDYCAM_SHUTTER_DEFAULT,
573 }, {
574 .id = V4L2_CID_GAMMA,
575 .type = V4L2_CTRL_TYPE_INTEGER,
576 .name = "Gamma",
577 .minimum = INDYCAM_GAMMA_MIN,
578 .maximum = INDYCAM_GAMMA_MAX,
579 .step = 1,
580 .default_value = INDYCAM_GAMMA_DEFAULT,
581 }
582 };
583
584 #define VINO_SAA7191_V4L2_CONTROL_COUNT 9
585
586 struct v4l2_queryctrl vino_saa7191_v4l2_controls[] = {
587 {
588 .id = V4L2_CID_HUE,
589 .type = V4L2_CTRL_TYPE_INTEGER,
590 .name = "Hue",
591 .minimum = SAA7191_HUE_MIN,
592 .maximum = SAA7191_HUE_MAX,
593 .step = 1,
594 .default_value = SAA7191_HUE_DEFAULT,
595 }, {
596 .id = SAA7191_CONTROL_BANDPASS,
597 .type = V4L2_CTRL_TYPE_INTEGER,
598 .name = "Luminance Bandpass",
599 .minimum = SAA7191_BANDPASS_MIN,
600 .maximum = SAA7191_BANDPASS_MAX,
601 .step = 1,
602 .default_value = SAA7191_BANDPASS_DEFAULT,
603 }, {
604 .id = SAA7191_CONTROL_BANDPASS_WEIGHT,
605 .type = V4L2_CTRL_TYPE_INTEGER,
606 .name = "Luminance Bandpass Weight",
607 .minimum = SAA7191_BANDPASS_WEIGHT_MIN,
608 .maximum = SAA7191_BANDPASS_WEIGHT_MAX,
609 .step = 1,
610 .default_value = SAA7191_BANDPASS_WEIGHT_DEFAULT,
611 }, {
612 .id = SAA7191_CONTROL_CORING,
613 .type = V4L2_CTRL_TYPE_INTEGER,
614 .name = "HF Luminance Coring",
615 .minimum = SAA7191_CORING_MIN,
616 .maximum = SAA7191_CORING_MAX,
617 .step = 1,
618 .default_value = SAA7191_CORING_DEFAULT,
619 }, {
620 .id = SAA7191_CONTROL_FORCE_COLOUR,
621 .type = V4L2_CTRL_TYPE_BOOLEAN,
622 .name = "Force Colour",
623 .minimum = SAA7191_FORCE_COLOUR_MIN,
624 .maximum = SAA7191_FORCE_COLOUR_MAX,
625 .step = 1,
626 .default_value = SAA7191_FORCE_COLOUR_DEFAULT,
627 }, {
628 .id = SAA7191_CONTROL_CHROMA_GAIN,
629 .type = V4L2_CTRL_TYPE_INTEGER,
630 .name = "Chrominance Gain Control",
631 .minimum = SAA7191_CHROMA_GAIN_MIN,
632 .maximum = SAA7191_CHROMA_GAIN_MAX,
633 .step = 1,
634 .default_value = SAA7191_CHROMA_GAIN_DEFAULT,
635 }, {
636 .id = SAA7191_CONTROL_VTRC,
637 .type = V4L2_CTRL_TYPE_BOOLEAN,
638 .name = "VTR Time Constant",
639 .minimum = SAA7191_VTRC_MIN,
640 .maximum = SAA7191_VTRC_MAX,
641 .step = 1,
642 .default_value = SAA7191_VTRC_DEFAULT,
643 }, {
644 .id = SAA7191_CONTROL_LUMA_DELAY,
645 .type = V4L2_CTRL_TYPE_INTEGER,
646 .name = "Luminance Delay Compensation",
647 .minimum = SAA7191_LUMA_DELAY_MIN,
648 .maximum = SAA7191_LUMA_DELAY_MAX,
649 .step = 1,
650 .default_value = SAA7191_LUMA_DELAY_DEFAULT,
651 }, {
652 .id = SAA7191_CONTROL_VNR,
653 .type = V4L2_CTRL_TYPE_INTEGER,
654 .name = "Vertical Noise Reduction",
655 .minimum = SAA7191_VNR_MIN,
656 .maximum = SAA7191_VNR_MAX,
657 .step = 1,
658 .default_value = SAA7191_VNR_DEFAULT,
659 }
660 };
661
662 /* VINO framebuffer/DMA descriptor management */
663
664 static void vino_free_buffer_with_count(struct vino_framebuffer *fb,
665 unsigned int count)
666 {
667 unsigned int i;
668
669 dprintk("vino_free_buffer_with_count(): count = %d\n", count);
670
671 for (i = 0; i < count; i++) {
672 ClearPageReserved(virt_to_page((void *)fb->desc_table.virtual[i]));
673 dma_unmap_single(NULL,
674 fb->desc_table.dma_cpu[VINO_PAGE_RATIO * i],
675 PAGE_SIZE, DMA_FROM_DEVICE);
676 free_page(fb->desc_table.virtual[i]);
677 }
678
679 dma_free_coherent(NULL,
680 VINO_PAGE_RATIO * (fb->desc_table.page_count + 4) *
681 sizeof(dma_addr_t), (void *)fb->desc_table.dma_cpu,
682 fb->desc_table.dma);
683 kfree(fb->desc_table.virtual);
684
685 memset(fb, 0, sizeof(struct vino_framebuffer));
686 }
687
688 static void vino_free_buffer(struct vino_framebuffer *fb)
689 {
690 vino_free_buffer_with_count(fb, fb->desc_table.page_count);
691 }
692
693 static int vino_allocate_buffer(struct vino_framebuffer *fb,
694 unsigned int size)
695 {
696 unsigned int count, i, j;
697 int ret = 0;
698
699 dprintk("vino_allocate_buffer():\n");
700
701 if (size < 1)
702 return -EINVAL;
703
704 memset(fb, 0, sizeof(struct vino_framebuffer));
705
706 count = ((size / PAGE_SIZE) + 4) & ~3;
707
708 dprintk("vino_allocate_buffer(): size = %d, count = %d\n",
709 size, count);
710
711 /* allocate memory for table with virtual (page) addresses */
712 fb->desc_table.virtual = (unsigned long *)
713 kmalloc(count * sizeof(unsigned long), GFP_KERNEL);
714 if (!fb->desc_table.virtual)
715 return -ENOMEM;
716
717 /* allocate memory for table with dma addresses
718 * (has space for four extra descriptors) */
719 fb->desc_table.dma_cpu =
720 dma_alloc_coherent(NULL, VINO_PAGE_RATIO * (count + 4) *
721 sizeof(dma_addr_t), &fb->desc_table.dma,
722 GFP_KERNEL | GFP_DMA);
723 if (!fb->desc_table.dma_cpu) {
724 ret = -ENOMEM;
725 goto out_free_virtual;
726 }
727
728 /* allocate pages for the buffer and acquire the according
729 * dma addresses */
730 for (i = 0; i < count; i++) {
731 dma_addr_t dma_data_addr;
732
733 fb->desc_table.virtual[i] =
734 get_zeroed_page(GFP_KERNEL | GFP_DMA);
735 if (!fb->desc_table.virtual[i]) {
736 ret = -ENOBUFS;
737 break;
738 }
739
740 dma_data_addr =
741 dma_map_single(NULL,
742 (void *)fb->desc_table.virtual[i],
743 PAGE_SIZE, DMA_FROM_DEVICE);
744
745 for (j = 0; j < VINO_PAGE_RATIO; j++) {
746 fb->desc_table.dma_cpu[VINO_PAGE_RATIO * i + j] =
747 dma_data_addr + VINO_PAGE_SIZE * j;
748 }
749
750 SetPageReserved(virt_to_page((void *)fb->desc_table.virtual[i]));
751 }
752
753 /* page_count needs to be set anyway, because the descriptor table has
754 * been allocated according to this number */
755 fb->desc_table.page_count = count;
756
757 if (ret) {
758 /* the descriptor with index i doesn't contain
759 * a valid address yet */
760 vino_free_buffer_with_count(fb, i);
761 return ret;
762 }
763
764 //fb->size = size;
765 fb->size = count * PAGE_SIZE;
766 fb->data_format = VINO_DATA_FMT_NONE;
767
768 /* set the dma stop-bit for the last (count+1)th descriptor */
769 fb->desc_table.dma_cpu[VINO_PAGE_RATIO * count] = VINO_DESC_STOP;
770 return 0;
771
772 out_free_virtual:
773 kfree(fb->desc_table.virtual);
774 return ret;
775 }
776
777 #if 0
778 /* user buffers not fully implemented yet */
779 static int vino_prepare_user_buffer(struct vino_framebuffer *fb,
780 void *user,
781 unsigned int size)
782 {
783 unsigned int count, i, j;
784 int ret = 0;
785
786 dprintk("vino_prepare_user_buffer():\n");
787
788 if (size < 1)
789 return -EINVAL;
790
791 memset(fb, 0, sizeof(struct vino_framebuffer));
792
793 count = ((size / PAGE_SIZE)) & ~3;
794
795 dprintk("vino_prepare_user_buffer(): size = %d, count = %d\n",
796 size, count);
797
798 /* allocate memory for table with virtual (page) addresses */
799 fb->desc_table.virtual = (unsigned long *)
800 kmalloc(count * sizeof(unsigned long), GFP_KERNEL);
801 if (!fb->desc_table.virtual)
802 return -ENOMEM;
803
804 /* allocate memory for table with dma addresses
805 * (has space for four extra descriptors) */
806 fb->desc_table.dma_cpu =
807 dma_alloc_coherent(NULL, VINO_PAGE_RATIO * (count + 4) *
808 sizeof(dma_addr_t), &fb->desc_table.dma,
809 GFP_KERNEL | GFP_DMA);
810 if (!fb->desc_table.dma_cpu) {
811 ret = -ENOMEM;
812 goto out_free_virtual;
813 }
814
815 /* allocate pages for the buffer and acquire the according
816 * dma addresses */
817 for (i = 0; i < count; i++) {
818 dma_addr_t dma_data_addr;
819
820 fb->desc_table.virtual[i] =
821 get_zeroed_page(GFP_KERNEL | GFP_DMA);
822 if (!fb->desc_table.virtual[i]) {
823 ret = -ENOBUFS;
824 break;
825 }
826
827 dma_data_addr =
828 dma_map_single(NULL,
829 (void *)fb->desc_table.virtual[i],
830 PAGE_SIZE, DMA_FROM_DEVICE);
831
832 for (j = 0; j < VINO_PAGE_RATIO; j++) {
833 fb->desc_table.dma_cpu[VINO_PAGE_RATIO * i + j] =
834 dma_data_addr + VINO_PAGE_SIZE * j;
835 }
836
837 SetPageReserved(virt_to_page((void *)fb->desc_table.virtual[i]));
838 }
839
840 /* page_count needs to be set anyway, because the descriptor table has
841 * been allocated according to this number */
842 fb->desc_table.page_count = count;
843
844 if (ret) {
845 /* the descriptor with index i doesn't contain
846 * a valid address yet */
847 vino_free_buffer_with_count(fb, i);
848 return ret;
849 }
850
851 //fb->size = size;
852 fb->size = count * PAGE_SIZE;
853
854 /* set the dma stop-bit for the last (count+1)th descriptor */
855 fb->desc_table.dma_cpu[VINO_PAGE_RATIO * count] = VINO_DESC_STOP;
856 return 0;
857
858 out_free_virtual:
859 kfree(fb->desc_table.virtual);
860 return ret;
861 }
862 #endif
863
864 static void vino_sync_buffer(struct vino_framebuffer *fb)
865 {
866 int i;
867
868 dprintk("vino_sync_buffer():\n");
869
870 for (i = 0; i < fb->desc_table.page_count; i++)
871 dma_sync_single_for_cpu(NULL,
872 fb->desc_table.dma_cpu[VINO_PAGE_RATIO * i],
873 PAGE_SIZE, DMA_FROM_DEVICE);
874 }
875
876 /* Framebuffer fifo functions (need to be locked externally) */
877
878 static inline void vino_fifo_init(struct vino_framebuffer_fifo *f,
879 unsigned int length)
880 {
881 f->length = 0;
882 f->used = 0;
883 f->head = 0;
884 f->tail = 0;
885
886 if (length > VINO_FRAMEBUFFER_COUNT_MAX)
887 length = VINO_FRAMEBUFFER_COUNT_MAX;
888
889 f->length = length;
890 }
891
892 /* returns true/false */
893 static inline int vino_fifo_has_id(struct vino_framebuffer_fifo *f,
894 unsigned int id)
895 {
896 unsigned int i;
897
898 for (i = f->head; i == (f->tail - 1); i = (i + 1) % f->length) {
899 if (f->data[i] == id)
900 return 1;
901 }
902
903 return 0;
904 }
905
906 #if 0
907 /* returns true/false */
908 static inline int vino_fifo_full(struct vino_framebuffer_fifo *f)
909 {
910 return (f->used == f->length);
911 }
912 #endif
913
914 static inline unsigned int vino_fifo_get_used(struct vino_framebuffer_fifo *f)
915 {
916 return f->used;
917 }
918
919 static int vino_fifo_enqueue(struct vino_framebuffer_fifo *f, unsigned int id)
920 {
921 if (id >= f->length) {
922 return VINO_QUEUE_ERROR;
923 }
924
925 if (vino_fifo_has_id(f, id)) {
926 return VINO_QUEUE_ERROR;
927 }
928
929 if (f->used < f->length) {
930 f->data[f->tail] = id;
931 f->tail = (f->tail + 1) % f->length;
932 f->used++;
933 } else {
934 return VINO_QUEUE_ERROR;
935 }
936
937 return 0;
938 }
939
940 static int vino_fifo_peek(struct vino_framebuffer_fifo *f, unsigned int *id)
941 {
942 if (f->used > 0) {
943 *id = f->data[f->head];
944 } else {
945 return VINO_QUEUE_ERROR;
946 }
947
948 return 0;
949 }
950
951 static int vino_fifo_dequeue(struct vino_framebuffer_fifo *f, unsigned int *id)
952 {
953 if (f->used > 0) {
954 *id = f->data[f->head];
955 f->head = (f->head + 1) % f->length;
956 f->used--;
957 } else {
958 return VINO_QUEUE_ERROR;
959 }
960
961 return 0;
962 }
963
964 /* Framebuffer queue functions */
965
966 /* execute with queue_lock locked */
967 static void vino_queue_free_with_count(struct vino_framebuffer_queue *q,
968 unsigned int length)
969 {
970 unsigned int i;
971
972 q->length = 0;
973 memset(&q->in, 0, sizeof(struct vino_framebuffer_fifo));
974 memset(&q->out, 0, sizeof(struct vino_framebuffer_fifo));
975 for (i = 0; i < length; i++) {
976 dprintk("vino_queue_free_with_count(): freeing buffer %d\n",
977 i);
978 vino_free_buffer(q->buffer[i]);
979 kfree(q->buffer[i]);
980 }
981
982 q->type = VINO_MEMORY_NONE;
983 q->magic = 0;
984 }
985
986 static void vino_queue_free(struct vino_framebuffer_queue *q)
987 {
988 dprintk("vino_queue_free():\n");
989
990 if (q->magic != VINO_QUEUE_MAGIC)
991 return;
992 if (q->type != VINO_MEMORY_MMAP)
993 return;
994
995 mutex_lock(&q->queue_mutex);
996
997 vino_queue_free_with_count(q, q->length);
998
999 mutex_unlock(&q->queue_mutex);
1000 }
1001
1002 static int vino_queue_init(struct vino_framebuffer_queue *q,
1003 unsigned int *length)
1004 {
1005 unsigned int i;
1006 int ret = 0;
1007
1008 dprintk("vino_queue_init(): length = %d\n", *length);
1009
1010 if (q->magic == VINO_QUEUE_MAGIC) {
1011 dprintk("vino_queue_init(): queue already initialized!\n");
1012 return -EINVAL;
1013 }
1014
1015 if (q->type != VINO_MEMORY_NONE) {
1016 dprintk("vino_queue_init(): queue already initialized!\n");
1017 return -EINVAL;
1018 }
1019
1020 if (*length < 1)
1021 return -EINVAL;
1022
1023 mutex_lock(&q->queue_mutex);
1024
1025 if (*length > VINO_FRAMEBUFFER_COUNT_MAX)
1026 *length = VINO_FRAMEBUFFER_COUNT_MAX;
1027
1028 q->length = 0;
1029
1030 for (i = 0; i < *length; i++) {
1031 dprintk("vino_queue_init(): allocating buffer %d\n", i);
1032 q->buffer[i] = kmalloc(sizeof(struct vino_framebuffer),
1033 GFP_KERNEL);
1034 if (!q->buffer[i]) {
1035 dprintk("vino_queue_init(): kmalloc() failed\n");
1036 ret = -ENOMEM;
1037 break;
1038 }
1039
1040 ret = vino_allocate_buffer(q->buffer[i],
1041 VINO_FRAMEBUFFER_SIZE);
1042 if (ret) {
1043 kfree(q->buffer[i]);
1044 dprintk("vino_queue_init(): "
1045 "vino_allocate_buffer() failed\n");
1046 break;
1047 }
1048
1049 q->buffer[i]->id = i;
1050 if (i > 0) {
1051 q->buffer[i]->offset = q->buffer[i - 1]->offset +
1052 q->buffer[i - 1]->size;
1053 } else {
1054 q->buffer[i]->offset = 0;
1055 }
1056
1057 spin_lock_init(&q->buffer[i]->state_lock);
1058
1059 dprintk("vino_queue_init(): buffer = %d, offset = %d, "
1060 "size = %d\n", i, q->buffer[i]->offset,
1061 q->buffer[i]->size);
1062 }
1063
1064 if (ret) {
1065 vino_queue_free_with_count(q, i);
1066 *length = 0;
1067 } else {
1068 q->length = *length;
1069 vino_fifo_init(&q->in, q->length);
1070 vino_fifo_init(&q->out, q->length);
1071 q->type = VINO_MEMORY_MMAP;
1072 q->magic = VINO_QUEUE_MAGIC;
1073 }
1074
1075 mutex_unlock(&q->queue_mutex);
1076
1077 return ret;
1078 }
1079
1080 static struct vino_framebuffer *vino_queue_add(struct
1081 vino_framebuffer_queue *q,
1082 unsigned int id)
1083 {
1084 struct vino_framebuffer *ret = NULL;
1085 unsigned int total;
1086 unsigned long flags;
1087
1088 dprintk("vino_queue_add(): id = %d\n", id);
1089
1090 if (q->magic != VINO_QUEUE_MAGIC) {
1091 return ret;
1092 }
1093
1094 spin_lock_irqsave(&q->queue_lock, flags);
1095
1096 if (q->length == 0)
1097 goto out;
1098
1099 if (id >= q->length)
1100 goto out;
1101
1102 /* not needed?: if (vino_fifo_full(&q->out)) {
1103 goto out;
1104 }*/
1105 /* check that outgoing queue isn't already full
1106 * (or that it won't become full) */
1107 total = vino_fifo_get_used(&q->in) +
1108 vino_fifo_get_used(&q->out);
1109 if (total >= q->length)
1110 goto out;
1111
1112 if (vino_fifo_enqueue(&q->in, id))
1113 goto out;
1114
1115 ret = q->buffer[id];
1116
1117 out:
1118 spin_unlock_irqrestore(&q->queue_lock, flags);
1119
1120 return ret;
1121 }
1122
1123 static struct vino_framebuffer *vino_queue_transfer(struct
1124 vino_framebuffer_queue *q)
1125 {
1126 struct vino_framebuffer *ret = NULL;
1127 struct vino_framebuffer *fb;
1128 int id;
1129 unsigned long flags;
1130
1131 dprintk("vino_queue_transfer():\n");
1132
1133 if (q->magic != VINO_QUEUE_MAGIC) {
1134 return ret;
1135 }
1136
1137 spin_lock_irqsave(&q->queue_lock, flags);
1138
1139 if (q->length == 0)
1140 goto out;
1141
1142 // now this actually removes an entry from the incoming queue
1143 if (vino_fifo_dequeue(&q->in, &id)) {
1144 goto out;
1145 }
1146
1147 dprintk("vino_queue_transfer(): id = %d\n", id);
1148 fb = q->buffer[id];
1149
1150 // we have already checked that the outgoing queue is not full, but...
1151 if (vino_fifo_enqueue(&q->out, id)) {
1152 printk(KERN_ERR "vino_queue_transfer(): "
1153 "outgoing queue is full, this shouldn't happen!\n");
1154 goto out;
1155 }
1156
1157 ret = fb;
1158 out:
1159 spin_unlock_irqrestore(&q->queue_lock, flags);
1160
1161 return ret;
1162 }
1163
1164 /* returns true/false */
1165 static int vino_queue_incoming_contains(struct vino_framebuffer_queue *q,
1166 unsigned int id)
1167 {
1168 int ret = 0;
1169 unsigned long flags;
1170
1171 if (q->magic != VINO_QUEUE_MAGIC) {
1172 return ret;
1173 }
1174
1175 spin_lock_irqsave(&q->queue_lock, flags);
1176
1177 if (q->length == 0)
1178 goto out;
1179
1180 ret = vino_fifo_has_id(&q->in, id);
1181
1182 out:
1183 spin_unlock_irqrestore(&q->queue_lock, flags);
1184
1185 return ret;
1186 }
1187
1188 /* returns true/false */
1189 static int vino_queue_outgoing_contains(struct vino_framebuffer_queue *q,
1190 unsigned int id)
1191 {
1192 int ret = 0;
1193 unsigned long flags;
1194
1195 if (q->magic != VINO_QUEUE_MAGIC) {
1196 return ret;
1197 }
1198
1199 spin_lock_irqsave(&q->queue_lock, flags);
1200
1201 if (q->length == 0)
1202 goto out;
1203
1204 ret = vino_fifo_has_id(&q->out, id);
1205
1206 out:
1207 spin_unlock_irqrestore(&q->queue_lock, flags);
1208
1209 return ret;
1210 }
1211
1212 static int vino_queue_get_incoming(struct vino_framebuffer_queue *q,
1213 unsigned int *used)
1214 {
1215 int ret = 0;
1216 unsigned long flags;
1217
1218 if (q->magic != VINO_QUEUE_MAGIC) {
1219 return VINO_QUEUE_ERROR;
1220 }
1221
1222 spin_lock_irqsave(&q->queue_lock, flags);
1223
1224 if (q->length == 0) {
1225 ret = VINO_QUEUE_ERROR;
1226 goto out;
1227 }
1228
1229 *used = vino_fifo_get_used(&q->in);
1230
1231 out:
1232 spin_unlock_irqrestore(&q->queue_lock, flags);
1233
1234 return ret;
1235 }
1236
1237 static int vino_queue_get_outgoing(struct vino_framebuffer_queue *q,
1238 unsigned int *used)
1239 {
1240 int ret = 0;
1241 unsigned long flags;
1242
1243 if (q->magic != VINO_QUEUE_MAGIC) {
1244 return VINO_QUEUE_ERROR;
1245 }
1246
1247 spin_lock_irqsave(&q->queue_lock, flags);
1248
1249 if (q->length == 0) {
1250 ret = VINO_QUEUE_ERROR;
1251 goto out;
1252 }
1253
1254 *used = vino_fifo_get_used(&q->out);
1255
1256 out:
1257 spin_unlock_irqrestore(&q->queue_lock, flags);
1258
1259 return ret;
1260 }
1261
1262 #if 0
1263 static int vino_queue_get_total(struct vino_framebuffer_queue *q,
1264 unsigned int *total)
1265 {
1266 int ret = 0;
1267 unsigned long flags;
1268
1269 if (q->magic != VINO_QUEUE_MAGIC) {
1270 return VINO_QUEUE_ERROR;
1271 }
1272
1273 spin_lock_irqsave(&q->queue_lock, flags);
1274
1275 if (q->length == 0) {
1276 ret = VINO_QUEUE_ERROR;
1277 goto out;
1278 }
1279
1280 *total = vino_fifo_get_used(&q->in) +
1281 vino_fifo_get_used(&q->out);
1282
1283 out:
1284 spin_unlock_irqrestore(&q->queue_lock, flags);
1285
1286 return ret;
1287 }
1288 #endif
1289
1290 static struct vino_framebuffer *vino_queue_peek(struct
1291 vino_framebuffer_queue *q,
1292 unsigned int *id)
1293 {
1294 struct vino_framebuffer *ret = NULL;
1295 unsigned long flags;
1296
1297 if (q->magic != VINO_QUEUE_MAGIC) {
1298 return ret;
1299 }
1300
1301 spin_lock_irqsave(&q->queue_lock, flags);
1302
1303 if (q->length == 0)
1304 goto out;
1305
1306 if (vino_fifo_peek(&q->in, id)) {
1307 goto out;
1308 }
1309
1310 ret = q->buffer[*id];
1311 out:
1312 spin_unlock_irqrestore(&q->queue_lock, flags);
1313
1314 return ret;
1315 }
1316
1317 static struct vino_framebuffer *vino_queue_remove(struct
1318 vino_framebuffer_queue *q,
1319 unsigned int *id)
1320 {
1321 struct vino_framebuffer *ret = NULL;
1322 unsigned long flags;
1323 dprintk("vino_queue_remove():\n");
1324
1325 if (q->magic != VINO_QUEUE_MAGIC) {
1326 return ret;
1327 }
1328
1329 spin_lock_irqsave(&q->queue_lock, flags);
1330
1331 if (q->length == 0)
1332 goto out;
1333
1334 if (vino_fifo_dequeue(&q->out, id)) {
1335 goto out;
1336 }
1337
1338 dprintk("vino_queue_remove(): id = %d\n", *id);
1339 ret = q->buffer[*id];
1340 out:
1341 spin_unlock_irqrestore(&q->queue_lock, flags);
1342
1343 return ret;
1344 }
1345
1346 static struct
1347 vino_framebuffer *vino_queue_get_buffer(struct vino_framebuffer_queue *q,
1348 unsigned int id)
1349 {
1350 struct vino_framebuffer *ret = NULL;
1351 unsigned long flags;
1352
1353 if (q->magic != VINO_QUEUE_MAGIC) {
1354 return ret;
1355 }
1356
1357 spin_lock_irqsave(&q->queue_lock, flags);
1358
1359 if (q->length == 0)
1360 goto out;
1361
1362 if (id >= q->length)
1363 goto out;
1364
1365 ret = q->buffer[id];
1366 out:
1367 spin_unlock_irqrestore(&q->queue_lock, flags);
1368
1369 return ret;
1370 }
1371
1372 static unsigned int vino_queue_get_length(struct vino_framebuffer_queue *q)
1373 {
1374 unsigned int length = 0;
1375 unsigned long flags;
1376
1377 if (q->magic != VINO_QUEUE_MAGIC) {
1378 return length;
1379 }
1380
1381 spin_lock_irqsave(&q->queue_lock, flags);
1382 length = q->length;
1383 spin_unlock_irqrestore(&q->queue_lock, flags);
1384
1385 return length;
1386 }
1387
1388 static int vino_queue_has_mapped_buffers(struct vino_framebuffer_queue *q)
1389 {
1390 unsigned int i;
1391 int ret = 0;
1392 unsigned long flags;
1393
1394 if (q->magic != VINO_QUEUE_MAGIC) {
1395 return ret;
1396 }
1397
1398 spin_lock_irqsave(&q->queue_lock, flags);
1399 for (i = 0; i < q->length; i++) {
1400 if (q->buffer[i]->map_count > 0) {
1401 ret = 1;
1402 break;
1403 }
1404 }
1405 spin_unlock_irqrestore(&q->queue_lock, flags);
1406
1407 return ret;
1408 }
1409
1410 /* VINO functions */
1411
1412 /* execute with input_lock locked */
1413 static void vino_update_line_size(struct vino_channel_settings *vcs)
1414 {
1415 unsigned int w = vcs->clipping.right - vcs->clipping.left;
1416 unsigned int d = vcs->decimation;
1417 unsigned int bpp = vino_data_formats[vcs->data_format].bpp;
1418 unsigned int lsize;
1419
1420 dprintk("update_line_size(): before: w = %d, d = %d, "
1421 "line_size = %d\n", w, d, vcs->line_size);
1422
1423 /* line size must be multiple of 8 bytes */
1424 lsize = (bpp * (w / d)) & ~7;
1425 w = (lsize / bpp) * d;
1426
1427 vcs->clipping.right = vcs->clipping.left + w;
1428 vcs->line_size = lsize;
1429
1430 dprintk("update_line_size(): after: w = %d, d = %d, "
1431 "line_size = %d\n", w, d, vcs->line_size);
1432 }
1433
1434 /* execute with input_lock locked */
1435 static void vino_set_clipping(struct vino_channel_settings *vcs,
1436 unsigned int x, unsigned int y,
1437 unsigned int w, unsigned int h)
1438 {
1439 unsigned int maxwidth, maxheight;
1440 unsigned int d;
1441
1442 maxwidth = vino_data_norms[vcs->data_norm].width;
1443 maxheight = vino_data_norms[vcs->data_norm].height;
1444 d = vcs->decimation;
1445
1446 y &= ~1; /* odd/even fields */
1447
1448 if (x > maxwidth) {
1449 x = 0;
1450 }
1451 if (y > maxheight) {
1452 y = 0;
1453 }
1454
1455 if (((w / d) < VINO_MIN_WIDTH)
1456 || ((h / d) < VINO_MIN_HEIGHT)) {
1457 w = VINO_MIN_WIDTH * d;
1458 h = VINO_MIN_HEIGHT * d;
1459 }
1460
1461 if ((x + w) > maxwidth) {
1462 w = maxwidth - x;
1463 if ((w / d) < VINO_MIN_WIDTH)
1464 x = maxwidth - VINO_MIN_WIDTH * d;
1465 }
1466 if ((y + h) > maxheight) {
1467 h = maxheight - y;
1468 if ((h / d) < VINO_MIN_HEIGHT)
1469 y = maxheight - VINO_MIN_HEIGHT * d;
1470 }
1471
1472 vcs->clipping.left = x;
1473 vcs->clipping.top = y;
1474 vcs->clipping.right = x + w;
1475 vcs->clipping.bottom = y + h;
1476
1477 vino_update_line_size(vcs);
1478
1479 dprintk("clipping %d, %d, %d, %d / %d - %d\n",
1480 vcs->clipping.left, vcs->clipping.top, vcs->clipping.right,
1481 vcs->clipping.bottom, vcs->decimation, vcs->line_size);
1482 }
1483
1484 /* execute with input_lock locked */
1485 static inline void vino_set_default_clipping(struct vino_channel_settings *vcs)
1486 {
1487 vino_set_clipping(vcs, 0, 0, vino_data_norms[vcs->data_norm].width,
1488 vino_data_norms[vcs->data_norm].height);
1489 }
1490
1491 /* execute with input_lock locked */
1492 static void vino_set_scaling(struct vino_channel_settings *vcs,
1493 unsigned int w, unsigned int h)
1494 {
1495 unsigned int x, y, curw, curh, d;
1496
1497 x = vcs->clipping.left;
1498 y = vcs->clipping.top;
1499 curw = vcs->clipping.right - vcs->clipping.left;
1500 curh = vcs->clipping.bottom - vcs->clipping.top;
1501
1502 d = max(curw / w, curh / h);
1503
1504 dprintk("scaling w: %d, h: %d, curw: %d, curh: %d, d: %d\n",
1505 w, h, curw, curh, d);
1506
1507 if (d < 1) {
1508 d = 1;
1509 } else if (d > 8) {
1510 d = 8;
1511 }
1512
1513 vcs->decimation = d;
1514 vino_set_clipping(vcs, x, y, w * d, h * d);
1515
1516 dprintk("scaling %d, %d, %d, %d / %d - %d\n", vcs->clipping.left,
1517 vcs->clipping.top, vcs->clipping.right, vcs->clipping.bottom,
1518 vcs->decimation, vcs->line_size);
1519 }
1520
1521 /* execute with input_lock locked */
1522 static inline void vino_set_default_scaling(struct vino_channel_settings *vcs)
1523 {
1524 vino_set_scaling(vcs, vcs->clipping.right - vcs->clipping.left,
1525 vcs->clipping.bottom - vcs->clipping.top);
1526 }
1527
1528 /* execute with input_lock locked */
1529 static void vino_set_framerate(struct vino_channel_settings *vcs,
1530 unsigned int fps)
1531 {
1532 unsigned int mask;
1533
1534 switch (vcs->data_norm) {
1535 case VINO_DATA_NORM_NTSC:
1536 case VINO_DATA_NORM_D1:
1537 fps = (unsigned int)(fps / 6) * 6; // FIXME: round!
1538
1539 if (fps < vino_data_norms[vcs->data_norm].fps_min)
1540 fps = vino_data_norms[vcs->data_norm].fps_min;
1541 if (fps > vino_data_norms[vcs->data_norm].fps_max)
1542 fps = vino_data_norms[vcs->data_norm].fps_max;
1543
1544 switch (fps) {
1545 case 6:
1546 mask = 0x003;
1547 break;
1548 case 12:
1549 mask = 0x0c3;
1550 break;
1551 case 18:
1552 mask = 0x333;
1553 break;
1554 case 24:
1555 mask = 0x3ff;
1556 break;
1557 case 30:
1558 mask = 0xfff;
1559 break;
1560 default:
1561 mask = VINO_FRAMERT_FULL;
1562 }
1563 vcs->framert_reg = VINO_FRAMERT_RT(mask);
1564 break;
1565 case VINO_DATA_NORM_PAL:
1566 case VINO_DATA_NORM_SECAM:
1567 fps = (unsigned int)(fps / 5) * 5; // FIXME: round!
1568
1569 if (fps < vino_data_norms[vcs->data_norm].fps_min)
1570 fps = vino_data_norms[vcs->data_norm].fps_min;
1571 if (fps > vino_data_norms[vcs->data_norm].fps_max)
1572 fps = vino_data_norms[vcs->data_norm].fps_max;
1573
1574 switch (fps) {
1575 case 5:
1576 mask = 0x003;
1577 break;
1578 case 10:
1579 mask = 0x0c3;
1580 break;
1581 case 15:
1582 mask = 0x333;
1583 break;
1584 case 20:
1585 mask = 0x0ff;
1586 break;
1587 case 25:
1588 mask = 0x3ff;
1589 break;
1590 default:
1591 mask = VINO_FRAMERT_FULL;
1592 }
1593 vcs->framert_reg = VINO_FRAMERT_RT(mask) | VINO_FRAMERT_PAL;
1594 break;
1595 }
1596
1597 vcs->fps = fps;
1598 }
1599
1600 /* execute with input_lock locked */
1601 static inline void vino_set_default_framerate(struct
1602 vino_channel_settings *vcs)
1603 {
1604 vino_set_framerate(vcs, vino_data_norms[vcs->data_norm].fps_max);
1605 }
1606
1607 /* VINO I2C bus functions */
1608
1609 struct i2c_algo_sgi_data {
1610 void *data; /* private data for lowlevel routines */
1611 unsigned (*getctrl)(void *data);
1612 void (*setctrl)(void *data, unsigned val);
1613 unsigned (*rdata)(void *data);
1614 void (*wdata)(void *data, unsigned val);
1615
1616 int xfer_timeout;
1617 int ack_timeout;
1618 };
1619
1620 static int wait_xfer_done(struct i2c_algo_sgi_data *adap)
1621 {
1622 int i;
1623
1624 for (i = 0; i < adap->xfer_timeout; i++) {
1625 if ((adap->getctrl(adap->data) & SGI_I2C_XFER_BUSY) == 0)
1626 return 0;
1627 udelay(1);
1628 }
1629
1630 return -ETIMEDOUT;
1631 }
1632
1633 static int wait_ack(struct i2c_algo_sgi_data *adap)
1634 {
1635 int i;
1636
1637 if (wait_xfer_done(adap))
1638 return -ETIMEDOUT;
1639 for (i = 0; i < adap->ack_timeout; i++) {
1640 if ((adap->getctrl(adap->data) & SGI_I2C_NACK) == 0)
1641 return 0;
1642 udelay(1);
1643 }
1644
1645 return -ETIMEDOUT;
1646 }
1647
1648 static int force_idle(struct i2c_algo_sgi_data *adap)
1649 {
1650 int i;
1651
1652 adap->setctrl(adap->data, SGI_I2C_FORCE_IDLE);
1653 for (i = 0; i < adap->xfer_timeout; i++) {
1654 if ((adap->getctrl(adap->data) & SGI_I2C_NOT_IDLE) == 0)
1655 goto out;
1656 udelay(1);
1657 }
1658 return -ETIMEDOUT;
1659 out:
1660 if (adap->getctrl(adap->data) & SGI_I2C_BUS_ERR)
1661 return -EIO;
1662 return 0;
1663 }
1664
1665 static int do_address(struct i2c_algo_sgi_data *adap, unsigned int addr,
1666 int rd)
1667 {
1668 if (rd)
1669 adap->setctrl(adap->data, SGI_I2C_NOT_IDLE);
1670 /* Check if bus is idle, eventually force it to do so */
1671 if (adap->getctrl(adap->data) & SGI_I2C_NOT_IDLE)
1672 if (force_idle(adap))
1673 return -EIO;
1674 /* Write out the i2c chip address and specify operation */
1675 adap->setctrl(adap->data,
1676 SGI_I2C_HOLD_BUS | SGI_I2C_WRITE | SGI_I2C_NOT_IDLE);
1677 if (rd)
1678 addr |= 1;
1679 adap->wdata(adap->data, addr);
1680 if (wait_ack(adap))
1681 return -EIO;
1682 return 0;
1683 }
1684
1685 static int i2c_read(struct i2c_algo_sgi_data *adap, unsigned char *buf,
1686 unsigned int len)
1687 {
1688 int i;
1689
1690 adap->setctrl(adap->data,
1691 SGI_I2C_HOLD_BUS | SGI_I2C_READ | SGI_I2C_NOT_IDLE);
1692 for (i = 0; i < len; i++) {
1693 if (wait_xfer_done(adap))
1694 return -EIO;
1695 buf[i] = adap->rdata(adap->data);
1696 }
1697 adap->setctrl(adap->data, SGI_I2C_RELEASE_BUS | SGI_I2C_FORCE_IDLE);
1698
1699 return 0;
1700
1701 }
1702
1703 static int i2c_write(struct i2c_algo_sgi_data *adap, unsigned char *buf,
1704 unsigned int len)
1705 {
1706 int i;
1707
1708 /* We are already in write state */
1709 for (i = 0; i < len; i++) {
1710 adap->wdata(adap->data, buf[i]);
1711 if (wait_ack(adap))
1712 return -EIO;
1713 }
1714 return 0;
1715 }
1716
1717 static int sgi_xfer(struct i2c_adapter *i2c_adap, struct i2c_msg *msgs,
1718 int num)
1719 {
1720 struct i2c_algo_sgi_data *adap = i2c_adap->algo_data;
1721 struct i2c_msg *p;
1722 int i, err = 0;
1723
1724 for (i = 0; !err && i < num; i++) {
1725 p = &msgs[i];
1726 err = do_address(adap, p->addr, p->flags & I2C_M_RD);
1727 if (err || !p->len)
1728 continue;
1729 if (p->flags & I2C_M_RD)
1730 err = i2c_read(adap, p->buf, p->len);
1731 else
1732 err = i2c_write(adap, p->buf, p->len);
1733 }
1734
1735 return (err < 0) ? err : i;
1736 }
1737
1738 static u32 sgi_func(struct i2c_adapter *adap)
1739 {
1740 return I2C_FUNC_SMBUS_EMUL;
1741 }
1742
1743 static const struct i2c_algorithm sgi_algo = {
1744 .master_xfer = sgi_xfer,
1745 .functionality = sgi_func,
1746 };
1747
1748 static unsigned i2c_vino_getctrl(void *data)
1749 {
1750 return vino->i2c_control;
1751 }
1752
1753 static void i2c_vino_setctrl(void *data, unsigned val)
1754 {
1755 vino->i2c_control = val;
1756 }
1757
1758 static unsigned i2c_vino_rdata(void *data)
1759 {
1760 return vino->i2c_data;
1761 }
1762
1763 static void i2c_vino_wdata(void *data, unsigned val)
1764 {
1765 vino->i2c_data = val;
1766 }
1767
1768 static struct i2c_algo_sgi_data i2c_sgi_vino_data = {
1769 .getctrl = &i2c_vino_getctrl,
1770 .setctrl = &i2c_vino_setctrl,
1771 .rdata = &i2c_vino_rdata,
1772 .wdata = &i2c_vino_wdata,
1773 .xfer_timeout = 200,
1774 .ack_timeout = 1000,
1775 };
1776
1777 static struct i2c_adapter vino_i2c_adapter = {
1778 .name = "VINO I2C bus",
1779 .id = I2C_HW_SGI_VINO,
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 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 .minor = -1,
4073 };
4074
4075 static void vino_module_cleanup(int stage)
4076 {
4077 switch(stage) {
4078 case 11:
4079 video_unregister_device(vino_drvdata->b.vdev);
4080 vino_drvdata->b.vdev = NULL;
4081 case 10:
4082 video_unregister_device(vino_drvdata->a.vdev);
4083 vino_drvdata->a.vdev = NULL;
4084 case 9:
4085 i2c_del_adapter(&vino_i2c_adapter);
4086 case 8:
4087 free_irq(SGI_VINO_IRQ, NULL);
4088 case 7:
4089 if (vino_drvdata->b.vdev) {
4090 video_device_release(vino_drvdata->b.vdev);
4091 vino_drvdata->b.vdev = NULL;
4092 }
4093 case 6:
4094 if (vino_drvdata->a.vdev) {
4095 video_device_release(vino_drvdata->a.vdev);
4096 vino_drvdata->a.vdev = NULL;
4097 }
4098 case 5:
4099 /* all entries in dma_cpu dummy table have the same address */
4100 dma_unmap_single(NULL,
4101 vino_drvdata->dummy_desc_table.dma_cpu[0],
4102 PAGE_SIZE, DMA_FROM_DEVICE);
4103 dma_free_coherent(NULL, VINO_DUMMY_DESC_COUNT
4104 * sizeof(dma_addr_t),
4105 (void *)vino_drvdata->
4106 dummy_desc_table.dma_cpu,
4107 vino_drvdata->dummy_desc_table.dma);
4108 case 4:
4109 free_page(vino_drvdata->dummy_page);
4110 case 3:
4111 v4l2_device_unregister(&vino_drvdata->v4l2_dev);
4112 case 2:
4113 kfree(vino_drvdata);
4114 case 1:
4115 iounmap(vino);
4116 case 0:
4117 break;
4118 default:
4119 dprintk("vino_module_cleanup(): invalid cleanup stage = %d\n",
4120 stage);
4121 }
4122 }
4123
4124 static int vino_probe(void)
4125 {
4126 unsigned long rev_id;
4127
4128 if (ip22_is_fullhouse()) {
4129 printk(KERN_ERR "VINO doesn't exist in IP22 Fullhouse\n");
4130 return -ENODEV;
4131 }
4132
4133 if (!(sgimc->systemid & SGIMC_SYSID_EPRESENT)) {
4134 printk(KERN_ERR "VINO is not found (EISA BUS not present)\n");
4135 return -ENODEV;
4136 }
4137
4138 vino = (struct sgi_vino *)ioremap(VINO_BASE, sizeof(struct sgi_vino));
4139 if (!vino) {
4140 printk(KERN_ERR "VINO: ioremap() failed\n");
4141 return -EIO;
4142 }
4143 vino_init_stage++;
4144
4145 if (get_dbe(rev_id, &(vino->rev_id))) {
4146 printk(KERN_ERR "Failed to read VINO revision register\n");
4147 vino_module_cleanup(vino_init_stage);
4148 return -ENODEV;
4149 }
4150
4151 if (VINO_ID_VALUE(rev_id) != VINO_CHIP_ID) {
4152 printk(KERN_ERR "Unknown VINO chip ID (Rev/ID: 0x%02lx)\n",
4153 rev_id);
4154 vino_module_cleanup(vino_init_stage);
4155 return -ENODEV;
4156 }
4157
4158 printk(KERN_INFO "VINO revision %ld found\n", VINO_REV_NUM(rev_id));
4159
4160 return 0;
4161 }
4162
4163 static int vino_init(void)
4164 {
4165 dma_addr_t dma_dummy_address;
4166 int err;
4167 int i;
4168
4169 vino_drvdata = kzalloc(sizeof(struct vino_settings), GFP_KERNEL);
4170 if (!vino_drvdata) {
4171 vino_module_cleanup(vino_init_stage);
4172 return -ENOMEM;
4173 }
4174 vino_init_stage++;
4175 strlcpy(vino_drvdata->v4l2_dev.name, "vino",
4176 sizeof(vino_drvdata->v4l2_dev.name));
4177 err = v4l2_device_register(NULL, &vino_drvdata->v4l2_dev);
4178 if (err)
4179 return err;
4180 vino_init_stage++;
4181
4182 /* create a dummy dma descriptor */
4183 vino_drvdata->dummy_page = get_zeroed_page(GFP_KERNEL | GFP_DMA);
4184 if (!vino_drvdata->dummy_page) {
4185 vino_module_cleanup(vino_init_stage);
4186 return -ENOMEM;
4187 }
4188 vino_init_stage++;
4189
4190 // TODO: use page_count in dummy_desc_table
4191
4192 vino_drvdata->dummy_desc_table.dma_cpu =
4193 dma_alloc_coherent(NULL,
4194 VINO_DUMMY_DESC_COUNT * sizeof(dma_addr_t),
4195 &vino_drvdata->dummy_desc_table.dma,
4196 GFP_KERNEL | GFP_DMA);
4197 if (!vino_drvdata->dummy_desc_table.dma_cpu) {
4198 vino_module_cleanup(vino_init_stage);
4199 return -ENOMEM;
4200 }
4201 vino_init_stage++;
4202
4203 dma_dummy_address = dma_map_single(NULL,
4204 (void *)vino_drvdata->dummy_page,
4205 PAGE_SIZE, DMA_FROM_DEVICE);
4206 for (i = 0; i < VINO_DUMMY_DESC_COUNT; i++) {
4207 vino_drvdata->dummy_desc_table.dma_cpu[i] = dma_dummy_address;
4208 }
4209
4210 /* initialize VINO */
4211
4212 vino->control = 0;
4213 vino->a.next_4_desc = vino_drvdata->dummy_desc_table.dma;
4214 vino->b.next_4_desc = vino_drvdata->dummy_desc_table.dma;
4215 udelay(VINO_DESC_FETCH_DELAY);
4216
4217 vino->intr_status = 0;
4218
4219 vino->a.fifo_thres = VINO_FIFO_THRESHOLD_DEFAULT;
4220 vino->b.fifo_thres = VINO_FIFO_THRESHOLD_DEFAULT;
4221
4222 return 0;
4223 }
4224
4225 static int vino_init_channel_settings(struct vino_channel_settings *vcs,
4226 unsigned int channel, const char *name)
4227 {
4228 vcs->channel = channel;
4229 vcs->input = VINO_INPUT_NONE;
4230 vcs->alpha = 0;
4231 vcs->users = 0;
4232 vcs->data_format = VINO_DATA_FMT_GREY;
4233 vcs->data_norm = VINO_DATA_NORM_NTSC;
4234 vcs->decimation = 1;
4235 vino_set_default_clipping(vcs);
4236 vino_set_default_framerate(vcs);
4237
4238 vcs->capturing = 0;
4239
4240 mutex_init(&vcs->mutex);
4241 spin_lock_init(&vcs->capture_lock);
4242
4243 mutex_init(&vcs->fb_queue.queue_mutex);
4244 spin_lock_init(&vcs->fb_queue.queue_lock);
4245 init_waitqueue_head(&vcs->fb_queue.frame_wait_queue);
4246
4247 vcs->vdev = video_device_alloc();
4248 if (!vcs->vdev) {
4249 vino_module_cleanup(vino_init_stage);
4250 return -ENOMEM;
4251 }
4252 vino_init_stage++;
4253
4254 memcpy(vcs->vdev, &vdev_template,
4255 sizeof(struct video_device));
4256 strcpy(vcs->vdev->name, name);
4257 vcs->vdev->release = video_device_release;
4258 vcs->vdev->v4l2_dev = &vino_drvdata->v4l2_dev;
4259
4260 video_set_drvdata(vcs->vdev, vcs);
4261
4262 return 0;
4263 }
4264
4265 static int __init vino_module_init(void)
4266 {
4267 int ret;
4268
4269 printk(KERN_INFO "SGI VINO driver version %s\n",
4270 VINO_MODULE_VERSION);
4271
4272 ret = vino_probe();
4273 if (ret)
4274 return ret;
4275
4276 ret = vino_init();
4277 if (ret)
4278 return ret;
4279
4280 /* initialize data structures */
4281
4282 spin_lock_init(&vino_drvdata->vino_lock);
4283 spin_lock_init(&vino_drvdata->input_lock);
4284
4285 ret = vino_init_channel_settings(&vino_drvdata->a, VINO_CHANNEL_A,
4286 vino_vdev_name_a);
4287 if (ret)
4288 return ret;
4289
4290 ret = vino_init_channel_settings(&vino_drvdata->b, VINO_CHANNEL_B,
4291 vino_vdev_name_b);
4292 if (ret)
4293 return ret;
4294
4295 /* initialize hardware and register V4L devices */
4296
4297 ret = request_irq(SGI_VINO_IRQ, vino_interrupt, 0,
4298 vino_driver_description, NULL);
4299 if (ret) {
4300 printk(KERN_ERR "VINO: requesting IRQ %02d failed\n",
4301 SGI_VINO_IRQ);
4302 vino_module_cleanup(vino_init_stage);
4303 return -EAGAIN;
4304 }
4305 vino_init_stage++;
4306
4307 ret = i2c_add_adapter(&vino_i2c_adapter);
4308 if (ret) {
4309 printk(KERN_ERR "VINO I2C bus registration failed\n");
4310 vino_module_cleanup(vino_init_stage);
4311 return ret;
4312 }
4313 i2c_set_adapdata(&vino_i2c_adapter, &vino_drvdata->v4l2_dev);
4314 vino_init_stage++;
4315
4316 ret = video_register_device(vino_drvdata->a.vdev,
4317 VFL_TYPE_GRABBER, -1);
4318 if (ret < 0) {
4319 printk(KERN_ERR "VINO channel A Video4Linux-device "
4320 "registration failed\n");
4321 vino_module_cleanup(vino_init_stage);
4322 return -EINVAL;
4323 }
4324 vino_init_stage++;
4325
4326 ret = video_register_device(vino_drvdata->b.vdev,
4327 VFL_TYPE_GRABBER, -1);
4328 if (ret < 0) {
4329 printk(KERN_ERR "VINO channel B Video4Linux-device "
4330 "registration failed\n");
4331 vino_module_cleanup(vino_init_stage);
4332 return -EINVAL;
4333 }
4334 vino_init_stage++;
4335
4336 vino_drvdata->decoder =
4337 v4l2_i2c_new_probed_subdev_addr(&vino_drvdata->v4l2_dev,
4338 &vino_i2c_adapter, "saa7191", "saa7191", 0x45);
4339 vino_drvdata->camera =
4340 v4l2_i2c_new_probed_subdev_addr(&vino_drvdata->v4l2_dev,
4341 &vino_i2c_adapter, "indycam", "indycam", 0x2b);
4342
4343 dprintk("init complete!\n");
4344
4345 return 0;
4346 }
4347
4348 static void __exit vino_module_exit(void)
4349 {
4350 dprintk("exiting, stage = %d ...\n", vino_init_stage);
4351 vino_module_cleanup(vino_init_stage);
4352 dprintk("cleanup complete, exit!\n");
4353 }
4354
4355 module_init(vino_module_init);
4356 module_exit(vino_module_exit);