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V4L/DVB (4854): Handle errors from input_register_device()
[linux-2.6/linux-loongson.git] / drivers / media / video / vino.c
blob6b6dff4d236a39e3093e9961de46e380d5eef70d
1 /*
2 * Driver for the VINO (Video In No Out) system found in SGI Indys.
3 *
4 * This file is subject to the terms and conditions of the GNU General Public
5 * License version 2 as published by the Free Software Foundation.
6 *
7 * Copyright (C) 2004,2005 Mikael Nousiainen <tmnousia@cc.hut.fi>
8 *
9 * Based on the previous version of the driver for 2.4 kernels by:
10 * Copyright (C) 2003 Ladislav Michl <ladis@linux-mips.org>
11 */
12
13 /*
14 * TODO:
15 * - remove "mark pages reserved-hacks" from memory allocation code
16 * and implement nopage()
17 * - check decimation, calculating and reporting image size when
18 * using decimation
19 * - implement read(), user mode buffers and overlay (?)
20 */
21
22 #include <linux/init.h>
23 #include <linux/module.h>
24 #include <linux/delay.h>
25 #include <linux/dma-mapping.h>
26 #include <linux/errno.h>
27 #include <linux/fs.h>
28 #include <linux/interrupt.h>
29 #include <linux/kernel.h>
30 #include <linux/mm.h>
31 #include <linux/moduleparam.h>
32 #include <linux/time.h>
33 #include <linux/version.h>
34
35 #ifdef CONFIG_KMOD
36 #include <linux/kmod.h>
37 #endif
38
39 #include <linux/i2c.h>
40 #include <linux/i2c-algo-sgi.h>
41
42 #include <linux/videodev.h>
43 #include <media/v4l2-common.h>
44 #include <linux/video_decoder.h>
45 #include <linux/mutex.h>
46
47 #include <asm/paccess.h>
48 #include <asm/io.h>
49 #include <asm/sgi/ip22.h>
50 #include <asm/sgi/mc.h>
51
52 #include "vino.h"
53 #include "saa7191.h"
54 #include "indycam.h"
55
56 /* Uncomment the following line to get lots and lots of (mostly useless)
57 * debug info.
58 * Note that the debug output also slows down the driver significantly */
59 // #define VINO_DEBUG
60 // #define VINO_DEBUG_INT
61
62 #define VINO_MODULE_VERSION "0.0.5"
63 #define VINO_VERSION_CODE KERNEL_VERSION(0, 0, 5)
64
65 MODULE_DESCRIPTION("SGI VINO Video4Linux2 driver");
66 MODULE_VERSION(VINO_MODULE_VERSION);
67 MODULE_AUTHOR("Mikael Nousiainen <tmnousia@cc.hut.fi>");
68 MODULE_LICENSE("GPL");
69
70 #ifdef VINO_DEBUG
71 #define dprintk(x...) printk("VINO: " x);
72 #else
73 #define dprintk(x...)
74 #endif
75
76 #define VINO_NO_CHANNEL 0
77 #define VINO_CHANNEL_A 1
78 #define VINO_CHANNEL_B 2
79
80 #define VINO_PAL_WIDTH 768
81 #define VINO_PAL_HEIGHT 576
82 #define VINO_NTSC_WIDTH 640
83 #define VINO_NTSC_HEIGHT 480
84
85 #define VINO_MIN_WIDTH 32
86 #define VINO_MIN_HEIGHT 32
87
88 #define VINO_CLIPPING_START_ODD_D1 1
89 #define VINO_CLIPPING_START_ODD_PAL 15
90 #define VINO_CLIPPING_START_ODD_NTSC 12
91
92 #define VINO_CLIPPING_START_EVEN_D1 2
93 #define VINO_CLIPPING_START_EVEN_PAL 15
94 #define VINO_CLIPPING_START_EVEN_NTSC 12
95
96 #define VINO_INPUT_CHANNEL_COUNT 3
97
98 /* the number is the index for vino_inputs */
99 #define VINO_INPUT_NONE -1
100 #define VINO_INPUT_COMPOSITE 0
101 #define VINO_INPUT_SVIDEO 1
102 #define VINO_INPUT_D1 2
103
104 #define VINO_PAGE_RATIO (PAGE_SIZE / VINO_PAGE_SIZE)
105
106 #define VINO_FIFO_THRESHOLD_DEFAULT 16
107
108 #define VINO_FRAMEBUFFER_SIZE ((VINO_PAL_WIDTH \
109 * VINO_PAL_HEIGHT * 4 \
110 + 3 * PAGE_SIZE) & ~(PAGE_SIZE - 1))
111
112 #define VINO_FRAMEBUFFER_COUNT_MAX 8
113
114 #define VINO_FRAMEBUFFER_UNUSED 0
115 #define VINO_FRAMEBUFFER_IN_USE 1
116 #define VINO_FRAMEBUFFER_READY 2
117
118 #define VINO_QUEUE_ERROR -1
119 #define VINO_QUEUE_MAGIC 0x20050125
120
121 #define VINO_MEMORY_NONE 0
122 #define VINO_MEMORY_MMAP 1
123 #define VINO_MEMORY_USERPTR 2
124
125 #define VINO_DUMMY_DESC_COUNT 4
126 #define VINO_DESC_FETCH_DELAY 5 /* microseconds */
127
128 #define VINO_MAX_FRAME_SKIP_COUNT 128
129
130 /* the number is the index for vino_data_formats */
131 #define VINO_DATA_FMT_NONE -1
132 #define VINO_DATA_FMT_GREY 0
133 #define VINO_DATA_FMT_RGB332 1
134 #define VINO_DATA_FMT_RGB32 2
135 #define VINO_DATA_FMT_YUV 3
136
137 #define VINO_DATA_FMT_COUNT 4
138
139 /* the number is the index for vino_data_norms */
140 #define VINO_DATA_NORM_NONE -1
141 #define VINO_DATA_NORM_NTSC 0
142 #define VINO_DATA_NORM_PAL 1
143 #define VINO_DATA_NORM_SECAM 2
144 #define VINO_DATA_NORM_D1 3
145 /* The following are special entries that can be used to
146 * autodetect the norm. */
147 #define VINO_DATA_NORM_AUTO 0xfe
148 #define VINO_DATA_NORM_AUTO_EXT 0xff
149
150 #define VINO_DATA_NORM_COUNT 4
151
152 /* Internal data structure definitions */
153
154 struct vino_input {
155 char *name;
156 v4l2_std_id std;
157 };
158
159 struct vino_clipping {
160 unsigned int left, right, top, bottom;
161 };
162
163 struct vino_data_format {
164 /* the description */
165 char *description;
166 /* bytes per pixel */
167 unsigned int bpp;
168 /* V4L2 fourcc code */
169 __u32 pixelformat;
170 /* V4L2 colorspace (duh!) */
171 enum v4l2_colorspace colorspace;
172 };
173
174 struct vino_data_norm {
175 char *description;
176 unsigned int width, height;
177 struct vino_clipping odd;
178 struct vino_clipping even;
179
180 v4l2_std_id std;
181 unsigned int fps_min, fps_max;
182 __u32 framelines;
183 };
184
185 struct vino_descriptor_table {
186 /* the number of PAGE_SIZE sized pages in the buffer */
187 unsigned int page_count;
188 /* virtual (kmalloc'd) pointers to the actual data
189 * (in PAGE_SIZE chunks, used with mmap streaming) */
190 unsigned long *virtual;
191
192 /* cpu address for the VINO descriptor table
193 * (contains DMA addresses, VINO_PAGE_SIZE chunks) */
194 unsigned long *dma_cpu;
195 /* dma address for the VINO descriptor table
196 * (contains DMA addresses, VINO_PAGE_SIZE chunks) */
197 dma_addr_t dma;
198 };
199
200 struct vino_framebuffer {
201 /* identifier nubmer */
202 unsigned int id;
203 /* the length of the whole buffer */
204 unsigned int size;
205 /* the length of actual data in buffer */
206 unsigned int data_size;
207 /* the data format */
208 unsigned int data_format;
209 /* the state of buffer data */
210 unsigned int state;
211 /* is the buffer mapped in user space? */
212 unsigned int map_count;
213 /* memory offset for mmap() */
214 unsigned int offset;
215 /* frame counter */
216 unsigned int frame_counter;
217 /* timestamp (written when image capture finishes) */
218 struct timeval timestamp;
219
220 struct vino_descriptor_table desc_table;
221
222 spinlock_t state_lock;
223 };
224
225 struct vino_framebuffer_fifo {
226 unsigned int length;
227
228 unsigned int used;
229 unsigned int head;
230 unsigned int tail;
231
232 unsigned int data[VINO_FRAMEBUFFER_COUNT_MAX];
233 };
234
235 struct vino_framebuffer_queue {
236 unsigned int magic;
237
238 /* VINO_MEMORY_NONE, VINO_MEMORY_MMAP or VINO_MEMORY_USERPTR */
239 unsigned int type;
240 unsigned int length;
241
242 /* data field of in and out contain index numbers for buffer */
243 struct vino_framebuffer_fifo in;
244 struct vino_framebuffer_fifo out;
245
246 struct vino_framebuffer *buffer[VINO_FRAMEBUFFER_COUNT_MAX];
247
248 spinlock_t queue_lock;
249 struct mutex queue_mutex;
250 wait_queue_head_t frame_wait_queue;
251 };
252
253 struct vino_interrupt_data {
254 struct timeval timestamp;
255 unsigned int frame_counter;
256 unsigned int skip_count;
257 unsigned int skip;
258 };
259
260 struct vino_channel_settings {
261 unsigned int channel;
262
263 int input;
264 unsigned int data_format;
265 unsigned int data_norm;
266 struct vino_clipping clipping;
267 unsigned int decimation;
268 unsigned int line_size;
269 unsigned int alpha;
270 unsigned int fps;
271 unsigned int framert_reg;
272
273 unsigned int fifo_threshold;
274
275 struct vino_framebuffer_queue fb_queue;
276
277 /* number of the current field */
278 unsigned int field;
279
280 /* read in progress */
281 int reading;
282 /* streaming is active */
283 int streaming;
284 /* the driver is currently processing the queue */
285 int capturing;
286
287 struct mutex mutex;
288 spinlock_t capture_lock;
289
290 unsigned int users;
291
292 struct vino_interrupt_data int_data;
293
294 /* V4L support */
295 struct video_device *v4l_device;
296 };
297
298 struct vino_client {
299 /* the channel which owns this client:
300 * VINO_NO_CHANNEL, VINO_CHANNEL_A or VINO_CHANNEL_B */
301 unsigned int owner;
302 struct i2c_client *driver;
303 };
304
305 struct vino_settings {
306 struct vino_channel_settings a;
307 struct vino_channel_settings b;
308
309 struct vino_client decoder;
310 struct vino_client camera;
311
312 /* a lock for vino register access */
313 spinlock_t vino_lock;
314 /* a lock for channel input changes */
315 spinlock_t input_lock;
316
317 unsigned long dummy_page;
318 struct vino_descriptor_table dummy_desc_table;
319 };
320
321 /* Module parameters */
322
323 /*
324 * Using vino_pixel_conversion the ABGR32-format pixels supplied
325 * by the VINO chip can be converted to more common formats
326 * like RGBA32 (or probably RGB24 in the future). This way we
327 * can give out data that can be specified correctly with
328 * the V4L2-definitions.
329 *
330 * The pixel format is specified as RGBA32 when no conversion
331 * is used.
332 *
333 * Note that this only affects the 32-bit bit depth.
334 *
335 * Use non-zero value to enable conversion.
336 */
337 static int vino_pixel_conversion = 0;
338
339 module_param_named(pixelconv, vino_pixel_conversion, int, 0);
340
341 MODULE_PARM_DESC(pixelconv,
342 "enable pixel conversion (non-zero value enables)");
343
344 /* Internal data structures */
345
346 static struct sgi_vino *vino;
347
348 static struct vino_settings *vino_drvdata;
349
350 static const char *vino_driver_name = "vino";
351 static const char *vino_driver_description = "SGI VINO";
352 static const char *vino_bus_name = "GIO64 bus";
353 static const char *vino_v4l_device_name_a = "SGI VINO Channel A";
354 static const char *vino_v4l_device_name_b = "SGI VINO Channel B";
355
356 static void vino_capture_tasklet(unsigned long channel);
357
358 DECLARE_TASKLET(vino_tasklet_a, vino_capture_tasklet, VINO_CHANNEL_A);
359 DECLARE_TASKLET(vino_tasklet_b, vino_capture_tasklet, VINO_CHANNEL_B);
360
361 static const struct vino_input vino_inputs[] = {
362 {
363 .name = "Composite",
364 .std = V4L2_STD_NTSC | V4L2_STD_PAL
365 | V4L2_STD_SECAM,
366 },{
367 .name = "S-Video",
368 .std = V4L2_STD_NTSC | V4L2_STD_PAL
369 | V4L2_STD_SECAM,
370 },{
371 .name = "D1/IndyCam",
372 .std = V4L2_STD_NTSC,
373 }
374 };
375
376 static const struct vino_data_format vino_data_formats[] = {
377 {
378 .description = "8-bit greyscale",
379 .bpp = 1,
380 .pixelformat = V4L2_PIX_FMT_GREY,
381 .colorspace = V4L2_COLORSPACE_SMPTE170M,
382 },{
383 .description = "8-bit dithered RGB 3-3-2",
384 .bpp = 1,
385 .pixelformat = V4L2_PIX_FMT_RGB332,
386 .colorspace = V4L2_COLORSPACE_SRGB,
387 },{
388 .description = "32-bit RGB",
389 .bpp = 4,
390 .pixelformat = V4L2_PIX_FMT_RGB32,
391 .colorspace = V4L2_COLORSPACE_SRGB,
392 },{
393 .description = "YUV 4:2:2",
394 .bpp = 2,
395 .pixelformat = V4L2_PIX_FMT_YUYV, // XXX: swapped?
396 .colorspace = V4L2_COLORSPACE_SMPTE170M,
397 }
398 };
399
400 static const struct vino_data_norm vino_data_norms[] = {
401 {
402 .description = "NTSC",
403 .std = V4L2_STD_NTSC,
404 .fps_min = 6,
405 .fps_max = 30,
406 .framelines = 525,
407 .width = VINO_NTSC_WIDTH,
408 .height = VINO_NTSC_HEIGHT,
409 .odd = {
410 .top = VINO_CLIPPING_START_ODD_NTSC,
411 .left = 0,
412 .bottom = VINO_CLIPPING_START_ODD_NTSC
413 + VINO_NTSC_HEIGHT / 2 - 1,
414 .right = VINO_NTSC_WIDTH,
415 },
416 .even = {
417 .top = VINO_CLIPPING_START_EVEN_NTSC,
418 .left = 0,
419 .bottom = VINO_CLIPPING_START_EVEN_NTSC
420 + VINO_NTSC_HEIGHT / 2 - 1,
421 .right = VINO_NTSC_WIDTH,
422 },
423 },{
424 .description = "PAL",
425 .std = V4L2_STD_PAL,
426 .fps_min = 5,
427 .fps_max = 25,
428 .framelines = 625,
429 .width = VINO_PAL_WIDTH,
430 .height = VINO_PAL_HEIGHT,
431 .odd = {
432 .top = VINO_CLIPPING_START_ODD_PAL,
433 .left = 0,
434 .bottom = VINO_CLIPPING_START_ODD_PAL
435 + VINO_PAL_HEIGHT / 2 - 1,
436 .right = VINO_PAL_WIDTH,
437 },
438 .even = {
439 .top = VINO_CLIPPING_START_EVEN_PAL,
440 .left = 0,
441 .bottom = VINO_CLIPPING_START_EVEN_PAL
442 + VINO_PAL_HEIGHT / 2 - 1,
443 .right = VINO_PAL_WIDTH,
444 },
445 },{
446 .description = "SECAM",
447 .std = V4L2_STD_SECAM,
448 .fps_min = 5,
449 .fps_max = 25,
450 .framelines = 625,
451 .width = VINO_PAL_WIDTH,
452 .height = VINO_PAL_HEIGHT,
453 .odd = {
454 .top = VINO_CLIPPING_START_ODD_PAL,
455 .left = 0,
456 .bottom = VINO_CLIPPING_START_ODD_PAL
457 + VINO_PAL_HEIGHT / 2 - 1,
458 .right = VINO_PAL_WIDTH,
459 },
460 .even = {
461 .top = VINO_CLIPPING_START_EVEN_PAL,
462 .left = 0,
463 .bottom = VINO_CLIPPING_START_EVEN_PAL
464 + VINO_PAL_HEIGHT / 2 - 1,
465 .right = VINO_PAL_WIDTH,
466 },
467 },{
468 .description = "NTSC/D1",
469 .std = V4L2_STD_NTSC,
470 .fps_min = 6,
471 .fps_max = 30,
472 .framelines = 525,
473 .width = VINO_NTSC_WIDTH,
474 .height = VINO_NTSC_HEIGHT,
475 .odd = {
476 .top = VINO_CLIPPING_START_ODD_D1,
477 .left = 0,
478 .bottom = VINO_CLIPPING_START_ODD_D1
479 + VINO_NTSC_HEIGHT / 2 - 1,
480 .right = VINO_NTSC_WIDTH,
481 },
482 .even = {
483 .top = VINO_CLIPPING_START_EVEN_D1,
484 .left = 0,
485 .bottom = VINO_CLIPPING_START_EVEN_D1
486 + VINO_NTSC_HEIGHT / 2 - 1,
487 .right = VINO_NTSC_WIDTH,
488 },
489 }
490 };
491
492 #define VINO_INDYCAM_V4L2_CONTROL_COUNT 9
493
494 struct v4l2_queryctrl vino_indycam_v4l2_controls[] = {
495 {
496 .id = V4L2_CID_AUTOGAIN,
497 .type = V4L2_CTRL_TYPE_BOOLEAN,
498 .name = "Automatic Gain Control",
499 .minimum = 0,
500 .maximum = 1,
501 .step = 1,
502 .default_value = INDYCAM_AGC_DEFAULT,
503 .flags = 0,
504 .reserved = { INDYCAM_CONTROL_AGC, 0 },
505 },{
506 .id = V4L2_CID_AUTO_WHITE_BALANCE,
507 .type = V4L2_CTRL_TYPE_BOOLEAN,
508 .name = "Automatic White Balance",
509 .minimum = 0,
510 .maximum = 1,
511 .step = 1,
512 .default_value = INDYCAM_AWB_DEFAULT,
513 .flags = 0,
514 .reserved = { INDYCAM_CONTROL_AWB, 0 },
515 },{
516 .id = V4L2_CID_GAIN,
517 .type = V4L2_CTRL_TYPE_INTEGER,
518 .name = "Gain",
519 .minimum = INDYCAM_GAIN_MIN,
520 .maximum = INDYCAM_GAIN_MAX,
521 .step = 1,
522 .default_value = INDYCAM_GAIN_DEFAULT,
523 .flags = 0,
524 .reserved = { INDYCAM_CONTROL_GAIN, 0 },
525 },{
526 .id = V4L2_CID_PRIVATE_BASE,
527 .type = V4L2_CTRL_TYPE_INTEGER,
528 .name = "Red Saturation",
529 .minimum = INDYCAM_RED_SATURATION_MIN,
530 .maximum = INDYCAM_RED_SATURATION_MAX,
531 .step = 1,
532 .default_value = INDYCAM_RED_SATURATION_DEFAULT,
533 .flags = 0,
534 .reserved = { INDYCAM_CONTROL_RED_SATURATION, 0 },
535 },{
536 .id = V4L2_CID_PRIVATE_BASE + 1,
537 .type = V4L2_CTRL_TYPE_INTEGER,
538 .name = "Blue Saturation",
539 .minimum = INDYCAM_BLUE_SATURATION_MIN,
540 .maximum = INDYCAM_BLUE_SATURATION_MAX,
541 .step = 1,
542 .default_value = INDYCAM_BLUE_SATURATION_DEFAULT,
543 .flags = 0,
544 .reserved = { INDYCAM_CONTROL_BLUE_SATURATION, 0 },
545 },{
546 .id = V4L2_CID_RED_BALANCE,
547 .type = V4L2_CTRL_TYPE_INTEGER,
548 .name = "Red Balance",
549 .minimum = INDYCAM_RED_BALANCE_MIN,
550 .maximum = INDYCAM_RED_BALANCE_MAX,
551 .step = 1,
552 .default_value = INDYCAM_RED_BALANCE_DEFAULT,
553 .flags = 0,
554 .reserved = { INDYCAM_CONTROL_RED_BALANCE, 0 },
555 },{
556 .id = V4L2_CID_BLUE_BALANCE,
557 .type = V4L2_CTRL_TYPE_INTEGER,
558 .name = "Blue Balance",
559 .minimum = INDYCAM_BLUE_BALANCE_MIN,
560 .maximum = INDYCAM_BLUE_BALANCE_MAX,
561 .step = 1,
562 .default_value = INDYCAM_BLUE_BALANCE_DEFAULT,
563 .flags = 0,
564 .reserved = { INDYCAM_CONTROL_BLUE_BALANCE, 0 },
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 .flags = 0,
574 .reserved = { INDYCAM_CONTROL_SHUTTER, 0 },
575 },{
576 .id = V4L2_CID_GAMMA,
577 .type = V4L2_CTRL_TYPE_INTEGER,
578 .name = "Gamma",
579 .minimum = INDYCAM_GAMMA_MIN,
580 .maximum = INDYCAM_GAMMA_MAX,
581 .step = 1,
582 .default_value = INDYCAM_GAMMA_DEFAULT,
583 .flags = 0,
584 .reserved = { INDYCAM_CONTROL_GAMMA, 0 },
585 }
586 };
587
588 #define VINO_SAA7191_V4L2_CONTROL_COUNT 9
589
590 struct v4l2_queryctrl vino_saa7191_v4l2_controls[] = {
591 {
592 .id = V4L2_CID_HUE,
593 .type = V4L2_CTRL_TYPE_INTEGER,
594 .name = "Hue",
595 .minimum = SAA7191_HUE_MIN,
596 .maximum = SAA7191_HUE_MAX,
597 .step = 1,
598 .default_value = SAA7191_HUE_DEFAULT,
599 .flags = 0,
600 .reserved = { SAA7191_CONTROL_HUE, 0 },
601 },{
602 .id = V4L2_CID_PRIVATE_BASE,
603 .type = V4L2_CTRL_TYPE_INTEGER,
604 .name = "Luminance Bandpass",
605 .minimum = SAA7191_BANDPASS_MIN,
606 .maximum = SAA7191_BANDPASS_MAX,
607 .step = 1,
608 .default_value = SAA7191_BANDPASS_DEFAULT,
609 .flags = 0,
610 .reserved = { SAA7191_CONTROL_BANDPASS, 0 },
611 },{
612 .id = V4L2_CID_PRIVATE_BASE + 1,
613 .type = V4L2_CTRL_TYPE_INTEGER,
614 .name = "Luminance Bandpass Weight",
615 .minimum = SAA7191_BANDPASS_WEIGHT_MIN,
616 .maximum = SAA7191_BANDPASS_WEIGHT_MAX,
617 .step = 1,
618 .default_value = SAA7191_BANDPASS_WEIGHT_DEFAULT,
619 .flags = 0,
620 .reserved = { SAA7191_CONTROL_BANDPASS_WEIGHT, 0 },
621 },{
622 .id = V4L2_CID_PRIVATE_BASE + 2,
623 .type = V4L2_CTRL_TYPE_INTEGER,
624 .name = "HF Luminance Coring",
625 .minimum = SAA7191_CORING_MIN,
626 .maximum = SAA7191_CORING_MAX,
627 .step = 1,
628 .default_value = SAA7191_CORING_DEFAULT,
629 .flags = 0,
630 .reserved = { SAA7191_CONTROL_CORING, 0 },
631 },{
632 .id = V4L2_CID_PRIVATE_BASE + 3,
633 .type = V4L2_CTRL_TYPE_BOOLEAN,
634 .name = "Force Colour",
635 .minimum = SAA7191_FORCE_COLOUR_MIN,
636 .maximum = SAA7191_FORCE_COLOUR_MAX,
637 .step = 1,
638 .default_value = SAA7191_FORCE_COLOUR_DEFAULT,
639 .flags = 0,
640 .reserved = { SAA7191_CONTROL_FORCE_COLOUR, 0 },
641 },{
642 .id = V4L2_CID_PRIVATE_BASE + 4,
643 .type = V4L2_CTRL_TYPE_INTEGER,
644 .name = "Chrominance Gain Control",
645 .minimum = SAA7191_CHROMA_GAIN_MIN,
646 .maximum = SAA7191_CHROMA_GAIN_MAX,
647 .step = 1,
648 .default_value = SAA7191_CHROMA_GAIN_DEFAULT,
649 .flags = 0,
650 .reserved = { SAA7191_CONTROL_CHROMA_GAIN, 0 },
651 },{
652 .id = V4L2_CID_PRIVATE_BASE + 5,
653 .type = V4L2_CTRL_TYPE_BOOLEAN,
654 .name = "VTR Time Constant",
655 .minimum = SAA7191_VTRC_MIN,
656 .maximum = SAA7191_VTRC_MAX,
657 .step = 1,
658 .default_value = SAA7191_VTRC_DEFAULT,
659 .flags = 0,
660 .reserved = { SAA7191_CONTROL_VTRC, 0 },
661 },{
662 .id = V4L2_CID_PRIVATE_BASE + 6,
663 .type = V4L2_CTRL_TYPE_INTEGER,
664 .name = "Luminance Delay Compensation",
665 .minimum = SAA7191_LUMA_DELAY_MIN,
666 .maximum = SAA7191_LUMA_DELAY_MAX,
667 .step = 1,
668 .default_value = SAA7191_LUMA_DELAY_DEFAULT,
669 .flags = 0,
670 .reserved = { SAA7191_CONTROL_LUMA_DELAY, 0 },
671 },{
672 .id = V4L2_CID_PRIVATE_BASE + 7,
673 .type = V4L2_CTRL_TYPE_INTEGER,
674 .name = "Vertical Noise Reduction",
675 .minimum = SAA7191_VNR_MIN,
676 .maximum = SAA7191_VNR_MAX,
677 .step = 1,
678 .default_value = SAA7191_VNR_DEFAULT,
679 .flags = 0,
680 .reserved = { SAA7191_CONTROL_VNR, 0 },
681 }
682 };
683
684 /* VINO I2C bus functions */
685
686 unsigned i2c_vino_getctrl(void *data)
687 {
688 return vino->i2c_control;
689 }
690
691 void i2c_vino_setctrl(void *data, unsigned val)
692 {
693 vino->i2c_control = val;
694 }
695
696 unsigned i2c_vino_rdata(void *data)
697 {
698 return vino->i2c_data;
699 }
700
701 void i2c_vino_wdata(void *data, unsigned val)
702 {
703 vino->i2c_data = val;
704 }
705
706 static struct i2c_algo_sgi_data i2c_sgi_vino_data =
707 {
708 .getctrl = &i2c_vino_getctrl,
709 .setctrl = &i2c_vino_setctrl,
710 .rdata = &i2c_vino_rdata,
711 .wdata = &i2c_vino_wdata,
712 .xfer_timeout = 200,
713 .ack_timeout = 1000,
714 };
715
716 /*
717 * There are two possible clients on VINO I2C bus, so we limit usage only
718 * to them.
719 */
720 static int i2c_vino_client_reg(struct i2c_client *client)
721 {
722 unsigned long flags;
723 int ret = 0;
724
725 spin_lock_irqsave(&vino_drvdata->input_lock, flags);
726 switch (client->driver->id) {
727 case I2C_DRIVERID_SAA7191:
728 if (vino_drvdata->decoder.driver)
729 ret = -EBUSY;
730 else
731 vino_drvdata->decoder.driver = client;
732 break;
733 case I2C_DRIVERID_INDYCAM:
734 if (vino_drvdata->camera.driver)
735 ret = -EBUSY;
736 else
737 vino_drvdata->camera.driver = client;
738 break;
739 default:
740 ret = -ENODEV;
741 }
742 spin_unlock_irqrestore(&vino_drvdata->input_lock, flags);
743
744 return ret;
745 }
746
747 static int i2c_vino_client_unreg(struct i2c_client *client)
748 {
749 unsigned long flags;
750 int ret = 0;
751
752 spin_lock_irqsave(&vino_drvdata->input_lock, flags);
753 if (client == vino_drvdata->decoder.driver) {
754 if (vino_drvdata->decoder.owner != VINO_NO_CHANNEL)
755 ret = -EBUSY;
756 else
757 vino_drvdata->decoder.driver = NULL;
758 } else if (client == vino_drvdata->camera.driver) {
759 if (vino_drvdata->camera.owner != VINO_NO_CHANNEL)
760 ret = -EBUSY;
761 else
762 vino_drvdata->camera.driver = NULL;
763 }
764 spin_unlock_irqrestore(&vino_drvdata->input_lock, flags);
765
766 return ret;
767 }
768
769 static struct i2c_adapter vino_i2c_adapter =
770 {
771 .name = "VINO I2C bus",
772 .id = I2C_HW_SGI_VINO,
773 .algo_data = &i2c_sgi_vino_data,
774 .client_register = &i2c_vino_client_reg,
775 .client_unregister = &i2c_vino_client_unreg,
776 };
777
778 static int vino_i2c_add_bus(void)
779 {
780 return i2c_sgi_add_bus(&vino_i2c_adapter);
781 }
782
783 static int vino_i2c_del_bus(void)
784 {
785 return i2c_sgi_del_bus(&vino_i2c_adapter);
786 }
787
788 static int i2c_camera_command(unsigned int cmd, void *arg)
789 {
790 return vino_drvdata->camera.driver->
791 driver->command(vino_drvdata->camera.driver,
792 cmd, arg);
793 }
794
795 static int i2c_decoder_command(unsigned int cmd, void *arg)
796 {
797 return vino_drvdata->decoder.driver->
798 driver->command(vino_drvdata->decoder.driver,
799 cmd, arg);
800 }
801
802 /* VINO framebuffer/DMA descriptor management */
803
804 static void vino_free_buffer_with_count(struct vino_framebuffer *fb,
805 unsigned int count)
806 {
807 unsigned int i;
808
809 dprintk("vino_free_buffer_with_count(): count = %d\n", count);
810
811 for (i = 0; i < count; i++) {
812 ClearPageReserved(virt_to_page(fb->desc_table.virtual[i]));
813 dma_unmap_single(NULL,
814 fb->desc_table.dma_cpu[VINO_PAGE_RATIO * i],
815 PAGE_SIZE, DMA_FROM_DEVICE);
816 free_page(fb->desc_table.virtual[i]);
817 }
818
819 dma_free_coherent(NULL,
820 VINO_PAGE_RATIO * (fb->desc_table.page_count + 4) *
821 sizeof(dma_addr_t), (void *)fb->desc_table.dma_cpu,
822 fb->desc_table.dma);
823 kfree(fb->desc_table.virtual);
824
825 memset(fb, 0, sizeof(struct vino_framebuffer));
826 }
827
828 static void vino_free_buffer(struct vino_framebuffer *fb)
829 {
830 vino_free_buffer_with_count(fb, fb->desc_table.page_count);
831 }
832
833 static int vino_allocate_buffer(struct vino_framebuffer *fb,
834 unsigned int size)
835 {
836 unsigned int count, i, j;
837 int ret = 0;
838
839 dprintk("vino_allocate_buffer():\n");
840
841 if (size < 1)
842 return -EINVAL;
843
844 memset(fb, 0, sizeof(struct vino_framebuffer));
845
846 count = ((size / PAGE_SIZE) + 4) & ~3;
847
848 dprintk("vino_allocate_buffer(): size = %d, count = %d\n",
849 size, count);
850
851 /* allocate memory for table with virtual (page) addresses */
852 fb->desc_table.virtual = (unsigned long *)
853 kmalloc(count * sizeof(unsigned long), GFP_KERNEL);
854 if (!fb->desc_table.virtual)
855 return -ENOMEM;
856
857 /* allocate memory for table with dma addresses
858 * (has space for four extra descriptors) */
859 fb->desc_table.dma_cpu =
860 dma_alloc_coherent(NULL, VINO_PAGE_RATIO * (count + 4) *
861 sizeof(dma_addr_t), &fb->desc_table.dma,
862 GFP_KERNEL | GFP_DMA);
863 if (!fb->desc_table.dma_cpu) {
864 ret = -ENOMEM;
865 goto out_free_virtual;
866 }
867
868 /* allocate pages for the buffer and acquire the according
869 * dma addresses */
870 for (i = 0; i < count; i++) {
871 dma_addr_t dma_data_addr;
872
873 fb->desc_table.virtual[i] =
874 get_zeroed_page(GFP_KERNEL | GFP_DMA);
875 if (!fb->desc_table.virtual[i]) {
876 ret = -ENOBUFS;
877 break;
878 }
879
880 dma_data_addr =
881 dma_map_single(NULL,
882 (void *)fb->desc_table.virtual[i],
883 PAGE_SIZE, DMA_FROM_DEVICE);
884
885 for (j = 0; j < VINO_PAGE_RATIO; j++) {
886 fb->desc_table.dma_cpu[VINO_PAGE_RATIO * i + j] =
887 dma_data_addr + VINO_PAGE_SIZE * j;
888 }
889
890 SetPageReserved(virt_to_page(fb->desc_table.virtual[i]));
891 }
892
893 /* page_count needs to be set anyway, because the descriptor table has
894 * been allocated according to this number */
895 fb->desc_table.page_count = count;
896
897 if (ret) {
898 /* the descriptor with index i doesn't contain
899 * a valid address yet */
900 vino_free_buffer_with_count(fb, i);
901 return ret;
902 }
903
904 //fb->size = size;
905 fb->size = count * PAGE_SIZE;
906 fb->data_format = VINO_DATA_FMT_NONE;
907
908 /* set the dma stop-bit for the last (count+1)th descriptor */
909 fb->desc_table.dma_cpu[VINO_PAGE_RATIO * count] = VINO_DESC_STOP;
910 return 0;
911
912 out_free_virtual:
913 kfree(fb->desc_table.virtual);
914 return ret;
915 }
916
917 #if 0
918 /* user buffers not fully implemented yet */
919 static int vino_prepare_user_buffer(struct vino_framebuffer *fb,
920 void *user,
921 unsigned int size)
922 {
923 unsigned int count, i, j;
924 int ret = 0;
925
926 dprintk("vino_prepare_user_buffer():\n");
927
928 if (size < 1)
929 return -EINVAL;
930
931 memset(fb, 0, sizeof(struct vino_framebuffer));
932
933 count = ((size / PAGE_SIZE)) & ~3;
934
935 dprintk("vino_prepare_user_buffer(): size = %d, count = %d\n",
936 size, count);
937
938 /* allocate memory for table with virtual (page) addresses */
939 fb->desc_table.virtual = (unsigned long *)
940 kmalloc(count * sizeof(unsigned long), GFP_KERNEL);
941 if (!fb->desc_table.virtual)
942 return -ENOMEM;
943
944 /* allocate memory for table with dma addresses
945 * (has space for four extra descriptors) */
946 fb->desc_table.dma_cpu =
947 dma_alloc_coherent(NULL, VINO_PAGE_RATIO * (count + 4) *
948 sizeof(dma_addr_t), &fb->desc_table.dma,
949 GFP_KERNEL | GFP_DMA);
950 if (!fb->desc_table.dma_cpu) {
951 ret = -ENOMEM;
952 goto out_free_virtual;
953 }
954
955 /* allocate pages for the buffer and acquire the according
956 * dma addresses */
957 for (i = 0; i < count; i++) {
958 dma_addr_t dma_data_addr;
959
960 fb->desc_table.virtual[i] =
961 get_zeroed_page(GFP_KERNEL | GFP_DMA);
962 if (!fb->desc_table.virtual[i]) {
963 ret = -ENOBUFS;
964 break;
965 }
966
967 dma_data_addr =
968 dma_map_single(NULL,
969 (void *)fb->desc_table.virtual[i],
970 PAGE_SIZE, DMA_FROM_DEVICE);
971
972 for (j = 0; j < VINO_PAGE_RATIO; j++) {
973 fb->desc_table.dma_cpu[VINO_PAGE_RATIO * i + j] =
974 dma_data_addr + VINO_PAGE_SIZE * j;
975 }
976
977 SetPageReserved(virt_to_page(fb->desc_table.virtual[i]));
978 }
979
980 /* page_count needs to be set anyway, because the descriptor table has
981 * been allocated according to this number */
982 fb->desc_table.page_count = count;
983
984 if (ret) {
985 /* the descriptor with index i doesn't contain
986 * a valid address yet */
987 vino_free_buffer_with_count(fb, i);
988 return ret;
989 }
990
991 //fb->size = size;
992 fb->size = count * PAGE_SIZE;
993
994 /* set the dma stop-bit for the last (count+1)th descriptor */
995 fb->desc_table.dma_cpu[VINO_PAGE_RATIO * count] = VINO_DESC_STOP;
996 return 0;
997
998 out_free_virtual:
999 kfree(fb->desc_table.virtual);
1000 return ret;
1001 }
1002 #endif
1003
1004 static void vino_sync_buffer(struct vino_framebuffer *fb)
1005 {
1006 int i;
1007
1008 dprintk("vino_sync_buffer():\n");
1009
1010 for (i = 0; i < fb->desc_table.page_count; i++)
1011 dma_sync_single(NULL,
1012 fb->desc_table.dma_cpu[VINO_PAGE_RATIO * i],
1013 PAGE_SIZE, DMA_FROM_DEVICE);
1014 }
1015
1016 /* Framebuffer fifo functions (need to be locked externally) */
1017
1018 static inline void vino_fifo_init(struct vino_framebuffer_fifo *f,
1019 unsigned int length)
1020 {
1021 f->length = 0;
1022 f->used = 0;
1023 f->head = 0;
1024 f->tail = 0;
1025
1026 if (length > VINO_FRAMEBUFFER_COUNT_MAX)
1027 length = VINO_FRAMEBUFFER_COUNT_MAX;
1028
1029 f->length = length;
1030 }
1031
1032 /* returns true/false */
1033 static inline int vino_fifo_has_id(struct vino_framebuffer_fifo *f,
1034 unsigned int id)
1035 {
1036 unsigned int i;
1037
1038 for (i = f->head; i == (f->tail - 1); i = (i + 1) % f->length) {
1039 if (f->data[i] == id)
1040 return 1;
1041 }
1042
1043 return 0;
1044 }
1045
1046 #if 0
1047 /* returns true/false */
1048 static inline int vino_fifo_full(struct vino_framebuffer_fifo *f)
1049 {
1050 return (f->used == f->length);
1051 }
1052 #endif
1053
1054 static inline unsigned int vino_fifo_get_used(struct vino_framebuffer_fifo *f)
1055 {
1056 return f->used;
1057 }
1058
1059 static int vino_fifo_enqueue(struct vino_framebuffer_fifo *f, unsigned int id)
1060 {
1061 if (id >= f->length) {
1062 return VINO_QUEUE_ERROR;
1063 }
1064
1065 if (vino_fifo_has_id(f, id)) {
1066 return VINO_QUEUE_ERROR;
1067 }
1068
1069 if (f->used < f->length) {
1070 f->data[f->tail] = id;
1071 f->tail = (f->tail + 1) % f->length;
1072 f->used++;
1073 } else {
1074 return VINO_QUEUE_ERROR;
1075 }
1076
1077 return 0;
1078 }
1079
1080 static int vino_fifo_peek(struct vino_framebuffer_fifo *f, unsigned int *id)
1081 {
1082 if (f->used > 0) {
1083 *id = f->data[f->head];
1084 } else {
1085 return VINO_QUEUE_ERROR;
1086 }
1087
1088 return 0;
1089 }
1090
1091 static int vino_fifo_dequeue(struct vino_framebuffer_fifo *f, unsigned int *id)
1092 {
1093 if (f->used > 0) {
1094 *id = f->data[f->head];
1095 f->head = (f->head + 1) % f->length;
1096 f->used--;
1097 } else {
1098 return VINO_QUEUE_ERROR;
1099 }
1100
1101 return 0;
1102 }
1103
1104 /* Framebuffer queue functions */
1105
1106 /* execute with queue_lock locked */
1107 static void vino_queue_free_with_count(struct vino_framebuffer_queue *q,
1108 unsigned int length)
1109 {
1110 unsigned int i;
1111
1112 q->length = 0;
1113 memset(&q->in, 0, sizeof(struct vino_framebuffer_fifo));
1114 memset(&q->out, 0, sizeof(struct vino_framebuffer_fifo));
1115 for (i = 0; i < length; i++) {
1116 dprintk("vino_queue_free_with_count(): freeing buffer %d\n",
1117 i);
1118 vino_free_buffer(q->buffer[i]);
1119 kfree(q->buffer[i]);
1120 }
1121
1122 q->type = VINO_MEMORY_NONE;
1123 q->magic = 0;
1124 }
1125
1126 static void vino_queue_free(struct vino_framebuffer_queue *q)
1127 {
1128 dprintk("vino_queue_free():\n");
1129
1130 if (q->magic != VINO_QUEUE_MAGIC)
1131 return;
1132 if (q->type != VINO_MEMORY_MMAP)
1133 return;
1134
1135 mutex_lock(&q->queue_mutex);
1136
1137 vino_queue_free_with_count(q, q->length);
1138
1139 mutex_unlock(&q->queue_mutex);
1140 }
1141
1142 static int vino_queue_init(struct vino_framebuffer_queue *q,
1143 unsigned int *length)
1144 {
1145 unsigned int i;
1146 int ret = 0;
1147
1148 dprintk("vino_queue_init(): length = %d\n", *length);
1149
1150 if (q->magic == VINO_QUEUE_MAGIC) {
1151 dprintk("vino_queue_init(): queue already initialized!\n");
1152 return -EINVAL;
1153 }
1154
1155 if (q->type != VINO_MEMORY_NONE) {
1156 dprintk("vino_queue_init(): queue already initialized!\n");
1157 return -EINVAL;
1158 }
1159
1160 if (*length < 1)
1161 return -EINVAL;
1162
1163 mutex_lock(&q->queue_mutex);
1164
1165 if (*length > VINO_FRAMEBUFFER_COUNT_MAX)
1166 *length = VINO_FRAMEBUFFER_COUNT_MAX;
1167
1168 q->length = 0;
1169
1170 for (i = 0; i < *length; i++) {
1171 dprintk("vino_queue_init(): allocating buffer %d\n", i);
1172 q->buffer[i] = kmalloc(sizeof(struct vino_framebuffer),
1173 GFP_KERNEL);
1174 if (!q->buffer[i]) {
1175 dprintk("vino_queue_init(): kmalloc() failed\n");
1176 ret = -ENOMEM;
1177 break;
1178 }
1179
1180 ret = vino_allocate_buffer(q->buffer[i],
1181 VINO_FRAMEBUFFER_SIZE);
1182 if (ret) {
1183 kfree(q->buffer[i]);
1184 dprintk("vino_queue_init(): "
1185 "vino_allocate_buffer() failed\n");
1186 break;
1187 }
1188
1189 q->buffer[i]->id = i;
1190 if (i > 0) {
1191 q->buffer[i]->offset = q->buffer[i - 1]->offset +
1192 q->buffer[i - 1]->size;
1193 } else {
1194 q->buffer[i]->offset = 0;
1195 }
1196
1197 spin_lock_init(&q->buffer[i]->state_lock);
1198
1199 dprintk("vino_queue_init(): buffer = %d, offset = %d, "
1200 "size = %d\n", i, q->buffer[i]->offset,
1201 q->buffer[i]->size);
1202 }
1203
1204 if (ret) {
1205 vino_queue_free_with_count(q, i);
1206 *length = 0;
1207 } else {
1208 q->length = *length;
1209 vino_fifo_init(&q->in, q->length);
1210 vino_fifo_init(&q->out, q->length);
1211 q->type = VINO_MEMORY_MMAP;
1212 q->magic = VINO_QUEUE_MAGIC;
1213 }
1214
1215 mutex_unlock(&q->queue_mutex);
1216
1217 return ret;
1218 }
1219
1220 static struct vino_framebuffer *vino_queue_add(struct
1221 vino_framebuffer_queue *q,
1222 unsigned int id)
1223 {
1224 struct vino_framebuffer *ret = NULL;
1225 unsigned int total;
1226 unsigned long flags;
1227
1228 dprintk("vino_queue_add(): id = %d\n", id);
1229
1230 if (q->magic != VINO_QUEUE_MAGIC) {
1231 return ret;
1232 }
1233
1234 spin_lock_irqsave(&q->queue_lock, flags);
1235
1236 if (q->length == 0)
1237 goto out;
1238
1239 if (id >= q->length)
1240 goto out;
1241
1242 /* not needed?: if (vino_fifo_full(&q->out)) {
1243 goto out;
1244 }*/
1245 /* check that outgoing queue isn't already full
1246 * (or that it won't become full) */
1247 total = vino_fifo_get_used(&q->in) +
1248 vino_fifo_get_used(&q->out);
1249 if (total >= q->length)
1250 goto out;
1251
1252 if (vino_fifo_enqueue(&q->in, id))
1253 goto out;
1254
1255 ret = q->buffer[id];
1256
1257 out:
1258 spin_unlock_irqrestore(&q->queue_lock, flags);
1259
1260 return ret;
1261 }
1262
1263 static struct vino_framebuffer *vino_queue_transfer(struct
1264 vino_framebuffer_queue *q)
1265 {
1266 struct vino_framebuffer *ret = NULL;
1267 struct vino_framebuffer *fb;
1268 int id;
1269 unsigned long flags;
1270
1271 dprintk("vino_queue_transfer():\n");
1272
1273 if (q->magic != VINO_QUEUE_MAGIC) {
1274 return ret;
1275 }
1276
1277 spin_lock_irqsave(&q->queue_lock, flags);
1278
1279 if (q->length == 0)
1280 goto out;
1281
1282 // now this actually removes an entry from the incoming queue
1283 if (vino_fifo_dequeue(&q->in, &id)) {
1284 goto out;
1285 }
1286
1287 dprintk("vino_queue_transfer(): id = %d\n", id);
1288 fb = q->buffer[id];
1289
1290 // we have already checked that the outgoing queue is not full, but...
1291 if (vino_fifo_enqueue(&q->out, id)) {
1292 printk(KERN_ERR "vino_queue_transfer(): "
1293 "outgoing queue is full, this shouldn't happen!\n");
1294 goto out;
1295 }
1296
1297 ret = fb;
1298 out:
1299 spin_unlock_irqrestore(&q->queue_lock, flags);
1300
1301 return ret;
1302 }
1303
1304 /* returns true/false */
1305 static int vino_queue_incoming_contains(struct vino_framebuffer_queue *q,
1306 unsigned int id)
1307 {
1308 int ret = 0;
1309 unsigned long flags;
1310
1311 if (q->magic != VINO_QUEUE_MAGIC) {
1312 return ret;
1313 }
1314
1315 spin_lock_irqsave(&q->queue_lock, flags);
1316
1317 if (q->length == 0)
1318 goto out;
1319
1320 ret = vino_fifo_has_id(&q->in, id);
1321
1322 out:
1323 spin_unlock_irqrestore(&q->queue_lock, flags);
1324
1325 return ret;
1326 }
1327
1328 /* returns true/false */
1329 static int vino_queue_outgoing_contains(struct vino_framebuffer_queue *q,
1330 unsigned int id)
1331 {
1332 int ret = 0;
1333 unsigned long flags;
1334
1335 if (q->magic != VINO_QUEUE_MAGIC) {
1336 return ret;
1337 }
1338
1339 spin_lock_irqsave(&q->queue_lock, flags);
1340
1341 if (q->length == 0)
1342 goto out;
1343
1344 ret = vino_fifo_has_id(&q->out, id);
1345
1346 out:
1347 spin_unlock_irqrestore(&q->queue_lock, flags);
1348
1349 return ret;
1350 }
1351
1352 static int vino_queue_get_incoming(struct vino_framebuffer_queue *q,
1353 unsigned int *used)
1354 {
1355 int ret = 0;
1356 unsigned long flags;
1357
1358 if (q->magic != VINO_QUEUE_MAGIC) {
1359 return VINO_QUEUE_ERROR;
1360 }
1361
1362 spin_lock_irqsave(&q->queue_lock, flags);
1363
1364 if (q->length == 0) {
1365 ret = VINO_QUEUE_ERROR;
1366 goto out;
1367 }
1368
1369 *used = vino_fifo_get_used(&q->in);
1370
1371 out:
1372 spin_unlock_irqrestore(&q->queue_lock, flags);
1373
1374 return ret;
1375 }
1376
1377 static int vino_queue_get_outgoing(struct vino_framebuffer_queue *q,
1378 unsigned int *used)
1379 {
1380 int ret = 0;
1381 unsigned long flags;
1382
1383 if (q->magic != VINO_QUEUE_MAGIC) {
1384 return VINO_QUEUE_ERROR;
1385 }
1386
1387 spin_lock_irqsave(&q->queue_lock, flags);
1388
1389 if (q->length == 0) {
1390 ret = VINO_QUEUE_ERROR;
1391 goto out;
1392 }
1393
1394 *used = vino_fifo_get_used(&q->out);
1395
1396 out:
1397 spin_unlock_irqrestore(&q->queue_lock, flags);
1398
1399 return ret;
1400 }
1401
1402 #if 0
1403 static int vino_queue_get_total(struct vino_framebuffer_queue *q,
1404 unsigned int *total)
1405 {
1406 int ret = 0;
1407 unsigned long flags;
1408
1409 if (q->magic != VINO_QUEUE_MAGIC) {
1410 return VINO_QUEUE_ERROR;
1411 }
1412
1413 spin_lock_irqsave(&q->queue_lock, flags);
1414
1415 if (q->length == 0) {
1416 ret = VINO_QUEUE_ERROR;
1417 goto out;
1418 }
1419
1420 *total = vino_fifo_get_used(&q->in) +
1421 vino_fifo_get_used(&q->out);
1422
1423 out:
1424 spin_unlock_irqrestore(&q->queue_lock, flags);
1425
1426 return ret;
1427 }
1428 #endif
1429
1430 static struct vino_framebuffer *vino_queue_peek(struct
1431 vino_framebuffer_queue *q,
1432 unsigned int *id)
1433 {
1434 struct vino_framebuffer *ret = NULL;
1435 unsigned long flags;
1436
1437 if (q->magic != VINO_QUEUE_MAGIC) {
1438 return ret;
1439 }
1440
1441 spin_lock_irqsave(&q->queue_lock, flags);
1442
1443 if (q->length == 0)
1444 goto out;
1445
1446 if (vino_fifo_peek(&q->in, id)) {
1447 goto out;
1448 }
1449
1450 ret = q->buffer[*id];
1451 out:
1452 spin_unlock_irqrestore(&q->queue_lock, flags);
1453
1454 return ret;
1455 }
1456
1457 static struct vino_framebuffer *vino_queue_remove(struct
1458 vino_framebuffer_queue *q,
1459 unsigned int *id)
1460 {
1461 struct vino_framebuffer *ret = NULL;
1462 unsigned long flags;
1463 dprintk("vino_queue_remove():\n");
1464
1465 if (q->magic != VINO_QUEUE_MAGIC) {
1466 return ret;
1467 }
1468
1469 spin_lock_irqsave(&q->queue_lock, flags);
1470
1471 if (q->length == 0)
1472 goto out;
1473
1474 if (vino_fifo_dequeue(&q->out, id)) {
1475 goto out;
1476 }
1477
1478 dprintk("vino_queue_remove(): id = %d\n", *id);
1479 ret = q->buffer[*id];
1480 out:
1481 spin_unlock_irqrestore(&q->queue_lock, flags);
1482
1483 return ret;
1484 }
1485
1486 static struct
1487 vino_framebuffer *vino_queue_get_buffer(struct vino_framebuffer_queue *q,
1488 unsigned int id)
1489 {
1490 struct vino_framebuffer *ret = NULL;
1491 unsigned long flags;
1492
1493 if (q->magic != VINO_QUEUE_MAGIC) {
1494 return ret;
1495 }
1496
1497 spin_lock_irqsave(&q->queue_lock, flags);
1498
1499 if (q->length == 0)
1500 goto out;
1501
1502 if (id >= q->length)
1503 goto out;
1504
1505 ret = q->buffer[id];
1506 out:
1507 spin_unlock_irqrestore(&q->queue_lock, flags);
1508
1509 return ret;
1510 }
1511
1512 static unsigned int vino_queue_get_length(struct vino_framebuffer_queue *q)
1513 {
1514 unsigned int length = 0;
1515 unsigned long flags;
1516
1517 if (q->magic != VINO_QUEUE_MAGIC) {
1518 return length;
1519 }
1520
1521 spin_lock_irqsave(&q->queue_lock, flags);
1522 length = q->length;
1523 spin_unlock_irqrestore(&q->queue_lock, flags);
1524
1525 return length;
1526 }
1527
1528 static int vino_queue_has_mapped_buffers(struct vino_framebuffer_queue *q)
1529 {
1530 unsigned int i;
1531 int ret = 0;
1532 unsigned long flags;
1533
1534 if (q->magic != VINO_QUEUE_MAGIC) {
1535 return ret;
1536 }
1537
1538 spin_lock_irqsave(&q->queue_lock, flags);
1539 for (i = 0; i < q->length; i++) {
1540 if (q->buffer[i]->map_count > 0) {
1541 ret = 1;
1542 break;
1543 }
1544 }
1545 spin_unlock_irqrestore(&q->queue_lock, flags);
1546
1547 return ret;
1548 }
1549
1550 /* VINO functions */
1551
1552 /* execute with input_lock locked */
1553 static void vino_update_line_size(struct vino_channel_settings *vcs)
1554 {
1555 unsigned int w = vcs->clipping.right - vcs->clipping.left;
1556 unsigned int d = vcs->decimation;
1557 unsigned int bpp = vino_data_formats[vcs->data_format].bpp;
1558 unsigned int lsize;
1559
1560 dprintk("update_line_size(): before: w = %d, d = %d, "
1561 "line_size = %d\n", w, d, vcs->line_size);
1562
1563 /* line size must be multiple of 8 bytes */
1564 lsize = (bpp * (w / d)) & ~7;
1565 w = (lsize / bpp) * d;
1566
1567 vcs->clipping.right = vcs->clipping.left + w;
1568 vcs->line_size = lsize;
1569
1570 dprintk("update_line_size(): after: w = %d, d = %d, "
1571 "line_size = %d\n", w, d, vcs->line_size);
1572 }
1573
1574 /* execute with input_lock locked */
1575 static void vino_set_clipping(struct vino_channel_settings *vcs,
1576 unsigned int x, unsigned int y,
1577 unsigned int w, unsigned int h)
1578 {
1579 unsigned int maxwidth, maxheight;
1580 unsigned int d;
1581
1582 maxwidth = vino_data_norms[vcs->data_norm].width;
1583 maxheight = vino_data_norms[vcs->data_norm].height;
1584 d = vcs->decimation;
1585
1586 y &= ~1; /* odd/even fields */
1587
1588 if (x > maxwidth) {
1589 x = 0;
1590 }
1591 if (y > maxheight) {
1592 y = 0;
1593 }
1594
1595 if (((w / d) < VINO_MIN_WIDTH)
1596 || ((h / d) < VINO_MIN_HEIGHT)) {
1597 w = VINO_MIN_WIDTH * d;
1598 h = VINO_MIN_HEIGHT * d;
1599 }
1600
1601 if ((x + w) > maxwidth) {
1602 w = maxwidth - x;
1603 if ((w / d) < VINO_MIN_WIDTH)
1604 x = maxwidth - VINO_MIN_WIDTH * d;
1605 }
1606 if ((y + h) > maxheight) {
1607 h = maxheight - y;
1608 if ((h / d) < VINO_MIN_HEIGHT)
1609 y = maxheight - VINO_MIN_HEIGHT * d;
1610 }
1611
1612 vcs->clipping.left = x;
1613 vcs->clipping.top = y;
1614 vcs->clipping.right = x + w;
1615 vcs->clipping.bottom = y + h;
1616
1617 vino_update_line_size(vcs);
1618
1619 dprintk("clipping %d, %d, %d, %d / %d - %d\n",
1620 vcs->clipping.left, vcs->clipping.top, vcs->clipping.right,
1621 vcs->clipping.bottom, vcs->decimation, vcs->line_size);
1622 }
1623
1624 /* execute with input_lock locked */
1625 static inline void vino_set_default_clipping(struct vino_channel_settings *vcs)
1626 {
1627 vino_set_clipping(vcs, 0, 0, vino_data_norms[vcs->data_norm].width,
1628 vino_data_norms[vcs->data_norm].height);
1629 }
1630
1631 /* execute with input_lock locked */
1632 static void vino_set_scaling(struct vino_channel_settings *vcs,
1633 unsigned int w, unsigned int h)
1634 {
1635 unsigned int x, y, curw, curh, d;
1636
1637 x = vcs->clipping.left;
1638 y = vcs->clipping.top;
1639 curw = vcs->clipping.right - vcs->clipping.left;
1640 curh = vcs->clipping.bottom - vcs->clipping.top;
1641
1642 d = max(curw / w, curh / h);
1643
1644 dprintk("scaling w: %d, h: %d, curw: %d, curh: %d, d: %d\n",
1645 w, h, curw, curh, d);
1646
1647 if (d < 1) {
1648 d = 1;
1649 } else if (d > 8) {
1650 d = 8;
1651 }
1652
1653 vcs->decimation = d;
1654 vino_set_clipping(vcs, x, y, w * d, h * d);
1655
1656 dprintk("scaling %d, %d, %d, %d / %d - %d\n", vcs->clipping.left,
1657 vcs->clipping.top, vcs->clipping.right, vcs->clipping.bottom,
1658 vcs->decimation, vcs->line_size);
1659 }
1660
1661 /* execute with input_lock locked */
1662 static inline void vino_set_default_scaling(struct vino_channel_settings *vcs)
1663 {
1664 vino_set_scaling(vcs, vcs->clipping.right - vcs->clipping.left,
1665 vcs->clipping.bottom - vcs->clipping.top);
1666 }
1667
1668 /* execute with input_lock locked */
1669 static void vino_set_framerate(struct vino_channel_settings *vcs,
1670 unsigned int fps)
1671 {
1672 unsigned int mask;
1673
1674 switch (vcs->data_norm) {
1675 case VINO_DATA_NORM_NTSC:
1676 case VINO_DATA_NORM_D1:
1677 fps = (unsigned int)(fps / 6) * 6; // FIXME: round!
1678
1679 if (fps < vino_data_norms[vcs->data_norm].fps_min)
1680 fps = vino_data_norms[vcs->data_norm].fps_min;
1681 if (fps > vino_data_norms[vcs->data_norm].fps_max)
1682 fps = vino_data_norms[vcs->data_norm].fps_max;
1683
1684 switch (fps) {
1685 case 6:
1686 mask = 0x003;
1687 break;
1688 case 12:
1689 mask = 0x0c3;
1690 break;
1691 case 18:
1692 mask = 0x333;
1693 break;
1694 case 24:
1695 mask = 0x3ff;
1696 break;
1697 case 30:
1698 mask = 0xfff;
1699 break;
1700 default:
1701 mask = VINO_FRAMERT_FULL;
1702 }
1703 vcs->framert_reg = VINO_FRAMERT_RT(mask);
1704 break;
1705 case VINO_DATA_NORM_PAL:
1706 case VINO_DATA_NORM_SECAM:
1707 fps = (unsigned int)(fps / 5) * 5; // FIXME: round!
1708
1709 if (fps < vino_data_norms[vcs->data_norm].fps_min)
1710 fps = vino_data_norms[vcs->data_norm].fps_min;
1711 if (fps > vino_data_norms[vcs->data_norm].fps_max)
1712 fps = vino_data_norms[vcs->data_norm].fps_max;
1713
1714 switch (fps) {
1715 case 5:
1716 mask = 0x003;
1717 break;
1718 case 10:
1719 mask = 0x0c3;
1720 break;
1721 case 15:
1722 mask = 0x333;
1723 break;
1724 case 20:
1725 mask = 0x0ff;
1726 break;
1727 case 25:
1728 mask = 0x3ff;
1729 break;
1730 default:
1731 mask = VINO_FRAMERT_FULL;
1732 }
1733 vcs->framert_reg = VINO_FRAMERT_RT(mask) | VINO_FRAMERT_PAL;
1734 break;
1735 }
1736
1737 vcs->fps = fps;
1738 }
1739
1740 /* execute with input_lock locked */
1741 static inline void vino_set_default_framerate(struct
1742 vino_channel_settings *vcs)
1743 {
1744 vino_set_framerate(vcs, vino_data_norms[vcs->data_norm].fps_max);
1745 }
1746
1747 /*
1748 * Prepare VINO for DMA transfer...
1749 * (execute only with vino_lock and input_lock locked)
1750 */
1751 static int vino_dma_setup(struct vino_channel_settings *vcs,
1752 struct vino_framebuffer *fb)
1753 {
1754 u32 ctrl, intr;
1755 struct sgi_vino_channel *ch;
1756 const struct vino_data_norm *norm;
1757
1758 dprintk("vino_dma_setup():\n");
1759
1760 vcs->field = 0;
1761 fb->frame_counter = 0;
1762
1763 ch = (vcs->channel == VINO_CHANNEL_A) ? &vino->a : &vino->b;
1764 norm = &vino_data_norms[vcs->data_norm];
1765
1766 ch->page_index = 0;
1767 ch->line_count = 0;
1768
1769 /* VINO line size register is set 8 bytes less than actual */
1770 ch->line_size = vcs->line_size - 8;
1771
1772 /* let VINO know where to transfer data */
1773 ch->start_desc_tbl = fb->desc_table.dma;
1774 ch->next_4_desc = fb->desc_table.dma;
1775
1776 /* give vino time to fetch the first four descriptors, 5 usec
1777 * should be more than enough time */
1778 udelay(VINO_DESC_FETCH_DELAY);
1779
1780 dprintk("vino_dma_setup(): start desc = %08x, next 4 desc = %08x\n",
1781 ch->start_desc_tbl, ch->next_4_desc);
1782
1783 /* set the alpha register */
1784 ch->alpha = vcs->alpha;
1785
1786 /* set clipping registers */
1787 ch->clip_start = VINO_CLIP_ODD(norm->odd.top + vcs->clipping.top / 2) |
1788 VINO_CLIP_EVEN(norm->even.top +
1789 vcs->clipping.top / 2) |
1790 VINO_CLIP_X(vcs->clipping.left);
1791 ch->clip_end = VINO_CLIP_ODD(norm->odd.top +
1792 vcs->clipping.bottom / 2 - 1) |
1793 VINO_CLIP_EVEN(norm->even.top +
1794 vcs->clipping.bottom / 2 - 1) |
1795 VINO_CLIP_X(vcs->clipping.right);
1796
1797 /* set the size of actual content in the buffer (DECIMATION !) */
1798 fb->data_size = ((vcs->clipping.right - vcs->clipping.left) /
1799 vcs->decimation) *
1800 ((vcs->clipping.bottom - vcs->clipping.top) /
1801 vcs->decimation) *
1802 vino_data_formats[vcs->data_format].bpp;
1803
1804 ch->frame_rate = vcs->framert_reg;
1805
1806 ctrl = vino->control;
1807 intr = vino->intr_status;
1808
1809 if (vcs->channel == VINO_CHANNEL_A) {
1810 /* All interrupt conditions for this channel was cleared
1811 * so clear the interrupt status register and enable
1812 * interrupts */
1813 intr &= ~VINO_INTSTAT_A;
1814 ctrl |= VINO_CTRL_A_INT;
1815
1816 /* enable synchronization */
1817 ctrl |= VINO_CTRL_A_SYNC_ENBL;
1818
1819 /* enable frame assembly */
1820 ctrl |= VINO_CTRL_A_INTERLEAVE_ENBL;
1821
1822 /* set decimation used */
1823 if (vcs->decimation < 2)
1824 ctrl &= ~VINO_CTRL_A_DEC_ENBL;
1825 else {
1826 ctrl |= VINO_CTRL_A_DEC_ENBL;
1827 ctrl &= ~VINO_CTRL_A_DEC_SCALE_MASK;
1828 ctrl |= (vcs->decimation - 1) <<
1829 VINO_CTRL_A_DEC_SCALE_SHIFT;
1830 }
1831
1832 /* select input interface */
1833 if (vcs->input == VINO_INPUT_D1)
1834 ctrl |= VINO_CTRL_A_SELECT;
1835 else
1836 ctrl &= ~VINO_CTRL_A_SELECT;
1837
1838 /* palette */
1839 ctrl &= ~(VINO_CTRL_A_LUMA_ONLY | VINO_CTRL_A_RGB |
1840 VINO_CTRL_A_DITHER);
1841 } else {
1842 intr &= ~VINO_INTSTAT_B;
1843 ctrl |= VINO_CTRL_B_INT;
1844
1845 ctrl |= VINO_CTRL_B_SYNC_ENBL;
1846 ctrl |= VINO_CTRL_B_INTERLEAVE_ENBL;
1847
1848 if (vcs->decimation < 2)
1849 ctrl &= ~VINO_CTRL_B_DEC_ENBL;
1850 else {
1851 ctrl |= VINO_CTRL_B_DEC_ENBL;
1852 ctrl &= ~VINO_CTRL_B_DEC_SCALE_MASK;
1853 ctrl |= (vcs->decimation - 1) <<
1854 VINO_CTRL_B_DEC_SCALE_SHIFT;
1855
1856 }
1857 if (vcs->input == VINO_INPUT_D1)
1858 ctrl |= VINO_CTRL_B_SELECT;
1859 else
1860 ctrl &= ~VINO_CTRL_B_SELECT;
1861
1862 ctrl &= ~(VINO_CTRL_B_LUMA_ONLY | VINO_CTRL_B_RGB |
1863 VINO_CTRL_B_DITHER);
1864 }
1865
1866 /* set palette */
1867 fb->data_format = vcs->data_format;
1868
1869 switch (vcs->data_format) {
1870 case VINO_DATA_FMT_GREY:
1871 ctrl |= (vcs->channel == VINO_CHANNEL_A) ?
1872 VINO_CTRL_A_LUMA_ONLY : VINO_CTRL_B_LUMA_ONLY;
1873 break;
1874 case VINO_DATA_FMT_RGB32:
1875 ctrl |= (vcs->channel == VINO_CHANNEL_A) ?
1876 VINO_CTRL_A_RGB : VINO_CTRL_B_RGB;
1877 break;
1878 case VINO_DATA_FMT_YUV:
1879 /* nothing needs to be done */
1880 break;
1881 case VINO_DATA_FMT_RGB332:
1882 ctrl |= (vcs->channel == VINO_CHANNEL_A) ?
1883 VINO_CTRL_A_RGB | VINO_CTRL_A_DITHER :
1884 VINO_CTRL_B_RGB | VINO_CTRL_B_DITHER;
1885 break;
1886 }
1887
1888 vino->intr_status = intr;
1889 vino->control = ctrl;
1890
1891 return 0;
1892 }
1893
1894 /* (execute only with vino_lock locked) */
1895 static inline void vino_dma_start(struct vino_channel_settings *vcs)
1896 {
1897 u32 ctrl = vino->control;
1898
1899 dprintk("vino_dma_start():\n");
1900 ctrl |= (vcs->channel == VINO_CHANNEL_A) ?
1901 VINO_CTRL_A_DMA_ENBL : VINO_CTRL_B_DMA_ENBL;
1902 vino->control = ctrl;
1903 }
1904
1905 /* (execute only with vino_lock locked) */
1906 static inline void vino_dma_stop(struct vino_channel_settings *vcs)
1907 {
1908 u32 ctrl = vino->control;
1909
1910 ctrl &= (vcs->channel == VINO_CHANNEL_A) ?
1911 ~VINO_CTRL_A_DMA_ENBL : ~VINO_CTRL_B_DMA_ENBL;
1912 ctrl &= (vcs->channel == VINO_CHANNEL_A) ?
1913 ~VINO_CTRL_A_INT : ~VINO_CTRL_B_INT;
1914 vino->control = ctrl;
1915 dprintk("vino_dma_stop():\n");
1916 }
1917
1918 /*
1919 * Load dummy page to descriptor registers. This prevents generating of
1920 * spurious interrupts. (execute only with vino_lock locked)
1921 */
1922 static void vino_clear_interrupt(struct vino_channel_settings *vcs)
1923 {
1924 struct sgi_vino_channel *ch;
1925
1926 ch = (vcs->channel == VINO_CHANNEL_A) ? &vino->a : &vino->b;
1927
1928 ch->page_index = 0;
1929 ch->line_count = 0;
1930
1931 ch->start_desc_tbl = vino_drvdata->dummy_desc_table.dma;
1932 ch->next_4_desc = vino_drvdata->dummy_desc_table.dma;
1933
1934 udelay(VINO_DESC_FETCH_DELAY);
1935 dprintk("channel %c clear interrupt condition\n",
1936 (vcs->channel == VINO_CHANNEL_A) ? 'A':'B');
1937 }
1938
1939 static int vino_capture(struct vino_channel_settings *vcs,
1940 struct vino_framebuffer *fb)
1941 {
1942 int err = 0;
1943 unsigned long flags, flags2;
1944
1945 spin_lock_irqsave(&fb->state_lock, flags);
1946
1947 if (fb->state == VINO_FRAMEBUFFER_IN_USE)
1948 err = -EBUSY;
1949 fb->state = VINO_FRAMEBUFFER_IN_USE;
1950
1951 spin_unlock_irqrestore(&fb->state_lock, flags);
1952
1953 if (err)
1954 return err;
1955
1956 spin_lock_irqsave(&vino_drvdata->vino_lock, flags);
1957 spin_lock_irqsave(&vino_drvdata->input_lock, flags2);
1958
1959 vino_dma_setup(vcs, fb);
1960 vino_dma_start(vcs);
1961
1962 spin_unlock_irqrestore(&vino_drvdata->input_lock, flags2);
1963 spin_unlock_irqrestore(&vino_drvdata->vino_lock, flags);
1964
1965 return err;
1966 }
1967
1968 static
1969 struct vino_framebuffer *vino_capture_enqueue(struct
1970 vino_channel_settings *vcs,
1971 unsigned int index)
1972 {
1973 struct vino_framebuffer *fb;
1974 unsigned long flags;
1975
1976 dprintk("vino_capture_enqueue():\n");
1977
1978 spin_lock_irqsave(&vcs->capture_lock, flags);
1979
1980 fb = vino_queue_add(&vcs->fb_queue, index);
1981 if (fb == NULL) {
1982 dprintk("vino_capture_enqueue(): vino_queue_add() failed, "
1983 "queue full?\n");
1984 goto out;
1985 }
1986 out:
1987 spin_unlock_irqrestore(&vcs->capture_lock, flags);
1988
1989 return fb;
1990 }
1991
1992 static int vino_capture_next(struct vino_channel_settings *vcs, int start)
1993 {
1994 struct vino_framebuffer *fb;
1995 unsigned int incoming, id;
1996 int err = 0;
1997 unsigned long flags;
1998
1999 dprintk("vino_capture_next():\n");
2000
2001 spin_lock_irqsave(&vcs->capture_lock, flags);
2002
2003 if (start) {
2004 /* start capture only if capture isn't in progress already */
2005 if (vcs->capturing) {
2006 spin_unlock_irqrestore(&vcs->capture_lock, flags);
2007 return 0;
2008 }
2009
2010 } else {
2011 /* capture next frame:
2012 * stop capture if capturing is not set */
2013 if (!vcs->capturing) {
2014 spin_unlock_irqrestore(&vcs->capture_lock, flags);
2015 return 0;
2016 }
2017 }
2018
2019 err = vino_queue_get_incoming(&vcs->fb_queue, &incoming);
2020 if (err) {
2021 dprintk("vino_capture_next(): vino_queue_get_incoming() "
2022 "failed\n");
2023 err = -EINVAL;
2024 goto out;
2025 }
2026 if (incoming == 0) {
2027 dprintk("vino_capture_next(): no buffers available\n");
2028 goto out;
2029 }
2030
2031 fb = vino_queue_peek(&vcs->fb_queue, &id);
2032 if (fb == NULL) {
2033 dprintk("vino_capture_next(): vino_queue_peek() failed\n");
2034 err = -EINVAL;
2035 goto out;
2036 }
2037
2038 if (start) {
2039 vcs->capturing = 1;
2040 }
2041
2042 spin_unlock_irqrestore(&vcs->capture_lock, flags);
2043
2044 err = vino_capture(vcs, fb);
2045
2046 return err;
2047
2048 out:
2049 vcs->capturing = 0;
2050 spin_unlock_irqrestore(&vcs->capture_lock, flags);
2051
2052 return err;
2053 }
2054
2055 static inline int vino_is_capturing(struct vino_channel_settings *vcs)
2056 {
2057 int ret;
2058 unsigned long flags;
2059
2060 spin_lock_irqsave(&vcs->capture_lock, flags);
2061
2062 ret = vcs->capturing;
2063
2064 spin_unlock_irqrestore(&vcs->capture_lock, flags);
2065
2066 return ret;
2067 }
2068
2069 /* waits until a frame is captured */
2070 static int vino_wait_for_frame(struct vino_channel_settings *vcs)
2071 {
2072 wait_queue_t wait;
2073 int err = 0;
2074
2075 dprintk("vino_wait_for_frame():\n");
2076
2077 init_waitqueue_entry(&wait, current);
2078 /* add ourselves into wait queue */
2079 add_wait_queue(&vcs->fb_queue.frame_wait_queue, &wait);
2080 /* and set current state */
2081 set_current_state(TASK_INTERRUPTIBLE);
2082
2083 /* to ensure that schedule_timeout will return immediately
2084 * if VINO interrupt was triggred meanwhile */
2085 schedule_timeout(HZ / 10);
2086
2087 if (signal_pending(current))
2088 err = -EINTR;
2089
2090 remove_wait_queue(&vcs->fb_queue.frame_wait_queue, &wait);
2091
2092 dprintk("vino_wait_for_frame(): waiting for frame %s\n",
2093 err ? "failed" : "ok");
2094
2095 return err;
2096 }
2097
2098 /* the function assumes that PAGE_SIZE % 4 == 0 */
2099 static void vino_convert_to_rgba(struct vino_framebuffer *fb) {
2100 unsigned char *pageptr;
2101 unsigned int page, i;
2102 unsigned char a;
2103
2104 for (page = 0; page < fb->desc_table.page_count; page++) {
2105 pageptr = (unsigned char *)fb->desc_table.virtual[page];
2106
2107 for (i = 0; i < PAGE_SIZE; i += 4) {
2108 a = pageptr[0];
2109 pageptr[0] = pageptr[3];
2110 pageptr[1] = pageptr[2];
2111 pageptr[2] = pageptr[1];
2112 pageptr[3] = a;
2113 pageptr += 4;
2114 }
2115 }
2116 }
2117
2118 /* checks if the buffer is in correct state and syncs data */
2119 static int vino_check_buffer(struct vino_channel_settings *vcs,
2120 struct vino_framebuffer *fb)
2121 {
2122 int err = 0;
2123 unsigned long flags;
2124
2125 dprintk("vino_check_buffer():\n");
2126
2127 spin_lock_irqsave(&fb->state_lock, flags);
2128 switch (fb->state) {
2129 case VINO_FRAMEBUFFER_IN_USE:
2130 err = -EIO;
2131 break;
2132 case VINO_FRAMEBUFFER_READY:
2133 vino_sync_buffer(fb);
2134 fb->state = VINO_FRAMEBUFFER_UNUSED;
2135 break;
2136 default:
2137 err = -EINVAL;
2138 }
2139 spin_unlock_irqrestore(&fb->state_lock, flags);
2140
2141 if (!err) {
2142 if (vino_pixel_conversion
2143 && (fb->data_format == VINO_DATA_FMT_RGB32)) {
2144 vino_convert_to_rgba(fb);
2145 }
2146 } else if (err && (err != -EINVAL)) {
2147 dprintk("vino_check_buffer(): buffer not ready\n");
2148
2149 spin_lock_irqsave(&vino_drvdata->vino_lock, flags);
2150 vino_dma_stop(vcs);
2151 vino_clear_interrupt(vcs);
2152 spin_unlock_irqrestore(&vino_drvdata->vino_lock, flags);
2153 }
2154
2155 return err;
2156 }
2157
2158 /* forcefully terminates capture */
2159 static void vino_capture_stop(struct vino_channel_settings *vcs)
2160 {
2161 unsigned int incoming = 0, outgoing = 0, id;
2162 unsigned long flags, flags2;
2163
2164 dprintk("vino_capture_stop():\n");
2165
2166 spin_lock_irqsave(&vcs->capture_lock, flags);
2167
2168 /* unset capturing to stop queue processing */
2169 vcs->capturing = 0;
2170
2171 spin_lock_irqsave(&vino_drvdata->vino_lock, flags2);
2172
2173 vino_dma_stop(vcs);
2174 vino_clear_interrupt(vcs);
2175
2176 spin_unlock_irqrestore(&vino_drvdata->vino_lock, flags2);
2177
2178 /* remove all items from the queue */
2179 if (vino_queue_get_incoming(&vcs->fb_queue, &incoming)) {
2180 dprintk("vino_capture_stop(): "
2181 "vino_queue_get_incoming() failed\n");
2182 goto out;
2183 }
2184 while (incoming > 0) {
2185 vino_queue_transfer(&vcs->fb_queue);
2186
2187 if (vino_queue_get_incoming(&vcs->fb_queue, &incoming)) {
2188 dprintk("vino_capture_stop(): "
2189 "vino_queue_get_incoming() failed\n");
2190 goto out;
2191 }
2192 }
2193
2194 if (vino_queue_get_outgoing(&vcs->fb_queue, &outgoing)) {
2195 dprintk("vino_capture_stop(): "
2196 "vino_queue_get_outgoing() failed\n");
2197 goto out;
2198 }
2199 while (outgoing > 0) {
2200 vino_queue_remove(&vcs->fb_queue, &id);
2201
2202 if (vino_queue_get_outgoing(&vcs->fb_queue, &outgoing)) {
2203 dprintk("vino_capture_stop(): "
2204 "vino_queue_get_outgoing() failed\n");
2205 goto out;
2206 }
2207 }
2208
2209 out:
2210 spin_unlock_irqrestore(&vcs->capture_lock, flags);
2211 }
2212
2213 #if 0
2214 static int vino_capture_failed(struct vino_channel_settings *vcs)
2215 {
2216 struct vino_framebuffer *fb;
2217 unsigned long flags;
2218 unsigned int i;
2219 int ret;
2220
2221 dprintk("vino_capture_failed():\n");
2222
2223 spin_lock_irqsave(&vino_drvdata->vino_lock, flags);
2224
2225 vino_dma_stop(vcs);
2226 vino_clear_interrupt(vcs);
2227
2228 spin_unlock_irqrestore(&vino_drvdata->vino_lock, flags);
2229
2230 ret = vino_queue_get_incoming(&vcs->fb_queue, &i);
2231 if (ret == VINO_QUEUE_ERROR) {
2232 dprintk("vino_queue_get_incoming() failed\n");
2233 return -EINVAL;
2234 }
2235 if (i == 0) {
2236 /* no buffers to process */
2237 return 0;
2238 }
2239
2240 fb = vino_queue_peek(&vcs->fb_queue, &i);
2241 if (fb == NULL) {
2242 dprintk("vino_queue_peek() failed\n");
2243 return -EINVAL;
2244 }
2245
2246 spin_lock_irqsave(&fb->state_lock, flags);
2247 if (fb->state == VINO_FRAMEBUFFER_IN_USE) {
2248 fb->state = VINO_FRAMEBUFFER_UNUSED;
2249 vino_queue_transfer(&vcs->fb_queue);
2250 vino_queue_remove(&vcs->fb_queue, &i);
2251 /* we should actually discard the newest frame,
2252 * but who cares ... */
2253 }
2254 spin_unlock_irqrestore(&fb->state_lock, flags);
2255
2256 return 0;
2257 }
2258 #endif
2259
2260 static void vino_skip_frame(struct vino_channel_settings *vcs)
2261 {
2262 struct vino_framebuffer *fb;
2263 unsigned long flags;
2264 unsigned int id;
2265
2266 spin_lock_irqsave(&vcs->capture_lock, flags);
2267 fb = vino_queue_peek(&vcs->fb_queue, &id);
2268 if (!fb) {
2269 spin_unlock_irqrestore(&vcs->capture_lock, flags);
2270 dprintk("vino_skip_frame(): vino_queue_peek() failed!\n");
2271 return;
2272 }
2273 spin_unlock_irqrestore(&vcs->capture_lock, flags);
2274
2275 spin_lock_irqsave(&fb->state_lock, flags);
2276 fb->state = VINO_FRAMEBUFFER_UNUSED;
2277 spin_unlock_irqrestore(&fb->state_lock, flags);
2278
2279 vino_capture_next(vcs, 0);
2280 }
2281
2282 static void vino_frame_done(struct vino_channel_settings *vcs)
2283 {
2284 struct vino_framebuffer *fb;
2285 unsigned long flags;
2286
2287 spin_lock_irqsave(&vcs->capture_lock, flags);
2288 fb = vino_queue_transfer(&vcs->fb_queue);
2289 if (!fb) {
2290 spin_unlock_irqrestore(&vcs->capture_lock, flags);
2291 dprintk("vino_frame_done(): vino_queue_transfer() failed!\n");
2292 return;
2293 }
2294 spin_unlock_irqrestore(&vcs->capture_lock, flags);
2295
2296 fb->frame_counter = vcs->int_data.frame_counter;
2297 memcpy(&fb->timestamp, &vcs->int_data.timestamp,
2298 sizeof(struct timeval));
2299
2300 spin_lock_irqsave(&fb->state_lock, flags);
2301 if (fb->state == VINO_FRAMEBUFFER_IN_USE)
2302 fb->state = VINO_FRAMEBUFFER_READY;
2303 spin_unlock_irqrestore(&fb->state_lock, flags);
2304
2305 wake_up(&vcs->fb_queue.frame_wait_queue);
2306
2307 vino_capture_next(vcs, 0);
2308 }
2309
2310 static void vino_capture_tasklet(unsigned long channel) {
2311 struct vino_channel_settings *vcs;
2312
2313 vcs = (channel == VINO_CHANNEL_A)
2314 ? &vino_drvdata->a : &vino_drvdata->b;
2315
2316 if (vcs->int_data.skip)
2317 vcs->int_data.skip_count++;
2318
2319 if (vcs->int_data.skip && (vcs->int_data.skip_count
2320 <= VINO_MAX_FRAME_SKIP_COUNT)) {
2321 vino_skip_frame(vcs);
2322 } else {
2323 vcs->int_data.skip_count = 0;
2324 vino_frame_done(vcs);
2325 }
2326 }
2327
2328 static irqreturn_t vino_interrupt(int irq, void *dev_id)
2329 {
2330 u32 ctrl, intr;
2331 unsigned int fc_a, fc_b;
2332 int handled_a = 0, skip_a = 0, done_a = 0;
2333 int handled_b = 0, skip_b = 0, done_b = 0;
2334
2335 #ifdef VINO_DEBUG_INT
2336 int loop = 0;
2337 unsigned int line_count = vino->a.line_count,
2338 page_index = vino->a.page_index,
2339 field_counter = vino->a.field_counter,
2340 start_desc_tbl = vino->a.start_desc_tbl,
2341 next_4_desc = vino->a.next_4_desc;
2342 unsigned int line_count_2,
2343 page_index_2,
2344 field_counter_2,
2345 start_desc_tbl_2,
2346 next_4_desc_2;
2347 #endif
2348
2349 spin_lock(&vino_drvdata->vino_lock);
2350
2351 while ((intr = vino->intr_status)) {
2352 fc_a = vino->a.field_counter >> 1;
2353 fc_b = vino->b.field_counter >> 1;
2354
2355 /* handle error-interrupts in some special way ?
2356 * --> skips frames */
2357 if (intr & VINO_INTSTAT_A) {
2358 if (intr & VINO_INTSTAT_A_EOF) {
2359 vino_drvdata->a.field++;
2360 if (vino_drvdata->a.field > 1) {
2361 vino_dma_stop(&vino_drvdata->a);
2362 vino_clear_interrupt(&vino_drvdata->a);
2363 vino_drvdata->a.field = 0;
2364 done_a = 1;
2365 } else {
2366 if (vino->a.page_index
2367 != vino_drvdata->a.line_size) {
2368 vino->a.line_count = 0;
2369 vino->a.page_index =
2370 vino_drvdata->
2371 a.line_size;
2372 vino->a.next_4_desc =
2373 vino->a.start_desc_tbl;
2374 }
2375 }
2376 dprintk("channel A end-of-field "
2377 "interrupt: %04x\n", intr);
2378 } else {
2379 vino_dma_stop(&vino_drvdata->a);
2380 vino_clear_interrupt(&vino_drvdata->a);
2381 vino_drvdata->a.field = 0;
2382 skip_a = 1;
2383 dprintk("channel A error interrupt: %04x\n",
2384 intr);
2385 }
2386
2387 #ifdef VINO_DEBUG_INT
2388 line_count_2 = vino->a.line_count;
2389 page_index_2 = vino->a.page_index;
2390 field_counter_2 = vino->a.field_counter;
2391 start_desc_tbl_2 = vino->a.start_desc_tbl;
2392 next_4_desc_2 = vino->a.next_4_desc;
2393
2394 printk("intr = %04x, loop = %d, field = %d\n",
2395 intr, loop, vino_drvdata->a.field);
2396 printk("1- line count = %04d, page index = %04d, "
2397 "start = %08x, next = %08x\n"
2398 " fieldc = %d, framec = %d\n",
2399 line_count, page_index, start_desc_tbl,
2400 next_4_desc, field_counter, fc_a);
2401 printk("12-line count = %04d, page index = %04d, "
2402 " start = %08x, next = %08x\n",
2403 line_count_2, page_index_2, start_desc_tbl_2,
2404 next_4_desc_2);
2405
2406 if (done_a)
2407 printk("\n");
2408 #endif
2409 }
2410
2411 if (intr & VINO_INTSTAT_B) {
2412 if (intr & VINO_INTSTAT_B_EOF) {
2413 vino_drvdata->b.field++;
2414 if (vino_drvdata->b.field > 1) {
2415 vino_dma_stop(&vino_drvdata->b);
2416 vino_clear_interrupt(&vino_drvdata->b);
2417 vino_drvdata->b.field = 0;
2418 done_b = 1;
2419 }
2420 dprintk("channel B end-of-field "
2421 "interrupt: %04x\n", intr);
2422 } else {
2423 vino_dma_stop(&vino_drvdata->b);
2424 vino_clear_interrupt(&vino_drvdata->b);
2425 vino_drvdata->b.field = 0;
2426 skip_b = 1;
2427 dprintk("channel B error interrupt: %04x\n",
2428 intr);
2429 }
2430 }
2431
2432 /* Always remember to clear interrupt status.
2433 * Disable VINO interrupts while we do this. */
2434 ctrl = vino->control;
2435 vino->control = ctrl & ~(VINO_CTRL_A_INT | VINO_CTRL_B_INT);
2436 vino->intr_status = ~intr;
2437 vino->control = ctrl;
2438
2439 spin_unlock(&vino_drvdata->vino_lock);
2440
2441 if ((!handled_a) && (done_a || skip_a)) {
2442 if (!skip_a) {
2443 do_gettimeofday(&vino_drvdata->
2444 a.int_data.timestamp);
2445 vino_drvdata->a.int_data.frame_counter = fc_a;
2446 }
2447 vino_drvdata->a.int_data.skip = skip_a;
2448
2449 dprintk("channel A %s, interrupt: %d\n",
2450 skip_a ? "skipping frame" : "frame done",
2451 intr);
2452 tasklet_hi_schedule(&vino_tasklet_a);
2453 handled_a = 1;
2454 }
2455
2456 if ((!handled_b) && (done_b || skip_b)) {
2457 if (!skip_b) {
2458 do_gettimeofday(&vino_drvdata->
2459 b.int_data.timestamp);
2460 vino_drvdata->b.int_data.frame_counter = fc_b;
2461 }
2462 vino_drvdata->b.int_data.skip = skip_b;
2463
2464 dprintk("channel B %s, interrupt: %d\n",
2465 skip_b ? "skipping frame" : "frame done",
2466 intr);
2467 tasklet_hi_schedule(&vino_tasklet_b);
2468 handled_b = 1;
2469 }
2470
2471 #ifdef VINO_DEBUG_INT
2472 loop++;
2473 #endif
2474 spin_lock(&vino_drvdata->vino_lock);
2475 }
2476
2477 spin_unlock(&vino_drvdata->vino_lock);
2478
2479 return IRQ_HANDLED;
2480 }
2481
2482 /* VINO video input management */
2483
2484 static int vino_get_saa7191_input(int input)
2485 {
2486 switch (input) {
2487 case VINO_INPUT_COMPOSITE:
2488 return SAA7191_INPUT_COMPOSITE;
2489 case VINO_INPUT_SVIDEO:
2490 return SAA7191_INPUT_SVIDEO;
2491 default:
2492 printk(KERN_ERR "VINO: vino_get_saa7191_input(): "
2493 "invalid input!\n");
2494 return -1;
2495 }
2496 }
2497
2498 static int vino_get_saa7191_norm(unsigned int data_norm)
2499 {
2500 switch (data_norm) {
2501 case VINO_DATA_NORM_AUTO:
2502 return SAA7191_NORM_AUTO;
2503 case VINO_DATA_NORM_AUTO_EXT:
2504 return SAA7191_NORM_AUTO_EXT;
2505 case VINO_DATA_NORM_PAL:
2506 return SAA7191_NORM_PAL;
2507 case VINO_DATA_NORM_NTSC:
2508 return SAA7191_NORM_NTSC;
2509 case VINO_DATA_NORM_SECAM:
2510 return SAA7191_NORM_SECAM;
2511 default:
2512 printk(KERN_ERR "VINO: vino_get_saa7191_norm(): "
2513 "invalid norm!\n");
2514 return -1;
2515 }
2516 }
2517
2518 static int vino_get_from_saa7191_norm(int saa7191_norm)
2519 {
2520 switch (saa7191_norm) {
2521 case SAA7191_NORM_PAL:
2522 return VINO_DATA_NORM_PAL;
2523 case SAA7191_NORM_NTSC:
2524 return VINO_DATA_NORM_NTSC;
2525 case SAA7191_NORM_SECAM:
2526 return VINO_DATA_NORM_SECAM;
2527 default:
2528 printk(KERN_ERR "VINO: vino_get_from_saa7191_norm(): "
2529 "invalid norm!\n");
2530 return VINO_DATA_NORM_NONE;
2531 }
2532 }
2533
2534 static int vino_saa7191_set_norm(unsigned int *data_norm)
2535 {
2536 int saa7191_norm, new_data_norm;
2537 int err = 0;
2538
2539 saa7191_norm = vino_get_saa7191_norm(*data_norm);
2540
2541 err = i2c_decoder_command(DECODER_SAA7191_SET_NORM,
2542 &saa7191_norm);
2543 if (err)
2544 goto out;
2545
2546 if ((*data_norm == VINO_DATA_NORM_AUTO)
2547 || (*data_norm == VINO_DATA_NORM_AUTO_EXT)) {
2548 struct saa7191_status status;
2549
2550 err = i2c_decoder_command(DECODER_SAA7191_GET_STATUS,
2551 &status);
2552 if (err)
2553 goto out;
2554
2555 new_data_norm =
2556 vino_get_from_saa7191_norm(status.norm);
2557 if (new_data_norm == VINO_DATA_NORM_NONE) {
2558 err = -EINVAL;
2559 goto out;
2560 }
2561
2562 *data_norm = (unsigned int)new_data_norm;
2563 }
2564
2565 out:
2566 return err;
2567 }
2568
2569 /* execute with input_lock locked */
2570 static int vino_is_input_owner(struct vino_channel_settings *vcs)
2571 {
2572 switch(vcs->input) {
2573 case VINO_INPUT_COMPOSITE:
2574 case VINO_INPUT_SVIDEO:
2575 return (vino_drvdata->decoder.owner == vcs->channel);
2576 case VINO_INPUT_D1:
2577 return (vino_drvdata->camera.owner == vcs->channel);
2578 default:
2579 return 0;
2580 }
2581 }
2582
2583 static int vino_acquire_input(struct vino_channel_settings *vcs)
2584 {
2585 unsigned long flags;
2586 int ret = 0;
2587
2588 dprintk("vino_acquire_input():\n");
2589
2590 spin_lock_irqsave(&vino_drvdata->input_lock, flags);
2591
2592 /* First try D1 and then SAA7191 */
2593 if (vino_drvdata->camera.driver
2594 && (vino_drvdata->camera.owner == VINO_NO_CHANNEL)) {
2595 if (i2c_use_client(vino_drvdata->camera.driver)) {
2596 ret = -ENODEV;
2597 goto out;
2598 }
2599
2600 vino_drvdata->camera.owner = vcs->channel;
2601 vcs->input = VINO_INPUT_D1;
2602 vcs->data_norm = VINO_DATA_NORM_D1;
2603 } else if (vino_drvdata->decoder.driver
2604 && (vino_drvdata->decoder.owner == VINO_NO_CHANNEL)) {
2605 int input, data_norm;
2606 int saa7191_input;
2607
2608 if (i2c_use_client(vino_drvdata->decoder.driver)) {
2609 ret = -ENODEV;
2610 goto out;
2611 }
2612
2613 input = VINO_INPUT_COMPOSITE;
2614
2615 saa7191_input = vino_get_saa7191_input(input);
2616 ret = i2c_decoder_command(DECODER_SET_INPUT,
2617 &saa7191_input);
2618 if (ret) {
2619 ret = -EINVAL;
2620 goto out;
2621 }
2622
2623 spin_unlock_irqrestore(&vino_drvdata->input_lock, flags);
2624
2625 /* Don't hold spinlocks while auto-detecting norm
2626 * as it may take a while... */
2627
2628 data_norm = VINO_DATA_NORM_AUTO_EXT;
2629
2630 ret = vino_saa7191_set_norm(&data_norm);
2631 if ((ret == -EBUSY) || (ret == -EAGAIN)) {
2632 data_norm = VINO_DATA_NORM_PAL;
2633 ret = vino_saa7191_set_norm(&data_norm);
2634 }
2635
2636 spin_lock_irqsave(&vino_drvdata->input_lock, flags);
2637
2638 if (ret) {
2639 ret = -EINVAL;
2640 goto out;
2641 }
2642
2643 vino_drvdata->decoder.owner = vcs->channel;
2644
2645 vcs->input = input;
2646 vcs->data_norm = data_norm;
2647 } else {
2648 vcs->input = (vcs->channel == VINO_CHANNEL_A) ?
2649 vino_drvdata->b.input : vino_drvdata->a.input;
2650 vcs->data_norm = (vcs->channel == VINO_CHANNEL_A) ?
2651 vino_drvdata->b.data_norm : vino_drvdata->a.data_norm;
2652 }
2653
2654 if (vcs->input == VINO_INPUT_NONE) {
2655 ret = -ENODEV;
2656 goto out;
2657 }
2658
2659 vino_set_default_clipping(vcs);
2660 vino_set_default_scaling(vcs);
2661 vino_set_default_framerate(vcs);
2662
2663 dprintk("vino_acquire_input(): %s\n", vino_inputs[vcs->input].name);
2664
2665 out:
2666 spin_unlock_irqrestore(&vino_drvdata->input_lock, flags);
2667
2668 return ret;
2669 }
2670
2671 static int vino_set_input(struct vino_channel_settings *vcs, int input)
2672 {
2673 struct vino_channel_settings *vcs2 = (vcs->channel == VINO_CHANNEL_A) ?
2674 &vino_drvdata->b : &vino_drvdata->a;
2675 unsigned long flags;
2676 int ret = 0;
2677
2678 dprintk("vino_set_input():\n");
2679
2680 spin_lock_irqsave(&vino_drvdata->input_lock, flags);
2681
2682 if (vcs->input == input)
2683 goto out;
2684
2685 switch (input) {
2686 case VINO_INPUT_COMPOSITE:
2687 case VINO_INPUT_SVIDEO:
2688 if (!vino_drvdata->decoder.driver) {
2689 ret = -EINVAL;
2690 goto out;
2691 }
2692
2693 if (vino_drvdata->decoder.owner == VINO_NO_CHANNEL) {
2694 if (i2c_use_client(vino_drvdata->decoder.driver)) {
2695 ret = -ENODEV;
2696 goto out;
2697 }
2698 vino_drvdata->decoder.owner = vcs->channel;
2699 }
2700
2701 if (vino_drvdata->decoder.owner == vcs->channel) {
2702 int data_norm;
2703 int saa7191_input;
2704
2705 saa7191_input = vino_get_saa7191_input(input);
2706 ret = i2c_decoder_command(DECODER_SET_INPUT,
2707 &saa7191_input);
2708 if (ret) {
2709 vino_drvdata->decoder.owner = VINO_NO_CHANNEL;
2710 ret = -EINVAL;
2711 goto out;
2712 }
2713
2714 spin_unlock_irqrestore(&vino_drvdata->input_lock, flags);
2715
2716 /* Don't hold spinlocks while auto-detecting norm
2717 * as it may take a while... */
2718
2719 data_norm = VINO_DATA_NORM_AUTO_EXT;
2720
2721 ret = vino_saa7191_set_norm(&data_norm);
2722 if ((ret == -EBUSY) || (ret == -EAGAIN)) {
2723 data_norm = VINO_DATA_NORM_PAL;
2724 ret = vino_saa7191_set_norm(&data_norm);
2725 }
2726
2727 spin_lock_irqsave(&vino_drvdata->input_lock, flags);
2728
2729 if (ret) {
2730 vino_drvdata->decoder.owner = VINO_NO_CHANNEL;
2731 ret = -EINVAL;
2732 goto out;
2733 }
2734
2735 vcs->input = input;
2736 vcs->data_norm = data_norm;
2737 } else {
2738 if (input != vcs2->input) {
2739 ret = -EBUSY;
2740 goto out;
2741 }
2742
2743 vcs->input = input;
2744 vcs->data_norm = vcs2->data_norm;
2745 }
2746
2747 if (vino_drvdata->camera.owner == vcs->channel) {
2748 /* Transfer the ownership or release the input */
2749 if (vcs2->input == VINO_INPUT_D1) {
2750 vino_drvdata->camera.owner = vcs2->channel;
2751 } else {
2752 i2c_release_client(vino_drvdata->
2753 camera.driver);
2754 vino_drvdata->camera.owner = VINO_NO_CHANNEL;
2755 }
2756 }
2757 break;
2758 case VINO_INPUT_D1:
2759 if (!vino_drvdata->camera.driver) {
2760 ret = -EINVAL;
2761 goto out;
2762 }
2763
2764 if (vino_drvdata->camera.owner == VINO_NO_CHANNEL) {
2765 if (i2c_use_client(vino_drvdata->camera.driver)) {
2766 ret = -ENODEV;
2767 goto out;
2768 }
2769 vino_drvdata->camera.owner = vcs->channel;
2770 }
2771
2772 if (vino_drvdata->decoder.owner == vcs->channel) {
2773 /* Transfer the ownership or release the input */
2774 if ((vcs2->input == VINO_INPUT_COMPOSITE) ||
2775 (vcs2->input == VINO_INPUT_SVIDEO)) {
2776 vino_drvdata->decoder.owner = vcs2->channel;
2777 } else {
2778 i2c_release_client(vino_drvdata->
2779 decoder.driver);
2780 vino_drvdata->decoder.owner = VINO_NO_CHANNEL;
2781 }
2782 }
2783
2784 vcs->input = input;
2785 vcs->data_norm = VINO_DATA_NORM_D1;
2786 break;
2787 default:
2788 ret = -EINVAL;
2789 goto out;
2790 }
2791
2792 vino_set_default_clipping(vcs);
2793 vino_set_default_scaling(vcs);
2794 vino_set_default_framerate(vcs);
2795
2796 dprintk("vino_set_input(): %s\n", vino_inputs[vcs->input].name);
2797
2798 out:
2799 spin_unlock_irqrestore(&vino_drvdata->input_lock, flags);
2800
2801 return ret;
2802 }
2803
2804 static void vino_release_input(struct vino_channel_settings *vcs)
2805 {
2806 struct vino_channel_settings *vcs2 = (vcs->channel == VINO_CHANNEL_A) ?
2807 &vino_drvdata->b : &vino_drvdata->a;
2808 unsigned long flags;
2809
2810 dprintk("vino_release_input():\n");
2811
2812 spin_lock_irqsave(&vino_drvdata->input_lock, flags);
2813
2814 /* Release ownership of the channel
2815 * and if the other channel takes input from
2816 * the same source, transfer the ownership */
2817 if (vino_drvdata->camera.owner == vcs->channel) {
2818 if (vcs2->input == VINO_INPUT_D1) {
2819 vino_drvdata->camera.owner = vcs2->channel;
2820 } else {
2821 i2c_release_client(vino_drvdata->camera.driver);
2822 vino_drvdata->camera.owner = VINO_NO_CHANNEL;
2823 }
2824 } else if (vino_drvdata->decoder.owner == vcs->channel) {
2825 if ((vcs2->input == VINO_INPUT_COMPOSITE) ||
2826 (vcs2->input == VINO_INPUT_SVIDEO)) {
2827 vino_drvdata->decoder.owner = vcs2->channel;
2828 } else {
2829 i2c_release_client(vino_drvdata->decoder.driver);
2830 vino_drvdata->decoder.owner = VINO_NO_CHANNEL;
2831 }
2832 }
2833 vcs->input = VINO_INPUT_NONE;
2834
2835 spin_unlock_irqrestore(&vino_drvdata->input_lock, flags);
2836 }
2837
2838 /* execute with input_lock locked */
2839 static int vino_set_data_norm(struct vino_channel_settings *vcs,
2840 unsigned int data_norm,
2841 unsigned long *flags)
2842 {
2843 int err = 0;
2844
2845 if (data_norm == vcs->data_norm)
2846 return 0;
2847
2848 switch (vcs->input) {
2849 case VINO_INPUT_D1:
2850 /* only one "norm" supported */
2851 if ((data_norm != VINO_DATA_NORM_D1)
2852 && (data_norm != VINO_DATA_NORM_AUTO)
2853 && (data_norm != VINO_DATA_NORM_AUTO_EXT))
2854 return -EINVAL;
2855 break;
2856 case VINO_INPUT_COMPOSITE:
2857 case VINO_INPUT_SVIDEO: {
2858 if ((data_norm != VINO_DATA_NORM_PAL)
2859 && (data_norm != VINO_DATA_NORM_NTSC)
2860 && (data_norm != VINO_DATA_NORM_SECAM)
2861 && (data_norm != VINO_DATA_NORM_AUTO)
2862 && (data_norm != VINO_DATA_NORM_AUTO_EXT))
2863 return -EINVAL;
2864
2865 spin_unlock_irqrestore(&vino_drvdata->input_lock, *flags);
2866
2867 /* Don't hold spinlocks while setting norm
2868 * as it may take a while... */
2869
2870 err = vino_saa7191_set_norm(&data_norm);
2871
2872 spin_lock_irqsave(&vino_drvdata->input_lock, *flags);
2873
2874 if (err)
2875 goto out;
2876
2877 vcs->data_norm = data_norm;
2878
2879 vino_set_default_clipping(vcs);
2880 vino_set_default_scaling(vcs);
2881 vino_set_default_framerate(vcs);
2882 break;
2883 }
2884 default:
2885 return -EINVAL;
2886 }
2887
2888 out:
2889 return err;
2890 }
2891
2892 /* V4L2 helper functions */
2893
2894 static int vino_find_data_format(__u32 pixelformat)
2895 {
2896 int i;
2897
2898 for (i = 0; i < VINO_DATA_FMT_COUNT; i++) {
2899 if (vino_data_formats[i].pixelformat == pixelformat)
2900 return i;
2901 }
2902
2903 return VINO_DATA_FMT_NONE;
2904 }
2905
2906 static int vino_enum_data_norm(struct vino_channel_settings *vcs, __u32 index)
2907 {
2908 int data_norm = VINO_DATA_NORM_NONE;
2909 unsigned long flags;
2910
2911 spin_lock_irqsave(&vino_drvdata->input_lock, flags);
2912 switch(vcs->input) {
2913 case VINO_INPUT_COMPOSITE:
2914 case VINO_INPUT_SVIDEO:
2915 if (index == 0) {
2916 data_norm = VINO_DATA_NORM_PAL;
2917 } else if (index == 1) {
2918 data_norm = VINO_DATA_NORM_NTSC;
2919 } else if (index == 2) {
2920 data_norm = VINO_DATA_NORM_SECAM;
2921 }
2922 break;
2923 case VINO_INPUT_D1:
2924 if (index == 0) {
2925 data_norm = VINO_DATA_NORM_D1;
2926 }
2927 break;
2928 }
2929 spin_unlock_irqrestore(&vino_drvdata->input_lock, flags);
2930
2931 return data_norm;
2932 }
2933
2934 static int vino_enum_input(struct vino_channel_settings *vcs, __u32 index)
2935 {
2936 int input = VINO_INPUT_NONE;
2937 unsigned long flags;
2938
2939 spin_lock_irqsave(&vino_drvdata->input_lock, flags);
2940 if (vino_drvdata->decoder.driver && vino_drvdata->camera.driver) {
2941 switch (index) {
2942 case 0:
2943 input = VINO_INPUT_COMPOSITE;
2944 break;
2945 case 1:
2946 input = VINO_INPUT_SVIDEO;
2947 break;
2948 case 2:
2949 input = VINO_INPUT_D1;
2950 break;
2951 }
2952 } else if (vino_drvdata->decoder.driver) {
2953 switch (index) {
2954 case 0:
2955 input = VINO_INPUT_COMPOSITE;
2956 break;
2957 case 1:
2958 input = VINO_INPUT_SVIDEO;
2959 break;
2960 }
2961 } else if (vino_drvdata->camera.driver) {
2962 switch (index) {
2963 case 0:
2964 input = VINO_INPUT_D1;
2965 break;
2966 }
2967 }
2968 spin_unlock_irqrestore(&vino_drvdata->input_lock, flags);
2969
2970 return input;
2971 }
2972
2973 /* execute with input_lock locked */
2974 static __u32 vino_find_input_index(struct vino_channel_settings *vcs)
2975 {
2976 __u32 index = 0;
2977 // FIXME: detect when no inputs available
2978
2979 if (vino_drvdata->decoder.driver && vino_drvdata->camera.driver) {
2980 switch (vcs->input) {
2981 case VINO_INPUT_COMPOSITE:
2982 index = 0;
2983 break;
2984 case VINO_INPUT_SVIDEO:
2985 index = 1;
2986 break;
2987 case VINO_INPUT_D1:
2988 index = 2;
2989 break;
2990 }
2991 } else if (vino_drvdata->decoder.driver) {
2992 switch (vcs->input) {
2993 case VINO_INPUT_COMPOSITE:
2994 index = 0;
2995 break;
2996 case VINO_INPUT_SVIDEO:
2997 index = 1;
2998 break;
2999 }
3000 } else if (vino_drvdata->camera.driver) {
3001 switch (vcs->input) {
3002 case VINO_INPUT_D1:
3003 index = 0;
3004 break;
3005 }
3006 }
3007
3008 return index;
3009 }
3010
3011 /* V4L2 ioctls */
3012
3013 static void vino_v4l2_querycap(struct v4l2_capability *cap)
3014 {
3015 memset(cap, 0, sizeof(struct v4l2_capability));
3016
3017 strcpy(cap->driver, vino_driver_name);
3018 strcpy(cap->card, vino_driver_description);
3019 strcpy(cap->bus_info, vino_bus_name);
3020 cap->version = VINO_VERSION_CODE;
3021 cap->capabilities =
3022 V4L2_CAP_VIDEO_CAPTURE |
3023 V4L2_CAP_STREAMING;
3024 // V4L2_CAP_OVERLAY, V4L2_CAP_READWRITE
3025 }
3026
3027 static int vino_v4l2_enuminput(struct vino_channel_settings *vcs,
3028 struct v4l2_input *i)
3029 {
3030 __u32 index = i->index;
3031 int input;
3032 dprintk("requested index = %d\n", index);
3033
3034 input = vino_enum_input(vcs, index);
3035 if (input == VINO_INPUT_NONE)
3036 return -EINVAL;
3037
3038 memset(i, 0, sizeof(struct v4l2_input));
3039
3040 i->index = index;
3041 i->type = V4L2_INPUT_TYPE_CAMERA;
3042 i->std = vino_inputs[input].std;
3043 strcpy(i->name, vino_inputs[input].name);
3044
3045 if ((input == VINO_INPUT_COMPOSITE)
3046 || (input == VINO_INPUT_SVIDEO)) {
3047 struct saa7191_status status;
3048 i2c_decoder_command(DECODER_SAA7191_GET_STATUS, &status);
3049 i->status |= status.signal ? 0 : V4L2_IN_ST_NO_SIGNAL;
3050 i->status |= status.color ? 0 : V4L2_IN_ST_NO_COLOR;
3051 }
3052
3053 return 0;
3054 }
3055
3056 static int vino_v4l2_g_input(struct vino_channel_settings *vcs,
3057 unsigned int *i)
3058 {
3059 __u32 index;
3060 int input;
3061 unsigned long flags;
3062
3063 spin_lock_irqsave(&vino_drvdata->input_lock, flags);
3064 input = vcs->input;
3065 index = vino_find_input_index(vcs);
3066 spin_unlock_irqrestore(&vino_drvdata->input_lock, flags);
3067
3068 dprintk("input = %d\n", input);
3069
3070 if (input == VINO_INPUT_NONE) {
3071 return -EINVAL;
3072 }
3073
3074 *i = index;
3075
3076 return 0;
3077 }
3078
3079 static int vino_v4l2_s_input(struct vino_channel_settings *vcs,
3080 unsigned int *i)
3081 {
3082 int input;
3083 dprintk("requested input = %d\n", *i);
3084
3085 input = vino_enum_input(vcs, *i);
3086 if (input == VINO_INPUT_NONE)
3087 return -EINVAL;
3088
3089 return vino_set_input(vcs, input);
3090 }
3091
3092 static int vino_v4l2_enumstd(struct vino_channel_settings *vcs,
3093 struct v4l2_standard *s)
3094 {
3095 int index = s->index;
3096 int data_norm;
3097
3098 data_norm = vino_enum_data_norm(vcs, index);
3099 dprintk("standard index = %d\n", index);
3100
3101 if (data_norm == VINO_DATA_NORM_NONE)
3102 return -EINVAL;
3103
3104 dprintk("standard name = %s\n",
3105 vino_data_norms[data_norm].description);
3106
3107 memset(s, 0, sizeof(struct v4l2_standard));
3108 s->index = index;
3109
3110 s->id = vino_data_norms[data_norm].std;
3111 s->frameperiod.numerator = 1;
3112 s->frameperiod.denominator =
3113 vino_data_norms[data_norm].fps_max;
3114 s->framelines =
3115 vino_data_norms[data_norm].framelines;
3116 strcpy(s->name,
3117 vino_data_norms[data_norm].description);
3118
3119 return 0;
3120 }
3121
3122 static int vino_v4l2_querystd(struct vino_channel_settings *vcs,
3123 v4l2_std_id *std)
3124 {
3125 unsigned long flags;
3126 int err = 0;
3127
3128 spin_lock_irqsave(&vino_drvdata->input_lock, flags);
3129
3130 switch (vcs->input) {
3131 case VINO_INPUT_D1:
3132 *std = vino_inputs[vcs->input].std;
3133 break;
3134 case VINO_INPUT_COMPOSITE:
3135 case VINO_INPUT_SVIDEO: {
3136 struct saa7191_status status;
3137
3138 i2c_decoder_command(DECODER_SAA7191_GET_STATUS, &status);
3139
3140 if (status.signal) {
3141 if (status.signal_60hz) {
3142 *std = V4L2_STD_NTSC;
3143 } else {
3144 *std = V4L2_STD_PAL | V4L2_STD_SECAM;
3145 }
3146 } else {
3147 *std = vino_inputs[vcs->input].std;
3148 }
3149 break;
3150 }
3151 default:
3152 err = -EINVAL;
3153 }
3154
3155 spin_unlock_irqrestore(&vino_drvdata->input_lock, flags);
3156
3157 return err;
3158 }
3159
3160 static int vino_v4l2_g_std(struct vino_channel_settings *vcs,
3161 v4l2_std_id *std)
3162 {
3163 unsigned long flags;
3164
3165 spin_lock_irqsave(&vino_drvdata->input_lock, flags);
3166
3167 *std = vino_data_norms[vcs->data_norm].std;
3168 dprintk("current standard = %d\n", vcs->data_norm);
3169
3170 spin_unlock_irqrestore(&vino_drvdata->input_lock, flags);
3171
3172 return 0;
3173 }
3174
3175 static int vino_v4l2_s_std(struct vino_channel_settings *vcs,
3176 v4l2_std_id *std)
3177 {
3178 unsigned long flags;
3179 int ret = 0;
3180
3181 spin_lock_irqsave(&vino_drvdata->input_lock, flags);
3182
3183 if (!vino_is_input_owner(vcs)) {
3184 ret = -EBUSY;
3185 goto out;
3186 }
3187
3188 /* check if the standard is valid for the current input */
3189 if ((*std) & vino_inputs[vcs->input].std) {
3190 dprintk("standard accepted\n");
3191
3192 /* change the video norm for SAA7191
3193 * and accept NTSC for D1 (do nothing) */
3194
3195 if (vcs->input == VINO_INPUT_D1)
3196 goto out;
3197
3198 if (((*std) & V4L2_STD_PAL)
3199 && ((*std) & V4L2_STD_NTSC)
3200 && ((*std) & V4L2_STD_SECAM)) {
3201 ret = vino_set_data_norm(vcs, VINO_DATA_NORM_AUTO_EXT,
3202 &flags);
3203 } else if ((*std) & V4L2_STD_PAL) {
3204 ret = vino_set_data_norm(vcs, VINO_DATA_NORM_PAL,
3205 &flags);
3206 } else if ((*std) & V4L2_STD_NTSC) {
3207 ret = vino_set_data_norm(vcs, VINO_DATA_NORM_NTSC,
3208 &flags);
3209 } else if ((*std) & V4L2_STD_SECAM) {
3210 ret = vino_set_data_norm(vcs, VINO_DATA_NORM_SECAM,
3211 &flags);
3212 } else {
3213 ret = -EINVAL;
3214 }
3215
3216 if (ret) {
3217 ret = -EINVAL;
3218 }
3219 } else {
3220 ret = -EINVAL;
3221 }
3222
3223 out:
3224 spin_unlock_irqrestore(&vino_drvdata->input_lock, flags);
3225
3226 return ret;
3227 }
3228
3229 static int vino_v4l2_enum_fmt(struct vino_channel_settings *vcs,
3230 struct v4l2_fmtdesc *fd)
3231 {
3232 enum v4l2_buf_type type = fd->type;
3233 int index = fd->index;
3234 dprintk("format index = %d\n", index);
3235
3236 switch (fd->type) {
3237 case V4L2_BUF_TYPE_VIDEO_CAPTURE:
3238 if ((fd->index < 0) ||
3239 (fd->index >= VINO_DATA_FMT_COUNT))
3240 return -EINVAL;
3241 dprintk("format name = %s\n",
3242 vino_data_formats[index].description);
3243
3244 memset(fd, 0, sizeof(struct v4l2_fmtdesc));
3245 fd->index = index;
3246 fd->type = type;
3247 fd->pixelformat = vino_data_formats[index].pixelformat;
3248 strcpy(fd->description, vino_data_formats[index].description);
3249 break;
3250 case V4L2_BUF_TYPE_VIDEO_OVERLAY:
3251 default:
3252 return -EINVAL;
3253 }
3254
3255 return 0;
3256 }
3257
3258 static int vino_v4l2_try_fmt(struct vino_channel_settings *vcs,
3259 struct v4l2_format *f)
3260 {
3261 struct vino_channel_settings tempvcs;
3262 unsigned long flags;
3263
3264 switch (f->type) {
3265 case V4L2_BUF_TYPE_VIDEO_CAPTURE: {
3266 struct v4l2_pix_format *pf = &f->fmt.pix;
3267
3268 dprintk("requested: w = %d, h = %d\n",
3269 pf->width, pf->height);
3270
3271 spin_lock_irqsave(&vino_drvdata->input_lock, flags);
3272 memcpy(&tempvcs, vcs, sizeof(struct vino_channel_settings));
3273 spin_unlock_irqrestore(&vino_drvdata->input_lock, flags);
3274
3275 tempvcs.data_format = vino_find_data_format(pf->pixelformat);
3276 if (tempvcs.data_format == VINO_DATA_FMT_NONE) {
3277 tempvcs.data_format = VINO_DATA_FMT_GREY;
3278 pf->pixelformat =
3279 vino_data_formats[tempvcs.data_format].
3280 pixelformat;
3281 }
3282
3283 /* data format must be set before clipping/scaling */
3284 vino_set_scaling(&tempvcs, pf->width, pf->height);
3285
3286 dprintk("data format = %s\n",
3287 vino_data_formats[tempvcs.data_format].description);
3288
3289 pf->width = (tempvcs.clipping.right - tempvcs.clipping.left) /
3290 tempvcs.decimation;
3291 pf->height = (tempvcs.clipping.bottom - tempvcs.clipping.top) /
3292 tempvcs.decimation;
3293
3294 pf->field = V4L2_FIELD_INTERLACED;
3295 pf->bytesperline = tempvcs.line_size;
3296 pf->sizeimage = tempvcs.line_size *
3297 (tempvcs.clipping.bottom - tempvcs.clipping.top) /
3298 tempvcs.decimation;
3299 pf->colorspace =
3300 vino_data_formats[tempvcs.data_format].colorspace;
3301
3302 pf->priv = 0;
3303 break;
3304 }
3305 case V4L2_BUF_TYPE_VIDEO_OVERLAY:
3306 default:
3307 return -EINVAL;
3308 }
3309
3310 return 0;
3311 }
3312
3313 static int vino_v4l2_g_fmt(struct vino_channel_settings *vcs,
3314 struct v4l2_format *f)
3315 {
3316 unsigned long flags;
3317
3318 switch (f->type) {
3319 case V4L2_BUF_TYPE_VIDEO_CAPTURE: {
3320 struct v4l2_pix_format *pf = &f->fmt.pix;
3321
3322 spin_lock_irqsave(&vino_drvdata->input_lock, flags);
3323
3324 pf->width = (vcs->clipping.right - vcs->clipping.left) /
3325 vcs->decimation;
3326 pf->height = (vcs->clipping.bottom - vcs->clipping.top) /
3327 vcs->decimation;
3328 pf->pixelformat =
3329 vino_data_formats[vcs->data_format].pixelformat;
3330
3331 pf->field = V4L2_FIELD_INTERLACED;
3332 pf->bytesperline = vcs->line_size;
3333 pf->sizeimage = vcs->line_size *
3334 (vcs->clipping.bottom - vcs->clipping.top) /
3335 vcs->decimation;
3336 pf->colorspace =
3337 vino_data_formats[vcs->data_format].colorspace;
3338
3339 pf->priv = 0;
3340
3341 spin_unlock_irqrestore(&vino_drvdata->input_lock, flags);
3342 break;
3343 }
3344 case V4L2_BUF_TYPE_VIDEO_OVERLAY:
3345 default:
3346 return -EINVAL;
3347 }
3348
3349 return 0;
3350 }
3351
3352 static int vino_v4l2_s_fmt(struct vino_channel_settings *vcs,
3353 struct v4l2_format *f)
3354 {
3355 int data_format;
3356 unsigned long flags;
3357
3358 switch (f->type) {
3359 case V4L2_BUF_TYPE_VIDEO_CAPTURE: {
3360 struct v4l2_pix_format *pf = &f->fmt.pix;
3361
3362 spin_lock_irqsave(&vino_drvdata->input_lock, flags);
3363
3364 data_format = vino_find_data_format(pf->pixelformat);
3365
3366 if (data_format == VINO_DATA_FMT_NONE) {
3367 vcs->data_format = VINO_DATA_FMT_GREY;
3368 pf->pixelformat =
3369 vino_data_formats[vcs->data_format].
3370 pixelformat;
3371 } else {
3372 vcs->data_format = data_format;
3373 }
3374
3375 /* data format must be set before clipping/scaling */
3376 vino_set_scaling(vcs, pf->width, pf->height);
3377
3378 dprintk("data format = %s\n",
3379 vino_data_formats[vcs->data_format].description);
3380
3381 pf->width = vcs->clipping.right - vcs->clipping.left;
3382 pf->height = vcs->clipping.bottom - vcs->clipping.top;
3383
3384 pf->field = V4L2_FIELD_INTERLACED;
3385 pf->bytesperline = vcs->line_size;
3386 pf->sizeimage = vcs->line_size *
3387 (vcs->clipping.bottom - vcs->clipping.top) /
3388 vcs->decimation;
3389 pf->colorspace =
3390 vino_data_formats[vcs->data_format].colorspace;
3391
3392 pf->priv = 0;
3393
3394 spin_unlock_irqrestore(&vino_drvdata->input_lock, flags);
3395 break;
3396 }
3397 case V4L2_BUF_TYPE_VIDEO_OVERLAY:
3398 default:
3399 return -EINVAL;
3400 }
3401
3402 return 0;
3403 }
3404
3405 static int vino_v4l2_cropcap(struct vino_channel_settings *vcs,
3406 struct v4l2_cropcap *ccap)
3407 {
3408 const struct vino_data_norm *norm;
3409 unsigned long flags;
3410
3411 switch (ccap->type) {
3412 case V4L2_BUF_TYPE_VIDEO_CAPTURE:
3413 spin_lock_irqsave(&vino_drvdata->input_lock, flags);
3414
3415 norm = &vino_data_norms[vcs->data_norm];
3416
3417 spin_unlock_irqrestore(&vino_drvdata->input_lock, flags);
3418
3419 ccap->bounds.left = 0;
3420 ccap->bounds.top = 0;
3421 ccap->bounds.width = norm->width;
3422 ccap->bounds.height = norm->height;
3423 memcpy(&ccap->defrect, &ccap->bounds,
3424 sizeof(struct v4l2_rect));
3425
3426 ccap->pixelaspect.numerator = 1;
3427 ccap->pixelaspect.denominator = 1;
3428 break;
3429 case V4L2_BUF_TYPE_VIDEO_OVERLAY:
3430 default:
3431 return -EINVAL;
3432 }
3433
3434 return 0;
3435 }
3436
3437 static int vino_v4l2_g_crop(struct vino_channel_settings *vcs,
3438 struct v4l2_crop *c)
3439 {
3440 unsigned long flags;
3441
3442 switch (c->type) {
3443 case V4L2_BUF_TYPE_VIDEO_CAPTURE:
3444 spin_lock_irqsave(&vino_drvdata->input_lock, flags);
3445
3446 c->c.left = vcs->clipping.left;
3447 c->c.top = vcs->clipping.top;
3448 c->c.width = vcs->clipping.right - vcs->clipping.left;
3449 c->c.height = vcs->clipping.bottom - vcs->clipping.top;
3450
3451 spin_unlock_irqrestore(&vino_drvdata->input_lock, flags);
3452 break;
3453 case V4L2_BUF_TYPE_VIDEO_OVERLAY:
3454 default:
3455 return -EINVAL;
3456 }
3457
3458 return 0;
3459 }
3460
3461 static int vino_v4l2_s_crop(struct vino_channel_settings *vcs,
3462 struct v4l2_crop *c)
3463 {
3464 unsigned long flags;
3465
3466 switch (c->type) {
3467 case V4L2_BUF_TYPE_VIDEO_CAPTURE:
3468 spin_lock_irqsave(&vino_drvdata->input_lock, flags);
3469
3470 vino_set_clipping(vcs, c->c.left, c->c.top,
3471 c->c.width, c->c.height);
3472
3473 spin_unlock_irqrestore(&vino_drvdata->input_lock, flags);
3474 break;
3475 case V4L2_BUF_TYPE_VIDEO_OVERLAY:
3476 default:
3477 return -EINVAL;
3478 }
3479
3480 return 0;
3481 }
3482
3483 static int vino_v4l2_g_parm(struct vino_channel_settings *vcs,
3484 struct v4l2_streamparm *sp)
3485 {
3486 unsigned long flags;
3487
3488 switch (sp->type) {
3489 case V4L2_BUF_TYPE_VIDEO_CAPTURE: {
3490 struct v4l2_captureparm *cp = &sp->parm.capture;
3491 memset(cp, 0, sizeof(struct v4l2_captureparm));
3492
3493 cp->capability = V4L2_CAP_TIMEPERFRAME;
3494 cp->timeperframe.numerator = 1;
3495
3496 spin_lock_irqsave(&vino_drvdata->input_lock, flags);
3497
3498 cp->timeperframe.denominator = vcs->fps;
3499
3500 spin_unlock_irqrestore(&vino_drvdata->input_lock, flags);
3501
3502 // TODO: cp->readbuffers = xxx;
3503 break;
3504 }
3505 case V4L2_BUF_TYPE_VIDEO_OVERLAY:
3506 default:
3507 return -EINVAL;
3508 }
3509
3510 return 0;
3511 }
3512
3513 static int vino_v4l2_s_parm(struct vino_channel_settings *vcs,
3514 struct v4l2_streamparm *sp)
3515 {
3516 unsigned long flags;
3517
3518 switch (sp->type) {
3519 case V4L2_BUF_TYPE_VIDEO_CAPTURE: {
3520 struct v4l2_captureparm *cp = &sp->parm.capture;
3521
3522 spin_lock_irqsave(&vino_drvdata->input_lock, flags);
3523
3524 if ((cp->timeperframe.numerator == 0) ||
3525 (cp->timeperframe.denominator == 0)) {
3526 /* reset framerate */
3527 vino_set_default_framerate(vcs);
3528 } else {
3529 vino_set_framerate(vcs, cp->timeperframe.denominator /
3530 cp->timeperframe.numerator);
3531 }
3532
3533 spin_unlock_irqrestore(&vino_drvdata->input_lock, flags);
3534
3535 // TODO: set buffers according to cp->readbuffers
3536 break;
3537 }
3538 case V4L2_BUF_TYPE_VIDEO_OVERLAY:
3539 default:
3540 return -EINVAL;
3541 }
3542
3543 return 0;
3544 }
3545
3546 static int vino_v4l2_reqbufs(struct vino_channel_settings *vcs,
3547 struct v4l2_requestbuffers *rb)
3548 {
3549 if (vcs->reading)
3550 return -EBUSY;
3551
3552 switch (rb->type) {
3553 case V4L2_BUF_TYPE_VIDEO_CAPTURE: {
3554 // TODO: check queue type
3555 if (rb->memory != V4L2_MEMORY_MMAP) {
3556 dprintk("type not mmap\n");
3557 return -EINVAL;
3558 }
3559
3560 dprintk("count = %d\n", rb->count);
3561 if (rb->count > 0) {
3562 if (vino_is_capturing(vcs)) {
3563 dprintk("busy, capturing\n");
3564 return -EBUSY;
3565 }
3566
3567 if (vino_queue_has_mapped_buffers(&vcs->fb_queue)) {
3568 dprintk("busy, buffers still mapped\n");
3569 return -EBUSY;
3570 } else {
3571 vcs->streaming = 0;
3572 vino_queue_free(&vcs->fb_queue);
3573 vino_queue_init(&vcs->fb_queue, &rb->count);
3574 }
3575 } else {
3576 vcs->streaming = 0;
3577 vino_capture_stop(vcs);
3578 vino_queue_free(&vcs->fb_queue);
3579 }
3580 break;
3581 }
3582 case V4L2_BUF_TYPE_VIDEO_OVERLAY:
3583 default:
3584 return -EINVAL;
3585 }
3586
3587 return 0;
3588 }
3589
3590 static void vino_v4l2_get_buffer_status(struct vino_channel_settings *vcs,
3591 struct vino_framebuffer *fb,
3592 struct v4l2_buffer *b)
3593 {
3594 if (vino_queue_outgoing_contains(&vcs->fb_queue,
3595 fb->id)) {
3596 b->flags &= ~V4L2_BUF_FLAG_QUEUED;
3597 b->flags |= V4L2_BUF_FLAG_DONE;
3598 } else if (vino_queue_incoming_contains(&vcs->fb_queue,
3599 fb->id)) {
3600 b->flags &= ~V4L2_BUF_FLAG_DONE;
3601 b->flags |= V4L2_BUF_FLAG_QUEUED;
3602 } else {
3603 b->flags &= ~(V4L2_BUF_FLAG_DONE |
3604 V4L2_BUF_FLAG_QUEUED);
3605 }
3606
3607 b->flags &= ~(V4L2_BUF_FLAG_TIMECODE);
3608
3609 if (fb->map_count > 0)
3610 b->flags |= V4L2_BUF_FLAG_MAPPED;
3611
3612 b->index = fb->id;
3613 b->memory = (vcs->fb_queue.type == VINO_MEMORY_MMAP) ?
3614 V4L2_MEMORY_MMAP : V4L2_MEMORY_USERPTR;
3615 b->m.offset = fb->offset;
3616 b->bytesused = fb->data_size;
3617 b->length = fb->size;
3618 b->field = V4L2_FIELD_INTERLACED;
3619 b->sequence = fb->frame_counter;
3620 memcpy(&b->timestamp, &fb->timestamp,
3621 sizeof(struct timeval));
3622 // b->input ?
3623
3624 dprintk("buffer %d: length = %d, bytesused = %d, offset = %d\n",
3625 fb->id, fb->size, fb->data_size, fb->offset);
3626 }
3627
3628 static int vino_v4l2_querybuf(struct vino_channel_settings *vcs,
3629 struct v4l2_buffer *b)
3630 {
3631 if (vcs->reading)
3632 return -EBUSY;
3633
3634 switch (b->type) {
3635 case V4L2_BUF_TYPE_VIDEO_CAPTURE: {
3636 struct vino_framebuffer *fb;
3637
3638 // TODO: check queue type
3639 if (b->index >= vino_queue_get_length(&vcs->fb_queue)) {
3640 dprintk("invalid index = %d\n",
3641 b->index);
3642 return -EINVAL;
3643 }
3644
3645 fb = vino_queue_get_buffer(&vcs->fb_queue,
3646 b->index);
3647 if (fb == NULL) {
3648 dprintk("vino_queue_get_buffer() failed");
3649 return -EINVAL;
3650 }
3651
3652 vino_v4l2_get_buffer_status(vcs, fb, b);
3653 break;
3654 }
3655 case V4L2_BUF_TYPE_VIDEO_OVERLAY:
3656 default:
3657 return -EINVAL;
3658 }
3659
3660 return 0;
3661 }
3662
3663 static int vino_v4l2_qbuf(struct vino_channel_settings *vcs,
3664 struct v4l2_buffer *b)
3665 {
3666 if (vcs->reading)
3667 return -EBUSY;
3668
3669 switch (b->type) {
3670 case V4L2_BUF_TYPE_VIDEO_CAPTURE: {
3671 struct vino_framebuffer *fb;
3672 int ret;
3673
3674 // TODO: check queue type
3675 if (b->memory != V4L2_MEMORY_MMAP) {
3676 dprintk("type not mmap\n");
3677 return -EINVAL;
3678 }
3679
3680 fb = vino_capture_enqueue(vcs, b->index);
3681 if (fb == NULL)
3682 return -EINVAL;
3683
3684 vino_v4l2_get_buffer_status(vcs, fb, b);
3685
3686 if (vcs->streaming) {
3687 ret = vino_capture_next(vcs, 1);
3688 if (ret)
3689 return ret;
3690 }
3691 break;
3692 }
3693 case V4L2_BUF_TYPE_VIDEO_OVERLAY:
3694 default:
3695 return -EINVAL;
3696 }
3697
3698 return 0;
3699 }
3700
3701 static int vino_v4l2_dqbuf(struct vino_channel_settings *vcs,
3702 struct v4l2_buffer *b,
3703 unsigned int nonblocking)
3704 {
3705 if (vcs->reading)
3706 return -EBUSY;
3707
3708 switch (b->type) {
3709 case V4L2_BUF_TYPE_VIDEO_CAPTURE: {
3710 struct vino_framebuffer *fb;
3711 unsigned int incoming, outgoing;
3712 int err;
3713
3714 // TODO: check queue type
3715
3716 err = vino_queue_get_incoming(&vcs->fb_queue, &incoming);
3717 if (err) {
3718 dprintk("vino_queue_get_incoming() failed\n");
3719 return -EINVAL;
3720 }
3721 err = vino_queue_get_outgoing(&vcs->fb_queue, &outgoing);
3722 if (err) {
3723 dprintk("vino_queue_get_outgoing() failed\n");
3724 return -EINVAL;
3725 }
3726
3727 dprintk("incoming = %d, outgoing = %d\n", incoming, outgoing);
3728
3729 if (outgoing == 0) {
3730 if (incoming == 0) {
3731 dprintk("no incoming or outgoing buffers\n");
3732 return -EINVAL;
3733 }
3734 if (nonblocking) {
3735 dprintk("non-blocking I/O was selected and "
3736 "there are no buffers to dequeue\n");
3737 return -EAGAIN;
3738 }
3739
3740 err = vino_wait_for_frame(vcs);
3741 if (err) {
3742 err = vino_wait_for_frame(vcs);
3743 if (err) {
3744 /* interrupted or
3745 * no frames captured because
3746 * of frame skipping */
3747 // vino_capture_failed(vcs);
3748 return -EIO;
3749 }
3750 }
3751 }
3752
3753 fb = vino_queue_remove(&vcs->fb_queue, &b->index);
3754 if (fb == NULL) {
3755 dprintk("vino_queue_remove() failed\n");
3756 return -EINVAL;
3757 }
3758
3759 err = vino_check_buffer(vcs, fb);
3760
3761 vino_v4l2_get_buffer_status(vcs, fb, b);
3762
3763 if (err)
3764 return -EIO;
3765
3766 break;
3767 }
3768 case V4L2_BUF_TYPE_VIDEO_OVERLAY:
3769 default:
3770 return -EINVAL;
3771 }
3772
3773 return 0;
3774 }
3775
3776 static int vino_v4l2_streamon(struct vino_channel_settings *vcs)
3777 {
3778 unsigned int incoming;
3779 int ret;
3780 if (vcs->reading)
3781 return -EBUSY;
3782
3783 if (vcs->streaming)
3784 return 0;
3785
3786 // TODO: check queue type
3787
3788 if (vino_queue_get_length(&vcs->fb_queue) < 1) {
3789 dprintk("no buffers allocated\n");
3790 return -EINVAL;
3791 }
3792
3793 ret = vino_queue_get_incoming(&vcs->fb_queue, &incoming);
3794 if (ret) {
3795 dprintk("vino_queue_get_incoming() failed\n");
3796 return -EINVAL;
3797 }
3798
3799 vcs->streaming = 1;
3800
3801 if (incoming > 0) {
3802 ret = vino_capture_next(vcs, 1);
3803 if (ret) {
3804 vcs->streaming = 0;
3805
3806 dprintk("couldn't start capture\n");
3807 return -EINVAL;
3808 }
3809 }
3810
3811 return 0;
3812 }
3813
3814 static int vino_v4l2_streamoff(struct vino_channel_settings *vcs)
3815 {
3816 if (vcs->reading)
3817 return -EBUSY;
3818
3819 if (!vcs->streaming)
3820 return 0;
3821
3822 vcs->streaming = 0;
3823 vino_capture_stop(vcs);
3824
3825 return 0;
3826 }
3827
3828 static int vino_v4l2_queryctrl(struct vino_channel_settings *vcs,
3829 struct v4l2_queryctrl *queryctrl)
3830 {
3831 unsigned long flags;
3832 int i;
3833 int err = 0;
3834
3835 spin_lock_irqsave(&vino_drvdata->input_lock, flags);
3836
3837 switch (vcs->input) {
3838 case VINO_INPUT_D1:
3839 for (i = 0; i < VINO_INDYCAM_V4L2_CONTROL_COUNT; i++) {
3840 if (vino_indycam_v4l2_controls[i].id ==
3841 queryctrl->id) {
3842 memcpy(queryctrl,
3843 &vino_indycam_v4l2_controls[i],
3844 sizeof(struct v4l2_queryctrl));
3845 queryctrl->reserved[0] = 0;
3846 goto found;
3847 }
3848 }
3849
3850 err = -EINVAL;
3851 break;
3852 case VINO_INPUT_COMPOSITE:
3853 case VINO_INPUT_SVIDEO:
3854 for (i = 0; i < VINO_SAA7191_V4L2_CONTROL_COUNT; i++) {
3855 if (vino_saa7191_v4l2_controls[i].id ==
3856 queryctrl->id) {
3857 memcpy(queryctrl,
3858 &vino_saa7191_v4l2_controls[i],
3859 sizeof(struct v4l2_queryctrl));
3860 queryctrl->reserved[0] = 0;
3861 goto found;
3862 }
3863 }
3864
3865 err = -EINVAL;
3866 break;
3867 default:
3868 err = -EINVAL;
3869 }
3870
3871 found:
3872 spin_unlock_irqrestore(&vino_drvdata->input_lock, flags);
3873
3874 return err;
3875 }
3876
3877 static int vino_v4l2_g_ctrl(struct vino_channel_settings *vcs,
3878 struct v4l2_control *control)
3879 {
3880 unsigned long flags;
3881 int i;
3882 int err = 0;
3883
3884 spin_lock_irqsave(&vino_drvdata->input_lock, flags);
3885
3886 switch (vcs->input) {
3887 case VINO_INPUT_D1: {
3888 struct indycam_control indycam_ctrl;
3889
3890 for (i = 0; i < VINO_INDYCAM_V4L2_CONTROL_COUNT; i++) {
3891 if (vino_indycam_v4l2_controls[i].id ==
3892 control->id) {
3893 goto found1;
3894 }
3895 }
3896
3897 err = -EINVAL;
3898 goto out;
3899
3900 found1:
3901 indycam_ctrl.type = vino_indycam_v4l2_controls[i].reserved[0];
3902
3903 err = i2c_camera_command(DECODER_INDYCAM_GET_CONTROL,
3904 &indycam_ctrl);
3905 if (err) {
3906 err = -EINVAL;
3907 goto out;
3908 }
3909
3910 control->value = indycam_ctrl.value;
3911 break;
3912 }
3913 case VINO_INPUT_COMPOSITE:
3914 case VINO_INPUT_SVIDEO: {
3915 struct saa7191_control saa7191_ctrl;
3916
3917 for (i = 0; i < VINO_SAA7191_V4L2_CONTROL_COUNT; i++) {
3918 if (vino_saa7191_v4l2_controls[i].id ==
3919 control->id) {
3920 goto found2;
3921 }
3922 }
3923
3924 err = -EINVAL;
3925 goto out;
3926
3927 found2:
3928 saa7191_ctrl.type = vino_saa7191_v4l2_controls[i].reserved[0];
3929
3930 err = i2c_decoder_command(DECODER_SAA7191_GET_CONTROL,
3931 &saa7191_ctrl);
3932 if (err) {
3933 err = -EINVAL;
3934 goto out;
3935 }
3936
3937 control->value = saa7191_ctrl.value;
3938 break;
3939 }
3940 default:
3941 err = -EINVAL;
3942 }
3943
3944 out:
3945 spin_unlock_irqrestore(&vino_drvdata->input_lock, flags);
3946
3947 return err;
3948 }
3949
3950 static int vino_v4l2_s_ctrl(struct vino_channel_settings *vcs,
3951 struct v4l2_control *control)
3952 {
3953 unsigned long flags;
3954 int i;
3955 int err = 0;
3956
3957 spin_lock_irqsave(&vino_drvdata->input_lock, flags);
3958
3959 if (!vino_is_input_owner(vcs)) {
3960 err = -EBUSY;
3961 goto out;
3962 }
3963
3964 switch (vcs->input) {
3965 case VINO_INPUT_D1: {
3966 struct indycam_control indycam_ctrl;
3967
3968 for (i = 0; i < VINO_INDYCAM_V4L2_CONTROL_COUNT; i++) {
3969 if (vino_indycam_v4l2_controls[i].id ==
3970 control->id) {
3971 if ((control->value >=
3972 vino_indycam_v4l2_controls[i].minimum)
3973 && (control->value <=
3974 vino_indycam_v4l2_controls[i].
3975 maximum)) {
3976 goto found1;
3977 } else {
3978 err = -ERANGE;
3979 goto out;
3980 }
3981 }
3982 }
3983
3984 err = -EINVAL;
3985 goto out;
3986
3987 found1:
3988 indycam_ctrl.type = vino_indycam_v4l2_controls[i].reserved[0];
3989 indycam_ctrl.value = control->value;
3990
3991 err = i2c_camera_command(DECODER_INDYCAM_SET_CONTROL,
3992 &indycam_ctrl);
3993 if (err)
3994 err = -EINVAL;
3995 break;
3996 }
3997 case VINO_INPUT_COMPOSITE:
3998 case VINO_INPUT_SVIDEO: {
3999 struct saa7191_control saa7191_ctrl;
4000
4001 for (i = 0; i < VINO_SAA7191_V4L2_CONTROL_COUNT; i++) {
4002 if (vino_saa7191_v4l2_controls[i].id ==
4003 control->id) {
4004 if ((control->value >=
4005 vino_saa7191_v4l2_controls[i].minimum)
4006 && (control->value <=
4007 vino_saa7191_v4l2_controls[i].
4008 maximum)) {
4009 goto found2;
4010 } else {
4011 err = -ERANGE;
4012 goto out;
4013 }
4014 }
4015 }
4016 err = -EINVAL;
4017 goto out;
4018
4019 found2:
4020 saa7191_ctrl.type = vino_saa7191_v4l2_controls[i].reserved[0];
4021 saa7191_ctrl.value = control->value;
4022
4023 err = i2c_decoder_command(DECODER_SAA7191_SET_CONTROL,
4024 &saa7191_ctrl);
4025 if (err)
4026 err = -EINVAL;
4027 break;
4028 }
4029 default:
4030 err = -EINVAL;
4031 }
4032
4033 out:
4034 spin_unlock_irqrestore(&vino_drvdata->input_lock, flags);
4035
4036 return err;
4037 }
4038
4039 /* File operations */
4040
4041 static int vino_open(struct inode *inode, struct file *file)
4042 {
4043 struct video_device *dev = video_devdata(file);
4044 struct vino_channel_settings *vcs = video_get_drvdata(dev);
4045 int ret = 0;
4046 dprintk("open(): channel = %c\n",
4047 (vcs->channel == VINO_CHANNEL_A) ? 'A' : 'B');
4048
4049 mutex_lock(&vcs->mutex);
4050
4051 if (vcs->users) {
4052 dprintk("open(): driver busy\n");
4053 ret = -EBUSY;
4054 goto out;
4055 }
4056
4057 ret = vino_acquire_input(vcs);
4058 if (ret) {
4059 dprintk("open(): vino_acquire_input() failed\n");
4060 goto out;
4061 }
4062
4063 vcs->users++;
4064
4065 out:
4066 mutex_unlock(&vcs->mutex);
4067
4068 dprintk("open(): %s!\n", ret ? "failed" : "complete");
4069
4070 return ret;
4071 }
4072
4073 static int vino_close(struct inode *inode, struct file *file)
4074 {
4075 struct video_device *dev = video_devdata(file);
4076 struct vino_channel_settings *vcs = video_get_drvdata(dev);
4077 dprintk("close():\n");
4078
4079 mutex_lock(&vcs->mutex);
4080
4081 vcs->users--;
4082
4083 if (!vcs->users) {
4084 vino_release_input(vcs);
4085
4086 /* stop DMA and free buffers */
4087 vino_capture_stop(vcs);
4088 vino_queue_free(&vcs->fb_queue);
4089 }
4090
4091 mutex_unlock(&vcs->mutex);
4092
4093 return 0;
4094 }
4095
4096 static void vino_vm_open(struct vm_area_struct *vma)
4097 {
4098 struct vino_framebuffer *fb = vma->vm_private_data;
4099
4100 fb->map_count++;
4101 dprintk("vino_vm_open(): count = %d\n", fb->map_count);
4102 }
4103
4104 static void vino_vm_close(struct vm_area_struct *vma)
4105 {
4106 struct vino_framebuffer *fb = vma->vm_private_data;
4107
4108 fb->map_count--;
4109 dprintk("vino_vm_close(): count = %d\n", fb->map_count);
4110 }
4111
4112 static struct vm_operations_struct vino_vm_ops = {
4113 .open = vino_vm_open,
4114 .close = vino_vm_close,
4115 };
4116
4117 static int vino_mmap(struct file *file, struct vm_area_struct *vma)
4118 {
4119 struct video_device *dev = video_devdata(file);
4120 struct vino_channel_settings *vcs = video_get_drvdata(dev);
4121
4122 unsigned long start = vma->vm_start;
4123 unsigned long size = vma->vm_end - vma->vm_start;
4124 unsigned long offset = vma->vm_pgoff << PAGE_SHIFT;
4125
4126 struct vino_framebuffer *fb = NULL;
4127 unsigned int i, length;
4128 int ret = 0;
4129
4130 dprintk("mmap():\n");
4131
4132 // TODO: reject mmap if already mapped
4133
4134 if (mutex_lock_interruptible(&vcs->mutex))
4135 return -EINTR;
4136
4137 if (vcs->reading) {
4138 ret = -EBUSY;
4139 goto out;
4140 }
4141
4142 // TODO: check queue type
4143
4144 if (!(vma->vm_flags & VM_WRITE)) {
4145 dprintk("mmap(): app bug: PROT_WRITE please\n");
4146 ret = -EINVAL;
4147 goto out;
4148 }
4149 if (!(vma->vm_flags & VM_SHARED)) {
4150 dprintk("mmap(): app bug: MAP_SHARED please\n");
4151 ret = -EINVAL;
4152 goto out;
4153 }
4154
4155 /* find the correct buffer using offset */
4156 length = vino_queue_get_length(&vcs->fb_queue);
4157 if (length == 0) {
4158 dprintk("mmap(): queue not initialized\n");
4159 ret = -EINVAL;
4160 goto out;
4161 }
4162
4163 for (i = 0; i < length; i++) {
4164 fb = vino_queue_get_buffer(&vcs->fb_queue, i);
4165 if (fb == NULL) {
4166 dprintk("mmap(): vino_queue_get_buffer() failed\n");
4167 ret = -EINVAL;
4168 goto out;
4169 }
4170
4171 if (fb->offset == offset)
4172 goto found;
4173 }
4174
4175 dprintk("mmap(): invalid offset = %lu\n", offset);
4176 ret = -EINVAL;
4177 goto out;
4178
4179 found:
4180 dprintk("mmap(): buffer = %d\n", i);
4181
4182 if (size > (fb->desc_table.page_count * PAGE_SIZE)) {
4183 dprintk("mmap(): failed: size = %lu > %lu\n",
4184 size, fb->desc_table.page_count * PAGE_SIZE);
4185 ret = -EINVAL;
4186 goto out;
4187 }
4188
4189 for (i = 0; i < fb->desc_table.page_count; i++) {
4190 unsigned long pfn =
4191 virt_to_phys((void *)fb->desc_table.virtual[i]) >>
4192 PAGE_SHIFT;
4193
4194 if (size < PAGE_SIZE)
4195 break;
4196
4197 // protection was: PAGE_READONLY
4198 if (remap_pfn_range(vma, start, pfn, PAGE_SIZE,
4199 vma->vm_page_prot)) {
4200 dprintk("mmap(): remap_pfn_range() failed\n");
4201 ret = -EAGAIN;
4202 goto out;
4203 }
4204
4205 start += PAGE_SIZE;
4206 size -= PAGE_SIZE;
4207 }
4208
4209 fb->map_count = 1;
4210
4211 vma->vm_flags |= VM_DONTEXPAND | VM_RESERVED;
4212 vma->vm_flags &= ~VM_IO;
4213 vma->vm_private_data = fb;
4214 vma->vm_file = file;
4215 vma->vm_ops = &vino_vm_ops;
4216
4217 out:
4218 mutex_unlock(&vcs->mutex);
4219
4220 return ret;
4221 }
4222
4223 static unsigned int vino_poll(struct file *file, poll_table *pt)
4224 {
4225 struct video_device *dev = video_devdata(file);
4226 struct vino_channel_settings *vcs = video_get_drvdata(dev);
4227 unsigned int outgoing;
4228 unsigned int ret = 0;
4229
4230 // lock mutex (?)
4231 // TODO: this has to be corrected for different read modes
4232
4233 dprintk("poll():\n");
4234
4235 if (vino_queue_get_outgoing(&vcs->fb_queue, &outgoing)) {
4236 dprintk("poll(): vino_queue_get_outgoing() failed\n");
4237 ret = POLLERR;
4238 goto error;
4239 }
4240 if (outgoing > 0)
4241 goto over;
4242
4243 poll_wait(file, &vcs->fb_queue.frame_wait_queue, pt);
4244
4245 if (vino_queue_get_outgoing(&vcs->fb_queue, &outgoing)) {
4246 dprintk("poll(): vino_queue_get_outgoing() failed\n");
4247 ret = POLLERR;
4248 goto error;
4249 }
4250
4251 over:
4252 dprintk("poll(): data %savailable\n",
4253 (outgoing > 0) ? "" : "not ");
4254
4255 if (outgoing > 0)
4256 ret = POLLIN | POLLRDNORM;
4257
4258 error:
4259
4260 return ret;
4261 }
4262
4263 static int vino_do_ioctl(struct inode *inode, struct file *file,
4264 unsigned int cmd, void *arg)
4265 {
4266 struct video_device *dev = video_devdata(file);
4267 struct vino_channel_settings *vcs = video_get_drvdata(dev);
4268
4269 #ifdef VINO_DEBUG
4270 switch (_IOC_TYPE(cmd)) {
4271 case 'v':
4272 dprintk("ioctl(): V4L1 unsupported (0x%08x)\n", cmd);
4273 break;
4274 case 'V':
4275 dprintk("ioctl(): V4L2 %s (0x%08x)\n",
4276 v4l2_ioctl_names[_IOC_NR(cmd)], cmd);
4277 break;
4278 default:
4279 dprintk("ioctl(): unsupported command 0x%08x\n", cmd);
4280 }
4281 #endif
4282
4283 switch (cmd) {
4284 /* V4L2 interface */
4285 case VIDIOC_QUERYCAP: {
4286 vino_v4l2_querycap(arg);
4287 break;
4288 }
4289 case VIDIOC_ENUMINPUT: {
4290 return vino_v4l2_enuminput(vcs, arg);
4291 }
4292 case VIDIOC_G_INPUT: {
4293 return vino_v4l2_g_input(vcs, arg);
4294 }
4295 case VIDIOC_S_INPUT: {
4296 return vino_v4l2_s_input(vcs, arg);
4297 }
4298 case VIDIOC_ENUMSTD: {
4299 return vino_v4l2_enumstd(vcs, arg);
4300 }
4301 case VIDIOC_QUERYSTD: {
4302 return vino_v4l2_querystd(vcs, arg);
4303 }
4304 case VIDIOC_G_STD: {
4305 return vino_v4l2_g_std(vcs, arg);
4306 }
4307 case VIDIOC_S_STD: {
4308 return vino_v4l2_s_std(vcs, arg);
4309 }
4310 case VIDIOC_ENUM_FMT: {
4311 return vino_v4l2_enum_fmt(vcs, arg);
4312 }
4313 case VIDIOC_TRY_FMT: {
4314 return vino_v4l2_try_fmt(vcs, arg);
4315 }
4316 case VIDIOC_G_FMT: {
4317 return vino_v4l2_g_fmt(vcs, arg);
4318 }
4319 case VIDIOC_S_FMT: {
4320 return vino_v4l2_s_fmt(vcs, arg);
4321 }
4322 case VIDIOC_CROPCAP: {
4323 return vino_v4l2_cropcap(vcs, arg);
4324 }
4325 case VIDIOC_G_CROP: {
4326 return vino_v4l2_g_crop(vcs, arg);
4327 }
4328 case VIDIOC_S_CROP: {
4329 return vino_v4l2_s_crop(vcs, arg);
4330 }
4331 case VIDIOC_G_PARM: {
4332 return vino_v4l2_g_parm(vcs, arg);
4333 }
4334 case VIDIOC_S_PARM: {
4335 return vino_v4l2_s_parm(vcs, arg);
4336 }
4337 case VIDIOC_REQBUFS: {
4338 return vino_v4l2_reqbufs(vcs, arg);
4339 }
4340 case VIDIOC_QUERYBUF: {
4341 return vino_v4l2_querybuf(vcs, arg);
4342 }
4343 case VIDIOC_QBUF: {
4344 return vino_v4l2_qbuf(vcs, arg);
4345 }
4346 case VIDIOC_DQBUF: {
4347 return vino_v4l2_dqbuf(vcs, arg, file->f_flags & O_NONBLOCK);
4348 }
4349 case VIDIOC_STREAMON: {
4350 return vino_v4l2_streamon(vcs);
4351 }
4352 case VIDIOC_STREAMOFF: {
4353 return vino_v4l2_streamoff(vcs);
4354 }
4355 case VIDIOC_QUERYCTRL: {
4356 return vino_v4l2_queryctrl(vcs, arg);
4357 }
4358 case VIDIOC_G_CTRL: {
4359 return vino_v4l2_g_ctrl(vcs, arg);
4360 }
4361 case VIDIOC_S_CTRL: {
4362 return vino_v4l2_s_ctrl(vcs, arg);
4363 }
4364 default:
4365 return -ENOIOCTLCMD;
4366 }
4367
4368 return 0;
4369 }
4370
4371 static int vino_ioctl(struct inode *inode, struct file *file,
4372 unsigned int cmd, unsigned long arg)
4373 {
4374 struct video_device *dev = video_devdata(file);
4375 struct vino_channel_settings *vcs = video_get_drvdata(dev);
4376 int ret;
4377
4378 if (mutex_lock_interruptible(&vcs->mutex))
4379 return -EINTR;
4380
4381 ret = video_usercopy(inode, file, cmd, arg, vino_do_ioctl);
4382
4383 mutex_unlock(&vcs->mutex);
4384
4385 return ret;
4386 }
4387
4388 /* Initialization and cleanup */
4389
4390 // __initdata
4391 static int vino_init_stage = 0;
4392
4393 static struct file_operations vino_fops = {
4394 .owner = THIS_MODULE,
4395 .open = vino_open,
4396 .release = vino_close,
4397 .ioctl = vino_ioctl,
4398 .mmap = vino_mmap,
4399 .poll = vino_poll,
4400 .llseek = no_llseek,
4401 };
4402
4403 static struct video_device v4l_device_template = {
4404 .name = "NOT SET",
4405 //.type = VID_TYPE_CAPTURE | VID_TYPE_SUBCAPTURE |
4406 // VID_TYPE_CLIPPING | VID_TYPE_SCALES, VID_TYPE_OVERLAY
4407 .fops = &vino_fops,
4408 .minor = -1,
4409 };
4410
4411 static void vino_module_cleanup(int stage)
4412 {
4413 switch(stage) {
4414 case 10:
4415 video_unregister_device(vino_drvdata->b.v4l_device);
4416 vino_drvdata->b.v4l_device = NULL;
4417 case 9:
4418 video_unregister_device(vino_drvdata->a.v4l_device);
4419 vino_drvdata->a.v4l_device = NULL;
4420 case 8:
4421 vino_i2c_del_bus();
4422 case 7:
4423 free_irq(SGI_VINO_IRQ, NULL);
4424 case 6:
4425 if (vino_drvdata->b.v4l_device) {
4426 video_device_release(vino_drvdata->b.v4l_device);
4427 vino_drvdata->b.v4l_device = NULL;
4428 }
4429 case 5:
4430 if (vino_drvdata->a.v4l_device) {
4431 video_device_release(vino_drvdata->a.v4l_device);
4432 vino_drvdata->a.v4l_device = NULL;
4433 }
4434 case 4:
4435 /* all entries in dma_cpu dummy table have the same address */
4436 dma_unmap_single(NULL,
4437 vino_drvdata->dummy_desc_table.dma_cpu[0],
4438 PAGE_SIZE, DMA_FROM_DEVICE);
4439 dma_free_coherent(NULL, VINO_DUMMY_DESC_COUNT
4440 * sizeof(dma_addr_t),
4441 (void *)vino_drvdata->
4442 dummy_desc_table.dma_cpu,
4443 vino_drvdata->dummy_desc_table.dma);
4444 case 3:
4445 free_page(vino_drvdata->dummy_page);
4446 case 2:
4447 kfree(vino_drvdata);
4448 case 1:
4449 iounmap(vino);
4450 case 0:
4451 break;
4452 default:
4453 dprintk("vino_module_cleanup(): invalid cleanup stage = %d\n",
4454 stage);
4455 }
4456 }
4457
4458 static int vino_probe(void)
4459 {
4460 unsigned long rev_id;
4461
4462 if (ip22_is_fullhouse()) {
4463 printk(KERN_ERR "VINO doesn't exist in IP22 Fullhouse\n");
4464 return -ENODEV;
4465 }
4466
4467 if (!(sgimc->systemid & SGIMC_SYSID_EPRESENT)) {
4468 printk(KERN_ERR "VINO is not found (EISA BUS not present)\n");
4469 return -ENODEV;
4470 }
4471
4472 vino = (struct sgi_vino *)ioremap(VINO_BASE, sizeof(struct sgi_vino));
4473 if (!vino) {
4474 printk(KERN_ERR "VINO: ioremap() failed\n");
4475 return -EIO;
4476 }
4477 vino_init_stage++;
4478
4479 if (get_dbe(rev_id, &(vino->rev_id))) {
4480 printk(KERN_ERR "Failed to read VINO revision register\n");
4481 vino_module_cleanup(vino_init_stage);
4482 return -ENODEV;
4483 }
4484
4485 if (VINO_ID_VALUE(rev_id) != VINO_CHIP_ID) {
4486 printk(KERN_ERR "Unknown VINO chip ID (Rev/ID: 0x%02lx)\n",
4487 rev_id);
4488 vino_module_cleanup(vino_init_stage);
4489 return -ENODEV;
4490 }
4491
4492 printk(KERN_INFO "VINO revision %ld found\n", VINO_REV_NUM(rev_id));
4493
4494 return 0;
4495 }
4496
4497 static int vino_init(void)
4498 {
4499 dma_addr_t dma_dummy_address;
4500 int i;
4501
4502 vino_drvdata = kzalloc(sizeof(struct vino_settings), GFP_KERNEL);
4503 if (!vino_drvdata) {
4504 vino_module_cleanup(vino_init_stage);
4505 return -ENOMEM;
4506 }
4507 vino_init_stage++;
4508
4509 /* create a dummy dma descriptor */
4510 vino_drvdata->dummy_page = get_zeroed_page(GFP_KERNEL | GFP_DMA);
4511 if (!vino_drvdata->dummy_page) {
4512 vino_module_cleanup(vino_init_stage);
4513 return -ENOMEM;
4514 }
4515 vino_init_stage++;
4516
4517 // TODO: use page_count in dummy_desc_table
4518
4519 vino_drvdata->dummy_desc_table.dma_cpu =
4520 dma_alloc_coherent(NULL,
4521 VINO_DUMMY_DESC_COUNT * sizeof(dma_addr_t),
4522 &vino_drvdata->dummy_desc_table.dma,
4523 GFP_KERNEL | GFP_DMA);
4524 if (!vino_drvdata->dummy_desc_table.dma_cpu) {
4525 vino_module_cleanup(vino_init_stage);
4526 return -ENOMEM;
4527 }
4528 vino_init_stage++;
4529
4530 dma_dummy_address = dma_map_single(NULL,
4531 (void *)vino_drvdata->dummy_page,
4532 PAGE_SIZE, DMA_FROM_DEVICE);
4533 for (i = 0; i < VINO_DUMMY_DESC_COUNT; i++) {
4534 vino_drvdata->dummy_desc_table.dma_cpu[i] = dma_dummy_address;
4535 }
4536
4537 /* initialize VINO */
4538
4539 vino->control = 0;
4540 vino->a.next_4_desc = vino_drvdata->dummy_desc_table.dma;
4541 vino->b.next_4_desc = vino_drvdata->dummy_desc_table.dma;
4542 udelay(VINO_DESC_FETCH_DELAY);
4543
4544 vino->intr_status = 0;
4545
4546 vino->a.fifo_thres = VINO_FIFO_THRESHOLD_DEFAULT;
4547 vino->b.fifo_thres = VINO_FIFO_THRESHOLD_DEFAULT;
4548
4549 return 0;
4550 }
4551
4552 static int vino_init_channel_settings(struct vino_channel_settings *vcs,
4553 unsigned int channel, const char *name)
4554 {
4555 vcs->channel = channel;
4556 vcs->input = VINO_INPUT_NONE;
4557 vcs->alpha = 0;
4558 vcs->users = 0;
4559 vcs->data_format = VINO_DATA_FMT_GREY;
4560 vcs->data_norm = VINO_DATA_NORM_NTSC;
4561 vcs->decimation = 1;
4562 vino_set_default_clipping(vcs);
4563 vino_set_default_framerate(vcs);
4564
4565 vcs->capturing = 0;
4566
4567 mutex_init(&vcs->mutex);
4568 spin_lock_init(&vcs->capture_lock);
4569
4570 mutex_init(&vcs->fb_queue.queue_mutex);
4571 spin_lock_init(&vcs->fb_queue.queue_lock);
4572 init_waitqueue_head(&vcs->fb_queue.frame_wait_queue);
4573
4574 vcs->v4l_device = video_device_alloc();
4575 if (!vcs->v4l_device) {
4576 vino_module_cleanup(vino_init_stage);
4577 return -ENOMEM;
4578 }
4579 vino_init_stage++;
4580
4581 memcpy(vcs->v4l_device, &v4l_device_template,
4582 sizeof(struct video_device));
4583 strcpy(vcs->v4l_device->name, name);
4584 vcs->v4l_device->release = video_device_release;
4585
4586 video_set_drvdata(vcs->v4l_device, vcs);
4587
4588 return 0;
4589 }
4590
4591 static int __init vino_module_init(void)
4592 {
4593 int ret;
4594
4595 printk(KERN_INFO "SGI VINO driver version %s\n",
4596 VINO_MODULE_VERSION);
4597
4598 ret = vino_probe();
4599 if (ret)
4600 return ret;
4601
4602 ret = vino_init();
4603 if (ret)
4604 return ret;
4605
4606 /* initialize data structures */
4607
4608 spin_lock_init(&vino_drvdata->vino_lock);
4609 spin_lock_init(&vino_drvdata->input_lock);
4610
4611 ret = vino_init_channel_settings(&vino_drvdata->a, VINO_CHANNEL_A,
4612 vino_v4l_device_name_a);
4613 if (ret)
4614 return ret;
4615
4616 ret = vino_init_channel_settings(&vino_drvdata->b, VINO_CHANNEL_B,
4617 vino_v4l_device_name_b);
4618 if (ret)
4619 return ret;
4620
4621 /* initialize hardware and register V4L devices */
4622
4623 ret = request_irq(SGI_VINO_IRQ, vino_interrupt, 0,
4624 vino_driver_description, NULL);
4625 if (ret) {
4626 printk(KERN_ERR "VINO: requesting IRQ %02d failed\n",
4627 SGI_VINO_IRQ);
4628 vino_module_cleanup(vino_init_stage);
4629 return -EAGAIN;
4630 }
4631 vino_init_stage++;
4632
4633 ret = vino_i2c_add_bus();
4634 if (ret) {
4635 printk(KERN_ERR "VINO I2C bus registration failed\n");
4636 vino_module_cleanup(vino_init_stage);
4637 return ret;
4638 }
4639 vino_init_stage++;
4640
4641 ret = video_register_device(vino_drvdata->a.v4l_device,
4642 VFL_TYPE_GRABBER, -1);
4643 if (ret < 0) {
4644 printk(KERN_ERR "VINO channel A Video4Linux-device "
4645 "registration failed\n");
4646 vino_module_cleanup(vino_init_stage);
4647 return -EINVAL;
4648 }
4649 vino_init_stage++;
4650
4651 ret = video_register_device(vino_drvdata->b.v4l_device,
4652 VFL_TYPE_GRABBER, -1);
4653 if (ret < 0) {
4654 printk(KERN_ERR "VINO channel B Video4Linux-device "
4655 "registration failed\n");
4656 vino_module_cleanup(vino_init_stage);
4657 return -EINVAL;
4658 }
4659 vino_init_stage++;
4660
4661 #if defined(CONFIG_KMOD) && defined(MODULE)
4662 request_module("saa7191");
4663 request_module("indycam");
4664 #endif
4665
4666 dprintk("init complete!\n");
4667
4668 return 0;
4669 }
4670
4671 static void __exit vino_module_exit(void)
4672 {
4673 dprintk("exiting, stage = %d ...\n", vino_init_stage);
4674 vino_module_cleanup(vino_init_stage);
4675 dprintk("cleanup complete, exit!\n");
4676 }
4677
4678 module_init(vino_module_init);
4679 module_exit(vino_module_exit);
linux kernel for loongson