1 /*
2 * Driver for the VINO (Video In No Out) system found in SGI Indys.
3 *
4 * This file is subject to the terms and conditions of the GNU General Public
5 * License version 2 as published by the Free Software Foundation.
6 *
7 * Copyright (C) 2004,2005 Mikael Nousiainen <tmnousia@cc.hut.fi>
8 *
9 * Based on the previous version of the driver for 2.4 kernels by:
10 * Copyright (C) 2003 Ladislav Michl <ladis@linux-mips.org>
11 *
12 * v4l2_device/v4l2_subdev conversion by:
13 * Copyright (C) 2009 Hans Verkuil <hverkuil@xs4all.nl>
14 *
15 * Note: this conversion is untested! Please contact the linux-media
16 * mailinglist if you can test this, together with the test results.
17 */
18
19 /*
20 * TODO:
21 * - remove "mark pages reserved-hacks" from memory allocation code
22 * and implement fault()
23 * - check decimation, calculating and reporting image size when
24 * using decimation
25 * - implement read(), user mode buffers and overlay (?)
26 */
27
28 #include <linux/init.h>
29 #include <linux/module.h>
30 #include <linux/delay.h>
31 #include <linux/dma-mapping.h>
32 #include <linux/errno.h>
33 #include <linux/fs.h>
34 #include <linux/interrupt.h>
35 #include <linux/kernel.h>
36 #include <linux/slab.h>
37 #include <linux/mm.h>
38 #include <linux/time.h>
39 #include <linux/kmod.h>
40
41 #include <linux/i2c.h>
42
43 #include <linux/videodev2.h>
44 #include <media/v4l2-device.h>
45 #include <media/v4l2-ioctl.h>
46 #include <linux/mutex.h>
47
48 #include <asm/paccess.h>
49 #include <asm/io.h>
50 #include <asm/sgi/ip22.h>
51 #include <asm/sgi/mc.h>
52
53 #include "vino.h"
54 #include "saa7191.h"
55 #include "indycam.h"
56
57 /* Uncomment the following line to get lots and lots of (mostly useless)
58 * debug info.
59 * Note that the debug output also slows down the driver significantly */
60 // #define VINO_DEBUG
61 // #define VINO_DEBUG_INT
62
63 #define VINO_MODULE_VERSION "0.0.7"
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
146 #define VINO_DATA_NORM_COUNT 4
147
148 /* I2C controller flags */
149 #define SGI_I2C_FORCE_IDLE (0 << 0)
150 #define SGI_I2C_NOT_IDLE (1 << 0)
151 #define SGI_I2C_WRITE (0 << 1)
152 #define SGI_I2C_READ (1 << 1)
153 #define SGI_I2C_RELEASE_BUS (0 << 2)
154 #define SGI_I2C_HOLD_BUS (1 << 2)
155 #define SGI_I2C_XFER_DONE (0 << 4)
156 #define SGI_I2C_XFER_BUSY (1 << 4)
157 #define SGI_I2C_ACK (0 << 5)
158 #define SGI_I2C_NACK (1 << 5)
159 #define SGI_I2C_BUS_OK (0 << 7)
160 #define SGI_I2C_BUS_ERR (1 << 7)
161
162 /* Internal data structure definitions */
163
164 struct vino_input {
165 char *name;
166 v4l2_std_id std;
167 };
168
169 struct vino_clipping {
170 unsigned int left, right, top, bottom;
171 };
172
173 struct vino_data_format {
174 /* the description */
175 char *description;
176 /* bytes per pixel */
177 unsigned int bpp;
178 /* V4L2 fourcc code */
179 __u32 pixelformat;
180 /* V4L2 colorspace (duh!) */
181 enum v4l2_colorspace colorspace;
182 };
183
184 struct vino_data_norm {
185 char *description;
186 unsigned int width, height;
187 struct vino_clipping odd;
188 struct vino_clipping even;
189
190 v4l2_std_id std;
191 unsigned int fps_min, fps_max;
192 __u32 framelines;
193 };
194
195 struct vino_descriptor_table {
196 /* the number of PAGE_SIZE sized pages in the buffer */
197 unsigned int page_count;
198 /* virtual (kmalloc'd) pointers to the actual data
199 * (in PAGE_SIZE chunks, used with mmap streaming) */
200 unsigned long *virtual;
201
202 /* cpu address for the VINO descriptor table
203 * (contains DMA addresses, VINO_PAGE_SIZE chunks) */
204 unsigned long *dma_cpu;
205 /* dma address for the VINO descriptor table
206 * (contains DMA addresses, VINO_PAGE_SIZE chunks) */
207 dma_addr_t dma;
208 };
209
210 struct vino_framebuffer {
211 /* identifier nubmer */
212 unsigned int id;
213 /* the length of the whole buffer */
214 unsigned int size;
215 /* the length of actual data in buffer */
216 unsigned int data_size;
217 /* the data format */
218 unsigned int data_format;
219 /* the state of buffer data */
220 unsigned int state;
221 /* is the buffer mapped in user space? */
222 unsigned int map_count;
223 /* memory offset for mmap() */
224 unsigned int offset;
225 /* frame counter */
226 unsigned int frame_counter;
227 /* timestamp (written when image capture finishes) */
228 struct timeval timestamp;
229
230 struct vino_descriptor_table desc_table;
231
232 spinlock_t state_lock;
233 };
234
235 struct vino_framebuffer_fifo {
236 unsigned int length;
237
238 unsigned int used;
239 unsigned int head;
240 unsigned int tail;
241
242 unsigned int data[VINO_FRAMEBUFFER_COUNT_MAX];
243 };
244
245 struct vino_framebuffer_queue {
246 unsigned int magic;
247
248 /* VINO_MEMORY_NONE, VINO_MEMORY_MMAP or VINO_MEMORY_USERPTR */
249 unsigned int type;
250 unsigned int length;
251
252 /* data field of in and out contain index numbers for buffer */
253 struct vino_framebuffer_fifo in;
254 struct vino_framebuffer_fifo out;
255
256 struct vino_framebuffer *buffer[VINO_FRAMEBUFFER_COUNT_MAX];
257
258 spinlock_t queue_lock;
259 struct mutex queue_mutex;
260 wait_queue_head_t frame_wait_queue;
261 };
262
263 struct vino_interrupt_data {
264 struct timeval timestamp;
265 unsigned int frame_counter;
266 unsigned int skip_count;
267 unsigned int skip;
268 };
269
270 struct vino_channel_settings {
271 unsigned int channel;
272
273 int input;
274 unsigned int data_format;
275 unsigned int data_norm;
276 struct vino_clipping clipping;
277 unsigned int decimation;
278 unsigned int line_size;
279 unsigned int alpha;
280 unsigned int fps;
281 unsigned int framert_reg;
282
283 unsigned int fifo_threshold;
284
285 struct vino_framebuffer_queue fb_queue;
286
287 /* number of the current field */
288 unsigned int field;
289
290 /* read in progress */
291 int reading;
292 /* streaming is active */
293 int streaming;
294 /* the driver is currently processing the queue */
295 int capturing;
296
297 struct mutex mutex;
298 spinlock_t capture_lock;
299
300 unsigned int users;
301
302 struct vino_interrupt_data int_data;
303
304 /* V4L support */
305 struct video_device *vdev;
306 };
307
308 struct vino_settings {
309 struct v4l2_device v4l2_dev;
310 struct vino_channel_settings a;
311 struct vino_channel_settings b;
312
313 /* the channel which owns this client:
314 * VINO_NO_CHANNEL, VINO_CHANNEL_A or VINO_CHANNEL_B */
315 unsigned int decoder_owner;
316 struct v4l2_subdev *decoder;
317 unsigned int camera_owner;
318 struct v4l2_subdev *camera;
319
320 /* a lock for vino register access */
321 spinlock_t vino_lock;
322 /* a lock for channel input changes */
323 spinlock_t input_lock;
324
325 unsigned long dummy_page;
326 struct vino_descriptor_table dummy_desc_table;
327 };
328
329 /* Module parameters */
330
331 /*
332 * Using vino_pixel_conversion the ABGR32-format pixels supplied
333 * by the VINO chip can be converted to more common formats
334 * like RGBA32 (or probably RGB24 in the future). This way we
335 * can give out data that can be specified correctly with
336 * the V4L2-definitions.
337 *
338 * The pixel format is specified as RGBA32 when no conversion
339 * is used.
340 *
341 * Note that this only affects the 32-bit bit depth.
342 *
343 * Use non-zero value to enable conversion.
344 */
345 static int vino_pixel_conversion;
346
347 module_param_named(pixelconv, vino_pixel_conversion, int, 0);
348
349 MODULE_PARM_DESC(pixelconv,
350 "enable pixel conversion (non-zero value enables)");
351
352 /* Internal data structures */
353
354 static struct sgi_vino *vino;
355
356 static struct vino_settings *vino_drvdata;
357
358 #define camera_call(o, f, args...) \
359 v4l2_subdev_call(vino_drvdata->camera, o, f, ##args)
360 #define decoder_call(o, f, args...) \
361 v4l2_subdev_call(vino_drvdata->decoder, o, f, ##args)
362
363 static const char *vino_driver_name = "vino";
364 static const char *vino_driver_description = "SGI VINO";
365 static const char *vino_bus_name = "GIO64 bus";
366 static const char *vino_vdev_name_a = "SGI VINO Channel A";
367 static const char *vino_vdev_name_b = "SGI VINO Channel B";
368
369 static void vino_capture_tasklet(unsigned long channel);
370
371 DECLARE_TASKLET(vino_tasklet_a, vino_capture_tasklet, VINO_CHANNEL_A);
372 DECLARE_TASKLET(vino_tasklet_b, vino_capture_tasklet, VINO_CHANNEL_B);
373
374 static const struct vino_input vino_inputs[] = {
375 {
376 .name = "Composite",
377 .std = V4L2_STD_NTSC | V4L2_STD_PAL
378 | V4L2_STD_SECAM,
379 }, {
380 .name = "S-Video",
381 .std = V4L2_STD_NTSC | V4L2_STD_PAL
382 | V4L2_STD_SECAM,
383 }, {
384 .name = "D1/IndyCam",
385 .std = V4L2_STD_NTSC,
386 }
387 };
388
389 static const struct vino_data_format vino_data_formats[] = {
390 {
391 .description = "8-bit greyscale",
392 .bpp = 1,
393 .pixelformat = V4L2_PIX_FMT_GREY,
394 .colorspace = V4L2_COLORSPACE_SMPTE170M,
395 }, {
396 .description = "8-bit dithered RGB 3-3-2",
397 .bpp = 1,
398 .pixelformat = V4L2_PIX_FMT_RGB332,
399 .colorspace = V4L2_COLORSPACE_SRGB,
400 }, {
401 .description = "32-bit RGB",
402 .bpp = 4,
403 .pixelformat = V4L2_PIX_FMT_RGB32,
404 .colorspace = V4L2_COLORSPACE_SRGB,
405 }, {
406 .description = "YUV 4:2:2",
407 .bpp = 2,
408 .pixelformat = V4L2_PIX_FMT_YUYV, // XXX: swapped?
409 .colorspace = V4L2_COLORSPACE_SMPTE170M,
410 }
411 };
412
413 static const struct vino_data_norm vino_data_norms[] = {
414 {
415 .description = "NTSC",
416 .std = V4L2_STD_NTSC,
417 .fps_min = 6,
418 .fps_max = 30,
419 .framelines = 525,
420 .width = VINO_NTSC_WIDTH,
421 .height = VINO_NTSC_HEIGHT,
422 .odd = {
423 .top = VINO_CLIPPING_START_ODD_NTSC,
424 .left = 0,
425 .bottom = VINO_CLIPPING_START_ODD_NTSC
426 + VINO_NTSC_HEIGHT / 2 - 1,
427 .right = VINO_NTSC_WIDTH,
428 },
429 .even = {
430 .top = VINO_CLIPPING_START_EVEN_NTSC,
431 .left = 0,
432 .bottom = VINO_CLIPPING_START_EVEN_NTSC
433 + VINO_NTSC_HEIGHT / 2 - 1,
434 .right = VINO_NTSC_WIDTH,
435 },
436 }, {
437 .description = "PAL",
438 .std = V4L2_STD_PAL,
439 .fps_min = 5,
440 .fps_max = 25,
441 .framelines = 625,
442 .width = VINO_PAL_WIDTH,
443 .height = VINO_PAL_HEIGHT,
444 .odd = {
445 .top = VINO_CLIPPING_START_ODD_PAL,
446 .left = 0,
447 .bottom = VINO_CLIPPING_START_ODD_PAL
448 + VINO_PAL_HEIGHT / 2 - 1,
449 .right = VINO_PAL_WIDTH,
450 },
451 .even = {
452 .top = VINO_CLIPPING_START_EVEN_PAL,
453 .left = 0,
454 .bottom = VINO_CLIPPING_START_EVEN_PAL
455 + VINO_PAL_HEIGHT / 2 - 1,
456 .right = VINO_PAL_WIDTH,
457 },
458 }, {
459 .description = "SECAM",
460 .std = V4L2_STD_SECAM,
461 .fps_min = 5,
462 .fps_max = 25,
463 .framelines = 625,
464 .width = VINO_PAL_WIDTH,
465 .height = VINO_PAL_HEIGHT,
466 .odd = {
467 .top = VINO_CLIPPING_START_ODD_PAL,
468 .left = 0,
469 .bottom = VINO_CLIPPING_START_ODD_PAL
470 + VINO_PAL_HEIGHT / 2 - 1,
471 .right = VINO_PAL_WIDTH,
472 },
473 .even = {
474 .top = VINO_CLIPPING_START_EVEN_PAL,
475 .left = 0,
476 .bottom = VINO_CLIPPING_START_EVEN_PAL
477 + VINO_PAL_HEIGHT / 2 - 1,
478 .right = VINO_PAL_WIDTH,
479 },
480 }, {
481 .description = "NTSC/D1",
482 .std = V4L2_STD_NTSC,
483 .fps_min = 6,
484 .fps_max = 30,
485 .framelines = 525,
486 .width = VINO_NTSC_WIDTH,
487 .height = VINO_NTSC_HEIGHT,
488 .odd = {
489 .top = VINO_CLIPPING_START_ODD_D1,
490 .left = 0,
491 .bottom = VINO_CLIPPING_START_ODD_D1
492 + VINO_NTSC_HEIGHT / 2 - 1,
493 .right = VINO_NTSC_WIDTH,
494 },
495 .even = {
496 .top = VINO_CLIPPING_START_EVEN_D1,
497 .left = 0,
498 .bottom = VINO_CLIPPING_START_EVEN_D1
499 + VINO_NTSC_HEIGHT / 2 - 1,
500 .right = VINO_NTSC_WIDTH,
501 },
502 }
503 };
504
505 #define VINO_INDYCAM_V4L2_CONTROL_COUNT 9
506
507 struct v4l2_queryctrl vino_indycam_v4l2_controls[] = {
508 {
509 .id = V4L2_CID_AUTOGAIN,
510 .type = V4L2_CTRL_TYPE_BOOLEAN,
511 .name = "Automatic Gain Control",
512 .minimum = 0,
513 .maximum = 1,
514 .step = 1,
515 .default_value = INDYCAM_AGC_DEFAULT,
516 }, {
517 .id = V4L2_CID_AUTO_WHITE_BALANCE,
518 .type = V4L2_CTRL_TYPE_BOOLEAN,
519 .name = "Automatic White Balance",
520 .minimum = 0,
521 .maximum = 1,
522 .step = 1,
523 .default_value = INDYCAM_AWB_DEFAULT,
524 }, {
525 .id = V4L2_CID_GAIN,
526 .type = V4L2_CTRL_TYPE_INTEGER,
527 .name = "Gain",
528 .minimum = INDYCAM_GAIN_MIN,
529 .maximum = INDYCAM_GAIN_MAX,
530 .step = 1,
531 .default_value = INDYCAM_GAIN_DEFAULT,
532 }, {
533 .id = INDYCAM_CONTROL_RED_SATURATION,
534 .type = V4L2_CTRL_TYPE_INTEGER,
535 .name = "Red Saturation",
536 .minimum = INDYCAM_RED_SATURATION_MIN,
537 .maximum = INDYCAM_RED_SATURATION_MAX,
538 .step = 1,
539 .default_value = INDYCAM_RED_SATURATION_DEFAULT,
540 }, {
541 .id = INDYCAM_CONTROL_BLUE_SATURATION,
542 .type = V4L2_CTRL_TYPE_INTEGER,
543 .name = "Blue Saturation",
544 .minimum = INDYCAM_BLUE_SATURATION_MIN,
545 .maximum = INDYCAM_BLUE_SATURATION_MAX,
546 .step = 1,
547 .default_value = INDYCAM_BLUE_SATURATION_DEFAULT,
548 }, {
549 .id = V4L2_CID_RED_BALANCE,
550 .type = V4L2_CTRL_TYPE_INTEGER,
551 .name = "Red Balance",
552 .minimum = INDYCAM_RED_BALANCE_MIN,
553 .maximum = INDYCAM_RED_BALANCE_MAX,
554 .step = 1,
555 .default_value = INDYCAM_RED_BALANCE_DEFAULT,
556 }, {
557 .id = V4L2_CID_BLUE_BALANCE,
558 .type = V4L2_CTRL_TYPE_INTEGER,
559 .name = "Blue Balance",
560 .minimum = INDYCAM_BLUE_BALANCE_MIN,
561 .maximum = INDYCAM_BLUE_BALANCE_MAX,
562 .step = 1,
563 .default_value = INDYCAM_BLUE_BALANCE_DEFAULT,
564 }, {
565 .id = V4L2_CID_EXPOSURE,
566 .type = V4L2_CTRL_TYPE_INTEGER,
567 .name = "Shutter Control",
568 .minimum = INDYCAM_SHUTTER_MIN,
569 .maximum = INDYCAM_SHUTTER_MAX,
570 .step = 1,
571 .default_value = INDYCAM_SHUTTER_DEFAULT,
572 }, {
573 .id = V4L2_CID_GAMMA,
574 .type = V4L2_CTRL_TYPE_INTEGER,
575 .name = "Gamma",
576 .minimum = INDYCAM_GAMMA_MIN,
577 .maximum = INDYCAM_GAMMA_MAX,
578 .step = 1,
579 .default_value = INDYCAM_GAMMA_DEFAULT,
580 }
581 };
582
583 #define VINO_SAA7191_V4L2_CONTROL_COUNT 9
584
585 struct v4l2_queryctrl vino_saa7191_v4l2_controls[] = {
586 {
587 .id = V4L2_CID_HUE,
588 .type = V4L2_CTRL_TYPE_INTEGER,
589 .name = "Hue",
590 .minimum = SAA7191_HUE_MIN,
591 .maximum = SAA7191_HUE_MAX,
592 .step = 1,
593 .default_value = SAA7191_HUE_DEFAULT,
594 }, {
595 .id = SAA7191_CONTROL_BANDPASS,
596 .type = V4L2_CTRL_TYPE_INTEGER,
597 .name = "Luminance Bandpass",
598 .minimum = SAA7191_BANDPASS_MIN,
599 .maximum = SAA7191_BANDPASS_MAX,
600 .step = 1,
601 .default_value = SAA7191_BANDPASS_DEFAULT,
602 }, {
603 .id = SAA7191_CONTROL_BANDPASS_WEIGHT,
604 .type = V4L2_CTRL_TYPE_INTEGER,
605 .name = "Luminance Bandpass Weight",
606 .minimum = SAA7191_BANDPASS_WEIGHT_MIN,
607 .maximum = SAA7191_BANDPASS_WEIGHT_MAX,
608 .step = 1,
609 .default_value = SAA7191_BANDPASS_WEIGHT_DEFAULT,
610 }, {
611 .id = SAA7191_CONTROL_CORING,
612 .type = V4L2_CTRL_TYPE_INTEGER,
613 .name = "HF Luminance Coring",
614 .minimum = SAA7191_CORING_MIN,
615 .maximum = SAA7191_CORING_MAX,
616 .step = 1,
617 .default_value = SAA7191_CORING_DEFAULT,
618 }, {
619 .id = SAA7191_CONTROL_FORCE_COLOUR,
620 .type = V4L2_CTRL_TYPE_BOOLEAN,
621 .name = "Force Colour",
622 .minimum = SAA7191_FORCE_COLOUR_MIN,
623 .maximum = SAA7191_FORCE_COLOUR_MAX,
624 .step = 1,
625 .default_value = SAA7191_FORCE_COLOUR_DEFAULT,
626 }, {
627 .id = SAA7191_CONTROL_CHROMA_GAIN,
628 .type = V4L2_CTRL_TYPE_INTEGER,
629 .name = "Chrominance Gain Control",
630 .minimum = SAA7191_CHROMA_GAIN_MIN,
631 .maximum = SAA7191_CHROMA_GAIN_MAX,
632 .step = 1,
633 .default_value = SAA7191_CHROMA_GAIN_DEFAULT,
634 }, {
635 .id = SAA7191_CONTROL_VTRC,
636 .type = V4L2_CTRL_TYPE_BOOLEAN,
637 .name = "VTR Time Constant",
638 .minimum = SAA7191_VTRC_MIN,
639 .maximum = SAA7191_VTRC_MAX,
640 .step = 1,
641 .default_value = SAA7191_VTRC_DEFAULT,
642 }, {
643 .id = SAA7191_CONTROL_LUMA_DELAY,
644 .type = V4L2_CTRL_TYPE_INTEGER,
645 .name = "Luminance Delay Compensation",
646 .minimum = SAA7191_LUMA_DELAY_MIN,
647 .maximum = SAA7191_LUMA_DELAY_MAX,
648 .step = 1,
649 .default_value = SAA7191_LUMA_DELAY_DEFAULT,
650 }, {
651 .id = SAA7191_CONTROL_VNR,
652 .type = V4L2_CTRL_TYPE_INTEGER,
653 .name = "Vertical Noise Reduction",
654 .minimum = SAA7191_VNR_MIN,
655 .maximum = SAA7191_VNR_MAX,
656 .step = 1,
657 .default_value = SAA7191_VNR_DEFAULT,
658 }
659 };
660
661 /* VINO framebuffer/DMA descriptor management */
662
vino_free_buffer_with_count(struct vino_framebuffer * fb,unsigned int count)663 static void vino_free_buffer_with_count(struct vino_framebuffer *fb,
664 unsigned int count)
665 {
666 unsigned int i;
667
668 dprintk("vino_free_buffer_with_count(): count = %d\n", count);
669
670 for (i = 0; i < count; i++) {
671 ClearPageReserved(virt_to_page((void *)fb->desc_table.virtual[i]));
672 dma_unmap_single(NULL,
673 fb->desc_table.dma_cpu[VINO_PAGE_RATIO * i],
674 PAGE_SIZE, DMA_FROM_DEVICE);
675 free_page(fb->desc_table.virtual[i]);
676 }
677
678 dma_free_coherent(NULL,
679 VINO_PAGE_RATIO * (fb->desc_table.page_count + 4) *
680 sizeof(dma_addr_t), (void *)fb->desc_table.dma_cpu,
681 fb->desc_table.dma);
682 kfree(fb->desc_table.virtual);
683
684 memset(fb, 0, sizeof(struct vino_framebuffer));
685 }
686
vino_free_buffer(struct vino_framebuffer * fb)687 static void vino_free_buffer(struct vino_framebuffer *fb)
688 {
689 vino_free_buffer_with_count(fb, fb->desc_table.page_count);
690 }
691
vino_allocate_buffer(struct vino_framebuffer * fb,unsigned int size)692 static int vino_allocate_buffer(struct vino_framebuffer *fb,
693 unsigned int size)
694 {
695 unsigned int count, i, j;
696 int ret = 0;
697
698 dprintk("vino_allocate_buffer():\n");
699
700 if (size < 1)
701 return -EINVAL;
702
703 memset(fb, 0, sizeof(struct vino_framebuffer));
704
705 count = ((size / PAGE_SIZE) + 4) & ~3;
706
707 dprintk("vino_allocate_buffer(): size = %d, count = %d\n",
708 size, count);
709
710 /* allocate memory for table with virtual (page) addresses */
711 fb->desc_table.virtual =
712 kmalloc(count * sizeof(unsigned long), GFP_KERNEL);
713 if (!fb->desc_table.virtual)
714 return -ENOMEM;
715
716 /* allocate memory for table with dma addresses
717 * (has space for four extra descriptors) */
718 fb->desc_table.dma_cpu =
719 dma_alloc_coherent(NULL, VINO_PAGE_RATIO * (count + 4) *
720 sizeof(dma_addr_t), &fb->desc_table.dma,
721 GFP_KERNEL | GFP_DMA);
722 if (!fb->desc_table.dma_cpu) {
723 ret = -ENOMEM;
724 goto out_free_virtual;
725 }
726
727 /* allocate pages for the buffer and acquire the according
728 * dma addresses */
729 for (i = 0; i < count; i++) {
730 dma_addr_t dma_data_addr;
731
732 fb->desc_table.virtual[i] =
733 get_zeroed_page(GFP_KERNEL | GFP_DMA);
734 if (!fb->desc_table.virtual[i]) {
735 ret = -ENOBUFS;
736 break;
737 }
738
739 dma_data_addr =
740 dma_map_single(NULL,
741 (void *)fb->desc_table.virtual[i],
742 PAGE_SIZE, DMA_FROM_DEVICE);
743
744 for (j = 0; j < VINO_PAGE_RATIO; j++) {
745 fb->desc_table.dma_cpu[VINO_PAGE_RATIO * i + j] =
746 dma_data_addr + VINO_PAGE_SIZE * j;
747 }
748
749 SetPageReserved(virt_to_page((void *)fb->desc_table.virtual[i]));
750 }
751
752 /* page_count needs to be set anyway, because the descriptor table has
753 * been allocated according to this number */
754 fb->desc_table.page_count = count;
755
756 if (ret) {
757 /* the descriptor with index i doesn't contain
758 * a valid address yet */
759 vino_free_buffer_with_count(fb, i);
760 return ret;
761 }
762
763 //fb->size = size;
764 fb->size = count * PAGE_SIZE;
765 fb->data_format = VINO_DATA_FMT_NONE;
766
767 /* set the dma stop-bit for the last (count+1)th descriptor */
768 fb->desc_table.dma_cpu[VINO_PAGE_RATIO * count] = VINO_DESC_STOP;
769 return 0;
770
771 out_free_virtual:
772 kfree(fb->desc_table.virtual);
773 return ret;
774 }
775
776 #if 0
777 /* user buffers not fully implemented yet */
778 static int vino_prepare_user_buffer(struct vino_framebuffer *fb,
779 void *user,
780 unsigned int size)
781 {
782 unsigned int count, i, j;
783 int ret = 0;
784
785 dprintk("vino_prepare_user_buffer():\n");
786
787 if (size < 1)
788 return -EINVAL;
789
790 memset(fb, 0, sizeof(struct vino_framebuffer));
791
792 count = ((size / PAGE_SIZE)) & ~3;
793
794 dprintk("vino_prepare_user_buffer(): size = %d, count = %d\n",
795 size, count);
796
797 /* allocate memory for table with virtual (page) addresses */
798 fb->desc_table.virtual = (unsigned long *)
799 kmalloc(count * sizeof(unsigned long), GFP_KERNEL);
800 if (!fb->desc_table.virtual)
801 return -ENOMEM;
802
803 /* allocate memory for table with dma addresses
804 * (has space for four extra descriptors) */
805 fb->desc_table.dma_cpu =
806 dma_alloc_coherent(NULL, VINO_PAGE_RATIO * (count + 4) *
807 sizeof(dma_addr_t), &fb->desc_table.dma,
808 GFP_KERNEL | GFP_DMA);
809 if (!fb->desc_table.dma_cpu) {
810 ret = -ENOMEM;
811 goto out_free_virtual;
812 }
813
814 /* allocate pages for the buffer and acquire the according
815 * dma addresses */
816 for (i = 0; i < count; i++) {
817 dma_addr_t dma_data_addr;
818
819 fb->desc_table.virtual[i] =
820 get_zeroed_page(GFP_KERNEL | GFP_DMA);
821 if (!fb->desc_table.virtual[i]) {
822 ret = -ENOBUFS;
823 break;
824 }
825
826 dma_data_addr =
827 dma_map_single(NULL,
828 (void *)fb->desc_table.virtual[i],
829 PAGE_SIZE, DMA_FROM_DEVICE);
830
831 for (j = 0; j < VINO_PAGE_RATIO; j++) {
832 fb->desc_table.dma_cpu[VINO_PAGE_RATIO * i + j] =
833 dma_data_addr + VINO_PAGE_SIZE * j;
834 }
835
836 SetPageReserved(virt_to_page((void *)fb->desc_table.virtual[i]));
837 }
838
839 /* page_count needs to be set anyway, because the descriptor table has
840 * been allocated according to this number */
841 fb->desc_table.page_count = count;
842
843 if (ret) {
844 /* the descriptor with index i doesn't contain
845 * a valid address yet */
846 vino_free_buffer_with_count(fb, i);
847 return ret;
848 }
849
850 //fb->size = size;
851 fb->size = count * PAGE_SIZE;
852
853 /* set the dma stop-bit for the last (count+1)th descriptor */
854 fb->desc_table.dma_cpu[VINO_PAGE_RATIO * count] = VINO_DESC_STOP;
855 return 0;
856
857 out_free_virtual:
858 kfree(fb->desc_table.virtual);
859 return ret;
860 }
861 #endif
862
vino_sync_buffer(struct vino_framebuffer * fb)863 static void vino_sync_buffer(struct vino_framebuffer *fb)
864 {
865 int i;
866
867 dprintk("vino_sync_buffer():\n");
868
869 for (i = 0; i < fb->desc_table.page_count; i++)
870 dma_sync_single_for_cpu(NULL,
871 fb->desc_table.dma_cpu[VINO_PAGE_RATIO * i],
872 PAGE_SIZE, DMA_FROM_DEVICE);
873 }
874
875 /* Framebuffer fifo functions (need to be locked externally) */
876
vino_fifo_init(struct vino_framebuffer_fifo * f,unsigned int length)877 static inline void vino_fifo_init(struct vino_framebuffer_fifo *f,
878 unsigned int length)
879 {
880 f->length = 0;
881 f->used = 0;
882 f->head = 0;
883 f->tail = 0;
884
885 if (length > VINO_FRAMEBUFFER_COUNT_MAX)
886 length = VINO_FRAMEBUFFER_COUNT_MAX;
887
888 f->length = length;
889 }
890
891 /* returns true/false */
vino_fifo_has_id(struct vino_framebuffer_fifo * f,unsigned int id)892 static inline int vino_fifo_has_id(struct vino_framebuffer_fifo *f,
893 unsigned int id)
894 {
895 unsigned int i;
896
897 for (i = f->head; i == (f->tail - 1); i = (i + 1) % f->length) {
898 if (f->data[i] == id)
899 return 1;
900 }
901
902 return 0;
903 }
904
905 #if 0
906 /* returns true/false */
907 static inline int vino_fifo_full(struct vino_framebuffer_fifo *f)
908 {
909 return (f->used == f->length);
910 }
911 #endif
912
vino_fifo_get_used(struct vino_framebuffer_fifo * f)913 static inline unsigned int vino_fifo_get_used(struct vino_framebuffer_fifo *f)
914 {
915 return f->used;
916 }
917
vino_fifo_enqueue(struct vino_framebuffer_fifo * f,unsigned int id)918 static int vino_fifo_enqueue(struct vino_framebuffer_fifo *f, unsigned int id)
919 {
920 if (id >= f->length) {
921 return VINO_QUEUE_ERROR;
922 }
923
924 if (vino_fifo_has_id(f, id)) {
925 return VINO_QUEUE_ERROR;
926 }
927
928 if (f->used < f->length) {
929 f->data[f->tail] = id;
930 f->tail = (f->tail + 1) % f->length;
931 f->used++;
932 } else {
933 return VINO_QUEUE_ERROR;
934 }
935
936 return 0;
937 }
938
vino_fifo_peek(struct vino_framebuffer_fifo * f,unsigned int * id)939 static int vino_fifo_peek(struct vino_framebuffer_fifo *f, unsigned int *id)
940 {
941 if (f->used > 0) {
942 *id = f->data[f->head];
943 } else {
944 return VINO_QUEUE_ERROR;
945 }
946
947 return 0;
948 }
949
vino_fifo_dequeue(struct vino_framebuffer_fifo * f,unsigned int * id)950 static int vino_fifo_dequeue(struct vino_framebuffer_fifo *f, unsigned int *id)
951 {
952 if (f->used > 0) {
953 *id = f->data[f->head];
954 f->head = (f->head + 1) % f->length;
955 f->used--;
956 } else {
957 return VINO_QUEUE_ERROR;
958 }
959
960 return 0;
961 }
962
963 /* Framebuffer queue functions */
964
965 /* execute with queue_lock locked */
vino_queue_free_with_count(struct vino_framebuffer_queue * q,unsigned int length)966 static void vino_queue_free_with_count(struct vino_framebuffer_queue *q,
967 unsigned int length)
968 {
969 unsigned int i;
970
971 q->length = 0;
972 memset(&q->in, 0, sizeof(struct vino_framebuffer_fifo));
973 memset(&q->out, 0, sizeof(struct vino_framebuffer_fifo));
974 for (i = 0; i < length; i++) {
975 dprintk("vino_queue_free_with_count(): freeing buffer %d\n",
976 i);
977 vino_free_buffer(q->buffer[i]);
978 kfree(q->buffer[i]);
979 }
980
981 q->type = VINO_MEMORY_NONE;
982 q->magic = 0;
983 }
984
vino_queue_free(struct vino_framebuffer_queue * q)985 static void vino_queue_free(struct vino_framebuffer_queue *q)
986 {
987 dprintk("vino_queue_free():\n");
988
989 if (q->magic != VINO_QUEUE_MAGIC)
990 return;
991 if (q->type != VINO_MEMORY_MMAP)
992 return;
993
994 mutex_lock(&q->queue_mutex);
995
996 vino_queue_free_with_count(q, q->length);
997
998 mutex_unlock(&q->queue_mutex);
999 }
1000
vino_queue_init(struct vino_framebuffer_queue * q,unsigned int * length)1001 static int vino_queue_init(struct vino_framebuffer_queue *q,
1002 unsigned int *length)
1003 {
1004 unsigned int i;
1005 int ret = 0;
1006
1007 dprintk("vino_queue_init(): length = %d\n", *length);
1008
1009 if (q->magic == VINO_QUEUE_MAGIC) {
1010 dprintk("vino_queue_init(): queue already initialized!\n");
1011 return -EINVAL;
1012 }
1013
1014 if (q->type != VINO_MEMORY_NONE) {
1015 dprintk("vino_queue_init(): queue already initialized!\n");
1016 return -EINVAL;
1017 }
1018
1019 if (*length < 1)
1020 return -EINVAL;
1021
1022 mutex_lock(&q->queue_mutex);
1023
1024 if (*length > VINO_FRAMEBUFFER_COUNT_MAX)
1025 *length = VINO_FRAMEBUFFER_COUNT_MAX;
1026
1027 q->length = 0;
1028
1029 for (i = 0; i < *length; i++) {
1030 dprintk("vino_queue_init(): allocating buffer %d\n", i);
1031 q->buffer[i] = kmalloc(sizeof(struct vino_framebuffer),
1032 GFP_KERNEL);
1033 if (!q->buffer[i]) {
1034 dprintk("vino_queue_init(): kmalloc() failed\n");
1035 ret = -ENOMEM;
1036 break;
1037 }
1038
1039 ret = vino_allocate_buffer(q->buffer[i],
1040 VINO_FRAMEBUFFER_SIZE);
1041 if (ret) {
1042 kfree(q->buffer[i]);
1043 dprintk("vino_queue_init(): "
1044 "vino_allocate_buffer() failed\n");
1045 break;
1046 }
1047
1048 q->buffer[i]->id = i;
1049 if (i > 0) {
1050 q->buffer[i]->offset = q->buffer[i - 1]->offset +
1051 q->buffer[i - 1]->size;
1052 } else {
1053 q->buffer[i]->offset = 0;
1054 }
1055
1056 spin_lock_init(&q->buffer[i]->state_lock);
1057
1058 dprintk("vino_queue_init(): buffer = %d, offset = %d, "
1059 "size = %d\n", i, q->buffer[i]->offset,
1060 q->buffer[i]->size);
1061 }
1062
1063 if (ret) {
1064 vino_queue_free_with_count(q, i);
1065 *length = 0;
1066 } else {
1067 q->length = *length;
1068 vino_fifo_init(&q->in, q->length);
1069 vino_fifo_init(&q->out, q->length);
1070 q->type = VINO_MEMORY_MMAP;
1071 q->magic = VINO_QUEUE_MAGIC;
1072 }
1073
1074 mutex_unlock(&q->queue_mutex);
1075
1076 return ret;
1077 }
1078
vino_queue_add(struct vino_framebuffer_queue * q,unsigned int id)1079 static struct vino_framebuffer *vino_queue_add(struct
1080 vino_framebuffer_queue *q,
1081 unsigned int id)
1082 {
1083 struct vino_framebuffer *ret = NULL;
1084 unsigned int total;
1085 unsigned long flags;
1086
1087 dprintk("vino_queue_add(): id = %d\n", id);
1088
1089 if (q->magic != VINO_QUEUE_MAGIC) {
1090 return ret;
1091 }
1092
1093 spin_lock_irqsave(&q->queue_lock, flags);
1094
1095 if (q->length == 0)
1096 goto out;
1097
1098 if (id >= q->length)
1099 goto out;
1100
1101 /* not needed?: if (vino_fifo_full(&q->out)) {
1102 goto out;
1103 }*/
1104 /* check that outgoing queue isn't already full
1105 * (or that it won't become full) */
1106 total = vino_fifo_get_used(&q->in) +
1107 vino_fifo_get_used(&q->out);
1108 if (total >= q->length)
1109 goto out;
1110
1111 if (vino_fifo_enqueue(&q->in, id))
1112 goto out;
1113
1114 ret = q->buffer[id];
1115
1116 out:
1117 spin_unlock_irqrestore(&q->queue_lock, flags);
1118
1119 return ret;
1120 }
1121
vino_queue_transfer(struct vino_framebuffer_queue * q)1122 static struct vino_framebuffer *vino_queue_transfer(struct
1123 vino_framebuffer_queue *q)
1124 {
1125 struct vino_framebuffer *ret = NULL;
1126 struct vino_framebuffer *fb;
1127 int id;
1128 unsigned long flags;
1129
1130 dprintk("vino_queue_transfer():\n");
1131
1132 if (q->magic != VINO_QUEUE_MAGIC) {
1133 return ret;
1134 }
1135
1136 spin_lock_irqsave(&q->queue_lock, flags);
1137
1138 if (q->length == 0)
1139 goto out;
1140
1141 // now this actually removes an entry from the incoming queue
1142 if (vino_fifo_dequeue(&q->in, &id)) {
1143 goto out;
1144 }
1145
1146 dprintk("vino_queue_transfer(): id = %d\n", id);
1147 fb = q->buffer[id];
1148
1149 // we have already checked that the outgoing queue is not full, but...
1150 if (vino_fifo_enqueue(&q->out, id)) {
1151 printk(KERN_ERR "vino_queue_transfer(): "
1152 "outgoing queue is full, this shouldn't happen!\n");
1153 goto out;
1154 }
1155
1156 ret = fb;
1157 out:
1158 spin_unlock_irqrestore(&q->queue_lock, flags);
1159
1160 return ret;
1161 }
1162
1163 /* returns true/false */
vino_queue_incoming_contains(struct vino_framebuffer_queue * q,unsigned int id)1164 static int vino_queue_incoming_contains(struct vino_framebuffer_queue *q,
1165 unsigned int id)
1166 {
1167 int ret = 0;
1168 unsigned long flags;
1169
1170 if (q->magic != VINO_QUEUE_MAGIC) {
1171 return ret;
1172 }
1173
1174 spin_lock_irqsave(&q->queue_lock, flags);
1175
1176 if (q->length == 0)
1177 goto out;
1178
1179 ret = vino_fifo_has_id(&q->in, id);
1180
1181 out:
1182 spin_unlock_irqrestore(&q->queue_lock, flags);
1183
1184 return ret;
1185 }
1186
1187 /* returns true/false */
vino_queue_outgoing_contains(struct vino_framebuffer_queue * q,unsigned int id)1188 static int vino_queue_outgoing_contains(struct vino_framebuffer_queue *q,
1189 unsigned int id)
1190 {
1191 int ret = 0;
1192 unsigned long flags;
1193
1194 if (q->magic != VINO_QUEUE_MAGIC) {
1195 return ret;
1196 }
1197
1198 spin_lock_irqsave(&q->queue_lock, flags);
1199
1200 if (q->length == 0)
1201 goto out;
1202
1203 ret = vino_fifo_has_id(&q->out, id);
1204
1205 out:
1206 spin_unlock_irqrestore(&q->queue_lock, flags);
1207
1208 return ret;
1209 }
1210
vino_queue_get_incoming(struct vino_framebuffer_queue * q,unsigned int * used)1211 static int vino_queue_get_incoming(struct vino_framebuffer_queue *q,
1212 unsigned int *used)
1213 {
1214 int ret = 0;
1215 unsigned long flags;
1216
1217 if (q->magic != VINO_QUEUE_MAGIC) {
1218 return VINO_QUEUE_ERROR;
1219 }
1220
1221 spin_lock_irqsave(&q->queue_lock, flags);
1222
1223 if (q->length == 0) {
1224 ret = VINO_QUEUE_ERROR;
1225 goto out;
1226 }
1227
1228 *used = vino_fifo_get_used(&q->in);
1229
1230 out:
1231 spin_unlock_irqrestore(&q->queue_lock, flags);
1232
1233 return ret;
1234 }
1235
vino_queue_get_outgoing(struct vino_framebuffer_queue * q,unsigned int * used)1236 static int vino_queue_get_outgoing(struct vino_framebuffer_queue *q,
1237 unsigned int *used)
1238 {
1239 int ret = 0;
1240 unsigned long flags;
1241
1242 if (q->magic != VINO_QUEUE_MAGIC) {
1243 return VINO_QUEUE_ERROR;
1244 }
1245
1246 spin_lock_irqsave(&q->queue_lock, flags);
1247
1248 if (q->length == 0) {
1249 ret = VINO_QUEUE_ERROR;
1250 goto out;
1251 }
1252
1253 *used = vino_fifo_get_used(&q->out);
1254
1255 out:
1256 spin_unlock_irqrestore(&q->queue_lock, flags);
1257
1258 return ret;
1259 }
1260
1261 #if 0
1262 static int vino_queue_get_total(struct vino_framebuffer_queue *q,
1263 unsigned int *total)
1264 {
1265 int ret = 0;
1266 unsigned long flags;
1267
1268 if (q->magic != VINO_QUEUE_MAGIC) {
1269 return VINO_QUEUE_ERROR;
1270 }
1271
1272 spin_lock_irqsave(&q->queue_lock, flags);
1273
1274 if (q->length == 0) {
1275 ret = VINO_QUEUE_ERROR;
1276 goto out;
1277 }
1278
1279 *total = vino_fifo_get_used(&q->in) +
1280 vino_fifo_get_used(&q->out);
1281
1282 out:
1283 spin_unlock_irqrestore(&q->queue_lock, flags);
1284
1285 return ret;
1286 }
1287 #endif
1288
vino_queue_peek(struct vino_framebuffer_queue * q,unsigned int * id)1289 static struct vino_framebuffer *vino_queue_peek(struct
1290 vino_framebuffer_queue *q,
1291 unsigned int *id)
1292 {
1293 struct vino_framebuffer *ret = NULL;
1294 unsigned long flags;
1295
1296 if (q->magic != VINO_QUEUE_MAGIC) {
1297 return ret;
1298 }
1299
1300 spin_lock_irqsave(&q->queue_lock, flags);
1301
1302 if (q->length == 0)
1303 goto out;
1304
1305 if (vino_fifo_peek(&q->in, id)) {
1306 goto out;
1307 }
1308
1309 ret = q->buffer[*id];
1310 out:
1311 spin_unlock_irqrestore(&q->queue_lock, flags);
1312
1313 return ret;
1314 }
1315
vino_queue_remove(struct vino_framebuffer_queue * q,unsigned int * id)1316 static struct vino_framebuffer *vino_queue_remove(struct
1317 vino_framebuffer_queue *q,
1318 unsigned int *id)
1319 {
1320 struct vino_framebuffer *ret = NULL;
1321 unsigned long flags;
1322 dprintk("vino_queue_remove():\n");
1323
1324 if (q->magic != VINO_QUEUE_MAGIC) {
1325 return ret;
1326 }
1327
1328 spin_lock_irqsave(&q->queue_lock, flags);
1329
1330 if (q->length == 0)
1331 goto out;
1332
1333 if (vino_fifo_dequeue(&q->out, id)) {
1334 goto out;
1335 }
1336
1337 dprintk("vino_queue_remove(): id = %d\n", *id);
1338 ret = q->buffer[*id];
1339 out:
1340 spin_unlock_irqrestore(&q->queue_lock, flags);
1341
1342 return ret;
1343 }
1344
1345 static struct
vino_queue_get_buffer(struct vino_framebuffer_queue * q,unsigned int id)1346 vino_framebuffer *vino_queue_get_buffer(struct vino_framebuffer_queue *q,
1347 unsigned int id)
1348 {
1349 struct vino_framebuffer *ret = NULL;
1350 unsigned long flags;
1351
1352 if (q->magic != VINO_QUEUE_MAGIC) {
1353 return ret;
1354 }
1355
1356 spin_lock_irqsave(&q->queue_lock, flags);
1357
1358 if (q->length == 0)
1359 goto out;
1360
1361 if (id >= q->length)
1362 goto out;
1363
1364 ret = q->buffer[id];
1365 out:
1366 spin_unlock_irqrestore(&q->queue_lock, flags);
1367
1368 return ret;
1369 }
1370
vino_queue_get_length(struct vino_framebuffer_queue * q)1371 static unsigned int vino_queue_get_length(struct vino_framebuffer_queue *q)
1372 {
1373 unsigned int length = 0;
1374 unsigned long flags;
1375
1376 if (q->magic != VINO_QUEUE_MAGIC) {
1377 return length;
1378 }
1379
1380 spin_lock_irqsave(&q->queue_lock, flags);
1381 length = q->length;
1382 spin_unlock_irqrestore(&q->queue_lock, flags);
1383
1384 return length;
1385 }
1386
vino_queue_has_mapped_buffers(struct vino_framebuffer_queue * q)1387 static int vino_queue_has_mapped_buffers(struct vino_framebuffer_queue *q)
1388 {
1389 unsigned int i;
1390 int ret = 0;
1391 unsigned long flags;
1392
1393 if (q->magic != VINO_QUEUE_MAGIC) {
1394 return ret;
1395 }
1396
1397 spin_lock_irqsave(&q->queue_lock, flags);
1398 for (i = 0; i < q->length; i++) {
1399 if (q->buffer[i]->map_count > 0) {
1400 ret = 1;
1401 break;
1402 }
1403 }
1404 spin_unlock_irqrestore(&q->queue_lock, flags);
1405
1406 return ret;
1407 }
1408
1409 /* VINO functions */
1410
1411 /* execute with input_lock locked */
vino_update_line_size(struct vino_channel_settings * vcs)1412 static void vino_update_line_size(struct vino_channel_settings *vcs)
1413 {
1414 unsigned int w = vcs->clipping.right - vcs->clipping.left;
1415 unsigned int d = vcs->decimation;
1416 unsigned int bpp = vino_data_formats[vcs->data_format].bpp;
1417 unsigned int lsize;
1418
1419 dprintk("update_line_size(): before: w = %d, d = %d, "
1420 "line_size = %d\n", w, d, vcs->line_size);
1421
1422 /* line size must be multiple of 8 bytes */
1423 lsize = (bpp * (w / d)) & ~7;
1424 w = (lsize / bpp) * d;
1425
1426 vcs->clipping.right = vcs->clipping.left + w;
1427 vcs->line_size = lsize;
1428
1429 dprintk("update_line_size(): after: w = %d, d = %d, "
1430 "line_size = %d\n", w, d, vcs->line_size);
1431 }
1432
1433 /* execute with input_lock locked */
vino_set_clipping(struct vino_channel_settings * vcs,unsigned int x,unsigned int y,unsigned int w,unsigned int h)1434 static void vino_set_clipping(struct vino_channel_settings *vcs,
1435 unsigned int x, unsigned int y,
1436 unsigned int w, unsigned int h)
1437 {
1438 unsigned int maxwidth, maxheight;
1439 unsigned int d;
1440
1441 maxwidth = vino_data_norms[vcs->data_norm].width;
1442 maxheight = vino_data_norms[vcs->data_norm].height;
1443 d = vcs->decimation;
1444
1445 y &= ~1; /* odd/even fields */
1446
1447 if (x > maxwidth) {
1448 x = 0;
1449 }
1450 if (y > maxheight) {
1451 y = 0;
1452 }
1453
1454 if (((w / d) < VINO_MIN_WIDTH)
1455 || ((h / d) < VINO_MIN_HEIGHT)) {
1456 w = VINO_MIN_WIDTH * d;
1457 h = VINO_MIN_HEIGHT * d;
1458 }
1459
1460 if ((x + w) > maxwidth) {
1461 w = maxwidth - x;
1462 if ((w / d) < VINO_MIN_WIDTH)
1463 x = maxwidth - VINO_MIN_WIDTH * d;
1464 }
1465 if ((y + h) > maxheight) {
1466 h = maxheight - y;
1467 if ((h / d) < VINO_MIN_HEIGHT)
1468 y = maxheight - VINO_MIN_HEIGHT * d;
1469 }
1470
1471 vcs->clipping.left = x;
1472 vcs->clipping.top = y;
1473 vcs->clipping.right = x + w;
1474 vcs->clipping.bottom = y + h;
1475
1476 vino_update_line_size(vcs);
1477
1478 dprintk("clipping %d, %d, %d, %d / %d - %d\n",
1479 vcs->clipping.left, vcs->clipping.top, vcs->clipping.right,
1480 vcs->clipping.bottom, vcs->decimation, vcs->line_size);
1481 }
1482
1483 /* execute with input_lock locked */
vino_set_default_clipping(struct vino_channel_settings * vcs)1484 static inline void vino_set_default_clipping(struct vino_channel_settings *vcs)
1485 {
1486 vino_set_clipping(vcs, 0, 0, vino_data_norms[vcs->data_norm].width,
1487 vino_data_norms[vcs->data_norm].height);
1488 }
1489
1490 /* execute with input_lock locked */
vino_set_scaling(struct vino_channel_settings * vcs,unsigned int w,unsigned int h)1491 static void vino_set_scaling(struct vino_channel_settings *vcs,
1492 unsigned int w, unsigned int h)
1493 {
1494 unsigned int x, y, curw, curh, d;
1495
1496 x = vcs->clipping.left;
1497 y = vcs->clipping.top;
1498 curw = vcs->clipping.right - vcs->clipping.left;
1499 curh = vcs->clipping.bottom - vcs->clipping.top;
1500
1501 d = max(curw / w, curh / h);
1502
1503 dprintk("scaling w: %d, h: %d, curw: %d, curh: %d, d: %d\n",
1504 w, h, curw, curh, d);
1505
1506 if (d < 1) {
1507 d = 1;
1508 } else if (d > 8) {
1509 d = 8;
1510 }
1511
1512 vcs->decimation = d;
1513 vino_set_clipping(vcs, x, y, w * d, h * d);
1514
1515 dprintk("scaling %d, %d, %d, %d / %d - %d\n", vcs->clipping.left,
1516 vcs->clipping.top, vcs->clipping.right, vcs->clipping.bottom,
1517 vcs->decimation, vcs->line_size);
1518 }
1519
1520 /* execute with input_lock locked */
vino_set_default_scaling(struct vino_channel_settings * vcs)1521 static inline void vino_set_default_scaling(struct vino_channel_settings *vcs)
1522 {
1523 vino_set_scaling(vcs, vcs->clipping.right - vcs->clipping.left,
1524 vcs->clipping.bottom - vcs->clipping.top);
1525 }
1526
1527 /* execute with input_lock locked */
vino_set_framerate(struct vino_channel_settings * vcs,unsigned int fps)1528 static void vino_set_framerate(struct vino_channel_settings *vcs,
1529 unsigned int fps)
1530 {
1531 unsigned int mask;
1532
1533 switch (vcs->data_norm) {
1534 case VINO_DATA_NORM_NTSC:
1535 case VINO_DATA_NORM_D1:
1536 fps = (unsigned int)(fps / 6) * 6; // FIXME: round!
1537
1538 if (fps < vino_data_norms[vcs->data_norm].fps_min)
1539 fps = vino_data_norms[vcs->data_norm].fps_min;
1540 if (fps > vino_data_norms[vcs->data_norm].fps_max)
1541 fps = vino_data_norms[vcs->data_norm].fps_max;
1542
1543 switch (fps) {
1544 case 6:
1545 mask = 0x003;
1546 break;
1547 case 12:
1548 mask = 0x0c3;
1549 break;
1550 case 18:
1551 mask = 0x333;
1552 break;
1553 case 24:
1554 mask = 0x3ff;
1555 break;
1556 case 30:
1557 mask = 0xfff;
1558 break;
1559 default:
1560 mask = VINO_FRAMERT_FULL;
1561 }
1562 vcs->framert_reg = VINO_FRAMERT_RT(mask);
1563 break;
1564 case VINO_DATA_NORM_PAL:
1565 case VINO_DATA_NORM_SECAM:
1566 fps = (unsigned int)(fps / 5) * 5; // FIXME: round!
1567
1568 if (fps < vino_data_norms[vcs->data_norm].fps_min)
1569 fps = vino_data_norms[vcs->data_norm].fps_min;
1570 if (fps > vino_data_norms[vcs->data_norm].fps_max)
1571 fps = vino_data_norms[vcs->data_norm].fps_max;
1572
1573 switch (fps) {
1574 case 5:
1575 mask = 0x003;
1576 break;
1577 case 10:
1578 mask = 0x0c3;
1579 break;
1580 case 15:
1581 mask = 0x333;
1582 break;
1583 case 20:
1584 mask = 0x0ff;
1585 break;
1586 case 25:
1587 mask = 0x3ff;
1588 break;
1589 default:
1590 mask = VINO_FRAMERT_FULL;
1591 }
1592 vcs->framert_reg = VINO_FRAMERT_RT(mask) | VINO_FRAMERT_PAL;
1593 break;
1594 }
1595
1596 vcs->fps = fps;
1597 }
1598
1599 /* execute with input_lock locked */
vino_set_default_framerate(struct vino_channel_settings * vcs)1600 static inline void vino_set_default_framerate(struct
1601 vino_channel_settings *vcs)
1602 {
1603 vino_set_framerate(vcs, vino_data_norms[vcs->data_norm].fps_max);
1604 }
1605
1606 /* VINO I2C bus functions */
1607
1608 struct i2c_algo_sgi_data {
1609 void *data; /* private data for lowlevel routines */
1610 unsigned (*getctrl)(void *data);
1611 void (*setctrl)(void *data, unsigned val);
1612 unsigned (*rdata)(void *data);
1613 void (*wdata)(void *data, unsigned val);
1614
1615 int xfer_timeout;
1616 int ack_timeout;
1617 };
1618
wait_xfer_done(struct i2c_algo_sgi_data * adap)1619 static int wait_xfer_done(struct i2c_algo_sgi_data *adap)
1620 {
1621 int i;
1622
1623 for (i = 0; i < adap->xfer_timeout; i++) {
1624 if ((adap->getctrl(adap->data) & SGI_I2C_XFER_BUSY) == 0)
1625 return 0;
1626 udelay(1);
1627 }
1628
1629 return -ETIMEDOUT;
1630 }
1631
wait_ack(struct i2c_algo_sgi_data * adap)1632 static int wait_ack(struct i2c_algo_sgi_data *adap)
1633 {
1634 int i;
1635
1636 if (wait_xfer_done(adap))
1637 return -ETIMEDOUT;
1638 for (i = 0; i < adap->ack_timeout; i++) {
1639 if ((adap->getctrl(adap->data) & SGI_I2C_NACK) == 0)
1640 return 0;
1641 udelay(1);
1642 }
1643
1644 return -ETIMEDOUT;
1645 }
1646
force_idle(struct i2c_algo_sgi_data * adap)1647 static int force_idle(struct i2c_algo_sgi_data *adap)
1648 {
1649 int i;
1650
1651 adap->setctrl(adap->data, SGI_I2C_FORCE_IDLE);
1652 for (i = 0; i < adap->xfer_timeout; i++) {
1653 if ((adap->getctrl(adap->data) & SGI_I2C_NOT_IDLE) == 0)
1654 goto out;
1655 udelay(1);
1656 }
1657 return -ETIMEDOUT;
1658 out:
1659 if (adap->getctrl(adap->data) & SGI_I2C_BUS_ERR)
1660 return -EIO;
1661 return 0;
1662 }
1663
do_address(struct i2c_algo_sgi_data * adap,unsigned int addr,int rd)1664 static int do_address(struct i2c_algo_sgi_data *adap, unsigned int addr,
1665 int rd)
1666 {
1667 if (rd)
1668 adap->setctrl(adap->data, SGI_I2C_NOT_IDLE);
1669 /* Check if bus is idle, eventually force it to do so */
1670 if (adap->getctrl(adap->data) & SGI_I2C_NOT_IDLE)
1671 if (force_idle(adap))
1672 return -EIO;
1673 /* Write out the i2c chip address and specify operation */
1674 adap->setctrl(adap->data,
1675 SGI_I2C_HOLD_BUS | SGI_I2C_WRITE | SGI_I2C_NOT_IDLE);
1676 if (rd)
1677 addr |= 1;
1678 adap->wdata(adap->data, addr);
1679 if (wait_ack(adap))
1680 return -EIO;
1681 return 0;
1682 }
1683
i2c_read(struct i2c_algo_sgi_data * adap,unsigned char * buf,unsigned int len)1684 static int i2c_read(struct i2c_algo_sgi_data *adap, unsigned char *buf,
1685 unsigned int len)
1686 {
1687 int i;
1688
1689 adap->setctrl(adap->data,
1690 SGI_I2C_HOLD_BUS | SGI_I2C_READ | SGI_I2C_NOT_IDLE);
1691 for (i = 0; i < len; i++) {
1692 if (wait_xfer_done(adap))
1693 return -EIO;
1694 buf[i] = adap->rdata(adap->data);
1695 }
1696 adap->setctrl(adap->data, SGI_I2C_RELEASE_BUS | SGI_I2C_FORCE_IDLE);
1697
1698 return 0;
1699
1700 }
1701
i2c_write(struct i2c_algo_sgi_data * adap,unsigned char * buf,unsigned int len)1702 static int i2c_write(struct i2c_algo_sgi_data *adap, unsigned char *buf,
1703 unsigned int len)
1704 {
1705 int i;
1706
1707 /* We are already in write state */
1708 for (i = 0; i < len; i++) {
1709 adap->wdata(adap->data, buf[i]);
1710 if (wait_ack(adap))
1711 return -EIO;
1712 }
1713 return 0;
1714 }
1715
sgi_xfer(struct i2c_adapter * i2c_adap,struct i2c_msg * msgs,int num)1716 static int sgi_xfer(struct i2c_adapter *i2c_adap, struct i2c_msg *msgs,
1717 int num)
1718 {
1719 struct i2c_algo_sgi_data *adap = i2c_adap->algo_data;
1720 struct i2c_msg *p;
1721 int i, err = 0;
1722
1723 for (i = 0; !err && i < num; i++) {
1724 p = &msgs[i];
1725 err = do_address(adap, p->addr, p->flags & I2C_M_RD);
1726 if (err || !p->len)
1727 continue;
1728 if (p->flags & I2C_M_RD)
1729 err = i2c_read(adap, p->buf, p->len);
1730 else
1731 err = i2c_write(adap, p->buf, p->len);
1732 }
1733
1734 return (err < 0) ? err : i;
1735 }
1736
sgi_func(struct i2c_adapter * adap)1737 static u32 sgi_func(struct i2c_adapter *adap)
1738 {
1739 return I2C_FUNC_SMBUS_EMUL;
1740 }
1741
1742 static const struct i2c_algorithm sgi_algo = {
1743 .master_xfer = sgi_xfer,
1744 .functionality = sgi_func,
1745 };
1746
i2c_vino_getctrl(void * data)1747 static unsigned i2c_vino_getctrl(void *data)
1748 {
1749 return vino->i2c_control;
1750 }
1751
i2c_vino_setctrl(void * data,unsigned val)1752 static void i2c_vino_setctrl(void *data, unsigned val)
1753 {
1754 vino->i2c_control = val;
1755 }
1756
i2c_vino_rdata(void * data)1757 static unsigned i2c_vino_rdata(void *data)
1758 {
1759 return vino->i2c_data;
1760 }
1761
i2c_vino_wdata(void * data,unsigned val)1762 static void i2c_vino_wdata(void *data, unsigned val)
1763 {
1764 vino->i2c_data = val;
1765 }
1766
1767 static struct i2c_algo_sgi_data i2c_sgi_vino_data = {
1768 .getctrl = &i2c_vino_getctrl,
1769 .setctrl = &i2c_vino_setctrl,
1770 .rdata = &i2c_vino_rdata,
1771 .wdata = &i2c_vino_wdata,
1772 .xfer_timeout = 200,
1773 .ack_timeout = 1000,
1774 };
1775
1776 static struct i2c_adapter vino_i2c_adapter = {
1777 .name = "VINO I2C bus",
1778 .algo = &sgi_algo,
1779 .algo_data = &i2c_sgi_vino_data,
1780 .owner = THIS_MODULE,
1781 };
1782
1783 /*
1784 * Prepare VINO for DMA transfer...
1785 * (execute only with vino_lock and input_lock locked)
1786 */
vino_dma_setup(struct vino_channel_settings * vcs,struct vino_framebuffer * fb)1787 static int vino_dma_setup(struct vino_channel_settings *vcs,
1788 struct vino_framebuffer *fb)
1789 {
1790 u32 ctrl, intr;
1791 struct sgi_vino_channel *ch;
1792 const struct vino_data_norm *norm;
1793
1794 dprintk("vino_dma_setup():\n");
1795
1796 vcs->field = 0;
1797 fb->frame_counter = 0;
1798
1799 ch = (vcs->channel == VINO_CHANNEL_A) ? &vino->a : &vino->b;
1800 norm = &vino_data_norms[vcs->data_norm];
1801
1802 ch->page_index = 0;
1803 ch->line_count = 0;
1804
1805 /* VINO line size register is set 8 bytes less than actual */
1806 ch->line_size = vcs->line_size - 8;
1807
1808 /* let VINO know where to transfer data */
1809 ch->start_desc_tbl = fb->desc_table.dma;
1810 ch->next_4_desc = fb->desc_table.dma;
1811
1812 /* give vino time to fetch the first four descriptors, 5 usec
1813 * should be more than enough time */
1814 udelay(VINO_DESC_FETCH_DELAY);
1815
1816 dprintk("vino_dma_setup(): start desc = %08x, next 4 desc = %08x\n",
1817 ch->start_desc_tbl, ch->next_4_desc);
1818
1819 /* set the alpha register */
1820 ch->alpha = vcs->alpha;
1821
1822 /* set clipping registers */
1823 ch->clip_start = VINO_CLIP_ODD(norm->odd.top + vcs->clipping.top / 2) |
1824 VINO_CLIP_EVEN(norm->even.top +
1825 vcs->clipping.top / 2) |
1826 VINO_CLIP_X(vcs->clipping.left);
1827 ch->clip_end = VINO_CLIP_ODD(norm->odd.top +
1828 vcs->clipping.bottom / 2 - 1) |
1829 VINO_CLIP_EVEN(norm->even.top +
1830 vcs->clipping.bottom / 2 - 1) |
1831 VINO_CLIP_X(vcs->clipping.right);
1832
1833 /* set the size of actual content in the buffer (DECIMATION !) */
1834 fb->data_size = ((vcs->clipping.right - vcs->clipping.left) /
1835 vcs->decimation) *
1836 ((vcs->clipping.bottom - vcs->clipping.top) /
1837 vcs->decimation) *
1838 vino_data_formats[vcs->data_format].bpp;
1839
1840 ch->frame_rate = vcs->framert_reg;
1841
1842 ctrl = vino->control;
1843 intr = vino->intr_status;
1844
1845 if (vcs->channel == VINO_CHANNEL_A) {
1846 /* All interrupt conditions for this channel was cleared
1847 * so clear the interrupt status register and enable
1848 * interrupts */
1849 intr &= ~VINO_INTSTAT_A;
1850 ctrl |= VINO_CTRL_A_INT;
1851
1852 /* enable synchronization */
1853 ctrl |= VINO_CTRL_A_SYNC_ENBL;
1854
1855 /* enable frame assembly */
1856 ctrl |= VINO_CTRL_A_INTERLEAVE_ENBL;
1857
1858 /* set decimation used */
1859 if (vcs->decimation < 2)
1860 ctrl &= ~VINO_CTRL_A_DEC_ENBL;
1861 else {
1862 ctrl |= VINO_CTRL_A_DEC_ENBL;
1863 ctrl &= ~VINO_CTRL_A_DEC_SCALE_MASK;
1864 ctrl |= (vcs->decimation - 1) <<
1865 VINO_CTRL_A_DEC_SCALE_SHIFT;
1866 }
1867
1868 /* select input interface */
1869 if (vcs->input == VINO_INPUT_D1)
1870 ctrl |= VINO_CTRL_A_SELECT;
1871 else
1872 ctrl &= ~VINO_CTRL_A_SELECT;
1873
1874 /* palette */
1875 ctrl &= ~(VINO_CTRL_A_LUMA_ONLY | VINO_CTRL_A_RGB |
1876 VINO_CTRL_A_DITHER);
1877 } else {
1878 intr &= ~VINO_INTSTAT_B;
1879 ctrl |= VINO_CTRL_B_INT;
1880
1881 ctrl |= VINO_CTRL_B_SYNC_ENBL;
1882 ctrl |= VINO_CTRL_B_INTERLEAVE_ENBL;
1883
1884 if (vcs->decimation < 2)
1885 ctrl &= ~VINO_CTRL_B_DEC_ENBL;
1886 else {
1887 ctrl |= VINO_CTRL_B_DEC_ENBL;
1888 ctrl &= ~VINO_CTRL_B_DEC_SCALE_MASK;
1889 ctrl |= (vcs->decimation - 1) <<
1890 VINO_CTRL_B_DEC_SCALE_SHIFT;
1891
1892 }
1893 if (vcs->input == VINO_INPUT_D1)
1894 ctrl |= VINO_CTRL_B_SELECT;
1895 else
1896 ctrl &= ~VINO_CTRL_B_SELECT;
1897
1898 ctrl &= ~(VINO_CTRL_B_LUMA_ONLY | VINO_CTRL_B_RGB |
1899 VINO_CTRL_B_DITHER);
1900 }
1901
1902 /* set palette */
1903 fb->data_format = vcs->data_format;
1904
1905 switch (vcs->data_format) {
1906 case VINO_DATA_FMT_GREY:
1907 ctrl |= (vcs->channel == VINO_CHANNEL_A) ?
1908 VINO_CTRL_A_LUMA_ONLY : VINO_CTRL_B_LUMA_ONLY;
1909 break;
1910 case VINO_DATA_FMT_RGB32:
1911 ctrl |= (vcs->channel == VINO_CHANNEL_A) ?
1912 VINO_CTRL_A_RGB : VINO_CTRL_B_RGB;
1913 break;
1914 case VINO_DATA_FMT_YUV:
1915 /* nothing needs to be done */
1916 break;
1917 case VINO_DATA_FMT_RGB332:
1918 ctrl |= (vcs->channel == VINO_CHANNEL_A) ?
1919 VINO_CTRL_A_RGB | VINO_CTRL_A_DITHER :
1920 VINO_CTRL_B_RGB | VINO_CTRL_B_DITHER;
1921 break;
1922 }
1923
1924 vino->intr_status = intr;
1925 vino->control = ctrl;
1926
1927 return 0;
1928 }
1929
1930 /* (execute only with vino_lock locked) */
vino_dma_start(struct vino_channel_settings * vcs)1931 static inline void vino_dma_start(struct vino_channel_settings *vcs)
1932 {
1933 u32 ctrl = vino->control;
1934
1935 dprintk("vino_dma_start():\n");
1936 ctrl |= (vcs->channel == VINO_CHANNEL_A) ?
1937 VINO_CTRL_A_DMA_ENBL : VINO_CTRL_B_DMA_ENBL;
1938 vino->control = ctrl;
1939 }
1940
1941 /* (execute only with vino_lock locked) */
vino_dma_stop(struct vino_channel_settings * vcs)1942 static inline void vino_dma_stop(struct vino_channel_settings *vcs)
1943 {
1944 u32 ctrl = vino->control;
1945
1946 ctrl &= (vcs->channel == VINO_CHANNEL_A) ?
1947 ~VINO_CTRL_A_DMA_ENBL : ~VINO_CTRL_B_DMA_ENBL;
1948 ctrl &= (vcs->channel == VINO_CHANNEL_A) ?
1949 ~VINO_CTRL_A_INT : ~VINO_CTRL_B_INT;
1950 vino->control = ctrl;
1951 dprintk("vino_dma_stop():\n");
1952 }
1953
1954 /*
1955 * Load dummy page to descriptor registers. This prevents generating of
1956 * spurious interrupts. (execute only with vino_lock locked)
1957 */
vino_clear_interrupt(struct vino_channel_settings * vcs)1958 static void vino_clear_interrupt(struct vino_channel_settings *vcs)
1959 {
1960 struct sgi_vino_channel *ch;
1961
1962 ch = (vcs->channel == VINO_CHANNEL_A) ? &vino->a : &vino->b;
1963
1964 ch->page_index = 0;
1965 ch->line_count = 0;
1966
1967 ch->start_desc_tbl = vino_drvdata->dummy_desc_table.dma;
1968 ch->next_4_desc = vino_drvdata->dummy_desc_table.dma;
1969
1970 udelay(VINO_DESC_FETCH_DELAY);
1971 dprintk("channel %c clear interrupt condition\n",
1972 (vcs->channel == VINO_CHANNEL_A) ? 'A':'B');
1973 }
1974
vino_capture(struct vino_channel_settings * vcs,struct vino_framebuffer * fb)1975 static int vino_capture(struct vino_channel_settings *vcs,
1976 struct vino_framebuffer *fb)
1977 {
1978 int err = 0;
1979 unsigned long flags, flags2;
1980
1981 spin_lock_irqsave(&fb->state_lock, flags);
1982
1983 if (fb->state == VINO_FRAMEBUFFER_IN_USE)
1984 err = -EBUSY;
1985 fb->state = VINO_FRAMEBUFFER_IN_USE;
1986
1987 spin_unlock_irqrestore(&fb->state_lock, flags);
1988
1989 if (err)
1990 return err;
1991
1992 spin_lock_irqsave(&vino_drvdata->vino_lock, flags);
1993 spin_lock_irqsave(&vino_drvdata->input_lock, flags2);
1994
1995 vino_dma_setup(vcs, fb);
1996 vino_dma_start(vcs);
1997
1998 spin_unlock_irqrestore(&vino_drvdata->input_lock, flags2);
1999 spin_unlock_irqrestore(&vino_drvdata->vino_lock, flags);
2000
2001 return err;
2002 }
2003
2004 static
vino_capture_enqueue(struct vino_channel_settings * vcs,unsigned int index)2005 struct vino_framebuffer *vino_capture_enqueue(struct
2006 vino_channel_settings *vcs,
2007 unsigned int index)
2008 {
2009 struct vino_framebuffer *fb;
2010 unsigned long flags;
2011
2012 dprintk("vino_capture_enqueue():\n");
2013
2014 spin_lock_irqsave(&vcs->capture_lock, flags);
2015
2016 fb = vino_queue_add(&vcs->fb_queue, index);
2017 if (fb == NULL) {
2018 dprintk("vino_capture_enqueue(): vino_queue_add() failed, "
2019 "queue full?\n");
2020 goto out;
2021 }
2022 out:
2023 spin_unlock_irqrestore(&vcs->capture_lock, flags);
2024
2025 return fb;
2026 }
2027
vino_capture_next(struct vino_channel_settings * vcs,int start)2028 static int vino_capture_next(struct vino_channel_settings *vcs, int start)
2029 {
2030 struct vino_framebuffer *fb;
2031 unsigned int incoming, id;
2032 int err = 0;
2033 unsigned long flags;
2034
2035 dprintk("vino_capture_next():\n");
2036
2037 spin_lock_irqsave(&vcs->capture_lock, flags);
2038
2039 if (start) {
2040 /* start capture only if capture isn't in progress already */
2041 if (vcs->capturing) {
2042 spin_unlock_irqrestore(&vcs->capture_lock, flags);
2043 return 0;
2044 }
2045
2046 } else {
2047 /* capture next frame:
2048 * stop capture if capturing is not set */
2049 if (!vcs->capturing) {
2050 spin_unlock_irqrestore(&vcs->capture_lock, flags);
2051 return 0;
2052 }
2053 }
2054
2055 err = vino_queue_get_incoming(&vcs->fb_queue, &incoming);
2056 if (err) {
2057 dprintk("vino_capture_next(): vino_queue_get_incoming() "
2058 "failed\n");
2059 err = -EINVAL;
2060 goto out;
2061 }
2062 if (incoming == 0) {
2063 dprintk("vino_capture_next(): no buffers available\n");
2064 goto out;
2065 }
2066
2067 fb = vino_queue_peek(&vcs->fb_queue, &id);
2068 if (fb == NULL) {
2069 dprintk("vino_capture_next(): vino_queue_peek() failed\n");
2070 err = -EINVAL;
2071 goto out;
2072 }
2073
2074 if (start) {
2075 vcs->capturing = 1;
2076 }
2077
2078 spin_unlock_irqrestore(&vcs->capture_lock, flags);
2079
2080 err = vino_capture(vcs, fb);
2081
2082 return err;
2083
2084 out:
2085 vcs->capturing = 0;
2086 spin_unlock_irqrestore(&vcs->capture_lock, flags);
2087
2088 return err;
2089 }
2090
vino_is_capturing(struct vino_channel_settings * vcs)2091 static inline int vino_is_capturing(struct vino_channel_settings *vcs)
2092 {
2093 int ret;
2094 unsigned long flags;
2095
2096 spin_lock_irqsave(&vcs->capture_lock, flags);
2097
2098 ret = vcs->capturing;
2099
2100 spin_unlock_irqrestore(&vcs->capture_lock, flags);
2101
2102 return ret;
2103 }
2104
2105 /* waits until a frame is captured */
vino_wait_for_frame(struct vino_channel_settings * vcs)2106 static int vino_wait_for_frame(struct vino_channel_settings *vcs)
2107 {
2108 wait_queue_t wait;
2109 int err = 0;
2110
2111 dprintk("vino_wait_for_frame():\n");
2112
2113 init_waitqueue_entry(&wait, current);
2114 /* add ourselves into wait queue */
2115 add_wait_queue(&vcs->fb_queue.frame_wait_queue, &wait);
2116
2117 /* to ensure that schedule_timeout will return immediately
2118 * if VINO interrupt was triggered meanwhile */
2119 schedule_timeout_interruptible(msecs_to_jiffies(100));
2120
2121 if (signal_pending(current))
2122 err = -EINTR;
2123
2124 remove_wait_queue(&vcs->fb_queue.frame_wait_queue, &wait);
2125
2126 dprintk("vino_wait_for_frame(): waiting for frame %s\n",
2127 err ? "failed" : "ok");
2128
2129 return err;
2130 }
2131
2132 /* the function assumes that PAGE_SIZE % 4 == 0 */
vino_convert_to_rgba(struct vino_framebuffer * fb)2133 static void vino_convert_to_rgba(struct vino_framebuffer *fb) {
2134 unsigned char *pageptr;
2135 unsigned int page, i;
2136 unsigned char a;
2137
2138 for (page = 0; page < fb->desc_table.page_count; page++) {
2139 pageptr = (unsigned char *)fb->desc_table.virtual[page];
2140
2141 for (i = 0; i < PAGE_SIZE; i += 4) {
2142 a = pageptr[0];
2143 pageptr[0] = pageptr[3];
2144 pageptr[1] = pageptr[2];
2145 pageptr[2] = pageptr[1];
2146 pageptr[3] = a;
2147 pageptr += 4;
2148 }
2149 }
2150 }
2151
2152 /* checks if the buffer is in correct state and syncs data */
vino_check_buffer(struct vino_channel_settings * vcs,struct vino_framebuffer * fb)2153 static int vino_check_buffer(struct vino_channel_settings *vcs,
2154 struct vino_framebuffer *fb)
2155 {
2156 int err = 0;
2157 unsigned long flags;
2158
2159 dprintk("vino_check_buffer():\n");
2160
2161 spin_lock_irqsave(&fb->state_lock, flags);
2162 switch (fb->state) {
2163 case VINO_FRAMEBUFFER_IN_USE:
2164 err = -EIO;
2165 break;
2166 case VINO_FRAMEBUFFER_READY:
2167 vino_sync_buffer(fb);
2168 fb->state = VINO_FRAMEBUFFER_UNUSED;
2169 break;
2170 default:
2171 err = -EINVAL;
2172 }
2173 spin_unlock_irqrestore(&fb->state_lock, flags);
2174
2175 if (!err) {
2176 if (vino_pixel_conversion
2177 && (fb->data_format == VINO_DATA_FMT_RGB32)) {
2178 vino_convert_to_rgba(fb);
2179 }
2180 } else if (err && (err != -EINVAL)) {
2181 dprintk("vino_check_buffer(): buffer not ready\n");
2182
2183 spin_lock_irqsave(&vino_drvdata->vino_lock, flags);
2184 vino_dma_stop(vcs);
2185 vino_clear_interrupt(vcs);
2186 spin_unlock_irqrestore(&vino_drvdata->vino_lock, flags);
2187 }
2188
2189 return err;
2190 }
2191
2192 /* forcefully terminates capture */
vino_capture_stop(struct vino_channel_settings * vcs)2193 static void vino_capture_stop(struct vino_channel_settings *vcs)
2194 {
2195 unsigned int incoming = 0, outgoing = 0, id;
2196 unsigned long flags, flags2;
2197
2198 dprintk("vino_capture_stop():\n");
2199
2200 spin_lock_irqsave(&vcs->capture_lock, flags);
2201
2202 /* unset capturing to stop queue processing */
2203 vcs->capturing = 0;
2204
2205 spin_lock_irqsave(&vino_drvdata->vino_lock, flags2);
2206
2207 vino_dma_stop(vcs);
2208 vino_clear_interrupt(vcs);
2209
2210 spin_unlock_irqrestore(&vino_drvdata->vino_lock, flags2);
2211
2212 /* remove all items from the queue */
2213 if (vino_queue_get_incoming(&vcs->fb_queue, &incoming)) {
2214 dprintk("vino_capture_stop(): "
2215 "vino_queue_get_incoming() failed\n");
2216 goto out;
2217 }
2218 while (incoming > 0) {
2219 vino_queue_transfer(&vcs->fb_queue);
2220
2221 if (vino_queue_get_incoming(&vcs->fb_queue, &incoming)) {
2222 dprintk("vino_capture_stop(): "
2223 "vino_queue_get_incoming() failed\n");
2224 goto out;
2225 }
2226 }
2227
2228 if (vino_queue_get_outgoing(&vcs->fb_queue, &outgoing)) {
2229 dprintk("vino_capture_stop(): "
2230 "vino_queue_get_outgoing() failed\n");
2231 goto out;
2232 }
2233 while (outgoing > 0) {
2234 vino_queue_remove(&vcs->fb_queue, &id);
2235
2236 if (vino_queue_get_outgoing(&vcs->fb_queue, &outgoing)) {
2237 dprintk("vino_capture_stop(): "
2238 "vino_queue_get_outgoing() failed\n");
2239 goto out;
2240 }
2241 }
2242
2243 out:
2244 spin_unlock_irqrestore(&vcs->capture_lock, flags);
2245 }
2246
2247 #if 0
2248 static int vino_capture_failed(struct vino_channel_settings *vcs)
2249 {
2250 struct vino_framebuffer *fb;
2251 unsigned long flags;
2252 unsigned int i;
2253 int ret;
2254
2255 dprintk("vino_capture_failed():\n");
2256
2257 spin_lock_irqsave(&vino_drvdata->vino_lock, flags);
2258
2259 vino_dma_stop(vcs);
2260 vino_clear_interrupt(vcs);
2261
2262 spin_unlock_irqrestore(&vino_drvdata->vino_lock, flags);
2263
2264 ret = vino_queue_get_incoming(&vcs->fb_queue, &i);
2265 if (ret == VINO_QUEUE_ERROR) {
2266 dprintk("vino_queue_get_incoming() failed\n");
2267 return -EINVAL;
2268 }
2269 if (i == 0) {
2270 /* no buffers to process */
2271 return 0;
2272 }
2273
2274 fb = vino_queue_peek(&vcs->fb_queue, &i);
2275 if (fb == NULL) {
2276 dprintk("vino_queue_peek() failed\n");
2277 return -EINVAL;
2278 }
2279
2280 spin_lock_irqsave(&fb->state_lock, flags);
2281 if (fb->state == VINO_FRAMEBUFFER_IN_USE) {
2282 fb->state = VINO_FRAMEBUFFER_UNUSED;
2283 vino_queue_transfer(&vcs->fb_queue);
2284 vino_queue_remove(&vcs->fb_queue, &i);
2285 /* we should actually discard the newest frame,
2286 * but who cares ... */
2287 }
2288 spin_unlock_irqrestore(&fb->state_lock, flags);
2289
2290 return 0;
2291 }
2292 #endif
2293
vino_skip_frame(struct vino_channel_settings * vcs)2294 static void vino_skip_frame(struct vino_channel_settings *vcs)
2295 {
2296 struct vino_framebuffer *fb;
2297 unsigned long flags;
2298 unsigned int id;
2299
2300 spin_lock_irqsave(&vcs->capture_lock, flags);
2301 fb = vino_queue_peek(&vcs->fb_queue, &id);
2302 if (!fb) {
2303 spin_unlock_irqrestore(&vcs->capture_lock, flags);
2304 dprintk("vino_skip_frame(): vino_queue_peek() failed!\n");
2305 return;
2306 }
2307 spin_unlock_irqrestore(&vcs->capture_lock, flags);
2308
2309 spin_lock_irqsave(&fb->state_lock, flags);
2310 fb->state = VINO_FRAMEBUFFER_UNUSED;
2311 spin_unlock_irqrestore(&fb->state_lock, flags);
2312
2313 vino_capture_next(vcs, 0);
2314 }
2315
vino_frame_done(struct vino_channel_settings * vcs)2316 static void vino_frame_done(struct vino_channel_settings *vcs)
2317 {
2318 struct vino_framebuffer *fb;
2319 unsigned long flags;
2320
2321 spin_lock_irqsave(&vcs->capture_lock, flags);
2322 fb = vino_queue_transfer(&vcs->fb_queue);
2323 if (!fb) {
2324 spin_unlock_irqrestore(&vcs->capture_lock, flags);
2325 dprintk("vino_frame_done(): vino_queue_transfer() failed!\n");
2326 return;
2327 }
2328 spin_unlock_irqrestore(&vcs->capture_lock, flags);
2329
2330 fb->frame_counter = vcs->int_data.frame_counter;
2331 memcpy(&fb->timestamp, &vcs->int_data.timestamp,
2332 sizeof(struct timeval));
2333
2334 spin_lock_irqsave(&fb->state_lock, flags);
2335 if (fb->state == VINO_FRAMEBUFFER_IN_USE)
2336 fb->state = VINO_FRAMEBUFFER_READY;
2337 spin_unlock_irqrestore(&fb->state_lock, flags);
2338
2339 wake_up(&vcs->fb_queue.frame_wait_queue);
2340
2341 vino_capture_next(vcs, 0);
2342 }
2343
vino_capture_tasklet(unsigned long channel)2344 static void vino_capture_tasklet(unsigned long channel) {
2345 struct vino_channel_settings *vcs;
2346
2347 vcs = (channel == VINO_CHANNEL_A)
2348 ? &vino_drvdata->a : &vino_drvdata->b;
2349
2350 if (vcs->int_data.skip)
2351 vcs->int_data.skip_count++;
2352
2353 if (vcs->int_data.skip && (vcs->int_data.skip_count
2354 <= VINO_MAX_FRAME_SKIP_COUNT)) {
2355 vino_skip_frame(vcs);
2356 } else {
2357 vcs->int_data.skip_count = 0;
2358 vino_frame_done(vcs);
2359 }
2360 }
2361
vino_interrupt(int irq,void * dev_id)2362 static irqreturn_t vino_interrupt(int irq, void *dev_id)
2363 {
2364 u32 ctrl, intr;
2365 unsigned int fc_a, fc_b;
2366 int handled_a = 0, skip_a = 0, done_a = 0;
2367 int handled_b = 0, skip_b = 0, done_b = 0;
2368
2369 #ifdef VINO_DEBUG_INT
2370 int loop = 0;
2371 unsigned int line_count = vino->a.line_count,
2372 page_index = vino->a.page_index,
2373 field_counter = vino->a.field_counter,
2374 start_desc_tbl = vino->a.start_desc_tbl,
2375 next_4_desc = vino->a.next_4_desc;
2376 unsigned int line_count_2,
2377 page_index_2,
2378 field_counter_2,
2379 start_desc_tbl_2,
2380 next_4_desc_2;
2381 #endif
2382
2383 spin_lock(&vino_drvdata->vino_lock);
2384
2385 while ((intr = vino->intr_status)) {
2386 fc_a = vino->a.field_counter >> 1;
2387 fc_b = vino->b.field_counter >> 1;
2388
2389 /* handle error-interrupts in some special way ?
2390 * --> skips frames */
2391 if (intr & VINO_INTSTAT_A) {
2392 if (intr & VINO_INTSTAT_A_EOF) {
2393 vino_drvdata->a.field++;
2394 if (vino_drvdata->a.field > 1) {
2395 vino_dma_stop(&vino_drvdata->a);
2396 vino_clear_interrupt(&vino_drvdata->a);
2397 vino_drvdata->a.field = 0;
2398 done_a = 1;
2399 } else {
2400 if (vino->a.page_index
2401 != vino_drvdata->a.line_size) {
2402 vino->a.line_count = 0;
2403 vino->a.page_index =
2404 vino_drvdata->
2405 a.line_size;
2406 vino->a.next_4_desc =
2407 vino->a.start_desc_tbl;
2408 }
2409 }
2410 dprintk("channel A end-of-field "
2411 "interrupt: %04x\n", intr);
2412 } else {
2413 vino_dma_stop(&vino_drvdata->a);
2414 vino_clear_interrupt(&vino_drvdata->a);
2415 vino_drvdata->a.field = 0;
2416 skip_a = 1;
2417 dprintk("channel A error interrupt: %04x\n",
2418 intr);
2419 }
2420
2421 #ifdef VINO_DEBUG_INT
2422 line_count_2 = vino->a.line_count;
2423 page_index_2 = vino->a.page_index;
2424 field_counter_2 = vino->a.field_counter;
2425 start_desc_tbl_2 = vino->a.start_desc_tbl;
2426 next_4_desc_2 = vino->a.next_4_desc;
2427
2428 printk("intr = %04x, loop = %d, field = %d\n",
2429 intr, loop, vino_drvdata->a.field);
2430 printk("1- line count = %04d, page index = %04d, "
2431 "start = %08x, next = %08x\n"
2432 " fieldc = %d, framec = %d\n",
2433 line_count, page_index, start_desc_tbl,
2434 next_4_desc, field_counter, fc_a);
2435 printk("12-line count = %04d, page index = %04d, "
2436 " start = %08x, next = %08x\n",
2437 line_count_2, page_index_2, start_desc_tbl_2,
2438 next_4_desc_2);
2439
2440 if (done_a)
2441 printk("\n");
2442 #endif
2443 }
2444
2445 if (intr & VINO_INTSTAT_B) {
2446 if (intr & VINO_INTSTAT_B_EOF) {
2447 vino_drvdata->b.field++;
2448 if (vino_drvdata->b.field > 1) {
2449 vino_dma_stop(&vino_drvdata->b);
2450 vino_clear_interrupt(&vino_drvdata->b);
2451 vino_drvdata->b.field = 0;
2452 done_b = 1;
2453 }
2454 dprintk("channel B end-of-field "
2455 "interrupt: %04x\n", intr);
2456 } else {
2457 vino_dma_stop(&vino_drvdata->b);
2458 vino_clear_interrupt(&vino_drvdata->b);
2459 vino_drvdata->b.field = 0;
2460 skip_b = 1;
2461 dprintk("channel B error interrupt: %04x\n",
2462 intr);
2463 }
2464 }
2465
2466 /* Always remember to clear interrupt status.
2467 * Disable VINO interrupts while we do this. */
2468 ctrl = vino->control;
2469 vino->control = ctrl & ~(VINO_CTRL_A_INT | VINO_CTRL_B_INT);
2470 vino->intr_status = ~intr;
2471 vino->control = ctrl;
2472
2473 spin_unlock(&vino_drvdata->vino_lock);
2474
2475 if ((!handled_a) && (done_a || skip_a)) {
2476 if (!skip_a) {
2477 v4l2_get_timestamp(
2478 &vino_drvdata->a.int_data.timestamp);
2479 vino_drvdata->a.int_data.frame_counter = fc_a;
2480 }
2481 vino_drvdata->a.int_data.skip = skip_a;
2482
2483 dprintk("channel A %s, interrupt: %d\n",
2484 skip_a ? "skipping frame" : "frame done",
2485 intr);
2486 tasklet_hi_schedule(&vino_tasklet_a);
2487 handled_a = 1;
2488 }
2489
2490 if ((!handled_b) && (done_b || skip_b)) {
2491 if (!skip_b) {
2492 v4l2_get_timestamp(
2493 &vino_drvdata->b.int_data.timestamp);
2494 vino_drvdata->b.int_data.frame_counter = fc_b;
2495 }
2496 vino_drvdata->b.int_data.skip = skip_b;
2497
2498 dprintk("channel B %s, interrupt: %d\n",
2499 skip_b ? "skipping frame" : "frame done",
2500 intr);
2501 tasklet_hi_schedule(&vino_tasklet_b);
2502 handled_b = 1;
2503 }
2504
2505 #ifdef VINO_DEBUG_INT
2506 loop++;
2507 #endif
2508 spin_lock(&vino_drvdata->vino_lock);
2509 }
2510
2511 spin_unlock(&vino_drvdata->vino_lock);
2512
2513 return IRQ_HANDLED;
2514 }
2515
2516 /* VINO video input management */
2517
vino_get_saa7191_input(int input)2518 static int vino_get_saa7191_input(int input)
2519 {
2520 switch (input) {
2521 case VINO_INPUT_COMPOSITE:
2522 return SAA7191_INPUT_COMPOSITE;
2523 case VINO_INPUT_SVIDEO:
2524 return SAA7191_INPUT_SVIDEO;
2525 default:
2526 printk(KERN_ERR "VINO: vino_get_saa7191_input(): "
2527 "invalid input!\n");
2528 return -1;
2529 }
2530 }
2531
2532 /* execute with input_lock locked */
vino_is_input_owner(struct vino_channel_settings * vcs)2533 static int vino_is_input_owner(struct vino_channel_settings *vcs)
2534 {
2535 switch(vcs->input) {
2536 case VINO_INPUT_COMPOSITE:
2537 case VINO_INPUT_SVIDEO:
2538 return vino_drvdata->decoder_owner == vcs->channel;
2539 case VINO_INPUT_D1:
2540 return vino_drvdata->camera_owner == vcs->channel;
2541 default:
2542 return 0;
2543 }
2544 }
2545
vino_acquire_input(struct vino_channel_settings * vcs)2546 static int vino_acquire_input(struct vino_channel_settings *vcs)
2547 {
2548 unsigned long flags;
2549 int ret = 0;
2550
2551 dprintk("vino_acquire_input():\n");
2552
2553 spin_lock_irqsave(&vino_drvdata->input_lock, flags);
2554
2555 /* First try D1 and then SAA7191 */
2556 if (vino_drvdata->camera
2557 && (vino_drvdata->camera_owner == VINO_NO_CHANNEL)) {
2558 vino_drvdata->camera_owner = vcs->channel;
2559 vcs->input = VINO_INPUT_D1;
2560 vcs->data_norm = VINO_DATA_NORM_D1;
2561 } else if (vino_drvdata->decoder
2562 && (vino_drvdata->decoder_owner == VINO_NO_CHANNEL)) {
2563 int input;
2564 int data_norm = 0;
2565 v4l2_std_id norm;
2566
2567 input = VINO_INPUT_COMPOSITE;
2568
2569 ret = decoder_call(video, s_routing,
2570 vino_get_saa7191_input(input), 0, 0);
2571 if (ret) {
2572 ret = -EINVAL;
2573 goto out;
2574 }
2575
2576 spin_unlock_irqrestore(&vino_drvdata->input_lock, flags);
2577
2578 /* Don't hold spinlocks while auto-detecting norm
2579 * as it may take a while... */
2580
2581 ret = decoder_call(video, querystd, &norm);
2582 if (!ret) {
2583 for (data_norm = 0; data_norm < 3; data_norm++) {
2584 if (vino_data_norms[data_norm].std & norm)
2585 break;
2586 }
2587 if (data_norm == 3)
2588 data_norm = VINO_DATA_NORM_PAL;
2589 ret = decoder_call(core, s_std, norm);
2590 }
2591
2592 spin_lock_irqsave(&vino_drvdata->input_lock, flags);
2593
2594 if (ret) {
2595 ret = -EINVAL;
2596 goto out;
2597 }
2598
2599 vino_drvdata->decoder_owner = vcs->channel;
2600
2601 vcs->input = input;
2602 vcs->data_norm = data_norm;
2603 } else {
2604 vcs->input = (vcs->channel == VINO_CHANNEL_A) ?
2605 vino_drvdata->b.input : vino_drvdata->a.input;
2606 vcs->data_norm = (vcs->channel == VINO_CHANNEL_A) ?
2607 vino_drvdata->b.data_norm : vino_drvdata->a.data_norm;
2608 }
2609
2610 if (vcs->input == VINO_INPUT_NONE) {
2611 ret = -ENODEV;
2612 goto out;
2613 }
2614
2615 vino_set_default_clipping(vcs);
2616 vino_set_default_scaling(vcs);
2617 vino_set_default_framerate(vcs);
2618
2619 dprintk("vino_acquire_input(): %s\n", vino_inputs[vcs->input].name);
2620
2621 out:
2622 spin_unlock_irqrestore(&vino_drvdata->input_lock, flags);
2623
2624 return ret;
2625 }
2626
vino_set_input(struct vino_channel_settings * vcs,int input)2627 static int vino_set_input(struct vino_channel_settings *vcs, int input)
2628 {
2629 struct vino_channel_settings *vcs2 = (vcs->channel == VINO_CHANNEL_A) ?
2630 &vino_drvdata->b : &vino_drvdata->a;
2631 unsigned long flags;
2632 int ret = 0;
2633
2634 dprintk("vino_set_input():\n");
2635
2636 spin_lock_irqsave(&vino_drvdata->input_lock, flags);
2637
2638 if (vcs->input == input)
2639 goto out;
2640
2641 switch (input) {
2642 case VINO_INPUT_COMPOSITE:
2643 case VINO_INPUT_SVIDEO:
2644 if (!vino_drvdata->decoder) {
2645 ret = -EINVAL;
2646 goto out;
2647 }
2648
2649 if (vino_drvdata->decoder_owner == VINO_NO_CHANNEL) {
2650 vino_drvdata->decoder_owner = vcs->channel;
2651 }
2652
2653 if (vino_drvdata->decoder_owner == vcs->channel) {
2654 int data_norm = 0;
2655 v4l2_std_id norm;
2656
2657 ret = decoder_call(video, s_routing,
2658 vino_get_saa7191_input(input), 0, 0);
2659 if (ret) {
2660 vino_drvdata->decoder_owner = VINO_NO_CHANNEL;
2661 ret = -EINVAL;
2662 goto out;
2663 }
2664
2665 spin_unlock_irqrestore(&vino_drvdata->input_lock, flags);
2666
2667 /* Don't hold spinlocks while auto-detecting norm
2668 * as it may take a while... */
2669
2670 ret = decoder_call(video, querystd, &norm);
2671 if (!ret) {
2672 for (data_norm = 0; data_norm < 3; data_norm++) {
2673 if (vino_data_norms[data_norm].std & norm)
2674 break;
2675 }
2676 if (data_norm == 3)
2677 data_norm = VINO_DATA_NORM_PAL;
2678 ret = decoder_call(core, s_std, norm);
2679 }
2680
2681 spin_lock_irqsave(&vino_drvdata->input_lock, flags);
2682
2683 if (ret) {
2684 vino_drvdata->decoder_owner = VINO_NO_CHANNEL;
2685 ret = -EINVAL;
2686 goto out;
2687 }
2688
2689 vcs->input = input;
2690 vcs->data_norm = data_norm;
2691 } else {
2692 if (input != vcs2->input) {
2693 ret = -EBUSY;
2694 goto out;
2695 }
2696
2697 vcs->input = input;
2698 vcs->data_norm = vcs2->data_norm;
2699 }
2700
2701 if (vino_drvdata->camera_owner == vcs->channel) {
2702 /* Transfer the ownership or release the input */
2703 if (vcs2->input == VINO_INPUT_D1) {
2704 vino_drvdata->camera_owner = vcs2->channel;
2705 } else {
2706 vino_drvdata->camera_owner = VINO_NO_CHANNEL;
2707 }
2708 }
2709 break;
2710 case VINO_INPUT_D1:
2711 if (!vino_drvdata->camera) {
2712 ret = -EINVAL;
2713 goto out;
2714 }
2715
2716 if (vino_drvdata->camera_owner == VINO_NO_CHANNEL)
2717 vino_drvdata->camera_owner = vcs->channel;
2718
2719 if (vino_drvdata->decoder_owner == vcs->channel) {
2720 /* Transfer the ownership or release the input */
2721 if ((vcs2->input == VINO_INPUT_COMPOSITE) ||
2722 (vcs2->input == VINO_INPUT_SVIDEO)) {
2723 vino_drvdata->decoder_owner = vcs2->channel;
2724 } else {
2725 vino_drvdata->decoder_owner = VINO_NO_CHANNEL;
2726 }
2727 }
2728
2729 vcs->input = input;
2730 vcs->data_norm = VINO_DATA_NORM_D1;
2731 break;
2732 default:
2733 ret = -EINVAL;
2734 goto out;
2735 }
2736
2737 vino_set_default_clipping(vcs);
2738 vino_set_default_scaling(vcs);
2739 vino_set_default_framerate(vcs);
2740
2741 dprintk("vino_set_input(): %s\n", vino_inputs[vcs->input].name);
2742
2743 out:
2744 spin_unlock_irqrestore(&vino_drvdata->input_lock, flags);
2745
2746 return ret;
2747 }
2748
vino_release_input(struct vino_channel_settings * vcs)2749 static void vino_release_input(struct vino_channel_settings *vcs)
2750 {
2751 struct vino_channel_settings *vcs2 = (vcs->channel == VINO_CHANNEL_A) ?
2752 &vino_drvdata->b : &vino_drvdata->a;
2753 unsigned long flags;
2754
2755 dprintk("vino_release_input():\n");
2756
2757 spin_lock_irqsave(&vino_drvdata->input_lock, flags);
2758
2759 /* Release ownership of the channel
2760 * and if the other channel takes input from
2761 * the same source, transfer the ownership */
2762 if (vino_drvdata->camera_owner == vcs->channel) {
2763 if (vcs2->input == VINO_INPUT_D1) {
2764 vino_drvdata->camera_owner = vcs2->channel;
2765 } else {
2766 vino_drvdata->camera_owner = VINO_NO_CHANNEL;
2767 }
2768 } else if (vino_drvdata->decoder_owner == vcs->channel) {
2769 if ((vcs2->input == VINO_INPUT_COMPOSITE) ||
2770 (vcs2->input == VINO_INPUT_SVIDEO)) {
2771 vino_drvdata->decoder_owner = vcs2->channel;
2772 } else {
2773 vino_drvdata->decoder_owner = VINO_NO_CHANNEL;
2774 }
2775 }
2776 vcs->input = VINO_INPUT_NONE;
2777
2778 spin_unlock_irqrestore(&vino_drvdata->input_lock, flags);
2779 }
2780
2781 /* execute with input_lock locked */
vino_set_data_norm(struct vino_channel_settings * vcs,unsigned int data_norm,unsigned long * flags)2782 static int vino_set_data_norm(struct vino_channel_settings *vcs,
2783 unsigned int data_norm,
2784 unsigned long *flags)
2785 {
2786 int err = 0;
2787
2788 if (data_norm == vcs->data_norm)
2789 return 0;
2790
2791 switch (vcs->input) {
2792 case VINO_INPUT_D1:
2793 /* only one "norm" supported */
2794 if (data_norm != VINO_DATA_NORM_D1)
2795 return -EINVAL;
2796 break;
2797 case VINO_INPUT_COMPOSITE:
2798 case VINO_INPUT_SVIDEO: {
2799 v4l2_std_id norm;
2800
2801 if ((data_norm != VINO_DATA_NORM_PAL)
2802 && (data_norm != VINO_DATA_NORM_NTSC)
2803 && (data_norm != VINO_DATA_NORM_SECAM))
2804 return -EINVAL;
2805
2806 spin_unlock_irqrestore(&vino_drvdata->input_lock, *flags);
2807
2808 /* Don't hold spinlocks while setting norm
2809 * as it may take a while... */
2810
2811 norm = vino_data_norms[data_norm].std;
2812 err = decoder_call(core, s_std, norm);
2813
2814 spin_lock_irqsave(&vino_drvdata->input_lock, *flags);
2815
2816 if (err)
2817 goto out;
2818
2819 vcs->data_norm = data_norm;
2820
2821 vino_set_default_clipping(vcs);
2822 vino_set_default_scaling(vcs);
2823 vino_set_default_framerate(vcs);
2824 break;
2825 }
2826 default:
2827 return -EINVAL;
2828 }
2829
2830 out:
2831 return err;
2832 }
2833
2834 /* V4L2 helper functions */
2835
vino_find_data_format(__u32 pixelformat)2836 static int vino_find_data_format(__u32 pixelformat)
2837 {
2838 int i;
2839
2840 for (i = 0; i < VINO_DATA_FMT_COUNT; i++) {
2841 if (vino_data_formats[i].pixelformat == pixelformat)
2842 return i;
2843 }
2844
2845 return VINO_DATA_FMT_NONE;
2846 }
2847
vino_int_enum_input(struct vino_channel_settings * vcs,__u32 index)2848 static int vino_int_enum_input(struct vino_channel_settings *vcs, __u32 index)
2849 {
2850 int input = VINO_INPUT_NONE;
2851 unsigned long flags;
2852
2853 spin_lock_irqsave(&vino_drvdata->input_lock, flags);
2854 if (vino_drvdata->decoder && vino_drvdata->camera) {
2855 switch (index) {
2856 case 0:
2857 input = VINO_INPUT_COMPOSITE;
2858 break;
2859 case 1:
2860 input = VINO_INPUT_SVIDEO;
2861 break;
2862 case 2:
2863 input = VINO_INPUT_D1;
2864 break;
2865 }
2866 } else if (vino_drvdata->decoder) {
2867 switch (index) {
2868 case 0:
2869 input = VINO_INPUT_COMPOSITE;
2870 break;
2871 case 1:
2872 input = VINO_INPUT_SVIDEO;
2873 break;
2874 }
2875 } else if (vino_drvdata->camera) {
2876 switch (index) {
2877 case 0:
2878 input = VINO_INPUT_D1;
2879 break;
2880 }
2881 }
2882 spin_unlock_irqrestore(&vino_drvdata->input_lock, flags);
2883
2884 return input;
2885 }
2886
2887 /* execute with input_lock locked */
vino_find_input_index(struct vino_channel_settings * vcs)2888 static __u32 vino_find_input_index(struct vino_channel_settings *vcs)
2889 {
2890 __u32 index = 0;
2891 // FIXME: detect when no inputs available
2892
2893 if (vino_drvdata->decoder && vino_drvdata->camera) {
2894 switch (vcs->input) {
2895 case VINO_INPUT_COMPOSITE:
2896 index = 0;
2897 break;
2898 case VINO_INPUT_SVIDEO:
2899 index = 1;
2900 break;
2901 case VINO_INPUT_D1:
2902 index = 2;
2903 break;
2904 }
2905 } else if (vino_drvdata->decoder) {
2906 switch (vcs->input) {
2907 case VINO_INPUT_COMPOSITE:
2908 index = 0;
2909 break;
2910 case VINO_INPUT_SVIDEO:
2911 index = 1;
2912 break;
2913 }
2914 } else if (vino_drvdata->camera) {
2915 switch (vcs->input) {
2916 case VINO_INPUT_D1:
2917 index = 0;
2918 break;
2919 }
2920 }
2921
2922 return index;
2923 }
2924
2925 /* V4L2 ioctls */
2926
vino_querycap(struct file * file,void * __fh,struct v4l2_capability * cap)2927 static int vino_querycap(struct file *file, void *__fh,
2928 struct v4l2_capability *cap)
2929 {
2930 memset(cap, 0, sizeof(struct v4l2_capability));
2931
2932 strcpy(cap->driver, vino_driver_name);
2933 strcpy(cap->card, vino_driver_description);
2934 strcpy(cap->bus_info, vino_bus_name);
2935 cap->capabilities =
2936 V4L2_CAP_VIDEO_CAPTURE |
2937 V4L2_CAP_STREAMING;
2938 // V4L2_CAP_OVERLAY, V4L2_CAP_READWRITE
2939 return 0;
2940 }
2941
vino_enum_input(struct file * file,void * __fh,struct v4l2_input * i)2942 static int vino_enum_input(struct file *file, void *__fh,
2943 struct v4l2_input *i)
2944 {
2945 struct vino_channel_settings *vcs = video_drvdata(file);
2946 __u32 index = i->index;
2947 int input;
2948 dprintk("requested index = %d\n", index);
2949
2950 input = vino_int_enum_input(vcs, index);
2951 if (input == VINO_INPUT_NONE)
2952 return -EINVAL;
2953
2954 i->type = V4L2_INPUT_TYPE_CAMERA;
2955 i->std = vino_inputs[input].std;
2956 strcpy(i->name, vino_inputs[input].name);
2957
2958 if (input == VINO_INPUT_COMPOSITE || input == VINO_INPUT_SVIDEO)
2959 decoder_call(video, g_input_status, &i->status);
2960 return 0;
2961 }
2962
vino_g_input(struct file * file,void * __fh,unsigned int * i)2963 static int vino_g_input(struct file *file, void *__fh,
2964 unsigned int *i)
2965 {
2966 struct vino_channel_settings *vcs = video_drvdata(file);
2967 __u32 index;
2968 int input;
2969 unsigned long flags;
2970
2971 spin_lock_irqsave(&vino_drvdata->input_lock, flags);
2972 input = vcs->input;
2973 index = vino_find_input_index(vcs);
2974 spin_unlock_irqrestore(&vino_drvdata->input_lock, flags);
2975
2976 dprintk("input = %d\n", input);
2977
2978 if (input == VINO_INPUT_NONE) {
2979 return -EINVAL;
2980 }
2981
2982 *i = index;
2983
2984 return 0;
2985 }
2986
vino_s_input(struct file * file,void * __fh,unsigned int i)2987 static int vino_s_input(struct file *file, void *__fh,
2988 unsigned int i)
2989 {
2990 struct vino_channel_settings *vcs = video_drvdata(file);
2991 int input;
2992 dprintk("requested input = %d\n", i);
2993
2994 input = vino_int_enum_input(vcs, i);
2995 if (input == VINO_INPUT_NONE)
2996 return -EINVAL;
2997
2998 return vino_set_input(vcs, input);
2999 }
3000
vino_querystd(struct file * file,void * __fh,v4l2_std_id * std)3001 static int vino_querystd(struct file *file, void *__fh,
3002 v4l2_std_id *std)
3003 {
3004 struct vino_channel_settings *vcs = video_drvdata(file);
3005 unsigned long flags;
3006 int err = 0;
3007
3008 spin_lock_irqsave(&vino_drvdata->input_lock, flags);
3009
3010 switch (vcs->input) {
3011 case VINO_INPUT_D1:
3012 *std = vino_inputs[vcs->input].std;
3013 break;
3014 case VINO_INPUT_COMPOSITE:
3015 case VINO_INPUT_SVIDEO: {
3016 decoder_call(video, querystd, std);
3017 break;
3018 }
3019 default:
3020 err = -EINVAL;
3021 }
3022
3023 spin_unlock_irqrestore(&vino_drvdata->input_lock, flags);
3024
3025 return err;
3026 }
3027
vino_g_std(struct file * file,void * __fh,v4l2_std_id * std)3028 static int vino_g_std(struct file *file, void *__fh,
3029 v4l2_std_id *std)
3030 {
3031 struct vino_channel_settings *vcs = video_drvdata(file);
3032 unsigned long flags;
3033
3034 spin_lock_irqsave(&vino_drvdata->input_lock, flags);
3035
3036 *std = vino_data_norms[vcs->data_norm].std;
3037 dprintk("current standard = %d\n", vcs->data_norm);
3038
3039 spin_unlock_irqrestore(&vino_drvdata->input_lock, flags);
3040
3041 return 0;
3042 }
3043
vino_s_std(struct file * file,void * __fh,v4l2_std_id std)3044 static int vino_s_std(struct file *file, void *__fh,
3045 v4l2_std_id std)
3046 {
3047 struct vino_channel_settings *vcs = video_drvdata(file);
3048 unsigned long flags;
3049 int ret = 0;
3050
3051 spin_lock_irqsave(&vino_drvdata->input_lock, flags);
3052
3053 if (!vino_is_input_owner(vcs)) {
3054 ret = -EBUSY;
3055 goto out;
3056 }
3057
3058 /* check if the standard is valid for the current input */
3059 if (std & vino_inputs[vcs->input].std) {
3060 dprintk("standard accepted\n");
3061
3062 /* change the video norm for SAA7191
3063 * and accept NTSC for D1 (do nothing) */
3064
3065 if (vcs->input == VINO_INPUT_D1)
3066 goto out;
3067
3068 if (std & V4L2_STD_PAL) {
3069 ret = vino_set_data_norm(vcs, VINO_DATA_NORM_PAL,
3070 &flags);
3071 } else if (std & V4L2_STD_NTSC) {
3072 ret = vino_set_data_norm(vcs, VINO_DATA_NORM_NTSC,
3073 &flags);
3074 } else if (std & V4L2_STD_SECAM) {
3075 ret = vino_set_data_norm(vcs, VINO_DATA_NORM_SECAM,
3076 &flags);
3077 } else {
3078 ret = -EINVAL;
3079 }
3080
3081 if (ret) {
3082 ret = -EINVAL;
3083 }
3084 } else {
3085 ret = -EINVAL;
3086 }
3087
3088 out:
3089 spin_unlock_irqrestore(&vino_drvdata->input_lock, flags);
3090
3091 return ret;
3092 }
3093
vino_enum_fmt_vid_cap(struct file * file,void * __fh,struct v4l2_fmtdesc * fd)3094 static int vino_enum_fmt_vid_cap(struct file *file, void *__fh,
3095 struct v4l2_fmtdesc *fd)
3096 {
3097 dprintk("format index = %d\n", fd->index);
3098
3099 if (fd->index >= VINO_DATA_FMT_COUNT)
3100 return -EINVAL;
3101 dprintk("format name = %s\n", vino_data_formats[fd->index].description);
3102
3103 fd->pixelformat = vino_data_formats[fd->index].pixelformat;
3104 strcpy(fd->description, vino_data_formats[fd->index].description);
3105 return 0;
3106 }
3107
vino_try_fmt_vid_cap(struct file * file,void * __fh,struct v4l2_format * f)3108 static int vino_try_fmt_vid_cap(struct file *file, void *__fh,
3109 struct v4l2_format *f)
3110 {
3111 struct vino_channel_settings *vcs = video_drvdata(file);
3112 struct vino_channel_settings tempvcs;
3113 unsigned long flags;
3114 struct v4l2_pix_format *pf = &f->fmt.pix;
3115
3116 dprintk("requested: w = %d, h = %d\n",
3117 pf->width, pf->height);
3118
3119 spin_lock_irqsave(&vino_drvdata->input_lock, flags);
3120 memcpy(&tempvcs, vcs, sizeof(struct vino_channel_settings));
3121 spin_unlock_irqrestore(&vino_drvdata->input_lock, flags);
3122
3123 tempvcs.data_format = vino_find_data_format(pf->pixelformat);
3124 if (tempvcs.data_format == VINO_DATA_FMT_NONE) {
3125 tempvcs.data_format = VINO_DATA_FMT_GREY;
3126 pf->pixelformat =
3127 vino_data_formats[tempvcs.data_format].
3128 pixelformat;
3129 }
3130
3131 /* data format must be set before clipping/scaling */
3132 vino_set_scaling(&tempvcs, pf->width, pf->height);
3133
3134 dprintk("data format = %s\n",
3135 vino_data_formats[tempvcs.data_format].description);
3136
3137 pf->width = (tempvcs.clipping.right - tempvcs.clipping.left) /
3138 tempvcs.decimation;
3139 pf->height = (tempvcs.clipping.bottom - tempvcs.clipping.top) /
3140 tempvcs.decimation;
3141
3142 pf->field = V4L2_FIELD_INTERLACED;
3143 pf->bytesperline = tempvcs.line_size;
3144 pf->sizeimage = tempvcs.line_size *
3145 (tempvcs.clipping.bottom - tempvcs.clipping.top) /
3146 tempvcs.decimation;
3147 pf->colorspace =
3148 vino_data_formats[tempvcs.data_format].colorspace;
3149
3150 pf->priv = 0;
3151 return 0;
3152 }
3153
vino_g_fmt_vid_cap(struct file * file,void * __fh,struct v4l2_format * f)3154 static int vino_g_fmt_vid_cap(struct file *file, void *__fh,
3155 struct v4l2_format *f)
3156 {
3157 struct vino_channel_settings *vcs = video_drvdata(file);
3158 unsigned long flags;
3159 struct v4l2_pix_format *pf = &f->fmt.pix;
3160
3161 spin_lock_irqsave(&vino_drvdata->input_lock, flags);
3162
3163 pf->width = (vcs->clipping.right - vcs->clipping.left) /
3164 vcs->decimation;
3165 pf->height = (vcs->clipping.bottom - vcs->clipping.top) /
3166 vcs->decimation;
3167 pf->pixelformat =
3168 vino_data_formats[vcs->data_format].pixelformat;
3169
3170 pf->field = V4L2_FIELD_INTERLACED;
3171 pf->bytesperline = vcs->line_size;
3172 pf->sizeimage = vcs->line_size *
3173 (vcs->clipping.bottom - vcs->clipping.top) /
3174 vcs->decimation;
3175 pf->colorspace =
3176 vino_data_formats[vcs->data_format].colorspace;
3177
3178 pf->priv = 0;
3179
3180 spin_unlock_irqrestore(&vino_drvdata->input_lock, flags);
3181 return 0;
3182 }
3183
vino_s_fmt_vid_cap(struct file * file,void * __fh,struct v4l2_format * f)3184 static int vino_s_fmt_vid_cap(struct file *file, void *__fh,
3185 struct v4l2_format *f)
3186 {
3187 struct vino_channel_settings *vcs = video_drvdata(file);
3188 int data_format;
3189 unsigned long flags;
3190 struct v4l2_pix_format *pf = &f->fmt.pix;
3191
3192 spin_lock_irqsave(&vino_drvdata->input_lock, flags);
3193
3194 data_format = vino_find_data_format(pf->pixelformat);
3195
3196 if (data_format == VINO_DATA_FMT_NONE) {
3197 vcs->data_format = VINO_DATA_FMT_GREY;
3198 pf->pixelformat =
3199 vino_data_formats[vcs->data_format].
3200 pixelformat;
3201 } else {
3202 vcs->data_format = data_format;
3203 }
3204
3205 /* data format must be set before clipping/scaling */
3206 vino_set_scaling(vcs, pf->width, pf->height);
3207
3208 dprintk("data format = %s\n",
3209 vino_data_formats[vcs->data_format].description);
3210
3211 pf->width = vcs->clipping.right - vcs->clipping.left;
3212 pf->height = vcs->clipping.bottom - vcs->clipping.top;
3213
3214 pf->field = V4L2_FIELD_INTERLACED;
3215 pf->bytesperline = vcs->line_size;
3216 pf->sizeimage = vcs->line_size *
3217 (vcs->clipping.bottom - vcs->clipping.top) /
3218 vcs->decimation;
3219 pf->colorspace =
3220 vino_data_formats[vcs->data_format].colorspace;
3221
3222 pf->priv = 0;
3223
3224 spin_unlock_irqrestore(&vino_drvdata->input_lock, flags);
3225 return 0;
3226 }
3227
vino_cropcap(struct file * file,void * __fh,struct v4l2_cropcap * ccap)3228 static int vino_cropcap(struct file *file, void *__fh,
3229 struct v4l2_cropcap *ccap)
3230 {
3231 struct vino_channel_settings *vcs = video_drvdata(file);
3232 const struct vino_data_norm *norm;
3233 unsigned long flags;
3234
3235 switch (ccap->type) {
3236 case V4L2_BUF_TYPE_VIDEO_CAPTURE:
3237 spin_lock_irqsave(&vino_drvdata->input_lock, flags);
3238
3239 norm = &vino_data_norms[vcs->data_norm];
3240
3241 spin_unlock_irqrestore(&vino_drvdata->input_lock, flags);
3242
3243 ccap->bounds.left = 0;
3244 ccap->bounds.top = 0;
3245 ccap->bounds.width = norm->width;
3246 ccap->bounds.height = norm->height;
3247 memcpy(&ccap->defrect, &ccap->bounds,
3248 sizeof(struct v4l2_rect));
3249
3250 ccap->pixelaspect.numerator = 1;
3251 ccap->pixelaspect.denominator = 1;
3252 break;
3253 case V4L2_BUF_TYPE_VIDEO_OVERLAY:
3254 default:
3255 return -EINVAL;
3256 }
3257
3258 return 0;
3259 }
3260
vino_g_crop(struct file * file,void * __fh,struct v4l2_crop * c)3261 static int vino_g_crop(struct file *file, void *__fh,
3262 struct v4l2_crop *c)
3263 {
3264 struct vino_channel_settings *vcs = video_drvdata(file);
3265 unsigned long flags;
3266
3267 switch (c->type) {
3268 case V4L2_BUF_TYPE_VIDEO_CAPTURE:
3269 spin_lock_irqsave(&vino_drvdata->input_lock, flags);
3270
3271 c->c.left = vcs->clipping.left;
3272 c->c.top = vcs->clipping.top;
3273 c->c.width = vcs->clipping.right - vcs->clipping.left;
3274 c->c.height = vcs->clipping.bottom - vcs->clipping.top;
3275
3276 spin_unlock_irqrestore(&vino_drvdata->input_lock, flags);
3277 break;
3278 case V4L2_BUF_TYPE_VIDEO_OVERLAY:
3279 default:
3280 return -EINVAL;
3281 }
3282
3283 return 0;
3284 }
3285
vino_s_crop(struct file * file,void * __fh,const struct v4l2_crop * c)3286 static int vino_s_crop(struct file *file, void *__fh,
3287 const struct v4l2_crop *c)
3288 {
3289 struct vino_channel_settings *vcs = video_drvdata(file);
3290 unsigned long flags;
3291
3292 switch (c->type) {
3293 case V4L2_BUF_TYPE_VIDEO_CAPTURE:
3294 spin_lock_irqsave(&vino_drvdata->input_lock, flags);
3295
3296 vino_set_clipping(vcs, c->c.left, c->c.top,
3297 c->c.width, c->c.height);
3298
3299 spin_unlock_irqrestore(&vino_drvdata->input_lock, flags);
3300 break;
3301 case V4L2_BUF_TYPE_VIDEO_OVERLAY:
3302 default:
3303 return -EINVAL;
3304 }
3305
3306 return 0;
3307 }
3308
vino_g_parm(struct file * file,void * __fh,struct v4l2_streamparm * sp)3309 static int vino_g_parm(struct file *file, void *__fh,
3310 struct v4l2_streamparm *sp)
3311 {
3312 struct vino_channel_settings *vcs = video_drvdata(file);
3313 unsigned long flags;
3314 struct v4l2_captureparm *cp = &sp->parm.capture;
3315
3316 cp->capability = V4L2_CAP_TIMEPERFRAME;
3317 cp->timeperframe.numerator = 1;
3318
3319 spin_lock_irqsave(&vino_drvdata->input_lock, flags);
3320
3321 cp->timeperframe.denominator = vcs->fps;
3322
3323 spin_unlock_irqrestore(&vino_drvdata->input_lock, flags);
3324
3325 /* TODO: cp->readbuffers = xxx; */
3326
3327 return 0;
3328 }
3329
vino_s_parm(struct file * file,void * __fh,struct v4l2_streamparm * sp)3330 static int vino_s_parm(struct file *file, void *__fh,
3331 struct v4l2_streamparm *sp)
3332 {
3333 struct vino_channel_settings *vcs = video_drvdata(file);
3334 unsigned long flags;
3335 struct v4l2_captureparm *cp = &sp->parm.capture;
3336
3337 spin_lock_irqsave(&vino_drvdata->input_lock, flags);
3338
3339 if ((cp->timeperframe.numerator == 0) ||
3340 (cp->timeperframe.denominator == 0)) {
3341 /* reset framerate */
3342 vino_set_default_framerate(vcs);
3343 } else {
3344 vino_set_framerate(vcs, cp->timeperframe.denominator /
3345 cp->timeperframe.numerator);
3346 }
3347
3348 spin_unlock_irqrestore(&vino_drvdata->input_lock, flags);
3349
3350 return 0;
3351 }
3352
vino_reqbufs(struct file * file,void * __fh,struct v4l2_requestbuffers * rb)3353 static int vino_reqbufs(struct file *file, void *__fh,
3354 struct v4l2_requestbuffers *rb)
3355 {
3356 struct vino_channel_settings *vcs = video_drvdata(file);
3357
3358 if (vcs->reading)
3359 return -EBUSY;
3360
3361 /* TODO: check queue type */
3362 if (rb->memory != V4L2_MEMORY_MMAP) {
3363 dprintk("type not mmap\n");
3364 return -EINVAL;
3365 }
3366
3367 dprintk("count = %d\n", rb->count);
3368 if (rb->count > 0) {
3369 if (vino_is_capturing(vcs)) {
3370 dprintk("busy, capturing\n");
3371 return -EBUSY;
3372 }
3373
3374 if (vino_queue_has_mapped_buffers(&vcs->fb_queue)) {
3375 dprintk("busy, buffers still mapped\n");
3376 return -EBUSY;
3377 } else {
3378 vcs->streaming = 0;
3379 vino_queue_free(&vcs->fb_queue);
3380 vino_queue_init(&vcs->fb_queue, &rb->count);
3381 }
3382 } else {
3383 vcs->streaming = 0;
3384 vino_capture_stop(vcs);
3385 vino_queue_free(&vcs->fb_queue);
3386 }
3387
3388 return 0;
3389 }
3390
vino_v4l2_get_buffer_status(struct vino_channel_settings * vcs,struct vino_framebuffer * fb,struct v4l2_buffer * b)3391 static void vino_v4l2_get_buffer_status(struct vino_channel_settings *vcs,
3392 struct vino_framebuffer *fb,
3393 struct v4l2_buffer *b)
3394 {
3395 if (vino_queue_outgoing_contains(&vcs->fb_queue,
3396 fb->id)) {
3397 b->flags &= ~V4L2_BUF_FLAG_QUEUED;
3398 b->flags |= V4L2_BUF_FLAG_DONE;
3399 } else if (vino_queue_incoming_contains(&vcs->fb_queue,
3400 fb->id)) {
3401 b->flags &= ~V4L2_BUF_FLAG_DONE;
3402 b->flags |= V4L2_BUF_FLAG_QUEUED;
3403 } else {
3404 b->flags &= ~(V4L2_BUF_FLAG_DONE |
3405 V4L2_BUF_FLAG_QUEUED);
3406 }
3407
3408 b->flags &= ~(V4L2_BUF_FLAG_TIMECODE);
3409
3410 if (fb->map_count > 0)
3411 b->flags |= V4L2_BUF_FLAG_MAPPED;
3412
3413 b->flags &= ~V4L2_BUF_FLAG_TIMESTAMP_MASK;
3414 b->flags |= V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC;
3415
3416 b->index = fb->id;
3417 b->memory = (vcs->fb_queue.type == VINO_MEMORY_MMAP) ?
3418 V4L2_MEMORY_MMAP : V4L2_MEMORY_USERPTR;
3419 b->m.offset = fb->offset;
3420 b->bytesused = fb->data_size;
3421 b->length = fb->size;
3422 b->field = V4L2_FIELD_INTERLACED;
3423 b->sequence = fb->frame_counter;
3424 memcpy(&b->timestamp, &fb->timestamp,
3425 sizeof(struct timeval));
3426 // b->input ?
3427
3428 dprintk("buffer %d: length = %d, bytesused = %d, offset = %d\n",
3429 fb->id, fb->size, fb->data_size, fb->offset);
3430 }
3431
vino_querybuf(struct file * file,void * __fh,struct v4l2_buffer * b)3432 static int vino_querybuf(struct file *file, void *__fh,
3433 struct v4l2_buffer *b)
3434 {
3435 struct vino_channel_settings *vcs = video_drvdata(file);
3436 struct vino_framebuffer *fb;
3437
3438 if (vcs->reading)
3439 return -EBUSY;
3440
3441 /* TODO: check queue type */
3442 if (b->index >= vino_queue_get_length(&vcs->fb_queue)) {
3443 dprintk("invalid index = %d\n",
3444 b->index);
3445 return -EINVAL;
3446 }
3447
3448 fb = vino_queue_get_buffer(&vcs->fb_queue,
3449 b->index);
3450 if (fb == NULL) {
3451 dprintk("vino_queue_get_buffer() failed");
3452 return -EINVAL;
3453 }
3454
3455 vino_v4l2_get_buffer_status(vcs, fb, b);
3456
3457 return 0;
3458 }
3459
vino_qbuf(struct file * file,void * __fh,struct v4l2_buffer * b)3460 static int vino_qbuf(struct file *file, void *__fh,
3461 struct v4l2_buffer *b)
3462 {
3463 struct vino_channel_settings *vcs = video_drvdata(file);
3464 struct vino_framebuffer *fb;
3465 int ret;
3466
3467 if (vcs->reading)
3468 return -EBUSY;
3469
3470 /* TODO: check queue type */
3471 if (b->memory != V4L2_MEMORY_MMAP) {
3472 dprintk("type not mmap\n");
3473 return -EINVAL;
3474 }
3475
3476 fb = vino_capture_enqueue(vcs, b->index);
3477 if (fb == NULL)
3478 return -EINVAL;
3479
3480 vino_v4l2_get_buffer_status(vcs, fb, b);
3481
3482 if (vcs->streaming) {
3483 ret = vino_capture_next(vcs, 1);
3484 if (ret)
3485 return ret;
3486 }
3487
3488 return 0;
3489 }
3490
vino_dqbuf(struct file * file,void * __fh,struct v4l2_buffer * b)3491 static int vino_dqbuf(struct file *file, void *__fh,
3492 struct v4l2_buffer *b)
3493 {
3494 struct vino_channel_settings *vcs = video_drvdata(file);
3495 unsigned int nonblocking = file->f_flags & O_NONBLOCK;
3496 struct vino_framebuffer *fb;
3497 unsigned int incoming, outgoing;
3498 int err;
3499
3500 if (vcs->reading)
3501 return -EBUSY;
3502
3503 /* TODO: check queue type */
3504
3505 err = vino_queue_get_incoming(&vcs->fb_queue, &incoming);
3506 if (err) {
3507 dprintk("vino_queue_get_incoming() failed\n");
3508 return -EINVAL;
3509 }
3510 err = vino_queue_get_outgoing(&vcs->fb_queue, &outgoing);
3511 if (err) {
3512 dprintk("vino_queue_get_outgoing() failed\n");
3513 return -EINVAL;
3514 }
3515
3516 dprintk("incoming = %d, outgoing = %d\n", incoming, outgoing);
3517
3518 if (outgoing == 0) {
3519 if (incoming == 0) {
3520 dprintk("no incoming or outgoing buffers\n");
3521 return -EINVAL;
3522 }
3523 if (nonblocking) {
3524 dprintk("non-blocking I/O was selected and "
3525 "there are no buffers to dequeue\n");
3526 return -EAGAIN;
3527 }
3528
3529 err = vino_wait_for_frame(vcs);
3530 if (err) {
3531 err = vino_wait_for_frame(vcs);
3532 if (err) {
3533 /* interrupted or no frames captured because of
3534 * frame skipping */
3535 /* vino_capture_failed(vcs); */
3536 return -EIO;
3537 }
3538 }
3539 }
3540
3541 fb = vino_queue_remove(&vcs->fb_queue, &b->index);
3542 if (fb == NULL) {
3543 dprintk("vino_queue_remove() failed\n");
3544 return -EINVAL;
3545 }
3546
3547 err = vino_check_buffer(vcs, fb);
3548
3549 vino_v4l2_get_buffer_status(vcs, fb, b);
3550
3551 if (err)
3552 return -EIO;
3553
3554 return 0;
3555 }
3556
vino_streamon(struct file * file,void * __fh,enum v4l2_buf_type i)3557 static int vino_streamon(struct file *file, void *__fh,
3558 enum v4l2_buf_type i)
3559 {
3560 struct vino_channel_settings *vcs = video_drvdata(file);
3561 unsigned int incoming;
3562 int ret;
3563 if (vcs->reading)
3564 return -EBUSY;
3565
3566 if (vcs->streaming)
3567 return 0;
3568
3569 // TODO: check queue type
3570
3571 if (vino_queue_get_length(&vcs->fb_queue) < 1) {
3572 dprintk("no buffers allocated\n");
3573 return -EINVAL;
3574 }
3575
3576 ret = vino_queue_get_incoming(&vcs->fb_queue, &incoming);
3577 if (ret) {
3578 dprintk("vino_queue_get_incoming() failed\n");
3579 return -EINVAL;
3580 }
3581
3582 vcs->streaming = 1;
3583
3584 if (incoming > 0) {
3585 ret = vino_capture_next(vcs, 1);
3586 if (ret) {
3587 vcs->streaming = 0;
3588
3589 dprintk("couldn't start capture\n");
3590 return -EINVAL;
3591 }
3592 }
3593
3594 return 0;
3595 }
3596
vino_streamoff(struct file * file,void * __fh,enum v4l2_buf_type i)3597 static int vino_streamoff(struct file *file, void *__fh,
3598 enum v4l2_buf_type i)
3599 {
3600 struct vino_channel_settings *vcs = video_drvdata(file);
3601 if (vcs->reading)
3602 return -EBUSY;
3603
3604 if (!vcs->streaming)
3605 return 0;
3606
3607 vcs->streaming = 0;
3608 vino_capture_stop(vcs);
3609
3610 return 0;
3611 }
3612
vino_queryctrl(struct file * file,void * __fh,struct v4l2_queryctrl * queryctrl)3613 static int vino_queryctrl(struct file *file, void *__fh,
3614 struct v4l2_queryctrl *queryctrl)
3615 {
3616 struct vino_channel_settings *vcs = video_drvdata(file);
3617 unsigned long flags;
3618 int i;
3619 int err = 0;
3620
3621 spin_lock_irqsave(&vino_drvdata->input_lock, flags);
3622
3623 switch (vcs->input) {
3624 case VINO_INPUT_D1:
3625 for (i = 0; i < VINO_INDYCAM_V4L2_CONTROL_COUNT; i++) {
3626 if (vino_indycam_v4l2_controls[i].id ==
3627 queryctrl->id) {
3628 memcpy(queryctrl,
3629 &vino_indycam_v4l2_controls[i],
3630 sizeof(struct v4l2_queryctrl));
3631 queryctrl->reserved[0] = 0;
3632 goto found;
3633 }
3634 }
3635
3636 err = -EINVAL;
3637 break;
3638 case VINO_INPUT_COMPOSITE:
3639 case VINO_INPUT_SVIDEO:
3640 for (i = 0; i < VINO_SAA7191_V4L2_CONTROL_COUNT; i++) {
3641 if (vino_saa7191_v4l2_controls[i].id ==
3642 queryctrl->id) {
3643 memcpy(queryctrl,
3644 &vino_saa7191_v4l2_controls[i],
3645 sizeof(struct v4l2_queryctrl));
3646 queryctrl->reserved[0] = 0;
3647 goto found;
3648 }
3649 }
3650
3651 err = -EINVAL;
3652 break;
3653 default:
3654 err = -EINVAL;
3655 }
3656
3657 found:
3658 spin_unlock_irqrestore(&vino_drvdata->input_lock, flags);
3659
3660 return err;
3661 }
3662
vino_g_ctrl(struct file * file,void * __fh,struct v4l2_control * control)3663 static int vino_g_ctrl(struct file *file, void *__fh,
3664 struct v4l2_control *control)
3665 {
3666 struct vino_channel_settings *vcs = video_drvdata(file);
3667 unsigned long flags;
3668 int i;
3669 int err = 0;
3670
3671 spin_lock_irqsave(&vino_drvdata->input_lock, flags);
3672
3673 switch (vcs->input) {
3674 case VINO_INPUT_D1: {
3675 err = -EINVAL;
3676 for (i = 0; i < VINO_INDYCAM_V4L2_CONTROL_COUNT; i++) {
3677 if (vino_indycam_v4l2_controls[i].id == control->id) {
3678 err = 0;
3679 break;
3680 }
3681 }
3682
3683 if (err)
3684 goto out;
3685
3686 err = camera_call(core, g_ctrl, control);
3687 if (err)
3688 err = -EINVAL;
3689 break;
3690 }
3691 case VINO_INPUT_COMPOSITE:
3692 case VINO_INPUT_SVIDEO: {
3693 err = -EINVAL;
3694 for (i = 0; i < VINO_SAA7191_V4L2_CONTROL_COUNT; i++) {
3695 if (vino_saa7191_v4l2_controls[i].id == control->id) {
3696 err = 0;
3697 break;
3698 }
3699 }
3700
3701 if (err)
3702 goto out;
3703
3704 err = decoder_call(core, g_ctrl, control);
3705 if (err)
3706 err = -EINVAL;
3707 break;
3708 }
3709 default:
3710 err = -EINVAL;
3711 }
3712
3713 out:
3714 spin_unlock_irqrestore(&vino_drvdata->input_lock, flags);
3715
3716 return err;
3717 }
3718
vino_s_ctrl(struct file * file,void * __fh,struct v4l2_control * control)3719 static int vino_s_ctrl(struct file *file, void *__fh,
3720 struct v4l2_control *control)
3721 {
3722 struct vino_channel_settings *vcs = video_drvdata(file);
3723 unsigned long flags;
3724 int i;
3725 int err = 0;
3726
3727 spin_lock_irqsave(&vino_drvdata->input_lock, flags);
3728
3729 if (!vino_is_input_owner(vcs)) {
3730 err = -EBUSY;
3731 goto out;
3732 }
3733
3734 switch (vcs->input) {
3735 case VINO_INPUT_D1: {
3736 err = -EINVAL;
3737 for (i = 0; i < VINO_INDYCAM_V4L2_CONTROL_COUNT; i++) {
3738 if (vino_indycam_v4l2_controls[i].id == control->id) {
3739 err = 0;
3740 break;
3741 }
3742 }
3743 if (err)
3744 goto out;
3745 if (control->value < vino_indycam_v4l2_controls[i].minimum ||
3746 control->value > vino_indycam_v4l2_controls[i].maximum) {
3747 err = -ERANGE;
3748 goto out;
3749 }
3750 err = camera_call(core, s_ctrl, control);
3751 if (err)
3752 err = -EINVAL;
3753 break;
3754 }
3755 case VINO_INPUT_COMPOSITE:
3756 case VINO_INPUT_SVIDEO: {
3757 err = -EINVAL;
3758 for (i = 0; i < VINO_SAA7191_V4L2_CONTROL_COUNT; i++) {
3759 if (vino_saa7191_v4l2_controls[i].id == control->id) {
3760 err = 0;
3761 break;
3762 }
3763 }
3764 if (err)
3765 goto out;
3766 if (control->value < vino_saa7191_v4l2_controls[i].minimum ||
3767 control->value > vino_saa7191_v4l2_controls[i].maximum) {
3768 err = -ERANGE;
3769 goto out;
3770 }
3771
3772 err = decoder_call(core, s_ctrl, control);
3773 if (err)
3774 err = -EINVAL;
3775 break;
3776 }
3777 default:
3778 err = -EINVAL;
3779 }
3780
3781 out:
3782 spin_unlock_irqrestore(&vino_drvdata->input_lock, flags);
3783
3784 return err;
3785 }
3786
3787 /* File operations */
3788
vino_open(struct file * file)3789 static int vino_open(struct file *file)
3790 {
3791 struct vino_channel_settings *vcs = video_drvdata(file);
3792 int ret = 0;
3793 dprintk("open(): channel = %c\n",
3794 (vcs->channel == VINO_CHANNEL_A) ? 'A' : 'B');
3795
3796 mutex_lock(&vcs->mutex);
3797
3798 if (vcs->users) {
3799 dprintk("open(): driver busy\n");
3800 ret = -EBUSY;
3801 goto out;
3802 }
3803
3804 ret = vino_acquire_input(vcs);
3805 if (ret) {
3806 dprintk("open(): vino_acquire_input() failed\n");
3807 goto out;
3808 }
3809
3810 vcs->users++;
3811
3812 out:
3813 mutex_unlock(&vcs->mutex);
3814
3815 dprintk("open(): %s!\n", ret ? "failed" : "complete");
3816
3817 return ret;
3818 }
3819
vino_close(struct file * file)3820 static int vino_close(struct file *file)
3821 {
3822 struct vino_channel_settings *vcs = video_drvdata(file);
3823 dprintk("close():\n");
3824
3825 mutex_lock(&vcs->mutex);
3826
3827 vcs->users--;
3828
3829 if (!vcs->users) {
3830 vino_release_input(vcs);
3831
3832 /* stop DMA and free buffers */
3833 vino_capture_stop(vcs);
3834 vino_queue_free(&vcs->fb_queue);
3835 }
3836
3837 mutex_unlock(&vcs->mutex);
3838
3839 return 0;
3840 }
3841
vino_vm_open(struct vm_area_struct * vma)3842 static void vino_vm_open(struct vm_area_struct *vma)
3843 {
3844 struct vino_framebuffer *fb = vma->vm_private_data;
3845
3846 fb->map_count++;
3847 dprintk("vino_vm_open(): count = %d\n", fb->map_count);
3848 }
3849
vino_vm_close(struct vm_area_struct * vma)3850 static void vino_vm_close(struct vm_area_struct *vma)
3851 {
3852 struct vino_framebuffer *fb = vma->vm_private_data;
3853
3854 fb->map_count--;
3855 dprintk("vino_vm_close(): count = %d\n", fb->map_count);
3856 }
3857
3858 static const struct vm_operations_struct vino_vm_ops = {
3859 .open = vino_vm_open,
3860 .close = vino_vm_close,
3861 };
3862
vino_mmap(struct file * file,struct vm_area_struct * vma)3863 static int vino_mmap(struct file *file, struct vm_area_struct *vma)
3864 {
3865 struct vino_channel_settings *vcs = video_drvdata(file);
3866
3867 unsigned long start = vma->vm_start;
3868 unsigned long size = vma->vm_end - vma->vm_start;
3869 unsigned long offset = vma->vm_pgoff << PAGE_SHIFT;
3870
3871 struct vino_framebuffer *fb = NULL;
3872 unsigned int i, length;
3873 int ret = 0;
3874
3875 dprintk("mmap():\n");
3876
3877 // TODO: reject mmap if already mapped
3878
3879 if (mutex_lock_interruptible(&vcs->mutex))
3880 return -EINTR;
3881
3882 if (vcs->reading) {
3883 ret = -EBUSY;
3884 goto out;
3885 }
3886
3887 // TODO: check queue type
3888
3889 if (!(vma->vm_flags & VM_WRITE)) {
3890 dprintk("mmap(): app bug: PROT_WRITE please\n");
3891 ret = -EINVAL;
3892 goto out;
3893 }
3894 if (!(vma->vm_flags & VM_SHARED)) {
3895 dprintk("mmap(): app bug: MAP_SHARED please\n");
3896 ret = -EINVAL;
3897 goto out;
3898 }
3899
3900 /* find the correct buffer using offset */
3901 length = vino_queue_get_length(&vcs->fb_queue);
3902 if (length == 0) {
3903 dprintk("mmap(): queue not initialized\n");
3904 ret = -EINVAL;
3905 goto out;
3906 }
3907
3908 for (i = 0; i < length; i++) {
3909 fb = vino_queue_get_buffer(&vcs->fb_queue, i);
3910 if (fb == NULL) {
3911 dprintk("mmap(): vino_queue_get_buffer() failed\n");
3912 ret = -EINVAL;
3913 goto out;
3914 }
3915
3916 if (fb->offset == offset)
3917 goto found;
3918 }
3919
3920 dprintk("mmap(): invalid offset = %lu\n", offset);
3921 ret = -EINVAL;
3922 goto out;
3923
3924 found:
3925 dprintk("mmap(): buffer = %d\n", i);
3926
3927 if (size > (fb->desc_table.page_count * PAGE_SIZE)) {
3928 dprintk("mmap(): failed: size = %lu > %lu\n",
3929 size, fb->desc_table.page_count * PAGE_SIZE);
3930 ret = -EINVAL;
3931 goto out;
3932 }
3933
3934 for (i = 0; i < fb->desc_table.page_count; i++) {
3935 unsigned long pfn =
3936 virt_to_phys((void *)fb->desc_table.virtual[i]) >>
3937 PAGE_SHIFT;
3938
3939 if (size < PAGE_SIZE)
3940 break;
3941
3942 // protection was: PAGE_READONLY
3943 if (remap_pfn_range(vma, start, pfn, PAGE_SIZE,
3944 vma->vm_page_prot)) {
3945 dprintk("mmap(): remap_pfn_range() failed\n");
3946 ret = -EAGAIN;
3947 goto out;
3948 }
3949
3950 start += PAGE_SIZE;
3951 size -= PAGE_SIZE;
3952 }
3953
3954 fb->map_count = 1;
3955
3956 vma->vm_flags |= VM_DONTEXPAND | VM_DONTDUMP;
3957 vma->vm_flags &= ~VM_IO;
3958 vma->vm_private_data = fb;
3959 vma->vm_file = file;
3960 vma->vm_ops = &vino_vm_ops;
3961
3962 out:
3963 mutex_unlock(&vcs->mutex);
3964
3965 return ret;
3966 }
3967
vino_poll(struct file * file,poll_table * pt)3968 static unsigned int vino_poll(struct file *file, poll_table *pt)
3969 {
3970 struct vino_channel_settings *vcs = video_drvdata(file);
3971 unsigned int outgoing;
3972 unsigned int ret = 0;
3973
3974 // lock mutex (?)
3975 // TODO: this has to be corrected for different read modes
3976
3977 dprintk("poll():\n");
3978
3979 if (vino_queue_get_outgoing(&vcs->fb_queue, &outgoing)) {
3980 dprintk("poll(): vino_queue_get_outgoing() failed\n");
3981 ret = POLLERR;
3982 goto error;
3983 }
3984 if (outgoing > 0)
3985 goto over;
3986
3987 poll_wait(file, &vcs->fb_queue.frame_wait_queue, pt);
3988
3989 if (vino_queue_get_outgoing(&vcs->fb_queue, &outgoing)) {
3990 dprintk("poll(): vino_queue_get_outgoing() failed\n");
3991 ret = POLLERR;
3992 goto error;
3993 }
3994
3995 over:
3996 dprintk("poll(): data %savailable\n",
3997 (outgoing > 0) ? "" : "not ");
3998
3999 if (outgoing > 0)
4000 ret = POLLIN | POLLRDNORM;
4001
4002 error:
4003 return ret;
4004 }
4005
vino_ioctl(struct file * file,unsigned int cmd,unsigned long arg)4006 static long vino_ioctl(struct file *file,
4007 unsigned int cmd, unsigned long arg)
4008 {
4009 struct vino_channel_settings *vcs = video_drvdata(file);
4010 long ret;
4011
4012 if (mutex_lock_interruptible(&vcs->mutex))
4013 return -EINTR;
4014
4015 ret = video_ioctl2(file, cmd, arg);
4016
4017 mutex_unlock(&vcs->mutex);
4018
4019 return ret;
4020 }
4021
4022 /* Initialization and cleanup */
4023
4024 /* __initdata */
4025 static int vino_init_stage;
4026
4027 const struct v4l2_ioctl_ops vino_ioctl_ops = {
4028 .vidioc_enum_fmt_vid_cap = vino_enum_fmt_vid_cap,
4029 .vidioc_g_fmt_vid_cap = vino_g_fmt_vid_cap,
4030 .vidioc_s_fmt_vid_cap = vino_s_fmt_vid_cap,
4031 .vidioc_try_fmt_vid_cap = vino_try_fmt_vid_cap,
4032 .vidioc_querycap = vino_querycap,
4033 .vidioc_enum_input = vino_enum_input,
4034 .vidioc_g_input = vino_g_input,
4035 .vidioc_s_input = vino_s_input,
4036 .vidioc_g_std = vino_g_std,
4037 .vidioc_s_std = vino_s_std,
4038 .vidioc_querystd = vino_querystd,
4039 .vidioc_cropcap = vino_cropcap,
4040 .vidioc_s_crop = vino_s_crop,
4041 .vidioc_g_crop = vino_g_crop,
4042 .vidioc_s_parm = vino_s_parm,
4043 .vidioc_g_parm = vino_g_parm,
4044 .vidioc_reqbufs = vino_reqbufs,
4045 .vidioc_querybuf = vino_querybuf,
4046 .vidioc_qbuf = vino_qbuf,
4047 .vidioc_dqbuf = vino_dqbuf,
4048 .vidioc_streamon = vino_streamon,
4049 .vidioc_streamoff = vino_streamoff,
4050 .vidioc_queryctrl = vino_queryctrl,
4051 .vidioc_g_ctrl = vino_g_ctrl,
4052 .vidioc_s_ctrl = vino_s_ctrl,
4053 };
4054
4055 static const struct v4l2_file_operations vino_fops = {
4056 .owner = THIS_MODULE,
4057 .open = vino_open,
4058 .release = vino_close,
4059 .unlocked_ioctl = vino_ioctl,
4060 .mmap = vino_mmap,
4061 .poll = vino_poll,
4062 };
4063
4064 static struct video_device vdev_template = {
4065 .name = "NOT SET",
4066 .fops = &vino_fops,
4067 .ioctl_ops = &vino_ioctl_ops,
4068 .tvnorms = V4L2_STD_NTSC | V4L2_STD_PAL | V4L2_STD_SECAM,
4069 };
4070
vino_module_cleanup(int stage)4071 static void vino_module_cleanup(int stage)
4072 {
4073 switch(stage) {
4074 case 11:
4075 video_unregister_device(vino_drvdata->b.vdev);
4076 vino_drvdata->b.vdev = NULL;
4077 case 10:
4078 video_unregister_device(vino_drvdata->a.vdev);
4079 vino_drvdata->a.vdev = NULL;
4080 case 9:
4081 i2c_del_adapter(&vino_i2c_adapter);
4082 case 8:
4083 free_irq(SGI_VINO_IRQ, NULL);
4084 case 7:
4085 if (vino_drvdata->b.vdev) {
4086 video_device_release(vino_drvdata->b.vdev);
4087 vino_drvdata->b.vdev = NULL;
4088 }
4089 case 6:
4090 if (vino_drvdata->a.vdev) {
4091 video_device_release(vino_drvdata->a.vdev);
4092 vino_drvdata->a.vdev = NULL;
4093 }
4094 case 5:
4095 /* all entries in dma_cpu dummy table have the same address */
4096 dma_unmap_single(NULL,
4097 vino_drvdata->dummy_desc_table.dma_cpu[0],
4098 PAGE_SIZE, DMA_FROM_DEVICE);
4099 dma_free_coherent(NULL, VINO_DUMMY_DESC_COUNT
4100 * sizeof(dma_addr_t),
4101 (void *)vino_drvdata->
4102 dummy_desc_table.dma_cpu,
4103 vino_drvdata->dummy_desc_table.dma);
4104 case 4:
4105 free_page(vino_drvdata->dummy_page);
4106 case 3:
4107 v4l2_device_unregister(&vino_drvdata->v4l2_dev);
4108 case 2:
4109 kfree(vino_drvdata);
4110 case 1:
4111 iounmap(vino);
4112 case 0:
4113 break;
4114 default:
4115 dprintk("vino_module_cleanup(): invalid cleanup stage = %d\n",
4116 stage);
4117 }
4118 }
4119
vino_probe(void)4120 static int vino_probe(void)
4121 {
4122 unsigned long rev_id;
4123
4124 if (ip22_is_fullhouse()) {
4125 printk(KERN_ERR "VINO doesn't exist in IP22 Fullhouse\n");
4126 return -ENODEV;
4127 }
4128
4129 if (!(sgimc->systemid & SGIMC_SYSID_EPRESENT)) {
4130 printk(KERN_ERR "VINO is not found (EISA BUS not present)\n");
4131 return -ENODEV;
4132 }
4133
4134 vino = (struct sgi_vino *)ioremap(VINO_BASE, sizeof(struct sgi_vino));
4135 if (!vino) {
4136 printk(KERN_ERR "VINO: ioremap() failed\n");
4137 return -EIO;
4138 }
4139 vino_init_stage++;
4140
4141 if (get_dbe(rev_id, &(vino->rev_id))) {
4142 printk(KERN_ERR "Failed to read VINO revision register\n");
4143 vino_module_cleanup(vino_init_stage);
4144 return -ENODEV;
4145 }
4146
4147 if (VINO_ID_VALUE(rev_id) != VINO_CHIP_ID) {
4148 printk(KERN_ERR "Unknown VINO chip ID (Rev/ID: 0x%02lx)\n",
4149 rev_id);
4150 vino_module_cleanup(vino_init_stage);
4151 return -ENODEV;
4152 }
4153
4154 printk(KERN_INFO "VINO revision %ld found\n", VINO_REV_NUM(rev_id));
4155
4156 return 0;
4157 }
4158
vino_init(void)4159 static int vino_init(void)
4160 {
4161 dma_addr_t dma_dummy_address;
4162 int err;
4163 int i;
4164
4165 vino_drvdata = kzalloc(sizeof(struct vino_settings), GFP_KERNEL);
4166 if (!vino_drvdata) {
4167 vino_module_cleanup(vino_init_stage);
4168 return -ENOMEM;
4169 }
4170 vino_init_stage++;
4171 strlcpy(vino_drvdata->v4l2_dev.name, "vino",
4172 sizeof(vino_drvdata->v4l2_dev.name));
4173 err = v4l2_device_register(NULL, &vino_drvdata->v4l2_dev);
4174 if (err)
4175 return err;
4176 vino_init_stage++;
4177
4178 /* create a dummy dma descriptor */
4179 vino_drvdata->dummy_page = get_zeroed_page(GFP_KERNEL | GFP_DMA);
4180 if (!vino_drvdata->dummy_page) {
4181 vino_module_cleanup(vino_init_stage);
4182 return -ENOMEM;
4183 }
4184 vino_init_stage++;
4185
4186 // TODO: use page_count in dummy_desc_table
4187
4188 vino_drvdata->dummy_desc_table.dma_cpu =
4189 dma_alloc_coherent(NULL,
4190 VINO_DUMMY_DESC_COUNT * sizeof(dma_addr_t),
4191 &vino_drvdata->dummy_desc_table.dma,
4192 GFP_KERNEL | GFP_DMA);
4193 if (!vino_drvdata->dummy_desc_table.dma_cpu) {
4194 vino_module_cleanup(vino_init_stage);
4195 return -ENOMEM;
4196 }
4197 vino_init_stage++;
4198
4199 dma_dummy_address = dma_map_single(NULL,
4200 (void *)vino_drvdata->dummy_page,
4201 PAGE_SIZE, DMA_FROM_DEVICE);
4202 for (i = 0; i < VINO_DUMMY_DESC_COUNT; i++) {
4203 vino_drvdata->dummy_desc_table.dma_cpu[i] = dma_dummy_address;
4204 }
4205
4206 /* initialize VINO */
4207
4208 vino->control = 0;
4209 vino->a.next_4_desc = vino_drvdata->dummy_desc_table.dma;
4210 vino->b.next_4_desc = vino_drvdata->dummy_desc_table.dma;
4211 udelay(VINO_DESC_FETCH_DELAY);
4212
4213 vino->intr_status = 0;
4214
4215 vino->a.fifo_thres = VINO_FIFO_THRESHOLD_DEFAULT;
4216 vino->b.fifo_thres = VINO_FIFO_THRESHOLD_DEFAULT;
4217
4218 return 0;
4219 }
4220
vino_init_channel_settings(struct vino_channel_settings * vcs,unsigned int channel,const char * name)4221 static int vino_init_channel_settings(struct vino_channel_settings *vcs,
4222 unsigned int channel, const char *name)
4223 {
4224 vcs->channel = channel;
4225 vcs->input = VINO_INPUT_NONE;
4226 vcs->alpha = 0;
4227 vcs->users = 0;
4228 vcs->data_format = VINO_DATA_FMT_GREY;
4229 vcs->data_norm = VINO_DATA_NORM_NTSC;
4230 vcs->decimation = 1;
4231 vino_set_default_clipping(vcs);
4232 vino_set_default_framerate(vcs);
4233
4234 vcs->capturing = 0;
4235
4236 mutex_init(&vcs->mutex);
4237 spin_lock_init(&vcs->capture_lock);
4238
4239 mutex_init(&vcs->fb_queue.queue_mutex);
4240 spin_lock_init(&vcs->fb_queue.queue_lock);
4241 init_waitqueue_head(&vcs->fb_queue.frame_wait_queue);
4242
4243 vcs->vdev = video_device_alloc();
4244 if (!vcs->vdev) {
4245 vino_module_cleanup(vino_init_stage);
4246 return -ENOMEM;
4247 }
4248 vino_init_stage++;
4249
4250 memcpy(vcs->vdev, &vdev_template,
4251 sizeof(struct video_device));
4252 strcpy(vcs->vdev->name, name);
4253 vcs->vdev->release = video_device_release;
4254 vcs->vdev->v4l2_dev = &vino_drvdata->v4l2_dev;
4255
4256 video_set_drvdata(vcs->vdev, vcs);
4257
4258 return 0;
4259 }
4260
vino_module_init(void)4261 static int __init vino_module_init(void)
4262 {
4263 int ret;
4264
4265 printk(KERN_INFO "SGI VINO driver version %s\n",
4266 VINO_MODULE_VERSION);
4267
4268 ret = vino_probe();
4269 if (ret)
4270 return ret;
4271
4272 ret = vino_init();
4273 if (ret)
4274 return ret;
4275
4276 /* initialize data structures */
4277
4278 spin_lock_init(&vino_drvdata->vino_lock);
4279 spin_lock_init(&vino_drvdata->input_lock);
4280
4281 ret = vino_init_channel_settings(&vino_drvdata->a, VINO_CHANNEL_A,
4282 vino_vdev_name_a);
4283 if (ret)
4284 return ret;
4285
4286 ret = vino_init_channel_settings(&vino_drvdata->b, VINO_CHANNEL_B,
4287 vino_vdev_name_b);
4288 if (ret)
4289 return ret;
4290
4291 /* initialize hardware and register V4L devices */
4292
4293 ret = request_irq(SGI_VINO_IRQ, vino_interrupt, 0,
4294 vino_driver_description, NULL);
4295 if (ret) {
4296 printk(KERN_ERR "VINO: requesting IRQ %02d failed\n",
4297 SGI_VINO_IRQ);
4298 vino_module_cleanup(vino_init_stage);
4299 return -EAGAIN;
4300 }
4301 vino_init_stage++;
4302
4303 ret = i2c_add_adapter(&vino_i2c_adapter);
4304 if (ret) {
4305 printk(KERN_ERR "VINO I2C bus registration failed\n");
4306 vino_module_cleanup(vino_init_stage);
4307 return ret;
4308 }
4309 i2c_set_adapdata(&vino_i2c_adapter, &vino_drvdata->v4l2_dev);
4310 vino_init_stage++;
4311
4312 ret = video_register_device(vino_drvdata->a.vdev,
4313 VFL_TYPE_GRABBER, -1);
4314 if (ret < 0) {
4315 printk(KERN_ERR "VINO channel A Video4Linux-device "
4316 "registration failed\n");
4317 vino_module_cleanup(vino_init_stage);
4318 return -EINVAL;
4319 }
4320 vino_init_stage++;
4321
4322 ret = video_register_device(vino_drvdata->b.vdev,
4323 VFL_TYPE_GRABBER, -1);
4324 if (ret < 0) {
4325 printk(KERN_ERR "VINO channel B Video4Linux-device "
4326 "registration failed\n");
4327 vino_module_cleanup(vino_init_stage);
4328 return -EINVAL;
4329 }
4330 vino_init_stage++;
4331
4332 vino_drvdata->decoder =
4333 v4l2_i2c_new_subdev(&vino_drvdata->v4l2_dev, &vino_i2c_adapter,
4334 "saa7191", 0, I2C_ADDRS(0x45));
4335 vino_drvdata->camera =
4336 v4l2_i2c_new_subdev(&vino_drvdata->v4l2_dev, &vino_i2c_adapter,
4337 "indycam", 0, I2C_ADDRS(0x2b));
4338
4339 dprintk("init complete!\n");
4340
4341 return 0;
4342 }
4343
vino_module_exit(void)4344 static void __exit vino_module_exit(void)
4345 {
4346 dprintk("exiting, stage = %d ...\n", vino_init_stage);
4347 vino_module_cleanup(vino_init_stage);
4348 dprintk("cleanup complete, exit!\n");
4349 }
4350
4351 module_init(vino_module_init);
4352 module_exit(vino_module_exit);
4353