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[media] media: videobuf2: Restructure vb2_buffer
[mirror_ubuntu-hirsute-kernel.git] / drivers / media / platform / coda / coda-common.c
1 /*
2 * Coda multi-standard codec IP
3 *
4 * Copyright (C) 2012 Vista Silicon S.L.
5 * Javier Martin, <javier.martin@vista-silicon.com>
6 * Xavier Duret
7 *
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License as published by
10 * the Free Software Foundation; either version 2 of the License, or
11 * (at your option) any later version.
12 */
13
14 #include <linux/clk.h>
15 #include <linux/debugfs.h>
16 #include <linux/delay.h>
17 #include <linux/firmware.h>
18 #include <linux/gcd.h>
19 #include <linux/genalloc.h>
20 #include <linux/interrupt.h>
21 #include <linux/io.h>
22 #include <linux/irq.h>
23 #include <linux/kfifo.h>
24 #include <linux/module.h>
25 #include <linux/of_device.h>
26 #include <linux/platform_device.h>
27 #include <linux/pm_runtime.h>
28 #include <linux/slab.h>
29 #include <linux/videodev2.h>
30 #include <linux/of.h>
31 #include <linux/platform_data/coda.h>
32 #include <linux/reset.h>
33
34 #include <media/v4l2-ctrls.h>
35 #include <media/v4l2-device.h>
36 #include <media/v4l2-event.h>
37 #include <media/v4l2-ioctl.h>
38 #include <media/v4l2-mem2mem.h>
39 #include <media/videobuf2-v4l2.h>
40 #include <media/videobuf2-dma-contig.h>
41 #include <media/videobuf2-vmalloc.h>
42
43 #include "coda.h"
44
45 #define CODA_NAME "coda"
46
47 #define CODADX6_MAX_INSTANCES 4
48 #define CODA_MAX_FORMATS 4
49
50 #define CODA_ISRAM_SIZE (2048 * 2)
51
52 #define MIN_W 176
53 #define MIN_H 144
54
55 #define S_ALIGN 1 /* multiple of 2 */
56 #define W_ALIGN 1 /* multiple of 2 */
57 #define H_ALIGN 1 /* multiple of 2 */
58
59 #define fh_to_ctx(__fh) container_of(__fh, struct coda_ctx, fh)
60
61 int coda_debug;
62 module_param(coda_debug, int, 0644);
63 MODULE_PARM_DESC(coda_debug, "Debug level (0-2)");
64
65 static int disable_tiling;
66 module_param(disable_tiling, int, 0644);
67 MODULE_PARM_DESC(disable_tiling, "Disable tiled frame buffers");
68
69 void coda_write(struct coda_dev *dev, u32 data, u32 reg)
70 {
71 v4l2_dbg(2, coda_debug, &dev->v4l2_dev,
72 "%s: data=0x%x, reg=0x%x\n", __func__, data, reg);
73 writel(data, dev->regs_base + reg);
74 }
75
76 unsigned int coda_read(struct coda_dev *dev, u32 reg)
77 {
78 u32 data;
79
80 data = readl(dev->regs_base + reg);
81 v4l2_dbg(2, coda_debug, &dev->v4l2_dev,
82 "%s: data=0x%x, reg=0x%x\n", __func__, data, reg);
83 return data;
84 }
85
86 void coda_write_base(struct coda_ctx *ctx, struct coda_q_data *q_data,
87 struct vb2_v4l2_buffer *buf, unsigned int reg_y)
88 {
89 u32 base_y = vb2_dma_contig_plane_dma_addr(&buf->vb2_buf, 0);
90 u32 base_cb, base_cr;
91
92 switch (q_data->fourcc) {
93 case V4L2_PIX_FMT_NV12:
94 case V4L2_PIX_FMT_YUV420:
95 default:
96 base_cb = base_y + q_data->bytesperline * q_data->height;
97 base_cr = base_cb + q_data->bytesperline * q_data->height / 4;
98 break;
99 case V4L2_PIX_FMT_YVU420:
100 /* Switch Cb and Cr for YVU420 format */
101 base_cr = base_y + q_data->bytesperline * q_data->height;
102 base_cb = base_cr + q_data->bytesperline * q_data->height / 4;
103 break;
104 case V4L2_PIX_FMT_YUV422P:
105 base_cb = base_y + q_data->bytesperline * q_data->height;
106 base_cr = base_cb + q_data->bytesperline * q_data->height / 2;
107 }
108
109 coda_write(ctx->dev, base_y, reg_y);
110 coda_write(ctx->dev, base_cb, reg_y + 4);
111 coda_write(ctx->dev, base_cr, reg_y + 8);
112 }
113
114 #define CODA_CODEC(mode, src_fourcc, dst_fourcc, max_w, max_h) \
115 { mode, src_fourcc, dst_fourcc, max_w, max_h }
116
117 /*
118 * Arrays of codecs supported by each given version of Coda:
119 * i.MX27 -> codadx6
120 * i.MX5x -> coda7
121 * i.MX6 -> coda960
122 * Use V4L2_PIX_FMT_YUV420 as placeholder for all supported YUV 4:2:0 variants
123 */
124 static const struct coda_codec codadx6_codecs[] = {
125 CODA_CODEC(CODADX6_MODE_ENCODE_H264, V4L2_PIX_FMT_YUV420, V4L2_PIX_FMT_H264, 720, 576),
126 CODA_CODEC(CODADX6_MODE_ENCODE_MP4, V4L2_PIX_FMT_YUV420, V4L2_PIX_FMT_MPEG4, 720, 576),
127 };
128
129 static const struct coda_codec coda7_codecs[] = {
130 CODA_CODEC(CODA7_MODE_ENCODE_H264, V4L2_PIX_FMT_YUV420, V4L2_PIX_FMT_H264, 1280, 720),
131 CODA_CODEC(CODA7_MODE_ENCODE_MP4, V4L2_PIX_FMT_YUV420, V4L2_PIX_FMT_MPEG4, 1280, 720),
132 CODA_CODEC(CODA7_MODE_ENCODE_MJPG, V4L2_PIX_FMT_YUV420, V4L2_PIX_FMT_JPEG, 8192, 8192),
133 CODA_CODEC(CODA7_MODE_DECODE_H264, V4L2_PIX_FMT_H264, V4L2_PIX_FMT_YUV420, 1920, 1088),
134 CODA_CODEC(CODA7_MODE_DECODE_MP4, V4L2_PIX_FMT_MPEG4, V4L2_PIX_FMT_YUV420, 1920, 1088),
135 CODA_CODEC(CODA7_MODE_DECODE_MJPG, V4L2_PIX_FMT_JPEG, V4L2_PIX_FMT_YUV420, 8192, 8192),
136 };
137
138 static const struct coda_codec coda9_codecs[] = {
139 CODA_CODEC(CODA9_MODE_ENCODE_H264, V4L2_PIX_FMT_YUV420, V4L2_PIX_FMT_H264, 1920, 1088),
140 CODA_CODEC(CODA9_MODE_ENCODE_MP4, V4L2_PIX_FMT_YUV420, V4L2_PIX_FMT_MPEG4, 1920, 1088),
141 CODA_CODEC(CODA9_MODE_DECODE_H264, V4L2_PIX_FMT_H264, V4L2_PIX_FMT_YUV420, 1920, 1088),
142 CODA_CODEC(CODA9_MODE_DECODE_MP4, V4L2_PIX_FMT_MPEG4, V4L2_PIX_FMT_YUV420, 1920, 1088),
143 };
144
145 struct coda_video_device {
146 const char *name;
147 enum coda_inst_type type;
148 const struct coda_context_ops *ops;
149 bool direct;
150 u32 src_formats[CODA_MAX_FORMATS];
151 u32 dst_formats[CODA_MAX_FORMATS];
152 };
153
154 static const struct coda_video_device coda_bit_encoder = {
155 .name = "coda-encoder",
156 .type = CODA_INST_ENCODER,
157 .ops = &coda_bit_encode_ops,
158 .src_formats = {
159 V4L2_PIX_FMT_NV12,
160 V4L2_PIX_FMT_YUV420,
161 V4L2_PIX_FMT_YVU420,
162 },
163 .dst_formats = {
164 V4L2_PIX_FMT_H264,
165 V4L2_PIX_FMT_MPEG4,
166 },
167 };
168
169 static const struct coda_video_device coda_bit_jpeg_encoder = {
170 .name = "coda-jpeg-encoder",
171 .type = CODA_INST_ENCODER,
172 .ops = &coda_bit_encode_ops,
173 .src_formats = {
174 V4L2_PIX_FMT_NV12,
175 V4L2_PIX_FMT_YUV420,
176 V4L2_PIX_FMT_YVU420,
177 V4L2_PIX_FMT_YUV422P,
178 },
179 .dst_formats = {
180 V4L2_PIX_FMT_JPEG,
181 },
182 };
183
184 static const struct coda_video_device coda_bit_decoder = {
185 .name = "coda-decoder",
186 .type = CODA_INST_DECODER,
187 .ops = &coda_bit_decode_ops,
188 .src_formats = {
189 V4L2_PIX_FMT_H264,
190 V4L2_PIX_FMT_MPEG4,
191 },
192 .dst_formats = {
193 V4L2_PIX_FMT_NV12,
194 V4L2_PIX_FMT_YUV420,
195 V4L2_PIX_FMT_YVU420,
196 },
197 };
198
199 static const struct coda_video_device coda_bit_jpeg_decoder = {
200 .name = "coda-jpeg-decoder",
201 .type = CODA_INST_DECODER,
202 .ops = &coda_bit_decode_ops,
203 .src_formats = {
204 V4L2_PIX_FMT_JPEG,
205 },
206 .dst_formats = {
207 V4L2_PIX_FMT_NV12,
208 V4L2_PIX_FMT_YUV420,
209 V4L2_PIX_FMT_YVU420,
210 V4L2_PIX_FMT_YUV422P,
211 },
212 };
213
214 static const struct coda_video_device *codadx6_video_devices[] = {
215 &coda_bit_encoder,
216 };
217
218 static const struct coda_video_device *coda7_video_devices[] = {
219 &coda_bit_jpeg_encoder,
220 &coda_bit_jpeg_decoder,
221 &coda_bit_encoder,
222 &coda_bit_decoder,
223 };
224
225 static const struct coda_video_device *coda9_video_devices[] = {
226 &coda_bit_encoder,
227 &coda_bit_decoder,
228 };
229
230 /*
231 * Normalize all supported YUV 4:2:0 formats to the value used in the codec
232 * tables.
233 */
234 static u32 coda_format_normalize_yuv(u32 fourcc)
235 {
236 switch (fourcc) {
237 case V4L2_PIX_FMT_NV12:
238 case V4L2_PIX_FMT_YUV420:
239 case V4L2_PIX_FMT_YVU420:
240 case V4L2_PIX_FMT_YUV422P:
241 return V4L2_PIX_FMT_YUV420;
242 default:
243 return fourcc;
244 }
245 }
246
247 static const struct coda_codec *coda_find_codec(struct coda_dev *dev,
248 int src_fourcc, int dst_fourcc)
249 {
250 const struct coda_codec *codecs = dev->devtype->codecs;
251 int num_codecs = dev->devtype->num_codecs;
252 int k;
253
254 src_fourcc = coda_format_normalize_yuv(src_fourcc);
255 dst_fourcc = coda_format_normalize_yuv(dst_fourcc);
256 if (src_fourcc == dst_fourcc)
257 return NULL;
258
259 for (k = 0; k < num_codecs; k++) {
260 if (codecs[k].src_fourcc == src_fourcc &&
261 codecs[k].dst_fourcc == dst_fourcc)
262 break;
263 }
264
265 if (k == num_codecs)
266 return NULL;
267
268 return &codecs[k];
269 }
270
271 static void coda_get_max_dimensions(struct coda_dev *dev,
272 const struct coda_codec *codec,
273 int *max_w, int *max_h)
274 {
275 const struct coda_codec *codecs = dev->devtype->codecs;
276 int num_codecs = dev->devtype->num_codecs;
277 unsigned int w, h;
278 int k;
279
280 if (codec) {
281 w = codec->max_w;
282 h = codec->max_h;
283 } else {
284 for (k = 0, w = 0, h = 0; k < num_codecs; k++) {
285 w = max(w, codecs[k].max_w);
286 h = max(h, codecs[k].max_h);
287 }
288 }
289
290 if (max_w)
291 *max_w = w;
292 if (max_h)
293 *max_h = h;
294 }
295
296 const struct coda_video_device *to_coda_video_device(struct video_device *vdev)
297 {
298 struct coda_dev *dev = video_get_drvdata(vdev);
299 unsigned int i = vdev - dev->vfd;
300
301 if (i >= dev->devtype->num_vdevs)
302 return NULL;
303
304 return dev->devtype->vdevs[i];
305 }
306
307 const char *coda_product_name(int product)
308 {
309 static char buf[9];
310
311 switch (product) {
312 case CODA_DX6:
313 return "CodaDx6";
314 case CODA_7541:
315 return "CODA7541";
316 case CODA_960:
317 return "CODA960";
318 default:
319 snprintf(buf, sizeof(buf), "(0x%04x)", product);
320 return buf;
321 }
322 }
323
324 /*
325 * V4L2 ioctl() operations.
326 */
327 static int coda_querycap(struct file *file, void *priv,
328 struct v4l2_capability *cap)
329 {
330 struct coda_ctx *ctx = fh_to_ctx(priv);
331
332 strlcpy(cap->driver, CODA_NAME, sizeof(cap->driver));
333 strlcpy(cap->card, coda_product_name(ctx->dev->devtype->product),
334 sizeof(cap->card));
335 strlcpy(cap->bus_info, "platform:" CODA_NAME, sizeof(cap->bus_info));
336 cap->device_caps = V4L2_CAP_VIDEO_M2M | V4L2_CAP_STREAMING;
337 cap->capabilities = cap->device_caps | V4L2_CAP_DEVICE_CAPS;
338
339 return 0;
340 }
341
342 static int coda_enum_fmt(struct file *file, void *priv,
343 struct v4l2_fmtdesc *f)
344 {
345 struct video_device *vdev = video_devdata(file);
346 const struct coda_video_device *cvd = to_coda_video_device(vdev);
347 const u32 *formats;
348
349 if (f->type == V4L2_BUF_TYPE_VIDEO_OUTPUT)
350 formats = cvd->src_formats;
351 else if (f->type == V4L2_BUF_TYPE_VIDEO_CAPTURE)
352 formats = cvd->dst_formats;
353 else
354 return -EINVAL;
355
356 if (f->index >= CODA_MAX_FORMATS || formats[f->index] == 0)
357 return -EINVAL;
358
359 f->pixelformat = formats[f->index];
360
361 return 0;
362 }
363
364 static int coda_g_fmt(struct file *file, void *priv,
365 struct v4l2_format *f)
366 {
367 struct coda_q_data *q_data;
368 struct coda_ctx *ctx = fh_to_ctx(priv);
369
370 q_data = get_q_data(ctx, f->type);
371 if (!q_data)
372 return -EINVAL;
373
374 f->fmt.pix.field = V4L2_FIELD_NONE;
375 f->fmt.pix.pixelformat = q_data->fourcc;
376 f->fmt.pix.width = q_data->width;
377 f->fmt.pix.height = q_data->height;
378 f->fmt.pix.bytesperline = q_data->bytesperline;
379
380 f->fmt.pix.sizeimage = q_data->sizeimage;
381 if (f->fmt.pix.pixelformat == V4L2_PIX_FMT_JPEG)
382 f->fmt.pix.colorspace = V4L2_COLORSPACE_JPEG;
383 else
384 f->fmt.pix.colorspace = ctx->colorspace;
385
386 return 0;
387 }
388
389 static int coda_try_pixelformat(struct coda_ctx *ctx, struct v4l2_format *f)
390 {
391 struct coda_q_data *q_data;
392 const u32 *formats;
393 int i;
394
395 if (f->type == V4L2_BUF_TYPE_VIDEO_OUTPUT)
396 formats = ctx->cvd->src_formats;
397 else if (f->type == V4L2_BUF_TYPE_VIDEO_CAPTURE)
398 formats = ctx->cvd->dst_formats;
399 else
400 return -EINVAL;
401
402 for (i = 0; i < CODA_MAX_FORMATS; i++) {
403 if (formats[i] == f->fmt.pix.pixelformat) {
404 f->fmt.pix.pixelformat = formats[i];
405 return 0;
406 }
407 }
408
409 /* Fall back to currently set pixelformat */
410 q_data = get_q_data(ctx, f->type);
411 f->fmt.pix.pixelformat = q_data->fourcc;
412
413 return 0;
414 }
415
416 static unsigned int coda_estimate_sizeimage(struct coda_ctx *ctx, u32 sizeimage,
417 u32 width, u32 height)
418 {
419 /*
420 * This is a rough estimate for sensible compressed buffer
421 * sizes (between 1 and 16 bits per pixel). This could be
422 * improved by better format specific worst case estimates.
423 */
424 return round_up(clamp(sizeimage, width * height / 8,
425 width * height * 2), PAGE_SIZE);
426 }
427
428 static int coda_try_fmt(struct coda_ctx *ctx, const struct coda_codec *codec,
429 struct v4l2_format *f)
430 {
431 struct coda_dev *dev = ctx->dev;
432 unsigned int max_w, max_h;
433 enum v4l2_field field;
434
435 field = f->fmt.pix.field;
436 if (field == V4L2_FIELD_ANY)
437 field = V4L2_FIELD_NONE;
438 else if (V4L2_FIELD_NONE != field)
439 return -EINVAL;
440
441 /* V4L2 specification suggests the driver corrects the format struct
442 * if any of the dimensions is unsupported */
443 f->fmt.pix.field = field;
444
445 coda_get_max_dimensions(dev, codec, &max_w, &max_h);
446 v4l_bound_align_image(&f->fmt.pix.width, MIN_W, max_w, W_ALIGN,
447 &f->fmt.pix.height, MIN_H, max_h, H_ALIGN,
448 S_ALIGN);
449
450 switch (f->fmt.pix.pixelformat) {
451 case V4L2_PIX_FMT_NV12:
452 case V4L2_PIX_FMT_YUV420:
453 case V4L2_PIX_FMT_YVU420:
454 /*
455 * Frame stride must be at least multiple of 8,
456 * but multiple of 16 for h.264 or JPEG 4:2:x
457 */
458 f->fmt.pix.bytesperline = round_up(f->fmt.pix.width, 16);
459 f->fmt.pix.sizeimage = f->fmt.pix.bytesperline *
460 f->fmt.pix.height * 3 / 2;
461 break;
462 case V4L2_PIX_FMT_YUV422P:
463 f->fmt.pix.bytesperline = round_up(f->fmt.pix.width, 16);
464 f->fmt.pix.sizeimage = f->fmt.pix.bytesperline *
465 f->fmt.pix.height * 2;
466 break;
467 case V4L2_PIX_FMT_JPEG:
468 f->fmt.pix.colorspace = V4L2_COLORSPACE_JPEG;
469 /* fallthrough */
470 case V4L2_PIX_FMT_H264:
471 case V4L2_PIX_FMT_MPEG4:
472 f->fmt.pix.bytesperline = 0;
473 f->fmt.pix.sizeimage = coda_estimate_sizeimage(ctx,
474 f->fmt.pix.sizeimage,
475 f->fmt.pix.width,
476 f->fmt.pix.height);
477 break;
478 default:
479 BUG();
480 }
481
482 return 0;
483 }
484
485 static int coda_try_fmt_vid_cap(struct file *file, void *priv,
486 struct v4l2_format *f)
487 {
488 struct coda_ctx *ctx = fh_to_ctx(priv);
489 const struct coda_q_data *q_data_src;
490 const struct coda_codec *codec;
491 struct vb2_queue *src_vq;
492 int ret;
493
494 ret = coda_try_pixelformat(ctx, f);
495 if (ret < 0)
496 return ret;
497
498 q_data_src = get_q_data(ctx, V4L2_BUF_TYPE_VIDEO_OUTPUT);
499
500 /*
501 * If the source format is already fixed, only allow the same output
502 * resolution
503 */
504 src_vq = v4l2_m2m_get_vq(ctx->fh.m2m_ctx, V4L2_BUF_TYPE_VIDEO_OUTPUT);
505 if (vb2_is_streaming(src_vq)) {
506 f->fmt.pix.width = q_data_src->width;
507 f->fmt.pix.height = q_data_src->height;
508 }
509
510 f->fmt.pix.colorspace = ctx->colorspace;
511
512 q_data_src = get_q_data(ctx, V4L2_BUF_TYPE_VIDEO_OUTPUT);
513 codec = coda_find_codec(ctx->dev, q_data_src->fourcc,
514 f->fmt.pix.pixelformat);
515 if (!codec)
516 return -EINVAL;
517
518 ret = coda_try_fmt(ctx, codec, f);
519 if (ret < 0)
520 return ret;
521
522 /* The h.264 decoder only returns complete 16x16 macroblocks */
523 if (codec && codec->src_fourcc == V4L2_PIX_FMT_H264) {
524 f->fmt.pix.width = f->fmt.pix.width;
525 f->fmt.pix.height = round_up(f->fmt.pix.height, 16);
526 f->fmt.pix.bytesperline = round_up(f->fmt.pix.width, 16);
527 f->fmt.pix.sizeimage = f->fmt.pix.bytesperline *
528 f->fmt.pix.height * 3 / 2;
529 }
530
531 return 0;
532 }
533
534 static int coda_try_fmt_vid_out(struct file *file, void *priv,
535 struct v4l2_format *f)
536 {
537 struct coda_ctx *ctx = fh_to_ctx(priv);
538 struct coda_dev *dev = ctx->dev;
539 const struct coda_q_data *q_data_dst;
540 const struct coda_codec *codec;
541 int ret;
542
543 ret = coda_try_pixelformat(ctx, f);
544 if (ret < 0)
545 return ret;
546
547 switch (f->fmt.pix.colorspace) {
548 case V4L2_COLORSPACE_REC709:
549 case V4L2_COLORSPACE_JPEG:
550 break;
551 default:
552 if (f->fmt.pix.pixelformat == V4L2_PIX_FMT_JPEG)
553 f->fmt.pix.colorspace = V4L2_COLORSPACE_JPEG;
554 else
555 f->fmt.pix.colorspace = V4L2_COLORSPACE_REC709;
556 }
557
558 q_data_dst = get_q_data(ctx, V4L2_BUF_TYPE_VIDEO_CAPTURE);
559 codec = coda_find_codec(dev, f->fmt.pix.pixelformat, q_data_dst->fourcc);
560
561 return coda_try_fmt(ctx, codec, f);
562 }
563
564 static int coda_s_fmt(struct coda_ctx *ctx, struct v4l2_format *f)
565 {
566 struct coda_q_data *q_data;
567 struct vb2_queue *vq;
568
569 vq = v4l2_m2m_get_vq(ctx->fh.m2m_ctx, f->type);
570 if (!vq)
571 return -EINVAL;
572
573 q_data = get_q_data(ctx, f->type);
574 if (!q_data)
575 return -EINVAL;
576
577 if (vb2_is_busy(vq)) {
578 v4l2_err(&ctx->dev->v4l2_dev, "%s queue busy\n", __func__);
579 return -EBUSY;
580 }
581
582 q_data->fourcc = f->fmt.pix.pixelformat;
583 q_data->width = f->fmt.pix.width;
584 q_data->height = f->fmt.pix.height;
585 q_data->bytesperline = f->fmt.pix.bytesperline;
586 q_data->sizeimage = f->fmt.pix.sizeimage;
587 q_data->rect.left = 0;
588 q_data->rect.top = 0;
589 q_data->rect.width = f->fmt.pix.width;
590 q_data->rect.height = f->fmt.pix.height;
591
592 switch (f->fmt.pix.pixelformat) {
593 case V4L2_PIX_FMT_NV12:
594 if (f->type == V4L2_BUF_TYPE_VIDEO_OUTPUT) {
595 ctx->tiled_map_type = GDI_TILED_FRAME_MB_RASTER_MAP;
596 if (!disable_tiling)
597 break;
598 }
599 /* else fall through */
600 case V4L2_PIX_FMT_YUV420:
601 case V4L2_PIX_FMT_YVU420:
602 ctx->tiled_map_type = GDI_LINEAR_FRAME_MAP;
603 break;
604 default:
605 break;
606 }
607
608 v4l2_dbg(1, coda_debug, &ctx->dev->v4l2_dev,
609 "Setting format for type %d, wxh: %dx%d, fmt: %d\n",
610 f->type, q_data->width, q_data->height, q_data->fourcc);
611
612 return 0;
613 }
614
615 static int coda_s_fmt_vid_cap(struct file *file, void *priv,
616 struct v4l2_format *f)
617 {
618 struct coda_ctx *ctx = fh_to_ctx(priv);
619 int ret;
620
621 ret = coda_try_fmt_vid_cap(file, priv, f);
622 if (ret)
623 return ret;
624
625 return coda_s_fmt(ctx, f);
626 }
627
628 static int coda_s_fmt_vid_out(struct file *file, void *priv,
629 struct v4l2_format *f)
630 {
631 struct coda_ctx *ctx = fh_to_ctx(priv);
632 struct v4l2_format f_cap;
633 int ret;
634
635 ret = coda_try_fmt_vid_out(file, priv, f);
636 if (ret)
637 return ret;
638
639 ret = coda_s_fmt(ctx, f);
640 if (ret)
641 return ret;
642
643 ctx->colorspace = f->fmt.pix.colorspace;
644
645 memset(&f_cap, 0, sizeof(f_cap));
646 f_cap.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
647 coda_g_fmt(file, priv, &f_cap);
648 f_cap.fmt.pix.width = f->fmt.pix.width;
649 f_cap.fmt.pix.height = f->fmt.pix.height;
650
651 ret = coda_try_fmt_vid_cap(file, priv, &f_cap);
652 if (ret)
653 return ret;
654
655 return coda_s_fmt(ctx, &f_cap);
656 }
657
658 static int coda_reqbufs(struct file *file, void *priv,
659 struct v4l2_requestbuffers *rb)
660 {
661 struct coda_ctx *ctx = fh_to_ctx(priv);
662 int ret;
663
664 ret = v4l2_m2m_reqbufs(file, ctx->fh.m2m_ctx, rb);
665 if (ret)
666 return ret;
667
668 /*
669 * Allow to allocate instance specific per-context buffers, such as
670 * bitstream ringbuffer, slice buffer, work buffer, etc. if needed.
671 */
672 if (rb->type == V4L2_BUF_TYPE_VIDEO_OUTPUT && ctx->ops->reqbufs)
673 return ctx->ops->reqbufs(ctx, rb);
674
675 return 0;
676 }
677
678 static int coda_qbuf(struct file *file, void *priv,
679 struct v4l2_buffer *buf)
680 {
681 struct coda_ctx *ctx = fh_to_ctx(priv);
682
683 return v4l2_m2m_qbuf(file, ctx->fh.m2m_ctx, buf);
684 }
685
686 static bool coda_buf_is_end_of_stream(struct coda_ctx *ctx,
687 struct vb2_v4l2_buffer *buf)
688 {
689 struct vb2_queue *src_vq;
690
691 src_vq = v4l2_m2m_get_vq(ctx->fh.m2m_ctx, V4L2_BUF_TYPE_VIDEO_OUTPUT);
692
693 return ((ctx->bit_stream_param & CODA_BIT_STREAM_END_FLAG) &&
694 (buf->sequence == (ctx->qsequence - 1)));
695 }
696
697 void coda_m2m_buf_done(struct coda_ctx *ctx, struct vb2_v4l2_buffer *buf,
698 enum vb2_buffer_state state)
699 {
700 const struct v4l2_event eos_event = {
701 .type = V4L2_EVENT_EOS
702 };
703
704 if (coda_buf_is_end_of_stream(ctx, buf)) {
705 buf->flags |= V4L2_BUF_FLAG_LAST;
706
707 v4l2_event_queue_fh(&ctx->fh, &eos_event);
708 }
709
710 v4l2_m2m_buf_done(buf, state);
711 }
712
713 static int coda_g_selection(struct file *file, void *fh,
714 struct v4l2_selection *s)
715 {
716 struct coda_ctx *ctx = fh_to_ctx(fh);
717 struct coda_q_data *q_data;
718 struct v4l2_rect r, *rsel;
719
720 q_data = get_q_data(ctx, s->type);
721 if (!q_data)
722 return -EINVAL;
723
724 r.left = 0;
725 r.top = 0;
726 r.width = q_data->width;
727 r.height = q_data->height;
728 rsel = &q_data->rect;
729
730 switch (s->target) {
731 case V4L2_SEL_TGT_CROP_DEFAULT:
732 case V4L2_SEL_TGT_CROP_BOUNDS:
733 rsel = &r;
734 /* fallthrough */
735 case V4L2_SEL_TGT_CROP:
736 if (s->type != V4L2_BUF_TYPE_VIDEO_OUTPUT)
737 return -EINVAL;
738 break;
739 case V4L2_SEL_TGT_COMPOSE_BOUNDS:
740 case V4L2_SEL_TGT_COMPOSE_PADDED:
741 rsel = &r;
742 /* fallthrough */
743 case V4L2_SEL_TGT_COMPOSE:
744 case V4L2_SEL_TGT_COMPOSE_DEFAULT:
745 if (s->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
746 return -EINVAL;
747 break;
748 default:
749 return -EINVAL;
750 }
751
752 s->r = *rsel;
753
754 return 0;
755 }
756
757 static int coda_try_decoder_cmd(struct file *file, void *fh,
758 struct v4l2_decoder_cmd *dc)
759 {
760 if (dc->cmd != V4L2_DEC_CMD_STOP)
761 return -EINVAL;
762
763 if (dc->flags & V4L2_DEC_CMD_STOP_TO_BLACK)
764 return -EINVAL;
765
766 if (!(dc->flags & V4L2_DEC_CMD_STOP_IMMEDIATELY) && (dc->stop.pts != 0))
767 return -EINVAL;
768
769 return 0;
770 }
771
772 static int coda_decoder_cmd(struct file *file, void *fh,
773 struct v4l2_decoder_cmd *dc)
774 {
775 struct coda_ctx *ctx = fh_to_ctx(fh);
776 int ret;
777
778 ret = coda_try_decoder_cmd(file, fh, dc);
779 if (ret < 0)
780 return ret;
781
782 /* Ignore decoder stop command silently in encoder context */
783 if (ctx->inst_type != CODA_INST_DECODER)
784 return 0;
785
786 /* Set the stream-end flag on this context */
787 coda_bit_stream_end_flag(ctx);
788 ctx->hold = false;
789 v4l2_m2m_try_schedule(ctx->fh.m2m_ctx);
790
791 return 0;
792 }
793
794 static int coda_g_parm(struct file *file, void *fh, struct v4l2_streamparm *a)
795 {
796 struct coda_ctx *ctx = fh_to_ctx(fh);
797 struct v4l2_fract *tpf;
798
799 if (a->type != V4L2_BUF_TYPE_VIDEO_OUTPUT)
800 return -EINVAL;
801
802 a->parm.output.capability = V4L2_CAP_TIMEPERFRAME;
803 tpf = &a->parm.output.timeperframe;
804 tpf->denominator = ctx->params.framerate & CODA_FRATE_RES_MASK;
805 tpf->numerator = 1 + (ctx->params.framerate >>
806 CODA_FRATE_DIV_OFFSET);
807
808 return 0;
809 }
810
811 /*
812 * Approximate timeperframe v4l2_fract with values that can be written
813 * into the 16-bit CODA_FRATE_DIV and CODA_FRATE_RES fields.
814 */
815 static void coda_approximate_timeperframe(struct v4l2_fract *timeperframe)
816 {
817 struct v4l2_fract s = *timeperframe;
818 struct v4l2_fract f0;
819 struct v4l2_fract f1 = { 1, 0 };
820 struct v4l2_fract f2 = { 0, 1 };
821 unsigned int i, div, s_denominator;
822
823 /* Lower bound is 1/65535 */
824 if (s.numerator == 0 || s.denominator / s.numerator > 65535) {
825 timeperframe->numerator = 1;
826 timeperframe->denominator = 65535;
827 return;
828 }
829
830 /* Upper bound is 65536/1, map everything above to infinity */
831 if (s.denominator == 0 || s.numerator / s.denominator > 65536) {
832 timeperframe->numerator = 1;
833 timeperframe->denominator = 0;
834 return;
835 }
836
837 /* Reduce fraction to lowest terms */
838 div = gcd(s.numerator, s.denominator);
839 if (div > 1) {
840 s.numerator /= div;
841 s.denominator /= div;
842 }
843
844 if (s.numerator <= 65536 && s.denominator < 65536) {
845 *timeperframe = s;
846 return;
847 }
848
849 /* Find successive convergents from continued fraction expansion */
850 while (f2.numerator <= 65536 && f2.denominator < 65536) {
851 f0 = f1;
852 f1 = f2;
853
854 /* Stop when f2 exactly equals timeperframe */
855 if (s.numerator == 0)
856 break;
857
858 i = s.denominator / s.numerator;
859
860 f2.numerator = f0.numerator + i * f1.numerator;
861 f2.denominator = f0.denominator + i * f2.denominator;
862
863 s_denominator = s.numerator;
864 s.numerator = s.denominator % s.numerator;
865 s.denominator = s_denominator;
866 }
867
868 *timeperframe = f1;
869 }
870
871 static uint32_t coda_timeperframe_to_frate(struct v4l2_fract *timeperframe)
872 {
873 return ((timeperframe->numerator - 1) << CODA_FRATE_DIV_OFFSET) |
874 timeperframe->denominator;
875 }
876
877 static int coda_s_parm(struct file *file, void *fh, struct v4l2_streamparm *a)
878 {
879 struct coda_ctx *ctx = fh_to_ctx(fh);
880 struct v4l2_fract *tpf;
881
882 if (a->type != V4L2_BUF_TYPE_VIDEO_OUTPUT)
883 return -EINVAL;
884
885 tpf = &a->parm.output.timeperframe;
886 coda_approximate_timeperframe(tpf);
887 ctx->params.framerate = coda_timeperframe_to_frate(tpf);
888
889 return 0;
890 }
891
892 static int coda_subscribe_event(struct v4l2_fh *fh,
893 const struct v4l2_event_subscription *sub)
894 {
895 switch (sub->type) {
896 case V4L2_EVENT_EOS:
897 return v4l2_event_subscribe(fh, sub, 0, NULL);
898 default:
899 return v4l2_ctrl_subscribe_event(fh, sub);
900 }
901 }
902
903 static const struct v4l2_ioctl_ops coda_ioctl_ops = {
904 .vidioc_querycap = coda_querycap,
905
906 .vidioc_enum_fmt_vid_cap = coda_enum_fmt,
907 .vidioc_g_fmt_vid_cap = coda_g_fmt,
908 .vidioc_try_fmt_vid_cap = coda_try_fmt_vid_cap,
909 .vidioc_s_fmt_vid_cap = coda_s_fmt_vid_cap,
910
911 .vidioc_enum_fmt_vid_out = coda_enum_fmt,
912 .vidioc_g_fmt_vid_out = coda_g_fmt,
913 .vidioc_try_fmt_vid_out = coda_try_fmt_vid_out,
914 .vidioc_s_fmt_vid_out = coda_s_fmt_vid_out,
915
916 .vidioc_reqbufs = coda_reqbufs,
917 .vidioc_querybuf = v4l2_m2m_ioctl_querybuf,
918
919 .vidioc_qbuf = coda_qbuf,
920 .vidioc_expbuf = v4l2_m2m_ioctl_expbuf,
921 .vidioc_dqbuf = v4l2_m2m_ioctl_dqbuf,
922 .vidioc_create_bufs = v4l2_m2m_ioctl_create_bufs,
923
924 .vidioc_streamon = v4l2_m2m_ioctl_streamon,
925 .vidioc_streamoff = v4l2_m2m_ioctl_streamoff,
926
927 .vidioc_g_selection = coda_g_selection,
928
929 .vidioc_try_decoder_cmd = coda_try_decoder_cmd,
930 .vidioc_decoder_cmd = coda_decoder_cmd,
931
932 .vidioc_g_parm = coda_g_parm,
933 .vidioc_s_parm = coda_s_parm,
934
935 .vidioc_subscribe_event = coda_subscribe_event,
936 .vidioc_unsubscribe_event = v4l2_event_unsubscribe,
937 };
938
939 /*
940 * Mem-to-mem operations.
941 */
942
943 static void coda_device_run(void *m2m_priv)
944 {
945 struct coda_ctx *ctx = m2m_priv;
946 struct coda_dev *dev = ctx->dev;
947
948 queue_work(dev->workqueue, &ctx->pic_run_work);
949 }
950
951 static void coda_pic_run_work(struct work_struct *work)
952 {
953 struct coda_ctx *ctx = container_of(work, struct coda_ctx, pic_run_work);
954 struct coda_dev *dev = ctx->dev;
955 int ret;
956
957 mutex_lock(&ctx->buffer_mutex);
958 mutex_lock(&dev->coda_mutex);
959
960 ret = ctx->ops->prepare_run(ctx);
961 if (ret < 0 && ctx->inst_type == CODA_INST_DECODER) {
962 mutex_unlock(&dev->coda_mutex);
963 mutex_unlock(&ctx->buffer_mutex);
964 /* job_finish scheduled by prepare_decode */
965 return;
966 }
967
968 if (!wait_for_completion_timeout(&ctx->completion,
969 msecs_to_jiffies(1000))) {
970 dev_err(&dev->plat_dev->dev, "CODA PIC_RUN timeout\n");
971
972 ctx->hold = true;
973
974 coda_hw_reset(ctx);
975 } else if (!ctx->aborting) {
976 ctx->ops->finish_run(ctx);
977 }
978
979 if ((ctx->aborting || (!ctx->streamon_cap && !ctx->streamon_out)) &&
980 ctx->ops->seq_end_work)
981 queue_work(dev->workqueue, &ctx->seq_end_work);
982
983 mutex_unlock(&dev->coda_mutex);
984 mutex_unlock(&ctx->buffer_mutex);
985
986 v4l2_m2m_job_finish(ctx->dev->m2m_dev, ctx->fh.m2m_ctx);
987 }
988
989 static int coda_job_ready(void *m2m_priv)
990 {
991 struct coda_ctx *ctx = m2m_priv;
992 int src_bufs = v4l2_m2m_num_src_bufs_ready(ctx->fh.m2m_ctx);
993
994 /*
995 * For both 'P' and 'key' frame cases 1 picture
996 * and 1 frame are needed. In the decoder case,
997 * the compressed frame can be in the bitstream.
998 */
999 if (!src_bufs && ctx->inst_type != CODA_INST_DECODER) {
1000 v4l2_dbg(1, coda_debug, &ctx->dev->v4l2_dev,
1001 "not ready: not enough video buffers.\n");
1002 return 0;
1003 }
1004
1005 if (!v4l2_m2m_num_dst_bufs_ready(ctx->fh.m2m_ctx)) {
1006 v4l2_dbg(1, coda_debug, &ctx->dev->v4l2_dev,
1007 "not ready: not enough video capture buffers.\n");
1008 return 0;
1009 }
1010
1011 if (ctx->inst_type == CODA_INST_DECODER && ctx->use_bit) {
1012 bool stream_end = ctx->bit_stream_param &
1013 CODA_BIT_STREAM_END_FLAG;
1014 int num_metas = ctx->num_metas;
1015
1016 if (ctx->hold && !src_bufs) {
1017 v4l2_dbg(1, coda_debug, &ctx->dev->v4l2_dev,
1018 "%d: not ready: on hold for more buffers.\n",
1019 ctx->idx);
1020 return 0;
1021 }
1022
1023 if (!stream_end && (num_metas + src_bufs) < 2) {
1024 v4l2_dbg(1, coda_debug, &ctx->dev->v4l2_dev,
1025 "%d: not ready: need 2 buffers available (%d, %d)\n",
1026 ctx->idx, num_metas, src_bufs);
1027 return 0;
1028 }
1029
1030
1031 if (!src_bufs && !stream_end &&
1032 (coda_get_bitstream_payload(ctx) < 512)) {
1033 v4l2_dbg(1, coda_debug, &ctx->dev->v4l2_dev,
1034 "%d: not ready: not enough bitstream data (%d).\n",
1035 ctx->idx, coda_get_bitstream_payload(ctx));
1036 return 0;
1037 }
1038 }
1039
1040 if (ctx->aborting) {
1041 v4l2_dbg(1, coda_debug, &ctx->dev->v4l2_dev,
1042 "not ready: aborting\n");
1043 return 0;
1044 }
1045
1046 v4l2_dbg(1, coda_debug, &ctx->dev->v4l2_dev,
1047 "job ready\n");
1048
1049 return 1;
1050 }
1051
1052 static void coda_job_abort(void *priv)
1053 {
1054 struct coda_ctx *ctx = priv;
1055
1056 ctx->aborting = 1;
1057
1058 v4l2_dbg(1, coda_debug, &ctx->dev->v4l2_dev,
1059 "Aborting task\n");
1060 }
1061
1062 static void coda_lock(void *m2m_priv)
1063 {
1064 struct coda_ctx *ctx = m2m_priv;
1065 struct coda_dev *pcdev = ctx->dev;
1066
1067 mutex_lock(&pcdev->dev_mutex);
1068 }
1069
1070 static void coda_unlock(void *m2m_priv)
1071 {
1072 struct coda_ctx *ctx = m2m_priv;
1073 struct coda_dev *pcdev = ctx->dev;
1074
1075 mutex_unlock(&pcdev->dev_mutex);
1076 }
1077
1078 static const struct v4l2_m2m_ops coda_m2m_ops = {
1079 .device_run = coda_device_run,
1080 .job_ready = coda_job_ready,
1081 .job_abort = coda_job_abort,
1082 .lock = coda_lock,
1083 .unlock = coda_unlock,
1084 };
1085
1086 static void set_default_params(struct coda_ctx *ctx)
1087 {
1088 unsigned int max_w, max_h, usize, csize;
1089
1090 ctx->codec = coda_find_codec(ctx->dev, ctx->cvd->src_formats[0],
1091 ctx->cvd->dst_formats[0]);
1092 max_w = min(ctx->codec->max_w, 1920U);
1093 max_h = min(ctx->codec->max_h, 1088U);
1094 usize = max_w * max_h * 3 / 2;
1095 csize = coda_estimate_sizeimage(ctx, usize, max_w, max_h);
1096
1097 ctx->params.codec_mode = ctx->codec->mode;
1098 ctx->colorspace = V4L2_COLORSPACE_REC709;
1099 ctx->params.framerate = 30;
1100
1101 /* Default formats for output and input queues */
1102 ctx->q_data[V4L2_M2M_SRC].fourcc = ctx->cvd->src_formats[0];
1103 ctx->q_data[V4L2_M2M_DST].fourcc = ctx->cvd->dst_formats[0];
1104 ctx->q_data[V4L2_M2M_SRC].width = max_w;
1105 ctx->q_data[V4L2_M2M_SRC].height = max_h;
1106 ctx->q_data[V4L2_M2M_DST].width = max_w;
1107 ctx->q_data[V4L2_M2M_DST].height = max_h;
1108 if (ctx->codec->src_fourcc == V4L2_PIX_FMT_YUV420) {
1109 ctx->q_data[V4L2_M2M_SRC].bytesperline = max_w;
1110 ctx->q_data[V4L2_M2M_SRC].sizeimage = usize;
1111 ctx->q_data[V4L2_M2M_DST].bytesperline = 0;
1112 ctx->q_data[V4L2_M2M_DST].sizeimage = csize;
1113 } else {
1114 ctx->q_data[V4L2_M2M_SRC].bytesperline = 0;
1115 ctx->q_data[V4L2_M2M_SRC].sizeimage = csize;
1116 ctx->q_data[V4L2_M2M_DST].bytesperline = max_w;
1117 ctx->q_data[V4L2_M2M_DST].sizeimage = usize;
1118 }
1119 ctx->q_data[V4L2_M2M_SRC].rect.width = max_w;
1120 ctx->q_data[V4L2_M2M_SRC].rect.height = max_h;
1121 ctx->q_data[V4L2_M2M_DST].rect.width = max_w;
1122 ctx->q_data[V4L2_M2M_DST].rect.height = max_h;
1123
1124 /*
1125 * Since the RBC2AXI logic only supports a single chroma plane,
1126 * macroblock tiling only works for to NV12 pixel format.
1127 */
1128 ctx->tiled_map_type = GDI_LINEAR_FRAME_MAP;
1129 }
1130
1131 /*
1132 * Queue operations
1133 */
1134 static int coda_queue_setup(struct vb2_queue *vq,
1135 const struct v4l2_format *fmt,
1136 unsigned int *nbuffers, unsigned int *nplanes,
1137 unsigned int sizes[], void *alloc_ctxs[])
1138 {
1139 struct coda_ctx *ctx = vb2_get_drv_priv(vq);
1140 struct coda_q_data *q_data;
1141 unsigned int size;
1142
1143 q_data = get_q_data(ctx, vq->type);
1144 size = q_data->sizeimage;
1145
1146 *nplanes = 1;
1147 sizes[0] = size;
1148
1149 /* Set to vb2-dma-contig allocator context, ignored by vb2-vmalloc */
1150 alloc_ctxs[0] = ctx->dev->alloc_ctx;
1151
1152 v4l2_dbg(1, coda_debug, &ctx->dev->v4l2_dev,
1153 "get %d buffer(s) of size %d each.\n", *nbuffers, size);
1154
1155 return 0;
1156 }
1157
1158 static int coda_buf_prepare(struct vb2_buffer *vb)
1159 {
1160 struct coda_ctx *ctx = vb2_get_drv_priv(vb->vb2_queue);
1161 struct coda_q_data *q_data;
1162
1163 q_data = get_q_data(ctx, vb->vb2_queue->type);
1164
1165 if (vb2_plane_size(vb, 0) < q_data->sizeimage) {
1166 v4l2_warn(&ctx->dev->v4l2_dev,
1167 "%s data will not fit into plane (%lu < %lu)\n",
1168 __func__, vb2_plane_size(vb, 0),
1169 (long)q_data->sizeimage);
1170 return -EINVAL;
1171 }
1172
1173 return 0;
1174 }
1175
1176 static void coda_buf_queue(struct vb2_buffer *vb)
1177 {
1178 struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
1179 struct coda_ctx *ctx = vb2_get_drv_priv(vb->vb2_queue);
1180 struct vb2_queue *vq = vb->vb2_queue;
1181 struct coda_q_data *q_data;
1182
1183 q_data = get_q_data(ctx, vb->vb2_queue->type);
1184
1185 /*
1186 * In the decoder case, immediately try to copy the buffer into the
1187 * bitstream ringbuffer and mark it as ready to be dequeued.
1188 */
1189 if (ctx->bitstream.size && vq->type == V4L2_BUF_TYPE_VIDEO_OUTPUT) {
1190 /*
1191 * For backwards compatibility, queuing an empty buffer marks
1192 * the stream end
1193 */
1194 if (vb2_get_plane_payload(vb, 0) == 0)
1195 coda_bit_stream_end_flag(ctx);
1196 mutex_lock(&ctx->bitstream_mutex);
1197 v4l2_m2m_buf_queue(ctx->fh.m2m_ctx, vbuf);
1198 if (vb2_is_streaming(vb->vb2_queue))
1199 coda_fill_bitstream(ctx, true);
1200 mutex_unlock(&ctx->bitstream_mutex);
1201 } else {
1202 v4l2_m2m_buf_queue(ctx->fh.m2m_ctx, vbuf);
1203 }
1204 }
1205
1206 int coda_alloc_aux_buf(struct coda_dev *dev, struct coda_aux_buf *buf,
1207 size_t size, const char *name, struct dentry *parent)
1208 {
1209 buf->vaddr = dma_alloc_coherent(&dev->plat_dev->dev, size, &buf->paddr,
1210 GFP_KERNEL);
1211 if (!buf->vaddr) {
1212 v4l2_err(&dev->v4l2_dev,
1213 "Failed to allocate %s buffer of size %u\n",
1214 name, size);
1215 return -ENOMEM;
1216 }
1217
1218 buf->size = size;
1219
1220 if (name && parent) {
1221 buf->blob.data = buf->vaddr;
1222 buf->blob.size = size;
1223 buf->dentry = debugfs_create_blob(name, 0644, parent,
1224 &buf->blob);
1225 if (!buf->dentry)
1226 dev_warn(&dev->plat_dev->dev,
1227 "failed to create debugfs entry %s\n", name);
1228 }
1229
1230 return 0;
1231 }
1232
1233 void coda_free_aux_buf(struct coda_dev *dev,
1234 struct coda_aux_buf *buf)
1235 {
1236 if (buf->vaddr) {
1237 dma_free_coherent(&dev->plat_dev->dev, buf->size,
1238 buf->vaddr, buf->paddr);
1239 buf->vaddr = NULL;
1240 buf->size = 0;
1241 debugfs_remove(buf->dentry);
1242 buf->dentry = NULL;
1243 }
1244 }
1245
1246 static int coda_start_streaming(struct vb2_queue *q, unsigned int count)
1247 {
1248 struct coda_ctx *ctx = vb2_get_drv_priv(q);
1249 struct v4l2_device *v4l2_dev = &ctx->dev->v4l2_dev;
1250 struct coda_q_data *q_data_src, *q_data_dst;
1251 struct vb2_v4l2_buffer *buf;
1252 int ret = 0;
1253
1254 q_data_src = get_q_data(ctx, V4L2_BUF_TYPE_VIDEO_OUTPUT);
1255 if (q->type == V4L2_BUF_TYPE_VIDEO_OUTPUT) {
1256 if (ctx->inst_type == CODA_INST_DECODER && ctx->use_bit) {
1257 /* copy the buffers that were queued before streamon */
1258 mutex_lock(&ctx->bitstream_mutex);
1259 coda_fill_bitstream(ctx, false);
1260 mutex_unlock(&ctx->bitstream_mutex);
1261
1262 if (coda_get_bitstream_payload(ctx) < 512) {
1263 ret = -EINVAL;
1264 goto err;
1265 }
1266 } else {
1267 if (count < 1) {
1268 ret = -EINVAL;
1269 goto err;
1270 }
1271 }
1272
1273 ctx->streamon_out = 1;
1274 } else {
1275 if (count < 1) {
1276 ret = -EINVAL;
1277 goto err;
1278 }
1279
1280 ctx->streamon_cap = 1;
1281 }
1282
1283 /* Don't start the coda unless both queues are on */
1284 if (!(ctx->streamon_out & ctx->streamon_cap))
1285 return 0;
1286
1287 q_data_dst = get_q_data(ctx, V4L2_BUF_TYPE_VIDEO_CAPTURE);
1288 if ((q_data_src->width != q_data_dst->width &&
1289 round_up(q_data_src->width, 16) != q_data_dst->width) ||
1290 (q_data_src->height != q_data_dst->height &&
1291 round_up(q_data_src->height, 16) != q_data_dst->height)) {
1292 v4l2_err(v4l2_dev, "can't convert %dx%d to %dx%d\n",
1293 q_data_src->width, q_data_src->height,
1294 q_data_dst->width, q_data_dst->height);
1295 ret = -EINVAL;
1296 goto err;
1297 }
1298
1299 /* Allow BIT decoder device_run with no new buffers queued */
1300 if (ctx->inst_type == CODA_INST_DECODER && ctx->use_bit)
1301 v4l2_m2m_set_src_buffered(ctx->fh.m2m_ctx, true);
1302
1303 ctx->gopcounter = ctx->params.gop_size - 1;
1304
1305 ctx->codec = coda_find_codec(ctx->dev, q_data_src->fourcc,
1306 q_data_dst->fourcc);
1307 if (!ctx->codec) {
1308 v4l2_err(v4l2_dev, "couldn't tell instance type.\n");
1309 ret = -EINVAL;
1310 goto err;
1311 }
1312
1313 if (q_data_dst->fourcc == V4L2_PIX_FMT_JPEG)
1314 ctx->params.gop_size = 1;
1315 ctx->gopcounter = ctx->params.gop_size - 1;
1316
1317 ret = ctx->ops->start_streaming(ctx);
1318 if (ctx->inst_type == CODA_INST_DECODER) {
1319 if (ret == -EAGAIN)
1320 return 0;
1321 else if (ret < 0)
1322 goto err;
1323 }
1324
1325 return ret;
1326
1327 err:
1328 if (q->type == V4L2_BUF_TYPE_VIDEO_OUTPUT) {
1329 while ((buf = v4l2_m2m_src_buf_remove(ctx->fh.m2m_ctx)))
1330 v4l2_m2m_buf_done(buf, VB2_BUF_STATE_QUEUED);
1331 } else {
1332 while ((buf = v4l2_m2m_dst_buf_remove(ctx->fh.m2m_ctx)))
1333 v4l2_m2m_buf_done(buf, VB2_BUF_STATE_QUEUED);
1334 }
1335 return ret;
1336 }
1337
1338 static void coda_stop_streaming(struct vb2_queue *q)
1339 {
1340 struct coda_ctx *ctx = vb2_get_drv_priv(q);
1341 struct coda_dev *dev = ctx->dev;
1342 struct vb2_v4l2_buffer *buf;
1343 unsigned long flags;
1344 bool stop;
1345
1346 stop = ctx->streamon_out && ctx->streamon_cap;
1347
1348 if (q->type == V4L2_BUF_TYPE_VIDEO_OUTPUT) {
1349 v4l2_dbg(1, coda_debug, &dev->v4l2_dev,
1350 "%s: output\n", __func__);
1351 ctx->streamon_out = 0;
1352
1353 coda_bit_stream_end_flag(ctx);
1354
1355 ctx->qsequence = 0;
1356
1357 while ((buf = v4l2_m2m_src_buf_remove(ctx->fh.m2m_ctx)))
1358 v4l2_m2m_buf_done(buf, VB2_BUF_STATE_ERROR);
1359 } else {
1360 v4l2_dbg(1, coda_debug, &dev->v4l2_dev,
1361 "%s: capture\n", __func__);
1362 ctx->streamon_cap = 0;
1363
1364 ctx->osequence = 0;
1365 ctx->sequence_offset = 0;
1366
1367 while ((buf = v4l2_m2m_dst_buf_remove(ctx->fh.m2m_ctx)))
1368 v4l2_m2m_buf_done(buf, VB2_BUF_STATE_ERROR);
1369 }
1370
1371 if (stop) {
1372 struct coda_buffer_meta *meta;
1373
1374 if (ctx->ops->seq_end_work) {
1375 queue_work(dev->workqueue, &ctx->seq_end_work);
1376 flush_work(&ctx->seq_end_work);
1377 }
1378 spin_lock_irqsave(&ctx->buffer_meta_lock, flags);
1379 while (!list_empty(&ctx->buffer_meta_list)) {
1380 meta = list_first_entry(&ctx->buffer_meta_list,
1381 struct coda_buffer_meta, list);
1382 list_del(&meta->list);
1383 kfree(meta);
1384 }
1385 ctx->num_metas = 0;
1386 spin_unlock_irqrestore(&ctx->buffer_meta_lock, flags);
1387 kfifo_init(&ctx->bitstream_fifo,
1388 ctx->bitstream.vaddr, ctx->bitstream.size);
1389 ctx->runcounter = 0;
1390 ctx->aborting = 0;
1391 }
1392
1393 if (!ctx->streamon_out && !ctx->streamon_cap)
1394 ctx->bit_stream_param &= ~CODA_BIT_STREAM_END_FLAG;
1395 }
1396
1397 static const struct vb2_ops coda_qops = {
1398 .queue_setup = coda_queue_setup,
1399 .buf_prepare = coda_buf_prepare,
1400 .buf_queue = coda_buf_queue,
1401 .start_streaming = coda_start_streaming,
1402 .stop_streaming = coda_stop_streaming,
1403 .wait_prepare = vb2_ops_wait_prepare,
1404 .wait_finish = vb2_ops_wait_finish,
1405 };
1406
1407 static int coda_s_ctrl(struct v4l2_ctrl *ctrl)
1408 {
1409 struct coda_ctx *ctx =
1410 container_of(ctrl->handler, struct coda_ctx, ctrls);
1411
1412 v4l2_dbg(1, coda_debug, &ctx->dev->v4l2_dev,
1413 "s_ctrl: id = %d, val = %d\n", ctrl->id, ctrl->val);
1414
1415 switch (ctrl->id) {
1416 case V4L2_CID_HFLIP:
1417 if (ctrl->val)
1418 ctx->params.rot_mode |= CODA_MIR_HOR;
1419 else
1420 ctx->params.rot_mode &= ~CODA_MIR_HOR;
1421 break;
1422 case V4L2_CID_VFLIP:
1423 if (ctrl->val)
1424 ctx->params.rot_mode |= CODA_MIR_VER;
1425 else
1426 ctx->params.rot_mode &= ~CODA_MIR_VER;
1427 break;
1428 case V4L2_CID_MPEG_VIDEO_BITRATE:
1429 ctx->params.bitrate = ctrl->val / 1000;
1430 break;
1431 case V4L2_CID_MPEG_VIDEO_GOP_SIZE:
1432 ctx->params.gop_size = ctrl->val;
1433 break;
1434 case V4L2_CID_MPEG_VIDEO_H264_I_FRAME_QP:
1435 ctx->params.h264_intra_qp = ctrl->val;
1436 break;
1437 case V4L2_CID_MPEG_VIDEO_H264_P_FRAME_QP:
1438 ctx->params.h264_inter_qp = ctrl->val;
1439 break;
1440 case V4L2_CID_MPEG_VIDEO_H264_MIN_QP:
1441 ctx->params.h264_min_qp = ctrl->val;
1442 break;
1443 case V4L2_CID_MPEG_VIDEO_H264_MAX_QP:
1444 ctx->params.h264_max_qp = ctrl->val;
1445 break;
1446 case V4L2_CID_MPEG_VIDEO_H264_LOOP_FILTER_ALPHA:
1447 ctx->params.h264_deblk_alpha = ctrl->val;
1448 break;
1449 case V4L2_CID_MPEG_VIDEO_H264_LOOP_FILTER_BETA:
1450 ctx->params.h264_deblk_beta = ctrl->val;
1451 break;
1452 case V4L2_CID_MPEG_VIDEO_H264_LOOP_FILTER_MODE:
1453 ctx->params.h264_deblk_enabled = (ctrl->val ==
1454 V4L2_MPEG_VIDEO_H264_LOOP_FILTER_MODE_ENABLED);
1455 break;
1456 case V4L2_CID_MPEG_VIDEO_MPEG4_I_FRAME_QP:
1457 ctx->params.mpeg4_intra_qp = ctrl->val;
1458 break;
1459 case V4L2_CID_MPEG_VIDEO_MPEG4_P_FRAME_QP:
1460 ctx->params.mpeg4_inter_qp = ctrl->val;
1461 break;
1462 case V4L2_CID_MPEG_VIDEO_MULTI_SLICE_MODE:
1463 ctx->params.slice_mode = ctrl->val;
1464 break;
1465 case V4L2_CID_MPEG_VIDEO_MULTI_SLICE_MAX_MB:
1466 ctx->params.slice_max_mb = ctrl->val;
1467 break;
1468 case V4L2_CID_MPEG_VIDEO_MULTI_SLICE_MAX_BYTES:
1469 ctx->params.slice_max_bits = ctrl->val * 8;
1470 break;
1471 case V4L2_CID_MPEG_VIDEO_HEADER_MODE:
1472 break;
1473 case V4L2_CID_MPEG_VIDEO_CYCLIC_INTRA_REFRESH_MB:
1474 ctx->params.intra_refresh = ctrl->val;
1475 break;
1476 case V4L2_CID_JPEG_COMPRESSION_QUALITY:
1477 coda_set_jpeg_compression_quality(ctx, ctrl->val);
1478 break;
1479 case V4L2_CID_JPEG_RESTART_INTERVAL:
1480 ctx->params.jpeg_restart_interval = ctrl->val;
1481 break;
1482 case V4L2_CID_MPEG_VIDEO_VBV_DELAY:
1483 ctx->params.vbv_delay = ctrl->val;
1484 break;
1485 case V4L2_CID_MPEG_VIDEO_VBV_SIZE:
1486 ctx->params.vbv_size = min(ctrl->val * 8192, 0x7fffffff);
1487 break;
1488 default:
1489 v4l2_dbg(1, coda_debug, &ctx->dev->v4l2_dev,
1490 "Invalid control, id=%d, val=%d\n",
1491 ctrl->id, ctrl->val);
1492 return -EINVAL;
1493 }
1494
1495 return 0;
1496 }
1497
1498 static const struct v4l2_ctrl_ops coda_ctrl_ops = {
1499 .s_ctrl = coda_s_ctrl,
1500 };
1501
1502 static void coda_encode_ctrls(struct coda_ctx *ctx)
1503 {
1504 v4l2_ctrl_new_std(&ctx->ctrls, &coda_ctrl_ops,
1505 V4L2_CID_MPEG_VIDEO_BITRATE, 0, 32767000, 1000, 0);
1506 v4l2_ctrl_new_std(&ctx->ctrls, &coda_ctrl_ops,
1507 V4L2_CID_MPEG_VIDEO_GOP_SIZE, 1, 60, 1, 16);
1508 v4l2_ctrl_new_std(&ctx->ctrls, &coda_ctrl_ops,
1509 V4L2_CID_MPEG_VIDEO_H264_I_FRAME_QP, 0, 51, 1, 25);
1510 v4l2_ctrl_new_std(&ctx->ctrls, &coda_ctrl_ops,
1511 V4L2_CID_MPEG_VIDEO_H264_P_FRAME_QP, 0, 51, 1, 25);
1512 if (ctx->dev->devtype->product != CODA_960) {
1513 v4l2_ctrl_new_std(&ctx->ctrls, &coda_ctrl_ops,
1514 V4L2_CID_MPEG_VIDEO_H264_MIN_QP, 0, 51, 1, 12);
1515 }
1516 v4l2_ctrl_new_std(&ctx->ctrls, &coda_ctrl_ops,
1517 V4L2_CID_MPEG_VIDEO_H264_MAX_QP, 0, 51, 1, 51);
1518 v4l2_ctrl_new_std(&ctx->ctrls, &coda_ctrl_ops,
1519 V4L2_CID_MPEG_VIDEO_H264_LOOP_FILTER_ALPHA, 0, 15, 1, 0);
1520 v4l2_ctrl_new_std(&ctx->ctrls, &coda_ctrl_ops,
1521 V4L2_CID_MPEG_VIDEO_H264_LOOP_FILTER_BETA, 0, 15, 1, 0);
1522 v4l2_ctrl_new_std_menu(&ctx->ctrls, &coda_ctrl_ops,
1523 V4L2_CID_MPEG_VIDEO_H264_LOOP_FILTER_MODE,
1524 V4L2_MPEG_VIDEO_H264_LOOP_FILTER_MODE_DISABLED, 0x0,
1525 V4L2_MPEG_VIDEO_H264_LOOP_FILTER_MODE_ENABLED);
1526 v4l2_ctrl_new_std(&ctx->ctrls, &coda_ctrl_ops,
1527 V4L2_CID_MPEG_VIDEO_MPEG4_I_FRAME_QP, 1, 31, 1, 2);
1528 v4l2_ctrl_new_std(&ctx->ctrls, &coda_ctrl_ops,
1529 V4L2_CID_MPEG_VIDEO_MPEG4_P_FRAME_QP, 1, 31, 1, 2);
1530 v4l2_ctrl_new_std_menu(&ctx->ctrls, &coda_ctrl_ops,
1531 V4L2_CID_MPEG_VIDEO_MULTI_SLICE_MODE,
1532 V4L2_MPEG_VIDEO_MULTI_SICE_MODE_MAX_BYTES, 0x0,
1533 V4L2_MPEG_VIDEO_MULTI_SLICE_MODE_SINGLE);
1534 v4l2_ctrl_new_std(&ctx->ctrls, &coda_ctrl_ops,
1535 V4L2_CID_MPEG_VIDEO_MULTI_SLICE_MAX_MB, 1, 0x3fffffff, 1, 1);
1536 v4l2_ctrl_new_std(&ctx->ctrls, &coda_ctrl_ops,
1537 V4L2_CID_MPEG_VIDEO_MULTI_SLICE_MAX_BYTES, 1, 0x3fffffff, 1,
1538 500);
1539 v4l2_ctrl_new_std_menu(&ctx->ctrls, &coda_ctrl_ops,
1540 V4L2_CID_MPEG_VIDEO_HEADER_MODE,
1541 V4L2_MPEG_VIDEO_HEADER_MODE_JOINED_WITH_1ST_FRAME,
1542 (1 << V4L2_MPEG_VIDEO_HEADER_MODE_SEPARATE),
1543 V4L2_MPEG_VIDEO_HEADER_MODE_JOINED_WITH_1ST_FRAME);
1544 v4l2_ctrl_new_std(&ctx->ctrls, &coda_ctrl_ops,
1545 V4L2_CID_MPEG_VIDEO_CYCLIC_INTRA_REFRESH_MB, 0,
1546 1920 * 1088 / 256, 1, 0);
1547 v4l2_ctrl_new_std(&ctx->ctrls, &coda_ctrl_ops,
1548 V4L2_CID_MPEG_VIDEO_VBV_DELAY, 0, 0x7fff, 1, 0);
1549 /*
1550 * The maximum VBV size value is 0x7fffffff bits,
1551 * one bit less than 262144 KiB
1552 */
1553 v4l2_ctrl_new_std(&ctx->ctrls, &coda_ctrl_ops,
1554 V4L2_CID_MPEG_VIDEO_VBV_SIZE, 0, 262144, 1, 0);
1555 }
1556
1557 static void coda_jpeg_encode_ctrls(struct coda_ctx *ctx)
1558 {
1559 v4l2_ctrl_new_std(&ctx->ctrls, &coda_ctrl_ops,
1560 V4L2_CID_JPEG_COMPRESSION_QUALITY, 5, 100, 1, 50);
1561 v4l2_ctrl_new_std(&ctx->ctrls, &coda_ctrl_ops,
1562 V4L2_CID_JPEG_RESTART_INTERVAL, 0, 100, 1, 0);
1563 }
1564
1565 static int coda_ctrls_setup(struct coda_ctx *ctx)
1566 {
1567 v4l2_ctrl_handler_init(&ctx->ctrls, 2);
1568
1569 v4l2_ctrl_new_std(&ctx->ctrls, &coda_ctrl_ops,
1570 V4L2_CID_HFLIP, 0, 1, 1, 0);
1571 v4l2_ctrl_new_std(&ctx->ctrls, &coda_ctrl_ops,
1572 V4L2_CID_VFLIP, 0, 1, 1, 0);
1573 if (ctx->inst_type == CODA_INST_ENCODER) {
1574 if (ctx->cvd->dst_formats[0] == V4L2_PIX_FMT_JPEG)
1575 coda_jpeg_encode_ctrls(ctx);
1576 else
1577 coda_encode_ctrls(ctx);
1578 }
1579
1580 if (ctx->ctrls.error) {
1581 v4l2_err(&ctx->dev->v4l2_dev,
1582 "control initialization error (%d)",
1583 ctx->ctrls.error);
1584 return -EINVAL;
1585 }
1586
1587 return v4l2_ctrl_handler_setup(&ctx->ctrls);
1588 }
1589
1590 static int coda_queue_init(struct coda_ctx *ctx, struct vb2_queue *vq)
1591 {
1592 vq->drv_priv = ctx;
1593 vq->ops = &coda_qops;
1594 vq->buf_struct_size = sizeof(struct v4l2_m2m_buffer);
1595 vq->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_COPY;
1596 vq->lock = &ctx->dev->dev_mutex;
1597 /* One way to indicate end-of-stream for coda is to set the
1598 * bytesused == 0. However by default videobuf2 handles bytesused
1599 * equal to 0 as a special case and changes its value to the size
1600 * of the buffer. Set the allow_zero_bytesused flag, so
1601 * that videobuf2 will keep the value of bytesused intact.
1602 */
1603 vq->allow_zero_bytesused = 1;
1604
1605 return vb2_queue_init(vq);
1606 }
1607
1608 int coda_encoder_queue_init(void *priv, struct vb2_queue *src_vq,
1609 struct vb2_queue *dst_vq)
1610 {
1611 int ret;
1612
1613 src_vq->type = V4L2_BUF_TYPE_VIDEO_OUTPUT;
1614 src_vq->io_modes = VB2_DMABUF | VB2_MMAP;
1615 src_vq->mem_ops = &vb2_dma_contig_memops;
1616
1617 ret = coda_queue_init(priv, src_vq);
1618 if (ret)
1619 return ret;
1620
1621 dst_vq->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
1622 dst_vq->io_modes = VB2_DMABUF | VB2_MMAP;
1623 dst_vq->mem_ops = &vb2_dma_contig_memops;
1624
1625 return coda_queue_init(priv, dst_vq);
1626 }
1627
1628 int coda_decoder_queue_init(void *priv, struct vb2_queue *src_vq,
1629 struct vb2_queue *dst_vq)
1630 {
1631 int ret;
1632
1633 src_vq->type = V4L2_BUF_TYPE_VIDEO_OUTPUT;
1634 src_vq->io_modes = VB2_DMABUF | VB2_MMAP | VB2_USERPTR;
1635 src_vq->mem_ops = &vb2_vmalloc_memops;
1636
1637 ret = coda_queue_init(priv, src_vq);
1638 if (ret)
1639 return ret;
1640
1641 dst_vq->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
1642 dst_vq->io_modes = VB2_DMABUF | VB2_MMAP;
1643 dst_vq->mem_ops = &vb2_dma_contig_memops;
1644
1645 return coda_queue_init(priv, dst_vq);
1646 }
1647
1648 static int coda_next_free_instance(struct coda_dev *dev)
1649 {
1650 int idx = ffz(dev->instance_mask);
1651
1652 if ((idx < 0) ||
1653 (dev->devtype->product == CODA_DX6 && idx > CODADX6_MAX_INSTANCES))
1654 return -EBUSY;
1655
1656 return idx;
1657 }
1658
1659 /*
1660 * File operations
1661 */
1662
1663 static int coda_open(struct file *file)
1664 {
1665 struct video_device *vdev = video_devdata(file);
1666 struct coda_dev *dev = video_get_drvdata(vdev);
1667 struct coda_ctx *ctx = NULL;
1668 char *name;
1669 int ret;
1670 int idx;
1671
1672 ctx = kzalloc(sizeof(*ctx), GFP_KERNEL);
1673 if (!ctx)
1674 return -ENOMEM;
1675
1676 idx = coda_next_free_instance(dev);
1677 if (idx < 0) {
1678 ret = idx;
1679 goto err_coda_max;
1680 }
1681 set_bit(idx, &dev->instance_mask);
1682
1683 name = kasprintf(GFP_KERNEL, "context%d", idx);
1684 if (!name) {
1685 ret = -ENOMEM;
1686 goto err_coda_name_init;
1687 }
1688
1689 ctx->debugfs_entry = debugfs_create_dir(name, dev->debugfs_root);
1690 kfree(name);
1691
1692 ctx->cvd = to_coda_video_device(vdev);
1693 ctx->inst_type = ctx->cvd->type;
1694 ctx->ops = ctx->cvd->ops;
1695 ctx->use_bit = !ctx->cvd->direct;
1696 init_completion(&ctx->completion);
1697 INIT_WORK(&ctx->pic_run_work, coda_pic_run_work);
1698 if (ctx->ops->seq_end_work)
1699 INIT_WORK(&ctx->seq_end_work, ctx->ops->seq_end_work);
1700 v4l2_fh_init(&ctx->fh, video_devdata(file));
1701 file->private_data = &ctx->fh;
1702 v4l2_fh_add(&ctx->fh);
1703 ctx->dev = dev;
1704 ctx->idx = idx;
1705 switch (dev->devtype->product) {
1706 case CODA_960:
1707 ctx->frame_mem_ctrl = 1 << 12;
1708 /* fallthrough */
1709 case CODA_7541:
1710 ctx->reg_idx = 0;
1711 break;
1712 default:
1713 ctx->reg_idx = idx;
1714 }
1715
1716 /* Power up and upload firmware if necessary */
1717 ret = pm_runtime_get_sync(&dev->plat_dev->dev);
1718 if (ret < 0) {
1719 v4l2_err(&dev->v4l2_dev, "failed to power up: %d\n", ret);
1720 goto err_pm_get;
1721 }
1722
1723 ret = clk_prepare_enable(dev->clk_per);
1724 if (ret)
1725 goto err_clk_per;
1726
1727 ret = clk_prepare_enable(dev->clk_ahb);
1728 if (ret)
1729 goto err_clk_ahb;
1730
1731 set_default_params(ctx);
1732 ctx->fh.m2m_ctx = v4l2_m2m_ctx_init(dev->m2m_dev, ctx,
1733 ctx->ops->queue_init);
1734 if (IS_ERR(ctx->fh.m2m_ctx)) {
1735 ret = PTR_ERR(ctx->fh.m2m_ctx);
1736
1737 v4l2_err(&dev->v4l2_dev, "%s return error (%d)\n",
1738 __func__, ret);
1739 goto err_ctx_init;
1740 }
1741
1742 ret = coda_ctrls_setup(ctx);
1743 if (ret) {
1744 v4l2_err(&dev->v4l2_dev, "failed to setup coda controls\n");
1745 goto err_ctrls_setup;
1746 }
1747
1748 ctx->fh.ctrl_handler = &ctx->ctrls;
1749
1750 mutex_init(&ctx->bitstream_mutex);
1751 mutex_init(&ctx->buffer_mutex);
1752 INIT_LIST_HEAD(&ctx->buffer_meta_list);
1753 spin_lock_init(&ctx->buffer_meta_lock);
1754
1755 coda_lock(ctx);
1756 list_add(&ctx->list, &dev->instances);
1757 coda_unlock(ctx);
1758
1759 v4l2_dbg(1, coda_debug, &dev->v4l2_dev, "Created instance %d (%p)\n",
1760 ctx->idx, ctx);
1761
1762 return 0;
1763
1764 err_ctrls_setup:
1765 v4l2_m2m_ctx_release(ctx->fh.m2m_ctx);
1766 err_ctx_init:
1767 clk_disable_unprepare(dev->clk_ahb);
1768 err_clk_ahb:
1769 clk_disable_unprepare(dev->clk_per);
1770 err_clk_per:
1771 pm_runtime_put_sync(&dev->plat_dev->dev);
1772 err_pm_get:
1773 v4l2_fh_del(&ctx->fh);
1774 v4l2_fh_exit(&ctx->fh);
1775 clear_bit(ctx->idx, &dev->instance_mask);
1776 err_coda_name_init:
1777 err_coda_max:
1778 kfree(ctx);
1779 return ret;
1780 }
1781
1782 static int coda_release(struct file *file)
1783 {
1784 struct coda_dev *dev = video_drvdata(file);
1785 struct coda_ctx *ctx = fh_to_ctx(file->private_data);
1786
1787 v4l2_dbg(1, coda_debug, &dev->v4l2_dev, "Releasing instance %p\n",
1788 ctx);
1789
1790 if (ctx->inst_type == CODA_INST_DECODER && ctx->use_bit)
1791 coda_bit_stream_end_flag(ctx);
1792
1793 /* If this instance is running, call .job_abort and wait for it to end */
1794 v4l2_m2m_ctx_release(ctx->fh.m2m_ctx);
1795
1796 /* In case the instance was not running, we still need to call SEQ_END */
1797 if (ctx->ops->seq_end_work) {
1798 queue_work(dev->workqueue, &ctx->seq_end_work);
1799 flush_work(&ctx->seq_end_work);
1800 }
1801
1802 coda_lock(ctx);
1803 list_del(&ctx->list);
1804 coda_unlock(ctx);
1805
1806 if (ctx->dev->devtype->product == CODA_DX6)
1807 coda_free_aux_buf(dev, &ctx->workbuf);
1808
1809 v4l2_ctrl_handler_free(&ctx->ctrls);
1810 clk_disable_unprepare(dev->clk_ahb);
1811 clk_disable_unprepare(dev->clk_per);
1812 pm_runtime_put_sync(&dev->plat_dev->dev);
1813 v4l2_fh_del(&ctx->fh);
1814 v4l2_fh_exit(&ctx->fh);
1815 clear_bit(ctx->idx, &dev->instance_mask);
1816 if (ctx->ops->release)
1817 ctx->ops->release(ctx);
1818 debugfs_remove_recursive(ctx->debugfs_entry);
1819 kfree(ctx);
1820
1821 return 0;
1822 }
1823
1824 static const struct v4l2_file_operations coda_fops = {
1825 .owner = THIS_MODULE,
1826 .open = coda_open,
1827 .release = coda_release,
1828 .poll = v4l2_m2m_fop_poll,
1829 .unlocked_ioctl = video_ioctl2,
1830 .mmap = v4l2_m2m_fop_mmap,
1831 };
1832
1833 static int coda_hw_init(struct coda_dev *dev)
1834 {
1835 u32 data;
1836 u16 *p;
1837 int i, ret;
1838
1839 ret = clk_prepare_enable(dev->clk_per);
1840 if (ret)
1841 goto err_clk_per;
1842
1843 ret = clk_prepare_enable(dev->clk_ahb);
1844 if (ret)
1845 goto err_clk_ahb;
1846
1847 if (dev->rstc)
1848 reset_control_reset(dev->rstc);
1849
1850 /*
1851 * Copy the first CODA_ISRAM_SIZE in the internal SRAM.
1852 * The 16-bit chars in the code buffer are in memory access
1853 * order, re-sort them to CODA order for register download.
1854 * Data in this SRAM survives a reboot.
1855 */
1856 p = (u16 *)dev->codebuf.vaddr;
1857 if (dev->devtype->product == CODA_DX6) {
1858 for (i = 0; i < (CODA_ISRAM_SIZE / 2); i++) {
1859 data = CODA_DOWN_ADDRESS_SET(i) |
1860 CODA_DOWN_DATA_SET(p[i ^ 1]);
1861 coda_write(dev, data, CODA_REG_BIT_CODE_DOWN);
1862 }
1863 } else {
1864 for (i = 0; i < (CODA_ISRAM_SIZE / 2); i++) {
1865 data = CODA_DOWN_ADDRESS_SET(i) |
1866 CODA_DOWN_DATA_SET(p[round_down(i, 4) +
1867 3 - (i % 4)]);
1868 coda_write(dev, data, CODA_REG_BIT_CODE_DOWN);
1869 }
1870 }
1871
1872 /* Clear registers */
1873 for (i = 0; i < 64; i++)
1874 coda_write(dev, 0, CODA_REG_BIT_CODE_BUF_ADDR + i * 4);
1875
1876 /* Tell the BIT where to find everything it needs */
1877 if (dev->devtype->product == CODA_960 ||
1878 dev->devtype->product == CODA_7541) {
1879 coda_write(dev, dev->tempbuf.paddr,
1880 CODA_REG_BIT_TEMP_BUF_ADDR);
1881 coda_write(dev, 0, CODA_REG_BIT_BIT_STREAM_PARAM);
1882 } else {
1883 coda_write(dev, dev->workbuf.paddr,
1884 CODA_REG_BIT_WORK_BUF_ADDR);
1885 }
1886 coda_write(dev, dev->codebuf.paddr,
1887 CODA_REG_BIT_CODE_BUF_ADDR);
1888 coda_write(dev, 0, CODA_REG_BIT_CODE_RUN);
1889
1890 /* Set default values */
1891 switch (dev->devtype->product) {
1892 case CODA_DX6:
1893 coda_write(dev, CODADX6_STREAM_BUF_PIC_FLUSH,
1894 CODA_REG_BIT_STREAM_CTRL);
1895 break;
1896 default:
1897 coda_write(dev, CODA7_STREAM_BUF_PIC_FLUSH,
1898 CODA_REG_BIT_STREAM_CTRL);
1899 }
1900 if (dev->devtype->product == CODA_960)
1901 coda_write(dev, 1 << 12, CODA_REG_BIT_FRAME_MEM_CTRL);
1902 else
1903 coda_write(dev, 0, CODA_REG_BIT_FRAME_MEM_CTRL);
1904
1905 if (dev->devtype->product != CODA_DX6)
1906 coda_write(dev, 0, CODA7_REG_BIT_AXI_SRAM_USE);
1907
1908 coda_write(dev, CODA_INT_INTERRUPT_ENABLE,
1909 CODA_REG_BIT_INT_ENABLE);
1910
1911 /* Reset VPU and start processor */
1912 data = coda_read(dev, CODA_REG_BIT_CODE_RESET);
1913 data |= CODA_REG_RESET_ENABLE;
1914 coda_write(dev, data, CODA_REG_BIT_CODE_RESET);
1915 udelay(10);
1916 data &= ~CODA_REG_RESET_ENABLE;
1917 coda_write(dev, data, CODA_REG_BIT_CODE_RESET);
1918 coda_write(dev, CODA_REG_RUN_ENABLE, CODA_REG_BIT_CODE_RUN);
1919
1920 clk_disable_unprepare(dev->clk_ahb);
1921 clk_disable_unprepare(dev->clk_per);
1922
1923 return 0;
1924
1925 err_clk_ahb:
1926 clk_disable_unprepare(dev->clk_per);
1927 err_clk_per:
1928 return ret;
1929 }
1930
1931 static int coda_register_device(struct coda_dev *dev, int i)
1932 {
1933 struct video_device *vfd = &dev->vfd[i];
1934
1935 if (i >= dev->devtype->num_vdevs)
1936 return -EINVAL;
1937
1938 strlcpy(vfd->name, dev->devtype->vdevs[i]->name, sizeof(vfd->name));
1939 vfd->fops = &coda_fops;
1940 vfd->ioctl_ops = &coda_ioctl_ops;
1941 vfd->release = video_device_release_empty,
1942 vfd->lock = &dev->dev_mutex;
1943 vfd->v4l2_dev = &dev->v4l2_dev;
1944 vfd->vfl_dir = VFL_DIR_M2M;
1945 video_set_drvdata(vfd, dev);
1946
1947 /* Not applicable, use the selection API instead */
1948 v4l2_disable_ioctl(vfd, VIDIOC_CROPCAP);
1949 v4l2_disable_ioctl(vfd, VIDIOC_G_CROP);
1950 v4l2_disable_ioctl(vfd, VIDIOC_S_CROP);
1951
1952 return video_register_device(vfd, VFL_TYPE_GRABBER, 0);
1953 }
1954
1955 static void coda_fw_callback(const struct firmware *fw, void *context)
1956 {
1957 struct coda_dev *dev = context;
1958 struct platform_device *pdev = dev->plat_dev;
1959 int i, ret;
1960
1961 if (!fw) {
1962 v4l2_err(&dev->v4l2_dev, "firmware request failed\n");
1963 goto put_pm;
1964 }
1965
1966 /* allocate auxiliary per-device code buffer for the BIT processor */
1967 ret = coda_alloc_aux_buf(dev, &dev->codebuf, fw->size, "codebuf",
1968 dev->debugfs_root);
1969 if (ret < 0)
1970 goto put_pm;
1971
1972 /* Copy the whole firmware image to the code buffer */
1973 memcpy(dev->codebuf.vaddr, fw->data, fw->size);
1974 release_firmware(fw);
1975
1976 ret = coda_hw_init(dev);
1977 if (ret < 0) {
1978 v4l2_err(&dev->v4l2_dev, "HW initialization failed\n");
1979 goto put_pm;
1980 }
1981
1982 ret = coda_check_firmware(dev);
1983 if (ret < 0)
1984 goto put_pm;
1985
1986 dev->alloc_ctx = vb2_dma_contig_init_ctx(&pdev->dev);
1987 if (IS_ERR(dev->alloc_ctx)) {
1988 v4l2_err(&dev->v4l2_dev, "Failed to alloc vb2 context\n");
1989 goto put_pm;
1990 }
1991
1992 dev->m2m_dev = v4l2_m2m_init(&coda_m2m_ops);
1993 if (IS_ERR(dev->m2m_dev)) {
1994 v4l2_err(&dev->v4l2_dev, "Failed to init mem2mem device\n");
1995 goto rel_ctx;
1996 }
1997
1998 for (i = 0; i < dev->devtype->num_vdevs; i++) {
1999 ret = coda_register_device(dev, i);
2000 if (ret) {
2001 v4l2_err(&dev->v4l2_dev,
2002 "Failed to register %s video device: %d\n",
2003 dev->devtype->vdevs[i]->name, ret);
2004 goto rel_vfd;
2005 }
2006 }
2007
2008 v4l2_info(&dev->v4l2_dev, "codec registered as /dev/video[%d-%d]\n",
2009 dev->vfd[0].num, dev->vfd[i - 1].num);
2010
2011 pm_runtime_put_sync(&pdev->dev);
2012 return;
2013
2014 rel_vfd:
2015 while (--i >= 0)
2016 video_unregister_device(&dev->vfd[i]);
2017 v4l2_m2m_release(dev->m2m_dev);
2018 rel_ctx:
2019 vb2_dma_contig_cleanup_ctx(dev->alloc_ctx);
2020 put_pm:
2021 pm_runtime_put_sync(&pdev->dev);
2022 }
2023
2024 static int coda_firmware_request(struct coda_dev *dev)
2025 {
2026 char *fw = dev->devtype->firmware;
2027
2028 dev_dbg(&dev->plat_dev->dev, "requesting firmware '%s' for %s\n", fw,
2029 coda_product_name(dev->devtype->product));
2030
2031 return request_firmware_nowait(THIS_MODULE, true,
2032 fw, &dev->plat_dev->dev, GFP_KERNEL, dev, coda_fw_callback);
2033 }
2034
2035 enum coda_platform {
2036 CODA_IMX27,
2037 CODA_IMX53,
2038 CODA_IMX6Q,
2039 CODA_IMX6DL,
2040 };
2041
2042 static const struct coda_devtype coda_devdata[] = {
2043 [CODA_IMX27] = {
2044 .firmware = "v4l-codadx6-imx27.bin",
2045 .product = CODA_DX6,
2046 .codecs = codadx6_codecs,
2047 .num_codecs = ARRAY_SIZE(codadx6_codecs),
2048 .vdevs = codadx6_video_devices,
2049 .num_vdevs = ARRAY_SIZE(codadx6_video_devices),
2050 .workbuf_size = 288 * 1024 + FMO_SLICE_SAVE_BUF_SIZE * 8 * 1024,
2051 .iram_size = 0xb000,
2052 },
2053 [CODA_IMX53] = {
2054 .firmware = "v4l-coda7541-imx53.bin",
2055 .product = CODA_7541,
2056 .codecs = coda7_codecs,
2057 .num_codecs = ARRAY_SIZE(coda7_codecs),
2058 .vdevs = coda7_video_devices,
2059 .num_vdevs = ARRAY_SIZE(coda7_video_devices),
2060 .workbuf_size = 128 * 1024,
2061 .tempbuf_size = 304 * 1024,
2062 .iram_size = 0x14000,
2063 },
2064 [CODA_IMX6Q] = {
2065 .firmware = "v4l-coda960-imx6q.bin",
2066 .product = CODA_960,
2067 .codecs = coda9_codecs,
2068 .num_codecs = ARRAY_SIZE(coda9_codecs),
2069 .vdevs = coda9_video_devices,
2070 .num_vdevs = ARRAY_SIZE(coda9_video_devices),
2071 .workbuf_size = 80 * 1024,
2072 .tempbuf_size = 204 * 1024,
2073 .iram_size = 0x21000,
2074 },
2075 [CODA_IMX6DL] = {
2076 .firmware = "v4l-coda960-imx6dl.bin",
2077 .product = CODA_960,
2078 .codecs = coda9_codecs,
2079 .num_codecs = ARRAY_SIZE(coda9_codecs),
2080 .vdevs = coda9_video_devices,
2081 .num_vdevs = ARRAY_SIZE(coda9_video_devices),
2082 .workbuf_size = 80 * 1024,
2083 .tempbuf_size = 204 * 1024,
2084 .iram_size = 0x20000,
2085 },
2086 };
2087
2088 static struct platform_device_id coda_platform_ids[] = {
2089 { .name = "coda-imx27", .driver_data = CODA_IMX27 },
2090 { /* sentinel */ }
2091 };
2092 MODULE_DEVICE_TABLE(platform, coda_platform_ids);
2093
2094 #ifdef CONFIG_OF
2095 static const struct of_device_id coda_dt_ids[] = {
2096 { .compatible = "fsl,imx27-vpu", .data = &coda_devdata[CODA_IMX27] },
2097 { .compatible = "fsl,imx53-vpu", .data = &coda_devdata[CODA_IMX53] },
2098 { .compatible = "fsl,imx6q-vpu", .data = &coda_devdata[CODA_IMX6Q] },
2099 { .compatible = "fsl,imx6dl-vpu", .data = &coda_devdata[CODA_IMX6DL] },
2100 { /* sentinel */ }
2101 };
2102 MODULE_DEVICE_TABLE(of, coda_dt_ids);
2103 #endif
2104
2105 static int coda_probe(struct platform_device *pdev)
2106 {
2107 const struct of_device_id *of_id =
2108 of_match_device(of_match_ptr(coda_dt_ids), &pdev->dev);
2109 const struct platform_device_id *pdev_id;
2110 struct coda_platform_data *pdata = pdev->dev.platform_data;
2111 struct device_node *np = pdev->dev.of_node;
2112 struct gen_pool *pool;
2113 struct coda_dev *dev;
2114 struct resource *res;
2115 int ret, irq;
2116
2117 dev = devm_kzalloc(&pdev->dev, sizeof(*dev), GFP_KERNEL);
2118 if (!dev)
2119 return -ENOMEM;
2120
2121 pdev_id = of_id ? of_id->data : platform_get_device_id(pdev);
2122
2123 if (of_id) {
2124 dev->devtype = of_id->data;
2125 } else if (pdev_id) {
2126 dev->devtype = &coda_devdata[pdev_id->driver_data];
2127 } else {
2128 ret = -EINVAL;
2129 goto err_v4l2_register;
2130 }
2131
2132 spin_lock_init(&dev->irqlock);
2133 INIT_LIST_HEAD(&dev->instances);
2134
2135 dev->plat_dev = pdev;
2136 dev->clk_per = devm_clk_get(&pdev->dev, "per");
2137 if (IS_ERR(dev->clk_per)) {
2138 dev_err(&pdev->dev, "Could not get per clock\n");
2139 return PTR_ERR(dev->clk_per);
2140 }
2141
2142 dev->clk_ahb = devm_clk_get(&pdev->dev, "ahb");
2143 if (IS_ERR(dev->clk_ahb)) {
2144 dev_err(&pdev->dev, "Could not get ahb clock\n");
2145 return PTR_ERR(dev->clk_ahb);
2146 }
2147
2148 /* Get memory for physical registers */
2149 res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
2150 dev->regs_base = devm_ioremap_resource(&pdev->dev, res);
2151 if (IS_ERR(dev->regs_base))
2152 return PTR_ERR(dev->regs_base);
2153
2154 /* IRQ */
2155 irq = platform_get_irq_byname(pdev, "bit");
2156 if (irq < 0)
2157 irq = platform_get_irq(pdev, 0);
2158 if (irq < 0) {
2159 dev_err(&pdev->dev, "failed to get irq resource\n");
2160 return irq;
2161 }
2162
2163 ret = devm_request_threaded_irq(&pdev->dev, irq, NULL, coda_irq_handler,
2164 IRQF_ONESHOT, dev_name(&pdev->dev), dev);
2165 if (ret < 0) {
2166 dev_err(&pdev->dev, "failed to request irq: %d\n", ret);
2167 return ret;
2168 }
2169
2170 dev->rstc = devm_reset_control_get_optional(&pdev->dev, NULL);
2171 if (IS_ERR(dev->rstc)) {
2172 ret = PTR_ERR(dev->rstc);
2173 if (ret == -ENOENT || ret == -ENOSYS) {
2174 dev->rstc = NULL;
2175 } else {
2176 dev_err(&pdev->dev, "failed get reset control: %d\n",
2177 ret);
2178 return ret;
2179 }
2180 }
2181
2182 /* Get IRAM pool from device tree or platform data */
2183 pool = of_gen_pool_get(np, "iram", 0);
2184 if (!pool && pdata)
2185 pool = gen_pool_get(pdata->iram_dev, NULL);
2186 if (!pool) {
2187 dev_err(&pdev->dev, "iram pool not available\n");
2188 return -ENOMEM;
2189 }
2190 dev->iram_pool = pool;
2191
2192 ret = v4l2_device_register(&pdev->dev, &dev->v4l2_dev);
2193 if (ret)
2194 return ret;
2195
2196 mutex_init(&dev->dev_mutex);
2197 mutex_init(&dev->coda_mutex);
2198
2199 dev->debugfs_root = debugfs_create_dir("coda", NULL);
2200 if (!dev->debugfs_root)
2201 dev_warn(&pdev->dev, "failed to create debugfs root\n");
2202
2203 /* allocate auxiliary per-device buffers for the BIT processor */
2204 if (dev->devtype->product == CODA_DX6) {
2205 ret = coda_alloc_aux_buf(dev, &dev->workbuf,
2206 dev->devtype->workbuf_size, "workbuf",
2207 dev->debugfs_root);
2208 if (ret < 0)
2209 goto err_v4l2_register;
2210 }
2211
2212 if (dev->devtype->tempbuf_size) {
2213 ret = coda_alloc_aux_buf(dev, &dev->tempbuf,
2214 dev->devtype->tempbuf_size, "tempbuf",
2215 dev->debugfs_root);
2216 if (ret < 0)
2217 goto err_v4l2_register;
2218 }
2219
2220 dev->iram.size = dev->devtype->iram_size;
2221 dev->iram.vaddr = gen_pool_dma_alloc(dev->iram_pool, dev->iram.size,
2222 &dev->iram.paddr);
2223 if (!dev->iram.vaddr) {
2224 dev_warn(&pdev->dev, "unable to alloc iram\n");
2225 } else {
2226 memset(dev->iram.vaddr, 0, dev->iram.size);
2227 dev->iram.blob.data = dev->iram.vaddr;
2228 dev->iram.blob.size = dev->iram.size;
2229 dev->iram.dentry = debugfs_create_blob("iram", 0644,
2230 dev->debugfs_root,
2231 &dev->iram.blob);
2232 }
2233
2234 dev->workqueue = alloc_workqueue("coda", WQ_UNBOUND | WQ_MEM_RECLAIM, 1);
2235 if (!dev->workqueue) {
2236 dev_err(&pdev->dev, "unable to alloc workqueue\n");
2237 ret = -ENOMEM;
2238 goto err_v4l2_register;
2239 }
2240
2241 platform_set_drvdata(pdev, dev);
2242
2243 /*
2244 * Start activated so we can directly call coda_hw_init in
2245 * coda_fw_callback regardless of whether CONFIG_PM is
2246 * enabled or whether the device is associated with a PM domain.
2247 */
2248 pm_runtime_get_noresume(&pdev->dev);
2249 pm_runtime_set_active(&pdev->dev);
2250 pm_runtime_enable(&pdev->dev);
2251
2252 return coda_firmware_request(dev);
2253
2254 err_v4l2_register:
2255 v4l2_device_unregister(&dev->v4l2_dev);
2256 return ret;
2257 }
2258
2259 static int coda_remove(struct platform_device *pdev)
2260 {
2261 struct coda_dev *dev = platform_get_drvdata(pdev);
2262 int i;
2263
2264 for (i = 0; i < ARRAY_SIZE(dev->vfd); i++) {
2265 if (video_get_drvdata(&dev->vfd[i]))
2266 video_unregister_device(&dev->vfd[i]);
2267 }
2268 if (dev->m2m_dev)
2269 v4l2_m2m_release(dev->m2m_dev);
2270 pm_runtime_disable(&pdev->dev);
2271 if (dev->alloc_ctx)
2272 vb2_dma_contig_cleanup_ctx(dev->alloc_ctx);
2273 v4l2_device_unregister(&dev->v4l2_dev);
2274 destroy_workqueue(dev->workqueue);
2275 if (dev->iram.vaddr)
2276 gen_pool_free(dev->iram_pool, (unsigned long)dev->iram.vaddr,
2277 dev->iram.size);
2278 coda_free_aux_buf(dev, &dev->codebuf);
2279 coda_free_aux_buf(dev, &dev->tempbuf);
2280 coda_free_aux_buf(dev, &dev->workbuf);
2281 debugfs_remove_recursive(dev->debugfs_root);
2282 return 0;
2283 }
2284
2285 #ifdef CONFIG_PM
2286 static int coda_runtime_resume(struct device *dev)
2287 {
2288 struct coda_dev *cdev = dev_get_drvdata(dev);
2289 int ret = 0;
2290
2291 if (dev->pm_domain && cdev->codebuf.vaddr) {
2292 ret = coda_hw_init(cdev);
2293 if (ret)
2294 v4l2_err(&cdev->v4l2_dev, "HW initialization failed\n");
2295 }
2296
2297 return ret;
2298 }
2299 #endif
2300
2301 static const struct dev_pm_ops coda_pm_ops = {
2302 SET_RUNTIME_PM_OPS(NULL, coda_runtime_resume, NULL)
2303 };
2304
2305 static struct platform_driver coda_driver = {
2306 .probe = coda_probe,
2307 .remove = coda_remove,
2308 .driver = {
2309 .name = CODA_NAME,
2310 .of_match_table = of_match_ptr(coda_dt_ids),
2311 .pm = &coda_pm_ops,
2312 },
2313 .id_table = coda_platform_ids,
2314 };
2315
2316 module_platform_driver(coda_driver);
2317
2318 MODULE_LICENSE("GPL");
2319 MODULE_AUTHOR("Javier Martin <javier.martin@vista-silicon.com>");
2320 MODULE_DESCRIPTION("Coda multi-standard codec V4L2 driver");
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