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/genalloc.h>
19 #include <linux/interrupt.h>
20 #include <linux/io.h>
21 #include <linux/irq.h>
22 #include <linux/kfifo.h>
23 #include <linux/module.h>
24 #include <linux/of_device.h>
25 #include <linux/platform_device.h>
26 #include <linux/pm_runtime.h>
27 #include <linux/slab.h>
28 #include <linux/videodev2.h>
29 #include <linux/of.h>
30 #include <linux/platform_data/coda.h>
31 #include <linux/reset.h>
32
33 #include <media/v4l2-ctrls.h>
34 #include <media/v4l2-device.h>
35 #include <media/v4l2-event.h>
36 #include <media/v4l2-ioctl.h>
37 #include <media/v4l2-mem2mem.h>
38 #include <media/videobuf2-core.h>
39 #include <media/videobuf2-dma-contig.h>
40 #include <media/videobuf2-vmalloc.h>
41
42 #include "coda.h"
43
44 #define CODA_NAME "coda"
45
46 #define CODADX6_MAX_INSTANCES 4
47 #define CODA_MAX_FORMATS 4
48
49 #define CODA_ISRAM_SIZE (2048 * 2)
50
51 #define MIN_W 176
52 #define MIN_H 144
53
54 #define S_ALIGN 1 /* multiple of 2 */
55 #define W_ALIGN 1 /* multiple of 2 */
56 #define H_ALIGN 1 /* multiple of 2 */
57
58 #define fh_to_ctx(__fh) container_of(__fh, struct coda_ctx, fh)
59
60 int coda_debug;
61 module_param(coda_debug, int, 0644);
62 MODULE_PARM_DESC(coda_debug, "Debug level (0-2)");
63
64 struct coda_fmt {
65 char *name;
66 u32 fourcc;
67 };
68
coda_write(struct coda_dev * dev,u32 data,u32 reg)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
coda_read(struct coda_dev * dev,u32 reg)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
coda_write_base(struct coda_ctx * ctx,struct coda_q_data * q_data,struct vb2_buffer * buf,unsigned int reg_y)86 void coda_write_base(struct coda_ctx *ctx, struct coda_q_data *q_data,
87 struct vb2_buffer *buf, unsigned int reg_y)
88 {
89 u32 base_y = vb2_dma_contig_plane_dma_addr(buf, 0);
90 u32 base_cb, base_cr;
91
92 switch (q_data->fourcc) {
93 case V4L2_PIX_FMT_YVU420:
94 /* Switch Cb and Cr for YVU420 format */
95 base_cr = base_y + q_data->bytesperline * q_data->height;
96 base_cb = base_cr + q_data->bytesperline * q_data->height / 4;
97 break;
98 case V4L2_PIX_FMT_YUV420:
99 case V4L2_PIX_FMT_NV12:
100 default:
101 base_cb = base_y + q_data->bytesperline * q_data->height;
102 base_cr = base_cb + 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 /*
115 * Array of all formats supported by any version of Coda:
116 */
117 static const struct coda_fmt coda_formats[] = {
118 {
119 .name = "YUV 4:2:0 Planar, YCbCr",
120 .fourcc = V4L2_PIX_FMT_YUV420,
121 },
122 {
123 .name = "YUV 4:2:0 Planar, YCrCb",
124 .fourcc = V4L2_PIX_FMT_YVU420,
125 },
126 {
127 .name = "YUV 4:2:0 Partial interleaved Y/CbCr",
128 .fourcc = V4L2_PIX_FMT_NV12,
129 },
130 {
131 .name = "YUV 4:2:2 Planar, YCbCr",
132 .fourcc = V4L2_PIX_FMT_YUV422P,
133 },
134 {
135 .name = "H264 Encoded Stream",
136 .fourcc = V4L2_PIX_FMT_H264,
137 },
138 {
139 .name = "MPEG4 Encoded Stream",
140 .fourcc = V4L2_PIX_FMT_MPEG4,
141 },
142 {
143 .name = "JPEG Encoded Images",
144 .fourcc = V4L2_PIX_FMT_JPEG,
145 },
146 };
147
148 #define CODA_CODEC(mode, src_fourcc, dst_fourcc, max_w, max_h) \
149 { mode, src_fourcc, dst_fourcc, max_w, max_h }
150
151 /*
152 * Arrays of codecs supported by each given version of Coda:
153 * i.MX27 -> codadx6
154 * i.MX5x -> coda7
155 * i.MX6 -> coda960
156 * Use V4L2_PIX_FMT_YUV420 as placeholder for all supported YUV 4:2:0 variants
157 */
158 static const struct coda_codec codadx6_codecs[] = {
159 CODA_CODEC(CODADX6_MODE_ENCODE_H264, V4L2_PIX_FMT_YUV420, V4L2_PIX_FMT_H264, 720, 576),
160 CODA_CODEC(CODADX6_MODE_ENCODE_MP4, V4L2_PIX_FMT_YUV420, V4L2_PIX_FMT_MPEG4, 720, 576),
161 };
162
163 static const struct coda_codec coda7_codecs[] = {
164 CODA_CODEC(CODA7_MODE_ENCODE_H264, V4L2_PIX_FMT_YUV420, V4L2_PIX_FMT_H264, 1280, 720),
165 CODA_CODEC(CODA7_MODE_ENCODE_MP4, V4L2_PIX_FMT_YUV420, V4L2_PIX_FMT_MPEG4, 1280, 720),
166 CODA_CODEC(CODA7_MODE_ENCODE_MJPG, V4L2_PIX_FMT_YUV420, V4L2_PIX_FMT_JPEG, 8192, 8192),
167 CODA_CODEC(CODA7_MODE_DECODE_H264, V4L2_PIX_FMT_H264, V4L2_PIX_FMT_YUV420, 1920, 1088),
168 CODA_CODEC(CODA7_MODE_DECODE_MP4, V4L2_PIX_FMT_MPEG4, V4L2_PIX_FMT_YUV420, 1920, 1088),
169 CODA_CODEC(CODA7_MODE_DECODE_MJPG, V4L2_PIX_FMT_JPEG, V4L2_PIX_FMT_YUV420, 8192, 8192),
170 };
171
172 static const struct coda_codec coda9_codecs[] = {
173 CODA_CODEC(CODA9_MODE_ENCODE_H264, V4L2_PIX_FMT_YUV420, V4L2_PIX_FMT_H264, 1920, 1088),
174 CODA_CODEC(CODA9_MODE_ENCODE_MP4, V4L2_PIX_FMT_YUV420, V4L2_PIX_FMT_MPEG4, 1920, 1088),
175 CODA_CODEC(CODA9_MODE_DECODE_H264, V4L2_PIX_FMT_H264, V4L2_PIX_FMT_YUV420, 1920, 1088),
176 CODA_CODEC(CODA9_MODE_DECODE_MP4, V4L2_PIX_FMT_MPEG4, V4L2_PIX_FMT_YUV420, 1920, 1088),
177 };
178
179 struct coda_video_device {
180 const char *name;
181 enum coda_inst_type type;
182 const struct coda_context_ops *ops;
183 bool direct;
184 u32 src_formats[CODA_MAX_FORMATS];
185 u32 dst_formats[CODA_MAX_FORMATS];
186 };
187
188 static const struct coda_video_device coda_bit_encoder = {
189 .name = "coda-encoder",
190 .type = CODA_INST_ENCODER,
191 .ops = &coda_bit_encode_ops,
192 .src_formats = {
193 V4L2_PIX_FMT_YUV420,
194 V4L2_PIX_FMT_YVU420,
195 V4L2_PIX_FMT_NV12,
196 },
197 .dst_formats = {
198 V4L2_PIX_FMT_H264,
199 V4L2_PIX_FMT_MPEG4,
200 },
201 };
202
203 static const struct coda_video_device coda_bit_jpeg_encoder = {
204 .name = "coda-jpeg-encoder",
205 .type = CODA_INST_ENCODER,
206 .ops = &coda_bit_encode_ops,
207 .src_formats = {
208 V4L2_PIX_FMT_YUV420,
209 V4L2_PIX_FMT_YVU420,
210 V4L2_PIX_FMT_NV12,
211 V4L2_PIX_FMT_YUV422P,
212 },
213 .dst_formats = {
214 V4L2_PIX_FMT_JPEG,
215 },
216 };
217
218 static const struct coda_video_device coda_bit_decoder = {
219 .name = "coda-decoder",
220 .type = CODA_INST_DECODER,
221 .ops = &coda_bit_decode_ops,
222 .src_formats = {
223 V4L2_PIX_FMT_H264,
224 V4L2_PIX_FMT_MPEG4,
225 },
226 .dst_formats = {
227 V4L2_PIX_FMT_YUV420,
228 V4L2_PIX_FMT_YVU420,
229 V4L2_PIX_FMT_NV12,
230 },
231 };
232
233 static const struct coda_video_device coda_bit_jpeg_decoder = {
234 .name = "coda-jpeg-decoder",
235 .type = CODA_INST_DECODER,
236 .ops = &coda_bit_decode_ops,
237 .src_formats = {
238 V4L2_PIX_FMT_JPEG,
239 },
240 .dst_formats = {
241 V4L2_PIX_FMT_YUV420,
242 V4L2_PIX_FMT_YVU420,
243 V4L2_PIX_FMT_NV12,
244 V4L2_PIX_FMT_YUV422P,
245 },
246 };
247
248 static const struct coda_video_device *codadx6_video_devices[] = {
249 &coda_bit_encoder,
250 };
251
252 static const struct coda_video_device *coda7_video_devices[] = {
253 &coda_bit_jpeg_encoder,
254 &coda_bit_jpeg_decoder,
255 &coda_bit_encoder,
256 &coda_bit_decoder,
257 };
258
259 static const struct coda_video_device *coda9_video_devices[] = {
260 &coda_bit_encoder,
261 &coda_bit_decoder,
262 };
263
coda_format_is_yuv(u32 fourcc)264 static bool coda_format_is_yuv(u32 fourcc)
265 {
266 switch (fourcc) {
267 case V4L2_PIX_FMT_YUV420:
268 case V4L2_PIX_FMT_YVU420:
269 case V4L2_PIX_FMT_NV12:
270 case V4L2_PIX_FMT_YUV422P:
271 return true;
272 default:
273 return false;
274 }
275 }
276
coda_format_name(u32 fourcc)277 static const char *coda_format_name(u32 fourcc)
278 {
279 int i;
280
281 for (i = 0; i < ARRAY_SIZE(coda_formats); i++) {
282 if (coda_formats[i].fourcc == fourcc)
283 return coda_formats[i].name;
284 }
285
286 return NULL;
287 }
288
289 /*
290 * Normalize all supported YUV 4:2:0 formats to the value used in the codec
291 * tables.
292 */
coda_format_normalize_yuv(u32 fourcc)293 static u32 coda_format_normalize_yuv(u32 fourcc)
294 {
295 return coda_format_is_yuv(fourcc) ? V4L2_PIX_FMT_YUV420 : fourcc;
296 }
297
coda_find_codec(struct coda_dev * dev,int src_fourcc,int dst_fourcc)298 static const struct coda_codec *coda_find_codec(struct coda_dev *dev,
299 int src_fourcc, int dst_fourcc)
300 {
301 const struct coda_codec *codecs = dev->devtype->codecs;
302 int num_codecs = dev->devtype->num_codecs;
303 int k;
304
305 src_fourcc = coda_format_normalize_yuv(src_fourcc);
306 dst_fourcc = coda_format_normalize_yuv(dst_fourcc);
307 if (src_fourcc == dst_fourcc)
308 return NULL;
309
310 for (k = 0; k < num_codecs; k++) {
311 if (codecs[k].src_fourcc == src_fourcc &&
312 codecs[k].dst_fourcc == dst_fourcc)
313 break;
314 }
315
316 if (k == num_codecs)
317 return NULL;
318
319 return &codecs[k];
320 }
321
coda_get_max_dimensions(struct coda_dev * dev,const struct coda_codec * codec,int * max_w,int * max_h)322 static void coda_get_max_dimensions(struct coda_dev *dev,
323 const struct coda_codec *codec,
324 int *max_w, int *max_h)
325 {
326 const struct coda_codec *codecs = dev->devtype->codecs;
327 int num_codecs = dev->devtype->num_codecs;
328 unsigned int w, h;
329 int k;
330
331 if (codec) {
332 w = codec->max_w;
333 h = codec->max_h;
334 } else {
335 for (k = 0, w = 0, h = 0; k < num_codecs; k++) {
336 w = max(w, codecs[k].max_w);
337 h = max(h, codecs[k].max_h);
338 }
339 }
340
341 if (max_w)
342 *max_w = w;
343 if (max_h)
344 *max_h = h;
345 }
346
to_coda_video_device(struct video_device * vdev)347 const struct coda_video_device *to_coda_video_device(struct video_device *vdev)
348 {
349 struct coda_dev *dev = video_get_drvdata(vdev);
350 unsigned int i = vdev - dev->vfd;
351
352 if (i >= dev->devtype->num_vdevs)
353 return NULL;
354
355 return dev->devtype->vdevs[i];
356 }
357
coda_product_name(int product)358 const char *coda_product_name(int product)
359 {
360 static char buf[9];
361
362 switch (product) {
363 case CODA_DX6:
364 return "CodaDx6";
365 case CODA_7541:
366 return "CODA7541";
367 case CODA_960:
368 return "CODA960";
369 default:
370 snprintf(buf, sizeof(buf), "(0x%04x)", product);
371 return buf;
372 }
373 }
374
375 /*
376 * V4L2 ioctl() operations.
377 */
coda_querycap(struct file * file,void * priv,struct v4l2_capability * cap)378 static int coda_querycap(struct file *file, void *priv,
379 struct v4l2_capability *cap)
380 {
381 struct coda_ctx *ctx = fh_to_ctx(priv);
382
383 strlcpy(cap->driver, CODA_NAME, sizeof(cap->driver));
384 strlcpy(cap->card, coda_product_name(ctx->dev->devtype->product),
385 sizeof(cap->card));
386 strlcpy(cap->bus_info, "platform:" CODA_NAME, sizeof(cap->bus_info));
387 cap->device_caps = V4L2_CAP_VIDEO_M2M | V4L2_CAP_STREAMING;
388 cap->capabilities = cap->device_caps | V4L2_CAP_DEVICE_CAPS;
389
390 return 0;
391 }
392
coda_enum_fmt(struct file * file,void * priv,struct v4l2_fmtdesc * f)393 static int coda_enum_fmt(struct file *file, void *priv,
394 struct v4l2_fmtdesc *f)
395 {
396 struct video_device *vdev = video_devdata(file);
397 const struct coda_video_device *cvd = to_coda_video_device(vdev);
398 const u32 *formats;
399 const char *name;
400
401 if (f->type == V4L2_BUF_TYPE_VIDEO_OUTPUT)
402 formats = cvd->src_formats;
403 else if (f->type == V4L2_BUF_TYPE_VIDEO_CAPTURE)
404 formats = cvd->dst_formats;
405 else
406 return -EINVAL;
407
408 if (f->index >= CODA_MAX_FORMATS || formats[f->index] == 0)
409 return -EINVAL;
410
411 name = coda_format_name(formats[f->index]);
412 strlcpy(f->description, name, sizeof(f->description));
413 f->pixelformat = formats[f->index];
414 if (!coda_format_is_yuv(formats[f->index]))
415 f->flags |= V4L2_FMT_FLAG_COMPRESSED;
416
417 return 0;
418 }
419
coda_g_fmt(struct file * file,void * priv,struct v4l2_format * f)420 static int coda_g_fmt(struct file *file, void *priv,
421 struct v4l2_format *f)
422 {
423 struct coda_q_data *q_data;
424 struct coda_ctx *ctx = fh_to_ctx(priv);
425
426 q_data = get_q_data(ctx, f->type);
427 if (!q_data)
428 return -EINVAL;
429
430 f->fmt.pix.field = V4L2_FIELD_NONE;
431 f->fmt.pix.pixelformat = q_data->fourcc;
432 f->fmt.pix.width = q_data->width;
433 f->fmt.pix.height = q_data->height;
434 f->fmt.pix.bytesperline = q_data->bytesperline;
435
436 f->fmt.pix.sizeimage = q_data->sizeimage;
437 if (f->fmt.pix.pixelformat == V4L2_PIX_FMT_JPEG)
438 f->fmt.pix.colorspace = V4L2_COLORSPACE_JPEG;
439 else
440 f->fmt.pix.colorspace = ctx->colorspace;
441
442 return 0;
443 }
444
coda_try_pixelformat(struct coda_ctx * ctx,struct v4l2_format * f)445 static int coda_try_pixelformat(struct coda_ctx *ctx, struct v4l2_format *f)
446 {
447 struct coda_q_data *q_data;
448 const u32 *formats;
449 int i;
450
451 if (f->type == V4L2_BUF_TYPE_VIDEO_OUTPUT)
452 formats = ctx->cvd->src_formats;
453 else if (f->type == V4L2_BUF_TYPE_VIDEO_CAPTURE)
454 formats = ctx->cvd->dst_formats;
455 else
456 return -EINVAL;
457
458 for (i = 0; i < CODA_MAX_FORMATS; i++) {
459 if (formats[i] == f->fmt.pix.pixelformat) {
460 f->fmt.pix.pixelformat = formats[i];
461 return 0;
462 }
463 }
464
465 /* Fall back to currently set pixelformat */
466 q_data = get_q_data(ctx, f->type);
467 f->fmt.pix.pixelformat = q_data->fourcc;
468
469 return 0;
470 }
471
coda_estimate_sizeimage(struct coda_ctx * ctx,u32 sizeimage,u32 width,u32 height)472 static unsigned int coda_estimate_sizeimage(struct coda_ctx *ctx, u32 sizeimage,
473 u32 width, u32 height)
474 {
475 /*
476 * This is a rough estimate for sensible compressed buffer
477 * sizes (between 1 and 16 bits per pixel). This could be
478 * improved by better format specific worst case estimates.
479 */
480 return round_up(clamp(sizeimage, width * height / 8,
481 width * height * 2), PAGE_SIZE);
482 }
483
coda_try_fmt(struct coda_ctx * ctx,const struct coda_codec * codec,struct v4l2_format * f)484 static int coda_try_fmt(struct coda_ctx *ctx, const struct coda_codec *codec,
485 struct v4l2_format *f)
486 {
487 struct coda_dev *dev = ctx->dev;
488 unsigned int max_w, max_h;
489 enum v4l2_field field;
490
491 field = f->fmt.pix.field;
492 if (field == V4L2_FIELD_ANY)
493 field = V4L2_FIELD_NONE;
494 else if (V4L2_FIELD_NONE != field)
495 return -EINVAL;
496
497 /* V4L2 specification suggests the driver corrects the format struct
498 * if any of the dimensions is unsupported */
499 f->fmt.pix.field = field;
500
501 coda_get_max_dimensions(dev, codec, &max_w, &max_h);
502 v4l_bound_align_image(&f->fmt.pix.width, MIN_W, max_w, W_ALIGN,
503 &f->fmt.pix.height, MIN_H, max_h, H_ALIGN,
504 S_ALIGN);
505
506 switch (f->fmt.pix.pixelformat) {
507 case V4L2_PIX_FMT_YUV420:
508 case V4L2_PIX_FMT_YVU420:
509 case V4L2_PIX_FMT_NV12:
510 /*
511 * Frame stride must be at least multiple of 8,
512 * but multiple of 16 for h.264 or JPEG 4:2:x
513 */
514 f->fmt.pix.bytesperline = round_up(f->fmt.pix.width, 16);
515 f->fmt.pix.sizeimage = f->fmt.pix.bytesperline *
516 f->fmt.pix.height * 3 / 2;
517 break;
518 case V4L2_PIX_FMT_YUV422P:
519 f->fmt.pix.bytesperline = round_up(f->fmt.pix.width, 16);
520 f->fmt.pix.sizeimage = f->fmt.pix.bytesperline *
521 f->fmt.pix.height * 2;
522 break;
523 case V4L2_PIX_FMT_JPEG:
524 f->fmt.pix.colorspace = V4L2_COLORSPACE_JPEG;
525 /* fallthrough */
526 case V4L2_PIX_FMT_H264:
527 case V4L2_PIX_FMT_MPEG4:
528 f->fmt.pix.bytesperline = 0;
529 f->fmt.pix.sizeimage = coda_estimate_sizeimage(ctx,
530 f->fmt.pix.sizeimage,
531 f->fmt.pix.width,
532 f->fmt.pix.height);
533 break;
534 default:
535 BUG();
536 }
537
538 return 0;
539 }
540
coda_try_fmt_vid_cap(struct file * file,void * priv,struct v4l2_format * f)541 static int coda_try_fmt_vid_cap(struct file *file, void *priv,
542 struct v4l2_format *f)
543 {
544 struct coda_ctx *ctx = fh_to_ctx(priv);
545 const struct coda_q_data *q_data_src;
546 const struct coda_codec *codec;
547 struct vb2_queue *src_vq;
548 int ret;
549
550 ret = coda_try_pixelformat(ctx, f);
551 if (ret < 0)
552 return ret;
553
554 q_data_src = get_q_data(ctx, V4L2_BUF_TYPE_VIDEO_OUTPUT);
555
556 /*
557 * If the source format is already fixed, only allow the same output
558 * resolution
559 */
560 src_vq = v4l2_m2m_get_vq(ctx->fh.m2m_ctx, V4L2_BUF_TYPE_VIDEO_OUTPUT);
561 if (vb2_is_streaming(src_vq)) {
562 f->fmt.pix.width = q_data_src->width;
563 f->fmt.pix.height = q_data_src->height;
564 }
565
566 f->fmt.pix.colorspace = ctx->colorspace;
567
568 q_data_src = get_q_data(ctx, V4L2_BUF_TYPE_VIDEO_OUTPUT);
569 codec = coda_find_codec(ctx->dev, q_data_src->fourcc,
570 f->fmt.pix.pixelformat);
571 if (!codec)
572 return -EINVAL;
573
574 ret = coda_try_fmt(ctx, codec, f);
575 if (ret < 0)
576 return ret;
577
578 /* The h.264 decoder only returns complete 16x16 macroblocks */
579 if (codec && codec->src_fourcc == V4L2_PIX_FMT_H264) {
580 f->fmt.pix.width = f->fmt.pix.width;
581 f->fmt.pix.height = round_up(f->fmt.pix.height, 16);
582 f->fmt.pix.bytesperline = round_up(f->fmt.pix.width, 16);
583 f->fmt.pix.sizeimage = f->fmt.pix.bytesperline *
584 f->fmt.pix.height * 3 / 2;
585 }
586
587 return 0;
588 }
589
coda_try_fmt_vid_out(struct file * file,void * priv,struct v4l2_format * f)590 static int coda_try_fmt_vid_out(struct file *file, void *priv,
591 struct v4l2_format *f)
592 {
593 struct coda_ctx *ctx = fh_to_ctx(priv);
594 struct coda_dev *dev = ctx->dev;
595 const struct coda_q_data *q_data_dst;
596 const struct coda_codec *codec;
597 int ret;
598
599 ret = coda_try_pixelformat(ctx, f);
600 if (ret < 0)
601 return ret;
602
603 switch (f->fmt.pix.colorspace) {
604 case V4L2_COLORSPACE_REC709:
605 case V4L2_COLORSPACE_JPEG:
606 break;
607 default:
608 if (f->fmt.pix.pixelformat == V4L2_PIX_FMT_JPEG)
609 f->fmt.pix.colorspace = V4L2_COLORSPACE_JPEG;
610 else
611 f->fmt.pix.colorspace = V4L2_COLORSPACE_REC709;
612 }
613
614 q_data_dst = get_q_data(ctx, V4L2_BUF_TYPE_VIDEO_CAPTURE);
615 codec = coda_find_codec(dev, f->fmt.pix.pixelformat, q_data_dst->fourcc);
616
617 return coda_try_fmt(ctx, codec, f);
618 }
619
coda_s_fmt(struct coda_ctx * ctx,struct v4l2_format * f)620 static int coda_s_fmt(struct coda_ctx *ctx, struct v4l2_format *f)
621 {
622 struct coda_q_data *q_data;
623 struct vb2_queue *vq;
624
625 vq = v4l2_m2m_get_vq(ctx->fh.m2m_ctx, f->type);
626 if (!vq)
627 return -EINVAL;
628
629 q_data = get_q_data(ctx, f->type);
630 if (!q_data)
631 return -EINVAL;
632
633 if (vb2_is_busy(vq)) {
634 v4l2_err(&ctx->dev->v4l2_dev, "%s queue busy\n", __func__);
635 return -EBUSY;
636 }
637
638 q_data->fourcc = f->fmt.pix.pixelformat;
639 q_data->width = f->fmt.pix.width;
640 q_data->height = f->fmt.pix.height;
641 q_data->bytesperline = f->fmt.pix.bytesperline;
642 q_data->sizeimage = f->fmt.pix.sizeimage;
643 q_data->rect.left = 0;
644 q_data->rect.top = 0;
645 q_data->rect.width = f->fmt.pix.width;
646 q_data->rect.height = f->fmt.pix.height;
647
648 v4l2_dbg(1, coda_debug, &ctx->dev->v4l2_dev,
649 "Setting format for type %d, wxh: %dx%d, fmt: %d\n",
650 f->type, q_data->width, q_data->height, q_data->fourcc);
651
652 return 0;
653 }
654
coda_s_fmt_vid_cap(struct file * file,void * priv,struct v4l2_format * f)655 static int coda_s_fmt_vid_cap(struct file *file, void *priv,
656 struct v4l2_format *f)
657 {
658 struct coda_ctx *ctx = fh_to_ctx(priv);
659 int ret;
660
661 ret = coda_try_fmt_vid_cap(file, priv, f);
662 if (ret)
663 return ret;
664
665 return coda_s_fmt(ctx, f);
666 }
667
coda_s_fmt_vid_out(struct file * file,void * priv,struct v4l2_format * f)668 static int coda_s_fmt_vid_out(struct file *file, void *priv,
669 struct v4l2_format *f)
670 {
671 struct coda_ctx *ctx = fh_to_ctx(priv);
672 struct v4l2_format f_cap;
673 int ret;
674
675 ret = coda_try_fmt_vid_out(file, priv, f);
676 if (ret)
677 return ret;
678
679 ret = coda_s_fmt(ctx, f);
680 if (ret)
681 return ret;
682
683 ctx->colorspace = f->fmt.pix.colorspace;
684
685 memset(&f_cap, 0, sizeof(f_cap));
686 f_cap.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
687 coda_g_fmt(file, priv, &f_cap);
688 f_cap.fmt.pix.width = f->fmt.pix.width;
689 f_cap.fmt.pix.height = f->fmt.pix.height;
690
691 ret = coda_try_fmt_vid_cap(file, priv, &f_cap);
692 if (ret)
693 return ret;
694
695 return coda_s_fmt(ctx, &f_cap);
696 }
697
coda_reqbufs(struct file * file,void * priv,struct v4l2_requestbuffers * rb)698 static int coda_reqbufs(struct file *file, void *priv,
699 struct v4l2_requestbuffers *rb)
700 {
701 struct coda_ctx *ctx = fh_to_ctx(priv);
702 int ret;
703
704 ret = v4l2_m2m_reqbufs(file, ctx->fh.m2m_ctx, rb);
705 if (ret)
706 return ret;
707
708 /*
709 * Allow to allocate instance specific per-context buffers, such as
710 * bitstream ringbuffer, slice buffer, work buffer, etc. if needed.
711 */
712 if (rb->type == V4L2_BUF_TYPE_VIDEO_OUTPUT && ctx->ops->reqbufs)
713 return ctx->ops->reqbufs(ctx, rb);
714
715 return 0;
716 }
717
coda_qbuf(struct file * file,void * priv,struct v4l2_buffer * buf)718 static int coda_qbuf(struct file *file, void *priv,
719 struct v4l2_buffer *buf)
720 {
721 struct coda_ctx *ctx = fh_to_ctx(priv);
722
723 return v4l2_m2m_qbuf(file, ctx->fh.m2m_ctx, buf);
724 }
725
coda_buf_is_end_of_stream(struct coda_ctx * ctx,struct v4l2_buffer * buf)726 static bool coda_buf_is_end_of_stream(struct coda_ctx *ctx,
727 struct v4l2_buffer *buf)
728 {
729 struct vb2_queue *src_vq;
730
731 src_vq = v4l2_m2m_get_vq(ctx->fh.m2m_ctx, V4L2_BUF_TYPE_VIDEO_OUTPUT);
732
733 return ((ctx->bit_stream_param & CODA_BIT_STREAM_END_FLAG) &&
734 (buf->sequence == (ctx->qsequence - 1)));
735 }
736
coda_dqbuf(struct file * file,void * priv,struct v4l2_buffer * buf)737 static int coda_dqbuf(struct file *file, void *priv,
738 struct v4l2_buffer *buf)
739 {
740 struct coda_ctx *ctx = fh_to_ctx(priv);
741 int ret;
742
743 ret = v4l2_m2m_dqbuf(file, ctx->fh.m2m_ctx, buf);
744
745 /* If this is the last capture buffer, emit an end-of-stream event */
746 if (buf->type == V4L2_BUF_TYPE_VIDEO_CAPTURE &&
747 coda_buf_is_end_of_stream(ctx, buf)) {
748 const struct v4l2_event eos_event = {
749 .type = V4L2_EVENT_EOS
750 };
751
752 v4l2_event_queue_fh(&ctx->fh, &eos_event);
753 }
754
755 return ret;
756 }
757
coda_g_selection(struct file * file,void * fh,struct v4l2_selection * s)758 static int coda_g_selection(struct file *file, void *fh,
759 struct v4l2_selection *s)
760 {
761 struct coda_ctx *ctx = fh_to_ctx(fh);
762 struct coda_q_data *q_data;
763 struct v4l2_rect r, *rsel;
764
765 q_data = get_q_data(ctx, s->type);
766 if (!q_data)
767 return -EINVAL;
768
769 r.left = 0;
770 r.top = 0;
771 r.width = q_data->width;
772 r.height = q_data->height;
773 rsel = &q_data->rect;
774
775 switch (s->target) {
776 case V4L2_SEL_TGT_CROP_DEFAULT:
777 case V4L2_SEL_TGT_CROP_BOUNDS:
778 rsel = &r;
779 /* fallthrough */
780 case V4L2_SEL_TGT_CROP:
781 if (s->type != V4L2_BUF_TYPE_VIDEO_OUTPUT)
782 return -EINVAL;
783 break;
784 case V4L2_SEL_TGT_COMPOSE_BOUNDS:
785 case V4L2_SEL_TGT_COMPOSE_PADDED:
786 rsel = &r;
787 /* fallthrough */
788 case V4L2_SEL_TGT_COMPOSE:
789 case V4L2_SEL_TGT_COMPOSE_DEFAULT:
790 if (s->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
791 return -EINVAL;
792 break;
793 default:
794 return -EINVAL;
795 }
796
797 s->r = *rsel;
798
799 return 0;
800 }
801
coda_try_decoder_cmd(struct file * file,void * fh,struct v4l2_decoder_cmd * dc)802 static int coda_try_decoder_cmd(struct file *file, void *fh,
803 struct v4l2_decoder_cmd *dc)
804 {
805 if (dc->cmd != V4L2_DEC_CMD_STOP)
806 return -EINVAL;
807
808 if (dc->flags & V4L2_DEC_CMD_STOP_TO_BLACK)
809 return -EINVAL;
810
811 if (!(dc->flags & V4L2_DEC_CMD_STOP_IMMEDIATELY) && (dc->stop.pts != 0))
812 return -EINVAL;
813
814 return 0;
815 }
816
coda_decoder_cmd(struct file * file,void * fh,struct v4l2_decoder_cmd * dc)817 static int coda_decoder_cmd(struct file *file, void *fh,
818 struct v4l2_decoder_cmd *dc)
819 {
820 struct coda_ctx *ctx = fh_to_ctx(fh);
821 int ret;
822
823 ret = coda_try_decoder_cmd(file, fh, dc);
824 if (ret < 0)
825 return ret;
826
827 /* Ignore decoder stop command silently in encoder context */
828 if (ctx->inst_type != CODA_INST_DECODER)
829 return 0;
830
831 /* Set the stream-end flag on this context */
832 coda_bit_stream_end_flag(ctx);
833 ctx->hold = false;
834 v4l2_m2m_try_schedule(ctx->fh.m2m_ctx);
835
836 return 0;
837 }
838
coda_subscribe_event(struct v4l2_fh * fh,const struct v4l2_event_subscription * sub)839 static int coda_subscribe_event(struct v4l2_fh *fh,
840 const struct v4l2_event_subscription *sub)
841 {
842 switch (sub->type) {
843 case V4L2_EVENT_EOS:
844 return v4l2_event_subscribe(fh, sub, 0, NULL);
845 default:
846 return v4l2_ctrl_subscribe_event(fh, sub);
847 }
848 }
849
850 static const struct v4l2_ioctl_ops coda_ioctl_ops = {
851 .vidioc_querycap = coda_querycap,
852
853 .vidioc_enum_fmt_vid_cap = coda_enum_fmt,
854 .vidioc_g_fmt_vid_cap = coda_g_fmt,
855 .vidioc_try_fmt_vid_cap = coda_try_fmt_vid_cap,
856 .vidioc_s_fmt_vid_cap = coda_s_fmt_vid_cap,
857
858 .vidioc_enum_fmt_vid_out = coda_enum_fmt,
859 .vidioc_g_fmt_vid_out = coda_g_fmt,
860 .vidioc_try_fmt_vid_out = coda_try_fmt_vid_out,
861 .vidioc_s_fmt_vid_out = coda_s_fmt_vid_out,
862
863 .vidioc_reqbufs = coda_reqbufs,
864 .vidioc_querybuf = v4l2_m2m_ioctl_querybuf,
865
866 .vidioc_qbuf = coda_qbuf,
867 .vidioc_expbuf = v4l2_m2m_ioctl_expbuf,
868 .vidioc_dqbuf = coda_dqbuf,
869 .vidioc_create_bufs = v4l2_m2m_ioctl_create_bufs,
870
871 .vidioc_streamon = v4l2_m2m_ioctl_streamon,
872 .vidioc_streamoff = v4l2_m2m_ioctl_streamoff,
873
874 .vidioc_g_selection = coda_g_selection,
875
876 .vidioc_try_decoder_cmd = coda_try_decoder_cmd,
877 .vidioc_decoder_cmd = coda_decoder_cmd,
878
879 .vidioc_subscribe_event = coda_subscribe_event,
880 .vidioc_unsubscribe_event = v4l2_event_unsubscribe,
881 };
882
coda_set_gdi_regs(struct coda_ctx * ctx)883 void coda_set_gdi_regs(struct coda_ctx *ctx)
884 {
885 struct gdi_tiled_map *tiled_map = &ctx->tiled_map;
886 struct coda_dev *dev = ctx->dev;
887 int i;
888
889 for (i = 0; i < 16; i++)
890 coda_write(dev, tiled_map->xy2ca_map[i],
891 CODA9_GDI_XY2_CAS_0 + 4 * i);
892 for (i = 0; i < 4; i++)
893 coda_write(dev, tiled_map->xy2ba_map[i],
894 CODA9_GDI_XY2_BA_0 + 4 * i);
895 for (i = 0; i < 16; i++)
896 coda_write(dev, tiled_map->xy2ra_map[i],
897 CODA9_GDI_XY2_RAS_0 + 4 * i);
898 coda_write(dev, tiled_map->xy2rbc_config, CODA9_GDI_XY2_RBC_CONFIG);
899 for (i = 0; i < 32; i++)
900 coda_write(dev, tiled_map->rbc2axi_map[i],
901 CODA9_GDI_RBC2_AXI_0 + 4 * i);
902 }
903
904 /*
905 * Mem-to-mem operations.
906 */
907
coda_device_run(void * m2m_priv)908 static void coda_device_run(void *m2m_priv)
909 {
910 struct coda_ctx *ctx = m2m_priv;
911 struct coda_dev *dev = ctx->dev;
912
913 queue_work(dev->workqueue, &ctx->pic_run_work);
914 }
915
coda_pic_run_work(struct work_struct * work)916 static void coda_pic_run_work(struct work_struct *work)
917 {
918 struct coda_ctx *ctx = container_of(work, struct coda_ctx, pic_run_work);
919 struct coda_dev *dev = ctx->dev;
920 int ret;
921
922 mutex_lock(&ctx->buffer_mutex);
923 mutex_lock(&dev->coda_mutex);
924
925 ret = ctx->ops->prepare_run(ctx);
926 if (ret < 0 && ctx->inst_type == CODA_INST_DECODER) {
927 mutex_unlock(&dev->coda_mutex);
928 mutex_unlock(&ctx->buffer_mutex);
929 /* job_finish scheduled by prepare_decode */
930 return;
931 }
932
933 if (!wait_for_completion_timeout(&ctx->completion,
934 msecs_to_jiffies(1000))) {
935 dev_err(&dev->plat_dev->dev, "CODA PIC_RUN timeout\n");
936
937 ctx->hold = true;
938
939 coda_hw_reset(ctx);
940 } else if (!ctx->aborting) {
941 ctx->ops->finish_run(ctx);
942 }
943
944 if ((ctx->aborting || (!ctx->streamon_cap && !ctx->streamon_out)) &&
945 ctx->ops->seq_end_work)
946 queue_work(dev->workqueue, &ctx->seq_end_work);
947
948 mutex_unlock(&dev->coda_mutex);
949 mutex_unlock(&ctx->buffer_mutex);
950
951 v4l2_m2m_job_finish(ctx->dev->m2m_dev, ctx->fh.m2m_ctx);
952 }
953
coda_job_ready(void * m2m_priv)954 static int coda_job_ready(void *m2m_priv)
955 {
956 struct coda_ctx *ctx = m2m_priv;
957
958 /*
959 * For both 'P' and 'key' frame cases 1 picture
960 * and 1 frame are needed. In the decoder case,
961 * the compressed frame can be in the bitstream.
962 */
963 if (!v4l2_m2m_num_src_bufs_ready(ctx->fh.m2m_ctx) &&
964 ctx->inst_type != CODA_INST_DECODER) {
965 v4l2_dbg(1, coda_debug, &ctx->dev->v4l2_dev,
966 "not ready: not enough video buffers.\n");
967 return 0;
968 }
969
970 if (!v4l2_m2m_num_dst_bufs_ready(ctx->fh.m2m_ctx)) {
971 v4l2_dbg(1, coda_debug, &ctx->dev->v4l2_dev,
972 "not ready: not enough video capture buffers.\n");
973 return 0;
974 }
975
976 if (ctx->inst_type == CODA_INST_DECODER && ctx->use_bit) {
977 struct list_head *meta;
978 bool stream_end;
979 int num_metas;
980 int src_bufs;
981
982 if (ctx->hold && !v4l2_m2m_num_src_bufs_ready(ctx->fh.m2m_ctx)) {
983 v4l2_dbg(1, coda_debug, &ctx->dev->v4l2_dev,
984 "%d: not ready: on hold for more buffers.\n",
985 ctx->idx);
986 return 0;
987 }
988
989 stream_end = ctx->bit_stream_param &
990 CODA_BIT_STREAM_END_FLAG;
991
992 num_metas = 0;
993 list_for_each(meta, &ctx->buffer_meta_list)
994 num_metas++;
995
996 src_bufs = v4l2_m2m_num_src_bufs_ready(ctx->fh.m2m_ctx);
997
998 if (!stream_end && (num_metas + src_bufs) < 2) {
999 v4l2_dbg(1, coda_debug, &ctx->dev->v4l2_dev,
1000 "%d: not ready: need 2 buffers available (%d, %d)\n",
1001 ctx->idx, num_metas, src_bufs);
1002 return 0;
1003 }
1004
1005
1006 if (!v4l2_m2m_num_src_bufs_ready(ctx->fh.m2m_ctx) &&
1007 !stream_end && (coda_get_bitstream_payload(ctx) < 512)) {
1008 v4l2_dbg(1, coda_debug, &ctx->dev->v4l2_dev,
1009 "%d: not ready: not enough bitstream data (%d).\n",
1010 ctx->idx, coda_get_bitstream_payload(ctx));
1011 return 0;
1012 }
1013 }
1014
1015 if (ctx->aborting) {
1016 v4l2_dbg(1, coda_debug, &ctx->dev->v4l2_dev,
1017 "not ready: aborting\n");
1018 return 0;
1019 }
1020
1021 v4l2_dbg(1, coda_debug, &ctx->dev->v4l2_dev,
1022 "job ready\n");
1023 return 1;
1024 }
1025
coda_job_abort(void * priv)1026 static void coda_job_abort(void *priv)
1027 {
1028 struct coda_ctx *ctx = priv;
1029
1030 ctx->aborting = 1;
1031
1032 v4l2_dbg(1, coda_debug, &ctx->dev->v4l2_dev,
1033 "Aborting task\n");
1034 }
1035
coda_lock(void * m2m_priv)1036 static void coda_lock(void *m2m_priv)
1037 {
1038 struct coda_ctx *ctx = m2m_priv;
1039 struct coda_dev *pcdev = ctx->dev;
1040
1041 mutex_lock(&pcdev->dev_mutex);
1042 }
1043
coda_unlock(void * m2m_priv)1044 static void coda_unlock(void *m2m_priv)
1045 {
1046 struct coda_ctx *ctx = m2m_priv;
1047 struct coda_dev *pcdev = ctx->dev;
1048
1049 mutex_unlock(&pcdev->dev_mutex);
1050 }
1051
1052 static const struct v4l2_m2m_ops coda_m2m_ops = {
1053 .device_run = coda_device_run,
1054 .job_ready = coda_job_ready,
1055 .job_abort = coda_job_abort,
1056 .lock = coda_lock,
1057 .unlock = coda_unlock,
1058 };
1059
coda_set_tiled_map_type(struct coda_ctx * ctx,int tiled_map_type)1060 static void coda_set_tiled_map_type(struct coda_ctx *ctx, int tiled_map_type)
1061 {
1062 struct gdi_tiled_map *tiled_map = &ctx->tiled_map;
1063 int luma_map, chro_map, i;
1064
1065 memset(tiled_map, 0, sizeof(*tiled_map));
1066
1067 luma_map = 64;
1068 chro_map = 64;
1069 tiled_map->map_type = tiled_map_type;
1070 for (i = 0; i < 16; i++)
1071 tiled_map->xy2ca_map[i] = luma_map << 8 | chro_map;
1072 for (i = 0; i < 4; i++)
1073 tiled_map->xy2ba_map[i] = luma_map << 8 | chro_map;
1074 for (i = 0; i < 16; i++)
1075 tiled_map->xy2ra_map[i] = luma_map << 8 | chro_map;
1076
1077 if (tiled_map_type == GDI_LINEAR_FRAME_MAP) {
1078 tiled_map->xy2rbc_config = 0;
1079 } else {
1080 dev_err(&ctx->dev->plat_dev->dev, "invalid map type: %d\n",
1081 tiled_map_type);
1082 return;
1083 }
1084 }
1085
set_default_params(struct coda_ctx * ctx)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->codec->src_fourcc;
1103 ctx->q_data[V4L2_M2M_DST].fourcc = ctx->codec->dst_fourcc;
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 if (ctx->dev->devtype->product == CODA_960)
1125 coda_set_tiled_map_type(ctx, GDI_LINEAR_FRAME_MAP);
1126 }
1127
1128 /*
1129 * Queue operations
1130 */
coda_queue_setup(struct vb2_queue * vq,const struct v4l2_format * fmt,unsigned int * nbuffers,unsigned int * nplanes,unsigned int sizes[],void * alloc_ctxs[])1131 static int coda_queue_setup(struct vb2_queue *vq,
1132 const struct v4l2_format *fmt,
1133 unsigned int *nbuffers, unsigned int *nplanes,
1134 unsigned int sizes[], void *alloc_ctxs[])
1135 {
1136 struct coda_ctx *ctx = vb2_get_drv_priv(vq);
1137 struct coda_q_data *q_data;
1138 unsigned int size;
1139
1140 q_data = get_q_data(ctx, vq->type);
1141 size = q_data->sizeimage;
1142
1143 *nplanes = 1;
1144 sizes[0] = size;
1145
1146 /* Set to vb2-dma-contig allocator context, ignored by vb2-vmalloc */
1147 alloc_ctxs[0] = ctx->dev->alloc_ctx;
1148
1149 v4l2_dbg(1, coda_debug, &ctx->dev->v4l2_dev,
1150 "get %d buffer(s) of size %d each.\n", *nbuffers, size);
1151
1152 return 0;
1153 }
1154
coda_buf_prepare(struct vb2_buffer * vb)1155 static int coda_buf_prepare(struct vb2_buffer *vb)
1156 {
1157 struct coda_ctx *ctx = vb2_get_drv_priv(vb->vb2_queue);
1158 struct coda_q_data *q_data;
1159
1160 q_data = get_q_data(ctx, vb->vb2_queue->type);
1161
1162 if (vb2_plane_size(vb, 0) < q_data->sizeimage) {
1163 v4l2_warn(&ctx->dev->v4l2_dev,
1164 "%s data will not fit into plane (%lu < %lu)\n",
1165 __func__, vb2_plane_size(vb, 0),
1166 (long)q_data->sizeimage);
1167 return -EINVAL;
1168 }
1169
1170 return 0;
1171 }
1172
coda_buf_queue(struct vb2_buffer * vb)1173 static void coda_buf_queue(struct vb2_buffer *vb)
1174 {
1175 struct coda_ctx *ctx = vb2_get_drv_priv(vb->vb2_queue);
1176 struct vb2_queue *vq = vb->vb2_queue;
1177 struct coda_q_data *q_data;
1178
1179 q_data = get_q_data(ctx, vb->vb2_queue->type);
1180
1181 /*
1182 * In the decoder case, immediately try to copy the buffer into the
1183 * bitstream ringbuffer and mark it as ready to be dequeued.
1184 */
1185 if (ctx->bitstream.size && vq->type == V4L2_BUF_TYPE_VIDEO_OUTPUT) {
1186 /*
1187 * For backwards compatibility, queuing an empty buffer marks
1188 * the stream end
1189 */
1190 if (vb2_get_plane_payload(vb, 0) == 0)
1191 coda_bit_stream_end_flag(ctx);
1192 mutex_lock(&ctx->bitstream_mutex);
1193 v4l2_m2m_buf_queue(ctx->fh.m2m_ctx, vb);
1194 if (vb2_is_streaming(vb->vb2_queue))
1195 coda_fill_bitstream(ctx, true);
1196 mutex_unlock(&ctx->bitstream_mutex);
1197 } else {
1198 v4l2_m2m_buf_queue(ctx->fh.m2m_ctx, vb);
1199 }
1200 }
1201
coda_alloc_aux_buf(struct coda_dev * dev,struct coda_aux_buf * buf,size_t size,const char * name,struct dentry * parent)1202 int coda_alloc_aux_buf(struct coda_dev *dev, struct coda_aux_buf *buf,
1203 size_t size, const char *name, struct dentry *parent)
1204 {
1205 buf->vaddr = dma_alloc_coherent(&dev->plat_dev->dev, size, &buf->paddr,
1206 GFP_KERNEL);
1207 if (!buf->vaddr) {
1208 v4l2_err(&dev->v4l2_dev,
1209 "Failed to allocate %s buffer of size %u\n",
1210 name, size);
1211 return -ENOMEM;
1212 }
1213
1214 buf->size = size;
1215
1216 if (name && parent) {
1217 buf->blob.data = buf->vaddr;
1218 buf->blob.size = size;
1219 buf->dentry = debugfs_create_blob(name, 0644, parent,
1220 &buf->blob);
1221 if (!buf->dentry)
1222 dev_warn(&dev->plat_dev->dev,
1223 "failed to create debugfs entry %s\n", name);
1224 }
1225
1226 return 0;
1227 }
1228
coda_free_aux_buf(struct coda_dev * dev,struct coda_aux_buf * buf)1229 void coda_free_aux_buf(struct coda_dev *dev,
1230 struct coda_aux_buf *buf)
1231 {
1232 if (buf->vaddr) {
1233 dma_free_coherent(&dev->plat_dev->dev, buf->size,
1234 buf->vaddr, buf->paddr);
1235 buf->vaddr = NULL;
1236 buf->size = 0;
1237 debugfs_remove(buf->dentry);
1238 buf->dentry = NULL;
1239 }
1240 }
1241
coda_start_streaming(struct vb2_queue * q,unsigned int count)1242 static int coda_start_streaming(struct vb2_queue *q, unsigned int count)
1243 {
1244 struct coda_ctx *ctx = vb2_get_drv_priv(q);
1245 struct v4l2_device *v4l2_dev = &ctx->dev->v4l2_dev;
1246 struct coda_q_data *q_data_src, *q_data_dst;
1247 struct vb2_buffer *buf;
1248 int ret = 0;
1249
1250 q_data_src = get_q_data(ctx, V4L2_BUF_TYPE_VIDEO_OUTPUT);
1251 if (q->type == V4L2_BUF_TYPE_VIDEO_OUTPUT) {
1252 if (q_data_src->fourcc == V4L2_PIX_FMT_H264 ||
1253 (q_data_src->fourcc == V4L2_PIX_FMT_JPEG &&
1254 ctx->dev->devtype->product == CODA_7541)) {
1255 /* copy the buffers that were queued before streamon */
1256 mutex_lock(&ctx->bitstream_mutex);
1257 coda_fill_bitstream(ctx, false);
1258 mutex_unlock(&ctx->bitstream_mutex);
1259
1260 if (coda_get_bitstream_payload(ctx) < 512) {
1261 ret = -EINVAL;
1262 goto err;
1263 }
1264 } else {
1265 if (count < 1) {
1266 ret = -EINVAL;
1267 goto err;
1268 }
1269 }
1270
1271 ctx->streamon_out = 1;
1272 } else {
1273 if (count < 1) {
1274 ret = -EINVAL;
1275 goto err;
1276 }
1277
1278 ctx->streamon_cap = 1;
1279 }
1280
1281 /* Don't start the coda unless both queues are on */
1282 if (!(ctx->streamon_out & ctx->streamon_cap))
1283 return 0;
1284
1285 q_data_dst = get_q_data(ctx, V4L2_BUF_TYPE_VIDEO_CAPTURE);
1286 if ((q_data_src->width != q_data_dst->width &&
1287 round_up(q_data_src->width, 16) != q_data_dst->width) ||
1288 (q_data_src->height != q_data_dst->height &&
1289 round_up(q_data_src->height, 16) != q_data_dst->height)) {
1290 v4l2_err(v4l2_dev, "can't convert %dx%d to %dx%d\n",
1291 q_data_src->width, q_data_src->height,
1292 q_data_dst->width, q_data_dst->height);
1293 ret = -EINVAL;
1294 goto err;
1295 }
1296
1297 /* Allow BIT decoder device_run with no new buffers queued */
1298 if (ctx->inst_type == CODA_INST_DECODER && ctx->use_bit)
1299 v4l2_m2m_set_src_buffered(ctx->fh.m2m_ctx, true);
1300
1301 ctx->gopcounter = ctx->params.gop_size - 1;
1302
1303 ctx->codec = coda_find_codec(ctx->dev, q_data_src->fourcc,
1304 q_data_dst->fourcc);
1305 if (!ctx->codec) {
1306 v4l2_err(v4l2_dev, "couldn't tell instance type.\n");
1307 ret = -EINVAL;
1308 goto err;
1309 }
1310
1311 if (q_data_dst->fourcc == V4L2_PIX_FMT_JPEG)
1312 ctx->params.gop_size = 1;
1313 ctx->gopcounter = ctx->params.gop_size - 1;
1314
1315 ret = ctx->ops->start_streaming(ctx);
1316 if (ctx->inst_type == CODA_INST_DECODER) {
1317 if (ret == -EAGAIN)
1318 return 0;
1319 else if (ret < 0)
1320 goto err;
1321 }
1322
1323 ctx->initialized = 1;
1324 return ret;
1325
1326 err:
1327 if (q->type == V4L2_BUF_TYPE_VIDEO_OUTPUT) {
1328 while ((buf = v4l2_m2m_src_buf_remove(ctx->fh.m2m_ctx)))
1329 v4l2_m2m_buf_done(buf, VB2_BUF_STATE_QUEUED);
1330 } else {
1331 while ((buf = v4l2_m2m_dst_buf_remove(ctx->fh.m2m_ctx)))
1332 v4l2_m2m_buf_done(buf, VB2_BUF_STATE_QUEUED);
1333 }
1334 return ret;
1335 }
1336
coda_stop_streaming(struct vb2_queue * q)1337 static void coda_stop_streaming(struct vb2_queue *q)
1338 {
1339 struct coda_ctx *ctx = vb2_get_drv_priv(q);
1340 struct coda_dev *dev = ctx->dev;
1341 struct vb2_buffer *buf;
1342 bool stop;
1343
1344 stop = ctx->streamon_out && ctx->streamon_cap;
1345
1346 if (q->type == V4L2_BUF_TYPE_VIDEO_OUTPUT) {
1347 v4l2_dbg(1, coda_debug, &dev->v4l2_dev,
1348 "%s: output\n", __func__);
1349 ctx->streamon_out = 0;
1350
1351 coda_bit_stream_end_flag(ctx);
1352
1353 ctx->qsequence = 0;
1354
1355 while ((buf = v4l2_m2m_src_buf_remove(ctx->fh.m2m_ctx)))
1356 v4l2_m2m_buf_done(buf, VB2_BUF_STATE_ERROR);
1357 } else {
1358 v4l2_dbg(1, coda_debug, &dev->v4l2_dev,
1359 "%s: capture\n", __func__);
1360 ctx->streamon_cap = 0;
1361
1362 ctx->osequence = 0;
1363 ctx->sequence_offset = 0;
1364
1365 while ((buf = v4l2_m2m_dst_buf_remove(ctx->fh.m2m_ctx)))
1366 v4l2_m2m_buf_done(buf, VB2_BUF_STATE_ERROR);
1367 }
1368
1369 if (stop) {
1370 struct coda_buffer_meta *meta;
1371
1372 if (ctx->ops->seq_end_work) {
1373 queue_work(dev->workqueue, &ctx->seq_end_work);
1374 flush_work(&ctx->seq_end_work);
1375 }
1376 mutex_lock(&ctx->bitstream_mutex);
1377 while (!list_empty(&ctx->buffer_meta_list)) {
1378 meta = list_first_entry(&ctx->buffer_meta_list,
1379 struct coda_buffer_meta, list);
1380 list_del(&meta->list);
1381 kfree(meta);
1382 }
1383 mutex_unlock(&ctx->bitstream_mutex);
1384 kfifo_init(&ctx->bitstream_fifo,
1385 ctx->bitstream.vaddr, ctx->bitstream.size);
1386 ctx->initialized = 0;
1387 ctx->runcounter = 0;
1388 ctx->aborting = 0;
1389 }
1390 }
1391
1392 static const struct vb2_ops coda_qops = {
1393 .queue_setup = coda_queue_setup,
1394 .buf_prepare = coda_buf_prepare,
1395 .buf_queue = coda_buf_queue,
1396 .start_streaming = coda_start_streaming,
1397 .stop_streaming = coda_stop_streaming,
1398 .wait_prepare = vb2_ops_wait_prepare,
1399 .wait_finish = vb2_ops_wait_finish,
1400 };
1401
coda_s_ctrl(struct v4l2_ctrl * ctrl)1402 static int coda_s_ctrl(struct v4l2_ctrl *ctrl)
1403 {
1404 struct coda_ctx *ctx =
1405 container_of(ctrl->handler, struct coda_ctx, ctrls);
1406
1407 v4l2_dbg(1, coda_debug, &ctx->dev->v4l2_dev,
1408 "s_ctrl: id = %d, val = %d\n", ctrl->id, ctrl->val);
1409
1410 switch (ctrl->id) {
1411 case V4L2_CID_HFLIP:
1412 if (ctrl->val)
1413 ctx->params.rot_mode |= CODA_MIR_HOR;
1414 else
1415 ctx->params.rot_mode &= ~CODA_MIR_HOR;
1416 break;
1417 case V4L2_CID_VFLIP:
1418 if (ctrl->val)
1419 ctx->params.rot_mode |= CODA_MIR_VER;
1420 else
1421 ctx->params.rot_mode &= ~CODA_MIR_VER;
1422 break;
1423 case V4L2_CID_MPEG_VIDEO_BITRATE:
1424 ctx->params.bitrate = ctrl->val / 1000;
1425 break;
1426 case V4L2_CID_MPEG_VIDEO_GOP_SIZE:
1427 ctx->params.gop_size = ctrl->val;
1428 break;
1429 case V4L2_CID_MPEG_VIDEO_H264_I_FRAME_QP:
1430 ctx->params.h264_intra_qp = ctrl->val;
1431 break;
1432 case V4L2_CID_MPEG_VIDEO_H264_P_FRAME_QP:
1433 ctx->params.h264_inter_qp = ctrl->val;
1434 break;
1435 case V4L2_CID_MPEG_VIDEO_H264_MIN_QP:
1436 ctx->params.h264_min_qp = ctrl->val;
1437 break;
1438 case V4L2_CID_MPEG_VIDEO_H264_MAX_QP:
1439 ctx->params.h264_max_qp = ctrl->val;
1440 break;
1441 case V4L2_CID_MPEG_VIDEO_H264_LOOP_FILTER_ALPHA:
1442 ctx->params.h264_deblk_alpha = ctrl->val;
1443 break;
1444 case V4L2_CID_MPEG_VIDEO_H264_LOOP_FILTER_BETA:
1445 ctx->params.h264_deblk_beta = ctrl->val;
1446 break;
1447 case V4L2_CID_MPEG_VIDEO_H264_LOOP_FILTER_MODE:
1448 ctx->params.h264_deblk_enabled = (ctrl->val ==
1449 V4L2_MPEG_VIDEO_H264_LOOP_FILTER_MODE_ENABLED);
1450 break;
1451 case V4L2_CID_MPEG_VIDEO_MPEG4_I_FRAME_QP:
1452 ctx->params.mpeg4_intra_qp = ctrl->val;
1453 break;
1454 case V4L2_CID_MPEG_VIDEO_MPEG4_P_FRAME_QP:
1455 ctx->params.mpeg4_inter_qp = ctrl->val;
1456 break;
1457 case V4L2_CID_MPEG_VIDEO_MULTI_SLICE_MODE:
1458 ctx->params.slice_mode = ctrl->val;
1459 break;
1460 case V4L2_CID_MPEG_VIDEO_MULTI_SLICE_MAX_MB:
1461 ctx->params.slice_max_mb = ctrl->val;
1462 break;
1463 case V4L2_CID_MPEG_VIDEO_MULTI_SLICE_MAX_BYTES:
1464 ctx->params.slice_max_bits = ctrl->val * 8;
1465 break;
1466 case V4L2_CID_MPEG_VIDEO_HEADER_MODE:
1467 break;
1468 case V4L2_CID_MPEG_VIDEO_CYCLIC_INTRA_REFRESH_MB:
1469 ctx->params.intra_refresh = ctrl->val;
1470 break;
1471 case V4L2_CID_JPEG_COMPRESSION_QUALITY:
1472 coda_set_jpeg_compression_quality(ctx, ctrl->val);
1473 break;
1474 case V4L2_CID_JPEG_RESTART_INTERVAL:
1475 ctx->params.jpeg_restart_interval = ctrl->val;
1476 break;
1477 default:
1478 v4l2_dbg(1, coda_debug, &ctx->dev->v4l2_dev,
1479 "Invalid control, id=%d, val=%d\n",
1480 ctrl->id, ctrl->val);
1481 return -EINVAL;
1482 }
1483
1484 return 0;
1485 }
1486
1487 static const struct v4l2_ctrl_ops coda_ctrl_ops = {
1488 .s_ctrl = coda_s_ctrl,
1489 };
1490
coda_encode_ctrls(struct coda_ctx * ctx)1491 static void coda_encode_ctrls(struct coda_ctx *ctx)
1492 {
1493 v4l2_ctrl_new_std(&ctx->ctrls, &coda_ctrl_ops,
1494 V4L2_CID_MPEG_VIDEO_BITRATE, 0, 32767000, 1000, 0);
1495 v4l2_ctrl_new_std(&ctx->ctrls, &coda_ctrl_ops,
1496 V4L2_CID_MPEG_VIDEO_GOP_SIZE, 1, 60, 1, 16);
1497 v4l2_ctrl_new_std(&ctx->ctrls, &coda_ctrl_ops,
1498 V4L2_CID_MPEG_VIDEO_H264_I_FRAME_QP, 0, 51, 1, 25);
1499 v4l2_ctrl_new_std(&ctx->ctrls, &coda_ctrl_ops,
1500 V4L2_CID_MPEG_VIDEO_H264_P_FRAME_QP, 0, 51, 1, 25);
1501 if (ctx->dev->devtype->product != CODA_960) {
1502 v4l2_ctrl_new_std(&ctx->ctrls, &coda_ctrl_ops,
1503 V4L2_CID_MPEG_VIDEO_H264_MIN_QP, 0, 51, 1, 12);
1504 }
1505 v4l2_ctrl_new_std(&ctx->ctrls, &coda_ctrl_ops,
1506 V4L2_CID_MPEG_VIDEO_H264_MAX_QP, 0, 51, 1, 51);
1507 v4l2_ctrl_new_std(&ctx->ctrls, &coda_ctrl_ops,
1508 V4L2_CID_MPEG_VIDEO_H264_LOOP_FILTER_ALPHA, 0, 15, 1, 0);
1509 v4l2_ctrl_new_std(&ctx->ctrls, &coda_ctrl_ops,
1510 V4L2_CID_MPEG_VIDEO_H264_LOOP_FILTER_BETA, 0, 15, 1, 0);
1511 v4l2_ctrl_new_std_menu(&ctx->ctrls, &coda_ctrl_ops,
1512 V4L2_CID_MPEG_VIDEO_H264_LOOP_FILTER_MODE,
1513 V4L2_MPEG_VIDEO_H264_LOOP_FILTER_MODE_DISABLED, 0x0,
1514 V4L2_MPEG_VIDEO_H264_LOOP_FILTER_MODE_ENABLED);
1515 v4l2_ctrl_new_std(&ctx->ctrls, &coda_ctrl_ops,
1516 V4L2_CID_MPEG_VIDEO_MPEG4_I_FRAME_QP, 1, 31, 1, 2);
1517 v4l2_ctrl_new_std(&ctx->ctrls, &coda_ctrl_ops,
1518 V4L2_CID_MPEG_VIDEO_MPEG4_P_FRAME_QP, 1, 31, 1, 2);
1519 v4l2_ctrl_new_std_menu(&ctx->ctrls, &coda_ctrl_ops,
1520 V4L2_CID_MPEG_VIDEO_MULTI_SLICE_MODE,
1521 V4L2_MPEG_VIDEO_MULTI_SICE_MODE_MAX_BYTES, 0x0,
1522 V4L2_MPEG_VIDEO_MULTI_SLICE_MODE_SINGLE);
1523 v4l2_ctrl_new_std(&ctx->ctrls, &coda_ctrl_ops,
1524 V4L2_CID_MPEG_VIDEO_MULTI_SLICE_MAX_MB, 1, 0x3fffffff, 1, 1);
1525 v4l2_ctrl_new_std(&ctx->ctrls, &coda_ctrl_ops,
1526 V4L2_CID_MPEG_VIDEO_MULTI_SLICE_MAX_BYTES, 1, 0x3fffffff, 1,
1527 500);
1528 v4l2_ctrl_new_std_menu(&ctx->ctrls, &coda_ctrl_ops,
1529 V4L2_CID_MPEG_VIDEO_HEADER_MODE,
1530 V4L2_MPEG_VIDEO_HEADER_MODE_JOINED_WITH_1ST_FRAME,
1531 (1 << V4L2_MPEG_VIDEO_HEADER_MODE_SEPARATE),
1532 V4L2_MPEG_VIDEO_HEADER_MODE_JOINED_WITH_1ST_FRAME);
1533 v4l2_ctrl_new_std(&ctx->ctrls, &coda_ctrl_ops,
1534 V4L2_CID_MPEG_VIDEO_CYCLIC_INTRA_REFRESH_MB, 0,
1535 1920 * 1088 / 256, 1, 0);
1536 }
1537
coda_jpeg_encode_ctrls(struct coda_ctx * ctx)1538 static void coda_jpeg_encode_ctrls(struct coda_ctx *ctx)
1539 {
1540 v4l2_ctrl_new_std(&ctx->ctrls, &coda_ctrl_ops,
1541 V4L2_CID_JPEG_COMPRESSION_QUALITY, 5, 100, 1, 50);
1542 v4l2_ctrl_new_std(&ctx->ctrls, &coda_ctrl_ops,
1543 V4L2_CID_JPEG_RESTART_INTERVAL, 0, 100, 1, 0);
1544 }
1545
coda_ctrls_setup(struct coda_ctx * ctx)1546 static int coda_ctrls_setup(struct coda_ctx *ctx)
1547 {
1548 v4l2_ctrl_handler_init(&ctx->ctrls, 2);
1549
1550 v4l2_ctrl_new_std(&ctx->ctrls, &coda_ctrl_ops,
1551 V4L2_CID_HFLIP, 0, 1, 1, 0);
1552 v4l2_ctrl_new_std(&ctx->ctrls, &coda_ctrl_ops,
1553 V4L2_CID_VFLIP, 0, 1, 1, 0);
1554 if (ctx->inst_type == CODA_INST_ENCODER) {
1555 if (ctx->cvd->dst_formats[0] == V4L2_PIX_FMT_JPEG)
1556 coda_jpeg_encode_ctrls(ctx);
1557 else
1558 coda_encode_ctrls(ctx);
1559 }
1560
1561 if (ctx->ctrls.error) {
1562 v4l2_err(&ctx->dev->v4l2_dev,
1563 "control initialization error (%d)",
1564 ctx->ctrls.error);
1565 return -EINVAL;
1566 }
1567
1568 return v4l2_ctrl_handler_setup(&ctx->ctrls);
1569 }
1570
coda_queue_init(struct coda_ctx * ctx,struct vb2_queue * vq)1571 static int coda_queue_init(struct coda_ctx *ctx, struct vb2_queue *vq)
1572 {
1573 vq->drv_priv = ctx;
1574 vq->ops = &coda_qops;
1575 vq->buf_struct_size = sizeof(struct v4l2_m2m_buffer);
1576 vq->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_COPY;
1577 vq->lock = &ctx->dev->dev_mutex;
1578 /* One way to indicate end-of-stream for coda is to set the
1579 * bytesused == 0. However by default videobuf2 handles bytesused
1580 * equal to 0 as a special case and changes its value to the size
1581 * of the buffer. Set the allow_zero_bytesused flag, so
1582 * that videobuf2 will keep the value of bytesused intact.
1583 */
1584 vq->allow_zero_bytesused = 1;
1585
1586 return vb2_queue_init(vq);
1587 }
1588
coda_encoder_queue_init(void * priv,struct vb2_queue * src_vq,struct vb2_queue * dst_vq)1589 int coda_encoder_queue_init(void *priv, struct vb2_queue *src_vq,
1590 struct vb2_queue *dst_vq)
1591 {
1592 int ret;
1593
1594 src_vq->type = V4L2_BUF_TYPE_VIDEO_OUTPUT;
1595 src_vq->io_modes = VB2_DMABUF | VB2_MMAP;
1596 src_vq->mem_ops = &vb2_dma_contig_memops;
1597
1598 ret = coda_queue_init(priv, src_vq);
1599 if (ret)
1600 return ret;
1601
1602 dst_vq->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
1603 dst_vq->io_modes = VB2_DMABUF | VB2_MMAP;
1604 dst_vq->mem_ops = &vb2_dma_contig_memops;
1605
1606 return coda_queue_init(priv, dst_vq);
1607 }
1608
coda_decoder_queue_init(void * priv,struct vb2_queue * src_vq,struct vb2_queue * dst_vq)1609 int coda_decoder_queue_init(void *priv, struct vb2_queue *src_vq,
1610 struct vb2_queue *dst_vq)
1611 {
1612 int ret;
1613
1614 src_vq->type = V4L2_BUF_TYPE_VIDEO_OUTPUT;
1615 src_vq->io_modes = VB2_DMABUF | VB2_MMAP | VB2_USERPTR;
1616 src_vq->mem_ops = &vb2_vmalloc_memops;
1617
1618 ret = coda_queue_init(priv, src_vq);
1619 if (ret)
1620 return ret;
1621
1622 dst_vq->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
1623 dst_vq->io_modes = VB2_DMABUF | VB2_MMAP;
1624 dst_vq->mem_ops = &vb2_dma_contig_memops;
1625
1626 return coda_queue_init(priv, dst_vq);
1627 }
1628
coda_next_free_instance(struct coda_dev * dev)1629 static int coda_next_free_instance(struct coda_dev *dev)
1630 {
1631 int idx = ffz(dev->instance_mask);
1632
1633 if ((idx < 0) ||
1634 (dev->devtype->product == CODA_DX6 && idx > CODADX6_MAX_INSTANCES))
1635 return -EBUSY;
1636
1637 return idx;
1638 }
1639
1640 /*
1641 * File operations
1642 */
1643
coda_open(struct file * file)1644 static int coda_open(struct file *file)
1645 {
1646 struct video_device *vdev = video_devdata(file);
1647 struct coda_dev *dev = video_get_drvdata(vdev);
1648 struct coda_ctx *ctx = NULL;
1649 char *name;
1650 int ret;
1651 int idx;
1652
1653 ctx = kzalloc(sizeof(*ctx), GFP_KERNEL);
1654 if (!ctx)
1655 return -ENOMEM;
1656
1657 idx = coda_next_free_instance(dev);
1658 if (idx < 0) {
1659 ret = idx;
1660 goto err_coda_max;
1661 }
1662 set_bit(idx, &dev->instance_mask);
1663
1664 name = kasprintf(GFP_KERNEL, "context%d", idx);
1665 if (!name) {
1666 ret = -ENOMEM;
1667 goto err_coda_name_init;
1668 }
1669
1670 ctx->debugfs_entry = debugfs_create_dir(name, dev->debugfs_root);
1671 kfree(name);
1672
1673 ctx->cvd = to_coda_video_device(vdev);
1674 ctx->inst_type = ctx->cvd->type;
1675 ctx->ops = ctx->cvd->ops;
1676 ctx->use_bit = !ctx->cvd->direct;
1677 init_completion(&ctx->completion);
1678 INIT_WORK(&ctx->pic_run_work, coda_pic_run_work);
1679 if (ctx->ops->seq_end_work)
1680 INIT_WORK(&ctx->seq_end_work, ctx->ops->seq_end_work);
1681 v4l2_fh_init(&ctx->fh, video_devdata(file));
1682 file->private_data = &ctx->fh;
1683 v4l2_fh_add(&ctx->fh);
1684 ctx->dev = dev;
1685 ctx->idx = idx;
1686 switch (dev->devtype->product) {
1687 case CODA_960:
1688 ctx->frame_mem_ctrl = 1 << 12;
1689 /* fallthrough */
1690 case CODA_7541:
1691 ctx->reg_idx = 0;
1692 break;
1693 default:
1694 ctx->reg_idx = idx;
1695 }
1696
1697 /* Power up and upload firmware if necessary */
1698 ret = pm_runtime_get_sync(&dev->plat_dev->dev);
1699 if (ret < 0) {
1700 v4l2_err(&dev->v4l2_dev, "failed to power up: %d\n", ret);
1701 goto err_pm_get;
1702 }
1703
1704 ret = clk_prepare_enable(dev->clk_per);
1705 if (ret)
1706 goto err_clk_per;
1707
1708 ret = clk_prepare_enable(dev->clk_ahb);
1709 if (ret)
1710 goto err_clk_ahb;
1711
1712 set_default_params(ctx);
1713 ctx->fh.m2m_ctx = v4l2_m2m_ctx_init(dev->m2m_dev, ctx,
1714 ctx->ops->queue_init);
1715 if (IS_ERR(ctx->fh.m2m_ctx)) {
1716 ret = PTR_ERR(ctx->fh.m2m_ctx);
1717
1718 v4l2_err(&dev->v4l2_dev, "%s return error (%d)\n",
1719 __func__, ret);
1720 goto err_ctx_init;
1721 }
1722
1723 ret = coda_ctrls_setup(ctx);
1724 if (ret) {
1725 v4l2_err(&dev->v4l2_dev, "failed to setup coda controls\n");
1726 goto err_ctrls_setup;
1727 }
1728
1729 ctx->fh.ctrl_handler = &ctx->ctrls;
1730
1731 mutex_init(&ctx->bitstream_mutex);
1732 mutex_init(&ctx->buffer_mutex);
1733 INIT_LIST_HEAD(&ctx->buffer_meta_list);
1734
1735 coda_lock(ctx);
1736 list_add(&ctx->list, &dev->instances);
1737 coda_unlock(ctx);
1738
1739 v4l2_dbg(1, coda_debug, &dev->v4l2_dev, "Created instance %d (%p)\n",
1740 ctx->idx, ctx);
1741
1742 return 0;
1743
1744 err_ctrls_setup:
1745 v4l2_m2m_ctx_release(ctx->fh.m2m_ctx);
1746 err_ctx_init:
1747 clk_disable_unprepare(dev->clk_ahb);
1748 err_clk_ahb:
1749 clk_disable_unprepare(dev->clk_per);
1750 err_clk_per:
1751 pm_runtime_put_sync(&dev->plat_dev->dev);
1752 err_pm_get:
1753 v4l2_fh_del(&ctx->fh);
1754 v4l2_fh_exit(&ctx->fh);
1755 clear_bit(ctx->idx, &dev->instance_mask);
1756 err_coda_name_init:
1757 err_coda_max:
1758 kfree(ctx);
1759 return ret;
1760 }
1761
coda_release(struct file * file)1762 static int coda_release(struct file *file)
1763 {
1764 struct coda_dev *dev = video_drvdata(file);
1765 struct coda_ctx *ctx = fh_to_ctx(file->private_data);
1766
1767 v4l2_dbg(1, coda_debug, &dev->v4l2_dev, "Releasing instance %p\n",
1768 ctx);
1769
1770 if (ctx->inst_type == CODA_INST_DECODER && ctx->use_bit)
1771 coda_bit_stream_end_flag(ctx);
1772
1773 /* If this instance is running, call .job_abort and wait for it to end */
1774 v4l2_m2m_ctx_release(ctx->fh.m2m_ctx);
1775
1776 /* In case the instance was not running, we still need to call SEQ_END */
1777 if (ctx->initialized && ctx->ops->seq_end_work) {
1778 queue_work(dev->workqueue, &ctx->seq_end_work);
1779 flush_work(&ctx->seq_end_work);
1780 }
1781
1782 coda_lock(ctx);
1783 list_del(&ctx->list);
1784 coda_unlock(ctx);
1785
1786 if (ctx->dev->devtype->product == CODA_DX6)
1787 coda_free_aux_buf(dev, &ctx->workbuf);
1788
1789 v4l2_ctrl_handler_free(&ctx->ctrls);
1790 clk_disable_unprepare(dev->clk_ahb);
1791 clk_disable_unprepare(dev->clk_per);
1792 pm_runtime_put_sync(&dev->plat_dev->dev);
1793 v4l2_fh_del(&ctx->fh);
1794 v4l2_fh_exit(&ctx->fh);
1795 clear_bit(ctx->idx, &dev->instance_mask);
1796 if (ctx->ops->release)
1797 ctx->ops->release(ctx);
1798 debugfs_remove_recursive(ctx->debugfs_entry);
1799 kfree(ctx);
1800
1801 return 0;
1802 }
1803
1804 static const struct v4l2_file_operations coda_fops = {
1805 .owner = THIS_MODULE,
1806 .open = coda_open,
1807 .release = coda_release,
1808 .poll = v4l2_m2m_fop_poll,
1809 .unlocked_ioctl = video_ioctl2,
1810 .mmap = v4l2_m2m_fop_mmap,
1811 };
1812
coda_hw_init(struct coda_dev * dev)1813 static int coda_hw_init(struct coda_dev *dev)
1814 {
1815 u32 data;
1816 u16 *p;
1817 int i, ret;
1818
1819 ret = clk_prepare_enable(dev->clk_per);
1820 if (ret)
1821 goto err_clk_per;
1822
1823 ret = clk_prepare_enable(dev->clk_ahb);
1824 if (ret)
1825 goto err_clk_ahb;
1826
1827 if (dev->rstc)
1828 reset_control_reset(dev->rstc);
1829
1830 /*
1831 * Copy the first CODA_ISRAM_SIZE in the internal SRAM.
1832 * The 16-bit chars in the code buffer are in memory access
1833 * order, re-sort them to CODA order for register download.
1834 * Data in this SRAM survives a reboot.
1835 */
1836 p = (u16 *)dev->codebuf.vaddr;
1837 if (dev->devtype->product == CODA_DX6) {
1838 for (i = 0; i < (CODA_ISRAM_SIZE / 2); i++) {
1839 data = CODA_DOWN_ADDRESS_SET(i) |
1840 CODA_DOWN_DATA_SET(p[i ^ 1]);
1841 coda_write(dev, data, CODA_REG_BIT_CODE_DOWN);
1842 }
1843 } else {
1844 for (i = 0; i < (CODA_ISRAM_SIZE / 2); i++) {
1845 data = CODA_DOWN_ADDRESS_SET(i) |
1846 CODA_DOWN_DATA_SET(p[round_down(i, 4) +
1847 3 - (i % 4)]);
1848 coda_write(dev, data, CODA_REG_BIT_CODE_DOWN);
1849 }
1850 }
1851
1852 /* Clear registers */
1853 for (i = 0; i < 64; i++)
1854 coda_write(dev, 0, CODA_REG_BIT_CODE_BUF_ADDR + i * 4);
1855
1856 /* Tell the BIT where to find everything it needs */
1857 if (dev->devtype->product == CODA_960 ||
1858 dev->devtype->product == CODA_7541) {
1859 coda_write(dev, dev->tempbuf.paddr,
1860 CODA_REG_BIT_TEMP_BUF_ADDR);
1861 coda_write(dev, 0, CODA_REG_BIT_BIT_STREAM_PARAM);
1862 } else {
1863 coda_write(dev, dev->workbuf.paddr,
1864 CODA_REG_BIT_WORK_BUF_ADDR);
1865 }
1866 coda_write(dev, dev->codebuf.paddr,
1867 CODA_REG_BIT_CODE_BUF_ADDR);
1868 coda_write(dev, 0, CODA_REG_BIT_CODE_RUN);
1869
1870 /* Set default values */
1871 switch (dev->devtype->product) {
1872 case CODA_DX6:
1873 coda_write(dev, CODADX6_STREAM_BUF_PIC_FLUSH,
1874 CODA_REG_BIT_STREAM_CTRL);
1875 break;
1876 default:
1877 coda_write(dev, CODA7_STREAM_BUF_PIC_FLUSH,
1878 CODA_REG_BIT_STREAM_CTRL);
1879 }
1880 if (dev->devtype->product == CODA_960)
1881 coda_write(dev, 1 << 12, CODA_REG_BIT_FRAME_MEM_CTRL);
1882 else
1883 coda_write(dev, 0, CODA_REG_BIT_FRAME_MEM_CTRL);
1884
1885 if (dev->devtype->product != CODA_DX6)
1886 coda_write(dev, 0, CODA7_REG_BIT_AXI_SRAM_USE);
1887
1888 coda_write(dev, CODA_INT_INTERRUPT_ENABLE,
1889 CODA_REG_BIT_INT_ENABLE);
1890
1891 /* Reset VPU and start processor */
1892 data = coda_read(dev, CODA_REG_BIT_CODE_RESET);
1893 data |= CODA_REG_RESET_ENABLE;
1894 coda_write(dev, data, CODA_REG_BIT_CODE_RESET);
1895 udelay(10);
1896 data &= ~CODA_REG_RESET_ENABLE;
1897 coda_write(dev, data, CODA_REG_BIT_CODE_RESET);
1898 coda_write(dev, CODA_REG_RUN_ENABLE, CODA_REG_BIT_CODE_RUN);
1899
1900 clk_disable_unprepare(dev->clk_ahb);
1901 clk_disable_unprepare(dev->clk_per);
1902
1903 return 0;
1904
1905 err_clk_ahb:
1906 clk_disable_unprepare(dev->clk_per);
1907 err_clk_per:
1908 return ret;
1909 }
1910
coda_register_device(struct coda_dev * dev,int i)1911 static int coda_register_device(struct coda_dev *dev, int i)
1912 {
1913 struct video_device *vfd = &dev->vfd[i];
1914
1915 if (i >= dev->devtype->num_vdevs)
1916 return -EINVAL;
1917
1918 strlcpy(vfd->name, dev->devtype->vdevs[i]->name, sizeof(vfd->name));
1919 vfd->fops = &coda_fops;
1920 vfd->ioctl_ops = &coda_ioctl_ops;
1921 vfd->release = video_device_release_empty,
1922 vfd->lock = &dev->dev_mutex;
1923 vfd->v4l2_dev = &dev->v4l2_dev;
1924 vfd->vfl_dir = VFL_DIR_M2M;
1925 video_set_drvdata(vfd, dev);
1926
1927 /* Not applicable, use the selection API instead */
1928 v4l2_disable_ioctl(vfd, VIDIOC_CROPCAP);
1929 v4l2_disable_ioctl(vfd, VIDIOC_G_CROP);
1930 v4l2_disable_ioctl(vfd, VIDIOC_S_CROP);
1931
1932 return video_register_device(vfd, VFL_TYPE_GRABBER, 0);
1933 }
1934
coda_fw_callback(const struct firmware * fw,void * context)1935 static void coda_fw_callback(const struct firmware *fw, void *context)
1936 {
1937 struct coda_dev *dev = context;
1938 struct platform_device *pdev = dev->plat_dev;
1939 int i, ret;
1940
1941 if (!fw) {
1942 v4l2_err(&dev->v4l2_dev, "firmware request failed\n");
1943 goto put_pm;
1944 }
1945
1946 /* allocate auxiliary per-device code buffer for the BIT processor */
1947 ret = coda_alloc_aux_buf(dev, &dev->codebuf, fw->size, "codebuf",
1948 dev->debugfs_root);
1949 if (ret < 0)
1950 goto put_pm;
1951
1952 /* Copy the whole firmware image to the code buffer */
1953 memcpy(dev->codebuf.vaddr, fw->data, fw->size);
1954 release_firmware(fw);
1955
1956 ret = coda_hw_init(dev);
1957 if (ret < 0) {
1958 v4l2_err(&dev->v4l2_dev, "HW initialization failed\n");
1959 goto put_pm;
1960 }
1961
1962 ret = coda_check_firmware(dev);
1963 if (ret < 0)
1964 goto put_pm;
1965
1966 dev->alloc_ctx = vb2_dma_contig_init_ctx(&pdev->dev);
1967 if (IS_ERR(dev->alloc_ctx)) {
1968 v4l2_err(&dev->v4l2_dev, "Failed to alloc vb2 context\n");
1969 goto put_pm;
1970 }
1971
1972 dev->m2m_dev = v4l2_m2m_init(&coda_m2m_ops);
1973 if (IS_ERR(dev->m2m_dev)) {
1974 v4l2_err(&dev->v4l2_dev, "Failed to init mem2mem device\n");
1975 goto rel_ctx;
1976 }
1977
1978 for (i = 0; i < dev->devtype->num_vdevs; i++) {
1979 ret = coda_register_device(dev, i);
1980 if (ret) {
1981 v4l2_err(&dev->v4l2_dev,
1982 "Failed to register %s video device: %d\n",
1983 dev->devtype->vdevs[i]->name, ret);
1984 goto rel_vfd;
1985 }
1986 }
1987
1988 v4l2_info(&dev->v4l2_dev, "codec registered as /dev/video[%d-%d]\n",
1989 dev->vfd[0].num, dev->vfd[i - 1].num);
1990
1991 pm_runtime_put_sync(&pdev->dev);
1992 return;
1993
1994 rel_vfd:
1995 while (--i >= 0)
1996 video_unregister_device(&dev->vfd[i]);
1997 v4l2_m2m_release(dev->m2m_dev);
1998 rel_ctx:
1999 vb2_dma_contig_cleanup_ctx(dev->alloc_ctx);
2000 put_pm:
2001 pm_runtime_put_sync(&pdev->dev);
2002 }
2003
coda_firmware_request(struct coda_dev * dev)2004 static int coda_firmware_request(struct coda_dev *dev)
2005 {
2006 char *fw = dev->devtype->firmware;
2007
2008 dev_dbg(&dev->plat_dev->dev, "requesting firmware '%s' for %s\n", fw,
2009 coda_product_name(dev->devtype->product));
2010
2011 return request_firmware_nowait(THIS_MODULE, true,
2012 fw, &dev->plat_dev->dev, GFP_KERNEL, dev, coda_fw_callback);
2013 }
2014
2015 enum coda_platform {
2016 CODA_IMX27,
2017 CODA_IMX53,
2018 CODA_IMX6Q,
2019 CODA_IMX6DL,
2020 };
2021
2022 static const struct coda_devtype coda_devdata[] = {
2023 [CODA_IMX27] = {
2024 .firmware = "v4l-codadx6-imx27.bin",
2025 .product = CODA_DX6,
2026 .codecs = codadx6_codecs,
2027 .num_codecs = ARRAY_SIZE(codadx6_codecs),
2028 .vdevs = codadx6_video_devices,
2029 .num_vdevs = ARRAY_SIZE(codadx6_video_devices),
2030 .workbuf_size = 288 * 1024 + FMO_SLICE_SAVE_BUF_SIZE * 8 * 1024,
2031 .iram_size = 0xb000,
2032 },
2033 [CODA_IMX53] = {
2034 .firmware = "v4l-coda7541-imx53.bin",
2035 .product = CODA_7541,
2036 .codecs = coda7_codecs,
2037 .num_codecs = ARRAY_SIZE(coda7_codecs),
2038 .vdevs = coda7_video_devices,
2039 .num_vdevs = ARRAY_SIZE(coda7_video_devices),
2040 .workbuf_size = 128 * 1024,
2041 .tempbuf_size = 304 * 1024,
2042 .iram_size = 0x14000,
2043 },
2044 [CODA_IMX6Q] = {
2045 .firmware = "v4l-coda960-imx6q.bin",
2046 .product = CODA_960,
2047 .codecs = coda9_codecs,
2048 .num_codecs = ARRAY_SIZE(coda9_codecs),
2049 .vdevs = coda9_video_devices,
2050 .num_vdevs = ARRAY_SIZE(coda9_video_devices),
2051 .workbuf_size = 80 * 1024,
2052 .tempbuf_size = 204 * 1024,
2053 .iram_size = 0x21000,
2054 },
2055 [CODA_IMX6DL] = {
2056 .firmware = "v4l-coda960-imx6dl.bin",
2057 .product = CODA_960,
2058 .codecs = coda9_codecs,
2059 .num_codecs = ARRAY_SIZE(coda9_codecs),
2060 .vdevs = coda9_video_devices,
2061 .num_vdevs = ARRAY_SIZE(coda9_video_devices),
2062 .workbuf_size = 80 * 1024,
2063 .tempbuf_size = 204 * 1024,
2064 .iram_size = 0x20000,
2065 },
2066 };
2067
2068 static struct platform_device_id coda_platform_ids[] = {
2069 { .name = "coda-imx27", .driver_data = CODA_IMX27 },
2070 { /* sentinel */ }
2071 };
2072 MODULE_DEVICE_TABLE(platform, coda_platform_ids);
2073
2074 #ifdef CONFIG_OF
2075 static const struct of_device_id coda_dt_ids[] = {
2076 { .compatible = "fsl,imx27-vpu", .data = &coda_devdata[CODA_IMX27] },
2077 { .compatible = "fsl,imx53-vpu", .data = &coda_devdata[CODA_IMX53] },
2078 { .compatible = "fsl,imx6q-vpu", .data = &coda_devdata[CODA_IMX6Q] },
2079 { .compatible = "fsl,imx6dl-vpu", .data = &coda_devdata[CODA_IMX6DL] },
2080 { /* sentinel */ }
2081 };
2082 MODULE_DEVICE_TABLE(of, coda_dt_ids);
2083 #endif
2084
coda_probe(struct platform_device * pdev)2085 static int coda_probe(struct platform_device *pdev)
2086 {
2087 const struct of_device_id *of_id =
2088 of_match_device(of_match_ptr(coda_dt_ids), &pdev->dev);
2089 const struct platform_device_id *pdev_id;
2090 struct coda_platform_data *pdata = pdev->dev.platform_data;
2091 struct device_node *np = pdev->dev.of_node;
2092 struct gen_pool *pool;
2093 struct coda_dev *dev;
2094 struct resource *res;
2095 int ret, irq;
2096
2097 dev = devm_kzalloc(&pdev->dev, sizeof(*dev), GFP_KERNEL);
2098 if (!dev)
2099 return -ENOMEM;
2100
2101 pdev_id = of_id ? of_id->data : platform_get_device_id(pdev);
2102
2103 if (of_id) {
2104 dev->devtype = of_id->data;
2105 } else if (pdev_id) {
2106 dev->devtype = &coda_devdata[pdev_id->driver_data];
2107 } else {
2108 ret = -EINVAL;
2109 goto err_v4l2_register;
2110 }
2111
2112 spin_lock_init(&dev->irqlock);
2113 INIT_LIST_HEAD(&dev->instances);
2114
2115 dev->plat_dev = pdev;
2116 dev->clk_per = devm_clk_get(&pdev->dev, "per");
2117 if (IS_ERR(dev->clk_per)) {
2118 dev_err(&pdev->dev, "Could not get per clock\n");
2119 return PTR_ERR(dev->clk_per);
2120 }
2121
2122 dev->clk_ahb = devm_clk_get(&pdev->dev, "ahb");
2123 if (IS_ERR(dev->clk_ahb)) {
2124 dev_err(&pdev->dev, "Could not get ahb clock\n");
2125 return PTR_ERR(dev->clk_ahb);
2126 }
2127
2128 /* Get memory for physical registers */
2129 res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
2130 dev->regs_base = devm_ioremap_resource(&pdev->dev, res);
2131 if (IS_ERR(dev->regs_base))
2132 return PTR_ERR(dev->regs_base);
2133
2134 /* IRQ */
2135 irq = platform_get_irq_byname(pdev, "bit");
2136 if (irq < 0)
2137 irq = platform_get_irq(pdev, 0);
2138 if (irq < 0) {
2139 dev_err(&pdev->dev, "failed to get irq resource\n");
2140 return irq;
2141 }
2142
2143 ret = devm_request_threaded_irq(&pdev->dev, irq, NULL, coda_irq_handler,
2144 IRQF_ONESHOT, dev_name(&pdev->dev), dev);
2145 if (ret < 0) {
2146 dev_err(&pdev->dev, "failed to request irq: %d\n", ret);
2147 return ret;
2148 }
2149
2150 dev->rstc = devm_reset_control_get_optional(&pdev->dev, NULL);
2151 if (IS_ERR(dev->rstc)) {
2152 ret = PTR_ERR(dev->rstc);
2153 if (ret == -ENOENT || ret == -ENOSYS) {
2154 dev->rstc = NULL;
2155 } else {
2156 dev_err(&pdev->dev, "failed get reset control: %d\n",
2157 ret);
2158 return ret;
2159 }
2160 }
2161
2162 /* Get IRAM pool from device tree or platform data */
2163 pool = of_get_named_gen_pool(np, "iram", 0);
2164 if (!pool && pdata)
2165 pool = dev_get_gen_pool(pdata->iram_dev);
2166 if (!pool) {
2167 dev_err(&pdev->dev, "iram pool not available\n");
2168 return -ENOMEM;
2169 }
2170 dev->iram_pool = pool;
2171
2172 ret = v4l2_device_register(&pdev->dev, &dev->v4l2_dev);
2173 if (ret)
2174 return ret;
2175
2176 mutex_init(&dev->dev_mutex);
2177 mutex_init(&dev->coda_mutex);
2178
2179 dev->debugfs_root = debugfs_create_dir("coda", NULL);
2180 if (!dev->debugfs_root)
2181 dev_warn(&pdev->dev, "failed to create debugfs root\n");
2182
2183 /* allocate auxiliary per-device buffers for the BIT processor */
2184 if (dev->devtype->product == CODA_DX6) {
2185 ret = coda_alloc_aux_buf(dev, &dev->workbuf,
2186 dev->devtype->workbuf_size, "workbuf",
2187 dev->debugfs_root);
2188 if (ret < 0)
2189 goto err_v4l2_register;
2190 }
2191
2192 if (dev->devtype->tempbuf_size) {
2193 ret = coda_alloc_aux_buf(dev, &dev->tempbuf,
2194 dev->devtype->tempbuf_size, "tempbuf",
2195 dev->debugfs_root);
2196 if (ret < 0)
2197 goto err_v4l2_register;
2198 }
2199
2200 dev->iram.size = dev->devtype->iram_size;
2201 dev->iram.vaddr = gen_pool_dma_alloc(dev->iram_pool, dev->iram.size,
2202 &dev->iram.paddr);
2203 if (!dev->iram.vaddr) {
2204 dev_warn(&pdev->dev, "unable to alloc iram\n");
2205 } else {
2206 memset(dev->iram.vaddr, 0, dev->iram.size);
2207 dev->iram.blob.data = dev->iram.vaddr;
2208 dev->iram.blob.size = dev->iram.size;
2209 dev->iram.dentry = debugfs_create_blob("iram", 0644,
2210 dev->debugfs_root,
2211 &dev->iram.blob);
2212 }
2213
2214 dev->workqueue = alloc_workqueue("coda", WQ_UNBOUND | WQ_MEM_RECLAIM, 1);
2215 if (!dev->workqueue) {
2216 dev_err(&pdev->dev, "unable to alloc workqueue\n");
2217 ret = -ENOMEM;
2218 goto err_v4l2_register;
2219 }
2220
2221 platform_set_drvdata(pdev, dev);
2222
2223 /*
2224 * Start activated so we can directly call coda_hw_init in
2225 * coda_fw_callback regardless of whether CONFIG_PM is
2226 * enabled or whether the device is associated with a PM domain.
2227 */
2228 pm_runtime_get_noresume(&pdev->dev);
2229 pm_runtime_set_active(&pdev->dev);
2230 pm_runtime_enable(&pdev->dev);
2231
2232 return coda_firmware_request(dev);
2233
2234 err_v4l2_register:
2235 v4l2_device_unregister(&dev->v4l2_dev);
2236 return ret;
2237 }
2238
coda_remove(struct platform_device * pdev)2239 static int coda_remove(struct platform_device *pdev)
2240 {
2241 struct coda_dev *dev = platform_get_drvdata(pdev);
2242 int i;
2243
2244 for (i = 0; i < ARRAY_SIZE(dev->vfd); i++) {
2245 if (video_get_drvdata(&dev->vfd[i]))
2246 video_unregister_device(&dev->vfd[i]);
2247 }
2248 if (dev->m2m_dev)
2249 v4l2_m2m_release(dev->m2m_dev);
2250 pm_runtime_disable(&pdev->dev);
2251 if (dev->alloc_ctx)
2252 vb2_dma_contig_cleanup_ctx(dev->alloc_ctx);
2253 v4l2_device_unregister(&dev->v4l2_dev);
2254 destroy_workqueue(dev->workqueue);
2255 if (dev->iram.vaddr)
2256 gen_pool_free(dev->iram_pool, (unsigned long)dev->iram.vaddr,
2257 dev->iram.size);
2258 coda_free_aux_buf(dev, &dev->codebuf);
2259 coda_free_aux_buf(dev, &dev->tempbuf);
2260 coda_free_aux_buf(dev, &dev->workbuf);
2261 debugfs_remove_recursive(dev->debugfs_root);
2262 return 0;
2263 }
2264
2265 #ifdef CONFIG_PM
coda_runtime_resume(struct device * dev)2266 static int coda_runtime_resume(struct device *dev)
2267 {
2268 struct coda_dev *cdev = dev_get_drvdata(dev);
2269 int ret = 0;
2270
2271 if (dev->pm_domain && cdev->codebuf.vaddr) {
2272 ret = coda_hw_init(cdev);
2273 if (ret)
2274 v4l2_err(&cdev->v4l2_dev, "HW initialization failed\n");
2275 }
2276
2277 return ret;
2278 }
2279 #endif
2280
2281 static const struct dev_pm_ops coda_pm_ops = {
2282 SET_RUNTIME_PM_OPS(NULL, coda_runtime_resume, NULL)
2283 };
2284
2285 static struct platform_driver coda_driver = {
2286 .probe = coda_probe,
2287 .remove = coda_remove,
2288 .driver = {
2289 .name = CODA_NAME,
2290 .of_match_table = of_match_ptr(coda_dt_ids),
2291 .pm = &coda_pm_ops,
2292 },
2293 .id_table = coda_platform_ids,
2294 };
2295
2296 module_platform_driver(coda_driver);
2297
2298 MODULE_LICENSE("GPL");
2299 MODULE_AUTHOR("Javier Martin <javier.martin@vista-silicon.com>");
2300 MODULE_DESCRIPTION("Coda multi-standard codec V4L2 driver");
2301