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sh_eth: fix EESIPR values for SH77{34|63}
[linux/fpc-iii.git] / drivers / media / platform / coda / coda-common.c
blob9e6bdafa16f583fc657940824cf9d1236bd9a249
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/media/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_MP2, V4L2_PIX_FMT_MPEG2, V4L2_PIX_FMT_YUV420, 1920, 1088),
135 CODA_CODEC(CODA7_MODE_DECODE_MP4, V4L2_PIX_FMT_MPEG4, V4L2_PIX_FMT_YUV420, 1920, 1088),
136 CODA_CODEC(CODA7_MODE_DECODE_MJPG, V4L2_PIX_FMT_JPEG, V4L2_PIX_FMT_YUV420, 8192, 8192),
137 };
138
139 static const struct coda_codec coda9_codecs[] = {
140 CODA_CODEC(CODA9_MODE_ENCODE_H264, V4L2_PIX_FMT_YUV420, V4L2_PIX_FMT_H264, 1920, 1088),
141 CODA_CODEC(CODA9_MODE_ENCODE_MP4, V4L2_PIX_FMT_YUV420, V4L2_PIX_FMT_MPEG4, 1920, 1088),
142 CODA_CODEC(CODA9_MODE_DECODE_H264, V4L2_PIX_FMT_H264, V4L2_PIX_FMT_YUV420, 1920, 1088),
143 CODA_CODEC(CODA9_MODE_DECODE_MP2, V4L2_PIX_FMT_MPEG2, V4L2_PIX_FMT_YUV420, 1920, 1088),
144 CODA_CODEC(CODA9_MODE_DECODE_MP4, V4L2_PIX_FMT_MPEG4, V4L2_PIX_FMT_YUV420, 1920, 1088),
145 };
146
147 struct coda_video_device {
148 const char *name;
149 enum coda_inst_type type;
150 const struct coda_context_ops *ops;
151 bool direct;
152 u32 src_formats[CODA_MAX_FORMATS];
153 u32 dst_formats[CODA_MAX_FORMATS];
154 };
155
156 static const struct coda_video_device coda_bit_encoder = {
157 .name = "coda-encoder",
158 .type = CODA_INST_ENCODER,
159 .ops = &coda_bit_encode_ops,
160 .src_formats = {
161 V4L2_PIX_FMT_NV12,
162 V4L2_PIX_FMT_YUV420,
163 V4L2_PIX_FMT_YVU420,
164 },
165 .dst_formats = {
166 V4L2_PIX_FMT_H264,
167 V4L2_PIX_FMT_MPEG4,
168 },
169 };
170
171 static const struct coda_video_device coda_bit_jpeg_encoder = {
172 .name = "coda-jpeg-encoder",
173 .type = CODA_INST_ENCODER,
174 .ops = &coda_bit_encode_ops,
175 .src_formats = {
176 V4L2_PIX_FMT_NV12,
177 V4L2_PIX_FMT_YUV420,
178 V4L2_PIX_FMT_YVU420,
179 V4L2_PIX_FMT_YUV422P,
180 },
181 .dst_formats = {
182 V4L2_PIX_FMT_JPEG,
183 },
184 };
185
186 static const struct coda_video_device coda_bit_decoder = {
187 .name = "coda-decoder",
188 .type = CODA_INST_DECODER,
189 .ops = &coda_bit_decode_ops,
190 .src_formats = {
191 V4L2_PIX_FMT_H264,
192 V4L2_PIX_FMT_MPEG2,
193 V4L2_PIX_FMT_MPEG4,
194 },
195 .dst_formats = {
196 V4L2_PIX_FMT_NV12,
197 V4L2_PIX_FMT_YUV420,
198 V4L2_PIX_FMT_YVU420,
199 },
200 };
201
202 static const struct coda_video_device coda_bit_jpeg_decoder = {
203 .name = "coda-jpeg-decoder",
204 .type = CODA_INST_DECODER,
205 .ops = &coda_bit_decode_ops,
206 .src_formats = {
207 V4L2_PIX_FMT_JPEG,
208 },
209 .dst_formats = {
210 V4L2_PIX_FMT_NV12,
211 V4L2_PIX_FMT_YUV420,
212 V4L2_PIX_FMT_YVU420,
213 V4L2_PIX_FMT_YUV422P,
214 },
215 };
216
217 static const struct coda_video_device *codadx6_video_devices[] = {
218 &coda_bit_encoder,
219 };
220
221 static const struct coda_video_device *coda7_video_devices[] = {
222 &coda_bit_jpeg_encoder,
223 &coda_bit_jpeg_decoder,
224 &coda_bit_encoder,
225 &coda_bit_decoder,
226 };
227
228 static const struct coda_video_device *coda9_video_devices[] = {
229 &coda_bit_encoder,
230 &coda_bit_decoder,
231 };
232
233 /*
234 * Normalize all supported YUV 4:2:0 formats to the value used in the codec
235 * tables.
236 */
237 static u32 coda_format_normalize_yuv(u32 fourcc)
238 {
239 switch (fourcc) {
240 case V4L2_PIX_FMT_NV12:
241 case V4L2_PIX_FMT_YUV420:
242 case V4L2_PIX_FMT_YVU420:
243 case V4L2_PIX_FMT_YUV422P:
244 return V4L2_PIX_FMT_YUV420;
245 default:
246 return fourcc;
247 }
248 }
249
250 static const struct coda_codec *coda_find_codec(struct coda_dev *dev,
251 int src_fourcc, int dst_fourcc)
252 {
253 const struct coda_codec *codecs = dev->devtype->codecs;
254 int num_codecs = dev->devtype->num_codecs;
255 int k;
256
257 src_fourcc = coda_format_normalize_yuv(src_fourcc);
258 dst_fourcc = coda_format_normalize_yuv(dst_fourcc);
259 if (src_fourcc == dst_fourcc)
260 return NULL;
261
262 for (k = 0; k < num_codecs; k++) {
263 if (codecs[k].src_fourcc == src_fourcc &&
264 codecs[k].dst_fourcc == dst_fourcc)
265 break;
266 }
267
268 if (k == num_codecs)
269 return NULL;
270
271 return &codecs[k];
272 }
273
274 static void coda_get_max_dimensions(struct coda_dev *dev,
275 const struct coda_codec *codec,
276 int *max_w, int *max_h)
277 {
278 const struct coda_codec *codecs = dev->devtype->codecs;
279 int num_codecs = dev->devtype->num_codecs;
280 unsigned int w, h;
281 int k;
282
283 if (codec) {
284 w = codec->max_w;
285 h = codec->max_h;
286 } else {
287 for (k = 0, w = 0, h = 0; k < num_codecs; k++) {
288 w = max(w, codecs[k].max_w);
289 h = max(h, codecs[k].max_h);
290 }
291 }
292
293 if (max_w)
294 *max_w = w;
295 if (max_h)
296 *max_h = h;
297 }
298
299 static const struct coda_video_device *to_coda_video_device(struct video_device
300 *vdev)
301 {
302 struct coda_dev *dev = video_get_drvdata(vdev);
303 unsigned int i = vdev - dev->vfd;
304
305 if (i >= dev->devtype->num_vdevs)
306 return NULL;
307
308 return dev->devtype->vdevs[i];
309 }
310
311 const char *coda_product_name(int product)
312 {
313 static char buf[9];
314
315 switch (product) {
316 case CODA_DX6:
317 return "CodaDx6";
318 case CODA_7541:
319 return "CODA7541";
320 case CODA_960:
321 return "CODA960";
322 default:
323 snprintf(buf, sizeof(buf), "(0x%04x)", product);
324 return buf;
325 }
326 }
327
328 /*
329 * V4L2 ioctl() operations.
330 */
331 static int coda_querycap(struct file *file, void *priv,
332 struct v4l2_capability *cap)
333 {
334 struct coda_ctx *ctx = fh_to_ctx(priv);
335
336 strlcpy(cap->driver, CODA_NAME, sizeof(cap->driver));
337 strlcpy(cap->card, coda_product_name(ctx->dev->devtype->product),
338 sizeof(cap->card));
339 strlcpy(cap->bus_info, "platform:" CODA_NAME, sizeof(cap->bus_info));
340 cap->device_caps = V4L2_CAP_VIDEO_M2M | V4L2_CAP_STREAMING;
341 cap->capabilities = cap->device_caps | V4L2_CAP_DEVICE_CAPS;
342
343 return 0;
344 }
345
346 static int coda_enum_fmt(struct file *file, void *priv,
347 struct v4l2_fmtdesc *f)
348 {
349 struct video_device *vdev = video_devdata(file);
350 const struct coda_video_device *cvd = to_coda_video_device(vdev);
351 const u32 *formats;
352
353 if (f->type == V4L2_BUF_TYPE_VIDEO_OUTPUT)
354 formats = cvd->src_formats;
355 else if (f->type == V4L2_BUF_TYPE_VIDEO_CAPTURE)
356 formats = cvd->dst_formats;
357 else
358 return -EINVAL;
359
360 if (f->index >= CODA_MAX_FORMATS || formats[f->index] == 0)
361 return -EINVAL;
362
363 f->pixelformat = formats[f->index];
364
365 return 0;
366 }
367
368 static int coda_g_fmt(struct file *file, void *priv,
369 struct v4l2_format *f)
370 {
371 struct coda_q_data *q_data;
372 struct coda_ctx *ctx = fh_to_ctx(priv);
373
374 q_data = get_q_data(ctx, f->type);
375 if (!q_data)
376 return -EINVAL;
377
378 f->fmt.pix.field = V4L2_FIELD_NONE;
379 f->fmt.pix.pixelformat = q_data->fourcc;
380 f->fmt.pix.width = q_data->width;
381 f->fmt.pix.height = q_data->height;
382 f->fmt.pix.bytesperline = q_data->bytesperline;
383
384 f->fmt.pix.sizeimage = q_data->sizeimage;
385 if (f->fmt.pix.pixelformat == V4L2_PIX_FMT_JPEG)
386 f->fmt.pix.colorspace = V4L2_COLORSPACE_JPEG;
387 else
388 f->fmt.pix.colorspace = ctx->colorspace;
389
390 return 0;
391 }
392
393 static int coda_try_pixelformat(struct coda_ctx *ctx, struct v4l2_format *f)
394 {
395 struct coda_q_data *q_data;
396 const u32 *formats;
397 int i;
398
399 if (f->type == V4L2_BUF_TYPE_VIDEO_OUTPUT)
400 formats = ctx->cvd->src_formats;
401 else if (f->type == V4L2_BUF_TYPE_VIDEO_CAPTURE)
402 formats = ctx->cvd->dst_formats;
403 else
404 return -EINVAL;
405
406 for (i = 0; i < CODA_MAX_FORMATS; i++) {
407 if (formats[i] == f->fmt.pix.pixelformat) {
408 f->fmt.pix.pixelformat = formats[i];
409 return 0;
410 }
411 }
412
413 /* Fall back to currently set pixelformat */
414 q_data = get_q_data(ctx, f->type);
415 f->fmt.pix.pixelformat = q_data->fourcc;
416
417 return 0;
418 }
419
420 static unsigned int coda_estimate_sizeimage(struct coda_ctx *ctx, u32 sizeimage,
421 u32 width, u32 height)
422 {
423 /*
424 * This is a rough estimate for sensible compressed buffer
425 * sizes (between 1 and 16 bits per pixel). This could be
426 * improved by better format specific worst case estimates.
427 */
428 return round_up(clamp(sizeimage, width * height / 8,
429 width * height * 2), PAGE_SIZE);
430 }
431
432 static int coda_try_fmt(struct coda_ctx *ctx, const struct coda_codec *codec,
433 struct v4l2_format *f)
434 {
435 struct coda_dev *dev = ctx->dev;
436 unsigned int max_w, max_h;
437 enum v4l2_field field;
438
439 field = f->fmt.pix.field;
440 if (field == V4L2_FIELD_ANY)
441 field = V4L2_FIELD_NONE;
442 else if (V4L2_FIELD_NONE != field)
443 return -EINVAL;
444
445 /* V4L2 specification suggests the driver corrects the format struct
446 * if any of the dimensions is unsupported */
447 f->fmt.pix.field = field;
448
449 coda_get_max_dimensions(dev, codec, &max_w, &max_h);
450 v4l_bound_align_image(&f->fmt.pix.width, MIN_W, max_w, W_ALIGN,
451 &f->fmt.pix.height, MIN_H, max_h, H_ALIGN,
452 S_ALIGN);
453
454 switch (f->fmt.pix.pixelformat) {
455 case V4L2_PIX_FMT_NV12:
456 case V4L2_PIX_FMT_YUV420:
457 case V4L2_PIX_FMT_YVU420:
458 /*
459 * Frame stride must be at least multiple of 8,
460 * but multiple of 16 for h.264 or JPEG 4:2:x
461 */
462 f->fmt.pix.bytesperline = round_up(f->fmt.pix.width, 16);
463 f->fmt.pix.sizeimage = f->fmt.pix.bytesperline *
464 f->fmt.pix.height * 3 / 2;
465 break;
466 case V4L2_PIX_FMT_YUV422P:
467 f->fmt.pix.bytesperline = round_up(f->fmt.pix.width, 16);
468 f->fmt.pix.sizeimage = f->fmt.pix.bytesperline *
469 f->fmt.pix.height * 2;
470 break;
471 case V4L2_PIX_FMT_JPEG:
472 f->fmt.pix.colorspace = V4L2_COLORSPACE_JPEG;
473 /* fallthrough */
474 case V4L2_PIX_FMT_H264:
475 case V4L2_PIX_FMT_MPEG4:
476 case V4L2_PIX_FMT_MPEG2:
477 f->fmt.pix.bytesperline = 0;
478 f->fmt.pix.sizeimage = coda_estimate_sizeimage(ctx,
479 f->fmt.pix.sizeimage,
480 f->fmt.pix.width,
481 f->fmt.pix.height);
482 break;
483 default:
484 BUG();
485 }
486
487 return 0;
488 }
489
490 static int coda_try_fmt_vid_cap(struct file *file, void *priv,
491 struct v4l2_format *f)
492 {
493 struct coda_ctx *ctx = fh_to_ctx(priv);
494 const struct coda_q_data *q_data_src;
495 const struct coda_codec *codec;
496 struct vb2_queue *src_vq;
497 int ret;
498
499 ret = coda_try_pixelformat(ctx, f);
500 if (ret < 0)
501 return ret;
502
503 q_data_src = get_q_data(ctx, V4L2_BUF_TYPE_VIDEO_OUTPUT);
504
505 /*
506 * If the source format is already fixed, only allow the same output
507 * resolution
508 */
509 src_vq = v4l2_m2m_get_vq(ctx->fh.m2m_ctx, V4L2_BUF_TYPE_VIDEO_OUTPUT);
510 if (vb2_is_streaming(src_vq)) {
511 f->fmt.pix.width = q_data_src->width;
512 f->fmt.pix.height = q_data_src->height;
513 }
514
515 f->fmt.pix.colorspace = ctx->colorspace;
516
517 q_data_src = get_q_data(ctx, V4L2_BUF_TYPE_VIDEO_OUTPUT);
518 codec = coda_find_codec(ctx->dev, q_data_src->fourcc,
519 f->fmt.pix.pixelformat);
520 if (!codec)
521 return -EINVAL;
522
523 ret = coda_try_fmt(ctx, codec, f);
524 if (ret < 0)
525 return ret;
526
527 /* The h.264 decoder only returns complete 16x16 macroblocks */
528 if (codec && codec->src_fourcc == V4L2_PIX_FMT_H264) {
529 f->fmt.pix.width = f->fmt.pix.width;
530 f->fmt.pix.height = round_up(f->fmt.pix.height, 16);
531 f->fmt.pix.bytesperline = round_up(f->fmt.pix.width, 16);
532 f->fmt.pix.sizeimage = f->fmt.pix.bytesperline *
533 f->fmt.pix.height * 3 / 2;
534 }
535
536 return 0;
537 }
538
539 static int coda_try_fmt_vid_out(struct file *file, void *priv,
540 struct v4l2_format *f)
541 {
542 struct coda_ctx *ctx = fh_to_ctx(priv);
543 struct coda_dev *dev = ctx->dev;
544 const struct coda_q_data *q_data_dst;
545 const struct coda_codec *codec;
546 int ret;
547
548 ret = coda_try_pixelformat(ctx, f);
549 if (ret < 0)
550 return ret;
551
552 switch (f->fmt.pix.colorspace) {
553 case V4L2_COLORSPACE_REC709:
554 case V4L2_COLORSPACE_JPEG:
555 break;
556 default:
557 if (f->fmt.pix.pixelformat == V4L2_PIX_FMT_JPEG)
558 f->fmt.pix.colorspace = V4L2_COLORSPACE_JPEG;
559 else
560 f->fmt.pix.colorspace = V4L2_COLORSPACE_REC709;
561 }
562
563 q_data_dst = get_q_data(ctx, V4L2_BUF_TYPE_VIDEO_CAPTURE);
564 codec = coda_find_codec(dev, f->fmt.pix.pixelformat, q_data_dst->fourcc);
565
566 return coda_try_fmt(ctx, codec, f);
567 }
568
569 static int coda_s_fmt(struct coda_ctx *ctx, struct v4l2_format *f)
570 {
571 struct coda_q_data *q_data;
572 struct vb2_queue *vq;
573
574 vq = v4l2_m2m_get_vq(ctx->fh.m2m_ctx, f->type);
575 if (!vq)
576 return -EINVAL;
577
578 q_data = get_q_data(ctx, f->type);
579 if (!q_data)
580 return -EINVAL;
581
582 if (vb2_is_busy(vq)) {
583 v4l2_err(&ctx->dev->v4l2_dev, "%s queue busy\n", __func__);
584 return -EBUSY;
585 }
586
587 q_data->fourcc = f->fmt.pix.pixelformat;
588 q_data->width = f->fmt.pix.width;
589 q_data->height = f->fmt.pix.height;
590 q_data->bytesperline = f->fmt.pix.bytesperline;
591 q_data->sizeimage = f->fmt.pix.sizeimage;
592 q_data->rect.left = 0;
593 q_data->rect.top = 0;
594 q_data->rect.width = f->fmt.pix.width;
595 q_data->rect.height = f->fmt.pix.height;
596
597 switch (f->fmt.pix.pixelformat) {
598 case V4L2_PIX_FMT_NV12:
599 if (f->type == V4L2_BUF_TYPE_VIDEO_OUTPUT) {
600 ctx->tiled_map_type = GDI_TILED_FRAME_MB_RASTER_MAP;
601 if (!disable_tiling)
602 break;
603 }
604 /* else fall through */
605 case V4L2_PIX_FMT_YUV420:
606 case V4L2_PIX_FMT_YVU420:
607 ctx->tiled_map_type = GDI_LINEAR_FRAME_MAP;
608 break;
609 default:
610 break;
611 }
612
613 v4l2_dbg(1, coda_debug, &ctx->dev->v4l2_dev,
614 "Setting format for type %d, wxh: %dx%d, fmt: %d\n",
615 f->type, q_data->width, q_data->height, q_data->fourcc);
616
617 return 0;
618 }
619
620 static int coda_s_fmt_vid_cap(struct file *file, void *priv,
621 struct v4l2_format *f)
622 {
623 struct coda_ctx *ctx = fh_to_ctx(priv);
624 int ret;
625
626 ret = coda_try_fmt_vid_cap(file, priv, f);
627 if (ret)
628 return ret;
629
630 return coda_s_fmt(ctx, f);
631 }
632
633 static int coda_s_fmt_vid_out(struct file *file, void *priv,
634 struct v4l2_format *f)
635 {
636 struct coda_ctx *ctx = fh_to_ctx(priv);
637 struct v4l2_format f_cap;
638 int ret;
639
640 ret = coda_try_fmt_vid_out(file, priv, f);
641 if (ret)
642 return ret;
643
644 ret = coda_s_fmt(ctx, f);
645 if (ret)
646 return ret;
647
648 ctx->colorspace = f->fmt.pix.colorspace;
649
650 memset(&f_cap, 0, sizeof(f_cap));
651 f_cap.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
652 coda_g_fmt(file, priv, &f_cap);
653 f_cap.fmt.pix.width = f->fmt.pix.width;
654 f_cap.fmt.pix.height = f->fmt.pix.height;
655
656 ret = coda_try_fmt_vid_cap(file, priv, &f_cap);
657 if (ret)
658 return ret;
659
660 return coda_s_fmt(ctx, &f_cap);
661 }
662
663 static int coda_reqbufs(struct file *file, void *priv,
664 struct v4l2_requestbuffers *rb)
665 {
666 struct coda_ctx *ctx = fh_to_ctx(priv);
667 int ret;
668
669 ret = v4l2_m2m_reqbufs(file, ctx->fh.m2m_ctx, rb);
670 if (ret)
671 return ret;
672
673 /*
674 * Allow to allocate instance specific per-context buffers, such as
675 * bitstream ringbuffer, slice buffer, work buffer, etc. if needed.
676 */
677 if (rb->type == V4L2_BUF_TYPE_VIDEO_OUTPUT && ctx->ops->reqbufs)
678 return ctx->ops->reqbufs(ctx, rb);
679
680 return 0;
681 }
682
683 static int coda_qbuf(struct file *file, void *priv,
684 struct v4l2_buffer *buf)
685 {
686 struct coda_ctx *ctx = fh_to_ctx(priv);
687
688 return v4l2_m2m_qbuf(file, ctx->fh.m2m_ctx, buf);
689 }
690
691 static bool coda_buf_is_end_of_stream(struct coda_ctx *ctx,
692 struct vb2_v4l2_buffer *buf)
693 {
694 struct vb2_queue *src_vq;
695
696 src_vq = v4l2_m2m_get_vq(ctx->fh.m2m_ctx, V4L2_BUF_TYPE_VIDEO_OUTPUT);
697
698 return ((ctx->bit_stream_param & CODA_BIT_STREAM_END_FLAG) &&
699 (buf->sequence == (ctx->qsequence - 1)));
700 }
701
702 void coda_m2m_buf_done(struct coda_ctx *ctx, struct vb2_v4l2_buffer *buf,
703 enum vb2_buffer_state state)
704 {
705 const struct v4l2_event eos_event = {
706 .type = V4L2_EVENT_EOS
707 };
708
709 if (coda_buf_is_end_of_stream(ctx, buf)) {
710 buf->flags |= V4L2_BUF_FLAG_LAST;
711
712 v4l2_event_queue_fh(&ctx->fh, &eos_event);
713 }
714
715 v4l2_m2m_buf_done(buf, state);
716 }
717
718 static int coda_g_selection(struct file *file, void *fh,
719 struct v4l2_selection *s)
720 {
721 struct coda_ctx *ctx = fh_to_ctx(fh);
722 struct coda_q_data *q_data;
723 struct v4l2_rect r, *rsel;
724
725 q_data = get_q_data(ctx, s->type);
726 if (!q_data)
727 return -EINVAL;
728
729 r.left = 0;
730 r.top = 0;
731 r.width = q_data->width;
732 r.height = q_data->height;
733 rsel = &q_data->rect;
734
735 switch (s->target) {
736 case V4L2_SEL_TGT_CROP_DEFAULT:
737 case V4L2_SEL_TGT_CROP_BOUNDS:
738 rsel = &r;
739 /* fallthrough */
740 case V4L2_SEL_TGT_CROP:
741 if (s->type != V4L2_BUF_TYPE_VIDEO_OUTPUT)
742 return -EINVAL;
743 break;
744 case V4L2_SEL_TGT_COMPOSE_BOUNDS:
745 case V4L2_SEL_TGT_COMPOSE_PADDED:
746 rsel = &r;
747 /* fallthrough */
748 case V4L2_SEL_TGT_COMPOSE:
749 case V4L2_SEL_TGT_COMPOSE_DEFAULT:
750 if (s->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
751 return -EINVAL;
752 break;
753 default:
754 return -EINVAL;
755 }
756
757 s->r = *rsel;
758
759 return 0;
760 }
761
762 static int coda_try_decoder_cmd(struct file *file, void *fh,
763 struct v4l2_decoder_cmd *dc)
764 {
765 if (dc->cmd != V4L2_DEC_CMD_STOP)
766 return -EINVAL;
767
768 if (dc->flags & V4L2_DEC_CMD_STOP_TO_BLACK)
769 return -EINVAL;
770
771 if (!(dc->flags & V4L2_DEC_CMD_STOP_IMMEDIATELY) && (dc->stop.pts != 0))
772 return -EINVAL;
773
774 return 0;
775 }
776
777 static int coda_decoder_cmd(struct file *file, void *fh,
778 struct v4l2_decoder_cmd *dc)
779 {
780 struct coda_ctx *ctx = fh_to_ctx(fh);
781 int ret;
782
783 ret = coda_try_decoder_cmd(file, fh, dc);
784 if (ret < 0)
785 return ret;
786
787 /* Ignore decoder stop command silently in encoder context */
788 if (ctx->inst_type != CODA_INST_DECODER)
789 return 0;
790
791 /* Set the stream-end flag on this context */
792 coda_bit_stream_end_flag(ctx);
793 ctx->hold = false;
794 v4l2_m2m_try_schedule(ctx->fh.m2m_ctx);
795
796 return 0;
797 }
798
799 static int coda_g_parm(struct file *file, void *fh, struct v4l2_streamparm *a)
800 {
801 struct coda_ctx *ctx = fh_to_ctx(fh);
802 struct v4l2_fract *tpf;
803
804 if (a->type != V4L2_BUF_TYPE_VIDEO_OUTPUT)
805 return -EINVAL;
806
807 a->parm.output.capability = V4L2_CAP_TIMEPERFRAME;
808 tpf = &a->parm.output.timeperframe;
809 tpf->denominator = ctx->params.framerate & CODA_FRATE_RES_MASK;
810 tpf->numerator = 1 + (ctx->params.framerate >>
811 CODA_FRATE_DIV_OFFSET);
812
813 return 0;
814 }
815
816 /*
817 * Approximate timeperframe v4l2_fract with values that can be written
818 * into the 16-bit CODA_FRATE_DIV and CODA_FRATE_RES fields.
819 */
820 static void coda_approximate_timeperframe(struct v4l2_fract *timeperframe)
821 {
822 struct v4l2_fract s = *timeperframe;
823 struct v4l2_fract f0;
824 struct v4l2_fract f1 = { 1, 0 };
825 struct v4l2_fract f2 = { 0, 1 };
826 unsigned int i, div, s_denominator;
827
828 /* Lower bound is 1/65535 */
829 if (s.numerator == 0 || s.denominator / s.numerator > 65535) {
830 timeperframe->numerator = 1;
831 timeperframe->denominator = 65535;
832 return;
833 }
834
835 /* Upper bound is 65536/1, map everything above to infinity */
836 if (s.denominator == 0 || s.numerator / s.denominator > 65536) {
837 timeperframe->numerator = 1;
838 timeperframe->denominator = 0;
839 return;
840 }
841
842 /* Reduce fraction to lowest terms */
843 div = gcd(s.numerator, s.denominator);
844 if (div > 1) {
845 s.numerator /= div;
846 s.denominator /= div;
847 }
848
849 if (s.numerator <= 65536 && s.denominator < 65536) {
850 *timeperframe = s;
851 return;
852 }
853
854 /* Find successive convergents from continued fraction expansion */
855 while (f2.numerator <= 65536 && f2.denominator < 65536) {
856 f0 = f1;
857 f1 = f2;
858
859 /* Stop when f2 exactly equals timeperframe */
860 if (s.numerator == 0)
861 break;
862
863 i = s.denominator / s.numerator;
864
865 f2.numerator = f0.numerator + i * f1.numerator;
866 f2.denominator = f0.denominator + i * f2.denominator;
867
868 s_denominator = s.numerator;
869 s.numerator = s.denominator % s.numerator;
870 s.denominator = s_denominator;
871 }
872
873 *timeperframe = f1;
874 }
875
876 static uint32_t coda_timeperframe_to_frate(struct v4l2_fract *timeperframe)
877 {
878 return ((timeperframe->numerator - 1) << CODA_FRATE_DIV_OFFSET) |
879 timeperframe->denominator;
880 }
881
882 static int coda_s_parm(struct file *file, void *fh, struct v4l2_streamparm *a)
883 {
884 struct coda_ctx *ctx = fh_to_ctx(fh);
885 struct v4l2_fract *tpf;
886
887 if (a->type != V4L2_BUF_TYPE_VIDEO_OUTPUT)
888 return -EINVAL;
889
890 tpf = &a->parm.output.timeperframe;
891 coda_approximate_timeperframe(tpf);
892 ctx->params.framerate = coda_timeperframe_to_frate(tpf);
893
894 return 0;
895 }
896
897 static int coda_subscribe_event(struct v4l2_fh *fh,
898 const struct v4l2_event_subscription *sub)
899 {
900 switch (sub->type) {
901 case V4L2_EVENT_EOS:
902 return v4l2_event_subscribe(fh, sub, 0, NULL);
903 default:
904 return v4l2_ctrl_subscribe_event(fh, sub);
905 }
906 }
907
908 static const struct v4l2_ioctl_ops coda_ioctl_ops = {
909 .vidioc_querycap = coda_querycap,
910
911 .vidioc_enum_fmt_vid_cap = coda_enum_fmt,
912 .vidioc_g_fmt_vid_cap = coda_g_fmt,
913 .vidioc_try_fmt_vid_cap = coda_try_fmt_vid_cap,
914 .vidioc_s_fmt_vid_cap = coda_s_fmt_vid_cap,
915
916 .vidioc_enum_fmt_vid_out = coda_enum_fmt,
917 .vidioc_g_fmt_vid_out = coda_g_fmt,
918 .vidioc_try_fmt_vid_out = coda_try_fmt_vid_out,
919 .vidioc_s_fmt_vid_out = coda_s_fmt_vid_out,
920
921 .vidioc_reqbufs = coda_reqbufs,
922 .vidioc_querybuf = v4l2_m2m_ioctl_querybuf,
923
924 .vidioc_qbuf = coda_qbuf,
925 .vidioc_expbuf = v4l2_m2m_ioctl_expbuf,
926 .vidioc_dqbuf = v4l2_m2m_ioctl_dqbuf,
927 .vidioc_create_bufs = v4l2_m2m_ioctl_create_bufs,
928 .vidioc_prepare_buf = v4l2_m2m_ioctl_prepare_buf,
929
930 .vidioc_streamon = v4l2_m2m_ioctl_streamon,
931 .vidioc_streamoff = v4l2_m2m_ioctl_streamoff,
932
933 .vidioc_g_selection = coda_g_selection,
934
935 .vidioc_try_decoder_cmd = coda_try_decoder_cmd,
936 .vidioc_decoder_cmd = coda_decoder_cmd,
937
938 .vidioc_g_parm = coda_g_parm,
939 .vidioc_s_parm = coda_s_parm,
940
941 .vidioc_subscribe_event = coda_subscribe_event,
942 .vidioc_unsubscribe_event = v4l2_event_unsubscribe,
943 };
944
945 /*
946 * Mem-to-mem operations.
947 */
948
949 static void coda_device_run(void *m2m_priv)
950 {
951 struct coda_ctx *ctx = m2m_priv;
952 struct coda_dev *dev = ctx->dev;
953
954 queue_work(dev->workqueue, &ctx->pic_run_work);
955 }
956
957 static void coda_pic_run_work(struct work_struct *work)
958 {
959 struct coda_ctx *ctx = container_of(work, struct coda_ctx, pic_run_work);
960 struct coda_dev *dev = ctx->dev;
961 int ret;
962
963 mutex_lock(&ctx->buffer_mutex);
964 mutex_lock(&dev->coda_mutex);
965
966 ret = ctx->ops->prepare_run(ctx);
967 if (ret < 0 && ctx->inst_type == CODA_INST_DECODER) {
968 mutex_unlock(&dev->coda_mutex);
969 mutex_unlock(&ctx->buffer_mutex);
970 /* job_finish scheduled by prepare_decode */
971 return;
972 }
973
974 if (!wait_for_completion_timeout(&ctx->completion,
975 msecs_to_jiffies(1000))) {
976 dev_err(&dev->plat_dev->dev, "CODA PIC_RUN timeout\n");
977
978 ctx->hold = true;
979
980 coda_hw_reset(ctx);
981 } else if (!ctx->aborting) {
982 ctx->ops->finish_run(ctx);
983 }
984
985 if ((ctx->aborting || (!ctx->streamon_cap && !ctx->streamon_out)) &&
986 ctx->ops->seq_end_work)
987 queue_work(dev->workqueue, &ctx->seq_end_work);
988
989 mutex_unlock(&dev->coda_mutex);
990 mutex_unlock(&ctx->buffer_mutex);
991
992 v4l2_m2m_job_finish(ctx->dev->m2m_dev, ctx->fh.m2m_ctx);
993 }
994
995 static int coda_job_ready(void *m2m_priv)
996 {
997 struct coda_ctx *ctx = m2m_priv;
998 int src_bufs = v4l2_m2m_num_src_bufs_ready(ctx->fh.m2m_ctx);
999
1000 /*
1001 * For both 'P' and 'key' frame cases 1 picture
1002 * and 1 frame are needed. In the decoder case,
1003 * the compressed frame can be in the bitstream.
1004 */
1005 if (!src_bufs && ctx->inst_type != CODA_INST_DECODER) {
1006 v4l2_dbg(1, coda_debug, &ctx->dev->v4l2_dev,
1007 "not ready: not enough video buffers.\n");
1008 return 0;
1009 }
1010
1011 if (!v4l2_m2m_num_dst_bufs_ready(ctx->fh.m2m_ctx)) {
1012 v4l2_dbg(1, coda_debug, &ctx->dev->v4l2_dev,
1013 "not ready: not enough video capture buffers.\n");
1014 return 0;
1015 }
1016
1017 if (ctx->inst_type == CODA_INST_DECODER && ctx->use_bit) {
1018 bool stream_end = ctx->bit_stream_param &
1019 CODA_BIT_STREAM_END_FLAG;
1020 int num_metas = ctx->num_metas;
1021
1022 if (ctx->hold && !src_bufs) {
1023 v4l2_dbg(1, coda_debug, &ctx->dev->v4l2_dev,
1024 "%d: not ready: on hold for more buffers.\n",
1025 ctx->idx);
1026 return 0;
1027 }
1028
1029 if (!stream_end && (num_metas + src_bufs) < 2) {
1030 v4l2_dbg(1, coda_debug, &ctx->dev->v4l2_dev,
1031 "%d: not ready: need 2 buffers available (%d, %d)\n",
1032 ctx->idx, num_metas, src_bufs);
1033 return 0;
1034 }
1035
1036
1037 if (!src_bufs && !stream_end &&
1038 (coda_get_bitstream_payload(ctx) < 512)) {
1039 v4l2_dbg(1, coda_debug, &ctx->dev->v4l2_dev,
1040 "%d: not ready: not enough bitstream data (%d).\n",
1041 ctx->idx, coda_get_bitstream_payload(ctx));
1042 return 0;
1043 }
1044 }
1045
1046 if (ctx->aborting) {
1047 v4l2_dbg(1, coda_debug, &ctx->dev->v4l2_dev,
1048 "not ready: aborting\n");
1049 return 0;
1050 }
1051
1052 v4l2_dbg(1, coda_debug, &ctx->dev->v4l2_dev,
1053 "job ready\n");
1054
1055 return 1;
1056 }
1057
1058 static void coda_job_abort(void *priv)
1059 {
1060 struct coda_ctx *ctx = priv;
1061
1062 ctx->aborting = 1;
1063
1064 v4l2_dbg(1, coda_debug, &ctx->dev->v4l2_dev,
1065 "Aborting task\n");
1066 }
1067
1068 static void coda_lock(void *m2m_priv)
1069 {
1070 struct coda_ctx *ctx = m2m_priv;
1071 struct coda_dev *pcdev = ctx->dev;
1072
1073 mutex_lock(&pcdev->dev_mutex);
1074 }
1075
1076 static void coda_unlock(void *m2m_priv)
1077 {
1078 struct coda_ctx *ctx = m2m_priv;
1079 struct coda_dev *pcdev = ctx->dev;
1080
1081 mutex_unlock(&pcdev->dev_mutex);
1082 }
1083
1084 static const struct v4l2_m2m_ops coda_m2m_ops = {
1085 .device_run = coda_device_run,
1086 .job_ready = coda_job_ready,
1087 .job_abort = coda_job_abort,
1088 .lock = coda_lock,
1089 .unlock = coda_unlock,
1090 };
1091
1092 static void set_default_params(struct coda_ctx *ctx)
1093 {
1094 unsigned int max_w, max_h, usize, csize;
1095
1096 ctx->codec = coda_find_codec(ctx->dev, ctx->cvd->src_formats[0],
1097 ctx->cvd->dst_formats[0]);
1098 max_w = min(ctx->codec->max_w, 1920U);
1099 max_h = min(ctx->codec->max_h, 1088U);
1100 usize = max_w * max_h * 3 / 2;
1101 csize = coda_estimate_sizeimage(ctx, usize, max_w, max_h);
1102
1103 ctx->params.codec_mode = ctx->codec->mode;
1104 ctx->colorspace = V4L2_COLORSPACE_REC709;
1105 ctx->params.framerate = 30;
1106
1107 /* Default formats for output and input queues */
1108 ctx->q_data[V4L2_M2M_SRC].fourcc = ctx->cvd->src_formats[0];
1109 ctx->q_data[V4L2_M2M_DST].fourcc = ctx->cvd->dst_formats[0];
1110 ctx->q_data[V4L2_M2M_SRC].width = max_w;
1111 ctx->q_data[V4L2_M2M_SRC].height = max_h;
1112 ctx->q_data[V4L2_M2M_DST].width = max_w;
1113 ctx->q_data[V4L2_M2M_DST].height = max_h;
1114 if (ctx->codec->src_fourcc == V4L2_PIX_FMT_YUV420) {
1115 ctx->q_data[V4L2_M2M_SRC].bytesperline = max_w;
1116 ctx->q_data[V4L2_M2M_SRC].sizeimage = usize;
1117 ctx->q_data[V4L2_M2M_DST].bytesperline = 0;
1118 ctx->q_data[V4L2_M2M_DST].sizeimage = csize;
1119 } else {
1120 ctx->q_data[V4L2_M2M_SRC].bytesperline = 0;
1121 ctx->q_data[V4L2_M2M_SRC].sizeimage = csize;
1122 ctx->q_data[V4L2_M2M_DST].bytesperline = max_w;
1123 ctx->q_data[V4L2_M2M_DST].sizeimage = usize;
1124 }
1125 ctx->q_data[V4L2_M2M_SRC].rect.width = max_w;
1126 ctx->q_data[V4L2_M2M_SRC].rect.height = max_h;
1127 ctx->q_data[V4L2_M2M_DST].rect.width = max_w;
1128 ctx->q_data[V4L2_M2M_DST].rect.height = max_h;
1129
1130 /*
1131 * Since the RBC2AXI logic only supports a single chroma plane,
1132 * macroblock tiling only works for to NV12 pixel format.
1133 */
1134 ctx->tiled_map_type = GDI_LINEAR_FRAME_MAP;
1135 }
1136
1137 /*
1138 * Queue operations
1139 */
1140 static int coda_queue_setup(struct vb2_queue *vq,
1141 unsigned int *nbuffers, unsigned int *nplanes,
1142 unsigned int sizes[], struct device *alloc_devs[])
1143 {
1144 struct coda_ctx *ctx = vb2_get_drv_priv(vq);
1145 struct coda_q_data *q_data;
1146 unsigned int size;
1147
1148 q_data = get_q_data(ctx, vq->type);
1149 size = q_data->sizeimage;
1150
1151 *nplanes = 1;
1152 sizes[0] = size;
1153
1154 v4l2_dbg(1, coda_debug, &ctx->dev->v4l2_dev,
1155 "get %d buffer(s) of size %d each.\n", *nbuffers, size);
1156
1157 return 0;
1158 }
1159
1160 static int coda_buf_prepare(struct vb2_buffer *vb)
1161 {
1162 struct coda_ctx *ctx = vb2_get_drv_priv(vb->vb2_queue);
1163 struct coda_q_data *q_data;
1164
1165 q_data = get_q_data(ctx, vb->vb2_queue->type);
1166
1167 if (vb2_plane_size(vb, 0) < q_data->sizeimage) {
1168 v4l2_warn(&ctx->dev->v4l2_dev,
1169 "%s data will not fit into plane (%lu < %lu)\n",
1170 __func__, vb2_plane_size(vb, 0),
1171 (long)q_data->sizeimage);
1172 return -EINVAL;
1173 }
1174
1175 return 0;
1176 }
1177
1178 static void coda_buf_queue(struct vb2_buffer *vb)
1179 {
1180 struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
1181 struct coda_ctx *ctx = vb2_get_drv_priv(vb->vb2_queue);
1182 struct vb2_queue *vq = vb->vb2_queue;
1183 struct coda_q_data *q_data;
1184
1185 q_data = get_q_data(ctx, vb->vb2_queue->type);
1186
1187 /*
1188 * In the decoder case, immediately try to copy the buffer into the
1189 * bitstream ringbuffer and mark it as ready to be dequeued.
1190 */
1191 if (ctx->bitstream.size && vq->type == V4L2_BUF_TYPE_VIDEO_OUTPUT) {
1192 /*
1193 * For backwards compatibility, queuing an empty buffer marks
1194 * the stream end
1195 */
1196 if (vb2_get_plane_payload(vb, 0) == 0)
1197 coda_bit_stream_end_flag(ctx);
1198 mutex_lock(&ctx->bitstream_mutex);
1199 v4l2_m2m_buf_queue(ctx->fh.m2m_ctx, vbuf);
1200 if (vb2_is_streaming(vb->vb2_queue))
1201 coda_fill_bitstream(ctx, true);
1202 mutex_unlock(&ctx->bitstream_mutex);
1203 } else {
1204 v4l2_m2m_buf_queue(ctx->fh.m2m_ctx, vbuf);
1205 }
1206 }
1207
1208 int coda_alloc_aux_buf(struct coda_dev *dev, struct coda_aux_buf *buf,
1209 size_t size, const char *name, struct dentry *parent)
1210 {
1211 buf->vaddr = dma_alloc_coherent(&dev->plat_dev->dev, size, &buf->paddr,
1212 GFP_KERNEL);
1213 if (!buf->vaddr) {
1214 v4l2_err(&dev->v4l2_dev,
1215 "Failed to allocate %s buffer of size %u\n",
1216 name, size);
1217 return -ENOMEM;
1218 }
1219
1220 buf->size = size;
1221
1222 if (name && parent) {
1223 buf->blob.data = buf->vaddr;
1224 buf->blob.size = size;
1225 buf->dentry = debugfs_create_blob(name, 0644, parent,
1226 &buf->blob);
1227 if (!buf->dentry)
1228 dev_warn(&dev->plat_dev->dev,
1229 "failed to create debugfs entry %s\n", name);
1230 }
1231
1232 return 0;
1233 }
1234
1235 void coda_free_aux_buf(struct coda_dev *dev,
1236 struct coda_aux_buf *buf)
1237 {
1238 if (buf->vaddr) {
1239 dma_free_coherent(&dev->plat_dev->dev, buf->size,
1240 buf->vaddr, buf->paddr);
1241 buf->vaddr = NULL;
1242 buf->size = 0;
1243 debugfs_remove(buf->dentry);
1244 buf->dentry = NULL;
1245 }
1246 }
1247
1248 static int coda_start_streaming(struct vb2_queue *q, unsigned int count)
1249 {
1250 struct coda_ctx *ctx = vb2_get_drv_priv(q);
1251 struct v4l2_device *v4l2_dev = &ctx->dev->v4l2_dev;
1252 struct coda_q_data *q_data_src, *q_data_dst;
1253 struct vb2_v4l2_buffer *buf;
1254 int ret = 0;
1255
1256 if (count < 1)
1257 return -EINVAL;
1258
1259 q_data_src = get_q_data(ctx, V4L2_BUF_TYPE_VIDEO_OUTPUT);
1260 if (q->type == V4L2_BUF_TYPE_VIDEO_OUTPUT) {
1261 if (ctx->inst_type == CODA_INST_DECODER && ctx->use_bit) {
1262 /* copy the buffers that were queued before streamon */
1263 mutex_lock(&ctx->bitstream_mutex);
1264 coda_fill_bitstream(ctx, false);
1265 mutex_unlock(&ctx->bitstream_mutex);
1266
1267 if (coda_get_bitstream_payload(ctx) < 512) {
1268 ret = -EINVAL;
1269 goto err;
1270 }
1271 }
1272
1273 ctx->streamon_out = 1;
1274 } else {
1275 ctx->streamon_cap = 1;
1276 }
1277
1278 /* Don't start the coda unless both queues are on */
1279 if (!(ctx->streamon_out & ctx->streamon_cap))
1280 return 0;
1281
1282 q_data_dst = get_q_data(ctx, V4L2_BUF_TYPE_VIDEO_CAPTURE);
1283 if ((q_data_src->width != q_data_dst->width &&
1284 round_up(q_data_src->width, 16) != q_data_dst->width) ||
1285 (q_data_src->height != q_data_dst->height &&
1286 round_up(q_data_src->height, 16) != q_data_dst->height)) {
1287 v4l2_err(v4l2_dev, "can't convert %dx%d to %dx%d\n",
1288 q_data_src->width, q_data_src->height,
1289 q_data_dst->width, q_data_dst->height);
1290 ret = -EINVAL;
1291 goto err;
1292 }
1293
1294 /* Allow BIT decoder device_run with no new buffers queued */
1295 if (ctx->inst_type == CODA_INST_DECODER && ctx->use_bit)
1296 v4l2_m2m_set_src_buffered(ctx->fh.m2m_ctx, true);
1297
1298 ctx->gopcounter = ctx->params.gop_size - 1;
1299
1300 ctx->codec = coda_find_codec(ctx->dev, q_data_src->fourcc,
1301 q_data_dst->fourcc);
1302 if (!ctx->codec) {
1303 v4l2_err(v4l2_dev, "couldn't tell instance type.\n");
1304 ret = -EINVAL;
1305 goto err;
1306 }
1307
1308 if (q_data_dst->fourcc == V4L2_PIX_FMT_JPEG)
1309 ctx->params.gop_size = 1;
1310 ctx->gopcounter = ctx->params.gop_size - 1;
1311
1312 ret = ctx->ops->start_streaming(ctx);
1313 if (ctx->inst_type == CODA_INST_DECODER) {
1314 if (ret == -EAGAIN)
1315 return 0;
1316 else if (ret < 0)
1317 goto err;
1318 }
1319
1320 return ret;
1321
1322 err:
1323 if (q->type == V4L2_BUF_TYPE_VIDEO_OUTPUT) {
1324 while ((buf = v4l2_m2m_src_buf_remove(ctx->fh.m2m_ctx)))
1325 v4l2_m2m_buf_done(buf, VB2_BUF_STATE_QUEUED);
1326 } else {
1327 while ((buf = v4l2_m2m_dst_buf_remove(ctx->fh.m2m_ctx)))
1328 v4l2_m2m_buf_done(buf, VB2_BUF_STATE_QUEUED);
1329 }
1330 return ret;
1331 }
1332
1333 static void coda_stop_streaming(struct vb2_queue *q)
1334 {
1335 struct coda_ctx *ctx = vb2_get_drv_priv(q);
1336 struct coda_dev *dev = ctx->dev;
1337 struct vb2_v4l2_buffer *buf;
1338 unsigned long flags;
1339 bool stop;
1340
1341 stop = ctx->streamon_out && ctx->streamon_cap;
1342
1343 if (q->type == V4L2_BUF_TYPE_VIDEO_OUTPUT) {
1344 v4l2_dbg(1, coda_debug, &dev->v4l2_dev,
1345 "%s: output\n", __func__);
1346 ctx->streamon_out = 0;
1347
1348 coda_bit_stream_end_flag(ctx);
1349
1350 ctx->qsequence = 0;
1351
1352 while ((buf = v4l2_m2m_src_buf_remove(ctx->fh.m2m_ctx)))
1353 v4l2_m2m_buf_done(buf, VB2_BUF_STATE_ERROR);
1354 } else {
1355 v4l2_dbg(1, coda_debug, &dev->v4l2_dev,
1356 "%s: capture\n", __func__);
1357 ctx->streamon_cap = 0;
1358
1359 ctx->osequence = 0;
1360 ctx->sequence_offset = 0;
1361
1362 while ((buf = v4l2_m2m_dst_buf_remove(ctx->fh.m2m_ctx)))
1363 v4l2_m2m_buf_done(buf, VB2_BUF_STATE_ERROR);
1364 }
1365
1366 if (stop) {
1367 struct coda_buffer_meta *meta;
1368
1369 if (ctx->ops->seq_end_work) {
1370 queue_work(dev->workqueue, &ctx->seq_end_work);
1371 flush_work(&ctx->seq_end_work);
1372 }
1373 spin_lock_irqsave(&ctx->buffer_meta_lock, flags);
1374 while (!list_empty(&ctx->buffer_meta_list)) {
1375 meta = list_first_entry(&ctx->buffer_meta_list,
1376 struct coda_buffer_meta, list);
1377 list_del(&meta->list);
1378 kfree(meta);
1379 }
1380 ctx->num_metas = 0;
1381 spin_unlock_irqrestore(&ctx->buffer_meta_lock, flags);
1382 kfifo_init(&ctx->bitstream_fifo,
1383 ctx->bitstream.vaddr, ctx->bitstream.size);
1384 ctx->runcounter = 0;
1385 ctx->aborting = 0;
1386 }
1387
1388 if (!ctx->streamon_out && !ctx->streamon_cap)
1389 ctx->bit_stream_param &= ~CODA_BIT_STREAM_END_FLAG;
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
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 case V4L2_CID_MPEG_VIDEO_VBV_DELAY:
1478 ctx->params.vbv_delay = ctrl->val;
1479 break;
1480 case V4L2_CID_MPEG_VIDEO_VBV_SIZE:
1481 ctx->params.vbv_size = min(ctrl->val * 8192, 0x7fffffff);
1482 break;
1483 default:
1484 v4l2_dbg(1, coda_debug, &ctx->dev->v4l2_dev,
1485 "Invalid control, id=%d, val=%d\n",
1486 ctrl->id, ctrl->val);
1487 return -EINVAL;
1488 }
1489
1490 return 0;
1491 }
1492
1493 static const struct v4l2_ctrl_ops coda_ctrl_ops = {
1494 .s_ctrl = coda_s_ctrl,
1495 };
1496
1497 static void coda_encode_ctrls(struct coda_ctx *ctx)
1498 {
1499 v4l2_ctrl_new_std(&ctx->ctrls, &coda_ctrl_ops,
1500 V4L2_CID_MPEG_VIDEO_BITRATE, 0, 32767000, 1000, 0);
1501 v4l2_ctrl_new_std(&ctx->ctrls, &coda_ctrl_ops,
1502 V4L2_CID_MPEG_VIDEO_GOP_SIZE, 1, 60, 1, 16);
1503 v4l2_ctrl_new_std(&ctx->ctrls, &coda_ctrl_ops,
1504 V4L2_CID_MPEG_VIDEO_H264_I_FRAME_QP, 0, 51, 1, 25);
1505 v4l2_ctrl_new_std(&ctx->ctrls, &coda_ctrl_ops,
1506 V4L2_CID_MPEG_VIDEO_H264_P_FRAME_QP, 0, 51, 1, 25);
1507 if (ctx->dev->devtype->product != CODA_960) {
1508 v4l2_ctrl_new_std(&ctx->ctrls, &coda_ctrl_ops,
1509 V4L2_CID_MPEG_VIDEO_H264_MIN_QP, 0, 51, 1, 12);
1510 }
1511 v4l2_ctrl_new_std(&ctx->ctrls, &coda_ctrl_ops,
1512 V4L2_CID_MPEG_VIDEO_H264_MAX_QP, 0, 51, 1, 51);
1513 v4l2_ctrl_new_std(&ctx->ctrls, &coda_ctrl_ops,
1514 V4L2_CID_MPEG_VIDEO_H264_LOOP_FILTER_ALPHA, 0, 15, 1, 0);
1515 v4l2_ctrl_new_std(&ctx->ctrls, &coda_ctrl_ops,
1516 V4L2_CID_MPEG_VIDEO_H264_LOOP_FILTER_BETA, 0, 15, 1, 0);
1517 v4l2_ctrl_new_std_menu(&ctx->ctrls, &coda_ctrl_ops,
1518 V4L2_CID_MPEG_VIDEO_H264_LOOP_FILTER_MODE,
1519 V4L2_MPEG_VIDEO_H264_LOOP_FILTER_MODE_DISABLED, 0x0,
1520 V4L2_MPEG_VIDEO_H264_LOOP_FILTER_MODE_ENABLED);
1521 v4l2_ctrl_new_std(&ctx->ctrls, &coda_ctrl_ops,
1522 V4L2_CID_MPEG_VIDEO_MPEG4_I_FRAME_QP, 1, 31, 1, 2);
1523 v4l2_ctrl_new_std(&ctx->ctrls, &coda_ctrl_ops,
1524 V4L2_CID_MPEG_VIDEO_MPEG4_P_FRAME_QP, 1, 31, 1, 2);
1525 v4l2_ctrl_new_std_menu(&ctx->ctrls, &coda_ctrl_ops,
1526 V4L2_CID_MPEG_VIDEO_MULTI_SLICE_MODE,
1527 V4L2_MPEG_VIDEO_MULTI_SICE_MODE_MAX_BYTES, 0x0,
1528 V4L2_MPEG_VIDEO_MULTI_SLICE_MODE_SINGLE);
1529 v4l2_ctrl_new_std(&ctx->ctrls, &coda_ctrl_ops,
1530 V4L2_CID_MPEG_VIDEO_MULTI_SLICE_MAX_MB, 1, 0x3fffffff, 1, 1);
1531 v4l2_ctrl_new_std(&ctx->ctrls, &coda_ctrl_ops,
1532 V4L2_CID_MPEG_VIDEO_MULTI_SLICE_MAX_BYTES, 1, 0x3fffffff, 1,
1533 500);
1534 v4l2_ctrl_new_std_menu(&ctx->ctrls, &coda_ctrl_ops,
1535 V4L2_CID_MPEG_VIDEO_HEADER_MODE,
1536 V4L2_MPEG_VIDEO_HEADER_MODE_JOINED_WITH_1ST_FRAME,
1537 (1 << V4L2_MPEG_VIDEO_HEADER_MODE_SEPARATE),
1538 V4L2_MPEG_VIDEO_HEADER_MODE_JOINED_WITH_1ST_FRAME);
1539 v4l2_ctrl_new_std(&ctx->ctrls, &coda_ctrl_ops,
1540 V4L2_CID_MPEG_VIDEO_CYCLIC_INTRA_REFRESH_MB, 0,
1541 1920 * 1088 / 256, 1, 0);
1542 v4l2_ctrl_new_std(&ctx->ctrls, &coda_ctrl_ops,
1543 V4L2_CID_MPEG_VIDEO_VBV_DELAY, 0, 0x7fff, 1, 0);
1544 /*
1545 * The maximum VBV size value is 0x7fffffff bits,
1546 * one bit less than 262144 KiB
1547 */
1548 v4l2_ctrl_new_std(&ctx->ctrls, &coda_ctrl_ops,
1549 V4L2_CID_MPEG_VIDEO_VBV_SIZE, 0, 262144, 1, 0);
1550 }
1551
1552 static void coda_jpeg_encode_ctrls(struct coda_ctx *ctx)
1553 {
1554 v4l2_ctrl_new_std(&ctx->ctrls, &coda_ctrl_ops,
1555 V4L2_CID_JPEG_COMPRESSION_QUALITY, 5, 100, 1, 50);
1556 v4l2_ctrl_new_std(&ctx->ctrls, &coda_ctrl_ops,
1557 V4L2_CID_JPEG_RESTART_INTERVAL, 0, 100, 1, 0);
1558 }
1559
1560 static int coda_ctrls_setup(struct coda_ctx *ctx)
1561 {
1562 v4l2_ctrl_handler_init(&ctx->ctrls, 2);
1563
1564 v4l2_ctrl_new_std(&ctx->ctrls, &coda_ctrl_ops,
1565 V4L2_CID_HFLIP, 0, 1, 1, 0);
1566 v4l2_ctrl_new_std(&ctx->ctrls, &coda_ctrl_ops,
1567 V4L2_CID_VFLIP, 0, 1, 1, 0);
1568 if (ctx->inst_type == CODA_INST_ENCODER) {
1569 if (ctx->cvd->dst_formats[0] == V4L2_PIX_FMT_JPEG)
1570 coda_jpeg_encode_ctrls(ctx);
1571 else
1572 coda_encode_ctrls(ctx);
1573 }
1574
1575 if (ctx->ctrls.error) {
1576 v4l2_err(&ctx->dev->v4l2_dev,
1577 "control initialization error (%d)",
1578 ctx->ctrls.error);
1579 return -EINVAL;
1580 }
1581
1582 return v4l2_ctrl_handler_setup(&ctx->ctrls);
1583 }
1584
1585 static int coda_queue_init(struct coda_ctx *ctx, struct vb2_queue *vq)
1586 {
1587 vq->drv_priv = ctx;
1588 vq->ops = &coda_qops;
1589 vq->buf_struct_size = sizeof(struct v4l2_m2m_buffer);
1590 vq->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_COPY;
1591 vq->lock = &ctx->dev->dev_mutex;
1592 /* One way to indicate end-of-stream for coda is to set the
1593 * bytesused == 0. However by default videobuf2 handles bytesused
1594 * equal to 0 as a special case and changes its value to the size
1595 * of the buffer. Set the allow_zero_bytesused flag, so
1596 * that videobuf2 will keep the value of bytesused intact.
1597 */
1598 vq->allow_zero_bytesused = 1;
1599 vq->dev = &ctx->dev->plat_dev->dev;
1600
1601 return vb2_queue_init(vq);
1602 }
1603
1604 int coda_encoder_queue_init(void *priv, struct vb2_queue *src_vq,
1605 struct vb2_queue *dst_vq)
1606 {
1607 int ret;
1608
1609 src_vq->type = V4L2_BUF_TYPE_VIDEO_OUTPUT;
1610 src_vq->io_modes = VB2_DMABUF | VB2_MMAP;
1611 src_vq->mem_ops = &vb2_dma_contig_memops;
1612
1613 ret = coda_queue_init(priv, src_vq);
1614 if (ret)
1615 return ret;
1616
1617 dst_vq->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
1618 dst_vq->io_modes = VB2_DMABUF | VB2_MMAP;
1619 dst_vq->mem_ops = &vb2_dma_contig_memops;
1620
1621 return coda_queue_init(priv, dst_vq);
1622 }
1623
1624 int coda_decoder_queue_init(void *priv, struct vb2_queue *src_vq,
1625 struct vb2_queue *dst_vq)
1626 {
1627 int ret;
1628
1629 src_vq->type = V4L2_BUF_TYPE_VIDEO_OUTPUT;
1630 src_vq->io_modes = VB2_DMABUF | VB2_MMAP | VB2_USERPTR;
1631 src_vq->mem_ops = &vb2_vmalloc_memops;
1632
1633 ret = coda_queue_init(priv, src_vq);
1634 if (ret)
1635 return ret;
1636
1637 dst_vq->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
1638 dst_vq->io_modes = VB2_DMABUF | VB2_MMAP;
1639 dst_vq->mem_ops = &vb2_dma_contig_memops;
1640
1641 return coda_queue_init(priv, dst_vq);
1642 }
1643
1644 static int coda_next_free_instance(struct coda_dev *dev)
1645 {
1646 int idx = ffz(dev->instance_mask);
1647
1648 if ((idx < 0) ||
1649 (dev->devtype->product == CODA_DX6 && idx > CODADX6_MAX_INSTANCES))
1650 return -EBUSY;
1651
1652 return idx;
1653 }
1654
1655 /*
1656 * File operations
1657 */
1658
1659 static int coda_open(struct file *file)
1660 {
1661 struct video_device *vdev = video_devdata(file);
1662 struct coda_dev *dev = video_get_drvdata(vdev);
1663 struct coda_ctx *ctx = NULL;
1664 char *name;
1665 int ret;
1666 int idx;
1667
1668 ctx = kzalloc(sizeof(*ctx), GFP_KERNEL);
1669 if (!ctx)
1670 return -ENOMEM;
1671
1672 idx = coda_next_free_instance(dev);
1673 if (idx < 0) {
1674 ret = idx;
1675 goto err_coda_max;
1676 }
1677 set_bit(idx, &dev->instance_mask);
1678
1679 name = kasprintf(GFP_KERNEL, "context%d", idx);
1680 if (!name) {
1681 ret = -ENOMEM;
1682 goto err_coda_name_init;
1683 }
1684
1685 ctx->debugfs_entry = debugfs_create_dir(name, dev->debugfs_root);
1686 kfree(name);
1687
1688 ctx->cvd = to_coda_video_device(vdev);
1689 ctx->inst_type = ctx->cvd->type;
1690 ctx->ops = ctx->cvd->ops;
1691 ctx->use_bit = !ctx->cvd->direct;
1692 init_completion(&ctx->completion);
1693 INIT_WORK(&ctx->pic_run_work, coda_pic_run_work);
1694 if (ctx->ops->seq_end_work)
1695 INIT_WORK(&ctx->seq_end_work, ctx->ops->seq_end_work);
1696 v4l2_fh_init(&ctx->fh, video_devdata(file));
1697 file->private_data = &ctx->fh;
1698 v4l2_fh_add(&ctx->fh);
1699 ctx->dev = dev;
1700 ctx->idx = idx;
1701 switch (dev->devtype->product) {
1702 case CODA_960:
1703 ctx->frame_mem_ctrl = 1 << 12;
1704 /* fallthrough */
1705 case CODA_7541:
1706 ctx->reg_idx = 0;
1707 break;
1708 default:
1709 ctx->reg_idx = idx;
1710 }
1711
1712 /* Power up and upload firmware if necessary */
1713 ret = pm_runtime_get_sync(&dev->plat_dev->dev);
1714 if (ret < 0) {
1715 v4l2_err(&dev->v4l2_dev, "failed to power up: %d\n", ret);
1716 goto err_pm_get;
1717 }
1718
1719 ret = clk_prepare_enable(dev->clk_per);
1720 if (ret)
1721 goto err_clk_per;
1722
1723 ret = clk_prepare_enable(dev->clk_ahb);
1724 if (ret)
1725 goto err_clk_ahb;
1726
1727 set_default_params(ctx);
1728 ctx->fh.m2m_ctx = v4l2_m2m_ctx_init(dev->m2m_dev, ctx,
1729 ctx->ops->queue_init);
1730 if (IS_ERR(ctx->fh.m2m_ctx)) {
1731 ret = PTR_ERR(ctx->fh.m2m_ctx);
1732
1733 v4l2_err(&dev->v4l2_dev, "%s return error (%d)\n",
1734 __func__, ret);
1735 goto err_ctx_init;
1736 }
1737
1738 ret = coda_ctrls_setup(ctx);
1739 if (ret) {
1740 v4l2_err(&dev->v4l2_dev, "failed to setup coda controls\n");
1741 goto err_ctrls_setup;
1742 }
1743
1744 ctx->fh.ctrl_handler = &ctx->ctrls;
1745
1746 mutex_init(&ctx->bitstream_mutex);
1747 mutex_init(&ctx->buffer_mutex);
1748 INIT_LIST_HEAD(&ctx->buffer_meta_list);
1749 spin_lock_init(&ctx->buffer_meta_lock);
1750
1751 coda_lock(ctx);
1752 list_add(&ctx->list, &dev->instances);
1753 coda_unlock(ctx);
1754
1755 v4l2_dbg(1, coda_debug, &dev->v4l2_dev, "Created instance %d (%p)\n",
1756 ctx->idx, ctx);
1757
1758 return 0;
1759
1760 err_ctrls_setup:
1761 v4l2_m2m_ctx_release(ctx->fh.m2m_ctx);
1762 err_ctx_init:
1763 clk_disable_unprepare(dev->clk_ahb);
1764 err_clk_ahb:
1765 clk_disable_unprepare(dev->clk_per);
1766 err_clk_per:
1767 pm_runtime_put_sync(&dev->plat_dev->dev);
1768 err_pm_get:
1769 v4l2_fh_del(&ctx->fh);
1770 v4l2_fh_exit(&ctx->fh);
1771 clear_bit(ctx->idx, &dev->instance_mask);
1772 err_coda_name_init:
1773 err_coda_max:
1774 kfree(ctx);
1775 return ret;
1776 }
1777
1778 static int coda_release(struct file *file)
1779 {
1780 struct coda_dev *dev = video_drvdata(file);
1781 struct coda_ctx *ctx = fh_to_ctx(file->private_data);
1782
1783 v4l2_dbg(1, coda_debug, &dev->v4l2_dev, "Releasing instance %p\n",
1784 ctx);
1785
1786 if (ctx->inst_type == CODA_INST_DECODER && ctx->use_bit)
1787 coda_bit_stream_end_flag(ctx);
1788
1789 /* If this instance is running, call .job_abort and wait for it to end */
1790 v4l2_m2m_ctx_release(ctx->fh.m2m_ctx);
1791
1792 /* In case the instance was not running, we still need to call SEQ_END */
1793 if (ctx->ops->seq_end_work) {
1794 queue_work(dev->workqueue, &ctx->seq_end_work);
1795 flush_work(&ctx->seq_end_work);
1796 }
1797
1798 coda_lock(ctx);
1799 list_del(&ctx->list);
1800 coda_unlock(ctx);
1801
1802 if (ctx->dev->devtype->product == CODA_DX6)
1803 coda_free_aux_buf(dev, &ctx->workbuf);
1804
1805 v4l2_ctrl_handler_free(&ctx->ctrls);
1806 clk_disable_unprepare(dev->clk_ahb);
1807 clk_disable_unprepare(dev->clk_per);
1808 pm_runtime_put_sync(&dev->plat_dev->dev);
1809 v4l2_fh_del(&ctx->fh);
1810 v4l2_fh_exit(&ctx->fh);
1811 clear_bit(ctx->idx, &dev->instance_mask);
1812 if (ctx->ops->release)
1813 ctx->ops->release(ctx);
1814 debugfs_remove_recursive(ctx->debugfs_entry);
1815 kfree(ctx);
1816
1817 return 0;
1818 }
1819
1820 static const struct v4l2_file_operations coda_fops = {
1821 .owner = THIS_MODULE,
1822 .open = coda_open,
1823 .release = coda_release,
1824 .poll = v4l2_m2m_fop_poll,
1825 .unlocked_ioctl = video_ioctl2,
1826 .mmap = v4l2_m2m_fop_mmap,
1827 };
1828
1829 static int coda_hw_init(struct coda_dev *dev)
1830 {
1831 u32 data;
1832 u16 *p;
1833 int i, ret;
1834
1835 ret = clk_prepare_enable(dev->clk_per);
1836 if (ret)
1837 goto err_clk_per;
1838
1839 ret = clk_prepare_enable(dev->clk_ahb);
1840 if (ret)
1841 goto err_clk_ahb;
1842
1843 if (dev->rstc)
1844 reset_control_reset(dev->rstc);
1845
1846 /*
1847 * Copy the first CODA_ISRAM_SIZE in the internal SRAM.
1848 * The 16-bit chars in the code buffer are in memory access
1849 * order, re-sort them to CODA order for register download.
1850 * Data in this SRAM survives a reboot.
1851 */
1852 p = (u16 *)dev->codebuf.vaddr;
1853 if (dev->devtype->product == CODA_DX6) {
1854 for (i = 0; i < (CODA_ISRAM_SIZE / 2); i++) {
1855 data = CODA_DOWN_ADDRESS_SET(i) |
1856 CODA_DOWN_DATA_SET(p[i ^ 1]);
1857 coda_write(dev, data, CODA_REG_BIT_CODE_DOWN);
1858 }
1859 } else {
1860 for (i = 0; i < (CODA_ISRAM_SIZE / 2); i++) {
1861 data = CODA_DOWN_ADDRESS_SET(i) |
1862 CODA_DOWN_DATA_SET(p[round_down(i, 4) +
1863 3 - (i % 4)]);
1864 coda_write(dev, data, CODA_REG_BIT_CODE_DOWN);
1865 }
1866 }
1867
1868 /* Clear registers */
1869 for (i = 0; i < 64; i++)
1870 coda_write(dev, 0, CODA_REG_BIT_CODE_BUF_ADDR + i * 4);
1871
1872 /* Tell the BIT where to find everything it needs */
1873 if (dev->devtype->product == CODA_960 ||
1874 dev->devtype->product == CODA_7541) {
1875 coda_write(dev, dev->tempbuf.paddr,
1876 CODA_REG_BIT_TEMP_BUF_ADDR);
1877 coda_write(dev, 0, CODA_REG_BIT_BIT_STREAM_PARAM);
1878 } else {
1879 coda_write(dev, dev->workbuf.paddr,
1880 CODA_REG_BIT_WORK_BUF_ADDR);
1881 }
1882 coda_write(dev, dev->codebuf.paddr,
1883 CODA_REG_BIT_CODE_BUF_ADDR);
1884 coda_write(dev, 0, CODA_REG_BIT_CODE_RUN);
1885
1886 /* Set default values */
1887 switch (dev->devtype->product) {
1888 case CODA_DX6:
1889 coda_write(dev, CODADX6_STREAM_BUF_PIC_FLUSH,
1890 CODA_REG_BIT_STREAM_CTRL);
1891 break;
1892 default:
1893 coda_write(dev, CODA7_STREAM_BUF_PIC_FLUSH,
1894 CODA_REG_BIT_STREAM_CTRL);
1895 }
1896 if (dev->devtype->product == CODA_960)
1897 coda_write(dev, 1 << 12, CODA_REG_BIT_FRAME_MEM_CTRL);
1898 else
1899 coda_write(dev, 0, CODA_REG_BIT_FRAME_MEM_CTRL);
1900
1901 if (dev->devtype->product != CODA_DX6)
1902 coda_write(dev, 0, CODA7_REG_BIT_AXI_SRAM_USE);
1903
1904 coda_write(dev, CODA_INT_INTERRUPT_ENABLE,
1905 CODA_REG_BIT_INT_ENABLE);
1906
1907 /* Reset VPU and start processor */
1908 data = coda_read(dev, CODA_REG_BIT_CODE_RESET);
1909 data |= CODA_REG_RESET_ENABLE;
1910 coda_write(dev, data, CODA_REG_BIT_CODE_RESET);
1911 udelay(10);
1912 data &= ~CODA_REG_RESET_ENABLE;
1913 coda_write(dev, data, CODA_REG_BIT_CODE_RESET);
1914 coda_write(dev, CODA_REG_RUN_ENABLE, CODA_REG_BIT_CODE_RUN);
1915
1916 clk_disable_unprepare(dev->clk_ahb);
1917 clk_disable_unprepare(dev->clk_per);
1918
1919 return 0;
1920
1921 err_clk_ahb:
1922 clk_disable_unprepare(dev->clk_per);
1923 err_clk_per:
1924 return ret;
1925 }
1926
1927 static int coda_register_device(struct coda_dev *dev, int i)
1928 {
1929 struct video_device *vfd = &dev->vfd[i];
1930
1931 if (i >= dev->devtype->num_vdevs)
1932 return -EINVAL;
1933
1934 strlcpy(vfd->name, dev->devtype->vdevs[i]->name, sizeof(vfd->name));
1935 vfd->fops = &coda_fops;
1936 vfd->ioctl_ops = &coda_ioctl_ops;
1937 vfd->release = video_device_release_empty,
1938 vfd->lock = &dev->dev_mutex;
1939 vfd->v4l2_dev = &dev->v4l2_dev;
1940 vfd->vfl_dir = VFL_DIR_M2M;
1941 video_set_drvdata(vfd, dev);
1942
1943 /* Not applicable, use the selection API instead */
1944 v4l2_disable_ioctl(vfd, VIDIOC_CROPCAP);
1945 v4l2_disable_ioctl(vfd, VIDIOC_G_CROP);
1946 v4l2_disable_ioctl(vfd, VIDIOC_S_CROP);
1947
1948 return video_register_device(vfd, VFL_TYPE_GRABBER, 0);
1949 }
1950
1951 static void coda_copy_firmware(struct coda_dev *dev, const u8 * const buf,
1952 size_t size)
1953 {
1954 u32 *src = (u32 *)buf;
1955
1956 /* Check if the firmware has a 16-byte Freescale header, skip it */
1957 if (buf[0] == 'M' && buf[1] == 'X')
1958 src += 4;
1959 /*
1960 * Check whether the firmware is in native order or pre-reordered for
1961 * memory access. The first instruction opcode always is 0xe40e.
1962 */
1963 if (__le16_to_cpup((__le16 *)src) == 0xe40e) {
1964 u32 *dst = dev->codebuf.vaddr;
1965 int i;
1966
1967 /* Firmware in native order, reorder while copying */
1968 if (dev->devtype->product == CODA_DX6) {
1969 for (i = 0; i < (size - 16) / 4; i++)
1970 dst[i] = (src[i] << 16) | (src[i] >> 16);
1971 } else {
1972 for (i = 0; i < (size - 16) / 4; i += 2) {
1973 dst[i] = (src[i + 1] << 16) | (src[i + 1] >> 16);
1974 dst[i + 1] = (src[i] << 16) | (src[i] >> 16);
1975 }
1976 }
1977 } else {
1978 /* Copy the already reordered firmware image */
1979 memcpy(dev->codebuf.vaddr, src, size);
1980 }
1981 }
1982
1983 static void coda_fw_callback(const struct firmware *fw, void *context);
1984
1985 static int coda_firmware_request(struct coda_dev *dev)
1986 {
1987 char *fw = dev->devtype->firmware[dev->firmware];
1988
1989 dev_dbg(&dev->plat_dev->dev, "requesting firmware '%s' for %s\n", fw,
1990 coda_product_name(dev->devtype->product));
1991
1992 return request_firmware_nowait(THIS_MODULE, true, fw,
1993 &dev->plat_dev->dev, GFP_KERNEL, dev,
1994 coda_fw_callback);
1995 }
1996
1997 static void coda_fw_callback(const struct firmware *fw, void *context)
1998 {
1999 struct coda_dev *dev = context;
2000 struct platform_device *pdev = dev->plat_dev;
2001 int i, ret;
2002
2003 if (!fw && dev->firmware == 1) {
2004 v4l2_err(&dev->v4l2_dev, "firmware request failed\n");
2005 goto put_pm;
2006 }
2007 if (!fw) {
2008 dev->firmware = 1;
2009 coda_firmware_request(dev);
2010 return;
2011 }
2012 if (dev->firmware == 1) {
2013 /*
2014 * Since we can't suppress warnings for failed asynchronous
2015 * firmware requests, report that the fallback firmware was
2016 * found.
2017 */
2018 dev_info(&pdev->dev, "Using fallback firmware %s\n",
2019 dev->devtype->firmware[dev->firmware]);
2020 }
2021
2022 /* allocate auxiliary per-device code buffer for the BIT processor */
2023 ret = coda_alloc_aux_buf(dev, &dev->codebuf, fw->size, "codebuf",
2024 dev->debugfs_root);
2025 if (ret < 0)
2026 goto put_pm;
2027
2028 coda_copy_firmware(dev, fw->data, fw->size);
2029 release_firmware(fw);
2030
2031 ret = coda_hw_init(dev);
2032 if (ret < 0) {
2033 v4l2_err(&dev->v4l2_dev, "HW initialization failed\n");
2034 goto put_pm;
2035 }
2036
2037 ret = coda_check_firmware(dev);
2038 if (ret < 0)
2039 goto put_pm;
2040
2041 dev->m2m_dev = v4l2_m2m_init(&coda_m2m_ops);
2042 if (IS_ERR(dev->m2m_dev)) {
2043 v4l2_err(&dev->v4l2_dev, "Failed to init mem2mem device\n");
2044 goto put_pm;
2045 }
2046
2047 for (i = 0; i < dev->devtype->num_vdevs; i++) {
2048 ret = coda_register_device(dev, i);
2049 if (ret) {
2050 v4l2_err(&dev->v4l2_dev,
2051 "Failed to register %s video device: %d\n",
2052 dev->devtype->vdevs[i]->name, ret);
2053 goto rel_vfd;
2054 }
2055 }
2056
2057 v4l2_info(&dev->v4l2_dev, "codec registered as /dev/video[%d-%d]\n",
2058 dev->vfd[0].num, dev->vfd[i - 1].num);
2059
2060 pm_runtime_put_sync(&pdev->dev);
2061 return;
2062
2063 rel_vfd:
2064 while (--i >= 0)
2065 video_unregister_device(&dev->vfd[i]);
2066 v4l2_m2m_release(dev->m2m_dev);
2067 put_pm:
2068 pm_runtime_put_sync(&pdev->dev);
2069 }
2070
2071 enum coda_platform {
2072 CODA_IMX27,
2073 CODA_IMX53,
2074 CODA_IMX6Q,
2075 CODA_IMX6DL,
2076 };
2077
2078 static const struct coda_devtype coda_devdata[] = {
2079 [CODA_IMX27] = {
2080 .firmware = {
2081 "vpu_fw_imx27_TO2.bin",
2082 "v4l-codadx6-imx27.bin"
2083 },
2084 .product = CODA_DX6,
2085 .codecs = codadx6_codecs,
2086 .num_codecs = ARRAY_SIZE(codadx6_codecs),
2087 .vdevs = codadx6_video_devices,
2088 .num_vdevs = ARRAY_SIZE(codadx6_video_devices),
2089 .workbuf_size = 288 * 1024 + FMO_SLICE_SAVE_BUF_SIZE * 8 * 1024,
2090 .iram_size = 0xb000,
2091 },
2092 [CODA_IMX53] = {
2093 .firmware = {
2094 "vpu_fw_imx53.bin",
2095 "v4l-coda7541-imx53.bin"
2096 },
2097 .product = CODA_7541,
2098 .codecs = coda7_codecs,
2099 .num_codecs = ARRAY_SIZE(coda7_codecs),
2100 .vdevs = coda7_video_devices,
2101 .num_vdevs = ARRAY_SIZE(coda7_video_devices),
2102 .workbuf_size = 128 * 1024,
2103 .tempbuf_size = 304 * 1024,
2104 .iram_size = 0x14000,
2105 },
2106 [CODA_IMX6Q] = {
2107 .firmware = {
2108 "vpu_fw_imx6q.bin",
2109 "v4l-coda960-imx6q.bin"
2110 },
2111 .product = CODA_960,
2112 .codecs = coda9_codecs,
2113 .num_codecs = ARRAY_SIZE(coda9_codecs),
2114 .vdevs = coda9_video_devices,
2115 .num_vdevs = ARRAY_SIZE(coda9_video_devices),
2116 .workbuf_size = 80 * 1024,
2117 .tempbuf_size = 204 * 1024,
2118 .iram_size = 0x21000,
2119 },
2120 [CODA_IMX6DL] = {
2121 .firmware = {
2122 "vpu_fw_imx6d.bin",
2123 "v4l-coda960-imx6dl.bin"
2124 },
2125 .product = CODA_960,
2126 .codecs = coda9_codecs,
2127 .num_codecs = ARRAY_SIZE(coda9_codecs),
2128 .vdevs = coda9_video_devices,
2129 .num_vdevs = ARRAY_SIZE(coda9_video_devices),
2130 .workbuf_size = 80 * 1024,
2131 .tempbuf_size = 204 * 1024,
2132 .iram_size = 0x20000,
2133 },
2134 };
2135
2136 static struct platform_device_id coda_platform_ids[] = {
2137 { .name = "coda-imx27", .driver_data = CODA_IMX27 },
2138 { /* sentinel */ }
2139 };
2140 MODULE_DEVICE_TABLE(platform, coda_platform_ids);
2141
2142 #ifdef CONFIG_OF
2143 static const struct of_device_id coda_dt_ids[] = {
2144 { .compatible = "fsl,imx27-vpu", .data = &coda_devdata[CODA_IMX27] },
2145 { .compatible = "fsl,imx53-vpu", .data = &coda_devdata[CODA_IMX53] },
2146 { .compatible = "fsl,imx6q-vpu", .data = &coda_devdata[CODA_IMX6Q] },
2147 { .compatible = "fsl,imx6dl-vpu", .data = &coda_devdata[CODA_IMX6DL] },
2148 { /* sentinel */ }
2149 };
2150 MODULE_DEVICE_TABLE(of, coda_dt_ids);
2151 #endif
2152
2153 static int coda_probe(struct platform_device *pdev)
2154 {
2155 const struct of_device_id *of_id =
2156 of_match_device(of_match_ptr(coda_dt_ids), &pdev->dev);
2157 const struct platform_device_id *pdev_id;
2158 struct coda_platform_data *pdata = pdev->dev.platform_data;
2159 struct device_node *np = pdev->dev.of_node;
2160 struct gen_pool *pool;
2161 struct coda_dev *dev;
2162 struct resource *res;
2163 int ret, irq;
2164
2165 dev = devm_kzalloc(&pdev->dev, sizeof(*dev), GFP_KERNEL);
2166 if (!dev)
2167 return -ENOMEM;
2168
2169 pdev_id = of_id ? of_id->data : platform_get_device_id(pdev);
2170
2171 if (of_id)
2172 dev->devtype = of_id->data;
2173 else if (pdev_id)
2174 dev->devtype = &coda_devdata[pdev_id->driver_data];
2175 else
2176 return -EINVAL;
2177
2178 spin_lock_init(&dev->irqlock);
2179 INIT_LIST_HEAD(&dev->instances);
2180
2181 dev->plat_dev = pdev;
2182 dev->clk_per = devm_clk_get(&pdev->dev, "per");
2183 if (IS_ERR(dev->clk_per)) {
2184 dev_err(&pdev->dev, "Could not get per clock\n");
2185 return PTR_ERR(dev->clk_per);
2186 }
2187
2188 dev->clk_ahb = devm_clk_get(&pdev->dev, "ahb");
2189 if (IS_ERR(dev->clk_ahb)) {
2190 dev_err(&pdev->dev, "Could not get ahb clock\n");
2191 return PTR_ERR(dev->clk_ahb);
2192 }
2193
2194 /* Get memory for physical registers */
2195 res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
2196 dev->regs_base = devm_ioremap_resource(&pdev->dev, res);
2197 if (IS_ERR(dev->regs_base))
2198 return PTR_ERR(dev->regs_base);
2199
2200 /* IRQ */
2201 irq = platform_get_irq_byname(pdev, "bit");
2202 if (irq < 0)
2203 irq = platform_get_irq(pdev, 0);
2204 if (irq < 0) {
2205 dev_err(&pdev->dev, "failed to get irq resource\n");
2206 return irq;
2207 }
2208
2209 ret = devm_request_threaded_irq(&pdev->dev, irq, NULL, coda_irq_handler,
2210 IRQF_ONESHOT, dev_name(&pdev->dev), dev);
2211 if (ret < 0) {
2212 dev_err(&pdev->dev, "failed to request irq: %d\n", ret);
2213 return ret;
2214 }
2215
2216 dev->rstc = devm_reset_control_get_optional(&pdev->dev, NULL);
2217 if (IS_ERR(dev->rstc)) {
2218 ret = PTR_ERR(dev->rstc);
2219 if (ret == -ENOENT || ret == -ENOTSUPP) {
2220 dev->rstc = NULL;
2221 } else {
2222 dev_err(&pdev->dev, "failed get reset control: %d\n",
2223 ret);
2224 return ret;
2225 }
2226 }
2227
2228 /* Get IRAM pool from device tree or platform data */
2229 pool = of_gen_pool_get(np, "iram", 0);
2230 if (!pool && pdata)
2231 pool = gen_pool_get(pdata->iram_dev, NULL);
2232 if (!pool) {
2233 dev_err(&pdev->dev, "iram pool not available\n");
2234 return -ENOMEM;
2235 }
2236 dev->iram_pool = pool;
2237
2238 ret = v4l2_device_register(&pdev->dev, &dev->v4l2_dev);
2239 if (ret)
2240 return ret;
2241
2242 mutex_init(&dev->dev_mutex);
2243 mutex_init(&dev->coda_mutex);
2244
2245 dev->debugfs_root = debugfs_create_dir("coda", NULL);
2246 if (!dev->debugfs_root)
2247 dev_warn(&pdev->dev, "failed to create debugfs root\n");
2248
2249 /* allocate auxiliary per-device buffers for the BIT processor */
2250 if (dev->devtype->product == CODA_DX6) {
2251 ret = coda_alloc_aux_buf(dev, &dev->workbuf,
2252 dev->devtype->workbuf_size, "workbuf",
2253 dev->debugfs_root);
2254 if (ret < 0)
2255 goto err_v4l2_register;
2256 }
2257
2258 if (dev->devtype->tempbuf_size) {
2259 ret = coda_alloc_aux_buf(dev, &dev->tempbuf,
2260 dev->devtype->tempbuf_size, "tempbuf",
2261 dev->debugfs_root);
2262 if (ret < 0)
2263 goto err_v4l2_register;
2264 }
2265
2266 dev->iram.size = dev->devtype->iram_size;
2267 dev->iram.vaddr = gen_pool_dma_alloc(dev->iram_pool, dev->iram.size,
2268 &dev->iram.paddr);
2269 if (!dev->iram.vaddr) {
2270 dev_warn(&pdev->dev, "unable to alloc iram\n");
2271 } else {
2272 memset(dev->iram.vaddr, 0, dev->iram.size);
2273 dev->iram.blob.data = dev->iram.vaddr;
2274 dev->iram.blob.size = dev->iram.size;
2275 dev->iram.dentry = debugfs_create_blob("iram", 0644,
2276 dev->debugfs_root,
2277 &dev->iram.blob);
2278 }
2279
2280 dev->workqueue = alloc_workqueue("coda", WQ_UNBOUND | WQ_MEM_RECLAIM, 1);
2281 if (!dev->workqueue) {
2282 dev_err(&pdev->dev, "unable to alloc workqueue\n");
2283 ret = -ENOMEM;
2284 goto err_v4l2_register;
2285 }
2286
2287 platform_set_drvdata(pdev, dev);
2288
2289 /*
2290 * Start activated so we can directly call coda_hw_init in
2291 * coda_fw_callback regardless of whether CONFIG_PM is
2292 * enabled or whether the device is associated with a PM domain.
2293 */
2294 pm_runtime_get_noresume(&pdev->dev);
2295 pm_runtime_set_active(&pdev->dev);
2296 pm_runtime_enable(&pdev->dev);
2297
2298 ret = coda_firmware_request(dev);
2299 if (ret)
2300 goto err_alloc_workqueue;
2301 return 0;
2302
2303 err_alloc_workqueue:
2304 destroy_workqueue(dev->workqueue);
2305 err_v4l2_register:
2306 v4l2_device_unregister(&dev->v4l2_dev);
2307 return ret;
2308 }
2309
2310 static int coda_remove(struct platform_device *pdev)
2311 {
2312 struct coda_dev *dev = platform_get_drvdata(pdev);
2313 int i;
2314
2315 for (i = 0; i < ARRAY_SIZE(dev->vfd); i++) {
2316 if (video_get_drvdata(&dev->vfd[i]))
2317 video_unregister_device(&dev->vfd[i]);
2318 }
2319 if (dev->m2m_dev)
2320 v4l2_m2m_release(dev->m2m_dev);
2321 pm_runtime_disable(&pdev->dev);
2322 v4l2_device_unregister(&dev->v4l2_dev);
2323 destroy_workqueue(dev->workqueue);
2324 if (dev->iram.vaddr)
2325 gen_pool_free(dev->iram_pool, (unsigned long)dev->iram.vaddr,
2326 dev->iram.size);
2327 coda_free_aux_buf(dev, &dev->codebuf);
2328 coda_free_aux_buf(dev, &dev->tempbuf);
2329 coda_free_aux_buf(dev, &dev->workbuf);
2330 debugfs_remove_recursive(dev->debugfs_root);
2331 return 0;
2332 }
2333
2334 #ifdef CONFIG_PM
2335 static int coda_runtime_resume(struct device *dev)
2336 {
2337 struct coda_dev *cdev = dev_get_drvdata(dev);
2338 int ret = 0;
2339
2340 if (dev->pm_domain && cdev->codebuf.vaddr) {
2341 ret = coda_hw_init(cdev);
2342 if (ret)
2343 v4l2_err(&cdev->v4l2_dev, "HW initialization failed\n");
2344 }
2345
2346 return ret;
2347 }
2348 #endif
2349
2350 static const struct dev_pm_ops coda_pm_ops = {
2351 SET_RUNTIME_PM_OPS(NULL, coda_runtime_resume, NULL)
2352 };
2353
2354 static struct platform_driver coda_driver = {
2355 .probe = coda_probe,
2356 .remove = coda_remove,
2357 .driver = {
2358 .name = CODA_NAME,
2359 .of_match_table = of_match_ptr(coda_dt_ids),
2360 .pm = &coda_pm_ops,
2361 },
2362 .id_table = coda_platform_ids,
2363 };
2364
2365 module_platform_driver(coda_driver);
2366
2367 MODULE_LICENSE("GPL");
2368 MODULE_AUTHOR("Javier Martin <javier.martin@vista-silicon.com>");
2369 MODULE_DESCRIPTION("Coda multi-standard codec V4L2 driver");
Linux with added FPC-III support