1 /*
2 * Coda multi-standard codec IP
3 *
4 * Copyright (C) 2012 Vista Silicon S.L.
5 * Javier Martin, <javier.martin@vista-silicon.com>
6 * Xavier Duret
7 *
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License as published by
10 * the Free Software Foundation; either version 2 of the License, or
11 * (at your option) any later version.
12 */
13
14 #include <linux/clk.h>
15 #include <linux/debugfs.h>
16 #include <linux/delay.h>
17 #include <linux/firmware.h>
18 #include <linux/gcd.h>
19 #include <linux/genalloc.h>
20 #include <linux/interrupt.h>
21 #include <linux/io.h>
22 #include <linux/irq.h>
23 #include <linux/kfifo.h>
24 #include <linux/module.h>
25 #include <linux/of_device.h>
26 #include <linux/platform_device.h>
27 #include <linux/pm_runtime.h>
28 #include <linux/slab.h>
29 #include <linux/videodev2.h>
30 #include <linux/of.h>
31 #include <linux/platform_data/coda.h>
32 #include <linux/reset.h>
33
34 #include <media/v4l2-ctrls.h>
35 #include <media/v4l2-device.h>
36 #include <media/v4l2-event.h>
37 #include <media/v4l2-ioctl.h>
38 #include <media/v4l2-mem2mem.h>
39 #include <media/videobuf2-v4l2.h>
40 #include <media/videobuf2-dma-contig.h>
41 #include <media/videobuf2-vmalloc.h>
42
43 #include "coda.h"
44
45 #define CODA_NAME "coda"
46
47 #define CODADX6_MAX_INSTANCES 4
48 #define CODA_MAX_FORMATS 4
49
50 #define CODA_ISRAM_SIZE (2048 * 2)
51
52 #define MIN_W 176
53 #define MIN_H 144
54
55 #define S_ALIGN 1 /* multiple of 2 */
56 #define W_ALIGN 1 /* multiple of 2 */
57 #define H_ALIGN 1 /* multiple of 2 */
58
59 #define fh_to_ctx(__fh) container_of(__fh, struct coda_ctx, fh)
60
61 int coda_debug;
62 module_param(coda_debug, int, 0644);
63 MODULE_PARM_DESC(coda_debug, "Debug level (0-2)");
64
65 static int disable_tiling;
66 module_param(disable_tiling, int, 0644);
67 MODULE_PARM_DESC(disable_tiling, "Disable tiled frame buffers");
68
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_v4l2_buffer * buf,unsigned int reg_y)86 void coda_write_base(struct coda_ctx *ctx, struct coda_q_data *q_data,
87 struct vb2_v4l2_buffer *buf, unsigned int reg_y)
88 {
89 u32 base_y = vb2_dma_contig_plane_dma_addr(&buf->vb2_buf, 0);
90 u32 base_cb, base_cr;
91
92 switch (q_data->fourcc) {
93 case V4L2_PIX_FMT_NV12:
94 case V4L2_PIX_FMT_YUV420:
95 default:
96 base_cb = base_y + q_data->bytesperline * q_data->height;
97 base_cr = base_cb + q_data->bytesperline * q_data->height / 4;
98 break;
99 case V4L2_PIX_FMT_YVU420:
100 /* Switch Cb and Cr for YVU420 format */
101 base_cr = base_y + q_data->bytesperline * q_data->height;
102 base_cb = base_cr + q_data->bytesperline * q_data->height / 4;
103 break;
104 case V4L2_PIX_FMT_YUV422P:
105 base_cb = base_y + q_data->bytesperline * q_data->height;
106 base_cr = base_cb + q_data->bytesperline * q_data->height / 2;
107 }
108
109 coda_write(ctx->dev, base_y, reg_y);
110 coda_write(ctx->dev, base_cb, reg_y + 4);
111 coda_write(ctx->dev, base_cr, reg_y + 8);
112 }
113
114 #define CODA_CODEC(mode, src_fourcc, dst_fourcc, max_w, max_h) \
115 { mode, src_fourcc, dst_fourcc, max_w, max_h }
116
117 /*
118 * Arrays of codecs supported by each given version of Coda:
119 * i.MX27 -> codadx6
120 * i.MX5x -> coda7
121 * i.MX6 -> coda960
122 * Use V4L2_PIX_FMT_YUV420 as placeholder for all supported YUV 4:2:0 variants
123 */
124 static const struct coda_codec codadx6_codecs[] = {
125 CODA_CODEC(CODADX6_MODE_ENCODE_H264, V4L2_PIX_FMT_YUV420, V4L2_PIX_FMT_H264, 720, 576),
126 CODA_CODEC(CODADX6_MODE_ENCODE_MP4, V4L2_PIX_FMT_YUV420, V4L2_PIX_FMT_MPEG4, 720, 576),
127 };
128
129 static const struct coda_codec coda7_codecs[] = {
130 CODA_CODEC(CODA7_MODE_ENCODE_H264, V4L2_PIX_FMT_YUV420, V4L2_PIX_FMT_H264, 1280, 720),
131 CODA_CODEC(CODA7_MODE_ENCODE_MP4, V4L2_PIX_FMT_YUV420, V4L2_PIX_FMT_MPEG4, 1280, 720),
132 CODA_CODEC(CODA7_MODE_ENCODE_MJPG, V4L2_PIX_FMT_YUV420, V4L2_PIX_FMT_JPEG, 8192, 8192),
133 CODA_CODEC(CODA7_MODE_DECODE_H264, V4L2_PIX_FMT_H264, V4L2_PIX_FMT_YUV420, 1920, 1088),
134 CODA_CODEC(CODA7_MODE_DECODE_MP4, V4L2_PIX_FMT_MPEG4, V4L2_PIX_FMT_YUV420, 1920, 1088),
135 CODA_CODEC(CODA7_MODE_DECODE_MJPG, V4L2_PIX_FMT_JPEG, V4L2_PIX_FMT_YUV420, 8192, 8192),
136 };
137
138 static const struct coda_codec coda9_codecs[] = {
139 CODA_CODEC(CODA9_MODE_ENCODE_H264, V4L2_PIX_FMT_YUV420, V4L2_PIX_FMT_H264, 1920, 1088),
140 CODA_CODEC(CODA9_MODE_ENCODE_MP4, V4L2_PIX_FMT_YUV420, V4L2_PIX_FMT_MPEG4, 1920, 1088),
141 CODA_CODEC(CODA9_MODE_DECODE_H264, V4L2_PIX_FMT_H264, V4L2_PIX_FMT_YUV420, 1920, 1088),
142 CODA_CODEC(CODA9_MODE_DECODE_MP4, V4L2_PIX_FMT_MPEG4, V4L2_PIX_FMT_YUV420, 1920, 1088),
143 };
144
145 struct coda_video_device {
146 const char *name;
147 enum coda_inst_type type;
148 const struct coda_context_ops *ops;
149 bool direct;
150 u32 src_formats[CODA_MAX_FORMATS];
151 u32 dst_formats[CODA_MAX_FORMATS];
152 };
153
154 static const struct coda_video_device coda_bit_encoder = {
155 .name = "coda-encoder",
156 .type = CODA_INST_ENCODER,
157 .ops = &coda_bit_encode_ops,
158 .src_formats = {
159 V4L2_PIX_FMT_NV12,
160 V4L2_PIX_FMT_YUV420,
161 V4L2_PIX_FMT_YVU420,
162 },
163 .dst_formats = {
164 V4L2_PIX_FMT_H264,
165 V4L2_PIX_FMT_MPEG4,
166 },
167 };
168
169 static const struct coda_video_device coda_bit_jpeg_encoder = {
170 .name = "coda-jpeg-encoder",
171 .type = CODA_INST_ENCODER,
172 .ops = &coda_bit_encode_ops,
173 .src_formats = {
174 V4L2_PIX_FMT_NV12,
175 V4L2_PIX_FMT_YUV420,
176 V4L2_PIX_FMT_YVU420,
177 V4L2_PIX_FMT_YUV422P,
178 },
179 .dst_formats = {
180 V4L2_PIX_FMT_JPEG,
181 },
182 };
183
184 static const struct coda_video_device coda_bit_decoder = {
185 .name = "coda-decoder",
186 .type = CODA_INST_DECODER,
187 .ops = &coda_bit_decode_ops,
188 .src_formats = {
189 V4L2_PIX_FMT_H264,
190 V4L2_PIX_FMT_MPEG4,
191 },
192 .dst_formats = {
193 V4L2_PIX_FMT_NV12,
194 V4L2_PIX_FMT_YUV420,
195 V4L2_PIX_FMT_YVU420,
196 },
197 };
198
199 static const struct coda_video_device coda_bit_jpeg_decoder = {
200 .name = "coda-jpeg-decoder",
201 .type = CODA_INST_DECODER,
202 .ops = &coda_bit_decode_ops,
203 .src_formats = {
204 V4L2_PIX_FMT_JPEG,
205 },
206 .dst_formats = {
207 V4L2_PIX_FMT_NV12,
208 V4L2_PIX_FMT_YUV420,
209 V4L2_PIX_FMT_YVU420,
210 V4L2_PIX_FMT_YUV422P,
211 },
212 };
213
214 static const struct coda_video_device *codadx6_video_devices[] = {
215 &coda_bit_encoder,
216 };
217
218 static const struct coda_video_device *coda7_video_devices[] = {
219 &coda_bit_jpeg_encoder,
220 &coda_bit_jpeg_decoder,
221 &coda_bit_encoder,
222 &coda_bit_decoder,
223 };
224
225 static const struct coda_video_device *coda9_video_devices[] = {
226 &coda_bit_encoder,
227 &coda_bit_decoder,
228 };
229
230 /*
231 * Normalize all supported YUV 4:2:0 formats to the value used in the codec
232 * tables.
233 */
coda_format_normalize_yuv(u32 fourcc)234 static u32 coda_format_normalize_yuv(u32 fourcc)
235 {
236 switch (fourcc) {
237 case V4L2_PIX_FMT_NV12:
238 case V4L2_PIX_FMT_YUV420:
239 case V4L2_PIX_FMT_YVU420:
240 case V4L2_PIX_FMT_YUV422P:
241 return V4L2_PIX_FMT_YUV420;
242 default:
243 return fourcc;
244 }
245 }
246
coda_find_codec(struct coda_dev * dev,int src_fourcc,int dst_fourcc)247 static const struct coda_codec *coda_find_codec(struct coda_dev *dev,
248 int src_fourcc, int dst_fourcc)
249 {
250 const struct coda_codec *codecs = dev->devtype->codecs;
251 int num_codecs = dev->devtype->num_codecs;
252 int k;
253
254 src_fourcc = coda_format_normalize_yuv(src_fourcc);
255 dst_fourcc = coda_format_normalize_yuv(dst_fourcc);
256 if (src_fourcc == dst_fourcc)
257 return NULL;
258
259 for (k = 0; k < num_codecs; k++) {
260 if (codecs[k].src_fourcc == src_fourcc &&
261 codecs[k].dst_fourcc == dst_fourcc)
262 break;
263 }
264
265 if (k == num_codecs)
266 return NULL;
267
268 return &codecs[k];
269 }
270
coda_get_max_dimensions(struct coda_dev * dev,const struct coda_codec * codec,int * max_w,int * max_h)271 static void coda_get_max_dimensions(struct coda_dev *dev,
272 const struct coda_codec *codec,
273 int *max_w, int *max_h)
274 {
275 const struct coda_codec *codecs = dev->devtype->codecs;
276 int num_codecs = dev->devtype->num_codecs;
277 unsigned int w, h;
278 int k;
279
280 if (codec) {
281 w = codec->max_w;
282 h = codec->max_h;
283 } else {
284 for (k = 0, w = 0, h = 0; k < num_codecs; k++) {
285 w = max(w, codecs[k].max_w);
286 h = max(h, codecs[k].max_h);
287 }
288 }
289
290 if (max_w)
291 *max_w = w;
292 if (max_h)
293 *max_h = h;
294 }
295
to_coda_video_device(struct video_device * vdev)296 const struct coda_video_device *to_coda_video_device(struct video_device *vdev)
297 {
298 struct coda_dev *dev = video_get_drvdata(vdev);
299 unsigned int i = vdev - dev->vfd;
300
301 if (i >= dev->devtype->num_vdevs)
302 return NULL;
303
304 return dev->devtype->vdevs[i];
305 }
306
coda_product_name(int product)307 const char *coda_product_name(int product)
308 {
309 static char buf[9];
310
311 switch (product) {
312 case CODA_DX6:
313 return "CodaDx6";
314 case CODA_7541:
315 return "CODA7541";
316 case CODA_960:
317 return "CODA960";
318 default:
319 snprintf(buf, sizeof(buf), "(0x%04x)", product);
320 return buf;
321 }
322 }
323
324 /*
325 * V4L2 ioctl() operations.
326 */
coda_querycap(struct file * file,void * priv,struct v4l2_capability * cap)327 static int coda_querycap(struct file *file, void *priv,
328 struct v4l2_capability *cap)
329 {
330 struct coda_ctx *ctx = fh_to_ctx(priv);
331
332 strlcpy(cap->driver, CODA_NAME, sizeof(cap->driver));
333 strlcpy(cap->card, coda_product_name(ctx->dev->devtype->product),
334 sizeof(cap->card));
335 strlcpy(cap->bus_info, "platform:" CODA_NAME, sizeof(cap->bus_info));
336 cap->device_caps = V4L2_CAP_VIDEO_M2M | V4L2_CAP_STREAMING;
337 cap->capabilities = cap->device_caps | V4L2_CAP_DEVICE_CAPS;
338
339 return 0;
340 }
341
coda_enum_fmt(struct file * file,void * priv,struct v4l2_fmtdesc * f)342 static int coda_enum_fmt(struct file *file, void *priv,
343 struct v4l2_fmtdesc *f)
344 {
345 struct video_device *vdev = video_devdata(file);
346 const struct coda_video_device *cvd = to_coda_video_device(vdev);
347 const u32 *formats;
348
349 if (f->type == V4L2_BUF_TYPE_VIDEO_OUTPUT)
350 formats = cvd->src_formats;
351 else if (f->type == V4L2_BUF_TYPE_VIDEO_CAPTURE)
352 formats = cvd->dst_formats;
353 else
354 return -EINVAL;
355
356 if (f->index >= CODA_MAX_FORMATS || formats[f->index] == 0)
357 return -EINVAL;
358
359 f->pixelformat = formats[f->index];
360
361 return 0;
362 }
363
coda_g_fmt(struct file * file,void * priv,struct v4l2_format * f)364 static int coda_g_fmt(struct file *file, void *priv,
365 struct v4l2_format *f)
366 {
367 struct coda_q_data *q_data;
368 struct coda_ctx *ctx = fh_to_ctx(priv);
369
370 q_data = get_q_data(ctx, f->type);
371 if (!q_data)
372 return -EINVAL;
373
374 f->fmt.pix.field = V4L2_FIELD_NONE;
375 f->fmt.pix.pixelformat = q_data->fourcc;
376 f->fmt.pix.width = q_data->width;
377 f->fmt.pix.height = q_data->height;
378 f->fmt.pix.bytesperline = q_data->bytesperline;
379
380 f->fmt.pix.sizeimage = q_data->sizeimage;
381 if (f->fmt.pix.pixelformat == V4L2_PIX_FMT_JPEG)
382 f->fmt.pix.colorspace = V4L2_COLORSPACE_JPEG;
383 else
384 f->fmt.pix.colorspace = ctx->colorspace;
385
386 return 0;
387 }
388
coda_try_pixelformat(struct coda_ctx * ctx,struct v4l2_format * f)389 static int coda_try_pixelformat(struct coda_ctx *ctx, struct v4l2_format *f)
390 {
391 struct coda_q_data *q_data;
392 const u32 *formats;
393 int i;
394
395 if (f->type == V4L2_BUF_TYPE_VIDEO_OUTPUT)
396 formats = ctx->cvd->src_formats;
397 else if (f->type == V4L2_BUF_TYPE_VIDEO_CAPTURE)
398 formats = ctx->cvd->dst_formats;
399 else
400 return -EINVAL;
401
402 for (i = 0; i < CODA_MAX_FORMATS; i++) {
403 if (formats[i] == f->fmt.pix.pixelformat) {
404 f->fmt.pix.pixelformat = formats[i];
405 return 0;
406 }
407 }
408
409 /* Fall back to currently set pixelformat */
410 q_data = get_q_data(ctx, f->type);
411 f->fmt.pix.pixelformat = q_data->fourcc;
412
413 return 0;
414 }
415
coda_estimate_sizeimage(struct coda_ctx * ctx,u32 sizeimage,u32 width,u32 height)416 static unsigned int coda_estimate_sizeimage(struct coda_ctx *ctx, u32 sizeimage,
417 u32 width, u32 height)
418 {
419 /*
420 * This is a rough estimate for sensible compressed buffer
421 * sizes (between 1 and 16 bits per pixel). This could be
422 * improved by better format specific worst case estimates.
423 */
424 return round_up(clamp(sizeimage, width * height / 8,
425 width * height * 2), PAGE_SIZE);
426 }
427
coda_try_fmt(struct coda_ctx * ctx,const struct coda_codec * codec,struct v4l2_format * f)428 static int coda_try_fmt(struct coda_ctx *ctx, const struct coda_codec *codec,
429 struct v4l2_format *f)
430 {
431 struct coda_dev *dev = ctx->dev;
432 unsigned int max_w, max_h;
433 enum v4l2_field field;
434
435 field = f->fmt.pix.field;
436 if (field == V4L2_FIELD_ANY)
437 field = V4L2_FIELD_NONE;
438 else if (V4L2_FIELD_NONE != field)
439 return -EINVAL;
440
441 /* V4L2 specification suggests the driver corrects the format struct
442 * if any of the dimensions is unsupported */
443 f->fmt.pix.field = field;
444
445 coda_get_max_dimensions(dev, codec, &max_w, &max_h);
446 v4l_bound_align_image(&f->fmt.pix.width, MIN_W, max_w, W_ALIGN,
447 &f->fmt.pix.height, MIN_H, max_h, H_ALIGN,
448 S_ALIGN);
449
450 switch (f->fmt.pix.pixelformat) {
451 case V4L2_PIX_FMT_NV12:
452 case V4L2_PIX_FMT_YUV420:
453 case V4L2_PIX_FMT_YVU420:
454 /*
455 * Frame stride must be at least multiple of 8,
456 * but multiple of 16 for h.264 or JPEG 4:2:x
457 */
458 f->fmt.pix.bytesperline = round_up(f->fmt.pix.width, 16);
459 f->fmt.pix.sizeimage = f->fmt.pix.bytesperline *
460 f->fmt.pix.height * 3 / 2;
461 break;
462 case V4L2_PIX_FMT_YUV422P:
463 f->fmt.pix.bytesperline = round_up(f->fmt.pix.width, 16);
464 f->fmt.pix.sizeimage = f->fmt.pix.bytesperline *
465 f->fmt.pix.height * 2;
466 break;
467 case V4L2_PIX_FMT_JPEG:
468 f->fmt.pix.colorspace = V4L2_COLORSPACE_JPEG;
469 /* fallthrough */
470 case V4L2_PIX_FMT_H264:
471 case V4L2_PIX_FMT_MPEG4:
472 f->fmt.pix.bytesperline = 0;
473 f->fmt.pix.sizeimage = coda_estimate_sizeimage(ctx,
474 f->fmt.pix.sizeimage,
475 f->fmt.pix.width,
476 f->fmt.pix.height);
477 break;
478 default:
479 BUG();
480 }
481
482 return 0;
483 }
484
coda_try_fmt_vid_cap(struct file * file,void * priv,struct v4l2_format * f)485 static int coda_try_fmt_vid_cap(struct file *file, void *priv,
486 struct v4l2_format *f)
487 {
488 struct coda_ctx *ctx = fh_to_ctx(priv);
489 const struct coda_q_data *q_data_src;
490 const struct coda_codec *codec;
491 struct vb2_queue *src_vq;
492 int ret;
493
494 ret = coda_try_pixelformat(ctx, f);
495 if (ret < 0)
496 return ret;
497
498 q_data_src = get_q_data(ctx, V4L2_BUF_TYPE_VIDEO_OUTPUT);
499
500 /*
501 * If the source format is already fixed, only allow the same output
502 * resolution
503 */
504 src_vq = v4l2_m2m_get_vq(ctx->fh.m2m_ctx, V4L2_BUF_TYPE_VIDEO_OUTPUT);
505 if (vb2_is_streaming(src_vq)) {
506 f->fmt.pix.width = q_data_src->width;
507 f->fmt.pix.height = q_data_src->height;
508 }
509
510 f->fmt.pix.colorspace = ctx->colorspace;
511
512 q_data_src = get_q_data(ctx, V4L2_BUF_TYPE_VIDEO_OUTPUT);
513 codec = coda_find_codec(ctx->dev, q_data_src->fourcc,
514 f->fmt.pix.pixelformat);
515 if (!codec)
516 return -EINVAL;
517
518 ret = coda_try_fmt(ctx, codec, f);
519 if (ret < 0)
520 return ret;
521
522 /* The h.264 decoder only returns complete 16x16 macroblocks */
523 if (codec && codec->src_fourcc == V4L2_PIX_FMT_H264) {
524 f->fmt.pix.width = f->fmt.pix.width;
525 f->fmt.pix.height = round_up(f->fmt.pix.height, 16);
526 f->fmt.pix.bytesperline = round_up(f->fmt.pix.width, 16);
527 f->fmt.pix.sizeimage = f->fmt.pix.bytesperline *
528 f->fmt.pix.height * 3 / 2;
529 }
530
531 return 0;
532 }
533
coda_try_fmt_vid_out(struct file * file,void * priv,struct v4l2_format * f)534 static int coda_try_fmt_vid_out(struct file *file, void *priv,
535 struct v4l2_format *f)
536 {
537 struct coda_ctx *ctx = fh_to_ctx(priv);
538 struct coda_dev *dev = ctx->dev;
539 const struct coda_q_data *q_data_dst;
540 const struct coda_codec *codec;
541 int ret;
542
543 ret = coda_try_pixelformat(ctx, f);
544 if (ret < 0)
545 return ret;
546
547 switch (f->fmt.pix.colorspace) {
548 case V4L2_COLORSPACE_REC709:
549 case V4L2_COLORSPACE_JPEG:
550 break;
551 default:
552 if (f->fmt.pix.pixelformat == V4L2_PIX_FMT_JPEG)
553 f->fmt.pix.colorspace = V4L2_COLORSPACE_JPEG;
554 else
555 f->fmt.pix.colorspace = V4L2_COLORSPACE_REC709;
556 }
557
558 q_data_dst = get_q_data(ctx, V4L2_BUF_TYPE_VIDEO_CAPTURE);
559 codec = coda_find_codec(dev, f->fmt.pix.pixelformat, q_data_dst->fourcc);
560
561 return coda_try_fmt(ctx, codec, f);
562 }
563
coda_s_fmt(struct coda_ctx * ctx,struct v4l2_format * f)564 static int coda_s_fmt(struct coda_ctx *ctx, struct v4l2_format *f)
565 {
566 struct coda_q_data *q_data;
567 struct vb2_queue *vq;
568
569 vq = v4l2_m2m_get_vq(ctx->fh.m2m_ctx, f->type);
570 if (!vq)
571 return -EINVAL;
572
573 q_data = get_q_data(ctx, f->type);
574 if (!q_data)
575 return -EINVAL;
576
577 if (vb2_is_busy(vq)) {
578 v4l2_err(&ctx->dev->v4l2_dev, "%s queue busy\n", __func__);
579 return -EBUSY;
580 }
581
582 q_data->fourcc = f->fmt.pix.pixelformat;
583 q_data->width = f->fmt.pix.width;
584 q_data->height = f->fmt.pix.height;
585 q_data->bytesperline = f->fmt.pix.bytesperline;
586 q_data->sizeimage = f->fmt.pix.sizeimage;
587 q_data->rect.left = 0;
588 q_data->rect.top = 0;
589 q_data->rect.width = f->fmt.pix.width;
590 q_data->rect.height = f->fmt.pix.height;
591
592 switch (f->fmt.pix.pixelformat) {
593 case V4L2_PIX_FMT_NV12:
594 if (f->type == V4L2_BUF_TYPE_VIDEO_OUTPUT) {
595 ctx->tiled_map_type = GDI_TILED_FRAME_MB_RASTER_MAP;
596 if (!disable_tiling)
597 break;
598 }
599 /* else fall through */
600 case V4L2_PIX_FMT_YUV420:
601 case V4L2_PIX_FMT_YVU420:
602 ctx->tiled_map_type = GDI_LINEAR_FRAME_MAP;
603 break;
604 default:
605 break;
606 }
607
608 v4l2_dbg(1, coda_debug, &ctx->dev->v4l2_dev,
609 "Setting format for type %d, wxh: %dx%d, fmt: %d\n",
610 f->type, q_data->width, q_data->height, q_data->fourcc);
611
612 return 0;
613 }
614
coda_s_fmt_vid_cap(struct file * file,void * priv,struct v4l2_format * f)615 static int coda_s_fmt_vid_cap(struct file *file, void *priv,
616 struct v4l2_format *f)
617 {
618 struct coda_ctx *ctx = fh_to_ctx(priv);
619 int ret;
620
621 ret = coda_try_fmt_vid_cap(file, priv, f);
622 if (ret)
623 return ret;
624
625 return coda_s_fmt(ctx, f);
626 }
627
coda_s_fmt_vid_out(struct file * file,void * priv,struct v4l2_format * f)628 static int coda_s_fmt_vid_out(struct file *file, void *priv,
629 struct v4l2_format *f)
630 {
631 struct coda_ctx *ctx = fh_to_ctx(priv);
632 struct v4l2_format f_cap;
633 int ret;
634
635 ret = coda_try_fmt_vid_out(file, priv, f);
636 if (ret)
637 return ret;
638
639 ret = coda_s_fmt(ctx, f);
640 if (ret)
641 return ret;
642
643 ctx->colorspace = f->fmt.pix.colorspace;
644
645 memset(&f_cap, 0, sizeof(f_cap));
646 f_cap.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
647 coda_g_fmt(file, priv, &f_cap);
648 f_cap.fmt.pix.width = f->fmt.pix.width;
649 f_cap.fmt.pix.height = f->fmt.pix.height;
650
651 ret = coda_try_fmt_vid_cap(file, priv, &f_cap);
652 if (ret)
653 return ret;
654
655 return coda_s_fmt(ctx, &f_cap);
656 }
657
coda_reqbufs(struct file * file,void * priv,struct v4l2_requestbuffers * rb)658 static int coda_reqbufs(struct file *file, void *priv,
659 struct v4l2_requestbuffers *rb)
660 {
661 struct coda_ctx *ctx = fh_to_ctx(priv);
662 int ret;
663
664 ret = v4l2_m2m_reqbufs(file, ctx->fh.m2m_ctx, rb);
665 if (ret)
666 return ret;
667
668 /*
669 * Allow to allocate instance specific per-context buffers, such as
670 * bitstream ringbuffer, slice buffer, work buffer, etc. if needed.
671 */
672 if (rb->type == V4L2_BUF_TYPE_VIDEO_OUTPUT && ctx->ops->reqbufs)
673 return ctx->ops->reqbufs(ctx, rb);
674
675 return 0;
676 }
677
coda_qbuf(struct file * file,void * priv,struct v4l2_buffer * buf)678 static int coda_qbuf(struct file *file, void *priv,
679 struct v4l2_buffer *buf)
680 {
681 struct coda_ctx *ctx = fh_to_ctx(priv);
682
683 return v4l2_m2m_qbuf(file, ctx->fh.m2m_ctx, buf);
684 }
685
coda_buf_is_end_of_stream(struct coda_ctx * ctx,struct vb2_v4l2_buffer * buf)686 static bool coda_buf_is_end_of_stream(struct coda_ctx *ctx,
687 struct vb2_v4l2_buffer *buf)
688 {
689 struct vb2_queue *src_vq;
690
691 src_vq = v4l2_m2m_get_vq(ctx->fh.m2m_ctx, V4L2_BUF_TYPE_VIDEO_OUTPUT);
692
693 return ((ctx->bit_stream_param & CODA_BIT_STREAM_END_FLAG) &&
694 (buf->sequence == (ctx->qsequence - 1)));
695 }
696
coda_m2m_buf_done(struct coda_ctx * ctx,struct vb2_v4l2_buffer * buf,enum vb2_buffer_state state)697 void coda_m2m_buf_done(struct coda_ctx *ctx, struct vb2_v4l2_buffer *buf,
698 enum vb2_buffer_state state)
699 {
700 const struct v4l2_event eos_event = {
701 .type = V4L2_EVENT_EOS
702 };
703
704 if (coda_buf_is_end_of_stream(ctx, buf)) {
705 buf->flags |= V4L2_BUF_FLAG_LAST;
706
707 v4l2_event_queue_fh(&ctx->fh, &eos_event);
708 }
709
710 v4l2_m2m_buf_done(buf, state);
711 }
712
coda_g_selection(struct file * file,void * fh,struct v4l2_selection * s)713 static int coda_g_selection(struct file *file, void *fh,
714 struct v4l2_selection *s)
715 {
716 struct coda_ctx *ctx = fh_to_ctx(fh);
717 struct coda_q_data *q_data;
718 struct v4l2_rect r, *rsel;
719
720 q_data = get_q_data(ctx, s->type);
721 if (!q_data)
722 return -EINVAL;
723
724 r.left = 0;
725 r.top = 0;
726 r.width = q_data->width;
727 r.height = q_data->height;
728 rsel = &q_data->rect;
729
730 switch (s->target) {
731 case V4L2_SEL_TGT_CROP_DEFAULT:
732 case V4L2_SEL_TGT_CROP_BOUNDS:
733 rsel = &r;
734 /* fallthrough */
735 case V4L2_SEL_TGT_CROP:
736 if (s->type != V4L2_BUF_TYPE_VIDEO_OUTPUT)
737 return -EINVAL;
738 break;
739 case V4L2_SEL_TGT_COMPOSE_BOUNDS:
740 case V4L2_SEL_TGT_COMPOSE_PADDED:
741 rsel = &r;
742 /* fallthrough */
743 case V4L2_SEL_TGT_COMPOSE:
744 case V4L2_SEL_TGT_COMPOSE_DEFAULT:
745 if (s->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
746 return -EINVAL;
747 break;
748 default:
749 return -EINVAL;
750 }
751
752 s->r = *rsel;
753
754 return 0;
755 }
756
coda_try_decoder_cmd(struct file * file,void * fh,struct v4l2_decoder_cmd * dc)757 static int coda_try_decoder_cmd(struct file *file, void *fh,
758 struct v4l2_decoder_cmd *dc)
759 {
760 if (dc->cmd != V4L2_DEC_CMD_STOP)
761 return -EINVAL;
762
763 if (dc->flags & V4L2_DEC_CMD_STOP_TO_BLACK)
764 return -EINVAL;
765
766 if (!(dc->flags & V4L2_DEC_CMD_STOP_IMMEDIATELY) && (dc->stop.pts != 0))
767 return -EINVAL;
768
769 return 0;
770 }
771
coda_decoder_cmd(struct file * file,void * fh,struct v4l2_decoder_cmd * dc)772 static int coda_decoder_cmd(struct file *file, void *fh,
773 struct v4l2_decoder_cmd *dc)
774 {
775 struct coda_ctx *ctx = fh_to_ctx(fh);
776 int ret;
777
778 ret = coda_try_decoder_cmd(file, fh, dc);
779 if (ret < 0)
780 return ret;
781
782 /* Ignore decoder stop command silently in encoder context */
783 if (ctx->inst_type != CODA_INST_DECODER)
784 return 0;
785
786 /* Set the stream-end flag on this context */
787 coda_bit_stream_end_flag(ctx);
788 ctx->hold = false;
789 v4l2_m2m_try_schedule(ctx->fh.m2m_ctx);
790
791 return 0;
792 }
793
coda_g_parm(struct file * file,void * fh,struct v4l2_streamparm * a)794 static int coda_g_parm(struct file *file, void *fh, struct v4l2_streamparm *a)
795 {
796 struct coda_ctx *ctx = fh_to_ctx(fh);
797 struct v4l2_fract *tpf;
798
799 if (a->type != V4L2_BUF_TYPE_VIDEO_OUTPUT)
800 return -EINVAL;
801
802 a->parm.output.capability = V4L2_CAP_TIMEPERFRAME;
803 tpf = &a->parm.output.timeperframe;
804 tpf->denominator = ctx->params.framerate & CODA_FRATE_RES_MASK;
805 tpf->numerator = 1 + (ctx->params.framerate >>
806 CODA_FRATE_DIV_OFFSET);
807
808 return 0;
809 }
810
811 /*
812 * Approximate timeperframe v4l2_fract with values that can be written
813 * into the 16-bit CODA_FRATE_DIV and CODA_FRATE_RES fields.
814 */
coda_approximate_timeperframe(struct v4l2_fract * timeperframe)815 static void coda_approximate_timeperframe(struct v4l2_fract *timeperframe)
816 {
817 struct v4l2_fract s = *timeperframe;
818 struct v4l2_fract f0;
819 struct v4l2_fract f1 = { 1, 0 };
820 struct v4l2_fract f2 = { 0, 1 };
821 unsigned int i, div, s_denominator;
822
823 /* Lower bound is 1/65535 */
824 if (s.numerator == 0 || s.denominator / s.numerator > 65535) {
825 timeperframe->numerator = 1;
826 timeperframe->denominator = 65535;
827 return;
828 }
829
830 /* Upper bound is 65536/1, map everything above to infinity */
831 if (s.denominator == 0 || s.numerator / s.denominator > 65536) {
832 timeperframe->numerator = 1;
833 timeperframe->denominator = 0;
834 return;
835 }
836
837 /* Reduce fraction to lowest terms */
838 div = gcd(s.numerator, s.denominator);
839 if (div > 1) {
840 s.numerator /= div;
841 s.denominator /= div;
842 }
843
844 if (s.numerator <= 65536 && s.denominator < 65536) {
845 *timeperframe = s;
846 return;
847 }
848
849 /* Find successive convergents from continued fraction expansion */
850 while (f2.numerator <= 65536 && f2.denominator < 65536) {
851 f0 = f1;
852 f1 = f2;
853
854 /* Stop when f2 exactly equals timeperframe */
855 if (s.numerator == 0)
856 break;
857
858 i = s.denominator / s.numerator;
859
860 f2.numerator = f0.numerator + i * f1.numerator;
861 f2.denominator = f0.denominator + i * f2.denominator;
862
863 s_denominator = s.numerator;
864 s.numerator = s.denominator % s.numerator;
865 s.denominator = s_denominator;
866 }
867
868 *timeperframe = f1;
869 }
870
coda_timeperframe_to_frate(struct v4l2_fract * timeperframe)871 static uint32_t coda_timeperframe_to_frate(struct v4l2_fract *timeperframe)
872 {
873 return ((timeperframe->numerator - 1) << CODA_FRATE_DIV_OFFSET) |
874 timeperframe->denominator;
875 }
876
coda_s_parm(struct file * file,void * fh,struct v4l2_streamparm * a)877 static int coda_s_parm(struct file *file, void *fh, struct v4l2_streamparm *a)
878 {
879 struct coda_ctx *ctx = fh_to_ctx(fh);
880 struct v4l2_fract *tpf;
881
882 if (a->type != V4L2_BUF_TYPE_VIDEO_OUTPUT)
883 return -EINVAL;
884
885 tpf = &a->parm.output.timeperframe;
886 coda_approximate_timeperframe(tpf);
887 ctx->params.framerate = coda_timeperframe_to_frate(tpf);
888
889 return 0;
890 }
891
coda_subscribe_event(struct v4l2_fh * fh,const struct v4l2_event_subscription * sub)892 static int coda_subscribe_event(struct v4l2_fh *fh,
893 const struct v4l2_event_subscription *sub)
894 {
895 switch (sub->type) {
896 case V4L2_EVENT_EOS:
897 return v4l2_event_subscribe(fh, sub, 0, NULL);
898 default:
899 return v4l2_ctrl_subscribe_event(fh, sub);
900 }
901 }
902
903 static const struct v4l2_ioctl_ops coda_ioctl_ops = {
904 .vidioc_querycap = coda_querycap,
905
906 .vidioc_enum_fmt_vid_cap = coda_enum_fmt,
907 .vidioc_g_fmt_vid_cap = coda_g_fmt,
908 .vidioc_try_fmt_vid_cap = coda_try_fmt_vid_cap,
909 .vidioc_s_fmt_vid_cap = coda_s_fmt_vid_cap,
910
911 .vidioc_enum_fmt_vid_out = coda_enum_fmt,
912 .vidioc_g_fmt_vid_out = coda_g_fmt,
913 .vidioc_try_fmt_vid_out = coda_try_fmt_vid_out,
914 .vidioc_s_fmt_vid_out = coda_s_fmt_vid_out,
915
916 .vidioc_reqbufs = coda_reqbufs,
917 .vidioc_querybuf = v4l2_m2m_ioctl_querybuf,
918
919 .vidioc_qbuf = coda_qbuf,
920 .vidioc_expbuf = v4l2_m2m_ioctl_expbuf,
921 .vidioc_dqbuf = v4l2_m2m_ioctl_dqbuf,
922 .vidioc_create_bufs = v4l2_m2m_ioctl_create_bufs,
923
924 .vidioc_streamon = v4l2_m2m_ioctl_streamon,
925 .vidioc_streamoff = v4l2_m2m_ioctl_streamoff,
926
927 .vidioc_g_selection = coda_g_selection,
928
929 .vidioc_try_decoder_cmd = coda_try_decoder_cmd,
930 .vidioc_decoder_cmd = coda_decoder_cmd,
931
932 .vidioc_g_parm = coda_g_parm,
933 .vidioc_s_parm = coda_s_parm,
934
935 .vidioc_subscribe_event = coda_subscribe_event,
936 .vidioc_unsubscribe_event = v4l2_event_unsubscribe,
937 };
938
939 /*
940 * Mem-to-mem operations.
941 */
942
coda_device_run(void * m2m_priv)943 static void coda_device_run(void *m2m_priv)
944 {
945 struct coda_ctx *ctx = m2m_priv;
946 struct coda_dev *dev = ctx->dev;
947
948 queue_work(dev->workqueue, &ctx->pic_run_work);
949 }
950
coda_pic_run_work(struct work_struct * work)951 static void coda_pic_run_work(struct work_struct *work)
952 {
953 struct coda_ctx *ctx = container_of(work, struct coda_ctx, pic_run_work);
954 struct coda_dev *dev = ctx->dev;
955 int ret;
956
957 mutex_lock(&ctx->buffer_mutex);
958 mutex_lock(&dev->coda_mutex);
959
960 ret = ctx->ops->prepare_run(ctx);
961 if (ret < 0 && ctx->inst_type == CODA_INST_DECODER) {
962 mutex_unlock(&dev->coda_mutex);
963 mutex_unlock(&ctx->buffer_mutex);
964 /* job_finish scheduled by prepare_decode */
965 return;
966 }
967
968 if (!wait_for_completion_timeout(&ctx->completion,
969 msecs_to_jiffies(1000))) {
970 dev_err(&dev->plat_dev->dev, "CODA PIC_RUN timeout\n");
971
972 ctx->hold = true;
973
974 coda_hw_reset(ctx);
975 } else if (!ctx->aborting) {
976 ctx->ops->finish_run(ctx);
977 }
978
979 if ((ctx->aborting || (!ctx->streamon_cap && !ctx->streamon_out)) &&
980 ctx->ops->seq_end_work)
981 queue_work(dev->workqueue, &ctx->seq_end_work);
982
983 mutex_unlock(&dev->coda_mutex);
984 mutex_unlock(&ctx->buffer_mutex);
985
986 v4l2_m2m_job_finish(ctx->dev->m2m_dev, ctx->fh.m2m_ctx);
987 }
988
coda_job_ready(void * m2m_priv)989 static int coda_job_ready(void *m2m_priv)
990 {
991 struct coda_ctx *ctx = m2m_priv;
992 int src_bufs = v4l2_m2m_num_src_bufs_ready(ctx->fh.m2m_ctx);
993
994 /*
995 * For both 'P' and 'key' frame cases 1 picture
996 * and 1 frame are needed. In the decoder case,
997 * the compressed frame can be in the bitstream.
998 */
999 if (!src_bufs && ctx->inst_type != CODA_INST_DECODER) {
1000 v4l2_dbg(1, coda_debug, &ctx->dev->v4l2_dev,
1001 "not ready: not enough video buffers.\n");
1002 return 0;
1003 }
1004
1005 if (!v4l2_m2m_num_dst_bufs_ready(ctx->fh.m2m_ctx)) {
1006 v4l2_dbg(1, coda_debug, &ctx->dev->v4l2_dev,
1007 "not ready: not enough video capture buffers.\n");
1008 return 0;
1009 }
1010
1011 if (ctx->inst_type == CODA_INST_DECODER && ctx->use_bit) {
1012 bool stream_end = ctx->bit_stream_param &
1013 CODA_BIT_STREAM_END_FLAG;
1014 int num_metas = ctx->num_metas;
1015
1016 if (ctx->hold && !src_bufs) {
1017 v4l2_dbg(1, coda_debug, &ctx->dev->v4l2_dev,
1018 "%d: not ready: on hold for more buffers.\n",
1019 ctx->idx);
1020 return 0;
1021 }
1022
1023 if (!stream_end && (num_metas + src_bufs) < 2) {
1024 v4l2_dbg(1, coda_debug, &ctx->dev->v4l2_dev,
1025 "%d: not ready: need 2 buffers available (%d, %d)\n",
1026 ctx->idx, num_metas, src_bufs);
1027 return 0;
1028 }
1029
1030
1031 if (!src_bufs && !stream_end &&
1032 (coda_get_bitstream_payload(ctx) < 512)) {
1033 v4l2_dbg(1, coda_debug, &ctx->dev->v4l2_dev,
1034 "%d: not ready: not enough bitstream data (%d).\n",
1035 ctx->idx, coda_get_bitstream_payload(ctx));
1036 return 0;
1037 }
1038 }
1039
1040 if (ctx->aborting) {
1041 v4l2_dbg(1, coda_debug, &ctx->dev->v4l2_dev,
1042 "not ready: aborting\n");
1043 return 0;
1044 }
1045
1046 v4l2_dbg(1, coda_debug, &ctx->dev->v4l2_dev,
1047 "job ready\n");
1048
1049 return 1;
1050 }
1051
coda_job_abort(void * priv)1052 static void coda_job_abort(void *priv)
1053 {
1054 struct coda_ctx *ctx = priv;
1055
1056 ctx->aborting = 1;
1057
1058 v4l2_dbg(1, coda_debug, &ctx->dev->v4l2_dev,
1059 "Aborting task\n");
1060 }
1061
coda_lock(void * m2m_priv)1062 static void coda_lock(void *m2m_priv)
1063 {
1064 struct coda_ctx *ctx = m2m_priv;
1065 struct coda_dev *pcdev = ctx->dev;
1066
1067 mutex_lock(&pcdev->dev_mutex);
1068 }
1069
coda_unlock(void * m2m_priv)1070 static void coda_unlock(void *m2m_priv)
1071 {
1072 struct coda_ctx *ctx = m2m_priv;
1073 struct coda_dev *pcdev = ctx->dev;
1074
1075 mutex_unlock(&pcdev->dev_mutex);
1076 }
1077
1078 static const struct v4l2_m2m_ops coda_m2m_ops = {
1079 .device_run = coda_device_run,
1080 .job_ready = coda_job_ready,
1081 .job_abort = coda_job_abort,
1082 .lock = coda_lock,
1083 .unlock = coda_unlock,
1084 };
1085
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->cvd->src_formats[0];
1103 ctx->q_data[V4L2_M2M_DST].fourcc = ctx->cvd->dst_formats[0];
1104 ctx->q_data[V4L2_M2M_SRC].width = max_w;
1105 ctx->q_data[V4L2_M2M_SRC].height = max_h;
1106 ctx->q_data[V4L2_M2M_DST].width = max_w;
1107 ctx->q_data[V4L2_M2M_DST].height = max_h;
1108 if (ctx->codec->src_fourcc == V4L2_PIX_FMT_YUV420) {
1109 ctx->q_data[V4L2_M2M_SRC].bytesperline = max_w;
1110 ctx->q_data[V4L2_M2M_SRC].sizeimage = usize;
1111 ctx->q_data[V4L2_M2M_DST].bytesperline = 0;
1112 ctx->q_data[V4L2_M2M_DST].sizeimage = csize;
1113 } else {
1114 ctx->q_data[V4L2_M2M_SRC].bytesperline = 0;
1115 ctx->q_data[V4L2_M2M_SRC].sizeimage = csize;
1116 ctx->q_data[V4L2_M2M_DST].bytesperline = max_w;
1117 ctx->q_data[V4L2_M2M_DST].sizeimage = usize;
1118 }
1119 ctx->q_data[V4L2_M2M_SRC].rect.width = max_w;
1120 ctx->q_data[V4L2_M2M_SRC].rect.height = max_h;
1121 ctx->q_data[V4L2_M2M_DST].rect.width = max_w;
1122 ctx->q_data[V4L2_M2M_DST].rect.height = max_h;
1123
1124 /*
1125 * Since the RBC2AXI logic only supports a single chroma plane,
1126 * macroblock tiling only works for to NV12 pixel format.
1127 */
1128 ctx->tiled_map_type = GDI_LINEAR_FRAME_MAP;
1129 }
1130
1131 /*
1132 * Queue operations
1133 */
coda_queue_setup(struct vb2_queue * vq,const void * parg,unsigned int * nbuffers,unsigned int * nplanes,unsigned int sizes[],void * alloc_ctxs[])1134 static int coda_queue_setup(struct vb2_queue *vq, const void *parg,
1135 unsigned int *nbuffers, unsigned int *nplanes,
1136 unsigned int sizes[], void *alloc_ctxs[])
1137 {
1138 struct coda_ctx *ctx = vb2_get_drv_priv(vq);
1139 struct coda_q_data *q_data;
1140 unsigned int size;
1141
1142 q_data = get_q_data(ctx, vq->type);
1143 size = q_data->sizeimage;
1144
1145 *nplanes = 1;
1146 sizes[0] = size;
1147
1148 /* Set to vb2-dma-contig allocator context, ignored by vb2-vmalloc */
1149 alloc_ctxs[0] = ctx->dev->alloc_ctx;
1150
1151 v4l2_dbg(1, coda_debug, &ctx->dev->v4l2_dev,
1152 "get %d buffer(s) of size %d each.\n", *nbuffers, size);
1153
1154 return 0;
1155 }
1156
coda_buf_prepare(struct vb2_buffer * vb)1157 static int coda_buf_prepare(struct vb2_buffer *vb)
1158 {
1159 struct coda_ctx *ctx = vb2_get_drv_priv(vb->vb2_queue);
1160 struct coda_q_data *q_data;
1161
1162 q_data = get_q_data(ctx, vb->vb2_queue->type);
1163
1164 if (vb2_plane_size(vb, 0) < q_data->sizeimage) {
1165 v4l2_warn(&ctx->dev->v4l2_dev,
1166 "%s data will not fit into plane (%lu < %lu)\n",
1167 __func__, vb2_plane_size(vb, 0),
1168 (long)q_data->sizeimage);
1169 return -EINVAL;
1170 }
1171
1172 return 0;
1173 }
1174
coda_buf_queue(struct vb2_buffer * vb)1175 static void coda_buf_queue(struct vb2_buffer *vb)
1176 {
1177 struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
1178 struct coda_ctx *ctx = vb2_get_drv_priv(vb->vb2_queue);
1179 struct vb2_queue *vq = vb->vb2_queue;
1180 struct coda_q_data *q_data;
1181
1182 q_data = get_q_data(ctx, vb->vb2_queue->type);
1183
1184 /*
1185 * In the decoder case, immediately try to copy the buffer into the
1186 * bitstream ringbuffer and mark it as ready to be dequeued.
1187 */
1188 if (ctx->bitstream.size && vq->type == V4L2_BUF_TYPE_VIDEO_OUTPUT) {
1189 /*
1190 * For backwards compatibility, queuing an empty buffer marks
1191 * the stream end
1192 */
1193 if (vb2_get_plane_payload(vb, 0) == 0)
1194 coda_bit_stream_end_flag(ctx);
1195 mutex_lock(&ctx->bitstream_mutex);
1196 v4l2_m2m_buf_queue(ctx->fh.m2m_ctx, vbuf);
1197 if (vb2_is_streaming(vb->vb2_queue))
1198 coda_fill_bitstream(ctx, true);
1199 mutex_unlock(&ctx->bitstream_mutex);
1200 } else {
1201 v4l2_m2m_buf_queue(ctx->fh.m2m_ctx, vbuf);
1202 }
1203 }
1204
coda_alloc_aux_buf(struct coda_dev * dev,struct coda_aux_buf * buf,size_t size,const char * name,struct dentry * parent)1205 int coda_alloc_aux_buf(struct coda_dev *dev, struct coda_aux_buf *buf,
1206 size_t size, const char *name, struct dentry *parent)
1207 {
1208 buf->vaddr = dma_alloc_coherent(&dev->plat_dev->dev, size, &buf->paddr,
1209 GFP_KERNEL);
1210 if (!buf->vaddr) {
1211 v4l2_err(&dev->v4l2_dev,
1212 "Failed to allocate %s buffer of size %u\n",
1213 name, size);
1214 return -ENOMEM;
1215 }
1216
1217 buf->size = size;
1218
1219 if (name && parent) {
1220 buf->blob.data = buf->vaddr;
1221 buf->blob.size = size;
1222 buf->dentry = debugfs_create_blob(name, 0644, parent,
1223 &buf->blob);
1224 if (!buf->dentry)
1225 dev_warn(&dev->plat_dev->dev,
1226 "failed to create debugfs entry %s\n", name);
1227 }
1228
1229 return 0;
1230 }
1231
coda_free_aux_buf(struct coda_dev * dev,struct coda_aux_buf * buf)1232 void coda_free_aux_buf(struct coda_dev *dev,
1233 struct coda_aux_buf *buf)
1234 {
1235 if (buf->vaddr) {
1236 dma_free_coherent(&dev->plat_dev->dev, buf->size,
1237 buf->vaddr, buf->paddr);
1238 buf->vaddr = NULL;
1239 buf->size = 0;
1240 debugfs_remove(buf->dentry);
1241 buf->dentry = NULL;
1242 }
1243 }
1244
coda_start_streaming(struct vb2_queue * q,unsigned int count)1245 static int coda_start_streaming(struct vb2_queue *q, unsigned int count)
1246 {
1247 struct coda_ctx *ctx = vb2_get_drv_priv(q);
1248 struct v4l2_device *v4l2_dev = &ctx->dev->v4l2_dev;
1249 struct coda_q_data *q_data_src, *q_data_dst;
1250 struct vb2_v4l2_buffer *buf;
1251 int ret = 0;
1252
1253 q_data_src = get_q_data(ctx, V4L2_BUF_TYPE_VIDEO_OUTPUT);
1254 if (q->type == V4L2_BUF_TYPE_VIDEO_OUTPUT) {
1255 if (ctx->inst_type == CODA_INST_DECODER && ctx->use_bit) {
1256 /* copy the buffers that were queued before streamon */
1257 mutex_lock(&ctx->bitstream_mutex);
1258 coda_fill_bitstream(ctx, false);
1259 mutex_unlock(&ctx->bitstream_mutex);
1260
1261 if (coda_get_bitstream_payload(ctx) < 512) {
1262 ret = -EINVAL;
1263 goto err;
1264 }
1265 } else {
1266 if (count < 1) {
1267 ret = -EINVAL;
1268 goto err;
1269 }
1270 }
1271
1272 ctx->streamon_out = 1;
1273 } else {
1274 if (count < 1) {
1275 ret = -EINVAL;
1276 goto err;
1277 }
1278
1279 ctx->streamon_cap = 1;
1280 }
1281
1282 /* Don't start the coda unless both queues are on */
1283 if (!(ctx->streamon_out & ctx->streamon_cap))
1284 return 0;
1285
1286 q_data_dst = get_q_data(ctx, V4L2_BUF_TYPE_VIDEO_CAPTURE);
1287 if ((q_data_src->width != q_data_dst->width &&
1288 round_up(q_data_src->width, 16) != q_data_dst->width) ||
1289 (q_data_src->height != q_data_dst->height &&
1290 round_up(q_data_src->height, 16) != q_data_dst->height)) {
1291 v4l2_err(v4l2_dev, "can't convert %dx%d to %dx%d\n",
1292 q_data_src->width, q_data_src->height,
1293 q_data_dst->width, q_data_dst->height);
1294 ret = -EINVAL;
1295 goto err;
1296 }
1297
1298 /* Allow BIT decoder device_run with no new buffers queued */
1299 if (ctx->inst_type == CODA_INST_DECODER && ctx->use_bit)
1300 v4l2_m2m_set_src_buffered(ctx->fh.m2m_ctx, true);
1301
1302 ctx->gopcounter = ctx->params.gop_size - 1;
1303
1304 ctx->codec = coda_find_codec(ctx->dev, q_data_src->fourcc,
1305 q_data_dst->fourcc);
1306 if (!ctx->codec) {
1307 v4l2_err(v4l2_dev, "couldn't tell instance type.\n");
1308 ret = -EINVAL;
1309 goto err;
1310 }
1311
1312 if (q_data_dst->fourcc == V4L2_PIX_FMT_JPEG)
1313 ctx->params.gop_size = 1;
1314 ctx->gopcounter = ctx->params.gop_size - 1;
1315
1316 ret = ctx->ops->start_streaming(ctx);
1317 if (ctx->inst_type == CODA_INST_DECODER) {
1318 if (ret == -EAGAIN)
1319 return 0;
1320 else if (ret < 0)
1321 goto err;
1322 }
1323
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_v4l2_buffer *buf;
1342 unsigned long flags;
1343 bool stop;
1344
1345 stop = ctx->streamon_out && ctx->streamon_cap;
1346
1347 if (q->type == V4L2_BUF_TYPE_VIDEO_OUTPUT) {
1348 v4l2_dbg(1, coda_debug, &dev->v4l2_dev,
1349 "%s: output\n", __func__);
1350 ctx->streamon_out = 0;
1351
1352 coda_bit_stream_end_flag(ctx);
1353
1354 ctx->qsequence = 0;
1355
1356 while ((buf = v4l2_m2m_src_buf_remove(ctx->fh.m2m_ctx)))
1357 v4l2_m2m_buf_done(buf, VB2_BUF_STATE_ERROR);
1358 } else {
1359 v4l2_dbg(1, coda_debug, &dev->v4l2_dev,
1360 "%s: capture\n", __func__);
1361 ctx->streamon_cap = 0;
1362
1363 ctx->osequence = 0;
1364 ctx->sequence_offset = 0;
1365
1366 while ((buf = v4l2_m2m_dst_buf_remove(ctx->fh.m2m_ctx)))
1367 v4l2_m2m_buf_done(buf, VB2_BUF_STATE_ERROR);
1368 }
1369
1370 if (stop) {
1371 struct coda_buffer_meta *meta;
1372
1373 if (ctx->ops->seq_end_work) {
1374 queue_work(dev->workqueue, &ctx->seq_end_work);
1375 flush_work(&ctx->seq_end_work);
1376 }
1377 spin_lock_irqsave(&ctx->buffer_meta_lock, flags);
1378 while (!list_empty(&ctx->buffer_meta_list)) {
1379 meta = list_first_entry(&ctx->buffer_meta_list,
1380 struct coda_buffer_meta, list);
1381 list_del(&meta->list);
1382 kfree(meta);
1383 }
1384 ctx->num_metas = 0;
1385 spin_unlock_irqrestore(&ctx->buffer_meta_lock, flags);
1386 kfifo_init(&ctx->bitstream_fifo,
1387 ctx->bitstream.vaddr, ctx->bitstream.size);
1388 ctx->runcounter = 0;
1389 ctx->aborting = 0;
1390 }
1391
1392 if (!ctx->streamon_out && !ctx->streamon_cap)
1393 ctx->bit_stream_param &= ~CODA_BIT_STREAM_END_FLAG;
1394 }
1395
1396 static const struct vb2_ops coda_qops = {
1397 .queue_setup = coda_queue_setup,
1398 .buf_prepare = coda_buf_prepare,
1399 .buf_queue = coda_buf_queue,
1400 .start_streaming = coda_start_streaming,
1401 .stop_streaming = coda_stop_streaming,
1402 .wait_prepare = vb2_ops_wait_prepare,
1403 .wait_finish = vb2_ops_wait_finish,
1404 };
1405
coda_s_ctrl(struct v4l2_ctrl * ctrl)1406 static int coda_s_ctrl(struct v4l2_ctrl *ctrl)
1407 {
1408 struct coda_ctx *ctx =
1409 container_of(ctrl->handler, struct coda_ctx, ctrls);
1410
1411 v4l2_dbg(1, coda_debug, &ctx->dev->v4l2_dev,
1412 "s_ctrl: id = %d, val = %d\n", ctrl->id, ctrl->val);
1413
1414 switch (ctrl->id) {
1415 case V4L2_CID_HFLIP:
1416 if (ctrl->val)
1417 ctx->params.rot_mode |= CODA_MIR_HOR;
1418 else
1419 ctx->params.rot_mode &= ~CODA_MIR_HOR;
1420 break;
1421 case V4L2_CID_VFLIP:
1422 if (ctrl->val)
1423 ctx->params.rot_mode |= CODA_MIR_VER;
1424 else
1425 ctx->params.rot_mode &= ~CODA_MIR_VER;
1426 break;
1427 case V4L2_CID_MPEG_VIDEO_BITRATE:
1428 ctx->params.bitrate = ctrl->val / 1000;
1429 break;
1430 case V4L2_CID_MPEG_VIDEO_GOP_SIZE:
1431 ctx->params.gop_size = ctrl->val;
1432 break;
1433 case V4L2_CID_MPEG_VIDEO_H264_I_FRAME_QP:
1434 ctx->params.h264_intra_qp = ctrl->val;
1435 break;
1436 case V4L2_CID_MPEG_VIDEO_H264_P_FRAME_QP:
1437 ctx->params.h264_inter_qp = ctrl->val;
1438 break;
1439 case V4L2_CID_MPEG_VIDEO_H264_MIN_QP:
1440 ctx->params.h264_min_qp = ctrl->val;
1441 break;
1442 case V4L2_CID_MPEG_VIDEO_H264_MAX_QP:
1443 ctx->params.h264_max_qp = ctrl->val;
1444 break;
1445 case V4L2_CID_MPEG_VIDEO_H264_LOOP_FILTER_ALPHA:
1446 ctx->params.h264_deblk_alpha = ctrl->val;
1447 break;
1448 case V4L2_CID_MPEG_VIDEO_H264_LOOP_FILTER_BETA:
1449 ctx->params.h264_deblk_beta = ctrl->val;
1450 break;
1451 case V4L2_CID_MPEG_VIDEO_H264_LOOP_FILTER_MODE:
1452 ctx->params.h264_deblk_enabled = (ctrl->val ==
1453 V4L2_MPEG_VIDEO_H264_LOOP_FILTER_MODE_ENABLED);
1454 break;
1455 case V4L2_CID_MPEG_VIDEO_MPEG4_I_FRAME_QP:
1456 ctx->params.mpeg4_intra_qp = ctrl->val;
1457 break;
1458 case V4L2_CID_MPEG_VIDEO_MPEG4_P_FRAME_QP:
1459 ctx->params.mpeg4_inter_qp = ctrl->val;
1460 break;
1461 case V4L2_CID_MPEG_VIDEO_MULTI_SLICE_MODE:
1462 ctx->params.slice_mode = ctrl->val;
1463 break;
1464 case V4L2_CID_MPEG_VIDEO_MULTI_SLICE_MAX_MB:
1465 ctx->params.slice_max_mb = ctrl->val;
1466 break;
1467 case V4L2_CID_MPEG_VIDEO_MULTI_SLICE_MAX_BYTES:
1468 ctx->params.slice_max_bits = ctrl->val * 8;
1469 break;
1470 case V4L2_CID_MPEG_VIDEO_HEADER_MODE:
1471 break;
1472 case V4L2_CID_MPEG_VIDEO_CYCLIC_INTRA_REFRESH_MB:
1473 ctx->params.intra_refresh = ctrl->val;
1474 break;
1475 case V4L2_CID_JPEG_COMPRESSION_QUALITY:
1476 coda_set_jpeg_compression_quality(ctx, ctrl->val);
1477 break;
1478 case V4L2_CID_JPEG_RESTART_INTERVAL:
1479 ctx->params.jpeg_restart_interval = ctrl->val;
1480 break;
1481 case V4L2_CID_MPEG_VIDEO_VBV_DELAY:
1482 ctx->params.vbv_delay = ctrl->val;
1483 break;
1484 case V4L2_CID_MPEG_VIDEO_VBV_SIZE:
1485 ctx->params.vbv_size = min(ctrl->val * 8192, 0x7fffffff);
1486 break;
1487 default:
1488 v4l2_dbg(1, coda_debug, &ctx->dev->v4l2_dev,
1489 "Invalid control, id=%d, val=%d\n",
1490 ctrl->id, ctrl->val);
1491 return -EINVAL;
1492 }
1493
1494 return 0;
1495 }
1496
1497 static const struct v4l2_ctrl_ops coda_ctrl_ops = {
1498 .s_ctrl = coda_s_ctrl,
1499 };
1500
coda_encode_ctrls(struct coda_ctx * ctx)1501 static void coda_encode_ctrls(struct coda_ctx *ctx)
1502 {
1503 v4l2_ctrl_new_std(&ctx->ctrls, &coda_ctrl_ops,
1504 V4L2_CID_MPEG_VIDEO_BITRATE, 0, 32767000, 1000, 0);
1505 v4l2_ctrl_new_std(&ctx->ctrls, &coda_ctrl_ops,
1506 V4L2_CID_MPEG_VIDEO_GOP_SIZE, 1, 60, 1, 16);
1507 v4l2_ctrl_new_std(&ctx->ctrls, &coda_ctrl_ops,
1508 V4L2_CID_MPEG_VIDEO_H264_I_FRAME_QP, 0, 51, 1, 25);
1509 v4l2_ctrl_new_std(&ctx->ctrls, &coda_ctrl_ops,
1510 V4L2_CID_MPEG_VIDEO_H264_P_FRAME_QP, 0, 51, 1, 25);
1511 if (ctx->dev->devtype->product != CODA_960) {
1512 v4l2_ctrl_new_std(&ctx->ctrls, &coda_ctrl_ops,
1513 V4L2_CID_MPEG_VIDEO_H264_MIN_QP, 0, 51, 1, 12);
1514 }
1515 v4l2_ctrl_new_std(&ctx->ctrls, &coda_ctrl_ops,
1516 V4L2_CID_MPEG_VIDEO_H264_MAX_QP, 0, 51, 1, 51);
1517 v4l2_ctrl_new_std(&ctx->ctrls, &coda_ctrl_ops,
1518 V4L2_CID_MPEG_VIDEO_H264_LOOP_FILTER_ALPHA, 0, 15, 1, 0);
1519 v4l2_ctrl_new_std(&ctx->ctrls, &coda_ctrl_ops,
1520 V4L2_CID_MPEG_VIDEO_H264_LOOP_FILTER_BETA, 0, 15, 1, 0);
1521 v4l2_ctrl_new_std_menu(&ctx->ctrls, &coda_ctrl_ops,
1522 V4L2_CID_MPEG_VIDEO_H264_LOOP_FILTER_MODE,
1523 V4L2_MPEG_VIDEO_H264_LOOP_FILTER_MODE_DISABLED, 0x0,
1524 V4L2_MPEG_VIDEO_H264_LOOP_FILTER_MODE_ENABLED);
1525 v4l2_ctrl_new_std(&ctx->ctrls, &coda_ctrl_ops,
1526 V4L2_CID_MPEG_VIDEO_MPEG4_I_FRAME_QP, 1, 31, 1, 2);
1527 v4l2_ctrl_new_std(&ctx->ctrls, &coda_ctrl_ops,
1528 V4L2_CID_MPEG_VIDEO_MPEG4_P_FRAME_QP, 1, 31, 1, 2);
1529 v4l2_ctrl_new_std_menu(&ctx->ctrls, &coda_ctrl_ops,
1530 V4L2_CID_MPEG_VIDEO_MULTI_SLICE_MODE,
1531 V4L2_MPEG_VIDEO_MULTI_SICE_MODE_MAX_BYTES, 0x0,
1532 V4L2_MPEG_VIDEO_MULTI_SLICE_MODE_SINGLE);
1533 v4l2_ctrl_new_std(&ctx->ctrls, &coda_ctrl_ops,
1534 V4L2_CID_MPEG_VIDEO_MULTI_SLICE_MAX_MB, 1, 0x3fffffff, 1, 1);
1535 v4l2_ctrl_new_std(&ctx->ctrls, &coda_ctrl_ops,
1536 V4L2_CID_MPEG_VIDEO_MULTI_SLICE_MAX_BYTES, 1, 0x3fffffff, 1,
1537 500);
1538 v4l2_ctrl_new_std_menu(&ctx->ctrls, &coda_ctrl_ops,
1539 V4L2_CID_MPEG_VIDEO_HEADER_MODE,
1540 V4L2_MPEG_VIDEO_HEADER_MODE_JOINED_WITH_1ST_FRAME,
1541 (1 << V4L2_MPEG_VIDEO_HEADER_MODE_SEPARATE),
1542 V4L2_MPEG_VIDEO_HEADER_MODE_JOINED_WITH_1ST_FRAME);
1543 v4l2_ctrl_new_std(&ctx->ctrls, &coda_ctrl_ops,
1544 V4L2_CID_MPEG_VIDEO_CYCLIC_INTRA_REFRESH_MB, 0,
1545 1920 * 1088 / 256, 1, 0);
1546 v4l2_ctrl_new_std(&ctx->ctrls, &coda_ctrl_ops,
1547 V4L2_CID_MPEG_VIDEO_VBV_DELAY, 0, 0x7fff, 1, 0);
1548 /*
1549 * The maximum VBV size value is 0x7fffffff bits,
1550 * one bit less than 262144 KiB
1551 */
1552 v4l2_ctrl_new_std(&ctx->ctrls, &coda_ctrl_ops,
1553 V4L2_CID_MPEG_VIDEO_VBV_SIZE, 0, 262144, 1, 0);
1554 }
1555
coda_jpeg_encode_ctrls(struct coda_ctx * ctx)1556 static void coda_jpeg_encode_ctrls(struct coda_ctx *ctx)
1557 {
1558 v4l2_ctrl_new_std(&ctx->ctrls, &coda_ctrl_ops,
1559 V4L2_CID_JPEG_COMPRESSION_QUALITY, 5, 100, 1, 50);
1560 v4l2_ctrl_new_std(&ctx->ctrls, &coda_ctrl_ops,
1561 V4L2_CID_JPEG_RESTART_INTERVAL, 0, 100, 1, 0);
1562 }
1563
coda_ctrls_setup(struct coda_ctx * ctx)1564 static int coda_ctrls_setup(struct coda_ctx *ctx)
1565 {
1566 v4l2_ctrl_handler_init(&ctx->ctrls, 2);
1567
1568 v4l2_ctrl_new_std(&ctx->ctrls, &coda_ctrl_ops,
1569 V4L2_CID_HFLIP, 0, 1, 1, 0);
1570 v4l2_ctrl_new_std(&ctx->ctrls, &coda_ctrl_ops,
1571 V4L2_CID_VFLIP, 0, 1, 1, 0);
1572 if (ctx->inst_type == CODA_INST_ENCODER) {
1573 if (ctx->cvd->dst_formats[0] == V4L2_PIX_FMT_JPEG)
1574 coda_jpeg_encode_ctrls(ctx);
1575 else
1576 coda_encode_ctrls(ctx);
1577 }
1578
1579 if (ctx->ctrls.error) {
1580 v4l2_err(&ctx->dev->v4l2_dev,
1581 "control initialization error (%d)",
1582 ctx->ctrls.error);
1583 return -EINVAL;
1584 }
1585
1586 return v4l2_ctrl_handler_setup(&ctx->ctrls);
1587 }
1588
coda_queue_init(struct coda_ctx * ctx,struct vb2_queue * vq)1589 static int coda_queue_init(struct coda_ctx *ctx, struct vb2_queue *vq)
1590 {
1591 vq->drv_priv = ctx;
1592 vq->ops = &coda_qops;
1593 vq->buf_struct_size = sizeof(struct v4l2_m2m_buffer);
1594 vq->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_COPY;
1595 vq->lock = &ctx->dev->dev_mutex;
1596 /* One way to indicate end-of-stream for coda is to set the
1597 * bytesused == 0. However by default videobuf2 handles bytesused
1598 * equal to 0 as a special case and changes its value to the size
1599 * of the buffer. Set the allow_zero_bytesused flag, so
1600 * that videobuf2 will keep the value of bytesused intact.
1601 */
1602 vq->allow_zero_bytesused = 1;
1603
1604 return vb2_queue_init(vq);
1605 }
1606
coda_encoder_queue_init(void * priv,struct vb2_queue * src_vq,struct vb2_queue * dst_vq)1607 int coda_encoder_queue_init(void *priv, struct vb2_queue *src_vq,
1608 struct vb2_queue *dst_vq)
1609 {
1610 int ret;
1611
1612 src_vq->type = V4L2_BUF_TYPE_VIDEO_OUTPUT;
1613 src_vq->io_modes = VB2_DMABUF | VB2_MMAP;
1614 src_vq->mem_ops = &vb2_dma_contig_memops;
1615
1616 ret = coda_queue_init(priv, src_vq);
1617 if (ret)
1618 return ret;
1619
1620 dst_vq->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
1621 dst_vq->io_modes = VB2_DMABUF | VB2_MMAP;
1622 dst_vq->mem_ops = &vb2_dma_contig_memops;
1623
1624 return coda_queue_init(priv, dst_vq);
1625 }
1626
coda_decoder_queue_init(void * priv,struct vb2_queue * src_vq,struct vb2_queue * dst_vq)1627 int coda_decoder_queue_init(void *priv, struct vb2_queue *src_vq,
1628 struct vb2_queue *dst_vq)
1629 {
1630 int ret;
1631
1632 src_vq->type = V4L2_BUF_TYPE_VIDEO_OUTPUT;
1633 src_vq->io_modes = VB2_DMABUF | VB2_MMAP | VB2_USERPTR;
1634 src_vq->mem_ops = &vb2_vmalloc_memops;
1635
1636 ret = coda_queue_init(priv, src_vq);
1637 if (ret)
1638 return ret;
1639
1640 dst_vq->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
1641 dst_vq->io_modes = VB2_DMABUF | VB2_MMAP;
1642 dst_vq->mem_ops = &vb2_dma_contig_memops;
1643
1644 return coda_queue_init(priv, dst_vq);
1645 }
1646
coda_next_free_instance(struct coda_dev * dev)1647 static int coda_next_free_instance(struct coda_dev *dev)
1648 {
1649 int idx = ffz(dev->instance_mask);
1650
1651 if ((idx < 0) ||
1652 (dev->devtype->product == CODA_DX6 && idx > CODADX6_MAX_INSTANCES))
1653 return -EBUSY;
1654
1655 return idx;
1656 }
1657
1658 /*
1659 * File operations
1660 */
1661
coda_open(struct file * file)1662 static int coda_open(struct file *file)
1663 {
1664 struct video_device *vdev = video_devdata(file);
1665 struct coda_dev *dev = video_get_drvdata(vdev);
1666 struct coda_ctx *ctx = NULL;
1667 char *name;
1668 int ret;
1669 int idx;
1670
1671 ctx = kzalloc(sizeof(*ctx), GFP_KERNEL);
1672 if (!ctx)
1673 return -ENOMEM;
1674
1675 idx = coda_next_free_instance(dev);
1676 if (idx < 0) {
1677 ret = idx;
1678 goto err_coda_max;
1679 }
1680 set_bit(idx, &dev->instance_mask);
1681
1682 name = kasprintf(GFP_KERNEL, "context%d", idx);
1683 if (!name) {
1684 ret = -ENOMEM;
1685 goto err_coda_name_init;
1686 }
1687
1688 ctx->debugfs_entry = debugfs_create_dir(name, dev->debugfs_root);
1689 kfree(name);
1690
1691 ctx->cvd = to_coda_video_device(vdev);
1692 ctx->inst_type = ctx->cvd->type;
1693 ctx->ops = ctx->cvd->ops;
1694 ctx->use_bit = !ctx->cvd->direct;
1695 init_completion(&ctx->completion);
1696 INIT_WORK(&ctx->pic_run_work, coda_pic_run_work);
1697 if (ctx->ops->seq_end_work)
1698 INIT_WORK(&ctx->seq_end_work, ctx->ops->seq_end_work);
1699 v4l2_fh_init(&ctx->fh, video_devdata(file));
1700 file->private_data = &ctx->fh;
1701 v4l2_fh_add(&ctx->fh);
1702 ctx->dev = dev;
1703 ctx->idx = idx;
1704 switch (dev->devtype->product) {
1705 case CODA_960:
1706 ctx->frame_mem_ctrl = 1 << 12;
1707 /* fallthrough */
1708 case CODA_7541:
1709 ctx->reg_idx = 0;
1710 break;
1711 default:
1712 ctx->reg_idx = idx;
1713 }
1714
1715 /* Power up and upload firmware if necessary */
1716 ret = pm_runtime_get_sync(&dev->plat_dev->dev);
1717 if (ret < 0) {
1718 v4l2_err(&dev->v4l2_dev, "failed to power up: %d\n", ret);
1719 goto err_pm_get;
1720 }
1721
1722 ret = clk_prepare_enable(dev->clk_per);
1723 if (ret)
1724 goto err_clk_per;
1725
1726 ret = clk_prepare_enable(dev->clk_ahb);
1727 if (ret)
1728 goto err_clk_ahb;
1729
1730 set_default_params(ctx);
1731 ctx->fh.m2m_ctx = v4l2_m2m_ctx_init(dev->m2m_dev, ctx,
1732 ctx->ops->queue_init);
1733 if (IS_ERR(ctx->fh.m2m_ctx)) {
1734 ret = PTR_ERR(ctx->fh.m2m_ctx);
1735
1736 v4l2_err(&dev->v4l2_dev, "%s return error (%d)\n",
1737 __func__, ret);
1738 goto err_ctx_init;
1739 }
1740
1741 ret = coda_ctrls_setup(ctx);
1742 if (ret) {
1743 v4l2_err(&dev->v4l2_dev, "failed to setup coda controls\n");
1744 goto err_ctrls_setup;
1745 }
1746
1747 ctx->fh.ctrl_handler = &ctx->ctrls;
1748
1749 mutex_init(&ctx->bitstream_mutex);
1750 mutex_init(&ctx->buffer_mutex);
1751 INIT_LIST_HEAD(&ctx->buffer_meta_list);
1752 spin_lock_init(&ctx->buffer_meta_lock);
1753
1754 coda_lock(ctx);
1755 list_add(&ctx->list, &dev->instances);
1756 coda_unlock(ctx);
1757
1758 v4l2_dbg(1, coda_debug, &dev->v4l2_dev, "Created instance %d (%p)\n",
1759 ctx->idx, ctx);
1760
1761 return 0;
1762
1763 err_ctrls_setup:
1764 v4l2_m2m_ctx_release(ctx->fh.m2m_ctx);
1765 err_ctx_init:
1766 clk_disable_unprepare(dev->clk_ahb);
1767 err_clk_ahb:
1768 clk_disable_unprepare(dev->clk_per);
1769 err_clk_per:
1770 pm_runtime_put_sync(&dev->plat_dev->dev);
1771 err_pm_get:
1772 v4l2_fh_del(&ctx->fh);
1773 v4l2_fh_exit(&ctx->fh);
1774 clear_bit(ctx->idx, &dev->instance_mask);
1775 err_coda_name_init:
1776 err_coda_max:
1777 kfree(ctx);
1778 return ret;
1779 }
1780
coda_release(struct file * file)1781 static int coda_release(struct file *file)
1782 {
1783 struct coda_dev *dev = video_drvdata(file);
1784 struct coda_ctx *ctx = fh_to_ctx(file->private_data);
1785
1786 v4l2_dbg(1, coda_debug, &dev->v4l2_dev, "Releasing instance %p\n",
1787 ctx);
1788
1789 if (ctx->inst_type == CODA_INST_DECODER && ctx->use_bit)
1790 coda_bit_stream_end_flag(ctx);
1791
1792 /* If this instance is running, call .job_abort and wait for it to end */
1793 v4l2_m2m_ctx_release(ctx->fh.m2m_ctx);
1794
1795 /* In case the instance was not running, we still need to call SEQ_END */
1796 if (ctx->ops->seq_end_work) {
1797 queue_work(dev->workqueue, &ctx->seq_end_work);
1798 flush_work(&ctx->seq_end_work);
1799 }
1800
1801 coda_lock(ctx);
1802 list_del(&ctx->list);
1803 coda_unlock(ctx);
1804
1805 if (ctx->dev->devtype->product == CODA_DX6)
1806 coda_free_aux_buf(dev, &ctx->workbuf);
1807
1808 v4l2_ctrl_handler_free(&ctx->ctrls);
1809 clk_disable_unprepare(dev->clk_ahb);
1810 clk_disable_unprepare(dev->clk_per);
1811 pm_runtime_put_sync(&dev->plat_dev->dev);
1812 v4l2_fh_del(&ctx->fh);
1813 v4l2_fh_exit(&ctx->fh);
1814 clear_bit(ctx->idx, &dev->instance_mask);
1815 if (ctx->ops->release)
1816 ctx->ops->release(ctx);
1817 debugfs_remove_recursive(ctx->debugfs_entry);
1818 kfree(ctx);
1819
1820 return 0;
1821 }
1822
1823 static const struct v4l2_file_operations coda_fops = {
1824 .owner = THIS_MODULE,
1825 .open = coda_open,
1826 .release = coda_release,
1827 .poll = v4l2_m2m_fop_poll,
1828 .unlocked_ioctl = video_ioctl2,
1829 .mmap = v4l2_m2m_fop_mmap,
1830 };
1831
coda_hw_init(struct coda_dev * dev)1832 static int coda_hw_init(struct coda_dev *dev)
1833 {
1834 u32 data;
1835 u16 *p;
1836 int i, ret;
1837
1838 ret = clk_prepare_enable(dev->clk_per);
1839 if (ret)
1840 goto err_clk_per;
1841
1842 ret = clk_prepare_enable(dev->clk_ahb);
1843 if (ret)
1844 goto err_clk_ahb;
1845
1846 if (dev->rstc)
1847 reset_control_reset(dev->rstc);
1848
1849 /*
1850 * Copy the first CODA_ISRAM_SIZE in the internal SRAM.
1851 * The 16-bit chars in the code buffer are in memory access
1852 * order, re-sort them to CODA order for register download.
1853 * Data in this SRAM survives a reboot.
1854 */
1855 p = (u16 *)dev->codebuf.vaddr;
1856 if (dev->devtype->product == CODA_DX6) {
1857 for (i = 0; i < (CODA_ISRAM_SIZE / 2); i++) {
1858 data = CODA_DOWN_ADDRESS_SET(i) |
1859 CODA_DOWN_DATA_SET(p[i ^ 1]);
1860 coda_write(dev, data, CODA_REG_BIT_CODE_DOWN);
1861 }
1862 } else {
1863 for (i = 0; i < (CODA_ISRAM_SIZE / 2); i++) {
1864 data = CODA_DOWN_ADDRESS_SET(i) |
1865 CODA_DOWN_DATA_SET(p[round_down(i, 4) +
1866 3 - (i % 4)]);
1867 coda_write(dev, data, CODA_REG_BIT_CODE_DOWN);
1868 }
1869 }
1870
1871 /* Clear registers */
1872 for (i = 0; i < 64; i++)
1873 coda_write(dev, 0, CODA_REG_BIT_CODE_BUF_ADDR + i * 4);
1874
1875 /* Tell the BIT where to find everything it needs */
1876 if (dev->devtype->product == CODA_960 ||
1877 dev->devtype->product == CODA_7541) {
1878 coda_write(dev, dev->tempbuf.paddr,
1879 CODA_REG_BIT_TEMP_BUF_ADDR);
1880 coda_write(dev, 0, CODA_REG_BIT_BIT_STREAM_PARAM);
1881 } else {
1882 coda_write(dev, dev->workbuf.paddr,
1883 CODA_REG_BIT_WORK_BUF_ADDR);
1884 }
1885 coda_write(dev, dev->codebuf.paddr,
1886 CODA_REG_BIT_CODE_BUF_ADDR);
1887 coda_write(dev, 0, CODA_REG_BIT_CODE_RUN);
1888
1889 /* Set default values */
1890 switch (dev->devtype->product) {
1891 case CODA_DX6:
1892 coda_write(dev, CODADX6_STREAM_BUF_PIC_FLUSH,
1893 CODA_REG_BIT_STREAM_CTRL);
1894 break;
1895 default:
1896 coda_write(dev, CODA7_STREAM_BUF_PIC_FLUSH,
1897 CODA_REG_BIT_STREAM_CTRL);
1898 }
1899 if (dev->devtype->product == CODA_960)
1900 coda_write(dev, 1 << 12, CODA_REG_BIT_FRAME_MEM_CTRL);
1901 else
1902 coda_write(dev, 0, CODA_REG_BIT_FRAME_MEM_CTRL);
1903
1904 if (dev->devtype->product != CODA_DX6)
1905 coda_write(dev, 0, CODA7_REG_BIT_AXI_SRAM_USE);
1906
1907 coda_write(dev, CODA_INT_INTERRUPT_ENABLE,
1908 CODA_REG_BIT_INT_ENABLE);
1909
1910 /* Reset VPU and start processor */
1911 data = coda_read(dev, CODA_REG_BIT_CODE_RESET);
1912 data |= CODA_REG_RESET_ENABLE;
1913 coda_write(dev, data, CODA_REG_BIT_CODE_RESET);
1914 udelay(10);
1915 data &= ~CODA_REG_RESET_ENABLE;
1916 coda_write(dev, data, CODA_REG_BIT_CODE_RESET);
1917 coda_write(dev, CODA_REG_RUN_ENABLE, CODA_REG_BIT_CODE_RUN);
1918
1919 clk_disable_unprepare(dev->clk_ahb);
1920 clk_disable_unprepare(dev->clk_per);
1921
1922 return 0;
1923
1924 err_clk_ahb:
1925 clk_disable_unprepare(dev->clk_per);
1926 err_clk_per:
1927 return ret;
1928 }
1929
coda_register_device(struct coda_dev * dev,int i)1930 static int coda_register_device(struct coda_dev *dev, int i)
1931 {
1932 struct video_device *vfd = &dev->vfd[i];
1933
1934 if (i >= dev->devtype->num_vdevs)
1935 return -EINVAL;
1936
1937 strlcpy(vfd->name, dev->devtype->vdevs[i]->name, sizeof(vfd->name));
1938 vfd->fops = &coda_fops;
1939 vfd->ioctl_ops = &coda_ioctl_ops;
1940 vfd->release = video_device_release_empty,
1941 vfd->lock = &dev->dev_mutex;
1942 vfd->v4l2_dev = &dev->v4l2_dev;
1943 vfd->vfl_dir = VFL_DIR_M2M;
1944 video_set_drvdata(vfd, dev);
1945
1946 /* Not applicable, use the selection API instead */
1947 v4l2_disable_ioctl(vfd, VIDIOC_CROPCAP);
1948 v4l2_disable_ioctl(vfd, VIDIOC_G_CROP);
1949 v4l2_disable_ioctl(vfd, VIDIOC_S_CROP);
1950
1951 return video_register_device(vfd, VFL_TYPE_GRABBER, 0);
1952 }
1953
coda_fw_callback(const struct firmware * fw,void * context)1954 static void coda_fw_callback(const struct firmware *fw, void *context)
1955 {
1956 struct coda_dev *dev = context;
1957 struct platform_device *pdev = dev->plat_dev;
1958 int i, ret;
1959
1960 if (!fw) {
1961 v4l2_err(&dev->v4l2_dev, "firmware request failed\n");
1962 goto put_pm;
1963 }
1964
1965 /* allocate auxiliary per-device code buffer for the BIT processor */
1966 ret = coda_alloc_aux_buf(dev, &dev->codebuf, fw->size, "codebuf",
1967 dev->debugfs_root);
1968 if (ret < 0)
1969 goto put_pm;
1970
1971 /* Copy the whole firmware image to the code buffer */
1972 memcpy(dev->codebuf.vaddr, fw->data, fw->size);
1973 release_firmware(fw);
1974
1975 ret = coda_hw_init(dev);
1976 if (ret < 0) {
1977 v4l2_err(&dev->v4l2_dev, "HW initialization failed\n");
1978 goto put_pm;
1979 }
1980
1981 ret = coda_check_firmware(dev);
1982 if (ret < 0)
1983 goto put_pm;
1984
1985 dev->alloc_ctx = vb2_dma_contig_init_ctx(&pdev->dev);
1986 if (IS_ERR(dev->alloc_ctx)) {
1987 v4l2_err(&dev->v4l2_dev, "Failed to alloc vb2 context\n");
1988 goto put_pm;
1989 }
1990
1991 dev->m2m_dev = v4l2_m2m_init(&coda_m2m_ops);
1992 if (IS_ERR(dev->m2m_dev)) {
1993 v4l2_err(&dev->v4l2_dev, "Failed to init mem2mem device\n");
1994 goto rel_ctx;
1995 }
1996
1997 for (i = 0; i < dev->devtype->num_vdevs; i++) {
1998 ret = coda_register_device(dev, i);
1999 if (ret) {
2000 v4l2_err(&dev->v4l2_dev,
2001 "Failed to register %s video device: %d\n",
2002 dev->devtype->vdevs[i]->name, ret);
2003 goto rel_vfd;
2004 }
2005 }
2006
2007 v4l2_info(&dev->v4l2_dev, "codec registered as /dev/video[%d-%d]\n",
2008 dev->vfd[0].num, dev->vfd[i - 1].num);
2009
2010 pm_runtime_put_sync(&pdev->dev);
2011 return;
2012
2013 rel_vfd:
2014 while (--i >= 0)
2015 video_unregister_device(&dev->vfd[i]);
2016 v4l2_m2m_release(dev->m2m_dev);
2017 rel_ctx:
2018 vb2_dma_contig_cleanup_ctx(dev->alloc_ctx);
2019 put_pm:
2020 pm_runtime_put_sync(&pdev->dev);
2021 }
2022
coda_firmware_request(struct coda_dev * dev)2023 static int coda_firmware_request(struct coda_dev *dev)
2024 {
2025 char *fw = dev->devtype->firmware;
2026
2027 dev_dbg(&dev->plat_dev->dev, "requesting firmware '%s' for %s\n", fw,
2028 coda_product_name(dev->devtype->product));
2029
2030 return request_firmware_nowait(THIS_MODULE, true,
2031 fw, &dev->plat_dev->dev, GFP_KERNEL, dev, coda_fw_callback);
2032 }
2033
2034 enum coda_platform {
2035 CODA_IMX27,
2036 CODA_IMX53,
2037 CODA_IMX6Q,
2038 CODA_IMX6DL,
2039 };
2040
2041 static const struct coda_devtype coda_devdata[] = {
2042 [CODA_IMX27] = {
2043 .firmware = "v4l-codadx6-imx27.bin",
2044 .product = CODA_DX6,
2045 .codecs = codadx6_codecs,
2046 .num_codecs = ARRAY_SIZE(codadx6_codecs),
2047 .vdevs = codadx6_video_devices,
2048 .num_vdevs = ARRAY_SIZE(codadx6_video_devices),
2049 .workbuf_size = 288 * 1024 + FMO_SLICE_SAVE_BUF_SIZE * 8 * 1024,
2050 .iram_size = 0xb000,
2051 },
2052 [CODA_IMX53] = {
2053 .firmware = "v4l-coda7541-imx53.bin",
2054 .product = CODA_7541,
2055 .codecs = coda7_codecs,
2056 .num_codecs = ARRAY_SIZE(coda7_codecs),
2057 .vdevs = coda7_video_devices,
2058 .num_vdevs = ARRAY_SIZE(coda7_video_devices),
2059 .workbuf_size = 128 * 1024,
2060 .tempbuf_size = 304 * 1024,
2061 .iram_size = 0x14000,
2062 },
2063 [CODA_IMX6Q] = {
2064 .firmware = "v4l-coda960-imx6q.bin",
2065 .product = CODA_960,
2066 .codecs = coda9_codecs,
2067 .num_codecs = ARRAY_SIZE(coda9_codecs),
2068 .vdevs = coda9_video_devices,
2069 .num_vdevs = ARRAY_SIZE(coda9_video_devices),
2070 .workbuf_size = 80 * 1024,
2071 .tempbuf_size = 204 * 1024,
2072 .iram_size = 0x21000,
2073 },
2074 [CODA_IMX6DL] = {
2075 .firmware = "v4l-coda960-imx6dl.bin",
2076 .product = CODA_960,
2077 .codecs = coda9_codecs,
2078 .num_codecs = ARRAY_SIZE(coda9_codecs),
2079 .vdevs = coda9_video_devices,
2080 .num_vdevs = ARRAY_SIZE(coda9_video_devices),
2081 .workbuf_size = 80 * 1024,
2082 .tempbuf_size = 204 * 1024,
2083 .iram_size = 0x20000,
2084 },
2085 };
2086
2087 static struct platform_device_id coda_platform_ids[] = {
2088 { .name = "coda-imx27", .driver_data = CODA_IMX27 },
2089 { /* sentinel */ }
2090 };
2091 MODULE_DEVICE_TABLE(platform, coda_platform_ids);
2092
2093 #ifdef CONFIG_OF
2094 static const struct of_device_id coda_dt_ids[] = {
2095 { .compatible = "fsl,imx27-vpu", .data = &coda_devdata[CODA_IMX27] },
2096 { .compatible = "fsl,imx53-vpu", .data = &coda_devdata[CODA_IMX53] },
2097 { .compatible = "fsl,imx6q-vpu", .data = &coda_devdata[CODA_IMX6Q] },
2098 { .compatible = "fsl,imx6dl-vpu", .data = &coda_devdata[CODA_IMX6DL] },
2099 { /* sentinel */ }
2100 };
2101 MODULE_DEVICE_TABLE(of, coda_dt_ids);
2102 #endif
2103
coda_probe(struct platform_device * pdev)2104 static int coda_probe(struct platform_device *pdev)
2105 {
2106 const struct of_device_id *of_id =
2107 of_match_device(of_match_ptr(coda_dt_ids), &pdev->dev);
2108 const struct platform_device_id *pdev_id;
2109 struct coda_platform_data *pdata = pdev->dev.platform_data;
2110 struct device_node *np = pdev->dev.of_node;
2111 struct gen_pool *pool;
2112 struct coda_dev *dev;
2113 struct resource *res;
2114 int ret, irq;
2115
2116 dev = devm_kzalloc(&pdev->dev, sizeof(*dev), GFP_KERNEL);
2117 if (!dev)
2118 return -ENOMEM;
2119
2120 pdev_id = of_id ? of_id->data : platform_get_device_id(pdev);
2121
2122 if (of_id)
2123 dev->devtype = of_id->data;
2124 else if (pdev_id)
2125 dev->devtype = &coda_devdata[pdev_id->driver_data];
2126 else
2127 return -EINVAL;
2128
2129 spin_lock_init(&dev->irqlock);
2130 INIT_LIST_HEAD(&dev->instances);
2131
2132 dev->plat_dev = pdev;
2133 dev->clk_per = devm_clk_get(&pdev->dev, "per");
2134 if (IS_ERR(dev->clk_per)) {
2135 dev_err(&pdev->dev, "Could not get per clock\n");
2136 return PTR_ERR(dev->clk_per);
2137 }
2138
2139 dev->clk_ahb = devm_clk_get(&pdev->dev, "ahb");
2140 if (IS_ERR(dev->clk_ahb)) {
2141 dev_err(&pdev->dev, "Could not get ahb clock\n");
2142 return PTR_ERR(dev->clk_ahb);
2143 }
2144
2145 /* Get memory for physical registers */
2146 res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
2147 dev->regs_base = devm_ioremap_resource(&pdev->dev, res);
2148 if (IS_ERR(dev->regs_base))
2149 return PTR_ERR(dev->regs_base);
2150
2151 /* IRQ */
2152 irq = platform_get_irq_byname(pdev, "bit");
2153 if (irq < 0)
2154 irq = platform_get_irq(pdev, 0);
2155 if (irq < 0) {
2156 dev_err(&pdev->dev, "failed to get irq resource\n");
2157 return irq;
2158 }
2159
2160 ret = devm_request_threaded_irq(&pdev->dev, irq, NULL, coda_irq_handler,
2161 IRQF_ONESHOT, dev_name(&pdev->dev), dev);
2162 if (ret < 0) {
2163 dev_err(&pdev->dev, "failed to request irq: %d\n", ret);
2164 return ret;
2165 }
2166
2167 dev->rstc = devm_reset_control_get_optional(&pdev->dev, NULL);
2168 if (IS_ERR(dev->rstc)) {
2169 ret = PTR_ERR(dev->rstc);
2170 if (ret == -ENOENT || ret == -ENOSYS) {
2171 dev->rstc = NULL;
2172 } else {
2173 dev_err(&pdev->dev, "failed get reset control: %d\n",
2174 ret);
2175 return ret;
2176 }
2177 }
2178
2179 /* Get IRAM pool from device tree or platform data */
2180 pool = of_gen_pool_get(np, "iram", 0);
2181 if (!pool && pdata)
2182 pool = gen_pool_get(pdata->iram_dev, NULL);
2183 if (!pool) {
2184 dev_err(&pdev->dev, "iram pool not available\n");
2185 return -ENOMEM;
2186 }
2187 dev->iram_pool = pool;
2188
2189 ret = v4l2_device_register(&pdev->dev, &dev->v4l2_dev);
2190 if (ret)
2191 return ret;
2192
2193 mutex_init(&dev->dev_mutex);
2194 mutex_init(&dev->coda_mutex);
2195
2196 dev->debugfs_root = debugfs_create_dir("coda", NULL);
2197 if (!dev->debugfs_root)
2198 dev_warn(&pdev->dev, "failed to create debugfs root\n");
2199
2200 /* allocate auxiliary per-device buffers for the BIT processor */
2201 if (dev->devtype->product == CODA_DX6) {
2202 ret = coda_alloc_aux_buf(dev, &dev->workbuf,
2203 dev->devtype->workbuf_size, "workbuf",
2204 dev->debugfs_root);
2205 if (ret < 0)
2206 goto err_v4l2_register;
2207 }
2208
2209 if (dev->devtype->tempbuf_size) {
2210 ret = coda_alloc_aux_buf(dev, &dev->tempbuf,
2211 dev->devtype->tempbuf_size, "tempbuf",
2212 dev->debugfs_root);
2213 if (ret < 0)
2214 goto err_v4l2_register;
2215 }
2216
2217 dev->iram.size = dev->devtype->iram_size;
2218 dev->iram.vaddr = gen_pool_dma_alloc(dev->iram_pool, dev->iram.size,
2219 &dev->iram.paddr);
2220 if (!dev->iram.vaddr) {
2221 dev_warn(&pdev->dev, "unable to alloc iram\n");
2222 } else {
2223 memset(dev->iram.vaddr, 0, dev->iram.size);
2224 dev->iram.blob.data = dev->iram.vaddr;
2225 dev->iram.blob.size = dev->iram.size;
2226 dev->iram.dentry = debugfs_create_blob("iram", 0644,
2227 dev->debugfs_root,
2228 &dev->iram.blob);
2229 }
2230
2231 dev->workqueue = alloc_workqueue("coda", WQ_UNBOUND | WQ_MEM_RECLAIM, 1);
2232 if (!dev->workqueue) {
2233 dev_err(&pdev->dev, "unable to alloc workqueue\n");
2234 ret = -ENOMEM;
2235 goto err_v4l2_register;
2236 }
2237
2238 platform_set_drvdata(pdev, dev);
2239
2240 /*
2241 * Start activated so we can directly call coda_hw_init in
2242 * coda_fw_callback regardless of whether CONFIG_PM is
2243 * enabled or whether the device is associated with a PM domain.
2244 */
2245 pm_runtime_get_noresume(&pdev->dev);
2246 pm_runtime_set_active(&pdev->dev);
2247 pm_runtime_enable(&pdev->dev);
2248
2249 return coda_firmware_request(dev);
2250
2251 err_v4l2_register:
2252 v4l2_device_unregister(&dev->v4l2_dev);
2253 return ret;
2254 }
2255
coda_remove(struct platform_device * pdev)2256 static int coda_remove(struct platform_device *pdev)
2257 {
2258 struct coda_dev *dev = platform_get_drvdata(pdev);
2259 int i;
2260
2261 for (i = 0; i < ARRAY_SIZE(dev->vfd); i++) {
2262 if (video_get_drvdata(&dev->vfd[i]))
2263 video_unregister_device(&dev->vfd[i]);
2264 }
2265 if (dev->m2m_dev)
2266 v4l2_m2m_release(dev->m2m_dev);
2267 pm_runtime_disable(&pdev->dev);
2268 if (dev->alloc_ctx)
2269 vb2_dma_contig_cleanup_ctx(dev->alloc_ctx);
2270 v4l2_device_unregister(&dev->v4l2_dev);
2271 destroy_workqueue(dev->workqueue);
2272 if (dev->iram.vaddr)
2273 gen_pool_free(dev->iram_pool, (unsigned long)dev->iram.vaddr,
2274 dev->iram.size);
2275 coda_free_aux_buf(dev, &dev->codebuf);
2276 coda_free_aux_buf(dev, &dev->tempbuf);
2277 coda_free_aux_buf(dev, &dev->workbuf);
2278 debugfs_remove_recursive(dev->debugfs_root);
2279 return 0;
2280 }
2281
2282 #ifdef CONFIG_PM
coda_runtime_resume(struct device * dev)2283 static int coda_runtime_resume(struct device *dev)
2284 {
2285 struct coda_dev *cdev = dev_get_drvdata(dev);
2286 int ret = 0;
2287
2288 if (dev->pm_domain && cdev->codebuf.vaddr) {
2289 ret = coda_hw_init(cdev);
2290 if (ret)
2291 v4l2_err(&cdev->v4l2_dev, "HW initialization failed\n");
2292 }
2293
2294 return ret;
2295 }
2296 #endif
2297
2298 static const struct dev_pm_ops coda_pm_ops = {
2299 SET_RUNTIME_PM_OPS(NULL, coda_runtime_resume, NULL)
2300 };
2301
2302 static struct platform_driver coda_driver = {
2303 .probe = coda_probe,
2304 .remove = coda_remove,
2305 .driver = {
2306 .name = CODA_NAME,
2307 .of_match_table = of_match_ptr(coda_dt_ids),
2308 .pm = &coda_pm_ops,
2309 },
2310 .id_table = coda_platform_ids,
2311 };
2312
2313 module_platform_driver(coda_driver);
2314
2315 MODULE_LICENSE("GPL");
2316 MODULE_AUTHOR("Javier Martin <javier.martin@vista-silicon.com>");
2317 MODULE_DESCRIPTION("Coda multi-standard codec V4L2 driver");
2318