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Merge tag 'for-v3.13-fixes' of git://git.infradead.org/battery-2.6
[mirror_ubuntu-jammy-kernel.git] / drivers / media / platform / coda.c
1 /*
2 * Coda multi-standard codec IP
3 *
4 * Copyright (C) 2012 Vista Silicon S.L.
5 * Javier Martin, <javier.martin@vista-silicon.com>
6 * Xavier Duret
7 *
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License as published by
10 * the Free Software Foundation; either version 2 of the License, or
11 * (at your option) any later version.
12 */
13
14 #include <linux/clk.h>
15 #include <linux/delay.h>
16 #include <linux/firmware.h>
17 #include <linux/genalloc.h>
18 #include <linux/interrupt.h>
19 #include <linux/io.h>
20 #include <linux/irq.h>
21 #include <linux/kfifo.h>
22 #include <linux/module.h>
23 #include <linux/of_device.h>
24 #include <linux/platform_device.h>
25 #include <linux/slab.h>
26 #include <linux/videodev2.h>
27 #include <linux/of.h>
28 #include <linux/platform_data/coda.h>
29
30 #include <media/v4l2-ctrls.h>
31 #include <media/v4l2-device.h>
32 #include <media/v4l2-event.h>
33 #include <media/v4l2-ioctl.h>
34 #include <media/v4l2-mem2mem.h>
35 #include <media/videobuf2-core.h>
36 #include <media/videobuf2-dma-contig.h>
37
38 #include "coda.h"
39
40 #define CODA_NAME "coda"
41
42 #define CODADX6_MAX_INSTANCES 4
43
44 #define CODA_FMO_BUF_SIZE 32
45 #define CODADX6_WORK_BUF_SIZE (288 * 1024 + CODA_FMO_BUF_SIZE * 8 * 1024)
46 #define CODA7_WORK_BUF_SIZE (128 * 1024)
47 #define CODA7_TEMP_BUF_SIZE (304 * 1024)
48 #define CODA_PARA_BUF_SIZE (10 * 1024)
49 #define CODA_ISRAM_SIZE (2048 * 2)
50 #define CODADX6_IRAM_SIZE 0xb000
51 #define CODA7_IRAM_SIZE 0x14000
52
53 #define CODA7_PS_BUF_SIZE 0x28000
54
55 #define CODA_MAX_FRAMEBUFFERS 8
56
57 #define CODA_MAX_FRAME_SIZE 0x100000
58 #define FMO_SLICE_SAVE_BUF_SIZE (32)
59 #define CODA_DEFAULT_GAMMA 4096
60
61 #define MIN_W 176
62 #define MIN_H 144
63
64 #define S_ALIGN 1 /* multiple of 2 */
65 #define W_ALIGN 1 /* multiple of 2 */
66 #define H_ALIGN 1 /* multiple of 2 */
67
68 #define fh_to_ctx(__fh) container_of(__fh, struct coda_ctx, fh)
69
70 static int coda_debug;
71 module_param(coda_debug, int, 0644);
72 MODULE_PARM_DESC(coda_debug, "Debug level (0-1)");
73
74 enum {
75 V4L2_M2M_SRC = 0,
76 V4L2_M2M_DST = 1,
77 };
78
79 enum coda_inst_type {
80 CODA_INST_ENCODER,
81 CODA_INST_DECODER,
82 };
83
84 enum coda_product {
85 CODA_DX6 = 0xf001,
86 CODA_7541 = 0xf012,
87 };
88
89 struct coda_fmt {
90 char *name;
91 u32 fourcc;
92 };
93
94 struct coda_codec {
95 u32 mode;
96 u32 src_fourcc;
97 u32 dst_fourcc;
98 u32 max_w;
99 u32 max_h;
100 };
101
102 struct coda_devtype {
103 char *firmware;
104 enum coda_product product;
105 struct coda_codec *codecs;
106 unsigned int num_codecs;
107 size_t workbuf_size;
108 };
109
110 /* Per-queue, driver-specific private data */
111 struct coda_q_data {
112 unsigned int width;
113 unsigned int height;
114 unsigned int sizeimage;
115 unsigned int fourcc;
116 };
117
118 struct coda_aux_buf {
119 void *vaddr;
120 dma_addr_t paddr;
121 u32 size;
122 };
123
124 struct coda_dev {
125 struct v4l2_device v4l2_dev;
126 struct video_device vfd;
127 struct platform_device *plat_dev;
128 const struct coda_devtype *devtype;
129
130 void __iomem *regs_base;
131 struct clk *clk_per;
132 struct clk *clk_ahb;
133
134 struct coda_aux_buf codebuf;
135 struct coda_aux_buf tempbuf;
136 struct coda_aux_buf workbuf;
137 struct gen_pool *iram_pool;
138 long unsigned int iram_vaddr;
139 long unsigned int iram_paddr;
140 unsigned long iram_size;
141
142 spinlock_t irqlock;
143 struct mutex dev_mutex;
144 struct mutex coda_mutex;
145 struct v4l2_m2m_dev *m2m_dev;
146 struct vb2_alloc_ctx *alloc_ctx;
147 struct list_head instances;
148 unsigned long instance_mask;
149 struct delayed_work timeout;
150 };
151
152 struct coda_params {
153 u8 rot_mode;
154 u8 h264_intra_qp;
155 u8 h264_inter_qp;
156 u8 mpeg4_intra_qp;
157 u8 mpeg4_inter_qp;
158 u8 gop_size;
159 int codec_mode;
160 int codec_mode_aux;
161 enum v4l2_mpeg_video_multi_slice_mode slice_mode;
162 u32 framerate;
163 u16 bitrate;
164 u32 slice_max_bits;
165 u32 slice_max_mb;
166 };
167
168 struct coda_iram_info {
169 u32 axi_sram_use;
170 phys_addr_t buf_bit_use;
171 phys_addr_t buf_ip_ac_dc_use;
172 phys_addr_t buf_dbk_y_use;
173 phys_addr_t buf_dbk_c_use;
174 phys_addr_t buf_ovl_use;
175 phys_addr_t buf_btp_use;
176 phys_addr_t search_ram_paddr;
177 int search_ram_size;
178 };
179
180 struct coda_ctx {
181 struct coda_dev *dev;
182 struct mutex buffer_mutex;
183 struct list_head list;
184 struct work_struct skip_run;
185 int aborting;
186 int initialized;
187 int streamon_out;
188 int streamon_cap;
189 u32 isequence;
190 u32 qsequence;
191 u32 osequence;
192 struct coda_q_data q_data[2];
193 enum coda_inst_type inst_type;
194 struct coda_codec *codec;
195 enum v4l2_colorspace colorspace;
196 struct coda_params params;
197 struct v4l2_m2m_ctx *m2m_ctx;
198 struct v4l2_ctrl_handler ctrls;
199 struct v4l2_fh fh;
200 int gopcounter;
201 int runcounter;
202 char vpu_header[3][64];
203 int vpu_header_size[3];
204 struct kfifo bitstream_fifo;
205 struct mutex bitstream_mutex;
206 struct coda_aux_buf bitstream;
207 bool prescan_failed;
208 struct coda_aux_buf parabuf;
209 struct coda_aux_buf psbuf;
210 struct coda_aux_buf slicebuf;
211 struct coda_aux_buf internal_frames[CODA_MAX_FRAMEBUFFERS];
212 struct coda_aux_buf workbuf;
213 int num_internal_frames;
214 int idx;
215 int reg_idx;
216 struct coda_iram_info iram_info;
217 u32 bit_stream_param;
218 u32 frm_dis_flg;
219 int display_idx;
220 };
221
222 static const u8 coda_filler_nal[14] = { 0x00, 0x00, 0x00, 0x01, 0x0c, 0xff,
223 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x80 };
224 static const u8 coda_filler_size[8] = { 0, 7, 14, 13, 12, 11, 10, 9 };
225
226 static inline void coda_write(struct coda_dev *dev, u32 data, u32 reg)
227 {
228 v4l2_dbg(1, coda_debug, &dev->v4l2_dev,
229 "%s: data=0x%x, reg=0x%x\n", __func__, data, reg);
230 writel(data, dev->regs_base + reg);
231 }
232
233 static inline unsigned int coda_read(struct coda_dev *dev, u32 reg)
234 {
235 u32 data;
236 data = readl(dev->regs_base + reg);
237 v4l2_dbg(1, coda_debug, &dev->v4l2_dev,
238 "%s: data=0x%x, reg=0x%x\n", __func__, data, reg);
239 return data;
240 }
241
242 static inline unsigned long coda_isbusy(struct coda_dev *dev)
243 {
244 return coda_read(dev, CODA_REG_BIT_BUSY);
245 }
246
247 static inline int coda_is_initialized(struct coda_dev *dev)
248 {
249 return (coda_read(dev, CODA_REG_BIT_CUR_PC) != 0);
250 }
251
252 static int coda_wait_timeout(struct coda_dev *dev)
253 {
254 unsigned long timeout = jiffies + msecs_to_jiffies(1000);
255
256 while (coda_isbusy(dev)) {
257 if (time_after(jiffies, timeout))
258 return -ETIMEDOUT;
259 }
260 return 0;
261 }
262
263 static void coda_command_async(struct coda_ctx *ctx, int cmd)
264 {
265 struct coda_dev *dev = ctx->dev;
266
267 if (dev->devtype->product == CODA_7541) {
268 /* Restore context related registers to CODA */
269 coda_write(dev, ctx->bit_stream_param,
270 CODA_REG_BIT_BIT_STREAM_PARAM);
271 coda_write(dev, ctx->frm_dis_flg,
272 CODA_REG_BIT_FRM_DIS_FLG(ctx->reg_idx));
273 coda_write(dev, ctx->workbuf.paddr, CODA_REG_BIT_WORK_BUF_ADDR);
274 }
275
276 coda_write(dev, CODA_REG_BIT_BUSY_FLAG, CODA_REG_BIT_BUSY);
277
278 coda_write(dev, ctx->idx, CODA_REG_BIT_RUN_INDEX);
279 coda_write(dev, ctx->params.codec_mode, CODA_REG_BIT_RUN_COD_STD);
280 coda_write(dev, ctx->params.codec_mode_aux, CODA7_REG_BIT_RUN_AUX_STD);
281
282 coda_write(dev, cmd, CODA_REG_BIT_RUN_COMMAND);
283 }
284
285 static int coda_command_sync(struct coda_ctx *ctx, int cmd)
286 {
287 struct coda_dev *dev = ctx->dev;
288
289 coda_command_async(ctx, cmd);
290 return coda_wait_timeout(dev);
291 }
292
293 static struct coda_q_data *get_q_data(struct coda_ctx *ctx,
294 enum v4l2_buf_type type)
295 {
296 switch (type) {
297 case V4L2_BUF_TYPE_VIDEO_OUTPUT:
298 return &(ctx->q_data[V4L2_M2M_SRC]);
299 case V4L2_BUF_TYPE_VIDEO_CAPTURE:
300 return &(ctx->q_data[V4L2_M2M_DST]);
301 default:
302 BUG();
303 }
304 return NULL;
305 }
306
307 /*
308 * Array of all formats supported by any version of Coda:
309 */
310 static struct coda_fmt coda_formats[] = {
311 {
312 .name = "YUV 4:2:0 Planar, YCbCr",
313 .fourcc = V4L2_PIX_FMT_YUV420,
314 },
315 {
316 .name = "YUV 4:2:0 Planar, YCrCb",
317 .fourcc = V4L2_PIX_FMT_YVU420,
318 },
319 {
320 .name = "H264 Encoded Stream",
321 .fourcc = V4L2_PIX_FMT_H264,
322 },
323 {
324 .name = "MPEG4 Encoded Stream",
325 .fourcc = V4L2_PIX_FMT_MPEG4,
326 },
327 };
328
329 #define CODA_CODEC(mode, src_fourcc, dst_fourcc, max_w, max_h) \
330 { mode, src_fourcc, dst_fourcc, max_w, max_h }
331
332 /*
333 * Arrays of codecs supported by each given version of Coda:
334 * i.MX27 -> codadx6
335 * i.MX5x -> coda7
336 * i.MX6 -> coda960
337 * Use V4L2_PIX_FMT_YUV420 as placeholder for all supported YUV 4:2:0 variants
338 */
339 static struct coda_codec codadx6_codecs[] = {
340 CODA_CODEC(CODADX6_MODE_ENCODE_H264, V4L2_PIX_FMT_YUV420, V4L2_PIX_FMT_H264, 720, 576),
341 CODA_CODEC(CODADX6_MODE_ENCODE_MP4, V4L2_PIX_FMT_YUV420, V4L2_PIX_FMT_MPEG4, 720, 576),
342 };
343
344 static struct coda_codec coda7_codecs[] = {
345 CODA_CODEC(CODA7_MODE_ENCODE_H264, V4L2_PIX_FMT_YUV420, V4L2_PIX_FMT_H264, 1280, 720),
346 CODA_CODEC(CODA7_MODE_ENCODE_MP4, V4L2_PIX_FMT_YUV420, V4L2_PIX_FMT_MPEG4, 1280, 720),
347 CODA_CODEC(CODA7_MODE_DECODE_H264, V4L2_PIX_FMT_H264, V4L2_PIX_FMT_YUV420, 1920, 1080),
348 CODA_CODEC(CODA7_MODE_DECODE_MP4, V4L2_PIX_FMT_MPEG4, V4L2_PIX_FMT_YUV420, 1920, 1080),
349 };
350
351 static bool coda_format_is_yuv(u32 fourcc)
352 {
353 switch (fourcc) {
354 case V4L2_PIX_FMT_YUV420:
355 case V4L2_PIX_FMT_YVU420:
356 return true;
357 default:
358 return false;
359 }
360 }
361
362 /*
363 * Normalize all supported YUV 4:2:0 formats to the value used in the codec
364 * tables.
365 */
366 static u32 coda_format_normalize_yuv(u32 fourcc)
367 {
368 return coda_format_is_yuv(fourcc) ? V4L2_PIX_FMT_YUV420 : fourcc;
369 }
370
371 static struct coda_codec *coda_find_codec(struct coda_dev *dev, int src_fourcc,
372 int dst_fourcc)
373 {
374 struct coda_codec *codecs = dev->devtype->codecs;
375 int num_codecs = dev->devtype->num_codecs;
376 int k;
377
378 src_fourcc = coda_format_normalize_yuv(src_fourcc);
379 dst_fourcc = coda_format_normalize_yuv(dst_fourcc);
380 if (src_fourcc == dst_fourcc)
381 return NULL;
382
383 for (k = 0; k < num_codecs; k++) {
384 if (codecs[k].src_fourcc == src_fourcc &&
385 codecs[k].dst_fourcc == dst_fourcc)
386 break;
387 }
388
389 if (k == num_codecs)
390 return NULL;
391
392 return &codecs[k];
393 }
394
395 static void coda_get_max_dimensions(struct coda_dev *dev,
396 struct coda_codec *codec,
397 int *max_w, int *max_h)
398 {
399 struct coda_codec *codecs = dev->devtype->codecs;
400 int num_codecs = dev->devtype->num_codecs;
401 unsigned int w, h;
402 int k;
403
404 if (codec) {
405 w = codec->max_w;
406 h = codec->max_h;
407 } else {
408 for (k = 0, w = 0, h = 0; k < num_codecs; k++) {
409 w = max(w, codecs[k].max_w);
410 h = max(h, codecs[k].max_h);
411 }
412 }
413
414 if (max_w)
415 *max_w = w;
416 if (max_h)
417 *max_h = h;
418 }
419
420 static char *coda_product_name(int product)
421 {
422 static char buf[9];
423
424 switch (product) {
425 case CODA_DX6:
426 return "CodaDx6";
427 case CODA_7541:
428 return "CODA7541";
429 default:
430 snprintf(buf, sizeof(buf), "(0x%04x)", product);
431 return buf;
432 }
433 }
434
435 /*
436 * V4L2 ioctl() operations.
437 */
438 static int coda_querycap(struct file *file, void *priv,
439 struct v4l2_capability *cap)
440 {
441 struct coda_ctx *ctx = fh_to_ctx(priv);
442
443 strlcpy(cap->driver, CODA_NAME, sizeof(cap->driver));
444 strlcpy(cap->card, coda_product_name(ctx->dev->devtype->product),
445 sizeof(cap->card));
446 strlcpy(cap->bus_info, "platform:" CODA_NAME, sizeof(cap->bus_info));
447 /*
448 * This is only a mem-to-mem video device. The capture and output
449 * device capability flags are left only for backward compatibility
450 * and are scheduled for removal.
451 */
452 cap->device_caps = V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_VIDEO_OUTPUT |
453 V4L2_CAP_VIDEO_M2M | V4L2_CAP_STREAMING;
454 cap->capabilities = cap->device_caps | V4L2_CAP_DEVICE_CAPS;
455
456 return 0;
457 }
458
459 static int enum_fmt(void *priv, struct v4l2_fmtdesc *f,
460 enum v4l2_buf_type type, int src_fourcc)
461 {
462 struct coda_ctx *ctx = fh_to_ctx(priv);
463 struct coda_codec *codecs = ctx->dev->devtype->codecs;
464 struct coda_fmt *formats = coda_formats;
465 struct coda_fmt *fmt;
466 int num_codecs = ctx->dev->devtype->num_codecs;
467 int num_formats = ARRAY_SIZE(coda_formats);
468 int i, k, num = 0;
469
470 for (i = 0; i < num_formats; i++) {
471 /* Both uncompressed formats are always supported */
472 if (coda_format_is_yuv(formats[i].fourcc) &&
473 !coda_format_is_yuv(src_fourcc)) {
474 if (num == f->index)
475 break;
476 ++num;
477 continue;
478 }
479 /* Compressed formats may be supported, check the codec list */
480 for (k = 0; k < num_codecs; k++) {
481 /* if src_fourcc is set, only consider matching codecs */
482 if (type == V4L2_BUF_TYPE_VIDEO_CAPTURE &&
483 formats[i].fourcc == codecs[k].dst_fourcc &&
484 (!src_fourcc || src_fourcc == codecs[k].src_fourcc))
485 break;
486 if (type == V4L2_BUF_TYPE_VIDEO_OUTPUT &&
487 formats[i].fourcc == codecs[k].src_fourcc)
488 break;
489 }
490 if (k < num_codecs) {
491 if (num == f->index)
492 break;
493 ++num;
494 }
495 }
496
497 if (i < num_formats) {
498 fmt = &formats[i];
499 strlcpy(f->description, fmt->name, sizeof(f->description));
500 f->pixelformat = fmt->fourcc;
501 if (!coda_format_is_yuv(fmt->fourcc))
502 f->flags |= V4L2_FMT_FLAG_COMPRESSED;
503 return 0;
504 }
505
506 /* Format not found */
507 return -EINVAL;
508 }
509
510 static int coda_enum_fmt_vid_cap(struct file *file, void *priv,
511 struct v4l2_fmtdesc *f)
512 {
513 struct coda_ctx *ctx = fh_to_ctx(priv);
514 struct vb2_queue *src_vq;
515 struct coda_q_data *q_data_src;
516
517 /* If the source format is already fixed, only list matching formats */
518 src_vq = v4l2_m2m_get_vq(ctx->m2m_ctx, V4L2_BUF_TYPE_VIDEO_OUTPUT);
519 if (vb2_is_streaming(src_vq)) {
520 q_data_src = get_q_data(ctx, V4L2_BUF_TYPE_VIDEO_OUTPUT);
521
522 return enum_fmt(priv, f, V4L2_BUF_TYPE_VIDEO_CAPTURE,
523 q_data_src->fourcc);
524 }
525
526 return enum_fmt(priv, f, V4L2_BUF_TYPE_VIDEO_CAPTURE, 0);
527 }
528
529 static int coda_enum_fmt_vid_out(struct file *file, void *priv,
530 struct v4l2_fmtdesc *f)
531 {
532 return enum_fmt(priv, f, V4L2_BUF_TYPE_VIDEO_OUTPUT, 0);
533 }
534
535 static int coda_g_fmt(struct file *file, void *priv,
536 struct v4l2_format *f)
537 {
538 struct vb2_queue *vq;
539 struct coda_q_data *q_data;
540 struct coda_ctx *ctx = fh_to_ctx(priv);
541
542 vq = v4l2_m2m_get_vq(ctx->m2m_ctx, f->type);
543 if (!vq)
544 return -EINVAL;
545
546 q_data = get_q_data(ctx, f->type);
547
548 f->fmt.pix.field = V4L2_FIELD_NONE;
549 f->fmt.pix.pixelformat = q_data->fourcc;
550 f->fmt.pix.width = q_data->width;
551 f->fmt.pix.height = q_data->height;
552 if (coda_format_is_yuv(f->fmt.pix.pixelformat))
553 f->fmt.pix.bytesperline = round_up(f->fmt.pix.width, 2);
554 else /* encoded formats h.264/mpeg4 */
555 f->fmt.pix.bytesperline = 0;
556
557 f->fmt.pix.sizeimage = q_data->sizeimage;
558 f->fmt.pix.colorspace = ctx->colorspace;
559
560 return 0;
561 }
562
563 static int coda_try_fmt(struct coda_ctx *ctx, struct coda_codec *codec,
564 struct v4l2_format *f)
565 {
566 struct coda_dev *dev = ctx->dev;
567 struct coda_q_data *q_data;
568 unsigned int max_w, max_h;
569 enum v4l2_field field;
570
571 field = f->fmt.pix.field;
572 if (field == V4L2_FIELD_ANY)
573 field = V4L2_FIELD_NONE;
574 else if (V4L2_FIELD_NONE != field)
575 return -EINVAL;
576
577 /* V4L2 specification suggests the driver corrects the format struct
578 * if any of the dimensions is unsupported */
579 f->fmt.pix.field = field;
580
581 coda_get_max_dimensions(dev, codec, &max_w, &max_h);
582 v4l_bound_align_image(&f->fmt.pix.width, MIN_W, max_w, W_ALIGN,
583 &f->fmt.pix.height, MIN_H, max_h, H_ALIGN,
584 S_ALIGN);
585
586 switch (f->fmt.pix.pixelformat) {
587 case V4L2_PIX_FMT_YUV420:
588 case V4L2_PIX_FMT_YVU420:
589 case V4L2_PIX_FMT_H264:
590 case V4L2_PIX_FMT_MPEG4:
591 case V4L2_PIX_FMT_JPEG:
592 break;
593 default:
594 q_data = get_q_data(ctx, f->type);
595 f->fmt.pix.pixelformat = q_data->fourcc;
596 }
597
598 switch (f->fmt.pix.pixelformat) {
599 case V4L2_PIX_FMT_YUV420:
600 case V4L2_PIX_FMT_YVU420:
601 /* Frame stride must be multiple of 8 */
602 f->fmt.pix.bytesperline = round_up(f->fmt.pix.width, 8);
603 f->fmt.pix.sizeimage = f->fmt.pix.bytesperline *
604 f->fmt.pix.height * 3 / 2;
605 break;
606 case V4L2_PIX_FMT_H264:
607 case V4L2_PIX_FMT_MPEG4:
608 case V4L2_PIX_FMT_JPEG:
609 f->fmt.pix.bytesperline = 0;
610 f->fmt.pix.sizeimage = CODA_MAX_FRAME_SIZE;
611 break;
612 default:
613 BUG();
614 }
615
616 f->fmt.pix.priv = 0;
617
618 return 0;
619 }
620
621 static int coda_try_fmt_vid_cap(struct file *file, void *priv,
622 struct v4l2_format *f)
623 {
624 struct coda_ctx *ctx = fh_to_ctx(priv);
625 struct coda_codec *codec;
626 struct vb2_queue *src_vq;
627 int ret;
628
629 /*
630 * If the source format is already fixed, try to find a codec that
631 * converts to the given destination format
632 */
633 src_vq = v4l2_m2m_get_vq(ctx->m2m_ctx, V4L2_BUF_TYPE_VIDEO_OUTPUT);
634 if (vb2_is_streaming(src_vq)) {
635 struct coda_q_data *q_data_src;
636
637 q_data_src = get_q_data(ctx, V4L2_BUF_TYPE_VIDEO_OUTPUT);
638 codec = coda_find_codec(ctx->dev, q_data_src->fourcc,
639 f->fmt.pix.pixelformat);
640 if (!codec)
641 return -EINVAL;
642 } else {
643 /* Otherwise determine codec by encoded format, if possible */
644 codec = coda_find_codec(ctx->dev, V4L2_PIX_FMT_YUV420,
645 f->fmt.pix.pixelformat);
646 }
647
648 f->fmt.pix.colorspace = ctx->colorspace;
649
650 ret = coda_try_fmt(ctx, codec, f);
651 if (ret < 0)
652 return ret;
653
654 /* The h.264 decoder only returns complete 16x16 macroblocks */
655 if (codec && codec->src_fourcc == V4L2_PIX_FMT_H264) {
656 f->fmt.pix.width = round_up(f->fmt.pix.width, 16);
657 f->fmt.pix.height = round_up(f->fmt.pix.height, 16);
658 f->fmt.pix.bytesperline = f->fmt.pix.width;
659 f->fmt.pix.sizeimage = f->fmt.pix.bytesperline *
660 f->fmt.pix.height * 3 / 2;
661 }
662
663 return 0;
664 }
665
666 static int coda_try_fmt_vid_out(struct file *file, void *priv,
667 struct v4l2_format *f)
668 {
669 struct coda_ctx *ctx = fh_to_ctx(priv);
670 struct coda_codec *codec;
671
672 /* Determine codec by encoded format, returns NULL if raw or invalid */
673 codec = coda_find_codec(ctx->dev, f->fmt.pix.pixelformat,
674 V4L2_PIX_FMT_YUV420);
675
676 if (!f->fmt.pix.colorspace)
677 f->fmt.pix.colorspace = V4L2_COLORSPACE_REC709;
678
679 return coda_try_fmt(ctx, codec, f);
680 }
681
682 static int coda_s_fmt(struct coda_ctx *ctx, struct v4l2_format *f)
683 {
684 struct coda_q_data *q_data;
685 struct vb2_queue *vq;
686
687 vq = v4l2_m2m_get_vq(ctx->m2m_ctx, f->type);
688 if (!vq)
689 return -EINVAL;
690
691 q_data = get_q_data(ctx, f->type);
692 if (!q_data)
693 return -EINVAL;
694
695 if (vb2_is_busy(vq)) {
696 v4l2_err(&ctx->dev->v4l2_dev, "%s queue busy\n", __func__);
697 return -EBUSY;
698 }
699
700 q_data->fourcc = f->fmt.pix.pixelformat;
701 q_data->width = f->fmt.pix.width;
702 q_data->height = f->fmt.pix.height;
703 q_data->sizeimage = f->fmt.pix.sizeimage;
704
705 v4l2_dbg(1, coda_debug, &ctx->dev->v4l2_dev,
706 "Setting format for type %d, wxh: %dx%d, fmt: %d\n",
707 f->type, q_data->width, q_data->height, q_data->fourcc);
708
709 return 0;
710 }
711
712 static int coda_s_fmt_vid_cap(struct file *file, void *priv,
713 struct v4l2_format *f)
714 {
715 struct coda_ctx *ctx = fh_to_ctx(priv);
716 int ret;
717
718 ret = coda_try_fmt_vid_cap(file, priv, f);
719 if (ret)
720 return ret;
721
722 return coda_s_fmt(ctx, f);
723 }
724
725 static int coda_s_fmt_vid_out(struct file *file, void *priv,
726 struct v4l2_format *f)
727 {
728 struct coda_ctx *ctx = fh_to_ctx(priv);
729 int ret;
730
731 ret = coda_try_fmt_vid_out(file, priv, f);
732 if (ret)
733 return ret;
734
735 ret = coda_s_fmt(ctx, f);
736 if (ret)
737 ctx->colorspace = f->fmt.pix.colorspace;
738
739 return ret;
740 }
741
742 static int coda_reqbufs(struct file *file, void *priv,
743 struct v4l2_requestbuffers *reqbufs)
744 {
745 struct coda_ctx *ctx = fh_to_ctx(priv);
746
747 return v4l2_m2m_reqbufs(file, ctx->m2m_ctx, reqbufs);
748 }
749
750 static int coda_querybuf(struct file *file, void *priv,
751 struct v4l2_buffer *buf)
752 {
753 struct coda_ctx *ctx = fh_to_ctx(priv);
754
755 return v4l2_m2m_querybuf(file, ctx->m2m_ctx, buf);
756 }
757
758 static int coda_qbuf(struct file *file, void *priv,
759 struct v4l2_buffer *buf)
760 {
761 struct coda_ctx *ctx = fh_to_ctx(priv);
762
763 return v4l2_m2m_qbuf(file, ctx->m2m_ctx, buf);
764 }
765
766 static int coda_expbuf(struct file *file, void *priv,
767 struct v4l2_exportbuffer *eb)
768 {
769 struct coda_ctx *ctx = fh_to_ctx(priv);
770
771 return v4l2_m2m_expbuf(file, ctx->m2m_ctx, eb);
772 }
773
774 static bool coda_buf_is_end_of_stream(struct coda_ctx *ctx,
775 struct v4l2_buffer *buf)
776 {
777 struct vb2_queue *src_vq;
778
779 src_vq = v4l2_m2m_get_vq(ctx->m2m_ctx, V4L2_BUF_TYPE_VIDEO_OUTPUT);
780
781 return ((ctx->bit_stream_param & CODA_BIT_STREAM_END_FLAG) &&
782 (buf->sequence == (ctx->qsequence - 1)));
783 }
784
785 static int coda_dqbuf(struct file *file, void *priv,
786 struct v4l2_buffer *buf)
787 {
788 struct coda_ctx *ctx = fh_to_ctx(priv);
789 int ret;
790
791 ret = v4l2_m2m_dqbuf(file, ctx->m2m_ctx, buf);
792
793 /* If this is the last capture buffer, emit an end-of-stream event */
794 if (buf->type == V4L2_BUF_TYPE_VIDEO_CAPTURE &&
795 coda_buf_is_end_of_stream(ctx, buf)) {
796 const struct v4l2_event eos_event = {
797 .type = V4L2_EVENT_EOS
798 };
799
800 v4l2_event_queue_fh(&ctx->fh, &eos_event);
801 }
802
803 return ret;
804 }
805
806 static int coda_create_bufs(struct file *file, void *priv,
807 struct v4l2_create_buffers *create)
808 {
809 struct coda_ctx *ctx = fh_to_ctx(priv);
810
811 return v4l2_m2m_create_bufs(file, ctx->m2m_ctx, create);
812 }
813
814 static int coda_streamon(struct file *file, void *priv,
815 enum v4l2_buf_type type)
816 {
817 struct coda_ctx *ctx = fh_to_ctx(priv);
818
819 return v4l2_m2m_streamon(file, ctx->m2m_ctx, type);
820 }
821
822 static int coda_streamoff(struct file *file, void *priv,
823 enum v4l2_buf_type type)
824 {
825 struct coda_ctx *ctx = fh_to_ctx(priv);
826 int ret;
827
828 /*
829 * This indirectly calls __vb2_queue_cancel, which dequeues all buffers.
830 * We therefore have to lock it against running hardware in this context,
831 * which still needs the buffers.
832 */
833 mutex_lock(&ctx->buffer_mutex);
834 ret = v4l2_m2m_streamoff(file, ctx->m2m_ctx, type);
835 mutex_unlock(&ctx->buffer_mutex);
836
837 return ret;
838 }
839
840 static int coda_try_decoder_cmd(struct file *file, void *fh,
841 struct v4l2_decoder_cmd *dc)
842 {
843 if (dc->cmd != V4L2_DEC_CMD_STOP)
844 return -EINVAL;
845
846 if (dc->flags & V4L2_DEC_CMD_STOP_TO_BLACK)
847 return -EINVAL;
848
849 if (!(dc->flags & V4L2_DEC_CMD_STOP_IMMEDIATELY) && (dc->stop.pts != 0))
850 return -EINVAL;
851
852 return 0;
853 }
854
855 static int coda_decoder_cmd(struct file *file, void *fh,
856 struct v4l2_decoder_cmd *dc)
857 {
858 struct coda_ctx *ctx = fh_to_ctx(fh);
859 int ret;
860
861 ret = coda_try_decoder_cmd(file, fh, dc);
862 if (ret < 0)
863 return ret;
864
865 /* Ignore decoder stop command silently in encoder context */
866 if (ctx->inst_type != CODA_INST_DECODER)
867 return 0;
868
869 /* Set the strem-end flag on this context */
870 ctx->bit_stream_param |= CODA_BIT_STREAM_END_FLAG;
871
872 return 0;
873 }
874
875 static int coda_subscribe_event(struct v4l2_fh *fh,
876 const struct v4l2_event_subscription *sub)
877 {
878 switch (sub->type) {
879 case V4L2_EVENT_EOS:
880 return v4l2_event_subscribe(fh, sub, 0, NULL);
881 default:
882 return v4l2_ctrl_subscribe_event(fh, sub);
883 }
884 }
885
886 static const struct v4l2_ioctl_ops coda_ioctl_ops = {
887 .vidioc_querycap = coda_querycap,
888
889 .vidioc_enum_fmt_vid_cap = coda_enum_fmt_vid_cap,
890 .vidioc_g_fmt_vid_cap = coda_g_fmt,
891 .vidioc_try_fmt_vid_cap = coda_try_fmt_vid_cap,
892 .vidioc_s_fmt_vid_cap = coda_s_fmt_vid_cap,
893
894 .vidioc_enum_fmt_vid_out = coda_enum_fmt_vid_out,
895 .vidioc_g_fmt_vid_out = coda_g_fmt,
896 .vidioc_try_fmt_vid_out = coda_try_fmt_vid_out,
897 .vidioc_s_fmt_vid_out = coda_s_fmt_vid_out,
898
899 .vidioc_reqbufs = coda_reqbufs,
900 .vidioc_querybuf = coda_querybuf,
901
902 .vidioc_qbuf = coda_qbuf,
903 .vidioc_expbuf = coda_expbuf,
904 .vidioc_dqbuf = coda_dqbuf,
905 .vidioc_create_bufs = coda_create_bufs,
906
907 .vidioc_streamon = coda_streamon,
908 .vidioc_streamoff = coda_streamoff,
909
910 .vidioc_try_decoder_cmd = coda_try_decoder_cmd,
911 .vidioc_decoder_cmd = coda_decoder_cmd,
912
913 .vidioc_subscribe_event = coda_subscribe_event,
914 .vidioc_unsubscribe_event = v4l2_event_unsubscribe,
915 };
916
917 static int coda_start_decoding(struct coda_ctx *ctx);
918
919 static void coda_skip_run(struct work_struct *work)
920 {
921 struct coda_ctx *ctx = container_of(work, struct coda_ctx, skip_run);
922
923 v4l2_m2m_job_finish(ctx->dev->m2m_dev, ctx->m2m_ctx);
924 }
925
926 static inline int coda_get_bitstream_payload(struct coda_ctx *ctx)
927 {
928 return kfifo_len(&ctx->bitstream_fifo);
929 }
930
931 static void coda_kfifo_sync_from_device(struct coda_ctx *ctx)
932 {
933 struct __kfifo *kfifo = &ctx->bitstream_fifo.kfifo;
934 struct coda_dev *dev = ctx->dev;
935 u32 rd_ptr;
936
937 rd_ptr = coda_read(dev, CODA_REG_BIT_RD_PTR(ctx->reg_idx));
938 kfifo->out = (kfifo->in & ~kfifo->mask) |
939 (rd_ptr - ctx->bitstream.paddr);
940 if (kfifo->out > kfifo->in)
941 kfifo->out -= kfifo->mask + 1;
942 }
943
944 static void coda_kfifo_sync_to_device_full(struct coda_ctx *ctx)
945 {
946 struct __kfifo *kfifo = &ctx->bitstream_fifo.kfifo;
947 struct coda_dev *dev = ctx->dev;
948 u32 rd_ptr, wr_ptr;
949
950 rd_ptr = ctx->bitstream.paddr + (kfifo->out & kfifo->mask);
951 coda_write(dev, rd_ptr, CODA_REG_BIT_RD_PTR(ctx->reg_idx));
952 wr_ptr = ctx->bitstream.paddr + (kfifo->in & kfifo->mask);
953 coda_write(dev, wr_ptr, CODA_REG_BIT_WR_PTR(ctx->reg_idx));
954 }
955
956 static void coda_kfifo_sync_to_device_write(struct coda_ctx *ctx)
957 {
958 struct __kfifo *kfifo = &ctx->bitstream_fifo.kfifo;
959 struct coda_dev *dev = ctx->dev;
960 u32 wr_ptr;
961
962 wr_ptr = ctx->bitstream.paddr + (kfifo->in & kfifo->mask);
963 coda_write(dev, wr_ptr, CODA_REG_BIT_WR_PTR(ctx->reg_idx));
964 }
965
966 static int coda_bitstream_queue(struct coda_ctx *ctx, struct vb2_buffer *src_buf)
967 {
968 u32 src_size = vb2_get_plane_payload(src_buf, 0);
969 u32 n;
970
971 n = kfifo_in(&ctx->bitstream_fifo, vb2_plane_vaddr(src_buf, 0), src_size);
972 if (n < src_size)
973 return -ENOSPC;
974
975 dma_sync_single_for_device(&ctx->dev->plat_dev->dev, ctx->bitstream.paddr,
976 ctx->bitstream.size, DMA_TO_DEVICE);
977
978 ctx->qsequence++;
979
980 return 0;
981 }
982
983 static bool coda_bitstream_try_queue(struct coda_ctx *ctx,
984 struct vb2_buffer *src_buf)
985 {
986 int ret;
987
988 if (coda_get_bitstream_payload(ctx) +
989 vb2_get_plane_payload(src_buf, 0) + 512 >= ctx->bitstream.size)
990 return false;
991
992 if (vb2_plane_vaddr(src_buf, 0) == NULL) {
993 v4l2_err(&ctx->dev->v4l2_dev, "trying to queue empty buffer\n");
994 return true;
995 }
996
997 ret = coda_bitstream_queue(ctx, src_buf);
998 if (ret < 0) {
999 v4l2_err(&ctx->dev->v4l2_dev, "bitstream buffer overflow\n");
1000 return false;
1001 }
1002 /* Sync read pointer to device */
1003 if (ctx == v4l2_m2m_get_curr_priv(ctx->dev->m2m_dev))
1004 coda_kfifo_sync_to_device_write(ctx);
1005
1006 ctx->prescan_failed = false;
1007
1008 return true;
1009 }
1010
1011 static void coda_fill_bitstream(struct coda_ctx *ctx)
1012 {
1013 struct vb2_buffer *src_buf;
1014
1015 while (v4l2_m2m_num_src_bufs_ready(ctx->m2m_ctx) > 0) {
1016 src_buf = v4l2_m2m_next_src_buf(ctx->m2m_ctx);
1017
1018 if (coda_bitstream_try_queue(ctx, src_buf)) {
1019 src_buf = v4l2_m2m_src_buf_remove(ctx->m2m_ctx);
1020 v4l2_m2m_buf_done(src_buf, VB2_BUF_STATE_DONE);
1021 } else {
1022 break;
1023 }
1024 }
1025 }
1026
1027 /*
1028 * Mem-to-mem operations.
1029 */
1030 static int coda_prepare_decode(struct coda_ctx *ctx)
1031 {
1032 struct vb2_buffer *dst_buf;
1033 struct coda_dev *dev = ctx->dev;
1034 struct coda_q_data *q_data_dst;
1035 u32 stridey, height;
1036 u32 picture_y, picture_cb, picture_cr;
1037
1038 dst_buf = v4l2_m2m_next_dst_buf(ctx->m2m_ctx);
1039 q_data_dst = get_q_data(ctx, V4L2_BUF_TYPE_VIDEO_CAPTURE);
1040
1041 if (ctx->params.rot_mode & CODA_ROT_90) {
1042 stridey = q_data_dst->height;
1043 height = q_data_dst->width;
1044 } else {
1045 stridey = q_data_dst->width;
1046 height = q_data_dst->height;
1047 }
1048
1049 /* Try to copy source buffer contents into the bitstream ringbuffer */
1050 mutex_lock(&ctx->bitstream_mutex);
1051 coda_fill_bitstream(ctx);
1052 mutex_unlock(&ctx->bitstream_mutex);
1053
1054 if (coda_get_bitstream_payload(ctx) < 512 &&
1055 (!(ctx->bit_stream_param & CODA_BIT_STREAM_END_FLAG))) {
1056 v4l2_dbg(1, coda_debug, &dev->v4l2_dev,
1057 "bitstream payload: %d, skipping\n",
1058 coda_get_bitstream_payload(ctx));
1059 schedule_work(&ctx->skip_run);
1060 return -EAGAIN;
1061 }
1062
1063 /* Run coda_start_decoding (again) if not yet initialized */
1064 if (!ctx->initialized) {
1065 int ret = coda_start_decoding(ctx);
1066 if (ret < 0) {
1067 v4l2_err(&dev->v4l2_dev, "failed to start decoding\n");
1068 schedule_work(&ctx->skip_run);
1069 return -EAGAIN;
1070 } else {
1071 ctx->initialized = 1;
1072 }
1073 }
1074
1075 /* Set rotator output */
1076 picture_y = vb2_dma_contig_plane_dma_addr(dst_buf, 0);
1077 if (q_data_dst->fourcc == V4L2_PIX_FMT_YVU420) {
1078 /* Switch Cr and Cb for YVU420 format */
1079 picture_cr = picture_y + stridey * height;
1080 picture_cb = picture_cr + stridey / 2 * height / 2;
1081 } else {
1082 picture_cb = picture_y + stridey * height;
1083 picture_cr = picture_cb + stridey / 2 * height / 2;
1084 }
1085 coda_write(dev, picture_y, CODA_CMD_DEC_PIC_ROT_ADDR_Y);
1086 coda_write(dev, picture_cb, CODA_CMD_DEC_PIC_ROT_ADDR_CB);
1087 coda_write(dev, picture_cr, CODA_CMD_DEC_PIC_ROT_ADDR_CR);
1088 coda_write(dev, stridey, CODA_CMD_DEC_PIC_ROT_STRIDE);
1089 coda_write(dev, CODA_ROT_MIR_ENABLE | ctx->params.rot_mode,
1090 CODA_CMD_DEC_PIC_ROT_MODE);
1091
1092 switch (dev->devtype->product) {
1093 case CODA_DX6:
1094 /* TBD */
1095 case CODA_7541:
1096 coda_write(dev, CODA_PRE_SCAN_EN, CODA_CMD_DEC_PIC_OPTION);
1097 break;
1098 }
1099
1100 coda_write(dev, 0, CODA_CMD_DEC_PIC_SKIP_NUM);
1101
1102 coda_write(dev, 0, CODA_CMD_DEC_PIC_BB_START);
1103 coda_write(dev, 0, CODA_CMD_DEC_PIC_START_BYTE);
1104
1105 return 0;
1106 }
1107
1108 static void coda_prepare_encode(struct coda_ctx *ctx)
1109 {
1110 struct coda_q_data *q_data_src, *q_data_dst;
1111 struct vb2_buffer *src_buf, *dst_buf;
1112 struct coda_dev *dev = ctx->dev;
1113 int force_ipicture;
1114 int quant_param = 0;
1115 u32 picture_y, picture_cb, picture_cr;
1116 u32 pic_stream_buffer_addr, pic_stream_buffer_size;
1117 u32 dst_fourcc;
1118
1119 src_buf = v4l2_m2m_next_src_buf(ctx->m2m_ctx);
1120 dst_buf = v4l2_m2m_next_dst_buf(ctx->m2m_ctx);
1121 q_data_src = get_q_data(ctx, V4L2_BUF_TYPE_VIDEO_OUTPUT);
1122 q_data_dst = get_q_data(ctx, V4L2_BUF_TYPE_VIDEO_CAPTURE);
1123 dst_fourcc = q_data_dst->fourcc;
1124
1125 src_buf->v4l2_buf.sequence = ctx->osequence;
1126 dst_buf->v4l2_buf.sequence = ctx->osequence;
1127 ctx->osequence++;
1128
1129 /*
1130 * Workaround coda firmware BUG that only marks the first
1131 * frame as IDR. This is a problem for some decoders that can't
1132 * recover when a frame is lost.
1133 */
1134 if (src_buf->v4l2_buf.sequence % ctx->params.gop_size) {
1135 src_buf->v4l2_buf.flags |= V4L2_BUF_FLAG_PFRAME;
1136 src_buf->v4l2_buf.flags &= ~V4L2_BUF_FLAG_KEYFRAME;
1137 } else {
1138 src_buf->v4l2_buf.flags |= V4L2_BUF_FLAG_KEYFRAME;
1139 src_buf->v4l2_buf.flags &= ~V4L2_BUF_FLAG_PFRAME;
1140 }
1141
1142 /*
1143 * Copy headers at the beginning of the first frame for H.264 only.
1144 * In MPEG4 they are already copied by the coda.
1145 */
1146 if (src_buf->v4l2_buf.sequence == 0) {
1147 pic_stream_buffer_addr =
1148 vb2_dma_contig_plane_dma_addr(dst_buf, 0) +
1149 ctx->vpu_header_size[0] +
1150 ctx->vpu_header_size[1] +
1151 ctx->vpu_header_size[2];
1152 pic_stream_buffer_size = CODA_MAX_FRAME_SIZE -
1153 ctx->vpu_header_size[0] -
1154 ctx->vpu_header_size[1] -
1155 ctx->vpu_header_size[2];
1156 memcpy(vb2_plane_vaddr(dst_buf, 0),
1157 &ctx->vpu_header[0][0], ctx->vpu_header_size[0]);
1158 memcpy(vb2_plane_vaddr(dst_buf, 0) + ctx->vpu_header_size[0],
1159 &ctx->vpu_header[1][0], ctx->vpu_header_size[1]);
1160 memcpy(vb2_plane_vaddr(dst_buf, 0) + ctx->vpu_header_size[0] +
1161 ctx->vpu_header_size[1], &ctx->vpu_header[2][0],
1162 ctx->vpu_header_size[2]);
1163 } else {
1164 pic_stream_buffer_addr =
1165 vb2_dma_contig_plane_dma_addr(dst_buf, 0);
1166 pic_stream_buffer_size = CODA_MAX_FRAME_SIZE;
1167 }
1168
1169 if (src_buf->v4l2_buf.flags & V4L2_BUF_FLAG_KEYFRAME) {
1170 force_ipicture = 1;
1171 switch (dst_fourcc) {
1172 case V4L2_PIX_FMT_H264:
1173 quant_param = ctx->params.h264_intra_qp;
1174 break;
1175 case V4L2_PIX_FMT_MPEG4:
1176 quant_param = ctx->params.mpeg4_intra_qp;
1177 break;
1178 default:
1179 v4l2_warn(&ctx->dev->v4l2_dev,
1180 "cannot set intra qp, fmt not supported\n");
1181 break;
1182 }
1183 } else {
1184 force_ipicture = 0;
1185 switch (dst_fourcc) {
1186 case V4L2_PIX_FMT_H264:
1187 quant_param = ctx->params.h264_inter_qp;
1188 break;
1189 case V4L2_PIX_FMT_MPEG4:
1190 quant_param = ctx->params.mpeg4_inter_qp;
1191 break;
1192 default:
1193 v4l2_warn(&ctx->dev->v4l2_dev,
1194 "cannot set inter qp, fmt not supported\n");
1195 break;
1196 }
1197 }
1198
1199 /* submit */
1200 coda_write(dev, CODA_ROT_MIR_ENABLE | ctx->params.rot_mode, CODA_CMD_ENC_PIC_ROT_MODE);
1201 coda_write(dev, quant_param, CODA_CMD_ENC_PIC_QS);
1202
1203
1204 picture_y = vb2_dma_contig_plane_dma_addr(src_buf, 0);
1205 switch (q_data_src->fourcc) {
1206 case V4L2_PIX_FMT_YVU420:
1207 /* Switch Cb and Cr for YVU420 format */
1208 picture_cr = picture_y + q_data_src->width * q_data_src->height;
1209 picture_cb = picture_cr + q_data_src->width / 2 *
1210 q_data_src->height / 2;
1211 break;
1212 case V4L2_PIX_FMT_YUV420:
1213 default:
1214 picture_cb = picture_y + q_data_src->width * q_data_src->height;
1215 picture_cr = picture_cb + q_data_src->width / 2 *
1216 q_data_src->height / 2;
1217 break;
1218 }
1219
1220 coda_write(dev, picture_y, CODA_CMD_ENC_PIC_SRC_ADDR_Y);
1221 coda_write(dev, picture_cb, CODA_CMD_ENC_PIC_SRC_ADDR_CB);
1222 coda_write(dev, picture_cr, CODA_CMD_ENC_PIC_SRC_ADDR_CR);
1223 coda_write(dev, force_ipicture << 1 & 0x2,
1224 CODA_CMD_ENC_PIC_OPTION);
1225
1226 coda_write(dev, pic_stream_buffer_addr, CODA_CMD_ENC_PIC_BB_START);
1227 coda_write(dev, pic_stream_buffer_size / 1024,
1228 CODA_CMD_ENC_PIC_BB_SIZE);
1229 }
1230
1231 static void coda_device_run(void *m2m_priv)
1232 {
1233 struct coda_ctx *ctx = m2m_priv;
1234 struct coda_dev *dev = ctx->dev;
1235 int ret;
1236
1237 mutex_lock(&ctx->buffer_mutex);
1238
1239 /*
1240 * If streamoff dequeued all buffers before we could get the lock,
1241 * just bail out immediately.
1242 */
1243 if ((!v4l2_m2m_num_src_bufs_ready(ctx->m2m_ctx) &&
1244 ctx->inst_type != CODA_INST_DECODER) ||
1245 !v4l2_m2m_num_dst_bufs_ready(ctx->m2m_ctx)) {
1246 v4l2_dbg(1, coda_debug, &dev->v4l2_dev,
1247 "%d: device_run without buffers\n", ctx->idx);
1248 mutex_unlock(&ctx->buffer_mutex);
1249 schedule_work(&ctx->skip_run);
1250 return;
1251 }
1252
1253 mutex_lock(&dev->coda_mutex);
1254
1255 if (ctx->inst_type == CODA_INST_DECODER) {
1256 ret = coda_prepare_decode(ctx);
1257 if (ret < 0) {
1258 mutex_unlock(&dev->coda_mutex);
1259 mutex_unlock(&ctx->buffer_mutex);
1260 /* job_finish scheduled by prepare_decode */
1261 return;
1262 }
1263 } else {
1264 coda_prepare_encode(ctx);
1265 }
1266
1267 if (dev->devtype->product != CODA_DX6)
1268 coda_write(dev, ctx->iram_info.axi_sram_use,
1269 CODA7_REG_BIT_AXI_SRAM_USE);
1270
1271 /* 1 second timeout in case CODA locks up */
1272 schedule_delayed_work(&dev->timeout, HZ);
1273
1274 if (ctx->inst_type == CODA_INST_DECODER)
1275 coda_kfifo_sync_to_device_full(ctx);
1276 coda_command_async(ctx, CODA_COMMAND_PIC_RUN);
1277 }
1278
1279 static int coda_job_ready(void *m2m_priv)
1280 {
1281 struct coda_ctx *ctx = m2m_priv;
1282
1283 /*
1284 * For both 'P' and 'key' frame cases 1 picture
1285 * and 1 frame are needed. In the decoder case,
1286 * the compressed frame can be in the bitstream.
1287 */
1288 if (!v4l2_m2m_num_src_bufs_ready(ctx->m2m_ctx) &&
1289 ctx->inst_type != CODA_INST_DECODER) {
1290 v4l2_dbg(1, coda_debug, &ctx->dev->v4l2_dev,
1291 "not ready: not enough video buffers.\n");
1292 return 0;
1293 }
1294
1295 if (!v4l2_m2m_num_dst_bufs_ready(ctx->m2m_ctx)) {
1296 v4l2_dbg(1, coda_debug, &ctx->dev->v4l2_dev,
1297 "not ready: not enough video capture buffers.\n");
1298 return 0;
1299 }
1300
1301 if (ctx->prescan_failed ||
1302 ((ctx->inst_type == CODA_INST_DECODER) &&
1303 (coda_get_bitstream_payload(ctx) < 512) &&
1304 !(ctx->bit_stream_param & CODA_BIT_STREAM_END_FLAG))) {
1305 v4l2_dbg(1, coda_debug, &ctx->dev->v4l2_dev,
1306 "%d: not ready: not enough bitstream data.\n",
1307 ctx->idx);
1308 return 0;
1309 }
1310
1311 if (ctx->aborting) {
1312 v4l2_dbg(1, coda_debug, &ctx->dev->v4l2_dev,
1313 "not ready: aborting\n");
1314 return 0;
1315 }
1316
1317 v4l2_dbg(1, coda_debug, &ctx->dev->v4l2_dev,
1318 "job ready\n");
1319 return 1;
1320 }
1321
1322 static void coda_job_abort(void *priv)
1323 {
1324 struct coda_ctx *ctx = priv;
1325
1326 ctx->aborting = 1;
1327
1328 v4l2_dbg(1, coda_debug, &ctx->dev->v4l2_dev,
1329 "Aborting task\n");
1330 }
1331
1332 static void coda_lock(void *m2m_priv)
1333 {
1334 struct coda_ctx *ctx = m2m_priv;
1335 struct coda_dev *pcdev = ctx->dev;
1336 mutex_lock(&pcdev->dev_mutex);
1337 }
1338
1339 static void coda_unlock(void *m2m_priv)
1340 {
1341 struct coda_ctx *ctx = m2m_priv;
1342 struct coda_dev *pcdev = ctx->dev;
1343 mutex_unlock(&pcdev->dev_mutex);
1344 }
1345
1346 static struct v4l2_m2m_ops coda_m2m_ops = {
1347 .device_run = coda_device_run,
1348 .job_ready = coda_job_ready,
1349 .job_abort = coda_job_abort,
1350 .lock = coda_lock,
1351 .unlock = coda_unlock,
1352 };
1353
1354 static void set_default_params(struct coda_ctx *ctx)
1355 {
1356 int max_w;
1357 int max_h;
1358
1359 ctx->codec = &ctx->dev->devtype->codecs[0];
1360 max_w = ctx->codec->max_w;
1361 max_h = ctx->codec->max_h;
1362
1363 ctx->params.codec_mode = CODA_MODE_INVALID;
1364 ctx->colorspace = V4L2_COLORSPACE_REC709;
1365 ctx->params.framerate = 30;
1366 ctx->aborting = 0;
1367
1368 /* Default formats for output and input queues */
1369 ctx->q_data[V4L2_M2M_SRC].fourcc = ctx->codec->src_fourcc;
1370 ctx->q_data[V4L2_M2M_DST].fourcc = ctx->codec->dst_fourcc;
1371 ctx->q_data[V4L2_M2M_SRC].width = max_w;
1372 ctx->q_data[V4L2_M2M_SRC].height = max_h;
1373 ctx->q_data[V4L2_M2M_SRC].sizeimage = (max_w * max_h * 3) / 2;
1374 ctx->q_data[V4L2_M2M_DST].width = max_w;
1375 ctx->q_data[V4L2_M2M_DST].height = max_h;
1376 ctx->q_data[V4L2_M2M_DST].sizeimage = CODA_MAX_FRAME_SIZE;
1377 }
1378
1379 /*
1380 * Queue operations
1381 */
1382 static int coda_queue_setup(struct vb2_queue *vq,
1383 const struct v4l2_format *fmt,
1384 unsigned int *nbuffers, unsigned int *nplanes,
1385 unsigned int sizes[], void *alloc_ctxs[])
1386 {
1387 struct coda_ctx *ctx = vb2_get_drv_priv(vq);
1388 struct coda_q_data *q_data;
1389 unsigned int size;
1390
1391 q_data = get_q_data(ctx, vq->type);
1392 size = q_data->sizeimage;
1393
1394 *nplanes = 1;
1395 sizes[0] = size;
1396
1397 alloc_ctxs[0] = ctx->dev->alloc_ctx;
1398
1399 v4l2_dbg(1, coda_debug, &ctx->dev->v4l2_dev,
1400 "get %d buffer(s) of size %d each.\n", *nbuffers, size);
1401
1402 return 0;
1403 }
1404
1405 static int coda_buf_prepare(struct vb2_buffer *vb)
1406 {
1407 struct coda_ctx *ctx = vb2_get_drv_priv(vb->vb2_queue);
1408 struct coda_q_data *q_data;
1409
1410 q_data = get_q_data(ctx, vb->vb2_queue->type);
1411
1412 if (vb2_plane_size(vb, 0) < q_data->sizeimage) {
1413 v4l2_warn(&ctx->dev->v4l2_dev,
1414 "%s data will not fit into plane (%lu < %lu)\n",
1415 __func__, vb2_plane_size(vb, 0),
1416 (long)q_data->sizeimage);
1417 return -EINVAL;
1418 }
1419
1420 return 0;
1421 }
1422
1423 static void coda_buf_queue(struct vb2_buffer *vb)
1424 {
1425 struct coda_ctx *ctx = vb2_get_drv_priv(vb->vb2_queue);
1426 struct coda_q_data *q_data;
1427
1428 q_data = get_q_data(ctx, vb->vb2_queue->type);
1429
1430 /*
1431 * In the decoder case, immediately try to copy the buffer into the
1432 * bitstream ringbuffer and mark it as ready to be dequeued.
1433 */
1434 if (q_data->fourcc == V4L2_PIX_FMT_H264 &&
1435 vb->vb2_queue->type == V4L2_BUF_TYPE_VIDEO_OUTPUT) {
1436 /*
1437 * For backwards compatibility, queuing an empty buffer marks
1438 * the stream end
1439 */
1440 if (vb2_get_plane_payload(vb, 0) == 0)
1441 ctx->bit_stream_param |= CODA_BIT_STREAM_END_FLAG;
1442 mutex_lock(&ctx->bitstream_mutex);
1443 v4l2_m2m_buf_queue(ctx->m2m_ctx, vb);
1444 coda_fill_bitstream(ctx);
1445 mutex_unlock(&ctx->bitstream_mutex);
1446 } else {
1447 v4l2_m2m_buf_queue(ctx->m2m_ctx, vb);
1448 }
1449 }
1450
1451 static void coda_wait_prepare(struct vb2_queue *q)
1452 {
1453 struct coda_ctx *ctx = vb2_get_drv_priv(q);
1454 coda_unlock(ctx);
1455 }
1456
1457 static void coda_wait_finish(struct vb2_queue *q)
1458 {
1459 struct coda_ctx *ctx = vb2_get_drv_priv(q);
1460 coda_lock(ctx);
1461 }
1462
1463 static void coda_parabuf_write(struct coda_ctx *ctx, int index, u32 value)
1464 {
1465 struct coda_dev *dev = ctx->dev;
1466 u32 *p = ctx->parabuf.vaddr;
1467
1468 if (dev->devtype->product == CODA_DX6)
1469 p[index] = value;
1470 else
1471 p[index ^ 1] = value;
1472 }
1473
1474 static int coda_alloc_aux_buf(struct coda_dev *dev,
1475 struct coda_aux_buf *buf, size_t size)
1476 {
1477 buf->vaddr = dma_alloc_coherent(&dev->plat_dev->dev, size, &buf->paddr,
1478 GFP_KERNEL);
1479 if (!buf->vaddr)
1480 return -ENOMEM;
1481
1482 buf->size = size;
1483
1484 return 0;
1485 }
1486
1487 static inline int coda_alloc_context_buf(struct coda_ctx *ctx,
1488 struct coda_aux_buf *buf, size_t size)
1489 {
1490 return coda_alloc_aux_buf(ctx->dev, buf, size);
1491 }
1492
1493 static void coda_free_aux_buf(struct coda_dev *dev,
1494 struct coda_aux_buf *buf)
1495 {
1496 if (buf->vaddr) {
1497 dma_free_coherent(&dev->plat_dev->dev, buf->size,
1498 buf->vaddr, buf->paddr);
1499 buf->vaddr = NULL;
1500 buf->size = 0;
1501 }
1502 }
1503
1504 static void coda_free_framebuffers(struct coda_ctx *ctx)
1505 {
1506 int i;
1507
1508 for (i = 0; i < CODA_MAX_FRAMEBUFFERS; i++)
1509 coda_free_aux_buf(ctx->dev, &ctx->internal_frames[i]);
1510 }
1511
1512 static int coda_alloc_framebuffers(struct coda_ctx *ctx, struct coda_q_data *q_data, u32 fourcc)
1513 {
1514 struct coda_dev *dev = ctx->dev;
1515 int height = q_data->height;
1516 dma_addr_t paddr;
1517 int ysize;
1518 int ret;
1519 int i;
1520
1521 if (ctx->codec && ctx->codec->src_fourcc == V4L2_PIX_FMT_H264)
1522 height = round_up(height, 16);
1523 ysize = round_up(q_data->width, 8) * height;
1524
1525 /* Allocate frame buffers */
1526 for (i = 0; i < ctx->num_internal_frames; i++) {
1527 size_t size;
1528
1529 size = q_data->sizeimage;
1530 if (ctx->codec->src_fourcc == V4L2_PIX_FMT_H264 &&
1531 dev->devtype->product != CODA_DX6)
1532 ctx->internal_frames[i].size += ysize/4;
1533 ret = coda_alloc_context_buf(ctx, &ctx->internal_frames[i], size);
1534 if (ret < 0) {
1535 coda_free_framebuffers(ctx);
1536 return ret;
1537 }
1538 }
1539
1540 /* Register frame buffers in the parameter buffer */
1541 for (i = 0; i < ctx->num_internal_frames; i++) {
1542 paddr = ctx->internal_frames[i].paddr;
1543 coda_parabuf_write(ctx, i * 3 + 0, paddr); /* Y */
1544 coda_parabuf_write(ctx, i * 3 + 1, paddr + ysize); /* Cb */
1545 coda_parabuf_write(ctx, i * 3 + 2, paddr + ysize + ysize/4); /* Cr */
1546
1547 /* mvcol buffer for h.264 */
1548 if (ctx->codec->src_fourcc == V4L2_PIX_FMT_H264 &&
1549 dev->devtype->product != CODA_DX6)
1550 coda_parabuf_write(ctx, 96 + i,
1551 ctx->internal_frames[i].paddr +
1552 ysize + ysize/4 + ysize/4);
1553 }
1554
1555 /* mvcol buffer for mpeg4 */
1556 if ((dev->devtype->product != CODA_DX6) &&
1557 (ctx->codec->src_fourcc == V4L2_PIX_FMT_MPEG4))
1558 coda_parabuf_write(ctx, 97, ctx->internal_frames[i].paddr +
1559 ysize + ysize/4 + ysize/4);
1560
1561 return 0;
1562 }
1563
1564 static int coda_h264_padding(int size, char *p)
1565 {
1566 int nal_size;
1567 int diff;
1568
1569 diff = size - (size & ~0x7);
1570 if (diff == 0)
1571 return 0;
1572
1573 nal_size = coda_filler_size[diff];
1574 memcpy(p, coda_filler_nal, nal_size);
1575
1576 /* Add rbsp stop bit and trailing at the end */
1577 *(p + nal_size - 1) = 0x80;
1578
1579 return nal_size;
1580 }
1581
1582 static void coda_setup_iram(struct coda_ctx *ctx)
1583 {
1584 struct coda_iram_info *iram_info = &ctx->iram_info;
1585 struct coda_dev *dev = ctx->dev;
1586 int ipacdc_size;
1587 int bitram_size;
1588 int dbk_size;
1589 int ovl_size;
1590 int mb_width;
1591 int me_size;
1592 int size;
1593
1594 memset(iram_info, 0, sizeof(*iram_info));
1595 size = dev->iram_size;
1596
1597 if (dev->devtype->product == CODA_DX6)
1598 return;
1599
1600 if (ctx->inst_type == CODA_INST_ENCODER) {
1601 struct coda_q_data *q_data_src;
1602
1603 q_data_src = get_q_data(ctx, V4L2_BUF_TYPE_VIDEO_OUTPUT);
1604 mb_width = DIV_ROUND_UP(q_data_src->width, 16);
1605
1606 /* Prioritize in case IRAM is too small for everything */
1607 me_size = round_up(round_up(q_data_src->width, 16) * 36 + 2048,
1608 1024);
1609 iram_info->search_ram_size = me_size;
1610 if (size >= iram_info->search_ram_size) {
1611 if (dev->devtype->product == CODA_7541)
1612 iram_info->axi_sram_use |= CODA7_USE_HOST_ME_ENABLE;
1613 iram_info->search_ram_paddr = dev->iram_paddr;
1614 size -= iram_info->search_ram_size;
1615 } else {
1616 pr_err("IRAM is smaller than the search ram size\n");
1617 goto out;
1618 }
1619
1620 /* Only H.264BP and H.263P3 are considered */
1621 dbk_size = round_up(128 * mb_width, 1024);
1622 if (size >= dbk_size) {
1623 iram_info->axi_sram_use |= CODA7_USE_HOST_DBK_ENABLE;
1624 iram_info->buf_dbk_y_use = dev->iram_paddr +
1625 iram_info->search_ram_size;
1626 iram_info->buf_dbk_c_use = iram_info->buf_dbk_y_use +
1627 dbk_size / 2;
1628 size -= dbk_size;
1629 } else {
1630 goto out;
1631 }
1632
1633 bitram_size = round_up(128 * mb_width, 1024);
1634 if (size >= bitram_size) {
1635 iram_info->axi_sram_use |= CODA7_USE_HOST_BIT_ENABLE;
1636 iram_info->buf_bit_use = iram_info->buf_dbk_c_use +
1637 dbk_size / 2;
1638 size -= bitram_size;
1639 } else {
1640 goto out;
1641 }
1642
1643 ipacdc_size = round_up(128 * mb_width, 1024);
1644 if (size >= ipacdc_size) {
1645 iram_info->axi_sram_use |= CODA7_USE_HOST_IP_ENABLE;
1646 iram_info->buf_ip_ac_dc_use = iram_info->buf_bit_use +
1647 bitram_size;
1648 size -= ipacdc_size;
1649 }
1650
1651 /* OVL and BTP disabled for encoder */
1652 } else if (ctx->inst_type == CODA_INST_DECODER) {
1653 struct coda_q_data *q_data_dst;
1654 int mb_height;
1655
1656 q_data_dst = get_q_data(ctx, V4L2_BUF_TYPE_VIDEO_CAPTURE);
1657 mb_width = DIV_ROUND_UP(q_data_dst->width, 16);
1658 mb_height = DIV_ROUND_UP(q_data_dst->height, 16);
1659
1660 dbk_size = round_up(256 * mb_width, 1024);
1661 if (size >= dbk_size) {
1662 iram_info->axi_sram_use |= CODA7_USE_HOST_DBK_ENABLE;
1663 iram_info->buf_dbk_y_use = dev->iram_paddr;
1664 iram_info->buf_dbk_c_use = dev->iram_paddr +
1665 dbk_size / 2;
1666 size -= dbk_size;
1667 } else {
1668 goto out;
1669 }
1670
1671 bitram_size = round_up(128 * mb_width, 1024);
1672 if (size >= bitram_size) {
1673 iram_info->axi_sram_use |= CODA7_USE_HOST_BIT_ENABLE;
1674 iram_info->buf_bit_use = iram_info->buf_dbk_c_use +
1675 dbk_size / 2;
1676 size -= bitram_size;
1677 } else {
1678 goto out;
1679 }
1680
1681 ipacdc_size = round_up(128 * mb_width, 1024);
1682 if (size >= ipacdc_size) {
1683 iram_info->axi_sram_use |= CODA7_USE_HOST_IP_ENABLE;
1684 iram_info->buf_ip_ac_dc_use = iram_info->buf_bit_use +
1685 bitram_size;
1686 size -= ipacdc_size;
1687 } else {
1688 goto out;
1689 }
1690
1691 ovl_size = round_up(80 * mb_width, 1024);
1692 }
1693
1694 out:
1695 switch (dev->devtype->product) {
1696 case CODA_DX6:
1697 break;
1698 case CODA_7541:
1699 /* i.MX53 uses secondary AXI for IRAM access */
1700 if (iram_info->axi_sram_use & CODA7_USE_HOST_BIT_ENABLE)
1701 iram_info->axi_sram_use |= CODA7_USE_BIT_ENABLE;
1702 if (iram_info->axi_sram_use & CODA7_USE_HOST_IP_ENABLE)
1703 iram_info->axi_sram_use |= CODA7_USE_IP_ENABLE;
1704 if (iram_info->axi_sram_use & CODA7_USE_HOST_DBK_ENABLE)
1705 iram_info->axi_sram_use |= CODA7_USE_DBK_ENABLE;
1706 if (iram_info->axi_sram_use & CODA7_USE_HOST_OVL_ENABLE)
1707 iram_info->axi_sram_use |= CODA7_USE_OVL_ENABLE;
1708 if (iram_info->axi_sram_use & CODA7_USE_HOST_ME_ENABLE)
1709 iram_info->axi_sram_use |= CODA7_USE_ME_ENABLE;
1710 }
1711
1712 if (!(iram_info->axi_sram_use & CODA7_USE_HOST_IP_ENABLE))
1713 v4l2_dbg(1, coda_debug, &ctx->dev->v4l2_dev,
1714 "IRAM smaller than needed\n");
1715
1716 if (dev->devtype->product == CODA_7541) {
1717 /* TODO - Enabling these causes picture errors on CODA7541 */
1718 if (ctx->inst_type == CODA_INST_DECODER) {
1719 /* fw 1.4.50 */
1720 iram_info->axi_sram_use &= ~(CODA7_USE_HOST_IP_ENABLE |
1721 CODA7_USE_IP_ENABLE);
1722 } else {
1723 /* fw 13.4.29 */
1724 iram_info->axi_sram_use &= ~(CODA7_USE_HOST_IP_ENABLE |
1725 CODA7_USE_HOST_DBK_ENABLE |
1726 CODA7_USE_IP_ENABLE |
1727 CODA7_USE_DBK_ENABLE);
1728 }
1729 }
1730 }
1731
1732 static void coda_free_context_buffers(struct coda_ctx *ctx)
1733 {
1734 struct coda_dev *dev = ctx->dev;
1735
1736 coda_free_aux_buf(dev, &ctx->slicebuf);
1737 coda_free_aux_buf(dev, &ctx->psbuf);
1738 if (dev->devtype->product != CODA_DX6)
1739 coda_free_aux_buf(dev, &ctx->workbuf);
1740 }
1741
1742 static int coda_alloc_context_buffers(struct coda_ctx *ctx,
1743 struct coda_q_data *q_data)
1744 {
1745 struct coda_dev *dev = ctx->dev;
1746 size_t size;
1747 int ret;
1748
1749 switch (dev->devtype->product) {
1750 case CODA_7541:
1751 size = CODA7_WORK_BUF_SIZE;
1752 break;
1753 default:
1754 return 0;
1755 }
1756
1757 if (ctx->psbuf.vaddr) {
1758 v4l2_err(&dev->v4l2_dev, "psmembuf still allocated\n");
1759 return -EBUSY;
1760 }
1761 if (ctx->slicebuf.vaddr) {
1762 v4l2_err(&dev->v4l2_dev, "slicebuf still allocated\n");
1763 return -EBUSY;
1764 }
1765 if (ctx->workbuf.vaddr) {
1766 v4l2_err(&dev->v4l2_dev, "context buffer still allocated\n");
1767 ret = -EBUSY;
1768 return -ENOMEM;
1769 }
1770
1771 if (q_data->fourcc == V4L2_PIX_FMT_H264) {
1772 /* worst case slice size */
1773 size = (DIV_ROUND_UP(q_data->width, 16) *
1774 DIV_ROUND_UP(q_data->height, 16)) * 3200 / 8 + 512;
1775 ret = coda_alloc_context_buf(ctx, &ctx->slicebuf, size);
1776 if (ret < 0) {
1777 v4l2_err(&dev->v4l2_dev, "failed to allocate %d byte slice buffer",
1778 ctx->slicebuf.size);
1779 return ret;
1780 }
1781 }
1782
1783 if (dev->devtype->product == CODA_7541) {
1784 ret = coda_alloc_context_buf(ctx, &ctx->psbuf, CODA7_PS_BUF_SIZE);
1785 if (ret < 0) {
1786 v4l2_err(&dev->v4l2_dev, "failed to allocate psmem buffer");
1787 goto err;
1788 }
1789 }
1790
1791 ret = coda_alloc_context_buf(ctx, &ctx->workbuf, size);
1792 if (ret < 0) {
1793 v4l2_err(&dev->v4l2_dev, "failed to allocate %d byte context buffer",
1794 ctx->workbuf.size);
1795 goto err;
1796 }
1797
1798 return 0;
1799
1800 err:
1801 coda_free_context_buffers(ctx);
1802 return ret;
1803 }
1804
1805 static int coda_start_decoding(struct coda_ctx *ctx)
1806 {
1807 struct coda_q_data *q_data_src, *q_data_dst;
1808 u32 bitstream_buf, bitstream_size;
1809 struct coda_dev *dev = ctx->dev;
1810 int width, height;
1811 u32 src_fourcc;
1812 u32 val;
1813 int ret;
1814
1815 /* Start decoding */
1816 q_data_src = get_q_data(ctx, V4L2_BUF_TYPE_VIDEO_OUTPUT);
1817 q_data_dst = get_q_data(ctx, V4L2_BUF_TYPE_VIDEO_CAPTURE);
1818 bitstream_buf = ctx->bitstream.paddr;
1819 bitstream_size = ctx->bitstream.size;
1820 src_fourcc = q_data_src->fourcc;
1821
1822 coda_write(dev, ctx->parabuf.paddr, CODA_REG_BIT_PARA_BUF_ADDR);
1823
1824 /* Update coda bitstream read and write pointers from kfifo */
1825 coda_kfifo_sync_to_device_full(ctx);
1826
1827 ctx->display_idx = -1;
1828 ctx->frm_dis_flg = 0;
1829 coda_write(dev, 0, CODA_REG_BIT_FRM_DIS_FLG(ctx->reg_idx));
1830
1831 coda_write(dev, CODA_BIT_DEC_SEQ_INIT_ESCAPE,
1832 CODA_REG_BIT_BIT_STREAM_PARAM);
1833
1834 coda_write(dev, bitstream_buf, CODA_CMD_DEC_SEQ_BB_START);
1835 coda_write(dev, bitstream_size / 1024, CODA_CMD_DEC_SEQ_BB_SIZE);
1836 val = 0;
1837 if (dev->devtype->product == CODA_7541)
1838 val |= CODA_REORDER_ENABLE;
1839 coda_write(dev, val, CODA_CMD_DEC_SEQ_OPTION);
1840
1841 ctx->params.codec_mode = ctx->codec->mode;
1842 ctx->params.codec_mode_aux = 0;
1843 if (src_fourcc == V4L2_PIX_FMT_H264) {
1844 if (dev->devtype->product == CODA_7541) {
1845 coda_write(dev, ctx->psbuf.paddr,
1846 CODA_CMD_DEC_SEQ_PS_BB_START);
1847 coda_write(dev, (CODA7_PS_BUF_SIZE / 1024),
1848 CODA_CMD_DEC_SEQ_PS_BB_SIZE);
1849 }
1850 }
1851
1852 if (coda_command_sync(ctx, CODA_COMMAND_SEQ_INIT)) {
1853 v4l2_err(&dev->v4l2_dev, "CODA_COMMAND_SEQ_INIT timeout\n");
1854 coda_write(dev, 0, CODA_REG_BIT_BIT_STREAM_PARAM);
1855 return -ETIMEDOUT;
1856 }
1857
1858 /* Update kfifo out pointer from coda bitstream read pointer */
1859 coda_kfifo_sync_from_device(ctx);
1860
1861 coda_write(dev, 0, CODA_REG_BIT_BIT_STREAM_PARAM);
1862
1863 if (coda_read(dev, CODA_RET_DEC_SEQ_SUCCESS) == 0) {
1864 v4l2_err(&dev->v4l2_dev,
1865 "CODA_COMMAND_SEQ_INIT failed, error code = %d\n",
1866 coda_read(dev, CODA_RET_DEC_SEQ_ERR_REASON));
1867 return -EAGAIN;
1868 }
1869
1870 val = coda_read(dev, CODA_RET_DEC_SEQ_SRC_SIZE);
1871 if (dev->devtype->product == CODA_DX6) {
1872 width = (val >> CODADX6_PICWIDTH_OFFSET) & CODADX6_PICWIDTH_MASK;
1873 height = val & CODADX6_PICHEIGHT_MASK;
1874 } else {
1875 width = (val >> CODA7_PICWIDTH_OFFSET) & CODA7_PICWIDTH_MASK;
1876 height = val & CODA7_PICHEIGHT_MASK;
1877 }
1878
1879 if (width > q_data_dst->width || height > q_data_dst->height) {
1880 v4l2_err(&dev->v4l2_dev, "stream is %dx%d, not %dx%d\n",
1881 width, height, q_data_dst->width, q_data_dst->height);
1882 return -EINVAL;
1883 }
1884
1885 width = round_up(width, 16);
1886 height = round_up(height, 16);
1887
1888 v4l2_dbg(1, coda_debug, &dev->v4l2_dev, "%s instance %d now: %dx%d\n",
1889 __func__, ctx->idx, width, height);
1890
1891 ctx->num_internal_frames = coda_read(dev, CODA_RET_DEC_SEQ_FRAME_NEED) + 1;
1892 if (ctx->num_internal_frames > CODA_MAX_FRAMEBUFFERS) {
1893 v4l2_err(&dev->v4l2_dev,
1894 "not enough framebuffers to decode (%d < %d)\n",
1895 CODA_MAX_FRAMEBUFFERS, ctx->num_internal_frames);
1896 return -EINVAL;
1897 }
1898
1899 ret = coda_alloc_framebuffers(ctx, q_data_dst, src_fourcc);
1900 if (ret < 0)
1901 return ret;
1902
1903 /* Tell the decoder how many frame buffers we allocated. */
1904 coda_write(dev, ctx->num_internal_frames, CODA_CMD_SET_FRAME_BUF_NUM);
1905 coda_write(dev, width, CODA_CMD_SET_FRAME_BUF_STRIDE);
1906
1907 if (dev->devtype->product != CODA_DX6) {
1908 /* Set secondary AXI IRAM */
1909 coda_setup_iram(ctx);
1910
1911 coda_write(dev, ctx->iram_info.buf_bit_use,
1912 CODA7_CMD_SET_FRAME_AXI_BIT_ADDR);
1913 coda_write(dev, ctx->iram_info.buf_ip_ac_dc_use,
1914 CODA7_CMD_SET_FRAME_AXI_IPACDC_ADDR);
1915 coda_write(dev, ctx->iram_info.buf_dbk_y_use,
1916 CODA7_CMD_SET_FRAME_AXI_DBKY_ADDR);
1917 coda_write(dev, ctx->iram_info.buf_dbk_c_use,
1918 CODA7_CMD_SET_FRAME_AXI_DBKC_ADDR);
1919 coda_write(dev, ctx->iram_info.buf_ovl_use,
1920 CODA7_CMD_SET_FRAME_AXI_OVL_ADDR);
1921 }
1922
1923 if (src_fourcc == V4L2_PIX_FMT_H264) {
1924 coda_write(dev, ctx->slicebuf.paddr,
1925 CODA_CMD_SET_FRAME_SLICE_BB_START);
1926 coda_write(dev, ctx->slicebuf.size / 1024,
1927 CODA_CMD_SET_FRAME_SLICE_BB_SIZE);
1928 }
1929
1930 if (dev->devtype->product == CODA_7541) {
1931 int max_mb_x = 1920 / 16;
1932 int max_mb_y = 1088 / 16;
1933 int max_mb_num = max_mb_x * max_mb_y;
1934 coda_write(dev, max_mb_num << 16 | max_mb_x << 8 | max_mb_y,
1935 CODA7_CMD_SET_FRAME_MAX_DEC_SIZE);
1936 }
1937
1938 if (coda_command_sync(ctx, CODA_COMMAND_SET_FRAME_BUF)) {
1939 v4l2_err(&ctx->dev->v4l2_dev,
1940 "CODA_COMMAND_SET_FRAME_BUF timeout\n");
1941 return -ETIMEDOUT;
1942 }
1943
1944 return 0;
1945 }
1946
1947 static int coda_encode_header(struct coda_ctx *ctx, struct vb2_buffer *buf,
1948 int header_code, u8 *header, int *size)
1949 {
1950 struct coda_dev *dev = ctx->dev;
1951 int ret;
1952
1953 coda_write(dev, vb2_dma_contig_plane_dma_addr(buf, 0),
1954 CODA_CMD_ENC_HEADER_BB_START);
1955 coda_write(dev, vb2_plane_size(buf, 0), CODA_CMD_ENC_HEADER_BB_SIZE);
1956 coda_write(dev, header_code, CODA_CMD_ENC_HEADER_CODE);
1957 ret = coda_command_sync(ctx, CODA_COMMAND_ENCODE_HEADER);
1958 if (ret < 0) {
1959 v4l2_err(&dev->v4l2_dev, "CODA_COMMAND_ENCODE_HEADER timeout\n");
1960 return ret;
1961 }
1962 *size = coda_read(dev, CODA_REG_BIT_WR_PTR(ctx->reg_idx)) -
1963 coda_read(dev, CODA_CMD_ENC_HEADER_BB_START);
1964 memcpy(header, vb2_plane_vaddr(buf, 0), *size);
1965
1966 return 0;
1967 }
1968
1969 static int coda_start_streaming(struct vb2_queue *q, unsigned int count)
1970 {
1971 struct coda_ctx *ctx = vb2_get_drv_priv(q);
1972 struct v4l2_device *v4l2_dev = &ctx->dev->v4l2_dev;
1973 u32 bitstream_buf, bitstream_size;
1974 struct coda_dev *dev = ctx->dev;
1975 struct coda_q_data *q_data_src, *q_data_dst;
1976 struct vb2_buffer *buf;
1977 u32 dst_fourcc;
1978 u32 value;
1979 int ret = 0;
1980
1981 q_data_src = get_q_data(ctx, V4L2_BUF_TYPE_VIDEO_OUTPUT);
1982 if (q->type == V4L2_BUF_TYPE_VIDEO_OUTPUT) {
1983 if (q_data_src->fourcc == V4L2_PIX_FMT_H264) {
1984 if (coda_get_bitstream_payload(ctx) < 512)
1985 return -EINVAL;
1986 } else {
1987 if (count < 1)
1988 return -EINVAL;
1989 }
1990
1991 ctx->streamon_out = 1;
1992
1993 if (coda_format_is_yuv(q_data_src->fourcc))
1994 ctx->inst_type = CODA_INST_ENCODER;
1995 else
1996 ctx->inst_type = CODA_INST_DECODER;
1997 } else {
1998 if (count < 1)
1999 return -EINVAL;
2000
2001 ctx->streamon_cap = 1;
2002 }
2003
2004 /* Don't start the coda unless both queues are on */
2005 if (!(ctx->streamon_out & ctx->streamon_cap))
2006 return 0;
2007
2008 /* Allow decoder device_run with no new buffers queued */
2009 if (ctx->inst_type == CODA_INST_DECODER)
2010 v4l2_m2m_set_src_buffered(ctx->m2m_ctx, true);
2011
2012 ctx->gopcounter = ctx->params.gop_size - 1;
2013 buf = v4l2_m2m_next_dst_buf(ctx->m2m_ctx);
2014 bitstream_buf = vb2_dma_contig_plane_dma_addr(buf, 0);
2015 q_data_dst = get_q_data(ctx, V4L2_BUF_TYPE_VIDEO_CAPTURE);
2016 bitstream_size = q_data_dst->sizeimage;
2017 dst_fourcc = q_data_dst->fourcc;
2018
2019 ctx->codec = coda_find_codec(ctx->dev, q_data_src->fourcc,
2020 q_data_dst->fourcc);
2021 if (!ctx->codec) {
2022 v4l2_err(v4l2_dev, "couldn't tell instance type.\n");
2023 return -EINVAL;
2024 }
2025
2026 /* Allocate per-instance buffers */
2027 ret = coda_alloc_context_buffers(ctx, q_data_src);
2028 if (ret < 0)
2029 return ret;
2030
2031 if (ctx->inst_type == CODA_INST_DECODER) {
2032 mutex_lock(&dev->coda_mutex);
2033 ret = coda_start_decoding(ctx);
2034 mutex_unlock(&dev->coda_mutex);
2035 if (ret == -EAGAIN) {
2036 return 0;
2037 } else if (ret < 0) {
2038 return ret;
2039 } else {
2040 ctx->initialized = 1;
2041 return 0;
2042 }
2043 }
2044
2045 if (!coda_is_initialized(dev)) {
2046 v4l2_err(v4l2_dev, "coda is not initialized.\n");
2047 return -EFAULT;
2048 }
2049
2050 mutex_lock(&dev->coda_mutex);
2051
2052 coda_write(dev, ctx->parabuf.paddr, CODA_REG_BIT_PARA_BUF_ADDR);
2053 coda_write(dev, bitstream_buf, CODA_REG_BIT_RD_PTR(ctx->reg_idx));
2054 coda_write(dev, bitstream_buf, CODA_REG_BIT_WR_PTR(ctx->reg_idx));
2055 switch (dev->devtype->product) {
2056 case CODA_DX6:
2057 coda_write(dev, CODADX6_STREAM_BUF_DYNALLOC_EN |
2058 CODADX6_STREAM_BUF_PIC_RESET, CODA_REG_BIT_STREAM_CTRL);
2059 break;
2060 default:
2061 coda_write(dev, CODA7_STREAM_BUF_DYNALLOC_EN |
2062 CODA7_STREAM_BUF_PIC_RESET, CODA_REG_BIT_STREAM_CTRL);
2063 }
2064
2065 if (dev->devtype->product == CODA_DX6) {
2066 /* Configure the coda */
2067 coda_write(dev, dev->iram_paddr, CODADX6_REG_BIT_SEARCH_RAM_BASE_ADDR);
2068 }
2069
2070 /* Could set rotation here if needed */
2071 switch (dev->devtype->product) {
2072 case CODA_DX6:
2073 value = (q_data_src->width & CODADX6_PICWIDTH_MASK) << CODADX6_PICWIDTH_OFFSET;
2074 value |= (q_data_src->height & CODADX6_PICHEIGHT_MASK) << CODA_PICHEIGHT_OFFSET;
2075 break;
2076 default:
2077 value = (q_data_src->width & CODA7_PICWIDTH_MASK) << CODA7_PICWIDTH_OFFSET;
2078 value |= (q_data_src->height & CODA7_PICHEIGHT_MASK) << CODA_PICHEIGHT_OFFSET;
2079 }
2080 coda_write(dev, value, CODA_CMD_ENC_SEQ_SRC_SIZE);
2081 coda_write(dev, ctx->params.framerate,
2082 CODA_CMD_ENC_SEQ_SRC_F_RATE);
2083
2084 ctx->params.codec_mode = ctx->codec->mode;
2085 switch (dst_fourcc) {
2086 case V4L2_PIX_FMT_MPEG4:
2087 coda_write(dev, CODA_STD_MPEG4, CODA_CMD_ENC_SEQ_COD_STD);
2088 coda_write(dev, 0, CODA_CMD_ENC_SEQ_MP4_PARA);
2089 break;
2090 case V4L2_PIX_FMT_H264:
2091 coda_write(dev, CODA_STD_H264, CODA_CMD_ENC_SEQ_COD_STD);
2092 coda_write(dev, 0, CODA_CMD_ENC_SEQ_264_PARA);
2093 break;
2094 default:
2095 v4l2_err(v4l2_dev,
2096 "dst format (0x%08x) invalid.\n", dst_fourcc);
2097 ret = -EINVAL;
2098 goto out;
2099 }
2100
2101 switch (ctx->params.slice_mode) {
2102 case V4L2_MPEG_VIDEO_MULTI_SLICE_MODE_SINGLE:
2103 value = 0;
2104 break;
2105 case V4L2_MPEG_VIDEO_MULTI_SICE_MODE_MAX_MB:
2106 value = (ctx->params.slice_max_mb & CODA_SLICING_SIZE_MASK) << CODA_SLICING_SIZE_OFFSET;
2107 value |= (1 & CODA_SLICING_UNIT_MASK) << CODA_SLICING_UNIT_OFFSET;
2108 value |= 1 & CODA_SLICING_MODE_MASK;
2109 break;
2110 case V4L2_MPEG_VIDEO_MULTI_SICE_MODE_MAX_BYTES:
2111 value = (ctx->params.slice_max_bits & CODA_SLICING_SIZE_MASK) << CODA_SLICING_SIZE_OFFSET;
2112 value |= (0 & CODA_SLICING_UNIT_MASK) << CODA_SLICING_UNIT_OFFSET;
2113 value |= 1 & CODA_SLICING_MODE_MASK;
2114 break;
2115 }
2116 coda_write(dev, value, CODA_CMD_ENC_SEQ_SLICE_MODE);
2117 value = ctx->params.gop_size & CODA_GOP_SIZE_MASK;
2118 coda_write(dev, value, CODA_CMD_ENC_SEQ_GOP_SIZE);
2119
2120 if (ctx->params.bitrate) {
2121 /* Rate control enabled */
2122 value = (ctx->params.bitrate & CODA_RATECONTROL_BITRATE_MASK) << CODA_RATECONTROL_BITRATE_OFFSET;
2123 value |= 1 & CODA_RATECONTROL_ENABLE_MASK;
2124 } else {
2125 value = 0;
2126 }
2127 coda_write(dev, value, CODA_CMD_ENC_SEQ_RC_PARA);
2128
2129 coda_write(dev, 0, CODA_CMD_ENC_SEQ_RC_BUF_SIZE);
2130 coda_write(dev, 0, CODA_CMD_ENC_SEQ_INTRA_REFRESH);
2131
2132 coda_write(dev, bitstream_buf, CODA_CMD_ENC_SEQ_BB_START);
2133 coda_write(dev, bitstream_size / 1024, CODA_CMD_ENC_SEQ_BB_SIZE);
2134
2135 /* set default gamma */
2136 value = (CODA_DEFAULT_GAMMA & CODA_GAMMA_MASK) << CODA_GAMMA_OFFSET;
2137 coda_write(dev, value, CODA_CMD_ENC_SEQ_RC_GAMMA);
2138
2139 if (CODA_DEFAULT_GAMMA > 0) {
2140 if (dev->devtype->product == CODA_DX6)
2141 value = 1 << CODADX6_OPTION_GAMMA_OFFSET;
2142 else
2143 value = 1 << CODA7_OPTION_GAMMA_OFFSET;
2144 } else {
2145 value = 0;
2146 }
2147 coda_write(dev, value, CODA_CMD_ENC_SEQ_OPTION);
2148
2149 coda_setup_iram(ctx);
2150
2151 if (dst_fourcc == V4L2_PIX_FMT_H264) {
2152 if (dev->devtype->product == CODA_DX6) {
2153 value = FMO_SLICE_SAVE_BUF_SIZE << 7;
2154 coda_write(dev, value, CODADX6_CMD_ENC_SEQ_FMO);
2155 } else {
2156 coda_write(dev, ctx->iram_info.search_ram_paddr,
2157 CODA7_CMD_ENC_SEQ_SEARCH_BASE);
2158 coda_write(dev, ctx->iram_info.search_ram_size,
2159 CODA7_CMD_ENC_SEQ_SEARCH_SIZE);
2160 }
2161 }
2162
2163 ret = coda_command_sync(ctx, CODA_COMMAND_SEQ_INIT);
2164 if (ret < 0) {
2165 v4l2_err(v4l2_dev, "CODA_COMMAND_SEQ_INIT timeout\n");
2166 goto out;
2167 }
2168
2169 if (coda_read(dev, CODA_RET_ENC_SEQ_SUCCESS) == 0) {
2170 v4l2_err(v4l2_dev, "CODA_COMMAND_SEQ_INIT failed\n");
2171 ret = -EFAULT;
2172 goto out;
2173 }
2174
2175 ctx->num_internal_frames = 2;
2176 ret = coda_alloc_framebuffers(ctx, q_data_src, dst_fourcc);
2177 if (ret < 0) {
2178 v4l2_err(v4l2_dev, "failed to allocate framebuffers\n");
2179 goto out;
2180 }
2181
2182 coda_write(dev, ctx->num_internal_frames, CODA_CMD_SET_FRAME_BUF_NUM);
2183 coda_write(dev, round_up(q_data_src->width, 8), CODA_CMD_SET_FRAME_BUF_STRIDE);
2184 if (dev->devtype->product == CODA_7541)
2185 coda_write(dev, round_up(q_data_src->width, 8),
2186 CODA7_CMD_SET_FRAME_SOURCE_BUF_STRIDE);
2187 if (dev->devtype->product != CODA_DX6) {
2188 coda_write(dev, ctx->iram_info.buf_bit_use,
2189 CODA7_CMD_SET_FRAME_AXI_BIT_ADDR);
2190 coda_write(dev, ctx->iram_info.buf_ip_ac_dc_use,
2191 CODA7_CMD_SET_FRAME_AXI_IPACDC_ADDR);
2192 coda_write(dev, ctx->iram_info.buf_dbk_y_use,
2193 CODA7_CMD_SET_FRAME_AXI_DBKY_ADDR);
2194 coda_write(dev, ctx->iram_info.buf_dbk_c_use,
2195 CODA7_CMD_SET_FRAME_AXI_DBKC_ADDR);
2196 coda_write(dev, ctx->iram_info.buf_ovl_use,
2197 CODA7_CMD_SET_FRAME_AXI_OVL_ADDR);
2198 }
2199 ret = coda_command_sync(ctx, CODA_COMMAND_SET_FRAME_BUF);
2200 if (ret < 0) {
2201 v4l2_err(v4l2_dev, "CODA_COMMAND_SET_FRAME_BUF timeout\n");
2202 goto out;
2203 }
2204
2205 /* Save stream headers */
2206 buf = v4l2_m2m_next_dst_buf(ctx->m2m_ctx);
2207 switch (dst_fourcc) {
2208 case V4L2_PIX_FMT_H264:
2209 /*
2210 * Get SPS in the first frame and copy it to an
2211 * intermediate buffer.
2212 */
2213 ret = coda_encode_header(ctx, buf, CODA_HEADER_H264_SPS,
2214 &ctx->vpu_header[0][0],
2215 &ctx->vpu_header_size[0]);
2216 if (ret < 0)
2217 goto out;
2218
2219 /*
2220 * Get PPS in the first frame and copy it to an
2221 * intermediate buffer.
2222 */
2223 ret = coda_encode_header(ctx, buf, CODA_HEADER_H264_PPS,
2224 &ctx->vpu_header[1][0],
2225 &ctx->vpu_header_size[1]);
2226 if (ret < 0)
2227 goto out;
2228
2229 /*
2230 * Length of H.264 headers is variable and thus it might not be
2231 * aligned for the coda to append the encoded frame. In that is
2232 * the case a filler NAL must be added to header 2.
2233 */
2234 ctx->vpu_header_size[2] = coda_h264_padding(
2235 (ctx->vpu_header_size[0] +
2236 ctx->vpu_header_size[1]),
2237 ctx->vpu_header[2]);
2238 break;
2239 case V4L2_PIX_FMT_MPEG4:
2240 /*
2241 * Get VOS in the first frame and copy it to an
2242 * intermediate buffer
2243 */
2244 ret = coda_encode_header(ctx, buf, CODA_HEADER_MP4V_VOS,
2245 &ctx->vpu_header[0][0],
2246 &ctx->vpu_header_size[0]);
2247 if (ret < 0)
2248 goto out;
2249
2250 ret = coda_encode_header(ctx, buf, CODA_HEADER_MP4V_VIS,
2251 &ctx->vpu_header[1][0],
2252 &ctx->vpu_header_size[1]);
2253 if (ret < 0)
2254 goto out;
2255
2256 ret = coda_encode_header(ctx, buf, CODA_HEADER_MP4V_VOL,
2257 &ctx->vpu_header[2][0],
2258 &ctx->vpu_header_size[2]);
2259 if (ret < 0)
2260 goto out;
2261 break;
2262 default:
2263 /* No more formats need to save headers at the moment */
2264 break;
2265 }
2266
2267 out:
2268 mutex_unlock(&dev->coda_mutex);
2269 return ret;
2270 }
2271
2272 static int coda_stop_streaming(struct vb2_queue *q)
2273 {
2274 struct coda_ctx *ctx = vb2_get_drv_priv(q);
2275 struct coda_dev *dev = ctx->dev;
2276
2277 if (q->type == V4L2_BUF_TYPE_VIDEO_OUTPUT) {
2278 v4l2_dbg(1, coda_debug, &dev->v4l2_dev,
2279 "%s: output\n", __func__);
2280 ctx->streamon_out = 0;
2281
2282 ctx->bit_stream_param |= CODA_BIT_STREAM_END_FLAG;
2283
2284 ctx->isequence = 0;
2285 } else {
2286 v4l2_dbg(1, coda_debug, &dev->v4l2_dev,
2287 "%s: capture\n", __func__);
2288 ctx->streamon_cap = 0;
2289
2290 ctx->osequence = 0;
2291 }
2292
2293 if (!ctx->streamon_out && !ctx->streamon_cap) {
2294 kfifo_init(&ctx->bitstream_fifo,
2295 ctx->bitstream.vaddr, ctx->bitstream.size);
2296 ctx->runcounter = 0;
2297 }
2298
2299 return 0;
2300 }
2301
2302 static struct vb2_ops coda_qops = {
2303 .queue_setup = coda_queue_setup,
2304 .buf_prepare = coda_buf_prepare,
2305 .buf_queue = coda_buf_queue,
2306 .wait_prepare = coda_wait_prepare,
2307 .wait_finish = coda_wait_finish,
2308 .start_streaming = coda_start_streaming,
2309 .stop_streaming = coda_stop_streaming,
2310 };
2311
2312 static int coda_s_ctrl(struct v4l2_ctrl *ctrl)
2313 {
2314 struct coda_ctx *ctx =
2315 container_of(ctrl->handler, struct coda_ctx, ctrls);
2316
2317 v4l2_dbg(1, coda_debug, &ctx->dev->v4l2_dev,
2318 "s_ctrl: id = %d, val = %d\n", ctrl->id, ctrl->val);
2319
2320 switch (ctrl->id) {
2321 case V4L2_CID_HFLIP:
2322 if (ctrl->val)
2323 ctx->params.rot_mode |= CODA_MIR_HOR;
2324 else
2325 ctx->params.rot_mode &= ~CODA_MIR_HOR;
2326 break;
2327 case V4L2_CID_VFLIP:
2328 if (ctrl->val)
2329 ctx->params.rot_mode |= CODA_MIR_VER;
2330 else
2331 ctx->params.rot_mode &= ~CODA_MIR_VER;
2332 break;
2333 case V4L2_CID_MPEG_VIDEO_BITRATE:
2334 ctx->params.bitrate = ctrl->val / 1000;
2335 break;
2336 case V4L2_CID_MPEG_VIDEO_GOP_SIZE:
2337 ctx->params.gop_size = ctrl->val;
2338 break;
2339 case V4L2_CID_MPEG_VIDEO_H264_I_FRAME_QP:
2340 ctx->params.h264_intra_qp = ctrl->val;
2341 break;
2342 case V4L2_CID_MPEG_VIDEO_H264_P_FRAME_QP:
2343 ctx->params.h264_inter_qp = ctrl->val;
2344 break;
2345 case V4L2_CID_MPEG_VIDEO_MPEG4_I_FRAME_QP:
2346 ctx->params.mpeg4_intra_qp = ctrl->val;
2347 break;
2348 case V4L2_CID_MPEG_VIDEO_MPEG4_P_FRAME_QP:
2349 ctx->params.mpeg4_inter_qp = ctrl->val;
2350 break;
2351 case V4L2_CID_MPEG_VIDEO_MULTI_SLICE_MODE:
2352 ctx->params.slice_mode = ctrl->val;
2353 break;
2354 case V4L2_CID_MPEG_VIDEO_MULTI_SLICE_MAX_MB:
2355 ctx->params.slice_max_mb = ctrl->val;
2356 break;
2357 case V4L2_CID_MPEG_VIDEO_MULTI_SLICE_MAX_BYTES:
2358 ctx->params.slice_max_bits = ctrl->val * 8;
2359 break;
2360 case V4L2_CID_MPEG_VIDEO_HEADER_MODE:
2361 break;
2362 default:
2363 v4l2_dbg(1, coda_debug, &ctx->dev->v4l2_dev,
2364 "Invalid control, id=%d, val=%d\n",
2365 ctrl->id, ctrl->val);
2366 return -EINVAL;
2367 }
2368
2369 return 0;
2370 }
2371
2372 static struct v4l2_ctrl_ops coda_ctrl_ops = {
2373 .s_ctrl = coda_s_ctrl,
2374 };
2375
2376 static int coda_ctrls_setup(struct coda_ctx *ctx)
2377 {
2378 v4l2_ctrl_handler_init(&ctx->ctrls, 9);
2379
2380 v4l2_ctrl_new_std(&ctx->ctrls, &coda_ctrl_ops,
2381 V4L2_CID_HFLIP, 0, 1, 1, 0);
2382 v4l2_ctrl_new_std(&ctx->ctrls, &coda_ctrl_ops,
2383 V4L2_CID_VFLIP, 0, 1, 1, 0);
2384 v4l2_ctrl_new_std(&ctx->ctrls, &coda_ctrl_ops,
2385 V4L2_CID_MPEG_VIDEO_BITRATE, 0, 32767000, 1, 0);
2386 v4l2_ctrl_new_std(&ctx->ctrls, &coda_ctrl_ops,
2387 V4L2_CID_MPEG_VIDEO_GOP_SIZE, 1, 60, 1, 16);
2388 v4l2_ctrl_new_std(&ctx->ctrls, &coda_ctrl_ops,
2389 V4L2_CID_MPEG_VIDEO_H264_I_FRAME_QP, 1, 51, 1, 25);
2390 v4l2_ctrl_new_std(&ctx->ctrls, &coda_ctrl_ops,
2391 V4L2_CID_MPEG_VIDEO_H264_P_FRAME_QP, 1, 51, 1, 25);
2392 v4l2_ctrl_new_std(&ctx->ctrls, &coda_ctrl_ops,
2393 V4L2_CID_MPEG_VIDEO_MPEG4_I_FRAME_QP, 1, 31, 1, 2);
2394 v4l2_ctrl_new_std(&ctx->ctrls, &coda_ctrl_ops,
2395 V4L2_CID_MPEG_VIDEO_MPEG4_P_FRAME_QP, 1, 31, 1, 2);
2396 v4l2_ctrl_new_std_menu(&ctx->ctrls, &coda_ctrl_ops,
2397 V4L2_CID_MPEG_VIDEO_MULTI_SLICE_MODE,
2398 V4L2_MPEG_VIDEO_MULTI_SICE_MODE_MAX_BYTES, 0x0,
2399 V4L2_MPEG_VIDEO_MULTI_SLICE_MODE_SINGLE);
2400 v4l2_ctrl_new_std(&ctx->ctrls, &coda_ctrl_ops,
2401 V4L2_CID_MPEG_VIDEO_MULTI_SLICE_MAX_MB, 1, 0x3fffffff, 1, 1);
2402 v4l2_ctrl_new_std(&ctx->ctrls, &coda_ctrl_ops,
2403 V4L2_CID_MPEG_VIDEO_MULTI_SLICE_MAX_BYTES, 1, 0x3fffffff, 1, 500);
2404 v4l2_ctrl_new_std_menu(&ctx->ctrls, &coda_ctrl_ops,
2405 V4L2_CID_MPEG_VIDEO_HEADER_MODE,
2406 V4L2_MPEG_VIDEO_HEADER_MODE_JOINED_WITH_1ST_FRAME,
2407 (1 << V4L2_MPEG_VIDEO_HEADER_MODE_SEPARATE),
2408 V4L2_MPEG_VIDEO_HEADER_MODE_JOINED_WITH_1ST_FRAME);
2409
2410 if (ctx->ctrls.error) {
2411 v4l2_err(&ctx->dev->v4l2_dev, "control initialization error (%d)",
2412 ctx->ctrls.error);
2413 return -EINVAL;
2414 }
2415
2416 return v4l2_ctrl_handler_setup(&ctx->ctrls);
2417 }
2418
2419 static int coda_queue_init(void *priv, struct vb2_queue *src_vq,
2420 struct vb2_queue *dst_vq)
2421 {
2422 struct coda_ctx *ctx = priv;
2423 int ret;
2424
2425 src_vq->type = V4L2_BUF_TYPE_VIDEO_OUTPUT;
2426 src_vq->io_modes = VB2_DMABUF | VB2_MMAP | VB2_USERPTR;
2427 src_vq->drv_priv = ctx;
2428 src_vq->buf_struct_size = sizeof(struct v4l2_m2m_buffer);
2429 src_vq->ops = &coda_qops;
2430 src_vq->mem_ops = &vb2_dma_contig_memops;
2431 src_vq->timestamp_type = V4L2_BUF_FLAG_TIMESTAMP_COPY;
2432
2433 ret = vb2_queue_init(src_vq);
2434 if (ret)
2435 return ret;
2436
2437 dst_vq->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
2438 dst_vq->io_modes = VB2_DMABUF | VB2_MMAP | VB2_USERPTR;
2439 dst_vq->drv_priv = ctx;
2440 dst_vq->buf_struct_size = sizeof(struct v4l2_m2m_buffer);
2441 dst_vq->ops = &coda_qops;
2442 dst_vq->mem_ops = &vb2_dma_contig_memops;
2443 dst_vq->timestamp_type = V4L2_BUF_FLAG_TIMESTAMP_COPY;
2444
2445 return vb2_queue_init(dst_vq);
2446 }
2447
2448 static int coda_next_free_instance(struct coda_dev *dev)
2449 {
2450 int idx = ffz(dev->instance_mask);
2451
2452 if ((idx < 0) ||
2453 (dev->devtype->product == CODA_DX6 && idx > CODADX6_MAX_INSTANCES))
2454 return -EBUSY;
2455
2456 return idx;
2457 }
2458
2459 static int coda_open(struct file *file)
2460 {
2461 struct coda_dev *dev = video_drvdata(file);
2462 struct coda_ctx *ctx = NULL;
2463 int ret;
2464 int idx;
2465
2466 ctx = kzalloc(sizeof *ctx, GFP_KERNEL);
2467 if (!ctx)
2468 return -ENOMEM;
2469
2470 idx = coda_next_free_instance(dev);
2471 if (idx < 0) {
2472 ret = idx;
2473 goto err_coda_max;
2474 }
2475 set_bit(idx, &dev->instance_mask);
2476
2477 INIT_WORK(&ctx->skip_run, coda_skip_run);
2478 v4l2_fh_init(&ctx->fh, video_devdata(file));
2479 file->private_data = &ctx->fh;
2480 v4l2_fh_add(&ctx->fh);
2481 ctx->dev = dev;
2482 ctx->idx = idx;
2483 switch (dev->devtype->product) {
2484 case CODA_7541:
2485 ctx->reg_idx = 0;
2486 break;
2487 default:
2488 ctx->reg_idx = idx;
2489 }
2490
2491 ret = clk_prepare_enable(dev->clk_per);
2492 if (ret)
2493 goto err_clk_per;
2494
2495 ret = clk_prepare_enable(dev->clk_ahb);
2496 if (ret)
2497 goto err_clk_ahb;
2498
2499 set_default_params(ctx);
2500 ctx->m2m_ctx = v4l2_m2m_ctx_init(dev->m2m_dev, ctx,
2501 &coda_queue_init);
2502 if (IS_ERR(ctx->m2m_ctx)) {
2503 ret = PTR_ERR(ctx->m2m_ctx);
2504
2505 v4l2_err(&dev->v4l2_dev, "%s return error (%d)\n",
2506 __func__, ret);
2507 goto err_ctx_init;
2508 }
2509 ret = coda_ctrls_setup(ctx);
2510 if (ret) {
2511 v4l2_err(&dev->v4l2_dev, "failed to setup coda controls\n");
2512 goto err_ctrls_setup;
2513 }
2514
2515 ctx->fh.ctrl_handler = &ctx->ctrls;
2516
2517 ret = coda_alloc_context_buf(ctx, &ctx->parabuf, CODA_PARA_BUF_SIZE);
2518 if (ret < 0) {
2519 v4l2_err(&dev->v4l2_dev, "failed to allocate parabuf");
2520 goto err_dma_alloc;
2521 }
2522
2523 ctx->bitstream.size = CODA_MAX_FRAME_SIZE;
2524 ctx->bitstream.vaddr = dma_alloc_writecombine(&dev->plat_dev->dev,
2525 ctx->bitstream.size, &ctx->bitstream.paddr, GFP_KERNEL);
2526 if (!ctx->bitstream.vaddr) {
2527 v4l2_err(&dev->v4l2_dev, "failed to allocate bitstream ringbuffer");
2528 ret = -ENOMEM;
2529 goto err_dma_writecombine;
2530 }
2531 kfifo_init(&ctx->bitstream_fifo,
2532 ctx->bitstream.vaddr, ctx->bitstream.size);
2533 mutex_init(&ctx->bitstream_mutex);
2534 mutex_init(&ctx->buffer_mutex);
2535
2536 coda_lock(ctx);
2537 list_add(&ctx->list, &dev->instances);
2538 coda_unlock(ctx);
2539
2540 v4l2_dbg(1, coda_debug, &dev->v4l2_dev, "Created instance %d (%p)\n",
2541 ctx->idx, ctx);
2542
2543 return 0;
2544
2545 err_dma_writecombine:
2546 coda_free_context_buffers(ctx);
2547 if (ctx->dev->devtype->product == CODA_DX6)
2548 coda_free_aux_buf(dev, &ctx->workbuf);
2549 coda_free_aux_buf(dev, &ctx->parabuf);
2550 err_dma_alloc:
2551 v4l2_ctrl_handler_free(&ctx->ctrls);
2552 err_ctrls_setup:
2553 v4l2_m2m_ctx_release(ctx->m2m_ctx);
2554 err_ctx_init:
2555 clk_disable_unprepare(dev->clk_ahb);
2556 err_clk_ahb:
2557 clk_disable_unprepare(dev->clk_per);
2558 err_clk_per:
2559 v4l2_fh_del(&ctx->fh);
2560 v4l2_fh_exit(&ctx->fh);
2561 clear_bit(ctx->idx, &dev->instance_mask);
2562 err_coda_max:
2563 kfree(ctx);
2564 return ret;
2565 }
2566
2567 static int coda_release(struct file *file)
2568 {
2569 struct coda_dev *dev = video_drvdata(file);
2570 struct coda_ctx *ctx = fh_to_ctx(file->private_data);
2571
2572 v4l2_dbg(1, coda_debug, &dev->v4l2_dev, "Releasing instance %p\n",
2573 ctx);
2574
2575 /* If this instance is running, call .job_abort and wait for it to end */
2576 v4l2_m2m_ctx_release(ctx->m2m_ctx);
2577
2578 /* In case the instance was not running, we still need to call SEQ_END */
2579 mutex_lock(&dev->coda_mutex);
2580 v4l2_dbg(1, coda_debug, &dev->v4l2_dev,
2581 "%s: sent command 'SEQ_END' to coda\n", __func__);
2582 if (coda_command_sync(ctx, CODA_COMMAND_SEQ_END)) {
2583 v4l2_err(&dev->v4l2_dev,
2584 "CODA_COMMAND_SEQ_END failed\n");
2585 mutex_unlock(&dev->coda_mutex);
2586 return -ETIMEDOUT;
2587 }
2588 mutex_unlock(&dev->coda_mutex);
2589
2590 coda_free_framebuffers(ctx);
2591
2592 coda_lock(ctx);
2593 list_del(&ctx->list);
2594 coda_unlock(ctx);
2595
2596 dma_free_writecombine(&dev->plat_dev->dev, ctx->bitstream.size,
2597 ctx->bitstream.vaddr, ctx->bitstream.paddr);
2598 coda_free_context_buffers(ctx);
2599 if (ctx->dev->devtype->product == CODA_DX6)
2600 coda_free_aux_buf(dev, &ctx->workbuf);
2601
2602 coda_free_aux_buf(dev, &ctx->parabuf);
2603 v4l2_ctrl_handler_free(&ctx->ctrls);
2604 clk_disable_unprepare(dev->clk_ahb);
2605 clk_disable_unprepare(dev->clk_per);
2606 v4l2_fh_del(&ctx->fh);
2607 v4l2_fh_exit(&ctx->fh);
2608 clear_bit(ctx->idx, &dev->instance_mask);
2609 kfree(ctx);
2610
2611 return 0;
2612 }
2613
2614 static unsigned int coda_poll(struct file *file,
2615 struct poll_table_struct *wait)
2616 {
2617 struct coda_ctx *ctx = fh_to_ctx(file->private_data);
2618 int ret;
2619
2620 coda_lock(ctx);
2621 ret = v4l2_m2m_poll(file, ctx->m2m_ctx, wait);
2622 coda_unlock(ctx);
2623 return ret;
2624 }
2625
2626 static int coda_mmap(struct file *file, struct vm_area_struct *vma)
2627 {
2628 struct coda_ctx *ctx = fh_to_ctx(file->private_data);
2629
2630 return v4l2_m2m_mmap(file, ctx->m2m_ctx, vma);
2631 }
2632
2633 static const struct v4l2_file_operations coda_fops = {
2634 .owner = THIS_MODULE,
2635 .open = coda_open,
2636 .release = coda_release,
2637 .poll = coda_poll,
2638 .unlocked_ioctl = video_ioctl2,
2639 .mmap = coda_mmap,
2640 };
2641
2642 static void coda_finish_decode(struct coda_ctx *ctx)
2643 {
2644 struct coda_dev *dev = ctx->dev;
2645 struct coda_q_data *q_data_src;
2646 struct coda_q_data *q_data_dst;
2647 struct vb2_buffer *dst_buf;
2648 int width, height;
2649 int decoded_idx;
2650 int display_idx;
2651 u32 src_fourcc;
2652 int success;
2653 u32 val;
2654
2655 dst_buf = v4l2_m2m_next_dst_buf(ctx->m2m_ctx);
2656
2657 /* Update kfifo out pointer from coda bitstream read pointer */
2658 coda_kfifo_sync_from_device(ctx);
2659
2660 /*
2661 * in stream-end mode, the read pointer can overshoot the write pointer
2662 * by up to 512 bytes
2663 */
2664 if (ctx->bit_stream_param & CODA_BIT_STREAM_END_FLAG) {
2665 if (coda_get_bitstream_payload(ctx) >= 0x100000 - 512)
2666 kfifo_init(&ctx->bitstream_fifo,
2667 ctx->bitstream.vaddr, ctx->bitstream.size);
2668 }
2669
2670 q_data_src = get_q_data(ctx, V4L2_BUF_TYPE_VIDEO_OUTPUT);
2671 src_fourcc = q_data_src->fourcc;
2672
2673 val = coda_read(dev, CODA_RET_DEC_PIC_SUCCESS);
2674 if (val != 1)
2675 pr_err("DEC_PIC_SUCCESS = %d\n", val);
2676
2677 success = val & 0x1;
2678 if (!success)
2679 v4l2_err(&dev->v4l2_dev, "decode failed\n");
2680
2681 if (src_fourcc == V4L2_PIX_FMT_H264) {
2682 if (val & (1 << 3))
2683 v4l2_err(&dev->v4l2_dev,
2684 "insufficient PS buffer space (%d bytes)\n",
2685 ctx->psbuf.size);
2686 if (val & (1 << 2))
2687 v4l2_err(&dev->v4l2_dev,
2688 "insufficient slice buffer space (%d bytes)\n",
2689 ctx->slicebuf.size);
2690 }
2691
2692 val = coda_read(dev, CODA_RET_DEC_PIC_SIZE);
2693 width = (val >> 16) & 0xffff;
2694 height = val & 0xffff;
2695
2696 q_data_dst = get_q_data(ctx, V4L2_BUF_TYPE_VIDEO_CAPTURE);
2697
2698 val = coda_read(dev, CODA_RET_DEC_PIC_TYPE);
2699 if ((val & 0x7) == 0) {
2700 dst_buf->v4l2_buf.flags |= V4L2_BUF_FLAG_KEYFRAME;
2701 dst_buf->v4l2_buf.flags &= ~V4L2_BUF_FLAG_PFRAME;
2702 } else {
2703 dst_buf->v4l2_buf.flags |= V4L2_BUF_FLAG_PFRAME;
2704 dst_buf->v4l2_buf.flags &= ~V4L2_BUF_FLAG_KEYFRAME;
2705 }
2706
2707 val = coda_read(dev, CODA_RET_DEC_PIC_ERR_MB);
2708 if (val > 0)
2709 v4l2_err(&dev->v4l2_dev,
2710 "errors in %d macroblocks\n", val);
2711
2712 if (dev->devtype->product == CODA_7541) {
2713 val = coda_read(dev, CODA_RET_DEC_PIC_OPTION);
2714 if (val == 0) {
2715 /* not enough bitstream data */
2716 v4l2_dbg(1, coda_debug, &dev->v4l2_dev,
2717 "prescan failed: %d\n", val);
2718 ctx->prescan_failed = true;
2719 return;
2720 }
2721 }
2722
2723 ctx->frm_dis_flg = coda_read(dev, CODA_REG_BIT_FRM_DIS_FLG(ctx->reg_idx));
2724
2725 /*
2726 * The previous display frame was copied out by the rotator,
2727 * now it can be overwritten again
2728 */
2729 if (ctx->display_idx >= 0 &&
2730 ctx->display_idx < ctx->num_internal_frames) {
2731 ctx->frm_dis_flg &= ~(1 << ctx->display_idx);
2732 coda_write(dev, ctx->frm_dis_flg,
2733 CODA_REG_BIT_FRM_DIS_FLG(ctx->reg_idx));
2734 }
2735
2736 /*
2737 * The index of the last decoded frame, not necessarily in
2738 * display order, and the index of the next display frame.
2739 * The latter could have been decoded in a previous run.
2740 */
2741 decoded_idx = coda_read(dev, CODA_RET_DEC_PIC_CUR_IDX);
2742 display_idx = coda_read(dev, CODA_RET_DEC_PIC_FRAME_IDX);
2743
2744 if (decoded_idx == -1) {
2745 /* no frame was decoded, but we might have a display frame */
2746 if (display_idx < 0 && ctx->display_idx < 0)
2747 ctx->prescan_failed = true;
2748 } else if (decoded_idx == -2) {
2749 /* no frame was decoded, we still return the remaining buffers */
2750 } else if (decoded_idx < 0 || decoded_idx >= ctx->num_internal_frames) {
2751 v4l2_err(&dev->v4l2_dev,
2752 "decoded frame index out of range: %d\n", decoded_idx);
2753 }
2754
2755 if (display_idx == -1) {
2756 /*
2757 * no more frames to be decoded, but there could still
2758 * be rotator output to dequeue
2759 */
2760 ctx->prescan_failed = true;
2761 } else if (display_idx == -3) {
2762 /* possibly prescan failure */
2763 } else if (display_idx < 0 || display_idx >= ctx->num_internal_frames) {
2764 v4l2_err(&dev->v4l2_dev,
2765 "presentation frame index out of range: %d\n",
2766 display_idx);
2767 }
2768
2769 /* If a frame was copied out, return it */
2770 if (ctx->display_idx >= 0 &&
2771 ctx->display_idx < ctx->num_internal_frames) {
2772 dst_buf = v4l2_m2m_dst_buf_remove(ctx->m2m_ctx);
2773 dst_buf->v4l2_buf.sequence = ctx->osequence++;
2774
2775 vb2_set_plane_payload(dst_buf, 0, width * height * 3 / 2);
2776
2777 v4l2_m2m_buf_done(dst_buf, success ? VB2_BUF_STATE_DONE :
2778 VB2_BUF_STATE_ERROR);
2779
2780 v4l2_dbg(1, coda_debug, &dev->v4l2_dev,
2781 "job finished: decoding frame (%d) (%s)\n",
2782 dst_buf->v4l2_buf.sequence,
2783 (dst_buf->v4l2_buf.flags & V4L2_BUF_FLAG_KEYFRAME) ?
2784 "KEYFRAME" : "PFRAME");
2785 } else {
2786 v4l2_dbg(1, coda_debug, &dev->v4l2_dev,
2787 "job finished: no frame decoded\n");
2788 }
2789
2790 /* The rotator will copy the current display frame next time */
2791 ctx->display_idx = display_idx;
2792 }
2793
2794 static void coda_finish_encode(struct coda_ctx *ctx)
2795 {
2796 struct vb2_buffer *src_buf, *dst_buf;
2797 struct coda_dev *dev = ctx->dev;
2798 u32 wr_ptr, start_ptr;
2799
2800 src_buf = v4l2_m2m_src_buf_remove(ctx->m2m_ctx);
2801 dst_buf = v4l2_m2m_dst_buf_remove(ctx->m2m_ctx);
2802
2803 /* Get results from the coda */
2804 start_ptr = coda_read(dev, CODA_CMD_ENC_PIC_BB_START);
2805 wr_ptr = coda_read(dev, CODA_REG_BIT_WR_PTR(ctx->reg_idx));
2806
2807 /* Calculate bytesused field */
2808 if (dst_buf->v4l2_buf.sequence == 0) {
2809 vb2_set_plane_payload(dst_buf, 0, wr_ptr - start_ptr +
2810 ctx->vpu_header_size[0] +
2811 ctx->vpu_header_size[1] +
2812 ctx->vpu_header_size[2]);
2813 } else {
2814 vb2_set_plane_payload(dst_buf, 0, wr_ptr - start_ptr);
2815 }
2816
2817 v4l2_dbg(1, coda_debug, &ctx->dev->v4l2_dev, "frame size = %u\n",
2818 wr_ptr - start_ptr);
2819
2820 coda_read(dev, CODA_RET_ENC_PIC_SLICE_NUM);
2821 coda_read(dev, CODA_RET_ENC_PIC_FLAG);
2822
2823 if (coda_read(dev, CODA_RET_ENC_PIC_TYPE) == 0) {
2824 dst_buf->v4l2_buf.flags |= V4L2_BUF_FLAG_KEYFRAME;
2825 dst_buf->v4l2_buf.flags &= ~V4L2_BUF_FLAG_PFRAME;
2826 } else {
2827 dst_buf->v4l2_buf.flags |= V4L2_BUF_FLAG_PFRAME;
2828 dst_buf->v4l2_buf.flags &= ~V4L2_BUF_FLAG_KEYFRAME;
2829 }
2830
2831 dst_buf->v4l2_buf.timestamp = src_buf->v4l2_buf.timestamp;
2832 dst_buf->v4l2_buf.timecode = src_buf->v4l2_buf.timecode;
2833
2834 v4l2_m2m_buf_done(src_buf, VB2_BUF_STATE_DONE);
2835 v4l2_m2m_buf_done(dst_buf, VB2_BUF_STATE_DONE);
2836
2837 ctx->gopcounter--;
2838 if (ctx->gopcounter < 0)
2839 ctx->gopcounter = ctx->params.gop_size - 1;
2840
2841 v4l2_dbg(1, coda_debug, &dev->v4l2_dev,
2842 "job finished: encoding frame (%d) (%s)\n",
2843 dst_buf->v4l2_buf.sequence,
2844 (dst_buf->v4l2_buf.flags & V4L2_BUF_FLAG_KEYFRAME) ?
2845 "KEYFRAME" : "PFRAME");
2846 }
2847
2848 static irqreturn_t coda_irq_handler(int irq, void *data)
2849 {
2850 struct coda_dev *dev = data;
2851 struct coda_ctx *ctx;
2852
2853 cancel_delayed_work(&dev->timeout);
2854
2855 /* read status register to attend the IRQ */
2856 coda_read(dev, CODA_REG_BIT_INT_STATUS);
2857 coda_write(dev, CODA_REG_BIT_INT_CLEAR_SET,
2858 CODA_REG_BIT_INT_CLEAR);
2859
2860 ctx = v4l2_m2m_get_curr_priv(dev->m2m_dev);
2861 if (ctx == NULL) {
2862 v4l2_err(&dev->v4l2_dev, "Instance released before the end of transaction\n");
2863 mutex_unlock(&dev->coda_mutex);
2864 return IRQ_HANDLED;
2865 }
2866
2867 if (ctx->aborting) {
2868 v4l2_dbg(1, coda_debug, &ctx->dev->v4l2_dev,
2869 "task has been aborted\n");
2870 goto out;
2871 }
2872
2873 if (coda_isbusy(ctx->dev)) {
2874 v4l2_dbg(1, coda_debug, &ctx->dev->v4l2_dev,
2875 "coda is still busy!!!!\n");
2876 return IRQ_NONE;
2877 }
2878
2879 if (ctx->inst_type == CODA_INST_DECODER)
2880 coda_finish_decode(ctx);
2881 else
2882 coda_finish_encode(ctx);
2883
2884 out:
2885 if (ctx->aborting || (!ctx->streamon_cap && !ctx->streamon_out)) {
2886 v4l2_dbg(1, coda_debug, &dev->v4l2_dev,
2887 "%s: sent command 'SEQ_END' to coda\n", __func__);
2888 if (coda_command_sync(ctx, CODA_COMMAND_SEQ_END)) {
2889 v4l2_err(&dev->v4l2_dev,
2890 "CODA_COMMAND_SEQ_END failed\n");
2891 }
2892
2893 kfifo_init(&ctx->bitstream_fifo,
2894 ctx->bitstream.vaddr, ctx->bitstream.size);
2895
2896 coda_free_framebuffers(ctx);
2897 coda_free_context_buffers(ctx);
2898 }
2899
2900 mutex_unlock(&dev->coda_mutex);
2901 mutex_unlock(&ctx->buffer_mutex);
2902
2903 v4l2_m2m_job_finish(ctx->dev->m2m_dev, ctx->m2m_ctx);
2904
2905 return IRQ_HANDLED;
2906 }
2907
2908 static void coda_timeout(struct work_struct *work)
2909 {
2910 struct coda_ctx *ctx;
2911 struct coda_dev *dev = container_of(to_delayed_work(work),
2912 struct coda_dev, timeout);
2913
2914 dev_err(&dev->plat_dev->dev, "CODA PIC_RUN timeout, stopping all streams\n");
2915
2916 mutex_lock(&dev->dev_mutex);
2917 list_for_each_entry(ctx, &dev->instances, list) {
2918 if (mutex_is_locked(&ctx->buffer_mutex))
2919 mutex_unlock(&ctx->buffer_mutex);
2920 v4l2_m2m_streamoff(NULL, ctx->m2m_ctx, V4L2_BUF_TYPE_VIDEO_OUTPUT);
2921 v4l2_m2m_streamoff(NULL, ctx->m2m_ctx, V4L2_BUF_TYPE_VIDEO_CAPTURE);
2922 }
2923 mutex_unlock(&dev->dev_mutex);
2924
2925 mutex_unlock(&dev->coda_mutex);
2926 ctx = v4l2_m2m_get_curr_priv(dev->m2m_dev);
2927 v4l2_m2m_job_finish(ctx->dev->m2m_dev, ctx->m2m_ctx);
2928 }
2929
2930 static u32 coda_supported_firmwares[] = {
2931 CODA_FIRMWARE_VERNUM(CODA_DX6, 2, 2, 5),
2932 CODA_FIRMWARE_VERNUM(CODA_7541, 1, 4, 50),
2933 };
2934
2935 static bool coda_firmware_supported(u32 vernum)
2936 {
2937 int i;
2938
2939 for (i = 0; i < ARRAY_SIZE(coda_supported_firmwares); i++)
2940 if (vernum == coda_supported_firmwares[i])
2941 return true;
2942 return false;
2943 }
2944
2945 static int coda_hw_init(struct coda_dev *dev)
2946 {
2947 u16 product, major, minor, release;
2948 u32 data;
2949 u16 *p;
2950 int i, ret;
2951
2952 ret = clk_prepare_enable(dev->clk_per);
2953 if (ret)
2954 return ret;
2955
2956 ret = clk_prepare_enable(dev->clk_ahb);
2957 if (ret)
2958 goto err_clk_ahb;
2959
2960 /*
2961 * Copy the first CODA_ISRAM_SIZE in the internal SRAM.
2962 * The 16-bit chars in the code buffer are in memory access
2963 * order, re-sort them to CODA order for register download.
2964 * Data in this SRAM survives a reboot.
2965 */
2966 p = (u16 *)dev->codebuf.vaddr;
2967 if (dev->devtype->product == CODA_DX6) {
2968 for (i = 0; i < (CODA_ISRAM_SIZE / 2); i++) {
2969 data = CODA_DOWN_ADDRESS_SET(i) |
2970 CODA_DOWN_DATA_SET(p[i ^ 1]);
2971 coda_write(dev, data, CODA_REG_BIT_CODE_DOWN);
2972 }
2973 } else {
2974 for (i = 0; i < (CODA_ISRAM_SIZE / 2); i++) {
2975 data = CODA_DOWN_ADDRESS_SET(i) |
2976 CODA_DOWN_DATA_SET(p[round_down(i, 4) +
2977 3 - (i % 4)]);
2978 coda_write(dev, data, CODA_REG_BIT_CODE_DOWN);
2979 }
2980 }
2981
2982 /* Clear registers */
2983 for (i = 0; i < 64; i++)
2984 coda_write(dev, 0, CODA_REG_BIT_CODE_BUF_ADDR + i * 4);
2985
2986 /* Tell the BIT where to find everything it needs */
2987 if (dev->devtype->product == CODA_7541) {
2988 coda_write(dev, dev->tempbuf.paddr,
2989 CODA_REG_BIT_TEMP_BUF_ADDR);
2990 coda_write(dev, 0, CODA_REG_BIT_BIT_STREAM_PARAM);
2991 } else {
2992 coda_write(dev, dev->workbuf.paddr,
2993 CODA_REG_BIT_WORK_BUF_ADDR);
2994 }
2995 coda_write(dev, dev->codebuf.paddr,
2996 CODA_REG_BIT_CODE_BUF_ADDR);
2997 coda_write(dev, 0, CODA_REG_BIT_CODE_RUN);
2998
2999 /* Set default values */
3000 switch (dev->devtype->product) {
3001 case CODA_DX6:
3002 coda_write(dev, CODADX6_STREAM_BUF_PIC_FLUSH, CODA_REG_BIT_STREAM_CTRL);
3003 break;
3004 default:
3005 coda_write(dev, CODA7_STREAM_BUF_PIC_FLUSH, CODA_REG_BIT_STREAM_CTRL);
3006 }
3007 coda_write(dev, 0, CODA_REG_BIT_FRAME_MEM_CTRL);
3008
3009 if (dev->devtype->product != CODA_DX6)
3010 coda_write(dev, 0, CODA7_REG_BIT_AXI_SRAM_USE);
3011
3012 coda_write(dev, CODA_INT_INTERRUPT_ENABLE,
3013 CODA_REG_BIT_INT_ENABLE);
3014
3015 /* Reset VPU and start processor */
3016 data = coda_read(dev, CODA_REG_BIT_CODE_RESET);
3017 data |= CODA_REG_RESET_ENABLE;
3018 coda_write(dev, data, CODA_REG_BIT_CODE_RESET);
3019 udelay(10);
3020 data &= ~CODA_REG_RESET_ENABLE;
3021 coda_write(dev, data, CODA_REG_BIT_CODE_RESET);
3022 coda_write(dev, CODA_REG_RUN_ENABLE, CODA_REG_BIT_CODE_RUN);
3023
3024 /* Load firmware */
3025 coda_write(dev, 0, CODA_CMD_FIRMWARE_VERNUM);
3026 coda_write(dev, CODA_REG_BIT_BUSY_FLAG, CODA_REG_BIT_BUSY);
3027 coda_write(dev, 0, CODA_REG_BIT_RUN_INDEX);
3028 coda_write(dev, 0, CODA_REG_BIT_RUN_COD_STD);
3029 coda_write(dev, CODA_COMMAND_FIRMWARE_GET, CODA_REG_BIT_RUN_COMMAND);
3030 if (coda_wait_timeout(dev)) {
3031 clk_disable_unprepare(dev->clk_per);
3032 clk_disable_unprepare(dev->clk_ahb);
3033 v4l2_err(&dev->v4l2_dev, "firmware get command error\n");
3034 return -EIO;
3035 }
3036
3037 /* Check we are compatible with the loaded firmware */
3038 data = coda_read(dev, CODA_CMD_FIRMWARE_VERNUM);
3039 product = CODA_FIRMWARE_PRODUCT(data);
3040 major = CODA_FIRMWARE_MAJOR(data);
3041 minor = CODA_FIRMWARE_MINOR(data);
3042 release = CODA_FIRMWARE_RELEASE(data);
3043
3044 clk_disable_unprepare(dev->clk_per);
3045 clk_disable_unprepare(dev->clk_ahb);
3046
3047 if (product != dev->devtype->product) {
3048 v4l2_err(&dev->v4l2_dev, "Wrong firmware. Hw: %s, Fw: %s,"
3049 " Version: %u.%u.%u\n",
3050 coda_product_name(dev->devtype->product),
3051 coda_product_name(product), major, minor, release);
3052 return -EINVAL;
3053 }
3054
3055 v4l2_info(&dev->v4l2_dev, "Initialized %s.\n",
3056 coda_product_name(product));
3057
3058 if (coda_firmware_supported(data)) {
3059 v4l2_info(&dev->v4l2_dev, "Firmware version: %u.%u.%u\n",
3060 major, minor, release);
3061 } else {
3062 v4l2_warn(&dev->v4l2_dev, "Unsupported firmware version: "
3063 "%u.%u.%u\n", major, minor, release);
3064 }
3065
3066 return 0;
3067
3068 err_clk_ahb:
3069 clk_disable_unprepare(dev->clk_per);
3070 return ret;
3071 }
3072
3073 static void coda_fw_callback(const struct firmware *fw, void *context)
3074 {
3075 struct coda_dev *dev = context;
3076 struct platform_device *pdev = dev->plat_dev;
3077 int ret;
3078
3079 if (!fw) {
3080 v4l2_err(&dev->v4l2_dev, "firmware request failed\n");
3081 return;
3082 }
3083
3084 /* allocate auxiliary per-device code buffer for the BIT processor */
3085 ret = coda_alloc_aux_buf(dev, &dev->codebuf, fw->size);
3086 if (ret < 0) {
3087 dev_err(&pdev->dev, "failed to allocate code buffer\n");
3088 return;
3089 }
3090
3091 /* Copy the whole firmware image to the code buffer */
3092 memcpy(dev->codebuf.vaddr, fw->data, fw->size);
3093 release_firmware(fw);
3094
3095 ret = coda_hw_init(dev);
3096 if (ret) {
3097 v4l2_err(&dev->v4l2_dev, "HW initialization failed\n");
3098 return;
3099 }
3100
3101 dev->vfd.fops = &coda_fops,
3102 dev->vfd.ioctl_ops = &coda_ioctl_ops;
3103 dev->vfd.release = video_device_release_empty,
3104 dev->vfd.lock = &dev->dev_mutex;
3105 dev->vfd.v4l2_dev = &dev->v4l2_dev;
3106 dev->vfd.vfl_dir = VFL_DIR_M2M;
3107 snprintf(dev->vfd.name, sizeof(dev->vfd.name), "%s", CODA_NAME);
3108 video_set_drvdata(&dev->vfd, dev);
3109
3110 dev->alloc_ctx = vb2_dma_contig_init_ctx(&pdev->dev);
3111 if (IS_ERR(dev->alloc_ctx)) {
3112 v4l2_err(&dev->v4l2_dev, "Failed to alloc vb2 context\n");
3113 return;
3114 }
3115
3116 dev->m2m_dev = v4l2_m2m_init(&coda_m2m_ops);
3117 if (IS_ERR(dev->m2m_dev)) {
3118 v4l2_err(&dev->v4l2_dev, "Failed to init mem2mem device\n");
3119 goto rel_ctx;
3120 }
3121
3122 ret = video_register_device(&dev->vfd, VFL_TYPE_GRABBER, 0);
3123 if (ret) {
3124 v4l2_err(&dev->v4l2_dev, "Failed to register video device\n");
3125 goto rel_m2m;
3126 }
3127 v4l2_info(&dev->v4l2_dev, "codec registered as /dev/video%d\n",
3128 dev->vfd.num);
3129
3130 return;
3131
3132 rel_m2m:
3133 v4l2_m2m_release(dev->m2m_dev);
3134 rel_ctx:
3135 vb2_dma_contig_cleanup_ctx(dev->alloc_ctx);
3136 }
3137
3138 static int coda_firmware_request(struct coda_dev *dev)
3139 {
3140 char *fw = dev->devtype->firmware;
3141
3142 dev_dbg(&dev->plat_dev->dev, "requesting firmware '%s' for %s\n", fw,
3143 coda_product_name(dev->devtype->product));
3144
3145 return request_firmware_nowait(THIS_MODULE, true,
3146 fw, &dev->plat_dev->dev, GFP_KERNEL, dev, coda_fw_callback);
3147 }
3148
3149 enum coda_platform {
3150 CODA_IMX27,
3151 CODA_IMX53,
3152 };
3153
3154 static const struct coda_devtype coda_devdata[] = {
3155 [CODA_IMX27] = {
3156 .firmware = "v4l-codadx6-imx27.bin",
3157 .product = CODA_DX6,
3158 .codecs = codadx6_codecs,
3159 .num_codecs = ARRAY_SIZE(codadx6_codecs),
3160 },
3161 [CODA_IMX53] = {
3162 .firmware = "v4l-coda7541-imx53.bin",
3163 .product = CODA_7541,
3164 .codecs = coda7_codecs,
3165 .num_codecs = ARRAY_SIZE(coda7_codecs),
3166 },
3167 };
3168
3169 static struct platform_device_id coda_platform_ids[] = {
3170 { .name = "coda-imx27", .driver_data = CODA_IMX27 },
3171 { .name = "coda-imx53", .driver_data = CODA_IMX53 },
3172 { /* sentinel */ }
3173 };
3174 MODULE_DEVICE_TABLE(platform, coda_platform_ids);
3175
3176 #ifdef CONFIG_OF
3177 static const struct of_device_id coda_dt_ids[] = {
3178 { .compatible = "fsl,imx27-vpu", .data = &coda_devdata[CODA_IMX27] },
3179 { .compatible = "fsl,imx53-vpu", .data = &coda_devdata[CODA_IMX53] },
3180 { /* sentinel */ }
3181 };
3182 MODULE_DEVICE_TABLE(of, coda_dt_ids);
3183 #endif
3184
3185 static int coda_probe(struct platform_device *pdev)
3186 {
3187 const struct of_device_id *of_id =
3188 of_match_device(of_match_ptr(coda_dt_ids), &pdev->dev);
3189 const struct platform_device_id *pdev_id;
3190 struct coda_platform_data *pdata = pdev->dev.platform_data;
3191 struct device_node *np = pdev->dev.of_node;
3192 struct gen_pool *pool;
3193 struct coda_dev *dev;
3194 struct resource *res;
3195 int ret, irq;
3196
3197 dev = devm_kzalloc(&pdev->dev, sizeof *dev, GFP_KERNEL);
3198 if (!dev) {
3199 dev_err(&pdev->dev, "Not enough memory for %s\n",
3200 CODA_NAME);
3201 return -ENOMEM;
3202 }
3203
3204 spin_lock_init(&dev->irqlock);
3205 INIT_LIST_HEAD(&dev->instances);
3206 INIT_DELAYED_WORK(&dev->timeout, coda_timeout);
3207
3208 dev->plat_dev = pdev;
3209 dev->clk_per = devm_clk_get(&pdev->dev, "per");
3210 if (IS_ERR(dev->clk_per)) {
3211 dev_err(&pdev->dev, "Could not get per clock\n");
3212 return PTR_ERR(dev->clk_per);
3213 }
3214
3215 dev->clk_ahb = devm_clk_get(&pdev->dev, "ahb");
3216 if (IS_ERR(dev->clk_ahb)) {
3217 dev_err(&pdev->dev, "Could not get ahb clock\n");
3218 return PTR_ERR(dev->clk_ahb);
3219 }
3220
3221 /* Get memory for physical registers */
3222 res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
3223 dev->regs_base = devm_ioremap_resource(&pdev->dev, res);
3224 if (IS_ERR(dev->regs_base))
3225 return PTR_ERR(dev->regs_base);
3226
3227 /* IRQ */
3228 irq = platform_get_irq(pdev, 0);
3229 if (irq < 0) {
3230 dev_err(&pdev->dev, "failed to get irq resource\n");
3231 return -ENOENT;
3232 }
3233
3234 if (devm_request_threaded_irq(&pdev->dev, irq, NULL, coda_irq_handler,
3235 IRQF_ONESHOT, CODA_NAME, dev) < 0) {
3236 dev_err(&pdev->dev, "failed to request irq\n");
3237 return -ENOENT;
3238 }
3239
3240 /* Get IRAM pool from device tree or platform data */
3241 pool = of_get_named_gen_pool(np, "iram", 0);
3242 if (!pool && pdata)
3243 pool = dev_get_gen_pool(pdata->iram_dev);
3244 if (!pool) {
3245 dev_err(&pdev->dev, "iram pool not available\n");
3246 return -ENOMEM;
3247 }
3248 dev->iram_pool = pool;
3249
3250 ret = v4l2_device_register(&pdev->dev, &dev->v4l2_dev);
3251 if (ret)
3252 return ret;
3253
3254 mutex_init(&dev->dev_mutex);
3255 mutex_init(&dev->coda_mutex);
3256
3257 pdev_id = of_id ? of_id->data : platform_get_device_id(pdev);
3258
3259 if (of_id) {
3260 dev->devtype = of_id->data;
3261 } else if (pdev_id) {
3262 dev->devtype = &coda_devdata[pdev_id->driver_data];
3263 } else {
3264 v4l2_device_unregister(&dev->v4l2_dev);
3265 return -EINVAL;
3266 }
3267
3268 /* allocate auxiliary per-device buffers for the BIT processor */
3269 switch (dev->devtype->product) {
3270 case CODA_DX6:
3271 ret = coda_alloc_aux_buf(dev, &dev->workbuf,
3272 CODADX6_WORK_BUF_SIZE);
3273 if (ret < 0) {
3274 dev_err(&pdev->dev, "failed to allocate work buffer\n");
3275 v4l2_device_unregister(&dev->v4l2_dev);
3276 return ret;
3277 }
3278 break;
3279 case CODA_7541:
3280 dev->tempbuf.size = CODA7_TEMP_BUF_SIZE;
3281 break;
3282 }
3283 if (dev->tempbuf.size) {
3284 ret = coda_alloc_aux_buf(dev, &dev->tempbuf,
3285 dev->tempbuf.size);
3286 if (ret < 0) {
3287 dev_err(&pdev->dev, "failed to allocate temp buffer\n");
3288 v4l2_device_unregister(&dev->v4l2_dev);
3289 return ret;
3290 }
3291 }
3292
3293 switch (dev->devtype->product) {
3294 case CODA_DX6:
3295 dev->iram_size = CODADX6_IRAM_SIZE;
3296 break;
3297 case CODA_7541:
3298 dev->iram_size = CODA7_IRAM_SIZE;
3299 break;
3300 }
3301 dev->iram_vaddr = (unsigned long)gen_pool_dma_alloc(dev->iram_pool,
3302 dev->iram_size, (dma_addr_t *)&dev->iram_paddr);
3303 if (!dev->iram_vaddr) {
3304 dev_err(&pdev->dev, "unable to alloc iram\n");
3305 return -ENOMEM;
3306 }
3307
3308 platform_set_drvdata(pdev, dev);
3309
3310 return coda_firmware_request(dev);
3311 }
3312
3313 static int coda_remove(struct platform_device *pdev)
3314 {
3315 struct coda_dev *dev = platform_get_drvdata(pdev);
3316
3317 video_unregister_device(&dev->vfd);
3318 if (dev->m2m_dev)
3319 v4l2_m2m_release(dev->m2m_dev);
3320 if (dev->alloc_ctx)
3321 vb2_dma_contig_cleanup_ctx(dev->alloc_ctx);
3322 v4l2_device_unregister(&dev->v4l2_dev);
3323 if (dev->iram_vaddr)
3324 gen_pool_free(dev->iram_pool, dev->iram_vaddr, dev->iram_size);
3325 coda_free_aux_buf(dev, &dev->codebuf);
3326 coda_free_aux_buf(dev, &dev->tempbuf);
3327 coda_free_aux_buf(dev, &dev->workbuf);
3328 return 0;
3329 }
3330
3331 static struct platform_driver coda_driver = {
3332 .probe = coda_probe,
3333 .remove = coda_remove,
3334 .driver = {
3335 .name = CODA_NAME,
3336 .owner = THIS_MODULE,
3337 .of_match_table = of_match_ptr(coda_dt_ids),
3338 },
3339 .id_table = coda_platform_ids,
3340 };
3341
3342 module_platform_driver(coda_driver);
3343
3344 MODULE_LICENSE("GPL");
3345 MODULE_AUTHOR("Javier Martin <javier.martin@vista-silicon.com>");
3346 MODULE_DESCRIPTION("Coda multi-standard codec V4L2 driver");
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