1 // SPDX-License-Identifier: GPL-2.0-or-later
2 /*
3  * Coda multi-standard codec IP
4  *
5  * Copyright (C) 2012 Vista Silicon S.L.
6  *    Javier Martin, <javier.martin@vista-silicon.com>
7  *    Xavier Duret
8  */
9 
10 #include <linux/clk.h>
11 #include <linux/debugfs.h>
12 #include <linux/delay.h>
13 #include <linux/firmware.h>
14 #include <linux/gcd.h>
15 #include <linux/genalloc.h>
16 #include <linux/idr.h>
17 #include <linux/interrupt.h>
18 #include <linux/io.h>
19 #include <linux/irq.h>
20 #include <linux/kfifo.h>
21 #include <linux/module.h>
22 #include <linux/of.h>
23 #include <linux/of_platform.h>
24 #include <linux/platform_device.h>
25 #include <linux/pm_runtime.h>
26 #include <linux/slab.h>
27 #include <linux/videodev2.h>
28 #include <linux/ratelimit.h>
29 #include <linux/reset.h>
30 
31 #include <media/v4l2-ctrls.h>
32 #include <media/v4l2-device.h>
33 #include <media/v4l2-event.h>
34 #include <media/v4l2-ioctl.h>
35 #include <media/v4l2-mem2mem.h>
36 #include <media/videobuf2-v4l2.h>
37 #include <media/videobuf2-dma-contig.h>
38 #include <media/videobuf2-vmalloc.h>
39 
40 #include "coda.h"
41 #include "imx-vdoa.h"
42 
43 #define CODA_NAME		"coda"
44 
45 #define CODADX6_MAX_INSTANCES	4
46 #define CODA_MAX_FORMATS	5
47 
48 #define CODA_ISRAM_SIZE	(2048 * 2)
49 
50 #define MIN_W 48
51 #define MIN_H 16
52 
53 #define S_ALIGN		1 /* multiple of 2 */
54 #define W_ALIGN		1 /* multiple of 2 */
55 #define H_ALIGN		1 /* multiple of 2 */
56 
57 #define fh_to_ctx(__fh)	container_of(__fh, struct coda_ctx, fh)
58 
59 int coda_debug;
60 module_param(coda_debug, int, 0644);
61 MODULE_PARM_DESC(coda_debug, "Debug level (0-2)");
62 
63 static int disable_tiling;
64 module_param(disable_tiling, int, 0644);
65 MODULE_PARM_DESC(disable_tiling, "Disable tiled frame buffers");
66 
67 static int disable_vdoa;
68 module_param(disable_vdoa, int, 0644);
69 MODULE_PARM_DESC(disable_vdoa, "Disable Video Data Order Adapter tiled to raster-scan conversion");
70 
71 static int enable_bwb = 0;
72 module_param(enable_bwb, int, 0644);
73 MODULE_PARM_DESC(enable_bwb, "Enable BWB unit for decoding, may crash on certain streams");
74 
75 void coda_write(struct coda_dev *dev, u32 data, u32 reg)
76 {
77 	v4l2_dbg(3, coda_debug, &dev->v4l2_dev,
78 		 "%s: data=0x%x, reg=0x%x\n", __func__, data, reg);
79 	writel(data, dev->regs_base + reg);
80 }
81 
82 unsigned int coda_read(struct coda_dev *dev, u32 reg)
83 {
84 	u32 data;
85 
86 	data = readl(dev->regs_base + reg);
87 	v4l2_dbg(3, coda_debug, &dev->v4l2_dev,
88 		 "%s: data=0x%x, reg=0x%x\n", __func__, data, reg);
89 	return data;
90 }
91 
92 void coda_write_base(struct coda_ctx *ctx, struct coda_q_data *q_data,
93 		     struct vb2_v4l2_buffer *buf, unsigned int reg_y)
94 {
95 	u32 base_y = vb2_dma_contig_plane_dma_addr(&buf->vb2_buf, 0);
96 	u32 base_cb, base_cr;
97 
98 	switch (q_data->fourcc) {
99 	case V4L2_PIX_FMT_YUYV:
100 		/* Fallthrough: IN -H264-> CODA -NV12 MB-> VDOA -YUYV-> OUT */
101 	case V4L2_PIX_FMT_NV12:
102 	case V4L2_PIX_FMT_YUV420:
103 	default:
104 		base_cb = base_y + q_data->bytesperline * q_data->height;
105 		base_cr = base_cb + q_data->bytesperline * q_data->height / 4;
106 		break;
107 	case V4L2_PIX_FMT_YVU420:
108 		/* Switch Cb and Cr for YVU420 format */
109 		base_cr = base_y + q_data->bytesperline * q_data->height;
110 		base_cb = base_cr + q_data->bytesperline * q_data->height / 4;
111 		break;
112 	case V4L2_PIX_FMT_YUV422P:
113 		base_cb = base_y + q_data->bytesperline * q_data->height;
114 		base_cr = base_cb + q_data->bytesperline * q_data->height / 2;
115 	}
116 
117 	coda_write(ctx->dev, base_y, reg_y);
118 	coda_write(ctx->dev, base_cb, reg_y + 4);
119 	coda_write(ctx->dev, base_cr, reg_y + 8);
120 }
121 
122 #define CODA_CODEC(mode, src_fourcc, dst_fourcc, max_w, max_h) \
123 	{ mode, src_fourcc, dst_fourcc, max_w, max_h }
124 
125 /*
126  * Arrays of codecs supported by each given version of Coda:
127  *  i.MX27 -> codadx6
128  *  i.MX51 -> codahx4
129  *  i.MX53 -> coda7
130  *  i.MX6  -> coda960
131  * Use V4L2_PIX_FMT_YUV420 as placeholder for all supported YUV 4:2:0 variants
132  */
133 static const struct coda_codec codadx6_codecs[] = {
134 	CODA_CODEC(CODADX6_MODE_ENCODE_H264, V4L2_PIX_FMT_YUV420, V4L2_PIX_FMT_H264,  720, 576),
135 	CODA_CODEC(CODADX6_MODE_ENCODE_MP4,  V4L2_PIX_FMT_YUV420, V4L2_PIX_FMT_MPEG4, 720, 576),
136 };
137 
138 static const struct coda_codec codahx4_codecs[] = {
139 	CODA_CODEC(CODA7_MODE_ENCODE_H264, V4L2_PIX_FMT_YUV420, V4L2_PIX_FMT_H264,   720, 576),
140 	CODA_CODEC(CODA7_MODE_DECODE_H264, V4L2_PIX_FMT_H264,   V4L2_PIX_FMT_YUV420, 1920, 1088),
141 	CODA_CODEC(CODA7_MODE_DECODE_MP2,  V4L2_PIX_FMT_MPEG2,  V4L2_PIX_FMT_YUV420, 1920, 1088),
142 	CODA_CODEC(CODA7_MODE_DECODE_MP4,  V4L2_PIX_FMT_MPEG4,  V4L2_PIX_FMT_YUV420, 1280, 720),
143 };
144 
145 static const struct coda_codec coda7_codecs[] = {
146 	CODA_CODEC(CODA7_MODE_ENCODE_H264, V4L2_PIX_FMT_YUV420, V4L2_PIX_FMT_H264,   1280, 720),
147 	CODA_CODEC(CODA7_MODE_ENCODE_MP4,  V4L2_PIX_FMT_YUV420, V4L2_PIX_FMT_MPEG4,  1280, 720),
148 	CODA_CODEC(CODA7_MODE_ENCODE_MJPG, V4L2_PIX_FMT_YUV420, V4L2_PIX_FMT_JPEG,   8192, 8192),
149 	CODA_CODEC(CODA7_MODE_DECODE_H264, V4L2_PIX_FMT_H264,   V4L2_PIX_FMT_YUV420, 1920, 1088),
150 	CODA_CODEC(CODA7_MODE_DECODE_MP2,  V4L2_PIX_FMT_MPEG2,  V4L2_PIX_FMT_YUV420, 1920, 1088),
151 	CODA_CODEC(CODA7_MODE_DECODE_MP4,  V4L2_PIX_FMT_MPEG4,  V4L2_PIX_FMT_YUV420, 1920, 1088),
152 	CODA_CODEC(CODA7_MODE_DECODE_MJPG, V4L2_PIX_FMT_JPEG,   V4L2_PIX_FMT_YUV420, 8192, 8192),
153 };
154 
155 static const struct coda_codec coda9_codecs[] = {
156 	CODA_CODEC(CODA9_MODE_ENCODE_H264, V4L2_PIX_FMT_YUV420, V4L2_PIX_FMT_H264,   1920, 1088),
157 	CODA_CODEC(CODA9_MODE_ENCODE_MP4,  V4L2_PIX_FMT_YUV420, V4L2_PIX_FMT_MPEG4,  1920, 1088),
158 	CODA_CODEC(CODA9_MODE_ENCODE_MJPG, V4L2_PIX_FMT_YUV420, V4L2_PIX_FMT_JPEG,   8192, 8192),
159 	CODA_CODEC(CODA9_MODE_DECODE_H264, V4L2_PIX_FMT_H264,   V4L2_PIX_FMT_YUV420, 1920, 1088),
160 	CODA_CODEC(CODA9_MODE_DECODE_MP2,  V4L2_PIX_FMT_MPEG2,  V4L2_PIX_FMT_YUV420, 1920, 1088),
161 	CODA_CODEC(CODA9_MODE_DECODE_MP4,  V4L2_PIX_FMT_MPEG4,  V4L2_PIX_FMT_YUV420, 1920, 1088),
162 	CODA_CODEC(CODA9_MODE_DECODE_MJPG, V4L2_PIX_FMT_JPEG,	V4L2_PIX_FMT_YUV420, 8192, 8192),
163 };
164 
165 struct coda_video_device {
166 	const char *name;
167 	enum coda_inst_type type;
168 	const struct coda_context_ops *ops;
169 	bool direct;
170 	u32 src_formats[CODA_MAX_FORMATS];
171 	u32 dst_formats[CODA_MAX_FORMATS];
172 };
173 
174 static const struct coda_video_device coda_bit_encoder = {
175 	.name = "coda-video-encoder",
176 	.type = CODA_INST_ENCODER,
177 	.ops = &coda_bit_encode_ops,
178 	.src_formats = {
179 		V4L2_PIX_FMT_NV12,
180 		V4L2_PIX_FMT_YUV420,
181 		V4L2_PIX_FMT_YVU420,
182 	},
183 	.dst_formats = {
184 		V4L2_PIX_FMT_H264,
185 		V4L2_PIX_FMT_MPEG4,
186 	},
187 };
188 
189 static const struct coda_video_device coda_bit_jpeg_encoder = {
190 	.name = "coda-jpeg-encoder",
191 	.type = CODA_INST_ENCODER,
192 	.ops = &coda_bit_encode_ops,
193 	.src_formats = {
194 		V4L2_PIX_FMT_NV12,
195 		V4L2_PIX_FMT_YUV420,
196 		V4L2_PIX_FMT_YVU420,
197 		V4L2_PIX_FMT_YUV422P,
198 	},
199 	.dst_formats = {
200 		V4L2_PIX_FMT_JPEG,
201 	},
202 };
203 
204 static const struct coda_video_device coda_bit_decoder = {
205 	.name = "coda-video-decoder",
206 	.type = CODA_INST_DECODER,
207 	.ops = &coda_bit_decode_ops,
208 	.src_formats = {
209 		V4L2_PIX_FMT_H264,
210 		V4L2_PIX_FMT_MPEG2,
211 		V4L2_PIX_FMT_MPEG4,
212 	},
213 	.dst_formats = {
214 		V4L2_PIX_FMT_NV12,
215 		V4L2_PIX_FMT_YUV420,
216 		V4L2_PIX_FMT_YVU420,
217 		/*
218 		 * If V4L2_PIX_FMT_YUYV should be default,
219 		 * set_default_params() must be adjusted.
220 		 */
221 		V4L2_PIX_FMT_YUYV,
222 	},
223 };
224 
225 static const struct coda_video_device coda_bit_jpeg_decoder = {
226 	.name = "coda-jpeg-decoder",
227 	.type = CODA_INST_DECODER,
228 	.ops = &coda_bit_decode_ops,
229 	.src_formats = {
230 		V4L2_PIX_FMT_JPEG,
231 	},
232 	.dst_formats = {
233 		V4L2_PIX_FMT_NV12,
234 		V4L2_PIX_FMT_YUV420,
235 		V4L2_PIX_FMT_YVU420,
236 		V4L2_PIX_FMT_YUV422P,
237 	},
238 };
239 
240 static const struct coda_video_device coda9_jpeg_encoder = {
241 	.name = "coda-jpeg-encoder",
242 	.type = CODA_INST_ENCODER,
243 	.ops = &coda9_jpeg_encode_ops,
244 	.direct = true,
245 	.src_formats = {
246 		V4L2_PIX_FMT_NV12,
247 		V4L2_PIX_FMT_YUV420,
248 		V4L2_PIX_FMT_YVU420,
249 		V4L2_PIX_FMT_YUV422P,
250 		V4L2_PIX_FMT_GREY,
251 	},
252 	.dst_formats = {
253 		V4L2_PIX_FMT_JPEG,
254 	},
255 };
256 
257 static const struct coda_video_device coda9_jpeg_decoder = {
258 	.name = "coda-jpeg-decoder",
259 	.type = CODA_INST_DECODER,
260 	.ops = &coda9_jpeg_decode_ops,
261 	.direct = true,
262 	.src_formats = {
263 		V4L2_PIX_FMT_JPEG,
264 	},
265 	.dst_formats = {
266 		V4L2_PIX_FMT_NV12,
267 		V4L2_PIX_FMT_YUV420,
268 		V4L2_PIX_FMT_YVU420,
269 		V4L2_PIX_FMT_YUV422P,
270 	},
271 };
272 
273 static const struct coda_video_device *codadx6_video_devices[] = {
274 	&coda_bit_encoder,
275 };
276 
277 static const struct coda_video_device *codahx4_video_devices[] = {
278 	&coda_bit_encoder,
279 	&coda_bit_decoder,
280 };
281 
282 static const struct coda_video_device *coda7_video_devices[] = {
283 	&coda_bit_jpeg_encoder,
284 	&coda_bit_jpeg_decoder,
285 	&coda_bit_encoder,
286 	&coda_bit_decoder,
287 };
288 
289 static const struct coda_video_device *coda9_video_devices[] = {
290 	&coda9_jpeg_encoder,
291 	&coda9_jpeg_decoder,
292 	&coda_bit_encoder,
293 	&coda_bit_decoder,
294 };
295 
296 /*
297  * Normalize all supported YUV 4:2:0 formats to the value used in the codec
298  * tables.
299  */
300 static u32 coda_format_normalize_yuv(u32 fourcc)
301 {
302 	switch (fourcc) {
303 	case V4L2_PIX_FMT_NV12:
304 	case V4L2_PIX_FMT_YUV420:
305 	case V4L2_PIX_FMT_YVU420:
306 	case V4L2_PIX_FMT_YUV422P:
307 	case V4L2_PIX_FMT_YUYV:
308 		return V4L2_PIX_FMT_YUV420;
309 	default:
310 		return fourcc;
311 	}
312 }
313 
314 static const struct coda_codec *coda_find_codec(struct coda_dev *dev,
315 						int src_fourcc, int dst_fourcc)
316 {
317 	const struct coda_codec *codecs = dev->devtype->codecs;
318 	int num_codecs = dev->devtype->num_codecs;
319 	int k;
320 
321 	src_fourcc = coda_format_normalize_yuv(src_fourcc);
322 	dst_fourcc = coda_format_normalize_yuv(dst_fourcc);
323 	if (src_fourcc == dst_fourcc)
324 		return NULL;
325 
326 	for (k = 0; k < num_codecs; k++) {
327 		if (codecs[k].src_fourcc == src_fourcc &&
328 		    codecs[k].dst_fourcc == dst_fourcc)
329 			break;
330 	}
331 
332 	if (k == num_codecs)
333 		return NULL;
334 
335 	return &codecs[k];
336 }
337 
338 static void coda_get_max_dimensions(struct coda_dev *dev,
339 				    const struct coda_codec *codec,
340 				    int *max_w, int *max_h)
341 {
342 	const struct coda_codec *codecs = dev->devtype->codecs;
343 	int num_codecs = dev->devtype->num_codecs;
344 	unsigned int w, h;
345 	int k;
346 
347 	if (codec) {
348 		w = codec->max_w;
349 		h = codec->max_h;
350 	} else {
351 		for (k = 0, w = 0, h = 0; k < num_codecs; k++) {
352 			w = max(w, codecs[k].max_w);
353 			h = max(h, codecs[k].max_h);
354 		}
355 	}
356 
357 	if (max_w)
358 		*max_w = w;
359 	if (max_h)
360 		*max_h = h;
361 }
362 
363 static const struct coda_video_device *to_coda_video_device(struct video_device
364 							    *vdev)
365 {
366 	struct coda_dev *dev = video_get_drvdata(vdev);
367 	unsigned int i = vdev - dev->vfd;
368 
369 	if (i >= dev->devtype->num_vdevs)
370 		return NULL;
371 
372 	return dev->devtype->vdevs[i];
373 }
374 
375 const char *coda_product_name(int product)
376 {
377 	static char buf[9];
378 
379 	switch (product) {
380 	case CODA_DX6:
381 		return "CodaDx6";
382 	case CODA_HX4:
383 		return "CodaHx4";
384 	case CODA_7541:
385 		return "CODA7541";
386 	case CODA_960:
387 		return "CODA960";
388 	default:
389 		snprintf(buf, sizeof(buf), "(0x%04x)", product);
390 		return buf;
391 	}
392 }
393 
394 static struct vdoa_data *coda_get_vdoa_data(void)
395 {
396 	struct device_node *vdoa_node;
397 	struct platform_device *vdoa_pdev;
398 	struct vdoa_data *vdoa_data = NULL;
399 
400 	vdoa_node = of_find_compatible_node(NULL, NULL, "fsl,imx6q-vdoa");
401 	if (!vdoa_node)
402 		return NULL;
403 
404 	vdoa_pdev = of_find_device_by_node(vdoa_node);
405 	if (!vdoa_pdev)
406 		goto out;
407 
408 	vdoa_data = platform_get_drvdata(vdoa_pdev);
409 	if (!vdoa_data)
410 		vdoa_data = ERR_PTR(-EPROBE_DEFER);
411 
412 	put_device(&vdoa_pdev->dev);
413 out:
414 	of_node_put(vdoa_node);
415 
416 	return vdoa_data;
417 }
418 
419 /*
420  * V4L2 ioctl() operations.
421  */
422 static int coda_querycap(struct file *file, void *priv,
423 			 struct v4l2_capability *cap)
424 {
425 	struct coda_ctx *ctx = fh_to_ctx(priv);
426 
427 	strscpy(cap->driver, CODA_NAME, sizeof(cap->driver));
428 	strscpy(cap->card, coda_product_name(ctx->dev->devtype->product),
429 		sizeof(cap->card));
430 	strscpy(cap->bus_info, "platform:" CODA_NAME, sizeof(cap->bus_info));
431 	return 0;
432 }
433 
434 static const u32 coda_formats_420[CODA_MAX_FORMATS] = {
435 		V4L2_PIX_FMT_NV12,
436 		V4L2_PIX_FMT_YUV420,
437 		V4L2_PIX_FMT_YVU420,
438 };
439 
440 static int coda_enum_fmt(struct file *file, void *priv,
441 			 struct v4l2_fmtdesc *f)
442 {
443 	struct video_device *vdev = video_devdata(file);
444 	const struct coda_video_device *cvd = to_coda_video_device(vdev);
445 	struct coda_ctx *ctx = fh_to_ctx(priv);
446 	const u32 *formats;
447 
448 	if (f->type == V4L2_BUF_TYPE_VIDEO_OUTPUT)
449 		formats = cvd->src_formats;
450 	else if (f->type == V4L2_BUF_TYPE_VIDEO_CAPTURE) {
451 		struct coda_q_data *q_data_src;
452 		struct vb2_queue *src_vq;
453 
454 		formats = cvd->dst_formats;
455 
456 		/*
457 		 * If the source format is already fixed, only allow the same
458 		 * chroma subsampling.
459 		 */
460 		q_data_src = get_q_data(ctx, V4L2_BUF_TYPE_VIDEO_OUTPUT);
461 		src_vq = v4l2_m2m_get_vq(ctx->fh.m2m_ctx,
462 					 V4L2_BUF_TYPE_VIDEO_OUTPUT);
463 		if (q_data_src->fourcc == V4L2_PIX_FMT_JPEG &&
464 		    vb2_is_streaming(src_vq)) {
465 			if (ctx->params.jpeg_chroma_subsampling ==
466 			    V4L2_JPEG_CHROMA_SUBSAMPLING_420) {
467 				formats = coda_formats_420;
468 			} else if (ctx->params.jpeg_chroma_subsampling ==
469 				   V4L2_JPEG_CHROMA_SUBSAMPLING_422) {
470 				f->pixelformat = V4L2_PIX_FMT_YUV422P;
471 				return f->index ? -EINVAL : 0;
472 			}
473 		}
474 	} else {
475 		return -EINVAL;
476 	}
477 
478 	if (f->index >= CODA_MAX_FORMATS || formats[f->index] == 0)
479 		return -EINVAL;
480 
481 	/* Skip YUYV if the vdoa is not available */
482 	if (!ctx->vdoa && f->type == V4L2_BUF_TYPE_VIDEO_CAPTURE &&
483 	    formats[f->index] == V4L2_PIX_FMT_YUYV)
484 		return -EINVAL;
485 
486 	f->pixelformat = formats[f->index];
487 
488 	return 0;
489 }
490 
491 static int coda_g_fmt(struct file *file, void *priv,
492 		      struct v4l2_format *f)
493 {
494 	struct coda_q_data *q_data;
495 	struct coda_ctx *ctx = fh_to_ctx(priv);
496 
497 	q_data = get_q_data(ctx, f->type);
498 	if (!q_data)
499 		return -EINVAL;
500 
501 	f->fmt.pix.field	= V4L2_FIELD_NONE;
502 	f->fmt.pix.pixelformat	= q_data->fourcc;
503 	f->fmt.pix.width	= q_data->width;
504 	f->fmt.pix.height	= q_data->height;
505 	f->fmt.pix.bytesperline = q_data->bytesperline;
506 
507 	f->fmt.pix.sizeimage	= q_data->sizeimage;
508 	f->fmt.pix.colorspace	= ctx->colorspace;
509 	f->fmt.pix.xfer_func	= ctx->xfer_func;
510 	f->fmt.pix.ycbcr_enc	= ctx->ycbcr_enc;
511 	f->fmt.pix.quantization	= ctx->quantization;
512 
513 	return 0;
514 }
515 
516 static int coda_try_pixelformat(struct coda_ctx *ctx, struct v4l2_format *f)
517 {
518 	struct coda_q_data *q_data;
519 	const u32 *formats;
520 	int i;
521 
522 	if (f->type == V4L2_BUF_TYPE_VIDEO_OUTPUT)
523 		formats = ctx->cvd->src_formats;
524 	else if (f->type == V4L2_BUF_TYPE_VIDEO_CAPTURE)
525 		formats = ctx->cvd->dst_formats;
526 	else
527 		return -EINVAL;
528 
529 	for (i = 0; i < CODA_MAX_FORMATS; i++) {
530 		/* Skip YUYV if the vdoa is not available */
531 		if (!ctx->vdoa && f->type == V4L2_BUF_TYPE_VIDEO_CAPTURE &&
532 		    formats[i] == V4L2_PIX_FMT_YUYV)
533 			continue;
534 
535 		if (formats[i] == f->fmt.pix.pixelformat) {
536 			f->fmt.pix.pixelformat = formats[i];
537 			return 0;
538 		}
539 	}
540 
541 	/* Fall back to currently set pixelformat */
542 	q_data = get_q_data(ctx, f->type);
543 	f->fmt.pix.pixelformat = q_data->fourcc;
544 
545 	return 0;
546 }
547 
548 static int coda_try_fmt_vdoa(struct coda_ctx *ctx, struct v4l2_format *f,
549 			     bool *use_vdoa)
550 {
551 	int err;
552 
553 	if (f->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
554 		return -EINVAL;
555 
556 	if (!use_vdoa)
557 		return -EINVAL;
558 
559 	if (!ctx->vdoa) {
560 		*use_vdoa = false;
561 		return 0;
562 	}
563 
564 	err = vdoa_context_configure(NULL, round_up(f->fmt.pix.width, 16),
565 				     f->fmt.pix.height, f->fmt.pix.pixelformat);
566 	if (err) {
567 		*use_vdoa = false;
568 		return 0;
569 	}
570 
571 	*use_vdoa = true;
572 	return 0;
573 }
574 
575 static unsigned int coda_estimate_sizeimage(struct coda_ctx *ctx, u32 sizeimage,
576 					    u32 width, u32 height)
577 {
578 	/*
579 	 * This is a rough estimate for sensible compressed buffer
580 	 * sizes (between 1 and 16 bits per pixel). This could be
581 	 * improved by better format specific worst case estimates.
582 	 */
583 	return round_up(clamp(sizeimage, width * height / 8,
584 					 width * height * 2), PAGE_SIZE);
585 }
586 
587 static int coda_try_fmt(struct coda_ctx *ctx, const struct coda_codec *codec,
588 			struct v4l2_format *f)
589 {
590 	struct coda_dev *dev = ctx->dev;
591 	unsigned int max_w, max_h;
592 	enum v4l2_field field;
593 
594 	field = f->fmt.pix.field;
595 	if (field == V4L2_FIELD_ANY)
596 		field = V4L2_FIELD_NONE;
597 	else if (V4L2_FIELD_NONE != field)
598 		return -EINVAL;
599 
600 	/* V4L2 specification suggests the driver corrects the format struct
601 	 * if any of the dimensions is unsupported */
602 	f->fmt.pix.field = field;
603 
604 	coda_get_max_dimensions(dev, codec, &max_w, &max_h);
605 	v4l_bound_align_image(&f->fmt.pix.width, MIN_W, max_w, W_ALIGN,
606 			      &f->fmt.pix.height, MIN_H, max_h, H_ALIGN,
607 			      S_ALIGN);
608 
609 	switch (f->fmt.pix.pixelformat) {
610 	case V4L2_PIX_FMT_NV12:
611 	case V4L2_PIX_FMT_YUV420:
612 	case V4L2_PIX_FMT_YVU420:
613 		/*
614 		 * Frame stride must be at least multiple of 8,
615 		 * but multiple of 16 for h.264 or JPEG 4:2:x
616 		 */
617 		f->fmt.pix.bytesperline = round_up(f->fmt.pix.width, 16);
618 		f->fmt.pix.sizeimage = f->fmt.pix.bytesperline *
619 					f->fmt.pix.height * 3 / 2;
620 		break;
621 	case V4L2_PIX_FMT_YUYV:
622 		f->fmt.pix.bytesperline = round_up(f->fmt.pix.width, 16) * 2;
623 		f->fmt.pix.sizeimage = f->fmt.pix.bytesperline *
624 					f->fmt.pix.height;
625 		break;
626 	case V4L2_PIX_FMT_YUV422P:
627 		f->fmt.pix.bytesperline = round_up(f->fmt.pix.width, 16);
628 		f->fmt.pix.sizeimage = f->fmt.pix.bytesperline *
629 					f->fmt.pix.height * 2;
630 		break;
631 	case V4L2_PIX_FMT_GREY:
632 		/* keep 16 pixel alignment of 8-bit pixel data */
633 		f->fmt.pix.bytesperline = round_up(f->fmt.pix.width, 16);
634 		f->fmt.pix.sizeimage = f->fmt.pix.bytesperline * f->fmt.pix.height;
635 		break;
636 	case V4L2_PIX_FMT_JPEG:
637 	case V4L2_PIX_FMT_H264:
638 	case V4L2_PIX_FMT_MPEG4:
639 	case V4L2_PIX_FMT_MPEG2:
640 		f->fmt.pix.bytesperline = 0;
641 		f->fmt.pix.sizeimage = coda_estimate_sizeimage(ctx,
642 							f->fmt.pix.sizeimage,
643 							f->fmt.pix.width,
644 							f->fmt.pix.height);
645 		break;
646 	default:
647 		BUG();
648 	}
649 
650 	return 0;
651 }
652 
653 static int coda_try_fmt_vid_cap(struct file *file, void *priv,
654 				struct v4l2_format *f)
655 {
656 	struct coda_ctx *ctx = fh_to_ctx(priv);
657 	const struct coda_q_data *q_data_src;
658 	const struct coda_codec *codec;
659 	struct vb2_queue *src_vq;
660 	int hscale = 0;
661 	int vscale = 0;
662 	int ret;
663 	bool use_vdoa;
664 
665 	ret = coda_try_pixelformat(ctx, f);
666 	if (ret < 0)
667 		return ret;
668 
669 	q_data_src = get_q_data(ctx, V4L2_BUF_TYPE_VIDEO_OUTPUT);
670 
671 	/*
672 	 * If the source format is already fixed, only allow the same output
673 	 * resolution. When decoding JPEG images, we also have to make sure to
674 	 * use the same chroma subsampling.
675 	 */
676 	src_vq = v4l2_m2m_get_vq(ctx->fh.m2m_ctx, V4L2_BUF_TYPE_VIDEO_OUTPUT);
677 	if (vb2_is_streaming(src_vq)) {
678 		if (q_data_src->fourcc == V4L2_PIX_FMT_JPEG &&
679 		    ctx->dev->devtype->product == CODA_960) {
680 			hscale = coda_jpeg_scale(q_data_src->width, f->fmt.pix.width);
681 			vscale = coda_jpeg_scale(q_data_src->height, f->fmt.pix.height);
682 		}
683 		f->fmt.pix.width = q_data_src->width >> hscale;
684 		f->fmt.pix.height = q_data_src->height >> vscale;
685 
686 		if (q_data_src->fourcc == V4L2_PIX_FMT_JPEG) {
687 			if (ctx->params.jpeg_chroma_subsampling ==
688 			    V4L2_JPEG_CHROMA_SUBSAMPLING_420 &&
689 			    f->fmt.pix.pixelformat == V4L2_PIX_FMT_YUV422P)
690 				f->fmt.pix.pixelformat = V4L2_PIX_FMT_NV12;
691 			else if (ctx->params.jpeg_chroma_subsampling ==
692 				 V4L2_JPEG_CHROMA_SUBSAMPLING_422)
693 				f->fmt.pix.pixelformat = V4L2_PIX_FMT_YUV422P;
694 		}
695 	}
696 
697 	f->fmt.pix.colorspace = ctx->colorspace;
698 	f->fmt.pix.xfer_func = ctx->xfer_func;
699 	f->fmt.pix.ycbcr_enc = ctx->ycbcr_enc;
700 	f->fmt.pix.quantization = ctx->quantization;
701 
702 	q_data_src = get_q_data(ctx, V4L2_BUF_TYPE_VIDEO_OUTPUT);
703 	codec = coda_find_codec(ctx->dev, q_data_src->fourcc,
704 				f->fmt.pix.pixelformat);
705 	if (!codec)
706 		return -EINVAL;
707 
708 	ret = coda_try_fmt(ctx, codec, f);
709 	if (ret < 0)
710 		return ret;
711 
712 	/* The decoders always write complete macroblocks or MCUs */
713 	if (ctx->inst_type == CODA_INST_DECODER) {
714 		f->fmt.pix.bytesperline = round_up(f->fmt.pix.width, 16 >> hscale);
715 		f->fmt.pix.height = round_up(f->fmt.pix.height, 16 >> vscale);
716 		if (codec->src_fourcc == V4L2_PIX_FMT_JPEG &&
717 		    f->fmt.pix.pixelformat == V4L2_PIX_FMT_YUV422P) {
718 			f->fmt.pix.sizeimage = f->fmt.pix.bytesperline *
719 					       f->fmt.pix.height * 2;
720 		} else {
721 			f->fmt.pix.sizeimage = f->fmt.pix.bytesperline *
722 					       f->fmt.pix.height * 3 / 2;
723 		}
724 
725 		ret = coda_try_fmt_vdoa(ctx, f, &use_vdoa);
726 		if (ret < 0)
727 			return ret;
728 
729 		if (f->fmt.pix.pixelformat == V4L2_PIX_FMT_YUYV) {
730 			if (!use_vdoa)
731 				return -EINVAL;
732 
733 			f->fmt.pix.bytesperline = round_up(f->fmt.pix.width, 16) * 2;
734 			f->fmt.pix.sizeimage = f->fmt.pix.bytesperline *
735 				f->fmt.pix.height;
736 		}
737 	}
738 
739 	return 0;
740 }
741 
742 static void coda_set_default_colorspace(struct v4l2_pix_format *fmt)
743 {
744 	enum v4l2_colorspace colorspace;
745 
746 	if (fmt->pixelformat == V4L2_PIX_FMT_JPEG)
747 		colorspace = V4L2_COLORSPACE_JPEG;
748 	else if (fmt->width <= 720 && fmt->height <= 576)
749 		colorspace = V4L2_COLORSPACE_SMPTE170M;
750 	else
751 		colorspace = V4L2_COLORSPACE_REC709;
752 
753 	fmt->colorspace = colorspace;
754 	fmt->xfer_func = V4L2_XFER_FUNC_DEFAULT;
755 	fmt->ycbcr_enc = V4L2_YCBCR_ENC_DEFAULT;
756 	fmt->quantization = V4L2_QUANTIZATION_DEFAULT;
757 }
758 
759 static int coda_try_fmt_vid_out(struct file *file, void *priv,
760 				struct v4l2_format *f)
761 {
762 	struct coda_ctx *ctx = fh_to_ctx(priv);
763 	struct coda_dev *dev = ctx->dev;
764 	const struct coda_q_data *q_data_dst;
765 	const struct coda_codec *codec;
766 	int ret;
767 
768 	ret = coda_try_pixelformat(ctx, f);
769 	if (ret < 0)
770 		return ret;
771 
772 	if (f->fmt.pix.colorspace == V4L2_COLORSPACE_DEFAULT)
773 		coda_set_default_colorspace(&f->fmt.pix);
774 
775 	q_data_dst = get_q_data(ctx, V4L2_BUF_TYPE_VIDEO_CAPTURE);
776 	codec = coda_find_codec(dev, f->fmt.pix.pixelformat, q_data_dst->fourcc);
777 
778 	return coda_try_fmt(ctx, codec, f);
779 }
780 
781 static int coda_s_fmt(struct coda_ctx *ctx, struct v4l2_format *f,
782 		      struct v4l2_rect *r)
783 {
784 	struct coda_q_data *q_data;
785 	struct vb2_queue *vq;
786 
787 	vq = v4l2_m2m_get_vq(ctx->fh.m2m_ctx, f->type);
788 	if (!vq)
789 		return -EINVAL;
790 
791 	q_data = get_q_data(ctx, f->type);
792 	if (!q_data)
793 		return -EINVAL;
794 
795 	if (vb2_is_busy(vq)) {
796 		v4l2_err(&ctx->dev->v4l2_dev, "%s: %s queue busy: %d\n",
797 			 __func__, v4l2_type_names[f->type], vq->num_buffers);
798 		return -EBUSY;
799 	}
800 
801 	q_data->fourcc = f->fmt.pix.pixelformat;
802 	q_data->width = f->fmt.pix.width;
803 	q_data->height = f->fmt.pix.height;
804 	q_data->bytesperline = f->fmt.pix.bytesperline;
805 	q_data->sizeimage = f->fmt.pix.sizeimage;
806 	if (r) {
807 		q_data->rect = *r;
808 	} else {
809 		q_data->rect.left = 0;
810 		q_data->rect.top = 0;
811 		q_data->rect.width = f->fmt.pix.width;
812 		q_data->rect.height = f->fmt.pix.height;
813 	}
814 
815 	switch (f->fmt.pix.pixelformat) {
816 	case V4L2_PIX_FMT_YUYV:
817 		ctx->tiled_map_type = GDI_TILED_FRAME_MB_RASTER_MAP;
818 		break;
819 	case V4L2_PIX_FMT_NV12:
820 		if (!disable_tiling && ctx->use_bit &&
821 		    ctx->dev->devtype->product == CODA_960) {
822 			ctx->tiled_map_type = GDI_TILED_FRAME_MB_RASTER_MAP;
823 			break;
824 		}
825 		fallthrough;
826 	case V4L2_PIX_FMT_YUV420:
827 	case V4L2_PIX_FMT_YVU420:
828 	case V4L2_PIX_FMT_YUV422P:
829 		ctx->tiled_map_type = GDI_LINEAR_FRAME_MAP;
830 		break;
831 	default:
832 		break;
833 	}
834 
835 	if (ctx->tiled_map_type == GDI_TILED_FRAME_MB_RASTER_MAP &&
836 	    !coda_try_fmt_vdoa(ctx, f, &ctx->use_vdoa) &&
837 	    ctx->use_vdoa)
838 		vdoa_context_configure(ctx->vdoa,
839 				       round_up(f->fmt.pix.width, 16),
840 				       f->fmt.pix.height,
841 				       f->fmt.pix.pixelformat);
842 	else
843 		ctx->use_vdoa = false;
844 
845 	coda_dbg(1, ctx, "Setting %s format, wxh: %dx%d, fmt: %4.4s %c\n",
846 		 v4l2_type_names[f->type], q_data->width, q_data->height,
847 		 (char *)&q_data->fourcc,
848 		 (ctx->tiled_map_type == GDI_LINEAR_FRAME_MAP) ? 'L' : 'T');
849 
850 	return 0;
851 }
852 
853 static int coda_s_fmt_vid_cap(struct file *file, void *priv,
854 			      struct v4l2_format *f)
855 {
856 	struct coda_ctx *ctx = fh_to_ctx(priv);
857 	struct coda_q_data *q_data_src;
858 	const struct coda_codec *codec;
859 	struct v4l2_rect r;
860 	int hscale = 0;
861 	int vscale = 0;
862 	int ret;
863 
864 	q_data_src = get_q_data(ctx, V4L2_BUF_TYPE_VIDEO_OUTPUT);
865 
866 	if (q_data_src->fourcc == V4L2_PIX_FMT_JPEG &&
867 	    ctx->dev->devtype->product == CODA_960) {
868 		hscale = coda_jpeg_scale(q_data_src->width, f->fmt.pix.width);
869 		vscale = coda_jpeg_scale(q_data_src->height, f->fmt.pix.height);
870 	}
871 
872 	ret = coda_try_fmt_vid_cap(file, priv, f);
873 	if (ret)
874 		return ret;
875 
876 	r.left = 0;
877 	r.top = 0;
878 	r.width = q_data_src->width >> hscale;
879 	r.height = q_data_src->height >> vscale;
880 
881 	ret = coda_s_fmt(ctx, f, &r);
882 	if (ret)
883 		return ret;
884 
885 	if (ctx->inst_type != CODA_INST_ENCODER)
886 		return 0;
887 
888 	/* Setting the coded format determines the selected codec */
889 	codec = coda_find_codec(ctx->dev, q_data_src->fourcc,
890 				f->fmt.pix.pixelformat);
891 	if (!codec) {
892 		v4l2_err(&ctx->dev->v4l2_dev, "failed to determine codec\n");
893 		return -EINVAL;
894 	}
895 	ctx->codec = codec;
896 
897 	ctx->colorspace = f->fmt.pix.colorspace;
898 	ctx->xfer_func = f->fmt.pix.xfer_func;
899 	ctx->ycbcr_enc = f->fmt.pix.ycbcr_enc;
900 	ctx->quantization = f->fmt.pix.quantization;
901 
902 	return 0;
903 }
904 
905 static int coda_s_fmt_vid_out(struct file *file, void *priv,
906 			      struct v4l2_format *f)
907 {
908 	struct coda_ctx *ctx = fh_to_ctx(priv);
909 	const struct coda_codec *codec;
910 	struct v4l2_format f_cap;
911 	struct vb2_queue *dst_vq;
912 	int ret;
913 
914 	ret = coda_try_fmt_vid_out(file, priv, f);
915 	if (ret)
916 		return ret;
917 
918 	ret = coda_s_fmt(ctx, f, NULL);
919 	if (ret)
920 		return ret;
921 
922 	ctx->colorspace = f->fmt.pix.colorspace;
923 	ctx->xfer_func = f->fmt.pix.xfer_func;
924 	ctx->ycbcr_enc = f->fmt.pix.ycbcr_enc;
925 	ctx->quantization = f->fmt.pix.quantization;
926 
927 	if (ctx->inst_type != CODA_INST_DECODER)
928 		return 0;
929 
930 	/* Setting the coded format determines the selected codec */
931 	codec = coda_find_codec(ctx->dev, f->fmt.pix.pixelformat,
932 				V4L2_PIX_FMT_YUV420);
933 	if (!codec) {
934 		v4l2_err(&ctx->dev->v4l2_dev, "failed to determine codec\n");
935 		return -EINVAL;
936 	}
937 	ctx->codec = codec;
938 
939 	dst_vq = v4l2_m2m_get_vq(ctx->fh.m2m_ctx, V4L2_BUF_TYPE_VIDEO_CAPTURE);
940 	if (!dst_vq)
941 		return -EINVAL;
942 
943 	/*
944 	 * Setting the capture queue format is not possible while the capture
945 	 * queue is still busy. This is not an error, but the user will have to
946 	 * make sure themselves that the capture format is set correctly before
947 	 * starting the output queue again.
948 	 */
949 	if (vb2_is_busy(dst_vq))
950 		return 0;
951 
952 	memset(&f_cap, 0, sizeof(f_cap));
953 	f_cap.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
954 	coda_g_fmt(file, priv, &f_cap);
955 	f_cap.fmt.pix.width = f->fmt.pix.width;
956 	f_cap.fmt.pix.height = f->fmt.pix.height;
957 
958 	return coda_s_fmt_vid_cap(file, priv, &f_cap);
959 }
960 
961 static int coda_reqbufs(struct file *file, void *priv,
962 			struct v4l2_requestbuffers *rb)
963 {
964 	struct coda_ctx *ctx = fh_to_ctx(priv);
965 	int ret;
966 
967 	ret = v4l2_m2m_reqbufs(file, ctx->fh.m2m_ctx, rb);
968 	if (ret)
969 		return ret;
970 
971 	/*
972 	 * Allow to allocate instance specific per-context buffers, such as
973 	 * bitstream ringbuffer, slice buffer, work buffer, etc. if needed.
974 	 */
975 	if (rb->type == V4L2_BUF_TYPE_VIDEO_OUTPUT && ctx->ops->reqbufs)
976 		return ctx->ops->reqbufs(ctx, rb);
977 
978 	return 0;
979 }
980 
981 static int coda_qbuf(struct file *file, void *priv,
982 		     struct v4l2_buffer *buf)
983 {
984 	struct coda_ctx *ctx = fh_to_ctx(priv);
985 
986 	if (ctx->inst_type == CODA_INST_DECODER &&
987 	    buf->type == V4L2_BUF_TYPE_VIDEO_OUTPUT)
988 		buf->flags &= ~V4L2_BUF_FLAG_LAST;
989 
990 	return v4l2_m2m_qbuf(file, ctx->fh.m2m_ctx, buf);
991 }
992 
993 static int coda_dqbuf(struct file *file, void *priv, struct v4l2_buffer *buf)
994 {
995 	struct coda_ctx *ctx = fh_to_ctx(priv);
996 	int ret;
997 
998 	ret = v4l2_m2m_dqbuf(file, ctx->fh.m2m_ctx, buf);
999 
1000 	if (ctx->inst_type == CODA_INST_DECODER &&
1001 	    buf->type == V4L2_BUF_TYPE_VIDEO_OUTPUT)
1002 		buf->flags &= ~V4L2_BUF_FLAG_LAST;
1003 
1004 	return ret;
1005 }
1006 
1007 void coda_m2m_buf_done(struct coda_ctx *ctx, struct vb2_v4l2_buffer *buf,
1008 		       enum vb2_buffer_state state)
1009 {
1010 	const struct v4l2_event eos_event = {
1011 		.type = V4L2_EVENT_EOS
1012 	};
1013 
1014 	if (buf->flags & V4L2_BUF_FLAG_LAST)
1015 		v4l2_event_queue_fh(&ctx->fh, &eos_event);
1016 
1017 	v4l2_m2m_buf_done(buf, state);
1018 }
1019 
1020 static int coda_g_selection(struct file *file, void *fh,
1021 			    struct v4l2_selection *s)
1022 {
1023 	struct coda_ctx *ctx = fh_to_ctx(fh);
1024 	struct coda_q_data *q_data;
1025 	struct v4l2_rect r, *rsel;
1026 
1027 	q_data = get_q_data(ctx, s->type);
1028 	if (!q_data)
1029 		return -EINVAL;
1030 
1031 	r.left = 0;
1032 	r.top = 0;
1033 	r.width = q_data->width;
1034 	r.height = q_data->height;
1035 	rsel = &q_data->rect;
1036 
1037 	switch (s->target) {
1038 	case V4L2_SEL_TGT_CROP_DEFAULT:
1039 	case V4L2_SEL_TGT_CROP_BOUNDS:
1040 		rsel = &r;
1041 		fallthrough;
1042 	case V4L2_SEL_TGT_CROP:
1043 		if (s->type != V4L2_BUF_TYPE_VIDEO_OUTPUT ||
1044 		    ctx->inst_type == CODA_INST_DECODER)
1045 			return -EINVAL;
1046 		break;
1047 	case V4L2_SEL_TGT_COMPOSE_BOUNDS:
1048 	case V4L2_SEL_TGT_COMPOSE_PADDED:
1049 		rsel = &r;
1050 		fallthrough;
1051 	case V4L2_SEL_TGT_COMPOSE:
1052 	case V4L2_SEL_TGT_COMPOSE_DEFAULT:
1053 		if (s->type != V4L2_BUF_TYPE_VIDEO_CAPTURE ||
1054 		    ctx->inst_type == CODA_INST_ENCODER)
1055 			return -EINVAL;
1056 		break;
1057 	default:
1058 		return -EINVAL;
1059 	}
1060 
1061 	s->r = *rsel;
1062 
1063 	return 0;
1064 }
1065 
1066 static int coda_s_selection(struct file *file, void *fh,
1067 			    struct v4l2_selection *s)
1068 {
1069 	struct coda_ctx *ctx = fh_to_ctx(fh);
1070 	struct coda_q_data *q_data;
1071 
1072 	switch (s->target) {
1073 	case V4L2_SEL_TGT_CROP:
1074 		if (ctx->inst_type == CODA_INST_ENCODER &&
1075 		    s->type == V4L2_BUF_TYPE_VIDEO_OUTPUT) {
1076 			q_data = get_q_data(ctx, s->type);
1077 			if (!q_data)
1078 				return -EINVAL;
1079 
1080 			s->r.left = 0;
1081 			s->r.top = 0;
1082 			s->r.width = clamp(s->r.width, 2U, q_data->width);
1083 			s->r.height = clamp(s->r.height, 2U, q_data->height);
1084 
1085 			if (s->flags & V4L2_SEL_FLAG_LE) {
1086 				s->r.width = round_up(s->r.width, 2);
1087 				s->r.height = round_up(s->r.height, 2);
1088 			} else {
1089 				s->r.width = round_down(s->r.width, 2);
1090 				s->r.height = round_down(s->r.height, 2);
1091 			}
1092 
1093 			q_data->rect = s->r;
1094 
1095 			coda_dbg(1, ctx, "Setting crop rectangle: %dx%d\n",
1096 				 s->r.width, s->r.height);
1097 
1098 			return 0;
1099 		}
1100 		fallthrough;
1101 	case V4L2_SEL_TGT_NATIVE_SIZE:
1102 	case V4L2_SEL_TGT_COMPOSE:
1103 		return coda_g_selection(file, fh, s);
1104 	default:
1105 		/* v4l2-compliance expects this to fail for read-only targets */
1106 		return -EINVAL;
1107 	}
1108 }
1109 
1110 static void coda_wake_up_capture_queue(struct coda_ctx *ctx)
1111 {
1112 	struct vb2_queue *dst_vq;
1113 
1114 	coda_dbg(1, ctx, "waking up capture queue\n");
1115 
1116 	dst_vq = v4l2_m2m_get_vq(ctx->fh.m2m_ctx, V4L2_BUF_TYPE_VIDEO_CAPTURE);
1117 	dst_vq->last_buffer_dequeued = true;
1118 	wake_up(&dst_vq->done_wq);
1119 }
1120 
1121 static int coda_encoder_cmd(struct file *file, void *fh,
1122 			    struct v4l2_encoder_cmd *ec)
1123 {
1124 	struct coda_ctx *ctx = fh_to_ctx(fh);
1125 	struct vb2_v4l2_buffer *buf;
1126 	int ret;
1127 
1128 	ret = v4l2_m2m_ioctl_try_encoder_cmd(file, fh, ec);
1129 	if (ret < 0)
1130 		return ret;
1131 
1132 	mutex_lock(&ctx->wakeup_mutex);
1133 	buf = v4l2_m2m_last_src_buf(ctx->fh.m2m_ctx);
1134 	if (buf) {
1135 		/*
1136 		 * If the last output buffer is still on the queue, make sure
1137 		 * that decoder finish_run will see the last flag and report it
1138 		 * to userspace.
1139 		 */
1140 		buf->flags |= V4L2_BUF_FLAG_LAST;
1141 	} else {
1142 		/* Set the stream-end flag on this context */
1143 		ctx->bit_stream_param |= CODA_BIT_STREAM_END_FLAG;
1144 
1145 		/*
1146 		 * If the last output buffer has already been taken from the
1147 		 * queue, wake up the capture queue and signal end of stream
1148 		 * via the -EPIPE mechanism.
1149 		 */
1150 		coda_wake_up_capture_queue(ctx);
1151 	}
1152 	mutex_unlock(&ctx->wakeup_mutex);
1153 
1154 	return 0;
1155 }
1156 
1157 static bool coda_mark_last_meta(struct coda_ctx *ctx)
1158 {
1159 	struct coda_buffer_meta *meta;
1160 
1161 	coda_dbg(1, ctx, "marking last meta\n");
1162 
1163 	spin_lock(&ctx->buffer_meta_lock);
1164 	if (list_empty(&ctx->buffer_meta_list)) {
1165 		spin_unlock(&ctx->buffer_meta_lock);
1166 		return false;
1167 	}
1168 
1169 	meta = list_last_entry(&ctx->buffer_meta_list, struct coda_buffer_meta,
1170 			       list);
1171 	meta->last = true;
1172 
1173 	spin_unlock(&ctx->buffer_meta_lock);
1174 	return true;
1175 }
1176 
1177 static bool coda_mark_last_dst_buf(struct coda_ctx *ctx)
1178 {
1179 	struct vb2_v4l2_buffer *buf;
1180 	struct vb2_buffer *dst_vb;
1181 	struct vb2_queue *dst_vq;
1182 	unsigned long flags;
1183 
1184 	coda_dbg(1, ctx, "marking last capture buffer\n");
1185 
1186 	dst_vq = v4l2_m2m_get_vq(ctx->fh.m2m_ctx, V4L2_BUF_TYPE_VIDEO_CAPTURE);
1187 	spin_lock_irqsave(&dst_vq->done_lock, flags);
1188 	if (list_empty(&dst_vq->done_list)) {
1189 		spin_unlock_irqrestore(&dst_vq->done_lock, flags);
1190 		return false;
1191 	}
1192 
1193 	dst_vb = list_last_entry(&dst_vq->done_list, struct vb2_buffer,
1194 				 done_entry);
1195 	buf = to_vb2_v4l2_buffer(dst_vb);
1196 	buf->flags |= V4L2_BUF_FLAG_LAST;
1197 
1198 	spin_unlock_irqrestore(&dst_vq->done_lock, flags);
1199 	return true;
1200 }
1201 
1202 static int coda_decoder_cmd(struct file *file, void *fh,
1203 			    struct v4l2_decoder_cmd *dc)
1204 {
1205 	struct coda_ctx *ctx = fh_to_ctx(fh);
1206 	struct coda_dev *dev = ctx->dev;
1207 	struct vb2_v4l2_buffer *buf;
1208 	struct vb2_queue *dst_vq;
1209 	bool stream_end;
1210 	bool wakeup;
1211 	int ret;
1212 
1213 	ret = v4l2_m2m_ioctl_try_decoder_cmd(file, fh, dc);
1214 	if (ret < 0)
1215 		return ret;
1216 
1217 	switch (dc->cmd) {
1218 	case V4L2_DEC_CMD_START:
1219 		mutex_lock(&dev->coda_mutex);
1220 		mutex_lock(&ctx->bitstream_mutex);
1221 		coda_bitstream_flush(ctx);
1222 		dst_vq = v4l2_m2m_get_vq(ctx->fh.m2m_ctx,
1223 					 V4L2_BUF_TYPE_VIDEO_CAPTURE);
1224 		vb2_clear_last_buffer_dequeued(dst_vq);
1225 		ctx->bit_stream_param &= ~CODA_BIT_STREAM_END_FLAG;
1226 		coda_fill_bitstream(ctx, NULL);
1227 		mutex_unlock(&ctx->bitstream_mutex);
1228 		mutex_unlock(&dev->coda_mutex);
1229 		break;
1230 	case V4L2_DEC_CMD_STOP:
1231 		stream_end = false;
1232 		wakeup = false;
1233 
1234 		mutex_lock(&ctx->wakeup_mutex);
1235 
1236 		buf = v4l2_m2m_last_src_buf(ctx->fh.m2m_ctx);
1237 		if (buf) {
1238 			coda_dbg(1, ctx, "marking last pending buffer\n");
1239 
1240 			/* Mark last buffer */
1241 			buf->flags |= V4L2_BUF_FLAG_LAST;
1242 
1243 			if (v4l2_m2m_num_src_bufs_ready(ctx->fh.m2m_ctx) == 0) {
1244 				coda_dbg(1, ctx, "all remaining buffers queued\n");
1245 				stream_end = true;
1246 			}
1247 		} else {
1248 			if (ctx->use_bit)
1249 				if (coda_mark_last_meta(ctx))
1250 					stream_end = true;
1251 				else
1252 					wakeup = true;
1253 			else
1254 				if (!coda_mark_last_dst_buf(ctx))
1255 					wakeup = true;
1256 		}
1257 
1258 		if (stream_end) {
1259 			coda_dbg(1, ctx, "all remaining buffers queued\n");
1260 
1261 			/* Set the stream-end flag on this context */
1262 			coda_bit_stream_end_flag(ctx);
1263 			ctx->hold = false;
1264 			v4l2_m2m_try_schedule(ctx->fh.m2m_ctx);
1265 		}
1266 
1267 		if (wakeup) {
1268 			/* If there is no buffer in flight, wake up */
1269 			coda_wake_up_capture_queue(ctx);
1270 		}
1271 
1272 		mutex_unlock(&ctx->wakeup_mutex);
1273 		break;
1274 	default:
1275 		return -EINVAL;
1276 	}
1277 
1278 	return 0;
1279 }
1280 
1281 static int coda_enum_framesizes(struct file *file, void *fh,
1282 				struct v4l2_frmsizeenum *fsize)
1283 {
1284 	struct coda_ctx *ctx = fh_to_ctx(fh);
1285 	struct coda_q_data *q_data_dst;
1286 	const struct coda_codec *codec;
1287 
1288 	if (fsize->index)
1289 		return -EINVAL;
1290 
1291 	if (coda_format_normalize_yuv(fsize->pixel_format) ==
1292 	    V4L2_PIX_FMT_YUV420) {
1293 		q_data_dst = get_q_data(ctx, V4L2_BUF_TYPE_VIDEO_CAPTURE);
1294 		codec = coda_find_codec(ctx->dev, fsize->pixel_format,
1295 					q_data_dst->fourcc);
1296 	} else {
1297 		codec = coda_find_codec(ctx->dev, V4L2_PIX_FMT_YUV420,
1298 					fsize->pixel_format);
1299 	}
1300 	if (!codec)
1301 		return -EINVAL;
1302 
1303 	fsize->type = V4L2_FRMSIZE_TYPE_CONTINUOUS;
1304 	fsize->stepwise.min_width = MIN_W;
1305 	fsize->stepwise.max_width = codec->max_w;
1306 	fsize->stepwise.step_width = 1;
1307 	fsize->stepwise.min_height = MIN_H;
1308 	fsize->stepwise.max_height = codec->max_h;
1309 	fsize->stepwise.step_height = 1;
1310 
1311 	return 0;
1312 }
1313 
1314 static int coda_enum_frameintervals(struct file *file, void *fh,
1315 				    struct v4l2_frmivalenum *f)
1316 {
1317 	struct coda_ctx *ctx = fh_to_ctx(fh);
1318 	struct coda_q_data *q_data;
1319 	const struct coda_codec *codec;
1320 
1321 	if (f->index)
1322 		return -EINVAL;
1323 
1324 	/* Disallow YUYV if the vdoa is not available */
1325 	if (!ctx->vdoa && f->pixel_format == V4L2_PIX_FMT_YUYV)
1326 		return -EINVAL;
1327 
1328 	if (coda_format_normalize_yuv(f->pixel_format) == V4L2_PIX_FMT_YUV420) {
1329 		q_data = get_q_data(ctx, V4L2_BUF_TYPE_VIDEO_CAPTURE);
1330 		codec = coda_find_codec(ctx->dev, f->pixel_format,
1331 					q_data->fourcc);
1332 	} else {
1333 		codec = coda_find_codec(ctx->dev, V4L2_PIX_FMT_YUV420,
1334 					f->pixel_format);
1335 	}
1336 	if (!codec)
1337 		return -EINVAL;
1338 
1339 	if (f->width < MIN_W || f->width > codec->max_w ||
1340 	    f->height < MIN_H || f->height > codec->max_h)
1341 		return -EINVAL;
1342 
1343 	f->type = V4L2_FRMIVAL_TYPE_CONTINUOUS;
1344 	f->stepwise.min.numerator = 1;
1345 	f->stepwise.min.denominator = 65535;
1346 	f->stepwise.max.numerator = 65536;
1347 	f->stepwise.max.denominator = 1;
1348 	f->stepwise.step.numerator = 1;
1349 	f->stepwise.step.denominator = 1;
1350 
1351 	return 0;
1352 }
1353 
1354 static int coda_g_parm(struct file *file, void *fh, struct v4l2_streamparm *a)
1355 {
1356 	struct coda_ctx *ctx = fh_to_ctx(fh);
1357 	struct v4l2_fract *tpf;
1358 
1359 	if (a->type != V4L2_BUF_TYPE_VIDEO_OUTPUT)
1360 		return -EINVAL;
1361 
1362 	a->parm.output.capability = V4L2_CAP_TIMEPERFRAME;
1363 	tpf = &a->parm.output.timeperframe;
1364 	tpf->denominator = ctx->params.framerate & CODA_FRATE_RES_MASK;
1365 	tpf->numerator = 1 + (ctx->params.framerate >>
1366 			      CODA_FRATE_DIV_OFFSET);
1367 
1368 	return 0;
1369 }
1370 
1371 /*
1372  * Approximate timeperframe v4l2_fract with values that can be written
1373  * into the 16-bit CODA_FRATE_DIV and CODA_FRATE_RES fields.
1374  */
1375 static void coda_approximate_timeperframe(struct v4l2_fract *timeperframe)
1376 {
1377 	struct v4l2_fract s = *timeperframe;
1378 	struct v4l2_fract f0;
1379 	struct v4l2_fract f1 = { 1, 0 };
1380 	struct v4l2_fract f2 = { 0, 1 };
1381 	unsigned int i, div, s_denominator;
1382 
1383 	/* Lower bound is 1/65535 */
1384 	if (s.numerator == 0 || s.denominator / s.numerator > 65535) {
1385 		timeperframe->numerator = 1;
1386 		timeperframe->denominator = 65535;
1387 		return;
1388 	}
1389 
1390 	/* Upper bound is 65536/1 */
1391 	if (s.denominator == 0 || s.numerator / s.denominator > 65536) {
1392 		timeperframe->numerator = 65536;
1393 		timeperframe->denominator = 1;
1394 		return;
1395 	}
1396 
1397 	/* Reduce fraction to lowest terms */
1398 	div = gcd(s.numerator, s.denominator);
1399 	if (div > 1) {
1400 		s.numerator /= div;
1401 		s.denominator /= div;
1402 	}
1403 
1404 	if (s.numerator <= 65536 && s.denominator < 65536) {
1405 		*timeperframe = s;
1406 		return;
1407 	}
1408 
1409 	/* Find successive convergents from continued fraction expansion */
1410 	while (f2.numerator <= 65536 && f2.denominator < 65536) {
1411 		f0 = f1;
1412 		f1 = f2;
1413 
1414 		/* Stop when f2 exactly equals timeperframe */
1415 		if (s.numerator == 0)
1416 			break;
1417 
1418 		i = s.denominator / s.numerator;
1419 
1420 		f2.numerator = f0.numerator + i * f1.numerator;
1421 		f2.denominator = f0.denominator + i * f2.denominator;
1422 
1423 		s_denominator = s.numerator;
1424 		s.numerator = s.denominator % s.numerator;
1425 		s.denominator = s_denominator;
1426 	}
1427 
1428 	*timeperframe = f1;
1429 }
1430 
1431 static uint32_t coda_timeperframe_to_frate(struct v4l2_fract *timeperframe)
1432 {
1433 	return ((timeperframe->numerator - 1) << CODA_FRATE_DIV_OFFSET) |
1434 		timeperframe->denominator;
1435 }
1436 
1437 static int coda_s_parm(struct file *file, void *fh, struct v4l2_streamparm *a)
1438 {
1439 	struct coda_ctx *ctx = fh_to_ctx(fh);
1440 	struct v4l2_fract *tpf;
1441 
1442 	if (a->type != V4L2_BUF_TYPE_VIDEO_OUTPUT)
1443 		return -EINVAL;
1444 
1445 	a->parm.output.capability = V4L2_CAP_TIMEPERFRAME;
1446 	tpf = &a->parm.output.timeperframe;
1447 	coda_approximate_timeperframe(tpf);
1448 	ctx->params.framerate = coda_timeperframe_to_frate(tpf);
1449 	ctx->params.framerate_changed = true;
1450 
1451 	return 0;
1452 }
1453 
1454 static int coda_subscribe_event(struct v4l2_fh *fh,
1455 				const struct v4l2_event_subscription *sub)
1456 {
1457 	struct coda_ctx *ctx = fh_to_ctx(fh);
1458 
1459 	switch (sub->type) {
1460 	case V4L2_EVENT_EOS:
1461 		return v4l2_event_subscribe(fh, sub, 0, NULL);
1462 	case V4L2_EVENT_SOURCE_CHANGE:
1463 		if (ctx->inst_type == CODA_INST_DECODER)
1464 			return v4l2_event_subscribe(fh, sub, 0, NULL);
1465 		else
1466 			return -EINVAL;
1467 	default:
1468 		return v4l2_ctrl_subscribe_event(fh, sub);
1469 	}
1470 }
1471 
1472 static const struct v4l2_ioctl_ops coda_ioctl_ops = {
1473 	.vidioc_querycap	= coda_querycap,
1474 
1475 	.vidioc_enum_fmt_vid_cap = coda_enum_fmt,
1476 	.vidioc_g_fmt_vid_cap	= coda_g_fmt,
1477 	.vidioc_try_fmt_vid_cap	= coda_try_fmt_vid_cap,
1478 	.vidioc_s_fmt_vid_cap	= coda_s_fmt_vid_cap,
1479 
1480 	.vidioc_enum_fmt_vid_out = coda_enum_fmt,
1481 	.vidioc_g_fmt_vid_out	= coda_g_fmt,
1482 	.vidioc_try_fmt_vid_out	= coda_try_fmt_vid_out,
1483 	.vidioc_s_fmt_vid_out	= coda_s_fmt_vid_out,
1484 
1485 	.vidioc_reqbufs		= coda_reqbufs,
1486 	.vidioc_querybuf	= v4l2_m2m_ioctl_querybuf,
1487 
1488 	.vidioc_qbuf		= coda_qbuf,
1489 	.vidioc_expbuf		= v4l2_m2m_ioctl_expbuf,
1490 	.vidioc_dqbuf		= coda_dqbuf,
1491 	.vidioc_create_bufs	= v4l2_m2m_ioctl_create_bufs,
1492 	.vidioc_prepare_buf	= v4l2_m2m_ioctl_prepare_buf,
1493 
1494 	.vidioc_streamon	= v4l2_m2m_ioctl_streamon,
1495 	.vidioc_streamoff	= v4l2_m2m_ioctl_streamoff,
1496 
1497 	.vidioc_g_selection	= coda_g_selection,
1498 	.vidioc_s_selection	= coda_s_selection,
1499 
1500 	.vidioc_try_encoder_cmd	= v4l2_m2m_ioctl_try_encoder_cmd,
1501 	.vidioc_encoder_cmd	= coda_encoder_cmd,
1502 	.vidioc_try_decoder_cmd	= v4l2_m2m_ioctl_try_decoder_cmd,
1503 	.vidioc_decoder_cmd	= coda_decoder_cmd,
1504 
1505 	.vidioc_g_parm		= coda_g_parm,
1506 	.vidioc_s_parm		= coda_s_parm,
1507 
1508 	.vidioc_enum_framesizes	= coda_enum_framesizes,
1509 	.vidioc_enum_frameintervals = coda_enum_frameintervals,
1510 
1511 	.vidioc_subscribe_event = coda_subscribe_event,
1512 	.vidioc_unsubscribe_event = v4l2_event_unsubscribe,
1513 };
1514 
1515 /*
1516  * Mem-to-mem operations.
1517  */
1518 
1519 static void coda_device_run(void *m2m_priv)
1520 {
1521 	struct coda_ctx *ctx = m2m_priv;
1522 	struct coda_dev *dev = ctx->dev;
1523 
1524 	queue_work(dev->workqueue, &ctx->pic_run_work);
1525 }
1526 
1527 static void coda_pic_run_work(struct work_struct *work)
1528 {
1529 	struct coda_ctx *ctx = container_of(work, struct coda_ctx, pic_run_work);
1530 	struct coda_dev *dev = ctx->dev;
1531 	int ret;
1532 
1533 	mutex_lock(&ctx->buffer_mutex);
1534 	mutex_lock(&dev->coda_mutex);
1535 
1536 	ret = ctx->ops->prepare_run(ctx);
1537 	if (ret < 0 && ctx->inst_type == CODA_INST_DECODER)
1538 		goto out;
1539 
1540 	if (!wait_for_completion_timeout(&ctx->completion,
1541 					 msecs_to_jiffies(1000))) {
1542 		if (ctx->use_bit) {
1543 			dev_err(dev->dev, "CODA PIC_RUN timeout\n");
1544 
1545 			ctx->hold = true;
1546 
1547 			coda_hw_reset(ctx);
1548 		}
1549 
1550 		if (ctx->ops->run_timeout)
1551 			ctx->ops->run_timeout(ctx);
1552 	} else {
1553 		ctx->ops->finish_run(ctx);
1554 	}
1555 
1556 	if ((ctx->aborting || (!ctx->streamon_cap && !ctx->streamon_out)) &&
1557 	    ctx->ops->seq_end_work)
1558 		queue_work(dev->workqueue, &ctx->seq_end_work);
1559 
1560 out:
1561 	mutex_unlock(&dev->coda_mutex);
1562 	mutex_unlock(&ctx->buffer_mutex);
1563 
1564 	v4l2_m2m_job_finish(ctx->dev->m2m_dev, ctx->fh.m2m_ctx);
1565 }
1566 
1567 static int coda_job_ready(void *m2m_priv)
1568 {
1569 	struct coda_ctx *ctx = m2m_priv;
1570 	int src_bufs = v4l2_m2m_num_src_bufs_ready(ctx->fh.m2m_ctx);
1571 
1572 	/*
1573 	 * For both 'P' and 'key' frame cases 1 picture
1574 	 * and 1 frame are needed. In the decoder case,
1575 	 * the compressed frame can be in the bitstream.
1576 	 */
1577 	if (!src_bufs && ctx->inst_type != CODA_INST_DECODER) {
1578 		coda_dbg(1, ctx, "not ready: not enough vid-out buffers.\n");
1579 		return 0;
1580 	}
1581 
1582 	if (!v4l2_m2m_num_dst_bufs_ready(ctx->fh.m2m_ctx)) {
1583 		coda_dbg(1, ctx, "not ready: not enough vid-cap buffers.\n");
1584 		return 0;
1585 	}
1586 
1587 	if (ctx->inst_type == CODA_INST_DECODER && ctx->use_bit) {
1588 		bool stream_end = ctx->bit_stream_param &
1589 				  CODA_BIT_STREAM_END_FLAG;
1590 		int num_metas = ctx->num_metas;
1591 		struct coda_buffer_meta *meta;
1592 		unsigned int count;
1593 
1594 		count = hweight32(ctx->frm_dis_flg);
1595 		if (ctx->use_vdoa && count >= (ctx->num_internal_frames - 1)) {
1596 			coda_dbg(1, ctx,
1597 				 "not ready: all internal buffers in use: %d/%d (0x%x)",
1598 				 count, ctx->num_internal_frames,
1599 				 ctx->frm_dis_flg);
1600 			return 0;
1601 		}
1602 
1603 		if (ctx->hold && !src_bufs) {
1604 			coda_dbg(1, ctx,
1605 				 "not ready: on hold for more buffers.\n");
1606 			return 0;
1607 		}
1608 
1609 		if (!stream_end && (num_metas + src_bufs) < 2) {
1610 			coda_dbg(1, ctx,
1611 				 "not ready: need 2 buffers available (queue:%d + bitstream:%d)\n",
1612 				 num_metas, src_bufs);
1613 			return 0;
1614 		}
1615 
1616 		meta = list_first_entry(&ctx->buffer_meta_list,
1617 					struct coda_buffer_meta, list);
1618 		if (!coda_bitstream_can_fetch_past(ctx, meta->end) &&
1619 		    !stream_end) {
1620 			coda_dbg(1, ctx,
1621 				 "not ready: not enough bitstream data to read past %u (%u)\n",
1622 				 meta->end, ctx->bitstream_fifo.kfifo.in);
1623 			return 0;
1624 		}
1625 	}
1626 
1627 	if (ctx->aborting) {
1628 		coda_dbg(1, ctx, "not ready: aborting\n");
1629 		return 0;
1630 	}
1631 
1632 	coda_dbg(2, ctx, "job ready\n");
1633 
1634 	return 1;
1635 }
1636 
1637 static void coda_job_abort(void *priv)
1638 {
1639 	struct coda_ctx *ctx = priv;
1640 
1641 	ctx->aborting = 1;
1642 
1643 	coda_dbg(1, ctx, "job abort\n");
1644 }
1645 
1646 static const struct v4l2_m2m_ops coda_m2m_ops = {
1647 	.device_run	= coda_device_run,
1648 	.job_ready	= coda_job_ready,
1649 	.job_abort	= coda_job_abort,
1650 };
1651 
1652 static void set_default_params(struct coda_ctx *ctx)
1653 {
1654 	unsigned int max_w, max_h, usize, csize;
1655 
1656 	ctx->codec = coda_find_codec(ctx->dev, ctx->cvd->src_formats[0],
1657 				     ctx->cvd->dst_formats[0]);
1658 	max_w = min(ctx->codec->max_w, 1920U);
1659 	max_h = min(ctx->codec->max_h, 1088U);
1660 	usize = max_w * max_h * 3 / 2;
1661 	csize = coda_estimate_sizeimage(ctx, usize, max_w, max_h);
1662 
1663 	ctx->params.codec_mode = ctx->codec->mode;
1664 	if (ctx->cvd->src_formats[0] == V4L2_PIX_FMT_JPEG ||
1665 	    ctx->cvd->dst_formats[0] == V4L2_PIX_FMT_JPEG) {
1666 		ctx->colorspace = V4L2_COLORSPACE_SRGB;
1667 		ctx->xfer_func = V4L2_XFER_FUNC_SRGB;
1668 		ctx->ycbcr_enc = V4L2_YCBCR_ENC_601;
1669 		ctx->quantization = V4L2_QUANTIZATION_FULL_RANGE;
1670 	} else {
1671 		ctx->colorspace = V4L2_COLORSPACE_REC709;
1672 		ctx->xfer_func = V4L2_XFER_FUNC_DEFAULT;
1673 		ctx->ycbcr_enc = V4L2_YCBCR_ENC_DEFAULT;
1674 		ctx->quantization = V4L2_QUANTIZATION_DEFAULT;
1675 	}
1676 	ctx->params.framerate = 30;
1677 
1678 	/* Default formats for output and input queues */
1679 	ctx->q_data[V4L2_M2M_SRC].fourcc = ctx->cvd->src_formats[0];
1680 	ctx->q_data[V4L2_M2M_DST].fourcc = ctx->cvd->dst_formats[0];
1681 	ctx->q_data[V4L2_M2M_SRC].width = max_w;
1682 	ctx->q_data[V4L2_M2M_SRC].height = max_h;
1683 	ctx->q_data[V4L2_M2M_DST].width = max_w;
1684 	ctx->q_data[V4L2_M2M_DST].height = max_h;
1685 	if (ctx->codec->src_fourcc == V4L2_PIX_FMT_YUV420) {
1686 		ctx->q_data[V4L2_M2M_SRC].bytesperline = max_w;
1687 		ctx->q_data[V4L2_M2M_SRC].sizeimage = usize;
1688 		ctx->q_data[V4L2_M2M_DST].bytesperline = 0;
1689 		ctx->q_data[V4L2_M2M_DST].sizeimage = csize;
1690 	} else {
1691 		ctx->q_data[V4L2_M2M_SRC].bytesperline = 0;
1692 		ctx->q_data[V4L2_M2M_SRC].sizeimage = csize;
1693 		ctx->q_data[V4L2_M2M_DST].bytesperline = max_w;
1694 		ctx->q_data[V4L2_M2M_DST].sizeimage = usize;
1695 	}
1696 	ctx->q_data[V4L2_M2M_SRC].rect.width = max_w;
1697 	ctx->q_data[V4L2_M2M_SRC].rect.height = max_h;
1698 	ctx->q_data[V4L2_M2M_DST].rect.width = max_w;
1699 	ctx->q_data[V4L2_M2M_DST].rect.height = max_h;
1700 
1701 	/*
1702 	 * Since the RBC2AXI logic only supports a single chroma plane,
1703 	 * macroblock tiling only works for to NV12 pixel format.
1704 	 */
1705 	ctx->tiled_map_type = GDI_LINEAR_FRAME_MAP;
1706 }
1707 
1708 /*
1709  * Queue operations
1710  */
1711 static int coda_queue_setup(struct vb2_queue *vq,
1712 				unsigned int *nbuffers, unsigned int *nplanes,
1713 				unsigned int sizes[], struct device *alloc_devs[])
1714 {
1715 	struct coda_ctx *ctx = vb2_get_drv_priv(vq);
1716 	struct coda_q_data *q_data;
1717 	unsigned int size;
1718 
1719 	q_data = get_q_data(ctx, vq->type);
1720 	size = q_data->sizeimage;
1721 
1722 	if (*nplanes)
1723 		return sizes[0] < size ? -EINVAL : 0;
1724 
1725 	*nplanes = 1;
1726 	sizes[0] = size;
1727 
1728 	coda_dbg(1, ctx, "get %d buffer(s) of size %d each.\n", *nbuffers,
1729 		 size);
1730 
1731 	return 0;
1732 }
1733 
1734 static int coda_buf_prepare(struct vb2_buffer *vb)
1735 {
1736 	struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
1737 	struct coda_ctx *ctx = vb2_get_drv_priv(vb->vb2_queue);
1738 	struct coda_q_data *q_data;
1739 
1740 	q_data = get_q_data(ctx, vb->vb2_queue->type);
1741 	if (V4L2_TYPE_IS_OUTPUT(vb->vb2_queue->type)) {
1742 		if (vbuf->field == V4L2_FIELD_ANY)
1743 			vbuf->field = V4L2_FIELD_NONE;
1744 		if (vbuf->field != V4L2_FIELD_NONE) {
1745 			v4l2_warn(&ctx->dev->v4l2_dev,
1746 				  "%s field isn't supported\n", __func__);
1747 			return -EINVAL;
1748 		}
1749 	}
1750 
1751 	if (vb2_plane_size(vb, 0) < q_data->sizeimage) {
1752 		v4l2_warn(&ctx->dev->v4l2_dev,
1753 			  "%s data will not fit into plane (%lu < %lu)\n",
1754 			  __func__, vb2_plane_size(vb, 0),
1755 			  (long)q_data->sizeimage);
1756 		return -EINVAL;
1757 	}
1758 
1759 	return 0;
1760 }
1761 
1762 static void coda_update_menu_ctrl(struct v4l2_ctrl *ctrl, int value)
1763 {
1764 	if (!ctrl)
1765 		return;
1766 
1767 	v4l2_ctrl_lock(ctrl);
1768 
1769 	/*
1770 	 * Extend the control range if the parsed stream contains a known but
1771 	 * unsupported value or level.
1772 	 */
1773 	if (value > ctrl->maximum) {
1774 		__v4l2_ctrl_modify_range(ctrl, ctrl->minimum, value,
1775 			ctrl->menu_skip_mask & ~(1 << value),
1776 			ctrl->default_value);
1777 	} else if (value < ctrl->minimum) {
1778 		__v4l2_ctrl_modify_range(ctrl, value, ctrl->maximum,
1779 			ctrl->menu_skip_mask & ~(1 << value),
1780 			ctrl->default_value);
1781 	}
1782 
1783 	__v4l2_ctrl_s_ctrl(ctrl, value);
1784 
1785 	v4l2_ctrl_unlock(ctrl);
1786 }
1787 
1788 void coda_update_profile_level_ctrls(struct coda_ctx *ctx, u8 profile_idc,
1789 				     u8 level_idc)
1790 {
1791 	const char * const *profile_names;
1792 	const char * const *level_names;
1793 	struct v4l2_ctrl *profile_ctrl;
1794 	struct v4l2_ctrl *level_ctrl;
1795 	const char *codec_name;
1796 	u32 profile_cid;
1797 	u32 level_cid;
1798 	int profile;
1799 	int level;
1800 
1801 	switch (ctx->codec->src_fourcc) {
1802 	case V4L2_PIX_FMT_H264:
1803 		codec_name = "H264";
1804 		profile_cid = V4L2_CID_MPEG_VIDEO_H264_PROFILE;
1805 		level_cid = V4L2_CID_MPEG_VIDEO_H264_LEVEL;
1806 		profile_ctrl = ctx->h264_profile_ctrl;
1807 		level_ctrl = ctx->h264_level_ctrl;
1808 		profile = coda_h264_profile(profile_idc);
1809 		level = coda_h264_level(level_idc);
1810 		break;
1811 	case V4L2_PIX_FMT_MPEG2:
1812 		codec_name = "MPEG-2";
1813 		profile_cid = V4L2_CID_MPEG_VIDEO_MPEG2_PROFILE;
1814 		level_cid = V4L2_CID_MPEG_VIDEO_MPEG2_LEVEL;
1815 		profile_ctrl = ctx->mpeg2_profile_ctrl;
1816 		level_ctrl = ctx->mpeg2_level_ctrl;
1817 		profile = coda_mpeg2_profile(profile_idc);
1818 		level = coda_mpeg2_level(level_idc);
1819 		break;
1820 	case V4L2_PIX_FMT_MPEG4:
1821 		codec_name = "MPEG-4";
1822 		profile_cid = V4L2_CID_MPEG_VIDEO_MPEG4_PROFILE;
1823 		level_cid = V4L2_CID_MPEG_VIDEO_MPEG4_LEVEL;
1824 		profile_ctrl = ctx->mpeg4_profile_ctrl;
1825 		level_ctrl = ctx->mpeg4_level_ctrl;
1826 		profile = coda_mpeg4_profile(profile_idc);
1827 		level = coda_mpeg4_level(level_idc);
1828 		break;
1829 	default:
1830 		return;
1831 	}
1832 
1833 	profile_names = v4l2_ctrl_get_menu(profile_cid);
1834 	level_names = v4l2_ctrl_get_menu(level_cid);
1835 
1836 	if (profile < 0) {
1837 		v4l2_warn(&ctx->dev->v4l2_dev, "Invalid %s profile: %u\n",
1838 			  codec_name, profile_idc);
1839 	} else {
1840 		coda_dbg(1, ctx, "Parsed %s profile: %s\n", codec_name,
1841 			 profile_names[profile]);
1842 		coda_update_menu_ctrl(profile_ctrl, profile);
1843 	}
1844 
1845 	if (level < 0) {
1846 		v4l2_warn(&ctx->dev->v4l2_dev, "Invalid %s level: %u\n",
1847 			  codec_name, level_idc);
1848 	} else {
1849 		coda_dbg(1, ctx, "Parsed %s level: %s\n", codec_name,
1850 			 level_names[level]);
1851 		coda_update_menu_ctrl(level_ctrl, level);
1852 	}
1853 }
1854 
1855 static void coda_queue_source_change_event(struct coda_ctx *ctx)
1856 {
1857 	static const struct v4l2_event source_change_event = {
1858 		.type = V4L2_EVENT_SOURCE_CHANGE,
1859 		.u.src_change.changes = V4L2_EVENT_SRC_CH_RESOLUTION,
1860 	};
1861 
1862 	v4l2_event_queue_fh(&ctx->fh, &source_change_event);
1863 }
1864 
1865 static void coda_buf_queue(struct vb2_buffer *vb)
1866 {
1867 	struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
1868 	struct coda_ctx *ctx = vb2_get_drv_priv(vb->vb2_queue);
1869 	struct vb2_queue *vq = vb->vb2_queue;
1870 	struct coda_q_data *q_data;
1871 
1872 	q_data = get_q_data(ctx, vb->vb2_queue->type);
1873 
1874 	/*
1875 	 * In the decoder case, immediately try to copy the buffer into the
1876 	 * bitstream ringbuffer and mark it as ready to be dequeued.
1877 	 */
1878 	if (ctx->bitstream.size && vq->type == V4L2_BUF_TYPE_VIDEO_OUTPUT) {
1879 		/*
1880 		 * For backwards compatibility, queuing an empty buffer marks
1881 		 * the stream end
1882 		 */
1883 		if (vb2_get_plane_payload(vb, 0) == 0)
1884 			coda_bit_stream_end_flag(ctx);
1885 
1886 		if (q_data->fourcc == V4L2_PIX_FMT_H264) {
1887 			/*
1888 			 * Unless already done, try to obtain profile_idc and
1889 			 * level_idc from the SPS header. This allows to decide
1890 			 * whether to enable reordering during sequence
1891 			 * initialization.
1892 			 */
1893 			if (!ctx->params.h264_profile_idc) {
1894 				coda_sps_parse_profile(ctx, vb);
1895 				coda_update_profile_level_ctrls(ctx,
1896 						ctx->params.h264_profile_idc,
1897 						ctx->params.h264_level_idc);
1898 			}
1899 		}
1900 
1901 		mutex_lock(&ctx->bitstream_mutex);
1902 		v4l2_m2m_buf_queue(ctx->fh.m2m_ctx, vbuf);
1903 		if (vb2_is_streaming(vb->vb2_queue))
1904 			/* This set buf->sequence = ctx->qsequence++ */
1905 			coda_fill_bitstream(ctx, NULL);
1906 		mutex_unlock(&ctx->bitstream_mutex);
1907 
1908 		if (!ctx->initialized) {
1909 			/*
1910 			 * Run sequence initialization in case the queued
1911 			 * buffer contained headers.
1912 			 */
1913 			if (vb2_is_streaming(vb->vb2_queue) &&
1914 			    ctx->ops->seq_init_work) {
1915 				queue_work(ctx->dev->workqueue,
1916 					   &ctx->seq_init_work);
1917 				flush_work(&ctx->seq_init_work);
1918 			}
1919 
1920 			if (ctx->initialized)
1921 				coda_queue_source_change_event(ctx);
1922 		}
1923 	} else {
1924 		if ((ctx->inst_type == CODA_INST_ENCODER || !ctx->use_bit) &&
1925 		    vq->type == V4L2_BUF_TYPE_VIDEO_OUTPUT)
1926 			vbuf->sequence = ctx->qsequence++;
1927 		v4l2_m2m_buf_queue(ctx->fh.m2m_ctx, vbuf);
1928 	}
1929 }
1930 
1931 int coda_alloc_aux_buf(struct coda_dev *dev, struct coda_aux_buf *buf,
1932 		       size_t size, const char *name, struct dentry *parent)
1933 {
1934 	buf->vaddr = dma_alloc_coherent(dev->dev, size, &buf->paddr,
1935 					GFP_KERNEL);
1936 	if (!buf->vaddr) {
1937 		v4l2_err(&dev->v4l2_dev,
1938 			 "Failed to allocate %s buffer of size %zu\n",
1939 			 name, size);
1940 		return -ENOMEM;
1941 	}
1942 
1943 	buf->size = size;
1944 
1945 	if (name && parent) {
1946 		buf->blob.data = buf->vaddr;
1947 		buf->blob.size = size;
1948 		buf->dentry = debugfs_create_blob(name, 0444, parent,
1949 						  &buf->blob);
1950 	}
1951 
1952 	return 0;
1953 }
1954 
1955 void coda_free_aux_buf(struct coda_dev *dev,
1956 		       struct coda_aux_buf *buf)
1957 {
1958 	if (buf->vaddr) {
1959 		dma_free_coherent(dev->dev, buf->size, buf->vaddr, buf->paddr);
1960 		buf->vaddr = NULL;
1961 		buf->size = 0;
1962 		debugfs_remove(buf->dentry);
1963 		buf->dentry = NULL;
1964 	}
1965 }
1966 
1967 static int coda_start_streaming(struct vb2_queue *q, unsigned int count)
1968 {
1969 	struct coda_ctx *ctx = vb2_get_drv_priv(q);
1970 	struct v4l2_device *v4l2_dev = &ctx->dev->v4l2_dev;
1971 	struct coda_q_data *q_data_src, *q_data_dst;
1972 	struct v4l2_m2m_buffer *m2m_buf, *tmp;
1973 	struct vb2_v4l2_buffer *buf;
1974 	struct list_head list;
1975 	int ret = 0;
1976 
1977 	if (count < 1)
1978 		return -EINVAL;
1979 
1980 	coda_dbg(1, ctx, "start streaming %s\n", v4l2_type_names[q->type]);
1981 
1982 	INIT_LIST_HEAD(&list);
1983 
1984 	q_data_src = get_q_data(ctx, V4L2_BUF_TYPE_VIDEO_OUTPUT);
1985 	if (q->type == V4L2_BUF_TYPE_VIDEO_OUTPUT) {
1986 		if (ctx->inst_type == CODA_INST_DECODER && ctx->use_bit) {
1987 			/* copy the buffers that were queued before streamon */
1988 			mutex_lock(&ctx->bitstream_mutex);
1989 			coda_fill_bitstream(ctx, &list);
1990 			mutex_unlock(&ctx->bitstream_mutex);
1991 
1992 			if (ctx->dev->devtype->product != CODA_960 &&
1993 			    coda_get_bitstream_payload(ctx) < 512) {
1994 				v4l2_err(v4l2_dev, "start payload < 512\n");
1995 				ret = -EINVAL;
1996 				goto err;
1997 			}
1998 
1999 			if (!ctx->initialized) {
2000 				/* Run sequence initialization */
2001 				if (ctx->ops->seq_init_work) {
2002 					queue_work(ctx->dev->workqueue,
2003 						   &ctx->seq_init_work);
2004 					flush_work(&ctx->seq_init_work);
2005 				}
2006 			}
2007 		}
2008 
2009 		/*
2010 		 * Check the first input JPEG buffer to determine chroma
2011 		 * subsampling.
2012 		 */
2013 		if (q_data_src->fourcc == V4L2_PIX_FMT_JPEG) {
2014 			buf = v4l2_m2m_next_src_buf(ctx->fh.m2m_ctx);
2015 			coda_jpeg_decode_header(ctx, &buf->vb2_buf);
2016 			/*
2017 			 * We have to start streaming even if the first buffer
2018 			 * does not contain a valid JPEG image. The error will
2019 			 * be caught during device run and will be signalled
2020 			 * via the capture buffer error flag.
2021 			 */
2022 
2023 			q_data_dst = get_q_data(ctx, V4L2_BUF_TYPE_VIDEO_CAPTURE);
2024 			q_data_dst->width = round_up(q_data_src->width, 16);
2025 			q_data_dst->height = round_up(q_data_src->height, 16);
2026 			q_data_dst->bytesperline = q_data_dst->width;
2027 			if (ctx->params.jpeg_chroma_subsampling ==
2028 			    V4L2_JPEG_CHROMA_SUBSAMPLING_420) {
2029 				q_data_dst->sizeimage =
2030 						q_data_dst->bytesperline *
2031 						q_data_dst->height * 3 / 2;
2032 				if (q_data_dst->fourcc != V4L2_PIX_FMT_YUV420)
2033 					q_data_dst->fourcc = V4L2_PIX_FMT_NV12;
2034 			} else {
2035 				q_data_dst->sizeimage =
2036 						q_data_dst->bytesperline *
2037 						q_data_dst->height * 2;
2038 				q_data_dst->fourcc = V4L2_PIX_FMT_YUV422P;
2039 			}
2040 			q_data_dst->rect.left = 0;
2041 			q_data_dst->rect.top = 0;
2042 			q_data_dst->rect.width = q_data_src->width;
2043 			q_data_dst->rect.height = q_data_src->height;
2044 		}
2045 		ctx->streamon_out = 1;
2046 	} else {
2047 		ctx->streamon_cap = 1;
2048 	}
2049 
2050 	/* Don't start the coda unless both queues are on */
2051 	if (!(ctx->streamon_out && ctx->streamon_cap))
2052 		goto out;
2053 
2054 	q_data_dst = get_q_data(ctx, V4L2_BUF_TYPE_VIDEO_CAPTURE);
2055 	if ((q_data_src->rect.width != q_data_dst->width &&
2056 	     round_up(q_data_src->rect.width, 16) != q_data_dst->width) ||
2057 	    (q_data_src->rect.height != q_data_dst->height &&
2058 	     round_up(q_data_src->rect.height, 16) != q_data_dst->height)) {
2059 		v4l2_err(v4l2_dev, "can't convert %dx%d to %dx%d\n",
2060 			 q_data_src->rect.width, q_data_src->rect.height,
2061 			 q_data_dst->width, q_data_dst->height);
2062 		ret = -EINVAL;
2063 		goto err;
2064 	}
2065 
2066 	/* Allow BIT decoder device_run with no new buffers queued */
2067 	if (ctx->inst_type == CODA_INST_DECODER && ctx->use_bit)
2068 		v4l2_m2m_set_src_buffered(ctx->fh.m2m_ctx, true);
2069 
2070 	ctx->gopcounter = ctx->params.gop_size - 1;
2071 
2072 	if (q_data_dst->fourcc == V4L2_PIX_FMT_JPEG)
2073 		ctx->params.gop_size = 1;
2074 	ctx->gopcounter = ctx->params.gop_size - 1;
2075 	/* Only decoders have this control */
2076 	if (ctx->mb_err_cnt_ctrl)
2077 		v4l2_ctrl_s_ctrl(ctx->mb_err_cnt_ctrl, 0);
2078 
2079 	ret = ctx->ops->start_streaming(ctx);
2080 	if (ctx->inst_type == CODA_INST_DECODER) {
2081 		if (ret == -EAGAIN)
2082 			goto out;
2083 	}
2084 	if (ret < 0)
2085 		goto err;
2086 
2087 out:
2088 	if (q->type == V4L2_BUF_TYPE_VIDEO_OUTPUT) {
2089 		list_for_each_entry_safe(m2m_buf, tmp, &list, list) {
2090 			list_del(&m2m_buf->list);
2091 			v4l2_m2m_buf_done(&m2m_buf->vb, VB2_BUF_STATE_DONE);
2092 		}
2093 	}
2094 	return 0;
2095 
2096 err:
2097 	if (q->type == V4L2_BUF_TYPE_VIDEO_OUTPUT) {
2098 		list_for_each_entry_safe(m2m_buf, tmp, &list, list) {
2099 			list_del(&m2m_buf->list);
2100 			v4l2_m2m_buf_done(&m2m_buf->vb, VB2_BUF_STATE_QUEUED);
2101 		}
2102 		while ((buf = v4l2_m2m_src_buf_remove(ctx->fh.m2m_ctx)))
2103 			v4l2_m2m_buf_done(buf, VB2_BUF_STATE_QUEUED);
2104 	} else {
2105 		while ((buf = v4l2_m2m_dst_buf_remove(ctx->fh.m2m_ctx)))
2106 			v4l2_m2m_buf_done(buf, VB2_BUF_STATE_QUEUED);
2107 	}
2108 	return ret;
2109 }
2110 
2111 static void coda_stop_streaming(struct vb2_queue *q)
2112 {
2113 	struct coda_ctx *ctx = vb2_get_drv_priv(q);
2114 	struct coda_dev *dev = ctx->dev;
2115 	struct vb2_v4l2_buffer *buf;
2116 	bool stop;
2117 
2118 	stop = ctx->streamon_out && ctx->streamon_cap;
2119 
2120 	coda_dbg(1, ctx, "stop streaming %s\n", v4l2_type_names[q->type]);
2121 
2122 	if (q->type == V4L2_BUF_TYPE_VIDEO_OUTPUT) {
2123 		ctx->streamon_out = 0;
2124 
2125 		coda_bit_stream_end_flag(ctx);
2126 
2127 		ctx->qsequence = 0;
2128 
2129 		while ((buf = v4l2_m2m_src_buf_remove(ctx->fh.m2m_ctx)))
2130 			v4l2_m2m_buf_done(buf, VB2_BUF_STATE_ERROR);
2131 	} else {
2132 		ctx->streamon_cap = 0;
2133 
2134 		ctx->osequence = 0;
2135 		ctx->sequence_offset = 0;
2136 
2137 		while ((buf = v4l2_m2m_dst_buf_remove(ctx->fh.m2m_ctx)))
2138 			v4l2_m2m_buf_done(buf, VB2_BUF_STATE_ERROR);
2139 	}
2140 
2141 	if (stop) {
2142 		struct coda_buffer_meta *meta;
2143 
2144 		if (ctx->ops->seq_end_work) {
2145 			queue_work(dev->workqueue, &ctx->seq_end_work);
2146 			flush_work(&ctx->seq_end_work);
2147 		}
2148 		spin_lock(&ctx->buffer_meta_lock);
2149 		while (!list_empty(&ctx->buffer_meta_list)) {
2150 			meta = list_first_entry(&ctx->buffer_meta_list,
2151 						struct coda_buffer_meta, list);
2152 			list_del(&meta->list);
2153 			kfree(meta);
2154 		}
2155 		ctx->num_metas = 0;
2156 		spin_unlock(&ctx->buffer_meta_lock);
2157 		kfifo_init(&ctx->bitstream_fifo,
2158 			ctx->bitstream.vaddr, ctx->bitstream.size);
2159 		ctx->runcounter = 0;
2160 		ctx->aborting = 0;
2161 		ctx->hold = false;
2162 	}
2163 
2164 	if (!ctx->streamon_out && !ctx->streamon_cap)
2165 		ctx->bit_stream_param &= ~CODA_BIT_STREAM_END_FLAG;
2166 }
2167 
2168 static const struct vb2_ops coda_qops = {
2169 	.queue_setup		= coda_queue_setup,
2170 	.buf_prepare		= coda_buf_prepare,
2171 	.buf_queue		= coda_buf_queue,
2172 	.start_streaming	= coda_start_streaming,
2173 	.stop_streaming		= coda_stop_streaming,
2174 	.wait_prepare		= vb2_ops_wait_prepare,
2175 	.wait_finish		= vb2_ops_wait_finish,
2176 };
2177 
2178 static int coda_s_ctrl(struct v4l2_ctrl *ctrl)
2179 {
2180 	const char * const *val_names = v4l2_ctrl_get_menu(ctrl->id);
2181 	struct coda_ctx *ctx =
2182 			container_of(ctrl->handler, struct coda_ctx, ctrls);
2183 
2184 	if (val_names)
2185 		coda_dbg(2, ctx, "s_ctrl: id = 0x%x, name = \"%s\", val = %d (\"%s\")\n",
2186 			 ctrl->id, ctrl->name, ctrl->val, val_names[ctrl->val]);
2187 	else
2188 		coda_dbg(2, ctx, "s_ctrl: id = 0x%x, name = \"%s\", val = %d\n",
2189 			 ctrl->id, ctrl->name, ctrl->val);
2190 
2191 	switch (ctrl->id) {
2192 	case V4L2_CID_HFLIP:
2193 		if (ctrl->val)
2194 			ctx->params.rot_mode |= CODA_MIR_HOR;
2195 		else
2196 			ctx->params.rot_mode &= ~CODA_MIR_HOR;
2197 		break;
2198 	case V4L2_CID_VFLIP:
2199 		if (ctrl->val)
2200 			ctx->params.rot_mode |= CODA_MIR_VER;
2201 		else
2202 			ctx->params.rot_mode &= ~CODA_MIR_VER;
2203 		break;
2204 	case V4L2_CID_MPEG_VIDEO_BITRATE:
2205 		ctx->params.bitrate = ctrl->val / 1000;
2206 		ctx->params.bitrate_changed = true;
2207 		break;
2208 	case V4L2_CID_MPEG_VIDEO_GOP_SIZE:
2209 		ctx->params.gop_size = ctrl->val;
2210 		break;
2211 	case V4L2_CID_MPEG_VIDEO_H264_I_FRAME_QP:
2212 		ctx->params.h264_intra_qp = ctrl->val;
2213 		ctx->params.h264_intra_qp_changed = true;
2214 		break;
2215 	case V4L2_CID_MPEG_VIDEO_H264_P_FRAME_QP:
2216 		ctx->params.h264_inter_qp = ctrl->val;
2217 		break;
2218 	case V4L2_CID_MPEG_VIDEO_H264_MIN_QP:
2219 		ctx->params.h264_min_qp = ctrl->val;
2220 		break;
2221 	case V4L2_CID_MPEG_VIDEO_H264_MAX_QP:
2222 		ctx->params.h264_max_qp = ctrl->val;
2223 		break;
2224 	case V4L2_CID_MPEG_VIDEO_H264_LOOP_FILTER_ALPHA:
2225 		ctx->params.h264_slice_alpha_c0_offset_div2 = ctrl->val;
2226 		break;
2227 	case V4L2_CID_MPEG_VIDEO_H264_LOOP_FILTER_BETA:
2228 		ctx->params.h264_slice_beta_offset_div2 = ctrl->val;
2229 		break;
2230 	case V4L2_CID_MPEG_VIDEO_H264_LOOP_FILTER_MODE:
2231 		ctx->params.h264_disable_deblocking_filter_idc = ctrl->val;
2232 		break;
2233 	case V4L2_CID_MPEG_VIDEO_H264_CONSTRAINED_INTRA_PREDICTION:
2234 		ctx->params.h264_constrained_intra_pred_flag = ctrl->val;
2235 		break;
2236 	case V4L2_CID_MPEG_VIDEO_FRAME_RC_ENABLE:
2237 		ctx->params.frame_rc_enable = ctrl->val;
2238 		break;
2239 	case V4L2_CID_MPEG_VIDEO_MB_RC_ENABLE:
2240 		ctx->params.mb_rc_enable = ctrl->val;
2241 		break;
2242 	case V4L2_CID_MPEG_VIDEO_H264_CHROMA_QP_INDEX_OFFSET:
2243 		ctx->params.h264_chroma_qp_index_offset = ctrl->val;
2244 		break;
2245 	case V4L2_CID_MPEG_VIDEO_H264_PROFILE:
2246 		/* TODO: switch between baseline and constrained baseline */
2247 		if (ctx->inst_type == CODA_INST_ENCODER)
2248 			ctx->params.h264_profile_idc = 66;
2249 		break;
2250 	case V4L2_CID_MPEG_VIDEO_H264_LEVEL:
2251 		/* nothing to do, this is set by the encoder */
2252 		break;
2253 	case V4L2_CID_MPEG_VIDEO_MPEG4_I_FRAME_QP:
2254 		ctx->params.mpeg4_intra_qp = ctrl->val;
2255 		break;
2256 	case V4L2_CID_MPEG_VIDEO_MPEG4_P_FRAME_QP:
2257 		ctx->params.mpeg4_inter_qp = ctrl->val;
2258 		break;
2259 	case V4L2_CID_MPEG_VIDEO_MPEG2_PROFILE:
2260 	case V4L2_CID_MPEG_VIDEO_MPEG2_LEVEL:
2261 	case V4L2_CID_MPEG_VIDEO_MPEG4_PROFILE:
2262 	case V4L2_CID_MPEG_VIDEO_MPEG4_LEVEL:
2263 		/* nothing to do, these are fixed */
2264 		break;
2265 	case V4L2_CID_MPEG_VIDEO_MULTI_SLICE_MODE:
2266 		ctx->params.slice_mode = ctrl->val;
2267 		ctx->params.slice_mode_changed = true;
2268 		break;
2269 	case V4L2_CID_MPEG_VIDEO_MULTI_SLICE_MAX_MB:
2270 		ctx->params.slice_max_mb = ctrl->val;
2271 		ctx->params.slice_mode_changed = true;
2272 		break;
2273 	case V4L2_CID_MPEG_VIDEO_MULTI_SLICE_MAX_BYTES:
2274 		ctx->params.slice_max_bits = ctrl->val * 8;
2275 		ctx->params.slice_mode_changed = true;
2276 		break;
2277 	case V4L2_CID_MPEG_VIDEO_HEADER_MODE:
2278 		break;
2279 	case V4L2_CID_MPEG_VIDEO_CYCLIC_INTRA_REFRESH_MB:
2280 		ctx->params.intra_refresh = ctrl->val;
2281 		ctx->params.intra_refresh_changed = true;
2282 		break;
2283 	case V4L2_CID_MPEG_VIDEO_FORCE_KEY_FRAME:
2284 		ctx->params.force_ipicture = true;
2285 		break;
2286 	case V4L2_CID_JPEG_COMPRESSION_QUALITY:
2287 		coda_set_jpeg_compression_quality(ctx, ctrl->val);
2288 		break;
2289 	case V4L2_CID_JPEG_RESTART_INTERVAL:
2290 		ctx->params.jpeg_restart_interval = ctrl->val;
2291 		break;
2292 	case V4L2_CID_MPEG_VIDEO_VBV_DELAY:
2293 		ctx->params.vbv_delay = ctrl->val;
2294 		break;
2295 	case V4L2_CID_MPEG_VIDEO_VBV_SIZE:
2296 		ctx->params.vbv_size = min(ctrl->val * 8192, 0x7fffffff);
2297 		break;
2298 	default:
2299 		coda_dbg(1, ctx, "Invalid control, id=%d, val=%d\n",
2300 			 ctrl->id, ctrl->val);
2301 		return -EINVAL;
2302 	}
2303 
2304 	return 0;
2305 }
2306 
2307 static const struct v4l2_ctrl_ops coda_ctrl_ops = {
2308 	.s_ctrl = coda_s_ctrl,
2309 };
2310 
2311 static void coda_encode_ctrls(struct coda_ctx *ctx)
2312 {
2313 	int max_gop_size = (ctx->dev->devtype->product == CODA_DX6) ? 60 : 99;
2314 
2315 	v4l2_ctrl_new_std(&ctx->ctrls, &coda_ctrl_ops,
2316 		V4L2_CID_MPEG_VIDEO_BITRATE, 0, 32767000, 1000, 0);
2317 	v4l2_ctrl_new_std(&ctx->ctrls, &coda_ctrl_ops,
2318 		V4L2_CID_MPEG_VIDEO_GOP_SIZE, 0, max_gop_size, 1, 16);
2319 	v4l2_ctrl_new_std(&ctx->ctrls, &coda_ctrl_ops,
2320 		V4L2_CID_MPEG_VIDEO_H264_I_FRAME_QP, 0, 51, 1, 25);
2321 	v4l2_ctrl_new_std(&ctx->ctrls, &coda_ctrl_ops,
2322 		V4L2_CID_MPEG_VIDEO_H264_P_FRAME_QP, 0, 51, 1, 25);
2323 	if (ctx->dev->devtype->product != CODA_960) {
2324 		v4l2_ctrl_new_std(&ctx->ctrls, &coda_ctrl_ops,
2325 			V4L2_CID_MPEG_VIDEO_H264_MIN_QP, 0, 51, 1, 12);
2326 	}
2327 	v4l2_ctrl_new_std(&ctx->ctrls, &coda_ctrl_ops,
2328 		V4L2_CID_MPEG_VIDEO_H264_MAX_QP, 0, 51, 1, 51);
2329 	v4l2_ctrl_new_std(&ctx->ctrls, &coda_ctrl_ops,
2330 		V4L2_CID_MPEG_VIDEO_H264_LOOP_FILTER_ALPHA, -6, 6, 1, 0);
2331 	v4l2_ctrl_new_std(&ctx->ctrls, &coda_ctrl_ops,
2332 		V4L2_CID_MPEG_VIDEO_H264_LOOP_FILTER_BETA, -6, 6, 1, 0);
2333 	v4l2_ctrl_new_std_menu(&ctx->ctrls, &coda_ctrl_ops,
2334 		V4L2_CID_MPEG_VIDEO_H264_LOOP_FILTER_MODE,
2335 		V4L2_MPEG_VIDEO_H264_LOOP_FILTER_MODE_DISABLED_AT_SLICE_BOUNDARY,
2336 		0x0, V4L2_MPEG_VIDEO_H264_LOOP_FILTER_MODE_ENABLED);
2337 	v4l2_ctrl_new_std(&ctx->ctrls, &coda_ctrl_ops,
2338 		V4L2_CID_MPEG_VIDEO_H264_CONSTRAINED_INTRA_PREDICTION, 0, 1, 1,
2339 		0);
2340 	v4l2_ctrl_new_std(&ctx->ctrls, &coda_ctrl_ops,
2341 		V4L2_CID_MPEG_VIDEO_FRAME_RC_ENABLE, 0, 1, 1, 1);
2342 	v4l2_ctrl_new_std(&ctx->ctrls, &coda_ctrl_ops,
2343 		V4L2_CID_MPEG_VIDEO_MB_RC_ENABLE, 0, 1, 1, 1);
2344 	v4l2_ctrl_new_std(&ctx->ctrls, &coda_ctrl_ops,
2345 		V4L2_CID_MPEG_VIDEO_H264_CHROMA_QP_INDEX_OFFSET, -12, 12, 1, 0);
2346 	v4l2_ctrl_new_std_menu(&ctx->ctrls, &coda_ctrl_ops,
2347 		V4L2_CID_MPEG_VIDEO_H264_PROFILE,
2348 		V4L2_MPEG_VIDEO_H264_PROFILE_CONSTRAINED_BASELINE, 0x0,
2349 		V4L2_MPEG_VIDEO_H264_PROFILE_CONSTRAINED_BASELINE);
2350 	if (ctx->dev->devtype->product == CODA_HX4 ||
2351 	    ctx->dev->devtype->product == CODA_7541) {
2352 		v4l2_ctrl_new_std_menu(&ctx->ctrls, &coda_ctrl_ops,
2353 			V4L2_CID_MPEG_VIDEO_H264_LEVEL,
2354 			V4L2_MPEG_VIDEO_H264_LEVEL_3_1,
2355 			~((1 << V4L2_MPEG_VIDEO_H264_LEVEL_2_0) |
2356 			  (1 << V4L2_MPEG_VIDEO_H264_LEVEL_3_0) |
2357 			  (1 << V4L2_MPEG_VIDEO_H264_LEVEL_3_1)),
2358 			V4L2_MPEG_VIDEO_H264_LEVEL_3_1);
2359 	}
2360 	if (ctx->dev->devtype->product == CODA_960) {
2361 		v4l2_ctrl_new_std_menu(&ctx->ctrls, &coda_ctrl_ops,
2362 			V4L2_CID_MPEG_VIDEO_H264_LEVEL,
2363 			V4L2_MPEG_VIDEO_H264_LEVEL_4_2,
2364 			~((1 << V4L2_MPEG_VIDEO_H264_LEVEL_1_0) |
2365 			  (1 << V4L2_MPEG_VIDEO_H264_LEVEL_2_0) |
2366 			  (1 << V4L2_MPEG_VIDEO_H264_LEVEL_3_0) |
2367 			  (1 << V4L2_MPEG_VIDEO_H264_LEVEL_3_1) |
2368 			  (1 << V4L2_MPEG_VIDEO_H264_LEVEL_3_2) |
2369 			  (1 << V4L2_MPEG_VIDEO_H264_LEVEL_4_0) |
2370 			  (1 << V4L2_MPEG_VIDEO_H264_LEVEL_4_1) |
2371 			  (1 << V4L2_MPEG_VIDEO_H264_LEVEL_4_2)),
2372 			V4L2_MPEG_VIDEO_H264_LEVEL_4_0);
2373 	}
2374 	v4l2_ctrl_new_std(&ctx->ctrls, &coda_ctrl_ops,
2375 		V4L2_CID_MPEG_VIDEO_MPEG4_I_FRAME_QP, 1, 31, 1, 2);
2376 	v4l2_ctrl_new_std(&ctx->ctrls, &coda_ctrl_ops,
2377 		V4L2_CID_MPEG_VIDEO_MPEG4_P_FRAME_QP, 1, 31, 1, 2);
2378 	v4l2_ctrl_new_std_menu(&ctx->ctrls, &coda_ctrl_ops,
2379 		V4L2_CID_MPEG_VIDEO_MPEG4_PROFILE,
2380 		V4L2_MPEG_VIDEO_MPEG4_PROFILE_SIMPLE, 0x0,
2381 		V4L2_MPEG_VIDEO_MPEG4_PROFILE_SIMPLE);
2382 	if (ctx->dev->devtype->product == CODA_HX4 ||
2383 	    ctx->dev->devtype->product == CODA_7541 ||
2384 	    ctx->dev->devtype->product == CODA_960) {
2385 		v4l2_ctrl_new_std_menu(&ctx->ctrls, &coda_ctrl_ops,
2386 			V4L2_CID_MPEG_VIDEO_MPEG4_LEVEL,
2387 			V4L2_MPEG_VIDEO_MPEG4_LEVEL_5,
2388 			~(1 << V4L2_MPEG_VIDEO_MPEG4_LEVEL_5),
2389 			V4L2_MPEG_VIDEO_MPEG4_LEVEL_5);
2390 	}
2391 	v4l2_ctrl_new_std_menu(&ctx->ctrls, &coda_ctrl_ops,
2392 		V4L2_CID_MPEG_VIDEO_MULTI_SLICE_MODE,
2393 		V4L2_MPEG_VIDEO_MULTI_SLICE_MODE_MAX_BYTES, 0x0,
2394 		V4L2_MPEG_VIDEO_MULTI_SLICE_MODE_SINGLE);
2395 	v4l2_ctrl_new_std(&ctx->ctrls, &coda_ctrl_ops,
2396 		V4L2_CID_MPEG_VIDEO_MULTI_SLICE_MAX_MB, 1, 0x3fffffff, 1, 1);
2397 	v4l2_ctrl_new_std(&ctx->ctrls, &coda_ctrl_ops,
2398 		V4L2_CID_MPEG_VIDEO_MULTI_SLICE_MAX_BYTES, 1, 0x3fffffff, 1,
2399 		500);
2400 	v4l2_ctrl_new_std_menu(&ctx->ctrls, &coda_ctrl_ops,
2401 		V4L2_CID_MPEG_VIDEO_HEADER_MODE,
2402 		V4L2_MPEG_VIDEO_HEADER_MODE_JOINED_WITH_1ST_FRAME,
2403 		(1 << V4L2_MPEG_VIDEO_HEADER_MODE_SEPARATE),
2404 		V4L2_MPEG_VIDEO_HEADER_MODE_JOINED_WITH_1ST_FRAME);
2405 	v4l2_ctrl_new_std(&ctx->ctrls, &coda_ctrl_ops,
2406 		V4L2_CID_MPEG_VIDEO_CYCLIC_INTRA_REFRESH_MB, 0,
2407 		1920 * 1088 / 256, 1, 0);
2408 	v4l2_ctrl_new_std(&ctx->ctrls, &coda_ctrl_ops,
2409 		V4L2_CID_MPEG_VIDEO_VBV_DELAY, 0, 0x7fff, 1, 0);
2410 	/*
2411 	 * The maximum VBV size value is 0x7fffffff bits,
2412 	 * one bit less than 262144 KiB
2413 	 */
2414 	v4l2_ctrl_new_std(&ctx->ctrls, &coda_ctrl_ops,
2415 		V4L2_CID_MPEG_VIDEO_VBV_SIZE, 0, 262144, 1, 0);
2416 }
2417 
2418 static void coda_jpeg_encode_ctrls(struct coda_ctx *ctx)
2419 {
2420 	v4l2_ctrl_new_std(&ctx->ctrls, &coda_ctrl_ops,
2421 		V4L2_CID_JPEG_COMPRESSION_QUALITY, 5, 100, 1, 50);
2422 	v4l2_ctrl_new_std(&ctx->ctrls, &coda_ctrl_ops,
2423 		V4L2_CID_JPEG_RESTART_INTERVAL, 0, 100, 1, 0);
2424 }
2425 
2426 static void coda_decode_ctrls(struct coda_ctx *ctx)
2427 {
2428 	u8 max;
2429 
2430 	ctx->h264_profile_ctrl = v4l2_ctrl_new_std_menu(&ctx->ctrls,
2431 		&coda_ctrl_ops, V4L2_CID_MPEG_VIDEO_H264_PROFILE,
2432 		V4L2_MPEG_VIDEO_H264_PROFILE_HIGH,
2433 		~((1 << V4L2_MPEG_VIDEO_H264_PROFILE_CONSTRAINED_BASELINE) |
2434 		  (1 << V4L2_MPEG_VIDEO_H264_PROFILE_MAIN) |
2435 		  (1 << V4L2_MPEG_VIDEO_H264_PROFILE_HIGH)),
2436 		V4L2_MPEG_VIDEO_H264_PROFILE_HIGH);
2437 	if (ctx->h264_profile_ctrl)
2438 		ctx->h264_profile_ctrl->flags |= V4L2_CTRL_FLAG_READ_ONLY;
2439 
2440 	if (ctx->dev->devtype->product == CODA_HX4 ||
2441 	    ctx->dev->devtype->product == CODA_7541)
2442 		max = V4L2_MPEG_VIDEO_H264_LEVEL_4_0;
2443 	else if (ctx->dev->devtype->product == CODA_960)
2444 		max = V4L2_MPEG_VIDEO_H264_LEVEL_4_1;
2445 	else
2446 		return;
2447 	ctx->h264_level_ctrl = v4l2_ctrl_new_std_menu(&ctx->ctrls,
2448 		&coda_ctrl_ops, V4L2_CID_MPEG_VIDEO_H264_LEVEL, max, 0, max);
2449 	if (ctx->h264_level_ctrl)
2450 		ctx->h264_level_ctrl->flags |= V4L2_CTRL_FLAG_READ_ONLY;
2451 
2452 	ctx->mpeg2_profile_ctrl = v4l2_ctrl_new_std_menu(&ctx->ctrls,
2453 		&coda_ctrl_ops, V4L2_CID_MPEG_VIDEO_MPEG2_PROFILE,
2454 		V4L2_MPEG_VIDEO_MPEG2_PROFILE_HIGH, 0,
2455 		V4L2_MPEG_VIDEO_MPEG2_PROFILE_HIGH);
2456 	if (ctx->mpeg2_profile_ctrl)
2457 		ctx->mpeg2_profile_ctrl->flags |= V4L2_CTRL_FLAG_READ_ONLY;
2458 
2459 	ctx->mpeg2_level_ctrl = v4l2_ctrl_new_std_menu(&ctx->ctrls,
2460 		&coda_ctrl_ops, V4L2_CID_MPEG_VIDEO_MPEG2_LEVEL,
2461 		V4L2_MPEG_VIDEO_MPEG2_LEVEL_HIGH, 0,
2462 		V4L2_MPEG_VIDEO_MPEG2_LEVEL_HIGH);
2463 	if (ctx->mpeg2_level_ctrl)
2464 		ctx->mpeg2_level_ctrl->flags |= V4L2_CTRL_FLAG_READ_ONLY;
2465 
2466 	ctx->mpeg4_profile_ctrl = v4l2_ctrl_new_std_menu(&ctx->ctrls,
2467 		&coda_ctrl_ops, V4L2_CID_MPEG_VIDEO_MPEG4_PROFILE,
2468 		V4L2_MPEG_VIDEO_MPEG4_PROFILE_ADVANCED_CODING_EFFICIENCY, 0,
2469 		V4L2_MPEG_VIDEO_MPEG4_PROFILE_ADVANCED_CODING_EFFICIENCY);
2470 	if (ctx->mpeg4_profile_ctrl)
2471 		ctx->mpeg4_profile_ctrl->flags |= V4L2_CTRL_FLAG_READ_ONLY;
2472 
2473 	ctx->mpeg4_level_ctrl = v4l2_ctrl_new_std_menu(&ctx->ctrls,
2474 		&coda_ctrl_ops, V4L2_CID_MPEG_VIDEO_MPEG4_LEVEL,
2475 		V4L2_MPEG_VIDEO_MPEG4_LEVEL_5, 0,
2476 		V4L2_MPEG_VIDEO_MPEG4_LEVEL_5);
2477 	if (ctx->mpeg4_level_ctrl)
2478 		ctx->mpeg4_level_ctrl->flags |= V4L2_CTRL_FLAG_READ_ONLY;
2479 }
2480 
2481 static const struct v4l2_ctrl_config coda_mb_err_cnt_ctrl_config = {
2482 	.id	= V4L2_CID_CODA_MB_ERR_CNT,
2483 	.name	= "Macroblocks Error Count",
2484 	.type	= V4L2_CTRL_TYPE_INTEGER,
2485 	.min	= 0,
2486 	.max	= 0x7fffffff,
2487 	.step	= 1,
2488 };
2489 
2490 static int coda_ctrls_setup(struct coda_ctx *ctx)
2491 {
2492 	v4l2_ctrl_handler_init(&ctx->ctrls, 2);
2493 
2494 	v4l2_ctrl_new_std(&ctx->ctrls, &coda_ctrl_ops,
2495 		V4L2_CID_HFLIP, 0, 1, 1, 0);
2496 	v4l2_ctrl_new_std(&ctx->ctrls, &coda_ctrl_ops,
2497 		V4L2_CID_VFLIP, 0, 1, 1, 0);
2498 	if (ctx->inst_type == CODA_INST_ENCODER) {
2499 		v4l2_ctrl_new_std(&ctx->ctrls, &coda_ctrl_ops,
2500 				  V4L2_CID_MIN_BUFFERS_FOR_OUTPUT,
2501 				  1, 1, 1, 1);
2502 		if (ctx->cvd->dst_formats[0] == V4L2_PIX_FMT_JPEG)
2503 			coda_jpeg_encode_ctrls(ctx);
2504 		else
2505 			coda_encode_ctrls(ctx);
2506 	} else {
2507 		v4l2_ctrl_new_std(&ctx->ctrls, &coda_ctrl_ops,
2508 				  V4L2_CID_MIN_BUFFERS_FOR_CAPTURE,
2509 				  1, 1, 1, 1);
2510 		if (ctx->cvd->src_formats[0] == V4L2_PIX_FMT_H264)
2511 			coda_decode_ctrls(ctx);
2512 
2513 		ctx->mb_err_cnt_ctrl = v4l2_ctrl_new_custom(&ctx->ctrls,
2514 						&coda_mb_err_cnt_ctrl_config,
2515 						NULL);
2516 		if (ctx->mb_err_cnt_ctrl)
2517 			ctx->mb_err_cnt_ctrl->flags |= V4L2_CTRL_FLAG_READ_ONLY;
2518 	}
2519 
2520 	if (ctx->ctrls.error) {
2521 		v4l2_err(&ctx->dev->v4l2_dev,
2522 			"control initialization error (%d)",
2523 			ctx->ctrls.error);
2524 		return -EINVAL;
2525 	}
2526 
2527 	return v4l2_ctrl_handler_setup(&ctx->ctrls);
2528 }
2529 
2530 static int coda_queue_init(struct coda_ctx *ctx, struct vb2_queue *vq)
2531 {
2532 	vq->drv_priv = ctx;
2533 	vq->ops = &coda_qops;
2534 	vq->buf_struct_size = sizeof(struct v4l2_m2m_buffer);
2535 	vq->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_COPY;
2536 	vq->lock = &ctx->dev->dev_mutex;
2537 	/* One way to indicate end-of-stream for coda is to set the
2538 	 * bytesused == 0. However by default videobuf2 handles bytesused
2539 	 * equal to 0 as a special case and changes its value to the size
2540 	 * of the buffer. Set the allow_zero_bytesused flag, so
2541 	 * that videobuf2 will keep the value of bytesused intact.
2542 	 */
2543 	vq->allow_zero_bytesused = 1;
2544 	/*
2545 	 * We might be fine with no buffers on some of the queues, but that
2546 	 * would need to be reflected in job_ready(). Currently we expect all
2547 	 * queues to have at least one buffer queued.
2548 	 */
2549 	vq->min_buffers_needed = 1;
2550 	vq->dev = ctx->dev->dev;
2551 
2552 	return vb2_queue_init(vq);
2553 }
2554 
2555 int coda_encoder_queue_init(void *priv, struct vb2_queue *src_vq,
2556 			    struct vb2_queue *dst_vq)
2557 {
2558 	int ret;
2559 
2560 	src_vq->type = V4L2_BUF_TYPE_VIDEO_OUTPUT;
2561 	src_vq->io_modes = VB2_DMABUF | VB2_MMAP;
2562 	src_vq->mem_ops = &vb2_dma_contig_memops;
2563 
2564 	ret = coda_queue_init(priv, src_vq);
2565 	if (ret)
2566 		return ret;
2567 
2568 	dst_vq->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
2569 	dst_vq->io_modes = VB2_DMABUF | VB2_MMAP;
2570 	dst_vq->mem_ops = &vb2_dma_contig_memops;
2571 
2572 	return coda_queue_init(priv, dst_vq);
2573 }
2574 
2575 int coda_decoder_queue_init(void *priv, struct vb2_queue *src_vq,
2576 			    struct vb2_queue *dst_vq)
2577 {
2578 	int ret;
2579 
2580 	src_vq->type = V4L2_BUF_TYPE_VIDEO_OUTPUT;
2581 	src_vq->io_modes = VB2_DMABUF | VB2_MMAP | VB2_USERPTR;
2582 	src_vq->mem_ops = &vb2_vmalloc_memops;
2583 
2584 	ret = coda_queue_init(priv, src_vq);
2585 	if (ret)
2586 		return ret;
2587 
2588 	dst_vq->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
2589 	dst_vq->io_modes = VB2_DMABUF | VB2_MMAP;
2590 	dst_vq->dma_attrs = DMA_ATTR_NO_KERNEL_MAPPING;
2591 	dst_vq->mem_ops = &vb2_dma_contig_memops;
2592 
2593 	return coda_queue_init(priv, dst_vq);
2594 }
2595 
2596 /*
2597  * File operations
2598  */
2599 
2600 static int coda_open(struct file *file)
2601 {
2602 	struct video_device *vdev = video_devdata(file);
2603 	struct coda_dev *dev = video_get_drvdata(vdev);
2604 	struct coda_ctx *ctx;
2605 	unsigned int max = ~0;
2606 	char *name;
2607 	int ret;
2608 	int idx;
2609 
2610 	ctx = kzalloc(sizeof(*ctx), GFP_KERNEL);
2611 	if (!ctx)
2612 		return -ENOMEM;
2613 
2614 	if (dev->devtype->product == CODA_DX6)
2615 		max = CODADX6_MAX_INSTANCES - 1;
2616 	idx = ida_alloc_max(&dev->ida, max, GFP_KERNEL);
2617 	if (idx < 0) {
2618 		ret = idx;
2619 		goto err_coda_max;
2620 	}
2621 
2622 	name = kasprintf(GFP_KERNEL, "context%d", idx);
2623 	if (!name) {
2624 		ret = -ENOMEM;
2625 		goto err_coda_name_init;
2626 	}
2627 
2628 	ctx->debugfs_entry = debugfs_create_dir(name, dev->debugfs_root);
2629 	kfree(name);
2630 
2631 	ctx->cvd = to_coda_video_device(vdev);
2632 	ctx->inst_type = ctx->cvd->type;
2633 	ctx->ops = ctx->cvd->ops;
2634 	ctx->use_bit = !ctx->cvd->direct;
2635 	init_completion(&ctx->completion);
2636 	INIT_WORK(&ctx->pic_run_work, coda_pic_run_work);
2637 	if (ctx->ops->seq_init_work)
2638 		INIT_WORK(&ctx->seq_init_work, ctx->ops->seq_init_work);
2639 	if (ctx->ops->seq_end_work)
2640 		INIT_WORK(&ctx->seq_end_work, ctx->ops->seq_end_work);
2641 	v4l2_fh_init(&ctx->fh, video_devdata(file));
2642 	file->private_data = &ctx->fh;
2643 	v4l2_fh_add(&ctx->fh);
2644 	ctx->dev = dev;
2645 	ctx->idx = idx;
2646 
2647 	coda_dbg(1, ctx, "open instance (%p)\n", ctx);
2648 
2649 	switch (dev->devtype->product) {
2650 	case CODA_960:
2651 		/*
2652 		 * Enabling the BWB when decoding can hang the firmware with
2653 		 * certain streams. The issue was tracked as ENGR00293425 by
2654 		 * Freescale. As a workaround, disable BWB for all decoders.
2655 		 * The enable_bwb module parameter allows to override this.
2656 		 */
2657 		if (enable_bwb || ctx->inst_type == CODA_INST_ENCODER)
2658 			ctx->frame_mem_ctrl = CODA9_FRAME_ENABLE_BWB;
2659 		fallthrough;
2660 	case CODA_HX4:
2661 	case CODA_7541:
2662 		ctx->reg_idx = 0;
2663 		break;
2664 	default:
2665 		ctx->reg_idx = idx;
2666 	}
2667 	if (ctx->dev->vdoa && !disable_vdoa) {
2668 		ctx->vdoa = vdoa_context_create(dev->vdoa);
2669 		if (!ctx->vdoa)
2670 			v4l2_warn(&dev->v4l2_dev,
2671 				  "Failed to create vdoa context: not using vdoa");
2672 	}
2673 	ctx->use_vdoa = false;
2674 
2675 	/* Power up and upload firmware if necessary */
2676 	ret = pm_runtime_resume_and_get(dev->dev);
2677 	if (ret < 0) {
2678 		v4l2_err(&dev->v4l2_dev, "failed to power up: %d\n", ret);
2679 		goto err_pm_get;
2680 	}
2681 
2682 	ret = clk_prepare_enable(dev->clk_per);
2683 	if (ret)
2684 		goto err_clk_enable;
2685 
2686 	ret = clk_prepare_enable(dev->clk_ahb);
2687 	if (ret)
2688 		goto err_clk_ahb;
2689 
2690 	set_default_params(ctx);
2691 	ctx->fh.m2m_ctx = v4l2_m2m_ctx_init(dev->m2m_dev, ctx,
2692 					    ctx->ops->queue_init);
2693 	if (IS_ERR(ctx->fh.m2m_ctx)) {
2694 		ret = PTR_ERR(ctx->fh.m2m_ctx);
2695 
2696 		v4l2_err(&dev->v4l2_dev, "%s return error (%d)\n",
2697 			 __func__, ret);
2698 		goto err_ctx_init;
2699 	}
2700 
2701 	ret = coda_ctrls_setup(ctx);
2702 	if (ret) {
2703 		v4l2_err(&dev->v4l2_dev, "failed to setup coda controls\n");
2704 		goto err_ctrls_setup;
2705 	}
2706 
2707 	ctx->fh.ctrl_handler = &ctx->ctrls;
2708 
2709 	mutex_init(&ctx->bitstream_mutex);
2710 	mutex_init(&ctx->buffer_mutex);
2711 	mutex_init(&ctx->wakeup_mutex);
2712 	INIT_LIST_HEAD(&ctx->buffer_meta_list);
2713 	spin_lock_init(&ctx->buffer_meta_lock);
2714 
2715 	return 0;
2716 
2717 err_ctrls_setup:
2718 	v4l2_m2m_ctx_release(ctx->fh.m2m_ctx);
2719 err_ctx_init:
2720 	clk_disable_unprepare(dev->clk_ahb);
2721 err_clk_ahb:
2722 	clk_disable_unprepare(dev->clk_per);
2723 err_clk_enable:
2724 	pm_runtime_put_sync(dev->dev);
2725 err_pm_get:
2726 	v4l2_fh_del(&ctx->fh);
2727 	v4l2_fh_exit(&ctx->fh);
2728 err_coda_name_init:
2729 	ida_free(&dev->ida, ctx->idx);
2730 err_coda_max:
2731 	kfree(ctx);
2732 	return ret;
2733 }
2734 
2735 static int coda_release(struct file *file)
2736 {
2737 	struct coda_dev *dev = video_drvdata(file);
2738 	struct coda_ctx *ctx = fh_to_ctx(file->private_data);
2739 
2740 	coda_dbg(1, ctx, "release instance (%p)\n", ctx);
2741 
2742 	if (ctx->inst_type == CODA_INST_DECODER && ctx->use_bit)
2743 		coda_bit_stream_end_flag(ctx);
2744 
2745 	/* If this instance is running, call .job_abort and wait for it to end */
2746 	v4l2_m2m_ctx_release(ctx->fh.m2m_ctx);
2747 
2748 	if (ctx->vdoa)
2749 		vdoa_context_destroy(ctx->vdoa);
2750 
2751 	/* In case the instance was not running, we still need to call SEQ_END */
2752 	if (ctx->ops->seq_end_work) {
2753 		queue_work(dev->workqueue, &ctx->seq_end_work);
2754 		flush_work(&ctx->seq_end_work);
2755 	}
2756 
2757 	if (ctx->dev->devtype->product == CODA_DX6)
2758 		coda_free_aux_buf(dev, &ctx->workbuf);
2759 
2760 	v4l2_ctrl_handler_free(&ctx->ctrls);
2761 	clk_disable_unprepare(dev->clk_ahb);
2762 	clk_disable_unprepare(dev->clk_per);
2763 	pm_runtime_put_sync(dev->dev);
2764 	v4l2_fh_del(&ctx->fh);
2765 	v4l2_fh_exit(&ctx->fh);
2766 	ida_free(&dev->ida, ctx->idx);
2767 	if (ctx->ops->release)
2768 		ctx->ops->release(ctx);
2769 	debugfs_remove_recursive(ctx->debugfs_entry);
2770 	kfree(ctx);
2771 
2772 	return 0;
2773 }
2774 
2775 static const struct v4l2_file_operations coda_fops = {
2776 	.owner		= THIS_MODULE,
2777 	.open		= coda_open,
2778 	.release	= coda_release,
2779 	.poll		= v4l2_m2m_fop_poll,
2780 	.unlocked_ioctl	= video_ioctl2,
2781 	.mmap		= v4l2_m2m_fop_mmap,
2782 };
2783 
2784 static int coda_hw_init(struct coda_dev *dev)
2785 {
2786 	u32 data;
2787 	u16 *p;
2788 	int i, ret;
2789 
2790 	ret = clk_prepare_enable(dev->clk_per);
2791 	if (ret)
2792 		goto err_clk_per;
2793 
2794 	ret = clk_prepare_enable(dev->clk_ahb);
2795 	if (ret)
2796 		goto err_clk_ahb;
2797 
2798 	reset_control_reset(dev->rstc);
2799 
2800 	/*
2801 	 * Copy the first CODA_ISRAM_SIZE in the internal SRAM.
2802 	 * The 16-bit chars in the code buffer are in memory access
2803 	 * order, re-sort them to CODA order for register download.
2804 	 * Data in this SRAM survives a reboot.
2805 	 */
2806 	p = (u16 *)dev->codebuf.vaddr;
2807 	if (dev->devtype->product == CODA_DX6) {
2808 		for (i = 0; i < (CODA_ISRAM_SIZE / 2); i++)  {
2809 			data = CODA_DOWN_ADDRESS_SET(i) |
2810 				CODA_DOWN_DATA_SET(p[i ^ 1]);
2811 			coda_write(dev, data, CODA_REG_BIT_CODE_DOWN);
2812 		}
2813 	} else {
2814 		for (i = 0; i < (CODA_ISRAM_SIZE / 2); i++) {
2815 			data = CODA_DOWN_ADDRESS_SET(i) |
2816 				CODA_DOWN_DATA_SET(p[round_down(i, 4) +
2817 							3 - (i % 4)]);
2818 			coda_write(dev, data, CODA_REG_BIT_CODE_DOWN);
2819 		}
2820 	}
2821 
2822 	/* Clear registers */
2823 	for (i = 0; i < 64; i++)
2824 		coda_write(dev, 0, CODA_REG_BIT_CODE_BUF_ADDR + i * 4);
2825 
2826 	/* Tell the BIT where to find everything it needs */
2827 	if (dev->devtype->product == CODA_960 ||
2828 	    dev->devtype->product == CODA_7541 ||
2829 	    dev->devtype->product == CODA_HX4) {
2830 		coda_write(dev, dev->tempbuf.paddr,
2831 				CODA_REG_BIT_TEMP_BUF_ADDR);
2832 		coda_write(dev, 0, CODA_REG_BIT_BIT_STREAM_PARAM);
2833 	} else {
2834 		coda_write(dev, dev->workbuf.paddr,
2835 			      CODA_REG_BIT_WORK_BUF_ADDR);
2836 	}
2837 	coda_write(dev, dev->codebuf.paddr,
2838 		      CODA_REG_BIT_CODE_BUF_ADDR);
2839 	coda_write(dev, 0, CODA_REG_BIT_CODE_RUN);
2840 
2841 	/* Set default values */
2842 	switch (dev->devtype->product) {
2843 	case CODA_DX6:
2844 		coda_write(dev, CODADX6_STREAM_BUF_PIC_FLUSH,
2845 			   CODA_REG_BIT_STREAM_CTRL);
2846 		break;
2847 	default:
2848 		coda_write(dev, CODA7_STREAM_BUF_PIC_FLUSH,
2849 			   CODA_REG_BIT_STREAM_CTRL);
2850 	}
2851 	if (dev->devtype->product == CODA_960)
2852 		coda_write(dev, CODA9_FRAME_ENABLE_BWB,
2853 				CODA_REG_BIT_FRAME_MEM_CTRL);
2854 	else
2855 		coda_write(dev, 0, CODA_REG_BIT_FRAME_MEM_CTRL);
2856 
2857 	if (dev->devtype->product != CODA_DX6)
2858 		coda_write(dev, 0, CODA7_REG_BIT_AXI_SRAM_USE);
2859 
2860 	coda_write(dev, CODA_INT_INTERRUPT_ENABLE,
2861 		      CODA_REG_BIT_INT_ENABLE);
2862 
2863 	/* Reset VPU and start processor */
2864 	data = coda_read(dev, CODA_REG_BIT_CODE_RESET);
2865 	data |= CODA_REG_RESET_ENABLE;
2866 	coda_write(dev, data, CODA_REG_BIT_CODE_RESET);
2867 	udelay(10);
2868 	data &= ~CODA_REG_RESET_ENABLE;
2869 	coda_write(dev, data, CODA_REG_BIT_CODE_RESET);
2870 	coda_write(dev, CODA_REG_RUN_ENABLE, CODA_REG_BIT_CODE_RUN);
2871 
2872 	clk_disable_unprepare(dev->clk_ahb);
2873 	clk_disable_unprepare(dev->clk_per);
2874 
2875 	return 0;
2876 
2877 err_clk_ahb:
2878 	clk_disable_unprepare(dev->clk_per);
2879 err_clk_per:
2880 	return ret;
2881 }
2882 
2883 static int coda_register_device(struct coda_dev *dev, int i)
2884 {
2885 	struct video_device *vfd = &dev->vfd[i];
2886 	const char *name;
2887 	int ret;
2888 
2889 	if (i >= dev->devtype->num_vdevs)
2890 		return -EINVAL;
2891 	name = dev->devtype->vdevs[i]->name;
2892 
2893 	strscpy(vfd->name, dev->devtype->vdevs[i]->name, sizeof(vfd->name));
2894 	vfd->fops	= &coda_fops;
2895 	vfd->ioctl_ops	= &coda_ioctl_ops;
2896 	vfd->release	= video_device_release_empty;
2897 	vfd->lock	= &dev->dev_mutex;
2898 	vfd->v4l2_dev	= &dev->v4l2_dev;
2899 	vfd->vfl_dir	= VFL_DIR_M2M;
2900 	vfd->device_caps = V4L2_CAP_VIDEO_M2M | V4L2_CAP_STREAMING;
2901 	video_set_drvdata(vfd, dev);
2902 
2903 	/* Not applicable, use the selection API instead */
2904 	v4l2_disable_ioctl(vfd, VIDIOC_CROPCAP);
2905 	v4l2_disable_ioctl(vfd, VIDIOC_G_CROP);
2906 	v4l2_disable_ioctl(vfd, VIDIOC_S_CROP);
2907 
2908 	if (dev->devtype->vdevs[i]->type == CODA_INST_ENCODER) {
2909 		v4l2_disable_ioctl(vfd, VIDIOC_DECODER_CMD);
2910 		v4l2_disable_ioctl(vfd, VIDIOC_TRY_DECODER_CMD);
2911 		if (dev->devtype->vdevs[i]->dst_formats[0] == V4L2_PIX_FMT_JPEG) {
2912 			v4l2_disable_ioctl(vfd, VIDIOC_ENUM_FRAMEINTERVALS);
2913 			v4l2_disable_ioctl(vfd, VIDIOC_G_PARM);
2914 			v4l2_disable_ioctl(vfd, VIDIOC_S_PARM);
2915 		}
2916 	} else {
2917 		v4l2_disable_ioctl(vfd, VIDIOC_ENCODER_CMD);
2918 		v4l2_disable_ioctl(vfd, VIDIOC_TRY_ENCODER_CMD);
2919 		v4l2_disable_ioctl(vfd, VIDIOC_ENUM_FRAMESIZES);
2920 		v4l2_disable_ioctl(vfd, VIDIOC_ENUM_FRAMEINTERVALS);
2921 		v4l2_disable_ioctl(vfd, VIDIOC_G_PARM);
2922 		v4l2_disable_ioctl(vfd, VIDIOC_S_PARM);
2923 	}
2924 
2925 	ret = video_register_device(vfd, VFL_TYPE_VIDEO, 0);
2926 	if (!ret)
2927 		v4l2_info(&dev->v4l2_dev, "%s registered as %s\n",
2928 			  name, video_device_node_name(vfd));
2929 	return ret;
2930 }
2931 
2932 static void coda_copy_firmware(struct coda_dev *dev, const u8 * const buf,
2933 			       size_t size)
2934 {
2935 	u32 *src = (u32 *)buf;
2936 
2937 	/* Check if the firmware has a 16-byte Freescale header, skip it */
2938 	if (buf[0] == 'M' && buf[1] == 'X')
2939 		src += 4;
2940 	/*
2941 	 * Check whether the firmware is in native order or pre-reordered for
2942 	 * memory access. The first instruction opcode always is 0xe40e.
2943 	 */
2944 	if (__le16_to_cpup((__le16 *)src) == 0xe40e) {
2945 		u32 *dst = dev->codebuf.vaddr;
2946 		int i;
2947 
2948 		/* Firmware in native order, reorder while copying */
2949 		if (dev->devtype->product == CODA_DX6) {
2950 			for (i = 0; i < (size - 16) / 4; i++)
2951 				dst[i] = (src[i] << 16) | (src[i] >> 16);
2952 		} else {
2953 			for (i = 0; i < (size - 16) / 4; i += 2) {
2954 				dst[i] = (src[i + 1] << 16) | (src[i + 1] >> 16);
2955 				dst[i + 1] = (src[i] << 16) | (src[i] >> 16);
2956 			}
2957 		}
2958 	} else {
2959 		/* Copy the already reordered firmware image */
2960 		memcpy(dev->codebuf.vaddr, src, size);
2961 	}
2962 }
2963 
2964 static void coda_fw_callback(const struct firmware *fw, void *context);
2965 
2966 static int coda_firmware_request(struct coda_dev *dev)
2967 {
2968 	char *fw;
2969 
2970 	if (dev->firmware >= ARRAY_SIZE(dev->devtype->firmware))
2971 		return -EINVAL;
2972 
2973 	fw = dev->devtype->firmware[dev->firmware];
2974 
2975 	dev_dbg(dev->dev, "requesting firmware '%s' for %s\n", fw,
2976 		coda_product_name(dev->devtype->product));
2977 
2978 	return request_firmware_nowait(THIS_MODULE, true, fw, dev->dev,
2979 				       GFP_KERNEL, dev, coda_fw_callback);
2980 }
2981 
2982 static void coda_fw_callback(const struct firmware *fw, void *context)
2983 {
2984 	struct coda_dev *dev = context;
2985 	int i, ret;
2986 
2987 	if (!fw) {
2988 		dev->firmware++;
2989 		ret = coda_firmware_request(dev);
2990 		if (ret < 0) {
2991 			v4l2_err(&dev->v4l2_dev, "firmware request failed\n");
2992 			goto put_pm;
2993 		}
2994 		return;
2995 	}
2996 	if (dev->firmware > 0) {
2997 		/*
2998 		 * Since we can't suppress warnings for failed asynchronous
2999 		 * firmware requests, report that the fallback firmware was
3000 		 * found.
3001 		 */
3002 		dev_info(dev->dev, "Using fallback firmware %s\n",
3003 			 dev->devtype->firmware[dev->firmware]);
3004 	}
3005 
3006 	/* allocate auxiliary per-device code buffer for the BIT processor */
3007 	ret = coda_alloc_aux_buf(dev, &dev->codebuf, fw->size, "codebuf",
3008 				 dev->debugfs_root);
3009 	if (ret < 0)
3010 		goto put_pm;
3011 
3012 	coda_copy_firmware(dev, fw->data, fw->size);
3013 	release_firmware(fw);
3014 
3015 	ret = coda_hw_init(dev);
3016 	if (ret < 0) {
3017 		v4l2_err(&dev->v4l2_dev, "HW initialization failed\n");
3018 		goto put_pm;
3019 	}
3020 
3021 	ret = coda_check_firmware(dev);
3022 	if (ret < 0)
3023 		goto put_pm;
3024 
3025 	dev->m2m_dev = v4l2_m2m_init(&coda_m2m_ops);
3026 	if (IS_ERR(dev->m2m_dev)) {
3027 		v4l2_err(&dev->v4l2_dev, "Failed to init mem2mem device\n");
3028 		goto put_pm;
3029 	}
3030 
3031 	for (i = 0; i < dev->devtype->num_vdevs; i++) {
3032 		ret = coda_register_device(dev, i);
3033 		if (ret) {
3034 			v4l2_err(&dev->v4l2_dev,
3035 				 "Failed to register %s video device: %d\n",
3036 				 dev->devtype->vdevs[i]->name, ret);
3037 			goto rel_vfd;
3038 		}
3039 	}
3040 
3041 	pm_runtime_put_sync(dev->dev);
3042 	return;
3043 
3044 rel_vfd:
3045 	while (--i >= 0)
3046 		video_unregister_device(&dev->vfd[i]);
3047 	v4l2_m2m_release(dev->m2m_dev);
3048 put_pm:
3049 	pm_runtime_put_sync(dev->dev);
3050 }
3051 
3052 enum coda_platform {
3053 	CODA_IMX27,
3054 	CODA_IMX51,
3055 	CODA_IMX53,
3056 	CODA_IMX6Q,
3057 	CODA_IMX6DL,
3058 };
3059 
3060 static const struct coda_devtype coda_devdata[] = {
3061 	[CODA_IMX27] = {
3062 		.firmware     = {
3063 			"vpu_fw_imx27_TO2.bin",
3064 			"vpu/vpu_fw_imx27_TO2.bin",
3065 			"v4l-codadx6-imx27.bin"
3066 		},
3067 		.product      = CODA_DX6,
3068 		.codecs       = codadx6_codecs,
3069 		.num_codecs   = ARRAY_SIZE(codadx6_codecs),
3070 		.vdevs        = codadx6_video_devices,
3071 		.num_vdevs    = ARRAY_SIZE(codadx6_video_devices),
3072 		.workbuf_size = 288 * 1024 + FMO_SLICE_SAVE_BUF_SIZE * 8 * 1024,
3073 		.iram_size    = 0xb000,
3074 	},
3075 	[CODA_IMX51] = {
3076 		.firmware     = {
3077 			"vpu_fw_imx51.bin",
3078 			"vpu/vpu_fw_imx51.bin",
3079 			"v4l-codahx4-imx51.bin"
3080 		},
3081 		.product      = CODA_HX4,
3082 		.codecs       = codahx4_codecs,
3083 		.num_codecs   = ARRAY_SIZE(codahx4_codecs),
3084 		.vdevs        = codahx4_video_devices,
3085 		.num_vdevs    = ARRAY_SIZE(codahx4_video_devices),
3086 		.workbuf_size = 128 * 1024,
3087 		.tempbuf_size = 304 * 1024,
3088 		.iram_size    = 0x14000,
3089 	},
3090 	[CODA_IMX53] = {
3091 		.firmware     = {
3092 			"vpu_fw_imx53.bin",
3093 			"vpu/vpu_fw_imx53.bin",
3094 			"v4l-coda7541-imx53.bin"
3095 		},
3096 		.product      = CODA_7541,
3097 		.codecs       = coda7_codecs,
3098 		.num_codecs   = ARRAY_SIZE(coda7_codecs),
3099 		.vdevs        = coda7_video_devices,
3100 		.num_vdevs    = ARRAY_SIZE(coda7_video_devices),
3101 		.workbuf_size = 128 * 1024,
3102 		.tempbuf_size = 304 * 1024,
3103 		.iram_size    = 0x14000,
3104 	},
3105 	[CODA_IMX6Q] = {
3106 		.firmware     = {
3107 			"vpu_fw_imx6q.bin",
3108 			"vpu/vpu_fw_imx6q.bin",
3109 			"v4l-coda960-imx6q.bin"
3110 		},
3111 		.product      = CODA_960,
3112 		.codecs       = coda9_codecs,
3113 		.num_codecs   = ARRAY_SIZE(coda9_codecs),
3114 		.vdevs        = coda9_video_devices,
3115 		.num_vdevs    = ARRAY_SIZE(coda9_video_devices),
3116 		.workbuf_size = 80 * 1024,
3117 		.tempbuf_size = 204 * 1024,
3118 		.iram_size    = 0x21000,
3119 	},
3120 	[CODA_IMX6DL] = {
3121 		.firmware     = {
3122 			"vpu_fw_imx6d.bin",
3123 			"vpu/vpu_fw_imx6d.bin",
3124 			"v4l-coda960-imx6dl.bin"
3125 		},
3126 		.product      = CODA_960,
3127 		.codecs       = coda9_codecs,
3128 		.num_codecs   = ARRAY_SIZE(coda9_codecs),
3129 		.vdevs        = coda9_video_devices,
3130 		.num_vdevs    = ARRAY_SIZE(coda9_video_devices),
3131 		.workbuf_size = 80 * 1024,
3132 		.tempbuf_size = 204 * 1024,
3133 		.iram_size    = 0x1f000, /* leave 4k for suspend code */
3134 	},
3135 };
3136 
3137 static const struct of_device_id coda_dt_ids[] = {
3138 	{ .compatible = "fsl,imx27-vpu", .data = &coda_devdata[CODA_IMX27] },
3139 	{ .compatible = "fsl,imx51-vpu", .data = &coda_devdata[CODA_IMX51] },
3140 	{ .compatible = "fsl,imx53-vpu", .data = &coda_devdata[CODA_IMX53] },
3141 	{ .compatible = "fsl,imx6q-vpu", .data = &coda_devdata[CODA_IMX6Q] },
3142 	{ .compatible = "fsl,imx6dl-vpu", .data = &coda_devdata[CODA_IMX6DL] },
3143 	{ /* sentinel */ }
3144 };
3145 MODULE_DEVICE_TABLE(of, coda_dt_ids);
3146 
3147 static int coda_probe(struct platform_device *pdev)
3148 {
3149 	struct device_node *np = pdev->dev.of_node;
3150 	struct gen_pool *pool;
3151 	struct coda_dev *dev;
3152 	int ret, irq;
3153 
3154 	dev = devm_kzalloc(&pdev->dev, sizeof(*dev), GFP_KERNEL);
3155 	if (!dev)
3156 		return -ENOMEM;
3157 
3158 	dev->devtype = of_device_get_match_data(&pdev->dev);
3159 
3160 	dev->dev = &pdev->dev;
3161 	dev->clk_per = devm_clk_get(&pdev->dev, "per");
3162 	if (IS_ERR(dev->clk_per)) {
3163 		dev_err(&pdev->dev, "Could not get per clock\n");
3164 		return PTR_ERR(dev->clk_per);
3165 	}
3166 
3167 	dev->clk_ahb = devm_clk_get(&pdev->dev, "ahb");
3168 	if (IS_ERR(dev->clk_ahb)) {
3169 		dev_err(&pdev->dev, "Could not get ahb clock\n");
3170 		return PTR_ERR(dev->clk_ahb);
3171 	}
3172 
3173 	/* Get  memory for physical registers */
3174 	dev->regs_base = devm_platform_ioremap_resource(pdev, 0);
3175 	if (IS_ERR(dev->regs_base))
3176 		return PTR_ERR(dev->regs_base);
3177 
3178 	/* IRQ */
3179 	irq = platform_get_irq_byname(pdev, "bit");
3180 	if (irq < 0)
3181 		irq = platform_get_irq(pdev, 0);
3182 	if (irq < 0)
3183 		return irq;
3184 
3185 	ret = devm_request_irq(&pdev->dev, irq, coda_irq_handler, 0,
3186 			       CODA_NAME "-video", dev);
3187 	if (ret < 0) {
3188 		dev_err(&pdev->dev, "failed to request irq: %d\n", ret);
3189 		return ret;
3190 	}
3191 
3192 	/* JPEG IRQ */
3193 	if (dev->devtype->product == CODA_960) {
3194 		irq = platform_get_irq_byname(pdev, "jpeg");
3195 		if (irq < 0)
3196 			return irq;
3197 
3198 		ret = devm_request_threaded_irq(&pdev->dev, irq, NULL,
3199 						coda9_jpeg_irq_handler,
3200 						IRQF_ONESHOT, CODA_NAME "-jpeg",
3201 						dev);
3202 		if (ret < 0) {
3203 			dev_err(&pdev->dev, "failed to request jpeg irq\n");
3204 			return ret;
3205 		}
3206 	}
3207 
3208 	dev->rstc = devm_reset_control_get_optional_exclusive(&pdev->dev,
3209 							      NULL);
3210 	if (IS_ERR(dev->rstc)) {
3211 		ret = PTR_ERR(dev->rstc);
3212 		dev_err(&pdev->dev, "failed get reset control: %d\n", ret);
3213 		return ret;
3214 	}
3215 
3216 	/* Get IRAM pool from device tree */
3217 	pool = of_gen_pool_get(np, "iram", 0);
3218 	if (!pool) {
3219 		dev_err(&pdev->dev, "iram pool not available\n");
3220 		return -ENOMEM;
3221 	}
3222 	dev->iram_pool = pool;
3223 
3224 	/* Get vdoa_data if supported by the platform */
3225 	dev->vdoa = coda_get_vdoa_data();
3226 	if (PTR_ERR(dev->vdoa) == -EPROBE_DEFER)
3227 		return -EPROBE_DEFER;
3228 
3229 	ret = v4l2_device_register(&pdev->dev, &dev->v4l2_dev);
3230 	if (ret)
3231 		return ret;
3232 
3233 	ratelimit_default_init(&dev->mb_err_rs);
3234 	mutex_init(&dev->dev_mutex);
3235 	mutex_init(&dev->coda_mutex);
3236 	ida_init(&dev->ida);
3237 
3238 	dev->debugfs_root = debugfs_create_dir("coda", NULL);
3239 
3240 	/* allocate auxiliary per-device buffers for the BIT processor */
3241 	if (dev->devtype->product == CODA_DX6) {
3242 		ret = coda_alloc_aux_buf(dev, &dev->workbuf,
3243 					 dev->devtype->workbuf_size, "workbuf",
3244 					 dev->debugfs_root);
3245 		if (ret < 0)
3246 			goto err_v4l2_register;
3247 	}
3248 
3249 	if (dev->devtype->tempbuf_size) {
3250 		ret = coda_alloc_aux_buf(dev, &dev->tempbuf,
3251 					 dev->devtype->tempbuf_size, "tempbuf",
3252 					 dev->debugfs_root);
3253 		if (ret < 0)
3254 			goto err_v4l2_register;
3255 	}
3256 
3257 	dev->iram.size = dev->devtype->iram_size;
3258 	dev->iram.vaddr = gen_pool_dma_alloc(dev->iram_pool, dev->iram.size,
3259 					     &dev->iram.paddr);
3260 	if (!dev->iram.vaddr) {
3261 		dev_warn(&pdev->dev, "unable to alloc iram\n");
3262 	} else {
3263 		memset(dev->iram.vaddr, 0, dev->iram.size);
3264 		dev->iram.blob.data = dev->iram.vaddr;
3265 		dev->iram.blob.size = dev->iram.size;
3266 		dev->iram.dentry = debugfs_create_blob("iram", 0444,
3267 						       dev->debugfs_root,
3268 						       &dev->iram.blob);
3269 	}
3270 
3271 	dev->workqueue = alloc_ordered_workqueue("coda", WQ_MEM_RECLAIM);
3272 	if (!dev->workqueue) {
3273 		dev_err(&pdev->dev, "unable to alloc workqueue\n");
3274 		ret = -ENOMEM;
3275 		goto err_v4l2_register;
3276 	}
3277 
3278 	platform_set_drvdata(pdev, dev);
3279 
3280 	/*
3281 	 * Start activated so we can directly call coda_hw_init in
3282 	 * coda_fw_callback regardless of whether CONFIG_PM is
3283 	 * enabled or whether the device is associated with a PM domain.
3284 	 */
3285 	pm_runtime_get_noresume(&pdev->dev);
3286 	pm_runtime_set_active(&pdev->dev);
3287 	pm_runtime_enable(&pdev->dev);
3288 
3289 	ret = coda_firmware_request(dev);
3290 	if (ret)
3291 		goto err_alloc_workqueue;
3292 	return 0;
3293 
3294 err_alloc_workqueue:
3295 	pm_runtime_disable(&pdev->dev);
3296 	pm_runtime_put_noidle(&pdev->dev);
3297 	destroy_workqueue(dev->workqueue);
3298 err_v4l2_register:
3299 	v4l2_device_unregister(&dev->v4l2_dev);
3300 	return ret;
3301 }
3302 
3303 static void coda_remove(struct platform_device *pdev)
3304 {
3305 	struct coda_dev *dev = platform_get_drvdata(pdev);
3306 	int i;
3307 
3308 	for (i = 0; i < ARRAY_SIZE(dev->vfd); i++) {
3309 		if (video_get_drvdata(&dev->vfd[i]))
3310 			video_unregister_device(&dev->vfd[i]);
3311 	}
3312 	if (dev->m2m_dev)
3313 		v4l2_m2m_release(dev->m2m_dev);
3314 	pm_runtime_disable(&pdev->dev);
3315 	v4l2_device_unregister(&dev->v4l2_dev);
3316 	destroy_workqueue(dev->workqueue);
3317 	if (dev->iram.vaddr)
3318 		gen_pool_free(dev->iram_pool, (unsigned long)dev->iram.vaddr,
3319 			      dev->iram.size);
3320 	coda_free_aux_buf(dev, &dev->codebuf);
3321 	coda_free_aux_buf(dev, &dev->tempbuf);
3322 	coda_free_aux_buf(dev, &dev->workbuf);
3323 	debugfs_remove_recursive(dev->debugfs_root);
3324 	ida_destroy(&dev->ida);
3325 }
3326 
3327 #ifdef CONFIG_PM
3328 static int coda_runtime_resume(struct device *dev)
3329 {
3330 	struct coda_dev *cdev = dev_get_drvdata(dev);
3331 	int ret = 0;
3332 
3333 	if (dev->pm_domain && cdev->codebuf.vaddr) {
3334 		ret = coda_hw_init(cdev);
3335 		if (ret)
3336 			v4l2_err(&cdev->v4l2_dev, "HW initialization failed\n");
3337 	}
3338 
3339 	return ret;
3340 }
3341 #endif
3342 
3343 static const struct dev_pm_ops coda_pm_ops = {
3344 	SET_RUNTIME_PM_OPS(NULL, coda_runtime_resume, NULL)
3345 };
3346 
3347 static struct platform_driver coda_driver = {
3348 	.probe	= coda_probe,
3349 	.remove_new = coda_remove,
3350 	.driver	= {
3351 		.name	= CODA_NAME,
3352 		.of_match_table = coda_dt_ids,
3353 		.pm	= &coda_pm_ops,
3354 	},
3355 };
3356 
3357 module_platform_driver(coda_driver);
3358 
3359 MODULE_LICENSE("GPL");
3360 MODULE_AUTHOR("Javier Martin <javier.martin@vista-silicon.com>");
3361 MODULE_DESCRIPTION("Coda multi-standard codec V4L2 driver");
3362