aboutsummaryrefslogtreecommitdiffstats
path: root/drivers/media/platform/vimc/vimc-common.c
blob: 03016f204d056190edaa6b4daba0452113d42528 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
// SPDX-License-Identifier: GPL-2.0-or-later
/*
 * vimc-common.c Virtual Media Controller Driver
 *
 * Copyright (C) 2015-2017 Helen Koike <helen.fornazier@gmail.com>
 */

#include <linux/init.h>
#include <linux/module.h>

#include "vimc-common.h"

static const __u32 vimc_mbus_list[] = {
	MEDIA_BUS_FMT_FIXED,
	MEDIA_BUS_FMT_RGB444_1X12,
	MEDIA_BUS_FMT_RGB444_2X8_PADHI_BE,
	MEDIA_BUS_FMT_RGB444_2X8_PADHI_LE,
	MEDIA_BUS_FMT_RGB555_2X8_PADHI_BE,
	MEDIA_BUS_FMT_RGB555_2X8_PADHI_LE,
	MEDIA_BUS_FMT_RGB565_1X16,
	MEDIA_BUS_FMT_BGR565_2X8_BE,
	MEDIA_BUS_FMT_BGR565_2X8_LE,
	MEDIA_BUS_FMT_RGB565_2X8_BE,
	MEDIA_BUS_FMT_RGB565_2X8_LE,
	MEDIA_BUS_FMT_RGB666_1X18,
	MEDIA_BUS_FMT_RBG888_1X24,
	MEDIA_BUS_FMT_RGB666_1X24_CPADHI,
	MEDIA_BUS_FMT_RGB666_1X7X3_SPWG,
	MEDIA_BUS_FMT_BGR888_1X24,
	MEDIA_BUS_FMT_GBR888_1X24,
	MEDIA_BUS_FMT_RGB888_1X24,
	MEDIA_BUS_FMT_RGB888_2X12_BE,
	MEDIA_BUS_FMT_RGB888_2X12_LE,
	MEDIA_BUS_FMT_RGB888_1X7X4_SPWG,
	MEDIA_BUS_FMT_RGB888_1X7X4_JEIDA,
	MEDIA_BUS_FMT_ARGB8888_1X32,
	MEDIA_BUS_FMT_RGB888_1X32_PADHI,
	MEDIA_BUS_FMT_RGB101010_1X30,
	MEDIA_BUS_FMT_RGB121212_1X36,
	MEDIA_BUS_FMT_RGB161616_1X48,
	MEDIA_BUS_FMT_Y8_1X8,
	MEDIA_BUS_FMT_UV8_1X8,
	MEDIA_BUS_FMT_UYVY8_1_5X8,
	MEDIA_BUS_FMT_VYUY8_1_5X8,
	MEDIA_BUS_FMT_YUYV8_1_5X8,
	MEDIA_BUS_FMT_YVYU8_1_5X8,
	MEDIA_BUS_FMT_UYVY8_2X8,
	MEDIA_BUS_FMT_VYUY8_2X8,
	MEDIA_BUS_FMT_YUYV8_2X8,
	MEDIA_BUS_FMT_YVYU8_2X8,
	MEDIA_BUS_FMT_Y10_1X10,
	MEDIA_BUS_FMT_Y10_2X8_PADHI_LE,
	MEDIA_BUS_FMT_UYVY10_2X10,
	MEDIA_BUS_FMT_VYUY10_2X10,
	MEDIA_BUS_FMT_YUYV10_2X10,
	MEDIA_BUS_FMT_YVYU10_2X10,
	MEDIA_BUS_FMT_Y12_1X12,
	MEDIA_BUS_FMT_UYVY12_2X12,
	MEDIA_BUS_FMT_VYUY12_2X12,
	MEDIA_BUS_FMT_YUYV12_2X12,
	MEDIA_BUS_FMT_YVYU12_2X12,
	MEDIA_BUS_FMT_UYVY8_1X16,
	MEDIA_BUS_FMT_VYUY8_1X16,
	MEDIA_BUS_FMT_YUYV8_1X16,
	MEDIA_BUS_FMT_YVYU8_1X16,
	MEDIA_BUS_FMT_YDYUYDYV8_1X16,
	MEDIA_BUS_FMT_UYVY10_1X20,
	MEDIA_BUS_FMT_VYUY10_1X20,
	MEDIA_BUS_FMT_YUYV10_1X20,
	MEDIA_BUS_FMT_YVYU10_1X20,
	MEDIA_BUS_FMT_VUY8_1X24,
	MEDIA_BUS_FMT_YUV8_1X24,
	MEDIA_BUS_FMT_UYYVYY8_0_5X24,
	MEDIA_BUS_FMT_UYVY12_1X24,
	MEDIA_BUS_FMT_VYUY12_1X24,
	MEDIA_BUS_FMT_YUYV12_1X24,
	MEDIA_BUS_FMT_YVYU12_1X24,
	MEDIA_BUS_FMT_YUV10_1X30,
	MEDIA_BUS_FMT_UYYVYY10_0_5X30,
	MEDIA_BUS_FMT_AYUV8_1X32,
	MEDIA_BUS_FMT_UYYVYY12_0_5X36,
	MEDIA_BUS_FMT_YUV12_1X36,
	MEDIA_BUS_FMT_YUV16_1X48,
	MEDIA_BUS_FMT_UYYVYY16_0_5X48,
	MEDIA_BUS_FMT_SBGGR8_1X8,
	MEDIA_BUS_FMT_SGBRG8_1X8,
	MEDIA_BUS_FMT_SGRBG8_1X8,
	MEDIA_BUS_FMT_SRGGB8_1X8,
	MEDIA_BUS_FMT_SBGGR10_ALAW8_1X8,
	MEDIA_BUS_FMT_SGBRG10_ALAW8_1X8,
	MEDIA_BUS_FMT_SGRBG10_ALAW8_1X8,
	MEDIA_BUS_FMT_SRGGB10_ALAW8_1X8,
	MEDIA_BUS_FMT_SBGGR10_DPCM8_1X8,
	MEDIA_BUS_FMT_SGBRG10_DPCM8_1X8,
	MEDIA_BUS_FMT_SGRBG10_DPCM8_1X8,
	MEDIA_BUS_FMT_SRGGB10_DPCM8_1X8,
	MEDIA_BUS_FMT_SBGGR10_2X8_PADHI_BE,
	MEDIA_BUS_FMT_SBGGR10_2X8_PADHI_LE,
	MEDIA_BUS_FMT_SBGGR10_2X8_PADLO_BE,
	MEDIA_BUS_FMT_SBGGR10_2X8_PADLO_LE,
	MEDIA_BUS_FMT_SBGGR10_1X10,
	MEDIA_BUS_FMT_SGBRG10_1X10,
	MEDIA_BUS_FMT_SGRBG10_1X10,
	MEDIA_BUS_FMT_SRGGB10_1X10,
	MEDIA_BUS_FMT_SBGGR12_1X12,
	MEDIA_BUS_FMT_SGBRG12_1X12,
	MEDIA_BUS_FMT_SGRBG12_1X12,
	MEDIA_BUS_FMT_SRGGB12_1X12,
	MEDIA_BUS_FMT_SBGGR14_1X14,
	MEDIA_BUS_FMT_SGBRG14_1X14,
	MEDIA_BUS_FMT_SGRBG14_1X14,
	MEDIA_BUS_FMT_SRGGB14_1X14,
	MEDIA_BUS_FMT_SBGGR16_1X16,
	MEDIA_BUS_FMT_SGBRG16_1X16,
	MEDIA_BUS_FMT_SGRBG16_1X16,
	MEDIA_BUS_FMT_SRGGB16_1X16,
	MEDIA_BUS_FMT_JPEG_1X8,
	MEDIA_BUS_FMT_S5C_UYVY_JPEG_1X8,
	MEDIA_BUS_FMT_AHSV8888_1X32,
};

/* Helper function to check mbus codes */
bool vimc_mbus_code_supported(__u32 code)
{
	unsigned int i;

	for (i = 0; i < ARRAY_SIZE(vimc_mbus_list); i++)
		if (code == vimc_mbus_list[i])
			return true;
	return false;
}
EXPORT_SYMBOL_GPL(vimc_mbus_code_supported);

/* Helper function to enumerate mbus codes */
int vimc_enum_mbus_code(struct v4l2_subdev *sd,
			struct v4l2_subdev_pad_config *cfg,
			struct v4l2_subdev_mbus_code_enum *code)
{
	if (code->index >= ARRAY_SIZE(vimc_mbus_list))
		return -EINVAL;

	code->code = vimc_mbus_list[code->index];
	return 0;
}
EXPORT_SYMBOL_GPL(vimc_enum_mbus_code);

/* Helper function to allocate and initialize pads */
struct media_pad *vimc_pads_init(u16 num_pads, const unsigned long *pads_flag)
{
	struct media_pad *pads;
	unsigned int i;

	/* Allocate memory for the pads */
	pads = kcalloc(num_pads, sizeof(*pads), GFP_KERNEL);
	if (!pads)
		return ERR_PTR(-ENOMEM);

	/* Initialize the pads */
	for (i = 0; i < num_pads; i++) {
		pads[i].index = i;
		pads[i].flags = pads_flag[i];
	}

	return pads;
}
EXPORT_SYMBOL_GPL(vimc_pads_init);

int vimc_pipeline_s_stream(struct media_entity *ent, int enable)
{
	struct v4l2_subdev *sd;
	struct media_pad *pad;
	unsigned int i;
	int ret;

	for (i = 0; i < ent->num_pads; i++) {
		if (ent->pads[i].flags & MEDIA_PAD_FL_SOURCE)
			continue;

		/* Start the stream in the subdevice direct connected */
		pad = media_entity_remote_pad(&ent->pads[i]);
		if (!pad)
			continue;

		if (!is_media_entity_v4l2_subdev(pad->entity))
			return -EINVAL;

		sd = media_entity_to_v4l2_subdev(pad->entity);
		ret = v4l2_subdev_call(sd, video, s_stream, enable);
		if (ret && ret != -ENOIOCTLCMD)
			return ret;
	}

	return 0;
}
EXPORT_SYMBOL_GPL(vimc_pipeline_s_stream);

static int vimc_get_mbus_format(struct media_pad *pad,
				struct v4l2_subdev_format *fmt)
{
	if (is_media_entity_v4l2_subdev(pad->entity)) {
		struct v4l2_subdev *sd =
			media_entity_to_v4l2_subdev(pad->entity);
		int ret;

		fmt->which = V4L2_SUBDEV_FORMAT_ACTIVE;
		fmt->pad = pad->index;

		ret = v4l2_subdev_call(sd, pad, get_fmt, NULL, fmt);
		if (ret)
			return ret;

	} else if (is_media_entity_v4l2_video_device(pad->entity)) {
		struct video_device *vdev = container_of(pad->entity,
							 struct video_device,
							 entity);
		struct vimc_ent_device *ved = video_get_drvdata(vdev);
		struct v4l2_pix_format vdev_fmt;

		if (!ved->vdev_get_format)
			return -ENOIOCTLCMD;

		ved->vdev_get_format(ved, &vdev_fmt);
		v4l2_fill_mbus_format(&fmt->format, &vdev_fmt, 0);
	} else {
		return -EINVAL;
	}

	return 0;
}

int vimc_link_validate(struct media_link *link)
{
	struct v4l2_subdev_format source_fmt, sink_fmt;
	int ret;

	ret = vimc_get_mbus_format(link->source, &source_fmt);
	if (ret)
		return ret;

	ret = vimc_get_mbus_format(link->sink, &sink_fmt);
	if (ret)
		return ret;

	pr_info("vimc link validate: "
		"%s:src:%dx%d (0x%x, %d, %d, %d, %d) "
		"%s:snk:%dx%d (0x%x, %d, %d, %d, %d)\n",
		/* src */
		link->source->entity->name,
		source_fmt.format.width, source_fmt.format.height,
		source_fmt.format.code, source_fmt.format.colorspace,
		source_fmt.format.quantization, source_fmt.format.xfer_func,
		source_fmt.format.ycbcr_enc,
		/* sink */
		link->sink->entity->name,
		sink_fmt.format.width, sink_fmt.format.height,
		sink_fmt.format.code, sink_fmt.format.colorspace,
		sink_fmt.format.quantization, sink_fmt.format.xfer_func,
		sink_fmt.format.ycbcr_enc);

	/* The width, height and code must match. */
	if (source_fmt.format.width != sink_fmt.format.width
	    || source_fmt.format.height != sink_fmt.format.height
	    || (source_fmt.format.code && sink_fmt.format.code &&
		source_fmt.format.code != sink_fmt.format.code)) {
		pr_err("vimc: format doesn't match in link %s->%s\n",
			link->source->entity->name, link->sink->entity->name);
		return -EPIPE;
	}

	/*
	 * The field order must match, or the sink field order must be NONE
	 * to support interlaced hardware connected to bridges that support
	 * progressive formats only.
	 */
	if (source_fmt.format.field != sink_fmt.format.field &&
	    sink_fmt.format.field != V4L2_FIELD_NONE)
		return -EPIPE;

	/*
	 * If colorspace is DEFAULT, then assume all the colorimetry is also
	 * DEFAULT, return 0 to skip comparing the other colorimetry parameters
	 */
	if (source_fmt.format.colorspace == V4L2_COLORSPACE_DEFAULT
	    || sink_fmt.format.colorspace == V4L2_COLORSPACE_DEFAULT)
		return 0;

	/* Colorspace must match. */
	if (source_fmt.format.colorspace != sink_fmt.format.colorspace)
		return -EPIPE;

	/* Colorimetry must match if they are not set to DEFAULT */
	if (source_fmt.format.ycbcr_enc != V4L2_YCBCR_ENC_DEFAULT
	    && sink_fmt.format.ycbcr_enc != V4L2_YCBCR_ENC_DEFAULT
	    && source_fmt.format.ycbcr_enc != sink_fmt.format.ycbcr_enc)
		return -EPIPE;

	if (source_fmt.format.quantization != V4L2_QUANTIZATION_DEFAULT
	    && sink_fmt.format.quantization != V4L2_QUANTIZATION_DEFAULT
	    && source_fmt.format.quantization != sink_fmt.format.quantization)
		return -EPIPE;

	if (source_fmt.format.xfer_func != V4L2_XFER_FUNC_DEFAULT
	    && sink_fmt.format.xfer_func != V4L2_XFER_FUNC_DEFAULT
	    && source_fmt.format.xfer_func != sink_fmt.format.xfer_func)
		return -EPIPE;

	return 0;
}
EXPORT_SYMBOL_GPL(vimc_link_validate);

static const struct media_entity_operations vimc_ent_sd_mops = {
	.link_validate = vimc_link_validate,
};

int vimc_ent_sd_register(struct vimc_ent_device *ved,
			 struct v4l2_subdev *sd,
			 struct v4l2_device *v4l2_dev,
			 const char *const name,
			 u32 function,
			 u16 num_pads,
			 const unsigned long *pads_flag,
			 const struct v4l2_subdev_internal_ops *sd_int_ops,
			 const struct v4l2_subdev_ops *sd_ops)
{
	int ret;

	/* Allocate the pads */
	ved->pads = vimc_pads_init(num_pads, pads_flag);
	if (IS_ERR(ved->pads))
		return PTR_ERR(ved->pads);

	/* Fill the vimc_ent_device struct */
	ved->ent = &sd->entity;

	/* Initialize the subdev */
	v4l2_subdev_init(sd, sd_ops);
	sd->internal_ops = sd_int_ops;
	sd->entity.function = function;
	sd->entity.ops = &vimc_ent_sd_mops;
	sd->owner = THIS_MODULE;
	strscpy(sd->name, name, sizeof(sd->name));
	v4l2_set_subdevdata(sd, ved);

	/* Expose this subdev to user space */
	sd->flags |= V4L2_SUBDEV_FL_HAS_DEVNODE;
	if (sd->ctrl_handler)
		sd->flags |= V4L2_SUBDEV_FL_HAS_EVENTS;

	/* Initialize the media entity */
	ret = media_entity_pads_init(&sd->entity, num_pads, ved->pads);
	if (ret)
		goto err_clean_pads;

	/* Register the subdev with the v4l2 and the media framework */
	ret = v4l2_device_register_subdev(v4l2_dev, sd);
	if (ret) {
		dev_err(v4l2_dev->dev,
			"%s: subdev register failed (err=%d)\n",
			name, ret);
		goto err_clean_m_ent;
	}

	return 0;

err_clean_m_ent:
	media_entity_cleanup(&sd->entity);
err_clean_pads:
	vimc_pads_cleanup(ved->pads);
	return ret;
}
EXPORT_SYMBOL_GPL(vimc_ent_sd_register);

void vimc_ent_sd_unregister(struct vimc_ent_device *ved, struct v4l2_subdev *sd)
{
	media_entity_cleanup(ved->ent);
	vimc_pads_cleanup(ved->pads);
	v4l2_device_unregister_subdev(sd);
}
EXPORT_SYMBOL_GPL(vimc_ent_sd_unregister);

Privacy Policy