2 * vsp1_entity.c -- R-Car VSP1 Base Entity
4 * Copyright (C) 2013-2014 Renesas Electronics Corporation
6 * Contact: Laurent Pinchart (laurent.pinchart@ideasonboard.com)
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License as published by
10 * the Free Software Foundation; either version 2 of the License, or
11 * (at your option) any later version.
14 #include <linux/device.h>
15 #include <linux/gfp.h>
17 #include <media/media-entity.h>
18 #include <media/v4l2-ctrls.h>
19 #include <media/v4l2-subdev.h>
23 #include "vsp1_entity.h"
25 void vsp1_entity_route_setup(struct vsp1_entity *source,
26 struct vsp1_dl_list *dl)
28 struct vsp1_entity *sink;
30 if (source->route->reg == 0)
33 sink = container_of(source->sink, struct vsp1_entity, subdev.entity);
34 vsp1_dl_list_write(dl, source->route->reg,
35 sink->route->inputs[source->sink_pad]);
38 /* -----------------------------------------------------------------------------
39 * V4L2 Subdevice Operations
43 * vsp1_entity_get_pad_config - Get the pad configuration for an entity
45 * @cfg: the TRY pad configuration
46 * @which: configuration selector (ACTIVE or TRY)
48 * Return the pad configuration requested by the which argument. The TRY
49 * configuration is passed explicitly to the function through the cfg argument
50 * and simply returned when requested. The ACTIVE configuration comes from the
53 struct v4l2_subdev_pad_config *
54 vsp1_entity_get_pad_config(struct vsp1_entity *entity,
55 struct v4l2_subdev_pad_config *cfg,
56 enum v4l2_subdev_format_whence which)
59 case V4L2_SUBDEV_FORMAT_ACTIVE:
60 return entity->config;
61 case V4L2_SUBDEV_FORMAT_TRY:
68 * vsp1_entity_get_pad_format - Get a pad format from storage for an entity
70 * @cfg: the configuration storage
71 * @pad: the pad number
73 * Return the format stored in the given configuration for an entity's pad. The
74 * configuration can be an ACTIVE or TRY configuration.
76 struct v4l2_mbus_framefmt *
77 vsp1_entity_get_pad_format(struct vsp1_entity *entity,
78 struct v4l2_subdev_pad_config *cfg,
81 return v4l2_subdev_get_try_format(&entity->subdev, cfg, pad);
85 vsp1_entity_get_pad_compose(struct vsp1_entity *entity,
86 struct v4l2_subdev_pad_config *cfg,
89 return v4l2_subdev_get_try_compose(&entity->subdev, cfg, pad);
93 * vsp1_entity_init_cfg - Initialize formats on all pads
94 * @subdev: V4L2 subdevice
95 * @cfg: V4L2 subdev pad configuration
97 * Initialize all pad formats with default values in the given pad config. This
98 * function can be used as a handler for the subdev pad::init_cfg operation.
100 int vsp1_entity_init_cfg(struct v4l2_subdev *subdev,
101 struct v4l2_subdev_pad_config *cfg)
103 struct v4l2_subdev_format format;
106 for (pad = 0; pad < subdev->entity.num_pads - 1; ++pad) {
107 memset(&format, 0, sizeof(format));
110 format.which = cfg ? V4L2_SUBDEV_FORMAT_TRY
111 : V4L2_SUBDEV_FORMAT_ACTIVE;
113 v4l2_subdev_call(subdev, pad, set_fmt, cfg, &format);
120 * vsp1_subdev_get_pad_format - Subdev pad get_fmt handler
121 * @subdev: V4L2 subdevice
122 * @cfg: V4L2 subdev pad configuration
123 * @fmt: V4L2 subdev format
125 * This function implements the subdev get_fmt pad operation. It can be used as
126 * a direct drop-in for the operation handler.
128 int vsp1_subdev_get_pad_format(struct v4l2_subdev *subdev,
129 struct v4l2_subdev_pad_config *cfg,
130 struct v4l2_subdev_format *fmt)
132 struct vsp1_entity *entity = to_vsp1_entity(subdev);
133 struct v4l2_subdev_pad_config *config;
135 config = vsp1_entity_get_pad_config(entity, cfg, fmt->which);
139 fmt->format = *vsp1_entity_get_pad_format(entity, config, fmt->pad);
145 * vsp1_subdev_enum_mbus_code - Subdev pad enum_mbus_code handler
146 * @subdev: V4L2 subdevice
147 * @cfg: V4L2 subdev pad configuration
148 * @code: Media bus code enumeration
149 * @codes: Array of supported media bus codes
150 * @ncodes: Number of supported media bus codes
152 * This function implements the subdev enum_mbus_code pad operation for entities
153 * that do not support format conversion. It enumerates the given supported
154 * media bus codes on the sink pad and reports a source pad format identical to
157 int vsp1_subdev_enum_mbus_code(struct v4l2_subdev *subdev,
158 struct v4l2_subdev_pad_config *cfg,
159 struct v4l2_subdev_mbus_code_enum *code,
160 const unsigned int *codes, unsigned int ncodes)
162 struct vsp1_entity *entity = to_vsp1_entity(subdev);
164 if (code->pad == 0) {
165 if (code->index >= ncodes)
168 code->code = codes[code->index];
170 struct v4l2_subdev_pad_config *config;
171 struct v4l2_mbus_framefmt *format;
173 /* The entity can't perform format conversion, the sink format
174 * is always identical to the source format.
179 config = vsp1_entity_get_pad_config(entity, cfg, code->which);
183 format = vsp1_entity_get_pad_format(entity, config, 0);
184 code->code = format->code;
191 * vsp1_subdev_enum_frame_size - Subdev pad enum_frame_size handler
192 * @subdev: V4L2 subdevice
193 * @cfg: V4L2 subdev pad configuration
194 * @fse: Frame size enumeration
195 * @min_width: Minimum image width
196 * @min_height: Minimum image height
197 * @max_width: Maximum image width
198 * @max_height: Maximum image height
200 * This function implements the subdev enum_frame_size pad operation for
201 * entities that do not support scaling or cropping. It reports the given
202 * minimum and maximum frame width and height on the sink pad, and a fixed
203 * source pad size identical to the sink pad.
205 int vsp1_subdev_enum_frame_size(struct v4l2_subdev *subdev,
206 struct v4l2_subdev_pad_config *cfg,
207 struct v4l2_subdev_frame_size_enum *fse,
208 unsigned int min_width, unsigned int min_height,
209 unsigned int max_width, unsigned int max_height)
211 struct vsp1_entity *entity = to_vsp1_entity(subdev);
212 struct v4l2_subdev_pad_config *config;
213 struct v4l2_mbus_framefmt *format;
215 config = vsp1_entity_get_pad_config(entity, cfg, fse->which);
219 format = vsp1_entity_get_pad_format(entity, config, fse->pad);
221 if (fse->index || fse->code != format->code)
225 fse->min_width = min_width;
226 fse->max_width = max_width;
227 fse->min_height = min_height;
228 fse->max_height = max_height;
230 /* The size on the source pad are fixed and always identical to
231 * the size on the sink pad.
233 fse->min_width = format->width;
234 fse->max_width = format->width;
235 fse->min_height = format->height;
236 fse->max_height = format->height;
242 /* -----------------------------------------------------------------------------
246 int vsp1_entity_link_setup(struct media_entity *entity,
247 const struct media_pad *local,
248 const struct media_pad *remote, u32 flags)
250 struct vsp1_entity *source;
252 if (!(local->flags & MEDIA_PAD_FL_SOURCE))
255 source = container_of(local->entity, struct vsp1_entity, subdev.entity);
260 if (flags & MEDIA_LNK_FL_ENABLED) {
263 source->sink = remote->entity;
264 source->sink_pad = remote->index;
267 source->sink_pad = 0;
273 /* -----------------------------------------------------------------------------
277 static const struct vsp1_route vsp1_routes[] = {
278 { VSP1_ENTITY_BRU, 0, VI6_DPR_BRU_ROUTE,
279 { VI6_DPR_NODE_BRU_IN(0), VI6_DPR_NODE_BRU_IN(1),
280 VI6_DPR_NODE_BRU_IN(2), VI6_DPR_NODE_BRU_IN(3),
281 VI6_DPR_NODE_BRU_IN(4) } },
282 { VSP1_ENTITY_HSI, 0, VI6_DPR_HSI_ROUTE, { VI6_DPR_NODE_HSI, } },
283 { VSP1_ENTITY_HST, 0, VI6_DPR_HST_ROUTE, { VI6_DPR_NODE_HST, } },
284 { VSP1_ENTITY_LIF, 0, 0, { VI6_DPR_NODE_LIF, } },
285 { VSP1_ENTITY_LUT, 0, VI6_DPR_LUT_ROUTE, { VI6_DPR_NODE_LUT, } },
286 { VSP1_ENTITY_RPF, 0, VI6_DPR_RPF_ROUTE(0), { 0, } },
287 { VSP1_ENTITY_RPF, 1, VI6_DPR_RPF_ROUTE(1), { 0, } },
288 { VSP1_ENTITY_RPF, 2, VI6_DPR_RPF_ROUTE(2), { 0, } },
289 { VSP1_ENTITY_RPF, 3, VI6_DPR_RPF_ROUTE(3), { 0, } },
290 { VSP1_ENTITY_RPF, 4, VI6_DPR_RPF_ROUTE(4), { 0, } },
291 { VSP1_ENTITY_SRU, 0, VI6_DPR_SRU_ROUTE, { VI6_DPR_NODE_SRU, } },
292 { VSP1_ENTITY_UDS, 0, VI6_DPR_UDS_ROUTE(0), { VI6_DPR_NODE_UDS(0), } },
293 { VSP1_ENTITY_UDS, 1, VI6_DPR_UDS_ROUTE(1), { VI6_DPR_NODE_UDS(1), } },
294 { VSP1_ENTITY_UDS, 2, VI6_DPR_UDS_ROUTE(2), { VI6_DPR_NODE_UDS(2), } },
295 { VSP1_ENTITY_WPF, 0, 0, { VI6_DPR_NODE_WPF(0), } },
296 { VSP1_ENTITY_WPF, 1, 0, { VI6_DPR_NODE_WPF(1), } },
297 { VSP1_ENTITY_WPF, 2, 0, { VI6_DPR_NODE_WPF(2), } },
298 { VSP1_ENTITY_WPF, 3, 0, { VI6_DPR_NODE_WPF(3), } },
301 int vsp1_entity_init(struct vsp1_device *vsp1, struct vsp1_entity *entity,
302 const char *name, unsigned int num_pads,
303 const struct v4l2_subdev_ops *ops)
305 struct v4l2_subdev *subdev;
309 for (i = 0; i < ARRAY_SIZE(vsp1_routes); ++i) {
310 if (vsp1_routes[i].type == entity->type &&
311 vsp1_routes[i].index == entity->index) {
312 entity->route = &vsp1_routes[i];
317 if (i == ARRAY_SIZE(vsp1_routes))
321 entity->source_pad = num_pads - 1;
323 /* Allocate and initialize pads. */
324 entity->pads = devm_kzalloc(vsp1->dev, num_pads * sizeof(*entity->pads),
326 if (entity->pads == NULL)
329 for (i = 0; i < num_pads - 1; ++i)
330 entity->pads[i].flags = MEDIA_PAD_FL_SINK;
332 entity->pads[num_pads - 1].flags = MEDIA_PAD_FL_SOURCE;
334 /* Initialize the media entity. */
335 ret = media_entity_pads_init(&entity->subdev.entity, num_pads,
340 /* Initialize the V4L2 subdev. */
341 subdev = &entity->subdev;
342 v4l2_subdev_init(subdev, ops);
344 subdev->entity.ops = &vsp1->media_ops;
345 subdev->flags |= V4L2_SUBDEV_FL_HAS_DEVNODE;
347 snprintf(subdev->name, sizeof(subdev->name), "%s %s",
348 dev_name(vsp1->dev), name);
350 vsp1_entity_init_cfg(subdev, NULL);
352 /* Allocate the pad configuration to store formats and selection
355 entity->config = v4l2_subdev_alloc_pad_config(&entity->subdev);
356 if (entity->config == NULL) {
357 media_entity_cleanup(&entity->subdev.entity);
364 void vsp1_entity_destroy(struct vsp1_entity *entity)
366 if (entity->ops && entity->ops->destroy)
367 entity->ops->destroy(entity);
368 if (entity->subdev.ctrl_handler)
369 v4l2_ctrl_handler_free(entity->subdev.ctrl_handler);
370 v4l2_subdev_free_pad_config(entity->config);
371 media_entity_cleanup(&entity->subdev.entity);