1 /*
2 * vsp1_entity.c -- R-Car VSP1 Base Entity
3 *
4 * Copyright (C) 2013-2014 Renesas Electronics Corporation
5 *
6 * Contact: Laurent Pinchart (laurent.pinchart@ideasonboard.com)
7 *
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License as published by
10 * the Free Software Foundation; either version 2 of the License, or
11 * (at your option) any later version.
12 */
13
14 #include <linux/device.h>
15 #include <linux/gfp.h>
16
17 #include <media/media-entity.h>
18 #include <media/v4l2-ctrls.h>
19 #include <media/v4l2-subdev.h>
20
21 #include "vsp1.h"
22 #include "vsp1_entity.h"
23 #include "vsp1_video.h"
24
vsp1_entity_is_streaming(struct vsp1_entity * entity)25 bool vsp1_entity_is_streaming(struct vsp1_entity *entity)
26 {
27 bool streaming;
28
29 mutex_lock(&entity->lock);
30 streaming = entity->streaming;
31 mutex_unlock(&entity->lock);
32
33 return streaming;
34 }
35
vsp1_entity_set_streaming(struct vsp1_entity * entity,bool streaming)36 int vsp1_entity_set_streaming(struct vsp1_entity *entity, bool streaming)
37 {
38 int ret;
39
40 mutex_lock(&entity->lock);
41 entity->streaming = streaming;
42 mutex_unlock(&entity->lock);
43
44 if (!streaming)
45 return 0;
46
47 if (!entity->subdev.ctrl_handler)
48 return 0;
49
50 ret = v4l2_ctrl_handler_setup(entity->subdev.ctrl_handler);
51 if (ret < 0) {
52 mutex_lock(&entity->lock);
53 entity->streaming = false;
54 mutex_unlock(&entity->lock);
55 }
56
57 return ret;
58 }
59
60 /* -----------------------------------------------------------------------------
61 * V4L2 Subdevice Operations
62 */
63
64 struct v4l2_mbus_framefmt *
vsp1_entity_get_pad_format(struct vsp1_entity * entity,struct v4l2_subdev_pad_config * cfg,unsigned int pad,u32 which)65 vsp1_entity_get_pad_format(struct vsp1_entity *entity,
66 struct v4l2_subdev_pad_config *cfg,
67 unsigned int pad, u32 which)
68 {
69 switch (which) {
70 case V4L2_SUBDEV_FORMAT_TRY:
71 return v4l2_subdev_get_try_format(&entity->subdev, cfg, pad);
72 case V4L2_SUBDEV_FORMAT_ACTIVE:
73 return &entity->formats[pad];
74 default:
75 return NULL;
76 }
77 }
78
79 /*
80 * vsp1_entity_init_formats - Initialize formats on all pads
81 * @subdev: V4L2 subdevice
82 * @cfg: V4L2 subdev pad configuration
83 *
84 * Initialize all pad formats with default values. If cfg is not NULL, try
85 * formats are initialized on the file handle. Otherwise active formats are
86 * initialized on the device.
87 */
vsp1_entity_init_formats(struct v4l2_subdev * subdev,struct v4l2_subdev_pad_config * cfg)88 void vsp1_entity_init_formats(struct v4l2_subdev *subdev,
89 struct v4l2_subdev_pad_config *cfg)
90 {
91 struct v4l2_subdev_format format;
92 unsigned int pad;
93
94 for (pad = 0; pad < subdev->entity.num_pads - 1; ++pad) {
95 memset(&format, 0, sizeof(format));
96
97 format.pad = pad;
98 format.which = cfg ? V4L2_SUBDEV_FORMAT_TRY
99 : V4L2_SUBDEV_FORMAT_ACTIVE;
100
101 v4l2_subdev_call(subdev, pad, set_fmt, cfg, &format);
102 }
103 }
104
vsp1_entity_open(struct v4l2_subdev * subdev,struct v4l2_subdev_fh * fh)105 static int vsp1_entity_open(struct v4l2_subdev *subdev,
106 struct v4l2_subdev_fh *fh)
107 {
108 vsp1_entity_init_formats(subdev, fh->pad);
109
110 return 0;
111 }
112
113 const struct v4l2_subdev_internal_ops vsp1_subdev_internal_ops = {
114 .open = vsp1_entity_open,
115 };
116
117 /* -----------------------------------------------------------------------------
118 * Media Operations
119 */
120
vsp1_entity_link_setup(struct media_entity * entity,const struct media_pad * local,const struct media_pad * remote,u32 flags)121 static int vsp1_entity_link_setup(struct media_entity *entity,
122 const struct media_pad *local,
123 const struct media_pad *remote, u32 flags)
124 {
125 struct vsp1_entity *source;
126
127 if (!(local->flags & MEDIA_PAD_FL_SOURCE))
128 return 0;
129
130 source = container_of(local->entity, struct vsp1_entity, subdev.entity);
131
132 if (!source->route)
133 return 0;
134
135 if (flags & MEDIA_LNK_FL_ENABLED) {
136 if (source->sink)
137 return -EBUSY;
138 source->sink = remote->entity;
139 source->sink_pad = remote->index;
140 } else {
141 source->sink = NULL;
142 source->sink_pad = 0;
143 }
144
145 return 0;
146 }
147
148 const struct media_entity_operations vsp1_media_ops = {
149 .link_setup = vsp1_entity_link_setup,
150 .link_validate = v4l2_subdev_link_validate,
151 };
152
153 /* -----------------------------------------------------------------------------
154 * Initialization
155 */
156
157 static const struct vsp1_route vsp1_routes[] = {
158 { VSP1_ENTITY_BRU, 0, VI6_DPR_BRU_ROUTE,
159 { VI6_DPR_NODE_BRU_IN(0), VI6_DPR_NODE_BRU_IN(1),
160 VI6_DPR_NODE_BRU_IN(2), VI6_DPR_NODE_BRU_IN(3), } },
161 { VSP1_ENTITY_HSI, 0, VI6_DPR_HSI_ROUTE, { VI6_DPR_NODE_HSI, } },
162 { VSP1_ENTITY_HST, 0, VI6_DPR_HST_ROUTE, { VI6_DPR_NODE_HST, } },
163 { VSP1_ENTITY_LIF, 0, 0, { VI6_DPR_NODE_LIF, } },
164 { VSP1_ENTITY_LUT, 0, VI6_DPR_LUT_ROUTE, { VI6_DPR_NODE_LUT, } },
165 { VSP1_ENTITY_RPF, 0, VI6_DPR_RPF_ROUTE(0), { VI6_DPR_NODE_RPF(0), } },
166 { VSP1_ENTITY_RPF, 1, VI6_DPR_RPF_ROUTE(1), { VI6_DPR_NODE_RPF(1), } },
167 { VSP1_ENTITY_RPF, 2, VI6_DPR_RPF_ROUTE(2), { VI6_DPR_NODE_RPF(2), } },
168 { VSP1_ENTITY_RPF, 3, VI6_DPR_RPF_ROUTE(3), { VI6_DPR_NODE_RPF(3), } },
169 { VSP1_ENTITY_RPF, 4, VI6_DPR_RPF_ROUTE(4), { VI6_DPR_NODE_RPF(4), } },
170 { VSP1_ENTITY_SRU, 0, VI6_DPR_SRU_ROUTE, { VI6_DPR_NODE_SRU, } },
171 { VSP1_ENTITY_UDS, 0, VI6_DPR_UDS_ROUTE(0), { VI6_DPR_NODE_UDS(0), } },
172 { VSP1_ENTITY_UDS, 1, VI6_DPR_UDS_ROUTE(1), { VI6_DPR_NODE_UDS(1), } },
173 { VSP1_ENTITY_UDS, 2, VI6_DPR_UDS_ROUTE(2), { VI6_DPR_NODE_UDS(2), } },
174 { VSP1_ENTITY_WPF, 0, 0, { VI6_DPR_NODE_WPF(0), } },
175 { VSP1_ENTITY_WPF, 1, 0, { VI6_DPR_NODE_WPF(1), } },
176 { VSP1_ENTITY_WPF, 2, 0, { VI6_DPR_NODE_WPF(2), } },
177 { VSP1_ENTITY_WPF, 3, 0, { VI6_DPR_NODE_WPF(3), } },
178 };
179
vsp1_entity_init(struct vsp1_device * vsp1,struct vsp1_entity * entity,unsigned int num_pads)180 int vsp1_entity_init(struct vsp1_device *vsp1, struct vsp1_entity *entity,
181 unsigned int num_pads)
182 {
183 unsigned int i;
184
185 for (i = 0; i < ARRAY_SIZE(vsp1_routes); ++i) {
186 if (vsp1_routes[i].type == entity->type &&
187 vsp1_routes[i].index == entity->index) {
188 entity->route = &vsp1_routes[i];
189 break;
190 }
191 }
192
193 if (i == ARRAY_SIZE(vsp1_routes))
194 return -EINVAL;
195
196 mutex_init(&entity->lock);
197
198 entity->vsp1 = vsp1;
199 entity->source_pad = num_pads - 1;
200
201 /* Allocate formats and pads. */
202 entity->formats = devm_kzalloc(vsp1->dev,
203 num_pads * sizeof(*entity->formats),
204 GFP_KERNEL);
205 if (entity->formats == NULL)
206 return -ENOMEM;
207
208 entity->pads = devm_kzalloc(vsp1->dev, num_pads * sizeof(*entity->pads),
209 GFP_KERNEL);
210 if (entity->pads == NULL)
211 return -ENOMEM;
212
213 /* Initialize pads. */
214 for (i = 0; i < num_pads - 1; ++i)
215 entity->pads[i].flags = MEDIA_PAD_FL_SINK;
216
217 entity->pads[num_pads - 1].flags = MEDIA_PAD_FL_SOURCE;
218
219 /* Initialize the media entity. */
220 return media_entity_init(&entity->subdev.entity, num_pads,
221 entity->pads, 0);
222 }
223
vsp1_entity_destroy(struct vsp1_entity * entity)224 void vsp1_entity_destroy(struct vsp1_entity *entity)
225 {
226 if (entity->video)
227 vsp1_video_cleanup(entity->video);
228 if (entity->subdev.ctrl_handler)
229 v4l2_ctrl_handler_free(entity->subdev.ctrl_handler);
230 media_entity_cleanup(&entity->subdev.entity);
231
232 mutex_destroy(&entity->lock);
233 }
234