Commit | Line | Data |
---|---|---|
26e0ca22 LP |
1 | /* |
2 | * vsp1_entity.c -- R-Car VSP1 Base Entity | |
3 | * | |
4 | * Copyright (C) 2013 Renesas 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-subdev.h> | |
19 | ||
20 | #include "vsp1.h" | |
21 | #include "vsp1_entity.h" | |
22 | ||
23 | /* ----------------------------------------------------------------------------- | |
24 | * V4L2 Subdevice Operations | |
25 | */ | |
26 | ||
27 | struct v4l2_mbus_framefmt * | |
28 | vsp1_entity_get_pad_format(struct vsp1_entity *entity, | |
29 | struct v4l2_subdev_fh *fh, | |
30 | unsigned int pad, u32 which) | |
31 | { | |
32 | switch (which) { | |
33 | case V4L2_SUBDEV_FORMAT_TRY: | |
34 | return v4l2_subdev_get_try_format(fh, pad); | |
35 | case V4L2_SUBDEV_FORMAT_ACTIVE: | |
36 | return &entity->formats[pad]; | |
37 | default: | |
38 | return NULL; | |
39 | } | |
40 | } | |
41 | ||
42 | /* | |
43 | * vsp1_entity_init_formats - Initialize formats on all pads | |
44 | * @subdev: V4L2 subdevice | |
45 | * @fh: V4L2 subdev file handle | |
46 | * | |
47 | * Initialize all pad formats with default values. If fh is not NULL, try | |
48 | * formats are initialized on the file handle. Otherwise active formats are | |
49 | * initialized on the device. | |
50 | */ | |
51 | void vsp1_entity_init_formats(struct v4l2_subdev *subdev, | |
52 | struct v4l2_subdev_fh *fh) | |
53 | { | |
54 | struct v4l2_subdev_format format; | |
55 | unsigned int pad; | |
56 | ||
57 | for (pad = 0; pad < subdev->entity.num_pads - 1; ++pad) { | |
58 | memset(&format, 0, sizeof(format)); | |
59 | ||
60 | format.pad = pad; | |
61 | format.which = fh ? V4L2_SUBDEV_FORMAT_TRY | |
62 | : V4L2_SUBDEV_FORMAT_ACTIVE; | |
63 | ||
64 | v4l2_subdev_call(subdev, pad, set_fmt, fh, &format); | |
65 | } | |
66 | } | |
67 | ||
68 | static int vsp1_entity_open(struct v4l2_subdev *subdev, | |
69 | struct v4l2_subdev_fh *fh) | |
70 | { | |
71 | vsp1_entity_init_formats(subdev, fh); | |
72 | ||
73 | return 0; | |
74 | } | |
75 | ||
76 | const struct v4l2_subdev_internal_ops vsp1_subdev_internal_ops = { | |
77 | .open = vsp1_entity_open, | |
78 | }; | |
79 | ||
80 | /* ----------------------------------------------------------------------------- | |
81 | * Media Operations | |
82 | */ | |
83 | ||
84 | static int vsp1_entity_link_setup(struct media_entity *entity, | |
85 | const struct media_pad *local, | |
86 | const struct media_pad *remote, u32 flags) | |
87 | { | |
88 | struct vsp1_entity *source; | |
89 | ||
90 | if (!(local->flags & MEDIA_PAD_FL_SOURCE)) | |
91 | return 0; | |
92 | ||
93 | source = container_of(local->entity, struct vsp1_entity, subdev.entity); | |
94 | ||
95 | if (!source->route) | |
96 | return 0; | |
97 | ||
98 | if (flags & MEDIA_LNK_FL_ENABLED) { | |
99 | if (source->sink) | |
100 | return -EBUSY; | |
101 | source->sink = remote->entity; | |
102 | } else { | |
103 | source->sink = NULL; | |
104 | } | |
105 | ||
106 | return 0; | |
107 | } | |
108 | ||
109 | const struct media_entity_operations vsp1_media_ops = { | |
110 | .link_setup = vsp1_entity_link_setup, | |
111 | .link_validate = v4l2_subdev_link_validate, | |
112 | }; | |
113 | ||
114 | /* ----------------------------------------------------------------------------- | |
115 | * Initialization | |
116 | */ | |
117 | ||
118 | int vsp1_entity_init(struct vsp1_device *vsp1, struct vsp1_entity *entity, | |
119 | unsigned int num_pads) | |
120 | { | |
121 | static const struct { | |
122 | unsigned int id; | |
123 | unsigned int reg; | |
124 | } routes[] = { | |
5cdf5741 LP |
125 | { VI6_DPR_NODE_HSI, VI6_DPR_HSI_ROUTE }, |
126 | { VI6_DPR_NODE_HST, VI6_DPR_HST_ROUTE }, | |
26e0ca22 LP |
127 | { VI6_DPR_NODE_LIF, 0 }, |
128 | { VI6_DPR_NODE_RPF(0), VI6_DPR_RPF_ROUTE(0) }, | |
129 | { VI6_DPR_NODE_RPF(1), VI6_DPR_RPF_ROUTE(1) }, | |
130 | { VI6_DPR_NODE_RPF(2), VI6_DPR_RPF_ROUTE(2) }, | |
131 | { VI6_DPR_NODE_RPF(3), VI6_DPR_RPF_ROUTE(3) }, | |
132 | { VI6_DPR_NODE_RPF(4), VI6_DPR_RPF_ROUTE(4) }, | |
133 | { VI6_DPR_NODE_UDS(0), VI6_DPR_UDS_ROUTE(0) }, | |
134 | { VI6_DPR_NODE_UDS(1), VI6_DPR_UDS_ROUTE(1) }, | |
135 | { VI6_DPR_NODE_UDS(2), VI6_DPR_UDS_ROUTE(2) }, | |
136 | { VI6_DPR_NODE_WPF(0), 0 }, | |
137 | { VI6_DPR_NODE_WPF(1), 0 }, | |
138 | { VI6_DPR_NODE_WPF(2), 0 }, | |
139 | { VI6_DPR_NODE_WPF(3), 0 }, | |
140 | }; | |
141 | ||
142 | unsigned int i; | |
143 | ||
144 | for (i = 0; i < ARRAY_SIZE(routes); ++i) { | |
145 | if (routes[i].id == entity->id) { | |
146 | entity->route = routes[i].reg; | |
147 | break; | |
148 | } | |
149 | } | |
150 | ||
151 | if (i == ARRAY_SIZE(routes)) | |
152 | return -EINVAL; | |
153 | ||
154 | entity->vsp1 = vsp1; | |
155 | entity->source_pad = num_pads - 1; | |
156 | ||
157 | /* Allocate formats and pads. */ | |
158 | entity->formats = devm_kzalloc(vsp1->dev, | |
159 | num_pads * sizeof(*entity->formats), | |
160 | GFP_KERNEL); | |
161 | if (entity->formats == NULL) | |
162 | return -ENOMEM; | |
163 | ||
164 | entity->pads = devm_kzalloc(vsp1->dev, num_pads * sizeof(*entity->pads), | |
165 | GFP_KERNEL); | |
166 | if (entity->pads == NULL) | |
167 | return -ENOMEM; | |
168 | ||
169 | /* Initialize pads. */ | |
170 | for (i = 0; i < num_pads - 1; ++i) | |
171 | entity->pads[i].flags = MEDIA_PAD_FL_SINK; | |
172 | ||
173 | entity->pads[num_pads - 1].flags = MEDIA_PAD_FL_SOURCE; | |
174 | ||
175 | /* Initialize the media entity. */ | |
176 | return media_entity_init(&entity->subdev.entity, num_pads, | |
177 | entity->pads, 0); | |
178 | } | |
179 | ||
180 | void vsp1_entity_destroy(struct vsp1_entity *entity) | |
181 | { | |
182 | media_entity_cleanup(&entity->subdev.entity); | |
183 | } |