Commit | Line | Data |
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26e0ca22 LP |
1 | /* |
2 | * vsp1_entity.c -- R-Car VSP1 Base Entity | |
3 | * | |
8a1edc55 | 4 | * Copyright (C) 2013-2014 Renesas Electronics Corporation |
26e0ca22 LP |
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> | |
a626e64e | 18 | #include <media/v4l2-ctrls.h> |
26e0ca22 LP |
19 | #include <media/v4l2-subdev.h> |
20 | ||
21 | #include "vsp1.h" | |
22 | #include "vsp1_entity.h" | |
23 | ||
960de2cf LP |
24 | bool vsp1_entity_is_streaming(struct vsp1_entity *entity) |
25 | { | |
adb8963f | 26 | unsigned long flags; |
960de2cf LP |
27 | bool streaming; |
28 | ||
adb8963f | 29 | spin_lock_irqsave(&entity->lock, flags); |
960de2cf | 30 | streaming = entity->streaming; |
adb8963f | 31 | spin_unlock_irqrestore(&entity->lock, flags); |
960de2cf LP |
32 | |
33 | return streaming; | |
34 | } | |
35 | ||
36 | int vsp1_entity_set_streaming(struct vsp1_entity *entity, bool streaming) | |
37 | { | |
adb8963f | 38 | unsigned long flags; |
960de2cf LP |
39 | int ret; |
40 | ||
adb8963f | 41 | spin_lock_irqsave(&entity->lock, flags); |
960de2cf | 42 | entity->streaming = streaming; |
adb8963f | 43 | spin_unlock_irqrestore(&entity->lock, flags); |
960de2cf LP |
44 | |
45 | if (!streaming) | |
46 | return 0; | |
47 | ||
48 | if (!entity->subdev.ctrl_handler) | |
49 | return 0; | |
50 | ||
51 | ret = v4l2_ctrl_handler_setup(entity->subdev.ctrl_handler); | |
52 | if (ret < 0) { | |
adb8963f | 53 | spin_lock_irqsave(&entity->lock, flags); |
960de2cf | 54 | entity->streaming = false; |
adb8963f | 55 | spin_unlock_irqrestore(&entity->lock, flags); |
960de2cf LP |
56 | } |
57 | ||
58 | return ret; | |
59 | } | |
60 | ||
26e0ca22 LP |
61 | /* ----------------------------------------------------------------------------- |
62 | * V4L2 Subdevice Operations | |
63 | */ | |
64 | ||
65 | struct v4l2_mbus_framefmt * | |
66 | vsp1_entity_get_pad_format(struct vsp1_entity *entity, | |
f7234138 | 67 | struct v4l2_subdev_pad_config *cfg, |
26e0ca22 LP |
68 | unsigned int pad, u32 which) |
69 | { | |
70 | switch (which) { | |
71 | case V4L2_SUBDEV_FORMAT_TRY: | |
f7234138 | 72 | return v4l2_subdev_get_try_format(&entity->subdev, cfg, pad); |
26e0ca22 LP |
73 | case V4L2_SUBDEV_FORMAT_ACTIVE: |
74 | return &entity->formats[pad]; | |
75 | default: | |
76 | return NULL; | |
77 | } | |
78 | } | |
79 | ||
80 | /* | |
81 | * vsp1_entity_init_formats - Initialize formats on all pads | |
82 | * @subdev: V4L2 subdevice | |
f7234138 | 83 | * @cfg: V4L2 subdev pad configuration |
26e0ca22 | 84 | * |
f7234138 | 85 | * Initialize all pad formats with default values. If cfg is not NULL, try |
26e0ca22 LP |
86 | * formats are initialized on the file handle. Otherwise active formats are |
87 | * initialized on the device. | |
88 | */ | |
89 | void vsp1_entity_init_formats(struct v4l2_subdev *subdev, | |
f7234138 | 90 | struct v4l2_subdev_pad_config *cfg) |
26e0ca22 LP |
91 | { |
92 | struct v4l2_subdev_format format; | |
93 | unsigned int pad; | |
94 | ||
95 | for (pad = 0; pad < subdev->entity.num_pads - 1; ++pad) { | |
96 | memset(&format, 0, sizeof(format)); | |
97 | ||
98 | format.pad = pad; | |
f7234138 | 99 | format.which = cfg ? V4L2_SUBDEV_FORMAT_TRY |
26e0ca22 LP |
100 | : V4L2_SUBDEV_FORMAT_ACTIVE; |
101 | ||
f7234138 | 102 | v4l2_subdev_call(subdev, pad, set_fmt, cfg, &format); |
26e0ca22 LP |
103 | } |
104 | } | |
105 | ||
106 | static int vsp1_entity_open(struct v4l2_subdev *subdev, | |
107 | struct v4l2_subdev_fh *fh) | |
108 | { | |
f7234138 | 109 | vsp1_entity_init_formats(subdev, fh->pad); |
26e0ca22 LP |
110 | |
111 | return 0; | |
112 | } | |
113 | ||
114 | const struct v4l2_subdev_internal_ops vsp1_subdev_internal_ops = { | |
115 | .open = vsp1_entity_open, | |
116 | }; | |
117 | ||
118 | /* ----------------------------------------------------------------------------- | |
119 | * Media Operations | |
120 | */ | |
121 | ||
122 | static int vsp1_entity_link_setup(struct media_entity *entity, | |
123 | const struct media_pad *local, | |
124 | const struct media_pad *remote, u32 flags) | |
125 | { | |
126 | struct vsp1_entity *source; | |
127 | ||
128 | if (!(local->flags & MEDIA_PAD_FL_SOURCE)) | |
129 | return 0; | |
130 | ||
131 | source = container_of(local->entity, struct vsp1_entity, subdev.entity); | |
132 | ||
133 | if (!source->route) | |
134 | return 0; | |
135 | ||
136 | if (flags & MEDIA_LNK_FL_ENABLED) { | |
137 | if (source->sink) | |
138 | return -EBUSY; | |
139 | source->sink = remote->entity; | |
d9b45ed3 | 140 | source->sink_pad = remote->index; |
26e0ca22 LP |
141 | } else { |
142 | source->sink = NULL; | |
d9b45ed3 | 143 | source->sink_pad = 0; |
26e0ca22 LP |
144 | } |
145 | ||
146 | return 0; | |
147 | } | |
148 | ||
149 | const struct media_entity_operations vsp1_media_ops = { | |
150 | .link_setup = vsp1_entity_link_setup, | |
151 | .link_validate = v4l2_subdev_link_validate, | |
152 | }; | |
153 | ||
154 | /* ----------------------------------------------------------------------------- | |
155 | * Initialization | |
156 | */ | |
157 | ||
d9b45ed3 | 158 | static const struct vsp1_route vsp1_routes[] = { |
629bb6d4 LP |
159 | { VSP1_ENTITY_BRU, 0, VI6_DPR_BRU_ROUTE, |
160 | { VI6_DPR_NODE_BRU_IN(0), VI6_DPR_NODE_BRU_IN(1), | |
161 | VI6_DPR_NODE_BRU_IN(2), VI6_DPR_NODE_BRU_IN(3), } }, | |
d9b45ed3 LP |
162 | { VSP1_ENTITY_HSI, 0, VI6_DPR_HSI_ROUTE, { VI6_DPR_NODE_HSI, } }, |
163 | { VSP1_ENTITY_HST, 0, VI6_DPR_HST_ROUTE, { VI6_DPR_NODE_HST, } }, | |
164 | { VSP1_ENTITY_LIF, 0, 0, { VI6_DPR_NODE_LIF, } }, | |
165 | { VSP1_ENTITY_LUT, 0, VI6_DPR_LUT_ROUTE, { VI6_DPR_NODE_LUT, } }, | |
166 | { VSP1_ENTITY_RPF, 0, VI6_DPR_RPF_ROUTE(0), { VI6_DPR_NODE_RPF(0), } }, | |
167 | { VSP1_ENTITY_RPF, 1, VI6_DPR_RPF_ROUTE(1), { VI6_DPR_NODE_RPF(1), } }, | |
168 | { VSP1_ENTITY_RPF, 2, VI6_DPR_RPF_ROUTE(2), { VI6_DPR_NODE_RPF(2), } }, | |
169 | { VSP1_ENTITY_RPF, 3, VI6_DPR_RPF_ROUTE(3), { VI6_DPR_NODE_RPF(3), } }, | |
170 | { VSP1_ENTITY_RPF, 4, VI6_DPR_RPF_ROUTE(4), { VI6_DPR_NODE_RPF(4), } }, | |
171 | { VSP1_ENTITY_SRU, 0, VI6_DPR_SRU_ROUTE, { VI6_DPR_NODE_SRU, } }, | |
172 | { VSP1_ENTITY_UDS, 0, VI6_DPR_UDS_ROUTE(0), { VI6_DPR_NODE_UDS(0), } }, | |
173 | { VSP1_ENTITY_UDS, 1, VI6_DPR_UDS_ROUTE(1), { VI6_DPR_NODE_UDS(1), } }, | |
174 | { VSP1_ENTITY_UDS, 2, VI6_DPR_UDS_ROUTE(2), { VI6_DPR_NODE_UDS(2), } }, | |
175 | { VSP1_ENTITY_WPF, 0, 0, { VI6_DPR_NODE_WPF(0), } }, | |
176 | { VSP1_ENTITY_WPF, 1, 0, { VI6_DPR_NODE_WPF(1), } }, | |
177 | { VSP1_ENTITY_WPF, 2, 0, { VI6_DPR_NODE_WPF(2), } }, | |
178 | { VSP1_ENTITY_WPF, 3, 0, { VI6_DPR_NODE_WPF(3), } }, | |
179 | }; | |
180 | ||
26e0ca22 LP |
181 | int vsp1_entity_init(struct vsp1_device *vsp1, struct vsp1_entity *entity, |
182 | unsigned int num_pads) | |
183 | { | |
26e0ca22 LP |
184 | unsigned int i; |
185 | ||
d9b45ed3 LP |
186 | for (i = 0; i < ARRAY_SIZE(vsp1_routes); ++i) { |
187 | if (vsp1_routes[i].type == entity->type && | |
188 | vsp1_routes[i].index == entity->index) { | |
189 | entity->route = &vsp1_routes[i]; | |
26e0ca22 LP |
190 | break; |
191 | } | |
192 | } | |
193 | ||
d9b45ed3 | 194 | if (i == ARRAY_SIZE(vsp1_routes)) |
26e0ca22 LP |
195 | return -EINVAL; |
196 | ||
adb8963f | 197 | spin_lock_init(&entity->lock); |
960de2cf | 198 | |
26e0ca22 LP |
199 | entity->vsp1 = vsp1; |
200 | entity->source_pad = num_pads - 1; | |
201 | ||
202 | /* Allocate formats and pads. */ | |
203 | entity->formats = devm_kzalloc(vsp1->dev, | |
204 | num_pads * sizeof(*entity->formats), | |
205 | GFP_KERNEL); | |
206 | if (entity->formats == NULL) | |
207 | return -ENOMEM; | |
208 | ||
209 | entity->pads = devm_kzalloc(vsp1->dev, num_pads * sizeof(*entity->pads), | |
210 | GFP_KERNEL); | |
211 | if (entity->pads == NULL) | |
212 | return -ENOMEM; | |
213 | ||
214 | /* Initialize pads. */ | |
215 | for (i = 0; i < num_pads - 1; ++i) | |
216 | entity->pads[i].flags = MEDIA_PAD_FL_SINK; | |
217 | ||
218 | entity->pads[num_pads - 1].flags = MEDIA_PAD_FL_SOURCE; | |
219 | ||
220 | /* Initialize the media entity. */ | |
ab22e77c | 221 | return media_entity_pads_init(&entity->subdev.entity, num_pads, |
18095107 | 222 | entity->pads); |
26e0ca22 LP |
223 | } |
224 | ||
225 | void vsp1_entity_destroy(struct vsp1_entity *entity) | |
226 | { | |
a626e64e LP |
227 | if (entity->subdev.ctrl_handler) |
228 | v4l2_ctrl_handler_free(entity->subdev.ctrl_handler); | |
26e0ca22 LP |
229 | media_entity_cleanup(&entity->subdev.entity); |
230 | } |