]>
Commit | Line | Data |
---|---|---|
26e0ca22 LP |
1 | /* |
2 | * vsp1_rpf.c -- R-Car VSP1 Read Pixel Formatter | |
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 | ||
16 | #include <media/v4l2-subdev.h> | |
17 | ||
18 | #include "vsp1.h" | |
19 | #include "vsp1_rwpf.h" | |
20 | #include "vsp1_video.h" | |
21 | ||
22 | #define RPF_MAX_WIDTH 8190 | |
23 | #define RPF_MAX_HEIGHT 8190 | |
24 | ||
25 | /* ----------------------------------------------------------------------------- | |
26 | * Device Access | |
27 | */ | |
28 | ||
29 | static inline u32 vsp1_rpf_read(struct vsp1_rwpf *rpf, u32 reg) | |
30 | { | |
31 | return vsp1_read(rpf->entity.vsp1, | |
32 | reg + rpf->entity.index * VI6_RPF_OFFSET); | |
33 | } | |
34 | ||
35 | static inline void vsp1_rpf_write(struct vsp1_rwpf *rpf, u32 reg, u32 data) | |
36 | { | |
37 | vsp1_write(rpf->entity.vsp1, | |
38 | reg + rpf->entity.index * VI6_RPF_OFFSET, data); | |
39 | } | |
40 | ||
41 | /* ----------------------------------------------------------------------------- | |
42 | * V4L2 Subdevice Core Operations | |
43 | */ | |
44 | ||
45 | static int rpf_s_stream(struct v4l2_subdev *subdev, int enable) | |
46 | { | |
47 | struct vsp1_rwpf *rpf = to_rwpf(subdev); | |
48 | const struct vsp1_format_info *fmtinfo = rpf->video.fmtinfo; | |
49 | const struct v4l2_pix_format_mplane *format = &rpf->video.format; | |
e5ad37b6 | 50 | const struct v4l2_rect *crop = &rpf->crop; |
26e0ca22 LP |
51 | u32 pstride; |
52 | u32 infmt; | |
53 | ||
54 | if (!enable) | |
55 | return 0; | |
56 | ||
e5ad37b6 LP |
57 | /* Source size, stride and crop offsets. |
58 | * | |
59 | * The crop offsets correspond to the location of the crop rectangle top | |
60 | * left corner in the plane buffer. Only two offsets are needed, as | |
61 | * planes 2 and 3 always have identical strides. | |
62 | */ | |
26e0ca22 | 63 | vsp1_rpf_write(rpf, VI6_RPF_SRC_BSIZE, |
e5ad37b6 LP |
64 | (crop->width << VI6_RPF_SRC_BSIZE_BHSIZE_SHIFT) | |
65 | (crop->height << VI6_RPF_SRC_BSIZE_BVSIZE_SHIFT)); | |
26e0ca22 | 66 | vsp1_rpf_write(rpf, VI6_RPF_SRC_ESIZE, |
e5ad37b6 LP |
67 | (crop->width << VI6_RPF_SRC_ESIZE_EHSIZE_SHIFT) | |
68 | (crop->height << VI6_RPF_SRC_ESIZE_EVSIZE_SHIFT)); | |
26e0ca22 | 69 | |
e5ad37b6 LP |
70 | rpf->offsets[0] = crop->top * format->plane_fmt[0].bytesperline |
71 | + crop->left * fmtinfo->bpp[0] / 8; | |
26e0ca22 LP |
72 | pstride = format->plane_fmt[0].bytesperline |
73 | << VI6_RPF_SRCM_PSTRIDE_Y_SHIFT; | |
e5ad37b6 LP |
74 | if (format->num_planes > 1) { |
75 | rpf->offsets[1] = crop->top * format->plane_fmt[1].bytesperline | |
76 | + crop->left * fmtinfo->bpp[1] / 8; | |
26e0ca22 LP |
77 | pstride |= format->plane_fmt[1].bytesperline |
78 | << VI6_RPF_SRCM_PSTRIDE_C_SHIFT; | |
e5ad37b6 | 79 | } |
26e0ca22 LP |
80 | |
81 | vsp1_rpf_write(rpf, VI6_RPF_SRCM_PSTRIDE, pstride); | |
82 | ||
83 | /* Format */ | |
84 | infmt = VI6_RPF_INFMT_CIPM | |
85 | | (fmtinfo->hwfmt << VI6_RPF_INFMT_RDFMT_SHIFT); | |
86 | ||
87 | if (fmtinfo->swap_yc) | |
88 | infmt |= VI6_RPF_INFMT_SPYCS; | |
89 | if (fmtinfo->swap_uv) | |
90 | infmt |= VI6_RPF_INFMT_SPUVS; | |
91 | ||
92 | if (rpf->entity.formats[RWPF_PAD_SINK].code != | |
93 | rpf->entity.formats[RWPF_PAD_SOURCE].code) | |
94 | infmt |= VI6_RPF_INFMT_CSC; | |
95 | ||
96 | vsp1_rpf_write(rpf, VI6_RPF_INFMT, infmt); | |
97 | vsp1_rpf_write(rpf, VI6_RPF_DSWAP, fmtinfo->swap); | |
98 | ||
629bb6d4 LP |
99 | /* Output location */ |
100 | vsp1_rpf_write(rpf, VI6_RPF_LOC, | |
101 | (rpf->location.left << VI6_RPF_LOC_HCOORD_SHIFT) | | |
102 | (rpf->location.top << VI6_RPF_LOC_VCOORD_SHIFT)); | |
26e0ca22 | 103 | |
7a52b6de LP |
104 | /* Use the alpha channel (extended to 8 bits) when available or a |
105 | * hardcoded 255 value otherwise. Disable color keying. | |
26e0ca22 | 106 | */ |
7a52b6de LP |
107 | vsp1_rpf_write(rpf, VI6_RPF_ALPH_SEL, VI6_RPF_ALPH_SEL_AEXT_EXT | |
108 | (fmtinfo->alpha ? VI6_RPF_ALPH_SEL_ASEL_PACKED | |
109 | : VI6_RPF_ALPH_SEL_ASEL_FIXED)); | |
26e0ca22 LP |
110 | vsp1_rpf_write(rpf, VI6_RPF_VRTCOL_SET, |
111 | 255 << VI6_RPF_VRTCOL_SET_LAYA_SHIFT); | |
112 | vsp1_rpf_write(rpf, VI6_RPF_MSK_CTRL, 0); | |
113 | vsp1_rpf_write(rpf, VI6_RPF_CKEY_CTRL, 0); | |
114 | ||
115 | return 0; | |
116 | } | |
117 | ||
118 | /* ----------------------------------------------------------------------------- | |
119 | * V4L2 Subdevice Operations | |
120 | */ | |
121 | ||
122 | static struct v4l2_subdev_video_ops rpf_video_ops = { | |
123 | .s_stream = rpf_s_stream, | |
124 | }; | |
125 | ||
126 | static struct v4l2_subdev_pad_ops rpf_pad_ops = { | |
127 | .enum_mbus_code = vsp1_rwpf_enum_mbus_code, | |
128 | .enum_frame_size = vsp1_rwpf_enum_frame_size, | |
129 | .get_fmt = vsp1_rwpf_get_format, | |
130 | .set_fmt = vsp1_rwpf_set_format, | |
e5ad37b6 LP |
131 | .get_selection = vsp1_rwpf_get_selection, |
132 | .set_selection = vsp1_rwpf_set_selection, | |
26e0ca22 LP |
133 | }; |
134 | ||
135 | static struct v4l2_subdev_ops rpf_ops = { | |
136 | .video = &rpf_video_ops, | |
137 | .pad = &rpf_pad_ops, | |
138 | }; | |
139 | ||
140 | /* ----------------------------------------------------------------------------- | |
141 | * Video Device Operations | |
142 | */ | |
143 | ||
144 | static void rpf_vdev_queue(struct vsp1_video *video, | |
145 | struct vsp1_video_buffer *buf) | |
146 | { | |
147 | struct vsp1_rwpf *rpf = container_of(video, struct vsp1_rwpf, video); | |
148 | ||
e5ad37b6 LP |
149 | vsp1_rpf_write(rpf, VI6_RPF_SRCM_ADDR_Y, |
150 | buf->addr[0] + rpf->offsets[0]); | |
26e0ca22 | 151 | if (buf->buf.num_planes > 1) |
e5ad37b6 LP |
152 | vsp1_rpf_write(rpf, VI6_RPF_SRCM_ADDR_C0, |
153 | buf->addr[1] + rpf->offsets[1]); | |
26e0ca22 | 154 | if (buf->buf.num_planes > 2) |
e5ad37b6 LP |
155 | vsp1_rpf_write(rpf, VI6_RPF_SRCM_ADDR_C1, |
156 | buf->addr[2] + rpf->offsets[1]); | |
26e0ca22 LP |
157 | } |
158 | ||
159 | static const struct vsp1_video_operations rpf_vdev_ops = { | |
160 | .queue = rpf_vdev_queue, | |
161 | }; | |
162 | ||
163 | /* ----------------------------------------------------------------------------- | |
164 | * Initialization and Cleanup | |
165 | */ | |
166 | ||
167 | struct vsp1_rwpf *vsp1_rpf_create(struct vsp1_device *vsp1, unsigned int index) | |
168 | { | |
169 | struct v4l2_subdev *subdev; | |
170 | struct vsp1_video *video; | |
171 | struct vsp1_rwpf *rpf; | |
172 | int ret; | |
173 | ||
174 | rpf = devm_kzalloc(vsp1->dev, sizeof(*rpf), GFP_KERNEL); | |
175 | if (rpf == NULL) | |
176 | return ERR_PTR(-ENOMEM); | |
177 | ||
178 | rpf->max_width = RPF_MAX_WIDTH; | |
179 | rpf->max_height = RPF_MAX_HEIGHT; | |
180 | ||
181 | rpf->entity.type = VSP1_ENTITY_RPF; | |
182 | rpf->entity.index = index; | |
26e0ca22 LP |
183 | |
184 | ret = vsp1_entity_init(vsp1, &rpf->entity, 2); | |
185 | if (ret < 0) | |
186 | return ERR_PTR(ret); | |
187 | ||
188 | /* Initialize the V4L2 subdev. */ | |
189 | subdev = &rpf->entity.subdev; | |
190 | v4l2_subdev_init(subdev, &rpf_ops); | |
191 | ||
192 | subdev->entity.ops = &vsp1_media_ops; | |
193 | subdev->internal_ops = &vsp1_subdev_internal_ops; | |
194 | snprintf(subdev->name, sizeof(subdev->name), "%s rpf.%u", | |
195 | dev_name(vsp1->dev), index); | |
196 | v4l2_set_subdevdata(subdev, rpf); | |
197 | subdev->flags |= V4L2_SUBDEV_FL_HAS_DEVNODE; | |
198 | ||
199 | vsp1_entity_init_formats(subdev, NULL); | |
200 | ||
201 | /* Initialize the video device. */ | |
202 | video = &rpf->video; | |
203 | ||
204 | video->type = V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE; | |
205 | video->vsp1 = vsp1; | |
206 | video->ops = &rpf_vdev_ops; | |
207 | ||
208 | ret = vsp1_video_init(video, &rpf->entity); | |
209 | if (ret < 0) | |
1499be67 LP |
210 | goto error; |
211 | ||
212 | rpf->entity.video = video; | |
26e0ca22 LP |
213 | |
214 | /* Connect the video device to the RPF. */ | |
215 | ret = media_entity_create_link(&rpf->video.video.entity, 0, | |
216 | &rpf->entity.subdev.entity, | |
217 | RWPF_PAD_SINK, | |
218 | MEDIA_LNK_FL_ENABLED | | |
219 | MEDIA_LNK_FL_IMMUTABLE); | |
220 | if (ret < 0) | |
1499be67 | 221 | goto error; |
26e0ca22 LP |
222 | |
223 | return rpf; | |
224 | ||
1499be67 LP |
225 | error: |
226 | vsp1_entity_destroy(&rpf->entity); | |
26e0ca22 LP |
227 | return ERR_PTR(ret); |
228 | } |