aboutsummaryrefslogtreecommitdiffstats
path: root/drivers/media/video/s5p-tv/mixer_vp_layer.c
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/media/video/s5p-tv/mixer_vp_layer.c')
-rw-r--r--drivers/media/video/s5p-tv/mixer_vp_layer.c211
1 files changed, 211 insertions, 0 deletions
diff --git a/drivers/media/video/s5p-tv/mixer_vp_layer.c b/drivers/media/video/s5p-tv/mixer_vp_layer.c
new file mode 100644
index 00000000000..6950ed8ac1a
--- /dev/null
+++ b/drivers/media/video/s5p-tv/mixer_vp_layer.c
@@ -0,0 +1,211 @@
1/*
2 * Samsung TV Mixer driver
3 *
4 * Copyright (c) 2010-2011 Samsung Electronics Co., Ltd.
5 *
6 * Tomasz Stanislawski, <t.stanislaws@samsung.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
10 * by the Free Software Foundiation. either version 2 of the License,
11 * or (at your option) any later version
12 */
13
14#include "mixer.h"
15
16#include "regs-vp.h"
17
18#include <media/videobuf2-dma-contig.h>
19
20/* FORMAT DEFINITIONS */
21static const struct mxr_format mxr_fmt_nv12 = {
22 .name = "NV12",
23 .fourcc = V4L2_PIX_FMT_NV12,
24 .colorspace = V4L2_COLORSPACE_JPEG,
25 .num_planes = 2,
26 .plane = {
27 { .width = 1, .height = 1, .size = 1 },
28 { .width = 2, .height = 2, .size = 2 },
29 },
30 .num_subframes = 1,
31 .cookie = VP_MODE_NV12 | VP_MODE_MEM_LINEAR,
32};
33
34static const struct mxr_format mxr_fmt_nv21 = {
35 .name = "NV21",
36 .fourcc = V4L2_PIX_FMT_NV21,
37 .colorspace = V4L2_COLORSPACE_JPEG,
38 .num_planes = 2,
39 .plane = {
40 { .width = 1, .height = 1, .size = 1 },
41 { .width = 2, .height = 2, .size = 2 },
42 },
43 .num_subframes = 1,
44 .cookie = VP_MODE_NV21 | VP_MODE_MEM_LINEAR,
45};
46
47static const struct mxr_format mxr_fmt_nv12m = {
48 .name = "NV12 (mplane)",
49 .fourcc = V4L2_PIX_FMT_NV12M,
50 .colorspace = V4L2_COLORSPACE_JPEG,
51 .num_planes = 2,
52 .plane = {
53 { .width = 1, .height = 1, .size = 1 },
54 { .width = 2, .height = 2, .size = 2 },
55 },
56 .num_subframes = 2,
57 .plane2subframe = {0, 1},
58 .cookie = VP_MODE_NV12 | VP_MODE_MEM_LINEAR,
59};
60
61static const struct mxr_format mxr_fmt_nv12mt = {
62 .name = "NV12 tiled (mplane)",
63 .fourcc = V4L2_PIX_FMT_NV12MT,
64 .colorspace = V4L2_COLORSPACE_JPEG,
65 .num_planes = 2,
66 .plane = {
67 { .width = 128, .height = 32, .size = 4096 },
68 { .width = 128, .height = 32, .size = 2048 },
69 },
70 .num_subframes = 2,
71 .plane2subframe = {0, 1},
72 .cookie = VP_MODE_NV12 | VP_MODE_MEM_TILED,
73};
74
75static const struct mxr_format *mxr_video_format[] = {
76 &mxr_fmt_nv12,
77 &mxr_fmt_nv21,
78 &mxr_fmt_nv12m,
79 &mxr_fmt_nv12mt,
80};
81
82/* AUXILIARY CALLBACKS */
83
84static void mxr_vp_layer_release(struct mxr_layer *layer)
85{
86 mxr_base_layer_unregister(layer);
87 mxr_base_layer_release(layer);
88}
89
90static void mxr_vp_buffer_set(struct mxr_layer *layer,
91 struct mxr_buffer *buf)
92{
93 dma_addr_t luma_addr[2] = {0, 0};
94 dma_addr_t chroma_addr[2] = {0, 0};
95
96 if (buf == NULL) {
97 mxr_reg_vp_buffer(layer->mdev, luma_addr, chroma_addr);
98 return;
99 }
100 luma_addr[0] = vb2_dma_contig_plane_paddr(&buf->vb, 0);
101 if (layer->fmt->num_subframes == 2) {
102 chroma_addr[0] = vb2_dma_contig_plane_paddr(&buf->vb, 1);
103 } else {
104 /* FIXME: mxr_get_plane_size compute integer division,
105 * which is slow and should not be performed in interrupt */
106 chroma_addr[0] = luma_addr[0] + mxr_get_plane_size(
107 &layer->fmt->plane[0], layer->geo.src.full_width,
108 layer->geo.src.full_height);
109 }
110 if (layer->fmt->cookie & VP_MODE_MEM_TILED) {
111 luma_addr[1] = luma_addr[0] + 0x40;
112 chroma_addr[1] = chroma_addr[0] + 0x40;
113 } else {
114 luma_addr[1] = luma_addr[0] + layer->geo.src.full_width;
115 chroma_addr[1] = chroma_addr[0];
116 }
117 mxr_reg_vp_buffer(layer->mdev, luma_addr, chroma_addr);
118}
119
120static void mxr_vp_stream_set(struct mxr_layer *layer, int en)
121{
122 mxr_reg_vp_layer_stream(layer->mdev, en);
123}
124
125static void mxr_vp_format_set(struct mxr_layer *layer)
126{
127 mxr_reg_vp_format(layer->mdev, layer->fmt, &layer->geo);
128}
129
130static void mxr_vp_fix_geometry(struct mxr_layer *layer)
131{
132 struct mxr_geometry *geo = &layer->geo;
133
134 /* align horizontal size to 8 pixels */
135 geo->src.full_width = ALIGN(geo->src.full_width, 8);
136 /* limit to boundary size */
137 geo->src.full_width = clamp_val(geo->src.full_width, 8, 8192);
138 geo->src.full_height = clamp_val(geo->src.full_height, 1, 8192);
139 geo->src.width = clamp_val(geo->src.width, 32, geo->src.full_width);
140 geo->src.width = min(geo->src.width, 2047U);
141 geo->src.height = clamp_val(geo->src.height, 4, geo->src.full_height);
142 geo->src.height = min(geo->src.height, 2047U);
143
144 /* setting size of output window */
145 geo->dst.width = clamp_val(geo->dst.width, 8, geo->dst.full_width);
146 geo->dst.height = clamp_val(geo->dst.height, 1, geo->dst.full_height);
147
148 /* ensure that scaling is in range 1/4x to 16x */
149 if (geo->src.width >= 4 * geo->dst.width)
150 geo->src.width = 4 * geo->dst.width;
151 if (geo->dst.width >= 16 * geo->src.width)
152 geo->dst.width = 16 * geo->src.width;
153 if (geo->src.height >= 4 * geo->dst.height)
154 geo->src.height = 4 * geo->dst.height;
155 if (geo->dst.height >= 16 * geo->src.height)
156 geo->dst.height = 16 * geo->src.height;
157
158 /* setting scaling ratio */
159 geo->x_ratio = (geo->src.width << 16) / geo->dst.width;
160 geo->y_ratio = (geo->src.height << 16) / geo->dst.height;
161
162 /* adjust offsets */
163 geo->src.x_offset = min(geo->src.x_offset,
164 geo->src.full_width - geo->src.width);
165 geo->src.y_offset = min(geo->src.y_offset,
166 geo->src.full_height - geo->src.height);
167 geo->dst.x_offset = min(geo->dst.x_offset,
168 geo->dst.full_width - geo->dst.width);
169 geo->dst.y_offset = min(geo->dst.y_offset,
170 geo->dst.full_height - geo->dst.height);
171}
172
173/* PUBLIC API */
174
175struct mxr_layer *mxr_vp_layer_create(struct mxr_device *mdev, int idx)
176{
177 struct mxr_layer *layer;
178 int ret;
179 struct mxr_layer_ops ops = {
180 .release = mxr_vp_layer_release,
181 .buffer_set = mxr_vp_buffer_set,
182 .stream_set = mxr_vp_stream_set,
183 .format_set = mxr_vp_format_set,
184 .fix_geometry = mxr_vp_fix_geometry,
185 };
186 char name[32];
187
188 sprintf(name, "video%d", idx);
189
190 layer = mxr_base_layer_create(mdev, idx, name, &ops);
191 if (layer == NULL) {
192 mxr_err(mdev, "failed to initialize layer(%d) base\n", idx);
193 goto fail;
194 }
195
196 layer->fmt_array = mxr_video_format;
197 layer->fmt_array_size = ARRAY_SIZE(mxr_video_format);
198
199 ret = mxr_base_layer_register(layer);
200 if (ret)
201 goto fail_layer;
202
203 return layer;
204
205fail_layer:
206 mxr_base_layer_release(layer);
207
208fail:
209 return NULL;
210}
211
generated by cgit v1.2.2 (git 2.25.0) at 2025-03-22 05:22:47 -0400