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/*
* Samsung TV Mixer driver
*
* Copyright (c) 2010-2011 Samsung Electronics Co., Ltd.
*
* Tomasz Stanislawski, <t.stanislaws@samsung.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published
* by the Free Software Foundiation. either version 2 of the License,
* or (at your option) any later version
*/
#include "mixer.h"
#include <media/videobuf2-dma-contig.h>
/* FORMAT DEFINITIONS */
static const struct mxr_format mxr_fb_fmt_rgb565 = {
.name = "RGB565",
.fourcc = V4L2_PIX_FMT_RGB565,
.colorspace = V4L2_COLORSPACE_SRGB,
.num_planes = 1,
.plane = {
{ .width = 1, .height = 1, .size = 2 },
},
.num_subframes = 1,
.cookie = 4,
};
static const struct mxr_format mxr_fb_fmt_argb1555 = {
.name = "ARGB1555",
.num_planes = 1,
.fourcc = V4L2_PIX_FMT_RGB555,
.colorspace = V4L2_COLORSPACE_SRGB,
.plane = {
{ .width = 1, .height = 1, .size = 2 },
},
.num_subframes = 1,
.cookie = 5,
};
static const struct mxr_format mxr_fb_fmt_argb4444 = {
.name = "ARGB4444",
.num_planes = 1,
.fourcc = V4L2_PIX_FMT_RGB444,
.colorspace = V4L2_COLORSPACE_SRGB,
.plane = {
{ .width = 1, .height = 1, .size = 2 },
},
.num_subframes = 1,
.cookie = 6,
};
static const struct mxr_format mxr_fb_fmt_argb8888 = {
.name = "ARGB8888",
.fourcc = V4L2_PIX_FMT_BGR32,
.colorspace = V4L2_COLORSPACE_SRGB,
.num_planes = 1,
.plane = {
{ .width = 1, .height = 1, .size = 4 },
},
.num_subframes = 1,
.cookie = 7,
};
static const struct mxr_format *mxr_graph_format[] = {
&mxr_fb_fmt_rgb565,
&mxr_fb_fmt_argb1555,
&mxr_fb_fmt_argb4444,
&mxr_fb_fmt_argb8888,
};
/* AUXILIARY CALLBACKS */
static void mxr_graph_layer_release(struct mxr_layer *layer)
{
mxr_base_layer_unregister(layer);
mxr_base_layer_release(layer);
}
static void mxr_graph_buffer_set(struct mxr_layer *layer,
struct mxr_buffer *buf)
{
dma_addr_t addr = 0;
if (buf)
addr = vb2_dma_contig_plane_dma_addr(&buf->vb, 0);
mxr_reg_graph_buffer(layer->mdev, layer->idx, addr);
}
static void mxr_graph_stream_set(struct mxr_layer *layer, int en)
{
mxr_reg_graph_layer_stream(layer->mdev, layer->idx, en);
}
static void mxr_graph_format_set(struct mxr_layer *layer)
{
mxr_reg_graph_format(layer->mdev, layer->idx,
layer->fmt, &layer->geo);
}
static void mxr_graph_fix_geometry(struct mxr_layer *layer)
{
struct mxr_geometry *geo = &layer->geo;
/* limit to boundary size */
geo->src.full_width = clamp_val(geo->src.full_width, 1, 32767);
geo->src.full_height = clamp_val(geo->src.full_height, 1, 2047);
geo->src.width = clamp_val(geo->src.width, 1, geo->src.full_width);
geo->src.width = min(geo->src.width, 2047U);
/* not possible to crop of Y axis */
geo->src.y_offset = min(geo->src.y_offset, geo->src.full_height - 1);
geo->src.height = geo->src.full_height - geo->src.y_offset;
/* limitting offset */
geo->src.x_offset = min(geo->src.x_offset,
geo->src.full_width - geo->src.width);
/* setting position in output */
geo->dst.width = min(geo->dst.width, geo->dst.full_width);
geo->dst.height = min(geo->dst.height, geo->dst.full_height);
/* Mixer supports only 1x and 2x scaling */
if (geo->dst.width >= 2 * geo->src.width) {
geo->x_ratio = 1;
geo->dst.width = 2 * geo->src.width;
} else {
geo->x_ratio = 0;
geo->dst.width = geo->src.width;
}
if (geo->dst.height >= 2 * geo->src.height) {
geo->y_ratio = 1;
geo->dst.height = 2 * geo->src.height;
} else {
geo->y_ratio = 0;
geo->dst.height = geo->src.height;
}
geo->dst.x_offset = min(geo->dst.x_offset,
geo->dst.full_width - geo->dst.width);
geo->dst.y_offset = min(geo->dst.y_offset,
geo->dst.full_height - geo->dst.height);
}
/* PUBLIC API */
struct mxr_layer *mxr_graph_layer_create(struct mxr_device *mdev, int idx)
{
struct mxr_layer *layer;
int ret;
struct mxr_layer_ops ops = {
.release = mxr_graph_layer_release,
.buffer_set = mxr_graph_buffer_set,
.stream_set = mxr_graph_stream_set,
.format_set = mxr_graph_format_set,
.fix_geometry = mxr_graph_fix_geometry,
};
char name[32];
sprintf(name, "graph%d", idx);
layer = mxr_base_layer_create(mdev, idx, name, &ops);
if (layer == NULL) {
mxr_err(mdev, "failed to initialize layer(%d) base\n", idx);
goto fail;
}
layer->fmt_array = mxr_graph_format;
layer->fmt_array_size = ARRAY_SIZE(mxr_graph_format);
ret = mxr_base_layer_register(layer);
if (ret)
goto fail_layer;
return layer;
fail_layer:
mxr_base_layer_release(layer);
fail:
return NULL;
}
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