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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"
#if defined(CONFIG_VIDEOBUF2_CMA_PHYS)
#include <media/videobuf2-cma-phys.h>
#elif defined(CONFIG_VIDEOBUF2_ION)
#include <media/videobuf2-ion.h>
#endif
/* AUXILIARY CALLBACKS */
static void mxr_video_layer_release(struct mxr_layer *layer)
{
mxr_base_layer_release(layer);
}
static void mxr_video_stream_set(struct mxr_layer *layer, int en) {
mxr_reg_video_layer_stream(layer->mdev, layer->idx, en);
}
static void mxr_video_format_set(struct mxr_layer *layer)
{
mxr_reg_video_geo(layer->mdev, layer->cur_mxr, layer->idx, &layer->geo);
}
static void mxr_video_fix_geometry(struct mxr_layer *layer)
{
struct mxr_geometry *geo = &layer->geo;
mxr_dbg(layer->mdev, "%s start\n", __func__);
geo->dst.x_offset = clamp_val(geo->dst.x_offset, 0,
geo->dst.full_width - 1);
geo->dst.y_offset = clamp_val(geo->dst.y_offset, 0,
geo->dst.full_height - 1);
/* mixer scale-up is unuseful. so no use it */
geo->dst.width = clamp_val(geo->dst.width, 1,
geo->dst.full_width - geo->dst.x_offset);
geo->dst.height = clamp_val(geo->dst.height, 1,
geo->dst.full_height - geo->dst.y_offset);
}
/* PUBLIC API */
struct mxr_layer *mxr_video_layer_create(struct mxr_device *mdev, int cur_mxr,
int idx)
{
struct mxr_layer *layer;
struct mxr_layer_ops ops = {
.release = mxr_video_layer_release,
.stream_set = mxr_video_stream_set,
.format_set = mxr_video_format_set,
.fix_geometry = mxr_video_fix_geometry,
};
layer = kzalloc(sizeof *layer, GFP_KERNEL);
if (layer == NULL) {
mxr_err(mdev, "not enough memory for layer.\n");
goto fail;
}
layer->mdev = mdev;
layer->idx = idx;
layer->type = MXR_LAYER_TYPE_VIDEO;
layer->ops = ops;
layer->prio = 1;
layer->cur_mxr = cur_mxr;
mxr_layer_default_geo(layer);
return layer;
fail:
return NULL;
}
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