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// SPDX-License-Identifier: MIT
/*
* Copyright © 2023 Intel Corporation
*/
#include <linux/export.h>
#include <drm/drm_edid.h>
#include <drm/drm_eld.h>
#include "drm_crtc_internal.h"
/**
* drm_eld_sad_get - get SAD from ELD to struct cea_sad
* @eld: ELD buffer
* @sad_index: SAD index
* @cta_sad: destination struct cea_sad
*
* @return: 0 on success, or negative on errors
*/
int drm_eld_sad_get(const u8 *eld, int sad_index, struct cea_sad *cta_sad)
{
const u8 *sad;
if (sad_index >= drm_eld_sad_count(eld))
return -EINVAL;
sad = eld + DRM_ELD_CEA_SAD(drm_eld_mnl(eld), sad_index);
drm_edid_cta_sad_set(cta_sad, sad);
return 0;
}
EXPORT_SYMBOL(drm_eld_sad_get);
/**
* drm_eld_sad_set - set SAD to ELD from struct cea_sad
* @eld: ELD buffer
* @sad_index: SAD index
* @cta_sad: source struct cea_sad
*
* @return: 0 on success, or negative on errors
*/
int drm_eld_sad_set(u8 *eld, int sad_index, const struct cea_sad *cta_sad)
{
u8 *sad;
if (sad_index >= drm_eld_sad_count(eld))
return -EINVAL;
sad = eld + DRM_ELD_CEA_SAD(drm_eld_mnl(eld), sad_index);
drm_edid_cta_sad_get(cta_sad, sad);
return 0;
}
EXPORT_SYMBOL(drm_eld_sad_set);
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