mirror of
https://mirrors.bfsu.edu.cn/git/linux.git
synced 2025-01-12 08:45:11 +08:00
56 lines
1.1 KiB
C
56 lines
1.1 KiB
C
|
// SPDX-License-Identifier: MIT
|
||
|
|
/*
|
||
|
|
* Copyright © 2023 Intel Corporation
|
||
|
|
*/
|
||
|
|
|
||
|
|
#include <drm/drm_edid.h>
|
||
|
|
#include <drm/drm_eld.h>
|
||
|
|
|
||
|
|
#include "drm_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);
|