1 // SPDX-License-Identifier: MIT
3 * Copyright © 2023 Intel Corporation
6 #include <linux/export.h>
8 #include <drm/drm_edid.h>
9 #include <drm/drm_eld.h>
11 #include "drm_crtc_internal.h"
14 * drm_eld_sad_get - get SAD from ELD to struct cea_sad
16 * @sad_index: SAD index
17 * @cta_sad: destination struct cea_sad
19 * @return: 0 on success, or negative on errors
21 int drm_eld_sad_get(const u8 *eld, int sad_index, struct cea_sad *cta_sad)
25 if (sad_index >= drm_eld_sad_count(eld))
28 sad = eld + DRM_ELD_CEA_SAD(drm_eld_mnl(eld), sad_index);
30 drm_edid_cta_sad_set(cta_sad, sad);
34 EXPORT_SYMBOL(drm_eld_sad_get);
37 * drm_eld_sad_set - set SAD to ELD from struct cea_sad
39 * @sad_index: SAD index
40 * @cta_sad: source struct cea_sad
42 * @return: 0 on success, or negative on errors
44 int drm_eld_sad_set(u8 *eld, int sad_index, const struct cea_sad *cta_sad)
48 if (sad_index >= drm_eld_sad_count(eld))
51 sad = eld + DRM_ELD_CEA_SAD(drm_eld_mnl(eld), sad_index);
53 drm_edid_cta_sad_get(cta_sad, sad);
57 EXPORT_SYMBOL(drm_eld_sad_set);