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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-05-18 18:50:03 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-05-18 18:50:03 +0000
commit01a69402cf9d38ff180345d55c2ee51c7e89fbc7 (patch)
treeb406c5242a088c4f59c6e4b719b783f43aca6ae9 /drivers/gpu/drm/drm_eld.c
parentAdding upstream version 6.7.12. (diff)
downloadlinux-01a69402cf9d38ff180345d55c2ee51c7e89fbc7.tar.xz
linux-01a69402cf9d38ff180345d55c2ee51c7e89fbc7.zip
Adding upstream version 6.8.9.upstream/6.8.9
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'drivers/gpu/drm/drm_eld.c')
-rw-r--r--drivers/gpu/drm/drm_eld.c55
1 files changed, 55 insertions, 0 deletions
diff --git a/drivers/gpu/drm/drm_eld.c b/drivers/gpu/drm/drm_eld.c
new file mode 100644
index 0000000000..5177991aa2
--- /dev/null
+++ b/drivers/gpu/drm/drm_eld.c
@@ -0,0 +1,55 @@
+// 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);