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| author | Jani Nikula <jani.nikula@intel.com> | 2022-05-09 15:03:16 +0300 |
|---|---|---|
| committer | Jani Nikula <jani.nikula@intel.com> | 2022-05-13 18:54:44 +0300 |
| commit | bba4b6470b02c2d9a5074a40cff7246d3356f460 (patch) | |
| tree | 93658903879cd0f89c4893444dbe447a4f815783 /drivers/gpu/drm/drm_edid.c | |
| parent | 45aa2336fa6dbfa73d9081f75a4b813e747a55aa (diff) | |
| download | linux-bba4b6470b02c2d9a5074a40cff7246d3356f460.tar.xz | |
drm/edid: add drm_edid helper for drm_edid_to_sad()
We'll need to propagate drm_edid everywhere.
v2: Handle NULL EDID pointer (Ville, CI)
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Reviewed-by: Ankit Nautiyal <ankit.k.nautiyal@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/14aa1e44caa2e9c1b54c2f2a471d2fd7d3f62d5d.1652097712.git.jani.nikula@intel.com
Diffstat (limited to 'drivers/gpu/drm/drm_edid.c')
| -rw-r--r-- | drivers/gpu/drm/drm_edid.c | 34 |
1 files changed, 21 insertions, 13 deletions
diff --git a/drivers/gpu/drm/drm_edid.c b/drivers/gpu/drm/drm_edid.c index c311e0b9c65d..1e4228aa10fd 100644 --- a/drivers/gpu/drm/drm_edid.c +++ b/drivers/gpu/drm/drm_edid.c @@ -4972,24 +4972,14 @@ static void drm_edid_to_eld(struct drm_connector *connector, drm_eld_size(eld), total_sad_count); } -/** - * drm_edid_to_sad - extracts SADs from EDID - * @edid: EDID to parse - * @sads: pointer that will be set to the extracted SADs - * - * Looks for CEA EDID block and extracts SADs (Short Audio Descriptors) from it. - * - * Note: The returned pointer needs to be freed using kfree(). - * - * Return: The number of found SADs or negative number on error. - */ -int drm_edid_to_sad(const struct edid *edid, struct cea_sad **sads) +static int _drm_edid_to_sad(const struct drm_edid *drm_edid, + struct cea_sad **sads) { const struct cea_db *db; struct cea_db_iter iter; int count = 0; - cea_db_iter_edid_begin(edid, &iter); + cea_db_iter_edid_begin(drm_edid ? drm_edid->edid : NULL, &iter); cea_db_iter_for_each(db, &iter) { if (cea_db_tag(db) == CTA_DB_AUDIO) { int j; @@ -5015,6 +5005,24 @@ int drm_edid_to_sad(const struct edid *edid, struct cea_sad **sads) return count; } + +/** + * drm_edid_to_sad - extracts SADs from EDID + * @edid: EDID to parse + * @sads: pointer that will be set to the extracted SADs + * + * Looks for CEA EDID block and extracts SADs (Short Audio Descriptors) from it. + * + * Note: The returned pointer needs to be freed using kfree(). + * + * Return: The number of found SADs or negative number on error. + */ +int drm_edid_to_sad(const struct edid *edid, struct cea_sad **sads) +{ + struct drm_edid drm_edid; + + return _drm_edid_to_sad(drm_edid_legacy_init(&drm_edid, edid), sads); +} EXPORT_SYMBOL(drm_edid_to_sad); /** |