Iterate through all CEA data blocks.
Signed-off-by: Jani Nikula jani.nikula@intel.com --- drivers/gpu/drm/drm_edid.c | 23 +++++++++++++---------- 1 file changed, 13 insertions(+), 10 deletions(-)
diff --git a/drivers/gpu/drm/drm_edid.c b/drivers/gpu/drm/drm_edid.c index 399e69dc1aed..77763d94dd93 100644 --- a/drivers/gpu/drm/drm_edid.c +++ b/drivers/gpu/drm/drm_edid.c @@ -5013,10 +5013,10 @@ EXPORT_SYMBOL(drm_detect_hdmi_monitor); */ bool drm_detect_monitor_audio(struct edid *edid) { + const struct cea_db *db; + struct cea_db_iter iter; const u8 *edid_ext; - int i, j; bool has_audio = false; - int start_offset, end_offset;
edid_ext = drm_find_cea_extension(edid); if (!edid_ext) @@ -5029,18 +5029,21 @@ bool drm_detect_monitor_audio(struct edid *edid) goto end; }
- if (cea_db_offsets(edid_ext, &start_offset, &end_offset)) - goto end; + cea_db_iter_edid_begin(edid, &iter); + cea_db_iter_for_each(db, &iter) { + if (cea_db_tag(db) == CEA_DB_AUDIO) { + const u8 *data = cea_db_data(db); + int i;
- for_each_cea_db(edid_ext, i, start_offset, end_offset) { - if (cea_db_tag(&edid_ext[i]) == CEA_DB_AUDIO) { - has_audio = true; - for (j = 1; j < cea_db_payload_len(&edid_ext[i]) + 1; j += 3) + for (i = 0; i < cea_db_payload_len(db); i += 3) DRM_DEBUG_KMS("CEA audio format %d\n", - (edid_ext[i + j] >> 3) & 0xf); - goto end; + (data[i] >> 3) & 0xf); + has_audio = true; + break; } } + cea_db_iter_end(&iter); + end: return has_audio; }