Neatly reduce displayid boilerplate in code. No functional changes.
Signed-off-by: Jani Nikula <jani.nikula@xxxxxxxxx>
---
drivers/gpu/drm/drm_edid.c | 25 +++++++++----------------
1 file changed, 9 insertions(+), 16 deletions(-)
diff --git a/drivers/gpu/drm/drm_edid.c b/drivers/gpu/drm/drm_edid.c
index fbaa7d679cb2..4526e2557dca 100644
--- a/drivers/gpu/drm/drm_edid.c
+++ b/drivers/gpu/drm/drm_edid.c
@@ -3266,35 +3266,28 @@ const u8 *drm_find_edid_extension(const struct edid *edid,
static const u8 *drm_find_cea_extension(const struct edid *edid)
{
- int length, idx;
const struct displayid_block *block;
+ struct displayid_iter iter;
const u8 *cea;
- const u8 *displayid;
- int ext_index;
+ int ext_index = 0;
/* Look for a top level CEA extension block */
/* FIXME: make callers iterate through multiple CEA ext blocks? */
- ext_index = 0;
cea = drm_find_edid_extension(edid, CEA_EXT, &ext_index);
if (cea)
return cea;
/* CEA blocks can also be found embedded in a DisplayID block */
- ext_index = 0;
- for (;;) {
- displayid = drm_find_displayid_extension(edid, &length, &idx,
- &ext_index);
- if (!displayid)
- return NULL;
-
- idx += sizeof(struct displayid_hdr);
- for_each_displayid_db(displayid, block, idx, length) {
- if (block->tag == DATA_BLOCK_CTA)
- return (const u8 *)block;
+ displayid_iter_edid_begin(edid, &iter);
+ displayid_iter_for_each(block, &iter) {
+ if (block->tag == DATA_BLOCK_CTA) {
+ cea = (const u8 *)block;
+ break;
}
}
+ displayid_iter_end(&iter);
- return NULL;
+ return cea;
}
static __always_inline const struct drm_display_mode *cea_mode_for_vic(u8 vic)
--
2.20.1
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