Neatly reduce displayid boilerplate in code. No functional changes.
Reviewed-by: Ville Syrjälä ville.syrjala@linux.intel.com Signed-off-by: Jani Nikula jani.nikula@intel.com --- 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)