On Tue, Mar 09, 2021 at 03:54:14PM +0200, Jani Nikula wrote:
> Neatly reduce displayid boilerplate in code. Remove excessive debug
> logging while at it, no other functional changes.
>
> The old displayid iterator becomes unused; remove it as well as make
> drm_find_displayid_extension() static.
>
> Signed-off-by: Jani Nikula <jani.nikula@xxxxxxxxx>
Reviewed-by: Ville Syrjälä <ville.syrjala@xxxxxxxxxxxxxxx>
Hopeuflly you tested with some of those weird EDIDs with
multiple DisplayID and/or CEA blocks ;)
I was thinking we should try to coalesce an iterator for
the CEA stuff as well...
> ---
> drivers/gpu/drm/drm_displayid.c | 6 +++---
> drivers/gpu/drm/drm_edid.c | 37 +++++++--------------------------
> include/drm/drm_displayid.h | 12 -----------
> 3 files changed, 10 insertions(+), 45 deletions(-)
>
> diff --git a/drivers/gpu/drm/drm_displayid.c b/drivers/gpu/drm/drm_displayid.c
> index 88070267aac9..b146f2d0d72a 100644
> --- a/drivers/gpu/drm/drm_displayid.c
> +++ b/drivers/gpu/drm/drm_displayid.c
> @@ -33,9 +33,9 @@ static int validate_displayid(const u8 *displayid, int length, int idx)
> return 0;
> }
>
> -const u8 *drm_find_displayid_extension(const struct edid *edid,
> - int *length, int *idx,
> - int *ext_index)
> +static const u8 *drm_find_displayid_extension(const struct edid *edid,
> + int *length, int *idx,
> + int *ext_index)
> {
> const u8 *displayid = drm_find_edid_extension(edid, DISPLAYID_EXT, ext_index);
> const struct displayid_hdr *base;
> diff --git a/drivers/gpu/drm/drm_edid.c b/drivers/gpu/drm/drm_edid.c
> index 4526e2557dca..81d5f2524246 100644
> --- a/drivers/gpu/drm/drm_edid.c
> +++ b/drivers/gpu/drm/drm_edid.c
> @@ -5969,43 +5969,20 @@ static void drm_parse_tiled_block(struct drm_connector *connector,
> }
> }
>
> -static void drm_displayid_parse_tiled(struct drm_connector *connector,
> - const u8 *displayid, int length, int idx)
> -{
> - const struct displayid_block *block;
> -
> - idx += sizeof(struct displayid_hdr);
> - for_each_displayid_db(displayid, block, idx, length) {
> - DRM_DEBUG_KMS("block id 0x%x, rev %d, len %d\n",
> - block->tag, block->rev, block->num_bytes);
> -
> - switch (block->tag) {
> - case DATA_BLOCK_TILED_DISPLAY:
> - drm_parse_tiled_block(connector, block);
> - break;
> - default:
> - DRM_DEBUG_KMS("found DisplayID tag 0x%x, unhandled\n", block->tag);
> - break;
> - }
> - }
> -}
> -
> void drm_update_tile_info(struct drm_connector *connector,
> const struct edid *edid)
> {
> - const void *displayid = NULL;
> - int ext_index = 0;
> - int length, idx;
> + const struct displayid_block *block;
> + struct displayid_iter iter;
>
> connector->has_tile = false;
> - for (;;) {
> - displayid = drm_find_displayid_extension(edid, &length, &idx,
> - &ext_index);
> - if (!displayid)
> - break;
>
> - drm_displayid_parse_tiled(connector, displayid, length, idx);
> + displayid_iter_edid_begin(edid, &iter);
> + displayid_iter_for_each(block, &iter) {
> + if (block->tag == DATA_BLOCK_TILED_DISPLAY)
> + drm_parse_tiled_block(connector, block);
> }
> + displayid_iter_end(&iter);
>
> if (!connector->has_tile && connector->tile_group) {
> drm_mode_put_tile_group(connector->dev, connector->tile_group);
> diff --git a/include/drm/drm_displayid.h b/include/drm/drm_displayid.h
> index 27e06c98db17..10ee863f1734 100644
> --- a/include/drm/drm_displayid.h
> +++ b/include/drm/drm_displayid.h
> @@ -96,18 +96,6 @@ struct displayid_detailed_timing_block {
> struct displayid_detailed_timings_1 timings[];
> };
>
> -#define for_each_displayid_db(displayid, block, idx, length) \
> - for ((block) = (const struct displayid_block *)&(displayid)[idx]; \
> - (idx) + sizeof(struct displayid_block) <= (length) && \
> - (idx) + sizeof(struct displayid_block) + (block)->num_bytes <= (length) && \
> - (block)->num_bytes > 0; \
> - (idx) += sizeof(struct displayid_block) + (block)->num_bytes, \
> - (block) = (const struct displayid_block *)&(displayid)[idx])
> -
> -const u8 *drm_find_displayid_extension(const struct edid *edid,
> - int *length, int *idx,
> - int *ext_index);
> -
> /* DisplayID iteration */
> struct displayid_iter {
> const struct edid *edid;
> --
> 2.20.1
>
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> Intel-gfx@xxxxxxxxxxxxxxxxxxxxx
> https://lists.freedesktop.org/mailman/listinfo/intel-gfx
--
Ville Syrjälä
Intel
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