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drm/edid: use the new displayid iterator for tile info 

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.

Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/fa4b5c790b5bdd82063545a6f209f8e9d78a63a7.1617024940.git.jani.nikula@intel.com
This commit is contained in:
Jani Nikula 2021-03-29 16:37:20 +03:00
parent 1ba63caf22
commit bfd4e1929b
3 changed files with 10 additions and 45 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

6
drivers/gpu/drm/drm_displayid.c
View File

@ -33,9 +33,9 @@ static int validate_displayid(const u8 *displayid, int length, int idx)
return 0; return 0;
} }
const u8 *drm_find_displayid_extension(const struct edid *edid, static const u8 *drm_find_displayid_extension(const struct edid *edid,
int *length, int *idx, int *length, int *idx,
int *ext_index) int *ext_index)
{ {
const u8 *displayid = drm_find_edid_extension(edid, DISPLAYID_EXT, ext_index); const u8 *displayid = drm_find_edid_extension(edid, DISPLAYID_EXT, ext_index);
const struct displayid_hdr *base; const struct displayid_hdr *base;

37
drivers/gpu/drm/drm_edid.c
View File

@ -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, void drm_update_tile_info(struct drm_connector *connector,
const struct edid *edid) const struct edid *edid)
{ {
const void *displayid = NULL; const struct displayid_block *block;
int ext_index = 0; struct displayid_iter iter;
int length, idx;
connector->has_tile = false; 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) { if (!connector->has_tile && connector->tile_group) {
drm_mode_put_tile_group(connector->dev, connector->tile_group); drm_mode_put_tile_group(connector->dev, connector->tile_group);

12
include/drm/drm_displayid.h
View File

@ -96,18 +96,6 @@ struct displayid_detailed_timing_block {
struct displayid_detailed_timings_1 timings[]; 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 */ /* DisplayID iteration */
struct displayid_iter { struct displayid_iter {
const struct edid *edid; const struct edid *edid;