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drm/edid: take HF-EEODB extension count into account

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Take the HF-EEODB extension count override into account.

Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/c31b5796feb05c3ebac067600be2e88e098d7592.1656494768.git.jani.nikula@intel.com
This commit is contained in:
Jani Nikula 2022-06-29 12:27:55 +03:00
parent 18e3c1d5d4
commit b1dee9527e
1 changed files with 13 additions and 0 deletions
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13
drivers/gpu/drm/drm_edid.c
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@ -1629,6 +1629,19 @@ static int drm_edid_block_count(const struct drm_edid *drm_edid)
/* Starting point */
num_blocks = edid_block_count(drm_edid->edid);
/* HF-EEODB override */
if (drm_edid->size >= edid_size_by_blocks(2)) {
int eeodb;
/*
* Note: HF-EEODB may specify a smaller extension count than the
* regular one. Unlike in buffer allocation, here we can use it.
*/
eeodb = edid_hfeeodb_block_count(drm_edid->edid);
if (eeodb)
num_blocks = eeodb;
}
/* Limit by allocated size */
num_blocks = min(num_blocks, (int)drm_edid->size / EDID_LENGTH);