drm/i915/bios: store VBT #57's metadata in intel_vbt_data

Browse source

Store tables, number of tables, number of rows and number of columns in
intel_vbt_data when search for the VBT #57 has succeeded. Structurize
all VS/PE-O relevant metadata inside anonymous struct named as vspeo.

Presence of C20 or newer PHY causes each table to contain 16 rows. Each
table contains 10 rows in case C20 PHY is absent. Use display version to
determine number of rows since there is no helper in intel_bios.c to
check presence of any C20+ PHY. pre-MTL platforms should have 10 rows
while MTL+ should have 16 rows.

v5->v6
- add Bspec (Suraj)

v3->v4
- remove unnecessary init of VS/PE-O metadata (Suraj)
- add helper for computing number of rows (Suraj)
- fix num_rows's type (Jani, Suraj)
- declare num_rows (Suraj)

Bspec: 68963
Signed-off-by: Michał Grzelak <michal.grzelak@intel.com>
Reviewed-by: Suraj Kandpal <suraj.kandpal@intel.com>
Acked-by: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Suraj Kandpal <suraj.kandpal@intel.com>
Link: https://patch.msgid.link/20260904123148.2165596-3-michal.grzelak@intel.com

...

This commit is contained in:

Michał Grzelak 2026-09-04 14:31:42 +02:00 • committed by Suraj Kandpal

parent 3018008dc1

commit c76c03dab8

2 changed files with 17 additions and 0 deletions

Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL

Download patch file Download diff file Expand all files Collapse all files

10

drivers/gpu/drm/i915/display/intel_bios.c

View file

7

drivers/gpu/drm/i915/display/intel_display_core.h

View file