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drm/i915/bios: Define VBT block 3 (Display Toggle Option) contents

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Define the contents of VBT block 3 (Display Toggle Option).

On modern VBTs this is just a single byte, but on ALM there is
also some extra to do with toggle lists or something.

Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240503122449.27266-10-ville.syrjala@linux.intel.com
Acked-by: Jani Nikula <jani.nikula@intel.com>
This commit is contained in:
Ville Syrjälä 2024-05-03 15:24:23 +03:00
parent a17b317c11
commit c58f254be3
1 changed files with 11 additions and 1 deletions
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12
drivers/gpu/drm/i915/display/intel_vbt_defs.h
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@ -141,7 +141,7 @@ struct bdb_header {
enum bdb_block_id {
BDB_GENERAL_FEATURES = 1,
BDB_GENERAL_DEFINITIONS = 2,
BDB_OLD_TOGGLE_LIST = 3,
BDB_DISPLAY_TOGGLE = 3,
BDB_MODE_SUPPORT_LIST = 4,
BDB_GENERIC_MODE_TABLE = 5,
BDB_EXT_MMIO_REGS = 6, /* VBIOS only */
@ -561,6 +561,16 @@ struct bdb_general_definitions {
u8 devices[];
} __packed;
/*
* Block 3 - Display Toggle Option Block
*/
struct bdb_display_toggle {
u8 feature_bits;
u16 num_entries; /* ALM only */
u16 list[]; /* ALM only */
} __packed;
/*
* Block 9 - SRD Feature Block
*/