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drm/i915/bios: Define VBT blocks 6,7,8 (register tables) contents

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Define the contents for VBT blocks:
- Block 6 (Extended MMIO Register Table)
- Block 7 (IO Software Flag Table)
- Block 8 (MMIO SWF Register Table)

All of these use the same basic layout, with two known variants:
- data_access_size==0xce -> offset,value tuples are u8,u8
- data_access_size==0x02 -> offset,value tuples are u32,u32

Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240503122449.27266-13-ville.syrjala@linux.intel.com
Reviewed-by: Jani Nikula <jani.nikula@intel.com>
This commit is contained in:
Ville Syrjälä 2024-05-03 15:24:26 +03:00
parent 2e8b807317
commit 2318da471a
1 changed files with 16 additions and 0 deletions
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16
drivers/gpu/drm/i915/display/intel_vbt_defs.h
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@ -634,6 +634,22 @@ struct bdb_generic_mode_table_mgm {
struct generic_mode_timings timings[3];
} __packed;
/*
* Block 6 - Extended MMIO Register Table, VBIOS only
* Block 7 - IO Software Flag Table, VBIOS only
* Block 8 - MMIO SWF Register Table, VBIOS only
*/
struct bdb_reg_table {
u16 table_id;
u8 data_access_size;
/*
* offset,value tuples:
* data_access_size==0xce -> u8,u8
* data_access_size==0x02 -> u32,u32
*/
/* u16 table_end_marker; */
} __packed;
/*
* Block 9 - SRD Feature Block
*/