Commit 2e8b8073 authored by Ville Syrjälä's avatar Ville Syrjälä
Browse files

drm/i915/bios: Define VBT block 5 (Generic Mode Table) 



Define the contents of VBT block 5 (Generic Mode Table).

Details were mostly gleaned from some VBIOS sources.

There are apparently two variants of the block: ALM only
vs. MGM, defined here as bdb_generic_mode_table_alm
and bdb_generic_mode_table_mgm. And those are the only two
platforms where I've seen this block.

Signed-off-by: default avatarVille Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240503122449.27266-12-ville.syrjala@linux.intel.com


Acked-by: default avatarJani Nikula <jani.nikula@intel.com>
parent 22794e6c

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

+54 −0
Original line number Diff line number Diff line
@@ -580,6 +580,60 @@ struct bdb_mode_support_list { 
	u16 mode_list_length;

} __packed;



/*

 * Block 5 - Generic Mode Table

 */



struct generic_mode_table {

	u16 x_res;

	u16 y_res;

	u8 color_depths;

	u8 refresh_rate[3];

	u8 reserved;

	u8 text_cols;

	u8 text_rows;

	u8 font_height;

	u16 page_size;

	u8 misc;

} __packed;



struct generic_mode_timings {

	u32 dotclock_khz;

	u16 hdisplay;

	u16 htotal;

	u16 hblank_start;

	u16 hblank_end;

	u16 hsync_start;

	u16 hsync_end;

	u16 vdisplay;

	u16 vtotal;

	u16 vblank_start;

	u16 vblank_end;

	u16 vsync_start;

	u16 vsync_end;

} __packed;



struct generic_mode_timings_alm {

	struct generic_mode_timings timings;

	u8 wm_8bpp;

	u8 burst_8bpp;

	u8 wm_16bpp;

	u8 burst_16bpp;

	u8 wm_32bpp;

	u8 burst_32bpp;

} __packed;



struct bdb_generic_mode_table_alm {

	struct generic_mode_table table;

	struct generic_mode_timings_alm timings[3];

} __packed;



struct bdb_generic_mode_table_mgm {

	u16 mode_flag;

	struct generic_mode_table table;

	struct generic_mode_timings timings[3];

} __packed;



/*

 * Block 9 - SRD Feature Block

 */