Commit e225161e authored by Ville Syrjälä's avatar Ville Syrjälä
Browse files

drm/i915/bios: Define VBT blocks 19,30,32 (Display Configuration Removal Table) contents 



Define the contenst is VBT blocks 19,30,32 (Display Configuration
Removal Table) contents. There are three variants of this block:
pre-IVB, IVB, HSW+, with each having slightly different entries.

Curiously many HSW/BDW machines seem to have both the IVB and HSW+
variants in their VBTs simultanously. No idea why.

Signed-off-by: default avatarVille Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240503122449.27266-21-ville.syrjala@linux.intel.com


Acked-by: default avatarJani Nikula <jani.nikula@intel.com>
parent e547b97e

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

+46 −1
Original line number Diff line number Diff line
@@ -158,7 +158,7 @@ enum bdb_block_id { 
	BDB_DISPLAY_SELECT_OLD		= 16,

	BDB_SV_TEST_FUNCTIONS		= 17,

	BDB_DRIVER_ROTATION		= 18,

	BDB_DISPLAY_REMOVE		= 19,

	BDB_DISPLAY_REMOVE_OLD		= 19,

	BDB_OEM_CUSTOM			= 20,

	BDB_EFP_LIST			= 21, /* workarounds for VGA hsync/vsync */

	BDB_SDVO_LVDS_OPTIONS		= 22,
@@ -168,7 +168,9 @@ enum bdb_block_id { 
	BDB_TV_OPTIONS			= 26,

	BDB_EDP				= 27,

	BDB_DISPLAY_SELECT_IVB		= 29, /* 164+ */

	BDB_DISPLAY_REMOVE_IVB		= 30, /* 164+ */

	BDB_DISPLAY_SELECT_HSW		= 31, /* 166+ */

	BDB_DISPLAY_REMOVE_HSW		= 32, /* 166+ */

	BDB_LFP_OPTIONS			= 40,

	BDB_LFP_DATA_PTRS		= 41,

	BDB_LFP_DATA			= 42,
@@ -880,6 +882,21 @@ struct bdb_driver_rotation { 
	u32 rotation_flags_4;

} __packed;



/*

 * Block 19 - Display Configuration Removal Table (pre-IVB)

 */



struct display_remove_entry_old {

	u8 display_select_pipe_a;

	u8 display_select_pipe_b;

} __packed;



struct bdb_display_remove_old {

	u8 num_entries;

	u8 entry_size;

	struct display_remove_entry_old table[];

} __packed;



/*

 * Block 22 - SDVO LVDS General Options

 */
@@ -999,6 +1016,20 @@ struct bdb_display_select_ivb { 
	struct toggle_list_table_ivb tables[4];

} __packed;



/*

 * Block 30 - Display Configuration Removal Table (IVB)

 */



struct display_remove_entry_ivb {

	u8 display_select;

} __packed;



struct bdb_display_remove_ivb {

	u8 num_entries;

	u8 entry_size;

	struct display_remove_entry_ivb table[];

} __packed;



/*

 * Block 31 - Toggle List Block (HSW+)

 */
@@ -1018,6 +1049,20 @@ struct bdb_display_select_hsw { 
	struct toggle_list_table_hsw tables[4];

} __packed;



/*

 * Block 32 - Display Configuration Removal Table (HSW+)

 */



struct display_remove_entry_hsw {

	u16 display_select;

} __packed;



struct bdb_display_remove_hsw {

	u8 num_entries;

	u8 entry_size;

	struct display_remove_entry_hsw table[];

} __packed;



/*

 * Block 40 - LFP Data Block

 */