Commit 55c6b986 authored by Ville Syrjälä's avatar Ville Syrjälä
Browse files

drm/i915/bios: Define ALM only VBT block 9 contents 



For some reason ALM VBT has two dot clock override tables.
One as the normal block 15 and a second one as block 9.
The table in block 9 has no row_size/num_rows information.

On my Fujitsu Lifebook S6010 only the block 9 table has actual
data in it. Block 15 is present but all zeroes.

Signed-off-by: default avatarVille Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240503122449.27266-17-ville.syrjala@linux.intel.com


Acked-by: default avatarJani Nikula <jani.nikula@intel.com>
parent f7d5b5ff

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

+20 −11
Original line number Diff line number Diff line
@@ -147,6 +147,7 @@ enum bdb_block_id { 
	BDB_EXT_MMIO_REGS		= 6, /* VBIOS only */

	BDB_SWF_IO			= 7, /* VBIOS only */

	BDB_SWF_MMIO			= 8, /* VBIOS only */

	BDB_DOT_CLOCK_OVERRIDE_ALM	= 9,

	BDB_PSR				= 9, /* 165+ */

	BDB_MODE_REMOVAL_TABLE		= 10,

	BDB_CHILD_DEVICE_TABLE		= 11,
@@ -650,6 +651,25 @@ struct bdb_reg_table { 
	/* u16 table_end_marker; */

} __packed;



/*

 * Block 9 - Undocumented table (ALM only)

 */



struct dot_clock_override_entry_gen2 {

	u32 dotclock;

	u8 n;

	u8 m1;

	u8 m2;

	u8 p1:5;

	u8 p1_div_by_2:1;

	u8 reserved:1;

	u8 p2_div_by_4:1;

} __packed;



struct bdb_dot_clock_override_alm {

	struct dot_clock_override_entry_gen2 t[0];

} __packed;



/*

 * Block 9 - SRD Feature Block

 */
@@ -801,17 +821,6 @@ struct bdb_driver_persistence { 
 * Block 15 - Dot Clock Override Table

 */



struct dot_clock_override_entry_gen2 {

	u32 dotclock;

	u8 n;

	u8 m1;

	u8 m2;

	u8 p1:5;

	u8 p1_div_by_2:1;

	u8 reserved:1;

	u8 p2_div_by_4:1;

} __packed;



struct dot_clock_override_entry_gen3 {

	u32 dotclock;

	u8 n;