From: Ville Syrjälä <ville.syrjala@xxxxxxxxxxxxxxx>
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: Ville Syrjälä <ville.syrjala@xxxxxxxxxxxxxxx>
---
drivers/gpu/drm/i915/display/intel_vbt_defs.h | 31 ++++++++++++-------
1 file changed, 20 insertions(+), 11 deletions(-)
diff --git a/drivers/gpu/drm/i915/display/intel_vbt_defs.h b/drivers/gpu/drm/i915/display/intel_vbt_defs.h
index c2f73c7d9412..b836dee09f59 100644
--- a/drivers/gpu/drm/i915/display/intel_vbt_defs.h
+++ b/drivers/gpu/drm/i915/display/intel_vbt_defs.h
@@ -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;
--
2.43.2
