diff mbox series

[16/35] drm/i915/bios: Define ALM only VBT block 9 contents

Message ID 20240503122449.27266-17-ville.syrjala@linux.intel.com (mailing list archive)
State New, archived
Headers show
Series drm/i915/bios: Define (almost) all BDB blocks | expand

Commit Message

Ville Syrjala May 3, 2024, 12:24 p.m. UTC 
From: Ville Syrjälä <ville.syrjala@linux.intel.com>

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@linux.intel.com>
---
 drivers/gpu/drm/i915/display/intel_vbt_defs.h | 31 ++++++++++++-------
 1 file changed, 20 insertions(+), 11 deletions(-)
diff mbox series

Patch

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;