From: Ville Syrjälä <ville.syrjala@linux.intel.com>
Date: Fri, 3 May 2024 12:24:34 +0000 (+0300)
Subject: drm/i915/bios: Define VBT blocks 19,30,32 (Display Configuration Removal Table) contents
X-Git-Url: https://www.infradead.org/git/?a=commitdiff_plain;h=e225161e2aff5dffd1ff754d86c17c7f9b6457f5;p=users%2Fjedix%2Flinux-maple.git

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: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240503122449.27266-21-ville.syrjala@linux.intel.com
Acked-by: Jani Nikula <jani.nikula@intel.com>
---

diff --git a/drivers/gpu/drm/i915/display/intel_vbt_defs.h b/drivers/gpu/drm/i915/display/intel_vbt_defs.h
index 63cfb1684c71..0ae1d242a420 100644
--- a/drivers/gpu/drm/i915/display/intel_vbt_defs.h
+++ b/drivers/gpu/drm/i915/display/intel_vbt_defs.h
@@ -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
  */