- Backlight related fields in MBOX2 has uncalibrated brightness support
- Valid Bit added for BCL in MBOX2
Signed-off-by: Ck, Chitralekha <chitralekha...@intel.com>
Cc: Rangasai V Chaganty <rangasai.v.chaga...@intel.com>
Cc: Ashraf Ali S <ashraf.al...@intel.com>
Cc: Ray Ni <ray...@intel.com>
---
.../Include/IndustryStandard/IgdOpRegion32.h | 58 +++++++++++++++++++
1 file changed, 58 insertions(+)
create mode 100644
Silicon/Intel/IntelSiliconPkg/Include/IndustryStandard/IgdOpRegion32.h
diff --git
a/Silicon/Intel/IntelSiliconPkg/Include/IndustryStandard/IgdOpRegion32.h
b/Silicon/Intel/IntelSiliconPkg/Include/IndustryStandard/IgdOpRegion32.h
new file mode 100644
index 00000000..657a1a6c
--- /dev/null
+++ b/Silicon/Intel/IntelSiliconPkg/Include/IndustryStandard/IgdOpRegion32.h
@@ -0,0 +1,58 @@
+/** @file
+ IGD OpRegion definition from Intel Integrated Graphics Device OpRegion
+ Specification based on version 3.2.
+
+ Copyright (c) 2024, Intel Corporation. All rights reserved.<BR>
+ SPDX-License-Identifier: BSD-2-Clause-Patent
+
+**/
+#ifndef _IGD_OPREGION_3_2_H_
+#define _IGD_OPREGION_3_2_H_
+
+#include "IgdOpRegion30.h"
+
+#define IGD_OPREGION_HEADER_MBOX2_VER_3_2 BIT5
+
+#pragma pack(1)
+
+///
+/// Backlight Brightness for LFP1 and LFP2
+///
+typedef union {
+ typedef struct {
+ UINT32 Brightness : 8; ///< Backlight Brightness
+ UINT32 Rsvd : 22; ///< Reserved Bit
+ UINT32 Ubs : 1; ///< Uncalibrated Brightness Support
+ UINT32 FValid : 1; ///< Field Valid Bit
+ } Bits;
+ UINT32 Data;
+} IGD_BCL;
+
+///
+/// OpRegion Mailbox 2 - Backlight communication
+/// Offset 0x200, Size 0x100
+///
+typedef struct {
+ IGD_BCL BCL1; ///< Offset 0x200 Backlight Brightness for LFP1
+ IGD_BCL BCL2; ///< Offset 0x204 Backlight Brightness for LFP2
+ UINT32 CBL1; ///< Offset 0x208 Current User Brightness Level for
LFP1
+ UINT32 CBL2; ///< Offset 0x20C Current User Brightness Level for
LFP2
+ UINT32 BCM1[0x1E]; ///< Offset 0x210 Backlight Brightness Levels Duty
Cycle Mapping Table for LFP1
+ UINT32 BCM2[0x1E]; ///< Offset 0x288 Backlight Brightness Levels Duty
Cycle Mapping Table for LFP2
+} IGD_OPREGION_MBOX2_VER_3_2;
+
+
+///
+/// IGD OpRegion Structure
+///
+typedef struct {
+ IGD_OPREGION_HEADER Header; ///< OpRegion header (Offset 0x0, Size
0x100)
+ IGD_OPREGION_MBOX1_VER_3_0 MBox1; ///< Mailbox 1: Public ACPI Methods
(Offset 0x100, Size 0x100)
+ IGD_OPREGION_MBOX2_VER_3_2 MBox2; ///< Mailbox 2: Backlight communication
(Offset 0x200, Size 0x100)
+ IGD_OPREGION_MBOX3_VER_3_0 MBox3; ///< Mailbox 3: BIOS to Driver
Notification (Offset 0x300, Size 0x100)
+ IGD_OPREGION_MBOX4 MBox4; ///< Mailbox 4: Video BIOS Table (VBT)
(Offset 0x400, Size 0x1800)
+ IGD_OPREGION_MBOX5 MBox5; ///< Mailbox 5: BIOS to Driver
Notification Extension (Offset 0x1C00, Size 0x400)
+} IGD_OPREGION_STRUCTURE_VER_3_2;
+#pragma pack()
+
+#endif
\ No newline at end of file
--
2.42.0.windows.2
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