drm/i915/bios: Define VBT block 55 (RGB Palette Table) contents

Define the contents of VBT block 55 (RGB Palette Table).

Note that I've not actually seen any real world VBTs with this
block.

Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240503122449.27266-31-ville.syrjala@linux.intel.com
Reviewed-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 11c4b5bb2151a69398eba70c0f5d16ac4af82f49..089c3d2276db8babdb5b6747f7a0ed066592138b 100644 (file)
--- a/drivers/gpu/drm/i915/display/intel_vbt_defs.h
+++ b/drivers/gpu/drm/i915/display/intel_vbt_defs.h
@@ -182,6 +182,7 @@ enum bdb_block_id {
        BDB_FIXED_SET_MODE              = 51, /* 172+ */
        BDB_MIPI_CONFIG                 = 52, /* 175+ */
        BDB_MIPI_SEQUENCE               = 53, /* 177+ */
+       BDB_RGB_PALETTE                 = 54, /* 180+ */
        BDB_COMPRESSION_PARAMETERS      = 56, /* 213+ */
        BDB_GENERIC_DTD                 = 58, /* 229+ */
        BDB_SKIP                        = 254, /* VBIOS only */
@@ -1418,6 +1419,17 @@ struct bdb_mipi_sequence {
        u8 data[]; /* up to 6 variable length blocks */
 } __packed;
 
+/*
+ * Block 55 - RGB Palette Table
+ */
+
+struct bdb_rgb_palette {
+       u8 is_enabled;
+       u8 red[256];
+       u8 blue[256];
+       u8 green[256];
+} __packed;
+
 /*
  * Block 56 - Compression Parameters
  */