From 22794e6cee284c154a464ef6c58219e35739a3fe Mon Sep 17 00:00:00 2001 From: =?utf8?q?Ville=20Syrj=C3=A4l=C3=A4?= Date: Fri, 3 May 2024 15:24:24 +0300 Subject: [PATCH] drm/i915/bios: Define VBT block 4 (Mode Support List) contents MIME-Version: 1.0 Content-Type: text/plain; charset=utf8 Content-Transfer-Encoding: 8bit Define the contents of VBT block 4 (Mode Support List). Slightly crazy layout with a variable length list at the start, followed by the length of said list. No real idea what these "Intel mode numbers" really are. What I see in real world VBTs seems to be always the same list of 26 numbers, ranging between 0x30 and 0x84. Signed-off-by: Ville Syrjälä Link: https://patchwork.freedesktop.org/patch/msgid/20240503122449.27266-11-ville.syrjala@linux.intel.com Reviewed-by: Jani Nikula --- drivers/gpu/drm/i915/display/intel_vbt_defs.h | 9 +++++++++ 1 file changed, 9 insertions(+) diff --git a/drivers/gpu/drm/i915/display/intel_vbt_defs.h b/drivers/gpu/drm/i915/display/intel_vbt_defs.h index 816d81071437..a49d84401df1 100644 --- a/drivers/gpu/drm/i915/display/intel_vbt_defs.h +++ b/drivers/gpu/drm/i915/display/intel_vbt_defs.h @@ -571,6 +571,15 @@ struct bdb_display_toggle { u16 list[]; /* ALM only */ } __packed; +/* + * Block 4 - Mode Support List + */ + +struct bdb_mode_support_list { + u8 intel_mode_number[0]; + u16 mode_list_length; +} __packed; + /* * Block 9 - SRD Feature Block */ -- 2.50.1