From: Ville Syrjälä <ville.syrjala@xxxxxxxxxxxxxxx>
Define the contents of VBT block 5 (Generic Mode Table).
Details were mostly gleaned from some VBIOS sources.
There are apparently two variants of the block: ALM only
vs. MGM, defined here as bdb_generic_mode_table_alm
and bdb_generic_mode_table_mgm. And those are the only two
platforms where I've seen this block.
Signed-off-by: Ville Syrjälä <ville.syrjala@xxxxxxxxxxxxxxx>
---
drivers/gpu/drm/i915/display/intel_vbt_defs.h | 54 +++++++++++++++++++
1 file changed, 54 insertions(+)
diff --git a/drivers/gpu/drm/i915/display/intel_vbt_defs.h b/drivers/gpu/drm/i915/display/intel_vbt_defs.h
index c9ecf3b48999..f3478a20ff16 100644
--- a/drivers/gpu/drm/i915/display/intel_vbt_defs.h
+++ b/drivers/gpu/drm/i915/display/intel_vbt_defs.h
@@ -580,6 +580,60 @@ struct bdb_mode_support_list {
u16 mode_list_length;
} __packed;
+/*
+ * Block 5 - Generic Mode Table
+ */
+
+struct generic_mode_table {
+ u16 x_res;
+ u16 y_res;
+ u8 color_depths;
+ u8 refresh_rate[3];
+ u8 reserved;
+ u8 text_cols;
+ u8 text_rows;
+ u8 font_height;
+ u16 page_size;
+ u8 misc;
+} __packed;
+
+struct generic_mode_timings {
+ u32 dotclock_khz;
+ u16 hdisplay;
+ u16 htotal;
+ u16 hblank_start;
+ u16 hblank_end;
+ u16 hsync_start;
+ u16 hsync_end;
+ u16 vdisplay;
+ u16 vtotal;
+ u16 vblank_start;
+ u16 vblank_end;
+ u16 vsync_start;
+ u16 vsync_end;
+} __packed;
+
+struct generic_mode_timings_alm {
+ struct generic_mode_timings timings;
+ u8 wm_8bpp;
+ u8 burst_8bpp;
+ u8 wm_16bpp;
+ u8 burst_16bpp;
+ u8 wm_32bpp;
+ u8 burst_32bpp;
+} __packed;
+
+struct bdb_generic_mode_table_alm {
+ struct generic_mode_table table;
+ struct generic_mode_timings_alm timings[3];
+} __packed;
+
+struct bdb_generic_mode_table_mgm {
+ u16 mode_flag;
+ struct generic_mode_table table;
+ struct generic_mode_timings timings[3];
+} __packed;
+
/*
* Block 9 - SRD Feature Block
*/
--
2.43.2
