Kernel/Graphics: Add basic support for Intel native accelerator

We simply modeset the resolution after determining the preferred
resolution after getting the EDID from the attached display.

1 files changed, 85 insertions, 0 deletions

diff --git a/Kernel/Graphics/Definitions.h b/Kernel/Graphics/Definitions.h
new file mode 100644
index 0000000000..a96e051b13
--- /dev/null
+++ b/Kernel/Graphics/Definitions.h
@@ -0,0 +1,85 @@
+/*
+ * Copyright (c) 2021, Liav A. <liavalb@hotmail.co.il>
+ *
+ * SPDX-License-Identifier: BSD-2-Clause
+ */
+
+#pragma once
+
+#include <AK/Types.h>
+
+namespace Kernel::Graphics {
+
+struct Timings {
+    size_t blanking_start() const
+    {
+        return active;
+    }
+    size_t blanking_end() const
+    {
+        return total;
+    }
+
+    size_t active;
+    size_t sync_start;
+    size_t sync_end;
+    size_t total;
+};
+
+struct Modesetting {
+    size_t pixel_clock_in_khz;
+    Timings horizontal;
+    Timings vertical;
+};
+
+struct [[gnu::packed]] StandardTimings {
+    u8 resolution;
+    u8 frequency;
+};
+
+struct [[gnu::packed]] DetailTimings {
+    u16 pixel_clock;
+    u8 horizontal_active;
+    u8 horizontal_blank;
+    u8 horizontal_active_blank_msb;
+    u8 vertical_active;
+    u8 vertical_blank;
+    u8 vertical_active_blank_msb;
+    u8 horizontal_sync_offset;
+    u8 horizontal_sync_pulse;
+    u8 vertical_sync;
+    u8 sync_msb;
+    u8 dimension_width;
+    u8 dimension_height;
+    u8 dimension_msb;
+    u8 horizontal_border;
+    u8 vertical_border;
+    u8 features;
+};
+
+struct [[gnu::packed]] VideoInfoBlock {
+    u64 padding;
+    u16 manufacture_id;
+    u16 product_id;
+    u32 serial_number;
+    u8 manufacture_week;
+    u8 manufacture_year;
+    u8 edid_version;
+    u8 edid_revision;
+    u8 video_input_type;
+    u8 max_horizontal_size;
+    u8 max_vertical_size;
+    u8 gama_factor;
+    u8 dpms_flags;
+    u8 chroma_info[10];
+    u8 established_timing[2];
+    u8 manufacture_reserved_timings;
+    StandardTimings timings[8];
+    DetailTimings details[4];
+    u8 unused;
+    u8 checksum;
+};
+
+static_assert(sizeof(VideoInfoBlock) == 128);
+
+}