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Kernel/Graphics: Ensure VMWare and VirtualBox EDIDs have manufacturer ID

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Liav A 2022-06-10 22:33:07 +03:00 • committed by Linus Groh
parent 3d36b194d1
commit 20c9e4c05c
7 changed files with 24 additions and 11 deletions
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14
Kernel/Graphics/DisplayConnector.cpp
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@ -112,11 +112,21 @@ void DisplayConnector::set_display_mode(Badge<GraphicsManagement>, DisplayMode m
}
}
ErrorOr<void> DisplayConnector::initialize_edid_for_generic_monitor()
ErrorOr<void> DisplayConnector::initialize_edid_for_generic_monitor(Optional<Array<u8, 3>> possible_manufacturer_id_string)
{
u8 raw_manufacturer_id[2] = { 0x0, 0x0 };
if (possible_manufacturer_id_string.has_value()) {
Array<u8, 3> manufacturer_id_string = possible_manufacturer_id_string.release_value();
u8 byte1 = (((static_cast<u8>(manufacturer_id_string[0]) - '@') & 0x1f) << 2) | (((static_cast<u8>(manufacturer_id_string[1]) - '@') >> 3) & 3);
u8 byte2 = ((static_cast<u8>(manufacturer_id_string[2]) - '@') & 0x1f) | (((static_cast<u8>(manufacturer_id_string[1]) - '@') << 5) & 0xe0);
Array<u8, 2> manufacturer_id_string_packed_bytes = { byte1, byte2 };
raw_manufacturer_id[0] = manufacturer_id_string_packed_bytes[1];
raw_manufacturer_id[1] = manufacturer_id_string_packed_bytes[0];
}
Array<u8, 128> virtual_monitor_edid = {
0x00, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0x00, /* header */
0x0, 0x0, /* manufacturer */
raw_manufacturer_id[1], raw_manufacturer_id[0], /* manufacturer */
0x00, 0x00, /* product code */
0x00, 0x00, 0x00, 0x00, /* serial number goes here */
0x01, /* week of manufacture */