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Kernel/Graphics: Override first byte of the EDID in Intel Native driver

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Liav A 2022-03-05 22:36:31 +02:00 • committed by Andreas Kling
parent 7aa63ddd00
commit ed5623f40f
1 changed files with 4 additions and 0 deletions
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4
Kernel/Graphics/Intel/NativeGraphicsAdapter.cpp
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@ -378,6 +378,10 @@ void IntelNativeGraphicsAdapter::gmbus_read_edid()
SpinlockLocker control_lock(m_control_lock); SpinlockLocker control_lock(m_control_lock);
gmbus_write(DDC2_I2C_ADDRESS, 0); gmbus_write(DDC2_I2C_ADDRESS, 0);
gmbus_read(DDC2_I2C_ADDRESS, (u8*)&m_crt_edid_bytes, sizeof(m_crt_edid_bytes)); gmbus_read(DDC2_I2C_ADDRESS, (u8*)&m_crt_edid_bytes, sizeof(m_crt_edid_bytes));
// FIXME: It seems like the returned EDID is almost correct,
// but the first byte is set to 0xD0 instead of 0x00.
// For now, this "hack" works well enough.
m_crt_edid_bytes[0] = 0x0;
} }
if (auto parsed_edid = EDID::Parser::from_bytes({ m_crt_edid_bytes, sizeof(m_crt_edid_bytes) }); !parsed_edid.is_error()) { if (auto parsed_edid = EDID::Parser::from_bytes({ m_crt_edid_bytes, sizeof(m_crt_edid_bytes) }); !parsed_edid.is_error()) {
m_crt_edid = parsed_edid.release_value(); m_crt_edid = parsed_edid.release_value();