e393071a9b
This will be used to annotate which Generation is being used for each Intel iGPU we discover.
55 lines
942 B
C++
55 lines
942 B
C++
/*
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* Copyright (c) 2022, Liav A. <liavalb@hotmail.co.il>
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#pragma once
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#include <AK/Types.h>
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namespace Kernel::IntelGraphics {
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enum class Generation {
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Gen4,
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Gen9,
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};
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struct PLLSettings;
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struct PLLParameterLimit {
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size_t min, max;
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};
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struct PLLMaxSettings {
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PLLParameterLimit dot_clock, vco, n, m, m1, m2, p, p1, p2;
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};
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struct PLLSettings {
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bool is_valid() const { return (n != 0 && m1 != 0 && m2 != 0 && p1 != 0 && p2 != 0); }
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u64 compute_dot_clock(u64 refclock) const
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{
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return (refclock * (5 * m1 + m2) / n) / (p1 * p2);
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}
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u64 compute_vco(u64 refclock) const
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{
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return refclock * (5 * m1 + m2) / n;
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}
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u64 compute_m() const
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{
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return 5 * m1 + m2;
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}
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u64 compute_p() const
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{
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return p1 * p2;
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}
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u64 n { 0 };
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u64 m1 { 0 };
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u64 m2 { 0 };
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u64 p1 { 0 };
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u64 p2 { 0 };
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};
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}
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