mirror of
https://github.com/RGBCube/serenity
synced 2025-10-31 07:52:45 +00:00
9ee098b119
Like the HID, Audio and Storage subsystem, the Graphics subsystem (which
handles GPUs technically) exposes unix device files (typically in /dev).
To ensure consistency across the repository, move all related files to a
new directory under Kernel/Devices called "GPU".
Also remove the redundant "GPU" word from the VirtIO driver directory,
and the word "Graphics" from GraphicsManagement.{h,cpp} filenames.
55 lines
942 B
C++
55 lines
942 B
C++
/*
|
|
* Copyright (c) 2022, Liav A. <liavalb@hotmail.co.il>
|
|
*
|
|
* SPDX-License-Identifier: BSD-2-Clause
|
|
*/
|
|
|
|
#pragma once
|
|
|
|
#include <AK/Types.h>
|
|
|
|
namespace Kernel::IntelGraphics {
|
|
|
|
enum class Generation {
|
|
Gen4,
|
|
Gen9,
|
|
};
|
|
|
|
struct PLLSettings;
|
|
|
|
struct PLLParameterLimit {
|
|
size_t min, max;
|
|
};
|
|
|
|
struct PLLMaxSettings {
|
|
PLLParameterLimit dot_clock, vco, n, m, m1, m2, p, p1, p2;
|
|
};
|
|
|
|
struct PLLSettings {
|
|
bool is_valid() const { return (n != 0 && m1 != 0 && m2 != 0 && p1 != 0 && p2 != 0); }
|
|
u64 compute_dot_clock(u64 refclock) const
|
|
{
|
|
return (refclock * (5 * m1 + m2) / n) / (p1 * p2);
|
|
}
|
|
|
|
u64 compute_vco(u64 refclock) const
|
|
{
|
|
return refclock * (5 * m1 + m2) / n;
|
|
}
|
|
|
|
u64 compute_m() const
|
|
{
|
|
return 5 * m1 + m2;
|
|
}
|
|
|
|
u64 compute_p() const
|
|
{
|
|
return p1 * p2;
|
|
}
|
|
u64 n { 0 };
|
|
u64 m1 { 0 };
|
|
u64 m2 { 0 };
|
|
u64 p1 { 0 };
|
|
u64 p2 { 0 };
|
|
};
|
|
}
|