daniel/MontaukOS
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feat: expand Intel GPU display management

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daniel committed 2026-07-30 17:12:08 +01:00
1 parent 86de3400a9
commit 471903bafb
25 files changed
+1715 -16
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kernel/src/Api/BuildNo.hpp
+1 -1
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@@ -12,4 +12,4 @@
#pragma once
#define MONTAUK_BUILD_NUMBER 20
#define MONTAUK_BUILD_NUMBER 24
kernel/src/Api/Graphics.hpp
+16
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@@ -96,6 +96,22 @@ namespace montauk::abi {
return GPU::Flip((int)index, (flags & 1) != 0);
}
static int64_t Sys_DisplayInfo(DisplayInfo* out) {
return Drivers::Graphics::IntelGPU::GetDisplayInfo(out) ? 0 : -1;
}
static int64_t Sys_DisplayModes(DisplayModeInfo* out, int maxCount) {
return Drivers::Graphics::IntelGPU::GetDisplayModes(out, maxCount);
}
static int64_t Sys_DisplaySetMode(int modeIndex) {
return Drivers::Graphics::IntelGPU::SetDisplayMode(modeIndex);
}
static int64_t Sys_DisplayBrightness(int percent) {
return Drivers::Graphics::IntelGPU::Brightness(percent);
}
static uint64_t Sys_TermSize() {
// If the process is redirected to a GUI terminal, return those dimensions
auto* proc = Sched::GetCurrentProcessPtr();
kernel/src/Api/Syscall.cpp
+14
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@@ -150,6 +150,20 @@ namespace montauk::abi {
return (int64_t)Sys_FbMap();
case SYS_FBFLIP:
return Sys_FbFlip(frame->arg1, frame->arg2);
case SYS_DISPLAYINFO:
if (!UserMemory::Writable<DisplayInfo>(frame->arg1)) return -1;
return Sys_DisplayInfo((DisplayInfo*)frame->arg1);
case SYS_DISPLAYMODES:
// The Intel driver publishes at most 32 modes. Bounding this
// here also keeps the userspace range calculation overflow-free.
if ((int64_t)frame->arg2 < 0 || frame->arg2 > 32) return -1;
if (!UserMemory::Range(frame->arg1,
(uint64_t)frame->arg2 * sizeof(DisplayModeInfo), true)) return -1;
return Sys_DisplayModes((DisplayModeInfo*)frame->arg1, (int)frame->arg2);
case SYS_DISPLAYSETMODE:
return Sys_DisplaySetMode((int)frame->arg1);
case SYS_DISPLAYBRIGHTNESS:
return Sys_DisplayBrightness((int)frame->arg1);
case SYS_GETEXECPATH:
if (!UserMemory::Range(frame->arg2 ? frame->arg1 : frame->arg1, frame->arg2, true)) return -1;
return Sys_GetExecPath((char*)frame->arg1, frame->arg2);
kernel/src/Api/Syscall.hpp
+51
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@@ -291,6 +291,12 @@ namespace montauk::abi {
static constexpr uint64_t SYS_STAT = 152;
static constexpr uint64_t SYS_SETUNIXTIME = 153;
/* Graphics.hpp -- display/modesetting control */
static constexpr uint64_t SYS_DISPLAYINFO = 154;
static constexpr uint64_t SYS_DISPLAYMODES = 155;
static constexpr uint64_t SYS_DISPLAYSETMODE = 156;
static constexpr uint64_t SYS_DISPLAYBRIGHTNESS = 157;
// Tunable parameters (for SYS_SDR_SETPARAM / SYS_SDR_GETPARAM).
static constexpr int SDR_PARAM_FREQ = 0; // center frequency, Hz
static constexpr int SDR_PARAM_SAMPLE_RATE = 1; // sample rate, Hz
@@ -351,6 +357,51 @@ namespace montauk::abi {
uint64_t userAddr; // filled by SYS_FBMAP (0 until mapped)
};
enum DisplayConnectorType : uint8_t {
DISPLAY_CONNECTOR_UNKNOWN = 0,
DISPLAY_CONNECTOR_EDP = 1,
DISPLAY_CONNECTOR_DP = 2,
DISPLAY_CONNECTOR_HDMI = 3,
DISPLAY_CONNECTOR_DVI = 4,
DISPLAY_CONNECTOR_VGA = 5,
DISPLAY_CONNECTOR_LVDS = 6,
};
static constexpr uint32_t DISPLAY_CAP_MODESET = 1u << 0;
static constexpr uint32_t DISPLAY_CAP_EDID = 1u << 1;
static constexpr uint32_t DISPLAY_CAP_BRIGHTNESS = 1u << 2;
static constexpr uint32_t DISPLAY_CAP_PAGE_FLIP = 1u << 3;
static constexpr uint32_t DISPLAY_CAP_VBLANK_IRQ = 1u << 4;
static constexpr uint32_t DISPLAY_CAP_SAFE_SWITCH = 1u << 5;
static constexpr uint32_t DISPLAY_MODE_PREFERRED = 1u << 0;
static constexpr uint32_t DISPLAY_MODE_CURRENT = 1u << 1;
static constexpr uint32_t DISPLAY_MODE_DRIVER_VALID = 1u << 2;
struct DisplayModeInfo {
uint32_t width;
uint32_t height;
uint32_t refreshMilliHz;
uint32_t pixelClockKHz;
uint32_t flags;
uint32_t _pad;
};
struct DisplayInfo {
uint32_t capabilities;
uint32_t modeCount;
int32_t currentMode;
int32_t brightness; // 0..100, or -1 when unavailable
uint16_t deviceId;
uint8_t generation;
uint8_t connectorType;
uint8_t connected;
uint8_t _pad0[3];
char gpuName[64];
char connectorName[32];
char monitorName[64];
};
struct SysInfo {
char osName[32];
char osVersion[32];