vasilito
dc68054305
- Restore 29 recipe symlinks (libdrm, qtbase, dbus, sddm, pipewire, etc.) - Restore 33 patches (KDE, libdrm, mesa, pipewire, sddm, wireplumber) - Restore 20+ local/scripts (audit, lint, test, build helpers) - Restore src/cook/scheduler.rs, status.rs, gnu-config/ - Restore scripts/patch-inclusion-gate.sh, run_mini1.sh, validate-collision-log.sh - Recover TLC source from HEAD (was overwritten by 0.2.3 checkout) - Recover 11 local/docs plans from HEAD (were overwritten) - Recover qt6-wayland-smoke symlink from HEAD - Fix MOTD: remove garbled ASCII art, use clean text - Update version: 0.2.0 -> 0.2.4 in os-release, motd, config - Reduce filesystem_size: 1536 -> 512 MiB - Add ABSOLUTE RULE to AGENTS.md: never delete/ignore packages - Reduce pcid scheme log verbosity: info -> debug
63 lines
2.0 KiB
C
63 lines
2.0 KiB
C
/* SPDX-License-Identifier: GPL-2.0-only OR MIT */
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/*
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* Apple Silicon hardware tunable support
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*
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* Each tunable is a list with each entry containing a offset into the MMIO
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* region, a mask of bits to be cleared and a set of bits to be set. These
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* tunables are passed along by the previous boot stages and vary from device
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* to device such that they cannot be hardcoded in the individual drivers.
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*
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* Copyright (C) The Asahi Linux Contributors
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*/
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#ifndef _LINUX_SOC_APPLE_TUNABLE_H_
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#define _LINUX_SOC_APPLE_TUNABLE_H_
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#include <linux/device.h>
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#include <linux/types.h>
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/**
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* Struct to store an Apple Silicon hardware tunable.
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*
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* Each tunable is a list with each entry containing a offset into the MMIO
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* region, a mask of bits to be cleared and a set of bits to be set. These
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* tunables are passed along by the previous boot stages and vary from device
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* to device such that they cannot be hardcoded in the individual drivers.
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*
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* @param sz Number of [offset, mask, value] tuples stored in values.
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* @param values [offset, mask, value] array.
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*/
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struct apple_tunable {
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size_t sz;
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struct {
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u32 offset;
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u32 mask;
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u32 value;
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} values[] __counted_by(sz);
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};
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/**
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* Parse an array of hardware tunables from the device tree.
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*
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* @dev: Device node used for devm_kzalloc internally.
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* @np: Device node which contains the tunable array.
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* @name: Name of the device tree property which contains the tunables.
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* @res: Resource to which the tunables will be applied, used for bound checking
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*
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* @return: devres allocated struct on success or PTR_ERR on failure.
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*/
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struct apple_tunable *devm_apple_tunable_parse(struct device *dev,
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struct device_node *np,
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const char *name,
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struct resource *res);
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/**
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* Apply a previously loaded hardware tunable.
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*
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* @param regs: MMIO to which the tunable will be applied.
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* @param tunable: Pointer to the tunable.
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*/
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void apple_tunable_apply(void __iomem *regs, struct apple_tunable *tunable);
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#endif
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