40 lines
1.1 KiB
C
40 lines
1.1 KiB
C
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/* SPDX-License-Identifier: GPL-2.0+ */
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/*
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* Interface for Surface ACPI Notify (SAN) driver.
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*
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* Provides access to discrete GPU notifications sent from ACPI via the SAN
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* driver, which are not handled by this driver directly.
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*
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* Copyright (C) 2019-2020 Maximilian Luz <luzmaximilian@gmail.com>
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*/
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#ifndef _LINUX_SURFACE_ACPI_NOTIFY_H
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#define _LINUX_SURFACE_ACPI_NOTIFY_H
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#include <linux/notifier.h>
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#include <linux/types.h>
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/**
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* struct san_dgpu_event - Discrete GPU ACPI event.
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* @category: Category of the event.
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* @target: Target ID of the event source.
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* @command: Command ID of the event.
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* @instance: Instance ID of the event source.
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* @length: Length of the event's payload data (in bytes).
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* @payload: Pointer to the event's payload data.
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*/
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struct san_dgpu_event {
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u8 category;
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u8 target;
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u8 command;
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u8 instance;
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u16 length;
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u8 *payload;
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};
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int san_client_link(struct device *client);
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int san_dgpu_notifier_register(struct notifier_block *nb);
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int san_dgpu_notifier_unregister(struct notifier_block *nb);
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#endif /* _LINUX_SURFACE_ACPI_NOTIFY_H */
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