From f89f9c56e7372b2dda144f83dce61311b298c559 Mon Sep 17 00:00:00 2001 From: Sven Peter Date: Mon, 25 Oct 2021 08:22:04 +0200 Subject: mailbox: apple: Add driver for Apple mailboxes Apple SoCs such as the M1 come with various co-processors. Mailboxes are used to communicate with those. This driver adds support for two variants of those mailboxes. Signed-off-by: Sven Peter Signed-off-by: Jassi Brar --- include/linux/apple-mailbox.h | 19 +++++++++++++++++++ 1 file changed, 19 insertions(+) create mode 100644 include/linux/apple-mailbox.h (limited to 'include/linux') diff --git a/include/linux/apple-mailbox.h b/include/linux/apple-mailbox.h new file mode 100644 index 000000000000..720fbb70294a --- /dev/null +++ b/include/linux/apple-mailbox.h @@ -0,0 +1,19 @@ +/* SPDX-License-Identifier: GPL-2.0-only OR MIT */ +/* + * Apple mailbox message format + * + * Copyright (C) 2021 The Asahi Linux Contributors + */ + +#ifndef _LINUX_APPLE_MAILBOX_H_ +#define _LINUX_APPLE_MAILBOX_H_ + +#include + +/* encodes a single 96bit message sent over the single channel */ +struct apple_mbox_msg { + u64 msg0; + u32 msg1; +}; + +#endif -- cgit v1.2.3