linux/drivers/firmware/mtk-adsp-ipc.c

// SPDX-License-Identifier: GPL-2.0
/*
 * Copyright (c) 2022 MediaTek Corporation. All rights reserved.
 * Author: Allen-KH Cheng <[email protected]>
 */

#include <linux/firmware/mediatek/mtk-adsp-ipc.h>
#include <linux/kernel.h>
#include <linux/mailbox_client.h>
#include <linux/module.h>
#include <linux/platform_device.h>
#include <linux/slab.h>

static const char * const adsp_mbox_ch_names[MTK_ADSP_MBOX_NUM] = …;

/*
 * mtk_adsp_ipc_send - send ipc cmd to MTK ADSP
 *
 * @ipc: ADSP IPC handle
 * @idx: index of the mailbox channel
 * @msg: IPC cmd (reply or request)
 *
 * Returns zero for success from mbox_send_message
 * negative value for error
 */
int mtk_adsp_ipc_send(struct mtk_adsp_ipc *ipc, unsigned int idx, uint32_t msg)
{ … }
EXPORT_SYMBOL_GPL(…);

/*
 * mtk_adsp_ipc_recv - recv callback used by MTK ADSP mailbox
 *
 * @c: mbox client
 * @msg: message received
 *
 * Users of ADSP IPC will need to privde handle_reply and handle_request
 * callbacks.
 */
static void mtk_adsp_ipc_recv(struct mbox_client *c, void *msg)
{ … }

static int mtk_adsp_ipc_probe(struct platform_device *pdev)
{ … }

static void mtk_adsp_ipc_remove(struct platform_device *pdev)
{ … }

static struct platform_driver mtk_adsp_ipc_driver = …;
builtin_platform_driver(…) …;

MODULE_AUTHOR(…) …;
MODULE_DESCRIPTION(…) …;
MODULE_LICENSE(…) …;