linux/drivers/firmware/imx/misc.c

// SPDX-License-Identifier: GPL-2.0+
/*
 * Copyright (C) 2016 Freescale Semiconductor, Inc.
 * Copyright 2017~2018 NXP
 *  Author: Dong Aisheng <[email protected]>
 *
 * File containing client-side RPC functions for the MISC service. These
 * function are ported to clients that communicate to the SC.
 *
 */

#include <linux/firmware/imx/svc/misc.h>

struct imx_sc_msg_req_misc_set_ctrl { … } __packed __aligned(…);

struct imx_sc_msg_req_cpu_start { … } __packed __aligned(…);

struct imx_sc_msg_req_misc_get_ctrl { … } __packed __aligned(…);

struct imx_sc_msg_resp_misc_get_ctrl { … } __packed __aligned(…);

/*
 * This function sets a miscellaneous control value.
 *
 * @param[in]     ipc         IPC handle
 * @param[in]     resource    resource the control is associated with
 * @param[in]     ctrl        control to change
 * @param[in]     val         value to apply to the control
 *
 * @return Returns 0 for success and < 0 for errors.
 */

int imx_sc_misc_set_control(struct imx_sc_ipc *ipc, u32 resource,
			    u8 ctrl, u32 val)
{ … }
EXPORT_SYMBOL(…);

/*
 * This function gets a miscellaneous control value.
 *
 * @param[in]     ipc         IPC handle
 * @param[in]     resource    resource the control is associated with
 * @param[in]     ctrl        control to get
 * @param[out]    val         pointer to return the control value
 *
 * @return Returns 0 for success and < 0 for errors.
 */

int imx_sc_misc_get_control(struct imx_sc_ipc *ipc, u32 resource,
			    u8 ctrl, u32 *val)
{ … }
EXPORT_SYMBOL(…);

/*
 * This function starts/stops a CPU identified by @resource
 *
 * @param[in]     ipc         IPC handle
 * @param[in]     resource    resource the control is associated with
 * @param[in]     enable      true for start, false for stop
 * @param[in]     phys_addr   initial instruction address to be executed
 *
 * @return Returns 0 for success and < 0 for errors.
 */
int imx_sc_pm_cpu_start(struct imx_sc_ipc *ipc, u32 resource,
			bool enable, u64 phys_addr)
{ … }
EXPORT_SYMBOL(…);