Commit 15e1f2bc authored by Dong Aisheng's avatar Dong Aisheng Committed by Shawn Guo
Browse files

firmware: imx: add misc svc support 



Add SCU MISC SVC support which provides misc control get/set functions.

Cc: Shawn Guo <shawnguo@kernel.org>
Reviewed-by: default avatarSascha Hauer <s.hauer@pengutronix.de>
Signed-off-by: default avatarDong Aisheng <aisheng.dong@nxp.com>
Signed-off-by: default avatarShawn Guo <shawnguo@kernel.org>
parent edbee095

drivers/firmware/imx/Makefile

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# SPDX-License-Identifier: GPL-2.0

obj-$(CONFIG_IMX_SCU)	+= imx-scu.o
 
obj-$(CONFIG_IMX_SCU)	+= imx-scu.o misc.o

drivers/firmware/imx/misc.c

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// SPDX-License-Identifier: GPL-2.0+

/*

 * Copyright (C) 2016 Freescale Semiconductor, Inc.

 * Copyright 2017~2018 NXP

 *  Author: Dong Aisheng <aisheng.dong@nxp.com>

 *

 * 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 {

	struct imx_sc_rpc_msg hdr;

	u32 ctrl;

	u32 val;

	u16 resource;

} __packed;



struct imx_sc_msg_req_misc_get_ctrl {

	struct imx_sc_rpc_msg hdr;

	u32 ctrl;

	u16 resource;

} __packed;



struct imx_sc_msg_resp_misc_get_ctrl {

	struct imx_sc_rpc_msg hdr;

	u32 val;

} __packed;



/*

 * 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)

{

	struct imx_sc_msg_req_misc_set_ctrl msg;

	struct imx_sc_rpc_msg *hdr = &msg.hdr;



	hdr->ver = IMX_SC_RPC_VERSION;

	hdr->svc = (uint8_t)IMX_SC_RPC_SVC_MISC;

	hdr->func = (uint8_t)IMX_SC_MISC_FUNC_SET_CONTROL;

	hdr->size = 4;



	msg.ctrl = ctrl;

	msg.val = val;

	msg.resource = resource;



	return imx_scu_call_rpc(ipc, &msg, true);

}

EXPORT_SYMBOL(imx_sc_misc_set_control);



/*

 * 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)

{

	struct imx_sc_msg_req_misc_get_ctrl msg;

	struct imx_sc_msg_resp_misc_get_ctrl *resp;

	struct imx_sc_rpc_msg *hdr = &msg.hdr;

	int ret;



	hdr->ver = IMX_SC_RPC_VERSION;

	hdr->svc = (uint8_t)IMX_SC_RPC_SVC_MISC;

	hdr->func = (uint8_t)IMX_SC_MISC_FUNC_GET_CONTROL;

	hdr->size = 3;



	msg.ctrl = ctrl;

	msg.resource = resource;



	ret = imx_scu_call_rpc(ipc, &msg, true);

	if (ret)

		return ret;



	resp = (struct imx_sc_msg_resp_misc_get_ctrl *)&msg;

	if (val != NULL)

		*val = resp->val;



	return 0;

}

EXPORT_SYMBOL(imx_sc_misc_get_control);

include/linux/firmware/imx/sci.h

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@@ -13,4 +13,5 @@ 
#include <linux/firmware/imx/ipc.h>

#include <linux/firmware/imx/types.h>



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

#endif /* _SC_SCI_H */

include/linux/firmware/imx/svc/misc.h

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/* SPDX-License-Identifier: GPL-2.0+ */

/*

 * Copyright (C) 2016 Freescale Semiconductor, Inc.

 * Copyright 2017~2018 NXP

 *

 * Header file containing the public API for the System Controller (SC)

 * Miscellaneous (MISC) function.

 *

 * MISC_SVC (SVC) Miscellaneous Service

 *

 * Module for the Miscellaneous (MISC) service.

 */



#ifndef _SC_MISC_API_H

#define _SC_MISC_API_H



#include <linux/firmware/imx/sci.h>



/*

 * This type is used to indicate RPC MISC function calls.

 */

enum imx_misc_func {

	IMX_SC_MISC_FUNC_UNKNOWN = 0,

	IMX_SC_MISC_FUNC_SET_CONTROL = 1,

	IMX_SC_MISC_FUNC_GET_CONTROL = 2,

	IMX_SC_MISC_FUNC_SET_MAX_DMA_GROUP = 4,

	IMX_SC_MISC_FUNC_SET_DMA_GROUP = 5,

	IMX_SC_MISC_FUNC_SECO_IMAGE_LOAD = 8,

	IMX_SC_MISC_FUNC_SECO_AUTHENTICATE = 9,

	IMX_SC_MISC_FUNC_DEBUG_OUT = 10,

	IMX_SC_MISC_FUNC_WAVEFORM_CAPTURE = 6,

	IMX_SC_MISC_FUNC_BUILD_INFO = 15,

	IMX_SC_MISC_FUNC_UNIQUE_ID = 19,

	IMX_SC_MISC_FUNC_SET_ARI = 3,

	IMX_SC_MISC_FUNC_BOOT_STATUS = 7,

	IMX_SC_MISC_FUNC_BOOT_DONE = 14,

	IMX_SC_MISC_FUNC_OTP_FUSE_READ = 11,

	IMX_SC_MISC_FUNC_OTP_FUSE_WRITE = 17,

	IMX_SC_MISC_FUNC_SET_TEMP = 12,

	IMX_SC_MISC_FUNC_GET_TEMP = 13,

	IMX_SC_MISC_FUNC_GET_BOOT_DEV = 16,

	IMX_SC_MISC_FUNC_GET_BUTTON_STATUS = 18,

};



/*

 * Control Functions

 */



int imx_sc_misc_set_control(struct imx_sc_ipc *ipc, u32 resource,

			    u8 ctrl, u32 val);



int imx_sc_misc_get_control(struct imx_sc_ipc *ipc, u32 resource,

			    u8 ctrl, u32 *val);



#endif /* _SC_MISC_API_H */