99 lines
3.1 KiB
C
99 lines
3.1 KiB
C
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/* SPDX-License-Identifier: GPL-2.0 */
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/*
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* Copyright (C) STMicroelectronics 2018 - All Rights Reserved
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* Author: Fabien Dessenne <fabien.dessenne@st.com> for STMicroelectronics.
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*/
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#ifndef _RPROC_SRM_CORE_H_
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#define _RPROC_SRM_CORE_H_
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/**
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* Message type used in resource manager rpmsg:
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* RPROC_SRM_MSG_GETCONFIG: Request to get the configuration of a resource
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* RPROC_SRM_MSG_SETCONFIG: Request to set the configuration of a resource
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* RPROC_SRM_MSG_ERROR: Error when processing a request
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*/
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#define RPROC_SRM_MSG_GETCONFIG 0x00
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#define RPROC_SRM_MSG_SETCONFIG 0x01
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#define RPROC_SRM_MSG_ERROR 0xFF
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/**
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* Resource type used in resource manager rpmsg:
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* RPROC_SRM_RSC_CLOCK: clock resource
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* RPROC_SRM_RSC_REGU: regulator resource
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*/
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#define RPROC_SRM_RSC_CLOCK 0x00
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#define RPROC_SRM_RSC_REGU 0x01
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/**
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* struct clock_cfg - clock configuration used in resource manager rpmsg
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* @index: clock index
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* @name: clock name
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* @rate: clock rate request (in SetConfig message) or current status (in
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* GetConfig message)
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*/
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struct clock_cfg {
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u32 index;
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u8 name[16];
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u32 rate;
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};
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/**
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* struct regu_cfg - regu configuration used in resource manager rpmsg
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* @index: regulator index
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* @name: regulator name
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* @enable: regulator enable/disable request (in SetConfig message) or
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* current status (in GetConfig message)
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* @curr_voltage_mv: current regulator voltage in mV (meaningful in
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* SetConfig message)
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* @min_voltage_mv: regulator min voltage request in mV (meaningful in
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* SetConfig message)
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* @max_voltage_mv: regulator max voltage request in mV (meaningful in
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* SetConfig message)
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*/
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struct regu_cfg {
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u32 index;
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u8 name[16];
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u32 enable;
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u32 curr_voltage_mv;
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u32 min_voltage_mv;
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u32 max_voltage_mv;
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};
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/**
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* struct rpmsg_srm_msg - message structure used between processors to
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* dynamically update resources configuration
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* @message_type: type of the message: see RPROC_SRM_MSG*
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* @device_id: an identifier specifying the device owning the resources.
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* This is implementation dependent. As example it may be the
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* device name or the device address.
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* @rsc_type: the type of the resource for which the configuration applies:
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* see RPROC_SRM_RSC*
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* @clock_cfg: clock config - relevant if &rsc_type is RPROC_SRM_RSC_CLOCK
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* @regu_cfg: regulator config - relevant if &rsc_type is RPROC_SRM_RSC_REGU
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*/
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struct rpmsg_srm_msg {
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u32 message_type;
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u8 device_id[32];
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u32 rsc_type;
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union {
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struct clock_cfg clock_cfg;
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struct regu_cfg regu_cfg;
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};
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};
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struct rpmsg_srm_msg_desc {
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struct rpmsg_endpoint *ept;
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struct rpmsg_srm_msg *msg;
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};
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struct rproc_srm_core;
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int rproc_srm_core_register_notifier(struct rproc_srm_core *core,
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struct notifier_block *nb);
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int rproc_srm_core_unregister_notifier(struct rproc_srm_core *core,
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struct notifier_block *nb);
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int rpmsg_srm_send(struct rpmsg_endpoint *ept, struct rpmsg_srm_msg *msg);
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#endif
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