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SCMI base protocol is mandatory, and once SCMI node is found in a device tree, the protocol handle (udevice) is unconditionally installed to the agent. Then basic information will be retrieved from SCMI server via the protocol and saved into the agent instance's local storage. Signed-off-by: AKASHI Takahiro <takahiro.akashi@linaro.org> Reviewed-by: Simon Glass <sjg@chromium.org> Reviewed-by: Etienne Carriere <etienne.carriere@foss.st.com>
116 lines
3.1 KiB
C
116 lines
3.1 KiB
C
/* SPDX-License-Identifier: GPL-2.0+ */
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/*
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* Copyright (C) 2019-2020 Linaro Limited.
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*/
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#ifndef _SCMI_AGENT_UCLASS_H
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#define _SCMI_AGENT_UCLASS_H
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#include <scmi_protocols.h>
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#include <dm/device.h>
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struct scmi_msg;
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struct scmi_channel;
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/**
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* struct scmi_agent_priv - private data maintained by agent instance
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* @version: Version
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* @num_agents: Number of agents
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* @num_protocols: Number of protocols
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* @impl_version: Implementation version
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* @protocols: Array of protocol IDs
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* @vendor: Vendor name
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* @sub_vendor: Sub-vendor name
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* @agent_name: Agent name
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* @agent_id: Identifier of agent
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* @base_dev: SCMI base protocol device
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* @clock_dev: SCMI clock protocol device
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* @resetdom_dev: SCMI reset domain protocol device
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* @voltagedom_dev: SCMI voltage domain protocol device
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*/
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struct scmi_agent_priv {
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u32 version;
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u32 num_agents;
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u32 num_protocols;
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u32 impl_version;
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u8 *protocols;
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u8 *vendor;
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u8 *sub_vendor;
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u8 *agent_name;
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u32 agent_id;
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struct udevice *base_dev;
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struct udevice *clock_dev;
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struct udevice *resetdom_dev;
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struct udevice *voltagedom_dev;
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};
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static inline u32 scmi_version(struct udevice *dev)
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{
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return ((struct scmi_agent_priv *)dev_get_uclass_plat(dev))->version;
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}
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static inline u32 scmi_num_agents(struct udevice *dev)
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{
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return ((struct scmi_agent_priv *)dev_get_uclass_plat(dev))->num_agents;
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}
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static inline u32 scmi_num_protocols(struct udevice *dev)
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{
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return ((struct scmi_agent_priv *)dev_get_uclass_plat(dev))->num_protocols;
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}
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static inline u32 scmi_impl_version(struct udevice *dev)
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{
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return ((struct scmi_agent_priv *)dev_get_uclass_plat(dev))->impl_version;
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}
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static inline u8 *scmi_protocols(struct udevice *dev)
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{
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return ((struct scmi_agent_priv *)dev_get_uclass_plat(dev))->protocols;
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}
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static inline u8 *scmi_vendor(struct udevice *dev)
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{
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return ((struct scmi_agent_priv *)dev_get_uclass_plat(dev))->vendor;
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}
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static inline u8 *scmi_sub_vendor(struct udevice *dev)
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{
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return ((struct scmi_agent_priv *)dev_get_uclass_plat(dev))->sub_vendor;
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}
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static inline u8 *scmi_agent_name(struct udevice *dev)
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{
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return ((struct scmi_agent_priv *)dev_get_uclass_plat(dev))->agent_name;
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}
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static inline u32 scmi_agent_id(struct udevice *dev)
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{
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return ((struct scmi_agent_priv *)dev_get_uclass_plat(dev))->agent_id;
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}
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/**
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* struct scmi_transport_ops - The functions that a SCMI transport layer must implement.
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*/
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struct scmi_agent_ops {
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/*
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* of_get_channel - Get SCMI channel from SCMI agent device tree node
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*
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* @dev: SCMI agent device using the transport
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* @protocol: SCMI protocol device using the transport
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* @channel: Output reference to SCMI channel upon success
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* Return 0 upon success and a negative errno on failure
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*/
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int (*of_get_channel)(struct udevice *dev, struct udevice *protocol,
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struct scmi_channel **channel);
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/*
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* process_msg - Request transport to get the SCMI message processed
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*
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* @dev: SCMI agent device using the transport
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* @msg: SCMI message to be transmitted
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*/
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int (*process_msg)(struct udevice *dev, struct scmi_channel *channel,
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struct scmi_msg *msg);
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};
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#endif /* _SCMI_TRANSPORT_UCLASS_H */
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