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firmware: scmi: framework for installing additional protocols

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This framework allows SCMI protocols to be installed and bound to the agent
so that the agent can manage and utilize them later.

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>
This commit is contained in:
AKASHI Takahiro
2023-10-11 19:06:58 +09:00
committed by Tom Rini
parent bb8079ae38
commit 55de62baa1
3 changed files with 116 additions and 4 deletions
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15
include/scmi_agent-uclass.h
View File

@@ -5,10 +5,23 @@
#ifndef _SCMI_AGENT_UCLASS_H
#define _SCMI_AGENT_UCLASS_H
struct udevice;
#include <dm/device.h>
struct scmi_msg;
struct scmi_channel;
/**
* struct scmi_agent_priv - private data maintained by agent instance
* @clock_dev: SCMI clock protocol device
* @resetdom_dev: SCMI reset domain protocol device
* @voltagedom_dev: SCMI voltage domain protocol device
*/
struct scmi_agent_priv {
struct udevice *clock_dev;
struct udevice *resetdom_dev;
struct udevice *voltagedom_dev;
};
/**
* struct scmi_transport_ops - The functions that a SCMI transport layer must implement.
*/

14
include/scmi_agent.h
View File

@@ -10,6 +10,7 @@
#ifndef SCMI_AGENT_H
#define SCMI_AGENT_H
#include <scmi_protocols.h>
#include <asm/types.h>
struct udevice;
@@ -74,6 +75,19 @@ int devm_scmi_of_get_channel(struct udevice *dev);
*/
int devm_scmi_process_msg(struct udevice *dev, struct scmi_msg *msg);
/**
* scmi_get_protocol() - get protocol instance
*
* @dev: SCMI agent device
* @id: SCMI protocol ID
*
* Obtain the device instance for given protocol ID, @id.
*
* Return: Pointer to the device if found, null otherwise
*/
struct udevice *scmi_get_protocol(struct udevice *dev,
enum scmi_std_protocol id);
/**
* scmi_to_linux_errno() - Convert an SCMI error code into a Linux errno code
*