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firmware: arm_scmi: Extend protocol registration interfaces

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Extend common protocol registration routines and provide some new generic
protocols get/put helpers that can track protocols usage and automatically
perform the proper initialization and de-initialization on demand when
required.

Convert all standard protocols to use this new registration scheme while
keeping them all still using the usual initialization logic bound to SCMI
devices probing.

Link: https://lore.kernel.org/r/20210316124903.35011-2-cristian.marussi@arm.com
Tested-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: Cristian Marussi <cristian.marussi@arm.com>
Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>
This commit is contained in:
Cristian Marussi 2021-03-16 12:48:26 +00:00 • committed by Sudeep Holla
parent 908a4f778d
commit 48dc16e2e5
12 changed files with 334 additions and 45 deletions
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8
include/linux/scmi_protocol.h
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@ -2,7 +2,7 @@
/*
* SCMI Message Protocol driver header
*
* Copyright (C) 2018 ARM Ltd.
* Copyright (C) 2018-2021 ARM Ltd.
*/
#ifndef _LINUX_SCMI_PROTOCOL_H
@ -712,9 +712,9 @@ static inline void scmi_driver_unregister(struct scmi_driver *driver) {}
#define module_scmi_driver(__scmi_driver) \
module_driver(__scmi_driver, scmi_register, scmi_unregister)
typedef int (*scmi_prot_init_fn_t)(struct scmi_handle *);
int scmi_protocol_register(int protocol_id, scmi_prot_init_fn_t fn);
void scmi_protocol_unregister(int protocol_id);
struct scmi_protocol;
int scmi_protocol_register(const struct scmi_protocol *proto);
void scmi_protocol_unregister(const struct scmi_protocol *proto);
/* SCMI Notification API - Custom Event Reports */
enum scmi_notification_events {