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firmware: scmi: support to manage SCMI protocol drivers with a linker-genetated array

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U_BOOT_SCMI_PROTO_DRIVER macro is used to add a SCMI protocol driver to
scmi_proto_driver list. scmi_proto_driver_get() function can be used to
match a SCMI protocol id and its driver.

Signed-off-by: Alice Guo <alice.guo@nxp.com>
This commit is contained in:
Alice Guo 2025-04-28 18:37:24 +08:00 committed by Fabio Estevam
parent 0c8a89d252
commit b4f3fab643
2 changed files with 31 additions and 0 deletions
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16
drivers/firmware/scmi/scmi_agent-uclass.c
View File

@ -352,6 +352,22 @@ static int scmi_fill_base_info(struct udevice *agent, struct udevice *dev)
return 0;
}
static struct driver *scmi_proto_driver_get(unsigned int proto_id)
{
struct scmi_proto_driver *start, *entry;
int n_ents;
start = ll_entry_start(struct scmi_proto_driver, scmi_proto_driver);
n_ents = ll_entry_count(struct scmi_proto_driver, scmi_proto_driver);
for (entry = start; entry != start + n_ents; entry++) {
if (entry->match->proto_id == proto_id)
return entry->driver;
}
return NULL;
}
/*
* SCMI agent devices binds devices of various uclasses depending on
* the FDT description. scmi_bind_protocol() is a generic bind sequence

15
include/scmi_agent-uclass.h
View File

@ -115,4 +115,19 @@ struct scmi_agent_ops {
struct scmi_msg *msg);
};
struct scmi_proto_match {
unsigned int proto_id;
};
struct scmi_proto_driver {
struct driver *driver;
const struct scmi_proto_match *match;
};
#define U_BOOT_SCMI_PROTO_DRIVER(__name, __match) \
ll_entry_declare(struct scmi_proto_driver, __name, scmi_proto_driver) = { \
.driver = llsym(struct driver, __name, driver), \
.match = __match, \
}
#endif /* _SCMI_TRANSPORT_UCLASS_H */