firmware: arm_scmi: Make SCMI transports configurable
Add configuration options to be able to select which SCMI transports have
to be compiled into the SCMI stack.
Mailbox and SMC are by default enabled if their related dependencies are
satisfied.
While doing that move all SCMI related config options in their own
dedicated submenu.
Link: https://lore.kernel.org/r/20210803131024.40280-9-cristian.marussi@arm.com
Signed-off-by: Cristian Marussi <cristian.marussi@arm.com>
Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>
diff --git a/drivers/firmware/arm_scmi/driver.c b/drivers/firmware/arm_scmi/driver.c
index 5ff0bcbb..d20e676 100644
--- a/drivers/firmware/arm_scmi/driver.c
+++ b/drivers/firmware/arm_scmi/driver.c
@@ -1933,10 +1933,10 @@ ATTRIBUTE_GROUPS(versions);
/* Each compatible listed below must have descriptor associated with it */
static const struct of_device_id scmi_of_match[] = {
-#ifdef CONFIG_MAILBOX
+#ifdef CONFIG_ARM_SCMI_TRANSPORT_MAILBOX
{ .compatible = "arm,scmi", .data = &scmi_mailbox_desc },
#endif
-#ifdef CONFIG_HAVE_ARM_SMCCC_DISCOVERY
+#ifdef CONFIG_ARM_SCMI_TRANSPORT_SMC
{ .compatible = "arm,scmi-smc", .data = &scmi_smc_desc},
#endif
{ /* Sentinel */ },
@@ -2008,6 +2008,8 @@ static int __init scmi_driver_init(void)
scmi_bus_init();
+ BUILD_BUG_ON(!IS_ENABLED(CONFIG_ARM_SCMI_HAVE_TRANSPORT));
+
/* Initialize any compiled-in transport which provided an init/exit */
ret = scmi_transports_init();
if (ret)
