Commit a7b1138b authored by Igor Skalkin's avatar Igor Skalkin Committed by Sudeep Holla
Browse files

firmware: arm_scmi: Make shmem support optional for transports 

Upcoming new SCMI transports won't need any kind of shared memory support.
Compile shmem.c only if a shmem based transport is selected.

Link: https://lore.kernel.org/r/20210803131024.40280-10-cristian.marussi@arm.com


Co-developed-by: default avatarPeter Hilber <peter.hilber@opensynergy.com>
Signed-off-by: default avatarIgor Skalkin <igor.skalkin@opensynergy.com>
[ Peter: Adapted patch for submission to upstream. ]
Signed-off-by: default avatarPeter Hilber <peter.hilber@opensynergy.com>
[ Cristian: Adapted patch/commit_msg to new SCMI Kconfig layout ]
Signed-off-by: default avatarCristian Marussi <cristian.marussi@arm.com>
Signed-off-by: default avatarSudeep Holla <sudeep.holla@arm.com>
parent e8419c24

drivers/firmware/arm_scmi/Kconfig

+8 −0
Original line number Diff line number Diff line
@@ -30,10 +30,17 @@ config ARM_SCMI_HAVE_TRANSPORT 
	  Used to trigger a build bug when trying to build SCMI without any

	  configured transport.



config ARM_SCMI_HAVE_SHMEM

	bool

	help

	  This declares whether a shared memory based transport for SCMI is

	  available.



config ARM_SCMI_TRANSPORT_MAILBOX

	bool "SCMI transport based on Mailbox"

	depends on MAILBOX

	select ARM_SCMI_HAVE_TRANSPORT

	select ARM_SCMI_HAVE_SHMEM

	default y

	help

	  Enable mailbox based transport for SCMI.
@@ -45,6 +52,7 @@ config ARM_SCMI_TRANSPORT_SMC 
	bool "SCMI transport based on SMC"

	depends on HAVE_ARM_SMCCC_DISCOVERY

	select ARM_SCMI_HAVE_TRANSPORT

	select ARM_SCMI_HAVE_SHMEM

	default y

	help

	  Enable SMC based transport for SCMI.

drivers/firmware/arm_scmi/Makefile

+1 −1
Original line number Diff line number Diff line 
# SPDX-License-Identifier: GPL-2.0-only

scmi-bus-y = bus.o

scmi-driver-y = driver.o notify.o

scmi-transport-y = shmem.o

scmi-transport-$(CONFIG_ARM_SCMI_HAVE_SHMEM) = shmem.o

scmi-transport-$(CONFIG_ARM_SCMI_TRANSPORT_MAILBOX) += mailbox.o

scmi-transport-$(CONFIG_ARM_SCMI_TRANSPORT_SMC) += smc.o

scmi-protocols-y = base.o clock.o perf.o power.o reset.o sensors.o system.o voltage.o