From: Ojaswin Mujoo Date: Wed, 21 Jul 2021 16:20:52 +0000 (+0530) Subject: staging: vchiq: Make creation of vchiq cdev optional X-Git-Tag: microblaze-v5.16~155^2~364 X-Git-Url: http://git.monstr.eu/?a=commitdiff_plain;h=2b5930fb3dc06d86149071f9dc8b6992cac1c3aa;p=linux-2.6-microblaze.git staging: vchiq: Make creation of vchiq cdev optional Before this commit, vchiq cdev (/dev/vchiq) was always created during platform initialization. Introduce a new Kconfig option CONFIG_VCHIQ_CDEV which determines if the cdev will be created or not. Reviewed-by: Stefan Wahren Signed-off-by: Ojaswin Mujoo Link: https://lore.kernel.org/r/846c424dd4aae14d1cc28c8f30877a06e2b7dd10.1626882325.git.ojaswin98@gmail.com Signed-off-by: Greg Kroah-Hartman --- diff --git a/drivers/staging/vc04_services/Kconfig b/drivers/staging/vc04_services/Kconfig index 4b886293f198..63caa6818d37 100644 --- a/drivers/staging/vc04_services/Kconfig +++ b/drivers/staging/vc04_services/Kconfig @@ -19,6 +19,16 @@ config BCM2835_VCHIQ Defaults to Y when the Broadcom Videocore services are included in the build, N otherwise. +if BCM2835_VCHIQ + +config VCHIQ_CDEV + bool "VCHIQ Character Driver" + help + Enable the creation of VCHIQ character driver to help + communicate with the Videocore platform. + +endif + source "drivers/staging/vc04_services/bcm2835-audio/Kconfig" source "drivers/staging/vc04_services/bcm2835-camera/Kconfig" diff --git a/drivers/staging/vc04_services/Makefile b/drivers/staging/vc04_services/Makefile index db28be341239..0a04338fc962 100644 --- a/drivers/staging/vc04_services/Makefile +++ b/drivers/staging/vc04_services/Makefile @@ -7,7 +7,10 @@ vchiq-objs := \ interface/vchiq_arm/vchiq_2835_arm.o \ interface/vchiq_arm/vchiq_debugfs.o \ interface/vchiq_arm/vchiq_connected.o \ - interface/vchiq_arm/vchiq_dev.o \ + +ifdef CONFIG_VCHIQ_CDEV +vchiq-objs += interface/vchiq_arm/vchiq_dev.o +endif obj-$(CONFIG_SND_BCM2835) += bcm2835-audio/ obj-$(CONFIG_VIDEO_BCM2835) += bcm2835-camera/ diff --git a/drivers/staging/vc04_services/interface/vchiq_arm/vchiq_arm.h b/drivers/staging/vc04_services/interface/vchiq_arm/vchiq_arm.h index 2453971b6b78..e8e39a154c74 100644 --- a/drivers/staging/vc04_services/interface/vchiq_arm/vchiq_arm.h +++ b/drivers/staging/vc04_services/interface/vchiq_arm/vchiq_arm.h @@ -174,12 +174,21 @@ vchiq_instance_get_trace(struct vchiq_instance *instance); extern void vchiq_instance_set_trace(struct vchiq_instance *instance, int trace); +#if IS_ENABLED(CONFIG_VCHIQ_CDEV) + extern void vchiq_deregister_chrdev(void); extern int vchiq_register_chrdev(struct device *parent); +#else + +static inline void vchiq_deregister_chrdev(void) { } +static inline int vchiq_register_chrdev(struct device *parent) { return 0; } + +#endif /* IS_ENABLED(CONFIG_VCHIQ_CDEV) */ + extern enum vchiq_status service_callback(enum vchiq_reason reason, struct vchiq_header *header, unsigned int handle, void *bulk_userdata);