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staging: vchiq: Add details to Kconfig help texts
Add some details to the Kconfig definitions of $CONFIG_VCHIQ_CDEV and $CONFIG_BCM2835_VCHIQ to help make the motive behind the configs a bit more clear. Reviewed-by: Stefan Wahren <stefan.wahren@i2se.com> Signed-off-by: Ojaswin Mujoo <ojaswin98@gmail.com> Link: https://lore.kernel.org/r/ab88d3222088aca29a319147b50a9d1e9f0f8b81.1627925241.git.ojaswin98@gmail.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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@ -15,18 +15,27 @@ config BCM2835_VCHIQ
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tristate "BCM2835 VCHIQ"
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imply VCHIQ_CDEV
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help
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Kernel to VideoCore communication interface for the
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BCM2835 family of products.
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Defaults to Y when the Broadcom Videocore services
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are included in the build, N otherwise.
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Broadcom BCM2835 and similar SoCs have a VPU called VideoCore. This config
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enables the VCHIQ driver, which implements a messaging interface between
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the kernel and the firmware running on VideoCore. Other drivers use this
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interface to communicate to the VPU. More specifically, the VCHIQ driver is
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used by audio/video and camera drivers as well as for implementing MMAL
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API, which is in turn used by several multimedia services on the BCM2835
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family of SoCs.
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Defaults to Y when the Broadcom Videocore services are included in
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the build, N otherwise.
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if BCM2835_VCHIQ
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config VCHIQ_CDEV
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bool "VCHIQ Character Driver"
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help
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Enable the creation of VCHIQ character driver to help
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communicate with the Videocore platform.
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Enable the creation of VCHIQ character driver. The cdev exposes ioctls used
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by userspace libraries and testing tools to interact with VideoCore, via
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the VCHIQ core driver (Check BCM2835_VCHIQ for more info).
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This can be set to 'N' if the VideoCore communication is not needed by
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userspace but only by other kernel modules (like bcm2835-audio). If not
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sure, set this to 'Y'.
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endif
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