Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
tjh.dev
kernel
os
linux
1# SPDX-License-Identifier: GPL-2.0
2
3menuconfig BCM_VIDEOCORE
4 tristate "Broadcom VideoCore support"
5 depends on OF
6 depends on RASPBERRYPI_FIRMWARE || (COMPILE_TEST && !RASPBERRYPI_FIRMWARE)
7 default y
8 help
9 Support for Broadcom VideoCore services including
10 the BCM2835 family of products which is used
11 by the Raspberry PI.
12
13if BCM_VIDEOCORE
14
15config BCM2835_VCHIQ
16 tristate "BCM2835 VCHIQ"
17 depends on HAS_DMA
18 imply VCHIQ_CDEV
19 help
20 Broadcom BCM2835 and similar SoCs have a VPU called VideoCore.
21 This config enables the VCHIQ driver, which implements a
22 messaging interface between the kernel and the firmware running
23 on VideoCore. Other drivers use this interface to communicate to
24 the VPU. More specifically, the VCHIQ driver is used by
25 audio/video and camera drivers as well as for implementing MMAL
26 API, which is in turn used by several multimedia services on the
27 BCM2835 family of SoCs.
28
29 Defaults to Y when the Broadcom Videocore services are included
30 in the build, N otherwise.
31
32if BCM2835_VCHIQ
33
34config VCHIQ_CDEV
35 bool "VCHIQ Character Driver"
36 help
37 Enable the creation of VCHIQ character driver. The cdev exposes
38 ioctls used by userspace libraries and testing tools to interact
39 with VideoCore, via the VCHIQ core driver (Check BCM2835_VCHIQ
40 for more info).
41
42 This can be set to 'N' if the VideoCore communication is not
43 needed by userspace but only by other kernel modules
44 (like bcm2835-audio).
45
46 If not sure, set this to 'Y'.
47
48endif
49
50source "drivers/platform/raspberrypi/vchiq-mmal/Kconfig"
51
52endif