linux/drivers/gpu/host1x/Kconfig
Arnd Bergmann 6c7a388b62 gpu: host1x: select CONFIG_DMA_SHARED_BUFFER
Linking fails when dma-buf is disabled:

ld.lld: error: undefined symbol: dma_fence_release
>>> referenced by fence.c
>>>               gpu/host1x/fence.o:(host1x_syncpt_fence_enable_signaling) in archive drivers/built-in.a
>>> referenced by fence.c
>>>               gpu/host1x/fence.o:(host1x_fence_signal) in archive drivers/built-in.a
>>> referenced by fence.c
>>>               gpu/host1x/fence.o:(do_fence_timeout) in archive drivers/built-in.a

Fixes: 687db2207b ("gpu: host1x: Add DMA fence implementation")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Reviewed-by: Mikko Perttunen <mperttunen@nvidia.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>
2021-12-16 14:07:06 +01:00

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# SPDX-License-Identifier: GPL-2.0-only
config TEGRA_HOST1X
tristate "NVIDIA Tegra host1x driver"
depends on ARCH_TEGRA || (ARM && COMPILE_TEST)
select DMA_SHARED_BUFFER
select IOMMU_IOVA
help
Driver for the NVIDIA Tegra host1x hardware.
The Tegra host1x module is the DMA engine for register access to
Tegra's graphics- and multimedia-related modules. The modules served
by host1x are referred to as clients. host1x includes some other
functionality, such as synchronization.
if TEGRA_HOST1X
config TEGRA_HOST1X_FIREWALL
bool "Enable HOST1X security firewall"
default y
help
Say yes if kernel should protect command streams from tampering.
If unsure, choose Y.
endif