linux_dsm_epyc7002/drivers/gpu/drm/etnaviv/Kconfig
Philipp Zabel 49b82c389d drm/etnaviv: make THERMAL selectable
The etnaviv driver causes a link failure if it is built-in but THERMAL
is built as a module:

  drivers/gpu/drm/etnaviv/etnaviv_gpu.o: In function `etnaviv_gpu_bind':
  etnaviv_gpu.c:(.text+0x4c4): undefined reference to `thermal_of_cooling_device_register'
  etnaviv_gpu.c:(.text+0x600): undefined reference to `thermal_cooling_device_unregister'
  drivers/gpu/drm/etnaviv/etnaviv_gpu.o: In function `etnaviv_gpu_unbind':
  etnaviv_gpu.c:(.text+0x2aac): undefined reference to `thermal_cooling_device_unregister'

Adding a Kconfig dependency on THERMAL || !THERMAL to avoid this causes
a dependency loop on x86_64:

  drivers/gpu/drm/tve200/Kconfig:1:error: recursive dependency detected!
  For a resolution refer to Documentation/kbuild/kconfig-language.txt
  subsection "Kconfig recursive dependency limitations"
  drivers/gpu/drm/tve200/Kconfig:1:       symbol DRM_TVE200 depends on CMA
  For a resolution refer to Documentation/kbuild/kconfig-language.txt
  subsection "Kconfig recursive dependency limitations"
  mm/Kconfig:489: symbol CMA is selected by DRM_ETNAVIV
  For a resolution refer to Documentation/kbuild/kconfig-language.txt
  subsection "Kconfig recursive dependency limitations"
  drivers/gpu/drm/etnaviv/Kconfig:2:      symbol DRM_ETNAVIV depends on THERMAL
  For a resolution refer to Documentation/kbuild/kconfig-language.txt
  subsection "Kconfig recursive dependency limitations"
  drivers/thermal/Kconfig:5:      symbol THERMAL is selected by ACPI_VIDEO
  For a resolution refer to Documentation/kbuild/kconfig-language.txt
  subsection "Kconfig recursive dependency limitations"
  drivers/acpi/Kconfig:189:       symbol ACPI_VIDEO is selected by BACKLIGHT_CLASS_DEVICE
  For a resolution refer to Documentation/kbuild/kconfig-language.txt
  subsection "Kconfig recursive dependency limitations"
  drivers/video/backlight/Kconfig:158:    symbol BACKLIGHT_CLASS_DEVICE is selected by DRM_PARADE_PS8622
  For a resolution refer to Documentation/kbuild/kconfig-language.txt
  subsection "Kconfig recursive dependency limitations"
  drivers/gpu/drm/bridge/Kconfig:62:      symbol DRM_PARADE_PS8622 depends on DRM_BRIDGE
  For a resolution refer to Documentation/kbuild/kconfig-language.txt
  subsection "Kconfig recursive dependency limitations"
  drivers/gpu/drm/bridge/Kconfig:1:       symbol DRM_BRIDGE is selected by DRM_TVE200

To work around this, add a new option DRM_ETNAVIV_THERMAL to optionally
enable thermal throttling support and make DRM_ETNAVIV select THERMAL
at the same time.

Reported-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
2017-12-01 17:37:54 +01:00

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config DRM_ETNAVIV
tristate "ETNAVIV (DRM support for Vivante GPU IP cores)"
depends on DRM
depends on ARCH_MXC || ARCH_DOVE || (ARM && COMPILE_TEST)
depends on MMU
select SHMEM
select SYNC_FILE
select THERMAL if DRM_ETNAVIV_THERMAL
select TMPFS
select WANT_DEV_COREDUMP
select CMA if HAVE_DMA_CONTIGUOUS
select DMA_CMA if HAVE_DMA_CONTIGUOUS
help
DRM driver for Vivante GPUs.
config DRM_ETNAVIV_THERMAL
bool "enable ETNAVIV thermal throttling"
depends on DRM_ETNAVIV
default y
help
Compile in support for thermal throttling.
Say Y unless you want to risk burning your SoC.
config DRM_ETNAVIV_REGISTER_LOGGING
bool "enable ETNAVIV register logging"
depends on DRM_ETNAVIV
help
Compile in support for logging register reads/writes in a format
that can be parsed by envytools demsm tool. If enabled, register
logging can be switched on via etnaviv.reglog=y module param.