linux/drivers/gpu/drm/display/Kconfig
YueHaibing 876271118a drm/display: Fix build error without CONFIG_OF
While CONFIG_OF is n but COMPILE_TEST is y, we got this:

WARNING: unmet direct dependencies detected for DRM_DP_AUX_BUS
  Depends on [n]: HAS_IOMEM [=y] && DRM [=y] && OF [=n]
  Selected by [y]:
  - DRM_MSM [=y] && HAS_IOMEM [=y] && DRM [=y] && (ARCH_QCOM || SOC_IMX5 || COMPILE_TEST [=y]) && COMMON_CLK [=y] && IOMMU_SUPPORT [=y] && (QCOM_OCMEM [=n] || QCOM_OCMEM [=n]=n) && (QCOM_LLCC [=y] || QCOM_LLCC [=y]=n) && (QCOM_COMMAND_DB [=n] || QCOM_COMMAND_DB [=n]=n)

Make DRM_DP_AUX_BUS depends on OF || COMPILE_TEST to fix this warning.

Fixes: 1e0f66420b ("drm/display: Introduce a DRM display-helper module")
Signed-off-by: YueHaibing <yuehaibing@huawei.com>
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Reviewed-by: Abhinav Kumar <quic_abhinavk@quicinc.com>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20220611041612.1976-1-yuehaibing@huawei.com
2022-06-23 16:18:02 +02:00

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# SPDX-License-Identifier: MIT
config DRM_DP_AUX_BUS
tristate
depends on DRM
depends on OF || COMPILE_TEST
config DRM_DISPLAY_HELPER
tristate
depends on DRM
help
DRM helpers for display adapters.
config DRM_DISPLAY_DP_HELPER
bool
depends on DRM_DISPLAY_HELPER
help
DRM display helpers for DisplayPort.
config DRM_DISPLAY_HDCP_HELPER
bool
depends on DRM_DISPLAY_HELPER
help
DRM display helpers for HDCP.
config DRM_DISPLAY_HDMI_HELPER
bool
depends on DRM_DISPLAY_HELPER
help
DRM display helpers for HDMI.
config DRM_DP_AUX_CHARDEV
bool "DRM DP AUX Interface"
depends on DRM && DRM_DISPLAY_HELPER
select DRM_DISPLAY_DP_HELPER
help
Choose this option to enable a /dev/drm_dp_auxN node that allows to
read and write values to arbitrary DPCD registers on the DP aux
channel.
config DRM_DP_CEC
bool "Enable DisplayPort CEC-Tunneling-over-AUX HDMI support"
depends on DRM && DRM_DISPLAY_HELPER
select DRM_DISPLAY_DP_HELPER
select CEC_CORE
help
Choose this option if you want to enable HDMI CEC support for
DisplayPort/USB-C to HDMI adapters.
Note: not all adapters support this feature, and even for those
that do support this they often do not hook up the CEC pin.