Revert "drm: Switch DRM_DISPLAY_DP_AUX_BUS to depends on"

This reverts commit 4d15125d, as helper
code should always be selected by the driver that needs it, for the
convenience of the final user configuring a kernel.

The user who configures a kernel should not need to know which helpers
are needed for the driver he is interested in.  Making a driver depend
on helper code means that the user needs to know which helpers to enable
first, which is very user-unfriendly.
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Link: https://patchwork.freedesktop.org/patch/msgid/79824fec01eb9ab0673b9409f9b39cc8b5cc338d.1713780345.git.geert+renesas@glider.beSigned-off-by: Maxime Ripard <mripard@kernel.org>

drivers/gpu/drm/bridge/Kconfig

@@ -92,11 +92,11 @@ config DRM_FSL_LDB
 
 config DRM_ITE_IT6505
 	tristate "ITE IT6505 DisplayPort bridge"
-	depends on DRM_DISPLAY_DP_AUX_BUS
 	depends on DRM_DISPLAY_HELPER
 	depends on OF
 	select DRM_DISPLAY_DP_HELPER
 	select DRM_DISPLAY_HDCP_HELPER
+	select DRM_DISPLAY_DP_AUX_BUS
 	select DRM_KMS_HELPER
 	select EXTCON
 	select CRYPTO
@@ -232,10 +232,10 @@ config DRM_PARADE_PS8622
 
 config DRM_PARADE_PS8640
 	tristate "Parade PS8640 MIPI DSI to eDP Converter"
-	depends on DRM_DISPLAY_DP_AUX_BUS
 	depends on DRM_DISPLAY_HELPER
 	depends on OF
 	select DRM_DISPLAY_DP_HELPER
+	select DRM_DISPLAY_DP_AUX_BUS
 	select DRM_KMS_HELPER
 	select DRM_MIPI_DSI
 	select DRM_PANEL
@@ -387,7 +387,6 @@ config DRM_TI_SN65DSI83
 
 config DRM_TI_SN65DSI86
 	tristate "TI SN65DSI86 DSI to eDP bridge"
-	depends on DRM_DISPLAY_DP_AUX_BUS
 	depends on DRM_DISPLAY_HELPER
 	depends on OF
 	select DRM_DISPLAY_DP_HELPER
@@ -396,6 +395,7 @@ config DRM_TI_SN65DSI86
 	select DRM_PANEL
 	select DRM_MIPI_DSI
 	select AUXILIARY_BUS
+	select DRM_DISPLAY_DP_AUX_BUS
 	help
 	  Texas Instruments SN65DSI86 DSI to eDP Bridge driver
 

drivers/gpu/drm/bridge/analogix/Kconfig

@@ -33,11 +33,11 @@ config DRM_ANALOGIX_DP
 config DRM_ANALOGIX_ANX7625
 	tristate "Analogix Anx7625 MIPI to DP interface support"
 	depends on DRM
-	depends on DRM_DISPLAY_DP_AUX_BUS
 	depends on DRM_DISPLAY_HELPER
 	depends on OF
 	select DRM_DISPLAY_DP_HELPER
 	select DRM_DISPLAY_HDCP_HELPER
+	select DRM_DISPLAY_DP_AUX_BUS
 	select DRM_MIPI_DSI
 	help
 	  ANX7625 is an ultra-low power 4K mobile HD transmitter

drivers/gpu/drm/display/Kconfig

@@ -11,7 +11,6 @@ config DRM_DISPLAY_DP_AUX_BUS
 	tristate "DRM DisplayPort AUX bus support"
 	depends on DRM
 	depends on OF || COMPILE_TEST
-	default y
 
 config DRM_DISPLAY_DP_AUX_CEC
 	bool "Enable DisplayPort CEC-Tunneling-over-AUX HDMI support"

drivers/gpu/drm/mediatek/Kconfig

@@ -22,11 +22,11 @@ config DRM_MEDIATEK
 
 config DRM_MEDIATEK_DP
 	tristate "DRM DPTX Support for MediaTek SoCs"
-	depends on DRM_DISPLAY_DP_AUX_BUS
 	depends on DRM_DISPLAY_HELPER
 	depends on DRM_MEDIATEK
 	select PHY_MTK_DP
 	select DRM_DISPLAY_DP_HELPER
+	select DRM_DISPLAY_DP_AUX_BUS
 	help
 	  DRM/KMS Display Port driver for MediaTek SoCs.
 

drivers/gpu/drm/msm/Kconfig

@@ -5,7 +5,6 @@ config DRM_MSM
 	depends on ARCH_QCOM || SOC_IMX5 || COMPILE_TEST
 	depends on COMMON_CLK
 	depends on DRM
-	depends on DRM_DISPLAY_DP_AUX_BUS
 	depends on DRM_DISPLAY_HELPER
 	depends on IOMMU_SUPPORT
 	depends on QCOM_AOSS_QMP || QCOM_AOSS_QMP=n
@@ -16,6 +15,7 @@ config DRM_MSM
 	select IOMMU_IO_PGTABLE
 	select QCOM_MDT_LOADER if ARCH_QCOM
 	select REGULATOR
+	select DRM_DISPLAY_DP_AUX_BUS
 	select DRM_DISPLAY_DP_HELPER
 	select DRM_EXEC
 	select DRM_KMS_HELPER

drivers/gpu/drm/panel/Kconfig

@@ -583,11 +583,11 @@ config DRM_PANEL_SAMSUNG_S6E88A0_AMS452EF01
 config DRM_PANEL_SAMSUNG_ATNA33XC20
 	tristate "Samsung ATNA33XC20 eDP panel"
 	depends on BACKLIGHT_CLASS_DEVICE
-	depends on DRM_DISPLAY_DP_AUX_BUS
 	depends on DRM_DISPLAY_HELPER
 	depends on OF
 	depends on PM
 	select DRM_DISPLAY_DP_HELPER
+	select DRM_DISPLAY_DP_AUX_BUS
 	help
 	  DRM panel driver for the Samsung ATNA33XC20 panel. This panel can't
 	  be handled by the DRM_PANEL_SIMPLE driver because its power
@@ -823,12 +823,12 @@ config DRM_PANEL_STARTEK_KD070FHFID015
 config DRM_PANEL_EDP
 	tristate "support for simple Embedded DisplayPort panels"
 	depends on BACKLIGHT_CLASS_DEVICE
-	depends on DRM_DISPLAY_DP_AUX_BUS
 	depends on DRM_DISPLAY_HELPER
 	depends on OF
 	depends on PM
 	select VIDEOMODE_HELPERS
 	select DRM_DISPLAY_DP_HELPER
+	select DRM_DISPLAY_DP_AUX_BUS
 	select DRM_KMS_HELPER
 	help
 	  DRM panel driver for dumb eDP panels that need at most a regulator and

drivers/gpu/drm/tegra/Kconfig

@@ -4,11 +4,11 @@ config DRM_TEGRA
 	depends on ARCH_TEGRA || COMPILE_TEST
 	depends on COMMON_CLK
 	depends on DRM
-	depends on DRM_DISPLAY_DP_AUX_BUS
 	depends on DRM_DISPLAY_HELPER
 	depends on OF
 	select DRM_DISPLAY_DP_HELPER
 	select DRM_DISPLAY_HDMI_HELPER
+	select DRM_DISPLAY_DP_AUX_BUS
 	select DRM_KMS_HELPER
 	select DRM_MIPI_DSI
 	select DRM_PANEL