Revert "drm: Switch DRM_DISPLAY_DP_HELPER to depends on"

This reverts commit 0323287d, 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/89ac456805746b6d0c888f10c5120b11aacd3319.1713780345.git.geert+renesas@glider.beSigned-off-by: Maxime Ripard <mripard@kernel.org>

drivers/gpu/drm/Kconfig

@@ -75,11 +75,11 @@ config DRM_KUNIT_TEST_HELPERS
 config DRM_KUNIT_TEST
 	tristate "KUnit tests for DRM" if !KUNIT_ALL_TESTS
 	depends on DRM
-	depends on DRM_DISPLAY_DP_HELPER
 	depends on DRM_DISPLAY_HELPER
 	depends on KUNIT
 	depends on MMU
 	select DRM_BUDDY
+	select DRM_DISPLAY_DP_HELPER
 	select DRM_EXEC
 	select DRM_EXPORT_FOR_TESTS if m
 	select DRM_GEM_SHMEM_HELPER

drivers/gpu/drm/amd/amdgpu/Kconfig

@@ -3,12 +3,12 @@
 config DRM_AMDGPU
 	tristate "AMD GPU"
 	depends on DRM
-	depends on DRM_DISPLAY_DP_HELPER
 	depends on DRM_DISPLAY_HELPER
 	depends on MMU
 	depends on PCI
 	depends on !UML
 	select FW_LOADER
+	select DRM_DISPLAY_DP_HELPER
 	select DRM_DISPLAY_HDMI_HELPER
 	select DRM_DISPLAY_HDCP_HELPER
 	select DRM_KMS_HELPER

drivers/gpu/drm/bridge/Kconfig

@@ -93,9 +93,9 @@ config DRM_FSL_LDB
 config DRM_ITE_IT6505
 	tristate "ITE IT6505 DisplayPort bridge"
 	depends on DRM_DISPLAY_DP_AUX_BUS
-	depends on DRM_DISPLAY_DP_HELPER
 	depends on DRM_DISPLAY_HELPER
 	depends on OF
+	select DRM_DISPLAY_DP_HELPER
 	select DRM_DISPLAY_HDCP_HELPER
 	select DRM_KMS_HELPER
 	select EXTCON
@@ -233,9 +233,9 @@ 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_DP_HELPER
 	depends on DRM_DISPLAY_HELPER
 	depends on OF
+	select DRM_DISPLAY_DP_HELPER
 	select DRM_KMS_HELPER
 	select DRM_MIPI_DSI
 	select DRM_PANEL
@@ -319,9 +319,9 @@ config DRM_TOSHIBA_TC358764
 
 config DRM_TOSHIBA_TC358767
 	tristate "Toshiba TC358767 eDP bridge"
-	depends on DRM_DISPLAY_DP_HELPER
 	depends on DRM_DISPLAY_HELPER
 	depends on OF
+	select DRM_DISPLAY_DP_HELPER
 	select DRM_KMS_HELPER
 	select REGMAP_I2C
 	select DRM_MIPI_DSI
@@ -342,9 +342,9 @@ config DRM_TOSHIBA_TC358768
 
 config DRM_TOSHIBA_TC358775
 	tristate "Toshiba TC358775 DSI/LVDS bridge"
-	depends on DRM_DISPLAY_DP_HELPER
 	depends on DRM_DISPLAY_HELPER
 	depends on OF
+	select DRM_DISPLAY_DP_HELPER
 	select DRM_KMS_HELPER
 	select REGMAP_I2C
 	select DRM_PANEL
@@ -388,9 +388,9 @@ 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_DP_HELPER
 	depends on DRM_DISPLAY_HELPER
 	depends on OF
+	select DRM_DISPLAY_DP_HELPER
 	select DRM_KMS_HELPER
 	select REGMAP_I2C
 	select DRM_PANEL

drivers/gpu/drm/bridge/analogix/Kconfig

 # SPDX-License-Identifier: GPL-2.0-only
 config DRM_ANALOGIX_ANX6345
 	tristate "Analogix ANX6345 bridge"
-	depends on DRM_DISPLAY_DP_HELPER
 	depends on DRM_DISPLAY_HELPER
 	depends on OF
 	select DRM_ANALOGIX_DP
+	select DRM_DISPLAY_DP_HELPER
 	select DRM_KMS_HELPER
 	select REGMAP_I2C
 	help
@@ -15,9 +15,9 @@ config DRM_ANALOGIX_ANX6345
 
 config DRM_ANALOGIX_ANX78XX
 	tristate "Analogix ANX78XX bridge"
-	depends on DRM_DISPLAY_DP_HELPER
 	depends on DRM_DISPLAY_HELPER
 	select DRM_ANALOGIX_DP
+	select DRM_DISPLAY_DP_HELPER
 	select DRM_KMS_HELPER
 	select REGMAP_I2C
 	help
@@ -34,9 +34,9 @@ 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_DP_HELPER
 	depends on DRM_DISPLAY_HELPER
 	depends on OF
+	select DRM_DISPLAY_DP_HELPER
 	select DRM_DISPLAY_HDCP_HELPER
 	select DRM_MIPI_DSI
 	help

drivers/gpu/drm/bridge/cadence/Kconfig

@@ -23,9 +23,9 @@ endif
 
 config DRM_CDNS_MHDP8546
 	tristate "Cadence DPI/DP bridge"
-	depends on DRM_DISPLAY_DP_HELPER
 	depends on DRM_DISPLAY_HELPER
 	depends on OF
+	select DRM_DISPLAY_DP_HELPER
 	select DRM_DISPLAY_HDCP_HELPER
 	select DRM_KMS_HELPER
 	select DRM_PANEL_BRIDGE

drivers/gpu/drm/display/Kconfig

@@ -39,7 +39,6 @@ config DRM_DISPLAY_DP_AUX_CHARDEV
 config DRM_DISPLAY_DP_HELPER
 	bool "DRM DisplayPort Helpers"
 	depends on DRM_DISPLAY_HELPER
-	default y
 	help
 	  DRM display helpers for DisplayPort.
 

drivers/gpu/drm/exynos/Kconfig

@@ -67,9 +67,9 @@ config DRM_EXYNOS_DSI
 config DRM_EXYNOS_DP
 	bool "Exynos specific extensions for Analogix DP driver"
 	depends on DRM_EXYNOS_FIMD || DRM_EXYNOS7_DECON
-	depends on DRM_DISPLAY_DP_HELPER
 	depends on DRM_DISPLAY_HELPER
 	select DRM_ANALOGIX_DP
+	select DRM_DISPLAY_DP_HELPER
 	default DRM_EXYNOS
 	select DRM_PANEL
 	help

drivers/gpu/drm/i915/Kconfig

@@ -2,7 +2,6 @@
 config DRM_I915
 	tristate "Intel 8xx/9xx/G3x/G4x/HD Graphics"
 	depends on DRM
-	depends on DRM_DISPLAY_DP_HELPER
 	depends on DRM_DISPLAY_HELPER
 	depends on X86 && PCI
 	depends on !PREEMPT_RT
@@ -12,6 +11,7 @@ config DRM_I915
 	# the shmem_readpage() which depends upon tmpfs
 	select SHMEM
 	select TMPFS
+	select DRM_DISPLAY_DP_HELPER
 	select DRM_DISPLAY_HDCP_HELPER
 	select DRM_DISPLAY_HDMI_HELPER
 	select DRM_KMS_HELPER

drivers/gpu/drm/mediatek/Kconfig

@@ -23,10 +23,10 @@ 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_DP_HELPER
 	depends on DRM_DISPLAY_HELPER
 	depends on DRM_MEDIATEK
 	select PHY_MTK_DP
+	select DRM_DISPLAY_DP_HELPER
 	help
 	  DRM/KMS Display Port driver for MediaTek SoCs.
 

drivers/gpu/drm/msm/Kconfig

@@ -6,7 +6,6 @@ config DRM_MSM
 	depends on COMMON_CLK
 	depends on DRM
 	depends on DRM_DISPLAY_DP_AUX_BUS
-	depends on DRM_DISPLAY_DP_HELPER
 	depends on DRM_DISPLAY_HELPER
 	depends on IOMMU_SUPPORT
 	depends on QCOM_AOSS_QMP || QCOM_AOSS_QMP=n
@@ -17,6 +16,7 @@ config DRM_MSM
 	select IOMMU_IO_PGTABLE
 	select QCOM_MDT_LOADER if ARCH_QCOM
 	select REGULATOR
+	select DRM_DISPLAY_DP_HELPER
 	select DRM_EXEC
 	select DRM_KMS_HELPER
 	select DRM_PANEL

drivers/gpu/drm/nouveau/Kconfig

@@ -2,12 +2,12 @@
 config DRM_NOUVEAU
 	tristate "Nouveau (NVIDIA) cards"
 	depends on DRM
-	depends on DRM_DISPLAY_DP_HELPER
 	depends on DRM_DISPLAY_HELPER
 	depends on PCI
 	depends on MMU
 	select IOMMU_API
 	select FW_LOADER
+	select DRM_DISPLAY_DP_HELPER
 	select DRM_DISPLAY_HDMI_HELPER
 	select DRM_KMS_HELPER
 	select DRM_TTM

drivers/gpu/drm/panel/Kconfig

@@ -545,10 +545,10 @@ config DRM_PANEL_RAYDIUM_RM68200
 config DRM_PANEL_RAYDIUM_RM692E5
 	tristate "Raydium RM692E5-based DSI panel"
 	depends on BACKLIGHT_CLASS_DEVICE
-	depends on DRM_DISPLAY_DP_HELPER
 	depends on DRM_DISPLAY_HELPER
 	depends on DRM_MIPI_DSI
 	depends on OF
+	select DRM_DISPLAY_DP_HELPER
 	help
 	  Say Y here if you want to enable support for Raydium RM692E5-based
 	  display panels, such as the one found in the Fairphone 5 smartphone.
@@ -584,10 +584,10 @@ 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_DP_HELPER
 	depends on DRM_DISPLAY_HELPER
 	depends on OF
 	depends on PM
+	select DRM_DISPLAY_DP_HELPER
 	help
 	  DRM panel driver for the Samsung ATNA33XC20 panel. This panel can't
 	  be handled by the DRM_PANEL_SIMPLE driver because its power
@@ -824,11 +824,11 @@ 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_DP_HELPER
 	depends on DRM_DISPLAY_HELPER
 	depends on OF
 	depends on PM
 	select VIDEOMODE_HELPERS
+	select DRM_DISPLAY_DP_HELPER
 	select DRM_KMS_HELPER
 	help
 	  DRM panel driver for dumb eDP panels that need at most a regulator and
@@ -903,10 +903,10 @@ config DRM_PANEL_TRULY_NT35597_WQXGA
 config DRM_PANEL_VISIONOX_R66451
 	tristate "Visionox R66451"
 	depends on BACKLIGHT_CLASS_DEVICE
-	depends on DRM_DISPLAY_DP_HELPER
 	depends on DRM_DISPLAY_HELPER
 	depends on DRM_MIPI_DSI
 	depends on OF
+	select DRM_DISPLAY_DP_HELPER
 	help
 	  Say Y here if you want to enable support for Visionox
 	  R66451 1080x2340 AMOLED DSI panel.

drivers/gpu/drm/radeon/Kconfig

@@ -4,11 +4,11 @@ config DRM_RADEON
 	tristate "ATI Radeon"
 	depends on AGP || !AGP
 	depends on DRM
-	depends on DRM_DISPLAY_DP_HELPER
 	depends on DRM_DISPLAY_HELPER
 	depends on PCI
 	depends on MMU
 	select FW_LOADER
+	select DRM_DISPLAY_DP_HELPER
         select DRM_KMS_HELPER
 	select DRM_SUBALLOC_HELPER
         select DRM_TTM

drivers/gpu/drm/rockchip/Kconfig

@@ -35,9 +35,9 @@ config ROCKCHIP_VOP2
 
 config ROCKCHIP_ANALOGIX_DP
 	bool "Rockchip specific extensions for Analogix DP driver"
-	depends on DRM_DISPLAY_DP_HELPER
 	depends on DRM_DISPLAY_HELPER
 	depends on ROCKCHIP_VOP
+	select DRM_DISPLAY_DP_HELPER
 	help
 	  This selects support for Rockchip SoC specific extensions
 	  for the Analogix Core DP driver. If you want to enable DP
@@ -45,9 +45,9 @@ config ROCKCHIP_ANALOGIX_DP
 
 config ROCKCHIP_CDN_DP
 	bool "Rockchip cdn DP"
-	depends on DRM_DISPLAY_DP_HELPER
 	depends on DRM_DISPLAY_HELPER
 	depends on EXTCON=y || (EXTCON=m && DRM_ROCKCHIP=m)
+	select DRM_DISPLAY_DP_HELPER
 	help
 	  This selects support for Rockchip SoC specific extensions
 	  for the cdn DP driver. If you want to enable Dp on

drivers/gpu/drm/tegra/Kconfig

@@ -5,9 +5,9 @@ config DRM_TEGRA
 	depends on COMMON_CLK
 	depends on DRM
 	depends on DRM_DISPLAY_DP_AUX_BUS
-	depends on DRM_DISPLAY_DP_HELPER
 	depends on DRM_DISPLAY_HELPER
 	depends on OF
+	select DRM_DISPLAY_DP_HELPER
 	select DRM_DISPLAY_HDMI_HELPER
 	select DRM_KMS_HELPER
 	select DRM_MIPI_DSI

drivers/gpu/drm/xe/Kconfig

@@ -3,7 +3,6 @@ config DRM_XE
 	tristate "Intel Xe Graphics"
 	depends on (m || (y && KUNIT=y))
 	depends on DRM
-	depends on DRM_DISPLAY_DP_HELPER
 	depends on DRM_DISPLAY_HELPER
 	depends on MMU
 	depends on PCI
@@ -18,6 +17,7 @@ config DRM_XE
 	select DRM_KUNIT_TEST_HELPERS if DRM_XE_KUNIT_TEST != n
 	select DRM_PANEL
 	select DRM_SUBALLOC_HELPER
+	select DRM_DISPLAY_DP_HELPER
 	select DRM_DISPLAY_HDCP_HELPER
 	select DRM_DISPLAY_HDMI_HELPER
 	select DRM_MIPI_DSI

drivers/gpu/drm/xlnx/Kconfig

@@ -4,12 +4,12 @@ config DRM_ZYNQMP_DPSUB
 	depends on COMMON_CLK
 	depends on DMADEVICES
 	depends on DRM
-	depends on DRM_DISPLAY_DP_HELPER
 	depends on DRM_DISPLAY_HELPER
 	depends on OF
 	depends on PHY_XILINX_ZYNQMP
 	depends on XILINX_ZYNQMP_DPDMA
 	select DMA_ENGINE
+	select DRM_DISPLAY_DP_HELPER
 	select DRM_GEM_DMA_HELPER
 	select DRM_KMS_HELPER
 	select GENERIC_PHY