linux-kernel - [PATCH v4 4/5] drm/bridge-connector: move to DRM_DISPLAY

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Message-Id: <20240715-drm-bridge-connector-fix-hdmi-reset-v4-4-61e6417cfd99@linaro.org>
Date: Mon, 15 Jul 2024 09:33:04 +0300
From: Dmitry Baryshkov <dmitry.baryshkov@...aro.org>
To: Andrzej Hajda <andrzej.hajda@...el.com>, 
 Neil Armstrong <neil.armstrong@...aro.org>, Robert Foss <rfoss@...nel.org>, 
 Laurent Pinchart <Laurent.pinchart@...asonboard.com>, 
 Jonas Karlman <jonas@...boo.se>, Jernej Skrabec <jernej.skrabec@...il.com>, 
 Maarten Lankhorst <maarten.lankhorst@...ux.intel.com>, 
 Maxime Ripard <mripard@...nel.org>, Thomas Zimmermann <tzimmermann@...e.de>, 
 David Airlie <airlied@...il.com>, Daniel Vetter <daniel@...ll.ch>, 
 Dave Stevenson <dave.stevenson@...pberrypi.com>, 
 Laurentiu Palcu <laurentiu.palcu@....nxp.com>, 
 Lucas Stach <l.stach@...gutronix.de>, Shawn Guo <shawnguo@...nel.org>, 
 Sascha Hauer <s.hauer@...gutronix.de>, 
 Pengutronix Kernel Team <kernel@...gutronix.de>, 
 Fabio Estevam <festevam@...il.com>, Paul Cercueil <paul@...pouillou.net>, 
 Anitha Chrisanthus <anitha.chrisanthus@...el.com>, 
 Edmund Dea <edmund.j.dea@...el.com>, 
 Chun-Kuang Hu <chunkuang.hu@...nel.org>, 
 Philipp Zabel <p.zabel@...gutronix.de>, Kevin Hilman <khilman@...libre.com>, 
 Jerome Brunet <jbrunet@...libre.com>, 
 Martin Blumenstingl <martin.blumenstingl@...glemail.com>, 
 Sean Paul <sean@...rly.run>, Marijn Suijten <marijn.suijten@...ainline.org>, 
 Tomi Valkeinen <tomi.valkeinen@...asonboard.com>, 
 Kieran Bingham <kieran.bingham+renesas@...asonboard.com>, 
 Biju Das <biju.das.jz@...renesas.com>, 
 Geert Uytterhoeven <geert+renesas@...der.be>, 
 Sandy Huang <hjc@...k-chips.com>, 
 Heiko Stübner <heiko@...ech.de>, 
 Andy Yan <andy.yan@...k-chips.com>, 
 Thierry Reding <thierry.reding@...il.com>, 
 Mikko Perttunen <mperttunen@...dia.com>, 
 Jonathan Hunter <jonathanh@...dia.com>, Jyri Sarha <jyri.sarha@....fi>, 
 Matthias Brugger <matthias.bgg@...il.com>, 
 AngeloGioacchino Del Regno <angelogioacchino.delregno@...labora.com>
Cc: Rob Clark <robdclark@...il.com>, 
 Abhinav Kumar <quic_abhinavk@...cinc.com>, 
 Dmitry Baryshkov <dmitry.baryshkov@...aro.org>, 
 dri-devel@...ts.freedesktop.org, igt-dev@...ts.freedesktop.org, 
 freedreno@...ts.freedesktop.org, linux-kernel@...r.kernel.org, 
 imx@...ts.linux.dev, linux-arm-kernel@...ts.infradead.org, 
 linux-mips@...r.kernel.org, linux-mediatek@...ts.infradead.org, 
 linux-amlogic@...ts.infradead.org, linux-arm-msm@...r.kernel.org, 
 linux-renesas-soc@...r.kernel.org, linux-rockchip@...ts.infradead.org, 
 linux-tegra@...r.kernel.org
Subject: [PATCH v4 4/5] drm/bridge-connector: move to DRM_DISPLAY_HELPER
 module

drm_bridge_connector is a "leaf" driver, belonging to the display
helper, rather than the "CRTC" drm_kms_helper module. Move the driver
to the drm/display and add necessary Kconfig selection clauses.

Suggested-by: Maxime Ripard <mripard@...nel.org>
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@...aro.org>
---
 MAINTAINERS                                          | 2 +-
 drivers/gpu/drm/Makefile                             | 1 -
 drivers/gpu/drm/bridge/Kconfig                       | 1 +
 drivers/gpu/drm/display/Kconfig                      | 5 +++++
 drivers/gpu/drm/display/Makefile                     | 2 ++
 drivers/gpu/drm/{ => display}/drm_bridge_connector.c | 0
 drivers/gpu/drm/imx/dcss/Kconfig                     | 2 ++
 drivers/gpu/drm/imx/lcdc/Kconfig                     | 2 ++
 drivers/gpu/drm/ingenic/Kconfig                      | 2 ++
 drivers/gpu/drm/kmb/Kconfig                          | 2 ++
 drivers/gpu/drm/mediatek/Kconfig                     | 2 ++
 drivers/gpu/drm/meson/Kconfig                        | 2 ++
 drivers/gpu/drm/msm/Kconfig                          | 1 +
 drivers/gpu/drm/omapdrm/Kconfig                      | 2 ++
 drivers/gpu/drm/renesas/rcar-du/Kconfig              | 2 ++
 drivers/gpu/drm/renesas/rz-du/Kconfig                | 2 ++
 drivers/gpu/drm/renesas/shmobile/Kconfig             | 2 ++
 drivers/gpu/drm/rockchip/Kconfig                     | 4 ++++
 drivers/gpu/drm/tegra/Kconfig                        | 1 +
 drivers/gpu/drm/tidss/Kconfig                        | 2 ++
 drivers/gpu/drm/xlnx/Kconfig                         | 1 +
 21 files changed, 38 insertions(+), 2 deletions(-)

diff --git a/MAINTAINERS b/MAINTAINERS
index fb1df8c29f5a..5b5520ed57fe 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -7463,8 +7463,8 @@ S:	Maintained
 T:	git https://gitlab.freedesktop.org/drm/misc/kernel.git
 F:	Documentation/devicetree/bindings/display/bridge/
 F:	drivers/gpu/drm/bridge/
+F:	drivers/gpu/drm/display/drm_bridge_connector.c
 F:	drivers/gpu/drm/drm_bridge.c
-F:	drivers/gpu/drm/drm_bridge_connector.c
 F:	include/drm/drm_bridge.h
 F:	include/drm/drm_bridge_connector.h
 
diff --git a/drivers/gpu/drm/Makefile b/drivers/gpu/drm/Makefile
index 68cc9258ffc4..fa432a1ac9e2 100644
--- a/drivers/gpu/drm/Makefile
+++ b/drivers/gpu/drm/Makefile
@@ -128,7 +128,6 @@ obj-$(CONFIG_DRM_TTM_HELPER) += drm_ttm_helper.o
 drm_kms_helper-y := \
 	drm_atomic_helper.o \
 	drm_atomic_state_helper.o \
-	drm_bridge_connector.o \
 	drm_crtc_helper.o \
 	drm_damage_helper.o \
 	drm_encoder_slave.o \
diff --git a/drivers/gpu/drm/bridge/Kconfig b/drivers/gpu/drm/bridge/Kconfig
index c621be1a99a8..3eb955333c80 100644
--- a/drivers/gpu/drm/bridge/Kconfig
+++ b/drivers/gpu/drm/bridge/Kconfig
@@ -390,6 +390,7 @@ config DRM_TI_SN65DSI86
 	depends on OF
 	select DRM_DISPLAY_DP_HELPER
 	select DRM_DISPLAY_HELPER
+	select DRM_BRIDGE_CONNECTOR
 	select DRM_KMS_HELPER
 	select REGMAP_I2C
 	select DRM_PANEL
diff --git a/drivers/gpu/drm/display/Kconfig b/drivers/gpu/drm/display/Kconfig
index 9c2da1e48b75..8c174ceb0c4d 100644
--- a/drivers/gpu/drm/display/Kconfig
+++ b/drivers/gpu/drm/display/Kconfig
@@ -13,6 +13,11 @@ config DRM_DISPLAY_HELPER
 
 if DRM_DISPLAY_HELPER
 
+config DRM_BRIDGE_CONNECTOR
+	bool
+	help
+	  DRM connector implementation terminating DRM bridge chains.
+
 config DRM_DISPLAY_DP_AUX_CEC
 	bool "Enable DisplayPort CEC-Tunneling-over-AUX HDMI support"
 	select DRM_DISPLAY_DP_HELPER
diff --git a/drivers/gpu/drm/display/Makefile b/drivers/gpu/drm/display/Makefile
index a023f72fa139..629c834c3192 100644
--- a/drivers/gpu/drm/display/Makefile
+++ b/drivers/gpu/drm/display/Makefile
@@ -3,6 +3,8 @@
 obj-$(CONFIG_DRM_DISPLAY_DP_AUX_BUS) += drm_dp_aux_bus.o
 
 drm_display_helper-y := drm_display_helper_mod.o
+drm_display_helper-$(CONFIG_DRM_BRIDGE_CONNECTOR) += \
+	drm_bridge_connector.o
 drm_display_helper-$(CONFIG_DRM_DISPLAY_DP_HELPER) += \
 	drm_dp_dual_mode_helper.o \
 	drm_dp_helper.o \
diff --git a/drivers/gpu/drm/drm_bridge_connector.c b/drivers/gpu/drm/display/drm_bridge_connector.c
similarity index 100%
rename from drivers/gpu/drm/drm_bridge_connector.c
rename to drivers/gpu/drm/display/drm_bridge_connector.c
diff --git a/drivers/gpu/drm/imx/dcss/Kconfig b/drivers/gpu/drm/imx/dcss/Kconfig
index 3ffc061d392b..59e3b6a1dff0 100644
--- a/drivers/gpu/drm/imx/dcss/Kconfig
+++ b/drivers/gpu/drm/imx/dcss/Kconfig
@@ -2,6 +2,8 @@ config DRM_IMX_DCSS
 	tristate "i.MX8MQ DCSS"
 	select IMX_IRQSTEER
 	select DRM_KMS_HELPER
+	select DRM_DISPLAY_HELPER
+	select DRM_BRIDGE_CONNECTOR
 	select DRM_GEM_DMA_HELPER
 	select VIDEOMODE_HELPERS
 	depends on DRM && ARCH_MXC && ARM64
diff --git a/drivers/gpu/drm/imx/lcdc/Kconfig b/drivers/gpu/drm/imx/lcdc/Kconfig
index 7e57922bbd9d..9c28bb0f4662 100644
--- a/drivers/gpu/drm/imx/lcdc/Kconfig
+++ b/drivers/gpu/drm/imx/lcdc/Kconfig
@@ -3,5 +3,7 @@ config DRM_IMX_LCDC
       depends on DRM && (ARCH_MXC || COMPILE_TEST)
       select DRM_GEM_DMA_HELPER
       select DRM_KMS_HELPER
+      select DRM_DISPLAY_HELPER
+      select DRM_BRIDGE_CONNECTOR
       help
         Found on i.MX1, i.MX21, i.MX25 and i.MX27.
diff --git a/drivers/gpu/drm/ingenic/Kconfig b/drivers/gpu/drm/ingenic/Kconfig
index 3db117c5edd9..8cd7b750dffe 100644
--- a/drivers/gpu/drm/ingenic/Kconfig
+++ b/drivers/gpu/drm/ingenic/Kconfig
@@ -8,6 +8,8 @@ config DRM_INGENIC
 	select DRM_BRIDGE
 	select DRM_PANEL_BRIDGE
 	select DRM_KMS_HELPER
+	select DRM_DISPLAY_HELPER
+	select DRM_BRIDGE_CONNECTOR
 	select DRM_GEM_DMA_HELPER
 	select REGMAP
 	select REGMAP_MMIO
diff --git a/drivers/gpu/drm/kmb/Kconfig b/drivers/gpu/drm/kmb/Kconfig
index fd011367db1d..e5ae3ec52392 100644
--- a/drivers/gpu/drm/kmb/Kconfig
+++ b/drivers/gpu/drm/kmb/Kconfig
@@ -3,6 +3,8 @@ config DRM_KMB_DISPLAY
 	depends on DRM
 	depends on ARCH_KEEMBAY || COMPILE_TEST
 	select DRM_KMS_HELPER
+	select DRM_DISPLAY_HELPER
+	select DRM_BRIDGE_CONNECTOR
 	select DRM_GEM_DMA_HELPER
 	select DRM_MIPI_DSI
 	help
diff --git a/drivers/gpu/drm/mediatek/Kconfig b/drivers/gpu/drm/mediatek/Kconfig
index d6449ebae838..417ac8c9af41 100644
--- a/drivers/gpu/drm/mediatek/Kconfig
+++ b/drivers/gpu/drm/mediatek/Kconfig
@@ -9,6 +9,8 @@ config DRM_MEDIATEK
 	depends on MTK_MMSYS
 	select DRM_GEM_DMA_HELPER if DRM_FBDEV_EMULATION
 	select DRM_KMS_HELPER
+	select DRM_DISPLAY_HELPER
+	select DRM_BRIDGE_CONNECTOR
 	select DRM_MIPI_DSI
 	select DRM_PANEL
 	select MEMORY
diff --git a/drivers/gpu/drm/meson/Kconfig b/drivers/gpu/drm/meson/Kconfig
index 615fdd0ce41b..2544756538cc 100644
--- a/drivers/gpu/drm/meson/Kconfig
+++ b/drivers/gpu/drm/meson/Kconfig
@@ -4,6 +4,8 @@ config DRM_MESON
 	depends on DRM && OF && (ARM || ARM64)
 	depends on ARCH_MESON || COMPILE_TEST
 	select DRM_KMS_HELPER
+	select DRM_DISPLAY_HELPER
+	select DRM_BRIDGE_CONNECTOR
 	select DRM_GEM_DMA_HELPER
 	select DRM_DISPLAY_CONNECTOR
 	select VIDEOMODE_HELPERS
diff --git a/drivers/gpu/drm/msm/Kconfig b/drivers/gpu/drm/msm/Kconfig
index 420385c47193..94d3ed4f7761 100644
--- a/drivers/gpu/drm/msm/Kconfig
+++ b/drivers/gpu/drm/msm/Kconfig
@@ -17,6 +17,7 @@ config DRM_MSM
 	select DRM_DISPLAY_DP_AUX_BUS
 	select DRM_DISPLAY_DP_HELPER
 	select DRM_DISPLAY_HELPER
+	select DRM_BRIDGE_CONNECTOR
 	select DRM_EXEC
 	select DRM_KMS_HELPER
 	select DRM_PANEL
diff --git a/drivers/gpu/drm/omapdrm/Kconfig b/drivers/gpu/drm/omapdrm/Kconfig
index 6c49270cb290..0c6d5afc1ef4 100644
--- a/drivers/gpu/drm/omapdrm/Kconfig
+++ b/drivers/gpu/drm/omapdrm/Kconfig
@@ -4,6 +4,8 @@ config DRM_OMAP
 	depends on DRM && OF
 	depends on ARCH_OMAP2PLUS
 	select DRM_KMS_HELPER
+	select DRM_DISPLAY_HELPER
+	select DRM_BRIDGE_CONNECTOR
 	select FB_DMAMEM_HELPERS_DEFERRED if DRM_FBDEV_EMULATION
 	select VIDEOMODE_HELPERS
 	select HDMI
diff --git a/drivers/gpu/drm/renesas/rcar-du/Kconfig b/drivers/gpu/drm/renesas/rcar-du/Kconfig
index c17e7c50492c..025677fe88d3 100644
--- a/drivers/gpu/drm/renesas/rcar-du/Kconfig
+++ b/drivers/gpu/drm/renesas/rcar-du/Kconfig
@@ -5,6 +5,8 @@ config DRM_RCAR_DU
 	depends on ARM || ARM64 || COMPILE_TEST
 	depends on ARCH_RENESAS || COMPILE_TEST
 	select DRM_KMS_HELPER
+	select DRM_DISPLAY_HELPER
+	select DRM_BRIDGE_CONNECTOR
 	select DRM_GEM_DMA_HELPER
 	select VIDEOMODE_HELPERS
 	help
diff --git a/drivers/gpu/drm/renesas/rz-du/Kconfig b/drivers/gpu/drm/renesas/rz-du/Kconfig
index 5f0db2c5fee6..e1a6dd322caf 100644
--- a/drivers/gpu/drm/renesas/rz-du/Kconfig
+++ b/drivers/gpu/drm/renesas/rz-du/Kconfig
@@ -6,6 +6,8 @@ config DRM_RZG2L_DU
 	depends on VIDEO_RENESAS_VSP1
 	select DRM_GEM_DMA_HELPER
 	select DRM_KMS_HELPER
+	select DRM_DISPLAY_HELPER
+	select DRM_BRIDGE_CONNECTOR
 	select VIDEOMODE_HELPERS
 	help
 	  Choose this option if you have an RZ/G2L alike chipset.
diff --git a/drivers/gpu/drm/renesas/shmobile/Kconfig b/drivers/gpu/drm/renesas/shmobile/Kconfig
index 027220b8fe1c..c329ab8a7a8b 100644
--- a/drivers/gpu/drm/renesas/shmobile/Kconfig
+++ b/drivers/gpu/drm/renesas/shmobile/Kconfig
@@ -5,6 +5,8 @@ config DRM_SHMOBILE
 	depends on ARCH_RENESAS || ARCH_SHMOBILE || COMPILE_TEST
 	select BACKLIGHT_CLASS_DEVICE
 	select DRM_KMS_HELPER
+	select DRM_DISPLAY_HELPER
+	select DRM_BRIDGE_CONNECTOR
 	select DRM_GEM_DMA_HELPER
 	select VIDEOMODE_HELPERS
 	help
diff --git a/drivers/gpu/drm/rockchip/Kconfig b/drivers/gpu/drm/rockchip/Kconfig
index 7df875e38517..23c49e91f1cc 100644
--- a/drivers/gpu/drm/rockchip/Kconfig
+++ b/drivers/gpu/drm/rockchip/Kconfig
@@ -86,6 +86,8 @@ config ROCKCHIP_LVDS
 	bool "Rockchip LVDS support"
 	depends on DRM_ROCKCHIP
 	depends on PINCTRL && OF
+	select DRM_DISPLAY_HELPER
+	select DRM_BRIDGE_CONNECTOR
 	help
 	  Choose this option to enable support for Rockchip LVDS controllers.
 	  Rockchip rk3288 SoC has LVDS TX Controller can be used, and it
@@ -96,6 +98,8 @@ config ROCKCHIP_RGB
 	bool "Rockchip RGB support"
 	depends on DRM_ROCKCHIP
 	depends on PINCTRL
+	select DRM_DISPLAY_HELPER
+	select DRM_BRIDGE_CONNECTOR
 	help
 	  Choose this option to enable support for Rockchip RGB output.
 	  Some Rockchip CRTCs, like rv1108, can directly output parallel
diff --git a/drivers/gpu/drm/tegra/Kconfig b/drivers/gpu/drm/tegra/Kconfig
index 782f51d3044a..e688d8104652 100644
--- a/drivers/gpu/drm/tegra/Kconfig
+++ b/drivers/gpu/drm/tegra/Kconfig
@@ -8,6 +8,7 @@ config DRM_TEGRA
 	select DRM_DISPLAY_DP_HELPER
 	select DRM_DISPLAY_HDMI_HELPER
 	select DRM_DISPLAY_HELPER
+	select DRM_BRIDGE_CONNECTOR
 	select DRM_DISPLAY_DP_AUX_BUS
 	select DRM_KMS_HELPER
 	select DRM_MIPI_DSI
diff --git a/drivers/gpu/drm/tidss/Kconfig b/drivers/gpu/drm/tidss/Kconfig
index 378600806167..2385c56493b9 100644
--- a/drivers/gpu/drm/tidss/Kconfig
+++ b/drivers/gpu/drm/tidss/Kconfig
@@ -3,6 +3,8 @@ config DRM_TIDSS
 	depends on DRM && OF
 	depends on ARM || ARM64 || COMPILE_TEST
 	select DRM_KMS_HELPER
+	select DRM_DISPLAY_HELPER
+	select DRM_BRIDGE_CONNECTOR
 	select DRM_GEM_DMA_HELPER
 	help
 	  The TI Keystone family SoCs introduced a new generation of
diff --git a/drivers/gpu/drm/xlnx/Kconfig b/drivers/gpu/drm/xlnx/Kconfig
index 68ee897de9d7..626e5ac4c33d 100644
--- a/drivers/gpu/drm/xlnx/Kconfig
+++ b/drivers/gpu/drm/xlnx/Kconfig
@@ -8,6 +8,7 @@ config DRM_ZYNQMP_DPSUB
 	select DMA_ENGINE
 	select DRM_DISPLAY_DP_HELPER
 	select DRM_DISPLAY_HELPER
+	select DRM_BRIDGE_CONNECTOR
 	select DRM_GEM_DMA_HELPER
 	select DRM_KMS_HELPER
 	select GENERIC_PHY

-- 
2.39.2