This patch adds a DisplayPort driver for the Mediatek mt8195 SoC.

It supports both functional units on the mt8195, the embedded
DisplayPort as well as the external DisplayPort units. It offers
hot-plug-detection, audio up to 8 channels, and DisplayPort 1.4 with up
to 4 lanes.

This driver is based on an initial version by
Jason-JH.Lin [off-list ref].

Signed-off-by: Markus Schneider-Pargmann <msp@baylibre.com>
---
 drivers/gpu/drm/mediatek/Kconfig      |    7 +
 drivers/gpu/drm/mediatek/Makefile     |    2 +
 drivers/gpu/drm/mediatek/mtk_dp.c     | 3025 ++++++++++++++++++++++++
 drivers/gpu/drm/mediatek/mtk_dp_reg.h | 3095 +++++++++++++++++++++++++
 4 files changed, 6129 insertions(+)
 create mode 100644 drivers/gpu/drm/mediatek/mtk_dp.c
 create mode 100644 drivers/gpu/drm/mediatek/mtk_dp_reg.h

diff --git a/drivers/gpu/drm/mediatek/Kconfig b/drivers/gpu/drm/mediatek/Kconfig
index 2976d21e9a34..d81eb3521c1c 100644
--- a/drivers/gpu/drm/mediatek/Kconfig
+++ b/drivers/gpu/drm/mediatek/Kconfig

@@ -28,3 +28,10 @@ config DRM_MEDIATEK_HDMI
 	select PHY_MTK_HDMI
 	help
 	  DRM/KMS HDMI driver for Mediatek SoCs
+
+config MTK_DPTX_SUPPORT
+	tristate "DRM DPTX Support for Mediatek SoCs"
+	depends on DRM_MEDIATEK
+	select GENERIC_PHY

+	help
+	  DRM/KMS Display Port driver for Mediatek SoCs.

diff --git a/drivers/gpu/drm/mediatek/Makefile b/drivers/gpu/drm/mediatek/Makefile
index dc54a7a69005..6b9d148ab7fe 100644
--- a/drivers/gpu/drm/mediatek/Makefile
+++ b/drivers/gpu/drm/mediatek/Makefile

@@ -20,3 +20,5 @@ mediatek-drm-hdmi-objs := mtk_cec.o \
 			  mtk_hdmi_ddc.o