v4l2: xilinx: dprx: Add HDCP2x support

Add HDCP2X support to the DP Rx driver.
The HDCP protocol specifies a secure method of transmitting
audiovisual content. Further, the audiovisual content can be
transmitted over a DisplayPort interface. The HDCP Controller
IP core is used for data decryption along with the DisplayPort
Receive IP core in the DisplayPort 1.4 RX Subsystem

Signed-off-by: Kunal Rane <kunal.rane@amd.com>
Reviewed-by: Vishal Sagar <vishal.sagar@amd.co>

drivers/media/platform/xilinx/Kconfig

@@ -71,6 +71,15 @@ config VIDEO_XILINX_HDCP1X_RX
 	  authentication. Choose this config in a platform where the DP/HDMI Rx
 	  subsystem enabled with HDCP1X.
 
+config VIDEO_XILINX_HDCP2X_RX
+	bool
+	select XILINX_HDCP_COMMON
+	help
+	  Functionality of HDCP2X Rx for DP and HDMI. It handles the hdcp2x rx
+	  authentication. Choose this config in a platform where the DP/HDMI Rx
+	  subsystem enabled with HDCP2X.
+
+
 config VIDEO_XILINX_HDMI21RXSS
 	tristate "Xilinx HDMI 2.1 Rx Subsystem"
 	depends on VIDEO_XILINX
@@ -174,6 +183,7 @@ config VIDEO_XILINX_DPRXSS
 	tristate "Xilinx DP Rx Subsystem"
 	depends on VIDEO_XILINX
 	select VIDEO_XILINX_HDCP1X_RX
+	select VIDEO_XILINX_HDCP2X_RX
 	select DRM_DISPLAY_HELPER
 	select DRM_DISPLAY_DP_HELPER
 	help

drivers/media/platform/xilinx/Makefile

@@ -15,6 +15,8 @@ obj-$(CONFIG_VIDEO_XILINX_DEMOSAIC) += xilinx-demosaic.o
 obj-$(CONFIG_VIDEO_XILINX_DPRXSS) += xilinx-dprxss.o
 obj-$(CONFIG_VIDEO_XILINX_GAMMA) += xilinx-gamma.o
 obj-$(CONFIG_VIDEO_XILINX_HDCP1X_RX) += xilinx-hdcp1x-rx.o
+obj-$(CONFIG_VIDEO_XILINX_HDCP2X_RX) += xilinx-hdcp2x-rx.o \
+					xilinx-hdcp2x-rx-crypt.o
 obj-$(CONFIG_VIDEO_XILINX_HDMI21RXSS) += xilinx-hdmirxss.o
 obj-$(CONFIG_VIDEO_XILINX_HLS) += xilinx-hls.o
 obj-$(CONFIG_VIDEO_XILINX_ISP) += xilinx-isppipeline.o