media: platform: Add Renesas RZ/G2L MIPI CSI-2 receiver driver

Add MIPI CSI-2 receiver driver for Renesas RZ/G2L. The MIPI
CSI-2 is part of the CRU module found on RZ/G2L family.

Based on a patch in the BSP by Hien Huynh
<hien.huynh.px@renesas.com>

Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org>

drivers/media/platform/renesas/Kconfig

@@ -41,6 +41,7 @@ config VIDEO_SH_VOU
 	  Support for the Video Output Unit (VOU) on SuperH SoCs.
 
 source "drivers/media/platform/renesas/rcar-vin/Kconfig"
+source "drivers/media/platform/renesas/rzg2l-cru/Kconfig"
 
 # Mem2mem drivers
 

drivers/media/platform/renesas/Makefile

@@ -4,6 +4,7 @@
 #
 
 obj-y += rcar-vin/
+obj-y += rzg2l-cru/
 obj-y += vsp1/
 
 obj-$(CONFIG_VIDEO_RCAR_DRIF) += rcar_drif.o

drivers/media/platform/renesas/rzg2l-cru/Kconfig

@@ -0,0 +1,17 @@
+# SPDX-License-Identifier: GPL-2.0
+
+config VIDEO_RZG2L_CSI2
+	tristate "RZ/G2L MIPI CSI-2 Receiver"
+	depends on ARCH_RENESAS || COMPILE_TEST
+	depends on V4L_PLATFORM_DRIVERS
+	depends on VIDEO_DEV && OF
+	select MEDIA_CONTROLLER
+	select RESET_CONTROLLER
+	select V4L2_FWNODE
+	select VIDEO_V4L2_SUBDEV_API
+	help
+	  Support for Renesas RZ/G2L (and alike SoC's) MIPI CSI-2
+	  Receiver driver.
+
+	  To compile this driver as a module, choose M here: the
+	  module will be called rzg2l-csi2.

drivers/media/platform/renesas/rzg2l-cru/Makefile

@@ -0,0 +1,3 @@
+# SPDX-License-Identifier: GPL-2.0
+
+obj-$(CONFIG_VIDEO_RZG2L_CSI2) += rzg2l-csi2.o