media: intel-ipu3: cio2: add new MIPI-CSI2 driver

This patch adds CIO2 CSI-2 device driver for
Intel's IPU3 camera sub-system support.

Signed-off-by: Yong Zhi <yong.zhi@intel.com>
Signed-off-by: Hyungwoo Yang <hyungwoo.yang@intel.com>
Signed-off-by: Rajmohan Mani <rajmohan.mani@intel.com>
Signed-off-by: Vijaykumar Ramya <ramya.vijaykumar@intel.com>
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>

MAINTAINERS

@@ -7068,6 +7068,14 @@ R:	Dan Williams <dan.j.williams@intel.com>
 S:	Odd fixes
 F:	drivers/dma/iop-adma.c
 
+INTEL IPU3 CSI-2 CIO2 DRIVER
+M:	Yong Zhi <yong.zhi@intel.com>
+M:	Sakari Ailus <sakari.ailus@linux.intel.com>
+L:	linux-media@vger.kernel.org
+S:	Maintained
+F:	drivers/media/pci/intel/ipu3/
+F:	Documentation/media/uapi/v4l/pixfmt-srggb10-ipu3.rst
+
 INTEL IXP4XX QMGR, NPE, ETHERNET and HSS SUPPORT
 M:	Krzysztof Halasa <khalasa@piap.pl>
 S:	Maintained

drivers/media/pci/Kconfig

@@ -54,5 +54,7 @@ source "drivers/media/pci/smipcie/Kconfig"
 source "drivers/media/pci/netup_unidvb/Kconfig"
 endif
 
+source "drivers/media/pci/intel/ipu3/Kconfig"
+
 endif #MEDIA_PCI_SUPPORT
 endif #PCI

drivers/media/pci/Makefile

@@ -14,7 +14,8 @@ obj-y        +=	ttpci/		\
 		ddbridge/	\
 		saa7146/	\
 		smipcie/	\
-		netup_unidvb/
+		netup_unidvb/	\
+		intel/
 
 obj-$(CONFIG_VIDEO_IVTV) += ivtv/
 obj-$(CONFIG_VIDEO_ZORAN) += zoran/

drivers/media/pci/intel/Makefile

@@ -0,0 +1,5 @@
+#
+# Makefile for the IPU3 cio2 and ImGU drivers
+#
+
+obj-y	+= ipu3/

drivers/media/pci/intel/ipu3/Kconfig

@@ -0,0 +1,19 @@
+config VIDEO_IPU3_CIO2
+	tristate "Intel ipu3-cio2 driver"
+	depends on VIDEO_V4L2 && PCI
+	depends on VIDEO_V4L2_SUBDEV_API
+	depends on X86 || COMPILE_TEST
+	depends on MEDIA_CONTROLLER
+	depends on HAS_DMA
+	depends on ACPI
+	select V4L2_FWNODE
+	select VIDEOBUF2_DMA_SG
+
+	---help---
+	This is the Intel IPU3 CIO2 CSI-2 receiver unit, found in Intel
+	Skylake and Kaby Lake SoCs and used for capturing images and
+	video from a camera sensor.
+
+	Say Y or M here if you have a Skylake/Kaby Lake SoC with MIPI CSI-2
+	connected camera.
+	The module will be called ipu3-cio2.

drivers/media/pci/intel/ipu3/Makefile

@@ -0,0 +1 @@
+obj-$(CONFIG_VIDEO_IPU3_CIO2) += ipu3-cio2.o