[media] v4l: omap4iss: Add support for OMAP4 camera interface - Build system

This adds a very simplistic driver to utilize the CSI2A interface inside
the ISS subsystem in OMAP4, and dump the data to memory.
Check Documentation/video4linux/omap4_camera.txt for details.
This commit adds and updates Kconfig's and Makefile's, as well as a TODO
list.
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Acked-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

drivers/staging/media/Kconfig

@@ -33,6 +33,8 @@ source "drivers/staging/media/msi3101/Kconfig"
 
 source "drivers/staging/media/solo6x10/Kconfig"
 
+source "drivers/staging/media/omap4iss/Kconfig"
+
 # Keep LIRC at the end, as it has sub-menus
 source "drivers/staging/media/lirc/Kconfig"
 

drivers/staging/media/Makefile

@@ -6,3 +6,4 @@ obj-$(CONFIG_VIDEO_DT3155)	+= dt3155v4l/
 obj-$(CONFIG_VIDEO_GO7007)	+= go7007/
 obj-$(CONFIG_USB_MSI3101)	+= msi3101/
 obj-$(CONFIG_VIDEO_DM365_VPFE)	+= davinci_vpfe/
+obj-$(CONFIG_VIDEO_OMAP4)	+= omap4iss/

drivers/staging/media/omap4iss/Kconfig

+config VIDEO_OMAP4
+	bool "OMAP 4 Camera support"
+	depends on VIDEO_V4L2 && VIDEO_V4L2_SUBDEV_API && I2C && ARCH_OMAP4
+	select VIDEOBUF2_DMA_CONTIG
+	---help---
+	  Driver for an OMAP 4 ISS controller.
+
+config VIDEO_OMAP4_DEBUG
+	bool "OMAP 4 Camera debug messages"
+	depends on VIDEO_OMAP4
+	---help---
+	  Enable debug messages on OMAP 4 ISS controller driver.

drivers/staging/media/omap4iss/Makefile

+# Makefile for OMAP4 ISS driver
+
+omap4-iss-objs += \
+	iss.o iss_csi2.o iss_csiphy.o iss_ipipeif.o iss_ipipe.o iss_resizer.o iss_video.o
+
+obj-$(CONFIG_VIDEO_OMAP4) += omap4-iss.o

drivers/staging/media/omap4iss/TODO

+* Make the driver compile as a module
+* Fix FIFO/buffer overflows and underflows
+* Replace dummy resizer code with a real implementation
+* Fix checkpatch errors and warnings