staging: xlnx_tsmux: Initial version of xlnx mpeg2tsmux driver

This patch adds the initial version of xilinx mpeg2tsmux driver.
The Xilinx mpeg2tsmux is a packet based IP which reads the elementary
streams from memory and writes the MPEG2 Transport stream to memory.

This is a plane char driver without drm/v4l2 framework, as it doesn't
operate on any media attributes.

Initial version of driver is implemented as char driver with ioctl
calls to alloc, dealloc buffers for source and destination.

Signed-off-by: Venkateshwar Rao Gannavarapu <venkateshwar.rao.gannavarapu@xilinx.com>
State: pending

drivers/staging/Kconfig

@@ -129,4 +129,6 @@ source "drivers/staging/fclk/Kconfig"
 
 source "drivers/staging/xlnxsync/Kconfig"
 
+source "drivers/staging/xlnx_tsmux/Kconfig"
+
 endif # STAGING

drivers/staging/Makefile

@@ -55,3 +55,4 @@ obj-$(CONFIG_EXFAT_FS)		+= exfat/
 obj-$(CONFIG_QLGE)		+= qlge/
 obj-$(CONFIG_XILINX_FCLK)	+= fclk/
 obj-$(CONFIG_XLNX_SYNC)		+= xlnxsync/
+obj-$(CONFIG_XLNX_TSMUX)	+= xlnx_tsmux/

drivers/staging/xlnx_tsmux/Kconfig

@@ -0,0 +1,11 @@
+config XLNX_TSMUX
+	tristate "Xilinx MPEG2 Transport Stream Muxer"
+	select DMA_SHARED_BUFFER
+	help
+	  This driver is developed for mpeg2 transport stream muxer,
+	  designed to allow passage of multimedia streams from the source
+	  kernel sub-system, prepares mpeg2 transport stream and forward
+	  to the sink kernel subsystem.
+
+	  To compile this driver as a module, choose M here.
+	  If unsure, choose N.

drivers/staging/xlnx_tsmux/MAINTAINERS

@@ -0,0 +1,4 @@
+XILINX MPG2TSMUX DRIVER
+M:	Venkateshwar Rao <venkateshwar.rao.gannavarapu@xilinx.com>
+S:	Maintained
+F:	drivers/staging/xlnx_tsmux

drivers/staging/xlnx_tsmux/Makefile

@@ -0,0 +1 @@
+obj-$(CONFIG_XLNX_TSMUX) += xlnx_mpg2tsmux.o