V4L/DVB (7535): saa717x: add new audio/video decoder i2c driver

Added the last remaining out-of-tree kernel driver from the ivtv project.
The saa717x is used in several Japanese cards and a Russian card. The
driver is not complete in that only NTSC is supported and no PAL/SECAM.

Hopefully this will be added in the future.
Signed-off-by: Takahiro Adachi <tadachi@tadachi-net.com>
Signed-off-by: Kyuma Ohta <whatisthis@jcom.home.ne.jp>
Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>

drivers/media/video/Kconfig

@@ -270,6 +270,15 @@ config VIDEO_SAA711X
 	  To compile this driver as a module, choose M here: the
 	  module will be called saa7115.
 
+config VIDEO_SAA717X
+	tristate "Philips SAA7171/3/4 audio/video decoders"
+	depends on VIDEO_V4L2 && I2C
+	---help---
+	  Support for the Philips SAA7171/3/4 audio/video decoders.
+
+	  To compile this driver as a module, choose M here: the
+	  module will be called saa717x.
+
 config VIDEO_SAA7191
 	tristate "Philips SAA7191 video decoder"
 	depends on VIDEO_V4L1 && I2C

drivers/media/video/Makefile

@@ -38,6 +38,7 @@ obj-$(CONFIG_VIDEO_SAA7110) += saa7110.o
 obj-$(CONFIG_VIDEO_SAA7111) += saa7111.o
 obj-$(CONFIG_VIDEO_SAA7114) += saa7114.o
 obj-$(CONFIG_VIDEO_SAA711X) += saa7115.o
+obj-$(CONFIG_VIDEO_SAA717X) += saa717x.o
 obj-$(CONFIG_VIDEO_SAA7127) += saa7127.o
 obj-$(CONFIG_VIDEO_SAA7185) += saa7185.o
 obj-$(CONFIG_VIDEO_SAA7191) += saa7191.o

drivers/media/video/ivtv/Kconfig

@@ -10,6 +10,7 @@ config VIDEO_IVTV
 	select VIDEO_CX25840
 	select VIDEO_MSP3400
 	select VIDEO_SAA711X
+	select VIDEO_SAA717X
 	select VIDEO_SAA7127
 	select VIDEO_TVAUDIO
 	select VIDEO_CS53L32A

drivers/media/video/ivtv/ivtv-driver.c

@@ -883,7 +883,9 @@ static void ivtv_load_and_init_modules(struct ivtv *itv)
 #ifndef CONFIG_VIDEO_SAA7127
 	hw = ivtv_request_module(itv, hw, "saa7127", IVTV_HW_SAA7127);
 #endif
+#ifndef CONFIG_VIDEO_SAA717X
 	hw = ivtv_request_module(itv, hw, "saa717x", IVTV_HW_SAA717X);
+#endif
 #ifndef CONFIG_VIDEO_UPD64031A
 	hw = ivtv_request_module(itv, hw, "upd64031a", IVTV_HW_UPD64031A);
 #endif