media: video-i2c: add video-i2c driver

There are several thermal sensors that only have a low-speed bus
interface but output valid video data. This patchset enables support
for the AMG88xx "Grid-Eye" sensor family.
Signed-off-by: Matt Ranostay <matt.ranostay@konsulko.com>
Acked-by: Sakari Ailus <sakari.ailus@linux.intel.com>
[hans.verkuil@cisco.com: split up int ret = ...->xfer(); line]
Signed-off-by: Hans Verkuil <hansverk@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>

MAINTAINERS

@@ -14922,6 +14922,12 @@ L:	linux-media@vger.kernel.org
 S:	Maintained
 F:	drivers/media/platform/video-mux.c
 
+VIDEO I2C POLLING DRIVER
+M:	Matt Ranostay <matt.ranostay@konsulko.com>
+L:	linux-media@vger.kernel.org
+S:	Maintained
+F:	drivers/media/i2c/video-i2c.c
+
 VIDEOBUF2 FRAMEWORK
 M:	Pawel Osciak <pawel@osciak.com>
 M:	Marek Szyprowski <m.szyprowski@samsung.com>

drivers/media/i2c/Kconfig

@@ -974,6 +974,19 @@ config VIDEO_M52790
 
 	 To compile this driver as a module, choose M here: the
 	 module will be called m52790.
+
+config VIDEO_I2C
+	tristate "I2C transport video support"
+	depends on VIDEO_V4L2 && I2C
+	select VIDEOBUF2_VMALLOC
+	---help---
+	  Enable the I2C transport video support which supports the
+	  following:
+	   * Panasonic AMG88xx Grid-Eye Sensors
+
+	  To compile this driver as a module, choose M here: the
+	  module will be called video-i2c
+
 endmenu
 
 menu "Sensors used on soc_camera driver"

drivers/media/i2c/Makefile

@@ -96,6 +96,7 @@ obj-$(CONFIG_VIDEO_LM3646)	+= lm3646.o
 obj-$(CONFIG_VIDEO_SMIAPP_PLL)	+= smiapp-pll.o
 obj-$(CONFIG_VIDEO_AK881X)		+= ak881x.o
 obj-$(CONFIG_VIDEO_IR_I2C)  += ir-kbd-i2c.o
+obj-$(CONFIG_VIDEO_I2C)		+= video-i2c.o
 obj-$(CONFIG_VIDEO_ML86V7667)	+= ml86v7667.o
 obj-$(CONFIG_VIDEO_OV2659)	+= ov2659.o
 obj-$(CONFIG_VIDEO_TC358743)	+= tc358743.o