media: imx258: Add imx258 camera sensor driver

Add a V4L2 sub-device driver for the Sony IMX258 image sensor.
This is a camera sensor using the I2C bus for control and the
CSI-2 bus for data.

Signed-off-by: Jason Chen <jasonx.z.chen@intel.com>
Signed-off-by: Andy Yeh <andy.yeh@intel.com>
Signed-off-by: Alan Chiang <alanx.chiang@intel.com>
Reviewed-by: Tomasz Figa <tfiga@chromium.org>
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>

MAINTAINERS

@@ -13070,6 +13070,13 @@ S:	Maintained
 F:	drivers/ssb/
 F:	include/linux/ssb/
 
+SONY IMX258 SENSOR DRIVER
+M:	Sakari Ailus <sakari.ailus@linux.intel.com>
+L:	linux-media@vger.kernel.org
+T:	git git://linuxtv.org/media_tree.git
+S:	Maintained
+F:	drivers/media/i2c/imx258.c
+
 SONY IMX274 SENSOR DRIVER
 M:	Leon Luo <leonl@leopardimaging.com>
 L:	linux-media@vger.kernel.org

drivers/media/i2c/Kconfig

@@ -575,6 +575,17 @@ config VIDEO_APTINA_PLL
 config VIDEO_SMIAPP_PLL
 	tristate
 
+config VIDEO_IMX258
+	tristate "Sony IMX258 sensor support"
+	depends on I2C && VIDEO_V4L2 && VIDEO_V4L2_SUBDEV_API
+	depends on MEDIA_CAMERA_SUPPORT
+	---help---
+	  This is a Video4Linux2 sensor-level driver for the Sony
+	  IMX258 camera.
+
+	  To compile this driver as a module, choose M here: the
+	  module will be called imx258.
+
 config VIDEO_IMX274
 	tristate "Sony IMX274 sensor support"
 	depends on I2C && VIDEO_V4L2 && VIDEO_V4L2_SUBDEV_API

drivers/media/i2c/Makefile

@@ -101,6 +101,7 @@ 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
+obj-$(CONFIG_VIDEO_IMX258)	+= imx258.o
 obj-$(CONFIG_VIDEO_IMX274)	+= imx274.o
 
 obj-$(CONFIG_SDR_MAX2175) += max2175.o