ov9740: Initial submit of OV9740 driver.

From: Andrew Chew <[email protected]>

This soc_camera driver is for Omnivision's OV9740 sensor. This initial submission provides support for YUV422 output at 1280x720 (720p), which is the sensor's native resolution. 640x480 (VGA) is also supported, with cropping and scaling performed by the sensor's ISP.

This driver is heavily based off of the existing OV9640 driver.

Change-Id I2f3b731e667a8f16df44e03eb5187176d3abb1f4

Signed-off-by Andrew Chew <[email protected]>

---
Applied all of the suggestions from Guennadi Liakhovetski, to wit:

Renamed to_ov9740_sensor macro to to_ov9740.
Added spaces to the sides of comments.
Some renaming of 1280x720 to 720P, and 640x480 to VGA.
Added global array of supported resolutions and their extents. Fixed spacing problem with curly braces.
Removed register arrays for the start and stop streaming register pokes. Removed IS_ERR_VALUE uses.
Changed a set of tiny memcpy's to assignment operations.
Renamed "ary" to "array" in all cases.
Removed a comment accidentally carried over from the OV9640 regarding bus width. Renamed ov9740_set_res_code() to ov9740_set_res().
Changed ov9740_try_fmt() to not return an error if format is not supported. Removed __devinit and __devexit.
Fixed an endianness issue with reading the 16-bit model.
Removed unnecessary "devname" variable in probe call.
Implemented cropcap() and g_crop() methods.

 drivers/media/video/Kconfig     |    6 +
 drivers/media/video/Makefile    |    1 +
 drivers/media/video/ov9740.c    | 1013 +++++++++++++++++++++++++++++++++++++++
 include/media/v4l2-chip-ident.h |    1 +
 4 files changed, 1021 insertions(+), 0 deletions(-)
 create mode 100644 drivers/media/video/ov9740.c

drivers/media/video/Kconfig +0 -0

index d40a8fc..52b6271 100644

drivers/media/video/ov9740.c new file +0 -0

new file mode 100644
index 0000000..e5eee66
@@ -0,0 +1,1013 @@

drivers/media/video/ov9740.c new file +14 -0

+/* Start/Stop streaming from the device */
+static int ov9740_s_stream(struct v4l2_subdev *sd, int enable)
+{
+	struct i2c_client *client = v4l2_get_subdevdata(sd);
+	struct ov9740_priv *priv = to_ov9740(sd);
+	int ret;
+
+	/* Program orientation register. */
+	if (priv->flag_vflip)
+		ret = ov9740_reg_rmw(client, OV9740_IMAGE_ORT, 0x2, 0);
+	else
+		ret = ov9740_reg_rmw(client, OV9740_IMAGE_ORT, 0, 0x2);
+	if (ret < 0)
+		return ret;

drivers/media/video/ov9740.c new file +10 -0

+	}
+
+	return ret;
+}
+
+/* Alter bus settings on camera side */
+static int ov9740_set_bus_param(struct soc_camera_device *icd,
+				unsigned long flags)
+{
+	return 0;

drivers/media/video/ov9740.c new file +3 -0

+
+	return soc_camera_apply_sensor_flags(icl, flags);
+}

drivers/media/video/ov9740.c new file +15 -0

+		ret = ov9740_reg_write_array(client, ov9740_regs_720p,
+					     ARRAY_SIZE(ov9740_regs_720p));
+	} else {
+		dev_err(&client->dev, "Failed to select resolution!\n");
+		return -EINVAL;
+	}
+
+	return ret;
+}
 
+static int ov9740_try_fmt(struct v4l2_subdev *sd,
+			  struct v4l2_mbus_framefmt *mf)
+{
+	ov9740_res_roundup(&mf->width, &mf->height);
+
+	mf->field = V4L2_FIELD_NONE;