media/drivers/ccs.rst

1 .. SPDX-License-Identifier: GPL-2.0-only
5 MIPI CCS camera sensor driver
8 The MIPI CCS camera sensor driver is a generic driver for `MIPI CCS
9 <https://www.mipi.org/specifications/camera-command-set>`_ compliant
10 camera sensors. It exposes three sub-devices representing the pixel array,
16 Pixel Array sub-device
17 ----------------------
19 The pixel array sub-device represents the camera sensor's pixel matrix, as well
26 ------
28 The binner sub-device represents the binning functionality on the sensor. For
37 ------
39 The scaler sub-device represents the digital crop and scaling functionality of
40 the sensor. The V4L2 selection target ``V4L2_SEL_TGT_CROP`` is used to
45 Additionally, if the scaler sub-device exists, its source pad (1) exposes
50 -------------------------
60 ----------------
65 Analogue gain model
68 The CCS defines an analogue gain model where the gain can be calculated using
71 	gain = m0 * x + c0 / (m1 * x + c1)
81 The analogue gain (``x`` in the formula) is controlled through
84 Alternate analogue gain model
87 The CCS defines another analogue gain model called alternate analogue gain. In
88 this case, the formula to calculate actual gain consists of linear and
91 	gain = linear * 2 ^ exponent