Orange Pi5 kernel

^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  1) What:		/sys/bus/iio/devices/iio:deviceX/in_proximity0_agc_gain
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  2) What:		/sys/bus/iio/devices/iio:deviceX/in_proximity0_agc_gain_bias
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  3) KernelVersion:	4.18
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  4) Contact:	linux-iio@vger.kernel.org
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  5) Description:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  6) 		This sensor has an automatic gain control (agc) loop
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  7) 		which sets the analog signal levels at an optimum
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  8) 		level by controlling programmable gain amplifiers. The
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  9) 		criteria for optimal gain is determined by the sensor.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) 		Return the actual gain value as an integer in [0; 65536]
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) 		range when read from.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) 		The agc gain read when measuring crosstalk shall be
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) 		written into in_proximity0_agc_gain_bias.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) What:		/sys/bus/iio/devices/iio:deviceX/in_proximity0_calib_phase_temp_a
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) What:		/sys/bus/iio/devices/iio:deviceX/in_proximity0_calib_phase_temp_b
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) What:		/sys/bus/iio/devices/iio:deviceX/in_proximity0_calib_phase_light_a
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) What:		/sys/bus/iio/devices/iio:deviceX/in_proximity0_calib_phase_light_b
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) KernelVersion:	4.18
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) Contact:	linux-iio@vger.kernel.org
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) Description:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) 		The sensor is able to perform correction of distance
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) 		measurements due to changing temperature and ambient
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) 		light conditions. It can be programmed to correct for
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) 		a second order error polynomial.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) 		Phase data has to be collected when temperature and
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) 		ambient light are modulated independently.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) 		Then a least squares curve fit to a second order
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) 		polynomial has to be generated from the data. The
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) 		resultant curves have the form ax^2 + bx + c.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) 		From those two curves, a and b coefficients shall be
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) 		stored in in_proximity0_calib_phase_temp_a and
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) 		in_proximity0_calib_phase_temp_b for temperature and
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) 		in in_proximity0_calib_phase_light_a and
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) 		in_proximity0_calib_phase_light_b for ambient light.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) 		Those values must be integer in [0; 8355840] range.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) 		Finally, the c constant is set by the sensor
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) 		internally.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) 		The value stored in sensor is displayed when read from.