Commit 08fae079 authored by Mauro Carvalho Chehab's avatar Mauro Carvalho Chehab Committed by Guenter Roeck
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docs: hwmon: da9052, da9055: convert to ReST format 



Convert da9052 and da9055 to ReST format, in order to allow
them to be parsed by Sphinx.

Signed-off-by: default avatarMauro Carvalho Chehab <mchehab+samsung@kernel.org>
Signed-off-by: default avatarGuenter Roeck <linux@roeck-us.net>
parent 4f1158b3

Documentation/hwmon/da9052

+29 −12
Original line number Diff line number Diff line 
Kernel driver da9052

====================



Supported chips:



  * Dialog Semiconductors DA9052-BC and DA9053-AA/Bx PMICs



    Prefix: 'da9052'



    Datasheet: Datasheet is not publicly available.



Authors: David Dajun Chen <dchen@diasemi.com>
@@ -15,17 +21,20 @@ different inputs. The track and hold circuit ensures stable input voltages at 
the input of the ADC during the conversion.



The ADC is used to measure the following inputs:

Channel 0: VDDOUT - measurement of the system voltage

Channel 1: ICH - internal battery charger current measurement

Channel 2: TBAT - output from the battery NTC

Channel 3: VBAT - measurement of the battery voltage

Channel 4: ADC_IN4 - high impedance input (0 - 2.5V)

Channel 5: ADC_IN5 - high impedance input (0 - 2.5V)

Channel 6: ADC_IN6 - high impedance input (0 - 2.5V)

Channel 7: XY - TSI interface to measure the X and Y voltage of the touch



========= ===================================================================

Channel 0 VDDOUT - measurement of the system voltage

Channel 1 ICH - internal battery charger current measurement

Channel 2 TBAT - output from the battery NTC

Channel 3 VBAT - measurement of the battery voltage

Channel 4 ADC_IN4 - high impedance input (0 - 2.5V)

Channel 5 ADC_IN5 - high impedance input (0 - 2.5V)

Channel 6 ADC_IN6 - high impedance input (0 - 2.5V)

Channel 7 XY - TSI interface to measure the X and Y voltage of the touch

	  screen resistive potentiometers

Channel 8: Internal Tjunc. - sense (internal temp. sensor)

Channel 9: VBBAT - measurement of the backup battery voltage

Channel 8 Internal Tjunc. - sense (internal temp. sensor)

Channel 9 VBBAT - measurement of the backup battery voltage

========= ===================================================================



By using sysfs attributes we can measure the system voltage VDDOUT, the battery

charging current ICH, battery temperature TBAT, battery junction temperature
@@ -37,12 +46,15 @@ Voltage Monitoring 
Voltages are sampled by a 10 bit ADC.



The battery voltage is calculated as:



	Milli volt = ((ADC value * 1000) / 512) + 2500



The backup battery voltage is calculated as:



	Milli volt = (ADC value * 2500) / 512;



The voltages on ADC channels 4, 5 and 6 are calculated as:



	Milli volt = (ADC value * 2500) / 1023



Temperature Monitoring
@@ -52,10 +64,15 @@ Temperatures are sampled by a 10 bit ADC. Junction and battery temperatures 
are monitored by the ADC channels.



The junction temperature is calculated:



	Degrees celsius = 1.708 * (TJUNC_RES - T_OFFSET) - 108.8



The junction temperature attribute is supported by the driver.



The battery temperature is calculated:



	Degree Celsius = 1 / (t1 + 1/298) - 273



where t1 = (1/B)* ln(( ADCval * 2.5)/(R25*ITBAT*255))



Default values of R25, B, ITBAT are 10e3, 3380 and 50e-6 respectively.

Documentation/hwmon/da9055

+15 −5
Original line number Diff line number Diff line 
Kernel driver da9055

====================



Supported chips:

  * Dialog Semiconductors DA9055 PMIC



    Prefix: 'da9055'



    Datasheet: Datasheet is not publicly available.



Authors: David Dajun Chen <dchen@diasemi.com>
@@ -15,11 +20,12 @@ different inputs. The track and hold circuit ensures stable input voltages at 
the input of the ADC during the conversion.



The ADC is used to measure the following inputs:

Channel 0: VDDOUT - measurement of the system voltage

Channel 1: ADC_IN1 - high impedance input (0 - 2.5V)

Channel 2: ADC_IN2 - high impedance input (0 - 2.5V)

Channel 3: ADC_IN3 - high impedance input (0 - 2.5V)

Channel 4: Internal Tjunc. - sense (internal temp. sensor)



- Channel 0: VDDOUT - measurement of the system voltage

- Channel 1: ADC_IN1 - high impedance input (0 - 2.5V)

- Channel 2: ADC_IN2 - high impedance input (0 - 2.5V)

- Channel 3: ADC_IN3 - high impedance input (0 - 2.5V)

- Channel 4: Internal Tjunc. - sense (internal temp. sensor)



By using sysfs attributes we can measure the system voltage VDDOUT,

chip junction temperature and auxiliary channels voltages.
@@ -31,9 +37,11 @@ Voltages are sampled in a AUTO mode it can be manually sampled too and results 
are stored in a 10 bit ADC.



The system voltage is calculated as:



	Milli volt = ((ADC value * 1000) / 85) + 2500



The voltages on ADC channels 1, 2 and 3 are calculated as:



	Milli volt = (ADC value * 1000) / 102



Temperature Monitoring
@@ -43,5 +51,7 @@ Temperatures are sampled by a 10 bit ADC. Junction temperatures 
are monitored by the ADC channels.



The junction temperature is calculated:



	Degrees celsius = -0.4084 * (ADC_RES - T_OFFSET) + 307.6332



The junction temperature attribute is supported by the driver.