Donate to e Foundation | Murena handsets with /e/OS | Own a part of Murena! Learn more

Commit f3261dfb authored by Raphael Assenat's avatar Raphael Assenat Committed by Greg Kroah-Hartman
Browse files

1-Wire: Add support for the maxim ds1825 temperature sensor 



This patch adds support for maxim ds1825 based 1-wire temperature sensors.

Signed-off-by: default avatarRaphael Assenat <raph@8d.com>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent f3d9d365

Documentation/w1/slaves/w1_therm

+2 −0
Original line number Diff line number Diff line
@@ -3,6 +3,7 @@ Kernel driver w1_therm 


Supported chips:

  * Maxim ds18*20 based temperature sensors.

  * Maxim ds1825 based temperature sensors.



Author: Evgeniy Polyakov <johnpol@2ka.mipt.ru>
@@ -15,6 +16,7 @@ supported family codes: 
W1_THERM_DS18S20	0x10

W1_THERM_DS1822		0x22

W1_THERM_DS18B20	0x28

W1_THERM_DS1825		0x3B



Support is provided through the sysfs w1_slave file.  Each open and

read sequence will initiate a temperature conversion then provide two

drivers/w1/slaves/w1_therm.c

+9 −0
Original line number Diff line number Diff line
@@ -91,6 +91,11 @@ static struct w1_family w1_therm_family_DS28EA00 = { 
	.fops = &w1_therm_fops,

};



static struct w1_family w1_therm_family_DS1825 = {

	.fid = W1_THERM_DS1825,

	.fops = &w1_therm_fops,

};



struct w1_therm_family_converter

{

	u8			broken;
@@ -120,6 +125,10 @@ static struct w1_therm_family_converter w1_therm_families[] = { 
		.f		= &w1_therm_family_DS28EA00,

		.convert	= w1_DS18B20_convert_temp

	},

	{

		.f		= &w1_therm_family_DS1825,

		.convert	= w1_DS18B20_convert_temp

	}

};



static inline int w1_DS18B20_convert_temp(u8 rom[9])

drivers/w1/w1_family.h

+1 −0
Original line number Diff line number Diff line
@@ -39,6 +39,7 @@ 
#define W1_EEPROM_DS2431	0x2D

#define W1_FAMILY_DS2760	0x30

#define W1_FAMILY_DS2780	0x32

#define W1_THERM_DS1825		0x3B

#define W1_FAMILY_DS2781	0x3D

#define W1_THERM_DS28EA00	0x42