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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: Raphael Assenat <raph@8d.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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1 parent f3d9d36 commit f3261dfb5538e2ff0264fde3050dbd4e922fa296 Raphael Assenat committed with gregkh Aug 16, 2012
Showing with 12 additions and 0 deletions.
  1. +2 −0 Documentation/w1/slaves/w1_therm
  2. +9 −0 drivers/w1/slaves/w1_therm.c
  3. +1 −0 drivers/w1/w1_family.h
@@ -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
@@ -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])
@@ -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

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