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>

diff --git a/Documentation/w1/slaves/w1_therm b/Documentation/w1/slaves/w1_therm
index 0403aaa..874a8ca 100644 (file)
--- a/Documentation/w1/slaves/w1_therm
+++ b/Documentation/w1/slaves/w1_therm
@@ -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

diff --git a/drivers/w1/slaves/w1_therm.c b/drivers/w1/slaves/w1_therm.c
index d90062b..92d08e7 100644 (file)
--- a/drivers/w1/slaves/w1_therm.c
+++ b/drivers/w1/slaves/w1_therm.c
@@ -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])

diff --git a/drivers/w1/w1_family.h b/drivers/w1/w1_family.h
index b00ada4..a1f0ce1 100644 (file)
--- a/drivers/w1/w1_family.h
+++ b/drivers/w1/w1_family.h
@@ -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