[PATCH] W1: Add the DS2482 I2C-to-w1 bridge driver.

Signed-off-by: Ben Gardner <bgardner@wabtec.com>
Signed-off-by: Evgeniy Polyakov <johnpol@2ka.mipt.ru>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

Documentation/w1/masters/ds2482

@@ -0,0 +1,31 @@
+Kernel driver ds2482
+====================
+
+Supported chips:
+  * Maxim DS2482-100, Maxim DS2482-800
+    Prefix: 'ds2482'
+    Addresses scanned: None
+    Datasheets:
+        http://pdfserv.maxim-ic.com/en/ds/DS2482-100-DS2482S-100.pdf
+        http://pdfserv.maxim-ic.com/en/ds/DS2482-800-DS2482S-800.pdf
+
+Author: Ben Gardner <bgardner@wabtec.com>
+
+
+Description
+-----------
+
+The Maixm/Dallas Semiconductor DS2482 is a I2C device that provides
+one (DS2482-100) or eight (DS2482-800) 1-wire busses.
+
+
+General Remarks
+---------------
+
+Valid addresses are 0x18, 0x19, 0x1a, and 0x1b.
+However, the device cannot be detected without writing to the i2c bus, so no
+detection is done.
+You should force the device address.
+
+$ modprobe ds2482 force=0,0x18
+

drivers/w1/masters/Kconfig

@@ -34,5 +34,15 @@ config W1_MASTER_DS9490_BRIDGE
 	  This support is also available as a module.  If so, the module
 	  will be called ds_w1_bridge.ko.
 
+config W1_MASTER_DS2482
+	tristate "Maxim DS2482 I2C to 1-Wire bridge"
+	depends on I2C && W1 && EXPERIMENTAL
+	help
+	  If you say yes here you get support for the Maxim DS2482
+	  I2C to 1-Wire bridge.
+
+	  This driver can also be built as a module.  If so, the module
+	  will be called ds2482.
+
 endmenu
 

drivers/w1/masters/Makefile

@@ -9,3 +9,5 @@ ds9490r-objs    := dscore.o
 
 obj-$(CONFIG_W1_MASTER_DS9490_BRIDGE)	+= ds_w1_bridge.o
 
+obj-$(CONFIG_W1_MASTER_DS2482)		+= ds2482.o
+