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authorThomas Bogendoerfer <tbogendoerfer@suse.de>2019-08-31 11:26:21 +0300
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2019-09-04 15:34:31 +0300
commit74ded38a8e185b57a4362787815c353ac595013c (patch)
tree801f3108756dd1ff3719fa02753cddc9596f5cea /include/linux/w1.h
parent836e9494f4485127a5b505ae57e4387bea8b53c4 (diff)
downloadlinux-74ded38a8e185b57a4362787815c353ac595013c.tar.xz
w1: add 1-wire master driver for IP block found in SGI ASICs
Starting with SGI Origin machines nearly every new SGI ASIC contains an 1-Wire master. They are used for attaching One-Wire prom devices, which contain information about part numbers, revision numbers, serial number etc. and MAC addresses for ethernet interfaces. This patch adds a master driver to support this IP block. It also adds an extra field dev_id to struct w1_bus_master, which could be in used in slave drivers for creating unique device names. Signed-off-by: Thomas Bogendoerfer <tbogendoerfer@suse.de> Link: https://lore.kernel.org/r/20190831082623.15627-2-tbogendoerfer@suse.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'include/linux/w1.h')
-rw-r--r--include/linux/w1.h5
1 files changed, 5 insertions, 0 deletions
diff --git a/include/linux/w1.h b/include/linux/w1.h
index e0b5156f78fd..7da0c7588e04 100644
--- a/include/linux/w1.h
+++ b/include/linux/w1.h
@@ -118,6 +118,9 @@ typedef void (*w1_slave_found_callback)(struct w1_master *, u64);
* w1_master* is passed to the slave found callback.
* u8 is search_type, W1_SEARCH or W1_ALARM_SEARCH
*
+ * @dev_id: Optional device id string, which w1 slaves could use for
+ * creating names, which then give a connection to the w1 master
+ *
* Note: read_bit and write_bit are very low level functions and should only
* be used with hardware that doesn't really support 1-wire operations,
* like a parallel/serial port.
@@ -150,6 +153,8 @@ struct w1_bus_master {
void (*search)(void *, struct w1_master *,
u8, w1_slave_found_callback);
+
+ char *dev_id;
};
/**