[PATCH] w1: Userspace communication protocol over connector.

There are three types of messages between w1 core and userspace:
1. Events. They are generated each time new master or slave device found
	either due to automatic or requested search.
2. Userspace commands. Includes read/write and search/alarm search comamnds.
3. Replies to userspace commands.

From: Evgeniy Polyakov <johnpol@2ka.mipt.ru>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

1 files changed, 28 insertions, 10 deletions

diff --git a/drivers/w1/w1_netlink.h b/drivers/w1/w1_netlink.h
index eb0c8b3152c8..5644221f9a44 100644
--- a/drivers/w1/w1_netlink.h
+++ b/drivers/w1/w1_netlink.h
@@ -23,37 +23,55 @@
 #define __W1_NETLINK_H
 
 #include <asm/types.h>
+#include <linux/connector.h>
 
 #include "w1.h"
 
+#define CN_W1_IDX       3
+#define CN_W1_VAL       1
+
 enum w1_netlink_message_types {
         W1_SLAVE_ADD = 0,
         W1_SLAVE_REMOVE,
         W1_MASTER_ADD,
         W1_MASTER_REMOVE,
+        W1_MASTER_CMD,
+        W1_SLAVE_CMD,
 };
 
 struct w1_netlink_msg
 {
         __u8                            type;
-        __u8                            reserved[3];
-        union
-        {
-                struct w1_reg_num       id;
-                __u64                   w1_id;
-                struct
-                {
+        __u8                            reserved;
+        __u16                           len;
+        union {
+                __u8                    id[8];
+                struct w1_mst {
                         __u32           id;
-                        __u32           pid;
+                        __u32           res;
                 } mst;
         } id;
+        __u8                            data[0];
+};
+
+#define W1_CMD_READ             0x0
+#define W1_CMD_WRITE            0x1
+#define W1_CMD_SEARCH           0x2
+#define W1_CMD_ALARM_SEARCH     0x3
+
+struct w1_netlink_cmd
+{
+        __u8                            cmd;
+        __u8                            res;
+        __u16                           len;
+        __u8                            data[0];
 };
 
 #ifdef __KERNEL__
 
 void w1_netlink_send(struct w1_master *, struct w1_netlink_msg *);
-int dev_init_netlink(struct w1_master *dev);
-void dev_fini_netlink(struct w1_master *dev);
+int w1_init_netlink(void);
+void w1_fini_netlink(void);
 
 #endif /* __KERNEL__ */
 #endif /* __W1_NETLINK_H */