Add the rt linux 4.1.3-rt3 as base

[kvmfornfv.git] / kernel / drivers / i2c / i2c-core.h

diff --git a/kernel/drivers/i2c/i2c-core.h b/kernel/drivers/i2c/i2c-core.h
new file mode 100644 (file)
index 0000000..17700bf
--- /dev/null
+++ b/kernel/drivers/i2c/i2c-core.h
@@ -0,0 +1,29 @@
+/*
+ * i2c-core.h - interfaces internal to the I2C framework
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ */
+
+#include <linux/rwsem.h>
+
+struct i2c_devinfo {
+       struct list_head        list;
+       int                     busnum;
+       struct i2c_board_info   board_info;
+};
+
+/* board_lock protects board_list and first_dynamic_bus_num.
+ * only i2c core components are allowed to use these symbols.
+ */
+extern struct rw_semaphore     __i2c_board_lock;
+extern struct list_head        __i2c_board_list;
+extern int             __i2c_first_dynamic_bus_num;
+