drivers/fsi: Add empty fsi bus definitions

This change adds the initial (empty) fsi bus definition, and introduces
drivers/fsi/.

Signed-off-by: Jeremy Kerr <jk@ozlabs.org>
Signed-off-by: Chris Bostic <cbostic@us.ibm.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/Kconfig b/drivers/Kconfig
index e1e2066cecdb602e44f4a7103aa35827da9bbdd5..117ca14ccf8595813841585719790c7ac89d7e84 100644 (file)
--- a/drivers/Kconfig
+++ b/drivers/Kconfig
@@ -202,4 +202,6 @@ source "drivers/hwtracing/intel_th/Kconfig"
 
 source "drivers/fpga/Kconfig"
 
+source "drivers/fsi/Kconfig"
+
 endmenu

diff --git a/drivers/Makefile b/drivers/Makefile
index 060026a02f59246362aa9be2adb95b1304efe710..67ce51d62015835e56a08930f6e5e276e6d7e32e 100644 (file)
--- a/drivers/Makefile
+++ b/drivers/Makefile
@@ -173,3 +173,4 @@ obj-$(CONFIG_STM)           += hwtracing/stm/
 obj-$(CONFIG_ANDROID)          += android/
 obj-$(CONFIG_NVMEM)            += nvmem/
 obj-$(CONFIG_FPGA)             += fpga/
+obj-$(CONFIG_FSI)              += fsi/

diff --git a/drivers/fsi/Kconfig b/drivers/fsi/Kconfig
new file mode 100644 (file)
index 0000000..04c1a0e
--- /dev/null
+++ b/drivers/fsi/Kconfig
@@ -0,0 +1,12 @@
+#
+# FSI subsystem
+#
+
+menu "FSI support"
+
+config FSI
+       tristate "FSI support"
+       ---help---
+         FSI - the FRU Support Interface - is a simple bus for low-level
+         access to POWER-based hardware.
+endmenu

diff --git a/drivers/fsi/Makefile b/drivers/fsi/Makefile
new file mode 100644 (file)
index 0000000..db0e5e7
--- /dev/null
+++ b/drivers/fsi/Makefile
@@ -0,0 +1,2 @@
+
+obj-$(CONFIG_FSI) += fsi-core.o

diff --git a/drivers/fsi/fsi-core.c b/drivers/fsi/fsi-core.c
new file mode 100644 (file)
index 0000000..3e45306
--- /dev/null
+++ b/drivers/fsi/fsi-core.c
@@ -0,0 +1,38 @@
+/*
+ * FSI core driver
+ *
+ * Copyright (C) IBM Corporation 2016
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * 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/device.h>
+#include <linux/fsi.h>
+#include <linux/module.h>
+
+/* FSI core & Linux bus type definitions */
+
+struct bus_type fsi_bus_type = {
+       .name           = "fsi",
+};
+EXPORT_SYMBOL_GPL(fsi_bus_type);
+
+static int fsi_init(void)
+{
+       return bus_register(&fsi_bus_type);
+}
+
+static void fsi_exit(void)
+{
+       bus_unregister(&fsi_bus_type);
+}
+
+module_init(fsi_init);
+module_exit(fsi_exit);

diff --git a/include/linux/fsi.h b/include/linux/fsi.h
new file mode 100644 (file)
index 0000000..47aa181
--- /dev/null
+++ b/include/linux/fsi.h
@@ -0,0 +1,22 @@
+/* FSI device & driver interfaces
+ *
+ * Copyright (C) IBM Corporation 2016
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * 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.
+ */
+
+#ifndef LINUX_FSI_H
+#define LINUX_FSI_H
+
+#include <linux/device.h>
+
+extern struct bus_type fsi_bus_type;
+
+#endif /* LINUX_FSI_H */