mfd: Janz CMOD-IO PCI MODULbus Carrier Board support

The Janz CMOD-IO PCI MODULbus carrier board is a PCI to MODULbus bridge,
which may host many different types of MODULbus daughterboards, including
CAN and GPIO controllers.

Signed-off-by: Ira W. Snyder <iws@ovro.caltech.edu>
Reviewed-by: Wolfgang Grandegger <wg@grandegger.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>

1 files changed, 54 insertions, 0 deletions

diff --git a/include/linux/mfd/janz.h b/include/linux/mfd/janz.h
new file mode 100644
index 000000000000..e9994c469803
--- /dev/null
+++ b/include/linux/mfd/janz.h
@@ -0,0 +1,54 @@
+/*
+ * Common Definitions for Janz MODULbus devices
+ *
+ * Copyright (c) 2010 Ira W. Snyder <iws@ovro.caltech.edu>
+ *
+ * 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.
+ */
+
+#ifndef JANZ_H
+#define JANZ_H
+
+struct janz_platform_data {
+        /* MODULbus Module Number */
+        unsigned int modno;
+};
+
+/* PLX bridge chip onboard registers */
+struct janz_cmodio_onboard_regs {
+        u8 unused1;
+
+        /*
+         * Read access: interrupt status
+         * Write access: interrupt disable
+         */
+        u8 int_disable;
+        u8 unused2;
+
+        /*
+         * Read access: MODULbus number (hex switch)
+         * Write access: interrupt enable
+         */
+        u8 int_enable;
+        u8 unused3;
+
+        /* write-only */
+        u8 reset_assert;
+        u8 unused4;
+
+        /* write-only */
+        u8 reset_deassert;
+        u8 unused5;
+
+        /* read-write access to serial EEPROM */
+        u8 eep;
+        u8 unused6;
+
+        /* write-only access to EEPROM chip select */
+        u8 enid;
+};
+
+#endif /* JANZ_H */