regulator: Add WM8400 regulator support

The WM8400 provides two programmable DCDC step-down (buck) convertors
and four low-dropout (LDO) regulators. This driver provides support for
runtime managment of these in the standard regulator API.

Support for configuration of the suspend and hibernate mode behaviour
of the regulators is not yet included.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Liam Girdwood <lrg@slimlogic.co.uk>

2 files changed, 41 insertions, 0 deletions

diff --git a/include/linux/mfd/wm8400-private.h b/include/linux/mfd/wm8400-private.h
index 49042e9..2aab4e9 100644
--- a/include/linux/mfd/wm8400-private.h
+++ b/include/linux/mfd/wm8400-private.h
@@ -21,6 +21,7 @@
 #ifndef __LINUX_MFD_WM8400_PRIV_H
 #define __LINUX_MFD_WM8400_PRIV_H
 
+#include <linux/mfd/wm8400.h>
 #include <linux/mutex.h>
 #include <linux/platform_device.h>
 
diff --git a/include/linux/mfd/wm8400.h b/include/linux/mfd/wm8400.h
new file mode 100644
index 0000000..b46b566
--- /dev/null
+++ b/include/linux/mfd/wm8400.h
@@ -0,0 +1,40 @@
+/*
+ * wm8400 client interface
+ *
+ * Copyright 2008 Wolfson Microelectronics plc
+ *
+ * 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.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+#ifndef __LINUX_MFD_WM8400_H
+#define __LINUX_MFD_WM8400_H
+
+#include <linux/regulator/machine.h>
+
+#define WM8400_LDO1  0
+#define WM8400_LDO2  1
+#define WM8400_LDO3  2
+#define WM8400_LDO4  3
+#define WM8400_DCDC1 4
+#define WM8400_DCDC2 5
+
+struct wm8400_platform_data {
+	int (*platform_init)(struct device *dev);
+};
+
+int wm8400_register_regulator(struct device *dev, int reg,
+			      struct regulator_init_data *initdata);
+
+#endif