mfd: Add Qualcomm PMIC 8921 core driver

Add support for the Qualcomm PM8921 PMIC chip. The core driver
will communicate with the PMIC chip via the MSM SSBI bus.

Signed-off-by: Abhijeet Dharmapurikar <adharmap@codeaurora.org>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>

2 files changed, 98 insertions, 0 deletions

diff --git a/include/linux/mfd/pm8xxx/core.h b/include/linux/mfd/pm8xxx/core.h
new file mode 100644
index 00000000000..36ccb33332e
--- /dev/null
+++ b/include/linux/mfd/pm8xxx/core.h
@@ -0,0 +1,71 @@
+/*
+ * Copyright (c) 2011, Code Aurora Forum. All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 and
+ * only 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.
+ */
+/*
+ * Qualcomm PMIC 8xxx driver header file
+ *
+ */
+
+#ifndef __MFD_PM8XXX_CORE_H
+#define __MFD_PM8XXX_CORE_H
+
+#include <linux/mfd/core.h>
+
+struct pm8xxx_drvdata {
+	int	(*pmic_readb) (const struct device *dev, u16 addr, u8 *val);
+	int	(*pmic_writeb) (const struct device *dev, u16 addr, u8 val);
+	int	(*pmic_read_buf) (const struct device *dev, u16 addr, u8 *buf,
+									int n);
+	int	(*pmic_write_buf) (const struct device *dev, u16 addr, u8 *buf,
+									int n);
+	void	*pm_chip_data;
+};
+
+static inline int pm8xxx_readb(const struct device *dev, u16 addr, u8 *val)
+{
+	struct pm8xxx_drvdata *dd = dev_get_drvdata(dev);
+
+	if (!dd)
+		return -EINVAL;
+	return dd->pmic_readb(dev, addr, val);
+}
+
+static inline int pm8xxx_writeb(const struct device *dev, u16 addr, u8 val)
+{
+	struct pm8xxx_drvdata *dd = dev_get_drvdata(dev);
+
+	if (!dd)
+		return -EINVAL;
+	return dd->pmic_writeb(dev, addr, val);
+}
+
+static inline int pm8xxx_read_buf(const struct device *dev, u16 addr, u8 *buf,
+									int n)
+{
+	struct pm8xxx_drvdata *dd = dev_get_drvdata(dev);
+
+	if (!dd)
+		return -EINVAL;
+	return dd->pmic_read_buf(dev, addr, buf, n);
+}
+
+static inline int pm8xxx_write_buf(const struct device *dev, u16 addr, u8 *buf,
+									int n)
+{
+	struct pm8xxx_drvdata *dd = dev_get_drvdata(dev);
+
+	if (!dd)
+		return -EINVAL;
+	return dd->pmic_write_buf(dev, addr, buf, n);
+}
+
+#endif
diff --git a/include/linux/mfd/pm8xxx/pm8921.h b/include/linux/mfd/pm8xxx/pm8921.h
new file mode 100644
index 00000000000..33fbe9c960a
--- /dev/null
+++ b/include/linux/mfd/pm8xxx/pm8921.h
@@ -0,0 +1,27 @@
+/*
+ * Copyright (c) 2011, Code Aurora Forum. All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 and
+ * only 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.
+ */
+/*
+ * Qualcomm PMIC 8921 driver header file
+ *
+ */
+
+#ifndef __MFD_PM8921_H
+#define __MFD_PM8921_H
+
+#include <linux/device.h>
+
+struct pm8921_platform_data {
+	int					irq_base;
+};
+
+#endif