mfd: Initial max8925 support
Basic Max8925 support, which is a power management IC from Maxim
Semiconductor.
Signed-off-by: Haojian Zhuang <haojian.zhuang@marvell.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
diff --git a/include/linux/mfd/max8925.h b/include/linux/mfd/max8925.h
new file mode 100644
index 0000000..2326246
--- /dev/null
+++ b/include/linux/mfd/max8925.h
@@ -0,0 +1,119 @@
+/*
+ * Maxim8925 Interface
+ *
+ * Copyright (C) 2009 Marvell International Ltd.
+ * Haojian Zhuang <haojian.zhuang@marvell.com>
+ *
+ * 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.
+ */
+
+#ifndef __LINUX_MFD_MAX8925_H
+#define __LINUX_MFD_MAX8925_H
+
+#include <linux/interrupt.h>
+
+/* Charger registers */
+#define MAX8925_CHG_IRQ1 (0x7e)
+#define MAX8925_CHG_IRQ2 (0x7f)
+#define MAX8925_CHG_IRQ1_MASK (0x80)
+#define MAX8925_CHG_IRQ2_MASK (0x81)
+
+/* GPM registers */
+#define MAX8925_SYSENSEL (0x00)
+#define MAX8925_ON_OFF_IRQ1 (0x01)
+#define MAX8925_ON_OFF_IRQ1_MASK (0x02)
+#define MAX8925_ON_OFF_STAT (0x03)
+#define MAX8925_ON_OFF_IRQ2 (0x0d)
+#define MAX8925_ON_OFF_IRQ2_MASK (0x0e)
+#define MAX8925_RESET_CNFG (0x0f)
+
+/* Touch registers */
+#define MAX8925_TSC_IRQ (0x00)
+#define MAX8925_TSC_IRQ_MASK (0x01)
+
+/* RTC registers */
+#define MAX8925_RTC_STATUS (0x1a)
+#define MAX8925_RTC_IRQ (0x1c)
+#define MAX8925_RTC_IRQ_MASK (0x1d)
+
+/* bit definitions */
+#define CHG_IRQ1_MASK (0x07)
+#define CHG_IRQ2_MASK (0xff)
+#define ON_OFF_IRQ1_MASK (0xff)
+#define ON_OFF_IRQ2_MASK (0x03)
+#define TSC_IRQ_MASK (0x03)
+#define RTC_IRQ_MASK (0x0c)
+
+#define MAX8925_NUM_IRQ (32)
+
+#define MAX8925_NAME_SIZE (32)
+
+enum {
+ MAX8925_INVALID = 0,
+ MAX8925_RTC,
+ MAX8925_ADC,
+ MAX8925_GPM, /* general power management */
+ MAX8925_MAX,
+};
+
+#define MAX8925_IRQ_VCHG_OVP (0)
+#define MAX8925_IRQ_VCHG_F (1)
+#define MAX8925_IRQ_VCHG_R (2)
+#define MAX8925_IRQ_VCHG_THM_OK_R (8)
+#define MAX8925_IRQ_VCHG_THM_OK_F (9)
+#define MAX8925_IRQ_VCHG_BATTLOW_F (10)
+#define MAX8925_IRQ_VCHG_BATTLOW_R (11)
+#define MAX8925_IRQ_VCHG_RST (12)
+#define MAX8925_IRQ_VCHG_DONE (13)
+#define MAX8925_IRQ_VCHG_TOPOFF (14)
+#define MAX8925_IRQ_VCHG_TMR_FAULT (15)
+#define MAX8925_IRQ_GPM_RSTIN (16)
+#define MAX8925_IRQ_GPM_MPL (17)
+#define MAX8925_IRQ_GPM_SW_3SEC (18)
+#define MAX8925_IRQ_GPM_EXTON_F (19)
+#define MAX8925_IRQ_GPM_EXTON_R (20)
+#define MAX8925_IRQ_GPM_SW_1SEC (21)
+#define MAX8925_IRQ_GPM_SW_F (22)
+#define MAX8925_IRQ_GPM_SW_R (23)
+#define MAX8925_IRQ_GPM_SYSCKEN_F (24)
+#define MAX8925_IRQ_GPM_SYSCKEN_R (25)
+
+#define MAX8925_IRQ_TSC_STICK (0)
+#define MAX8925_IRQ_TSC_NSTICK (1)
+
+struct max8925_irq {
+ irq_handler_t handler;
+ void *data;
+};
+
+struct max8925_chip {
+ struct device *dev;
+ struct mutex io_lock;
+ struct mutex irq_lock;
+ struct i2c_client *i2c;
+ struct max8925_irq irq[MAX8925_NUM_IRQ];
+
+ const char *name;
+ int chip_id;
+ int chip_irq;
+};
+
+struct max8925_platform_data {
+ int chip_id;
+ int chip_irq;
+};
+
+extern int max8925_reg_read(struct i2c_client *, int);
+extern int max8925_reg_write(struct i2c_client *, int, unsigned char);
+extern int max8925_bulk_read(struct i2c_client *, int, int, unsigned char *);
+extern int max8925_bulk_write(struct i2c_client *, int, int, unsigned char *);
+extern int max8925_set_bits(struct i2c_client *, int, unsigned char,
+ unsigned char);
+
+extern int max8925_device_init(struct max8925_chip *,
+ struct max8925_platform_data *);
+extern void max8925_device_exit(struct max8925_chip *);
+#endif /* __LINUX_MFD_MAX8925_H */
+