mfd: PCF50633 core driver

This patch implements the core of the PCF50633 driver. This core driver has
generic register read/write functions and does interrupt management for its
sub devices.

Signed-off-by: Balaji Rao <balajirrao@openmoko.org>
Cc: Andy Green <andy@openmoko.com>
Signed-off-by: Samuel Ortiz <sameo@openedhand.com>

1 files changed, 218 insertions, 0 deletions

diff --git a/include/linux/mfd/pcf50633/core.h b/include/linux/mfd/pcf50633/core.h
new file mode 100644
index 000000000000..4455b212d75a
--- /dev/null
+++ b/include/linux/mfd/pcf50633/core.h
@@ -0,0 +1,218 @@
+/*
+ * core.h  -- Core driver for NXP PCF50633
+ *
+ * (C) 2006-2008 by Openmoko, Inc.
+ * 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 as published by the
+ * Free Software Foundation;  either version 2 of the  License, or (at your
+ * option) any later version.
+ */
+
+#ifndef __LINUX_MFD_PCF50633_CORE_H
+#define __LINUX_MFD_PCF50633_CORE_H
+
+#include <linux/i2c.h>
+#include <linux/workqueue.h>
+#include <linux/regulator/driver.h>
+#include <linux/regulator/machine.h>
+#include <linux/power_supply.h>
+
+struct pcf50633;
+
+#define PCF50633_NUM_REGULATORS 11
+
+struct pcf50633_platform_data {
+        struct regulator_init_data reg_init_data[PCF50633_NUM_REGULATORS];
+
+        char **batteries;
+        int num_batteries;
+
+        /* Callbacks */
+        void (*probe_done)(struct pcf50633 *);
+        void (*mbc_event_callback)(struct pcf50633 *, int);
+        void (*regulator_registered)(struct pcf50633 *, int);
+        void (*force_shutdown)(struct pcf50633 *);
+
+        u8 resumers[5];
+};
+
+struct pcf50633_subdev_pdata {
+        struct pcf50633 *pcf;
+};
+
+struct pcf50633_irq {
+        void (*handler) (int, void *);
+        void *data;
+};
+
+int pcf50633_register_irq(struct pcf50633 *pcf, int irq,
+                        void (*handler) (int, void *), void *data);
+int pcf50633_free_irq(struct pcf50633 *pcf, int irq);
+
+int pcf50633_irq_mask(struct pcf50633 *pcf, int irq);
+int pcf50633_irq_unmask(struct pcf50633 *pcf, int irq);
+int pcf50633_irq_mask_get(struct pcf50633 *pcf, int irq);
+
+int pcf50633_read_block(struct pcf50633 *, u8 reg,
+                                        int nr_regs, u8 *data);
+int pcf50633_write_block(struct pcf50633 *pcf, u8 reg,
+                                        int nr_regs, u8 *data);
+u8 pcf50633_reg_read(struct pcf50633 *, u8 reg);
+int pcf50633_reg_write(struct pcf50633 *pcf, u8 reg, u8 val);
+
+int pcf50633_reg_set_bit_mask(struct pcf50633 *pcf, u8 reg, u8 mask, u8 val);
+int pcf50633_reg_clear_bits(struct pcf50633 *pcf, u8 reg, u8 bits);
+
+/* Interrupt registers */
+
+#define PCF50633_REG_INT1       0x02
+#define PCF50633_REG_INT2       0x03
+#define PCF50633_REG_INT3       0x04
+#define PCF50633_REG_INT4       0x05
+#define PCF50633_REG_INT5       0x06
+
+#define PCF50633_REG_INT1M      0x07
+#define PCF50633_REG_INT2M      0x08
+#define PCF50633_REG_INT3M      0x09
+#define PCF50633_REG_INT4M      0x0a
+#define PCF50633_REG_INT5M      0x0b
+
+enum {
+        /* Chip IRQs */
+        PCF50633_IRQ_ADPINS,
+        PCF50633_IRQ_ADPREM,
+        PCF50633_IRQ_USBINS,
+        PCF50633_IRQ_USBREM,
+        PCF50633_IRQ_RESERVED1,
+        PCF50633_IRQ_RESERVED2,
+        PCF50633_IRQ_ALARM,
+        PCF50633_IRQ_SECOND,
+        PCF50633_IRQ_ONKEYR,
+        PCF50633_IRQ_ONKEYF,
+        PCF50633_IRQ_EXTON1R,
+        PCF50633_IRQ_EXTON1F,
+        PCF50633_IRQ_EXTON2R,
+        PCF50633_IRQ_EXTON2F,
+        PCF50633_IRQ_EXTON3R,
+        PCF50633_IRQ_EXTON3F,
+        PCF50633_IRQ_BATFULL,
+        PCF50633_IRQ_CHGHALT,
+        PCF50633_IRQ_THLIMON,
+        PCF50633_IRQ_THLIMOFF,
+        PCF50633_IRQ_USBLIMON,
+        PCF50633_IRQ_USBLIMOFF,
+        PCF50633_IRQ_ADCRDY,
+        PCF50633_IRQ_ONKEY1S,
+        PCF50633_IRQ_LOWSYS,
+        PCF50633_IRQ_LOWBAT,
+        PCF50633_IRQ_HIGHTMP,
+        PCF50633_IRQ_AUTOPWRFAIL,
+        PCF50633_IRQ_DWN1PWRFAIL,
+        PCF50633_IRQ_DWN2PWRFAIL,
+        PCF50633_IRQ_LEDPWRFAIL,
+        PCF50633_IRQ_LEDOVP,
+        PCF50633_IRQ_LDO1PWRFAIL,
+        PCF50633_IRQ_LDO2PWRFAIL,
+        PCF50633_IRQ_LDO3PWRFAIL,
+        PCF50633_IRQ_LDO4PWRFAIL,
+        PCF50633_IRQ_LDO5PWRFAIL,
+        PCF50633_IRQ_LDO6PWRFAIL,
+        PCF50633_IRQ_HCLDOPWRFAIL,
+        PCF50633_IRQ_HCLDOOVL,
+
+        /* Always last */
+        PCF50633_NUM_IRQ,
+};
+
+struct pcf50633 {
+        struct device *dev;
+        struct i2c_client *i2c_client;
+
+        struct pcf50633_platform_data *pdata;
+        int irq;
+        struct pcf50633_irq irq_handler[PCF50633_NUM_IRQ];
+        struct work_struct irq_work;
+        struct mutex lock;
+
+        u8 mask_regs[5];
+
+        u8 suspend_irq_masks[5];
+        u8 resume_reason[5];
+        int is_suspended;
+
+        int onkey1s_held;
+
+        struct platform_device *rtc_pdev;
+        struct platform_device *mbc_pdev;
+        struct platform_device *adc_pdev;
+        struct platform_device *input_pdev;
+        struct platform_device *regulator_pdev[PCF50633_NUM_REGULATORS];
+};
+
+enum pcf50633_reg_int1 {
+        PCF50633_INT1_ADPINS    = 0x01, /* Adapter inserted */
+        PCF50633_INT1_ADPREM    = 0x02, /* Adapter removed */
+        PCF50633_INT1_USBINS    = 0x04, /* USB inserted */
+        PCF50633_INT1_USBREM    = 0x08, /* USB removed */
+        /* reserved */
+        PCF50633_INT1_ALARM     = 0x40, /* RTC alarm time is reached */
+        PCF50633_INT1_SECOND    = 0x80, /* RTC periodic second interrupt */
+};
+
+enum pcf50633_reg_int2 {
+        PCF50633_INT2_ONKEYR    = 0x01, /* ONKEY rising edge */
+        PCF50633_INT2_ONKEYF    = 0x02, /* ONKEY falling edge */
+        PCF50633_INT2_EXTON1R   = 0x04, /* EXTON1 rising edge */
+        PCF50633_INT2_EXTON1F   = 0x08, /* EXTON1 falling edge */
+        PCF50633_INT2_EXTON2R   = 0x10, /* EXTON2 rising edge */
+        PCF50633_INT2_EXTON2F   = 0x20, /* EXTON2 falling edge */
+        PCF50633_INT2_EXTON3R   = 0x40, /* EXTON3 rising edge */
+        PCF50633_INT2_EXTON3F   = 0x80, /* EXTON3 falling edge */
+};
+
+enum pcf50633_reg_int3 {
+        PCF50633_INT3_BATFULL   = 0x01, /* Battery full */
+        PCF50633_INT3_CHGHALT   = 0x02, /* Charger halt */
+        PCF50633_INT3_THLIMON   = 0x04,
+        PCF50633_INT3_THLIMOFF  = 0x08,
+        PCF50633_INT3_USBLIMON  = 0x10,
+        PCF50633_INT3_USBLIMOFF = 0x20,
+        PCF50633_INT3_ADCRDY    = 0x40, /* ADC result ready */
+        PCF50633_INT3_ONKEY1S   = 0x80, /* ONKEY pressed 1 second */
+};
+
+enum pcf50633_reg_int4 {
+        PCF50633_INT4_LOWSYS            = 0x01,
+        PCF50633_INT4_LOWBAT            = 0x02,
+        PCF50633_INT4_HIGHTMP           = 0x04,
+        PCF50633_INT4_AUTOPWRFAIL       = 0x08,
+        PCF50633_INT4_DWN1PWRFAIL       = 0x10,
+        PCF50633_INT4_DWN2PWRFAIL       = 0x20,
+        PCF50633_INT4_LEDPWRFAIL        = 0x40,
+        PCF50633_INT4_LEDOVP            = 0x80,
+};
+
+enum pcf50633_reg_int5 {
+        PCF50633_INT5_LDO1PWRFAIL       = 0x01,
+        PCF50633_INT5_LDO2PWRFAIL       = 0x02,
+        PCF50633_INT5_LDO3PWRFAIL       = 0x04,
+        PCF50633_INT5_LDO4PWRFAIL       = 0x08,
+        PCF50633_INT5_LDO5PWRFAIL       = 0x10,
+        PCF50633_INT5_LDO6PWRFAIL       = 0x20,
+        PCF50633_INT5_HCLDOPWRFAIL      = 0x40,
+        PCF50633_INT5_HCLDOOVL          = 0x80,
+};
+
+/* misc. registers */
+#define PCF50633_REG_OOCSHDWN   0x0c
+
+/* LED registers */
+#define PCF50633_REG_LEDOUT 0x28
+#define PCF50633_REG_LEDENA 0x29
+#define PCF50633_REG_LEDCTL 0x2a
+#define PCF50633_REG_LEDDIM 0x2b
+
+#endif
+