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/*
* include/linux/mfd/wm8994/core.h -- Core interface for WM8994
*
* Copyright 2009 Wolfson Microelectronics PLC.
*
* Author: Mark Brown <broonie@opensource.wolfsonmicro.com>
*
* 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 __MFD_WM8994_CORE_H__
#define __MFD_WM8994_CORE_H__
#include <linux/interrupt.h>
struct regulator_dev;
struct regulator_bulk_data;
#define WM8994_NUM_GPIO_REGS 11
#define WM8994_NUM_LDO_REGS 2
#define WM8994_NUM_IRQ_REGS 2
#define WM8994_IRQ_TEMP_SHUT 0
#define WM8994_IRQ_MIC1_DET 1
#define WM8994_IRQ_MIC1_SHRT 2
#define WM8994_IRQ_MIC2_DET 3
#define WM8994_IRQ_MIC2_SHRT 4
#define WM8994_IRQ_FLL1_LOCK 5
#define WM8994_IRQ_FLL2_LOCK 6
#define WM8994_IRQ_SRC1_LOCK 7
#define WM8994_IRQ_SRC2_LOCK 8
#define WM8994_IRQ_AIF1DRC1_SIG_DET 9
#define WM8994_IRQ_AIF1DRC2_SIG_DET 10
#define WM8994_IRQ_AIF2DRC_SIG_DET 11
#define WM8994_IRQ_FIFOS_ERR 12
#define WM8994_IRQ_WSEQ_DONE 13
#define WM8994_IRQ_DCS_DONE 14
#define WM8994_IRQ_TEMP_WARN 15
/* GPIOs in the chip are numbered from 1-11 */
#define WM8994_IRQ_GPIO(x) (x + WM8994_IRQ_TEMP_WARN)
struct wm8994 {
struct mutex io_lock;
struct mutex irq_lock;
struct device *dev;
int (*read_dev)(struct wm8994 *wm8994, unsigned short reg,
int bytes, void *dest);
int (*write_dev)(struct wm8994 *wm8994, unsigned short reg,
int bytes, void *src);
void *control_data;
int gpio_base;
int irq_base;
int irq;
u16 irq_masks_cur[WM8994_NUM_IRQ_REGS];
u16 irq_masks_cache[WM8994_NUM_IRQ_REGS];
/* Used over suspend/resume */
u16 ldo_regs[WM8994_NUM_LDO_REGS];
u16 gpio_regs[WM8994_NUM_GPIO_REGS];
struct regulator_dev *dbvdd;
struct regulator_bulk_data *supplies;
};
/* Device I/O API */
int wm8994_reg_read(struct wm8994 *wm8994, unsigned short reg);
int wm8994_reg_write(struct wm8994 *wm8994, unsigned short reg,
unsigned short val);
int wm8994_set_bits(struct wm8994 *wm8994, unsigned short reg,
unsigned short mask, unsigned short val);
int wm8994_bulk_read(struct wm8994 *wm8994, unsigned short reg,
int count, u16 *buf);
/* Helper to save on boilerplate */
static inline int wm8994_request_irq(struct wm8994 *wm8994, int irq,
irq_handler_t handler, const char *name,
void *data)
{
if (!wm8994->irq_base)
return -EINVAL;
return request_threaded_irq(wm8994->irq_base + irq, NULL, handler,
IRQF_TRIGGER_RISING, name,
data);
}
static inline void wm8994_free_irq(struct wm8994 *wm8994, int irq, void *data)
{
if (!wm8994->irq_base)
return;
free_irq(wm8994->irq_base + irq, data);
}
int wm8994_irq_init(struct wm8994 *wm8994);
void wm8994_irq_exit(struct wm8994 *wm8994);
#endif
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