LXR linux/include/linux/mfd/wm8994/core.h

   1/*
   2 * include/linux/mfd/wm8994/core.h -- Core interface for WM8994
   3 *
   4 * Copyright 2009 Wolfson Microelectronics PLC.
   5 *
   6 * Author: Mark Brown <broonie@opensource.wolfsonmicro.com>
   7 *
   8 *  This program is free software; you can redistribute  it and/or modify it
   9 *  under  the terms of  the GNU General  Public License as published by the
  10 *  Free Software Foundation;  either version 2 of the  License, or (at your
  11 *  option) any later version.
  12 *
  13 */
  14
  15#ifndef __MFD_WM8994_CORE_H__
  16#define __MFD_WM8994_CORE_H__
  17
  18#include <linux/mutex.h>
  19#include <linux/interrupt.h>
  20#include <linux/regmap.h>
  21
  22#include <linux/mfd/wm8994/pdata.h>
  23
  24enum wm8994_type {
  25        WM8994 = 0,
  26        WM8958 = 1,
  27        WM1811 = 2,
  28};
  29
  30struct regulator_dev;
  31struct regulator_bulk_data;
  32struct irq_domain;
  33
  34#define WM8994_NUM_GPIO_REGS 11
  35#define WM8994_NUM_LDO_REGS   2
  36#define WM8994_NUM_IRQ_REGS   2
  37
  38#define WM8994_IRQ_TEMP_SHUT            0
  39#define WM8994_IRQ_MIC1_DET             1
  40#define WM8994_IRQ_MIC1_SHRT            2
  41#define WM8994_IRQ_MIC2_DET             3
  42#define WM8994_IRQ_MIC2_SHRT            4
  43#define WM8994_IRQ_FLL1_LOCK            5
  44#define WM8994_IRQ_FLL2_LOCK            6
  45#define WM8994_IRQ_SRC1_LOCK            7
  46#define WM8994_IRQ_SRC2_LOCK            8
  47#define WM8994_IRQ_AIF1DRC1_SIG_DET     9
  48#define WM8994_IRQ_AIF1DRC2_SIG_DET     10
  49#define WM8994_IRQ_AIF2DRC_SIG_DET      11
  50#define WM8994_IRQ_FIFOS_ERR            12
  51#define WM8994_IRQ_WSEQ_DONE            13
  52#define WM8994_IRQ_DCS_DONE             14
  53#define WM8994_IRQ_TEMP_WARN            15
  54
  55/* GPIOs in the chip are numbered from 1-11 */
  56#define WM8994_IRQ_GPIO(x) (x + WM8994_IRQ_TEMP_WARN)
  57
  58struct wm8994 {
  59        struct wm8994_pdata pdata;
  60
  61        enum wm8994_type type;
  62        int revision;
  63        int cust_id;
  64
  65        struct device *dev;
  66        struct regmap *regmap;
  67
  68        bool ldo_ena_always_driven;
  69
  70        int gpio_base;
  71        int irq_base;
  72
  73        int irq;
  74        struct regmap_irq_chip_data *irq_data;
  75        struct irq_domain *edge_irq;
  76
  77        /* Used over suspend/resume */
  78        bool suspended;
  79
  80        struct regulator_dev *dbvdd;
  81        int num_supplies;
  82        struct regulator_bulk_data *supplies;
  83};
  84
  85/* Device I/O API */
  86
  87static inline int wm8994_reg_read(struct wm8994 *wm8994, unsigned short reg)
  88{
  89        unsigned int val;
  90        int ret;
  91
  92        ret = regmap_read(wm8994->regmap, reg, &val);
  93
  94        if (ret < 0)
  95                return ret;
  96        else
  97                return val;
  98}
  99
 100static inline int wm8994_reg_write(struct wm8994 *wm8994, unsigned short reg,
 101                                   unsigned short val)
 102{
 103        return regmap_write(wm8994->regmap, reg, val);
 104}
 105
 106static inline int wm8994_bulk_read(struct wm8994 *wm8994, unsigned short reg,
 107                                   int count, u16 *buf)
 108{
 109        return regmap_bulk_read(wm8994->regmap, reg, buf, count);
 110}
 111
 112static inline int wm8994_bulk_write(struct wm8994 *wm8994, unsigned short reg,
 113                                    int count, const u16 *buf)
 114{
 115        return regmap_raw_write(wm8994->regmap, reg, buf, count * sizeof(u16));
 116}
 117
 118static inline int wm8994_set_bits(struct wm8994 *wm8994, unsigned short reg,
 119                    unsigned short mask, unsigned short val)
 120{
 121        return regmap_update_bits(wm8994->regmap, reg, mask, val);
 122}
 123
 124/* Helper to save on boilerplate */
 125static inline int wm8994_request_irq(struct wm8994 *wm8994, int irq,
 126                                     irq_handler_t handler, const char *name,
 127                                     void *data)
 128{
 129        if (!wm8994->irq_data)
 130                return -EINVAL;
 131        return request_threaded_irq(regmap_irq_get_virq(wm8994->irq_data, irq),
 132                                    NULL, handler, IRQF_TRIGGER_RISING, name,
 133                                    data);
 134}
 135static inline void wm8994_free_irq(struct wm8994 *wm8994, int irq, void *data)
 136{
 137        if (!wm8994->irq_data)
 138                return;
 139        free_irq(regmap_irq_get_virq(wm8994->irq_data, irq), data);
 140}
 141
 142int wm8994_irq_init(struct wm8994 *wm8994);
 143void wm8994_irq_exit(struct wm8994 *wm8994);
 144
 145#endif
 146