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
  24 enum wm8994_type {
  25         WM8994 = 0,
  26         WM8958 = 1,
  27         WM1811 = 2,
  28 };
  29
  30 struct regulator_dev;
  31 struct regulator_bulk_data;
  32 struct 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
  58 struct 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
  87 static 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
 100 static 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
 106 static 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
 112 static 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
 118 static 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 */
 125 static 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 }
 135 static 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
 142 int wm8994_irq_init(struct wm8994 *wm8994);
 143 void wm8994_irq_exit(struct wm8994 *wm8994);
 144
 145 #endif