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 enum wm8994_type {
  23         WM8994 = 0,
  24         WM8958 = 1,
  25         WM1811 = 2,
  26 };
  27
  28 struct regulator_dev;
  29 struct regulator_bulk_data;
  30
  31 #define WM8994_NUM_GPIO_REGS 11
  32 #define WM8994_NUM_LDO_REGS   2
  33 #define WM8994_NUM_IRQ_REGS   2
  34
  35 #define WM8994_IRQ_TEMP_SHUT            0
  36 #define WM8994_IRQ_MIC1_DET             1
  37 #define WM8994_IRQ_MIC1_SHRT            2
  38 #define WM8994_IRQ_MIC2_DET             3
  39 #define WM8994_IRQ_MIC2_SHRT            4
  40 #define WM8994_IRQ_FLL1_LOCK            5
  41 #define WM8994_IRQ_FLL2_LOCK            6
  42 #define WM8994_IRQ_SRC1_LOCK            7
  43 #define WM8994_IRQ_SRC2_LOCK            8
  44 #define WM8994_IRQ_AIF1DRC1_SIG_DET     9
  45 #define WM8994_IRQ_AIF1DRC2_SIG_DET     10
  46 #define WM8994_IRQ_AIF2DRC_SIG_DET      11
  47 #define WM8994_IRQ_FIFOS_ERR            12
  48 #define WM8994_IRQ_WSEQ_DONE            13
  49 #define WM8994_IRQ_DCS_DONE             14
  50 #define WM8994_IRQ_TEMP_WARN            15
  51
  52 /* GPIOs in the chip are numbered from 1-11 */
  53 #define WM8994_IRQ_GPIO(x) (x + WM8994_IRQ_TEMP_WARN)
  54
  55 struct wm8994 {
  56         struct mutex irq_lock;
  57
  58         enum wm8994_type type;
  59         int revision;
  60         int cust_id;
  61
  62         struct device *dev;
  63         struct regmap *regmap;
  64
  65         bool ldo_ena_always_driven;
  66
  67         int gpio_base;
  68         int irq_base;
  69
  70         int irq;
  71         struct regmap_irq_chip_data *irq_data;
  72
  73         /* Used over suspend/resume */
  74         bool suspended;
  75
  76         struct regulator_dev *dbvdd;
  77         int num_supplies;
  78         struct regulator_bulk_data *supplies;
  79 };
  80
  81 /* Device I/O API */
  82 int wm8994_reg_read(struct wm8994 *wm8994, unsigned short reg);
  83 int wm8994_reg_write(struct wm8994 *wm8994, unsigned short reg,
  84                  unsigned short val);
  85 int wm8994_set_bits(struct wm8994 *wm8994, unsigned short reg,
  86                     unsigned short mask, unsigned short val);
  87 int wm8994_bulk_read(struct wm8994 *wm8994, unsigned short reg,
  88                      int count, u16 *buf);
  89 int wm8994_bulk_write(struct wm8994 *wm8994, unsigned short reg,
  90                      int count, const u16 *buf);
  91
  92
  93 /* Helper to save on boilerplate */
  94 static inline int wm8994_request_irq(struct wm8994 *wm8994, int irq,
  95                                      irq_handler_t handler, const char *name,
  96                                      void *data)
  97 {
  98         if (!wm8994->irq_data)
  99                 return -EINVAL;
 100         return request_threaded_irq(regmap_irq_get_virq(wm8994->irq_data, irq),
 101                                     NULL, handler, IRQF_TRIGGER_RISING, name,
 102                                     data);
 103 }
 104 static inline void wm8994_free_irq(struct wm8994 *wm8994, int irq, void *data)
 105 {
 106         if (!wm8994->irq_data)
 107                 return;
 108         free_irq(regmap_irq_get_virq(wm8994->irq_data, irq), data);
 109 }
 110
 111 int wm8994_irq_init(struct wm8994 *wm8994);
 112 void wm8994_irq_exit(struct wm8994 *wm8994);
 113
 114 #endif