Merge branch 'rmobile-latest' of git://git.kernel.org/pub/scm/linux/kernel/git/lethal...
[pandora-kernel.git] / 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/interrupt.h>
19
20 enum wm8994_type {
21         WM8994 = 0,
22         WM8958 = 1,
23 };
24
25 struct regulator_dev;
26 struct regulator_bulk_data;
27
28 #define WM8994_NUM_GPIO_REGS 11
29 #define WM8994_NUM_LDO_REGS   2
30 #define WM8994_NUM_IRQ_REGS   2
31
32 #define WM8994_IRQ_TEMP_SHUT            0
33 #define WM8994_IRQ_MIC1_DET             1
34 #define WM8994_IRQ_MIC1_SHRT            2
35 #define WM8994_IRQ_MIC2_DET             3
36 #define WM8994_IRQ_MIC2_SHRT            4
37 #define WM8994_IRQ_FLL1_LOCK            5
38 #define WM8994_IRQ_FLL2_LOCK            6
39 #define WM8994_IRQ_SRC1_LOCK            7
40 #define WM8994_IRQ_SRC2_LOCK            8
41 #define WM8994_IRQ_AIF1DRC1_SIG_DET     9
42 #define WM8994_IRQ_AIF1DRC2_SIG_DET     10
43 #define WM8994_IRQ_AIF2DRC_SIG_DET      11
44 #define WM8994_IRQ_FIFOS_ERR            12
45 #define WM8994_IRQ_WSEQ_DONE            13
46 #define WM8994_IRQ_DCS_DONE             14
47 #define WM8994_IRQ_TEMP_WARN            15
48
49 /* GPIOs in the chip are numbered from 1-11 */
50 #define WM8994_IRQ_GPIO(x) (x + WM8994_IRQ_TEMP_WARN)
51
52 struct wm8994 {
53         struct mutex io_lock;
54         struct mutex irq_lock;
55
56         enum wm8994_type type;
57
58         struct device *dev;
59         int (*read_dev)(struct wm8994 *wm8994, unsigned short reg,
60                         int bytes, void *dest);
61         int (*write_dev)(struct wm8994 *wm8994, unsigned short reg,
62                          int bytes, const void *src);
63
64         void *control_data;
65
66         int gpio_base;
67         int irq_base;
68
69         int irq;
70         u16 irq_masks_cur[WM8994_NUM_IRQ_REGS];
71         u16 irq_masks_cache[WM8994_NUM_IRQ_REGS];
72
73         /* Used over suspend/resume */
74         bool suspended;
75         u16 ldo_regs[WM8994_NUM_LDO_REGS];
76         u16 gpio_regs[WM8994_NUM_GPIO_REGS];
77
78         struct regulator_dev *dbvdd;
79         int num_supplies;
80         struct regulator_bulk_data *supplies;
81 };
82
83 /* Device I/O API */
84 int wm8994_reg_read(struct wm8994 *wm8994, unsigned short reg);
85 int wm8994_reg_write(struct wm8994 *wm8994, unsigned short reg,
86                  unsigned short val);
87 int wm8994_set_bits(struct wm8994 *wm8994, unsigned short reg,
88                     unsigned short mask, unsigned short val);
89 int wm8994_bulk_read(struct wm8994 *wm8994, unsigned short reg,
90                      int count, u16 *buf);
91 int wm8994_bulk_write(struct wm8994 *wm8994, unsigned short reg,
92                      int count, const u16 *buf);
93
94
95 /* Helper to save on boilerplate */
96 static inline int wm8994_request_irq(struct wm8994 *wm8994, int irq,
97                                      irq_handler_t handler, const char *name,
98                                      void *data)
99 {
100         if (!wm8994->irq_base)
101                 return -EINVAL;
102         return request_threaded_irq(wm8994->irq_base + irq, NULL, handler,
103                                     IRQF_TRIGGER_RISING, name,
104                                     data);
105 }
106 static inline void wm8994_free_irq(struct wm8994 *wm8994, int irq, void *data)
107 {
108         if (!wm8994->irq_base)
109                 return;
110         free_irq(wm8994->irq_base + irq, data);
111 }
112
113 int wm8994_irq_init(struct wm8994 *wm8994);
114 void wm8994_irq_exit(struct wm8994 *wm8994);
115
116 #endif