Add the rt linux 4.1.3-rt3 as base
[kvmfornfv.git] / kernel / 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