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
wm8994_reg_read(struct wm8994 * wm8994,unsigned short reg)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
wm8994_reg_write(struct wm8994 * wm8994,unsigned short reg,unsigned short val)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
wm8994_bulk_read(struct wm8994 * wm8994,unsigned short reg,int count,u16 * buf)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
wm8994_bulk_write(struct wm8994 * wm8994,unsigned short reg,int count,const u16 * buf)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
wm8994_set_bits(struct wm8994 * wm8994,unsigned short reg,unsigned short mask,unsigned short val)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 */
wm8994_request_irq(struct wm8994 * wm8994,int irq,irq_handler_t handler,const char * name,void * data)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 }
wm8994_free_irq(struct wm8994 * wm8994,int irq,void * data)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
146