Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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linux
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
21enum wm8994_type {
22 WM8994 = 0,
23 WM8958 = 1,
24 WM1811 = 2,
25};
26
27struct regulator_dev;
28struct regulator_bulk_data;
29struct regmap;
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
55struct wm8994 {
56 struct mutex irq_lock;
57
58 enum wm8994_type type;
59 int revision;
60
61 struct device *dev;
62 struct regmap *regmap;
63
64 bool ldo_ena_always_driven;
65
66 int gpio_base;
67 int irq_base;
68
69 int irq;
70 struct regmap_irq_chip_data *irq_data;
71
72 /* Used over suspend/resume */
73 bool suspended;
74
75 struct regulator_dev *dbvdd;
76 int num_supplies;
77 struct regulator_bulk_data *supplies;
78};
79
80/* Device I/O API */
81int wm8994_reg_read(struct wm8994 *wm8994, unsigned short reg);
82int wm8994_reg_write(struct wm8994 *wm8994, unsigned short reg,
83 unsigned short val);
84int wm8994_set_bits(struct wm8994 *wm8994, unsigned short reg,
85 unsigned short mask, unsigned short val);
86int wm8994_bulk_read(struct wm8994 *wm8994, unsigned short reg,
87 int count, u16 *buf);
88int wm8994_bulk_write(struct wm8994 *wm8994, unsigned short reg,
89 int count, const u16 *buf);
90
91
92/* Helper to save on boilerplate */
93static inline int wm8994_request_irq(struct wm8994 *wm8994, int irq,
94 irq_handler_t handler, const char *name,
95 void *data)
96{
97 if (!wm8994->irq_base)
98 return -EINVAL;
99 return request_threaded_irq(wm8994->irq_base + irq, NULL, handler,
100 IRQF_TRIGGER_RISING, name,
101 data);
102}
103static inline void wm8994_free_irq(struct wm8994 *wm8994, int irq, void *data)
104{
105 if (!wm8994->irq_base)
106 return;
107 free_irq(wm8994->irq_base + irq, data);
108}
109
110int wm8994_irq_init(struct wm8994 *wm8994);
111void wm8994_irq_exit(struct wm8994 *wm8994);
112
113#endif