1 /* SPDX-License-Identifier: GPL-2.0-or-later */
2 /*
3 * include/linux/mfd/wm8994/core.h -- Core interface for WM8994
4 *
5 * Copyright 2009 Wolfson Microelectronics PLC.
6 *
7 * Author: Mark Brown <broonie@opensource.wolfsonmicro.com>
8 */
9
10 #ifndef __MFD_WM8994_CORE_H__
11 #define __MFD_WM8994_CORE_H__
12
13 #include <linux/mutex.h>
14 #include <linux/interrupt.h>
15 #include <linux/regmap.h>
16
17 #include <linux/mfd/wm8994/pdata.h>
18
19 enum wm8994_type {
20 WM8994 = 0,
21 WM8958 = 1,
22 WM1811 = 2,
23 };
24
25 struct regulator_dev;
26 struct regulator_bulk_data;
27 struct irq_domain;
28
29 #define WM8994_NUM_GPIO_REGS 11
30 #define WM8994_NUM_LDO_REGS 2
31 #define WM8994_NUM_IRQ_REGS 2
32
33 #define WM8994_IRQ_TEMP_SHUT 0
34 #define WM8994_IRQ_MIC1_DET 1
35 #define WM8994_IRQ_MIC1_SHRT 2
36 #define WM8994_IRQ_MIC2_DET 3
37 #define WM8994_IRQ_MIC2_SHRT 4
38 #define WM8994_IRQ_FLL1_LOCK 5
39 #define WM8994_IRQ_FLL2_LOCK 6
40 #define WM8994_IRQ_SRC1_LOCK 7
41 #define WM8994_IRQ_SRC2_LOCK 8
42 #define WM8994_IRQ_AIF1DRC1_SIG_DET 9
43 #define WM8994_IRQ_AIF1DRC2_SIG_DET 10
44 #define WM8994_IRQ_AIF2DRC_SIG_DET 11
45 #define WM8994_IRQ_FIFOS_ERR 12
46 #define WM8994_IRQ_WSEQ_DONE 13
47 #define WM8994_IRQ_DCS_DONE 14
48 #define WM8994_IRQ_TEMP_WARN 15
49
50 /* GPIOs in the chip are numbered from 1-11 */
51 #define WM8994_IRQ_GPIO(x) (x + WM8994_IRQ_TEMP_WARN)
52
53 struct wm8994 {
54 struct wm8994_pdata pdata;
55
56 enum wm8994_type type;
57 int revision;
58 int cust_id;
59
60 struct device *dev;
61 struct regmap *regmap;
62
63 bool ldo_ena_always_driven;
64
65 int gpio_base;
66 int irq_base;
67
68 int irq;
69 struct regmap_irq_chip_data *irq_data;
70 struct irq_domain *edge_irq;
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 */
81
82 static inline int wm8994_reg_read(struct wm8994 *wm8994, unsigned short reg)
83 {
84 unsigned int val;
85 int ret;
86
87 ret = regmap_read(wm8994->regmap, reg, &val);
88
89 if (ret < 0)
90 return ret;
91 else
92 return val;
93 }
94
95 static inline int wm8994_reg_write(struct wm8994 *wm8994, unsigned short reg,
96 unsigned short val)
97 {
98 return regmap_write(wm8994->regmap, reg, val);
99 }
100
101 static inline int wm8994_bulk_read(struct wm8994 *wm8994, unsigned short reg,
102 int count, u16 *buf)
103 {
104 return regmap_bulk_read(wm8994->regmap, reg, buf, count);
105 }
106
107 static inline int wm8994_bulk_write(struct wm8994 *wm8994, unsigned short reg,
108 int count, const u16 *buf)
109 {
110 return regmap_raw_write(wm8994->regmap, reg, buf, count * sizeof(u16));
111 }
112
113 static inline int wm8994_set_bits(struct wm8994 *wm8994, unsigned short reg,
114 unsigned short mask, unsigned short val)
115 {
116 return regmap_update_bits(wm8994->regmap, reg, mask, val);
117 }
118
119 /* Helper to save on boilerplate */
120 static inline int wm8994_request_irq(struct wm8994 *wm8994, int irq,
121 irq_handler_t handler, const char *name,
122 void *data)
123 {
124 if (!wm8994->irq_data)
125 return -EINVAL;
126 return request_threaded_irq(regmap_irq_get_virq(wm8994->irq_data, irq),
127 NULL, handler, IRQF_TRIGGER_RISING, name,
128 data);
129 }
130 static inline void wm8994_free_irq(struct wm8994 *wm8994, int irq, void *data)
131 {
132 if (!wm8994->irq_data)
133 return;
134 free_irq(regmap_irq_get_virq(wm8994->irq_data, irq), data);
135 }
136
137 int wm8994_irq_init(struct wm8994 *wm8994);
138 void wm8994_irq_exit(struct wm8994 *wm8994);
139
140 #endif
141
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