summaryrefslogtreecommitdiff
path: root/drivers/mfd/wm8994-irq.c
blob: 0aac4aff17a5f6cf4d66144883608157a720d7ed (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
/*
 * wm8994-irq.c  --  Interrupt controller support for Wolfson WM8994
 *
 * Copyright 2010 Wolfson Microelectronics PLC.
 *
 * Author: Mark Brown <broonie@opensource.wolfsonmicro.com>
 *
 *  This program is free software; you can redistribute  it and/or modify it
 *  under  the terms of  the GNU General  Public License as published by the
 *  Free Software Foundation;  either version 2 of the  License, or (at your
 *  option) any later version.
 *
 */

#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/i2c.h>
#include <linux/irq.h>
#include <linux/mfd/core.h>
#include <linux/interrupt.h>
#include <linux/regmap.h>

#include <linux/mfd/wm8994/core.h>
#include <linux/mfd/wm8994/pdata.h>
#include <linux/mfd/wm8994/registers.h>

#include <linux/delay.h>

static struct regmap_irq wm8994_irqs[] = {
	[WM8994_IRQ_TEMP_SHUT] = {
		.reg_offset = 1,
		.mask = WM8994_TEMP_SHUT_EINT,
	},
	[WM8994_IRQ_MIC1_DET] = {
		.reg_offset = 1,
		.mask = WM8994_MIC1_DET_EINT,
	},
	[WM8994_IRQ_MIC1_SHRT] = {
		.reg_offset = 1,
		.mask = WM8994_MIC1_SHRT_EINT,
	},
	[WM8994_IRQ_MIC2_DET] = {
		.reg_offset = 1,
		.mask = WM8994_MIC2_DET_EINT,
	},
	[WM8994_IRQ_MIC2_SHRT] = {
		.reg_offset = 1,
		.mask = WM8994_MIC2_SHRT_EINT,
	},
	[WM8994_IRQ_FLL1_LOCK] = {
		.reg_offset = 1,
		.mask = WM8994_FLL1_LOCK_EINT,
	},
	[WM8994_IRQ_FLL2_LOCK] = {
		.reg_offset = 1,
		.mask = WM8994_FLL2_LOCK_EINT,
	},
	[WM8994_IRQ_SRC1_LOCK] = {
		.reg_offset = 1,
		.mask = WM8994_SRC1_LOCK_EINT,
	},
	[WM8994_IRQ_SRC2_LOCK] = {
		.reg_offset = 1,
		.mask = WM8994_SRC2_LOCK_EINT,
	},
	[WM8994_IRQ_AIF1DRC1_SIG_DET] = {
		.reg_offset = 1,
		.mask = WM8994_AIF1DRC1_SIG_DET,
	},
	[WM8994_IRQ_AIF1DRC2_SIG_DET] = {
		.reg_offset = 1,
		.mask = WM8994_AIF1DRC2_SIG_DET_EINT,
	},
	[WM8994_IRQ_AIF2DRC_SIG_DET] = {
		.reg_offset = 1,
		.mask = WM8994_AIF2DRC_SIG_DET_EINT,
	},
	[WM8994_IRQ_FIFOS_ERR] = {
		.reg_offset = 1,
		.mask = WM8994_FIFOS_ERR_EINT,
	},
	[WM8994_IRQ_WSEQ_DONE] = {
		.reg_offset = 1,
		.mask = WM8994_WSEQ_DONE_EINT,
	},
	[WM8994_IRQ_DCS_DONE] = {
		.reg_offset = 1,
		.mask = WM8994_DCS_DONE_EINT,
	},
	[WM8994_IRQ_TEMP_WARN] = {
		.reg_offset = 1,
		.mask = WM8994_TEMP_WARN_EINT,
	},
	[WM8994_IRQ_GPIO(1)] = {
		.mask = WM8994_GP1_EINT,
	},
	[WM8994_IRQ_GPIO(2)] = {
		.mask = WM8994_GP2_EINT,
	},
	[WM8994_IRQ_GPIO(3)] = {
		.mask = WM8994_GP3_EINT,
	},
	[WM8994_IRQ_GPIO(4)] = {
		.mask = WM8994_GP4_EINT,
	},
	[WM8994_IRQ_GPIO(5)] = {
		.mask = WM8994_GP5_EINT,
	},
	[WM8994_IRQ_GPIO(6)] = {
		.mask = WM8994_GP6_EINT,
	},
	[WM8994_IRQ_GPIO(7)] = {
		.mask = WM8994_GP7_EINT,
	},
	[WM8994_IRQ_GPIO(8)] = {
		.mask = WM8994_GP8_EINT,
	},
	[WM8994_IRQ_GPIO(9)] = {
		.mask = WM8994_GP8_EINT,
	},
	[WM8994_IRQ_GPIO(10)] = {
		.mask = WM8994_GP10_EINT,
	},
	[WM8994_IRQ_GPIO(11)] = {
		.mask = WM8994_GP11_EINT,
	},
};

static struct regmap_irq_chip wm8994_irq_chip = {
	.name = "wm8994",
	.irqs = wm8994_irqs,
	.num_irqs = ARRAY_SIZE(wm8994_irqs),

	.num_regs = 2,
	.status_base = WM8994_INTERRUPT_STATUS_1,
	.mask_base = WM8994_INTERRUPT_STATUS_1_MASK,
	.ack_base = WM8994_INTERRUPT_STATUS_1,
};

int wm8994_irq_init(struct wm8994 *wm8994)
{
	int ret;
	unsigned long irqflags;
	struct wm8994_pdata *pdata = wm8994->dev->platform_data;

	if (!wm8994->irq) {
		dev_warn(wm8994->dev,
			 "No interrupt specified, no interrupts\n");
		wm8994->irq_base = 0;
		return 0;
	}

	/* select user or default irq flags */
	irqflags = IRQF_TRIGGER_HIGH | IRQF_ONESHOT;
	if (pdata->irq_flags)
		irqflags = pdata->irq_flags;

	ret = regmap_add_irq_chip(wm8994->regmap, wm8994->irq,
				  irqflags,
				  wm8994->irq_base, &wm8994_irq_chip,
				  &wm8994->irq_data);
	if (ret != 0) {
		dev_err(wm8994->dev, "Failed to register IRQ chip: %d\n", ret);
		return ret;
	}

	/* Enable top level interrupt if it was masked */
	wm8994_reg_write(wm8994, WM8994_INTERRUPT_CONTROL, 0);

	return 0;
}

void wm8994_irq_exit(struct wm8994 *wm8994)
{
	regmap_del_irq_chip(wm8994->irq, wm8994->irq_data);
}