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-rw-r--r--drivers/mfd/da9063-irq.c193
1 files changed, 193 insertions, 0 deletions
diff --git a/drivers/mfd/da9063-irq.c b/drivers/mfd/da9063-irq.c
new file mode 100644
index 000000000000..822922602ce9
--- /dev/null
+++ b/drivers/mfd/da9063-irq.c
@@ -0,0 +1,193 @@
1/* da9063-irq.c: Interrupts support for Dialog DA9063
2 *
3 * Copyright 2012 Dialog Semiconductor Ltd.
4 * Copyright 2013 Philipp Zabel, Pengutronix
5 *
6 * Author: Michal Hajduk <michal.hajduk@diasemi.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#include <linux/kernel.h>
16#include <linux/module.h>
17#include <linux/irq.h>
18#include <linux/mfd/core.h>
19#include <linux/interrupt.h>
20#include <linux/regmap.h>
21#include <linux/mfd/da9063/core.h>
22#include <linux/mfd/da9063/pdata.h>
23
24#define DA9063_REG_EVENT_A_OFFSET 0
25#define DA9063_REG_EVENT_B_OFFSET 1
26#define DA9063_REG_EVENT_C_OFFSET 2
27#define DA9063_REG_EVENT_D_OFFSET 3
28#define EVENTS_BUF_LEN 4
29
30static const u8 mask_events_buf[] = { [0 ... (EVENTS_BUF_LEN - 1)] = ~0 };
31
32struct da9063_irq_data {
33 u16 reg;
34 u8 mask;
35};
36
37static struct regmap_irq da9063_irqs[] = {
38 /* DA9063 event A register */
39 [DA9063_IRQ_ONKEY] = {
40 .reg_offset = DA9063_REG_EVENT_A_OFFSET,
41 .mask = DA9063_M_ONKEY,
42 },
43 [DA9063_IRQ_ALARM] = {
44 .reg_offset = DA9063_REG_EVENT_A_OFFSET,
45 .mask = DA9063_M_ALARM,
46 },
47 [DA9063_IRQ_TICK] = {
48 .reg_offset = DA9063_REG_EVENT_A_OFFSET,
49 .mask = DA9063_M_TICK,
50 },
51 [DA9063_IRQ_ADC_RDY] = {
52 .reg_offset = DA9063_REG_EVENT_A_OFFSET,
53 .mask = DA9063_M_ADC_RDY,
54 },
55 [DA9063_IRQ_SEQ_RDY] = {
56 .reg_offset = DA9063_REG_EVENT_A_OFFSET,
57 .mask = DA9063_M_SEQ_RDY,
58 },
59 /* DA9063 event B register */
60 [DA9063_IRQ_WAKE] = {
61 .reg_offset = DA9063_REG_EVENT_B_OFFSET,
62 .mask = DA9063_M_WAKE,
63 },
64 [DA9063_IRQ_TEMP] = {
65 .reg_offset = DA9063_REG_EVENT_B_OFFSET,
66 .mask = DA9063_M_TEMP,
67 },
68 [DA9063_IRQ_COMP_1V2] = {
69 .reg_offset = DA9063_REG_EVENT_B_OFFSET,
70 .mask = DA9063_M_COMP_1V2,
71 },
72 [DA9063_IRQ_LDO_LIM] = {
73 .reg_offset = DA9063_REG_EVENT_B_OFFSET,
74 .mask = DA9063_M_LDO_LIM,
75 },
76 [DA9063_IRQ_REG_UVOV] = {
77 .reg_offset = DA9063_REG_EVENT_B_OFFSET,
78 .mask = DA9063_M_UVOV,
79 },
80 [DA9063_IRQ_VDD_MON] = {
81 .reg_offset = DA9063_REG_EVENT_B_OFFSET,
82 .mask = DA9063_M_VDD_MON,
83 },
84 [DA9063_IRQ_WARN] = {
85 .reg_offset = DA9063_REG_EVENT_B_OFFSET,
86 .mask = DA9063_M_VDD_WARN,
87 },
88 /* DA9063 event C register */
89 [DA9063_IRQ_GPI0] = {
90 .reg_offset = DA9063_REG_EVENT_C_OFFSET,
91 .mask = DA9063_M_GPI0,
92 },
93 [DA9063_IRQ_GPI1] = {
94 .reg_offset = DA9063_REG_EVENT_C_OFFSET,
95 .mask = DA9063_M_GPI1,
96 },
97 [DA9063_IRQ_GPI2] = {
98 .reg_offset = DA9063_REG_EVENT_C_OFFSET,
99 .mask = DA9063_M_GPI2,
100 },
101 [DA9063_IRQ_GPI3] = {
102 .reg_offset = DA9063_REG_EVENT_C_OFFSET,
103 .mask = DA9063_M_GPI3,
104 },
105 [DA9063_IRQ_GPI4] = {
106 .reg_offset = DA9063_REG_EVENT_C_OFFSET,
107 .mask = DA9063_M_GPI4,
108 },
109 [DA9063_IRQ_GPI5] = {
110 .reg_offset = DA9063_REG_EVENT_C_OFFSET,
111 .mask = DA9063_M_GPI5,
112 },
113 [DA9063_IRQ_GPI6] = {
114 .reg_offset = DA9063_REG_EVENT_C_OFFSET,
115 .mask = DA9063_M_GPI6,
116 },
117 [DA9063_IRQ_GPI7] = {
118 .reg_offset = DA9063_REG_EVENT_C_OFFSET,
119 .mask = DA9063_M_GPI7,
120 },
121 /* DA9063 event D register */
122 [DA9063_IRQ_GPI8] = {
123 .reg_offset = DA9063_REG_EVENT_D_OFFSET,
124 .mask = DA9063_M_GPI8,
125 },
126 [DA9063_IRQ_GPI9] = {
127 .reg_offset = DA9063_REG_EVENT_D_OFFSET,
128 .mask = DA9063_M_GPI9,
129 },
130 [DA9063_IRQ_GPI10] = {
131 .reg_offset = DA9063_REG_EVENT_D_OFFSET,
132 .mask = DA9063_M_GPI10,
133 },
134 [DA9063_IRQ_GPI11] = {
135 .reg_offset = DA9063_REG_EVENT_D_OFFSET,
136 .mask = DA9063_M_GPI11,
137 },
138 [DA9063_IRQ_GPI12] = {
139 .reg_offset = DA9063_REG_EVENT_D_OFFSET,
140 .mask = DA9063_M_GPI12,
141 },
142 [DA9063_IRQ_GPI13] = {
143 .reg_offset = DA9063_REG_EVENT_D_OFFSET,
144 .mask = DA9063_M_GPI13,
145 },
146 [DA9063_IRQ_GPI14] = {
147 .reg_offset = DA9063_REG_EVENT_D_OFFSET,
148 .mask = DA9063_M_GPI14,
149 },
150 [DA9063_IRQ_GPI15] = {
151 .reg_offset = DA9063_REG_EVENT_D_OFFSET,
152 .mask = DA9063_M_GPI15,
153 },
154};
155
156static struct regmap_irq_chip da9063_irq_chip = {
157 .name = "da9063-irq",
158 .irqs = da9063_irqs,
159 .num_irqs = DA9063_NUM_IRQ,
160
161 .num_regs = 4,
162 .status_base = DA9063_REG_EVENT_A,
163 .mask_base = DA9063_REG_IRQ_MASK_A,
164 .ack_base = DA9063_REG_EVENT_A,
165 .init_ack_masked = true,
166};
167
168int da9063_irq_init(struct da9063 *da9063)
169{
170 int ret;
171
172 if (!da9063->chip_irq) {
173 dev_err(da9063->dev, "No IRQ configured\n");
174 return -EINVAL;
175 }
176
177 ret = regmap_add_irq_chip(da9063->regmap, da9063->chip_irq,
178 IRQF_TRIGGER_LOW | IRQF_ONESHOT | IRQF_SHARED,
179 da9063->irq_base, &da9063_irq_chip,
180 &da9063->regmap_irq);
181 if (ret) {
182 dev_err(da9063->dev, "Failed to reguest IRQ %d: %d\n",
183 da9063->chip_irq, ret);
184 return ret;
185 }
186
187 return 0;
188}
189
190void da9063_irq_exit(struct da9063 *da9063)
191{
192 regmap_del_irq_chip(da9063->chip_irq, da9063->regmap_irq);
193}
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