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Krystian Garbaciak8e685482013-07-29 19:00:43 +02001/*
2 * da9063-core.c: Device access for Dialog DA9063 modules
3 *
4 * Copyright 2012 Dialog Semiconductors Ltd.
5 * Copyright 2013 Philipp Zabel, Pengutronix
6 *
7 * Author: Krystian Garbaciak <krystian.garbaciak@diasemi.com>,
8 * Michal Hajduk <michal.hajduk@diasemi.com>
9 *
10 * This program is free software; you can redistribute it and/or modify it
11 * under the terms of the GNU General Public License as published by the
12 * Free Software Foundation; either version 2 of the License, or (at your
13 * option) any later version.
14 *
15 */
16
17#include <linux/kernel.h>
18#include <linux/module.h>
19#include <linux/init.h>
20#include <linux/slab.h>
21#include <linux/device.h>
22#include <linux/delay.h>
23#include <linux/interrupt.h>
24#include <linux/mutex.h>
25#include <linux/mfd/core.h>
26#include <linux/regmap.h>
27
28#include <linux/mfd/da9063/core.h>
29#include <linux/mfd/da9063/pdata.h>
30#include <linux/mfd/da9063/registers.h>
31
32#include <linux/proc_fs.h>
33#include <linux/kthread.h>
34#include <linux/uaccess.h>
35
36
Krystian Garbaciaka0e08b82013-07-29 19:00:44 +020037static struct resource da9063_regulators_resources[] = {
38 {
39 .name = "LDO_LIM",
40 .start = DA9063_IRQ_LDO_LIM,
41 .end = DA9063_IRQ_LDO_LIM,
42 .flags = IORESOURCE_IRQ,
43 },
44};
45
46static struct resource da9063_rtc_resources[] = {
47 {
48 .name = "ALARM",
49 .start = DA9063_IRQ_ALARM,
50 .end = DA9063_IRQ_ALARM,
51 .flags = IORESOURCE_IRQ,
52 },
53 {
54 .name = "TICK",
55 .start = DA9063_IRQ_TICK,
56 .end = DA9063_IRQ_TICK,
57 .flags = IORESOURCE_IRQ,
58 }
59};
60
61static struct resource da9063_onkey_resources[] = {
62 {
63 .start = DA9063_IRQ_ONKEY,
64 .end = DA9063_IRQ_ONKEY,
65 .flags = IORESOURCE_IRQ,
66 },
67};
68
69static struct resource da9063_hwmon_resources[] = {
70 {
71 .start = DA9063_IRQ_ADC_RDY,
72 .end = DA9063_IRQ_ADC_RDY,
73 .flags = IORESOURCE_IRQ,
74 },
75};
76
77
Krystian Garbaciak8e685482013-07-29 19:00:43 +020078static struct mfd_cell da9063_devs[] = {
79 {
80 .name = DA9063_DRVNAME_REGULATORS,
Krystian Garbaciaka0e08b82013-07-29 19:00:44 +020081 .num_resources = ARRAY_SIZE(da9063_regulators_resources),
82 .resources = da9063_regulators_resources,
Krystian Garbaciak8e685482013-07-29 19:00:43 +020083 },
84 {
85 .name = DA9063_DRVNAME_LEDS,
86 },
87 {
88 .name = DA9063_DRVNAME_WATCHDOG,
89 },
90 {
91 .name = DA9063_DRVNAME_HWMON,
Krystian Garbaciaka0e08b82013-07-29 19:00:44 +020092 .num_resources = ARRAY_SIZE(da9063_hwmon_resources),
93 .resources = da9063_hwmon_resources,
Krystian Garbaciak8e685482013-07-29 19:00:43 +020094 },
95 {
96 .name = DA9063_DRVNAME_ONKEY,
Krystian Garbaciaka0e08b82013-07-29 19:00:44 +020097 .num_resources = ARRAY_SIZE(da9063_onkey_resources),
98 .resources = da9063_onkey_resources,
Krystian Garbaciak8e685482013-07-29 19:00:43 +020099 },
100 {
101 .name = DA9063_DRVNAME_RTC,
Krystian Garbaciaka0e08b82013-07-29 19:00:44 +0200102 .num_resources = ARRAY_SIZE(da9063_rtc_resources),
103 .resources = da9063_rtc_resources,
Krystian Garbaciak8e685482013-07-29 19:00:43 +0200104 },
105 {
106 .name = DA9063_DRVNAME_VIBRATION,
107 },
108};
109
110int da9063_device_init(struct da9063 *da9063, unsigned int irq)
111{
112 struct da9063_pdata *pdata = da9063->dev->platform_data;
113 int model, revision;
114 int ret;
115
116 if (pdata) {
117 da9063->flags = pdata->flags;
118 da9063->irq_base = pdata->irq_base;
119 } else {
120 da9063->flags = 0;
121 da9063->irq_base = 0;
122 }
123 da9063->chip_irq = irq;
124
125 if (pdata && pdata->init != NULL) {
126 ret = pdata->init(da9063);
127 if (ret != 0) {
128 dev_err(da9063->dev,
129 "Platform initialization failed.\n");
130 return ret;
131 }
132 }
133
134 ret = regmap_read(da9063->regmap, DA9063_REG_CHIP_ID, &model);
135 if (ret < 0) {
136 dev_err(da9063->dev, "Cannot read chip model id.\n");
137 return -EIO;
138 }
139 if (model != PMIC_DA9063) {
140 dev_err(da9063->dev, "Invalid chip model id: 0x%02x\n", model);
141 return -ENODEV;
142 }
143
144 ret = regmap_read(da9063->regmap, DA9063_REG_CHIP_VARIANT, &revision);
145 if (ret < 0) {
146 dev_err(da9063->dev, "Cannot read chip revision id.\n");
147 return -EIO;
148 }
149 revision >>= DA9063_CHIP_VARIANT_SHIFT;
150 if (revision != 3) {
151 dev_err(da9063->dev, "Unknown chip revision: %d\n", revision);
152 return -ENODEV;
153 }
154
155 da9063->model = model;
156 da9063->revision = revision;
157
158 dev_info(da9063->dev,
159 "Device detected (model-ID: 0x%02X rev-ID: 0x%02X)\n",
160 model, revision);
161
Krystian Garbaciaka0e08b82013-07-29 19:00:44 +0200162 ret = da9063_irq_init(da9063);
163 if (ret) {
164 dev_err(da9063->dev, "Cannot initialize interrupts.\n");
165 return ret;
166 }
167
Krystian Garbaciak8e685482013-07-29 19:00:43 +0200168 ret = mfd_add_devices(da9063->dev, -1, da9063_devs,
169 ARRAY_SIZE(da9063_devs), NULL, da9063->irq_base,
170 NULL);
171 if (ret)
172 dev_err(da9063->dev, "Cannot add MFD cells\n");
173
174 return ret;
175}
176
177void da9063_device_exit(struct da9063 *da9063)
178{
179 mfd_remove_devices(da9063->dev);
Krystian Garbaciaka0e08b82013-07-29 19:00:44 +0200180 da9063_irq_exit(da9063);
Krystian Garbaciak8e685482013-07-29 19:00:43 +0200181}
182
183MODULE_DESCRIPTION("PMIC driver for Dialog DA9063");
184MODULE_AUTHOR("Krystian Garbaciak <krystian.garbaciak@diasemi.com>, Michal Hajduk <michal.hajduk@diasemi.com>");
185MODULE_LICENSE("GPL");