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1 | /* |
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 | ||
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37 | static 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 | ||
46 | static 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 | ||
61 | static struct resource da9063_onkey_resources[] = { | |
62 | { | |
63 | .start = DA9063_IRQ_ONKEY, | |
64 | .end = DA9063_IRQ_ONKEY, | |
65 | .flags = IORESOURCE_IRQ, | |
66 | }, | |
67 | }; | |
68 | ||
69 | static 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 | ||
c8f675ff | 78 | static const struct mfd_cell da9063_devs[] = { |
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79 | { |
80 | .name = DA9063_DRVNAME_REGULATORS, | |
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81 | .num_resources = ARRAY_SIZE(da9063_regulators_resources), |
82 | .resources = da9063_regulators_resources, | |
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83 | }, |
84 | { | |
85 | .name = DA9063_DRVNAME_LEDS, | |
86 | }, | |
87 | { | |
88 | .name = DA9063_DRVNAME_WATCHDOG, | |
89 | }, | |
90 | { | |
91 | .name = DA9063_DRVNAME_HWMON, | |
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92 | .num_resources = ARRAY_SIZE(da9063_hwmon_resources), |
93 | .resources = da9063_hwmon_resources, | |
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94 | }, |
95 | { | |
96 | .name = DA9063_DRVNAME_ONKEY, | |
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97 | .num_resources = ARRAY_SIZE(da9063_onkey_resources), |
98 | .resources = da9063_onkey_resources, | |
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99 | }, |
100 | { | |
101 | .name = DA9063_DRVNAME_RTC, | |
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102 | .num_resources = ARRAY_SIZE(da9063_rtc_resources), |
103 | .resources = da9063_rtc_resources, | |
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104 | }, |
105 | { | |
106 | .name = DA9063_DRVNAME_VIBRATION, | |
107 | }, | |
108 | }; | |
109 | ||
110 | int da9063_device_init(struct da9063 *da9063, unsigned int irq) | |
111 | { | |
112 | struct da9063_pdata *pdata = da9063->dev->platform_data; | |
c1d12c78 | 113 | int model, variant_id, variant_code; |
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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 | ||
c1d12c78 | 144 | ret = regmap_read(da9063->regmap, DA9063_REG_CHIP_VARIANT, &variant_id); |
8e685483 | 145 | if (ret < 0) { |
c1d12c78 | 146 | dev_err(da9063->dev, "Cannot read chip variant id.\n"); |
8e685483 KG |
147 | return -EIO; |
148 | } | |
c1d12c78 OST |
149 | |
150 | variant_code = variant_id >> DA9063_CHIP_VARIANT_SHIFT; | |
151 | ||
152 | dev_info(da9063->dev, | |
153 | "Device detected (chip-ID: 0x%02X, var-ID: 0x%02X)\n", | |
154 | model, variant_id); | |
155 | ||
9cb42e2a OST |
156 | if (variant_code < PMIC_DA9063_BB && variant_code != PMIC_DA9063_AD) { |
157 | dev_err(da9063->dev, | |
158 | "Cannot support variant code: 0x%02X\n", variant_code); | |
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159 | return -ENODEV; |
160 | } | |
161 | ||
162 | da9063->model = model; | |
c1d12c78 | 163 | da9063->variant_code = variant_code; |
8e685483 | 164 | |
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165 | ret = da9063_irq_init(da9063); |
166 | if (ret) { | |
167 | dev_err(da9063->dev, "Cannot initialize interrupts.\n"); | |
168 | return ret; | |
169 | } | |
170 | ||
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171 | ret = mfd_add_devices(da9063->dev, -1, da9063_devs, |
172 | ARRAY_SIZE(da9063_devs), NULL, da9063->irq_base, | |
173 | NULL); | |
174 | if (ret) | |
175 | dev_err(da9063->dev, "Cannot add MFD cells\n"); | |
176 | ||
177 | return ret; | |
178 | } | |
179 | ||
180 | void da9063_device_exit(struct da9063 *da9063) | |
181 | { | |
182 | mfd_remove_devices(da9063->dev); | |
a0e08b86 | 183 | da9063_irq_exit(da9063); |
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184 | } |
185 | ||
186 | MODULE_DESCRIPTION("PMIC driver for Dialog DA9063"); | |
187 | MODULE_AUTHOR("Krystian Garbaciak <krystian.garbaciak@diasemi.com>, Michal Hajduk <michal.hajduk@diasemi.com>"); | |
188 | MODULE_LICENSE("GPL"); |