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9efbc6f1 | 1 | // SPDX-License-Identifier: GPL-2.0+ |
8e685483 | 2 | /* |
9efbc6f1 | 3 | * Device access for Dialog DA9063 modules |
8e685483 KG |
4 | * |
5 | * Copyright 2012 Dialog Semiconductors Ltd. | |
6 | * Copyright 2013 Philipp Zabel, Pengutronix | |
7 | * | |
37778d83 ST |
8 | * Author: Krystian Garbaciak, Dialog Semiconductor |
9 | * Author: Michal Hajduk, Dialog Semiconductor | |
8e685483 | 10 | * |
8e685483 KG |
11 | */ |
12 | ||
13 | #include <linux/kernel.h> | |
14 | #include <linux/module.h> | |
15 | #include <linux/init.h> | |
16 | #include <linux/slab.h> | |
17 | #include <linux/device.h> | |
18 | #include <linux/delay.h> | |
19 | #include <linux/interrupt.h> | |
20 | #include <linux/mutex.h> | |
21 | #include <linux/mfd/core.h> | |
22 | #include <linux/regmap.h> | |
23 | ||
24 | #include <linux/mfd/da9063/core.h> | |
8e685483 KG |
25 | #include <linux/mfd/da9063/registers.h> |
26 | ||
27 | #include <linux/proc_fs.h> | |
28 | #include <linux/kthread.h> | |
29 | #include <linux/uaccess.h> | |
30 | ||
31 | ||
a0e08b86 KG |
32 | static struct resource da9063_regulators_resources[] = { |
33 | { | |
34 | .name = "LDO_LIM", | |
35 | .start = DA9063_IRQ_LDO_LIM, | |
36 | .end = DA9063_IRQ_LDO_LIM, | |
37 | .flags = IORESOURCE_IRQ, | |
38 | }, | |
39 | }; | |
40 | ||
41 | static struct resource da9063_rtc_resources[] = { | |
42 | { | |
43 | .name = "ALARM", | |
44 | .start = DA9063_IRQ_ALARM, | |
45 | .end = DA9063_IRQ_ALARM, | |
46 | .flags = IORESOURCE_IRQ, | |
47 | }, | |
48 | { | |
49 | .name = "TICK", | |
50 | .start = DA9063_IRQ_TICK, | |
51 | .end = DA9063_IRQ_TICK, | |
52 | .flags = IORESOURCE_IRQ, | |
53 | } | |
54 | }; | |
55 | ||
56 | static struct resource da9063_onkey_resources[] = { | |
57 | { | |
9011e4a8 | 58 | .name = "ONKEY", |
a0e08b86 KG |
59 | .start = DA9063_IRQ_ONKEY, |
60 | .end = DA9063_IRQ_ONKEY, | |
61 | .flags = IORESOURCE_IRQ, | |
62 | }, | |
63 | }; | |
64 | ||
65 | static struct resource da9063_hwmon_resources[] = { | |
66 | { | |
67 | .start = DA9063_IRQ_ADC_RDY, | |
68 | .end = DA9063_IRQ_ADC_RDY, | |
69 | .flags = IORESOURCE_IRQ, | |
70 | }, | |
71 | }; | |
72 | ||
73 | ||
c2ffec5e | 74 | static const struct mfd_cell da9063_common_devs[] = { |
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75 | { |
76 | .name = DA9063_DRVNAME_REGULATORS, | |
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77 | .num_resources = ARRAY_SIZE(da9063_regulators_resources), |
78 | .resources = da9063_regulators_resources, | |
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79 | }, |
80 | { | |
81 | .name = DA9063_DRVNAME_LEDS, | |
82 | }, | |
83 | { | |
84 | .name = DA9063_DRVNAME_WATCHDOG, | |
71e03de4 | 85 | .of_compatible = "dlg,da9063-watchdog", |
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86 | }, |
87 | { | |
88 | .name = DA9063_DRVNAME_HWMON, | |
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89 | .num_resources = ARRAY_SIZE(da9063_hwmon_resources), |
90 | .resources = da9063_hwmon_resources, | |
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91 | }, |
92 | { | |
93 | .name = DA9063_DRVNAME_ONKEY, | |
a0e08b86 KG |
94 | .num_resources = ARRAY_SIZE(da9063_onkey_resources), |
95 | .resources = da9063_onkey_resources, | |
9011e4a8 | 96 | .of_compatible = "dlg,da9063-onkey", |
8e685483 | 97 | }, |
c2ffec5e MV |
98 | { |
99 | .name = DA9063_DRVNAME_VIBRATION, | |
100 | }, | |
101 | }; | |
102 | ||
103 | /* Only present on DA9063 , not on DA9063L */ | |
104 | static const struct mfd_cell da9063_devs[] = { | |
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105 | { |
106 | .name = DA9063_DRVNAME_RTC, | |
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107 | .num_resources = ARRAY_SIZE(da9063_rtc_resources), |
108 | .resources = da9063_rtc_resources, | |
71e03de4 | 109 | .of_compatible = "dlg,da9063-rtc", |
8e685483 | 110 | }, |
8e685483 KG |
111 | }; |
112 | ||
9011e4a8 ST |
113 | static int da9063_clear_fault_log(struct da9063 *da9063) |
114 | { | |
115 | int ret = 0; | |
116 | int fault_log = 0; | |
117 | ||
118 | ret = regmap_read(da9063->regmap, DA9063_REG_FAULT_LOG, &fault_log); | |
119 | if (ret < 0) { | |
120 | dev_err(da9063->dev, "Cannot read FAULT_LOG.\n"); | |
121 | return -EIO; | |
122 | } | |
123 | ||
124 | if (fault_log) { | |
125 | if (fault_log & DA9063_TWD_ERROR) | |
126 | dev_dbg(da9063->dev, | |
127 | "Fault log entry detected: DA9063_TWD_ERROR\n"); | |
128 | if (fault_log & DA9063_POR) | |
129 | dev_dbg(da9063->dev, | |
130 | "Fault log entry detected: DA9063_POR\n"); | |
131 | if (fault_log & DA9063_VDD_FAULT) | |
132 | dev_dbg(da9063->dev, | |
133 | "Fault log entry detected: DA9063_VDD_FAULT\n"); | |
134 | if (fault_log & DA9063_VDD_START) | |
135 | dev_dbg(da9063->dev, | |
136 | "Fault log entry detected: DA9063_VDD_START\n"); | |
137 | if (fault_log & DA9063_TEMP_CRIT) | |
138 | dev_dbg(da9063->dev, | |
139 | "Fault log entry detected: DA9063_TEMP_CRIT\n"); | |
140 | if (fault_log & DA9063_KEY_RESET) | |
141 | dev_dbg(da9063->dev, | |
142 | "Fault log entry detected: DA9063_KEY_RESET\n"); | |
143 | if (fault_log & DA9063_NSHUTDOWN) | |
144 | dev_dbg(da9063->dev, | |
145 | "Fault log entry detected: DA9063_NSHUTDOWN\n"); | |
146 | if (fault_log & DA9063_WAIT_SHUT) | |
147 | dev_dbg(da9063->dev, | |
148 | "Fault log entry detected: DA9063_WAIT_SHUT\n"); | |
149 | } | |
150 | ||
151 | ret = regmap_write(da9063->regmap, | |
152 | DA9063_REG_FAULT_LOG, | |
153 | fault_log); | |
154 | if (ret < 0) | |
155 | dev_err(da9063->dev, | |
156 | "Cannot reset FAULT_LOG values %d\n", ret); | |
157 | ||
158 | return ret; | |
159 | } | |
160 | ||
8e685483 KG |
161 | int da9063_device_init(struct da9063 *da9063, unsigned int irq) |
162 | { | |
c1d12c78 | 163 | int model, variant_id, variant_code; |
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164 | int ret; |
165 | ||
9011e4a8 ST |
166 | ret = da9063_clear_fault_log(da9063); |
167 | if (ret < 0) | |
168 | dev_err(da9063->dev, "Cannot clear fault log\n"); | |
169 | ||
c6b9605f WS |
170 | da9063->flags = 0; |
171 | da9063->irq_base = -1; | |
8e685483 KG |
172 | da9063->chip_irq = irq; |
173 | ||
8e685483 KG |
174 | ret = regmap_read(da9063->regmap, DA9063_REG_CHIP_ID, &model); |
175 | if (ret < 0) { | |
176 | dev_err(da9063->dev, "Cannot read chip model id.\n"); | |
177 | return -EIO; | |
178 | } | |
df7878f9 | 179 | if (model != PMIC_CHIP_ID_DA9063) { |
8e685483 KG |
180 | dev_err(da9063->dev, "Invalid chip model id: 0x%02x\n", model); |
181 | return -ENODEV; | |
182 | } | |
183 | ||
c1d12c78 | 184 | ret = regmap_read(da9063->regmap, DA9063_REG_CHIP_VARIANT, &variant_id); |
8e685483 | 185 | if (ret < 0) { |
c1d12c78 | 186 | dev_err(da9063->dev, "Cannot read chip variant id.\n"); |
8e685483 KG |
187 | return -EIO; |
188 | } | |
c1d12c78 OST |
189 | |
190 | variant_code = variant_id >> DA9063_CHIP_VARIANT_SHIFT; | |
191 | ||
192 | dev_info(da9063->dev, | |
193 | "Device detected (chip-ID: 0x%02X, var-ID: 0x%02X)\n", | |
194 | model, variant_id); | |
195 | ||
9cb42e2a OST |
196 | if (variant_code < PMIC_DA9063_BB && variant_code != PMIC_DA9063_AD) { |
197 | dev_err(da9063->dev, | |
198 | "Cannot support variant code: 0x%02X\n", variant_code); | |
8e685483 KG |
199 | return -ENODEV; |
200 | } | |
201 | ||
c1d12c78 | 202 | da9063->variant_code = variant_code; |
8e685483 | 203 | |
a0e08b86 KG |
204 | ret = da9063_irq_init(da9063); |
205 | if (ret) { | |
206 | dev_err(da9063->dev, "Cannot initialize interrupts.\n"); | |
207 | return ret; | |
208 | } | |
209 | ||
439b8bdd DL |
210 | da9063->irq_base = regmap_irq_chip_get_base(da9063->regmap_irq); |
211 | ||
152bed76 | 212 | ret = devm_mfd_add_devices(da9063->dev, PLATFORM_DEVID_NONE, |
c2ffec5e MV |
213 | da9063_common_devs, |
214 | ARRAY_SIZE(da9063_common_devs), | |
152bed76 | 215 | NULL, da9063->irq_base, NULL); |
c2ffec5e MV |
216 | if (ret) { |
217 | dev_err(da9063->dev, "Failed to add child devices\n"); | |
218 | return ret; | |
219 | } | |
220 | ||
221 | if (da9063->type == PMIC_TYPE_DA9063) { | |
222 | ret = devm_mfd_add_devices(da9063->dev, PLATFORM_DEVID_NONE, | |
223 | da9063_devs, ARRAY_SIZE(da9063_devs), | |
224 | NULL, da9063->irq_base, NULL); | |
225 | if (ret) { | |
226 | dev_err(da9063->dev, "Failed to add child devices\n"); | |
227 | return ret; | |
228 | } | |
229 | } | |
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230 | |
231 | return ret; | |
232 | } | |
233 | ||
8e685483 | 234 | MODULE_DESCRIPTION("PMIC driver for Dialog DA9063"); |
37778d83 ST |
235 | MODULE_AUTHOR("Krystian Garbaciak"); |
236 | MODULE_AUTHOR("Michal Hajduk"); | |
8e685483 | 237 | MODULE_LICENSE("GPL"); |