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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 | * | |
37778d83 ST |
7 | * Author: Krystian Garbaciak, Dialog Semiconductor |
8 | * Author: Michal Hajduk, Dialog Semiconductor | |
8e685483 KG |
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 | ||
a0e08b86 KG |
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 | { | |
9011e4a8 | 63 | .name = "ONKEY", |
a0e08b86 KG |
64 | .start = DA9063_IRQ_ONKEY, |
65 | .end = DA9063_IRQ_ONKEY, | |
66 | .flags = IORESOURCE_IRQ, | |
67 | }, | |
68 | }; | |
69 | ||
70 | static struct resource da9063_hwmon_resources[] = { | |
71 | { | |
72 | .start = DA9063_IRQ_ADC_RDY, | |
73 | .end = DA9063_IRQ_ADC_RDY, | |
74 | .flags = IORESOURCE_IRQ, | |
75 | }, | |
76 | }; | |
77 | ||
78 | ||
c2ffec5e | 79 | static const struct mfd_cell da9063_common_devs[] = { |
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80 | { |
81 | .name = DA9063_DRVNAME_REGULATORS, | |
a0e08b86 KG |
82 | .num_resources = ARRAY_SIZE(da9063_regulators_resources), |
83 | .resources = da9063_regulators_resources, | |
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84 | }, |
85 | { | |
86 | .name = DA9063_DRVNAME_LEDS, | |
87 | }, | |
88 | { | |
89 | .name = DA9063_DRVNAME_WATCHDOG, | |
71e03de4 | 90 | .of_compatible = "dlg,da9063-watchdog", |
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91 | }, |
92 | { | |
93 | .name = DA9063_DRVNAME_HWMON, | |
a0e08b86 KG |
94 | .num_resources = ARRAY_SIZE(da9063_hwmon_resources), |
95 | .resources = da9063_hwmon_resources, | |
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96 | }, |
97 | { | |
98 | .name = DA9063_DRVNAME_ONKEY, | |
a0e08b86 KG |
99 | .num_resources = ARRAY_SIZE(da9063_onkey_resources), |
100 | .resources = da9063_onkey_resources, | |
9011e4a8 | 101 | .of_compatible = "dlg,da9063-onkey", |
8e685483 | 102 | }, |
c2ffec5e MV |
103 | { |
104 | .name = DA9063_DRVNAME_VIBRATION, | |
105 | }, | |
106 | }; | |
107 | ||
108 | /* Only present on DA9063 , not on DA9063L */ | |
109 | static const struct mfd_cell da9063_devs[] = { | |
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110 | { |
111 | .name = DA9063_DRVNAME_RTC, | |
a0e08b86 KG |
112 | .num_resources = ARRAY_SIZE(da9063_rtc_resources), |
113 | .resources = da9063_rtc_resources, | |
71e03de4 | 114 | .of_compatible = "dlg,da9063-rtc", |
8e685483 | 115 | }, |
8e685483 KG |
116 | }; |
117 | ||
9011e4a8 ST |
118 | static int da9063_clear_fault_log(struct da9063 *da9063) |
119 | { | |
120 | int ret = 0; | |
121 | int fault_log = 0; | |
122 | ||
123 | ret = regmap_read(da9063->regmap, DA9063_REG_FAULT_LOG, &fault_log); | |
124 | if (ret < 0) { | |
125 | dev_err(da9063->dev, "Cannot read FAULT_LOG.\n"); | |
126 | return -EIO; | |
127 | } | |
128 | ||
129 | if (fault_log) { | |
130 | if (fault_log & DA9063_TWD_ERROR) | |
131 | dev_dbg(da9063->dev, | |
132 | "Fault log entry detected: DA9063_TWD_ERROR\n"); | |
133 | if (fault_log & DA9063_POR) | |
134 | dev_dbg(da9063->dev, | |
135 | "Fault log entry detected: DA9063_POR\n"); | |
136 | if (fault_log & DA9063_VDD_FAULT) | |
137 | dev_dbg(da9063->dev, | |
138 | "Fault log entry detected: DA9063_VDD_FAULT\n"); | |
139 | if (fault_log & DA9063_VDD_START) | |
140 | dev_dbg(da9063->dev, | |
141 | "Fault log entry detected: DA9063_VDD_START\n"); | |
142 | if (fault_log & DA9063_TEMP_CRIT) | |
143 | dev_dbg(da9063->dev, | |
144 | "Fault log entry detected: DA9063_TEMP_CRIT\n"); | |
145 | if (fault_log & DA9063_KEY_RESET) | |
146 | dev_dbg(da9063->dev, | |
147 | "Fault log entry detected: DA9063_KEY_RESET\n"); | |
148 | if (fault_log & DA9063_NSHUTDOWN) | |
149 | dev_dbg(da9063->dev, | |
150 | "Fault log entry detected: DA9063_NSHUTDOWN\n"); | |
151 | if (fault_log & DA9063_WAIT_SHUT) | |
152 | dev_dbg(da9063->dev, | |
153 | "Fault log entry detected: DA9063_WAIT_SHUT\n"); | |
154 | } | |
155 | ||
156 | ret = regmap_write(da9063->regmap, | |
157 | DA9063_REG_FAULT_LOG, | |
158 | fault_log); | |
159 | if (ret < 0) | |
160 | dev_err(da9063->dev, | |
161 | "Cannot reset FAULT_LOG values %d\n", ret); | |
162 | ||
163 | return ret; | |
164 | } | |
165 | ||
8e685483 KG |
166 | int da9063_device_init(struct da9063 *da9063, unsigned int irq) |
167 | { | |
168 | struct da9063_pdata *pdata = da9063->dev->platform_data; | |
c1d12c78 | 169 | int model, variant_id, variant_code; |
8e685483 KG |
170 | int ret; |
171 | ||
9011e4a8 ST |
172 | ret = da9063_clear_fault_log(da9063); |
173 | if (ret < 0) | |
174 | dev_err(da9063->dev, "Cannot clear fault log\n"); | |
175 | ||
8e685483 KG |
176 | if (pdata) { |
177 | da9063->flags = pdata->flags; | |
178 | da9063->irq_base = pdata->irq_base; | |
179 | } else { | |
180 | da9063->flags = 0; | |
439b8bdd | 181 | da9063->irq_base = -1; |
8e685483 KG |
182 | } |
183 | da9063->chip_irq = irq; | |
184 | ||
185 | if (pdata && pdata->init != NULL) { | |
186 | ret = pdata->init(da9063); | |
187 | if (ret != 0) { | |
188 | dev_err(da9063->dev, | |
189 | "Platform initialization failed.\n"); | |
190 | return ret; | |
191 | } | |
192 | } | |
193 | ||
194 | ret = regmap_read(da9063->regmap, DA9063_REG_CHIP_ID, &model); | |
195 | if (ret < 0) { | |
196 | dev_err(da9063->dev, "Cannot read chip model id.\n"); | |
197 | return -EIO; | |
198 | } | |
df7878f9 | 199 | if (model != PMIC_CHIP_ID_DA9063) { |
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200 | dev_err(da9063->dev, "Invalid chip model id: 0x%02x\n", model); |
201 | return -ENODEV; | |
202 | } | |
203 | ||
c1d12c78 | 204 | ret = regmap_read(da9063->regmap, DA9063_REG_CHIP_VARIANT, &variant_id); |
8e685483 | 205 | if (ret < 0) { |
c1d12c78 | 206 | dev_err(da9063->dev, "Cannot read chip variant id.\n"); |
8e685483 KG |
207 | return -EIO; |
208 | } | |
c1d12c78 OST |
209 | |
210 | variant_code = variant_id >> DA9063_CHIP_VARIANT_SHIFT; | |
211 | ||
212 | dev_info(da9063->dev, | |
213 | "Device detected (chip-ID: 0x%02X, var-ID: 0x%02X)\n", | |
214 | model, variant_id); | |
215 | ||
9cb42e2a OST |
216 | if (variant_code < PMIC_DA9063_BB && variant_code != PMIC_DA9063_AD) { |
217 | dev_err(da9063->dev, | |
218 | "Cannot support variant code: 0x%02X\n", variant_code); | |
8e685483 KG |
219 | return -ENODEV; |
220 | } | |
221 | ||
c1d12c78 | 222 | da9063->variant_code = variant_code; |
8e685483 | 223 | |
a0e08b86 KG |
224 | ret = da9063_irq_init(da9063); |
225 | if (ret) { | |
226 | dev_err(da9063->dev, "Cannot initialize interrupts.\n"); | |
227 | return ret; | |
228 | } | |
229 | ||
439b8bdd DL |
230 | da9063->irq_base = regmap_irq_chip_get_base(da9063->regmap_irq); |
231 | ||
152bed76 | 232 | ret = devm_mfd_add_devices(da9063->dev, PLATFORM_DEVID_NONE, |
c2ffec5e MV |
233 | da9063_common_devs, |
234 | ARRAY_SIZE(da9063_common_devs), | |
152bed76 | 235 | NULL, da9063->irq_base, NULL); |
c2ffec5e MV |
236 | if (ret) { |
237 | dev_err(da9063->dev, "Failed to add child devices\n"); | |
238 | return ret; | |
239 | } | |
240 | ||
241 | if (da9063->type == PMIC_TYPE_DA9063) { | |
242 | ret = devm_mfd_add_devices(da9063->dev, PLATFORM_DEVID_NONE, | |
243 | da9063_devs, ARRAY_SIZE(da9063_devs), | |
244 | NULL, da9063->irq_base, NULL); | |
245 | if (ret) { | |
246 | dev_err(da9063->dev, "Failed to add child devices\n"); | |
247 | return ret; | |
248 | } | |
249 | } | |
8e685483 KG |
250 | |
251 | return ret; | |
252 | } | |
253 | ||
8e685483 | 254 | MODULE_DESCRIPTION("PMIC driver for Dialog DA9063"); |
37778d83 ST |
255 | MODULE_AUTHOR("Krystian Garbaciak"); |
256 | MODULE_AUTHOR("Michal Hajduk"); | |
8e685483 | 257 | MODULE_LICENSE("GPL"); |