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1 | /* da9063-i2c.c: Interrupt support for Dialog DA9063 |
2 | * | |
3 | * Copyright 2012 Dialog Semiconductor Ltd. | |
4 | * Copyright 2013 Philipp Zabel, Pengutronix | |
5 | * | |
6 | * Author: Krystian Garbaciak <krystian.garbaciak@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/i2c.h> | |
18 | #include <linux/regmap.h> | |
19 | #include <linux/delay.h> | |
20 | #include <linux/slab.h> | |
21 | #include <linux/err.h> | |
22 | ||
23 | #include <linux/mfd/core.h> | |
24 | #include <linux/mfd/da9063/core.h> | |
25 | #include <linux/mfd/da9063/pdata.h> | |
26 | #include <linux/mfd/da9063/registers.h> | |
27 | ||
9cb42e2a | 28 | static const struct regmap_range da9063_ad_readable_ranges[] = { |
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29 | { |
30 | .range_min = DA9063_REG_PAGE_CON, | |
9cb42e2a | 31 | .range_max = DA9063_AD_REG_SECOND_D, |
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32 | }, { |
33 | .range_min = DA9063_REG_SEQ, | |
34 | .range_max = DA9063_REG_ID_32_31, | |
35 | }, { | |
36 | .range_min = DA9063_REG_SEQ_A, | |
37 | .range_max = DA9063_REG_AUTO3_LOW, | |
38 | }, { | |
39 | .range_min = DA9063_REG_T_OFFSET, | |
9cb42e2a | 40 | .range_max = DA9063_AD_REG_GP_ID_19, |
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41 | }, { |
42 | .range_min = DA9063_REG_CHIP_ID, | |
43 | .range_max = DA9063_REG_CHIP_VARIANT, | |
44 | }, | |
45 | }; | |
46 | ||
9cb42e2a | 47 | static const struct regmap_range da9063_ad_writeable_ranges[] = { |
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48 | { |
49 | .range_min = DA9063_REG_PAGE_CON, | |
50 | .range_max = DA9063_REG_PAGE_CON, | |
51 | }, { | |
52 | .range_min = DA9063_REG_FAULT_LOG, | |
53 | .range_max = DA9063_REG_VSYS_MON, | |
54 | }, { | |
55 | .range_min = DA9063_REG_COUNT_S, | |
9cb42e2a | 56 | .range_max = DA9063_AD_REG_ALARM_Y, |
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57 | }, { |
58 | .range_min = DA9063_REG_SEQ, | |
59 | .range_max = DA9063_REG_ID_32_31, | |
60 | }, { | |
61 | .range_min = DA9063_REG_SEQ_A, | |
62 | .range_max = DA9063_REG_AUTO3_LOW, | |
63 | }, { | |
64 | .range_min = DA9063_REG_CONFIG_I, | |
9cb42e2a | 65 | .range_max = DA9063_AD_REG_MON_REG_4, |
8e685483 | 66 | }, { |
9cb42e2a OST |
67 | .range_min = DA9063_AD_REG_GP_ID_0, |
68 | .range_max = DA9063_AD_REG_GP_ID_19, | |
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69 | }, |
70 | }; | |
71 | ||
9cb42e2a | 72 | static const struct regmap_range da9063_ad_volatile_ranges[] = { |
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73 | { |
74 | .range_min = DA9063_REG_STATUS_A, | |
75 | .range_max = DA9063_REG_EVENT_D, | |
76 | }, { | |
77 | .range_min = DA9063_REG_CONTROL_F, | |
78 | .range_max = DA9063_REG_CONTROL_F, | |
79 | }, { | |
80 | .range_min = DA9063_REG_ADC_MAN, | |
81 | .range_max = DA9063_REG_ADC_MAN, | |
82 | }, { | |
83 | .range_min = DA9063_REG_ADC_RES_L, | |
9cb42e2a | 84 | .range_max = DA9063_AD_REG_SECOND_D, |
8e685483 | 85 | }, { |
9cb42e2a OST |
86 | .range_min = DA9063_AD_REG_MON_REG_5, |
87 | .range_max = DA9063_AD_REG_MON_REG_6, | |
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88 | }, |
89 | }; | |
90 | ||
9cb42e2a OST |
91 | static const struct regmap_access_table da9063_ad_readable_table = { |
92 | .yes_ranges = da9063_ad_readable_ranges, | |
93 | .n_yes_ranges = ARRAY_SIZE(da9063_ad_readable_ranges), | |
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94 | }; |
95 | ||
9cb42e2a OST |
96 | static const struct regmap_access_table da9063_ad_writeable_table = { |
97 | .yes_ranges = da9063_ad_writeable_ranges, | |
98 | .n_yes_ranges = ARRAY_SIZE(da9063_ad_writeable_ranges), | |
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99 | }; |
100 | ||
9cb42e2a OST |
101 | static const struct regmap_access_table da9063_ad_volatile_table = { |
102 | .yes_ranges = da9063_ad_volatile_ranges, | |
103 | .n_yes_ranges = ARRAY_SIZE(da9063_ad_volatile_ranges), | |
104 | }; | |
105 | ||
106 | static const struct regmap_range da9063_bb_readable_ranges[] = { | |
107 | { | |
108 | .range_min = DA9063_REG_PAGE_CON, | |
109 | .range_max = DA9063_BB_REG_SECOND_D, | |
110 | }, { | |
111 | .range_min = DA9063_REG_SEQ, | |
112 | .range_max = DA9063_REG_ID_32_31, | |
113 | }, { | |
114 | .range_min = DA9063_REG_SEQ_A, | |
115 | .range_max = DA9063_REG_AUTO3_LOW, | |
116 | }, { | |
117 | .range_min = DA9063_REG_T_OFFSET, | |
118 | .range_max = DA9063_BB_REG_GP_ID_19, | |
119 | }, { | |
120 | .range_min = DA9063_REG_CHIP_ID, | |
121 | .range_max = DA9063_REG_CHIP_VARIANT, | |
122 | }, | |
123 | }; | |
124 | ||
125 | static const struct regmap_range da9063_bb_writeable_ranges[] = { | |
126 | { | |
127 | .range_min = DA9063_REG_PAGE_CON, | |
128 | .range_max = DA9063_REG_PAGE_CON, | |
129 | }, { | |
130 | .range_min = DA9063_REG_FAULT_LOG, | |
131 | .range_max = DA9063_REG_VSYS_MON, | |
132 | }, { | |
133 | .range_min = DA9063_REG_COUNT_S, | |
134 | .range_max = DA9063_BB_REG_ALARM_Y, | |
135 | }, { | |
136 | .range_min = DA9063_REG_SEQ, | |
137 | .range_max = DA9063_REG_ID_32_31, | |
138 | }, { | |
139 | .range_min = DA9063_REG_SEQ_A, | |
140 | .range_max = DA9063_REG_AUTO3_LOW, | |
141 | }, { | |
142 | .range_min = DA9063_REG_CONFIG_I, | |
143 | .range_max = DA9063_BB_REG_MON_REG_4, | |
144 | }, { | |
145 | .range_min = DA9063_BB_REG_GP_ID_0, | |
146 | .range_max = DA9063_BB_REG_GP_ID_19, | |
147 | }, | |
148 | }; | |
149 | ||
150 | static const struct regmap_range da9063_bb_volatile_ranges[] = { | |
151 | { | |
152 | .range_min = DA9063_REG_STATUS_A, | |
153 | .range_max = DA9063_REG_EVENT_D, | |
154 | }, { | |
155 | .range_min = DA9063_REG_CONTROL_F, | |
156 | .range_max = DA9063_REG_CONTROL_F, | |
157 | }, { | |
158 | .range_min = DA9063_REG_ADC_MAN, | |
159 | .range_max = DA9063_REG_ADC_MAN, | |
160 | }, { | |
161 | .range_min = DA9063_REG_ADC_RES_L, | |
162 | .range_max = DA9063_BB_REG_SECOND_D, | |
163 | }, { | |
164 | .range_min = DA9063_BB_REG_MON_REG_5, | |
165 | .range_max = DA9063_BB_REG_MON_REG_6, | |
166 | }, | |
167 | }; | |
168 | ||
169 | static const struct regmap_access_table da9063_bb_readable_table = { | |
170 | .yes_ranges = da9063_bb_readable_ranges, | |
171 | .n_yes_ranges = ARRAY_SIZE(da9063_bb_readable_ranges), | |
172 | }; | |
173 | ||
174 | static const struct regmap_access_table da9063_bb_writeable_table = { | |
175 | .yes_ranges = da9063_bb_writeable_ranges, | |
176 | .n_yes_ranges = ARRAY_SIZE(da9063_bb_writeable_ranges), | |
177 | }; | |
178 | ||
179 | static const struct regmap_access_table da9063_bb_volatile_table = { | |
180 | .yes_ranges = da9063_bb_volatile_ranges, | |
181 | .n_yes_ranges = ARRAY_SIZE(da9063_bb_volatile_ranges), | |
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182 | }; |
183 | ||
184 | static const struct regmap_range_cfg da9063_range_cfg[] = { | |
185 | { | |
186 | .range_min = DA9063_REG_PAGE_CON, | |
187 | .range_max = DA9063_REG_CHIP_VARIANT, | |
188 | .selector_reg = DA9063_REG_PAGE_CON, | |
189 | .selector_mask = 1 << DA9063_I2C_PAGE_SEL_SHIFT, | |
190 | .selector_shift = DA9063_I2C_PAGE_SEL_SHIFT, | |
191 | .window_start = 0, | |
192 | .window_len = 256, | |
193 | } | |
194 | }; | |
195 | ||
196 | static struct regmap_config da9063_regmap_config = { | |
197 | .reg_bits = 8, | |
198 | .val_bits = 8, | |
199 | .ranges = da9063_range_cfg, | |
200 | .num_ranges = ARRAY_SIZE(da9063_range_cfg), | |
201 | .max_register = DA9063_REG_CHIP_VARIANT, | |
202 | ||
203 | .cache_type = REGCACHE_RBTREE, | |
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204 | }; |
205 | ||
206 | static int da9063_i2c_probe(struct i2c_client *i2c, | |
207 | const struct i2c_device_id *id) | |
208 | { | |
209 | struct da9063 *da9063; | |
210 | int ret; | |
211 | ||
212 | da9063 = devm_kzalloc(&i2c->dev, sizeof(struct da9063), GFP_KERNEL); | |
213 | if (da9063 == NULL) | |
214 | return -ENOMEM; | |
215 | ||
216 | i2c_set_clientdata(i2c, da9063); | |
217 | da9063->dev = &i2c->dev; | |
218 | da9063->chip_irq = i2c->irq; | |
219 | ||
9cb42e2a OST |
220 | if (da9063->variant_code == PMIC_DA9063_AD) { |
221 | da9063_regmap_config.rd_table = &da9063_ad_readable_table; | |
222 | da9063_regmap_config.wr_table = &da9063_ad_writeable_table; | |
223 | da9063_regmap_config.volatile_table = &da9063_ad_volatile_table; | |
224 | } else { | |
225 | da9063_regmap_config.rd_table = &da9063_bb_readable_table; | |
226 | da9063_regmap_config.wr_table = &da9063_bb_writeable_table; | |
227 | da9063_regmap_config.volatile_table = &da9063_bb_volatile_table; | |
228 | } | |
229 | ||
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230 | da9063->regmap = devm_regmap_init_i2c(i2c, &da9063_regmap_config); |
231 | if (IS_ERR(da9063->regmap)) { | |
232 | ret = PTR_ERR(da9063->regmap); | |
233 | dev_err(da9063->dev, "Failed to allocate register map: %d\n", | |
234 | ret); | |
235 | return ret; | |
236 | } | |
237 | ||
238 | return da9063_device_init(da9063, i2c->irq); | |
239 | } | |
240 | ||
241 | static int da9063_i2c_remove(struct i2c_client *i2c) | |
242 | { | |
243 | struct da9063 *da9063 = i2c_get_clientdata(i2c); | |
244 | ||
245 | da9063_device_exit(da9063); | |
246 | ||
247 | return 0; | |
248 | } | |
249 | ||
250 | static const struct i2c_device_id da9063_i2c_id[] = { | |
251 | {"da9063", PMIC_DA9063}, | |
252 | {}, | |
253 | }; | |
254 | MODULE_DEVICE_TABLE(i2c, da9063_i2c_id); | |
255 | ||
256 | static struct i2c_driver da9063_i2c_driver = { | |
257 | .driver = { | |
258 | .name = "da9063", | |
259 | .owner = THIS_MODULE, | |
260 | }, | |
261 | .probe = da9063_i2c_probe, | |
262 | .remove = da9063_i2c_remove, | |
263 | .id_table = da9063_i2c_id, | |
264 | }; | |
265 | ||
266 | module_i2c_driver(da9063_i2c_driver); |