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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, Dialog Semiconductor
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
28#include <linux/of.h>
29#include <linux/regulator/of_regulator.h>
30
31static const struct regmap_range da9063_ad_readable_ranges[] = {
32 {
33 .range_min = DA9063_REG_PAGE_CON,
34 .range_max = DA9063_AD_REG_SECOND_D,
35 }, {
36 .range_min = DA9063_REG_SEQ,
37 .range_max = DA9063_REG_ID_32_31,
38 }, {
39 .range_min = DA9063_REG_SEQ_A,
40 .range_max = DA9063_REG_AUTO3_LOW,
41 }, {
42 .range_min = DA9063_REG_T_OFFSET,
43 .range_max = DA9063_AD_REG_GP_ID_19,
44 }, {
45 .range_min = DA9063_REG_CHIP_ID,
46 .range_max = DA9063_REG_CHIP_VARIANT,
47 },
48};
49
50static const struct regmap_range da9063_ad_writeable_ranges[] = {
51 {
52 .range_min = DA9063_REG_PAGE_CON,
53 .range_max = DA9063_REG_PAGE_CON,
54 }, {
55 .range_min = DA9063_REG_FAULT_LOG,
56 .range_max = DA9063_REG_VSYS_MON,
57 }, {
58 .range_min = DA9063_REG_COUNT_S,
59 .range_max = DA9063_AD_REG_ALARM_Y,
60 }, {
61 .range_min = DA9063_REG_SEQ,
62 .range_max = DA9063_REG_ID_32_31,
63 }, {
64 .range_min = DA9063_REG_SEQ_A,
65 .range_max = DA9063_REG_AUTO3_LOW,
66 }, {
67 .range_min = DA9063_REG_CONFIG_I,
68 .range_max = DA9063_AD_REG_MON_REG_4,
69 }, {
70 .range_min = DA9063_AD_REG_GP_ID_0,
71 .range_max = DA9063_AD_REG_GP_ID_19,
72 },
73};
74
75static const struct regmap_range da9063_ad_volatile_ranges[] = {
76 {
77 .range_min = DA9063_REG_PAGE_CON,
78 .range_max = DA9063_REG_EVENT_D,
79 }, {
80 .range_min = DA9063_REG_CONTROL_A,
81 .range_max = DA9063_REG_CONTROL_B,
82 }, {
83 .range_min = DA9063_REG_CONTROL_E,
84 .range_max = DA9063_REG_CONTROL_F,
85 }, {
86 .range_min = DA9063_REG_BCORE2_CONT,
87 .range_max = DA9063_REG_LDO11_CONT,
88 }, {
89 .range_min = DA9063_REG_DVC_1,
90 .range_max = DA9063_REG_ADC_MAN,
91 }, {
92 .range_min = DA9063_REG_ADC_RES_L,
93 .range_max = DA9063_AD_REG_SECOND_D,
94 }, {
95 .range_min = DA9063_REG_SEQ,
96 .range_max = DA9063_REG_SEQ,
97 }, {
98 .range_min = DA9063_REG_EN_32K,
99 .range_max = DA9063_REG_EN_32K,
100 }, {
101 .range_min = DA9063_AD_REG_MON_REG_5,
102 .range_max = DA9063_AD_REG_MON_REG_6,
103 },
104};
105
106static const struct regmap_access_table da9063_ad_readable_table = {
107 .yes_ranges = da9063_ad_readable_ranges,
108 .n_yes_ranges = ARRAY_SIZE(da9063_ad_readable_ranges),
109};
110
111static const struct regmap_access_table da9063_ad_writeable_table = {
112 .yes_ranges = da9063_ad_writeable_ranges,
113 .n_yes_ranges = ARRAY_SIZE(da9063_ad_writeable_ranges),
114};
115
116static const struct regmap_access_table da9063_ad_volatile_table = {
117 .yes_ranges = da9063_ad_volatile_ranges,
118 .n_yes_ranges = ARRAY_SIZE(da9063_ad_volatile_ranges),
119};
120
121static const struct regmap_range da9063_bb_readable_ranges[] = {
122 {
123 .range_min = DA9063_REG_PAGE_CON,
124 .range_max = DA9063_BB_REG_SECOND_D,
125 }, {
126 .range_min = DA9063_REG_SEQ,
127 .range_max = DA9063_REG_ID_32_31,
128 }, {
129 .range_min = DA9063_REG_SEQ_A,
130 .range_max = DA9063_REG_AUTO3_LOW,
131 }, {
132 .range_min = DA9063_REG_T_OFFSET,
133 .range_max = DA9063_BB_REG_GP_ID_19,
134 }, {
135 .range_min = DA9063_REG_CHIP_ID,
136 .range_max = DA9063_REG_CHIP_VARIANT,
137 },
138};
139
140static const struct regmap_range da9063_bb_writeable_ranges[] = {
141 {
142 .range_min = DA9063_REG_PAGE_CON,
143 .range_max = DA9063_REG_PAGE_CON,
144 }, {
145 .range_min = DA9063_REG_FAULT_LOG,
146 .range_max = DA9063_REG_VSYS_MON,
147 }, {
148 .range_min = DA9063_REG_COUNT_S,
149 .range_max = DA9063_BB_REG_ALARM_Y,
150 }, {
151 .range_min = DA9063_REG_SEQ,
152 .range_max = DA9063_REG_ID_32_31,
153 }, {
154 .range_min = DA9063_REG_SEQ_A,
155 .range_max = DA9063_REG_AUTO3_LOW,
156 }, {
157 .range_min = DA9063_REG_CONFIG_I,
158 .range_max = DA9063_BB_REG_MON_REG_4,
159 }, {
160 .range_min = DA9063_BB_REG_GP_ID_0,
161 .range_max = DA9063_BB_REG_GP_ID_19,
162 },
163};
164
165static const struct regmap_range da9063_bb_volatile_ranges[] = {
166 {
167 .range_min = DA9063_REG_PAGE_CON,
168 .range_max = DA9063_REG_EVENT_D,
169 }, {
170 .range_min = DA9063_REG_CONTROL_A,
171 .range_max = DA9063_REG_CONTROL_B,
172 }, {
173 .range_min = DA9063_REG_CONTROL_E,
174 .range_max = DA9063_REG_CONTROL_F,
175 }, {
176 .range_min = DA9063_REG_BCORE2_CONT,
177 .range_max = DA9063_REG_LDO11_CONT,
178 }, {
179 .range_min = DA9063_REG_DVC_1,
180 .range_max = DA9063_REG_ADC_MAN,
181 }, {
182 .range_min = DA9063_REG_ADC_RES_L,
183 .range_max = DA9063_BB_REG_SECOND_D,
184 }, {
185 .range_min = DA9063_REG_SEQ,
186 .range_max = DA9063_REG_SEQ,
187 }, {
188 .range_min = DA9063_REG_EN_32K,
189 .range_max = DA9063_REG_EN_32K,
190 }, {
191 .range_min = DA9063_BB_REG_MON_REG_5,
192 .range_max = DA9063_BB_REG_MON_REG_6,
193 },
194};
195
196static const struct regmap_access_table da9063_bb_readable_table = {
197 .yes_ranges = da9063_bb_readable_ranges,
198 .n_yes_ranges = ARRAY_SIZE(da9063_bb_readable_ranges),
199};
200
201static const struct regmap_access_table da9063_bb_writeable_table = {
202 .yes_ranges = da9063_bb_writeable_ranges,
203 .n_yes_ranges = ARRAY_SIZE(da9063_bb_writeable_ranges),
204};
205
206static const struct regmap_access_table da9063_bb_volatile_table = {
207 .yes_ranges = da9063_bb_volatile_ranges,
208 .n_yes_ranges = ARRAY_SIZE(da9063_bb_volatile_ranges),
209};
210
211static const struct regmap_range_cfg da9063_range_cfg[] = {
212 {
213 .range_min = DA9063_REG_PAGE_CON,
214 .range_max = DA9063_REG_CHIP_VARIANT,
215 .selector_reg = DA9063_REG_PAGE_CON,
216 .selector_mask = 1 << DA9063_I2C_PAGE_SEL_SHIFT,
217 .selector_shift = DA9063_I2C_PAGE_SEL_SHIFT,
218 .window_start = 0,
219 .window_len = 256,
220 }
221};
222
223static struct regmap_config da9063_regmap_config = {
224 .reg_bits = 8,
225 .val_bits = 8,
226 .ranges = da9063_range_cfg,
227 .num_ranges = ARRAY_SIZE(da9063_range_cfg),
228 .max_register = DA9063_REG_CHIP_VARIANT,
229
230 .cache_type = REGCACHE_RBTREE,
231};
232
233static const struct of_device_id da9063_dt_ids[] = {
234 { .compatible = "dlg,da9063", },
235 { }
236};
237MODULE_DEVICE_TABLE(of, da9063_dt_ids);
238static int da9063_i2c_probe(struct i2c_client *i2c,
239 const struct i2c_device_id *id)
240{
241 struct da9063 *da9063;
242 int ret;
243
244 da9063 = devm_kzalloc(&i2c->dev, sizeof(struct da9063), GFP_KERNEL);
245 if (da9063 == NULL)
246 return -ENOMEM;
247
248 i2c_set_clientdata(i2c, da9063);
249 da9063->dev = &i2c->dev;
250 da9063->chip_irq = i2c->irq;
251
252 if (da9063->variant_code == PMIC_DA9063_AD) {
253 da9063_regmap_config.rd_table = &da9063_ad_readable_table;
254 da9063_regmap_config.wr_table = &da9063_ad_writeable_table;
255 da9063_regmap_config.volatile_table = &da9063_ad_volatile_table;
256 } else {
257 da9063_regmap_config.rd_table = &da9063_bb_readable_table;
258 da9063_regmap_config.wr_table = &da9063_bb_writeable_table;
259 da9063_regmap_config.volatile_table = &da9063_bb_volatile_table;
260 }
261
262 da9063->regmap = devm_regmap_init_i2c(i2c, &da9063_regmap_config);
263 if (IS_ERR(da9063->regmap)) {
264 ret = PTR_ERR(da9063->regmap);
265 dev_err(da9063->dev, "Failed to allocate register map: %d\n",
266 ret);
267 return ret;
268 }
269
270 return da9063_device_init(da9063, i2c->irq);
271}
272
273static int da9063_i2c_remove(struct i2c_client *i2c)
274{
275 struct da9063 *da9063 = i2c_get_clientdata(i2c);
276
277 da9063_device_exit(da9063);
278
279 return 0;
280}
281
282static const struct i2c_device_id da9063_i2c_id[] = {
283 {"da9063", PMIC_DA9063},
284 {},
285};
286MODULE_DEVICE_TABLE(i2c, da9063_i2c_id);
287
288static struct i2c_driver da9063_i2c_driver = {
289 .driver = {
290 .name = "da9063",
291 .of_match_table = of_match_ptr(da9063_dt_ids),
292 },
293 .probe = da9063_i2c_probe,
294 .remove = da9063_i2c_remove,
295 .id_table = da9063_i2c_id,
296};
297
298module_i2c_driver(da9063_i2c_driver);