GNU Linux-libre 4.4.289-gnu1
[releases.git] / drivers / mfd / da9063-i2c.c
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
28 #include <linux/of.h>
29 #include <linux/regulator/of_regulator.h>
30
31 static 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
50 static 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
75 static const struct regmap_range da9063_ad_volatile_ranges[] = {
76         {
77                 .range_min = DA9063_REG_STATUS_A,
78                 .range_max = DA9063_REG_EVENT_D,
79         }, {
80                 .range_min = DA9063_REG_CONTROL_F,
81                 .range_max = DA9063_REG_CONTROL_F,
82         }, {
83                 .range_min = DA9063_REG_ADC_MAN,
84                 .range_max = DA9063_REG_ADC_MAN,
85         }, {
86                 .range_min = DA9063_REG_ADC_RES_L,
87                 .range_max = DA9063_AD_REG_SECOND_D,
88         }, {
89                 .range_min = DA9063_AD_REG_MON_REG_5,
90                 .range_max = DA9063_AD_REG_MON_REG_6,
91         },
92 };
93
94 static const struct regmap_access_table da9063_ad_readable_table = {
95         .yes_ranges = da9063_ad_readable_ranges,
96         .n_yes_ranges = ARRAY_SIZE(da9063_ad_readable_ranges),
97 };
98
99 static const struct regmap_access_table da9063_ad_writeable_table = {
100         .yes_ranges = da9063_ad_writeable_ranges,
101         .n_yes_ranges = ARRAY_SIZE(da9063_ad_writeable_ranges),
102 };
103
104 static const struct regmap_access_table da9063_ad_volatile_table = {
105         .yes_ranges = da9063_ad_volatile_ranges,
106         .n_yes_ranges = ARRAY_SIZE(da9063_ad_volatile_ranges),
107 };
108
109 static const struct regmap_range da9063_bb_readable_ranges[] = {
110         {
111                 .range_min = DA9063_REG_PAGE_CON,
112                 .range_max = DA9063_BB_REG_SECOND_D,
113         }, {
114                 .range_min = DA9063_REG_SEQ,
115                 .range_max = DA9063_REG_ID_32_31,
116         }, {
117                 .range_min = DA9063_REG_SEQ_A,
118                 .range_max = DA9063_REG_AUTO3_LOW,
119         }, {
120                 .range_min = DA9063_REG_T_OFFSET,
121                 .range_max = DA9063_BB_REG_GP_ID_19,
122         }, {
123                 .range_min = DA9063_REG_CHIP_ID,
124                 .range_max = DA9063_REG_CHIP_VARIANT,
125         },
126 };
127
128 static const struct regmap_range da9063_bb_writeable_ranges[] = {
129         {
130                 .range_min = DA9063_REG_PAGE_CON,
131                 .range_max = DA9063_REG_PAGE_CON,
132         }, {
133                 .range_min = DA9063_REG_FAULT_LOG,
134                 .range_max = DA9063_REG_VSYS_MON,
135         }, {
136                 .range_min = DA9063_REG_COUNT_S,
137                 .range_max = DA9063_BB_REG_ALARM_Y,
138         }, {
139                 .range_min = DA9063_REG_SEQ,
140                 .range_max = DA9063_REG_ID_32_31,
141         }, {
142                 .range_min = DA9063_REG_SEQ_A,
143                 .range_max = DA9063_REG_AUTO3_LOW,
144         }, {
145                 .range_min = DA9063_REG_CONFIG_I,
146                 .range_max = DA9063_BB_REG_MON_REG_4,
147         }, {
148                 .range_min = DA9063_BB_REG_GP_ID_0,
149                 .range_max = DA9063_BB_REG_GP_ID_19,
150         },
151 };
152
153 static const struct regmap_range da9063_bb_volatile_ranges[] = {
154         {
155                 .range_min = DA9063_REG_STATUS_A,
156                 .range_max = DA9063_REG_EVENT_D,
157         }, {
158                 .range_min = DA9063_REG_CONTROL_F,
159                 .range_max = DA9063_REG_CONTROL_F,
160         }, {
161                 .range_min = DA9063_REG_ADC_MAN,
162                 .range_max = DA9063_REG_ADC_MAN,
163         }, {
164                 .range_min = DA9063_REG_ADC_RES_L,
165                 .range_max = DA9063_BB_REG_SECOND_D,
166         }, {
167                 .range_min = DA9063_BB_REG_MON_REG_5,
168                 .range_max = DA9063_BB_REG_MON_REG_6,
169         },
170 };
171
172 static const struct regmap_access_table da9063_bb_readable_table = {
173         .yes_ranges = da9063_bb_readable_ranges,
174         .n_yes_ranges = ARRAY_SIZE(da9063_bb_readable_ranges),
175 };
176
177 static const struct regmap_access_table da9063_bb_writeable_table = {
178         .yes_ranges = da9063_bb_writeable_ranges,
179         .n_yes_ranges = ARRAY_SIZE(da9063_bb_writeable_ranges),
180 };
181
182 static const struct regmap_access_table da9063_bb_volatile_table = {
183         .yes_ranges = da9063_bb_volatile_ranges,
184         .n_yes_ranges = ARRAY_SIZE(da9063_bb_volatile_ranges),
185 };
186
187 static const struct regmap_range_cfg da9063_range_cfg[] = {
188         {
189                 .range_min = DA9063_REG_PAGE_CON,
190                 .range_max = DA9063_REG_CHIP_VARIANT,
191                 .selector_reg = DA9063_REG_PAGE_CON,
192                 .selector_mask = 1 << DA9063_I2C_PAGE_SEL_SHIFT,
193                 .selector_shift = DA9063_I2C_PAGE_SEL_SHIFT,
194                 .window_start = 0,
195                 .window_len = 256,
196         }
197 };
198
199 static struct regmap_config da9063_regmap_config = {
200         .reg_bits = 8,
201         .val_bits = 8,
202         .ranges = da9063_range_cfg,
203         .num_ranges = ARRAY_SIZE(da9063_range_cfg),
204         .max_register = DA9063_REG_CHIP_VARIANT,
205
206         .cache_type = REGCACHE_RBTREE,
207 };
208
209 static const struct of_device_id da9063_dt_ids[] = {
210         { .compatible = "dlg,da9063", },
211         { }
212 };
213 MODULE_DEVICE_TABLE(of, da9063_dt_ids);
214 static int da9063_i2c_probe(struct i2c_client *i2c,
215         const struct i2c_device_id *id)
216 {
217         struct da9063 *da9063;
218         int ret;
219
220         da9063 = devm_kzalloc(&i2c->dev, sizeof(struct da9063), GFP_KERNEL);
221         if (da9063 == NULL)
222                 return -ENOMEM;
223
224         i2c_set_clientdata(i2c, da9063);
225         da9063->dev = &i2c->dev;
226         da9063->chip_irq = i2c->irq;
227
228         if (da9063->variant_code == PMIC_DA9063_AD) {
229                 da9063_regmap_config.rd_table = &da9063_ad_readable_table;
230                 da9063_regmap_config.wr_table = &da9063_ad_writeable_table;
231                 da9063_regmap_config.volatile_table = &da9063_ad_volatile_table;
232         } else {
233                 da9063_regmap_config.rd_table = &da9063_bb_readable_table;
234                 da9063_regmap_config.wr_table = &da9063_bb_writeable_table;
235                 da9063_regmap_config.volatile_table = &da9063_bb_volatile_table;
236         }
237
238         da9063->regmap = devm_regmap_init_i2c(i2c, &da9063_regmap_config);
239         if (IS_ERR(da9063->regmap)) {
240                 ret = PTR_ERR(da9063->regmap);
241                 dev_err(da9063->dev, "Failed to allocate register map: %d\n",
242                         ret);
243                 return ret;
244         }
245
246         return da9063_device_init(da9063, i2c->irq);
247 }
248
249 static int da9063_i2c_remove(struct i2c_client *i2c)
250 {
251         struct da9063 *da9063 = i2c_get_clientdata(i2c);
252
253         da9063_device_exit(da9063);
254
255         return 0;
256 }
257
258 static const struct i2c_device_id da9063_i2c_id[] = {
259         {"da9063", PMIC_DA9063},
260         {},
261 };
262 MODULE_DEVICE_TABLE(i2c, da9063_i2c_id);
263
264 static struct i2c_driver da9063_i2c_driver = {
265         .driver = {
266                 .name = "da9063",
267                 .of_match_table = of_match_ptr(da9063_dt_ids),
268         },
269         .probe    = da9063_i2c_probe,
270         .remove   = da9063_i2c_remove,
271         .id_table = da9063_i2c_id,
272 };
273
274 module_i2c_driver(da9063_i2c_driver);