1 // SPDX-License-Identifier: GPL-2.0+
2 /* I2C support for Dialog DA9063
3 *
4 * Copyright 2012 Dialog Semiconductor Ltd.
5 * Copyright 2013 Philipp Zabel, Pengutronix
6 *
7 * Author: Krystian Garbaciak, Dialog Semiconductor
8 */
9
10 #include <linux/kernel.h>
11 #include <linux/module.h>
12 #include <linux/i2c.h>
13 #include <linux/regmap.h>
14 #include <linux/delay.h>
15 #include <linux/slab.h>
16 #include <linux/err.h>
17
18 #include <linux/mfd/core.h>
19 #include <linux/mfd/da9063/core.h>
20 #include <linux/mfd/da9063/registers.h>
21
22 #include <linux/of.h>
23 #include <linux/regulator/of_regulator.h>
24
25 static const struct regmap_range da9063_ad_readable_ranges[] = {
26 regmap_reg_range(DA9063_REG_PAGE_CON, DA9063_AD_REG_SECOND_D),
27 regmap_reg_range(DA9063_REG_SEQ, DA9063_REG_ID_32_31),
28 regmap_reg_range(DA9063_REG_SEQ_A, DA9063_REG_AUTO3_LOW),
29 regmap_reg_range(DA9063_REG_T_OFFSET, DA9063_AD_REG_GP_ID_19),
30 regmap_reg_range(DA9063_REG_CHIP_ID, DA9063_REG_CHIP_VARIANT),
31 };
32
33 static const struct regmap_range da9063_ad_writeable_ranges[] = {
34 regmap_reg_range(DA9063_REG_PAGE_CON, DA9063_REG_PAGE_CON),
35 regmap_reg_range(DA9063_REG_FAULT_LOG, DA9063_REG_VSYS_MON),
36 regmap_reg_range(DA9063_REG_COUNT_S, DA9063_AD_REG_ALARM_Y),
37 regmap_reg_range(DA9063_REG_SEQ, DA9063_REG_ID_32_31),
38 regmap_reg_range(DA9063_REG_SEQ_A, DA9063_REG_AUTO3_LOW),
39 regmap_reg_range(DA9063_REG_CONFIG_I, DA9063_AD_REG_MON_REG_4),
40 regmap_reg_range(DA9063_AD_REG_GP_ID_0, DA9063_AD_REG_GP_ID_19),
41 };
42
43 static const struct regmap_range da9063_ad_volatile_ranges[] = {
44 regmap_reg_range(DA9063_REG_PAGE_CON, DA9063_REG_EVENT_D),
45 regmap_reg_range(DA9063_REG_CONTROL_A, DA9063_REG_CONTROL_B),
46 regmap_reg_range(DA9063_REG_CONTROL_E, DA9063_REG_CONTROL_F),
47 regmap_reg_range(DA9063_REG_BCORE2_CONT, DA9063_REG_LDO11_CONT),
48 regmap_reg_range(DA9063_REG_DVC_1, DA9063_REG_ADC_MAN),
49 regmap_reg_range(DA9063_REG_ADC_RES_L, DA9063_AD_REG_SECOND_D),
50 regmap_reg_range(DA9063_REG_SEQ, DA9063_REG_SEQ),
51 regmap_reg_range(DA9063_REG_EN_32K, DA9063_REG_EN_32K),
52 regmap_reg_range(DA9063_AD_REG_MON_REG_5, DA9063_AD_REG_MON_REG_6),
53 };
54
55 static const struct regmap_access_table da9063_ad_readable_table = {
56 .yes_ranges = da9063_ad_readable_ranges,
57 .n_yes_ranges = ARRAY_SIZE(da9063_ad_readable_ranges),
58 };
59
60 static const struct regmap_access_table da9063_ad_writeable_table = {
61 .yes_ranges = da9063_ad_writeable_ranges,
62 .n_yes_ranges = ARRAY_SIZE(da9063_ad_writeable_ranges),
63 };
64
65 static const struct regmap_access_table da9063_ad_volatile_table = {
66 .yes_ranges = da9063_ad_volatile_ranges,
67 .n_yes_ranges = ARRAY_SIZE(da9063_ad_volatile_ranges),
68 };
69
70 static const struct regmap_range da9063_bb_readable_ranges[] = {
71 regmap_reg_range(DA9063_REG_PAGE_CON, DA9063_BB_REG_SECOND_D),
72 regmap_reg_range(DA9063_REG_SEQ, DA9063_REG_ID_32_31),
73 regmap_reg_range(DA9063_REG_SEQ_A, DA9063_REG_AUTO3_LOW),
74 regmap_reg_range(DA9063_REG_T_OFFSET, DA9063_BB_REG_GP_ID_19),
75 regmap_reg_range(DA9063_REG_CHIP_ID, DA9063_REG_CHIP_VARIANT),
76 };
77
78 static const struct regmap_range da9063_bb_writeable_ranges[] = {
79 regmap_reg_range(DA9063_REG_PAGE_CON, DA9063_REG_PAGE_CON),
80 regmap_reg_range(DA9063_REG_FAULT_LOG, DA9063_REG_VSYS_MON),
81 regmap_reg_range(DA9063_REG_COUNT_S, DA9063_BB_REG_ALARM_Y),
82 regmap_reg_range(DA9063_REG_SEQ, DA9063_REG_ID_32_31),
83 regmap_reg_range(DA9063_REG_SEQ_A, DA9063_REG_AUTO3_LOW),
84 regmap_reg_range(DA9063_REG_CONFIG_I, DA9063_BB_REG_MON_REG_4),
85 regmap_reg_range(DA9063_BB_REG_GP_ID_0, DA9063_BB_REG_GP_ID_19),
86 };
87
88 static const struct regmap_range da9063_bb_volatile_ranges[] = {
89 regmap_reg_range(DA9063_REG_PAGE_CON, DA9063_REG_EVENT_D),
90 regmap_reg_range(DA9063_REG_CONTROL_A, DA9063_REG_CONTROL_B),
91 regmap_reg_range(DA9063_REG_CONTROL_E, DA9063_REG_CONTROL_F),
92 regmap_reg_range(DA9063_REG_BCORE2_CONT, DA9063_REG_LDO11_CONT),
93 regmap_reg_range(DA9063_REG_DVC_1, DA9063_REG_ADC_MAN),
94 regmap_reg_range(DA9063_REG_ADC_RES_L, DA9063_BB_REG_SECOND_D),
95 regmap_reg_range(DA9063_REG_SEQ, DA9063_REG_SEQ),
96 regmap_reg_range(DA9063_REG_EN_32K, DA9063_REG_EN_32K),
97 regmap_reg_range(DA9063_BB_REG_MON_REG_5, DA9063_BB_REG_MON_REG_6),
98 };
99
100 static const struct regmap_access_table da9063_bb_readable_table = {
101 .yes_ranges = da9063_bb_readable_ranges,
102 .n_yes_ranges = ARRAY_SIZE(da9063_bb_readable_ranges),
103 };
104
105 static const struct regmap_access_table da9063_bb_writeable_table = {
106 .yes_ranges = da9063_bb_writeable_ranges,
107 .n_yes_ranges = ARRAY_SIZE(da9063_bb_writeable_ranges),
108 };
109
110 static const struct regmap_access_table da9063_bb_volatile_table = {
111 .yes_ranges = da9063_bb_volatile_ranges,
112 .n_yes_ranges = ARRAY_SIZE(da9063_bb_volatile_ranges),
113 };
114
115 static const struct regmap_range da9063l_bb_readable_ranges[] = {
116 regmap_reg_range(DA9063_REG_PAGE_CON, DA9063_REG_MON_A10_RES),
117 regmap_reg_range(DA9063_REG_SEQ, DA9063_REG_ID_32_31),
118 regmap_reg_range(DA9063_REG_SEQ_A, DA9063_REG_AUTO3_LOW),
119 regmap_reg_range(DA9063_REG_T_OFFSET, DA9063_BB_REG_GP_ID_19),
120 regmap_reg_range(DA9063_REG_CHIP_ID, DA9063_REG_CHIP_VARIANT),
121 };
122
123 static const struct regmap_range da9063l_bb_writeable_ranges[] = {
124 regmap_reg_range(DA9063_REG_PAGE_CON, DA9063_REG_PAGE_CON),
125 regmap_reg_range(DA9063_REG_FAULT_LOG, DA9063_REG_VSYS_MON),
126 regmap_reg_range(DA9063_REG_SEQ, DA9063_REG_ID_32_31),
127 regmap_reg_range(DA9063_REG_SEQ_A, DA9063_REG_AUTO3_LOW),
128 regmap_reg_range(DA9063_REG_CONFIG_I, DA9063_BB_REG_MON_REG_4),
129 regmap_reg_range(DA9063_BB_REG_GP_ID_0, DA9063_BB_REG_GP_ID_19),
130 };
131
132 static const struct regmap_range da9063l_bb_volatile_ranges[] = {
133 regmap_reg_range(DA9063_REG_PAGE_CON, DA9063_REG_EVENT_D),
134 regmap_reg_range(DA9063_REG_CONTROL_A, DA9063_REG_CONTROL_B),
135 regmap_reg_range(DA9063_REG_CONTROL_E, DA9063_REG_CONTROL_F),
136 regmap_reg_range(DA9063_REG_BCORE2_CONT, DA9063_REG_LDO11_CONT),
137 regmap_reg_range(DA9063_REG_DVC_1, DA9063_REG_ADC_MAN),
138 regmap_reg_range(DA9063_REG_ADC_RES_L, DA9063_REG_MON_A10_RES),
139 regmap_reg_range(DA9063_REG_SEQ, DA9063_REG_SEQ),
140 regmap_reg_range(DA9063_REG_EN_32K, DA9063_REG_EN_32K),
141 regmap_reg_range(DA9063_BB_REG_MON_REG_5, DA9063_BB_REG_MON_REG_6),
142 };
143
144 static const struct regmap_access_table da9063l_bb_readable_table = {
145 .yes_ranges = da9063l_bb_readable_ranges,
146 .n_yes_ranges = ARRAY_SIZE(da9063l_bb_readable_ranges),
147 };
148
149 static const struct regmap_access_table da9063l_bb_writeable_table = {
150 .yes_ranges = da9063l_bb_writeable_ranges,
151 .n_yes_ranges = ARRAY_SIZE(da9063l_bb_writeable_ranges),
152 };
153
154 static const struct regmap_access_table da9063l_bb_volatile_table = {
155 .yes_ranges = da9063l_bb_volatile_ranges,
156 .n_yes_ranges = ARRAY_SIZE(da9063l_bb_volatile_ranges),
157 };
158
159 static const struct regmap_range_cfg da9063_range_cfg[] = {
160 {
161 .range_min = DA9063_REG_PAGE_CON,
162 .range_max = DA9063_REG_CHIP_VARIANT,
163 .selector_reg = DA9063_REG_PAGE_CON,
164 .selector_mask = 1 << DA9063_I2C_PAGE_SEL_SHIFT,
165 .selector_shift = DA9063_I2C_PAGE_SEL_SHIFT,
166 .window_start = 0,
167 .window_len = 256,
168 }
169 };
170
171 static struct regmap_config da9063_regmap_config = {
172 .reg_bits = 8,
173 .val_bits = 8,
174 .ranges = da9063_range_cfg,
175 .num_ranges = ARRAY_SIZE(da9063_range_cfg),
176 .max_register = DA9063_REG_CHIP_VARIANT,
177
178 .cache_type = REGCACHE_RBTREE,
179 };
180
181 static const struct of_device_id da9063_dt_ids[] = {
182 { .compatible = "dlg,da9063", },
183 { .compatible = "dlg,da9063l", },
184 { }
185 };
186 MODULE_DEVICE_TABLE(of, da9063_dt_ids);
da9063_i2c_probe(struct i2c_client * i2c,const struct i2c_device_id * id)187 static int da9063_i2c_probe(struct i2c_client *i2c,
188 const struct i2c_device_id *id)
189 {
190 struct da9063 *da9063;
191 int ret;
192
193 da9063 = devm_kzalloc(&i2c->dev, sizeof(struct da9063), GFP_KERNEL);
194 if (da9063 == NULL)
195 return -ENOMEM;
196
197 i2c_set_clientdata(i2c, da9063);
198 da9063->dev = &i2c->dev;
199 da9063->chip_irq = i2c->irq;
200 da9063->type = id->driver_data;
201
202 if (da9063->variant_code == PMIC_DA9063_AD) {
203 da9063_regmap_config.rd_table = &da9063_ad_readable_table;
204 da9063_regmap_config.wr_table = &da9063_ad_writeable_table;
205 da9063_regmap_config.volatile_table = &da9063_ad_volatile_table;
206 } else if (da9063->type == PMIC_TYPE_DA9063L) {
207 da9063_regmap_config.rd_table = &da9063l_bb_readable_table;
208 da9063_regmap_config.wr_table = &da9063l_bb_writeable_table;
209 da9063_regmap_config.volatile_table = &da9063l_bb_volatile_table;
210 } else {
211 da9063_regmap_config.rd_table = &da9063_bb_readable_table;
212 da9063_regmap_config.wr_table = &da9063_bb_writeable_table;
213 da9063_regmap_config.volatile_table = &da9063_bb_volatile_table;
214 }
215
216 da9063->regmap = devm_regmap_init_i2c(i2c, &da9063_regmap_config);
217 if (IS_ERR(da9063->regmap)) {
218 ret = PTR_ERR(da9063->regmap);
219 dev_err(da9063->dev, "Failed to allocate register map: %d\n",
220 ret);
221 return ret;
222 }
223
224 return da9063_device_init(da9063, i2c->irq);
225 }
226
227 static const struct i2c_device_id da9063_i2c_id[] = {
228 { "da9063", PMIC_TYPE_DA9063 },
229 { "da9063l", PMIC_TYPE_DA9063L },
230 {},
231 };
232 MODULE_DEVICE_TABLE(i2c, da9063_i2c_id);
233
234 static struct i2c_driver da9063_i2c_driver = {
235 .driver = {
236 .name = "da9063",
237 .of_match_table = of_match_ptr(da9063_dt_ids),
238 },
239 .probe = da9063_i2c_probe,
240 .id_table = da9063_i2c_id,
241 };
242
243 module_i2c_driver(da9063_i2c_driver);
244