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1// SPDX-License-Identifier: GPL-2.0-or-later
2/*
3 * isl9305 - Intersil ISL9305 DCDC regulator
4 *
5 * Copyright 2014 Linaro Ltd
6 *
7 * Author: Mark Brown <broonie@kernel.org>
8 */
9
10#include <linux/module.h>
11#include <linux/err.h>
12#include <linux/i2c.h>
13#include <linux/of.h>
14#include <linux/platform_data/isl9305.h>
15#include <linux/regmap.h>
16#include <linux/regulator/driver.h>
17#include <linux/regulator/of_regulator.h>
18#include <linux/slab.h>
19
20/*
21 * Registers
22 */
23#define ISL9305_DCD1OUT 0x0
24#define ISL9305_DCD2OUT 0x1
25#define ISL9305_LDO1OUT 0x2
26#define ISL9305_LDO2OUT 0x3
27#define ISL9305_DCD_PARAMETER 0x4
28#define ISL9305_SYSTEM_PARAMETER 0x5
29#define ISL9305_DCD_SRCTL 0x6
30
31#define ISL9305_MAX_REG ISL9305_DCD_SRCTL
32
33/*
34 * DCD_PARAMETER
35 */
36#define ISL9305_DCD_PHASE 0x40
37#define ISL9305_DCD2_ULTRA 0x20
38#define ISL9305_DCD1_ULTRA 0x10
39#define ISL9305_DCD2_BLD 0x08
40#define ISL9305_DCD1_BLD 0x04
41#define ISL9305_DCD2_MODE 0x02
42#define ISL9305_DCD1_MODE 0x01
43
44/*
45 * SYSTEM_PARAMETER
46 */
47#define ISL9305_I2C_EN 0x40
48#define ISL9305_DCDPOR_MASK 0x30
49#define ISL9305_LDO2_EN 0x08
50#define ISL9305_LDO1_EN 0x04
51#define ISL9305_DCD2_EN 0x02
52#define ISL9305_DCD1_EN 0x01
53
54/*
55 * DCD_SRCTL
56 */
57#define ISL9305_DCD2SR_MASK 0xc0
58#define ISL9305_DCD1SR_MASK 0x07
59
60static const struct regulator_ops isl9305_ops = {
61 .enable = regulator_enable_regmap,
62 .disable = regulator_disable_regmap,
63 .is_enabled = regulator_is_enabled_regmap,
64 .list_voltage = regulator_list_voltage_linear,
65 .get_voltage_sel = regulator_get_voltage_sel_regmap,
66 .set_voltage_sel = regulator_set_voltage_sel_regmap,
67};
68
69static const struct regulator_desc isl9305_regulators[] = {
70 [ISL9305_DCD1] = {
71 .name = "DCD1",
72 .of_match = of_match_ptr("dcd1"),
73 .regulators_node = of_match_ptr("regulators"),
74 .n_voltages = 0x70,
75 .min_uV = 825000,
76 .uV_step = 25000,
77 .vsel_reg = ISL9305_DCD1OUT,
78 .vsel_mask = 0x7f,
79 .enable_reg = ISL9305_SYSTEM_PARAMETER,
80 .enable_mask = ISL9305_DCD1_EN,
81 .supply_name = "VINDCD1",
82 .ops = &isl9305_ops,
83 .owner = THIS_MODULE,
84 },
85 [ISL9305_DCD2] = {
86 .name = "DCD2",
87 .of_match = of_match_ptr("dcd2"),
88 .regulators_node = of_match_ptr("regulators"),
89 .n_voltages = 0x70,
90 .min_uV = 825000,
91 .uV_step = 25000,
92 .vsel_reg = ISL9305_DCD2OUT,
93 .vsel_mask = 0x7f,
94 .enable_reg = ISL9305_SYSTEM_PARAMETER,
95 .enable_mask = ISL9305_DCD2_EN,
96 .supply_name = "VINDCD2",
97 .ops = &isl9305_ops,
98 .owner = THIS_MODULE,
99 },
100 [ISL9305_LDO1] = {
101 .name = "LDO1",
102 .of_match = of_match_ptr("ldo1"),
103 .regulators_node = of_match_ptr("regulators"),
104 .n_voltages = 0x37,
105 .min_uV = 900000,
106 .uV_step = 50000,
107 .vsel_reg = ISL9305_LDO1OUT,
108 .vsel_mask = 0x3f,
109 .enable_reg = ISL9305_SYSTEM_PARAMETER,
110 .enable_mask = ISL9305_LDO1_EN,
111 .supply_name = "VINLDO1",
112 .ops = &isl9305_ops,
113 .owner = THIS_MODULE,
114 },
115 [ISL9305_LDO2] = {
116 .name = "LDO2",
117 .of_match = of_match_ptr("ldo2"),
118 .regulators_node = of_match_ptr("regulators"),
119 .n_voltages = 0x37,
120 .min_uV = 900000,
121 .uV_step = 50000,
122 .vsel_reg = ISL9305_LDO2OUT,
123 .vsel_mask = 0x3f,
124 .enable_reg = ISL9305_SYSTEM_PARAMETER,
125 .enable_mask = ISL9305_LDO2_EN,
126 .supply_name = "VINLDO2",
127 .ops = &isl9305_ops,
128 .owner = THIS_MODULE,
129 },
130};
131
132static const struct regmap_config isl9305_regmap = {
133 .reg_bits = 8,
134 .val_bits = 8,
135
136 .max_register = ISL9305_MAX_REG,
137 .cache_type = REGCACHE_MAPLE,
138};
139
140static int isl9305_i2c_probe(struct i2c_client *i2c)
141{
142 struct regulator_config config = { };
143 struct isl9305_pdata *pdata = i2c->dev.platform_data;
144 struct regulator_dev *rdev;
145 struct regmap *regmap;
146 int i, ret;
147
148 regmap = devm_regmap_init_i2c(i2c, &isl9305_regmap);
149 if (IS_ERR(regmap)) {
150 ret = PTR_ERR(regmap);
151 dev_err(&i2c->dev, "Failed to create regmap: %d\n", ret);
152 return ret;
153 }
154
155 config.dev = &i2c->dev;
156
157 for (i = 0; i < ARRAY_SIZE(isl9305_regulators); i++) {
158 if (pdata)
159 config.init_data = pdata->init_data[i];
160 else
161 config.init_data = NULL;
162
163 rdev = devm_regulator_register(&i2c->dev,
164 &isl9305_regulators[i],
165 &config);
166 if (IS_ERR(rdev)) {
167 ret = PTR_ERR(rdev);
168 dev_err(&i2c->dev, "Failed to register %s: %d\n",
169 isl9305_regulators[i].name, ret);
170 return ret;
171 }
172 }
173
174 return 0;
175}
176
177#ifdef CONFIG_OF
178static const struct of_device_id isl9305_dt_ids[] = {
179 { .compatible = "isl,isl9305" }, /* for backward compat., don't use */
180 { .compatible = "isil,isl9305" },
181 { .compatible = "isl,isl9305h" }, /* for backward compat., don't use */
182 { .compatible = "isil,isl9305h" },
183 {},
184};
185MODULE_DEVICE_TABLE(of, isl9305_dt_ids);
186#endif
187
188static const struct i2c_device_id isl9305_i2c_id[] = {
189 { "isl9305", },
190 { "isl9305h", },
191 { }
192};
193MODULE_DEVICE_TABLE(i2c, isl9305_i2c_id);
194
195static struct i2c_driver isl9305_regulator_driver = {
196 .driver = {
197 .name = "isl9305",
198 .probe_type = PROBE_PREFER_ASYNCHRONOUS,
199 .of_match_table = of_match_ptr(isl9305_dt_ids),
200 },
201 .probe = isl9305_i2c_probe,
202 .id_table = isl9305_i2c_id,
203};
204
205module_i2c_driver(isl9305_regulator_driver);
206
207MODULE_AUTHOR("Mark Brown");
208MODULE_DESCRIPTION("Intersil ISL9305 DCDC regulator");
209MODULE_LICENSE("GPL");
1/*
2 * isl9305 - Intersil ISL9305 DCDC regulator
3 *
4 * Copyright 2014 Linaro Ltd
5 *
6 * Author: Mark Brown <broonie@kernel.org>
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#include <linux/module.h>
15#include <linux/err.h>
16#include <linux/i2c.h>
17#include <linux/of.h>
18#include <linux/platform_data/isl9305.h>
19#include <linux/regmap.h>
20#include <linux/regulator/driver.h>
21#include <linux/regulator/of_regulator.h>
22#include <linux/slab.h>
23
24/*
25 * Registers
26 */
27#define ISL9305_DCD1OUT 0x0
28#define ISL9305_DCD2OUT 0x1
29#define ISL9305_LDO1OUT 0x2
30#define ISL9305_LDO2OUT 0x3
31#define ISL9305_DCD_PARAMETER 0x4
32#define ISL9305_SYSTEM_PARAMETER 0x5
33#define ISL9305_DCD_SRCTL 0x6
34
35#define ISL9305_MAX_REG ISL9305_DCD_SRCTL
36
37/*
38 * DCD_PARAMETER
39 */
40#define ISL9305_DCD_PHASE 0x40
41#define ISL9305_DCD2_ULTRA 0x20
42#define ISL9305_DCD1_ULTRA 0x10
43#define ISL9305_DCD2_BLD 0x08
44#define ISL9305_DCD1_BLD 0x04
45#define ISL9305_DCD2_MODE 0x02
46#define ISL9305_DCD1_MODE 0x01
47
48/*
49 * SYSTEM_PARAMETER
50 */
51#define ISL9305_I2C_EN 0x40
52#define ISL9305_DCDPOR_MASK 0x30
53#define ISL9305_LDO2_EN 0x08
54#define ISL9305_LDO1_EN 0x04
55#define ISL9305_DCD2_EN 0x02
56#define ISL9305_DCD1_EN 0x01
57
58/*
59 * DCD_SRCTL
60 */
61#define ISL9305_DCD2SR_MASK 0xc0
62#define ISL9305_DCD1SR_MASK 0x07
63
64static const struct regulator_ops isl9305_ops = {
65 .enable = regulator_enable_regmap,
66 .disable = regulator_disable_regmap,
67 .is_enabled = regulator_is_enabled_regmap,
68 .list_voltage = regulator_list_voltage_linear,
69 .get_voltage_sel = regulator_get_voltage_sel_regmap,
70 .set_voltage_sel = regulator_set_voltage_sel_regmap,
71};
72
73static const struct regulator_desc isl9305_regulators[] = {
74 [ISL9305_DCD1] = {
75 .name = "DCD1",
76 .of_match = of_match_ptr("dcd1"),
77 .regulators_node = of_match_ptr("regulators"),
78 .n_voltages = 0x70,
79 .min_uV = 825000,
80 .uV_step = 25000,
81 .vsel_reg = ISL9305_DCD1OUT,
82 .vsel_mask = 0x7f,
83 .enable_reg = ISL9305_SYSTEM_PARAMETER,
84 .enable_mask = ISL9305_DCD1_EN,
85 .supply_name = "VINDCD1",
86 .ops = &isl9305_ops,
87 },
88 [ISL9305_DCD2] = {
89 .name = "DCD2",
90 .of_match = of_match_ptr("dcd2"),
91 .regulators_node = of_match_ptr("regulators"),
92 .n_voltages = 0x70,
93 .min_uV = 825000,
94 .uV_step = 25000,
95 .vsel_reg = ISL9305_DCD2OUT,
96 .vsel_mask = 0x7f,
97 .enable_reg = ISL9305_SYSTEM_PARAMETER,
98 .enable_mask = ISL9305_DCD2_EN,
99 .supply_name = "VINDCD2",
100 .ops = &isl9305_ops,
101 },
102 [ISL9305_LDO1] = {
103 .name = "LDO1",
104 .of_match = of_match_ptr("ldo1"),
105 .regulators_node = of_match_ptr("regulators"),
106 .n_voltages = 0x37,
107 .min_uV = 900000,
108 .uV_step = 50000,
109 .vsel_reg = ISL9305_LDO1OUT,
110 .vsel_mask = 0x3f,
111 .enable_reg = ISL9305_SYSTEM_PARAMETER,
112 .enable_mask = ISL9305_LDO1_EN,
113 .supply_name = "VINLDO1",
114 .ops = &isl9305_ops,
115 },
116 [ISL9305_LDO2] = {
117 .name = "LDO2",
118 .of_match = of_match_ptr("ldo2"),
119 .regulators_node = of_match_ptr("regulators"),
120 .n_voltages = 0x37,
121 .min_uV = 900000,
122 .uV_step = 50000,
123 .vsel_reg = ISL9305_LDO2OUT,
124 .vsel_mask = 0x3f,
125 .enable_reg = ISL9305_SYSTEM_PARAMETER,
126 .enable_mask = ISL9305_LDO2_EN,
127 .supply_name = "VINLDO2",
128 .ops = &isl9305_ops,
129 },
130};
131
132static const struct regmap_config isl9305_regmap = {
133 .reg_bits = 8,
134 .val_bits = 8,
135
136 .max_register = ISL9305_MAX_REG,
137 .cache_type = REGCACHE_RBTREE,
138};
139
140static int isl9305_i2c_probe(struct i2c_client *i2c,
141 const struct i2c_device_id *id)
142{
143 struct regulator_config config = { };
144 struct isl9305_pdata *pdata = i2c->dev.platform_data;
145 struct regulator_dev *rdev;
146 struct regmap *regmap;
147 int i, ret;
148
149 regmap = devm_regmap_init_i2c(i2c, &isl9305_regmap);
150 if (IS_ERR(regmap)) {
151 ret = PTR_ERR(regmap);
152 dev_err(&i2c->dev, "Failed to create regmap: %d\n", ret);
153 return ret;
154 }
155
156 config.dev = &i2c->dev;
157
158 for (i = 0; i < ARRAY_SIZE(isl9305_regulators); i++) {
159 if (pdata)
160 config.init_data = pdata->init_data[i];
161 else
162 config.init_data = NULL;
163
164 rdev = devm_regulator_register(&i2c->dev,
165 &isl9305_regulators[i],
166 &config);
167 if (IS_ERR(rdev)) {
168 ret = PTR_ERR(rdev);
169 dev_err(&i2c->dev, "Failed to register %s: %d\n",
170 isl9305_regulators[i].name, ret);
171 return ret;
172 }
173 }
174
175 return 0;
176}
177
178#ifdef CONFIG_OF
179static const struct of_device_id isl9305_dt_ids[] = {
180 { .compatible = "isl,isl9305" }, /* for backward compat., don't use */
181 { .compatible = "isil,isl9305" },
182 { .compatible = "isl,isl9305h" }, /* for backward compat., don't use */
183 { .compatible = "isil,isl9305h" },
184 {},
185};
186MODULE_DEVICE_TABLE(of, isl9305_dt_ids);
187#endif
188
189static const struct i2c_device_id isl9305_i2c_id[] = {
190 { "isl9305", },
191 { "isl9305h", },
192 { }
193};
194MODULE_DEVICE_TABLE(i2c, isl9305_i2c_id);
195
196static struct i2c_driver isl9305_regulator_driver = {
197 .driver = {
198 .name = "isl9305",
199 .of_match_table = of_match_ptr(isl9305_dt_ids),
200 },
201 .probe = isl9305_i2c_probe,
202 .id_table = isl9305_i2c_id,
203};
204
205module_i2c_driver(isl9305_regulator_driver);
206
207MODULE_AUTHOR("Mark Brown");
208MODULE_DESCRIPTION("Intersil ISL9305 DCDC regulator");
209MODULE_LICENSE("GPL");