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WIP FPC-III support
[linux/fpc-iii.git] / drivers / regulator / 88pm800-regulator.c
blobd08ee81ed1ac59fdd7bc80b24f086d81516331cf
1 // SPDX-License-Identifier: GPL-2.0-only
2 /*
3 * Regulators driver for Marvell 88PM800
4 *
5 * Copyright (C) 2012 Marvell International Ltd.
6 * Joseph(Yossi) Hanin <yhanin@marvell.com>
7 * Yi Zhang <yizhang@marvell.com>
8 */
9 #include <linux/module.h>
10 #include <linux/moduleparam.h>
11 #include <linux/init.h>
12 #include <linux/err.h>
13 #include <linux/regmap.h>
14 #include <linux/regulator/driver.h>
15 #include <linux/regulator/machine.h>
16 #include <linux/mfd/88pm80x.h>
17 #include <linux/delay.h>
18 #include <linux/io.h>
19 #include <linux/of.h>
20 #include <linux/regulator/of_regulator.h>
21
22 /* LDO1 with DVC[0..3] */
23 #define PM800_LDO1_VOUT (0x08) /* VOUT1 */
24 #define PM800_LDO1_VOUT_2 (0x09)
25 #define PM800_LDO1_VOUT_3 (0x0A)
26 #define PM800_LDO2_VOUT (0x0B)
27 #define PM800_LDO3_VOUT (0x0C)
28 #define PM800_LDO4_VOUT (0x0D)
29 #define PM800_LDO5_VOUT (0x0E)
30 #define PM800_LDO6_VOUT (0x0F)
31 #define PM800_LDO7_VOUT (0x10)
32 #define PM800_LDO8_VOUT (0x11)
33 #define PM800_LDO9_VOUT (0x12)
34 #define PM800_LDO10_VOUT (0x13)
35 #define PM800_LDO11_VOUT (0x14)
36 #define PM800_LDO12_VOUT (0x15)
37 #define PM800_LDO13_VOUT (0x16)
38 #define PM800_LDO14_VOUT (0x17)
39 #define PM800_LDO15_VOUT (0x18)
40 #define PM800_LDO16_VOUT (0x19)
41 #define PM800_LDO17_VOUT (0x1A)
42 #define PM800_LDO18_VOUT (0x1B)
43 #define PM800_LDO19_VOUT (0x1C)
44
45 /* BUCK1 with DVC[0..3] */
46 #define PM800_BUCK1 (0x3C)
47 #define PM800_BUCK1_1 (0x3D)
48 #define PM800_BUCK1_2 (0x3E)
49 #define PM800_BUCK1_3 (0x3F)
50 #define PM800_BUCK2 (0x40)
51 #define PM800_BUCK3 (0x41)
52 #define PM800_BUCK4 (0x42)
53 #define PM800_BUCK4_1 (0x43)
54 #define PM800_BUCK4_2 (0x44)
55 #define PM800_BUCK4_3 (0x45)
56 #define PM800_BUCK5 (0x46)
57
58 #define PM800_BUCK_ENA (0x50)
59 #define PM800_LDO_ENA1_1 (0x51)
60 #define PM800_LDO_ENA1_2 (0x52)
61 #define PM800_LDO_ENA1_3 (0x53)
62
63 #define PM800_LDO_ENA2_1 (0x56)
64 #define PM800_LDO_ENA2_2 (0x57)
65 #define PM800_LDO_ENA2_3 (0x58)
66
67 #define PM800_BUCK1_MISC1 (0x78)
68 #define PM800_BUCK3_MISC1 (0x7E)
69 #define PM800_BUCK4_MISC1 (0x81)
70 #define PM800_BUCK5_MISC1 (0x84)
71
72 struct pm800_regulator_info {
73 struct regulator_desc desc;
74 int max_ua;
75 };
76
77 /*
78 * vreg - the buck regs string.
79 * ereg - the string for the enable register.
80 * ebit - the bit number in the enable register.
81 * amax - the current
82 * Buck has 2 kinds of voltage steps. It is easy to find voltage by ranges,
83 * not the constant voltage table.
84 * n_volt - Number of available selectors
85 */
86 #define PM800_BUCK(match, vreg, ereg, ebit, amax, volt_ranges, n_volt) \
87 { \
88 .desc = { \
89 .name = #vreg, \
90 .of_match = of_match_ptr(#match), \
91 .regulators_node = of_match_ptr("regulators"), \
92 .ops = &pm800_volt_range_ops, \
93 .type = REGULATOR_VOLTAGE, \
94 .id = PM800_ID_##vreg, \
95 .owner = THIS_MODULE, \
96 .n_voltages = n_volt, \
97 .linear_ranges = volt_ranges, \
98 .n_linear_ranges = ARRAY_SIZE(volt_ranges), \
99 .vsel_reg = PM800_##vreg, \
100 .vsel_mask = 0x7f, \
101 .enable_reg = PM800_##ereg, \
102 .enable_mask = 1 << (ebit), \
103 }, \
104 .max_ua = (amax), \
105 }
106
107 /*
108 * vreg - the LDO regs string
109 * ereg - the string for the enable register.
110 * ebit - the bit number in the enable register.
111 * amax - the current
112 * volt_table - the LDO voltage table
113 * For all the LDOes, there are too many ranges. Using volt_table will be
114 * simpler and faster.
115 */
116 #define PM800_LDO(match, vreg, ereg, ebit, amax, ldo_volt_table) \
117 { \
118 .desc = { \
119 .name = #vreg, \
120 .of_match = of_match_ptr(#match), \
121 .regulators_node = of_match_ptr("regulators"), \
122 .ops = &pm800_volt_table_ops, \
123 .type = REGULATOR_VOLTAGE, \
124 .id = PM800_ID_##vreg, \
125 .owner = THIS_MODULE, \
126 .n_voltages = ARRAY_SIZE(ldo_volt_table), \
127 .vsel_reg = PM800_##vreg##_VOUT, \
128 .vsel_mask = 0xf, \
129 .enable_reg = PM800_##ereg, \
130 .enable_mask = 1 << (ebit), \
131 .volt_table = ldo_volt_table, \
132 }, \
133 .max_ua = (amax), \
134 }
135
136 /* Ranges are sorted in ascending order. */
137 static const struct linear_range buck1_volt_range[] = {
138 REGULATOR_LINEAR_RANGE(600000, 0, 0x4f, 12500),
139 REGULATOR_LINEAR_RANGE(1600000, 0x50, 0x54, 50000),
140 };
141
142 /* BUCK 2~5 have same ranges. */
143 static const struct linear_range buck2_5_volt_range[] = {
144 REGULATOR_LINEAR_RANGE(600000, 0, 0x4f, 12500),
145 REGULATOR_LINEAR_RANGE(1600000, 0x50, 0x72, 50000),
146 };
147
148 static const unsigned int ldo1_volt_table[] = {
149 600000, 650000, 700000, 750000, 800000, 850000, 900000, 950000,
150 1000000, 1050000, 1100000, 1150000, 1200000, 1300000, 1400000, 1500000,
151 };
152
153 static const unsigned int ldo2_volt_table[] = {
154 1700000, 1800000, 1900000, 2000000, 2100000, 2500000, 2700000, 2800000,
155 };
156
157 /* LDO 3~17 have same voltage table. */
158 static const unsigned int ldo3_17_volt_table[] = {
159 1200000, 1250000, 1700000, 1800000, 1850000, 1900000, 2500000, 2600000,
160 2700000, 2750000, 2800000, 2850000, 2900000, 3000000, 3100000, 3300000,
161 };
162
163 /* LDO 18~19 have same voltage table. */
164 static const unsigned int ldo18_19_volt_table[] = {
165 1700000, 1800000, 1900000, 2500000, 2800000, 2900000, 3100000, 3300000,
166 };
167
168 static int pm800_get_current_limit(struct regulator_dev *rdev)
169 {
170 struct pm800_regulator_info *info = rdev_get_drvdata(rdev);
171
172 return info->max_ua;
173 }
174
175 static const struct regulator_ops pm800_volt_range_ops = {
176 .list_voltage = regulator_list_voltage_linear_range,
177 .map_voltage = regulator_map_voltage_linear_range,
178 .set_voltage_sel = regulator_set_voltage_sel_regmap,
179 .get_voltage_sel = regulator_get_voltage_sel_regmap,
180 .enable = regulator_enable_regmap,
181 .disable = regulator_disable_regmap,
182 .is_enabled = regulator_is_enabled_regmap,
183 .get_current_limit = pm800_get_current_limit,
184 };
185
186 static const struct regulator_ops pm800_volt_table_ops = {
187 .list_voltage = regulator_list_voltage_table,
188 .map_voltage = regulator_map_voltage_iterate,
189 .set_voltage_sel = regulator_set_voltage_sel_regmap,
190 .get_voltage_sel = regulator_get_voltage_sel_regmap,
191 .enable = regulator_enable_regmap,
192 .disable = regulator_disable_regmap,
193 .is_enabled = regulator_is_enabled_regmap,
194 .get_current_limit = pm800_get_current_limit,
195 };
196
197 /* The array is indexed by id(PM800_ID_XXX) */
198 static struct pm800_regulator_info pm800_regulator_info[] = {
199 PM800_BUCK(buck1, BUCK1, BUCK_ENA, 0, 3000000, buck1_volt_range, 0x55),
200 PM800_BUCK(buck2, BUCK2, BUCK_ENA, 1, 1200000, buck2_5_volt_range, 0x73),
201 PM800_BUCK(buck3, BUCK3, BUCK_ENA, 2, 1200000, buck2_5_volt_range, 0x73),
202 PM800_BUCK(buck4, BUCK4, BUCK_ENA, 3, 1200000, buck2_5_volt_range, 0x73),
203 PM800_BUCK(buck5, BUCK5, BUCK_ENA, 4, 1200000, buck2_5_volt_range, 0x73),
204
205 PM800_LDO(ldo1, LDO1, LDO_ENA1_1, 0, 200000, ldo1_volt_table),
206 PM800_LDO(ldo2, LDO2, LDO_ENA1_1, 1, 10000, ldo2_volt_table),
207 PM800_LDO(ldo3, LDO3, LDO_ENA1_1, 2, 300000, ldo3_17_volt_table),
208 PM800_LDO(ldo4, LDO4, LDO_ENA1_1, 3, 300000, ldo3_17_volt_table),
209 PM800_LDO(ldo5, LDO5, LDO_ENA1_1, 4, 300000, ldo3_17_volt_table),
210 PM800_LDO(ldo6, LDO6, LDO_ENA1_1, 5, 300000, ldo3_17_volt_table),
211 PM800_LDO(ldo7, LDO7, LDO_ENA1_1, 6, 300000, ldo3_17_volt_table),
212 PM800_LDO(ldo8, LDO8, LDO_ENA1_1, 7, 300000, ldo3_17_volt_table),
213 PM800_LDO(ldo9, LDO9, LDO_ENA1_2, 0, 300000, ldo3_17_volt_table),
214 PM800_LDO(ldo10, LDO10, LDO_ENA1_2, 1, 300000, ldo3_17_volt_table),
215 PM800_LDO(ldo11, LDO11, LDO_ENA1_2, 2, 300000, ldo3_17_volt_table),
216 PM800_LDO(ldo12, LDO12, LDO_ENA1_2, 3, 300000, ldo3_17_volt_table),
217 PM800_LDO(ldo13, LDO13, LDO_ENA1_2, 4, 300000, ldo3_17_volt_table),
218 PM800_LDO(ldo14, LDO14, LDO_ENA1_2, 5, 300000, ldo3_17_volt_table),
219 PM800_LDO(ldo15, LDO15, LDO_ENA1_2, 6, 300000, ldo3_17_volt_table),
220 PM800_LDO(ldo16, LDO16, LDO_ENA1_2, 7, 300000, ldo3_17_volt_table),
221 PM800_LDO(ldo17, LDO17, LDO_ENA1_3, 0, 300000, ldo3_17_volt_table),
222 PM800_LDO(ldo18, LDO18, LDO_ENA1_3, 1, 200000, ldo18_19_volt_table),
223 PM800_LDO(ldo19, LDO19, LDO_ENA1_3, 2, 200000, ldo18_19_volt_table),
224 };
225
226 static int pm800_regulator_probe(struct platform_device *pdev)
227 {
228 struct pm80x_chip *chip = dev_get_drvdata(pdev->dev.parent);
229 struct pm80x_platform_data *pdata = dev_get_platdata(pdev->dev.parent);
230 struct regulator_config config = { };
231 struct regulator_init_data *init_data;
232 int i, ret;
233
234 if (pdata && pdata->num_regulators) {
235 unsigned int count = 0;
236
237 /* Check whether num_regulator is valid. */
238 for (i = 0; i < ARRAY_SIZE(pdata->regulators); i++) {
239 if (pdata->regulators[i])
240 count++;
241 }
242 if (count != pdata->num_regulators)
243 return -EINVAL;
244 }
245
246 config.dev = chip->dev;
247 config.regmap = chip->subchip->regmap_power;
248 for (i = 0; i < PM800_ID_RG_MAX; i++) {
249 struct regulator_dev *regulator;
250
251 if (pdata && pdata->num_regulators) {
252 init_data = pdata->regulators[i];
253 if (!init_data)
254 continue;
255
256 config.init_data = init_data;
257 }
258
259 config.driver_data = &pm800_regulator_info[i];
260
261 regulator = devm_regulator_register(&pdev->dev,
262 &pm800_regulator_info[i].desc, &config);
263 if (IS_ERR(regulator)) {
264 ret = PTR_ERR(regulator);
265 dev_err(&pdev->dev, "Failed to register %s\n",
266 pm800_regulator_info[i].desc.name);
267 return ret;
268 }
269 }
270
271 return 0;
272 }
273
274 static struct platform_driver pm800_regulator_driver = {
275 .driver = {
276 .name = "88pm80x-regulator",
277 },
278 .probe = pm800_regulator_probe,
279 };
280
281 module_platform_driver(pm800_regulator_driver);
282
283 MODULE_LICENSE("GPL");
284 MODULE_AUTHOR("Joseph(Yossi) Hanin <yhanin@marvell.com>");
285 MODULE_DESCRIPTION("Regulator Driver for Marvell 88PM800 PMIC");
286 MODULE_ALIAS("platform:88pm800-regulator");
Linux with added FPC-III support