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95f1dc08 CX |
1 | /* |
2 | * Regulators driver for Marvell 88PM800 | |
3 | * | |
4 | * Copyright (C) 2012 Marvell International Ltd. | |
5 | * Joseph(Yossi) Hanin <yhanin@marvell.com> | |
6 | * Yi Zhang <yizhang@marvell.com> | |
7 | * | |
8 | * This program is free software; you can redistribute it and/or modify | |
9 | * it under the terms of the GNU General Public License version 2 as | |
10 | * published by the Free Software Foundation. | |
11 | */ | |
12 | #include <linux/module.h> | |
13 | #include <linux/moduleparam.h> | |
14 | #include <linux/init.h> | |
15 | #include <linux/err.h> | |
16 | #include <linux/regmap.h> | |
17 | #include <linux/regulator/driver.h> | |
18 | #include <linux/regulator/machine.h> | |
19 | #include <linux/mfd/88pm80x.h> | |
20 | #include <linux/delay.h> | |
21 | #include <linux/io.h> | |
22 | #include <linux/of.h> | |
23 | #include <linux/regulator/of_regulator.h> | |
24 | ||
25 | /* LDO1 with DVC[0..3] */ | |
26 | #define PM800_LDO1_VOUT (0x08) /* VOUT1 */ | |
27 | #define PM800_LDO1_VOUT_2 (0x09) | |
28 | #define PM800_LDO1_VOUT_3 (0x0A) | |
29 | #define PM800_LDO2_VOUT (0x0B) | |
30 | #define PM800_LDO3_VOUT (0x0C) | |
31 | #define PM800_LDO4_VOUT (0x0D) | |
32 | #define PM800_LDO5_VOUT (0x0E) | |
33 | #define PM800_LDO6_VOUT (0x0F) | |
34 | #define PM800_LDO7_VOUT (0x10) | |
35 | #define PM800_LDO8_VOUT (0x11) | |
36 | #define PM800_LDO9_VOUT (0x12) | |
37 | #define PM800_LDO10_VOUT (0x13) | |
38 | #define PM800_LDO11_VOUT (0x14) | |
39 | #define PM800_LDO12_VOUT (0x15) | |
40 | #define PM800_LDO13_VOUT (0x16) | |
41 | #define PM800_LDO14_VOUT (0x17) | |
42 | #define PM800_LDO15_VOUT (0x18) | |
43 | #define PM800_LDO16_VOUT (0x19) | |
44 | #define PM800_LDO17_VOUT (0x1A) | |
45 | #define PM800_LDO18_VOUT (0x1B) | |
46 | #define PM800_LDO19_VOUT (0x1C) | |
47 | ||
48 | /* BUCK1 with DVC[0..3] */ | |
49 | #define PM800_BUCK1 (0x3C) | |
50 | #define PM800_BUCK1_1 (0x3D) | |
51 | #define PM800_BUCK1_2 (0x3E) | |
52 | #define PM800_BUCK1_3 (0x3F) | |
53 | #define PM800_BUCK2 (0x40) | |
54 | #define PM800_BUCK3 (0x41) | |
95f1dc08 CX |
55 | #define PM800_BUCK4 (0x42) |
56 | #define PM800_BUCK4_1 (0x43) | |
57 | #define PM800_BUCK4_2 (0x44) | |
58 | #define PM800_BUCK4_3 (0x45) | |
59 | #define PM800_BUCK5 (0x46) | |
60 | ||
61 | #define PM800_BUCK_ENA (0x50) | |
62 | #define PM800_LDO_ENA1_1 (0x51) | |
63 | #define PM800_LDO_ENA1_2 (0x52) | |
64 | #define PM800_LDO_ENA1_3 (0x53) | |
65 | ||
66 | #define PM800_LDO_ENA2_1 (0x56) | |
67 | #define PM800_LDO_ENA2_2 (0x57) | |
68 | #define PM800_LDO_ENA2_3 (0x58) | |
69 | ||
70 | #define PM800_BUCK1_MISC1 (0x78) | |
71 | #define PM800_BUCK3_MISC1 (0x7E) | |
72 | #define PM800_BUCK4_MISC1 (0x81) | |
73 | #define PM800_BUCK5_MISC1 (0x84) | |
74 | ||
75 | struct pm800_regulator_info { | |
76 | struct regulator_desc desc; | |
77 | int max_ua; | |
78 | }; | |
79 | ||
80 | struct pm800_regulators { | |
95f1dc08 CX |
81 | struct pm80x_chip *chip; |
82 | struct regmap *map; | |
83 | }; | |
84 | ||
85 | /* | |
86 | * vreg - the buck regs string. | |
87 | * ereg - the string for the enable register. | |
88 | * ebit - the bit number in the enable register. | |
89 | * amax - the current | |
90 | * Buck has 2 kinds of voltage steps. It is easy to find voltage by ranges, | |
91 | * not the constant voltage table. | |
6625d9d2 | 92 | * n_volt - Number of available selectors |
95f1dc08 | 93 | */ |
fa26e4d2 | 94 | #define PM800_BUCK(match, vreg, ereg, ebit, amax, volt_ranges, n_volt) \ |
95f1dc08 CX |
95 | { \ |
96 | .desc = { \ | |
4d45c70b | 97 | .name = #vreg, \ |
fa26e4d2 VH |
98 | .of_match = of_match_ptr(#match), \ |
99 | .regulators_node = of_match_ptr("regulators"), \ | |
4d45c70b VH |
100 | .ops = &pm800_volt_range_ops, \ |
101 | .type = REGULATOR_VOLTAGE, \ | |
102 | .id = PM800_ID_##vreg, \ | |
103 | .owner = THIS_MODULE, \ | |
6625d9d2 | 104 | .n_voltages = n_volt, \ |
95f1dc08 CX |
105 | .linear_ranges = volt_ranges, \ |
106 | .n_linear_ranges = ARRAY_SIZE(volt_ranges), \ | |
107 | .vsel_reg = PM800_##vreg, \ | |
108 | .vsel_mask = 0x7f, \ | |
109 | .enable_reg = PM800_##ereg, \ | |
110 | .enable_mask = 1 << (ebit), \ | |
111 | }, \ | |
4d45c70b | 112 | .max_ua = (amax), \ |
95f1dc08 CX |
113 | } |
114 | ||
115 | /* | |
116 | * vreg - the LDO regs string | |
117 | * ereg - the string for the enable register. | |
118 | * ebit - the bit number in the enable register. | |
119 | * amax - the current | |
120 | * volt_table - the LDO voltage table | |
121 | * For all the LDOes, there are too many ranges. Using volt_table will be | |
122 | * simpler and faster. | |
123 | */ | |
fa26e4d2 | 124 | #define PM800_LDO(match, vreg, ereg, ebit, amax, ldo_volt_table) \ |
95f1dc08 CX |
125 | { \ |
126 | .desc = { \ | |
4d45c70b | 127 | .name = #vreg, \ |
fa26e4d2 VH |
128 | .of_match = of_match_ptr(#match), \ |
129 | .regulators_node = of_match_ptr("regulators"), \ | |
4d45c70b VH |
130 | .ops = &pm800_volt_table_ops, \ |
131 | .type = REGULATOR_VOLTAGE, \ | |
132 | .id = PM800_ID_##vreg, \ | |
133 | .owner = THIS_MODULE, \ | |
134 | .n_voltages = ARRAY_SIZE(ldo_volt_table), \ | |
135 | .vsel_reg = PM800_##vreg##_VOUT, \ | |
bf1fc23c | 136 | .vsel_mask = 0xf, \ |
4d45c70b VH |
137 | .enable_reg = PM800_##ereg, \ |
138 | .enable_mask = 1 << (ebit), \ | |
139 | .volt_table = ldo_volt_table, \ | |
95f1dc08 | 140 | }, \ |
4d45c70b | 141 | .max_ua = (amax), \ |
95f1dc08 CX |
142 | } |
143 | ||
144 | /* Ranges are sorted in ascending order. */ | |
145 | static const struct regulator_linear_range buck1_volt_range[] = { | |
8828bae4 AL |
146 | REGULATOR_LINEAR_RANGE(600000, 0, 0x4f, 12500), |
147 | REGULATOR_LINEAR_RANGE(1600000, 0x50, 0x54, 50000), | |
95f1dc08 CX |
148 | }; |
149 | ||
150 | /* BUCK 2~5 have same ranges. */ | |
151 | static const struct regulator_linear_range buck2_5_volt_range[] = { | |
8828bae4 AL |
152 | REGULATOR_LINEAR_RANGE(600000, 0, 0x4f, 12500), |
153 | REGULATOR_LINEAR_RANGE(1600000, 0x50, 0x72, 50000), | |
95f1dc08 CX |
154 | }; |
155 | ||
156 | static const unsigned int ldo1_volt_table[] = { | |
157 | 600000, 650000, 700000, 750000, 800000, 850000, 900000, 950000, | |
158 | 1000000, 1050000, 1100000, 1150000, 1200000, 1300000, 1400000, 1500000, | |
159 | }; | |
160 | ||
161 | static const unsigned int ldo2_volt_table[] = { | |
162 | 1700000, 1800000, 1900000, 2000000, 2100000, 2500000, 2700000, 2800000, | |
163 | }; | |
164 | ||
165 | /* LDO 3~17 have same voltage table. */ | |
166 | static const unsigned int ldo3_17_volt_table[] = { | |
167 | 1200000, 1250000, 1700000, 1800000, 1850000, 1900000, 2500000, 2600000, | |
168 | 2700000, 2750000, 2800000, 2850000, 2900000, 3000000, 3100000, 3300000, | |
169 | }; | |
170 | ||
171 | /* LDO 18~19 have same voltage table. */ | |
172 | static const unsigned int ldo18_19_volt_table[] = { | |
173 | 1700000, 1800000, 1900000, 2500000, 2800000, 2900000, 3100000, 3300000, | |
174 | }; | |
175 | ||
176 | static int pm800_get_current_limit(struct regulator_dev *rdev) | |
177 | { | |
178 | struct pm800_regulator_info *info = rdev_get_drvdata(rdev); | |
179 | ||
180 | return info->max_ua; | |
181 | } | |
182 | ||
183 | static struct regulator_ops pm800_volt_range_ops = { | |
4d45c70b VH |
184 | .list_voltage = regulator_list_voltage_linear_range, |
185 | .map_voltage = regulator_map_voltage_linear_range, | |
186 | .set_voltage_sel = regulator_set_voltage_sel_regmap, | |
187 | .get_voltage_sel = regulator_get_voltage_sel_regmap, | |
188 | .enable = regulator_enable_regmap, | |
189 | .disable = regulator_disable_regmap, | |
190 | .is_enabled = regulator_is_enabled_regmap, | |
191 | .get_current_limit = pm800_get_current_limit, | |
95f1dc08 CX |
192 | }; |
193 | ||
194 | static struct regulator_ops pm800_volt_table_ops = { | |
4d45c70b VH |
195 | .list_voltage = regulator_list_voltage_table, |
196 | .map_voltage = regulator_map_voltage_iterate, | |
197 | .set_voltage_sel = regulator_set_voltage_sel_regmap, | |
198 | .get_voltage_sel = regulator_get_voltage_sel_regmap, | |
199 | .enable = regulator_enable_regmap, | |
200 | .disable = regulator_disable_regmap, | |
201 | .is_enabled = regulator_is_enabled_regmap, | |
202 | .get_current_limit = pm800_get_current_limit, | |
95f1dc08 CX |
203 | }; |
204 | ||
205 | /* The array is indexed by id(PM800_ID_XXX) */ | |
206 | static struct pm800_regulator_info pm800_regulator_info[] = { | |
fa26e4d2 VH |
207 | PM800_BUCK(buck1, BUCK1, BUCK_ENA, 0, 3000000, buck1_volt_range, 0x55), |
208 | PM800_BUCK(buck2, BUCK2, BUCK_ENA, 1, 1200000, buck2_5_volt_range, 0x73), | |
209 | PM800_BUCK(buck3, BUCK3, BUCK_ENA, 2, 1200000, buck2_5_volt_range, 0x73), | |
210 | PM800_BUCK(buck4, BUCK4, BUCK_ENA, 3, 1200000, buck2_5_volt_range, 0x73), | |
211 | PM800_BUCK(buck5, BUCK5, BUCK_ENA, 4, 1200000, buck2_5_volt_range, 0x73), | |
212 | ||
213 | PM800_LDO(ldo1, LDO1, LDO_ENA1_1, 0, 200000, ldo1_volt_table), | |
214 | PM800_LDO(ldo2, LDO2, LDO_ENA1_1, 1, 10000, ldo2_volt_table), | |
215 | PM800_LDO(ldo3, LDO3, LDO_ENA1_1, 2, 300000, ldo3_17_volt_table), | |
216 | PM800_LDO(ldo4, LDO4, LDO_ENA1_1, 3, 300000, ldo3_17_volt_table), | |
217 | PM800_LDO(ldo5, LDO5, LDO_ENA1_1, 4, 300000, ldo3_17_volt_table), | |
218 | PM800_LDO(ldo6, LDO6, LDO_ENA1_1, 5, 300000, ldo3_17_volt_table), | |
219 | PM800_LDO(ldo7, LDO7, LDO_ENA1_1, 6, 300000, ldo3_17_volt_table), | |
220 | PM800_LDO(ldo8, LDO8, LDO_ENA1_1, 7, 300000, ldo3_17_volt_table), | |
221 | PM800_LDO(ldo9, LDO9, LDO_ENA1_2, 0, 300000, ldo3_17_volt_table), | |
222 | PM800_LDO(ldo10, LDO10, LDO_ENA1_2, 1, 300000, ldo3_17_volt_table), | |
223 | PM800_LDO(ldo11, LDO11, LDO_ENA1_2, 2, 300000, ldo3_17_volt_table), | |
224 | PM800_LDO(ldo12, LDO12, LDO_ENA1_2, 3, 300000, ldo3_17_volt_table), | |
225 | PM800_LDO(ldo13, LDO13, LDO_ENA1_2, 4, 300000, ldo3_17_volt_table), | |
226 | PM800_LDO(ldo14, LDO14, LDO_ENA1_2, 5, 300000, ldo3_17_volt_table), | |
227 | PM800_LDO(ldo15, LDO15, LDO_ENA1_2, 6, 300000, ldo3_17_volt_table), | |
228 | PM800_LDO(ldo16, LDO16, LDO_ENA1_2, 7, 300000, ldo3_17_volt_table), | |
229 | PM800_LDO(ldo17, LDO17, LDO_ENA1_3, 0, 300000, ldo3_17_volt_table), | |
230 | PM800_LDO(ldo18, LDO18, LDO_ENA1_3, 1, 200000, ldo18_19_volt_table), | |
231 | PM800_LDO(ldo19, LDO19, LDO_ENA1_3, 2, 200000, ldo18_19_volt_table), | |
95f1dc08 CX |
232 | }; |
233 | ||
95f1dc08 CX |
234 | static int pm800_regulator_probe(struct platform_device *pdev) |
235 | { | |
236 | struct pm80x_chip *chip = dev_get_drvdata(pdev->dev.parent); | |
dff91d0b | 237 | struct pm80x_platform_data *pdata = dev_get_platdata(pdev->dev.parent); |
95f1dc08 | 238 | struct pm800_regulators *pm800_data; |
95f1dc08 CX |
239 | struct regulator_config config = { }; |
240 | struct regulator_init_data *init_data; | |
241 | int i, ret; | |
242 | ||
fa26e4d2 | 243 | if (pdata && pdata->num_regulators) { |
95f1dc08 | 244 | unsigned int count = 0; |
19c6b544 AL |
245 | |
246 | /* Check whether num_regulator is valid. */ | |
720c0273 | 247 | for (i = 0; i < ARRAY_SIZE(pdata->regulators); i++) { |
19c6b544 AL |
248 | if (pdata->regulators[i]) |
249 | count++; | |
250 | } | |
95f1dc08 CX |
251 | if (count != pdata->num_regulators) |
252 | return -EINVAL; | |
95f1dc08 CX |
253 | } |
254 | ||
255 | pm800_data = devm_kzalloc(&pdev->dev, sizeof(*pm800_data), | |
256 | GFP_KERNEL); | |
001f004b | 257 | if (!pm800_data) |
95f1dc08 | 258 | return -ENOMEM; |
95f1dc08 CX |
259 | |
260 | pm800_data->map = chip->subchip->regmap_power; | |
261 | pm800_data->chip = chip; | |
262 | ||
263 | platform_set_drvdata(pdev, pm800_data); | |
264 | ||
fa26e4d2 VH |
265 | config.dev = chip->dev; |
266 | config.regmap = pm800_data->map; | |
95f1dc08 | 267 | for (i = 0; i < PM800_ID_RG_MAX; i++) { |
a07d94a5 VH |
268 | struct regulator_dev *regulator; |
269 | ||
fa26e4d2 | 270 | if (pdata && pdata->num_regulators) { |
95f1dc08 | 271 | init_data = pdata->regulators[i]; |
fa26e4d2 VH |
272 | if (!init_data) |
273 | continue; | |
274 | ||
275 | config.init_data = init_data; | |
276 | } | |
277 | ||
278 | config.driver_data = &pm800_regulator_info[i]; | |
95f1dc08 | 279 | |
a07d94a5 | 280 | regulator = devm_regulator_register(&pdev->dev, |
fa26e4d2 | 281 | &pm800_regulator_info[i].desc, &config); |
a07d94a5 VH |
282 | if (IS_ERR(regulator)) { |
283 | ret = PTR_ERR(regulator); | |
95f1dc08 | 284 | dev_err(&pdev->dev, "Failed to register %s\n", |
fa26e4d2 | 285 | pm800_regulator_info[i].desc.name); |
95f1dc08 CX |
286 | return ret; |
287 | } | |
288 | } | |
289 | ||
290 | return 0; | |
291 | } | |
292 | ||
95f1dc08 CX |
293 | static struct platform_driver pm800_regulator_driver = { |
294 | .driver = { | |
295 | .name = "88pm80x-regulator", | |
95f1dc08 CX |
296 | }, |
297 | .probe = pm800_regulator_probe, | |
95f1dc08 CX |
298 | }; |
299 | ||
300 | module_platform_driver(pm800_regulator_driver); | |
301 | ||
302 | MODULE_LICENSE("GPL"); | |
303 | MODULE_AUTHOR("Joseph(Yossi) Hanin <yhanin@marvell.com>"); | |
304 | MODULE_DESCRIPTION("Regulator Driver for Marvell 88PM800 PMIC"); | |
305 | MODULE_ALIAS("platform:88pm800-regulator"); |