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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 { | |
81 | struct regulator_dev *regulators[PM800_ID_RG_MAX]; | |
82 | struct pm80x_chip *chip; | |
83 | struct regmap *map; | |
84 | }; | |
85 | ||
86 | /* | |
87 | * vreg - the buck regs string. | |
88 | * ereg - the string for the enable register. | |
89 | * ebit - the bit number in the enable register. | |
90 | * amax - the current | |
91 | * Buck has 2 kinds of voltage steps. It is easy to find voltage by ranges, | |
92 | * not the constant voltage table. | |
6625d9d2 | 93 | * n_volt - Number of available selectors |
95f1dc08 | 94 | */ |
6625d9d2 | 95 | #define PM800_BUCK(vreg, ereg, ebit, amax, volt_ranges, n_volt) \ |
95f1dc08 CX |
96 | { \ |
97 | .desc = { \ | |
98 | .name = #vreg, \ | |
99 | .ops = &pm800_volt_range_ops, \ | |
100 | .type = REGULATOR_VOLTAGE, \ | |
101 | .id = PM800_ID_##vreg, \ | |
102 | .owner = THIS_MODULE, \ | |
6625d9d2 | 103 | .n_voltages = n_volt, \ |
95f1dc08 CX |
104 | .linear_ranges = volt_ranges, \ |
105 | .n_linear_ranges = ARRAY_SIZE(volt_ranges), \ | |
106 | .vsel_reg = PM800_##vreg, \ | |
107 | .vsel_mask = 0x7f, \ | |
108 | .enable_reg = PM800_##ereg, \ | |
109 | .enable_mask = 1 << (ebit), \ | |
110 | }, \ | |
111 | .max_ua = (amax), \ | |
112 | } | |
113 | ||
114 | /* | |
115 | * vreg - the LDO regs string | |
116 | * ereg - the string for the enable register. | |
117 | * ebit - the bit number in the enable register. | |
118 | * amax - the current | |
119 | * volt_table - the LDO voltage table | |
120 | * For all the LDOes, there are too many ranges. Using volt_table will be | |
121 | * simpler and faster. | |
122 | */ | |
123 | #define PM800_LDO(vreg, ereg, ebit, amax, ldo_volt_table) \ | |
124 | { \ | |
125 | .desc = { \ | |
126 | .name = #vreg, \ | |
127 | .ops = &pm800_volt_table_ops, \ | |
128 | .type = REGULATOR_VOLTAGE, \ | |
129 | .id = PM800_ID_##vreg, \ | |
130 | .owner = THIS_MODULE, \ | |
131 | .n_voltages = ARRAY_SIZE(ldo_volt_table), \ | |
132 | .vsel_reg = PM800_##vreg##_VOUT, \ | |
133 | .vsel_mask = 0x1f, \ | |
134 | .enable_reg = PM800_##ereg, \ | |
135 | .enable_mask = 1 << (ebit), \ | |
136 | .volt_table = ldo_volt_table, \ | |
137 | }, \ | |
138 | .max_ua = (amax), \ | |
139 | } | |
140 | ||
141 | /* Ranges are sorted in ascending order. */ | |
142 | static const struct regulator_linear_range buck1_volt_range[] = { | |
8828bae4 AL |
143 | REGULATOR_LINEAR_RANGE(600000, 0, 0x4f, 12500), |
144 | REGULATOR_LINEAR_RANGE(1600000, 0x50, 0x54, 50000), | |
95f1dc08 CX |
145 | }; |
146 | ||
147 | /* BUCK 2~5 have same ranges. */ | |
148 | static const struct regulator_linear_range buck2_5_volt_range[] = { | |
8828bae4 AL |
149 | REGULATOR_LINEAR_RANGE(600000, 0, 0x4f, 12500), |
150 | REGULATOR_LINEAR_RANGE(1600000, 0x50, 0x72, 50000), | |
95f1dc08 CX |
151 | }; |
152 | ||
153 | static const unsigned int ldo1_volt_table[] = { | |
154 | 600000, 650000, 700000, 750000, 800000, 850000, 900000, 950000, | |
155 | 1000000, 1050000, 1100000, 1150000, 1200000, 1300000, 1400000, 1500000, | |
156 | }; | |
157 | ||
158 | static const unsigned int ldo2_volt_table[] = { | |
159 | 1700000, 1800000, 1900000, 2000000, 2100000, 2500000, 2700000, 2800000, | |
160 | }; | |
161 | ||
162 | /* LDO 3~17 have same voltage table. */ | |
163 | static const unsigned int ldo3_17_volt_table[] = { | |
164 | 1200000, 1250000, 1700000, 1800000, 1850000, 1900000, 2500000, 2600000, | |
165 | 2700000, 2750000, 2800000, 2850000, 2900000, 3000000, 3100000, 3300000, | |
166 | }; | |
167 | ||
168 | /* LDO 18~19 have same voltage table. */ | |
169 | static const unsigned int ldo18_19_volt_table[] = { | |
170 | 1700000, 1800000, 1900000, 2500000, 2800000, 2900000, 3100000, 3300000, | |
171 | }; | |
172 | ||
173 | static int pm800_get_current_limit(struct regulator_dev *rdev) | |
174 | { | |
175 | struct pm800_regulator_info *info = rdev_get_drvdata(rdev); | |
176 | ||
177 | return info->max_ua; | |
178 | } | |
179 | ||
180 | static struct regulator_ops pm800_volt_range_ops = { | |
181 | .list_voltage = regulator_list_voltage_linear_range, | |
182 | .map_voltage = regulator_map_voltage_linear_range, | |
183 | .set_voltage_sel = regulator_set_voltage_sel_regmap, | |
184 | .get_voltage_sel = regulator_get_voltage_sel_regmap, | |
185 | .enable = regulator_enable_regmap, | |
186 | .disable = regulator_disable_regmap, | |
187 | .is_enabled = regulator_is_enabled_regmap, | |
188 | .get_current_limit = pm800_get_current_limit, | |
189 | }; | |
190 | ||
191 | static struct regulator_ops pm800_volt_table_ops = { | |
192 | .list_voltage = regulator_list_voltage_table, | |
193 | .map_voltage = regulator_map_voltage_iterate, | |
194 | .set_voltage_sel = regulator_set_voltage_sel_regmap, | |
195 | .get_voltage_sel = regulator_get_voltage_sel_regmap, | |
196 | .enable = regulator_enable_regmap, | |
197 | .disable = regulator_disable_regmap, | |
198 | .is_enabled = regulator_is_enabled_regmap, | |
199 | .get_current_limit = pm800_get_current_limit, | |
200 | }; | |
201 | ||
202 | /* The array is indexed by id(PM800_ID_XXX) */ | |
203 | static struct pm800_regulator_info pm800_regulator_info[] = { | |
6625d9d2 AL |
204 | PM800_BUCK(BUCK1, BUCK_ENA, 0, 3000000, buck1_volt_range, 0x55), |
205 | PM800_BUCK(BUCK2, BUCK_ENA, 1, 1200000, buck2_5_volt_range, 0x73), | |
206 | PM800_BUCK(BUCK3, BUCK_ENA, 2, 1200000, buck2_5_volt_range, 0x73), | |
207 | PM800_BUCK(BUCK4, BUCK_ENA, 3, 1200000, buck2_5_volt_range, 0x73), | |
208 | PM800_BUCK(BUCK5, BUCK_ENA, 4, 1200000, buck2_5_volt_range, 0x73), | |
95f1dc08 CX |
209 | |
210 | PM800_LDO(LDO1, LDO_ENA1_1, 0, 200000, ldo1_volt_table), | |
211 | PM800_LDO(LDO2, LDO_ENA1_1, 1, 10000, ldo2_volt_table), | |
212 | PM800_LDO(LDO3, LDO_ENA1_1, 2, 300000, ldo3_17_volt_table), | |
213 | PM800_LDO(LDO4, LDO_ENA1_1, 3, 300000, ldo3_17_volt_table), | |
214 | PM800_LDO(LDO5, LDO_ENA1_1, 4, 300000, ldo3_17_volt_table), | |
215 | PM800_LDO(LDO6, LDO_ENA1_1, 5, 300000, ldo3_17_volt_table), | |
216 | PM800_LDO(LDO7, LDO_ENA1_1, 6, 300000, ldo3_17_volt_table), | |
217 | PM800_LDO(LDO8, LDO_ENA1_1, 7, 300000, ldo3_17_volt_table), | |
218 | PM800_LDO(LDO9, LDO_ENA1_2, 0, 300000, ldo3_17_volt_table), | |
219 | PM800_LDO(LDO10, LDO_ENA1_2, 1, 300000, ldo3_17_volt_table), | |
220 | PM800_LDO(LDO11, LDO_ENA1_2, 2, 300000, ldo3_17_volt_table), | |
221 | PM800_LDO(LDO12, LDO_ENA1_2, 3, 300000, ldo3_17_volt_table), | |
222 | PM800_LDO(LDO13, LDO_ENA1_2, 4, 300000, ldo3_17_volt_table), | |
223 | PM800_LDO(LDO14, LDO_ENA1_2, 5, 300000, ldo3_17_volt_table), | |
224 | PM800_LDO(LDO15, LDO_ENA1_2, 6, 300000, ldo3_17_volt_table), | |
225 | PM800_LDO(LDO16, LDO_ENA1_2, 7, 300000, ldo3_17_volt_table), | |
226 | PM800_LDO(LDO17, LDO_ENA1_3, 0, 300000, ldo3_17_volt_table), | |
227 | PM800_LDO(LDO18, LDO_ENA1_3, 1, 200000, ldo18_19_volt_table), | |
228 | PM800_LDO(LDO19, LDO_ENA1_3, 2, 200000, ldo18_19_volt_table), | |
229 | }; | |
230 | ||
231 | #define PM800_REGULATOR_OF_MATCH(_name, _id) \ | |
232 | [PM800_ID_##_id] = { \ | |
233 | .name = #_name, \ | |
234 | .driver_data = &pm800_regulator_info[PM800_ID_##_id], \ | |
235 | } | |
236 | ||
237 | static struct of_regulator_match pm800_regulator_matches[] = { | |
238 | PM800_REGULATOR_OF_MATCH(buck1, BUCK1), | |
239 | PM800_REGULATOR_OF_MATCH(buck2, BUCK2), | |
240 | PM800_REGULATOR_OF_MATCH(buck3, BUCK3), | |
241 | PM800_REGULATOR_OF_MATCH(buck4, BUCK4), | |
242 | PM800_REGULATOR_OF_MATCH(buck5, BUCK5), | |
243 | PM800_REGULATOR_OF_MATCH(ldo1, LDO1), | |
244 | PM800_REGULATOR_OF_MATCH(ldo2, LDO2), | |
245 | PM800_REGULATOR_OF_MATCH(ldo3, LDO3), | |
246 | PM800_REGULATOR_OF_MATCH(ldo4, LDO4), | |
247 | PM800_REGULATOR_OF_MATCH(ldo5, LDO5), | |
248 | PM800_REGULATOR_OF_MATCH(ldo6, LDO6), | |
249 | PM800_REGULATOR_OF_MATCH(ldo7, LDO7), | |
250 | PM800_REGULATOR_OF_MATCH(ldo8, LDO8), | |
251 | PM800_REGULATOR_OF_MATCH(ldo9, LDO9), | |
252 | PM800_REGULATOR_OF_MATCH(ldo10, LDO10), | |
253 | PM800_REGULATOR_OF_MATCH(ldo11, LDO11), | |
254 | PM800_REGULATOR_OF_MATCH(ldo12, LDO12), | |
255 | PM800_REGULATOR_OF_MATCH(ldo13, LDO13), | |
256 | PM800_REGULATOR_OF_MATCH(ldo14, LDO14), | |
257 | PM800_REGULATOR_OF_MATCH(ldo15, LDO15), | |
258 | PM800_REGULATOR_OF_MATCH(ldo16, LDO16), | |
259 | PM800_REGULATOR_OF_MATCH(ldo17, LDO17), | |
260 | PM800_REGULATOR_OF_MATCH(ldo18, LDO18), | |
261 | PM800_REGULATOR_OF_MATCH(ldo19, LDO19), | |
262 | }; | |
263 | ||
264 | static int pm800_regulator_dt_init(struct platform_device *pdev) | |
265 | { | |
266 | struct device_node *np = pdev->dev.of_node; | |
267 | int ret; | |
268 | ||
269 | ret = of_regulator_match(&pdev->dev, np, | |
270 | pm800_regulator_matches, | |
271 | ARRAY_SIZE(pm800_regulator_matches)); | |
272 | if (ret < 0) | |
273 | return ret; | |
274 | ||
275 | return 0; | |
276 | } | |
277 | ||
278 | static int pm800_regulator_probe(struct platform_device *pdev) | |
279 | { | |
280 | struct pm80x_chip *chip = dev_get_drvdata(pdev->dev.parent); | |
dff91d0b | 281 | struct pm80x_platform_data *pdata = dev_get_platdata(pdev->dev.parent); |
95f1dc08 CX |
282 | struct pm800_regulators *pm800_data; |
283 | struct pm800_regulator_info *info; | |
284 | struct regulator_config config = { }; | |
285 | struct regulator_init_data *init_data; | |
286 | int i, ret; | |
287 | ||
288 | if (!pdata || pdata->num_regulators == 0) { | |
289 | if (IS_ENABLED(CONFIG_OF)) { | |
290 | ret = pm800_regulator_dt_init(pdev); | |
291 | if (ret) | |
292 | return ret; | |
293 | } else { | |
294 | return -ENODEV; | |
295 | } | |
296 | } else if (pdata->num_regulators) { | |
95f1dc08 | 297 | unsigned int count = 0; |
19c6b544 AL |
298 | |
299 | /* Check whether num_regulator is valid. */ | |
720c0273 | 300 | for (i = 0; i < ARRAY_SIZE(pdata->regulators); i++) { |
19c6b544 AL |
301 | if (pdata->regulators[i]) |
302 | count++; | |
303 | } | |
95f1dc08 CX |
304 | if (count != pdata->num_regulators) |
305 | return -EINVAL; | |
306 | } else { | |
307 | return -EINVAL; | |
308 | } | |
309 | ||
310 | pm800_data = devm_kzalloc(&pdev->dev, sizeof(*pm800_data), | |
311 | GFP_KERNEL); | |
001f004b | 312 | if (!pm800_data) |
95f1dc08 | 313 | return -ENOMEM; |
95f1dc08 CX |
314 | |
315 | pm800_data->map = chip->subchip->regmap_power; | |
316 | pm800_data->chip = chip; | |
317 | ||
318 | platform_set_drvdata(pdev, pm800_data); | |
319 | ||
320 | for (i = 0; i < PM800_ID_RG_MAX; i++) { | |
321 | if (!pdata || pdata->num_regulators == 0) | |
322 | init_data = pm800_regulator_matches[i].init_data; | |
323 | else | |
324 | init_data = pdata->regulators[i]; | |
325 | if (!init_data) | |
326 | continue; | |
327 | info = pm800_regulator_matches[i].driver_data; | |
328 | config.dev = &pdev->dev; | |
329 | config.init_data = init_data; | |
330 | config.driver_data = info; | |
331 | config.regmap = pm800_data->map; | |
e5e80f6d | 332 | config.of_node = pm800_regulator_matches[i].of_node; |
95f1dc08 CX |
333 | |
334 | pm800_data->regulators[i] = | |
335 | regulator_register(&info->desc, &config); | |
336 | if (IS_ERR(pm800_data->regulators[i])) { | |
337 | ret = PTR_ERR(pm800_data->regulators[i]); | |
338 | dev_err(&pdev->dev, "Failed to register %s\n", | |
339 | info->desc.name); | |
340 | ||
341 | while (--i >= 0) | |
342 | regulator_unregister(pm800_data->regulators[i]); | |
343 | ||
344 | return ret; | |
345 | } | |
346 | } | |
347 | ||
348 | return 0; | |
349 | } | |
350 | ||
351 | static int pm800_regulator_remove(struct platform_device *pdev) | |
352 | { | |
353 | struct pm800_regulators *pm800_data = platform_get_drvdata(pdev); | |
354 | int i; | |
355 | ||
356 | for (i = 0; i < PM800_ID_RG_MAX; i++) | |
357 | regulator_unregister(pm800_data->regulators[i]); | |
358 | ||
359 | return 0; | |
360 | } | |
361 | ||
362 | static struct platform_driver pm800_regulator_driver = { | |
363 | .driver = { | |
364 | .name = "88pm80x-regulator", | |
95f1dc08 CX |
365 | }, |
366 | .probe = pm800_regulator_probe, | |
367 | .remove = pm800_regulator_remove, | |
368 | }; | |
369 | ||
370 | module_platform_driver(pm800_regulator_driver); | |
371 | ||
372 | MODULE_LICENSE("GPL"); | |
373 | MODULE_AUTHOR("Joseph(Yossi) Hanin <yhanin@marvell.com>"); | |
374 | MODULE_DESCRIPTION("Regulator Driver for Marvell 88PM800 PMIC"); | |
375 | MODULE_ALIAS("platform:88pm800-regulator"); |