xref: /openbmc/linux/drivers/regulator/88pm8607.c (revision 74ba9207)
1 /*
2  * Regulators driver for Marvell 88PM8607
3  *
4  * Copyright (C) 2009 Marvell International Ltd.
5  *	Haojian Zhuang <haojian.zhuang@marvell.com>
6  *
7  * This program is free software; you can redistribute it and/or modify
8  * it under the terms of the GNU General Public License version 2 as
9  * published by the Free Software Foundation.
10  */
11 #include <linux/kernel.h>
12 #include <linux/init.h>
13 #include <linux/err.h>
14 #include <linux/of.h>
15 #include <linux/regulator/of_regulator.h>
16 #include <linux/platform_device.h>
17 #include <linux/regulator/driver.h>
18 #include <linux/regulator/machine.h>
19 #include <linux/mfd/88pm860x.h>
20 #include <linux/module.h>
21 
22 struct pm8607_regulator_info {
23 	struct regulator_desc	desc;
24 
25 	unsigned int	*vol_suspend;
26 
27 	int	slope_double;
28 };
29 
30 static const unsigned int BUCK1_table[] = {
31 	 725000,  750000,  775000,  800000,  825000,  850000,  875000,  900000,
32 	 925000,  950000,  975000, 1000000, 1025000, 1050000, 1075000, 1100000,
33 	1125000, 1150000, 1175000, 1200000, 1225000, 1250000, 1275000, 1300000,
34 	1325000, 1350000, 1375000, 1400000, 1425000, 1450000, 1475000, 1500000,
35 	      0,   25000,   50000,   75000,  100000,  125000,  150000,  175000,
36 	 200000,  225000,  250000,  275000,  300000,  325000,  350000,  375000,
37 	 400000,  425000,  450000,  475000,  500000,  525000,  550000,  575000,
38 	 600000,  625000,  650000,  675000,  700000,  725000,  750000,  775000,
39 };
40 
41 static const unsigned int BUCK1_suspend_table[] = {
42 	      0,   25000,   50000,   75000,  100000,  125000,  150000,  175000,
43 	 200000,  225000,  250000,  275000,  300000,  325000,  350000,  375000,
44 	 400000,  425000,  450000,  475000,  500000,  525000,  550000,  575000,
45 	 600000,  625000,  650000,  675000,  700000,  725000,  750000,  775000,
46 	 800000,  825000,  850000,  875000,  900000,  925000,  950000,  975000,
47 	1000000, 1025000, 1050000, 1075000, 1100000, 1125000, 1150000, 1175000,
48 	1200000, 1225000, 1250000, 1275000, 1300000, 1325000, 1350000, 1375000,
49 	1400000, 1425000, 1450000, 1475000, 1500000, 1500000, 1500000, 1500000,
50 };
51 
52 static const unsigned int BUCK2_table[] = {
53 	      0,   50000,  100000,  150000,  200000,  250000,  300000,  350000,
54 	 400000,  450000,  500000,  550000,  600000,  650000,  700000,  750000,
55 	 800000,  850000,  900000,  950000, 1000000, 1050000, 1100000, 1150000,
56 	1200000, 1250000, 1300000, 1350000, 1400000, 1450000, 1500000, 1550000,
57 	1600000, 1650000, 1700000, 1750000, 1800000, 1850000, 1900000, 1950000,
58 	2000000, 2050000, 2100000, 2150000, 2200000, 2250000, 2300000, 2350000,
59 	2400000, 2450000, 2500000, 2550000, 2600000, 2650000, 2700000, 2750000,
60 	2800000, 2850000, 2900000, 2950000, 3000000, 3000000, 3000000, 3000000,
61 };
62 
63 static const unsigned int BUCK2_suspend_table[] = {
64 	      0,   50000,  100000,  150000,  200000,  250000,  300000,  350000,
65 	 400000,  450000,  500000,  550000,  600000,  650000,  700000,  750000,
66 	 800000,  850000,  900000,  950000, 1000000, 1050000, 1100000, 1150000,
67 	1200000, 1250000, 1300000, 1350000, 1400000, 1450000, 1500000, 1550000,
68 	1600000, 1650000, 1700000, 1750000, 1800000, 1850000, 1900000, 1950000,
69 	2000000, 2050000, 2100000, 2150000, 2200000, 2250000, 2300000, 2350000,
70 	2400000, 2450000, 2500000, 2550000, 2600000, 2650000, 2700000, 2750000,
71 	2800000, 2850000, 2900000, 2950000, 3000000, 3000000, 3000000, 3000000,
72 };
73 
74 static const unsigned int BUCK3_table[] = {
75 	      0,   25000,   50000,   75000,  100000,  125000,  150000,  175000,
76 	 200000,  225000,  250000,  275000,  300000,  325000,  350000,  375000,
77 	 400000,  425000,  450000,  475000,  500000,  525000,  550000,  575000,
78 	 600000,  625000,  650000,  675000,  700000,  725000,  750000,  775000,
79 	 800000,  825000,  850000,  875000,  900000,  925000,  950000,  975000,
80 	1000000, 1025000, 1050000, 1075000, 1100000, 1125000, 1150000, 1175000,
81 	1200000, 1225000, 1250000, 1275000, 1300000, 1325000, 1350000, 1375000,
82 	1400000, 1425000, 1450000, 1475000, 1500000, 1500000, 1500000, 1500000,
83 };
84 
85 static const unsigned int BUCK3_suspend_table[] = {
86 	      0,   25000,   50000,   75000,  100000,  125000,  150000,  175000,
87 	 200000,  225000,  250000,  275000,  300000,  325000,  350000,  375000,
88 	 400000,  425000,  450000,  475000,  500000,  525000,  550000,  575000,
89 	 600000,  625000,  650000,  675000,  700000,  725000,  750000,  775000,
90 	 800000,  825000,  850000,  875000,  900000,  925000,  950000,  975000,
91 	1000000, 1025000, 1050000, 1075000, 1100000, 1125000, 1150000, 1175000,
92 	1200000, 1225000, 1250000, 1275000, 1300000, 1325000, 1350000, 1375000,
93 	1400000, 1425000, 1450000, 1475000, 1500000, 1500000, 1500000, 1500000,
94 };
95 
96 static const unsigned int LDO1_table[] = {
97 	1800000, 1200000, 2800000, 0,
98 };
99 
100 static const unsigned int LDO1_suspend_table[] = {
101 	1800000, 1200000, 0, 0,
102 };
103 
104 static const unsigned int LDO2_table[] = {
105 	1800000, 1850000, 1900000, 2700000, 2750000, 2800000, 2850000, 3300000,
106 };
107 
108 static const unsigned int LDO2_suspend_table[] = {
109 	1800000, 1850000, 1900000, 2700000, 2750000, 2800000, 2850000, 2900000,
110 };
111 
112 static const unsigned int LDO3_table[] = {
113 	1800000, 1850000, 1900000, 2700000, 2750000, 2800000, 2850000, 3300000,
114 };
115 
116 static const unsigned int LDO3_suspend_table[] = {
117 	1800000, 1850000, 1900000, 2700000, 2750000, 2800000, 2850000, 2900000,
118 };
119 
120 static const unsigned int LDO4_table[] = {
121 	1800000, 1850000, 1900000, 2700000, 2750000, 2800000, 2900000, 3300000,
122 };
123 
124 static const unsigned int LDO4_suspend_table[] = {
125 	1800000, 1850000, 1900000, 2700000, 2750000, 2800000, 2900000, 2900000,
126 };
127 
128 static const unsigned int LDO5_table[] = {
129 	2900000, 3000000, 3100000, 3300000,
130 };
131 
132 static const unsigned int LDO5_suspend_table[] = {
133 	2900000, 0, 0, 0,
134 };
135 
136 static const unsigned int LDO6_table[] = {
137 	1800000, 1850000, 2600000, 2650000, 2700000, 2750000, 2800000, 3300000,
138 };
139 
140 static const unsigned int LDO6_suspend_table[] = {
141 	1800000, 1850000, 2600000, 2650000, 2700000, 2750000, 2800000, 2900000,
142 };
143 
144 static const unsigned int LDO7_table[] = {
145 	1800000, 1850000, 1900000, 2700000, 2750000, 2800000, 2850000, 2900000,
146 };
147 
148 static const unsigned int LDO7_suspend_table[] = {
149 	1800000, 1850000, 1900000, 2700000, 2750000, 2800000, 2850000, 2900000,
150 };
151 
152 static const unsigned int LDO8_table[] = {
153 	1800000, 1850000, 1900000, 2700000, 2750000, 2800000, 2850000, 2900000,
154 };
155 
156 static const unsigned int LDO8_suspend_table[] = {
157 	1800000, 1850000, 1900000, 2700000, 2750000, 2800000, 2850000, 2900000,
158 };
159 
160 static const unsigned int LDO9_table[] = {
161 	1800000, 1850000, 1900000, 2700000, 2750000, 2800000, 2850000, 3300000,
162 };
163 
164 static const unsigned int LDO9_suspend_table[] = {
165 	1800000, 1850000, 1900000, 2700000, 2750000, 2800000, 2850000, 2900000,
166 };
167 
168 static const unsigned int LDO10_table[] = {
169 	1800000, 1850000, 1900000, 2700000, 2750000, 2800000, 2850000, 3300000,
170 	1200000, 1200000, 1200000, 1200000, 1200000, 1200000, 1200000, 1200000,
171 };
172 
173 static const unsigned int LDO10_suspend_table[] = {
174 	1800000, 1850000, 1900000, 2700000, 2750000, 2800000, 2850000, 2900000,
175 	1200000, 1200000, 1200000, 1200000, 1200000, 1200000, 1200000, 1200000,
176 };
177 
178 static const unsigned int LDO12_table[] = {
179 	1800000, 1900000, 2700000, 2800000, 2900000, 3000000, 3100000, 3300000,
180 	1200000, 1200000, 1200000, 1200000, 1200000, 1200000, 1200000, 1200000,
181 };
182 
183 static const unsigned int LDO12_suspend_table[] = {
184 	1800000, 1900000, 2700000, 2800000, 2900000, 2900000, 2900000, 2900000,
185 	1200000, 1200000, 1200000, 1200000, 1200000, 1200000, 1200000, 1200000,
186 };
187 
188 static const unsigned int LDO13_table[] = {
189 	1200000, 1300000, 1800000, 2000000, 2500000, 2800000, 3000000, 0,
190 };
191 
192 static const unsigned int LDO13_suspend_table[] = {
193 	0,
194 };
195 
196 static const unsigned int LDO14_table[] = {
197 	1800000, 1850000, 2700000, 2750000, 2800000, 2850000, 2900000, 3300000,
198 };
199 
200 static const unsigned int LDO14_suspend_table[] = {
201 	1800000, 1850000, 2700000, 2750000, 2800000, 2850000, 2900000, 2900000,
202 };
203 
204 static int pm8607_list_voltage(struct regulator_dev *rdev, unsigned index)
205 {
206 	struct pm8607_regulator_info *info = rdev_get_drvdata(rdev);
207 	int ret;
208 
209 	ret = regulator_list_voltage_table(rdev, index);
210 	if (ret < 0)
211 		return ret;
212 
213 	if (info->slope_double)
214 		ret <<= 1;
215 
216 	return ret;
217 }
218 
219 static const struct regulator_ops pm8607_regulator_ops = {
220 	.list_voltage	= pm8607_list_voltage,
221 	.set_voltage_sel = regulator_set_voltage_sel_regmap,
222 	.get_voltage_sel = regulator_get_voltage_sel_regmap,
223 	.enable = regulator_enable_regmap,
224 	.disable = regulator_disable_regmap,
225 	.is_enabled = regulator_is_enabled_regmap,
226 };
227 
228 static const struct regulator_ops pm8606_preg_ops = {
229 	.enable		= regulator_enable_regmap,
230 	.disable	= regulator_disable_regmap,
231 	.is_enabled	= regulator_is_enabled_regmap,
232 };
233 
234 #define PM8606_PREG(ereg, ebit)						\
235 {									\
236 	.desc	= {							\
237 		.name	= "PREG",					\
238 		.of_match = of_match_ptr("PREG"),			\
239 		.regulators_node = of_match_ptr("regulators"),		\
240 		.ops	= &pm8606_preg_ops,				\
241 		.type	= REGULATOR_CURRENT,				\
242 		.id	= PM8606_ID_PREG,				\
243 		.owner	= THIS_MODULE,					\
244 		.enable_reg = PM8606_##ereg,				\
245 		.enable_mask = (ebit),					\
246 		.enable_is_inverted = true,				\
247 	},								\
248 }
249 
250 #define PM8607_DVC(vreg, ureg, ubit, ereg, ebit)			\
251 {									\
252 	.desc	= {							\
253 		.name	= #vreg,					\
254 		.of_match = of_match_ptr(#vreg),			\
255 		.regulators_node = of_match_ptr("regulators"),		\
256 		.ops	= &pm8607_regulator_ops,			\
257 		.type	= REGULATOR_VOLTAGE,				\
258 		.id	= PM8607_ID_##vreg,				\
259 		.owner	= THIS_MODULE,					\
260 		.volt_table = vreg##_table,				\
261 		.n_voltages = ARRAY_SIZE(vreg##_table),			\
262 		.vsel_reg = PM8607_##vreg,				\
263 		.vsel_mask = ARRAY_SIZE(vreg##_table) - 1,		\
264 		.apply_reg = PM8607_##ureg,				\
265 		.apply_bit = (ubit),					\
266 		.enable_reg = PM8607_##ereg,				\
267 		.enable_mask = 1 << (ebit),				\
268 	},								\
269 	.slope_double	= (0),						\
270 	.vol_suspend	= (unsigned int *)&vreg##_suspend_table,	\
271 }
272 
273 #define PM8607_LDO(_id, vreg, shift, ereg, ebit)			\
274 {									\
275 	.desc	= {							\
276 		.name	= "LDO" #_id,					\
277 		.of_match = of_match_ptr("LDO" #_id),			\
278 		.regulators_node = of_match_ptr("regulators"),		\
279 		.ops	= &pm8607_regulator_ops,			\
280 		.type	= REGULATOR_VOLTAGE,				\
281 		.id	= PM8607_ID_LDO##_id,				\
282 		.owner	= THIS_MODULE,					\
283 		.volt_table = LDO##_id##_table,				\
284 		.n_voltages = ARRAY_SIZE(LDO##_id##_table),		\
285 		.vsel_reg = PM8607_##vreg,				\
286 		.vsel_mask = (ARRAY_SIZE(LDO##_id##_table) - 1) << (shift), \
287 		.enable_reg = PM8607_##ereg,				\
288 		.enable_mask = 1 << (ebit),				\
289 	},								\
290 	.slope_double	= (0),						\
291 	.vol_suspend	= (unsigned int *)&LDO##_id##_suspend_table,	\
292 }
293 
294 static struct pm8607_regulator_info pm8607_regulator_info[] = {
295 	PM8607_DVC(BUCK1, GO, BIT(0), SUPPLIES_EN11, 0),
296 	PM8607_DVC(BUCK2, GO, BIT(1), SUPPLIES_EN11, 1),
297 	PM8607_DVC(BUCK3, GO, BIT(2), SUPPLIES_EN11, 2),
298 
299 	PM8607_LDO(1,         LDO1, 0, SUPPLIES_EN11, 3),
300 	PM8607_LDO(2,         LDO2, 0, SUPPLIES_EN11, 4),
301 	PM8607_LDO(3,         LDO3, 0, SUPPLIES_EN11, 5),
302 	PM8607_LDO(4,         LDO4, 0, SUPPLIES_EN11, 6),
303 	PM8607_LDO(5,         LDO5, 0, SUPPLIES_EN11, 7),
304 	PM8607_LDO(6,         LDO6, 0, SUPPLIES_EN12, 0),
305 	PM8607_LDO(7,         LDO7, 0, SUPPLIES_EN12, 1),
306 	PM8607_LDO(8,         LDO8, 0, SUPPLIES_EN12, 2),
307 	PM8607_LDO(9,         LDO9, 0, SUPPLIES_EN12, 3),
308 	PM8607_LDO(10,        LDO10, 0, SUPPLIES_EN12, 4),
309 	PM8607_LDO(12,        LDO12, 0, SUPPLIES_EN12, 5),
310 	PM8607_LDO(13, VIBRATOR_SET, 1, VIBRATOR_SET, 0),
311 	PM8607_LDO(14,        LDO14, 0, SUPPLIES_EN12, 6),
312 };
313 
314 static struct pm8607_regulator_info pm8606_regulator_info[] = {
315 	PM8606_PREG(PREREGULATORB, 5),
316 };
317 
318 static int pm8607_regulator_probe(struct platform_device *pdev)
319 {
320 	struct pm860x_chip *chip = dev_get_drvdata(pdev->dev.parent);
321 	struct pm8607_regulator_info *info = NULL;
322 	struct regulator_init_data *pdata = dev_get_platdata(&pdev->dev);
323 	struct regulator_config config = { };
324 	struct regulator_dev *rdev;
325 	struct resource *res;
326 	int i;
327 
328 	res = platform_get_resource(pdev, IORESOURCE_REG, 0);
329 	if (res) {
330 		/* There're resources in 88PM8607 regulator driver */
331 		for (i = 0; i < ARRAY_SIZE(pm8607_regulator_info); i++) {
332 			info = &pm8607_regulator_info[i];
333 			if (info->desc.vsel_reg == res->start)
334 				break;
335 		}
336 		if (i == ARRAY_SIZE(pm8607_regulator_info)) {
337 			dev_err(&pdev->dev, "Failed to find regulator %llu\n",
338 				(unsigned long long)res->start);
339 			return -EINVAL;
340 		}
341 	} else {
342 		/* There's no resource in 88PM8606 PREG regulator driver */
343 		info = &pm8606_regulator_info[0];
344 		/* i is used to check regulator ID */
345 		i = -1;
346 	}
347 
348 	/* check DVC ramp slope double */
349 	if ((i == PM8607_ID_BUCK3) && chip->buck3_double)
350 		info->slope_double = 1;
351 
352 	config.dev = chip->dev;
353 	config.driver_data = info;
354 
355 	if (pdata)
356 		config.init_data = pdata;
357 
358 	if (chip->id == CHIP_PM8607)
359 		config.regmap = chip->regmap;
360 	else
361 		config.regmap = chip->regmap_companion;
362 
363 	rdev = devm_regulator_register(&pdev->dev, &info->desc, &config);
364 	if (IS_ERR(rdev)) {
365 		dev_err(&pdev->dev, "failed to register regulator %s\n",
366 			info->desc.name);
367 		return PTR_ERR(rdev);
368 	}
369 
370 	platform_set_drvdata(pdev, info);
371 	return 0;
372 }
373 
374 static const struct platform_device_id pm8607_regulator_driver_ids[] = {
375 	{
376 		.name	= "88pm860x-regulator",
377 		.driver_data	= 0,
378 	}, {
379 		.name	= "88pm860x-preg",
380 		.driver_data	= 0,
381 	},
382 	{ },
383 };
384 MODULE_DEVICE_TABLE(platform, pm8607_regulator_driver_ids);
385 
386 static struct platform_driver pm8607_regulator_driver = {
387 	.driver		= {
388 		.name	= "88pm860x-regulator",
389 	},
390 	.probe		= pm8607_regulator_probe,
391 	.id_table	= pm8607_regulator_driver_ids,
392 };
393 
394 static int __init pm8607_regulator_init(void)
395 {
396 	return platform_driver_register(&pm8607_regulator_driver);
397 }
398 subsys_initcall(pm8607_regulator_init);
399 
400 static void __exit pm8607_regulator_exit(void)
401 {
402 	platform_driver_unregister(&pm8607_regulator_driver);
403 }
404 module_exit(pm8607_regulator_exit);
405 
406 MODULE_LICENSE("GPL");
407 MODULE_AUTHOR("Haojian Zhuang <haojian.zhuang@marvell.com>");
408 MODULE_DESCRIPTION("Regulator Driver for Marvell 88PM8607 PMIC");
409 MODULE_ALIAS("platform:88pm8607-regulator");
410