1 // SPDX-License-Identifier: GPL-2.0-only
2 /*
3  * Regulators driver for Marvell 88PM8607
4  *
5  * Copyright (C) 2009 Marvell International Ltd.
6  *	Haojian Zhuang <haojian.zhuang@marvell.com>
7  */
8 #include <linux/kernel.h>
9 #include <linux/init.h>
10 #include <linux/err.h>
11 #include <linux/of.h>
12 #include <linux/regulator/of_regulator.h>
13 #include <linux/platform_device.h>
14 #include <linux/regulator/driver.h>
15 #include <linux/regulator/machine.h>
16 #include <linux/mfd/88pm860x.h>
17 #include <linux/module.h>
18 
19 struct pm8607_regulator_info {
20 	struct regulator_desc	desc;
21 
22 	unsigned int	*vol_suspend;
23 
24 	int	slope_double;
25 };
26 
27 static const unsigned int BUCK1_table[] = {
28 	 725000,  750000,  775000,  800000,  825000,  850000,  875000,  900000,
29 	 925000,  950000,  975000, 1000000, 1025000, 1050000, 1075000, 1100000,
30 	1125000, 1150000, 1175000, 1200000, 1225000, 1250000, 1275000, 1300000,
31 	1325000, 1350000, 1375000, 1400000, 1425000, 1450000, 1475000, 1500000,
32 	      0,   25000,   50000,   75000,  100000,  125000,  150000,  175000,
33 	 200000,  225000,  250000,  275000,  300000,  325000,  350000,  375000,
34 	 400000,  425000,  450000,  475000,  500000,  525000,  550000,  575000,
35 	 600000,  625000,  650000,  675000,  700000,  725000,  750000,  775000,
36 };
37 
38 static const unsigned int BUCK1_suspend_table[] = {
39 	      0,   25000,   50000,   75000,  100000,  125000,  150000,  175000,
40 	 200000,  225000,  250000,  275000,  300000,  325000,  350000,  375000,
41 	 400000,  425000,  450000,  475000,  500000,  525000,  550000,  575000,
42 	 600000,  625000,  650000,  675000,  700000,  725000,  750000,  775000,
43 	 800000,  825000,  850000,  875000,  900000,  925000,  950000,  975000,
44 	1000000, 1025000, 1050000, 1075000, 1100000, 1125000, 1150000, 1175000,
45 	1200000, 1225000, 1250000, 1275000, 1300000, 1325000, 1350000, 1375000,
46 	1400000, 1425000, 1450000, 1475000, 1500000, 1500000, 1500000, 1500000,
47 };
48 
49 static const unsigned int BUCK2_table[] = {
50 	      0,   50000,  100000,  150000,  200000,  250000,  300000,  350000,
51 	 400000,  450000,  500000,  550000,  600000,  650000,  700000,  750000,
52 	 800000,  850000,  900000,  950000, 1000000, 1050000, 1100000, 1150000,
53 	1200000, 1250000, 1300000, 1350000, 1400000, 1450000, 1500000, 1550000,
54 	1600000, 1650000, 1700000, 1750000, 1800000, 1850000, 1900000, 1950000,
55 	2000000, 2050000, 2100000, 2150000, 2200000, 2250000, 2300000, 2350000,
56 	2400000, 2450000, 2500000, 2550000, 2600000, 2650000, 2700000, 2750000,
57 	2800000, 2850000, 2900000, 2950000, 3000000, 3000000, 3000000, 3000000,
58 };
59 
60 static const unsigned int BUCK2_suspend_table[] = {
61 	      0,   50000,  100000,  150000,  200000,  250000,  300000,  350000,
62 	 400000,  450000,  500000,  550000,  600000,  650000,  700000,  750000,
63 	 800000,  850000,  900000,  950000, 1000000, 1050000, 1100000, 1150000,
64 	1200000, 1250000, 1300000, 1350000, 1400000, 1450000, 1500000, 1550000,
65 	1600000, 1650000, 1700000, 1750000, 1800000, 1850000, 1900000, 1950000,
66 	2000000, 2050000, 2100000, 2150000, 2200000, 2250000, 2300000, 2350000,
67 	2400000, 2450000, 2500000, 2550000, 2600000, 2650000, 2700000, 2750000,
68 	2800000, 2850000, 2900000, 2950000, 3000000, 3000000, 3000000, 3000000,
69 };
70 
71 static const unsigned int BUCK3_table[] = {
72 	      0,   25000,   50000,   75000,  100000,  125000,  150000,  175000,
73 	 200000,  225000,  250000,  275000,  300000,  325000,  350000,  375000,
74 	 400000,  425000,  450000,  475000,  500000,  525000,  550000,  575000,
75 	 600000,  625000,  650000,  675000,  700000,  725000,  750000,  775000,
76 	 800000,  825000,  850000,  875000,  900000,  925000,  950000,  975000,
77 	1000000, 1025000, 1050000, 1075000, 1100000, 1125000, 1150000, 1175000,
78 	1200000, 1225000, 1250000, 1275000, 1300000, 1325000, 1350000, 1375000,
79 	1400000, 1425000, 1450000, 1475000, 1500000, 1500000, 1500000, 1500000,
80 };
81 
82 static const unsigned int BUCK3_suspend_table[] = {
83 	      0,   25000,   50000,   75000,  100000,  125000,  150000,  175000,
84 	 200000,  225000,  250000,  275000,  300000,  325000,  350000,  375000,
85 	 400000,  425000,  450000,  475000,  500000,  525000,  550000,  575000,
86 	 600000,  625000,  650000,  675000,  700000,  725000,  750000,  775000,
87 	 800000,  825000,  850000,  875000,  900000,  925000,  950000,  975000,
88 	1000000, 1025000, 1050000, 1075000, 1100000, 1125000, 1150000, 1175000,
89 	1200000, 1225000, 1250000, 1275000, 1300000, 1325000, 1350000, 1375000,
90 	1400000, 1425000, 1450000, 1475000, 1500000, 1500000, 1500000, 1500000,
91 };
92 
93 static const unsigned int LDO1_table[] = {
94 	1800000, 1200000, 2800000, 0,
95 };
96 
97 static const unsigned int LDO1_suspend_table[] = {
98 	1800000, 1200000, 0, 0,
99 };
100 
101 static const unsigned int LDO2_table[] = {
102 	1800000, 1850000, 1900000, 2700000, 2750000, 2800000, 2850000, 3300000,
103 };
104 
105 static const unsigned int LDO2_suspend_table[] = {
106 	1800000, 1850000, 1900000, 2700000, 2750000, 2800000, 2850000, 2900000,
107 };
108 
109 static const unsigned int LDO3_table[] = {
110 	1800000, 1850000, 1900000, 2700000, 2750000, 2800000, 2850000, 3300000,
111 };
112 
113 static const unsigned int LDO3_suspend_table[] = {
114 	1800000, 1850000, 1900000, 2700000, 2750000, 2800000, 2850000, 2900000,
115 };
116 
117 static const unsigned int LDO4_table[] = {
118 	1800000, 1850000, 1900000, 2700000, 2750000, 2800000, 2900000, 3300000,
119 };
120 
121 static const unsigned int LDO4_suspend_table[] = {
122 	1800000, 1850000, 1900000, 2700000, 2750000, 2800000, 2900000, 2900000,
123 };
124 
125 static const unsigned int LDO5_table[] = {
126 	2900000, 3000000, 3100000, 3300000,
127 };
128 
129 static const unsigned int LDO5_suspend_table[] = {
130 	2900000, 0, 0, 0,
131 };
132 
133 static const unsigned int LDO6_table[] = {
134 	1800000, 1850000, 2600000, 2650000, 2700000, 2750000, 2800000, 3300000,
135 };
136 
137 static const unsigned int LDO6_suspend_table[] = {
138 	1800000, 1850000, 2600000, 2650000, 2700000, 2750000, 2800000, 2900000,
139 };
140 
141 static const unsigned int LDO7_table[] = {
142 	1800000, 1850000, 1900000, 2700000, 2750000, 2800000, 2850000, 2900000,
143 };
144 
145 static const unsigned int LDO7_suspend_table[] = {
146 	1800000, 1850000, 1900000, 2700000, 2750000, 2800000, 2850000, 2900000,
147 };
148 
149 static const unsigned int LDO8_table[] = {
150 	1800000, 1850000, 1900000, 2700000, 2750000, 2800000, 2850000, 2900000,
151 };
152 
153 static const unsigned int LDO8_suspend_table[] = {
154 	1800000, 1850000, 1900000, 2700000, 2750000, 2800000, 2850000, 2900000,
155 };
156 
157 static const unsigned int LDO9_table[] = {
158 	1800000, 1850000, 1900000, 2700000, 2750000, 2800000, 2850000, 3300000,
159 };
160 
161 static const unsigned int LDO9_suspend_table[] = {
162 	1800000, 1850000, 1900000, 2700000, 2750000, 2800000, 2850000, 2900000,
163 };
164 
165 static const unsigned int LDO10_table[] = {
166 	1800000, 1850000, 1900000, 2700000, 2750000, 2800000, 2850000, 3300000,
167 	1200000, 1200000, 1200000, 1200000, 1200000, 1200000, 1200000, 1200000,
168 };
169 
170 static const unsigned int LDO10_suspend_table[] = {
171 	1800000, 1850000, 1900000, 2700000, 2750000, 2800000, 2850000, 2900000,
172 	1200000, 1200000, 1200000, 1200000, 1200000, 1200000, 1200000, 1200000,
173 };
174 
175 static const unsigned int LDO12_table[] = {
176 	1800000, 1900000, 2700000, 2800000, 2900000, 3000000, 3100000, 3300000,
177 	1200000, 1200000, 1200000, 1200000, 1200000, 1200000, 1200000, 1200000,
178 };
179 
180 static const unsigned int LDO12_suspend_table[] = {
181 	1800000, 1900000, 2700000, 2800000, 2900000, 2900000, 2900000, 2900000,
182 	1200000, 1200000, 1200000, 1200000, 1200000, 1200000, 1200000, 1200000,
183 };
184 
185 static const unsigned int LDO13_table[] = {
186 	1200000, 1300000, 1800000, 2000000, 2500000, 2800000, 3000000, 0,
187 };
188 
189 static const unsigned int LDO13_suspend_table[] = {
190 	0,
191 };
192 
193 static const unsigned int LDO14_table[] = {
194 	1800000, 1850000, 2700000, 2750000, 2800000, 2850000, 2900000, 3300000,
195 };
196 
197 static const unsigned int LDO14_suspend_table[] = {
198 	1800000, 1850000, 2700000, 2750000, 2800000, 2850000, 2900000, 2900000,
199 };
200 
pm8607_list_voltage(struct regulator_dev * rdev,unsigned index)201 static int pm8607_list_voltage(struct regulator_dev *rdev, unsigned index)
202 {
203 	struct pm8607_regulator_info *info = rdev_get_drvdata(rdev);
204 	int ret;
205 
206 	ret = regulator_list_voltage_table(rdev, index);
207 	if (ret < 0)
208 		return ret;
209 
210 	if (info->slope_double)
211 		ret <<= 1;
212 
213 	return ret;
214 }
215 
216 static const struct regulator_ops pm8607_regulator_ops = {
217 	.list_voltage	= pm8607_list_voltage,
218 	.set_voltage_sel = regulator_set_voltage_sel_regmap,
219 	.get_voltage_sel = regulator_get_voltage_sel_regmap,
220 	.enable = regulator_enable_regmap,
221 	.disable = regulator_disable_regmap,
222 	.is_enabled = regulator_is_enabled_regmap,
223 };
224 
225 static const struct regulator_ops pm8606_preg_ops = {
226 	.enable		= regulator_enable_regmap,
227 	.disable	= regulator_disable_regmap,
228 	.is_enabled	= regulator_is_enabled_regmap,
229 };
230 
231 #define PM8606_PREG(ereg, ebit)						\
232 {									\
233 	.desc	= {							\
234 		.name	= "PREG",					\
235 		.of_match = of_match_ptr("PREG"),			\
236 		.regulators_node = of_match_ptr("regulators"),		\
237 		.ops	= &pm8606_preg_ops,				\
238 		.type	= REGULATOR_CURRENT,				\
239 		.id	= PM8606_ID_PREG,				\
240 		.owner	= THIS_MODULE,					\
241 		.enable_reg = PM8606_##ereg,				\
242 		.enable_mask = (ebit),					\
243 		.enable_is_inverted = true,				\
244 	},								\
245 }
246 
247 #define PM8607_DVC(vreg, ureg, ubit, ereg, ebit)			\
248 {									\
249 	.desc	= {							\
250 		.name	= #vreg,					\
251 		.of_match = of_match_ptr(#vreg),			\
252 		.regulators_node = of_match_ptr("regulators"),		\
253 		.ops	= &pm8607_regulator_ops,			\
254 		.type	= REGULATOR_VOLTAGE,				\
255 		.id	= PM8607_ID_##vreg,				\
256 		.owner	= THIS_MODULE,					\
257 		.volt_table = vreg##_table,				\
258 		.n_voltages = ARRAY_SIZE(vreg##_table),			\
259 		.vsel_reg = PM8607_##vreg,				\
260 		.vsel_mask = ARRAY_SIZE(vreg##_table) - 1,		\
261 		.apply_reg = PM8607_##ureg,				\
262 		.apply_bit = (ubit),					\
263 		.enable_reg = PM8607_##ereg,				\
264 		.enable_mask = 1 << (ebit),				\
265 	},								\
266 	.slope_double	= (0),						\
267 	.vol_suspend	= (unsigned int *)&vreg##_suspend_table,	\
268 }
269 
270 #define PM8607_LDO(_id, vreg, shift, ereg, ebit)			\
271 {									\
272 	.desc	= {							\
273 		.name	= "LDO" #_id,					\
274 		.of_match = of_match_ptr("LDO" #_id),			\
275 		.regulators_node = of_match_ptr("regulators"),		\
276 		.ops	= &pm8607_regulator_ops,			\
277 		.type	= REGULATOR_VOLTAGE,				\
278 		.id	= PM8607_ID_LDO##_id,				\
279 		.owner	= THIS_MODULE,					\
280 		.volt_table = LDO##_id##_table,				\
281 		.n_voltages = ARRAY_SIZE(LDO##_id##_table),		\
282 		.vsel_reg = PM8607_##vreg,				\
283 		.vsel_mask = (ARRAY_SIZE(LDO##_id##_table) - 1) << (shift), \
284 		.enable_reg = PM8607_##ereg,				\
285 		.enable_mask = 1 << (ebit),				\
286 	},								\
287 	.slope_double	= (0),						\
288 	.vol_suspend	= (unsigned int *)&LDO##_id##_suspend_table,	\
289 }
290 
291 static struct pm8607_regulator_info pm8607_regulator_info[] = {
292 	PM8607_DVC(BUCK1, GO, BIT(0), SUPPLIES_EN11, 0),
293 	PM8607_DVC(BUCK2, GO, BIT(1), SUPPLIES_EN11, 1),
294 	PM8607_DVC(BUCK3, GO, BIT(2), SUPPLIES_EN11, 2),
295 
296 	PM8607_LDO(1,         LDO1, 0, SUPPLIES_EN11, 3),
297 	PM8607_LDO(2,         LDO2, 0, SUPPLIES_EN11, 4),
298 	PM8607_LDO(3,         LDO3, 0, SUPPLIES_EN11, 5),
299 	PM8607_LDO(4,         LDO4, 0, SUPPLIES_EN11, 6),
300 	PM8607_LDO(5,         LDO5, 0, SUPPLIES_EN11, 7),
301 	PM8607_LDO(6,         LDO6, 0, SUPPLIES_EN12, 0),
302 	PM8607_LDO(7,         LDO7, 0, SUPPLIES_EN12, 1),
303 	PM8607_LDO(8,         LDO8, 0, SUPPLIES_EN12, 2),
304 	PM8607_LDO(9,         LDO9, 0, SUPPLIES_EN12, 3),
305 	PM8607_LDO(10,        LDO10, 0, SUPPLIES_EN12, 4),
306 	PM8607_LDO(12,        LDO12, 0, SUPPLIES_EN12, 5),
307 	PM8607_LDO(13, VIBRATOR_SET, 1, VIBRATOR_SET, 0),
308 	PM8607_LDO(14,        LDO14, 0, SUPPLIES_EN12, 6),
309 };
310 
311 static struct pm8607_regulator_info pm8606_regulator_info[] = {
312 	PM8606_PREG(PREREGULATORB, 5),
313 };
314 
pm8607_regulator_probe(struct platform_device * pdev)315 static int pm8607_regulator_probe(struct platform_device *pdev)
316 {
317 	struct pm860x_chip *chip = dev_get_drvdata(pdev->dev.parent);
318 	struct pm8607_regulator_info *info = NULL;
319 	struct regulator_init_data *pdata = dev_get_platdata(&pdev->dev);
320 	struct regulator_config config = { };
321 	struct regulator_dev *rdev;
322 	struct resource *res;
323 	int i;
324 
325 	res = platform_get_resource(pdev, IORESOURCE_REG, 0);
326 	if (res) {
327 		/* There're resources in 88PM8607 regulator driver */
328 		for (i = 0; i < ARRAY_SIZE(pm8607_regulator_info); i++) {
329 			info = &pm8607_regulator_info[i];
330 			if (info->desc.vsel_reg == res->start)
331 				break;
332 		}
333 		if (i == ARRAY_SIZE(pm8607_regulator_info)) {
334 			dev_err(&pdev->dev, "Failed to find regulator %llu\n",
335 				(unsigned long long)res->start);
336 			return -EINVAL;
337 		}
338 	} else {
339 		/* There's no resource in 88PM8606 PREG regulator driver */
340 		info = &pm8606_regulator_info[0];
341 		/* i is used to check regulator ID */
342 		i = -1;
343 	}
344 
345 	/* check DVC ramp slope double */
346 	if ((i == PM8607_ID_BUCK3) && chip->buck3_double)
347 		info->slope_double = 1;
348 
349 	config.dev = chip->dev;
350 	config.driver_data = info;
351 
352 	if (pdata)
353 		config.init_data = pdata;
354 
355 	if (chip->id == CHIP_PM8607)
356 		config.regmap = chip->regmap;
357 	else
358 		config.regmap = chip->regmap_companion;
359 
360 	rdev = devm_regulator_register(&pdev->dev, &info->desc, &config);
361 	if (IS_ERR(rdev)) {
362 		dev_err(&pdev->dev, "failed to register regulator %s\n",
363 			info->desc.name);
364 		return PTR_ERR(rdev);
365 	}
366 
367 	platform_set_drvdata(pdev, info);
368 	return 0;
369 }
370 
371 static const struct platform_device_id pm8607_regulator_driver_ids[] = {
372 	{
373 		.name	= "88pm860x-regulator",
374 		.driver_data	= 0,
375 	}, {
376 		.name	= "88pm860x-preg",
377 		.driver_data	= 0,
378 	},
379 	{ },
380 };
381 MODULE_DEVICE_TABLE(platform, pm8607_regulator_driver_ids);
382 
383 static struct platform_driver pm8607_regulator_driver = {
384 	.driver		= {
385 		.name	= "88pm860x-regulator",
386 	},
387 	.probe		= pm8607_regulator_probe,
388 	.id_table	= pm8607_regulator_driver_ids,
389 };
390 
pm8607_regulator_init(void)391 static int __init pm8607_regulator_init(void)
392 {
393 	return platform_driver_register(&pm8607_regulator_driver);
394 }
395 subsys_initcall(pm8607_regulator_init);
396 
pm8607_regulator_exit(void)397 static void __exit pm8607_regulator_exit(void)
398 {
399 	platform_driver_unregister(&pm8607_regulator_driver);
400 }
401 module_exit(pm8607_regulator_exit);
402 
403 MODULE_LICENSE("GPL");
404 MODULE_AUTHOR("Haojian Zhuang <haojian.zhuang@marvell.com>");
405 MODULE_DESCRIPTION("Regulator Driver for Marvell 88PM8607 PMIC");
406 MODULE_ALIAS("platform:88pm8607-regulator");
407