xref: /linux/drivers/regulator/tps6586x-regulator.c (revision 1ac731c529cd4d6adbce134754b51ff7d822b145)
1 // SPDX-License-Identifier: GPL-2.0-only
2 /*
3  * Regulator driver for TI TPS6586x
4  *
5  * Copyright (C) 2010 Compulab Ltd.
6  * Author: Mike Rapoport <mike@compulab.co.il>
7  *
8  * Based on da903x
9  * Copyright (C) 2006-2008 Marvell International Ltd.
10  * Copyright (C) 2008 Compulab Ltd.
11  */
12 
13 #include <linux/kernel.h>
14 #include <linux/module.h>
15 #include <linux/init.h>
16 #include <linux/err.h>
17 #include <linux/of.h>
18 #include <linux/slab.h>
19 #include <linux/platform_device.h>
20 #include <linux/regulator/driver.h>
21 #include <linux/regulator/machine.h>
22 #include <linux/regulator/of_regulator.h>
23 #include <linux/mfd/tps6586x.h>
24 
25 /* supply control and voltage setting  */
26 #define TPS6586X_SUPPLYENA	0x10
27 #define TPS6586X_SUPPLYENB	0x11
28 #define TPS6586X_SUPPLYENC	0x12
29 #define TPS6586X_SUPPLYEND	0x13
30 #define TPS6586X_SUPPLYENE	0x14
31 #define TPS6586X_VCC1		0x20
32 #define TPS6586X_VCC2		0x21
33 #define TPS6586X_SM1V1		0x23
34 #define TPS6586X_SM1V2		0x24
35 #define TPS6586X_SM1SL		0x25
36 #define TPS6586X_SM0V1		0x26
37 #define TPS6586X_SM0V2		0x27
38 #define TPS6586X_SM0SL		0x28
39 #define TPS6586X_LDO2AV1	0x29
40 #define TPS6586X_LDO2AV2	0x2A
41 #define TPS6586X_LDO2BV1	0x2F
42 #define TPS6586X_LDO2BV2	0x30
43 #define TPS6586X_LDO4V1		0x32
44 #define TPS6586X_LDO4V2		0x33
45 
46 /* converter settings  */
47 #define TPS6586X_SUPPLYV1	0x41
48 #define TPS6586X_SUPPLYV2	0x42
49 #define TPS6586X_SUPPLYV3	0x43
50 #define TPS6586X_SUPPLYV4	0x44
51 #define TPS6586X_SUPPLYV5	0x45
52 #define TPS6586X_SUPPLYV6	0x46
53 #define TPS6586X_SMODE1		0x47
54 #define TPS6586X_SMODE2		0x48
55 
56 struct tps6586x_regulator {
57 	struct regulator_desc desc;
58 
59 	int enable_bit[2];
60 	int enable_reg[2];
61 };
62 
63 static const struct regulator_ops tps6586x_rw_regulator_ops = {
64 	.list_voltage = regulator_list_voltage_table,
65 	.map_voltage = regulator_map_voltage_ascend,
66 	.get_voltage_sel = regulator_get_voltage_sel_regmap,
67 	.set_voltage_sel = regulator_set_voltage_sel_regmap,
68 
69 	.is_enabled = regulator_is_enabled_regmap,
70 	.enable = regulator_enable_regmap,
71 	.disable = regulator_disable_regmap,
72 };
73 
74 static const struct regulator_ops tps6586x_rw_linear_regulator_ops = {
75 	.list_voltage = regulator_list_voltage_linear,
76 	.get_voltage_sel = regulator_get_voltage_sel_regmap,
77 	.set_voltage_sel = regulator_set_voltage_sel_regmap,
78 
79 	.is_enabled = regulator_is_enabled_regmap,
80 	.enable = regulator_enable_regmap,
81 	.disable = regulator_disable_regmap,
82 };
83 
84 static const struct regulator_ops tps6586x_ro_regulator_ops = {
85 	.list_voltage = regulator_list_voltage_table,
86 	.map_voltage = regulator_map_voltage_ascend,
87 	.get_voltage_sel = regulator_get_voltage_sel_regmap,
88 
89 	.is_enabled = regulator_is_enabled_regmap,
90 	.enable = regulator_enable_regmap,
91 	.disable = regulator_disable_regmap,
92 };
93 
94 static const struct regulator_ops tps6586x_sys_regulator_ops = {
95 };
96 
97 static const unsigned int tps6586x_ldo0_voltages[] = {
98 	1200000, 1500000, 1800000, 2500000, 2700000, 2850000, 3100000, 3300000,
99 };
100 
101 static const unsigned int tps6586x_ldo_voltages[] = {
102 	1250000, 1500000, 1800000, 2500000, 2700000, 2850000, 3100000, 3300000,
103 };
104 
105 static const unsigned int tps658640_rtc_voltages[] = {
106 	2500000, 2850000, 3100000, 3300000,
107 };
108 
109 #define TPS6586X_REGULATOR(_id, _ops, _pin_name, vdata, vreg, shift, nbits, \
110 			   ereg0, ebit0, ereg1, ebit1, goreg, gobit)	\
111 	.desc	= {							\
112 		.supply_name = _pin_name,				\
113 		.name	= "REG-" #_id,					\
114 		.ops	= &tps6586x_## _ops ## _regulator_ops,		\
115 		.type	= REGULATOR_VOLTAGE,				\
116 		.id	= TPS6586X_ID_##_id,				\
117 		.n_voltages = ARRAY_SIZE(vdata##_voltages),		\
118 		.volt_table = vdata##_voltages,				\
119 		.owner	= THIS_MODULE,					\
120 		.enable_reg = TPS6586X_SUPPLY##ereg0,			\
121 		.enable_mask = 1 << (ebit0),				\
122 		.vsel_reg = TPS6586X_##vreg,				\
123 		.vsel_mask = ((1 << (nbits)) - 1) << (shift),		\
124 		.apply_reg = (goreg),				\
125 		.apply_bit = (gobit),				\
126 	},								\
127 	.enable_reg[0]	= TPS6586X_SUPPLY##ereg0,			\
128 	.enable_bit[0]	= (ebit0),					\
129 	.enable_reg[1]	= TPS6586X_SUPPLY##ereg1,			\
130 	.enable_bit[1]	= (ebit1),
131 
132 #define TPS6586X_REGULATOR_LINEAR(_id, _ops, _pin_name, n_volt, min_uv,	\
133 				  uv_step, vreg, shift, nbits, ereg0,	\
134 				  ebit0, ereg1, ebit1, goreg, gobit)	\
135 	.desc	= {							\
136 		.supply_name = _pin_name,				\
137 		.name	= "REG-" #_id,					\
138 		.ops	= &tps6586x_## _ops ## _regulator_ops,		\
139 		.type	= REGULATOR_VOLTAGE,				\
140 		.id	= TPS6586X_ID_##_id,				\
141 		.n_voltages = n_volt,					\
142 		.min_uV = min_uv,					\
143 		.uV_step = uv_step,					\
144 		.owner	= THIS_MODULE,					\
145 		.enable_reg = TPS6586X_SUPPLY##ereg0,			\
146 		.enable_mask = 1 << (ebit0),				\
147 		.vsel_reg = TPS6586X_##vreg,				\
148 		.vsel_mask = ((1 << (nbits)) - 1) << (shift),		\
149 		.apply_reg = (goreg),				\
150 		.apply_bit = (gobit),				\
151 	},								\
152 	.enable_reg[0]	= TPS6586X_SUPPLY##ereg0,			\
153 	.enable_bit[0]	= (ebit0),					\
154 	.enable_reg[1]	= TPS6586X_SUPPLY##ereg1,			\
155 	.enable_bit[1]	= (ebit1),
156 
157 #define TPS6586X_LDO(_id, _pname, vdata, vreg, shift, nbits,		\
158 		     ereg0, ebit0, ereg1, ebit1)			\
159 {									\
160 	TPS6586X_REGULATOR(_id, rw, _pname, vdata, vreg, shift, nbits,	\
161 			   ereg0, ebit0, ereg1, ebit1, 0, 0)		\
162 }
163 
164 #define TPS6586X_LDO_LINEAR(_id, _pname, n_volt, min_uv, uv_step, vreg,	\
165 			    shift, nbits, ereg0, ebit0, ereg1, ebit1)	\
166 {									\
167 	TPS6586X_REGULATOR_LINEAR(_id, rw_linear, _pname, n_volt,	\
168 				  min_uv, uv_step, vreg, shift, nbits,	\
169 				  ereg0, ebit0, ereg1, ebit1, 0, 0)	\
170 }
171 
172 #define TPS6586X_FIXED_LDO(_id, _pname, vdata, vreg, shift, nbits,	\
173 			  ereg0, ebit0, ereg1, ebit1)			\
174 {									\
175 	TPS6586X_REGULATOR(_id, ro, _pname, vdata, vreg, shift, nbits,	\
176 			   ereg0, ebit0, ereg1, ebit1, 0, 0)		\
177 }
178 
179 #define TPS6586X_DVM(_id, _pname, n_volt, min_uv, uv_step, vreg, shift,	\
180 		     nbits, ereg0, ebit0, ereg1, ebit1, goreg, gobit)	\
181 {									\
182 	TPS6586X_REGULATOR_LINEAR(_id, rw_linear, _pname, n_volt,	\
183 				  min_uv, uv_step, vreg, shift, nbits,	\
184 				  ereg0, ebit0, ereg1, ebit1, goreg,	\
185 				  gobit)				\
186 }
187 
188 #define TPS6586X_SYS_REGULATOR()					\
189 {									\
190 	.desc	= {							\
191 		.supply_name = "sys",					\
192 		.name	= "REG-SYS",					\
193 		.ops	= &tps6586x_sys_regulator_ops,			\
194 		.type	= REGULATOR_VOLTAGE,				\
195 		.id	= TPS6586X_ID_SYS,				\
196 		.owner	= THIS_MODULE,					\
197 	},								\
198 }
199 
200 static struct tps6586x_regulator tps6586x_regulator[] = {
201 	TPS6586X_SYS_REGULATOR(),
202 	TPS6586X_LDO(LDO_0, "vinldo01", tps6586x_ldo0, SUPPLYV1, 5, 3, ENC, 0,
203 					END, 0),
204 	TPS6586X_LDO(LDO_3, "vinldo23", tps6586x_ldo, SUPPLYV4, 0, 3, ENC, 2,
205 					END, 2),
206 	TPS6586X_LDO(LDO_5, "REG-SYS", tps6586x_ldo, SUPPLYV6, 0, 3, ENE, 6,
207 					ENE, 6),
208 	TPS6586X_LDO(LDO_6, "vinldo678", tps6586x_ldo, SUPPLYV3, 0, 3, ENC, 4,
209 					END, 4),
210 	TPS6586X_LDO(LDO_7, "vinldo678", tps6586x_ldo, SUPPLYV3, 3, 3, ENC, 5,
211 					END, 5),
212 	TPS6586X_LDO(LDO_8, "vinldo678", tps6586x_ldo, SUPPLYV2, 5, 3, ENC, 6,
213 					END, 6),
214 	TPS6586X_LDO(LDO_9, "vinldo9", tps6586x_ldo, SUPPLYV6, 3, 3, ENE, 7,
215 					ENE, 7),
216 	TPS6586X_LDO(LDO_RTC, "REG-SYS", tps6586x_ldo, SUPPLYV4, 3, 3, V4, 7,
217 					V4, 7),
218 	TPS6586X_LDO_LINEAR(LDO_1, "vinldo01", 32, 725000, 25000, SUPPLYV1,
219 			    0, 5, ENC, 1, END, 1),
220 	TPS6586X_LDO_LINEAR(SM_2, "vin-sm2", 32, 3000000, 50000, SUPPLYV2,
221 			    0, 5, ENC, 7, END, 7),
222 	TPS6586X_DVM(LDO_2, "vinldo23", 32, 725000, 25000, LDO2BV1, 0, 5,
223 		     ENA, 3, ENB, 3, TPS6586X_VCC2, BIT(6)),
224 	TPS6586X_DVM(LDO_4, "vinldo4", 32, 1700000, 25000, LDO4V1, 0, 5,
225 		     ENC, 3, END, 3, TPS6586X_VCC1, BIT(6)),
226 	TPS6586X_DVM(SM_0, "vin-sm0", 32, 725000, 25000, SM0V1, 0, 5,
227 		     ENA, 1, ENB, 1, TPS6586X_VCC1, BIT(2)),
228 	TPS6586X_DVM(SM_1, "vin-sm1", 32, 725000, 25000, SM1V1, 0, 5,
229 		     ENA, 0, ENB, 0, TPS6586X_VCC1, BIT(0)),
230 };
231 
232 static struct tps6586x_regulator tps658623_regulator[] = {
233 	TPS6586X_LDO_LINEAR(SM_2, "vin-sm2", 32, 1700000, 25000, SUPPLYV2,
234 			    0, 5, ENC, 7, END, 7),
235 };
236 
237 static struct tps6586x_regulator tps658640_regulator[] = {
238 	TPS6586X_LDO(LDO_3, "vinldo23", tps6586x_ldo0, SUPPLYV4, 0, 3,
239 					ENC, 2, END, 2),
240 	TPS6586X_LDO(LDO_5, "REG-SYS", tps6586x_ldo0, SUPPLYV6, 0, 3,
241 					ENE, 6, ENE, 6),
242 	TPS6586X_LDO(LDO_6, "vinldo678", tps6586x_ldo0, SUPPLYV3, 0, 3,
243 					ENC, 4, END, 4),
244 	TPS6586X_LDO(LDO_7, "vinldo678", tps6586x_ldo0, SUPPLYV3, 3, 3,
245 					ENC, 5, END, 5),
246 	TPS6586X_LDO(LDO_8, "vinldo678", tps6586x_ldo0, SUPPLYV2, 5, 3,
247 					ENC, 6, END, 6),
248 	TPS6586X_LDO(LDO_9, "vinldo9", tps6586x_ldo0, SUPPLYV6, 3, 3,
249 					ENE, 7, ENE, 7),
250 	TPS6586X_LDO_LINEAR(SM_2, "vin-sm2", 32, 2150000, 50000, SUPPLYV2,
251 			    0, 5, ENC, 7, END, 7),
252 
253 	TPS6586X_FIXED_LDO(LDO_RTC, "REG-SYS", tps658640_rtc, SUPPLYV4, 3, 2,
254 					V4, 7, V4, 7),
255 };
256 
257 static struct tps6586x_regulator tps658643_regulator[] = {
258 	TPS6586X_LDO_LINEAR(SM_2, "vin-sm2", 32, 1025000, 25000, SUPPLYV2,
259 			    0, 5, ENC, 7, END, 7),
260 };
261 
262 /*
263  * TPS6586X has 2 enable bits that are OR'ed to determine the actual
264  * regulator state. Clearing one of this bits allows switching
265  * regulator on and of with single register write.
266  */
tps6586x_regulator_preinit(struct device * parent,struct tps6586x_regulator * ri)267 static inline int tps6586x_regulator_preinit(struct device *parent,
268 					     struct tps6586x_regulator *ri)
269 {
270 	uint8_t val1, val2;
271 	int ret;
272 
273 	if (ri->enable_reg[0] == ri->enable_reg[1] &&
274 	    ri->enable_bit[0] == ri->enable_bit[1])
275 			return 0;
276 
277 	ret = tps6586x_read(parent, ri->enable_reg[0], &val1);
278 	if (ret)
279 		return ret;
280 
281 	ret = tps6586x_read(parent, ri->enable_reg[1], &val2);
282 	if (ret)
283 		return ret;
284 
285 	if (!(val2 & (1 << ri->enable_bit[1])))
286 		return 0;
287 
288 	/*
289 	 * The regulator is on, but it's enabled with the bit we don't
290 	 * want to use, so we switch the enable bits
291 	 */
292 	if (!(val1 & (1 << ri->enable_bit[0]))) {
293 		ret = tps6586x_set_bits(parent, ri->enable_reg[0],
294 					1 << ri->enable_bit[0]);
295 		if (ret)
296 			return ret;
297 	}
298 
299 	return tps6586x_clr_bits(parent, ri->enable_reg[1],
300 				 1 << ri->enable_bit[1]);
301 }
302 
tps6586x_regulator_set_slew_rate(struct platform_device * pdev,int id,struct regulator_init_data * p)303 static int tps6586x_regulator_set_slew_rate(struct platform_device *pdev,
304 			int id, struct regulator_init_data *p)
305 {
306 	struct device *parent = pdev->dev.parent;
307 	struct tps6586x_settings *setting = p->driver_data;
308 	uint8_t reg;
309 
310 	if (setting == NULL)
311 		return 0;
312 
313 	if (!(setting->slew_rate & TPS6586X_SLEW_RATE_SET))
314 		return 0;
315 
316 	/* only SM0 and SM1 can have the slew rate settings */
317 	switch (id) {
318 	case TPS6586X_ID_SM_0:
319 		reg = TPS6586X_SM0SL;
320 		break;
321 	case TPS6586X_ID_SM_1:
322 		reg = TPS6586X_SM1SL;
323 		break;
324 	default:
325 		dev_err(&pdev->dev, "Only SM0/SM1 can set slew rate\n");
326 		return -EINVAL;
327 	}
328 
329 	return tps6586x_write(parent, reg,
330 			setting->slew_rate & TPS6586X_SLEW_RATE_MASK);
331 }
332 
find_regulator_info(int id,int version)333 static struct tps6586x_regulator *find_regulator_info(int id, int version)
334 {
335 	struct tps6586x_regulator *ri;
336 	struct tps6586x_regulator *table = NULL;
337 	int num;
338 	int i;
339 
340 	switch (version) {
341 	case TPS658623:
342 	case TPS658624:
343 		table = tps658623_regulator;
344 		num = ARRAY_SIZE(tps658623_regulator);
345 		break;
346 	case TPS658640:
347 	case TPS658640v2:
348 		table = tps658640_regulator;
349 		num = ARRAY_SIZE(tps658640_regulator);
350 		break;
351 	case TPS658643:
352 		table = tps658643_regulator;
353 		num = ARRAY_SIZE(tps658643_regulator);
354 		break;
355 	}
356 
357 	/* Search version specific table first */
358 	if (table) {
359 		for (i = 0; i < num; i++) {
360 			ri = &table[i];
361 			if (ri->desc.id == id)
362 				return ri;
363 		}
364 	}
365 
366 	for (i = 0; i < ARRAY_SIZE(tps6586x_regulator); i++) {
367 		ri = &tps6586x_regulator[i];
368 		if (ri->desc.id == id)
369 			return ri;
370 	}
371 	return NULL;
372 }
373 
374 #ifdef CONFIG_OF
375 static struct of_regulator_match tps6586x_matches[] = {
376 	{ .name = "sys",     .driver_data = (void *)TPS6586X_ID_SYS     },
377 	{ .name = "sm0",     .driver_data = (void *)TPS6586X_ID_SM_0    },
378 	{ .name = "sm1",     .driver_data = (void *)TPS6586X_ID_SM_1    },
379 	{ .name = "sm2",     .driver_data = (void *)TPS6586X_ID_SM_2    },
380 	{ .name = "ldo0",    .driver_data = (void *)TPS6586X_ID_LDO_0   },
381 	{ .name = "ldo1",    .driver_data = (void *)TPS6586X_ID_LDO_1   },
382 	{ .name = "ldo2",    .driver_data = (void *)TPS6586X_ID_LDO_2   },
383 	{ .name = "ldo3",    .driver_data = (void *)TPS6586X_ID_LDO_3   },
384 	{ .name = "ldo4",    .driver_data = (void *)TPS6586X_ID_LDO_4   },
385 	{ .name = "ldo5",    .driver_data = (void *)TPS6586X_ID_LDO_5   },
386 	{ .name = "ldo6",    .driver_data = (void *)TPS6586X_ID_LDO_6   },
387 	{ .name = "ldo7",    .driver_data = (void *)TPS6586X_ID_LDO_7   },
388 	{ .name = "ldo8",    .driver_data = (void *)TPS6586X_ID_LDO_8   },
389 	{ .name = "ldo9",    .driver_data = (void *)TPS6586X_ID_LDO_9   },
390 	{ .name = "ldo_rtc", .driver_data = (void *)TPS6586X_ID_LDO_RTC },
391 };
392 
tps6586x_parse_regulator_dt(struct platform_device * pdev,struct of_regulator_match ** tps6586x_reg_matches)393 static struct tps6586x_platform_data *tps6586x_parse_regulator_dt(
394 		struct platform_device *pdev,
395 		struct of_regulator_match **tps6586x_reg_matches)
396 {
397 	const unsigned int num = ARRAY_SIZE(tps6586x_matches);
398 	struct device_node *np = pdev->dev.parent->of_node;
399 	struct device_node *regs;
400 	const char *sys_rail = NULL;
401 	unsigned int i;
402 	struct tps6586x_platform_data *pdata;
403 	int err;
404 
405 	regs = of_get_child_by_name(np, "regulators");
406 	if (!regs) {
407 		dev_err(&pdev->dev, "regulator node not found\n");
408 		return NULL;
409 	}
410 
411 	err = of_regulator_match(&pdev->dev, regs, tps6586x_matches, num);
412 	of_node_put(regs);
413 	if (err < 0) {
414 		dev_err(&pdev->dev, "Regulator match failed, e %d\n", err);
415 		return NULL;
416 	}
417 
418 	pdata = devm_kzalloc(&pdev->dev, sizeof(*pdata), GFP_KERNEL);
419 	if (!pdata)
420 		return NULL;
421 
422 	for (i = 0; i < num; i++) {
423 		uintptr_t id;
424 		if (!tps6586x_matches[i].init_data)
425 			continue;
426 
427 		pdata->reg_init_data[i] = tps6586x_matches[i].init_data;
428 		id = (uintptr_t)tps6586x_matches[i].driver_data;
429 		if (id == TPS6586X_ID_SYS)
430 			sys_rail = pdata->reg_init_data[i]->constraints.name;
431 
432 		if ((id == TPS6586X_ID_LDO_5) || (id == TPS6586X_ID_LDO_RTC))
433 			pdata->reg_init_data[i]->supply_regulator = sys_rail;
434 	}
435 	*tps6586x_reg_matches = tps6586x_matches;
436 	return pdata;
437 }
438 #else
tps6586x_parse_regulator_dt(struct platform_device * pdev,struct of_regulator_match ** tps6586x_reg_matches)439 static struct tps6586x_platform_data *tps6586x_parse_regulator_dt(
440 		struct platform_device *pdev,
441 		struct of_regulator_match **tps6586x_reg_matches)
442 {
443 	*tps6586x_reg_matches = NULL;
444 	return NULL;
445 }
446 #endif
447 
tps6586x_regulator_probe(struct platform_device * pdev)448 static int tps6586x_regulator_probe(struct platform_device *pdev)
449 {
450 	struct tps6586x_regulator *ri = NULL;
451 	struct regulator_config config = { };
452 	struct regulator_dev *rdev;
453 	struct regulator_init_data *reg_data;
454 	struct tps6586x_platform_data *pdata;
455 	struct of_regulator_match *tps6586x_reg_matches = NULL;
456 	int version;
457 	int id;
458 	int err;
459 
460 	dev_dbg(&pdev->dev, "Probing regulator\n");
461 
462 	pdata = dev_get_platdata(pdev->dev.parent);
463 	if ((!pdata) && (pdev->dev.parent->of_node))
464 		pdata = tps6586x_parse_regulator_dt(pdev,
465 					&tps6586x_reg_matches);
466 
467 	if (!pdata) {
468 		dev_err(&pdev->dev, "Platform data not available, exiting\n");
469 		return -ENODEV;
470 	}
471 
472 	version = tps6586x_get_version(pdev->dev.parent);
473 
474 	for (id = 0; id < TPS6586X_ID_MAX_REGULATOR; ++id) {
475 		reg_data = pdata->reg_init_data[id];
476 
477 		ri = find_regulator_info(id, version);
478 
479 		if (!ri) {
480 			dev_err(&pdev->dev, "invalid regulator ID specified\n");
481 			return -EINVAL;
482 		}
483 
484 		err = tps6586x_regulator_preinit(pdev->dev.parent, ri);
485 		if (err) {
486 			dev_err(&pdev->dev,
487 				"regulator %d preinit failed, e %d\n", id, err);
488 			return err;
489 		}
490 
491 		config.dev = pdev->dev.parent;
492 		config.init_data = reg_data;
493 		config.driver_data = ri;
494 
495 		if (tps6586x_reg_matches)
496 			config.of_node = tps6586x_reg_matches[id].of_node;
497 
498 		rdev = devm_regulator_register(&pdev->dev, &ri->desc, &config);
499 		if (IS_ERR(rdev)) {
500 			dev_err(&pdev->dev, "failed to register regulator %s\n",
501 					ri->desc.name);
502 			return PTR_ERR(rdev);
503 		}
504 
505 		if (reg_data) {
506 			err = tps6586x_regulator_set_slew_rate(pdev, id,
507 					reg_data);
508 			if (err < 0) {
509 				dev_err(&pdev->dev,
510 					"Slew rate config failed, e %d\n", err);
511 				return err;
512 			}
513 		}
514 	}
515 
516 	platform_set_drvdata(pdev, rdev);
517 	return 0;
518 }
519 
520 static struct platform_driver tps6586x_regulator_driver = {
521 	.driver	= {
522 		.name	= "tps6586x-regulator",
523 		.probe_type = PROBE_PREFER_ASYNCHRONOUS,
524 	},
525 	.probe		= tps6586x_regulator_probe,
526 };
527 
tps6586x_regulator_init(void)528 static int __init tps6586x_regulator_init(void)
529 {
530 	return platform_driver_register(&tps6586x_regulator_driver);
531 }
532 subsys_initcall(tps6586x_regulator_init);
533 
tps6586x_regulator_exit(void)534 static void __exit tps6586x_regulator_exit(void)
535 {
536 	platform_driver_unregister(&tps6586x_regulator_driver);
537 }
538 module_exit(tps6586x_regulator_exit);
539 
540 MODULE_LICENSE("GPL");
541 MODULE_AUTHOR("Mike Rapoport <mike@compulab.co.il>");
542 MODULE_DESCRIPTION("Regulator Driver for TI TPS6586X PMIC");
543 MODULE_ALIAS("platform:tps6586x-regulator");
544