summaryrefslogtreecommitdiff
path: root/drivers/regulator/tps65219-regulator.c
blob: b4065356392f0616aeb923361a446d6134641389 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
// SPDX-License-Identifier: GPL-2.0
//
// tps65219-regulator.c
//
// Regulator driver for TPS65219 PMIC
//
// Copyright (C) 2022 BayLibre Incorporated - https://www.baylibre.com/
//
// This implementation derived from tps65218 authored by
// "J Keerthy <j-keerthy@ti.com>"
//

#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/device.h>
#include <linux/init.h>
#include <linux/err.h>
#include <linux/of.h>
#include <linux/platform_device.h>
#include <linux/regmap.h>
#include <linux/regulator/of_regulator.h>
#include <linux/regulator/driver.h>
#include <linux/regulator/machine.h>
#include <linux/mfd/tps65219.h>

struct tps65219_regulator_irq_type {
	const char *irq_name;
	const char *regulator_name;
	const char *event_name;
	unsigned long event;
};

static struct tps65219_regulator_irq_type tps65219_regulator_irq_types[] = {
	{ "LDO3_SCG", "LDO3", "short circuit to ground", REGULATOR_EVENT_REGULATION_OUT },
	{ "LDO3_OC", "LDO3", "overcurrent", REGULATOR_EVENT_OVER_CURRENT },
	{ "LDO3_UV", "LDO3", "undervoltage", REGULATOR_EVENT_UNDER_VOLTAGE },
	{ "LDO4_SCG", "LDO4", "short circuit to ground", REGULATOR_EVENT_REGULATION_OUT },
	{ "LDO4_OC", "LDO4", "overcurrent", REGULATOR_EVENT_OVER_CURRENT },
	{ "LDO4_UV", "LDO4", "undervoltage", REGULATOR_EVENT_UNDER_VOLTAGE },
	{ "LDO1_SCG", "LDO1", "short circuit to ground", REGULATOR_EVENT_REGULATION_OUT },
	{ "LDO1_OC", "LDO1", "overcurrent", REGULATOR_EVENT_OVER_CURRENT },
	{ "LDO1_UV", "LDO1", "undervoltage", REGULATOR_EVENT_UNDER_VOLTAGE },
	{ "LDO2_SCG", "LDO2", "short circuit to ground", REGULATOR_EVENT_REGULATION_OUT },
	{ "LDO2_OC", "LDO2", "overcurrent", REGULATOR_EVENT_OVER_CURRENT },
	{ "LDO2_UV", "LDO2", "undervoltage", REGULATOR_EVENT_UNDER_VOLTAGE },
	{ "BUCK3_SCG", "BUCK3", "short circuit to ground", REGULATOR_EVENT_REGULATION_OUT },
	{ "BUCK3_OC", "BUCK3", "overcurrent", REGULATOR_EVENT_OVER_CURRENT },
	{ "BUCK3_NEG_OC", "BUCK3", "negative overcurrent", REGULATOR_EVENT_OVER_CURRENT },
	{ "BUCK3_UV", "BUCK3", "undervoltage", REGULATOR_EVENT_UNDER_VOLTAGE },
	{ "BUCK1_SCG", "BUCK1", "short circuit to ground", REGULATOR_EVENT_REGULATION_OUT },
	{ "BUCK1_OC", "BUCK1", "overcurrent", REGULATOR_EVENT_OVER_CURRENT },
	{ "BUCK1_NEG_OC", "BUCK1", "negative overcurrent", REGULATOR_EVENT_OVER_CURRENT },
	{ "BUCK1_UV", "BUCK1", "undervoltage", REGULATOR_EVENT_UNDER_VOLTAGE },
	{ "BUCK2_SCG", "BUCK2", "short circuit to ground", REGULATOR_EVENT_REGULATION_OUT },
	{ "BUCK2_OC", "BUCK2", "overcurrent", REGULATOR_EVENT_OVER_CURRENT },
	{ "BUCK2_NEG_OC", "BUCK2", "negative overcurrent", REGULATOR_EVENT_OVER_CURRENT },
	{ "BUCK2_UV", "BUCK2", "undervoltage", REGULATOR_EVENT_UNDER_VOLTAGE },
	{ "BUCK1_RV", "BUCK1", "residual voltage", REGULATOR_EVENT_OVER_VOLTAGE_WARN },
	{ "BUCK2_RV", "BUCK2", "residual voltage", REGULATOR_EVENT_OVER_VOLTAGE_WARN },
	{ "BUCK3_RV", "BUCK3", "residual voltage", REGULATOR_EVENT_OVER_VOLTAGE_WARN },
	{ "LDO1_RV", "LDO1", "residual voltage", REGULATOR_EVENT_OVER_VOLTAGE_WARN },
	{ "LDO2_RV", "LDO2", "residual voltage", REGULATOR_EVENT_OVER_VOLTAGE_WARN },
	{ "LDO3_RV", "LDO3", "residual voltage", REGULATOR_EVENT_OVER_VOLTAGE_WARN },
	{ "LDO4_RV", "LDO4", "residual voltage", REGULATOR_EVENT_OVER_VOLTAGE_WARN },
	{ "BUCK1_RV_SD", "BUCK1", "residual voltage on shutdown",
	 REGULATOR_EVENT_OVER_VOLTAGE_WARN },
	{ "BUCK2_RV_SD", "BUCK2", "residual voltage on shutdown",
	 REGULATOR_EVENT_OVER_VOLTAGE_WARN },
	{ "BUCK3_RV_SD", "BUCK3", "residual voltage on shutdown",
	 REGULATOR_EVENT_OVER_VOLTAGE_WARN },
	{ "LDO1_RV_SD", "LDO1", "residual voltage on shutdown", REGULATOR_EVENT_OVER_VOLTAGE_WARN },
	{ "LDO2_RV_SD", "LDO2", "residual voltage on shutdown", REGULATOR_EVENT_OVER_VOLTAGE_WARN },
	{ "LDO3_RV_SD", "LDO3", "residual voltage on shutdown", REGULATOR_EVENT_OVER_VOLTAGE_WARN },
	{ "LDO4_RV_SD", "LDO4", "residual voltage on shutdown", REGULATOR_EVENT_OVER_VOLTAGE_WARN },
	{ "SENSOR_3_WARM", "SENSOR3", "warm temperature", REGULATOR_EVENT_OVER_TEMP_WARN},
	{ "SENSOR_2_WARM", "SENSOR2", "warm temperature", REGULATOR_EVENT_OVER_TEMP_WARN },
	{ "SENSOR_1_WARM", "SENSOR1", "warm temperature", REGULATOR_EVENT_OVER_TEMP_WARN },
	{ "SENSOR_0_WARM", "SENSOR0", "warm temperature", REGULATOR_EVENT_OVER_TEMP_WARN },
	{ "SENSOR_3_HOT", "SENSOR3", "hot temperature", REGULATOR_EVENT_OVER_TEMP},
	{ "SENSOR_2_HOT", "SENSOR2", "hot temperature", REGULATOR_EVENT_OVER_TEMP },
	{ "SENSOR_1_HOT", "SENSOR1", "hot temperature", REGULATOR_EVENT_OVER_TEMP },
	{ "SENSOR_0_HOT", "SENSOR0", "hot temperature", REGULATOR_EVENT_OVER_TEMP },
	{ "TIMEOUT", "", "", REGULATOR_EVENT_ABORT_VOLTAGE_CHANGE },
};

struct tps65219_regulator_irq_data {
	struct device *dev;
	struct tps65219_regulator_irq_type *type;
	struct regulator_dev *rdev;
};

#define TPS65219_REGULATOR(_name, _of, _id, _type, _ops, _n, _vr, _vm, _er, \
			   _em, _cr, _cm, _lr, _nlr, _delay, _fuv, \
			   _ct, _ncl, _bpm) \
	{								\
		.name			= _name,			\
		.of_match		= _of,				\
		.regulators_node	= of_match_ptr("regulators"),	\
		.supply_name		= _of,				\
		.id			= _id,				\
		.ops			= &(_ops),			\
		.n_voltages		= _n,				\
		.type			= _type,			\
		.owner			= THIS_MODULE,			\
		.vsel_reg		= _vr,				\
		.vsel_mask		= _vm,				\
		.csel_reg		= _cr,				\
		.csel_mask		= _cm,				\
		.curr_table		= _ct,				\
		.n_current_limits	= _ncl,				\
		.enable_reg		= _er,				\
		.enable_mask		= _em,				\
		.volt_table		= NULL,				\
		.linear_ranges		= _lr,				\
		.n_linear_ranges	= _nlr,				\
		.ramp_delay		= _delay,			\
		.fixed_uV		= _fuv,				\
		.bypass_reg		= _vr,				\
		.bypass_mask		= _bpm,				\
	}								\

static const struct linear_range bucks_ranges[] = {
	REGULATOR_LINEAR_RANGE(600000, 0x0, 0x1f, 25000),
	REGULATOR_LINEAR_RANGE(1400000, 0x20, 0x33, 100000),
	REGULATOR_LINEAR_RANGE(3400000, 0x34, 0x3f, 0),
};

static const struct linear_range ldos_1_2_ranges[] = {
	REGULATOR_LINEAR_RANGE(600000, 0x0, 0x37, 50000),
	REGULATOR_LINEAR_RANGE(3400000, 0x38, 0x3f, 0),
};

static const struct linear_range ldos_3_4_ranges[] = {
	REGULATOR_LINEAR_RANGE(1200000, 0x0, 0xC, 0),
	REGULATOR_LINEAR_RANGE(1250000, 0xD, 0x35, 50000),
	REGULATOR_LINEAR_RANGE(3300000, 0x36, 0x3F, 0),
};

static int tps65219_set_mode(struct regulator_dev *dev, unsigned int mode)
{
	struct tps65219 *tps = rdev_get_drvdata(dev);

	switch (mode) {
	case REGULATOR_MODE_NORMAL:
		return regmap_set_bits(tps->regmap, TPS65219_REG_STBY_1_CONFIG,
				       dev->desc->enable_mask);

	case REGULATOR_MODE_STANDBY:
		return regmap_clear_bits(tps->regmap,
					 TPS65219_REG_STBY_1_CONFIG,
					 dev->desc->enable_mask);
	default:
		return -EINVAL;
	}
}

static unsigned int tps65219_get_mode(struct regulator_dev *dev)
{
	struct tps65219 *tps = rdev_get_drvdata(dev);
	unsigned int rid = rdev_get_id(dev);
	int ret, value = 0;

	ret = regmap_read(tps->regmap, TPS65219_REG_STBY_1_CONFIG, &value);
	if (ret) {
		dev_dbg(tps->dev, "%s failed for regulator %s: %d ",
			__func__, dev->desc->name, ret);
		return ret;
	}
	value = (value & BIT(rid)) >> rid;
	if (value)
		return REGULATOR_MODE_STANDBY;
	else
		return REGULATOR_MODE_NORMAL;
}

/* Operations permitted on BUCK1/2/3 */
static const struct regulator_ops tps65219_bucks_ops = {
	.is_enabled		= regulator_is_enabled_regmap,
	.enable			= regulator_enable_regmap,
	.disable		= regulator_disable_regmap,
	.set_mode		= tps65219_set_mode,
	.get_mode		= tps65219_get_mode,
	.get_voltage_sel	= regulator_get_voltage_sel_regmap,
	.set_voltage_sel	= regulator_set_voltage_sel_regmap,
	.list_voltage		= regulator_list_voltage_linear_range,
	.map_voltage		= regulator_map_voltage_linear_range,
	.set_voltage_time_sel	= regulator_set_voltage_time_sel,

};

/* Operations permitted on LDO1/2 */
static const struct regulator_ops tps65219_ldos_1_2_ops = {
	.is_enabled		= regulator_is_enabled_regmap,
	.enable			= regulator_enable_regmap,
	.disable		= regulator_disable_regmap,
	.set_mode		= tps65219_set_mode,
	.get_mode		= tps65219_get_mode,
	.get_voltage_sel	= regulator_get_voltage_sel_regmap,
	.set_voltage_sel	= regulator_set_voltage_sel_regmap,
	.list_voltage		= regulator_list_voltage_linear_range,
	.map_voltage		= regulator_map_voltage_linear_range,
	.set_bypass		= regulator_set_bypass_regmap,
	.get_bypass		= regulator_get_bypass_regmap,
};

/* Operations permitted on LDO3/4 */
static const struct regulator_ops tps65219_ldos_3_4_ops = {
	.is_enabled		= regulator_is_enabled_regmap,
	.enable			= regulator_enable_regmap,
	.disable		= regulator_disable_regmap,
	.set_mode		= tps65219_set_mode,
	.get_mode		= tps65219_get_mode,
	.get_voltage_sel	= regulator_get_voltage_sel_regmap,
	.set_voltage_sel	= regulator_set_voltage_sel_regmap,
	.list_voltage		= regulator_list_voltage_linear_range,
	.map_voltage		= regulator_map_voltage_linear_range,
};

static const struct regulator_desc regulators[] = {
	TPS65219_REGULATOR("BUCK1", "buck1", TPS65219_BUCK_1,
			   REGULATOR_VOLTAGE, tps65219_bucks_ops, 64,
			   TPS65219_REG_BUCK1_VOUT,
			   TPS65219_BUCKS_LDOS_VOUT_VSET_MASK,
			   TPS65219_REG_ENABLE_CTRL,
			   TPS65219_ENABLE_BUCK1_EN_MASK, 0, 0, bucks_ranges,
			   3, 4000, 0, NULL, 0, 0),
	TPS65219_REGULATOR("BUCK2", "buck2", TPS65219_BUCK_2,
			   REGULATOR_VOLTAGE, tps65219_bucks_ops, 64,
			   TPS65219_REG_BUCK2_VOUT,
			   TPS65219_BUCKS_LDOS_VOUT_VSET_MASK,
			   TPS65219_REG_ENABLE_CTRL,
			   TPS65219_ENABLE_BUCK2_EN_MASK, 0, 0, bucks_ranges,
			   3, 4000, 0, NULL, 0, 0),
	TPS65219_REGULATOR("BUCK3", "buck3", TPS65219_BUCK_3,
			   REGULATOR_VOLTAGE, tps65219_bucks_ops, 64,
			   TPS65219_REG_BUCK3_VOUT,
			   TPS65219_BUCKS_LDOS_VOUT_VSET_MASK,
			   TPS65219_REG_ENABLE_CTRL,
			   TPS65219_ENABLE_BUCK3_EN_MASK, 0, 0, bucks_ranges,
			   3, 0, 0, NULL, 0, 0),
	TPS65219_REGULATOR("LDO1", "ldo1", TPS65219_LDO_1,
			   REGULATOR_VOLTAGE, tps65219_ldos_1_2_ops, 64,
			   TPS65219_REG_LDO1_VOUT,
			   TPS65219_BUCKS_LDOS_VOUT_VSET_MASK,
			   TPS65219_REG_ENABLE_CTRL,
			   TPS65219_ENABLE_LDO1_EN_MASK, 0, 0, ldos_1_2_ranges,
			   2, 0, 0, NULL, 0, TPS65219_LDOS_BYP_CONFIG_MASK),
	TPS65219_REGULATOR("LDO2", "ldo2", TPS65219_LDO_2,
			   REGULATOR_VOLTAGE, tps65219_ldos_1_2_ops, 64,
			   TPS65219_REG_LDO2_VOUT,
			   TPS65219_BUCKS_LDOS_VOUT_VSET_MASK,
			   TPS65219_REG_ENABLE_CTRL,
			   TPS65219_ENABLE_LDO2_EN_MASK, 0, 0, ldos_1_2_ranges,
			   2, 0, 0, NULL, 0, TPS65219_LDOS_BYP_CONFIG_MASK),
	TPS65219_REGULATOR("LDO3", "ldo3", TPS65219_LDO_3,
			   REGULATOR_VOLTAGE, tps65219_ldos_3_4_ops, 64,
			   TPS65219_REG_LDO3_VOUT,
			   TPS65219_BUCKS_LDOS_VOUT_VSET_MASK,
			   TPS65219_REG_ENABLE_CTRL,
			   TPS65219_ENABLE_LDO3_EN_MASK, 0, 0, ldos_3_4_ranges,
			   3, 0, 0, NULL, 0, 0),
	TPS65219_REGULATOR("LDO4", "ldo4", TPS65219_LDO_4,
			   REGULATOR_VOLTAGE, tps65219_ldos_3_4_ops, 64,
			   TPS65219_REG_LDO4_VOUT,
			   TPS65219_BUCKS_LDOS_VOUT_VSET_MASK,
			   TPS65219_REG_ENABLE_CTRL,
			   TPS65219_ENABLE_LDO4_EN_MASK, 0, 0, ldos_3_4_ranges,
			   3, 0, 0, NULL, 0, 0),
};

static irqreturn_t tps65219_regulator_irq_handler(int irq, void *data)
{
	struct tps65219_regulator_irq_data *irq_data = data;

	if (irq_data->type->event_name[0] == '\0') {
		/* This is the timeout interrupt no specific regulator */
		dev_err(irq_data->dev,
			"System was put in shutdown due to timeout during an active or standby transition.\n");
		return IRQ_HANDLED;
	}

	regulator_notifier_call_chain(irq_data->rdev,
				      irq_data->type->event, NULL);

	dev_err(irq_data->dev, "Error IRQ trap %s for %s\n",
		irq_data->type->event_name, irq_data->type->regulator_name);
	return IRQ_HANDLED;
}

static int tps65219_get_rdev_by_name(const char *regulator_name,
				     struct regulator_dev *rdevtbl[7],
				     struct regulator_dev **dev)
{
	int i;

	for (i = 0; i < ARRAY_SIZE(regulators); i++) {
		if (strcmp(regulator_name, regulators[i].name) == 0) {
			*dev = rdevtbl[i];
			return 0;
		}
	}
	return -EINVAL;
}

static int tps65219_regulator_probe(struct platform_device *pdev)
{
	struct tps65219 *tps = dev_get_drvdata(pdev->dev.parent);
	struct regulator_dev *rdev;
	struct regulator_config config = { };
	int i;
	int error;
	int irq;
	struct tps65219_regulator_irq_data *irq_data;
	struct tps65219_regulator_irq_type *irq_type;
	struct regulator_dev *rdevtbl[7];

	config.dev = tps->dev;
	config.driver_data = tps;
	config.regmap = tps->regmap;

	for (i = 0; i < ARRAY_SIZE(regulators); i++) {
		dev_dbg(tps->dev, "%s regul i= %d START", __func__, i);
		rdev = devm_regulator_register(&pdev->dev, &regulators[i],
					       &config);
		if (IS_ERR(rdev)) {
			dev_err(tps->dev, "failed to register %s regulator\n",
				regulators[i].name);
			return PTR_ERR(rdev);
		}
		rdevtbl[i] = rdev;
		dev_dbg(tps->dev, "%s regul i= %d COMPLETED", __func__, i);
	}

	irq_data = devm_kmalloc(tps->dev,
				ARRAY_SIZE(tps65219_regulator_irq_types) *
				sizeof(struct tps65219_regulator_irq_data),
				GFP_KERNEL);
	if (!irq_data)
		return -ENOMEM;

	for (i = 0; i < ARRAY_SIZE(tps65219_regulator_irq_types); ++i) {
		irq_type = &tps65219_regulator_irq_types[i];

		irq = platform_get_irq_byname(pdev, irq_type->irq_name);
		if (irq < 0)
			return -EINVAL;

		irq_data[i].dev = tps->dev;
		irq_data[i].type = irq_type;

		tps65219_get_rdev_by_name(irq_type->regulator_name, rdevtbl, &rdev);
		if (IS_ERR(rdev)) {
			dev_err(tps->dev, "Failed to get rdev for %s\n",
				irq_type->regulator_name);
			return -EINVAL;
		}
		irq_data[i].rdev = rdev;

		error = devm_request_threaded_irq(tps->dev, irq, NULL,
						  tps65219_regulator_irq_handler,
						  IRQF_ONESHOT,
						  irq_type->irq_name,
						  &irq_data[i]);
		if (error) {
			dev_err(tps->dev, "failed to request %s IRQ %d: %d\n",
				irq_type->irq_name, irq, error);
			return error;
		}
	}

	return 0;
}

static const struct platform_device_id tps65219_regulator_id_table[] = {
	{ "tps65219-regulator", },
	{ /* sentinel */ }
};
MODULE_DEVICE_TABLE(platform, tps65219_regulator_id_table);

static struct platform_driver tps65219_regulator_driver = {
	.driver = {
		.name = "tps65219-pmic",
		.probe_type = PROBE_PREFER_ASYNCHRONOUS,
	},
	.probe = tps65219_regulator_probe,
	.id_table = tps65219_regulator_id_table,
};

module_platform_driver(tps65219_regulator_driver);

MODULE_AUTHOR("Jerome Neanne <j-neanne@baylibre.com>");
MODULE_DESCRIPTION("TPS65219 voltage regulator driver");
MODULE_ALIAS("platform:tps65219-pmic");
MODULE_LICENSE("GPL");