cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
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pv88080-regulator.c (16255B)


      1// SPDX-License-Identifier: GPL-2.0+
      2//
      3// pv88080-regulator.c - Regulator device driver for PV88080
      4// Copyright (C) 2016  Powerventure Semiconductor Ltd.
      5
      6#include <linux/err.h>
      7#include <linux/i2c.h>
      8#include <linux/module.h>
      9#include <linux/of.h>
     10#include <linux/init.h>
     11#include <linux/slab.h>
     12#include <linux/regulator/driver.h>
     13#include <linux/regulator/machine.h>
     14#include <linux/regmap.h>
     15#include <linux/irq.h>
     16#include <linux/interrupt.h>
     17#include <linux/regulator/of_regulator.h>
     18#include "pv88080-regulator.h"
     19
     20#define PV88080_MAX_REGULATORS	4
     21
     22/* PV88080 REGULATOR IDs */
     23enum {
     24	/* BUCKs */
     25	PV88080_ID_BUCK1,
     26	PV88080_ID_BUCK2,
     27	PV88080_ID_BUCK3,
     28	PV88080_ID_HVBUCK,
     29};
     30
     31enum pv88080_types {
     32	TYPE_PV88080_AA,
     33	TYPE_PV88080_BA,
     34};
     35
     36struct pv88080_regulator {
     37	struct regulator_desc desc;
     38	unsigned int mode_reg;
     39	unsigned int conf2;
     40	unsigned int conf5;
     41};
     42
     43struct pv88080 {
     44	struct device *dev;
     45	struct regmap *regmap;
     46	struct regulator_dev *rdev[PV88080_MAX_REGULATORS];
     47	unsigned long type;
     48	const struct pv88080_compatible_regmap *regmap_config;
     49};
     50
     51struct pv88080_buck_voltage {
     52	int min_uV;
     53	int max_uV;
     54	int uV_step;
     55};
     56
     57struct pv88080_buck_regmap {
     58	/* REGS */
     59	int buck_enable_reg;
     60	int buck_vsel_reg;
     61	int buck_mode_reg;
     62	int buck_limit_reg;
     63	int buck_vdac_range_reg;
     64	int buck_vrange_gain_reg;
     65	/* MASKS */
     66	int buck_enable_mask;
     67	int buck_vsel_mask;
     68	int buck_limit_mask;
     69};
     70
     71struct pv88080_compatible_regmap {
     72	/* BUCK1, 2, 3 */
     73	struct pv88080_buck_regmap buck_regmap[PV88080_MAX_REGULATORS-1];
     74	/* HVBUCK */
     75	int hvbuck_enable_reg;
     76	int hvbuck_vsel_reg;
     77	int hvbuck_enable_mask;
     78	int hvbuck_vsel_mask;
     79};
     80
     81static const struct regmap_config pv88080_regmap_config = {
     82	.reg_bits = 8,
     83	.val_bits = 8,
     84};
     85
     86/* Current limits array (in uA) for BUCK1, BUCK2, BUCK3.
     87 * Entry indexes corresponds to register values.
     88 */
     89
     90static const unsigned int pv88080_buck1_limits[] = {
     91	3230000, 5130000, 6960000, 8790000
     92};
     93
     94static const unsigned int pv88080_buck23_limits[] = {
     95	1496000, 2393000, 3291000, 4189000
     96};
     97
     98static const struct pv88080_buck_voltage pv88080_buck_vol[2] = {
     99	{
    100		.min_uV = 600000,
    101		.max_uV = 1393750,
    102		.uV_step = 6250,
    103	},
    104	{
    105		.min_uV = 1400000,
    106		.max_uV = 2193750,
    107		.uV_step = 6250,
    108	},
    109};
    110
    111static const struct pv88080_compatible_regmap pv88080_aa_regs = {
    112	/* BUCK1 */
    113	.buck_regmap[0] = {
    114		.buck_enable_reg      = PV88080AA_REG_BUCK1_CONF0,
    115		.buck_vsel_reg        = PV88080AA_REG_BUCK1_CONF0,
    116		.buck_mode_reg        = PV88080AA_REG_BUCK1_CONF1,
    117		.buck_limit_reg       = PV88080AA_REG_BUCK1_CONF1,
    118		.buck_vdac_range_reg  = PV88080AA_REG_BUCK1_CONF2,
    119		.buck_vrange_gain_reg = PV88080AA_REG_BUCK1_CONF5,
    120		.buck_enable_mask     = PV88080_BUCK1_EN,
    121		.buck_vsel_mask       = PV88080_VBUCK1_MASK,
    122		.buck_limit_mask      = PV88080_BUCK1_ILIM_MASK,
    123	},
    124	/* BUCK2 */
    125	.buck_regmap[1] = {
    126		.buck_enable_reg      = PV88080AA_REG_BUCK2_CONF0,
    127		.buck_vsel_reg        = PV88080AA_REG_BUCK2_CONF0,
    128		.buck_mode_reg        = PV88080AA_REG_BUCK2_CONF1,
    129		.buck_limit_reg	      = PV88080AA_REG_BUCK2_CONF1,
    130		.buck_vdac_range_reg  = PV88080AA_REG_BUCK2_CONF2,
    131		.buck_vrange_gain_reg = PV88080AA_REG_BUCK2_CONF5,
    132		.buck_enable_mask	  = PV88080_BUCK2_EN,
    133		.buck_vsel_mask       = PV88080_VBUCK2_MASK,
    134		.buck_limit_mask      = PV88080_BUCK2_ILIM_MASK,
    135	},
    136	/* BUCK3 */
    137	.buck_regmap[2] = {
    138		.buck_enable_reg	  = PV88080AA_REG_BUCK3_CONF0,
    139		.buck_vsel_reg        = PV88080AA_REG_BUCK3_CONF0,
    140		.buck_mode_reg        = PV88080AA_REG_BUCK3_CONF1,
    141		.buck_limit_reg	      = PV88080AA_REG_BUCK3_CONF1,
    142		.buck_vdac_range_reg  = PV88080AA_REG_BUCK3_CONF2,
    143		.buck_vrange_gain_reg = PV88080AA_REG_BUCK3_CONF5,
    144		.buck_enable_mask	  = PV88080_BUCK3_EN,
    145		.buck_vsel_mask       = PV88080_VBUCK3_MASK,
    146		.buck_limit_mask      = PV88080_BUCK3_ILIM_MASK,
    147	},
    148	/* HVBUCK */
    149	.hvbuck_enable_reg	      = PV88080AA_REG_HVBUCK_CONF2,
    150	.hvbuck_vsel_reg          = PV88080AA_REG_HVBUCK_CONF1,
    151	.hvbuck_enable_mask       = PV88080_HVBUCK_EN,
    152	.hvbuck_vsel_mask         = PV88080_VHVBUCK_MASK,
    153};
    154
    155static const struct pv88080_compatible_regmap pv88080_ba_regs = {
    156	/* BUCK1 */
    157	.buck_regmap[0] = {
    158		.buck_enable_reg	  = PV88080BA_REG_BUCK1_CONF0,
    159		.buck_vsel_reg        = PV88080BA_REG_BUCK1_CONF0,
    160		.buck_mode_reg        = PV88080BA_REG_BUCK1_CONF1,
    161		.buck_limit_reg       = PV88080BA_REG_BUCK1_CONF1,
    162		.buck_vdac_range_reg  = PV88080BA_REG_BUCK1_CONF2,
    163		.buck_vrange_gain_reg = PV88080BA_REG_BUCK1_CONF5,
    164		.buck_enable_mask     = PV88080_BUCK1_EN,
    165		.buck_vsel_mask       = PV88080_VBUCK1_MASK,
    166		.buck_limit_mask	  = PV88080_BUCK1_ILIM_MASK,
    167	},
    168	/* BUCK2 */
    169	.buck_regmap[1] = {
    170		.buck_enable_reg	  = PV88080BA_REG_BUCK2_CONF0,
    171		.buck_vsel_reg        = PV88080BA_REG_BUCK2_CONF0,
    172		.buck_mode_reg        = PV88080BA_REG_BUCK2_CONF1,
    173		.buck_limit_reg	      = PV88080BA_REG_BUCK2_CONF1,
    174		.buck_vdac_range_reg  = PV88080BA_REG_BUCK2_CONF2,
    175		.buck_vrange_gain_reg = PV88080BA_REG_BUCK2_CONF5,
    176		.buck_enable_mask	  = PV88080_BUCK2_EN,
    177		.buck_vsel_mask       = PV88080_VBUCK2_MASK,
    178		.buck_limit_mask	  = PV88080_BUCK2_ILIM_MASK,
    179	},
    180	/* BUCK3 */
    181	.buck_regmap[2] = {
    182		.buck_enable_reg	  = PV88080BA_REG_BUCK3_CONF0,
    183		.buck_vsel_reg        = PV88080BA_REG_BUCK3_CONF0,
    184		.buck_mode_reg        = PV88080BA_REG_BUCK3_CONF1,
    185		.buck_limit_reg	      = PV88080BA_REG_BUCK3_CONF1,
    186		.buck_vdac_range_reg  = PV88080BA_REG_BUCK3_CONF2,
    187		.buck_vrange_gain_reg = PV88080BA_REG_BUCK3_CONF5,
    188		.buck_enable_mask	  = PV88080_BUCK3_EN,
    189		.buck_vsel_mask       = PV88080_VBUCK3_MASK,
    190		.buck_limit_mask	  = PV88080_BUCK3_ILIM_MASK,
    191	},
    192	/* HVBUCK */
    193	.hvbuck_enable_reg	      = PV88080BA_REG_HVBUCK_CONF2,
    194	.hvbuck_vsel_reg          = PV88080BA_REG_HVBUCK_CONF1,
    195	.hvbuck_enable_mask       = PV88080_HVBUCK_EN,
    196	.hvbuck_vsel_mask		  = PV88080_VHVBUCK_MASK,
    197};
    198
    199#ifdef CONFIG_OF
    200static const struct of_device_id pv88080_dt_ids[] = {
    201	{ .compatible = "pvs,pv88080",    .data = (void *)TYPE_PV88080_AA },
    202	{ .compatible = "pvs,pv88080-aa", .data = (void *)TYPE_PV88080_AA },
    203	{ .compatible = "pvs,pv88080-ba", .data = (void *)TYPE_PV88080_BA },
    204	{},
    205};
    206MODULE_DEVICE_TABLE(of, pv88080_dt_ids);
    207#endif
    208
    209static unsigned int pv88080_buck_get_mode(struct regulator_dev *rdev)
    210{
    211	struct pv88080_regulator *info = rdev_get_drvdata(rdev);
    212	unsigned int data;
    213	int ret, mode = 0;
    214
    215	ret = regmap_read(rdev->regmap, info->mode_reg, &data);
    216	if (ret < 0)
    217		return ret;
    218
    219	switch (data & PV88080_BUCK1_MODE_MASK) {
    220	case PV88080_BUCK_MODE_SYNC:
    221		mode = REGULATOR_MODE_FAST;
    222		break;
    223	case PV88080_BUCK_MODE_AUTO:
    224		mode = REGULATOR_MODE_NORMAL;
    225		break;
    226	case PV88080_BUCK_MODE_SLEEP:
    227		mode = REGULATOR_MODE_STANDBY;
    228		break;
    229	default:
    230		return -EINVAL;
    231	}
    232
    233	return mode;
    234}
    235
    236static int pv88080_buck_set_mode(struct regulator_dev *rdev,
    237					unsigned int mode)
    238{
    239	struct pv88080_regulator *info = rdev_get_drvdata(rdev);
    240	int val = 0;
    241
    242	switch (mode) {
    243	case REGULATOR_MODE_FAST:
    244		val = PV88080_BUCK_MODE_SYNC;
    245		break;
    246	case REGULATOR_MODE_NORMAL:
    247		val = PV88080_BUCK_MODE_AUTO;
    248		break;
    249	case REGULATOR_MODE_STANDBY:
    250		val = PV88080_BUCK_MODE_SLEEP;
    251		break;
    252	default:
    253		return -EINVAL;
    254	}
    255
    256	return regmap_update_bits(rdev->regmap, info->mode_reg,
    257					PV88080_BUCK1_MODE_MASK, val);
    258}
    259
    260static const struct regulator_ops pv88080_buck_ops = {
    261	.get_mode = pv88080_buck_get_mode,
    262	.set_mode = pv88080_buck_set_mode,
    263	.enable = regulator_enable_regmap,
    264	.disable = regulator_disable_regmap,
    265	.is_enabled = regulator_is_enabled_regmap,
    266	.set_voltage_sel = regulator_set_voltage_sel_regmap,
    267	.get_voltage_sel = regulator_get_voltage_sel_regmap,
    268	.list_voltage = regulator_list_voltage_linear,
    269	.set_current_limit = regulator_set_current_limit_regmap,
    270	.get_current_limit = regulator_get_current_limit_regmap,
    271};
    272
    273static const struct regulator_ops pv88080_hvbuck_ops = {
    274	.enable = regulator_enable_regmap,
    275	.disable = regulator_disable_regmap,
    276	.is_enabled = regulator_is_enabled_regmap,
    277	.set_voltage_sel = regulator_set_voltage_sel_regmap,
    278	.get_voltage_sel = regulator_get_voltage_sel_regmap,
    279	.list_voltage = regulator_list_voltage_linear,
    280};
    281
    282#define PV88080_BUCK(chip, regl_name, min, step, max, limits_array) \
    283{\
    284	.desc	=	{\
    285		.id = chip##_ID_##regl_name,\
    286		.name = __stringify(chip##_##regl_name),\
    287		.of_match = of_match_ptr(#regl_name),\
    288		.regulators_node = of_match_ptr("regulators"),\
    289		.type = REGULATOR_VOLTAGE,\
    290		.owner = THIS_MODULE,\
    291		.ops = &pv88080_buck_ops,\
    292		.min_uV = min, \
    293		.uV_step = step, \
    294		.n_voltages = ((max) - (min))/(step) + 1, \
    295		.curr_table = limits_array, \
    296		.n_current_limits = ARRAY_SIZE(limits_array), \
    297	},\
    298}
    299
    300#define PV88080_HVBUCK(chip, regl_name, min, step, max) \
    301{\
    302	.desc	=	{\
    303		.id = chip##_ID_##regl_name,\
    304		.name = __stringify(chip##_##regl_name),\
    305		.of_match = of_match_ptr(#regl_name),\
    306		.regulators_node = of_match_ptr("regulators"),\
    307		.type = REGULATOR_VOLTAGE,\
    308		.owner = THIS_MODULE,\
    309		.ops = &pv88080_hvbuck_ops,\
    310		.min_uV = min, \
    311		.uV_step = step, \
    312		.n_voltages = ((max) - (min))/(step) + 1, \
    313	},\
    314}
    315
    316static struct pv88080_regulator pv88080_regulator_info[] = {
    317	PV88080_BUCK(PV88080, BUCK1, 600000, 6250, 1393750,
    318		pv88080_buck1_limits),
    319	PV88080_BUCK(PV88080, BUCK2, 600000, 6250, 1393750,
    320		pv88080_buck23_limits),
    321	PV88080_BUCK(PV88080, BUCK3, 600000, 6250, 1393750,
    322		pv88080_buck23_limits),
    323	PV88080_HVBUCK(PV88080, HVBUCK, 0, 5000, 1275000),
    324};
    325
    326static irqreturn_t pv88080_irq_handler(int irq, void *data)
    327{
    328	struct pv88080 *chip = data;
    329	int i, reg_val, err, ret = IRQ_NONE;
    330
    331	err = regmap_read(chip->regmap, PV88080_REG_EVENT_A, &reg_val);
    332	if (err < 0)
    333		goto error_i2c;
    334
    335	if (reg_val & PV88080_E_VDD_FLT) {
    336		for (i = 0; i < PV88080_MAX_REGULATORS; i++) {
    337			if (chip->rdev[i] != NULL)
    338				regulator_notifier_call_chain(chip->rdev[i],
    339					REGULATOR_EVENT_UNDER_VOLTAGE,
    340					NULL);
    341		}
    342
    343		err = regmap_write(chip->regmap, PV88080_REG_EVENT_A,
    344			PV88080_E_VDD_FLT);
    345		if (err < 0)
    346			goto error_i2c;
    347
    348		ret = IRQ_HANDLED;
    349	}
    350
    351	if (reg_val & PV88080_E_OVER_TEMP) {
    352		for (i = 0; i < PV88080_MAX_REGULATORS; i++) {
    353			if (chip->rdev[i] != NULL)
    354				regulator_notifier_call_chain(chip->rdev[i],
    355					REGULATOR_EVENT_OVER_TEMP,
    356					NULL);
    357		}
    358
    359		err = regmap_write(chip->regmap, PV88080_REG_EVENT_A,
    360			PV88080_E_OVER_TEMP);
    361		if (err < 0)
    362			goto error_i2c;
    363
    364		ret = IRQ_HANDLED;
    365	}
    366
    367	return ret;
    368
    369error_i2c:
    370	dev_err(chip->dev, "I2C error : %d\n", err);
    371	return IRQ_NONE;
    372}
    373
    374/*
    375 * I2C driver interface functions
    376 */
    377static int pv88080_i2c_probe(struct i2c_client *i2c,
    378		const struct i2c_device_id *id)
    379{
    380	struct regulator_init_data *init_data = dev_get_platdata(&i2c->dev);
    381	struct pv88080 *chip;
    382	const struct pv88080_compatible_regmap *regmap_config;
    383	const struct of_device_id *match;
    384	struct regulator_config config = { };
    385	int i, error, ret;
    386	unsigned int conf2, conf5;
    387
    388	chip = devm_kzalloc(&i2c->dev, sizeof(struct pv88080), GFP_KERNEL);
    389	if (!chip)
    390		return -ENOMEM;
    391
    392	chip->dev = &i2c->dev;
    393	chip->regmap = devm_regmap_init_i2c(i2c, &pv88080_regmap_config);
    394	if (IS_ERR(chip->regmap)) {
    395		error = PTR_ERR(chip->regmap);
    396		dev_err(chip->dev, "Failed to allocate register map: %d\n",
    397			error);
    398		return error;
    399	}
    400
    401	if (i2c->dev.of_node) {
    402		match = of_match_node(pv88080_dt_ids, i2c->dev.of_node);
    403		if (!match) {
    404			dev_err(chip->dev, "Failed to get of_match_node\n");
    405			return -EINVAL;
    406		}
    407		chip->type = (unsigned long)match->data;
    408	} else {
    409		chip->type = id->driver_data;
    410	}
    411
    412	i2c_set_clientdata(i2c, chip);
    413
    414	if (i2c->irq != 0) {
    415		ret = regmap_write(chip->regmap, PV88080_REG_MASK_A, 0xFF);
    416		if (ret < 0) {
    417			dev_err(chip->dev,
    418				"Failed to mask A reg: %d\n", ret);
    419			return ret;
    420		}
    421		ret = regmap_write(chip->regmap, PV88080_REG_MASK_B, 0xFF);
    422		if (ret < 0) {
    423			dev_err(chip->dev,
    424				"Failed to mask B reg: %d\n", ret);
    425			return ret;
    426		}
    427		ret = regmap_write(chip->regmap, PV88080_REG_MASK_C, 0xFF);
    428		if (ret < 0) {
    429			dev_err(chip->dev,
    430				"Failed to mask C reg: %d\n", ret);
    431			return ret;
    432		}
    433
    434		ret = devm_request_threaded_irq(&i2c->dev, i2c->irq, NULL,
    435					pv88080_irq_handler,
    436					IRQF_TRIGGER_LOW|IRQF_ONESHOT,
    437					"pv88080", chip);
    438		if (ret != 0) {
    439			dev_err(chip->dev, "Failed to request IRQ: %d\n",
    440				i2c->irq);
    441			return ret;
    442		}
    443
    444		ret = regmap_update_bits(chip->regmap, PV88080_REG_MASK_A,
    445			PV88080_M_VDD_FLT | PV88080_M_OVER_TEMP, 0);
    446		if (ret < 0) {
    447			dev_err(chip->dev,
    448				"Failed to update mask reg: %d\n", ret);
    449			return ret;
    450		}
    451	} else {
    452		dev_warn(chip->dev, "No IRQ configured\n");
    453	}
    454
    455	switch (chip->type) {
    456	case TYPE_PV88080_AA:
    457		chip->regmap_config = &pv88080_aa_regs;
    458		break;
    459	case TYPE_PV88080_BA:
    460		chip->regmap_config = &pv88080_ba_regs;
    461		break;
    462	}
    463
    464	regmap_config = chip->regmap_config;
    465	config.dev = chip->dev;
    466	config.regmap = chip->regmap;
    467
    468	/* Registeration for BUCK1, 2, 3 */
    469	for (i = 0; i < PV88080_MAX_REGULATORS-1; i++) {
    470		if (init_data)
    471			config.init_data = &init_data[i];
    472
    473		pv88080_regulator_info[i].desc.csel_reg
    474			= regmap_config->buck_regmap[i].buck_limit_reg;
    475		pv88080_regulator_info[i].desc.csel_mask
    476			= regmap_config->buck_regmap[i].buck_limit_mask;
    477		pv88080_regulator_info[i].mode_reg
    478			= regmap_config->buck_regmap[i].buck_mode_reg;
    479		pv88080_regulator_info[i].conf2
    480			= regmap_config->buck_regmap[i].buck_vdac_range_reg;
    481		pv88080_regulator_info[i].conf5
    482			= regmap_config->buck_regmap[i].buck_vrange_gain_reg;
    483		pv88080_regulator_info[i].desc.enable_reg
    484			= regmap_config->buck_regmap[i].buck_enable_reg;
    485		pv88080_regulator_info[i].desc.enable_mask
    486			= regmap_config->buck_regmap[i].buck_enable_mask;
    487		pv88080_regulator_info[i].desc.vsel_reg
    488			= regmap_config->buck_regmap[i].buck_vsel_reg;
    489		pv88080_regulator_info[i].desc.vsel_mask
    490			= regmap_config->buck_regmap[i].buck_vsel_mask;
    491
    492		ret = regmap_read(chip->regmap,
    493				pv88080_regulator_info[i].conf2, &conf2);
    494		if (ret < 0)
    495			return ret;
    496		conf2 = ((conf2 >> PV88080_BUCK_VDAC_RANGE_SHIFT) &
    497			PV88080_BUCK_VDAC_RANGE_MASK);
    498
    499		ret = regmap_read(chip->regmap,
    500				pv88080_regulator_info[i].conf5, &conf5);
    501		if (ret < 0)
    502			return ret;
    503		conf5 = ((conf5 >> PV88080_BUCK_VRANGE_GAIN_SHIFT) &
    504			PV88080_BUCK_VRANGE_GAIN_MASK);
    505
    506		pv88080_regulator_info[i].desc.min_uV =
    507			pv88080_buck_vol[conf2].min_uV * (conf5+1);
    508		pv88080_regulator_info[i].desc.uV_step =
    509			pv88080_buck_vol[conf2].uV_step * (conf5+1);
    510		pv88080_regulator_info[i].desc.n_voltages =
    511			((pv88080_buck_vol[conf2].max_uV * (conf5+1))
    512			- (pv88080_regulator_info[i].desc.min_uV))
    513			/(pv88080_regulator_info[i].desc.uV_step) + 1;
    514
    515		config.driver_data = (void *)&pv88080_regulator_info[i];
    516		chip->rdev[i] = devm_regulator_register(chip->dev,
    517			&pv88080_regulator_info[i].desc, &config);
    518		if (IS_ERR(chip->rdev[i])) {
    519			dev_err(chip->dev,
    520				"Failed to register PV88080 regulator\n");
    521			return PTR_ERR(chip->rdev[i]);
    522		}
    523	}
    524
    525	pv88080_regulator_info[PV88080_ID_HVBUCK].desc.enable_reg
    526		= regmap_config->hvbuck_enable_reg;
    527	pv88080_regulator_info[PV88080_ID_HVBUCK].desc.enable_mask
    528		= regmap_config->hvbuck_enable_mask;
    529	pv88080_regulator_info[PV88080_ID_HVBUCK].desc.vsel_reg
    530		= regmap_config->hvbuck_vsel_reg;
    531	pv88080_regulator_info[PV88080_ID_HVBUCK].desc.vsel_mask
    532		= regmap_config->hvbuck_vsel_mask;
    533
    534	/* Registeration for HVBUCK */
    535	if (init_data)
    536		config.init_data = &init_data[PV88080_ID_HVBUCK];
    537
    538	config.driver_data = (void *)&pv88080_regulator_info[PV88080_ID_HVBUCK];
    539	chip->rdev[PV88080_ID_HVBUCK] = devm_regulator_register(chip->dev,
    540		&pv88080_regulator_info[PV88080_ID_HVBUCK].desc, &config);
    541	if (IS_ERR(chip->rdev[PV88080_ID_HVBUCK])) {
    542		dev_err(chip->dev, "Failed to register PV88080 regulator\n");
    543		return PTR_ERR(chip->rdev[PV88080_ID_HVBUCK]);
    544	}
    545
    546	return 0;
    547}
    548
    549static const struct i2c_device_id pv88080_i2c_id[] = {
    550	{ "pv88080",    TYPE_PV88080_AA },
    551	{ "pv88080-aa", TYPE_PV88080_AA },
    552	{ "pv88080-ba", TYPE_PV88080_BA },
    553	{},
    554};
    555MODULE_DEVICE_TABLE(i2c, pv88080_i2c_id);
    556
    557static struct i2c_driver pv88080_regulator_driver = {
    558	.driver = {
    559		.name = "pv88080",
    560		.of_match_table = of_match_ptr(pv88080_dt_ids),
    561	},
    562	.probe = pv88080_i2c_probe,
    563	.id_table = pv88080_i2c_id,
    564};
    565
    566module_i2c_driver(pv88080_regulator_driver);
    567
    568MODULE_AUTHOR("James Ban <James.Ban.opensource@diasemi.com>");
    569MODULE_DESCRIPTION("Regulator device driver for Powerventure PV88080");
    570MODULE_LICENSE("GPL");