[linux.git] / drivers / mfd / tps65086.c

// SPDX-License-Identifier: GPL-2.0-only
/*
 * Copyright (C) 2015 Texas Instruments Incorporated - https://www.ti.com/
 *	Andrew F. Davis <[email protected]>
 *
 * Based on the TPS65912 driver
 */

#include <linux/i2c.h>
#include <linux/interrupt.h>
#include <linux/mfd/core.h>
#include <linux/module.h>

#include <linux/mfd/tps65086.h>

static const struct mfd_cell tps65086_cells[] = {
	{ .name = "tps65086-regulator", },
	{ .name = "tps65086-gpio", },
	{ .name = "tps65086-reset", },
};

static const struct regmap_range tps65086_yes_ranges[] = {
	regmap_reg_range(TPS65086_IRQ, TPS65086_IRQ),
	regmap_reg_range(TPS65086_PMICSTAT, TPS65086_SHUTDNSRC),
	regmap_reg_range(TPS65086_GPOCTRL, TPS65086_GPOCTRL),
	regmap_reg_range(TPS65086_PG_STATUS1, TPS65086_OC_STATUS),
};

static const struct regmap_access_table tps65086_volatile_table = {
	.yes_ranges = tps65086_yes_ranges,
	.n_yes_ranges = ARRAY_SIZE(tps65086_yes_ranges),
};

static const struct regmap_config tps65086_regmap_config = {
	.reg_bits = 8,
	.val_bits = 8,
	.cache_type = REGCACHE_MAPLE,
	.volatile_table = &tps65086_volatile_table,
};

static const struct regmap_irq tps65086_irqs[] = {
	REGMAP_IRQ_REG(TPS65086_IRQ_DIETEMP, 0, TPS65086_IRQ_DIETEMP_MASK),
	REGMAP_IRQ_REG(TPS65086_IRQ_SHUTDN, 0, TPS65086_IRQ_SHUTDN_MASK),
	REGMAP_IRQ_REG(TPS65086_IRQ_FAULT, 0, TPS65086_IRQ_FAULT_MASK),
};

static struct regmap_irq_chip tps65086_irq_chip = {
	.name = "tps65086",
	.status_base = TPS65086_IRQ,
	.mask_base = TPS65086_IRQ_MASK,
	.ack_base = TPS65086_IRQ,
	.init_ack_masked = true,
	.num_regs = 1,
	.irqs = tps65086_irqs,
	.num_irqs = ARRAY_SIZE(tps65086_irqs),
};

static const struct of_device_id tps65086_of_match_table[] = {
	{ .compatible = "ti,tps65086", },
	{ /* sentinel */ }
};
MODULE_DEVICE_TABLE(of, tps65086_of_match_table);

static int tps65086_probe(struct i2c_client *client)
{
	struct tps65086 *tps;
	unsigned int version;
	int ret;

	tps = devm_kzalloc(&client->dev, sizeof(*tps), GFP_KERNEL);
	if (!tps)
		return -ENOMEM;

	i2c_set_clientdata(client, tps);
	tps->dev = &client->dev;
	tps->irq = client->irq;

	tps->regmap = devm_regmap_init_i2c(client, &tps65086_regmap_config);
	if (IS_ERR(tps->regmap)) {
		dev_err(tps->dev, "Failed to initialize register map\n");
		return PTR_ERR(tps->regmap);
	}

	/* Store device ID to load regulator configuration that fit to IC variant */
	ret = regmap_read(tps->regmap, TPS65086_DEVICEID1, &tps->chip_id);
	if (ret) {
		dev_err(tps->dev, "Failed to read revision register 1\n");
		return ret;
	}

	ret = regmap_read(tps->regmap, TPS65086_DEVICEID2, &version);
	if (ret) {
		dev_err(tps->dev, "Failed to read revision register 2\n");
		return ret;
	}

	dev_info(tps->dev, "Device: TPS65086%01lX, OTP: %c, Rev: %ld\n",
		 (version & TPS65086_DEVICEID2_PART_MASK),
		 (char)((version & TPS65086_DEVICEID2_OTP_MASK) >> 4) + 'A',
		 (version & TPS65086_DEVICEID2_REV_MASK) >> 6);

	if (tps->irq > 0) {
		ret = regmap_add_irq_chip(tps->regmap, tps->irq, IRQF_ONESHOT, 0,
					  &tps65086_irq_chip, &tps->irq_data);
		if (ret) {
			dev_err(tps->dev, "Failed to register IRQ chip\n");
			return ret;
		}
	}

	ret = mfd_add_devices(tps->dev, PLATFORM_DEVID_AUTO, tps65086_cells,
			      ARRAY_SIZE(tps65086_cells), NULL, 0,
			      regmap_irq_get_domain(tps->irq_data));
	if (ret && tps->irq > 0)
		regmap_del_irq_chip(tps->irq, tps->irq_data);

	return ret;
}

static void tps65086_remove(struct i2c_client *client)
{
	struct tps65086 *tps = i2c_get_clientdata(client);

	if (tps->irq > 0)
		regmap_del_irq_chip(tps->irq, tps->irq_data);
}

static const struct i2c_device_id tps65086_id_table[] = {
	{ "tps65086", 0 },
	{ /* sentinel */ }
};
MODULE_DEVICE_TABLE(i2c, tps65086_id_table);

static struct i2c_driver tps65086_driver = {
	.driver		= {
		.name	= "tps65086",
		.of_match_table = tps65086_of_match_table,
	},
	.probe		= tps65086_probe,
	.remove		= tps65086_remove,
	.id_table       = tps65086_id_table,
};
module_i2c_driver(tps65086_driver);

MODULE_AUTHOR("Andrew F. Davis <[email protected]>");
MODULE_DESCRIPTION("TPS65086 PMIC Driver");
MODULE_LICENSE("GPL v2");
Commit	Line	Data
abd46274	1	// SPDX-License-Identifier: GPL-2.0-only
b45b719e	2	/*
4f4ed454	3	* Copyright (C) 2015 Texas Instruments Incorporated - https://www.ti.com/
b45b719e AD	4	* Andrew F. Davis <[email protected]>
b45b719e AD	5	*
b45b719e AD	6	* Based on the TPS65912 driver
	7	*/
	8
	9	#include <linux/i2c.h>
	10	#include <linux/interrupt.h>
	11	#include <linux/mfd/core.h>
	12	#include <linux/module.h>
	13
	14	#include <linux/mfd/tps65086.h>
	15
	16	static const struct mfd_cell tps65086_cells[] = {
	17	{ .name = "tps65086-regulator", },
	18	{ .name = "tps65086-gpio", },
72b89b9a	19	{ .name = "tps65086-reset", },
b45b719e AD	20	};
	21
	22	static const struct regmap_range tps65086_yes_ranges[] = {
	23	regmap_reg_range(TPS65086_IRQ, TPS65086_IRQ),
	24	regmap_reg_range(TPS65086_PMICSTAT, TPS65086_SHUTDNSRC),
	25	regmap_reg_range(TPS65086_GPOCTRL, TPS65086_GPOCTRL),
	26	regmap_reg_range(TPS65086_PG_STATUS1, TPS65086_OC_STATUS),
	27	};
	28
	29	static const struct regmap_access_table tps65086_volatile_table = {
	30	.yes_ranges = tps65086_yes_ranges,
	31	.n_yes_ranges = ARRAY_SIZE(tps65086_yes_ranges),
	32	};
	33
	34	static const struct regmap_config tps65086_regmap_config = {
	35	.reg_bits = 8,
	36	.val_bits = 8,
6917c333	37	.cache_type = REGCACHE_MAPLE,
b45b719e AD	38	.volatile_table = &tps65086_volatile_table,
	39	};
	40
	41	static const struct regmap_irq tps65086_irqs[] = {
	42	REGMAP_IRQ_REG(TPS65086_IRQ_DIETEMP, 0, TPS65086_IRQ_DIETEMP_MASK),
	43	REGMAP_IRQ_REG(TPS65086_IRQ_SHUTDN, 0, TPS65086_IRQ_SHUTDN_MASK),
	44	REGMAP_IRQ_REG(TPS65086_IRQ_FAULT, 0, TPS65086_IRQ_FAULT_MASK),
	45	};
	46
	47	static struct regmap_irq_chip tps65086_irq_chip = {
	48	.name = "tps65086",
	49	.status_base = TPS65086_IRQ,
	50	.mask_base = TPS65086_IRQ_MASK,
	51	.ack_base = TPS65086_IRQ,
	52	.init_ack_masked = true,
	53	.num_regs = 1,
	54	.irqs = tps65086_irqs,
	55	.num_irqs = ARRAY_SIZE(tps65086_irqs),
	56	};
	57
	58	static const struct of_device_id tps65086_of_match_table[] = {
	59	{ .compatible = "ti,tps65086", },
	60	{ /* sentinel */ }
	61	};
	62	MODULE_DEVICE_TABLE(of, tps65086_of_match_table);
	63
1f662faa	64	static int tps65086_probe(struct i2c_client *client)
b45b719e AD	65	{
	66	struct tps65086 *tps;
	67	unsigned int version;
	68	int ret;
	69
	70	tps = devm_kzalloc(&client->dev, sizeof(*tps), GFP_KERNEL);
	71	if (!tps)
	72	return -ENOMEM;
	73
	74	i2c_set_clientdata(client, tps);
	75	tps->dev = &client->dev;
	76	tps->irq = client->irq;
	77
	78	tps->regmap = devm_regmap_init_i2c(client, &tps65086_regmap_config);
	79	if (IS_ERR(tps->regmap)) {
	80	dev_err(tps->dev, "Failed to initialize register map\n");
	81	return PTR_ERR(tps->regmap);
	82	}
	83
c0146735 AW	84	/* Store device ID to load regulator configuration that fit to IC variant */
c0146735 AW	85	ret = regmap_read(tps->regmap, TPS65086_DEVICEID1, &tps->chip_id);
b45b719e	86	if (ret) {
c0146735 AW	87	dev_err(tps->dev, "Failed to read revision register 1\n");
	88	return ret;
	89	}
	90
	91	ret = regmap_read(tps->regmap, TPS65086_DEVICEID2, &version);
	92	if (ret) {
	93	dev_err(tps->dev, "Failed to read revision register 2\n");
b45b719e AD	94	return ret;
	95	}
	96
	97	dev_info(tps->dev, "Device: TPS65086%01lX, OTP: %c, Rev: %ld\n",
c0146735 AW	98	(version & TPS65086_DEVICEID2_PART_MASK),
	99	(char)((version & TPS65086_DEVICEID2_OTP_MASK) >> 4) + 'A',
	100	(version & TPS65086_DEVICEID2_REV_MASK) >> 6);
b45b719e	101
e06f4abb ERB	102	if (tps->irq > 0) {
	103	ret = regmap_add_irq_chip(tps->regmap, tps->irq, IRQF_ONESHOT, 0,
	104	&tps65086_irq_chip, &tps->irq_data);
	105	if (ret) {
	106	dev_err(tps->dev, "Failed to register IRQ chip\n");
	107	return ret;
	108	}
b45b719e AD	109	}
	110
	111	ret = mfd_add_devices(tps->dev, PLATFORM_DEVID_AUTO, tps65086_cells,
	112	ARRAY_SIZE(tps65086_cells), NULL, 0,
	113	regmap_irq_get_domain(tps->irq_data));
e06f4abb	114	if (ret && tps->irq > 0)
b45b719e	115	regmap_del_irq_chip(tps->irq, tps->irq_data);
b45b719e	116
e06f4abb	117	return ret;
b45b719e AD	118	}
b45b719e AD	119
ed5c2f5f	120	static void tps65086_remove(struct i2c_client *client)
b45b719e AD	121	{
	122	struct tps65086 *tps = i2c_get_clientdata(client);
	123
e06f4abb ERB	124	if (tps->irq > 0)
e06f4abb ERB	125	regmap_del_irq_chip(tps->irq, tps->irq_data);
b45b719e AD	126	}
	127
	128	static const struct i2c_device_id tps65086_id_table[] = {
	129	{ "tps65086", 0 },
	130	{ /* sentinel */ }
	131	};
	132	MODULE_DEVICE_TABLE(i2c, tps65086_id_table);
	133
	134	static struct i2c_driver tps65086_driver = {
	135	.driver = {
	136	.name = "tps65086",
	137	.of_match_table = tps65086_of_match_table,
	138	},
9816d859	139	.probe = tps65086_probe,
b45b719e AD	140	.remove = tps65086_remove,
	141	.id_table = tps65086_id_table,
	142	};
	143	module_i2c_driver(tps65086_driver);
	144
	145	MODULE_AUTHOR("Andrew F. Davis <[email protected]>");
	146	MODULE_DESCRIPTION("TPS65086 PMIC Driver");
	147	MODULE_LICENSE("GPL v2");