[mirror_ubuntu-hirsute-kernel.git] / drivers / mfd / qcom-spmi-pmic.c

// SPDX-License-Identifier: GPL-2.0-only
/*
 * Copyright (c) 2014, The Linux Foundation. All rights reserved.
 */

#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/spmi.h>
#include <linux/regmap.h>
#include <linux/of_platform.h>

#define PMIC_REV2		0x101
#define PMIC_REV3		0x102
#define PMIC_REV4		0x103
#define PMIC_TYPE		0x104
#define PMIC_SUBTYPE		0x105

#define PMIC_TYPE_VALUE		0x51

#define COMMON_SUBTYPE		0x00
#define PM8941_SUBTYPE		0x01
#define PM8841_SUBTYPE		0x02
#define PM8019_SUBTYPE		0x03
#define PM8226_SUBTYPE		0x04
#define PM8110_SUBTYPE		0x05
#define PMA8084_SUBTYPE		0x06
#define PMI8962_SUBTYPE		0x07
#define PMD9635_SUBTYPE		0x08
#define PM8994_SUBTYPE		0x09
#define PMI8994_SUBTYPE		0x0a
#define PM8916_SUBTYPE		0x0b
#define PM8004_SUBTYPE		0x0c
#define PM8909_SUBTYPE		0x0d
#define PM8950_SUBTYPE		0x10
#define PMI8950_SUBTYPE		0x11
#define PM8998_SUBTYPE		0x14
#define PMI8998_SUBTYPE		0x15
#define PM8005_SUBTYPE		0x18

static const struct of_device_id pmic_spmi_id_table[] = {
	{ .compatible = "qcom,spmi-pmic", .data = (void *)COMMON_SUBTYPE },
	{ .compatible = "qcom,pm8941",    .data = (void *)PM8941_SUBTYPE },
	{ .compatible = "qcom,pm8841",    .data = (void *)PM8841_SUBTYPE },
	{ .compatible = "qcom,pm8019",    .data = (void *)PM8019_SUBTYPE },
	{ .compatible = "qcom,pm8226",    .data = (void *)PM8226_SUBTYPE },
	{ .compatible = "qcom,pm8110",    .data = (void *)PM8110_SUBTYPE },
	{ .compatible = "qcom,pma8084",   .data = (void *)PMA8084_SUBTYPE },
	{ .compatible = "qcom,pmi8962",   .data = (void *)PMI8962_SUBTYPE },
	{ .compatible = "qcom,pmd9635",   .data = (void *)PMD9635_SUBTYPE },
	{ .compatible = "qcom,pm8994",    .data = (void *)PM8994_SUBTYPE },
	{ .compatible = "qcom,pmi8994",   .data = (void *)PMI8994_SUBTYPE },
	{ .compatible = "qcom,pm8916",    .data = (void *)PM8916_SUBTYPE },
	{ .compatible = "qcom,pm8004",    .data = (void *)PM8004_SUBTYPE },
	{ .compatible = "qcom,pm8909",    .data = (void *)PM8909_SUBTYPE },
	{ .compatible = "qcom,pm8950",    .data = (void *)PM8950_SUBTYPE },
	{ .compatible = "qcom,pmi8950",   .data = (void *)PMI8950_SUBTYPE },
	{ .compatible = "qcom,pm8998",    .data = (void *)PM8998_SUBTYPE },
	{ .compatible = "qcom,pmi8998",   .data = (void *)PMI8998_SUBTYPE },
	{ .compatible = "qcom,pm8005",    .data = (void *)PM8005_SUBTYPE },
	{ }
};

static void pmic_spmi_show_revid(struct regmap *map, struct device *dev)
{
	unsigned int rev2, minor, major, type, subtype;
	const char *name = "unknown";
	int ret, i;

	ret = regmap_read(map, PMIC_TYPE, &type);
	if (ret < 0)
		return;

	if (type != PMIC_TYPE_VALUE)
		return;

	ret = regmap_read(map, PMIC_SUBTYPE, &subtype);
	if (ret < 0)
		return;

	for (i = 0; i < ARRAY_SIZE(pmic_spmi_id_table); i++) {
		if (subtype == (unsigned long)pmic_spmi_id_table[i].data)
			break;
	}

	if (i != ARRAY_SIZE(pmic_spmi_id_table))
		name = pmic_spmi_id_table[i].compatible;

	ret = regmap_read(map, PMIC_REV2, &rev2);
	if (ret < 0)
		return;

	ret = regmap_read(map, PMIC_REV3, &minor);
	if (ret < 0)
		return;

	ret = regmap_read(map, PMIC_REV4, &major);
	if (ret < 0)
		return;

	/*
	 * In early versions of PM8941 and PM8226, the major revision number
	 * started incrementing from 0 (eg 0 = v1.0, 1 = v2.0).
	 * Increment the major revision number here if the chip is an early
	 * version of PM8941 or PM8226.
	 */
	if ((subtype == PM8941_SUBTYPE || subtype == PM8226_SUBTYPE) &&
	    major < 0x02)
		major++;

	if (subtype == PM8110_SUBTYPE)
		minor = rev2;

	dev_dbg(dev, "%x: %s v%d.%d\n", subtype, name, major, minor);
}

static const struct regmap_config spmi_regmap_config = {
	.reg_bits	= 16,
	.val_bits	= 8,
	.max_register	= 0xffff,
	.fast_io	= true,
};

static int pmic_spmi_probe(struct spmi_device *sdev)
{
	struct regmap *regmap;

	regmap = devm_regmap_init_spmi_ext(sdev, &spmi_regmap_config);
	if (IS_ERR(regmap))
		return PTR_ERR(regmap);

	/* Only the first slave id for a PMIC contains this information */
	if (sdev->usid % 2 == 0)
		pmic_spmi_show_revid(regmap, &sdev->dev);

	return devm_of_platform_populate(&sdev->dev);
}

MODULE_DEVICE_TABLE(of, pmic_spmi_id_table);

static struct spmi_driver pmic_spmi_driver = {
	.probe = pmic_spmi_probe,
	.driver = {
		.name = "pmic-spmi",
		.of_match_table = pmic_spmi_id_table,
	},
};
module_spmi_driver(pmic_spmi_driver);

MODULE_DESCRIPTION("Qualcomm SPMI PMIC driver");
MODULE_ALIAS("spmi:spmi-pmic");
MODULE_LICENSE("GPL v2");
MODULE_AUTHOR("Josh Cartwright <joshc@codeaurora.org>");
MODULE_AUTHOR("Stanimir Varbanov <svarbanov@mm-sol.com>");
Commit	Line	Data
97fb5e8d	1	// SPDX-License-Identifier: GPL-2.0-only
c3a973a7 JC	2	/*
c3a973a7 JC	3	* Copyright (c) 2014, The Linux Foundation. All rights reserved.
c3a973a7 JC	4	*/
	5
	6	#include <linux/kernel.h>
	7	#include <linux/module.h>
	8	#include <linux/spmi.h>
	9	#include <linux/regmap.h>
	10	#include <linux/of_platform.h>
	11
dc716bbf II	12	#define PMIC_REV2 0x101
	13	#define PMIC_REV3 0x102
	14	#define PMIC_REV4 0x103
	15	#define PMIC_TYPE 0x104
	16	#define PMIC_SUBTYPE 0x105
	17
	18	#define PMIC_TYPE_VALUE 0x51
	19
	20	#define COMMON_SUBTYPE 0x00
	21	#define PM8941_SUBTYPE 0x01
	22	#define PM8841_SUBTYPE 0x02
	23	#define PM8019_SUBTYPE 0x03
	24	#define PM8226_SUBTYPE 0x04
	25	#define PM8110_SUBTYPE 0x05
	26	#define PMA8084_SUBTYPE 0x06
	27	#define PMI8962_SUBTYPE 0x07
	28	#define PMD9635_SUBTYPE 0x08
	29	#define PM8994_SUBTYPE 0x09
	30	#define PMI8994_SUBTYPE 0x0a
	31	#define PM8916_SUBTYPE 0x0b
	32	#define PM8004_SUBTYPE 0x0c
	33	#define PM8909_SUBTYPE 0x0d
f5b4c8b4 ADR	34	#define PM8950_SUBTYPE 0x10
f5b4c8b4 ADR	35	#define PMI8950_SUBTYPE 0x11
c04da893 SB	36	#define PM8998_SUBTYPE 0x14
	37	#define PMI8998_SUBTYPE 0x15
	38	#define PM8005_SUBTYPE 0x18
dc716bbf II	39
	40	static const struct of_device_id pmic_spmi_id_table[] = {
	41	{ .compatible = "qcom,spmi-pmic", .data = (void *)COMMON_SUBTYPE },
	42	{ .compatible = "qcom,pm8941", .data = (void *)PM8941_SUBTYPE },
	43	{ .compatible = "qcom,pm8841", .data = (void *)PM8841_SUBTYPE },
	44	{ .compatible = "qcom,pm8019", .data = (void *)PM8019_SUBTYPE },
	45	{ .compatible = "qcom,pm8226", .data = (void *)PM8226_SUBTYPE },
	46	{ .compatible = "qcom,pm8110", .data = (void *)PM8110_SUBTYPE },
	47	{ .compatible = "qcom,pma8084", .data = (void *)PMA8084_SUBTYPE },
	48	{ .compatible = "qcom,pmi8962", .data = (void *)PMI8962_SUBTYPE },
	49	{ .compatible = "qcom,pmd9635", .data = (void *)PMD9635_SUBTYPE },
	50	{ .compatible = "qcom,pm8994", .data = (void *)PM8994_SUBTYPE },
	51	{ .compatible = "qcom,pmi8994", .data = (void *)PMI8994_SUBTYPE },
	52	{ .compatible = "qcom,pm8916", .data = (void *)PM8916_SUBTYPE },
	53	{ .compatible = "qcom,pm8004", .data = (void *)PM8004_SUBTYPE },
	54	{ .compatible = "qcom,pm8909", .data = (void *)PM8909_SUBTYPE },
f5b4c8b4 ADR	55	{ .compatible = "qcom,pm8950", .data = (void *)PM8950_SUBTYPE },
f5b4c8b4 ADR	56	{ .compatible = "qcom,pmi8950", .data = (void *)PMI8950_SUBTYPE },
c04da893 SB	57	{ .compatible = "qcom,pm8998", .data = (void *)PM8998_SUBTYPE },
	58	{ .compatible = "qcom,pmi8998", .data = (void *)PMI8998_SUBTYPE },
	59	{ .compatible = "qcom,pm8005", .data = (void *)PM8005_SUBTYPE },
dc716bbf II	60	{ }
	61	};
	62
	63	static void pmic_spmi_show_revid(struct regmap map, struct device dev)
	64	{
	65	unsigned int rev2, minor, major, type, subtype;
	66	const char *name = "unknown";
	67	int ret, i;
	68
	69	ret = regmap_read(map, PMIC_TYPE, &type);
	70	if (ret < 0)
	71	return;
	72
	73	if (type != PMIC_TYPE_VALUE)
	74	return;
	75
	76	ret = regmap_read(map, PMIC_SUBTYPE, &subtype);
	77	if (ret < 0)
	78	return;
	79
	80	for (i = 0; i < ARRAY_SIZE(pmic_spmi_id_table); i++) {
	81	if (subtype == (unsigned long)pmic_spmi_id_table[i].data)
	82	break;
	83	}
	84
	85	if (i != ARRAY_SIZE(pmic_spmi_id_table))
	86	name = pmic_spmi_id_table[i].compatible;
	87
	88	ret = regmap_read(map, PMIC_REV2, &rev2);
	89	if (ret < 0)
	90	return;
	91
	92	ret = regmap_read(map, PMIC_REV3, &minor);
	93	if (ret < 0)
	94	return;
	95
	96	ret = regmap_read(map, PMIC_REV4, &major);
	97	if (ret < 0)
	98	return;
	99
	100	/*
	101	* In early versions of PM8941 and PM8226, the major revision number
	102	* started incrementing from 0 (eg 0 = v1.0, 1 = v2.0).
	103	* Increment the major revision number here if the chip is an early
	104	* version of PM8941 or PM8226.
	105	*/
	106	if ((subtype == PM8941_SUBTYPE \|\| subtype == PM8226_SUBTYPE) &&
	107	major < 0x02)
	108	major++;
	109
	110	if (subtype == PM8110_SUBTYPE)
	111	minor = rev2;
	112
	113	dev_dbg(dev, "%x: %s v%d.%d\n", subtype, name, major, minor);
	114	}
	115
c3a973a7 JC	116	static const struct regmap_config spmi_regmap_config = {
	117	.reg_bits = 16,
	118	.val_bits = 8,
	119	.max_register = 0xffff,
	120	.fast_io = true,
	121	};
	122
	123	static int pmic_spmi_probe(struct spmi_device *sdev)
	124	{
c3a973a7 JC	125	struct regmap *regmap;
	126
	127	regmap = devm_regmap_init_spmi_ext(sdev, &spmi_regmap_config);
	128	if (IS_ERR(regmap))
	129	return PTR_ERR(regmap);
	130
742dcd11 II	131	/* Only the first slave id for a PMIC contains this information */
	132	if (sdev->usid % 2 == 0)
	133	pmic_spmi_show_revid(regmap, &sdev->dev);
dc716bbf	134
6f00f8c8	135	return devm_of_platform_populate(&sdev->dev);
c3a973a7 JC	136	}
c3a973a7 JC	137
c3a973a7 JC	138	MODULE_DEVICE_TABLE(of, pmic_spmi_id_table);
	139
	140	static struct spmi_driver pmic_spmi_driver = {
	141	.probe = pmic_spmi_probe,
c3a973a7 JC	142	.driver = {
	143	.name = "pmic-spmi",
	144	.of_match_table = pmic_spmi_id_table,
	145	},
	146	};
	147	module_spmi_driver(pmic_spmi_driver);
	148
	149	MODULE_DESCRIPTION("Qualcomm SPMI PMIC driver");
	150	MODULE_ALIAS("spmi:spmi-pmic");
	151	MODULE_LICENSE("GPL v2");
	152	MODULE_AUTHOR("Josh Cartwright <joshc@codeaurora.org>");
	153	MODULE_AUTHOR("Stanimir Varbanov <svarbanov@mm-sol.com>");