[mirror_ubuntu-hirsute-kernel.git] / drivers / mfd / arizona-spi.c

// SPDX-License-Identifier: GPL-2.0-only
/*
 * arizona-spi.c  --  Arizona SPI bus interface
 *
 * Copyright 2012 Wolfson Microelectronics plc
 *
 * Author: Mark Brown <broonie@opensource.wolfsonmicro.com>
 */

#include <linux/err.h>
#include <linux/module.h>
#include <linux/pm_runtime.h>
#include <linux/regmap.h>
#include <linux/regulator/consumer.h>
#include <linux/slab.h>
#include <linux/spi/spi.h>
#include <linux/of.h>

#include <linux/mfd/arizona/core.h>

#include "arizona.h"

static int arizona_spi_probe(struct spi_device *spi)
{
	const struct spi_device_id *id = spi_get_device_id(spi);
	struct arizona *arizona;
	const struct regmap_config *regmap_config = NULL;
	unsigned long type;
	int ret;

	if (spi->dev.of_node)
		type = arizona_of_get_type(&spi->dev);
	else
		type = id->driver_data;

	switch (type) {
	case WM5102:
		if (IS_ENABLED(CONFIG_MFD_WM5102))
			regmap_config = &wm5102_spi_regmap;
		break;
	case WM5110:
	case WM8280:
		if (IS_ENABLED(CONFIG_MFD_WM5110))
			regmap_config = &wm5110_spi_regmap;
		break;
	case WM1831:
	case CS47L24:
		if (IS_ENABLED(CONFIG_MFD_CS47L24))
			regmap_config = &cs47l24_spi_regmap;
		break;
	default:
		dev_err(&spi->dev, "Unknown device type %ld\n", type);
		return -EINVAL;
	}

	if (!regmap_config) {
		dev_err(&spi->dev,
			"No kernel support for device type %ld\n", type);
		return -EINVAL;
	}

	arizona = devm_kzalloc(&spi->dev, sizeof(*arizona), GFP_KERNEL);
	if (arizona == NULL)
		return -ENOMEM;

	arizona->regmap = devm_regmap_init_spi(spi, regmap_config);
	if (IS_ERR(arizona->regmap)) {
		ret = PTR_ERR(arizona->regmap);
		dev_err(&spi->dev, "Failed to allocate register map: %d\n",
			ret);
		return ret;
	}

	arizona->type = type;
	arizona->dev = &spi->dev;
	arizona->irq = spi->irq;

	return arizona_dev_init(arizona);
}

static int arizona_spi_remove(struct spi_device *spi)
{
	struct arizona *arizona = spi_get_drvdata(spi);

	arizona_dev_exit(arizona);

	return 0;
}

static const struct spi_device_id arizona_spi_ids[] = {
	{ "wm5102", WM5102 },
	{ "wm5110", WM5110 },
	{ "wm8280", WM8280 },
	{ "wm1831", WM1831 },
	{ "cs47l24", CS47L24 },
	{ },
};
MODULE_DEVICE_TABLE(spi, arizona_spi_ids);

static struct spi_driver arizona_spi_driver = {
	.driver = {
		.name	= "arizona",
		.pm	= &arizona_pm_ops,
		.of_match_table	= of_match_ptr(arizona_of_match),
	},
	.probe		= arizona_spi_probe,
	.remove		= arizona_spi_remove,
	.id_table	= arizona_spi_ids,
};

module_spi_driver(arizona_spi_driver);

MODULE_DESCRIPTION("Arizona SPI bus interface");
MODULE_AUTHOR("Mark Brown <broonie@opensource.wolfsonmicro.com>");
MODULE_LICENSE("GPL");
Commit	Line	Data
d2912cb1	1	// SPDX-License-Identifier: GPL-2.0-only
a15123c7 MB	2	/*
	3	* arizona-spi.c -- Arizona SPI bus interface
	4	*
	5	* Copyright 2012 Wolfson Microelectronics plc
	6	*
	7	* Author: Mark Brown <broonie@opensource.wolfsonmicro.com>
a15123c7 MB	8	*/
	9
	10	#include <linux/err.h>
	11	#include <linux/module.h>
	12	#include <linux/pm_runtime.h>
	13	#include <linux/regmap.h>
	14	#include <linux/regulator/consumer.h>
	15	#include <linux/slab.h>
	16	#include <linux/spi/spi.h>
3d6d1d1c	17	#include <linux/of.h>
a15123c7 MB	18
	19	#include <linux/mfd/arizona/core.h>
	20
	21	#include "arizona.h"
	22
f791be49	23	static int arizona_spi_probe(struct spi_device *spi)
a15123c7 MB	24	{
	25	const struct spi_device_id *id = spi_get_device_id(spi);
	26	struct arizona *arizona;
b61c1ec0	27	const struct regmap_config *regmap_config = NULL;
942786e6 LJ	28	unsigned long type;
942786e6 LJ	29	int ret;
a15123c7	30
d781009c MB	31	if (spi->dev.of_node)
	32	type = arizona_of_get_type(&spi->dev);
	33	else
	34	type = id->driver_data;
	35
	36	switch (type) {
a15123c7	37	case WM5102:
b61c1ec0 RF	38	if (IS_ENABLED(CONFIG_MFD_WM5102))
b61c1ec0 RF	39	regmap_config = &wm5102_spi_regmap;
a15123c7	40	break;
e102befe	41	case WM5110:
e5d4ef0d	42	case WM8280:
b61c1ec0 RF	43	if (IS_ENABLED(CONFIG_MFD_WM5110))
b61c1ec0 RF	44	regmap_config = &wm5110_spi_regmap;
e102befe	45	break;
ea1f3339 RF	46	case WM1831:
	47	case CS47L24:
	48	if (IS_ENABLED(CONFIG_MFD_CS47L24))
	49	regmap_config = &cs47l24_spi_regmap;
	50	break;
a15123c7	51	default:
2e44e28a	52	dev_err(&spi->dev, "Unknown device type %ld\n", type);
a15123c7 MB	53	return -EINVAL;
	54	}
	55
b61c1ec0 RF	56	if (!regmap_config) {
	57	dev_err(&spi->dev,
	58	"No kernel support for device type %ld\n", type);
a15123c7 MB	59	return -EINVAL;
	60	}
	61
	62	arizona = devm_kzalloc(&spi->dev, sizeof(*arizona), GFP_KERNEL);
	63	if (arizona == NULL)
	64	return -ENOMEM;
	65
	66	arizona->regmap = devm_regmap_init_spi(spi, regmap_config);
	67	if (IS_ERR(arizona->regmap)) {
	68	ret = PTR_ERR(arizona->regmap);
	69	dev_err(&spi->dev, "Failed to allocate register map: %d\n",
	70	ret);
	71	return ret;
	72	}
	73
2e44e28a	74	arizona->type = type;
a15123c7 MB	75	arizona->dev = &spi->dev;
	76	arizona->irq = spi->irq;
	77
	78	return arizona_dev_init(arizona);
	79	}
	80
4740f73f	81	static int arizona_spi_remove(struct spi_device *spi)
a15123c7	82	{
e9642d5e	83	struct arizona *arizona = spi_get_drvdata(spi);
6f467e5f	84
a15123c7	85	arizona_dev_exit(arizona);
6f467e5f	86
a15123c7 MB	87	return 0;
	88	}
	89
	90	static const struct spi_device_id arizona_spi_ids[] = {
	91	{ "wm5102", WM5102 },
e102befe	92	{ "wm5110", WM5110 },
e5d4ef0d	93	{ "wm8280", WM8280 },
ea1f3339 RF	94	{ "wm1831", WM1831 },
ea1f3339 RF	95	{ "cs47l24", CS47L24 },
a15123c7 MB	96	{ },
	97	};
	98	MODULE_DEVICE_TABLE(spi, arizona_spi_ids);
	99
	100	static struct spi_driver arizona_spi_driver = {
	101	.driver = {
	102	.name = "arizona",
a15123c7	103	.pm = &arizona_pm_ops,
d781009c	104	.of_match_table = of_match_ptr(arizona_of_match),
a15123c7 MB	105	},
a15123c7 MB	106	.probe = arizona_spi_probe,
84449216	107	.remove = arizona_spi_remove,
a15123c7 MB	108	.id_table = arizona_spi_ids,
	109	};
	110
	111	module_spi_driver(arizona_spi_driver);
	112
	113	MODULE_DESCRIPTION("Arizona SPI bus interface");
	114	MODULE_AUTHOR("Mark Brown <broonie@opensource.wolfsonmicro.com>");
	115	MODULE_LICENSE("GPL");