[mirror_ubuntu-bionic-kernel.git] / drivers / mfd / wm831x-spi.c

/*
 * wm831x-spi.c  --  SPI access for Wolfson WM831x PMICs
 *
 * Copyright 2009,2010 Wolfson Microelectronics PLC.
 *
 * Author: Mark Brown <broonie@opensource.wolfsonmicro.com>
 *
 *  This program is free software; you can redistribute  it and/or modify it
 *  under  the terms of  the GNU General  Public License as published by the
 *  Free Software Foundation;  either version 2 of the  License, or (at your
 *  option) any later version.
 *
 */

#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/pm.h>
#include <linux/spi/spi.h>
#include <linux/regmap.h>
#include <linux/err.h>

#include <linux/mfd/wm831x/core.h>

static int __devinit wm831x_spi_probe(struct spi_device *spi)
{
	struct wm831x *wm831x;
	enum wm831x_parent type;
	int ret;

	/* Currently SPI support for ID tables is unmerged, we're faking it */
	if (strcmp(spi->modalias, "wm8310") == 0)
		type = WM8310;
	else if (strcmp(spi->modalias, "wm8311") == 0)
		type = WM8311;
	else if (strcmp(spi->modalias, "wm8312") == 0)
		type = WM8312;
	else if (strcmp(spi->modalias, "wm8320") == 0)
		type = WM8320;
	else if (strcmp(spi->modalias, "wm8321") == 0)
		type = WM8321;
	else if (strcmp(spi->modalias, "wm8325") == 0)
		type = WM8325;
	else if (strcmp(spi->modalias, "wm8326") == 0)
		type = WM8326;
	else {
		dev_err(&spi->dev, "Unknown device type\n");
		return -EINVAL;
	}

	wm831x = kzalloc(sizeof(struct wm831x), GFP_KERNEL);
	if (wm831x == NULL)
		return -ENOMEM;

	spi->bits_per_word = 16;
	spi->mode = SPI_MODE_0;

	dev_set_drvdata(&spi->dev, wm831x);
	wm831x->dev = &spi->dev;

	wm831x->regmap = regmap_init_spi(wm831x->dev, &wm831x_regmap_config);
	if (IS_ERR(wm831x->regmap)) {
		ret = PTR_ERR(wm831x->regmap);
		dev_err(wm831x->dev, "Failed to allocate register map: %d\n",
			ret);
		kfree(wm831x);
		return ret;
	}

	return wm831x_device_init(wm831x, type, spi->irq);
}

static int __devexit wm831x_spi_remove(struct spi_device *spi)
{
	struct wm831x *wm831x = dev_get_drvdata(&spi->dev);

	wm831x_device_exit(wm831x);

	return 0;
}

static int wm831x_spi_suspend(struct device *dev)
{
	struct wm831x *wm831x = dev_get_drvdata(dev);

	return wm831x_device_suspend(wm831x);
}

static const struct dev_pm_ops wm831x_spi_pm = {
	.freeze = wm831x_spi_suspend,
	.suspend = wm831x_spi_suspend,
};

static struct spi_driver wm8310_spi_driver = {
	.driver = {
		.name	= "wm8310",
		.bus	= &spi_bus_type,
		.owner	= THIS_MODULE,
		.pm	= &wm831x_spi_pm,
	},
	.probe		= wm831x_spi_probe,
	.remove		= __devexit_p(wm831x_spi_remove),
};

static struct spi_driver wm8311_spi_driver = {
	.driver = {
		.name	= "wm8311",
		.bus	= &spi_bus_type,
		.owner	= THIS_MODULE,
		.pm	= &wm831x_spi_pm,
	},
	.probe		= wm831x_spi_probe,
	.remove		= __devexit_p(wm831x_spi_remove),
};

static struct spi_driver wm8312_spi_driver = {
	.driver = {
		.name	= "wm8312",
		.bus	= &spi_bus_type,
		.owner	= THIS_MODULE,
		.pm	= &wm831x_spi_pm,
	},
	.probe		= wm831x_spi_probe,
	.remove		= __devexit_p(wm831x_spi_remove),
};

static struct spi_driver wm8320_spi_driver = {
	.driver = {
		.name	= "wm8320",
		.bus	= &spi_bus_type,
		.owner	= THIS_MODULE,
		.pm	= &wm831x_spi_pm,
	},
	.probe		= wm831x_spi_probe,
	.remove		= __devexit_p(wm831x_spi_remove),
};

static struct spi_driver wm8321_spi_driver = {
	.driver = {
		.name	= "wm8321",
		.bus	= &spi_bus_type,
		.owner	= THIS_MODULE,
		.pm	= &wm831x_spi_pm,
	},
	.probe		= wm831x_spi_probe,
	.remove		= __devexit_p(wm831x_spi_remove),
};

static struct spi_driver wm8325_spi_driver = {
	.driver = {
		.name	= "wm8325",
		.bus	= &spi_bus_type,
		.owner	= THIS_MODULE,
		.pm	= &wm831x_spi_pm,
	},
	.probe		= wm831x_spi_probe,
	.remove		= __devexit_p(wm831x_spi_remove),
};

static struct spi_driver wm8326_spi_driver = {
	.driver = {
		.name	= "wm8326",
		.bus	= &spi_bus_type,
		.owner	= THIS_MODULE,
		.pm	= &wm831x_spi_pm,
	},
	.probe		= wm831x_spi_probe,
	.remove		= __devexit_p(wm831x_spi_remove),
};

static int __init wm831x_spi_init(void)
{
	int ret;

	ret = spi_register_driver(&wm8310_spi_driver);
	if (ret != 0)
		pr_err("Failed to register WM8310 SPI driver: %d\n", ret);

	ret = spi_register_driver(&wm8311_spi_driver);
	if (ret != 0)
		pr_err("Failed to register WM8311 SPI driver: %d\n", ret);

	ret = spi_register_driver(&wm8312_spi_driver);
	if (ret != 0)
		pr_err("Failed to register WM8312 SPI driver: %d\n", ret);

	ret = spi_register_driver(&wm8320_spi_driver);
	if (ret != 0)
		pr_err("Failed to register WM8320 SPI driver: %d\n", ret);

	ret = spi_register_driver(&wm8321_spi_driver);
	if (ret != 0)
		pr_err("Failed to register WM8321 SPI driver: %d\n", ret);

	ret = spi_register_driver(&wm8325_spi_driver);
	if (ret != 0)
		pr_err("Failed to register WM8325 SPI driver: %d\n", ret);

	ret = spi_register_driver(&wm8326_spi_driver);
	if (ret != 0)
		pr_err("Failed to register WM8326 SPI driver: %d\n", ret);

	return 0;
}
subsys_initcall(wm831x_spi_init);

static void __exit wm831x_spi_exit(void)
{
	spi_unregister_driver(&wm8326_spi_driver);
	spi_unregister_driver(&wm8325_spi_driver);
	spi_unregister_driver(&wm8321_spi_driver);
	spi_unregister_driver(&wm8320_spi_driver);
	spi_unregister_driver(&wm8312_spi_driver);
	spi_unregister_driver(&wm8311_spi_driver);
	spi_unregister_driver(&wm8310_spi_driver);
}
module_exit(wm831x_spi_exit);

MODULE_DESCRIPTION("SPI support for WM831x/2x AudioPlus PMICs");
MODULE_LICENSE("GPL");
MODULE_AUTHOR("Mark Brown");
Commit	Line	Data
2aa13b9e MB	1	/*
	2	* wm831x-spi.c -- SPI access for Wolfson WM831x PMICs
	3	*
	4	* Copyright 2009,2010 Wolfson Microelectronics PLC.
	5	*
	6	* Author: Mark Brown <broonie@opensource.wolfsonmicro.com>
	7	*
	8	* This program is free software; you can redistribute it and/or modify it
	9	* under the terms of the GNU General Public License as published by the
	10	* Free Software Foundation; either version 2 of the License, or (at your
	11	* option) any later version.
	12	*
	13	*/
	14
	15	#include <linux/kernel.h>
	16	#include <linux/module.h>
87d1906d	17	#include <linux/pm.h>
2aa13b9e	18	#include <linux/spi/spi.h>
1df5981b MB	19	#include <linux/regmap.h>
1df5981b MB	20	#include <linux/err.h>
2aa13b9e MB	21
	22	#include <linux/mfd/wm831x/core.h>
	23
2aa13b9e MB	24	static int __devinit wm831x_spi_probe(struct spi_device *spi)
	25	{
	26	struct wm831x *wm831x;
	27	enum wm831x_parent type;
1df5981b	28	int ret;
2aa13b9e MB	29
	30	/* Currently SPI support for ID tables is unmerged, we're faking it */
	31	if (strcmp(spi->modalias, "wm8310") == 0)
	32	type = WM8310;
	33	else if (strcmp(spi->modalias, "wm8311") == 0)
	34	type = WM8311;
	35	else if (strcmp(spi->modalias, "wm8312") == 0)
	36	type = WM8312;
	37	else if (strcmp(spi->modalias, "wm8320") == 0)
	38	type = WM8320;
	39	else if (strcmp(spi->modalias, "wm8321") == 0)
	40	type = WM8321;
	41	else if (strcmp(spi->modalias, "wm8325") == 0)
	42	type = WM8325;
412dc11d MB	43	else if (strcmp(spi->modalias, "wm8326") == 0)
412dc11d MB	44	type = WM8326;
2aa13b9e MB	45	else {
	46	dev_err(&spi->dev, "Unknown device type\n");
	47	return -EINVAL;
	48	}
	49
	50	wm831x = kzalloc(sizeof(struct wm831x), GFP_KERNEL);
	51	if (wm831x == NULL)
	52	return -ENOMEM;
	53
	54	spi->bits_per_word = 16;
	55	spi->mode = SPI_MODE_0;
	56
	57	dev_set_drvdata(&spi->dev, wm831x);
	58	wm831x->dev = &spi->dev;
1df5981b MB	59
	60	wm831x->regmap = regmap_init_spi(wm831x->dev, &wm831x_regmap_config);
	61	if (IS_ERR(wm831x->regmap)) {
	62	ret = PTR_ERR(wm831x->regmap);
	63	dev_err(wm831x->dev, "Failed to allocate register map: %d\n",
	64	ret);
	65	kfree(wm831x);
	66	return ret;
	67	}
2aa13b9e MB	68
	69	return wm831x_device_init(wm831x, type, spi->irq);
	70	}
	71
	72	static int __devexit wm831x_spi_remove(struct spi_device *spi)
	73	{
	74	struct wm831x *wm831x = dev_get_drvdata(&spi->dev);
	75
	76	wm831x_device_exit(wm831x);
	77
	78	return 0;
	79	}
	80
87d1906d	81	static int wm831x_spi_suspend(struct device *dev)
2aa13b9e	82	{
87d1906d	83	struct wm831x *wm831x = dev_get_drvdata(dev);
2aa13b9e MB	84
	85	return wm831x_device_suspend(wm831x);
	86	}
	87
87d1906d MB	88	static const struct dev_pm_ops wm831x_spi_pm = {
	89	.freeze = wm831x_spi_suspend,
	90	.suspend = wm831x_spi_suspend,
	91	};
	92
2aa13b9e MB	93	static struct spi_driver wm8310_spi_driver = {
	94	.driver = {
	95	.name = "wm8310",
	96	.bus = &spi_bus_type,
	97	.owner = THIS_MODULE,
87d1906d	98	.pm = &wm831x_spi_pm,
2aa13b9e MB	99	},
	100	.probe = wm831x_spi_probe,
	101	.remove = __devexit_p(wm831x_spi_remove),
2aa13b9e MB	102	};
	103
	104	static struct spi_driver wm8311_spi_driver = {
	105	.driver = {
	106	.name = "wm8311",
	107	.bus = &spi_bus_type,
	108	.owner = THIS_MODULE,
87d1906d	109	.pm = &wm831x_spi_pm,
2aa13b9e MB	110	},
	111	.probe = wm831x_spi_probe,
	112	.remove = __devexit_p(wm831x_spi_remove),
2aa13b9e MB	113	};
	114
	115	static struct spi_driver wm8312_spi_driver = {
	116	.driver = {
	117	.name = "wm8312",
	118	.bus = &spi_bus_type,
	119	.owner = THIS_MODULE,
87d1906d	120	.pm = &wm831x_spi_pm,
2aa13b9e MB	121	},
	122	.probe = wm831x_spi_probe,
	123	.remove = __devexit_p(wm831x_spi_remove),
2aa13b9e MB	124	};
	125
	126	static struct spi_driver wm8320_spi_driver = {
	127	.driver = {
	128	.name = "wm8320",
	129	.bus = &spi_bus_type,
	130	.owner = THIS_MODULE,
87d1906d	131	.pm = &wm831x_spi_pm,
2aa13b9e MB	132	},
	133	.probe = wm831x_spi_probe,
	134	.remove = __devexit_p(wm831x_spi_remove),
2aa13b9e MB	135	};
	136
	137	static struct spi_driver wm8321_spi_driver = {
	138	.driver = {
	139	.name = "wm8321",
	140	.bus = &spi_bus_type,
	141	.owner = THIS_MODULE,
87d1906d	142	.pm = &wm831x_spi_pm,
2aa13b9e MB	143	},
	144	.probe = wm831x_spi_probe,
	145	.remove = __devexit_p(wm831x_spi_remove),
2aa13b9e MB	146	};
	147
	148	static struct spi_driver wm8325_spi_driver = {
	149	.driver = {
	150	.name = "wm8325",
	151	.bus = &spi_bus_type,
	152	.owner = THIS_MODULE,
87d1906d	153	.pm = &wm831x_spi_pm,
2aa13b9e MB	154	},
	155	.probe = wm831x_spi_probe,
	156	.remove = __devexit_p(wm831x_spi_remove),
2aa13b9e MB	157	};
2aa13b9e MB	158
412dc11d MB	159	static struct spi_driver wm8326_spi_driver = {
	160	.driver = {
	161	.name = "wm8326",
	162	.bus = &spi_bus_type,
	163	.owner = THIS_MODULE,
87d1906d	164	.pm = &wm831x_spi_pm,
412dc11d MB	165	},
	166	.probe = wm831x_spi_probe,
	167	.remove = __devexit_p(wm831x_spi_remove),
412dc11d MB	168	};
412dc11d MB	169
2aa13b9e MB	170	static int __init wm831x_spi_init(void)
	171	{
	172	int ret;
	173
	174	ret = spi_register_driver(&wm8310_spi_driver);
	175	if (ret != 0)
	176	pr_err("Failed to register WM8310 SPI driver: %d\n", ret);
	177
	178	ret = spi_register_driver(&wm8311_spi_driver);
	179	if (ret != 0)
	180	pr_err("Failed to register WM8311 SPI driver: %d\n", ret);
	181
	182	ret = spi_register_driver(&wm8312_spi_driver);
	183	if (ret != 0)
	184	pr_err("Failed to register WM8312 SPI driver: %d\n", ret);
	185
	186	ret = spi_register_driver(&wm8320_spi_driver);
	187	if (ret != 0)
	188	pr_err("Failed to register WM8320 SPI driver: %d\n", ret);
	189
	190	ret = spi_register_driver(&wm8321_spi_driver);
	191	if (ret != 0)
	192	pr_err("Failed to register WM8321 SPI driver: %d\n", ret);
	193
	194	ret = spi_register_driver(&wm8325_spi_driver);
	195	if (ret != 0)
	196	pr_err("Failed to register WM8325 SPI driver: %d\n", ret);
	197
412dc11d MB	198	ret = spi_register_driver(&wm8326_spi_driver);
	199	if (ret != 0)
	200	pr_err("Failed to register WM8326 SPI driver: %d\n", ret);
	201
2aa13b9e MB	202	return 0;
	203	}
	204	subsys_initcall(wm831x_spi_init);
	205
	206	static void __exit wm831x_spi_exit(void)
	207	{
412dc11d	208	spi_unregister_driver(&wm8326_spi_driver);
2aa13b9e MB	209	spi_unregister_driver(&wm8325_spi_driver);
	210	spi_unregister_driver(&wm8321_spi_driver);
	211	spi_unregister_driver(&wm8320_spi_driver);
	212	spi_unregister_driver(&wm8312_spi_driver);
	213	spi_unregister_driver(&wm8311_spi_driver);
	214	spi_unregister_driver(&wm8310_spi_driver);
	215	}
	216	module_exit(wm831x_spi_exit);
	217
	218	MODULE_DESCRIPTION("SPI support for WM831x/2x AudioPlus PMICs");
	219	MODULE_LICENSE("GPL");
	220	MODULE_AUTHOR("Mark Brown");