1/*
2 * arizona-spi.c  --  Arizona SPI bus interface
3 *
4 * Copyright 2012 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
9 * it under the terms of the GNU General Public License version 2 as
10 * published by the Free Software Foundation.
11 */
12
13#include <linux/err.h>
14#include <linux/module.h>
15#include <linux/pm_runtime.h>
16#include <linux/regmap.h>
17#include <linux/regulator/consumer.h>
18#include <linux/slab.h>
19#include <linux/spi/spi.h>
20#include <linux/of.h>
21
22#include <linux/mfd/arizona/core.h>
23
24#include "arizona.h"
25
26static int arizona_spi_probe(struct spi_device *spi)
27{
28	const struct spi_device_id *id = spi_get_device_id(spi);
29	struct arizona *arizona;
30	const struct regmap_config *regmap_config;
31	unsigned long type;
32	int ret;
33
34	if (spi->dev.of_node)
35		type = arizona_of_get_type(&spi->dev);
36	else
37		type = id->driver_data;
38
39	switch (type) {
40#ifdef CONFIG_MFD_WM5102
41	case WM5102:
42		regmap_config = &wm5102_spi_regmap;
43		break;
44#endif
45#ifdef CONFIG_MFD_WM5110
46	case WM5110:
47	case WM8280:
48		regmap_config = &wm5110_spi_regmap;
49		break;
50#endif
51	default:
52		dev_err(&spi->dev, "Unknown device type %ld\n",
53			id->driver_data);
54		return -EINVAL;
55	}
56
57	arizona = devm_kzalloc(&spi->dev, sizeof(*arizona), GFP_KERNEL);
58	if (arizona == NULL)
59		return -ENOMEM;
60
61	arizona->regmap = devm_regmap_init_spi(spi, regmap_config);
62	if (IS_ERR(arizona->regmap)) {
63		ret = PTR_ERR(arizona->regmap);
64		dev_err(&spi->dev, "Failed to allocate register map: %d\n",
65			ret);
66		return ret;
67	}
68
69	arizona->type = id->driver_data;
70	arizona->dev = &spi->dev;
71	arizona->irq = spi->irq;
72
73	return arizona_dev_init(arizona);
74}
75
76static int arizona_spi_remove(struct spi_device *spi)
77{
78	struct arizona *arizona = spi_get_drvdata(spi);
79
80	arizona_dev_exit(arizona);
81
82	return 0;
83}
84
85static const struct spi_device_id arizona_spi_ids[] = {
86	{ "wm5102", WM5102 },
87	{ "wm5110", WM5110 },
88	{ "wm8280", WM8280 },
89	{ },
90};
91MODULE_DEVICE_TABLE(spi, arizona_spi_ids);
92
93static struct spi_driver arizona_spi_driver = {
94	.driver = {
95		.name	= "arizona",
96		.owner	= THIS_MODULE,
97		.pm	= &arizona_pm_ops,
98		.of_match_table	= of_match_ptr(arizona_of_match),
99	},
100	.probe		= arizona_spi_probe,
101	.remove		= arizona_spi_remove,
102	.id_table	= arizona_spi_ids,
103};
104
105module_spi_driver(arizona_spi_driver);
106
107MODULE_DESCRIPTION("Arizona SPI bus interface");
108MODULE_AUTHOR("Mark Brown <broonie@opensource.wolfsonmicro.com>");
109MODULE_LICENSE("GPL");
110