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