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