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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> |
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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; |
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)) |
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)) |
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 }, |
95 | { "cs47l24", CS47L24 }, | |
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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), |
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105 | }, |
106 | .probe = arizona_spi_probe, | |
84449216 | 107 | .remove = arizona_spi_remove, |
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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"); |