1 // SPDX-License-Identifier: GPL-2.0-only <<
2 /* 1 /*
3 * Driver for ADAU1361/ADAU1461/ADAU1761/ADAU1 2 * Driver for ADAU1361/ADAU1461/ADAU1761/ADAU1961 codec
4 * 3 *
5 * Copyright 2014 Analog Devices Inc. 4 * Copyright 2014 Analog Devices Inc.
6 * Author: Lars-Peter Clausen <lars@metafoo.d 5 * Author: Lars-Peter Clausen <lars@metafoo.de>
>> 6 *
>> 7 * Licensed under the GPL-2.
7 */ 8 */
8 9
9 #include <linux/mod_devicetable.h> 10 #include <linux/mod_devicetable.h>
10 #include <linux/module.h> 11 #include <linux/module.h>
11 #include <linux/regmap.h> 12 #include <linux/regmap.h>
12 #include <linux/spi/spi.h> 13 #include <linux/spi/spi.h>
13 #include <sound/soc.h> 14 #include <sound/soc.h>
14 15
15 #include "adau1761.h" 16 #include "adau1761.h"
16 17
17 static void adau1761_spi_switch_mode(struct de 18 static void adau1761_spi_switch_mode(struct device *dev)
18 { 19 {
19 struct spi_device *spi = to_spi_device 20 struct spi_device *spi = to_spi_device(dev);
20 21
21 /* 22 /*
22 * To get the device into SPI mode CLA 23 * To get the device into SPI mode CLATCH has to be pulled low three
23 * times. Do this by issuing three du 24 * times. Do this by issuing three dummy reads.
24 */ 25 */
25 spi_w8r8(spi, 0x00); 26 spi_w8r8(spi, 0x00);
26 spi_w8r8(spi, 0x00); 27 spi_w8r8(spi, 0x00);
27 spi_w8r8(spi, 0x00); 28 spi_w8r8(spi, 0x00);
28 } 29 }
29 30
30 static int adau1761_spi_probe(struct spi_devic 31 static int adau1761_spi_probe(struct spi_device *spi)
31 { 32 {
32 const struct spi_device_id *id = spi_g 33 const struct spi_device_id *id = spi_get_device_id(spi);
33 struct regmap_config config; 34 struct regmap_config config;
34 35
35 if (!id) 36 if (!id)
36 return -EINVAL; 37 return -EINVAL;
37 38
38 config = adau1761_regmap_config; 39 config = adau1761_regmap_config;
39 config.val_bits = 8; 40 config.val_bits = 8;
40 config.reg_bits = 24; 41 config.reg_bits = 24;
41 config.read_flag_mask = 0x1; 42 config.read_flag_mask = 0x1;
42 43
43 return adau1761_probe(&spi->dev, 44 return adau1761_probe(&spi->dev,
44 devm_regmap_init_spi(spi, &con 45 devm_regmap_init_spi(spi, &config),
45 id->driver_data, adau1761_spi_ 46 id->driver_data, adau1761_spi_switch_mode);
46 } 47 }
47 48
48 static void adau1761_spi_remove(struct spi_dev !! 49 static int adau1761_spi_remove(struct spi_device *spi)
49 { 50 {
50 adau17x1_remove(&spi->dev); 51 adau17x1_remove(&spi->dev);
>> 52 return 0;
51 } 53 }
52 54
53 static const struct spi_device_id adau1761_spi 55 static const struct spi_device_id adau1761_spi_id[] = {
54 { "adau1361", ADAU1361 }, 56 { "adau1361", ADAU1361 },
55 { "adau1461", ADAU1761 }, 57 { "adau1461", ADAU1761 },
56 { "adau1761", ADAU1761 }, 58 { "adau1761", ADAU1761 },
57 { "adau1961", ADAU1361 }, 59 { "adau1961", ADAU1361 },
58 { } 60 { }
59 }; 61 };
60 MODULE_DEVICE_TABLE(spi, adau1761_spi_id); 62 MODULE_DEVICE_TABLE(spi, adau1761_spi_id);
61 63
62 #if defined(CONFIG_OF) 64 #if defined(CONFIG_OF)
63 static const struct of_device_id adau1761_spi_ 65 static const struct of_device_id adau1761_spi_dt_ids[] = {
64 { .compatible = "adi,adau1361", }, 66 { .compatible = "adi,adau1361", },
65 { .compatible = "adi,adau1461", }, 67 { .compatible = "adi,adau1461", },
66 { .compatible = "adi,adau1761", }, 68 { .compatible = "adi,adau1761", },
67 { .compatible = "adi,adau1961", }, 69 { .compatible = "adi,adau1961", },
68 { }, 70 { },
69 }; 71 };
70 MODULE_DEVICE_TABLE(of, adau1761_spi_dt_ids); 72 MODULE_DEVICE_TABLE(of, adau1761_spi_dt_ids);
71 #endif 73 #endif
72 74
73 static struct spi_driver adau1761_spi_driver = 75 static struct spi_driver adau1761_spi_driver = {
74 .driver = { 76 .driver = {
75 .name = "adau1761", 77 .name = "adau1761",
76 .of_match_table = of_match_ptr 78 .of_match_table = of_match_ptr(adau1761_spi_dt_ids),
77 }, 79 },
78 .probe = adau1761_spi_probe, 80 .probe = adau1761_spi_probe,
79 .remove = adau1761_spi_remove, 81 .remove = adau1761_spi_remove,
80 .id_table = adau1761_spi_id, 82 .id_table = adau1761_spi_id,
81 }; 83 };
82 module_spi_driver(adau1761_spi_driver); 84 module_spi_driver(adau1761_spi_driver);
83 85
84 MODULE_DESCRIPTION("ASoC ADAU1361/ADAU1461/ADA 86 MODULE_DESCRIPTION("ASoC ADAU1361/ADAU1461/ADAU1761/ADAU1961 CODEC SPI driver");
85 MODULE_AUTHOR("Lars-Peter Clausen <lars@metafo 87 MODULE_AUTHOR("Lars-Peter Clausen <lars@metafoo.de>");
86 MODULE_LICENSE("GPL"); 88 MODULE_LICENSE("GPL");
87 89
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