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