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

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