1 /* SPDX-License-Identifier: GPL-2.0
2  *
3  * Copyright 2011-2019 NW Digital Radio
4  *
5  * Author: Annaliese McDermond <nh6z@nh6z.net>
6  *
7  * Based on sound/soc/codecs/wm8974 and TI driver for kernel 2.6.27.
8  *
9  */
10 
11 #include <linux/spi/spi.h>
12 #include <linux/module.h>
13 #include <linux/of.h>
14 #include <linux/regmap.h>
15 #include <sound/soc.h>
16 
17 #include "tlv320aic32x4.h"
18 
19 static const struct of_device_id aic32x4_of_id[];
20 
aic32x4_spi_probe(struct spi_device * spi)21 static int aic32x4_spi_probe(struct spi_device *spi)
22 {
23 	struct regmap *regmap;
24 	struct regmap_config config;
25 
26 	config = aic32x4_regmap_config;
27 	config.reg_bits = 7;
28 	config.pad_bits = 1;
29 	config.val_bits = 8;
30 	config.read_flag_mask = 0x01;
31 
32 	regmap = devm_regmap_init_spi(spi, &config);
33 
34 	if (spi->dev.of_node) {
35 		const struct of_device_id *oid;
36 
37 		oid = of_match_node(aic32x4_of_id, spi->dev.of_node);
38 		dev_set_drvdata(&spi->dev, (void *)oid->data);
39 	} else {
40 		const struct spi_device_id *id_entry;
41 
42 		id_entry = spi_get_device_id(spi);
43 		dev_set_drvdata(&spi->dev, (void *)id_entry->driver_data);
44 	}
45 
46 	return aic32x4_probe(&spi->dev, regmap);
47 }
48 
aic32x4_spi_remove(struct spi_device * spi)49 static void aic32x4_spi_remove(struct spi_device *spi)
50 {
51 	aic32x4_remove(&spi->dev);
52 }
53 
54 static const struct spi_device_id aic32x4_spi_id[] = {
55 	{ "tlv320aic32x4", (kernel_ulong_t)AIC32X4_TYPE_AIC32X4 },
56 	{ "tlv320aic32x6", (kernel_ulong_t)AIC32X4_TYPE_AIC32X6 },
57 	{ /* sentinel */ }
58 };
59 MODULE_DEVICE_TABLE(spi, aic32x4_spi_id);
60 
61 static const struct of_device_id aic32x4_of_id[] = {
62 	{ .compatible = "ti,tlv320aic32x4", .data = (void *)AIC32X4_TYPE_AIC32X4 },
63 	{ .compatible = "ti,tlv320aic32x6", .data = (void *)AIC32X4_TYPE_AIC32X6 },
64 	{ /* senitel */ }
65 };
66 MODULE_DEVICE_TABLE(of, aic32x4_of_id);
67 
68 static struct spi_driver aic32x4_spi_driver = {
69 	.driver = {
70 		.name = "tlv320aic32x4",
71 		.owner = THIS_MODULE,
72 		.of_match_table = aic32x4_of_id,
73 	},
74 	.probe =    aic32x4_spi_probe,
75 	.remove =   aic32x4_spi_remove,
76 	.id_table = aic32x4_spi_id,
77 };
78 
79 module_spi_driver(aic32x4_spi_driver);
80 
81 MODULE_DESCRIPTION("ASoC TLV320AIC32x4 codec driver SPI");
82 MODULE_AUTHOR("Annaliese McDermond <nh6z@nh6z.net>");
83 MODULE_LICENSE("GPL");
84