1 // SPDX-License-Identifier: GPL-2.0-only
2 /*
3 * wm8731.c -- WM8731 ALSA SoC Audio driver
4 *
5 * Copyright 2005 Openedhand Ltd.
6 * Copyright 2006-12 Wolfson Microelectronics, plc
7 *
8 * Author: Richard Purdie <richard@openedhand.com>
9 *
10 * Based on wm8753.c by Liam Girdwood
11 */
12
13 #include <linux/spi/spi.h>
14 #include <linux/module.h>
15 #include <linux/of_device.h>
16
17 #include "wm8731.h"
18
19 static const struct of_device_id wm8731_of_match[] = {
20 { .compatible = "wlf,wm8731", },
21 { }
22 };
23 MODULE_DEVICE_TABLE(of, wm8731_of_match);
24
wm8731_spi_probe(struct spi_device * spi)25 static int wm8731_spi_probe(struct spi_device *spi)
26 {
27 struct wm8731_priv *wm8731;
28 int ret;
29
30 wm8731 = devm_kzalloc(&spi->dev, sizeof(*wm8731), GFP_KERNEL);
31 if (wm8731 == NULL)
32 return -ENOMEM;
33
34 spi_set_drvdata(spi, wm8731);
35
36 wm8731->regmap = devm_regmap_init_spi(spi, &wm8731_regmap);
37 if (IS_ERR(wm8731->regmap)) {
38 ret = PTR_ERR(wm8731->regmap);
39 dev_err(&spi->dev, "Failed to allocate register map: %d\n",
40 ret);
41 return ret;
42 }
43
44 return wm8731_init(&spi->dev, wm8731);
45 }
46
47 static struct spi_driver wm8731_spi_driver = {
48 .driver = {
49 .name = "wm8731",
50 .of_match_table = wm8731_of_match,
51 },
52 .probe = wm8731_spi_probe,
53 };
54
55 module_spi_driver(wm8731_spi_driver);
56
57 MODULE_DESCRIPTION("ASoC WM8731 driver - SPI");
58 MODULE_AUTHOR("Richard Purdie");
59 MODULE_LICENSE("GPL");
60