blob: 14d0716bf0093b2a5d5b34ff5c8088302255b5dc [file] [log] [blame]
Mark Brown4bb3f432011-04-08 16:49:42 +09001/*
2 * Driver for the 1250-EV1 audio I/O module
3 *
4 * Copyright 2011 Wolfson Microelectronics plc
5 *
6 * This program is free software; you can redistribute it and/or modify it
7 * under the terms of the GNU General Public License as published by the
8 * Free Software Foundation; either version 2 of the License, or (at your
9 * option) any later version.
10 *
11 */
12
13#include <linux/init.h>
14#include <linux/module.h>
15#include <linux/i2c.h>
16
17#include <sound/soc.h>
18#include <sound/soc-dapm.h>
19
20static const struct snd_soc_dapm_widget wm1250_ev1_dapm_widgets[] = {
21SND_SOC_DAPM_ADC("ADC", "wm1250-ev1 Capture", SND_SOC_NOPM, 0, 0),
22SND_SOC_DAPM_DAC("DAC", "wm1250-ev1 Playback", SND_SOC_NOPM, 0, 0),
23
24SND_SOC_DAPM_INPUT("WM1250 Input"),
25SND_SOC_DAPM_INPUT("WM1250 Output"),
26};
27
28static const struct snd_soc_dapm_route wm1250_ev1_dapm_routes[] = {
29 { "ADC", NULL, "WM1250 Input" },
30 { "WM1250 Output", NULL, "DAC" },
31};
32
33static struct snd_soc_dai_driver wm1250_ev1_dai = {
34 .name = "wm1250-ev1",
35 .playback = {
36 .stream_name = "Playback",
37 .channels_min = 1,
38 .channels_max = 1,
39 .rates = SNDRV_PCM_RATE_8000,
40 .formats = SNDRV_PCM_FMTBIT_S16_LE,
41 },
42 .capture = {
43 .stream_name = "Capture",
44 .channels_min = 1,
45 .channels_max = 1,
46 .rates = SNDRV_PCM_RATE_8000,
47 .formats = SNDRV_PCM_FMTBIT_S16_LE,
48 },
49};
50
51static struct snd_soc_codec_driver soc_codec_dev_wm1250_ev1 = {
52 .dapm_widgets = wm1250_ev1_dapm_widgets,
53 .num_dapm_widgets = ARRAY_SIZE(wm1250_ev1_dapm_widgets),
54 .dapm_routes = wm1250_ev1_dapm_routes,
55 .num_dapm_routes = ARRAY_SIZE(wm1250_ev1_dapm_routes),
56};
57
58static int __devinit wm1250_ev1_probe(struct i2c_client *i2c,
59 const struct i2c_device_id *id)
60{
61 return snd_soc_register_codec(&i2c->dev, &soc_codec_dev_wm1250_ev1,
62 &wm1250_ev1_dai, 1);
63}
64
65static int __devexit wm1250_ev1_remove(struct i2c_client *i2c)
66{
67 snd_soc_unregister_codec(&i2c->dev);
68
69 return 0;
70}
71
72static const struct i2c_device_id wm1250_ev1_i2c_id[] = {
73 { "wm1250-ev1", 0 },
74 { }
75};
Mark Brown420dd712011-04-11 21:40:29 -070076MODULE_DEVICE_TABLE(i2c, wm1250_ev1_i2c_id);
Mark Brown4bb3f432011-04-08 16:49:42 +090077
78static struct i2c_driver wm1250_ev1_i2c_driver = {
79 .driver = {
80 .name = "wm1250-ev1",
81 .owner = THIS_MODULE,
82 },
83 .probe = wm1250_ev1_probe,
84 .remove = __devexit_p(wm1250_ev1_remove),
85 .id_table = wm1250_ev1_i2c_id,
86};
87
88static int __init wm1250_ev1_modinit(void)
89{
90 int ret = 0;
91
92 ret = i2c_add_driver(&wm1250_ev1_i2c_driver);
93 if (ret != 0)
94 pr_err("Failed to register WM1250-EV1 I2C driver: %d\n", ret);
95
96 return ret;
97}
98module_init(wm1250_ev1_modinit);
99
100static void __exit wm1250_ev1_exit(void)
101{
102 i2c_del_driver(&wm1250_ev1_i2c_driver);
103}
104module_exit(wm1250_ev1_exit);
105
106MODULE_AUTHOR("Mark Brown <broonie@opensource.wolfsonmicro.com>");
107MODULE_DESCRIPTION("WM1250-EV1 audio I/O module driver");
108MODULE_LICENSE("GPL");