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ASoC: Added OMAP3 EVM support in ASoC.
[mirror_ubuntu-zesty-kernel.git] / sound / soc / omap / omap3evm.c
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AA
1/*
2 * omap3evm.c -- ALSA SoC support for OMAP3 EVM
3 *
4 * Author: Anuj Aggarwal <anuj.aggarwal@ti.com>
5 *
6 * Based on sound/soc/omap/beagle.c by Steve Sakoman
7 *
8 * Copyright (C) 2008 Texas Instruments, Incorporated
9 *
10 * This program is free software; you can redistribute it and/or modify it
11 * under the terms of the GNU General Public License as published by the
12 * Free Software Foundation version 2.
13 *
14 * This program is distributed "as is" WITHOUT ANY WARRANTY of any kind,
15 * whether express or implied; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
17 * General Public License for more details.
18 */
19
20#include <linux/clk.h>
21#include <linux/platform_device.h>
22#include <sound/core.h>
23#include <sound/pcm.h>
24#include <sound/soc.h>
25#include <sound/soc-dapm.h>
26
27#include <asm/mach-types.h>
28#include <mach/hardware.h>
29#include <mach/gpio.h>
30#include <mach/mcbsp.h>
31
32#include "omap-mcbsp.h"
33#include "omap-pcm.h"
34#include "../codecs/twl4030.h"
35
36static int omap3evm_hw_params(struct snd_pcm_substream *substream,
37 struct snd_pcm_hw_params *params)
38{
39 struct snd_soc_pcm_runtime *rtd = substream->private_data;
40 struct snd_soc_dai *codec_dai = rtd->dai->codec_dai;
41 struct snd_soc_dai *cpu_dai = rtd->dai->cpu_dai;
42 int ret;
43
44 /* Set codec DAI configuration */
45 ret = snd_soc_dai_set_fmt(codec_dai,
46 SND_SOC_DAIFMT_I2S |
47 SND_SOC_DAIFMT_NB_NF |
48 SND_SOC_DAIFMT_CBM_CFM);
49 if (ret < 0) {
50 printk(KERN_ERR "Can't set codec DAI configuration\n");
51 return ret;
52 }
53
54 /* Set cpu DAI configuration */
55 ret = snd_soc_dai_set_fmt(cpu_dai,
56 SND_SOC_DAIFMT_I2S |
57 SND_SOC_DAIFMT_NB_NF |
58 SND_SOC_DAIFMT_CBM_CFM);
59 if (ret < 0) {
60 printk(KERN_ERR "Can't set cpu DAI configuration\n");
61 return ret;
62 }
63
64 /* Set the codec system clock for DAC and ADC */
65 ret = snd_soc_dai_set_sysclk(codec_dai, 0, 26000000,
66 SND_SOC_CLOCK_IN);
67 if (ret < 0) {
68 printk(KERN_ERR "Can't set codec system clock\n");
69 return ret;
70 }
71
72 return 0;
73}
74
75static struct snd_soc_ops omap3evm_ops = {
76 .hw_params = omap3evm_hw_params,
77};
78
79/* Digital audio interface glue - connects codec <--> CPU */
80static struct snd_soc_dai_link omap3evm_dai = {
81 .name = "TWL4030",
82 .stream_name = "TWL4030",
83 .cpu_dai = &omap_mcbsp_dai[0],
84 .codec_dai = &twl4030_dai[TWL4030_DAI_HIFI],
85 .ops = &omap3evm_ops,
86};
87
88/* Audio machine driver */
89static struct snd_soc_card snd_soc_omap3evm = {
90 .name = "omap3evm",
91 .platform = &omap_soc_platform,
92 .dai_link = &omap3evm_dai,
93 .num_links = 1,
94};
95
96/* Audio subsystem */
97static struct snd_soc_device omap3evm_snd_devdata = {
98 .card = &snd_soc_omap3evm,
99 .codec_dev = &soc_codec_dev_twl4030,
100};
101
102static struct platform_device *omap3evm_snd_device;
103
104static int __init omap3evm_soc_init(void)
105{
106 int ret;
107
108 if (!machine_is_omap3evm()) {
109 pr_err("Not OMAP3 EVM!\n");
110 return -ENODEV;
111 }
112 pr_info("OMAP3 EVM SoC init\n");
113
114 omap3evm_snd_device = platform_device_alloc("soc-audio", -1);
115 if (!omap3evm_snd_device) {
116 printk(KERN_ERR "Platform device allocation failed\n");
117 return -ENOMEM;
118 }
119
120 platform_set_drvdata(omap3evm_snd_device, &omap3evm_snd_devdata);
121 omap3evm_snd_devdata.dev = &omap3evm_snd_device->dev;
122 *(unsigned int *)omap3evm_dai.cpu_dai->private_data = 1;
123
124 ret = platform_device_add(omap3evm_snd_device);
125 if (ret)
126 goto err1;
127
128 return 0;
129
130err1:
131 printk(KERN_ERR "Unable to add platform device\n");
132 platform_device_put(omap3evm_snd_device);
133
134 return ret;
135}
136
137static void __exit omap3evm_soc_exit(void)
138{
139 platform_device_unregister(omap3evm_snd_device);
140}
141
142module_init(omap3evm_soc_init);
143module_exit(omap3evm_soc_exit);
144
145MODULE_AUTHOR("Anuj Aggarwal <anuj.aggarwal@ti.com>");
146MODULE_DESCRIPTION("ALSA SoC OMAP3 EVM");
147MODULE_LICENSE("GPLv2");