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Anuj Aggarwal89e9abe2009-10-30 00:22:30 +05301/*
2 * am3517evm.c -- ALSA SoC support for OMAP3517 / AM3517 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) 2009 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>
Paul Gortmakerda155d52011-07-15 12:38:28 -040022#include <linux/module.h>
Anuj Aggarwal89e9abe2009-10-30 00:22:30 +053023#include <sound/core.h>
24#include <sound/pcm.h>
25#include <sound/soc.h>
Anuj Aggarwal89e9abe2009-10-30 00:22:30 +053026
27#include <asm/mach-types.h>
Arnd Bergmann22037472012-08-24 15:21:06 +020028#include <linux/platform_data/asoc-ti-mcbsp.h>
Anuj Aggarwal89e9abe2009-10-30 00:22:30 +053029
30#include "omap-mcbsp.h"
Anuj Aggarwal89e9abe2009-10-30 00:22:30 +053031
32#include "../codecs/tlv320aic23.h"
33
34#define CODEC_CLOCK 12000000
35
36static int am3517evm_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;
Liam Girdwoodf0fba2a2010-03-17 20:15:21 +000040 struct snd_soc_dai *codec_dai = rtd->codec_dai;
Anuj Aggarwal89e9abe2009-10-30 00:22:30 +053041 int ret;
42
Anuj Aggarwal89e9abe2009-10-30 00:22:30 +053043 /* Set the codec system clock for DAC and ADC */
44 ret = snd_soc_dai_set_sysclk(codec_dai, 0,
45 CODEC_CLOCK, SND_SOC_CLOCK_IN);
Peter Ujfalusifca04ae2012-08-16 16:41:03 +030046 if (ret < 0)
Anuj Aggarwal89e9abe2009-10-30 00:22:30 +053047 printk(KERN_ERR "can't set codec system clock\n");
Anuj Aggarwal89e9abe2009-10-30 00:22:30 +053048
Peter Ujfalusifca04ae2012-08-16 16:41:03 +030049 return ret;
Anuj Aggarwal89e9abe2009-10-30 00:22:30 +053050}
51
52static struct snd_soc_ops am3517evm_ops = {
53 .hw_params = am3517evm_hw_params,
54};
55
56/* am3517evm machine dapm widgets */
57static const struct snd_soc_dapm_widget tlv320aic23_dapm_widgets[] = {
58 SND_SOC_DAPM_HP("Line Out", NULL),
59 SND_SOC_DAPM_LINE("Line In", NULL),
60 SND_SOC_DAPM_MIC("Mic In", NULL),
61};
62
63static const struct snd_soc_dapm_route audio_map[] = {
64 /* Line Out connected to LLOUT, RLOUT */
65 {"Line Out", NULL, "LOUT"},
66 {"Line Out", NULL, "ROUT"},
67
68 {"LLINEIN", NULL, "Line In"},
69 {"RLINEIN", NULL, "Line In"},
70
71 {"MICIN", NULL, "Mic In"},
72};
73
Anuj Aggarwal89e9abe2009-10-30 00:22:30 +053074/* Digital audio interface glue - connects codec <--> CPU */
75static struct snd_soc_dai_link am3517evm_dai = {
76 .name = "TLV320AIC23",
77 .stream_name = "AIC23",
Peter Ujfalusi45656b42012-02-14 18:20:58 +020078 .cpu_dai_name = "omap-mcbsp.1",
Liam Girdwoodf0fba2a2010-03-17 20:15:21 +000079 .codec_dai_name = "tlv320aic23-hifi",
Peter Ujfalusi30115172014-04-16 15:46:23 +030080 .platform_name = "omap-mcbsp.1",
Abhilash K Vffd6eae2011-03-08 21:02:43 +053081 .codec_name = "tlv320aic23-codec.2-001a",
Jarkko Nikulacf9feff2011-09-30 16:07:45 +030082 .dai_fmt = SND_SOC_DAIFMT_DSP_B | SND_SOC_DAIFMT_NB_NF |
83 SND_SOC_DAIFMT_CBM_CFM,
Anuj Aggarwal89e9abe2009-10-30 00:22:30 +053084 .ops = &am3517evm_ops,
85};
86
87/* Audio machine driver */
88static struct snd_soc_card snd_soc_am3517evm = {
89 .name = "am3517evm",
Axel Linb425b882011-12-22 11:08:59 +080090 .owner = THIS_MODULE,
Anuj Aggarwal89e9abe2009-10-30 00:22:30 +053091 .dai_link = &am3517evm_dai,
92 .num_links = 1,
Peter Ujfalusid2266022011-10-10 15:34:09 +030093
94 .dapm_widgets = tlv320aic23_dapm_widgets,
95 .num_dapm_widgets = ARRAY_SIZE(tlv320aic23_dapm_widgets),
96 .dapm_routes = audio_map,
97 .num_dapm_routes = ARRAY_SIZE(audio_map),
Anuj Aggarwal89e9abe2009-10-30 00:22:30 +053098};
99
Anuj Aggarwal89e9abe2009-10-30 00:22:30 +0530100static struct platform_device *am3517evm_snd_device;
101
102static int __init am3517evm_soc_init(void)
103{
104 int ret;
105
Jarkko Nikulaec588ae2010-10-06 16:47:26 +0300106 if (!machine_is_omap3517evm())
Anuj Aggarwal89e9abe2009-10-30 00:22:30 +0530107 return -ENODEV;
Anuj Aggarwal89e9abe2009-10-30 00:22:30 +0530108 pr_info("OMAP3517 / AM3517 EVM SoC init\n");
109
110 am3517evm_snd_device = platform_device_alloc("soc-audio", -1);
111 if (!am3517evm_snd_device) {
112 printk(KERN_ERR "Platform device allocation failed\n");
113 return -ENOMEM;
114 }
115
Liam Girdwoodf0fba2a2010-03-17 20:15:21 +0000116 platform_set_drvdata(am3517evm_snd_device, &snd_soc_am3517evm);
Anuj Aggarwal89e9abe2009-10-30 00:22:30 +0530117
118 ret = platform_device_add(am3517evm_snd_device);
119 if (ret)
120 goto err1;
121
122 return 0;
123
124err1:
125 printk(KERN_ERR "Unable to add platform device\n");
126 platform_device_put(am3517evm_snd_device);
127
128 return ret;
129}
130
131static void __exit am3517evm_soc_exit(void)
132{
133 platform_device_unregister(am3517evm_snd_device);
134}
135
136module_init(am3517evm_soc_init);
137module_exit(am3517evm_soc_exit);
138
139MODULE_AUTHOR("Anuj Aggarwal <anuj.aggarwal@ti.com>");
140MODULE_DESCRIPTION("ALSA SoC OMAP3517 / AM3517 EVM");
141MODULE_LICENSE("GPL v2");