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Eric Bénard91157882010-05-27 10:58:55 +02001/*
2 * eukrea-tlv320.c -- SoC audio for eukrea_cpuimxXX in I2S mode
3 *
4 * Copyright 2010 Eric Bénard, Eukréa Electromatique <eric@eukrea.com>
5 *
6 * based on sound/soc/s3c24xx/s3c24xx_simtec_tlv320aic23.c
7 * which is Copyright 2009 Simtec Electronics
8 * and on sound/soc/imx/phycore-ac97.c which is
9 * Copyright 2009 Sascha Hauer, Pengutronix <s.hauer@pengutronix.de>
10 *
11 * This program is free software; you can redistribute it and/or modify it
12 * under the terms of the GNU General Public License as published by the
13 * Free Software Foundation; either version 2 of the License, or (at your
14 * option) any later version.
15 *
16 */
17
18#include <linux/module.h>
19#include <linux/moduleparam.h>
20#include <linux/device.h>
21#include <linux/i2c.h>
22#include <sound/core.h>
23#include <sound/pcm.h>
24#include <sound/soc.h>
Eric Bénard91157882010-05-27 10:58:55 +020025#include <asm/mach-types.h>
26
27#include "../codecs/tlv320aic23.h"
28#include "imx-ssi.h"
29
30#define CODEC_CLOCK 12000000
31
32static int eukrea_tlv320_hw_params(struct snd_pcm_substream *substream,
33 struct snd_pcm_hw_params *params)
34{
35 struct snd_soc_pcm_runtime *rtd = substream->private_data;
Sascha Haueradd330e2010-11-04 17:05:40 +010036 struct snd_soc_dai *codec_dai = rtd->codec_dai;
37 struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
Eric Bénard91157882010-05-27 10:58:55 +020038 int ret;
39
40 ret = snd_soc_dai_set_fmt(cpu_dai, SND_SOC_DAIFMT_I2S |
41 SND_SOC_DAIFMT_NB_NF |
42 SND_SOC_DAIFMT_CBM_CFM);
43 if (ret) {
44 pr_err("%s: failed set cpu dai format\n", __func__);
45 return ret;
46 }
47
48 ret = snd_soc_dai_set_fmt(codec_dai, SND_SOC_DAIFMT_I2S |
49 SND_SOC_DAIFMT_NB_NF |
50 SND_SOC_DAIFMT_CBM_CFM);
51 if (ret) {
52 pr_err("%s: failed set codec dai format\n", __func__);
53 return ret;
54 }
55
56 ret = snd_soc_dai_set_sysclk(codec_dai, 0,
57 CODEC_CLOCK, SND_SOC_CLOCK_OUT);
58 if (ret) {
59 pr_err("%s: failed setting codec sysclk\n", __func__);
60 return ret;
61 }
Eric Bénard43793202010-06-17 15:44:01 +020062 snd_soc_dai_set_tdm_slot(cpu_dai, 0xffffffc, 0xffffffc, 2, 0);
Eric Bénard91157882010-05-27 10:58:55 +020063
64 ret = snd_soc_dai_set_sysclk(cpu_dai, IMX_SSP_SYS_CLK, 0,
65 SND_SOC_CLOCK_IN);
66 if (ret) {
67 pr_err("can't set CPU system clock IMX_SSP_SYS_CLK\n");
68 return ret;
69 }
70
71 return 0;
72}
73
74static struct snd_soc_ops eukrea_tlv320_snd_ops = {
75 .hw_params = eukrea_tlv320_hw_params,
76};
77
78static struct snd_soc_dai_link eukrea_tlv320_dai = {
79 .name = "tlv320aic23",
80 .stream_name = "TLV320AIC23",
Sascha Haueradd330e2010-11-04 17:05:40 +010081 .codec_dai_name = "tlv320aic23-hifi",
Eric Bénard43c63182011-02-25 13:47:46 +010082 .platform_name = "imx-fiq-pcm-audio.0",
Liam Girdwoodf0fba2a2010-03-17 20:15:21 +000083 .codec_name = "tlv320aic23-codec.0-001a",
Sascha Haueradd330e2010-11-04 17:05:40 +010084 .cpu_dai_name = "imx-ssi.0",
Eric Bénard91157882010-05-27 10:58:55 +020085 .ops = &eukrea_tlv320_snd_ops,
86};
87
88static struct snd_soc_card eukrea_tlv320 = {
89 .name = "cpuimx-audio",
Eric Bénard91157882010-05-27 10:58:55 +020090 .dai_link = &eukrea_tlv320_dai,
91 .num_links = 1,
92};
93
Eric Bénard91157882010-05-27 10:58:55 +020094static struct platform_device *eukrea_tlv320_snd_device;
95
96static int __init eukrea_tlv320_init(void)
97{
98 int ret;
99
Eric Bénard8a0bbbe2010-07-19 10:40:32 +0200100 if (!machine_is_eukrea_cpuimx27() && !machine_is_eukrea_cpuimx25sd()
Eric Bénard2c4066c2011-02-25 13:48:15 +0100101 && !machine_is_eukrea_cpuimx35sd()
102 && !machine_is_eukrea_cpuimx51sd())
Eric Bénard91157882010-05-27 10:58:55 +0200103 /* return happy. We might run on a totally different machine */
104 return 0;
105
106 eukrea_tlv320_snd_device = platform_device_alloc("soc-audio", -1);
107 if (!eukrea_tlv320_snd_device)
108 return -ENOMEM;
109
Liam Girdwoodf0fba2a2010-03-17 20:15:21 +0000110 platform_set_drvdata(eukrea_tlv320_snd_device, &eukrea_tlv320);
Eric Bénard91157882010-05-27 10:58:55 +0200111 ret = platform_device_add(eukrea_tlv320_snd_device);
112
113 if (ret) {
114 printk(KERN_ERR "ASoC: Platform device allocation failed\n");
115 platform_device_put(eukrea_tlv320_snd_device);
116 }
117
118 return ret;
119}
120
121static void __exit eukrea_tlv320_exit(void)
122{
123 platform_device_unregister(eukrea_tlv320_snd_device);
124}
125
126module_init(eukrea_tlv320_init);
127module_exit(eukrea_tlv320_exit);
128
129MODULE_AUTHOR("Eric Bénard <eric@eukrea.com>");
130MODULE_DESCRIPTION("CPUIMX ALSA SoC driver");
131MODULE_LICENSE("GPL");