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91157888 EB |
1 | /* |
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> | |
25 | #include <sound/soc-dapm.h> | |
26 | #include <asm/mach-types.h> | |
27 | ||
28 | #include "../codecs/tlv320aic23.h" | |
29 | #include "imx-ssi.h" | |
30 | ||
31 | #define CODEC_CLOCK 12000000 | |
32 | ||
33 | static int eukrea_tlv320_hw_params(struct snd_pcm_substream *substream, | |
34 | struct snd_pcm_hw_params *params) | |
35 | { | |
36 | struct snd_soc_pcm_runtime *rtd = substream->private_data; | |
37 | struct snd_soc_dai *codec_dai = rtd->dai->codec_dai; | |
38 | struct snd_soc_dai *cpu_dai = rtd->dai->cpu_dai; | |
39 | int ret; | |
40 | ||
41 | ret = snd_soc_dai_set_fmt(cpu_dai, SND_SOC_DAIFMT_I2S | | |
42 | SND_SOC_DAIFMT_NB_NF | | |
43 | SND_SOC_DAIFMT_CBM_CFM); | |
44 | if (ret) { | |
45 | pr_err("%s: failed set cpu dai format\n", __func__); | |
46 | return ret; | |
47 | } | |
48 | ||
49 | ret = snd_soc_dai_set_fmt(codec_dai, SND_SOC_DAIFMT_I2S | | |
50 | SND_SOC_DAIFMT_NB_NF | | |
51 | SND_SOC_DAIFMT_CBM_CFM); | |
52 | if (ret) { | |
53 | pr_err("%s: failed set codec dai format\n", __func__); | |
54 | return ret; | |
55 | } | |
56 | ||
57 | ret = snd_soc_dai_set_sysclk(codec_dai, 0, | |
58 | CODEC_CLOCK, SND_SOC_CLOCK_OUT); | |
59 | if (ret) { | |
60 | pr_err("%s: failed setting codec sysclk\n", __func__); | |
61 | return ret; | |
62 | } | |
43793207 | 63 | snd_soc_dai_set_tdm_slot(cpu_dai, 0xffffffc, 0xffffffc, 2, 0); |
91157888 EB |
64 | |
65 | ret = snd_soc_dai_set_sysclk(cpu_dai, IMX_SSP_SYS_CLK, 0, | |
66 | SND_SOC_CLOCK_IN); | |
67 | if (ret) { | |
68 | pr_err("can't set CPU system clock IMX_SSP_SYS_CLK\n"); | |
69 | return ret; | |
70 | } | |
71 | ||
72 | return 0; | |
73 | } | |
74 | ||
75 | static struct snd_soc_ops eukrea_tlv320_snd_ops = { | |
76 | .hw_params = eukrea_tlv320_hw_params, | |
77 | }; | |
78 | ||
79 | static struct snd_soc_dai_link eukrea_tlv320_dai = { | |
80 | .name = "tlv320aic23", | |
81 | .stream_name = "TLV320AIC23", | |
f0fba2ad LG |
82 | .codec_dai = "tlv320aic23-hifi", |
83 | .platform_name = "imx-pcm-audio.0", | |
84 | .codec_name = "tlv320aic23-codec.0-001a", | |
205d231b | 85 | .cpu_dai = "imx-ssi.0", |
91157888 EB |
86 | .ops = &eukrea_tlv320_snd_ops, |
87 | }; | |
88 | ||
89 | static struct snd_soc_card eukrea_tlv320 = { | |
90 | .name = "cpuimx-audio", | |
91157888 EB |
91 | .dai_link = &eukrea_tlv320_dai, |
92 | .num_links = 1, | |
93 | }; | |
94 | ||
91157888 EB |
95 | static struct platform_device *eukrea_tlv320_snd_device; |
96 | ||
97 | static int __init eukrea_tlv320_init(void) | |
98 | { | |
99 | int ret; | |
100 | ||
8a0bbbeb EB |
101 | if (!machine_is_eukrea_cpuimx27() && !machine_is_eukrea_cpuimx25sd() |
102 | && !machine_is_eukrea_cpuimx35sd()) | |
91157888 EB |
103 | /* 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 | ||
f0fba2ad | 110 | platform_set_drvdata(eukrea_tlv320_snd_device, &eukrea_tlv320); |
91157888 EB |
111 | 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 | ||
121 | static void __exit eukrea_tlv320_exit(void) | |
122 | { | |
123 | platform_device_unregister(eukrea_tlv320_snd_device); | |
124 | } | |
125 | ||
126 | module_init(eukrea_tlv320_init); | |
127 | module_exit(eukrea_tlv320_exit); | |
128 | ||
129 | MODULE_AUTHOR("Eric Bénard <eric@eukrea.com>"); | |
130 | MODULE_DESCRIPTION("CPUIMX ALSA SoC driver"); | |
131 | MODULE_LICENSE("GPL"); |