xref: /linux/sound/soc/fsl/eukrea-tlv320.c (revision b889fcf63cb62e7fdb7816565e28f44dbe4a76a5)
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 <asm/mach-types.h>
26 
27 #include "../codecs/tlv320aic23.h"
28 #include "imx-ssi.h"
29 #include "imx-audmux.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->codec_dai;
38 	struct snd_soc_dai *cpu_dai = rtd->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 	}
63 	snd_soc_dai_set_tdm_slot(cpu_dai, 0xffffffc, 0xffffffc, 2, 0);
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",
82 	.codec_dai_name	= "tlv320aic23-hifi",
83 	.platform_name	= "imx-fiq-pcm-audio.0",
84 	.codec_name	= "tlv320aic23-codec.0-001a",
85 	.cpu_dai_name	= "imx-ssi.0",
86 	.ops		= &eukrea_tlv320_snd_ops,
87 };
88 
89 static struct snd_soc_card eukrea_tlv320 = {
90 	.name		= "cpuimx-audio",
91 	.owner		= THIS_MODULE,
92 	.dai_link	= &eukrea_tlv320_dai,
93 	.num_links	= 1,
94 };
95 
96 static int eukrea_tlv320_probe(struct platform_device *pdev)
97 {
98 	int ret;
99 	int int_port = 0, ext_port;
100 
101 	if (machine_is_eukrea_cpuimx27()) {
102 		imx_audmux_v1_configure_port(MX27_AUDMUX_HPCR1_SSI0,
103 			IMX_AUDMUX_V1_PCR_SYN |
104 			IMX_AUDMUX_V1_PCR_TFSDIR |
105 			IMX_AUDMUX_V1_PCR_TCLKDIR |
106 			IMX_AUDMUX_V1_PCR_RFSDIR |
107 			IMX_AUDMUX_V1_PCR_RCLKDIR |
108 			IMX_AUDMUX_V1_PCR_TFCSEL(MX27_AUDMUX_HPCR3_SSI_PINS_4) |
109 			IMX_AUDMUX_V1_PCR_RFCSEL(MX27_AUDMUX_HPCR3_SSI_PINS_4) |
110 			IMX_AUDMUX_V1_PCR_RXDSEL(MX27_AUDMUX_HPCR3_SSI_PINS_4)
111 		);
112 		imx_audmux_v1_configure_port(MX27_AUDMUX_HPCR3_SSI_PINS_4,
113 			IMX_AUDMUX_V1_PCR_SYN |
114 			IMX_AUDMUX_V1_PCR_RXDSEL(MX27_AUDMUX_HPCR1_SSI0)
115 		);
116 	} else if (machine_is_eukrea_cpuimx25sd() ||
117 		   machine_is_eukrea_cpuimx35sd() ||
118 		   machine_is_eukrea_cpuimx51sd()) {
119 		ext_port = machine_is_eukrea_cpuimx25sd() ? 4 : 3;
120 		imx_audmux_v2_configure_port(int_port,
121 			IMX_AUDMUX_V2_PTCR_SYN |
122 			IMX_AUDMUX_V2_PTCR_TFSDIR |
123 			IMX_AUDMUX_V2_PTCR_TFSEL(ext_port) |
124 			IMX_AUDMUX_V2_PTCR_TCLKDIR |
125 			IMX_AUDMUX_V2_PTCR_TCSEL(ext_port),
126 			IMX_AUDMUX_V2_PDCR_RXDSEL(ext_port)
127 		);
128 		imx_audmux_v2_configure_port(ext_port,
129 			IMX_AUDMUX_V2_PTCR_SYN,
130 			IMX_AUDMUX_V2_PDCR_RXDSEL(int_port)
131 		);
132 	} else {
133 		/* return happy. We might run on a totally different machine */
134 		return 0;
135 	}
136 
137 	eukrea_tlv320.dev = &pdev->dev;
138 	ret = snd_soc_register_card(&eukrea_tlv320);
139 	if (ret)
140 		dev_err(&pdev->dev, "snd_soc_register_card failed (%d)\n", ret);
141 
142 	return ret;
143 }
144 
145 static int eukrea_tlv320_remove(struct platform_device *pdev)
146 {
147 	snd_soc_unregister_card(&eukrea_tlv320);
148 
149 	return 0;
150 }
151 
152 static struct platform_driver eukrea_tlv320_driver = {
153 	.driver = {
154 		.name = "eukrea_tlv320",
155 		.owner = THIS_MODULE,
156 	},
157 	.probe = eukrea_tlv320_probe,
158 	.remove = eukrea_tlv320_remove,};
159 
160 module_platform_driver(eukrea_tlv320_driver);
161 
162 MODULE_AUTHOR("Eric Bénard <eric@eukrea.com>");
163 MODULE_DESCRIPTION("CPUIMX ALSA SoC driver");
164 MODULE_LICENSE("GPL");
165 MODULE_ALIAS("platform:eukrea_tlv320");
166