sound/soc/fsl/eukrea-tlv320.c

   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                 dev_err(cpu_dai->dev,
  46                         "Failed to set the cpu dai format.\n");
  47                 return ret;
  48         }
  49
  50         ret = snd_soc_dai_set_fmt(codec_dai, SND_SOC_DAIFMT_I2S |
  51                                   SND_SOC_DAIFMT_NB_NF |
  52                                   SND_SOC_DAIFMT_CBM_CFM);
  53         if (ret) {
  54                 dev_err(cpu_dai->dev,
  55                         "Failed to set the codec format.\n");
  56                 return ret;
  57         }
  58
  59         ret = snd_soc_dai_set_sysclk(codec_dai, 0,
  60                                      CODEC_CLOCK, SND_SOC_CLOCK_OUT);
  61         if (ret) {
  62                 dev_err(cpu_dai->dev,
  63                         "Failed to set the codec sysclk.\n");
  64                 return ret;
  65         }
  66         snd_soc_dai_set_tdm_slot(cpu_dai, 0xffffffc, 0xffffffc, 2, 0);
  67
  68         ret = snd_soc_dai_set_sysclk(cpu_dai, IMX_SSP_SYS_CLK, 0,
  69                                 SND_SOC_CLOCK_IN);
  70         if (ret) {
  71                 dev_err(cpu_dai->dev,
  72                         "Can't set the IMX_SSP_SYS_CLK CPU system clock.\n");
  73                 return ret;
  74         }
  75
  76         return 0;
  77 }
  78
  79 static struct snd_soc_ops eukrea_tlv320_snd_ops = {
  80         .hw_params      = eukrea_tlv320_hw_params,
  81 };
  82
  83 static struct snd_soc_dai_link eukrea_tlv320_dai = {
  84         .name           = "tlv320aic23",
  85         .stream_name    = "TLV320AIC23",
  86         .codec_dai_name = "tlv320aic23-hifi",
  87         .platform_name  = "imx-ssi.0",
  88         .codec_name     = "tlv320aic23-codec.0-001a",
  89         .cpu_dai_name   = "imx-ssi.0",
  90         .ops            = &eukrea_tlv320_snd_ops,
  91 };
  92
  93 static struct snd_soc_card eukrea_tlv320 = {
  94         .name           = "cpuimx-audio",
  95         .owner          = THIS_MODULE,
  96         .dai_link       = &eukrea_tlv320_dai,
  97         .num_links      = 1,
  98 };
  99
 100 static int eukrea_tlv320_probe(struct platform_device *pdev)
 101 {
 102         int ret;
 103         int int_port = 0, ext_port;
 104
 105         if (machine_is_eukrea_cpuimx27()) {
 106                 imx_audmux_v1_configure_port(MX27_AUDMUX_HPCR1_SSI0,
 107                         IMX_AUDMUX_V1_PCR_SYN |
 108                         IMX_AUDMUX_V1_PCR_TFSDIR |
 109                         IMX_AUDMUX_V1_PCR_TCLKDIR |
 110                         IMX_AUDMUX_V1_PCR_RFSDIR |
 111                         IMX_AUDMUX_V1_PCR_RCLKDIR |
 112                         IMX_AUDMUX_V1_PCR_TFCSEL(MX27_AUDMUX_HPCR3_SSI_PINS_4) |
 113                         IMX_AUDMUX_V1_PCR_RFCSEL(MX27_AUDMUX_HPCR3_SSI_PINS_4) |
 114                         IMX_AUDMUX_V1_PCR_RXDSEL(MX27_AUDMUX_HPCR3_SSI_PINS_4)
 115                 );
 116                 imx_audmux_v1_configure_port(MX27_AUDMUX_HPCR3_SSI_PINS_4,
 117                         IMX_AUDMUX_V1_PCR_SYN |
 118                         IMX_AUDMUX_V1_PCR_RXDSEL(MX27_AUDMUX_HPCR1_SSI0)
 119                 );
 120         } else if (machine_is_eukrea_cpuimx25sd() ||
 121                    machine_is_eukrea_cpuimx35sd() ||
 122                    machine_is_eukrea_cpuimx51sd()) {
 123                 ext_port = machine_is_eukrea_cpuimx25sd() ? 4 : 3;
 124                 imx_audmux_v2_configure_port(int_port,
 125                         IMX_AUDMUX_V2_PTCR_SYN |
 126                         IMX_AUDMUX_V2_PTCR_TFSDIR |
 127                         IMX_AUDMUX_V2_PTCR_TFSEL(ext_port) |
 128                         IMX_AUDMUX_V2_PTCR_TCLKDIR |
 129                         IMX_AUDMUX_V2_PTCR_TCSEL(ext_port),
 130                         IMX_AUDMUX_V2_PDCR_RXDSEL(ext_port)
 131                 );
 132                 imx_audmux_v2_configure_port(ext_port,
 133                         IMX_AUDMUX_V2_PTCR_SYN,
 134                         IMX_AUDMUX_V2_PDCR_RXDSEL(int_port)
 135                 );
 136         } else {
 137                 /* return happy. We might run on a totally different machine */
 138                 return 0;
 139         }
 140
 141         eukrea_tlv320.dev = &pdev->dev;
 142         ret = snd_soc_register_card(&eukrea_tlv320);
 143         if (ret)
 144                 dev_err(&pdev->dev, "snd_soc_register_card failed (%d)\n", ret);
 145
 146         return ret;
 147 }
 148
 149 static int eukrea_tlv320_remove(struct platform_device *pdev)
 150 {
 151         snd_soc_unregister_card(&eukrea_tlv320);
 152
 153         return 0;
 154 }
 155
 156 static struct platform_driver eukrea_tlv320_driver = {
 157         .driver = {
 158                 .name = "eukrea_tlv320",
 159                 .owner = THIS_MODULE,
 160         },
 161         .probe = eukrea_tlv320_probe,
 162         .remove = eukrea_tlv320_remove,
 163 };
 164
 165 module_platform_driver(eukrea_tlv320_driver);
 166
 167 MODULE_AUTHOR("Eric Bénard <eric@eukrea.com>");
 168 MODULE_DESCRIPTION("CPUIMX ALSA SoC driver");
 169 MODULE_LICENSE("GPL");
 170 MODULE_ALIAS("platform:eukrea_tlv320");