sound/soc/imx/mx27vis-aic32x4.c

   1 /*
   2  * mx27vis-aic32x4.c
   3  *
   4  * Copyright 2011 Vista Silicon S.L.
   5  *
   6  * Author: Javier Martin <javier.martin@vista-silicon.com>
   7  *
   8  * This program is free software; you can redistribute  it and/or modify it
   9  * under  the terms of  the GNU General  Public License as published by the
  10  * Free Software Foundation;  either version 2 of the  License, or (at your
  11  * option) any later version.
  12  *
  13  * This program is distributed in the hope that it will be useful,
  14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16  * GNU General Public License for more details.
  17  *
  18  * You should have received a copy of the GNU General Public License
  19  * along with this program; if not, write to the Free Software
  20  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
  21  * MA 02110-1301, USA.
  22  */
  23
  24 #include <linux/module.h>
  25 #include <linux/moduleparam.h>
  26 #include <linux/device.h>
  27 #include <linux/i2c.h>
  28 #include <sound/core.h>
  29 #include <sound/pcm.h>
  30 #include <sound/soc.h>
  31 #include <sound/soc-dapm.h>
  32 #include <asm/mach-types.h>
  33 #include <mach/audmux.h>
  34
  35 #include "../codecs/tlv320aic32x4.h"
  36 #include "imx-ssi.h"
  37
  38 static int mx27vis_aic32x4_hw_params(struct snd_pcm_substream *substream,
  39                             struct snd_pcm_hw_params *params)
  40 {
  41         struct snd_soc_pcm_runtime *rtd = substream->private_data;
  42         struct snd_soc_dai *codec_dai = rtd->codec_dai;
  43         struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
  44         int ret;
  45         u32 dai_format;
  46
  47         dai_format = SND_SOC_DAIFMT_DSP_B | SND_SOC_DAIFMT_NB_NF |
  48                 SND_SOC_DAIFMT_CBM_CFM;
  49
  50         /* set codec DAI configuration */
  51         snd_soc_dai_set_fmt(codec_dai, dai_format);
  52
  53         /* set cpu DAI configuration */
  54         snd_soc_dai_set_fmt(cpu_dai, dai_format);
  55
  56         ret = snd_soc_dai_set_sysclk(codec_dai, 0,
  57                                      25000000, SND_SOC_CLOCK_OUT);
  58         if (ret) {
  59                 pr_err("%s: failed setting codec sysclk\n", __func__);
  60                 return ret;
  61         }
  62
  63         ret = snd_soc_dai_set_sysclk(cpu_dai, IMX_SSP_SYS_CLK, 0,
  64                                 SND_SOC_CLOCK_IN);
  65         if (ret) {
  66                 pr_err("can't set CPU system clock IMX_SSP_SYS_CLK\n");
  67                 return ret;
  68         }
  69
  70         return 0;
  71 }
  72
  73 static struct snd_soc_ops mx27vis_aic32x4_snd_ops = {
  74         .hw_params      = mx27vis_aic32x4_hw_params,
  75 };
  76
  77 static struct snd_soc_dai_link mx27vis_aic32x4_dai = {
  78         .name           = "tlv320aic32x4",
  79         .stream_name    = "TLV320AIC32X4",
  80         .codec_dai_name = "tlv320aic32x4-hifi",
  81         .platform_name  = "imx-pcm-audio.0",
  82         .codec_name     = "tlv320aic32x4.0-0018",
  83         .cpu_dai_name   = "imx-ssi.0",
  84         .ops            = &mx27vis_aic32x4_snd_ops,
  85 };
  86
  87 static struct snd_soc_card mx27vis_aic32x4 = {
  88         .name           = "visstrim_m10-audio",
  89         .owner          = THIS_MODULE,
  90         .dai_link       = &mx27vis_aic32x4_dai,
  91         .num_links      = 1,
  92 };
  93
  94 static struct platform_device *mx27vis_aic32x4_snd_device;
  95
  96 static int __init mx27vis_aic32x4_init(void)
  97 {
  98         int ret;
  99
 100         mx27vis_aic32x4_snd_device = platform_device_alloc("soc-audio", -1);
 101         if (!mx27vis_aic32x4_snd_device)
 102                 return -ENOMEM;
 103
 104         platform_set_drvdata(mx27vis_aic32x4_snd_device, &mx27vis_aic32x4);
 105         ret = platform_device_add(mx27vis_aic32x4_snd_device);
 106
 107         if (ret) {
 108                 printk(KERN_ERR "ASoC: Platform device allocation failed\n");
 109                 platform_device_put(mx27vis_aic32x4_snd_device);
 110         }
 111
 112         /* Connect SSI0 as clock slave to SSI1 external pins */
 113         mxc_audmux_v1_configure_port(MX27_AUDMUX_HPCR1_SSI0,
 114                         MXC_AUDMUX_V1_PCR_SYN |
 115                         MXC_AUDMUX_V1_PCR_TFSDIR |
 116                         MXC_AUDMUX_V1_PCR_TCLKDIR |
 117                         MXC_AUDMUX_V1_PCR_TFCSEL(MX27_AUDMUX_PPCR1_SSI_PINS_1) |
 118                         MXC_AUDMUX_V1_PCR_RXDSEL(MX27_AUDMUX_PPCR1_SSI_PINS_1)
 119         );
 120         mxc_audmux_v1_configure_port(MX27_AUDMUX_PPCR1_SSI_PINS_1,
 121                         MXC_AUDMUX_V1_PCR_SYN |
 122                         MXC_AUDMUX_V1_PCR_RXDSEL(MX27_AUDMUX_HPCR1_SSI0)
 123         );
 124
 125         return ret;
 126 }
 127
 128 static void __exit mx27vis_aic32x4_exit(void)
 129 {
 130         platform_device_unregister(mx27vis_aic32x4_snd_device);
 131 }
 132
 133 module_init(mx27vis_aic32x4_init);
 134 module_exit(mx27vis_aic32x4_exit);
 135
 136 MODULE_AUTHOR("Javier Martin <javier.martin@vista-silicon.com>");
 137 MODULE_DESCRIPTION("ALSA SoC AIC32X4 mx27 visstrim");
 138 MODULE_LICENSE("GPL");