sound/soc/fsl/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 <linux/gpio.h>
  29 #include <linux/platform_data/asoc-mx27vis.h>
  30 #include <sound/core.h>
  31 #include <sound/pcm.h>
  32 #include <sound/soc.h>
  33 #include <sound/soc-dapm.h>
  34 #include <sound/tlv.h>
  35 #include <asm/mach-types.h>
  36
  37 #include "../codecs/tlv320aic32x4.h"
  38 #include "imx-ssi.h"
  39 #include "imx-audmux.h"
  40
  41 #define MX27VIS_AMP_GAIN        0
  42 #define MX27VIS_AMP_MUTE        1
  43
  44 static int mx27vis_amp_gain;
  45 static int mx27vis_amp_mute;
  46 static int mx27vis_amp_gain0_gpio;
  47 static int mx27vis_amp_gain1_gpio;
  48 static int mx27vis_amp_mutel_gpio;
  49 static int mx27vis_amp_muter_gpio;
  50
  51 static int mx27vis_aic32x4_hw_params(struct snd_pcm_substream *substream,
  52                             struct snd_pcm_hw_params *params)
  53 {
  54         struct snd_soc_pcm_runtime *rtd = substream->private_data;
  55         struct snd_soc_dai *codec_dai = rtd->codec_dai;
  56         struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
  57         int ret;
  58
  59         ret = snd_soc_dai_set_sysclk(codec_dai, 0,
  60                                      25000000, SND_SOC_CLOCK_OUT);
  61         if (ret) {
  62                 pr_err("%s: failed setting codec sysclk\n", __func__);
  63                 return ret;
  64         }
  65
  66         ret = snd_soc_dai_set_sysclk(cpu_dai, IMX_SSP_SYS_CLK, 0,
  67                                 SND_SOC_CLOCK_IN);
  68         if (ret) {
  69                 pr_err("can't set CPU system clock IMX_SSP_SYS_CLK\n");
  70                 return ret;
  71         }
  72
  73         return 0;
  74 }
  75
  76 static struct snd_soc_ops mx27vis_aic32x4_snd_ops = {
  77         .hw_params      = mx27vis_aic32x4_hw_params,
  78 };
  79
  80 static int mx27vis_amp_set(struct snd_kcontrol *kcontrol,
  81                             struct snd_ctl_elem_value *ucontrol)
  82 {
  83         struct soc_mixer_control *mc =
  84                 (struct soc_mixer_control *)kcontrol->private_value;
  85         int value = ucontrol->value.integer.value[0];
  86         unsigned int reg = mc->reg;
  87         int max = mc->max;
  88
  89         if (value > max)
  90                 return -EINVAL;
  91
  92         switch (reg) {
  93         case MX27VIS_AMP_GAIN:
  94                 gpio_set_value(mx27vis_amp_gain0_gpio, value & 1);
  95                 gpio_set_value(mx27vis_amp_gain1_gpio, value >> 1);
  96                 mx27vis_amp_gain = value;
  97                 break;
  98         case MX27VIS_AMP_MUTE:
  99                 gpio_set_value(mx27vis_amp_mutel_gpio, value & 1);
 100                 gpio_set_value(mx27vis_amp_muter_gpio, value >> 1);
 101                 mx27vis_amp_mute = value;
 102                 break;
 103         }
 104         return 0;
 105 }
 106
 107 static int mx27vis_amp_get(struct snd_kcontrol *kcontrol,
 108                             struct snd_ctl_elem_value *ucontrol)
 109 {
 110         struct soc_mixer_control *mc =
 111                 (struct soc_mixer_control *)kcontrol->private_value;
 112         unsigned int reg = mc->reg;
 113
 114         switch (reg) {
 115         case MX27VIS_AMP_GAIN:
 116                 ucontrol->value.integer.value[0] = mx27vis_amp_gain;
 117                 break;
 118         case MX27VIS_AMP_MUTE:
 119                 ucontrol->value.integer.value[0] = mx27vis_amp_mute;
 120                 break;
 121         }
 122         return 0;
 123 }
 124
 125 /* From 6dB to 24dB in steps of 6dB */
 126 static const DECLARE_TLV_DB_SCALE(mx27vis_amp_tlv, 600, 600, 0);
 127
 128 static const struct snd_kcontrol_new mx27vis_aic32x4_controls[] = {
 129         SOC_DAPM_PIN_SWITCH("External Mic"),
 130         SOC_SINGLE_EXT_TLV("LO Ext Boost", MX27VIS_AMP_GAIN, 0, 3, 0,
 131                        mx27vis_amp_get, mx27vis_amp_set, mx27vis_amp_tlv),
 132         SOC_DOUBLE_EXT("LO Ext Mute Switch", MX27VIS_AMP_MUTE, 0, 1, 1, 0,
 133                        mx27vis_amp_get, mx27vis_amp_set),
 134 };
 135
 136 static const struct snd_soc_dapm_widget aic32x4_dapm_widgets[] = {
 137         SND_SOC_DAPM_MIC("External Mic", NULL),
 138 };
 139
 140 static const struct snd_soc_dapm_route aic32x4_dapm_routes[] = {
 141         {"Mic Bias", NULL, "External Mic"},
 142         {"IN1_R", NULL, "Mic Bias"},
 143         {"IN2_R", NULL, "Mic Bias"},
 144         {"IN3_R", NULL, "Mic Bias"},
 145         {"IN1_L", NULL, "Mic Bias"},
 146         {"IN2_L", NULL, "Mic Bias"},
 147         {"IN3_L", NULL, "Mic Bias"},
 148 };
 149
 150 static struct snd_soc_dai_link mx27vis_aic32x4_dai = {
 151         .name           = "tlv320aic32x4",
 152         .stream_name    = "TLV320AIC32X4",
 153         .codec_dai_name = "tlv320aic32x4-hifi",
 154         .platform_name  = "imx-ssi.0",
 155         .codec_name     = "tlv320aic32x4.0-0018",
 156         .cpu_dai_name   = "imx-ssi.0",
 157         .dai_fmt        = SND_SOC_DAIFMT_DSP_B | SND_SOC_DAIFMT_NB_NF |
 158                           SND_SOC_DAIFMT_CBM_CFM,
 159         .ops            = &mx27vis_aic32x4_snd_ops,
 160 };
 161
 162 static struct snd_soc_card mx27vis_aic32x4 = {
 163         .name           = "visstrim_m10-audio",
 164         .owner          = THIS_MODULE,
 165         .dai_link       = &mx27vis_aic32x4_dai,
 166         .num_links      = 1,
 167         .controls       = mx27vis_aic32x4_controls,
 168         .num_controls   = ARRAY_SIZE(mx27vis_aic32x4_controls),
 169         .dapm_widgets   = aic32x4_dapm_widgets,
 170         .num_dapm_widgets = ARRAY_SIZE(aic32x4_dapm_widgets),
 171         .dapm_routes    = aic32x4_dapm_routes,
 172         .num_dapm_routes = ARRAY_SIZE(aic32x4_dapm_routes),
 173 };
 174
 175 static int mx27vis_aic32x4_probe(struct platform_device *pdev)
 176 {
 177         struct snd_mx27vis_platform_data *pdata = pdev->dev.platform_data;
 178         int ret;
 179
 180         if (!pdata) {
 181                 dev_err(&pdev->dev, "No platform data supplied\n");
 182                 return -EINVAL;
 183         }
 184
 185         mx27vis_amp_gain0_gpio = pdata->amp_gain0_gpio;
 186         mx27vis_amp_gain1_gpio = pdata->amp_gain1_gpio;
 187         mx27vis_amp_mutel_gpio = pdata->amp_mutel_gpio;
 188         mx27vis_amp_muter_gpio = pdata->amp_muter_gpio;
 189
 190         mx27vis_aic32x4.dev = &pdev->dev;
 191         ret = snd_soc_register_card(&mx27vis_aic32x4);
 192         if (ret) {
 193                 dev_err(&pdev->dev, "snd_soc_register_card failed (%d)\n",
 194                         ret);
 195                 return ret;
 196         }
 197
 198         /* Connect SSI0 as clock slave to SSI1 external pins */
 199         imx_audmux_v1_configure_port(MX27_AUDMUX_HPCR1_SSI0,
 200                         IMX_AUDMUX_V1_PCR_SYN |
 201                         IMX_AUDMUX_V1_PCR_TFSDIR |
 202                         IMX_AUDMUX_V1_PCR_TCLKDIR |
 203                         IMX_AUDMUX_V1_PCR_TFCSEL(MX27_AUDMUX_PPCR1_SSI_PINS_1) |
 204                         IMX_AUDMUX_V1_PCR_RXDSEL(MX27_AUDMUX_PPCR1_SSI_PINS_1)
 205         );
 206         imx_audmux_v1_configure_port(MX27_AUDMUX_PPCR1_SSI_PINS_1,
 207                         IMX_AUDMUX_V1_PCR_SYN |
 208                         IMX_AUDMUX_V1_PCR_RXDSEL(MX27_AUDMUX_HPCR1_SSI0)
 209         );
 210
 211         return ret;
 212 }
 213
 214 static int mx27vis_aic32x4_remove(struct platform_device *pdev)
 215 {
 216         snd_soc_unregister_card(&mx27vis_aic32x4);
 217
 218         return 0;
 219 }
 220
 221 static struct platform_driver mx27vis_aic32x4_audio_driver = {
 222         .driver = {
 223                 .name = "mx27vis",
 224         },
 225         .probe = mx27vis_aic32x4_probe,
 226         .remove = mx27vis_aic32x4_remove,
 227 };
 228
 229 module_platform_driver(mx27vis_aic32x4_audio_driver);
 230
 231 MODULE_AUTHOR("Javier Martin <javier.martin@vista-silicon.com>");
 232 MODULE_DESCRIPTION("ALSA SoC AIC32X4 mx27 visstrim");
 233 MODULE_LICENSE("GPL");
 234 MODULE_ALIAS("platform:mx27vis");