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         u32 dai_format;
  59
  60         dai_format = SND_SOC_DAIFMT_DSP_B | SND_SOC_DAIFMT_NB_NF |
  61                 SND_SOC_DAIFMT_CBM_CFM;
  62
  63         /* set codec DAI configuration */
  64         snd_soc_dai_set_fmt(codec_dai, dai_format);
  65
  66         /* set cpu DAI configuration */
  67         snd_soc_dai_set_fmt(cpu_dai, dai_format);
  68
  69         ret = snd_soc_dai_set_sysclk(codec_dai, 0,
  70                                      25000000, SND_SOC_CLOCK_OUT);
  71         if (ret) {
  72                 pr_err("%s: failed setting codec sysclk\n", __func__);
  73                 return ret;
  74         }
  75
  76         ret = snd_soc_dai_set_sysclk(cpu_dai, IMX_SSP_SYS_CLK, 0,
  77                                 SND_SOC_CLOCK_IN);
  78         if (ret) {
  79                 pr_err("can't set CPU system clock IMX_SSP_SYS_CLK\n");
  80                 return ret;
  81         }
  82
  83         return 0;
  84 }
  85
  86 static struct snd_soc_ops mx27vis_aic32x4_snd_ops = {
  87         .hw_params      = mx27vis_aic32x4_hw_params,
  88 };
  89
  90 static int mx27vis_amp_set(struct snd_kcontrol *kcontrol,
  91                             struct snd_ctl_elem_value *ucontrol)
  92 {
  93         struct soc_mixer_control *mc =
  94                 (struct soc_mixer_control *)kcontrol->private_value;
  95         int value = ucontrol->value.integer.value[0];
  96         unsigned int reg = mc->reg;
  97         int max = mc->max;
  98
  99         if (value > max)
 100                 return -EINVAL;
 101
 102         switch (reg) {
 103         case MX27VIS_AMP_GAIN:
 104                 gpio_set_value(mx27vis_amp_gain0_gpio, value & 1);
 105                 gpio_set_value(mx27vis_amp_gain1_gpio, value >> 1);
 106                 mx27vis_amp_gain = value;
 107                 break;
 108         case MX27VIS_AMP_MUTE:
 109                 gpio_set_value(mx27vis_amp_mutel_gpio, value & 1);
 110                 gpio_set_value(mx27vis_amp_muter_gpio, value >> 1);
 111                 mx27vis_amp_mute = value;
 112                 break;
 113         }
 114         return 0;
 115 }
 116
 117 static int mx27vis_amp_get(struct snd_kcontrol *kcontrol,
 118                             struct snd_ctl_elem_value *ucontrol)
 119 {
 120         struct soc_mixer_control *mc =
 121                 (struct soc_mixer_control *)kcontrol->private_value;
 122         unsigned int reg = mc->reg;
 123
 124         switch (reg) {
 125         case MX27VIS_AMP_GAIN:
 126                 ucontrol->value.integer.value[0] = mx27vis_amp_gain;
 127                 break;
 128         case MX27VIS_AMP_MUTE:
 129                 ucontrol->value.integer.value[0] = mx27vis_amp_mute;
 130                 break;
 131         }
 132         return 0;
 133 }
 134
 135 /* From 6dB to 24dB in steps of 6dB */
 136 static const DECLARE_TLV_DB_SCALE(mx27vis_amp_tlv, 600, 600, 0);
 137
 138 static const struct snd_kcontrol_new mx27vis_aic32x4_controls[] = {
 139         SOC_DAPM_PIN_SWITCH("External Mic"),
 140         SOC_SINGLE_EXT_TLV("LO Ext Boost", MX27VIS_AMP_GAIN, 0, 3, 0,
 141                        mx27vis_amp_get, mx27vis_amp_set, mx27vis_amp_tlv),
 142         SOC_DOUBLE_EXT("LO Ext Mute Switch", MX27VIS_AMP_MUTE, 0, 1, 1, 0,
 143                        mx27vis_amp_get, mx27vis_amp_set),
 144 };
 145
 146 static const struct snd_soc_dapm_widget aic32x4_dapm_widgets[] = {
 147         SND_SOC_DAPM_MIC("External Mic", NULL),
 148 };
 149
 150 static const struct snd_soc_dapm_route aic32x4_dapm_routes[] = {
 151         {"Mic Bias", NULL, "External Mic"},
 152         {"IN1_R", NULL, "Mic Bias"},
 153         {"IN2_R", NULL, "Mic Bias"},
 154         {"IN3_R", NULL, "Mic Bias"},
 155         {"IN1_L", NULL, "Mic Bias"},
 156         {"IN2_L", NULL, "Mic Bias"},
 157         {"IN3_L", NULL, "Mic Bias"},
 158 };
 159
 160 static struct snd_soc_dai_link mx27vis_aic32x4_dai = {
 161         .name           = "tlv320aic32x4",
 162         .stream_name    = "TLV320AIC32X4",
 163         .codec_dai_name = "tlv320aic32x4-hifi",
 164         .platform_name  = "imx-ssi.0",
 165         .codec_name     = "tlv320aic32x4.0-0018",
 166         .cpu_dai_name   = "imx-ssi.0",
 167         .ops            = &mx27vis_aic32x4_snd_ops,
 168 };
 169
 170 static struct snd_soc_card mx27vis_aic32x4 = {
 171         .name           = "visstrim_m10-audio",
 172         .owner          = THIS_MODULE,
 173         .dai_link       = &mx27vis_aic32x4_dai,
 174         .num_links      = 1,
 175         .controls       = mx27vis_aic32x4_controls,
 176         .num_controls   = ARRAY_SIZE(mx27vis_aic32x4_controls),
 177         .dapm_widgets   = aic32x4_dapm_widgets,
 178         .num_dapm_widgets = ARRAY_SIZE(aic32x4_dapm_widgets),
 179         .dapm_routes    = aic32x4_dapm_routes,
 180         .num_dapm_routes = ARRAY_SIZE(aic32x4_dapm_routes),
 181 };
 182
 183 static int mx27vis_aic32x4_probe(struct platform_device *pdev)
 184 {
 185         struct snd_mx27vis_platform_data *pdata = pdev->dev.platform_data;
 186         int ret;
 187
 188         if (!pdata) {
 189                 dev_err(&pdev->dev, "No platform data supplied\n");
 190                 return -EINVAL;
 191         }
 192
 193         mx27vis_amp_gain0_gpio = pdata->amp_gain0_gpio;
 194         mx27vis_amp_gain1_gpio = pdata->amp_gain1_gpio;
 195         mx27vis_amp_mutel_gpio = pdata->amp_mutel_gpio;
 196         mx27vis_amp_muter_gpio = pdata->amp_muter_gpio;
 197
 198         mx27vis_aic32x4.dev = &pdev->dev;
 199         ret = snd_soc_register_card(&mx27vis_aic32x4);
 200         if (ret) {
 201                 dev_err(&pdev->dev, "snd_soc_register_card failed (%d)\n",
 202                         ret);
 203                 return ret;
 204         }
 205
 206         /* Connect SSI0 as clock slave to SSI1 external pins */
 207         imx_audmux_v1_configure_port(MX27_AUDMUX_HPCR1_SSI0,
 208                         IMX_AUDMUX_V1_PCR_SYN |
 209                         IMX_AUDMUX_V1_PCR_TFSDIR |
 210                         IMX_AUDMUX_V1_PCR_TCLKDIR |
 211                         IMX_AUDMUX_V1_PCR_TFCSEL(MX27_AUDMUX_PPCR1_SSI_PINS_1) |
 212                         IMX_AUDMUX_V1_PCR_RXDSEL(MX27_AUDMUX_PPCR1_SSI_PINS_1)
 213         );
 214         imx_audmux_v1_configure_port(MX27_AUDMUX_PPCR1_SSI_PINS_1,
 215                         IMX_AUDMUX_V1_PCR_SYN |
 216                         IMX_AUDMUX_V1_PCR_RXDSEL(MX27_AUDMUX_HPCR1_SSI0)
 217         );
 218
 219         return ret;
 220 }
 221
 222 static int mx27vis_aic32x4_remove(struct platform_device *pdev)
 223 {
 224         snd_soc_unregister_card(&mx27vis_aic32x4);
 225
 226         return 0;
 227 }
 228
 229 static struct platform_driver mx27vis_aic32x4_audio_driver = {
 230         .driver = {
 231                 .name = "mx27vis",
 232         },
 233         .probe = mx27vis_aic32x4_probe,
 234         .remove = mx27vis_aic32x4_remove,
 235 };
 236
 237 module_platform_driver(mx27vis_aic32x4_audio_driver);
 238
 239 MODULE_AUTHOR("Javier Martin <javier.martin@vista-silicon.com>");
 240 MODULE_DESCRIPTION("ALSA SoC AIC32X4 mx27 visstrim");
 241 MODULE_LICENSE("GPL");
 242 MODULE_ALIAS("platform:mx27vis");