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mx27vis-aic32x4.c
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/*
* mx27vis-aic32x4.c
*
* Copyright 2011 Vista Silicon S.L.
*
* Author: Javier Martin <[email protected]>
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the
* Free Software Foundation; either version 2 of the License, or (at your
* option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
* MA 02110-1301, USA.
*/
#include <linux/module.h>
#include <linux/moduleparam.h>
#include <linux/device.h>
#include <linux/i2c.h>
#include <linux/gpio.h>
#include <linux/platform_data/asoc-mx27vis.h>
#include <sound/core.h>
#include <sound/pcm.h>
#include <sound/soc.h>
#include <sound/soc-dapm.h>
#include <sound/tlv.h>
#include <asm/mach-types.h>
#include "../codecs/tlv320aic32x4.h"
#include "imx-ssi.h"
#include "imx-audmux.h"
#define MX27VIS_AMP_GAIN 0
#define MX27VIS_AMP_MUTE 1
static int mx27vis_amp_gain;
static int mx27vis_amp_mute;
static int mx27vis_amp_gain0_gpio;
static int mx27vis_amp_gain1_gpio;
static int mx27vis_amp_mutel_gpio;
static int mx27vis_amp_muter_gpio;
static int mx27vis_aic32x4_hw_params(struct snd_pcm_substream *substream,
struct snd_pcm_hw_params *params)
{
struct snd_soc_pcm_runtime *rtd = substream->private_data;
struct snd_soc_dai *codec_dai = rtd->codec_dai;
struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
int ret;
ret = snd_soc_dai_set_sysclk(codec_dai, 0,
25000000, SND_SOC_CLOCK_OUT);
if (ret) {
pr_err("%s: failed setting codec sysclk\n", __func__);
return ret;
}
ret = snd_soc_dai_set_sysclk(cpu_dai, IMX_SSP_SYS_CLK, 0,
SND_SOC_CLOCK_IN);
if (ret) {
pr_err("can't set CPU system clock IMX_SSP_SYS_CLK\n");
return ret;
}
return 0;
}
static const struct snd_soc_ops mx27vis_aic32x4_snd_ops = {
.hw_params = mx27vis_aic32x4_hw_params,
};
static int mx27vis_amp_set(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *ucontrol)
{
struct soc_mixer_control *mc =
(struct soc_mixer_control *)kcontrol->private_value;
int value = ucontrol->value.integer.value[0];
unsigned int reg = mc->reg;
int max = mc->max;
if (value > max)
return -EINVAL;
switch (reg) {
case MX27VIS_AMP_GAIN:
gpio_set_value(mx27vis_amp_gain0_gpio, value & 1);
gpio_set_value(mx27vis_amp_gain1_gpio, value >> 1);
mx27vis_amp_gain = value;
break;
case MX27VIS_AMP_MUTE:
gpio_set_value(mx27vis_amp_mutel_gpio, value & 1);
gpio_set_value(mx27vis_amp_muter_gpio, value >> 1);
mx27vis_amp_mute = value;
break;
}
return 0;
}
static int mx27vis_amp_get(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *ucontrol)
{
struct soc_mixer_control *mc =
(struct soc_mixer_control *)kcontrol->private_value;
unsigned int reg = mc->reg;
switch (reg) {
case MX27VIS_AMP_GAIN:
ucontrol->value.integer.value[0] = mx27vis_amp_gain;
break;
case MX27VIS_AMP_MUTE:
ucontrol->value.integer.value[0] = mx27vis_amp_mute;
break;
}
return 0;
}
/* From 6dB to 24dB in steps of 6dB */
static const DECLARE_TLV_DB_SCALE(mx27vis_amp_tlv, 600, 600, 0);
static const struct snd_kcontrol_new mx27vis_aic32x4_controls[] = {
SOC_DAPM_PIN_SWITCH("External Mic"),
SOC_SINGLE_EXT_TLV("LO Ext Boost", MX27VIS_AMP_GAIN, 0, 3, 0,
mx27vis_amp_get, mx27vis_amp_set, mx27vis_amp_tlv),
SOC_DOUBLE_EXT("LO Ext Mute Switch", MX27VIS_AMP_MUTE, 0, 1, 1, 0,
mx27vis_amp_get, mx27vis_amp_set),
};
static const struct snd_soc_dapm_widget aic32x4_dapm_widgets[] = {
SND_SOC_DAPM_MIC("External Mic", NULL),
};
static const struct snd_soc_dapm_route aic32x4_dapm_routes[] = {
{"Mic Bias", NULL, "External Mic"},
{"IN1_R", NULL, "Mic Bias"},
{"IN2_R", NULL, "Mic Bias"},
{"IN3_R", NULL, "Mic Bias"},
{"IN1_L", NULL, "Mic Bias"},
{"IN2_L", NULL, "Mic Bias"},
{"IN3_L", NULL, "Mic Bias"},
};
static struct snd_soc_dai_link mx27vis_aic32x4_dai = {
.name = "tlv320aic32x4",
.stream_name = "TLV320AIC32X4",
.codec_dai_name = "tlv320aic32x4-hifi",
.platform_name = "imx-ssi.0",
.codec_name = "tlv320aic32x4.0-0018",
.cpu_dai_name = "imx-ssi.0",
.dai_fmt = SND_SOC_DAIFMT_DSP_B | SND_SOC_DAIFMT_NB_NF |
SND_SOC_DAIFMT_CBM_CFM,
.ops = &mx27vis_aic32x4_snd_ops,
};
static struct snd_soc_card mx27vis_aic32x4 = {
.name = "visstrim_m10-audio",
.owner = THIS_MODULE,
.dai_link = &mx27vis_aic32x4_dai,
.num_links = 1,
.controls = mx27vis_aic32x4_controls,
.num_controls = ARRAY_SIZE(mx27vis_aic32x4_controls),
.dapm_widgets = aic32x4_dapm_widgets,
.num_dapm_widgets = ARRAY_SIZE(aic32x4_dapm_widgets),
.dapm_routes = aic32x4_dapm_routes,
.num_dapm_routes = ARRAY_SIZE(aic32x4_dapm_routes),
};
static int mx27vis_aic32x4_probe(struct platform_device *pdev)
{
struct snd_mx27vis_platform_data *pdata = pdev->dev.platform_data;
int ret;
if (!pdata) {
dev_err(&pdev->dev, "No platform data supplied\n");
return -EINVAL;
}
mx27vis_amp_gain0_gpio = pdata->amp_gain0_gpio;
mx27vis_amp_gain1_gpio = pdata->amp_gain1_gpio;
mx27vis_amp_mutel_gpio = pdata->amp_mutel_gpio;
mx27vis_amp_muter_gpio = pdata->amp_muter_gpio;
mx27vis_aic32x4.dev = &pdev->dev;
ret = snd_soc_register_card(&mx27vis_aic32x4);
if (ret) {
dev_err(&pdev->dev, "snd_soc_register_card failed (%d)\n",
ret);
return ret;
}
/* Connect SSI0 as clock slave to SSI1 external pins */
imx_audmux_v1_configure_port(MX27_AUDMUX_HPCR1_SSI0,
IMX_AUDMUX_V1_PCR_SYN |
IMX_AUDMUX_V1_PCR_TFSDIR |
IMX_AUDMUX_V1_PCR_TCLKDIR |
IMX_AUDMUX_V1_PCR_TFCSEL(MX27_AUDMUX_PPCR1_SSI_PINS_1) |
IMX_AUDMUX_V1_PCR_RXDSEL(MX27_AUDMUX_PPCR1_SSI_PINS_1)
);
imx_audmux_v1_configure_port(MX27_AUDMUX_PPCR1_SSI_PINS_1,
IMX_AUDMUX_V1_PCR_SYN |
IMX_AUDMUX_V1_PCR_RXDSEL(MX27_AUDMUX_HPCR1_SSI0)
);
return ret;
}
static int mx27vis_aic32x4_remove(struct platform_device *pdev)
{
snd_soc_unregister_card(&mx27vis_aic32x4);
return 0;
}
static struct platform_driver mx27vis_aic32x4_audio_driver = {
.driver = {
.name = "mx27vis",
},
.probe = mx27vis_aic32x4_probe,
.remove = mx27vis_aic32x4_remove,
};
module_platform_driver(mx27vis_aic32x4_audio_driver);
MODULE_AUTHOR("Javier Martin <[email protected]>");
MODULE_DESCRIPTION("ALSA SoC AIC32X4 mx27 visstrim");
MODULE_LICENSE("GPL");
MODULE_ALIAS("platform:mx27vis");