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// SPDX-License-Identifier: GPL-2.0
/*
* mt2701-cs42448.c -- MT2701 CS42448 ALSA SoC machine driver
*
* Copyright (c) 2016 MediaTek Inc.
* Author: Ir Lian <ir.lian@mediatek.com>
* Garlic Tseng <garlic.tseng@mediatek.com>
*/
#include <linux/module.h>
#include <sound/soc.h>
#include <linux/delay.h>
#include <linux/gpio.h>
#include <linux/pinctrl/consumer.h>
#include <linux/of_gpio.h>
#include "mt2701-afe-common.h"
struct mt2701_cs42448_private {
int i2s1_in_mux;
int i2s1_in_mux_gpio_sel_1;
int i2s1_in_mux_gpio_sel_2;
};
static const char * const i2sin_mux_switch_text[] = {
"ADC_SDOUT2",
"ADC_SDOUT3",
"I2S_IN_1",
"I2S_IN_2",
};
static const struct soc_enum i2sin_mux_enum =
SOC_ENUM_SINGLE_EXT(4, i2sin_mux_switch_text);
static int mt2701_cs42448_i2sin1_mux_get(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *ucontrol)
{
struct snd_soc_card *card = snd_kcontrol_chip(kcontrol);
struct mt2701_cs42448_private *priv = snd_soc_card_get_drvdata(card);
ucontrol->value.integer.value[0] = priv->i2s1_in_mux;
return 0;
}
static int mt2701_cs42448_i2sin1_mux_set(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *ucontrol)
{
struct snd_soc_card *card = snd_kcontrol_chip(kcontrol);
struct mt2701_cs42448_private *priv = snd_soc_card_get_drvdata(card);
if (ucontrol->value.integer.value[0] == priv->i2s1_in_mux)
return 0;
switch (ucontrol->value.integer.value[0]) {
case 0:
gpio_set_value(priv->i2s1_in_mux_gpio_sel_1, 0);
gpio_set_value(priv->i2s1_in_mux_gpio_sel_2, 0);
break;
case 1:
gpio_set_value(priv->i2s1_in_mux_gpio_sel_1, 1);
gpio_set_value(priv->i2s1_in_mux_gpio_sel_2, 0);
break;
case 2:
gpio_set_value(priv->i2s1_in_mux_gpio_sel_1, 0);
gpio_set_value(priv->i2s1_in_mux_gpio_sel_2, 1);
break;
case 3:
gpio_set_value(priv->i2s1_in_mux_gpio_sel_1, 1);
gpio_set_value(priv->i2s1_in_mux_gpio_sel_2, 1);
break;
default:
dev_warn(card->dev, "%s invalid setting\n", __func__);
}
priv->i2s1_in_mux = ucontrol->value.integer.value[0];
return 0;
}
static const struct snd_soc_dapm_widget
mt2701_cs42448_asoc_card_dapm_widgets[] = {
SND_SOC_DAPM_LINE("Line Out Jack", NULL),
SND_SOC_DAPM_MIC("AMIC", NULL),
SND_SOC_DAPM_LINE("Tuner In", NULL),
SND_SOC_DAPM_LINE("Satellite Tuner In", NULL),
SND_SOC_DAPM_LINE("AUX In", NULL),
};
static const struct snd_kcontrol_new mt2701_cs42448_controls[] = {
SOC_DAPM_PIN_SWITCH("Line Out Jack"),
SOC_DAPM_PIN_SWITCH("AMIC"),
SOC_DAPM_PIN_SWITCH("Tuner In"),
SOC_DAPM_PIN_SWITCH("Satellite Tuner In"),
SOC_DAPM_PIN_SWITCH("AUX In"),
SOC_ENUM_EXT("I2SIN1_MUX_Switch", i2sin_mux_enum,
mt2701_cs42448_i2sin1_mux_get,
mt2701_cs42448_i2sin1_mux_set),
};
static const unsigned int mt2701_cs42448_sampling_rates[] = {48000};
static const struct snd_pcm_hw_constraint_list mt2701_cs42448_constraints_rates = {
.count = ARRAY_SIZE(mt2701_cs42448_sampling_rates),
.list = mt2701_cs42448_sampling_rates,
.mask = 0,
};
static int mt2701_cs42448_fe_ops_startup(struct snd_pcm_substream *substream)
{
int err;
err = snd_pcm_hw_constraint_list(substream->runtime, 0,
SNDRV_PCM_HW_PARAM_RATE,
&mt2701_cs42448_constraints_rates);
if (err < 0) {
dev_err(substream->pcm->card->dev,
"%s snd_pcm_hw_constraint_list failed: 0x%x\n",
__func__, err);
return err;
}
return 0;
}
static const struct snd_soc_ops mt2701_cs42448_48k_fe_ops = {
.startup = mt2701_cs42448_fe_ops_startup,
};
static int mt2701_cs42448_be_ops_hw_params(struct snd_pcm_substream *substream,
struct snd_pcm_hw_params *params)
{
struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream);
struct snd_soc_dai *cpu_dai = asoc_rtd_to_cpu(rtd, 0);
struct snd_soc_dai *codec_dai = asoc_rtd_to_codec(rtd, 0);
unsigned int mclk_rate;
unsigned int rate = params_rate(params);
unsigned int div_mclk_over_bck = rate > 192000 ? 2 : 4;
unsigned int div_bck_over_lrck = 64;
mclk_rate = rate * div_bck_over_lrck * div_mclk_over_bck;
/* mt2701 mclk */
snd_soc_dai_set_sysclk(cpu_dai, 0, mclk_rate, SND_SOC_CLOCK_OUT);
/* codec mclk */
snd_soc_dai_set_sysclk(codec_dai, 0, mclk_rate, SND_SOC_CLOCK_IN);
return 0;
}
static const struct snd_soc_ops mt2701_cs42448_be_ops = {
.hw_params = mt2701_cs42448_be_ops_hw_params
};
enum {
DAI_LINK_FE_MULTI_CH_OUT,
DAI_LINK_FE_PCM0_IN,
DAI_LINK_FE_PCM1_IN,
DAI_LINK_FE_BT_OUT,
DAI_LINK_FE_BT_IN,
DAI_LINK_BE_I2S0,
DAI_LINK_BE_I2S1,
DAI_LINK_BE_I2S2,
DAI_LINK_BE_I2S3,
DAI_LINK_BE_MRG_BT,
};
SND_SOC_DAILINK_DEFS(fe_multi_ch_out,
DAILINK_COMP_ARRAY(COMP_CPU("PCM_multi")),
DAILINK_COMP_ARRAY(COMP_DUMMY()),
DAILINK_COMP_ARRAY(COMP_EMPTY()));
SND_SOC_DAILINK_DEFS(fe_pcm0_in,
DAILINK_COMP_ARRAY(COMP_CPU("PCM0")),
DAILINK_COMP_ARRAY(COMP_DUMMY()),
DAILINK_COMP_ARRAY(COMP_EMPTY()));
SND_SOC_DAILINK_DEFS(fe_pcm1_in,
DAILINK_COMP_ARRAY(COMP_CPU("PCM1")),
DAILINK_COMP_ARRAY(COMP_DUMMY()),
DAILINK_COMP_ARRAY(COMP_EMPTY()));
SND_SOC_DAILINK_DEFS(fe_bt_out,
DAILINK_COMP_ARRAY(COMP_CPU("PCM_BT_DL")),
DAILINK_COMP_ARRAY(COMP_DUMMY()),
DAILINK_COMP_ARRAY(COMP_EMPTY()));
SND_SOC_DAILINK_DEFS(fe_bt_in,
DAILINK_COMP_ARRAY(COMP_CPU("PCM_BT_UL")),
DAILINK_COMP_ARRAY(COMP_DUMMY()),
DAILINK_COMP_ARRAY(COMP_EMPTY()));
SND_SOC_DAILINK_DEFS(be_i2s0,
DAILINK_COMP_ARRAY(COMP_CPU("I2S0")),
DAILINK_COMP_ARRAY(COMP_CODEC(NULL, "cs42448")),
DAILINK_COMP_ARRAY(COMP_EMPTY()));
SND_SOC_DAILINK_DEFS(be_i2s1,
DAILINK_COMP_ARRAY(COMP_CPU("I2S1")),
DAILINK_COMP_ARRAY(COMP_CODEC(NULL, "cs42448")),
DAILINK_COMP_ARRAY(COMP_EMPTY()));
SND_SOC_DAILINK_DEFS(be_i2s2,
DAILINK_COMP_ARRAY(COMP_CPU("I2S2")),
DAILINK_COMP_ARRAY(COMP_CODEC(NULL, "cs42448")),
DAILINK_COMP_ARRAY(COMP_EMPTY()));
SND_SOC_DAILINK_DEFS(be_i2s3,
DAILINK_COMP_ARRAY(COMP_CPU("I2S3")),
DAILINK_COMP_ARRAY(COMP_CODEC(NULL, "cs42448")),
DAILINK_COMP_ARRAY(COMP_EMPTY()));
SND_SOC_DAILINK_DEFS(be_mrg_bt,
DAILINK_COMP_ARRAY(COMP_CPU("MRG BT")),
DAILINK_COMP_ARRAY(COMP_CODEC(NULL, "bt-sco-pcm-wb")),
DAILINK_COMP_ARRAY(COMP_EMPTY()));
static struct snd_soc_dai_link mt2701_cs42448_dai_links[] = {
/* FE */
[DAI_LINK_FE_MULTI_CH_OUT] = {
.name = "mt2701-cs42448-multi-ch-out",
.stream_name = "mt2701-cs42448-multi-ch-out",
.trigger = {SND_SOC_DPCM_TRIGGER_POST,
SND_SOC_DPCM_TRIGGER_POST},
.ops = &mt2701_cs42448_48k_fe_ops,
.dynamic = 1,
.dpcm_playback = 1,
SND_SOC_DAILINK_REG(fe_multi_ch_out),
},
[DAI_LINK_FE_PCM0_IN] = {
.name = "mt2701-cs42448-pcm0",
.stream_name = "mt2701-cs42448-pcm0-data-UL",
.trigger = {SND_SOC_DPCM_TRIGGER_POST,
SND_SOC_DPCM_TRIGGER_POST},
.ops = &mt2701_cs42448_48k_fe_ops,
.dynamic = 1,
.dpcm_capture = 1,
SND_SOC_DAILINK_REG(fe_pcm0_in),
},
[DAI_LINK_FE_PCM1_IN] = {
.name = "mt2701-cs42448-pcm1-data-UL",
.stream_name = "mt2701-cs42448-pcm1-data-UL",
.trigger = {SND_SOC_DPCM_TRIGGER_POST,
SND_SOC_DPCM_TRIGGER_POST},
.ops = &mt2701_cs42448_48k_fe_ops,
.dynamic = 1,
.dpcm_capture = 1,
SND_SOC_DAILINK_REG(fe_pcm1_in),
},
[DAI_LINK_FE_BT_OUT] = {
.name = "mt2701-cs42448-pcm-BT-out",
.stream_name = "mt2701-cs42448-pcm-BT",
.trigger = {SND_SOC_DPCM_TRIGGER_POST,
SND_SOC_DPCM_TRIGGER_POST},
.dynamic = 1,
.dpcm_playback = 1,
SND_SOC_DAILINK_REG(fe_bt_out),
},
[DAI_LINK_FE_BT_IN] = {
.name = "mt2701-cs42448-pcm-BT-in",
.stream_name = "mt2701-cs42448-pcm-BT",
.trigger = {SND_SOC_DPCM_TRIGGER_POST,
SND_SOC_DPCM_TRIGGER_POST},
.dynamic = 1,
.dpcm_capture = 1,
SND_SOC_DAILINK_REG(fe_bt_in),
},
/* BE */
[DAI_LINK_BE_I2S0] = {
.name = "mt2701-cs42448-I2S0",
.no_pcm = 1,
.dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_CBS_CFS
| SND_SOC_DAIFMT_GATED,
.ops = &mt2701_cs42448_be_ops,
.dpcm_playback = 1,
.dpcm_capture = 1,
SND_SOC_DAILINK_REG(be_i2s0),
},
[DAI_LINK_BE_I2S1] = {
.name = "mt2701-cs42448-I2S1",
.no_pcm = 1,
.dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_CBS_CFS
| SND_SOC_DAIFMT_GATED,
.ops = &mt2701_cs42448_be_ops,
.dpcm_playback = 1,
.dpcm_capture = 1,
SND_SOC_DAILINK_REG(be_i2s1),
},
[DAI_LINK_BE_I2S2] = {
.name = "mt2701-cs42448-I2S2",
.no_pcm = 1,
.dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_CBS_CFS
| SND_SOC_DAIFMT_GATED,
.ops = &mt2701_cs42448_be_ops,
.dpcm_playback = 1,
.dpcm_capture = 1,
SND_SOC_DAILINK_REG(be_i2s2),
},
[DAI_LINK_BE_I2S3] = {
.name = "mt2701-cs42448-I2S3",
.no_pcm = 1,
.dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_CBS_CFS
| SND_SOC_DAIFMT_GATED,
.ops = &mt2701_cs42448_be_ops,
.dpcm_playback = 1,
.dpcm_capture = 1,
SND_SOC_DAILINK_REG(be_i2s3),
},
[DAI_LINK_BE_MRG_BT] = {
.name = "mt2701-cs42448-MRG-BT",
.no_pcm = 1,
.dpcm_playback = 1,
.dpcm_capture = 1,
SND_SOC_DAILINK_REG(be_mrg_bt),
},
};
static struct snd_soc_card mt2701_cs42448_soc_card = {
.name = "mt2701-cs42448",
.owner = THIS_MODULE,
.dai_link = mt2701_cs42448_dai_links,
.num_links = ARRAY_SIZE(mt2701_cs42448_dai_links),
.controls = mt2701_cs42448_controls,
.num_controls = ARRAY_SIZE(mt2701_cs42448_controls),
.dapm_widgets = mt2701_cs42448_asoc_card_dapm_widgets,
.num_dapm_widgets = ARRAY_SIZE(mt2701_cs42448_asoc_card_dapm_widgets),
};
static int mt2701_cs42448_machine_probe(struct platform_device *pdev)
{
struct snd_soc_card *card = &mt2701_cs42448_soc_card;
int ret;
int i;
struct device_node *platform_node, *codec_node, *codec_node_bt_mrg;
struct mt2701_cs42448_private *priv =
devm_kzalloc(&pdev->dev, sizeof(struct mt2701_cs42448_private),
GFP_KERNEL);
struct device *dev = &pdev->dev;
struct snd_soc_dai_link *dai_link;
if (!priv)
return -ENOMEM;
platform_node = of_parse_phandle(pdev->dev.of_node,
"mediatek,platform", 0);
if (!platform_node) {
dev_err(&pdev->dev, "Property 'platform' missing or invalid\n");
return -EINVAL;
}
for_each_card_prelinks(card, i, dai_link) {
if (dai_link->platforms->name)
continue;
dai_link->platforms->of_node = platform_node;
}
card->dev = dev;
codec_node = of_parse_phandle(pdev->dev.of_node,
"mediatek,audio-codec", 0);
if (!codec_node) {
dev_err(&pdev->dev,
"Property 'audio-codec' missing or invalid\n");
return -EINVAL;
}
for_each_card_prelinks(card, i, dai_link) {
if (dai_link->codecs->name)
continue;
dai_link->codecs->of_node = codec_node;
}
codec_node_bt_mrg = of_parse_phandle(pdev->dev.of_node,
"mediatek,audio-codec-bt-mrg", 0);
if (!codec_node_bt_mrg) {
dev_err(&pdev->dev,
"Property 'audio-codec-bt-mrg' missing or invalid\n");
return -EINVAL;
}
mt2701_cs42448_dai_links[DAI_LINK_BE_MRG_BT].codecs->of_node
= codec_node_bt_mrg;
ret = snd_soc_of_parse_audio_routing(card, "audio-routing");
if (ret) {
dev_err(&pdev->dev, "failed to parse audio-routing: %d\n", ret);
return ret;
}
priv->i2s1_in_mux_gpio_sel_1 =
of_get_named_gpio(dev->of_node, "i2s1-in-sel-gpio1", 0);
if (gpio_is_valid(priv->i2s1_in_mux_gpio_sel_1)) {
ret = devm_gpio_request(dev, priv->i2s1_in_mux_gpio_sel_1,
"i2s1_in_mux_gpio_sel_1");
if (ret)
dev_warn(&pdev->dev, "%s devm_gpio_request fail %d\n",
__func__, ret);
gpio_direction_output(priv->i2s1_in_mux_gpio_sel_1, 0);
}
priv->i2s1_in_mux_gpio_sel_2 =
of_get_named_gpio(dev->of_node, "i2s1-in-sel-gpio2", 0);
if (gpio_is_valid(priv->i2s1_in_mux_gpio_sel_2)) {
ret = devm_gpio_request(dev, priv->i2s1_in_mux_gpio_sel_2,
"i2s1_in_mux_gpio_sel_2");
if (ret)
dev_warn(&pdev->dev, "%s devm_gpio_request fail2 %d\n",
__func__, ret);
gpio_direction_output(priv->i2s1_in_mux_gpio_sel_2, 0);
}
snd_soc_card_set_drvdata(card, priv);
ret = devm_snd_soc_register_card(&pdev->dev, card);
if (ret)
dev_err(&pdev->dev, "%s snd_soc_register_card fail %d\n",
__func__, ret);
return ret;
}
#ifdef CONFIG_OF
static const struct of_device_id mt2701_cs42448_machine_dt_match[] = {
{.compatible = "mediatek,mt2701-cs42448-machine",},
{}
};
MODULE_DEVICE_TABLE(of, mt2701_cs42448_machine_dt_match);
#endif
static struct platform_driver mt2701_cs42448_machine = {
.driver = {
.name = "mt2701-cs42448",
#ifdef CONFIG_OF
.of_match_table = mt2701_cs42448_machine_dt_match,
#endif
},
.probe = mt2701_cs42448_machine_probe,
};
module_platform_driver(mt2701_cs42448_machine);
/* Module information */
MODULE_DESCRIPTION("MT2701 CS42448 ALSA SoC machine driver");
MODULE_AUTHOR("Ir Lian <ir.lian@mediatek.com>");
MODULE_LICENSE("GPL v2");
MODULE_ALIAS("mt2701 cs42448 soc card");
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