413 lines
12 KiB
C
413 lines
12 KiB
C
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/*
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* mt2701-cs42448.c -- MT2701 CS42448 ALSA SoC machine driver
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*
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* Copyright (c) 2016 MediaTek Inc.
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* Author: Ir Lian <ir.lian@mediatek.com>
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* Garlic Tseng <garlic.tseng@mediatek.com>
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*
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 and
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* only version 2 as published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*/
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#include <linux/module.h>
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#include <sound/soc.h>
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#include <linux/delay.h>
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#include <linux/gpio.h>
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#include <linux/pinctrl/consumer.h>
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#include <linux/of_gpio.h>
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#include "mt2701-afe-common.h"
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struct mt2701_cs42448_private {
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int i2s1_in_mux;
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int i2s1_in_mux_gpio_sel_1;
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int i2s1_in_mux_gpio_sel_2;
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};
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static const char * const i2sin_mux_switch_text[] = {
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"ADC_SDOUT2",
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"ADC_SDOUT3",
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"I2S_IN_1",
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"I2S_IN_2",
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};
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static const struct soc_enum i2sin_mux_enum =
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SOC_ENUM_SINGLE_EXT(4, i2sin_mux_switch_text);
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static int mt2701_cs42448_i2sin1_mux_get(struct snd_kcontrol *kcontrol,
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struct snd_ctl_elem_value *ucontrol)
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{
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struct snd_soc_card *card = snd_kcontrol_chip(kcontrol);
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struct mt2701_cs42448_private *priv = snd_soc_card_get_drvdata(card);
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ucontrol->value.integer.value[0] = priv->i2s1_in_mux;
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return 0;
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}
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static int mt2701_cs42448_i2sin1_mux_set(struct snd_kcontrol *kcontrol,
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struct snd_ctl_elem_value *ucontrol)
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{
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struct snd_soc_card *card = snd_kcontrol_chip(kcontrol);
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struct mt2701_cs42448_private *priv = snd_soc_card_get_drvdata(card);
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if (ucontrol->value.integer.value[0] == priv->i2s1_in_mux)
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return 0;
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switch (ucontrol->value.integer.value[0]) {
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case 0:
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gpio_set_value(priv->i2s1_in_mux_gpio_sel_1, 0);
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gpio_set_value(priv->i2s1_in_mux_gpio_sel_2, 0);
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break;
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case 1:
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gpio_set_value(priv->i2s1_in_mux_gpio_sel_1, 1);
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gpio_set_value(priv->i2s1_in_mux_gpio_sel_2, 0);
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break;
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case 2:
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gpio_set_value(priv->i2s1_in_mux_gpio_sel_1, 0);
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gpio_set_value(priv->i2s1_in_mux_gpio_sel_2, 1);
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break;
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case 3:
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gpio_set_value(priv->i2s1_in_mux_gpio_sel_1, 1);
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gpio_set_value(priv->i2s1_in_mux_gpio_sel_2, 1);
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break;
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default:
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dev_warn(card->dev, "%s invalid setting\n", __func__);
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}
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priv->i2s1_in_mux = ucontrol->value.integer.value[0];
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return 0;
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}
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static const struct snd_soc_dapm_widget
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mt2701_cs42448_asoc_card_dapm_widgets[] = {
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SND_SOC_DAPM_LINE("Line Out Jack", NULL),
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SND_SOC_DAPM_MIC("AMIC", NULL),
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SND_SOC_DAPM_LINE("Tuner In", NULL),
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SND_SOC_DAPM_LINE("Satellite Tuner In", NULL),
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SND_SOC_DAPM_LINE("AUX In", NULL),
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};
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static const struct snd_kcontrol_new mt2701_cs42448_controls[] = {
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SOC_DAPM_PIN_SWITCH("Line Out Jack"),
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SOC_DAPM_PIN_SWITCH("AMIC"),
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SOC_DAPM_PIN_SWITCH("Tuner In"),
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SOC_DAPM_PIN_SWITCH("Satellite Tuner In"),
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SOC_DAPM_PIN_SWITCH("AUX In"),
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SOC_ENUM_EXT("I2SIN1_MUX_Switch", i2sin_mux_enum,
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mt2701_cs42448_i2sin1_mux_get,
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mt2701_cs42448_i2sin1_mux_set),
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};
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static const unsigned int mt2701_cs42448_sampling_rates[] = {48000};
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static struct snd_pcm_hw_constraint_list mt2701_cs42448_constraints_rates = {
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.count = ARRAY_SIZE(mt2701_cs42448_sampling_rates),
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.list = mt2701_cs42448_sampling_rates,
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.mask = 0,
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};
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static int mt2701_cs42448_fe_ops_startup(struct snd_pcm_substream *substream)
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{
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int err;
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err = snd_pcm_hw_constraint_list(substream->runtime, 0,
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SNDRV_PCM_HW_PARAM_RATE,
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&mt2701_cs42448_constraints_rates);
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if (err < 0) {
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dev_err(substream->pcm->card->dev,
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"%s snd_pcm_hw_constraint_list failed: 0x%x\n",
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__func__, err);
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return err;
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}
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return 0;
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}
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static struct snd_soc_ops mt2701_cs42448_48k_fe_ops = {
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.startup = mt2701_cs42448_fe_ops_startup,
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};
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static int mt2701_cs42448_be_ops_hw_params(struct snd_pcm_substream *substream,
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struct snd_pcm_hw_params *params)
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{
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struct snd_soc_pcm_runtime *rtd = substream->private_data;
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struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
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struct snd_soc_dai *codec_dai = rtd->codec_dai;
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unsigned int mclk_rate;
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unsigned int rate = params_rate(params);
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unsigned int div_mclk_over_bck = rate > 192000 ? 2 : 4;
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unsigned int div_bck_over_lrck = 64;
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mclk_rate = rate * div_bck_over_lrck * div_mclk_over_bck;
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/* mt2701 mclk */
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snd_soc_dai_set_sysclk(cpu_dai, 0, mclk_rate, SND_SOC_CLOCK_OUT);
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/* codec mclk */
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snd_soc_dai_set_sysclk(codec_dai, 0, mclk_rate, SND_SOC_CLOCK_IN);
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return 0;
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}
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static struct snd_soc_ops mt2701_cs42448_be_ops = {
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.hw_params = mt2701_cs42448_be_ops_hw_params
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};
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enum {
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DAI_LINK_FE_MULTI_CH_OUT,
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DAI_LINK_FE_PCM0_IN,
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DAI_LINK_FE_PCM1_IN,
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DAI_LINK_FE_BT_OUT,
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DAI_LINK_FE_BT_IN,
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DAI_LINK_BE_I2S0,
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DAI_LINK_BE_I2S1,
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DAI_LINK_BE_I2S2,
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DAI_LINK_BE_I2S3,
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DAI_LINK_BE_MRG_BT,
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};
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static struct snd_soc_dai_link mt2701_cs42448_dai_links[] = {
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/* FE */
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[DAI_LINK_FE_MULTI_CH_OUT] = {
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.name = "mt2701-cs42448-multi-ch-out",
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.stream_name = "mt2701-cs42448-multi-ch-out",
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.cpu_dai_name = "PCM_multi",
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.codec_name = "snd-soc-dummy",
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.codec_dai_name = "snd-soc-dummy-dai",
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.trigger = {SND_SOC_DPCM_TRIGGER_POST,
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SND_SOC_DPCM_TRIGGER_POST},
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.ops = &mt2701_cs42448_48k_fe_ops,
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.dynamic = 1,
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.dpcm_playback = 1,
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},
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[DAI_LINK_FE_PCM0_IN] = {
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.name = "mt2701-cs42448-pcm0",
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.stream_name = "mt2701-cs42448-pcm0-data-UL",
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.cpu_dai_name = "PCM0",
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.codec_name = "snd-soc-dummy",
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.codec_dai_name = "snd-soc-dummy-dai",
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.trigger = {SND_SOC_DPCM_TRIGGER_POST,
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SND_SOC_DPCM_TRIGGER_POST},
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.ops = &mt2701_cs42448_48k_fe_ops,
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.dynamic = 1,
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.dpcm_capture = 1,
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},
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[DAI_LINK_FE_PCM1_IN] = {
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.name = "mt2701-cs42448-pcm1-data-UL",
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.stream_name = "mt2701-cs42448-pcm1-data-UL",
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.cpu_dai_name = "PCM1",
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.codec_name = "snd-soc-dummy",
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.codec_dai_name = "snd-soc-dummy-dai",
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.trigger = {SND_SOC_DPCM_TRIGGER_POST,
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SND_SOC_DPCM_TRIGGER_POST},
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.ops = &mt2701_cs42448_48k_fe_ops,
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.dynamic = 1,
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.dpcm_capture = 1,
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},
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[DAI_LINK_FE_BT_OUT] = {
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.name = "mt2701-cs42448-pcm-BT-out",
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.stream_name = "mt2701-cs42448-pcm-BT",
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.cpu_dai_name = "PCM_BT_DL",
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.codec_name = "snd-soc-dummy",
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.codec_dai_name = "snd-soc-dummy-dai",
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.trigger = {SND_SOC_DPCM_TRIGGER_POST,
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SND_SOC_DPCM_TRIGGER_POST},
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.dynamic = 1,
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.dpcm_playback = 1,
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},
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[DAI_LINK_FE_BT_IN] = {
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.name = "mt2701-cs42448-pcm-BT-in",
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.stream_name = "mt2701-cs42448-pcm-BT",
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.cpu_dai_name = "PCM_BT_UL",
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.codec_name = "snd-soc-dummy",
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.codec_dai_name = "snd-soc-dummy-dai",
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.trigger = {SND_SOC_DPCM_TRIGGER_POST,
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SND_SOC_DPCM_TRIGGER_POST},
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.dynamic = 1,
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.dpcm_capture = 1,
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},
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/* BE */
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[DAI_LINK_BE_I2S0] = {
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.name = "mt2701-cs42448-I2S0",
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.cpu_dai_name = "I2S0",
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.no_pcm = 1,
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.codec_dai_name = "cs42448",
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.dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_CBS_CFS
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| SND_SOC_DAIFMT_GATED,
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.ops = &mt2701_cs42448_be_ops,
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.dpcm_playback = 1,
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.dpcm_capture = 1,
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},
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[DAI_LINK_BE_I2S1] = {
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.name = "mt2701-cs42448-I2S1",
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.cpu_dai_name = "I2S1",
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.no_pcm = 1,
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.codec_dai_name = "cs42448",
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.dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_CBS_CFS
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| SND_SOC_DAIFMT_GATED,
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.ops = &mt2701_cs42448_be_ops,
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.dpcm_playback = 1,
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.dpcm_capture = 1,
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},
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[DAI_LINK_BE_I2S2] = {
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.name = "mt2701-cs42448-I2S2",
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.cpu_dai_name = "I2S2",
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.no_pcm = 1,
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.codec_dai_name = "cs42448",
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.dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_CBS_CFS
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| SND_SOC_DAIFMT_GATED,
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.ops = &mt2701_cs42448_be_ops,
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.dpcm_playback = 1,
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.dpcm_capture = 1,
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},
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[DAI_LINK_BE_I2S3] = {
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.name = "mt2701-cs42448-I2S3",
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.cpu_dai_name = "I2S3",
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.no_pcm = 1,
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.codec_dai_name = "cs42448",
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.dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_CBS_CFS
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| SND_SOC_DAIFMT_GATED,
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.ops = &mt2701_cs42448_be_ops,
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.dpcm_playback = 1,
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.dpcm_capture = 1,
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},
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[DAI_LINK_BE_MRG_BT] = {
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.name = "mt2701-cs42448-MRG-BT",
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.cpu_dai_name = "MRG BT",
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.no_pcm = 1,
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.codec_dai_name = "bt-sco-pcm-wb",
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.dpcm_playback = 1,
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.dpcm_capture = 1,
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},
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};
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static struct snd_soc_card mt2701_cs42448_soc_card = {
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.name = "mt2701-cs42448",
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.owner = THIS_MODULE,
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.dai_link = mt2701_cs42448_dai_links,
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.num_links = ARRAY_SIZE(mt2701_cs42448_dai_links),
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.controls = mt2701_cs42448_controls,
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.num_controls = ARRAY_SIZE(mt2701_cs42448_controls),
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.dapm_widgets = mt2701_cs42448_asoc_card_dapm_widgets,
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.num_dapm_widgets = ARRAY_SIZE(mt2701_cs42448_asoc_card_dapm_widgets),
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};
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static int mt2701_cs42448_machine_probe(struct platform_device *pdev)
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{
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struct snd_soc_card *card = &mt2701_cs42448_soc_card;
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int ret;
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int i;
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struct device_node *platform_node, *codec_node, *codec_node_bt_mrg;
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struct mt2701_cs42448_private *priv =
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devm_kzalloc(&pdev->dev, sizeof(struct mt2701_cs42448_private),
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GFP_KERNEL);
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struct device *dev = &pdev->dev;
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if (!priv)
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return -ENOMEM;
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platform_node = of_parse_phandle(pdev->dev.of_node,
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"mediatek,platform", 0);
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if (!platform_node) {
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dev_err(&pdev->dev, "Property 'platform' missing or invalid\n");
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return -EINVAL;
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}
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for (i = 0; i < card->num_links; i++) {
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if (mt2701_cs42448_dai_links[i].platform_name)
|
||
|
|
continue;
|
||
|
|
mt2701_cs42448_dai_links[i].platform_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 (i = 0; i < card->num_links; i++) {
|
||
|
|
if (mt2701_cs42448_dai_links[i].codec_name)
|
||
|
|
continue;
|
||
|
|
mt2701_cs42448_dai_links[i].codec_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].codec_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",},
|
||
|
|
{}
|
||
|
|
};
|
||
|
|
#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");
|