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    Subject[alsa-devel] [PATCH v5 9/9] ASoC: mediatek: Add mt2701-cs42448 driver and config option.
    Date
    Add machine driver and config option for MT2701.

    Signed-off-by: Garlic Tseng <garlic.tseng@mediatek.com>
    ---
    sound/soc/mediatek/Kconfig | 21 ++
    sound/soc/mediatek/Makefile | 1 +
    sound/soc/mediatek/mt2701/Makefile | 19 ++
    sound/soc/mediatek/mt2701/mt2701-cs42448.c | 422 +++++++++++++++++++++++++++++
    4 files changed, 463 insertions(+)
    create mode 100644 sound/soc/mediatek/mt2701/Makefile
    create mode 100644 sound/soc/mediatek/mt2701/mt2701-cs42448.c

    diff --git a/sound/soc/mediatek/Kconfig b/sound/soc/mediatek/Kconfig
    index 705904b..2fbe543 100644
    --- a/sound/soc/mediatek/Kconfig
    +++ b/sound/soc/mediatek/Kconfig
    @@ -1,6 +1,27 @@
    config SND_SOC_MEDIATEK
    tristate

    +config SND_SOC_MT2701
    + tristate "ASoC support for Mediatek MT2701 chip"
    + depends on ARCH_MEDIATEK
    + select SND_SOC_MEDIATEK
    + help
    + This adds ASoC driver for Mediatek MT2701 boards
    + that can be used with other codecs.
    + Select Y if you have such device.
    + If unsure select "N".
    +
    +config SND_SOC_MT2701_CS42448
    + tristate "ASoc Audio driver for MT2701 with CS42448 codec"
    + depends on SND_SOC_MT2701
    + select SND_SOC_CS42XX8_I2C
    + select SND_SOC_BT_SCO
    + help
    + This adds ASoC driver for Mediatek MT2701 boards
    + with the CS42448 codecs.
    + Select Y if you have such device.
    + If unsure select "N".
    +
    config SND_SOC_MT8173
    tristate "ASoC support for Mediatek MT8173 chip"
    depends on ARCH_MEDIATEK
    diff --git a/sound/soc/mediatek/Makefile b/sound/soc/mediatek/Makefile
    index 4fe8068..6bcab35 100644
    --- a/sound/soc/mediatek/Makefile
    +++ b/sound/soc/mediatek/Makefile
    @@ -1,2 +1,3 @@
    obj-$(CONFIG_SND_SOC_MEDIATEK) += common/
    +obj-$(CONFIG_SND_SOC_MT2701) += mt2701/
    obj-$(CONFIG_SND_SOC_MT8173) += mt8173/
    diff --git a/sound/soc/mediatek/mt2701/Makefile b/sound/soc/mediatek/mt2701/Makefile
    new file mode 100644
    index 0000000..31c3d04
    --- /dev/null
    +++ b/sound/soc/mediatek/mt2701/Makefile
    @@ -0,0 +1,19 @@
    +#
    +# Copyright (C) 2015 MediaTek Inc.
    +#
    +# This program is free software: you can redistribute it and/or modify
    +# it under the terms of the GNU General Public License version 2 as
    +# published by the Free Software Foundation.
    +#
    +# This program is distributed in the hope that it will be useful,
    +# but WITHOUT ANY WARRANTY; without even the implied warranty of
    +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
    +# GNU General Public License for more details.
    +#
    +
    +# platform driver
    +snd-soc-mt2701-afe-objs := mt2701-afe-pcm.o mt2701-afe-clock-ctrl.o
    +obj-$(CONFIG_SND_SOC_MT2701) += snd-soc-mt2701-afe.o
    +
    +# machine driver
    +obj-$(CONFIG_SND_SOC_MT2701_CS42448) += mt2701-cs42448.o
    diff --git a/sound/soc/mediatek/mt2701/mt2701-cs42448.c b/sound/soc/mediatek/mt2701/mt2701-cs42448.c
    new file mode 100644
    index 0000000..0e48cb9
    --- /dev/null
    +++ b/sound/soc/mediatek/mt2701/mt2701-cs42448.c
    @@ -0,0 +1,422 @@
    +/*
    + * 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>
    + *
    + *
    + * This program is free software; you can redistribute it and/or modify
    + * it under the terms of the GNU General Public License version 2 and
    + * only version 2 as published by the Free Software Foundation.
    + *
    + * 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.
    + */
    +
    +#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 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 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 = substream->private_data;
    + struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
    + struct snd_soc_dai *codec_dai = rtd->codec_dai;
    + /* codec slave, mt2701 master */
    + unsigned int fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_CBS_CFS
    + | SND_SOC_DAIFMT_CONT;
    + unsigned int mclk_rate;
    + unsigned int rate = params_rate(params);
    + unsigned int div_mclk_to_bck = rate > 192000 ? 2 : 4;
    + unsigned int div_bck_to_lrck = 64;
    +
    + mclk_rate = rate * div_bck_to_lrck * div_mclk_to_bck;
    +
    + /* mt2701 mclk */
    + snd_soc_dai_set_sysclk(cpu_dai, 0, mclk_rate, SND_SOC_CLOCK_OUT);
    + /* mt2701 bck */
    + snd_soc_dai_set_clkdiv(cpu_dai, DIV_ID_MCLK_TO_BCK, div_mclk_to_bck);
    + /* mt2701 lrck */
    + snd_soc_dai_set_clkdiv(cpu_dai, DIV_ID_BCK_TO_LRCK, div_bck_to_lrck);
    + /* mt2701 master */
    + snd_soc_dai_set_fmt(cpu_dai, fmt);
    +
    + /* codec mclk */
    + snd_soc_dai_set_sysclk(codec_dai, 0, mclk_rate, SND_SOC_CLOCK_IN);
    + /* codec slave */
    + snd_soc_dai_set_fmt(codec_dai, fmt);
    + return 0;
    +}
    +
    +static 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,
    +};
    +
    +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",
    + .cpu_dai_name = "PCM_multi",
    + .codec_name = "snd-soc-dummy",
    + .codec_dai_name = "snd-soc-dummy-dai",
    + .trigger = {SND_SOC_DPCM_TRIGGER_POST,
    + SND_SOC_DPCM_TRIGGER_POST},
    + .ops = &mt2701_cs42448_48k_fe_ops,
    + .dynamic = 1,
    + .dpcm_playback = 1,
    + },
    + [DAI_LINK_FE_PCM0_IN] = {
    + .name = "mt2701-cs42448-pcm0",
    + .stream_name = "mt2701-cs42448-pcm0-data-UL",
    + .cpu_dai_name = "PCM0",
    + .codec_name = "snd-soc-dummy",
    + .codec_dai_name = "snd-soc-dummy-dai",
    + .trigger = {SND_SOC_DPCM_TRIGGER_POST,
    + SND_SOC_DPCM_TRIGGER_POST},
    + .ops = &mt2701_cs42448_48k_fe_ops,
    + .dynamic = 1,
    + .dpcm_capture = 1,
    + },
    + [DAI_LINK_FE_PCM1_IN] = {
    + .name = "mt2701-cs42448-pcm1-data-UL",
    + .stream_name = "mt2701-cs42448-pcm1-data-UL",
    + .cpu_dai_name = "PCM1",
    + .codec_name = "snd-soc-dummy",
    + .codec_dai_name = "snd-soc-dummy-dai",
    + .trigger = {SND_SOC_DPCM_TRIGGER_POST,
    + SND_SOC_DPCM_TRIGGER_POST},
    + .ops = &mt2701_cs42448_48k_fe_ops,
    + .dynamic = 1,
    + .dpcm_capture = 1,
    + },
    + [DAI_LINK_FE_BT_OUT] = {
    + .name = "mt2701-cs42448-pcm-BT-out",
    + .stream_name = "mt2701-cs42448-pcm-BT",
    + .cpu_dai_name = "PCM_BT_DL",
    + .codec_name = "snd-soc-dummy",
    + .codec_dai_name = "snd-soc-dummy-dai",
    + .trigger = {SND_SOC_DPCM_TRIGGER_POST,
    + SND_SOC_DPCM_TRIGGER_POST},
    + .dynamic = 1,
    + .dpcm_playback = 1,
    + },
    + [DAI_LINK_FE_BT_IN] = {
    + .name = "mt2701-cs42448-pcm-BT-in",
    + .stream_name = "mt2701-cs42448-pcm-BT",
    + .cpu_dai_name = "PCM_BT_UL",
    + .codec_name = "snd-soc-dummy",
    + .codec_dai_name = "snd-soc-dummy-dai",
    + .trigger = {SND_SOC_DPCM_TRIGGER_POST,
    + SND_SOC_DPCM_TRIGGER_POST},
    + .dynamic = 1,
    + .dpcm_capture = 1,
    + },
    + /* BE */
    + [DAI_LINK_BE_I2S0] = {
    + .name = "mt2701-cs42448-I2S0",
    + .cpu_dai_name = "I2S0",
    + .no_pcm = 1,
    + .codec_dai_name = "cs42448",
    + .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,
    + },
    + [DAI_LINK_BE_I2S1] = {
    + .name = "mt2701-cs42448-I2S1",
    + .cpu_dai_name = "I2S1",
    + .no_pcm = 1,
    + .codec_dai_name = "cs42448",
    + .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,
    + },
    + [DAI_LINK_BE_I2S2] = {
    + .name = "mt2701-cs42448-I2S2",
    + .cpu_dai_name = "I2S2",
    + .no_pcm = 1,
    + .codec_dai_name = "cs42448",
    + .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,
    + },
    + [DAI_LINK_BE_I2S3] = {
    + .name = "mt2701-cs42448-I2S3",
    + .cpu_dai_name = "I2S3",
    + .no_pcm = 1,
    + .codec_dai_name = "cs42448",
    + .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,
    + },
    + [DAI_LINK_BE_MRG_BT] = {
    + .name = "mt2701-cs42448-MRG-BT",
    + .cpu_dai_name = "MRG BT",
    + .no_pcm = 1,
    + .codec_dai_name = "bt-sco-pcm",
    + .dpcm_playback = 1,
    + .dpcm_capture = 1,
    + },
    +};
    +
    +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;
    +
    + 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 (i = 0; i < card->num_links; i++) {
    + 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");
    --
    1.9.1
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      Last update: 2016-06-17 10:21    [W:4.583 / U:0.432 seconds]
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