ASoC: mediatek: Add mt2701-cs42448 driver and config option.

Add machine driver and config option for MT2701.

Signed-off-by: Garlic Tseng <garlic.tseng@mediatek.com>
Signed-off-by: Mark Brown <broonie@kernel.org>

4 files changed, 453 insertions, 0 deletions

diff --git a/sound/soc/mediatek/Kconfig b/sound/soc/mediatek/Kconfig
index 705904ba10f7..2fbe5434f03b 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 4fe8068542f1..6bcab35dc828 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-$(CONFIG_SND_SOC_MT8173) += mt8173/
diff --git a/sound/soc/mediatek/mt2701/Makefile b/sound/soc/mediatek/mt2701/Makefile
new file mode 100644
index 000000000000..31c3d04d4942
--- /dev/null
+++ b/sound/soc/mediatek/mt2701/Makefile
@@ -0,0 +1,19 @@
+#
+# Copyright (C) 2015 MediaTek Inc.
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License version 2 as
+# published by the Free Software Foundation.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+# GNU General Public License for more details.
+#
+
+# platform driver
+snd-soc-mt2701-afe-objs := mt2701-afe-pcm.o mt2701-afe-clock-ctrl.o
+obj-$(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 000000000000..1e7e8d43fd8a
--- /dev/null
+++ b/sound/soc/mediatek/mt2701/mt2701-cs42448.c
@@ -0,0 +1,412 @@
+/*
+ * 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;
+        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 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-wb",
+                .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");