--- /dev/null
+/*
+ * 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");
projects / linux-beck.git / commitdiff