1 files changed, 453 insertions, 0 deletions
diff --git a/sound/soc/qcom/sc7280.c b/sound/soc/qcom/sc7280.c
new file mode 100644
index 000000000000..d36f029b7888
--- /dev/null
+++ b/sound/soc/qcom/sc7280.c
@@ -0,0 +1,453 @@
+// SPDX-License-Identifier: GPL-2.0-only
+//
+// Copyright (c) 2020-2021, The Linux Foundation. All rights reserved.
+//
+// ALSA SoC Machine driver for sc7280
+
+#include <dt-bindings/sound/qcom,lpass.h>
+#include <dt-bindings/sound/qcom,q6afe.h>
+#include <linux/input.h>
+#include <linux/mod_devicetable.h>
+#include <linux/module.h>
+#include <linux/platform_device.h>
+#include <sound/core.h>
+#include <sound/jack.h>
+#include <sound/pcm.h>
+#include <sound/soc.h>
+#include <sound/rt5682s.h>
+#include <linux/soundwire/sdw.h>
+#include <sound/pcm_params.h>
+
+#include "../codecs/rt5682.h"
+#include "../codecs/rt5682s.h"
+#include "common.h"
+#include "lpass.h"
+#include "qdsp6/q6afe.h"
+
+#define DEFAULT_MCLK_RATE              19200000
+#define RT5682_PLL_FREQ (48000 * 512)
+#define MI2S_BCLK_RATE		1536000
+
+struct sc7280_snd_data {
+	struct snd_soc_card card;
+	struct sdw_stream_runtime *sruntime[LPASS_MAX_PORTS];
+	u32 pri_mi2s_clk_count;
+	struct snd_soc_jack hs_jack;
+	struct snd_soc_jack hdmi_jack;
+	bool jack_setup;
+	bool stream_prepared[LPASS_MAX_PORTS];
+};
+
+static void sc7280_jack_free(struct snd_jack *jack)
+{
+	struct snd_soc_component *component = jack->private_data;
+
+	snd_soc_component_set_jack(component, NULL, NULL);
+}
+
+static struct snd_soc_jack_pin sc7280_jack_pins[] = {
+	{
+		.pin = "Headphone Jack",
+		.mask = SND_JACK_HEADPHONE,
+	},
+	{
+		.pin = "Headset Mic",
+		.mask = SND_JACK_MICROPHONE,
+	},
+};
+
+static int sc7280_headset_init(struct snd_soc_pcm_runtime *rtd)
+{
+	struct snd_soc_card *card = rtd->card;
+	struct sc7280_snd_data *pdata = snd_soc_card_get_drvdata(card);
+	struct snd_soc_dai *codec_dai = snd_soc_rtd_to_codec(rtd, 0);
+	struct snd_soc_dai *cpu_dai = snd_soc_rtd_to_cpu(rtd, 0);
+	struct snd_soc_component *component = codec_dai->component;
+	struct snd_jack *jack;
+	int rval, i;
+
+	if (!pdata->jack_setup) {
+		rval = snd_soc_card_jack_new_pins(card, "Headset Jack",
+						  SND_JACK_HEADSET | SND_JACK_LINEOUT |
+						  SND_JACK_MECHANICAL |
+						  SND_JACK_BTN_0 | SND_JACK_BTN_1 |
+						  SND_JACK_BTN_2 | SND_JACK_BTN_3 |
+						  SND_JACK_BTN_4 | SND_JACK_BTN_5,
+						  &pdata->hs_jack,
+						  sc7280_jack_pins,
+						  ARRAY_SIZE(sc7280_jack_pins));
+
+		if (rval < 0) {
+			dev_err(card->dev, "Unable to add Headset Jack\n");
+			return rval;
+		}
+
+		jack = pdata->hs_jack.jack;
+
+		snd_jack_set_key(jack, SND_JACK_BTN_0, KEY_PLAYPAUSE);
+		snd_jack_set_key(jack, SND_JACK_BTN_1, KEY_VOICECOMMAND);
+		snd_jack_set_key(jack, SND_JACK_BTN_2, KEY_VOLUMEUP);
+		snd_jack_set_key(jack, SND_JACK_BTN_3, KEY_VOLUMEDOWN);
+
+		jack->private_data = component;
+		jack->private_free = sc7280_jack_free;
+		pdata->jack_setup = true;
+	}
+	switch (cpu_dai->id) {
+	case MI2S_PRIMARY:
+	case LPASS_CDC_DMA_RX0:
+	case LPASS_CDC_DMA_TX3:
+	case TX_CODEC_DMA_TX_3:
+		for_each_rtd_codec_dais(rtd, i, codec_dai) {
+			rval = snd_soc_component_set_jack(component, &pdata->hs_jack, NULL);
+			if (rval != 0 && rval != -ENOTSUPP) {
+				dev_err(card->dev, "Failed to set jack: %d\n", rval);
+				return rval;
+			}
+		}
+		break;
+	default:
+		break;
+	}
+
+	return 0;
+}
+
+static int sc7280_hdmi_init(struct snd_soc_pcm_runtime *rtd)
+{
+	struct snd_soc_card *card = rtd->card;
+	struct sc7280_snd_data *pdata = snd_soc_card_get_drvdata(card);
+	struct snd_soc_dai *codec_dai = snd_soc_rtd_to_codec(rtd, 0);
+	struct snd_soc_component *component = codec_dai->component;
+	struct snd_jack *jack;
+	int rval;
+
+	rval = snd_soc_card_jack_new(card, "HDMI Jack",	SND_JACK_LINEOUT,
+				     &pdata->hdmi_jack);
+
+	if (rval < 0) {
+		dev_err(card->dev, "Unable to add HDMI Jack\n");
+		return rval;
+	}
+
+	jack = pdata->hdmi_jack.jack;
+	jack->private_data = component;
+	jack->private_free = sc7280_jack_free;
+
+	return snd_soc_component_set_jack(component, &pdata->hdmi_jack, NULL);
+}
+
+static int sc7280_rt5682_init(struct snd_soc_pcm_runtime *rtd)
+{
+	struct snd_soc_dai *cpu_dai = snd_soc_rtd_to_cpu(rtd, 0);
+	struct snd_soc_dai *codec_dai = snd_soc_rtd_to_codec(rtd, 0);
+	struct snd_soc_card *card = rtd->card;
+	struct sc7280_snd_data *data = snd_soc_card_get_drvdata(card);
+	int ret;
+
+	if (++data->pri_mi2s_clk_count == 1) {
+		snd_soc_dai_set_sysclk(cpu_dai,
+			LPASS_MCLK0,
+			DEFAULT_MCLK_RATE,
+			SNDRV_PCM_STREAM_PLAYBACK);
+	}
+	snd_soc_dai_set_fmt(codec_dai,
+				SND_SOC_DAIFMT_CBC_CFC |
+				SND_SOC_DAIFMT_NB_NF |
+				SND_SOC_DAIFMT_I2S);
+
+	ret = snd_soc_dai_set_pll(codec_dai, RT5682S_PLL2, RT5682S_PLL_S_MCLK,
+					DEFAULT_MCLK_RATE, RT5682_PLL_FREQ);
+	if (ret) {
+		dev_err(rtd->dev, "can't set codec pll: %d\n", ret);
+		return ret;
+	}
+
+	ret = snd_soc_dai_set_sysclk(codec_dai, RT5682S_SCLK_S_PLL2,
+					RT5682_PLL_FREQ,
+					SND_SOC_CLOCK_IN);
+
+	if (ret) {
+		dev_err(rtd->dev, "snd_soc_dai_set_sysclk err = %d\n",
+			ret);
+		return ret;
+	}
+
+	return 0;
+}
+
+static int sc7280_init(struct snd_soc_pcm_runtime *rtd)
+{
+	struct snd_soc_dai *cpu_dai = snd_soc_rtd_to_cpu(rtd, 0);
+
+	switch (cpu_dai->id) {
+	case MI2S_PRIMARY:
+	case LPASS_CDC_DMA_TX3:
+	case TX_CODEC_DMA_TX_3:
+		return sc7280_headset_init(rtd);
+	case LPASS_CDC_DMA_RX0:
+	case LPASS_CDC_DMA_VA_TX0:
+	case MI2S_SECONDARY:
+	case RX_CODEC_DMA_RX_0:
+	case SECONDARY_MI2S_RX:
+	case VA_CODEC_DMA_TX_0:
+		return 0;
+	case LPASS_DP_RX:
+		return sc7280_hdmi_init(rtd);
+	default:
+		dev_err(rtd->dev, "%s: invalid dai id 0x%x\n", __func__, cpu_dai->id);
+	}
+
+	return -EINVAL;
+}
+
+static int sc7280_snd_hw_params(struct snd_pcm_substream *substream,
+				struct snd_pcm_hw_params *params)
+{
+	struct snd_pcm_runtime *runtime = substream->runtime;
+	struct snd_soc_pcm_runtime *rtd = substream->private_data;
+	struct snd_soc_dai *codec_dai;
+	const struct snd_soc_dai *cpu_dai = snd_soc_rtd_to_cpu(rtd, 0);
+	struct sc7280_snd_data *pdata = snd_soc_card_get_drvdata(rtd->card);
+	struct sdw_stream_runtime *sruntime;
+	int i;
+
+	if (!rtd->dai_link->no_pcm) {
+		snd_pcm_hw_constraint_minmax(runtime, SNDRV_PCM_HW_PARAM_CHANNELS, 2, 2);
+		snd_pcm_hw_constraint_minmax(runtime, SNDRV_PCM_HW_PARAM_RATE, 48000, 48000);
+	}
+
+	switch (cpu_dai->id) {
+	case LPASS_CDC_DMA_TX3:
+	case LPASS_CDC_DMA_RX0:
+	case RX_CODEC_DMA_RX_0:
+	case SECONDARY_MI2S_RX:
+	case TX_CODEC_DMA_TX_3:
+	case VA_CODEC_DMA_TX_0:
+		for_each_rtd_codec_dais(rtd, i, codec_dai) {
+			sruntime = snd_soc_dai_get_stream(codec_dai, substream->stream);
+			if (sruntime != ERR_PTR(-ENOTSUPP))
+				pdata->sruntime[cpu_dai->id] = sruntime;
+		}
+		break;
+	}
+
+	return 0;
+}
+
+static int sc7280_snd_swr_prepare(struct snd_pcm_substream *substream)
+{
+	struct snd_soc_pcm_runtime *rtd = substream->private_data;
+	const struct snd_soc_dai *cpu_dai = snd_soc_rtd_to_cpu(rtd, 0);
+	struct sc7280_snd_data *data = snd_soc_card_get_drvdata(rtd->card);
+	struct sdw_stream_runtime *sruntime = data->sruntime[cpu_dai->id];
+	int ret;
+
+	if (!sruntime)
+		return 0;
+
+	if (data->stream_prepared[cpu_dai->id]) {
+		sdw_disable_stream(sruntime);
+		sdw_deprepare_stream(sruntime);
+		data->stream_prepared[cpu_dai->id] = false;
+	}
+
+	ret = sdw_prepare_stream(sruntime);
+	if (ret)
+		return ret;
+
+	ret = sdw_enable_stream(sruntime);
+	if (ret) {
+		sdw_deprepare_stream(sruntime);
+		return ret;
+	}
+	data->stream_prepared[cpu_dai->id] = true;
+
+	return ret;
+}
+
+static int sc7280_snd_prepare(struct snd_pcm_substream *substream)
+{
+	struct snd_soc_pcm_runtime *rtd = substream->private_data;
+	const struct snd_soc_dai *cpu_dai = snd_soc_rtd_to_cpu(rtd, 0);
+
+	switch (cpu_dai->id) {
+	case LPASS_CDC_DMA_RX0:
+	case LPASS_CDC_DMA_TX3:
+	case RX_CODEC_DMA_RX_0:
+	case TX_CODEC_DMA_TX_3:
+	case VA_CODEC_DMA_TX_0:
+		return sc7280_snd_swr_prepare(substream);
+	default:
+		break;
+	}
+
+	return 0;
+}
+
+static int sc7280_snd_hw_free(struct snd_pcm_substream *substream)
+{
+	struct snd_soc_pcm_runtime *rtd = substream->private_data;
+	struct sc7280_snd_data *data = snd_soc_card_get_drvdata(rtd->card);
+	const struct snd_soc_dai *cpu_dai = snd_soc_rtd_to_cpu(rtd, 0);
+	struct sdw_stream_runtime *sruntime = data->sruntime[cpu_dai->id];
+
+	switch (cpu_dai->id) {
+	case LPASS_CDC_DMA_RX0:
+	case LPASS_CDC_DMA_TX3:
+	case RX_CODEC_DMA_RX_0:
+	case TX_CODEC_DMA_TX_3:
+	case VA_CODEC_DMA_TX_0:
+		if (sruntime && data->stream_prepared[cpu_dai->id]) {
+			sdw_disable_stream(sruntime);
+			sdw_deprepare_stream(sruntime);
+			data->stream_prepared[cpu_dai->id] = false;
+		}
+		break;
+	default:
+		break;
+	}
+	return 0;
+}
+
+static void sc7280_snd_shutdown(struct snd_pcm_substream *substream)
+{
+	struct snd_soc_pcm_runtime *rtd = substream->private_data;
+	struct snd_soc_card *card = rtd->card;
+	struct sc7280_snd_data *data = snd_soc_card_get_drvdata(card);
+	struct snd_soc_dai *cpu_dai = snd_soc_rtd_to_cpu(rtd, 0);
+
+	switch (cpu_dai->id) {
+	case MI2S_PRIMARY:
+		if (--data->pri_mi2s_clk_count == 0) {
+			snd_soc_dai_set_sysclk(cpu_dai,
+					       LPASS_MCLK0,
+					       0,
+					       SNDRV_PCM_STREAM_PLAYBACK);
+		}
+		break;
+	case SECONDARY_MI2S_RX:
+		snd_soc_dai_set_sysclk(cpu_dai, Q6AFE_LPASS_CLK_ID_SEC_MI2S_IBIT,
+					       0, SNDRV_PCM_STREAM_PLAYBACK);
+		break;
+	default:
+		break;
+	}
+}
+
+static int sc7280_snd_startup(struct snd_pcm_substream *substream)
+{
+	unsigned int fmt = SND_SOC_DAIFMT_CBS_CFS;
+	unsigned int codec_dai_fmt = SND_SOC_DAIFMT_CBS_CFS;
+	struct snd_soc_pcm_runtime *rtd = substream->private_data;
+	struct snd_soc_dai *cpu_dai = snd_soc_rtd_to_cpu(rtd, 0);
+	struct snd_soc_dai *codec_dai = snd_soc_rtd_to_codec(rtd, 0);
+	int ret = 0;
+
+	switch (cpu_dai->id) {
+	case MI2S_PRIMARY:
+		ret = sc7280_rt5682_init(rtd);
+		break;
+	case SECONDARY_MI2S_RX:
+		codec_dai_fmt |= SND_SOC_DAIFMT_NB_NF | SND_SOC_DAIFMT_I2S;
+
+		snd_soc_dai_set_sysclk(cpu_dai, Q6AFE_LPASS_CLK_ID_SEC_MI2S_IBIT,
+			MI2S_BCLK_RATE, SNDRV_PCM_STREAM_PLAYBACK);
+
+		snd_soc_dai_set_fmt(cpu_dai, fmt);
+		snd_soc_dai_set_fmt(codec_dai, codec_dai_fmt);
+		break;
+	default:
+		break;
+	}
+	return ret;
+}
+
+static const struct snd_soc_ops sc7280_ops = {
+	.startup = sc7280_snd_startup,
+	.hw_params = sc7280_snd_hw_params,
+	.hw_free = sc7280_snd_hw_free,
+	.prepare = sc7280_snd_prepare,
+	.shutdown = sc7280_snd_shutdown,
+};
+
+static const struct snd_soc_dapm_widget sc7280_snd_widgets[] = {
+	SND_SOC_DAPM_HP("Headphone Jack", NULL),
+	SND_SOC_DAPM_MIC("Headset Mic", NULL),
+};
+
+static const struct snd_kcontrol_new sc7280_snd_controls[] = {
+	SOC_DAPM_PIN_SWITCH("Headphone Jack"),
+	SOC_DAPM_PIN_SWITCH("Headset Mic"),
+};
+
+static int sc7280_snd_be_hw_params_fixup(struct snd_soc_pcm_runtime *rtd,
+					 struct snd_pcm_hw_params *params)
+{
+	struct snd_interval *rate = hw_param_interval(params, SNDRV_PCM_HW_PARAM_RATE);
+	struct snd_interval *channels = hw_param_interval(params, SNDRV_PCM_HW_PARAM_CHANNELS);
+	struct snd_mask *fmt = hw_param_mask(params, SNDRV_PCM_HW_PARAM_FORMAT);
+
+	rate->min = rate->max = 48000;
+	channels->min = channels->max = 2;
+	snd_mask_set_format(fmt, SNDRV_PCM_FORMAT_S16_LE);
+
+	return 0;
+}
+
+static int sc7280_snd_platform_probe(struct platform_device *pdev)
+{
+	struct snd_soc_card *card;
+	struct sc7280_snd_data *data;
+	struct device *dev = &pdev->dev;
+	struct snd_soc_dai_link *link;
+	int ret, i;
+
+	data = devm_kzalloc(dev, sizeof(*data), GFP_KERNEL);
+	if (!data)
+		return -ENOMEM;
+
+	card = &data->card;
+	snd_soc_card_set_drvdata(card, data);
+
+	card->owner = THIS_MODULE;
+	card->driver_name = "SC7280";
+	card->dev = dev;
+
+	card->dapm_widgets = sc7280_snd_widgets;
+	card->num_dapm_widgets = ARRAY_SIZE(sc7280_snd_widgets);
+	card->controls = sc7280_snd_controls;
+	card->num_controls = ARRAY_SIZE(sc7280_snd_controls);
+
+	ret = qcom_snd_parse_of(card);
+	if (ret)
+		return ret;
+
+	for_each_card_prelinks(card, i, link) {
+		link->init = sc7280_init;
+		link->ops = &sc7280_ops;
+		if (link->no_pcm == 1)
+			link->be_hw_params_fixup = sc7280_snd_be_hw_params_fixup;
+	}
+
+	return devm_snd_soc_register_card(dev, card);
+}
+
+static const struct of_device_id sc7280_snd_device_id[]  = {
+	{ .compatible = "google,sc7280-herobrine" },
+	{}
+};
+MODULE_DEVICE_TABLE(of, sc7280_snd_device_id);
+
+static struct platform_driver sc7280_snd_driver = {
+	.probe = sc7280_snd_platform_probe,
+	.driver = {
+		.name = "msm-snd-sc7280",
+		.of_match_table = sc7280_snd_device_id,
+		.pm = &snd_soc_pm_ops,
+	},
+};
+module_platform_driver(sc7280_snd_driver);
+
+MODULE_DESCRIPTION("sc7280 ASoC Machine Driver");
+MODULE_LICENSE("GPL");