1 files changed, 315 insertions, 0 deletions

diff --git a/sound/soc/intel/avs/boards/nau8825.c b/sound/soc/intel/avs/boards/nau8825.c
new file mode 100644
index 000000000000..d44edacbfc9a
--- /dev/null
+++ b/sound/soc/intel/avs/boards/nau8825.c
@@ -0,0 +1,315 @@
+// SPDX-License-Identifier: GPL-2.0-only
+//
+// Copyright(c) 2021-2022 Intel Corporation
+//
+// Authors: Cezary Rojewski <cezary.rojewski@intel.com>
+//          Amadeusz Slawinski <amadeuszx.slawinski@linux.intel.com>
+//
+
+#include <linux/input.h>
+#include <linux/module.h>
+#include <linux/platform_device.h>
+#include <sound/core.h>
+#include <sound/jack.h>
+#include <sound/pcm.h>
+#include <sound/pcm_params.h>
+#include <sound/soc.h>
+#include <sound/soc-acpi.h>
+#include "../../../codecs/nau8825.h"
+#include "../utils.h"
+
+#define SKL_NUVOTON_CODEC_DAI	"nau8825-hifi"
+
+static int
+avs_nau8825_clock_control(struct snd_soc_dapm_widget *w, struct snd_kcontrol *control, int event)
+{
+	struct snd_soc_card *card = snd_soc_dapm_to_card(w->dapm);
+	struct snd_soc_dai *codec_dai;
+	int ret;
+
+	codec_dai = snd_soc_card_get_codec_dai(card, SKL_NUVOTON_CODEC_DAI);
+	if (!codec_dai) {
+		dev_err(card->dev, "Codec dai not found\n");
+		return -EINVAL;
+	}
+
+	if (SND_SOC_DAPM_EVENT_ON(event))
+		ret = snd_soc_dai_set_sysclk(codec_dai, NAU8825_CLK_MCLK, 24000000,
+					     SND_SOC_CLOCK_IN);
+	else
+		ret = snd_soc_dai_set_sysclk(codec_dai, NAU8825_CLK_INTERNAL, 0, SND_SOC_CLOCK_IN);
+	if (ret < 0)
+		dev_err(card->dev, "Set sysclk failed: %d\n", ret);
+
+	return ret;
+}
+
+static const struct snd_kcontrol_new card_controls[] = {
+	SOC_DAPM_PIN_SWITCH("Headphone Jack"),
+	SOC_DAPM_PIN_SWITCH("Headset Mic"),
+};
+
+static const struct snd_soc_dapm_widget card_widgets[] = {
+	SND_SOC_DAPM_HP("Headphone Jack", NULL),
+	SND_SOC_DAPM_MIC("Headset Mic", NULL),
+	SND_SOC_DAPM_SUPPLY("Platform Clock", SND_SOC_NOPM, 0, 0, avs_nau8825_clock_control,
+			    SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMD),
+};
+
+static const struct snd_soc_dapm_route card_base_routes[] = {
+	{ "Headphone Jack", NULL, "HPOL" },
+	{ "Headphone Jack", NULL, "HPOR" },
+
+	{ "MIC", NULL, "Headset Mic" },
+
+	{ "Headphone Jack", NULL, "Platform Clock" },
+	{ "Headset Mic", NULL, "Platform Clock" },
+};
+
+static const struct snd_soc_jack_pin card_headset_pins[] = {
+	{
+		.pin = "Headphone Jack",
+		.mask = SND_JACK_HEADPHONE,
+	},
+	{
+		.pin = "Headset Mic",
+		.mask = SND_JACK_MICROPHONE,
+	},
+};
+
+static int avs_nau8825_codec_init(struct snd_soc_pcm_runtime *runtime)
+{
+	struct snd_soc_card *card = runtime->card;
+	struct snd_soc_jack_pin *pins;
+	struct snd_soc_jack *jack;
+	int num_pins, ret;
+
+	jack = snd_soc_card_get_drvdata(card);
+	num_pins = ARRAY_SIZE(card_headset_pins);
+
+	pins = devm_kmemdup_array(card->dev, card_headset_pins, num_pins,
+				  sizeof(card_headset_pins[0]), GFP_KERNEL);
+	if (!pins)
+		return -ENOMEM;
+
+	/*
+	 * 4 buttons here map to the google Reference headset.
+	 * The use of these buttons can be decided by the user space.
+	 */
+	ret = snd_soc_card_jack_new_pins(card, "Headset Jack", SND_JACK_HEADSET | SND_JACK_BTN_0 |
+					 SND_JACK_BTN_1 | SND_JACK_BTN_2 | SND_JACK_BTN_3,
+					 jack, pins, num_pins);
+	if (ret)
+		return ret;
+
+	snd_jack_set_key(jack->jack, SND_JACK_BTN_0, KEY_PLAYPAUSE);
+	snd_jack_set_key(jack->jack, SND_JACK_BTN_1, KEY_VOICECOMMAND);
+	snd_jack_set_key(jack->jack, SND_JACK_BTN_2, KEY_VOLUMEUP);
+	snd_jack_set_key(jack->jack, SND_JACK_BTN_3, KEY_VOLUMEDOWN);
+
+	return snd_soc_component_set_jack(snd_soc_rtd_to_codec(runtime, 0)->component, jack, NULL);
+}
+
+static void avs_nau8825_codec_exit(struct snd_soc_pcm_runtime *rtd)
+{
+	snd_soc_component_set_jack(snd_soc_rtd_to_codec(rtd, 0)->component, NULL, NULL);
+}
+
+static int
+avs_nau8825_be_fixup(struct snd_soc_pcm_runtime *runtime, struct snd_pcm_hw_params *params)
+{
+	struct snd_interval *rate, *channels;
+	struct snd_mask *fmt;
+
+	rate = hw_param_interval(params, SNDRV_PCM_HW_PARAM_RATE);
+	channels = hw_param_interval(params, SNDRV_PCM_HW_PARAM_CHANNELS);
+	fmt = hw_param_mask(params, SNDRV_PCM_HW_PARAM_FORMAT);
+
+	/* The ADSP will convert the FE rate to 48k, stereo */
+	rate->min = rate->max = 48000;
+	channels->min = channels->max = 2;
+
+	/* set SSP to 24 bit */
+	snd_mask_none(fmt);
+	snd_mask_set_format(fmt, SNDRV_PCM_FORMAT_S24_LE);
+
+	return 0;
+}
+
+static int avs_nau8825_trigger(struct snd_pcm_substream *substream, int cmd)
+{
+	struct snd_pcm_runtime *runtime = substream->runtime;
+	struct snd_soc_pcm_runtime *rtm = snd_soc_substream_to_rtd(substream);
+	struct snd_soc_dai *codec_dai = snd_soc_rtd_to_codec(rtm, 0);
+	int ret = 0;
+
+	switch (cmd) {
+	case SNDRV_PCM_TRIGGER_START:
+		ret = snd_soc_dai_set_sysclk(codec_dai, NAU8825_CLK_FLL_FS, 0, SND_SOC_CLOCK_IN);
+		if (ret < 0) {
+			dev_err(codec_dai->dev, "can't set FS clock %d\n", ret);
+			break;
+		}
+
+		ret = snd_soc_dai_set_pll(codec_dai, 0, 0, runtime->rate, runtime->rate * 256);
+		if (ret < 0)
+			dev_err(codec_dai->dev, "can't set FLL: %d\n", ret);
+		break;
+
+	case SNDRV_PCM_TRIGGER_RESUME:
+		ret = snd_soc_dai_set_pll(codec_dai, 0, 0, runtime->rate, runtime->rate * 256);
+		if (ret < 0)
+			dev_err(codec_dai->dev, "can't set FLL: %d\n", ret);
+		break;
+	}
+
+	return ret;
+}
+
+
+static const struct snd_soc_ops avs_nau8825_ops = {
+	.trigger = avs_nau8825_trigger,
+};
+
+static int avs_create_dai_link(struct device *dev, int ssp_port, int tdm_slot,
+			       struct snd_soc_dai_link **dai_link)
+{
+	struct snd_soc_dai_link_component *platform;
+	struct snd_soc_dai_link *dl;
+
+	dl = devm_kzalloc(dev, sizeof(*dl), GFP_KERNEL);
+	platform = devm_kzalloc(dev, sizeof(*platform), GFP_KERNEL);
+	if (!dl || !platform)
+		return -ENOMEM;
+
+	dl->name = devm_kasprintf(dev, GFP_KERNEL,
+				  AVS_STRING_FMT("SSP", "-Codec", ssp_port, tdm_slot));
+	dl->cpus = devm_kzalloc(dev, sizeof(*dl->cpus), GFP_KERNEL);
+	dl->codecs = devm_kzalloc(dev, sizeof(*dl->codecs), GFP_KERNEL);
+	if (!dl->name || !dl->cpus || !dl->codecs)
+		return -ENOMEM;
+
+	dl->cpus->dai_name = devm_kasprintf(dev, GFP_KERNEL,
+					    AVS_STRING_FMT("SSP", " Pin", ssp_port, tdm_slot));
+	dl->codecs->name = devm_kasprintf(dev, GFP_KERNEL, "i2c-10508825:00");
+	dl->codecs->dai_name = devm_kasprintf(dev, GFP_KERNEL, SKL_NUVOTON_CODEC_DAI);
+	if (!dl->cpus->dai_name || !dl->codecs->name || !dl->codecs->dai_name)
+		return -ENOMEM;
+
+	platform->name = dev_name(dev);
+	dl->num_cpus = 1;
+	dl->num_codecs = 1;
+	dl->platforms = platform;
+	dl->num_platforms = 1;
+	dl->id = 0;
+	dl->dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF | SND_SOC_DAIFMT_CBC_CFC;
+	dl->init = avs_nau8825_codec_init;
+	dl->exit = avs_nau8825_codec_exit;
+	dl->be_hw_params_fixup = avs_nau8825_be_fixup;
+	dl->ops = &avs_nau8825_ops;
+	dl->nonatomic = 1;
+	dl->no_pcm = 1;
+
+	*dai_link = dl;
+
+	return 0;
+}
+
+static int avs_card_suspend_pre(struct snd_soc_card *card)
+{
+	struct snd_soc_dai *codec_dai = snd_soc_card_get_codec_dai(card, SKL_NUVOTON_CODEC_DAI);
+
+	return snd_soc_component_set_jack(codec_dai->component, NULL, NULL);
+}
+
+static int avs_card_resume_post(struct snd_soc_card *card)
+{
+	struct snd_soc_dai *codec_dai = snd_soc_card_get_codec_dai(card, SKL_NUVOTON_CODEC_DAI);
+	struct snd_soc_jack *jack = snd_soc_card_get_drvdata(card);
+	int stream = SNDRV_PCM_STREAM_PLAYBACK;
+
+	if (!codec_dai) {
+		dev_err(card->dev, "Codec dai not found\n");
+		return -EINVAL;
+	}
+
+	if (snd_soc_dai_stream_active(codec_dai, stream) &&
+	    snd_soc_dai_get_widget(codec_dai, stream)->active)
+		snd_soc_dai_set_sysclk(codec_dai, NAU8825_CLK_FLL_FS, 0, SND_SOC_CLOCK_IN);
+
+	return snd_soc_component_set_jack(codec_dai->component, jack, NULL);
+}
+
+static int avs_nau8825_probe(struct platform_device *pdev)
+{
+	struct snd_soc_dai_link *dai_link;
+	struct snd_soc_acpi_mach *mach;
+	struct avs_mach_pdata *pdata;
+	struct snd_soc_card *card;
+	struct snd_soc_jack *jack;
+	struct device *dev = &pdev->dev;
+	int ssp_port, tdm_slot, ret;
+
+	mach = dev_get_platdata(dev);
+	pdata = mach->pdata;
+
+	ret = avs_mach_get_ssp_tdm(dev, mach, &ssp_port, &tdm_slot);
+	if (ret)
+		return ret;
+
+	ret = avs_create_dai_link(dev, ssp_port, tdm_slot, &dai_link);
+	if (ret) {
+		dev_err(dev, "Failed to create dai link: %d", ret);
+		return ret;
+	}
+
+	jack = devm_kzalloc(dev, sizeof(*jack), GFP_KERNEL);
+	card = devm_kzalloc(dev, sizeof(*card), GFP_KERNEL);
+	if (!jack || !card)
+		return -ENOMEM;
+
+	if (pdata->obsolete_card_names) {
+		card->name = "avs_nau8825";
+	} else {
+		card->driver_name = "avs_nau8825";
+		card->long_name = card->name = "AVS I2S NAU8825";
+	}
+	card->dev = dev;
+	card->owner = THIS_MODULE;
+	card->suspend_pre = avs_card_suspend_pre;
+	card->resume_post = avs_card_resume_post;
+	card->dai_link = dai_link;
+	card->num_links = 1;
+	card->controls = card_controls;
+	card->num_controls = ARRAY_SIZE(card_controls);
+	card->dapm_widgets = card_widgets;
+	card->num_dapm_widgets = ARRAY_SIZE(card_widgets);
+	card->dapm_routes = card_base_routes;
+	card->num_dapm_routes = ARRAY_SIZE(card_base_routes);
+	card->fully_routed = true;
+	snd_soc_card_set_drvdata(card, jack);
+
+	return devm_snd_soc_register_deferrable_card(dev, card);
+}
+
+static const struct platform_device_id avs_nau8825_driver_ids[] = {
+	{
+		.name = "avs_nau8825",
+	},
+	{},
+};
+MODULE_DEVICE_TABLE(platform, avs_nau8825_driver_ids);
+
+static struct platform_driver avs_nau8825_driver = {
+	.probe = avs_nau8825_probe,
+	.driver = {
+		.name = "avs_nau8825",
+		.pm = &snd_soc_pm_ops,
+	},
+	.id_table = avs_nau8825_driver_ids,
+};
+
+module_platform_driver(avs_nau8825_driver)
+
+MODULE_DESCRIPTION("Intel nau8825 machine driver");
+MODULE_LICENSE("GPL");