Date:   Tue, 12 Oct 2021 00:17:02 +0530
From:   Vijendar Mukunda <Vijendar.Mukunda@....com>
To:     <broonie@...nel.org>, <alsa-devel@...a-project.org>
CC:     <Alexander.Deucher@....com>, <Sunil-kumar.Dommati@....com>,
        <David.Rhodes@...rus.com>, <wtli@...oton.com>,
        Vijendar Mukunda <Vijendar.Mukunda@....com>,
        Liam Girdwood <lgirdwood@...il.com>,
        "Jaroslav Kysela" <perex@...ex.cz>, Takashi Iwai <tiwai@...e.com>,
        open list <linux-kernel@...r.kernel.org>
Subject: [PATCH 2/3] ASoC: amd: add vangogh machine driver

Add Vangogh machine driver using NAU8821 & CS35L41 Codecs.

Signed-off-by: Vijendar Mukunda <Vijendar.Mukunda@....com>
---
 sound/soc/amd/vangogh/acp5x-nu8821-cs35l41.c | 357 +++++++++++++++++++
 1 file changed, 357 insertions(+)
 create mode 100644 sound/soc/amd/vangogh/acp5x-nu8821-cs35l41.c

diff --git a/sound/soc/amd/vangogh/acp5x-nu8821-cs35l41.c b/sound/soc/amd/vangogh/acp5x-nu8821-cs35l41.c
new file mode 100644
index 000000000000..a443950ffa1e
--- /dev/null
+++ b/sound/soc/amd/vangogh/acp5x-nu8821-cs35l41.c
@@ -0,0 +1,357 @@
+// SPDX-License-Identifier: GPL-2.0+
+//
+// Machine driver for AMD Vangogh platform using NAU8821 & CS35L41
+//
+//Copyright 2021 Advanced Micro Devices, Inc.
+
+#include <sound/soc.h>
+#include <sound/soc-dapm.h>
+#include <linux/module.h>
+#include <linux/io.h>
+#include <sound/pcm.h>
+#include <sound/pcm_params.h>
+
+#include <sound/jack.h>
+#include <linux/clk.h>
+#include <linux/gpio.h>
+#include <linux/gpio/consumer.h>
+#include <linux/module.h>
+#include <linux/i2c.h>
+#include <linux/input.h>
+#include <linux/io.h>
+#include <linux/acpi.h>
+
+#include "../../codecs/nau8821.h"
+#include "../../codecs/cs35l41.h"
+
+#include "acp5x.h"
+
+#define DRV_NAME "acp5x_nu8821_cs35l41_mach"
+#define DUAL_CHANNEL		2
+#define ACP5X_NUVOTON_CODEC_DAI	"nau8821-hifi"
+
+static struct snd_soc_jack vg_headset;
+
+static struct snd_soc_jack_pin acp5x_nau8821_jack_pins[] = {
+	{
+		.pin	= "Headphone",
+		.mask	= SND_JACK_HEADPHONE,
+	},
+	{
+		.pin	= "Headset Mic",
+		.mask	= SND_JACK_MICROPHONE,
+	},
+};
+
+static int acp5x_8821_init(struct snd_soc_pcm_runtime *rtd)
+{
+	int ret;
+	struct snd_soc_card *card = rtd->card;
+	struct snd_soc_component *component =
+					asoc_rtd_to_codec(rtd, 0)->component;
+
+	/*
+	 * Headset buttons map to the google Reference headset.
+	 * These can be configured by userspace.
+	 */
+	ret = snd_soc_card_jack_new(card, "Headset Jack",
+				    SND_JACK_HEADSET | SND_JACK_BTN_0,
+				    &vg_headset, acp5x_nau8821_jack_pins,
+				    ARRAY_SIZE(acp5x_nau8821_jack_pins));
+	if (ret) {
+		dev_err(rtd->dev, "Headset Jack creation failed %d\n", ret);
+		return ret;
+	}
+
+	snd_jack_set_key(vg_headset.jack, SND_JACK_BTN_0, KEY_MEDIA);
+	nau8821_enable_jack_detect(component, &vg_headset);
+	return ret;
+}
+
+static int acp5x_cs35l41_init(struct snd_soc_pcm_runtime *rtd)
+{
+	return 0;
+}
+
+static const unsigned int rates[] = {
+	48000,
+};
+
+static const struct snd_pcm_hw_constraint_list constraints_rates = {
+	.count = ARRAY_SIZE(rates),
+	.list  = rates,
+	.mask = 0,
+};
+
+static const unsigned int channels[] = {
+	2,
+};
+
+static const struct snd_pcm_hw_constraint_list constraints_channels = {
+	.count = ARRAY_SIZE(channels),
+	.list = channels,
+	.mask = 0,
+};
+
+static int acp5x_8821_startup(struct snd_pcm_substream *substream)
+{
+	struct snd_pcm_runtime *runtime = substream->runtime;
+	struct snd_soc_pcm_runtime *rtd = substream->private_data;
+	struct snd_soc_card *card = rtd->card;
+	struct acp5x_platform_info *machine = snd_soc_card_get_drvdata(card);
+
+	machine->play_i2s_instance = I2S_SP_INSTANCE;
+	machine->cap_i2s_instance = I2S_SP_INSTANCE;
+
+	runtime->hw.channels_max = DUAL_CHANNEL;
+	snd_pcm_hw_constraint_list(runtime, 0, SNDRV_PCM_HW_PARAM_CHANNELS,
+				   &constraints_channels);
+	snd_pcm_hw_constraint_list(runtime, 0, SNDRV_PCM_HW_PARAM_RATE,
+				   &constraints_rates);
+	return 0;
+}
+
+static int acp5x_nau8821_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_card *card = rtd->card;
+	struct snd_soc_dai *codec_dai =
+			snd_soc_card_get_codec_dai(card,
+						   ACP5X_NUVOTON_CODEC_DAI);
+	int ret;
+
+	ret = snd_soc_dai_set_sysclk(codec_dai, NAU8821_CLK_FLL_BLK, 0,
+				     SND_SOC_CLOCK_IN);
+	if (ret < 0)
+		dev_err(card->dev, "can't set FS clock %d\n", ret);
+	ret = snd_soc_dai_set_pll(codec_dai, 0, 0, snd_soc_params_to_bclk(params),
+				  params_rate(params) * 256);
+	if (ret < 0)
+		dev_err(card->dev, "can't set FLL: %d\n", ret);
+
+	return ret;
+}
+
+static int acp5x_cs35l41_startup(struct snd_pcm_substream *substream)
+{
+	struct snd_pcm_runtime *runtime = substream->runtime;
+	struct snd_soc_pcm_runtime *rtd = substream->private_data;
+	struct snd_soc_card *card = rtd->card;
+	struct acp5x_platform_info *machine = snd_soc_card_get_drvdata(card);
+
+	machine->play_i2s_instance = I2S_HS_INSTANCE;
+
+	runtime->hw.channels_max = DUAL_CHANNEL;
+	snd_pcm_hw_constraint_list(runtime, 0, SNDRV_PCM_HW_PARAM_CHANNELS,
+				   &constraints_channels);
+	snd_pcm_hw_constraint_list(runtime, 0, SNDRV_PCM_HW_PARAM_RATE,
+				   &constraints_rates);
+	return 0;
+}
+
+static int acp5x_cs35l41_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_card *card = rtd->card;
+	struct snd_soc_dai *codec_dai;
+	int ret, i;
+	unsigned int num_codecs = rtd->num_codecs;
+	unsigned int bclk_val;
+
+	for (i = 0; i < num_codecs; i++) {
+		codec_dai = asoc_rtd_to_codec(rtd, i);
+		if ((strcmp(codec_dai->name, "spi-VLV1776:00") == 0) ||
+		    (strcmp(codec_dai->name, "spi-VLV1776:01") == 0)) {
+			switch (params_rate(params)) {
+			case 48000:
+				bclk_val = 1536000;
+				break;
+			default:
+				dev_err(card->dev, "Invalid Samplerate:0x%x\n",
+					params_rate(params));
+				return -EINVAL;
+			}
+			ret = snd_soc_component_set_sysclk(codec_dai->component,
+							   0, 0, bclk_val, SND_SOC_CLOCK_IN);
+			if (ret < 0) {
+				dev_err(card->dev, "failed to set sysclk for CS35l41 dai\n");
+				return ret;
+			}
+		}
+	}
+
+	return ret;
+}
+
+static const struct snd_soc_ops acp5x_8821_ops = {
+	.startup = acp5x_8821_startup,
+	.hw_params = acp5x_nau8821_hw_params,
+};
+
+static const struct snd_soc_ops acp5x_cs35l41_play_ops = {
+	.startup = acp5x_cs35l41_startup,
+	.hw_params = acp5x_cs35l41_hw_params,
+};
+
+static struct snd_soc_codec_conf cs35l41_conf[] = {
+	{
+		.dlc = COMP_CODEC_CONF("spi-VLV1776:00"),
+		.name_prefix = "Left",
+	},
+	{
+		.dlc = COMP_CODEC_CONF("spi-VLV1776:01"),
+		.name_prefix = "Right",
+	},
+};
+
+SND_SOC_DAILINK_DEF(acp5x_i2s,
+		    DAILINK_COMP_ARRAY(COMP_CPU("acp5x_i2s_playcap.0")));
+
+SND_SOC_DAILINK_DEF(acp5x_bt,
+		    DAILINK_COMP_ARRAY(COMP_CPU("acp5x_i2s_playcap.1")));
+
+SND_SOC_DAILINK_DEF(nau8821,
+		    DAILINK_COMP_ARRAY(COMP_CODEC("i2c-NVTN2020:00",
+						  "nau8821-hifi")));
+
+SND_SOC_DAILINK_DEF(cs35l41,
+		    DAILINK_COMP_ARRAY(COMP_CODEC("spi-VLV1776:00", "cs35l41-pcm"),
+				       COMP_CODEC("spi-VLV1776:01", "cs35l41-pcm")));
+
+SND_SOC_DAILINK_DEF(platform,
+		    DAILINK_COMP_ARRAY(COMP_PLATFORM("acp5x_i2s_dma.0")));
+
+static struct snd_soc_dai_link acp5x_dai[] = {
+	{
+		.name = "acp5x-8825-play",
+		.stream_name = "Playback/Capture",
+		.dai_fmt = SND_SOC_DAIFMT_I2S  | SND_SOC_DAIFMT_NB_NF |
+			   SND_SOC_DAIFMT_CBC_CFC,
+		.dpcm_playback = 1,
+		.dpcm_capture = 1,
+		.ops = &acp5x_8821_ops,
+		.init = acp5x_8821_init,
+		SND_SOC_DAILINK_REG(acp5x_i2s, nau8821, platform),
+	},
+	{
+		.name = "acp5x-CS35L41-Stereo",
+		.stream_name = "CS35L41 Stereo Playback",
+		.dai_fmt = SND_SOC_DAIFMT_I2S  | SND_SOC_DAIFMT_NB_NF |
+			   SND_SOC_DAIFMT_CBC_CFC,
+		.dpcm_playback = 1,
+		.playback_only = 1,
+		.ops = &acp5x_cs35l41_play_ops,
+		.init = acp5x_cs35l41_init,
+		SND_SOC_DAILINK_REG(acp5x_bt, cs35l41, platform),
+	},
+};
+
+static int platform_clock_control(struct snd_soc_dapm_widget *w,
+				  struct snd_kcontrol *k, int  event)
+{
+	struct snd_soc_dapm_context *dapm = w->dapm;
+	struct snd_soc_card *card = dapm->card;
+	struct snd_soc_dai *codec_dai;
+	int ret = 0;
+
+	codec_dai = snd_soc_card_get_codec_dai(card, ACP5X_NUVOTON_CODEC_DAI);
+	if (!codec_dai) {
+		dev_err(card->dev, "Codec dai not found\n");
+		return -EIO;
+	}
+
+	if (SND_SOC_DAPM_EVENT_OFF(event)) {
+		ret = snd_soc_dai_set_sysclk(codec_dai, NAU8821_CLK_INTERNAL,
+					     0, SND_SOC_CLOCK_IN);
+		if (ret < 0) {
+			dev_err(card->dev, "set sysclk err = %d\n", ret);
+			return -EIO;
+		}
+	}
+	return ret;
+}
+
+static const struct snd_kcontrol_new acp5x_8821_controls[] = {
+	SOC_DAPM_PIN_SWITCH("Headphone"),
+	SOC_DAPM_PIN_SWITCH("Headset Mic"),
+	SOC_DAPM_PIN_SWITCH("Int Mic"),
+};
+
+static const struct snd_soc_dapm_widget acp5x_8821_widgets[] = {
+	SND_SOC_DAPM_HP("Headphone", NULL),
+	SND_SOC_DAPM_MIC("Headset Mic", NULL),
+	SND_SOC_DAPM_MIC("Int Mic", NULL),
+	SND_SOC_DAPM_SUPPLY("Platform Clock", SND_SOC_NOPM, 0, 0,
+			    platform_clock_control, SND_SOC_DAPM_POST_PMD),
+};
+
+static const struct snd_soc_dapm_route acp5x_8821_audio_route[] = {
+	/* HP jack connectors - unknown if we have jack detection */
+	{ "Headphone", NULL, "HPOL" },
+	{ "Headphone", NULL, "HPOR" },
+	{ "MICL", NULL, "Headset Mic" },
+	{ "MICR", NULL, "Headset Mic" },
+	{ "DMIC", NULL, "Int Mic" },
+
+	{ "Headphone", NULL, "Platform Clock" },
+	{ "Headset Mic", NULL, "Platform Clock" },
+	{ "Int Mic", NULL, "Platform Clock" },
+};
+
+static struct snd_soc_card acp5x_card = {
+	.name = "acp5x",
+	.owner = THIS_MODULE,
+	.dai_link = acp5x_dai,
+	.num_links = ARRAY_SIZE(acp5x_dai),
+	.dapm_widgets = acp5x_8821_widgets,
+	.num_dapm_widgets = ARRAY_SIZE(acp5x_8821_widgets),
+	.dapm_routes = acp5x_8821_audio_route,
+	.num_dapm_routes = ARRAY_SIZE(acp5x_8821_audio_route),
+	.codec_conf = cs35l41_conf,
+	.num_configs = ARRAY_SIZE(cs35l41_conf),
+	.controls = acp5x_8821_controls,
+	.num_controls = ARRAY_SIZE(acp5x_8821_controls),
+};
+
+static int acp5x_probe(struct platform_device *pdev)
+{
+	int ret;
+	struct acp5x_platform_info *machine;
+	struct snd_soc_card *card;
+
+	machine = devm_kzalloc(&pdev->dev, sizeof(struct acp5x_platform_info),
+			       GFP_KERNEL);
+	if (!machine)
+		return -ENOMEM;
+
+	card = &acp5x_card;
+	acp5x_card.dev = &pdev->dev;
+
+	platform_set_drvdata(pdev, card);
+	snd_soc_card_set_drvdata(card, machine);
+
+	ret = devm_snd_soc_register_card(&pdev->dev, card);
+	if (ret) {
+		return dev_err_probe(&pdev->dev, ret,
+				     "snd_soc_register_card(%s) failed\n",
+				     acp5x_card.name);
+	}
+	return 0;
+}
+
+static struct platform_driver acp5x_mach_driver = {
+	.driver = {
+		.name = "acp5x_nu8821_cs35l41_mach",
+		.pm = &snd_soc_pm_ops,
+	},
+	.probe = acp5x_probe,
+};
+
+module_platform_driver(acp5x_mach_driver);
+
+MODULE_AUTHOR("Vijendar.Mukunda@....com");
+MODULE_DESCRIPTION("NAU8821 & CS35L41 audio support");
+MODULE_LICENSE("GPL v2");
+MODULE_ALIAS("platform:" DRV_NAME);
-- 
2.25.1

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