1 files changed, 312 insertions, 0 deletions

diff --git a/sound/soc/intel/boards/cht_bsw_nau8824.c b/sound/soc/intel/boards/cht_bsw_nau8824.c
new file mode 100644
index 000000000..af2d9a784
--- /dev/null
+++ b/sound/soc/intel/boards/cht_bsw_nau8824.c
@@ -0,0 +1,312 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ *  cht-bsw-nau8824.c - ASoc Machine driver for Intel Cherryview-based
+ *          platforms Cherrytrail and Braswell, with nau8824 codec.
+ *
+ *  Copyright (C) 2018 Intel Corp
+ *  Copyright (C) 2018 Nuvoton Technology Corp
+ *
+ *  Author: Wang, Joseph C <joequant@gmail.com>
+ *  Co-author: John Hsu <KCHSU0@nuvoton.com>
+ *  This file is based on cht_bsw_rt5672.c and cht-bsw-max98090.c
+ */
+
+#include <linux/module.h>
+#include <linux/platform_device.h>
+#include <linux/slab.h>
+#include <sound/pcm.h>
+#include <sound/pcm_params.h>
+#include <sound/soc.h>
+#include <sound/soc-acpi.h>
+#include <sound/jack.h>
+#include <linux/input.h>
+#include "../atom/sst-atom-controls.h"
+#include "../../codecs/nau8824.h"
+
+struct cht_mc_private {
+	struct snd_soc_jack jack;
+};
+
+static struct snd_soc_jack_pin cht_bsw_jack_pins[] = {
+	{
+		.pin = "Headphone",
+		.mask = SND_JACK_HEADPHONE,
+	},
+	{
+		.pin = "Headset Mic",
+		.mask = SND_JACK_MICROPHONE,
+	},
+};
+
+static const struct snd_soc_dapm_widget cht_dapm_widgets[] = {
+	SND_SOC_DAPM_HP("Headphone", NULL),
+	SND_SOC_DAPM_MIC("Headset Mic", NULL),
+	SND_SOC_DAPM_MIC("Int Mic", NULL),
+	SND_SOC_DAPM_SPK("Ext Spk", NULL),
+};
+
+static const struct snd_soc_dapm_route cht_audio_map[] = {
+	{"Ext Spk", NULL, "SPKOUTL"},
+	{"Ext Spk", NULL, "SPKOUTR"},
+	{"Headphone", NULL, "HPOL"},
+	{"Headphone", NULL, "HPOR"},
+	{"MIC1", NULL, "Int Mic"},
+	{"MIC2", NULL, "Int Mic"},
+	{"HSMIC1", NULL, "Headset Mic"},
+	{"HSMIC2", NULL, "Headset Mic"},
+	{"Playback", NULL, "ssp2 Tx"},
+	{"ssp2 Tx", NULL, "codec_out0"},
+	{"ssp2 Tx", NULL, "codec_out1"},
+	{"codec_in0", NULL, "ssp2 Rx" },
+	{"codec_in1", NULL, "ssp2 Rx" },
+	{"ssp2 Rx", NULL, "Capture"},
+};
+
+static const struct snd_kcontrol_new cht_mc_controls[] = {
+	SOC_DAPM_PIN_SWITCH("Headphone"),
+	SOC_DAPM_PIN_SWITCH("Headset Mic"),
+	SOC_DAPM_PIN_SWITCH("Int Mic"),
+	SOC_DAPM_PIN_SWITCH("Ext Spk"),
+};
+
+static int cht_aif1_hw_params(struct snd_pcm_substream *substream,
+	struct snd_pcm_hw_params *params)
+{
+	struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream);
+	struct snd_soc_dai *codec_dai = asoc_rtd_to_codec(rtd, 0);
+	int ret;
+
+	ret = snd_soc_dai_set_sysclk(codec_dai, NAU8824_CLK_FLL_FS, 0,
+		SND_SOC_CLOCK_IN);
+	if (ret < 0) {
+		dev_err(codec_dai->dev, "can't set FS clock %d\n", ret);
+		return ret;
+	}
+	ret = snd_soc_dai_set_pll(codec_dai, 0, 0, params_rate(params),
+		params_rate(params) * 256);
+	if (ret < 0) {
+		dev_err(codec_dai->dev, "can't set FLL: %d\n", ret);
+		return ret;
+	}
+
+	return 0;
+}
+
+static int cht_codec_init(struct snd_soc_pcm_runtime *runtime)
+{
+	struct cht_mc_private *ctx = snd_soc_card_get_drvdata(runtime->card);
+	struct snd_soc_jack *jack = &ctx->jack;
+	struct snd_soc_dai *codec_dai = asoc_rtd_to_codec(runtime, 0);
+	struct snd_soc_component *component = codec_dai->component;
+	int ret, jack_type;
+
+	/* NAU88L24 supports 4 buttons headset detection
+	 * KEY_PLAYPAUSE
+	 * KEY_VOICECOMMAND
+	 * KEY_VOLUMEUP
+	 * KEY_VOLUMEDOWN
+	 */
+	jack_type = SND_JACK_HEADSET | SND_JACK_BTN_0 | SND_JACK_BTN_1 |
+		SND_JACK_BTN_2 | SND_JACK_BTN_3;
+	ret = snd_soc_card_jack_new_pins(runtime->card, "Headset", jack_type,
+		jack, cht_bsw_jack_pins, ARRAY_SIZE(cht_bsw_jack_pins));
+	if (ret) {
+		dev_err(runtime->dev,
+			"Headset Jack creation failed %d\n", 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);
+
+	nau8824_enable_jack_detect(component, jack);
+
+	return ret;
+}
+
+static int cht_codec_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);
+	int ret;
+
+	/* The DSP will convert the FE rate to 48k, stereo, 24bits */
+	rate->min = rate->max = 48000;
+	channels->min = channels->max = 2;
+
+	/* set SSP2 to 24-bit */
+	snd_mask_none(fmt);
+	params_set_format(params, SNDRV_PCM_FORMAT_S24_LE);
+
+	/* TDM 4 slots 24 bit, set Rx & Tx bitmask to 4 active slots */
+	ret = snd_soc_dai_set_tdm_slot(asoc_rtd_to_codec(rtd, 0), 0xf, 0x1, 4, 24);
+	if (ret < 0) {
+		dev_err(rtd->dev, "can't set codec TDM slot %d\n", ret);
+		return ret;
+	}
+
+	return 0;
+}
+
+static int cht_aif1_startup(struct snd_pcm_substream *substream)
+{
+	return snd_pcm_hw_constraint_single(substream->runtime,
+		SNDRV_PCM_HW_PARAM_RATE, 48000);
+}
+
+static const struct snd_soc_ops cht_aif1_ops = {
+	.startup = cht_aif1_startup,
+};
+
+static const struct snd_soc_ops cht_be_ssp2_ops = {
+	.hw_params = cht_aif1_hw_params,
+};
+
+SND_SOC_DAILINK_DEF(dummy,
+	DAILINK_COMP_ARRAY(COMP_DUMMY()));
+
+SND_SOC_DAILINK_DEF(media,
+	DAILINK_COMP_ARRAY(COMP_CPU("media-cpu-dai")));
+
+SND_SOC_DAILINK_DEF(deepbuffer,
+	DAILINK_COMP_ARRAY(COMP_CPU("deepbuffer-cpu-dai")));
+
+SND_SOC_DAILINK_DEF(ssp2_port,
+	DAILINK_COMP_ARRAY(COMP_CPU("ssp2-port")));
+SND_SOC_DAILINK_DEF(ssp2_codec,
+	DAILINK_COMP_ARRAY(COMP_CODEC("i2c-10508824:00",
+				      NAU8824_CODEC_DAI)));
+
+SND_SOC_DAILINK_DEF(platform,
+	DAILINK_COMP_ARRAY(COMP_PLATFORM("sst-mfld-platform")));
+
+static struct snd_soc_dai_link cht_dailink[] = {
+	/* Front End DAI links */
+	[MERR_DPCM_AUDIO] = {
+		.name = "Audio Port",
+		.stream_name = "Audio",
+		.nonatomic = true,
+		.dynamic = 1,
+		.dpcm_playback = 1,
+		.dpcm_capture = 1,
+		.ops = &cht_aif1_ops,
+		SND_SOC_DAILINK_REG(media, dummy, platform),
+	},
+	[MERR_DPCM_DEEP_BUFFER] = {
+		.name = "Deep-Buffer Audio Port",
+		.stream_name = "Deep-Buffer Audio",
+		.nonatomic = true,
+		.dynamic = 1,
+		.dpcm_playback = 1,
+		.ops = &cht_aif1_ops,
+		SND_SOC_DAILINK_REG(deepbuffer, dummy, platform),
+	},
+	/* Back End DAI links */
+	{
+		/* SSP2 - Codec */
+		.name = "SSP2-Codec",
+		.id = 0,
+		.no_pcm = 1,
+		.dai_fmt = SND_SOC_DAIFMT_DSP_B | SND_SOC_DAIFMT_IB_NF
+			| SND_SOC_DAIFMT_CBC_CFC,
+		.init = cht_codec_init,
+		.be_hw_params_fixup = cht_codec_fixup,
+		.dpcm_playback = 1,
+		.dpcm_capture = 1,
+		.ops = &cht_be_ssp2_ops,
+		SND_SOC_DAILINK_REG(ssp2_port, ssp2_codec, platform),
+	},
+};
+
+/* use space before codec name to simplify card ID, and simplify driver name */
+#define SOF_CARD_NAME "bytcht nau8824" /* card name will be 'sof-bytcht nau8824 */
+#define SOF_DRIVER_NAME "SOF"
+
+#define CARD_NAME "chtnau8824"
+#define DRIVER_NAME NULL /* card name will be used for driver name */
+
+/* SoC card */
+static struct snd_soc_card snd_soc_card_cht = {
+	.owner = THIS_MODULE,
+	.dai_link = cht_dailink,
+	.num_links = ARRAY_SIZE(cht_dailink),
+	.dapm_widgets = cht_dapm_widgets,
+	.num_dapm_widgets = ARRAY_SIZE(cht_dapm_widgets),
+	.dapm_routes = cht_audio_map,
+	.num_dapm_routes = ARRAY_SIZE(cht_audio_map),
+	.controls = cht_mc_controls,
+	.num_controls = ARRAY_SIZE(cht_mc_controls),
+};
+
+static int snd_cht_mc_probe(struct platform_device *pdev)
+{
+	struct cht_mc_private *drv;
+	struct snd_soc_acpi_mach *mach;
+	const char *platform_name;
+	bool sof_parent;
+	int ret_val;
+
+	drv = devm_kzalloc(&pdev->dev, sizeof(*drv), GFP_KERNEL);
+	if (!drv)
+		return -ENOMEM;
+	snd_soc_card_set_drvdata(&snd_soc_card_cht, drv);
+
+	/* override platform name, if required */
+	snd_soc_card_cht.dev = &pdev->dev;
+	mach = pdev->dev.platform_data;
+	platform_name = mach->mach_params.platform;
+
+	ret_val = snd_soc_fixup_dai_links_platform_name(&snd_soc_card_cht,
+							platform_name);
+	if (ret_val)
+		return ret_val;
+
+	sof_parent = snd_soc_acpi_sof_parent(&pdev->dev);
+
+	/* set card and driver name */
+	if (sof_parent) {
+		snd_soc_card_cht.name = SOF_CARD_NAME;
+		snd_soc_card_cht.driver_name = SOF_DRIVER_NAME;
+	} else {
+		snd_soc_card_cht.name = CARD_NAME;
+		snd_soc_card_cht.driver_name = DRIVER_NAME;
+	}
+
+	snd_soc_card_cht.components = nau8824_components();
+
+	/* set pm ops */
+	if (sof_parent)
+		pdev->dev.driver->pm = &snd_soc_pm_ops;
+
+	/* register the soc card */
+	ret_val = devm_snd_soc_register_card(&pdev->dev, &snd_soc_card_cht);
+	if (ret_val) {
+		dev_err(&pdev->dev,
+			"snd_soc_register_card failed %d\n", ret_val);
+		return ret_val;
+	}
+	platform_set_drvdata(pdev, &snd_soc_card_cht);
+
+	return ret_val;
+}
+
+static struct platform_driver snd_cht_mc_driver = {
+	.driver = {
+		.name = "cht-bsw-nau8824",
+	},
+	.probe = snd_cht_mc_probe,
+};
+
+module_platform_driver(snd_cht_mc_driver);
+
+MODULE_DESCRIPTION("ASoC Intel(R) Baytrail CR Machine driver");
+MODULE_AUTHOR("Wang, Joseph C <joequant@gmail.com>");
+MODULE_AUTHOR("John Hsu <KCHSU0@nuvoton.com>");
+MODULE_LICENSE("GPL v2");
+MODULE_ALIAS("platform:cht-bsw-nau8824");