[PATCH] ASoC: Intel: add nau8824 sound card

[John Hsu <KCHSU0@nuvoton.com>]

Create sound card with NAU88L24 codec in Intel Cherryview-based platforms,
Cherrytrail and Braswell.

Signed-off-by: John Hsu <KCHSU0@nuvoton.com>
---
 sound/soc/intel/boards/Kconfig                    |  11 +
 sound/soc/intel/boards/Makefile                   |   2 +
 sound/soc/intel/boards/cht_bsw_nau8824.c          | 282 ++++++++++++++++++++++
 sound/soc/intel/common/soc-acpi-intel-cht-match.c |   9 +
 4 files changed, 304 insertions(+)
 create mode 100644 sound/soc/intel/boards/cht_bsw_nau8824.c

diff --git a/sound/soc/intel/boards/Kconfig b/sound/soc/intel/boards/Kconfig
index fefb1ee..b4f12e6 100644
--- a/sound/soc/intel/boards/Kconfig
+++ b/sound/soc/intel/boards/Kconfig
@@ -125,6 +125,17 @@ config SND_SOC_INTEL_CHT_BSW_MAX98090_TI_MACH
 	  Say Y or m if you have such a device. This is a recommended option.
 	  If unsure select "N".
 
+config SND_SOC_INTEL_CHT_BSW_NAU8824_MACH
+	tristate "Cherrytrail & Braswell with NAU88L24 codec"
+	depends on X86_INTEL_LPSS && I2C && ACPI
+	select SND_SOC_ACPI
+	select SND_SOC_NAU8824
+	help
+	  This adds support for ASoC machine driver for Intel(R) Cherrytrail & Braswell
+	  platforms with NAU88L24 audio codec.
+	  Say Y or m if you have such a device. This is a recommended option.
+	  If unsure select "N".
+
 config SND_SOC_INTEL_BYT_CHT_DA7213_MACH
 	tristate "Baytrail & Cherrytrail with DA7212/7213 codec"
 	depends on X86_INTEL_LPSS && I2C && ACPI
diff --git a/sound/soc/intel/boards/Makefile b/sound/soc/intel/boards/Makefile
index 69d2dfa..f2a9ee4 100644
--- a/sound/soc/intel/boards/Makefile
+++ b/sound/soc/intel/boards/Makefile
@@ -11,6 +11,7 @@ snd-soc-sst-bytcr-rt5651-objs := bytcr_rt5651.o
 snd-soc-sst-cht-bsw-rt5672-objs := cht_bsw_rt5672.o
 snd-soc-sst-cht-bsw-rt5645-objs := cht_bsw_rt5645.o
 snd-soc-sst-cht-bsw-max98090_ti-objs := cht_bsw_max98090_ti.o
+snd-soc-sst-cht-bsw-nau8824-objs := cht_bsw_nau8824.o
 snd-soc-sst-byt-cht-da7213-objs := bytcht_da7213.o
 snd-soc-sst-byt-cht-es8316-objs := bytcht_es8316.o
 snd-soc-sst-byt-cht-nocodec-objs := bytcht_nocodec.o
@@ -32,6 +33,7 @@ obj-$(CONFIG_SND_SOC_INTEL_BYTCR_RT5651_MACH) += snd-soc-sst-bytcr-rt5651.o
 obj-$(CONFIG_SND_SOC_INTEL_CHT_BSW_RT5672_MACH) += snd-soc-sst-cht-bsw-rt5672.o
 obj-$(CONFIG_SND_SOC_INTEL_CHT_BSW_RT5645_MACH) += snd-soc-sst-cht-bsw-rt5645.o
 obj-$(CONFIG_SND_SOC_INTEL_CHT_BSW_MAX98090_TI_MACH) += snd-soc-sst-cht-bsw-max98090_ti.o
+obj-$(CONFIG_SND_SOC_INTEL_CHT_BSW_NAU8824_MACH) += snd-soc-sst-cht-bsw-nau8824.o
 obj-$(CONFIG_SND_SOC_INTEL_BYT_CHT_DA7213_MACH) += snd-soc-sst-byt-cht-da7213.o
 obj-$(CONFIG_SND_SOC_INTEL_BYT_CHT_ES8316_MACH) += snd-soc-sst-byt-cht-es8316.o
 obj-$(CONFIG_SND_SOC_INTEL_BYT_CHT_NOCODEC_MACH) += snd-soc-sst-byt-cht-nocodec.o
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 0000000..08d0b81
--- /dev/null
+++ b/sound/soc/intel/boards/cht_bsw_nau8824.c
@@ -0,0 +1,282 @@
+/*
+ *  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
+ *
+ *  This program is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation; version 2 of the License.
+ *
+ *  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 <linux/platform_device.h>
+#include <linux/slab.h>
+#include <sound/pcm.h>
+#include <sound/pcm_params.h>
+#include <sound/soc.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 = substream->private_data;
+	struct snd_soc_dai *codec_dai = rtd->codec_dai;
+	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_codec *codec = runtime->codec;
+	struct snd_soc_dai *codec_dai = runtime->codec_dai;
+	int ret, jack_type;
+
+	/* TDM 4 slots 24 bit, set Rx & Tx bitmask to 4 active slots */
+	ret = snd_soc_dai_set_tdm_slot(codec_dai, 0xf, 0x1, 4, 24);
+	if (ret < 0) {
+		dev_err(runtime->dev, "can't set codec TDM slot %d\n", ret);
+		return ret;
+	}
+
+	/* NAU88L24 supports 4 butons headset detection
+	 * KEY_MEDIA
+	 * KEY_VOICECOMMAND
+	 * KEY_VOLUMEUP
+	 * KEY_VOLUMEDOWN
+	 */
+	jack_type = SND_JACK_HEADPHONE | SND_JACK_BTN_0 | SND_JACK_BTN_1 |
+		SND_JACK_BTN_2 | SND_JACK_BTN_3;
+	ret = snd_soc_card_jack_new(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_MEDIA);
+	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(codec, 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);
+
+	/* The DSP will covert 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);
+
+	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,
+};
+
+static struct snd_soc_dai_link cht_dailink[] = {
+	/* Front End DAI links */
+	[MERR_DPCM_AUDIO] = {
+		.name = "Audio Port",
+		.stream_name = "Audio",
+		.cpu_dai_name = "media-cpu-dai",
+		.codec_dai_name = "snd-soc-dummy-dai",
+		.codec_name = "snd-soc-dummy",
+		.platform_name = "sst-mfld-platform",
+		.nonatomic = true,
+		.dynamic = 1,
+		.dpcm_playback = 1,
+		.dpcm_capture = 1,
+		.ops = &cht_aif1_ops,
+	},
+	[MERR_DPCM_DEEP_BUFFER] = {
+		.name = "Deep-Buffer Audio Port",
+		.stream_name = "Deep-Buffer Audio",
+		.cpu_dai_name = "deepbuffer-cpu-dai",
+		.codec_dai_name = "snd-soc-dummy-dai",
+		.codec_name = "snd-soc-dummy",
+		.platform_name = "sst-mfld-platform",
+		.nonatomic = true,
+		.dynamic = 1,
+		.dpcm_playback = 1,
+		.ops = &cht_aif1_ops,
+	},
+	[MERR_DPCM_COMPR] = {
+		.name = "Compressed Port",
+		.stream_name = "Compress",
+		.cpu_dai_name = "compress-cpu-dai",
+		.codec_dai_name = "snd-soc-dummy-dai",
+		.codec_name = "snd-soc-dummy",
+		.platform_name = "sst-mfld-platform",
+	},
+	/* Back End DAI links */
+	{
+		/* SSP2 - Codec */
+		.name = "SSP2-Codec",
+		.id = 1,
+		.cpu_dai_name = "ssp2-port",
+		.platform_name = "sst-mfld-platform",
+		.no_pcm = 1,
+		.codec_dai_name = NAU8824_CODEC_DAI,
+		.codec_name = "i2c-10508824:00",
+		.dai_fmt = SND_SOC_DAIFMT_DSP_B | SND_SOC_DAIFMT_IB_NF
+			| SND_SOC_DAIFMT_CBS_CFS,
+		.init = cht_codec_init,
+		.be_hw_params_fixup = cht_codec_fixup,
+		.dpcm_playback = 1,
+		.dpcm_capture = 1,
+		.ops = &cht_be_ssp2_ops,
+	},
+};
+
+/* SoC card */
+static struct snd_soc_card snd_soc_card_cht = {
+	.name = "chtnau8824",
+	.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;
+	int ret_val;
+
+	drv = devm_kzalloc(&pdev->dev, sizeof(*drv), GFP_ATOMIC);
+	if (!drv)
+		return -ENOMEM;
+	snd_soc_card_set_drvdata(&snd_soc_card_cht, drv);
+
+	/* register the soc card */
+	snd_soc_card_cht.dev = &pdev->dev;
+	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");
diff --git a/sound/soc/intel/common/soc-acpi-intel-cht-match.c b/sound/soc/intel/common/soc-acpi-intel-cht-match.c
index b50a0d5..ad1eb2d 100644
--- a/sound/soc/intel/common/soc-acpi-intel-cht-match.c
+++ b/sound/soc/intel/common/soc-acpi-intel-cht-match.c
@@ -118,6 +118,15 @@ struct snd_soc_acpi_mach  snd_soc_acpi_intel_cherrytrail_machines[] = {
 		.asoc_plat_name = "sst-mfld-platform",
 	},
 	{
+		.id = "10508824",
+		.drv_name = "cht-bsw-nau8824",
+		.fw_filename = "intel/fw_sst_22a8.bin",
+		.board = "cht-bsw",
+		.sof_fw_filename = "intel/reef-cht.ri",
+		.sof_tplg_filename = "intel/reef-cht-nau8824.tplg",
+		.asoc_plat_name = "sst-mfld-platform",
+	},
+	{
 		.id = "DLGS7212",
 		.drv_name = "bytcht_da7213",
 		.fw_filename = "intel/fw_sst_22a8.bin",
-- 
2.6.4