ASoC: Intel: avs: Add ssm4567 machine board

To support AVS-ssm4567 configuration add machine board connecting AVS
platform component driver with ssm4567 codec one.

Signed-off-by: Amadeusz Sławiński <amadeuszx.slawinski@linux.intel.com>
Signed-off-by: Cezary Rojewski <cezary.rojewski@intel.com>
Link: https://lore.kernel.org/r/20220511162403.3987658-12-cezary.rojewski@intel.com
Signed-off-by: Mark Brown <broonie@kernel.org>

sound/soc/intel/avs/boards/Kconfig

@@ -77,4 +77,15 @@ config SND_SOC_INTEL_AVS_MACH_RT5682
 	   Say Y or m if you have such a device. This is a recommended option.
 	   If unsure select "N".
 
+config SND_SOC_INTEL_AVS_MACH_SSM4567
+	tristate "ssm4567 I2S board"
+	depends on I2C
+	depends on MFD_INTEL_LPSS || COMPILE_TEST
+	select SND_SOC_SSM4567
+	help
+	   This adds support for ASoC machine driver with SSM4567 I2S audio codec.
+	   It is meant to be used with AVS driver.
+	   Say Y or m if you have such a device. This is a recommended option.
+	   If unsure select "N".
+
 endmenu

sound/soc/intel/avs/boards/Makefile

@@ -8,6 +8,7 @@ snd-soc-avs-rt274-objs := rt274.o
 snd-soc-avs-rt286-objs := rt286.o
 snd-soc-avs-rt298-objs := rt298.o
 snd-soc-avs-rt5682-objs := rt5682.o
+snd-soc-avs-ssm4567-objs := ssm4567.o
 
 obj-$(CONFIG_SND_SOC_INTEL_AVS_MACH_DMIC) += snd-soc-avs-dmic.o
 obj-$(CONFIG_SND_SOC_INTEL_AVS_MACH_HDAUDIO) += snd-soc-avs-hdaudio.o
@@ -17,3 +18,4 @@ obj-$(CONFIG_SND_SOC_INTEL_AVS_MACH_RT274) += snd-soc-avs-rt274.o
 obj-$(CONFIG_SND_SOC_INTEL_AVS_MACH_RT286) += snd-soc-avs-rt286.o
 obj-$(CONFIG_SND_SOC_INTEL_AVS_MACH_RT298) += snd-soc-avs-rt298.o
 obj-$(CONFIG_SND_SOC_INTEL_AVS_MACH_RT5682) += snd-soc-avs-rt5682.o
+obj-$(CONFIG_SND_SOC_INTEL_AVS_MACH_SSM4567) += snd-soc-avs-ssm4567.o

sound/soc/intel/avs/boards/ssm4567.c

@@ -0,0 +1,271 @@
+// SPDX-License-Identifier: GPL-2.0-only
+//
+// Copyright(c) 2021-2022 Intel Corporation. All rights reserved.
+//
+// Authors: Cezary Rojewski <cezary.rojewski@intel.com>
+//          Amadeusz Slawinski <amadeuszx.slawinski@linux.intel.com>
+//
+
+#include <linux/module.h>
+#include <linux/platform_device.h>
+#include <sound/core.h>
+#include <sound/pcm.h>
+#include <sound/pcm_params.h>
+#include <sound/soc.h>
+#include <sound/soc-acpi.h>
+#include "../../../codecs/nau8825.h"
+
+#define SKL_NUVOTON_CODEC_DAI	"nau8825-hifi"
+#define SKL_SSM_CODEC_DAI	"ssm4567-hifi"
+
+static struct snd_soc_codec_conf card_codec_conf[] = {
+	{
+		.dlc = COMP_CODEC_CONF("i2c-INT343B:00"),
+		.name_prefix = "Left",
+	},
+	{
+		.dlc = COMP_CODEC_CONF("i2c-INT343B:01"),
+		.name_prefix = "Right",
+	},
+};
+
+static const struct snd_kcontrol_new card_controls[] = {
+	SOC_DAPM_PIN_SWITCH("Left Speaker"),
+	SOC_DAPM_PIN_SWITCH("Right Speaker"),
+};
+
+static int
+platform_clock_control(struct snd_soc_dapm_widget *w, struct snd_kcontrol *control, 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;
+
+	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);
+		if (ret < 0)
+			dev_err(card->dev, "set sysclk err = %d\n", ret);
+	} 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 err = %d\n", ret);
+	}
+
+	return ret;
+}
+
+static const struct snd_soc_dapm_widget card_widgets[] = {
+	SND_SOC_DAPM_SPK("Left Speaker", NULL),
+	SND_SOC_DAPM_SPK("Right Speaker", NULL),
+	SND_SOC_DAPM_SPK("DP1", NULL),
+	SND_SOC_DAPM_SPK("DP2", NULL),
+	SND_SOC_DAPM_SUPPLY("Platform Clock", SND_SOC_NOPM, 0, 0, platform_clock_control,
+			    SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMD),
+};
+
+static const struct snd_soc_dapm_route card_base_routes[] = {
+	{"Left Speaker", NULL, "Left OUT"},
+	{"Right Speaker", NULL, "Right OUT"},
+};
+
+static int avs_ssm4567_codec_init(struct snd_soc_pcm_runtime *runtime)
+{
+	int ret;
+
+	/* Slot 1 for left */
+	ret = snd_soc_dai_set_tdm_slot(asoc_rtd_to_codec(runtime, 0), 0x01, 0x01, 2, 48);
+	if (ret < 0)
+		return ret;
+
+	/* Slot 2 for right */
+	ret = snd_soc_dai_set_tdm_slot(asoc_rtd_to_codec(runtime, 1), 0x02, 0x02, 2, 48);
+	if (ret < 0)
+		return ret;
+
+	return 0;
+}
+
+static int
+avs_ssm4567_be_fixup(struct snd_soc_pcm_runtime *runrime, 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 covert the FE rate to 48k, stereo */
+	rate->min = rate->max = 48000;
+	channels->min = channels->max = 2;
+
+	/* set SSP0 to 24 bit */
+	snd_mask_none(fmt);
+	snd_mask_set_format(fmt, SNDRV_PCM_FORMAT_S24_LE);
+	return 0;
+}
+
+static int avs_create_dai_link(struct device *dev, const char *platform_name, int ssp_port,
+			       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;
+
+	platform->name = platform_name;
+
+	dl->name = devm_kasprintf(dev, GFP_KERNEL, "SSP%d-Codec", ssp_port);
+	dl->cpus = devm_kzalloc(dev, sizeof(*dl->cpus), GFP_KERNEL);
+	dl->codecs = devm_kzalloc(dev, sizeof(*dl->codecs) * 2, GFP_KERNEL);
+	if (!dl->name || !dl->cpus || !dl->codecs)
+		return -ENOMEM;
+
+	dl->cpus->dai_name = devm_kasprintf(dev, GFP_KERNEL, "SSP%d Pin", ssp_port);
+	dl->codecs[0].name = devm_kasprintf(dev, GFP_KERNEL, "i2c-INT343B:00");
+	dl->codecs[0].dai_name = devm_kasprintf(dev, GFP_KERNEL, "ssm4567-hifi");
+	dl->codecs[1].name = devm_kasprintf(dev, GFP_KERNEL, "i2c-INT343B:01");
+	dl->codecs[1].dai_name = devm_kasprintf(dev, GFP_KERNEL, "ssm4567-hifi");
+	if (!dl->cpus->dai_name || !dl->codecs[0].name || !dl->codecs[0].dai_name ||
+	    !dl->codecs[1].name || !dl->codecs[1].dai_name)
+		return -ENOMEM;
+
+	dl->num_cpus = 1;
+	dl->num_codecs = 2;
+	dl->platforms = platform;
+	dl->num_platforms = 1;
+	dl->id = 0;
+	dl->dai_fmt = SND_SOC_DAIFMT_DSP_A | SND_SOC_DAIFMT_IB_NF | SND_SOC_DAIFMT_CBS_CFS;
+	dl->init = avs_ssm4567_codec_init;
+	dl->be_hw_params_fixup = avs_ssm4567_be_fixup;
+	dl->nonatomic = 1;
+	dl->no_pcm = 1;
+	dl->dpcm_capture = 1;
+	dl->dpcm_playback = 1;
+	dl->ignore_pmdown_time = 1;
+
+	*dai_link = dl;
+
+	return 0;
+}
+
+static int avs_create_dapm_routes(struct device *dev, int ssp_port,
+				  struct snd_soc_dapm_route **routes, int *num_routes)
+{
+	struct snd_soc_dapm_route *dr;
+	const int num_base = ARRAY_SIZE(card_base_routes);
+	const int num_dr = num_base + 4;
+	int idx;
+
+	dr = devm_kcalloc(dev, num_dr, sizeof(*dr), GFP_KERNEL);
+	if (!dr)
+		return -ENOMEM;
+
+	memcpy(dr, card_base_routes, num_base * sizeof(*dr));
+
+	idx = num_base;
+	dr[idx].sink = devm_kasprintf(dev, GFP_KERNEL, "Left Playback");
+	dr[idx].source = devm_kasprintf(dev, GFP_KERNEL, "ssp%d Tx", ssp_port);
+	if (!dr[idx].sink || !dr[idx].source)
+		return -ENOMEM;
+
+	idx++;
+	dr[idx].sink = devm_kasprintf(dev, GFP_KERNEL, "Right Playback");
+	dr[idx].source = devm_kasprintf(dev, GFP_KERNEL, "ssp%d Tx", ssp_port);
+	if (!dr[idx].sink || !dr[idx].source)
+		return -ENOMEM;
+
+	idx++;
+	dr[idx].sink = devm_kasprintf(dev, GFP_KERNEL, "ssp%d Rx", ssp_port);
+	dr[idx].source = devm_kasprintf(dev, GFP_KERNEL, "Left Capture Sense");
+	if (!dr[idx].sink || !dr[idx].source)
+		return -ENOMEM;
+
+	idx++;
+	dr[idx].sink = devm_kasprintf(dev, GFP_KERNEL, "ssp%d Rx", ssp_port);
+	dr[idx].source = devm_kasprintf(dev, GFP_KERNEL, "Right Capture Sense");
+	if (!dr[idx].sink || !dr[idx].source)
+		return -ENOMEM;
+
+	*routes = dr;
+	*num_routes = num_dr;
+
+	return 0;
+}
+
+static int avs_ssm4567_probe(struct platform_device *pdev)
+{
+	struct snd_soc_dapm_route *routes;
+	struct snd_soc_dai_link *dai_link;
+	struct snd_soc_acpi_mach *mach;
+	struct snd_soc_card *card;
+	struct device *dev = &pdev->dev;
+	const char *pname;
+	int num_routes, ssp_port, ret;
+
+	mach = dev_get_platdata(dev);
+	pname = mach->mach_params.platform;
+	ssp_port = __ffs(mach->mach_params.i2s_link_mask);
+
+	ret = avs_create_dai_link(dev, pname, ssp_port, &dai_link);
+	if (ret) {
+		dev_err(dev, "Failed to create dai link: %d", ret);
+		return ret;
+	}
+
+	ret = avs_create_dapm_routes(dev, ssp_port, &routes, &num_routes);
+	if (ret) {
+		dev_err(dev, "Failed to create dapm routes: %d", ret);
+		return ret;
+	}
+
+	card = devm_kzalloc(dev, sizeof(*card), GFP_KERNEL);
+	if (!card)
+		return -ENOMEM;
+
+	card->name = "avs_ssm4567-adi";
+	card->dev = dev;
+	card->owner = THIS_MODULE;
+	card->dai_link = dai_link;
+	card->num_links = 1;
+	card->codec_conf = card_codec_conf;
+	card->num_configs = ARRAY_SIZE(card_codec_conf);
+	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 = routes;
+	card->num_dapm_routes = num_routes;
+	card->fully_routed = true;
+	card->disable_route_checks = true;
+
+	ret = snd_soc_fixup_dai_links_platform_name(card, pname);
+	if (ret)
+		return ret;
+
+	return devm_snd_soc_register_card(dev, card);
+}
+
+static struct platform_driver avs_ssm4567_driver = {
+	.probe = avs_ssm4567_probe,
+	.driver = {
+		.name = "avs_ssm4567",
+		.pm = &snd_soc_pm_ops,
+	},
+};
+
+module_platform_driver(avs_ssm4567_driver)
+
+MODULE_LICENSE("GPL");
+MODULE_ALIAS("platform:avs_ssm4567");