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

// 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");