lowland.c

// SPDX-License-Identifier: GPL-2.0+
//
// Lowland audio support
//
// Copyright 2011 Wolfson Microelectronics

#include <sound/soc.h>
#include <sound/soc-dapm.h>
#include <sound/jack.h>
#include <linux/module.h>

#include "../codecs/wm5100.h"
#include "../codecs/wm9081.h"

#define MCLK1_RATE (44100 * 512)
#define CLKOUT_RATE (44100 * 256)

static struct snd_soc_jack lowland_headset;

/* Headset jack detection DAPM pins */
static struct snd_soc_jack_pin lowland_headset_pins[] = {
	{
		.pin = "Headphone",
		.mask = SND_JACK_HEADPHONE,
	},
	{
		.pin = "Headset Mic",
		.mask = SND_JACK_MICROPHONE,
	},
	{
		.pin = "Line Out",
		.mask = SND_JACK_LINEOUT,
	},
};

static int lowland_wm5100_init(struct snd_soc_pcm_runtime *rtd)
{
	struct snd_soc_component *component = snd_soc_rtd_to_codec(rtd, 0)->component;
	int ret;

	ret = snd_soc_component_set_sysclk(component, WM5100_CLK_SYSCLK,
				       WM5100_CLKSRC_MCLK1, MCLK1_RATE,
				       SND_SOC_CLOCK_IN);
	if (ret < 0) {
		pr_err("Failed to set SYSCLK clock source: %d\n", ret);
		return ret;
	}

	/* Clock OPCLK, used by the other audio components. */
	ret = snd_soc_component_set_sysclk(component, WM5100_CLK_OPCLK, 0,
				       CLKOUT_RATE, 0);
	if (ret < 0) {
		pr_err("Failed to set OPCLK rate: %d\n", ret);
		return ret;
	}

	ret = snd_soc_card_jack_new_pins(rtd->card, "Headset",
					 SND_JACK_LINEOUT | SND_JACK_HEADSET |
					 SND_JACK_BTN_0,
					 &lowland_headset, lowland_headset_pins,
					 ARRAY_SIZE(lowland_headset_pins));
	if (ret)
		return ret;

	wm5100_detect(component, &lowland_headset);

	return 0;
}

static int lowland_wm9081_init(struct snd_soc_pcm_runtime *rtd)
{
	struct snd_soc_component *component = snd_soc_rtd_to_codec(rtd, 0)->component;

	snd_soc_dapm_nc_pin(&rtd->card->dapm, "LINEOUT");

	/* At any time the WM9081 is active it will have this clock */
	return snd_soc_component_set_sysclk(component, WM9081_SYSCLK_MCLK, 0,
					CLKOUT_RATE, 0);
}

static const struct snd_soc_pcm_stream sub_params = {
	.formats = SNDRV_PCM_FMTBIT_S32_LE,
	.rate_min = 44100,
	.rate_max = 44100,
	.channels_min = 2,
	.channels_max = 2,
};

SND_SOC_DAILINK_DEFS(cpu,
	DAILINK_COMP_ARRAY(COMP_CPU("samsung-i2s.0")),
	DAILINK_COMP_ARRAY(COMP_CODEC("wm5100.1-001a", "wm5100-aif1")),
	DAILINK_COMP_ARRAY(COMP_PLATFORM("samsung-i2s.0")));

SND_SOC_DAILINK_DEFS(baseband,
	DAILINK_COMP_ARRAY(COMP_CPU("wm5100-aif2")),
	DAILINK_COMP_ARRAY(COMP_CODEC("wm1250-ev1.1-0027", "wm1250-ev1")));

SND_SOC_DAILINK_DEFS(speaker,
	DAILINK_COMP_ARRAY(COMP_CPU("wm5100-aif3")),
	DAILINK_COMP_ARRAY(COMP_CODEC("wm9081.1-006c", "wm9081-hifi")));

static struct snd_soc_dai_link lowland_dai[] = {
	{
		.name = "CPU",
		.stream_name = "CPU",
		.dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
				SND_SOC_DAIFMT_CBP_CFP,
		.init = lowland_wm5100_init,
		SND_SOC_DAILINK_REG(cpu),
	},
	{
		.name = "Baseband",
		.stream_name = "Baseband",
		.dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
				SND_SOC_DAIFMT_CBP_CFP,
		.ignore_suspend = 1,
		SND_SOC_DAILINK_REG(baseband),
	},
	{
		.name = "Sub Speaker",
		.stream_name = "Sub Speaker",
		.dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
				SND_SOC_DAIFMT_CBP_CFP,
		.ignore_suspend = 1,
		.c2c_params = &sub_params,
		.num_c2c_params = 1,
		.init = lowland_wm9081_init,
		SND_SOC_DAILINK_REG(speaker),
	},
};

static struct snd_soc_codec_conf lowland_codec_conf[] = {
	{
		.dlc = COMP_CODEC_CONF("wm9081.1-006c"),
		.name_prefix = "Sub",
	},
};

static const struct snd_kcontrol_new controls[] = {
	SOC_DAPM_PIN_SWITCH("Main Speaker"),
	SOC_DAPM_PIN_SWITCH("Main DMIC"),
	SOC_DAPM_PIN_SWITCH("Main AMIC"),
	SOC_DAPM_PIN_SWITCH("WM1250 Input"),
	SOC_DAPM_PIN_SWITCH("WM1250 Output"),
	SOC_DAPM_PIN_SWITCH("Headphone"),
	SOC_DAPM_PIN_SWITCH("Line Out"),
};

static const struct snd_soc_dapm_widget widgets[] = {
	SND_SOC_DAPM_HP("Headphone", NULL),
	SND_SOC_DAPM_MIC("Headset Mic", NULL),
	SND_SOC_DAPM_LINE("Line Out", NULL),

	SND_SOC_DAPM_SPK("Main Speaker", NULL),

	SND_SOC_DAPM_MIC("Main AMIC", NULL),
	SND_SOC_DAPM_MIC("Main DMIC", NULL),
};

static const struct snd_soc_dapm_route audio_paths[] = {
	{ "Sub IN1", NULL, "HPOUT2L" },
	{ "Sub IN2", NULL, "HPOUT2R" },

	{ "Main Speaker", NULL, "Sub SPKN" },
	{ "Main Speaker", NULL, "Sub SPKP" },
	{ "Main Speaker", NULL, "SPKDAT1" },
};

static struct snd_soc_card lowland = {
	.name = "Lowland",
	.owner = THIS_MODULE,
	.dai_link = lowland_dai,
	.num_links = ARRAY_SIZE(lowland_dai),
	.codec_conf = lowland_codec_conf,
	.num_configs = ARRAY_SIZE(lowland_codec_conf),

	.controls = controls,
	.num_controls = ARRAY_SIZE(controls),
	.dapm_widgets = widgets,
	.num_dapm_widgets = ARRAY_SIZE(widgets),
	.dapm_routes = audio_paths,
	.num_dapm_routes = ARRAY_SIZE(audio_paths),
};

static int lowland_probe(struct platform_device *pdev)
{
	struct snd_soc_card *card = &lowland;
	int ret;

	card->dev = &pdev->dev;

	ret = devm_snd_soc_register_card(&pdev->dev, card);
	if (ret)
		dev_err_probe(&pdev->dev, ret, "snd_soc_register_card() failed\n");

	return ret;
}

static struct platform_driver lowland_driver = {
	.driver = {
		.name = "lowland",
		.pm = &snd_soc_pm_ops,
	},
	.probe = lowland_probe,
};

module_platform_driver(lowland_driver);

MODULE_DESCRIPTION("Lowland audio support");
MODULE_AUTHOR("Mark Brown <[email protected]>");
MODULE_LICENSE("GPL");
MODULE_ALIAS("platform:lowland");