1// SPDX-License-Identifier: GPL-2.0-only
  2/*
  3 * Intel Baytrail SST MAX98090 machine driver
  4 * Copyright (c) 2014, Intel Corporation.
  5 */
  6
  7#include <linux/init.h>
  8#include <linux/module.h>
  9#include <linux/platform_device.h>
 10#include <linux/acpi.h>
 11#include <linux/device.h>
 12#include <linux/gpio.h>
 13#include <linux/gpio/consumer.h>
 14#include <linux/slab.h>
 15#include <sound/pcm.h>
 16#include <sound/pcm_params.h>
 17#include <sound/soc.h>
 18#include <sound/jack.h>
 19#include "../../codecs/max98090.h"
 20
 21struct byt_max98090_private {
 22	struct snd_soc_jack jack;
 23};
 24
 25static const struct snd_soc_dapm_widget byt_max98090_widgets[] = {
 26	SND_SOC_DAPM_HP("Headphone", NULL),
 27	SND_SOC_DAPM_MIC("Headset Mic", NULL),
 28	SND_SOC_DAPM_MIC("Int Mic", NULL),
 29	SND_SOC_DAPM_SPK("Ext Spk", NULL),
 30};
 31
 32static const struct snd_soc_dapm_route byt_max98090_audio_map[] = {
 33	{"IN34", NULL, "Headset Mic"},
 34	{"Headset Mic", NULL, "MICBIAS"},
 35	{"DMICL", NULL, "Int Mic"},
 36	{"Headphone", NULL, "HPL"},
 37	{"Headphone", NULL, "HPR"},
 38	{"Ext Spk", NULL, "SPKL"},
 39	{"Ext Spk", NULL, "SPKR"},
 40};
 41
 42static const struct snd_kcontrol_new byt_max98090_controls[] = {
 43	SOC_DAPM_PIN_SWITCH("Headphone"),
 44	SOC_DAPM_PIN_SWITCH("Headset Mic"),
 45	SOC_DAPM_PIN_SWITCH("Int Mic"),
 46	SOC_DAPM_PIN_SWITCH("Ext Spk"),
 47};
 48
 49static struct snd_soc_jack_pin hs_jack_pins[] = {
 50	{
 51		.pin	= "Headphone",
 52		.mask	= SND_JACK_HEADPHONE,
 53	},
 54	{
 55		.pin	= "Headset Mic",
 56		.mask	= SND_JACK_MICROPHONE,
 57	},
 58};
 59
 60static struct snd_soc_jack_gpio hs_jack_gpios[] = {
 61	{
 62		.name		= "hp",
 63		.report		= SND_JACK_HEADPHONE | SND_JACK_LINEOUT,
 64		.debounce_time	= 200,
 65	},
 66	{
 67		.name		= "mic",
 68		.invert		= 1,
 69		.report		= SND_JACK_MICROPHONE,
 70		.debounce_time	= 200,
 71	},
 72};
 73
 74static const struct acpi_gpio_params hp_gpios = { 0, 0, false };
 75static const struct acpi_gpio_params mic_gpios = { 1, 0, false };
 76
 77static const struct acpi_gpio_mapping acpi_byt_max98090_gpios[] = {
 78	{ "hp-gpios", &hp_gpios, 1 },
 79	{ "mic-gpios", &mic_gpios, 1 },
 80	{},
 81};
 82
 83static int byt_max98090_init(struct snd_soc_pcm_runtime *runtime)
 84{
 85	int ret;
 86	struct snd_soc_card *card = runtime->card;
 87	struct byt_max98090_private *drv = snd_soc_card_get_drvdata(card);
 88	struct snd_soc_jack *jack = &drv->jack;
 89
 90	card->dapm.idle_bias_off = true;
 91
 92	ret = snd_soc_dai_set_sysclk(runtime->codec_dai,
 93				     M98090_REG_SYSTEM_CLOCK,
 94				     25000000, SND_SOC_CLOCK_IN);
 95	if (ret < 0) {
 96		dev_err(card->dev, "Can't set codec clock %d\n", ret);
 97		return ret;
 98	}
 99
100	/* Enable jack detection */
101	ret = snd_soc_card_jack_new(runtime->card, "Headset",
102				    SND_JACK_LINEOUT | SND_JACK_HEADSET, jack,
103				    hs_jack_pins, ARRAY_SIZE(hs_jack_pins));
104	if (ret)
105		return ret;
106
107	return snd_soc_jack_add_gpiods(card->dev->parent, jack,
108				       ARRAY_SIZE(hs_jack_gpios),
109				       hs_jack_gpios);
110}
111
112SND_SOC_DAILINK_DEFS(baytrail,
113	DAILINK_COMP_ARRAY(COMP_CPU("baytrail-pcm-audio")),
114	DAILINK_COMP_ARRAY(COMP_CODEC("i2c-193C9890:00", "HiFi")),
115	DAILINK_COMP_ARRAY(COMP_PLATFORM("baytrail-pcm-audio")));
116
117static struct snd_soc_dai_link byt_max98090_dais[] = {
118	{
119		.name = "Baytrail Audio",
120		.stream_name = "Audio",
121		.init = byt_max98090_init,
122		.dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
123			   SND_SOC_DAIFMT_CBS_CFS,
124		SND_SOC_DAILINK_REG(baytrail),
125	},
126};
127
128static struct snd_soc_card byt_max98090_card = {
129	.name = "byt-max98090",
130	.owner = THIS_MODULE,
131	.dai_link = byt_max98090_dais,
132	.num_links = ARRAY_SIZE(byt_max98090_dais),
133	.dapm_widgets = byt_max98090_widgets,
134	.num_dapm_widgets = ARRAY_SIZE(byt_max98090_widgets),
135	.dapm_routes = byt_max98090_audio_map,
136	.num_dapm_routes = ARRAY_SIZE(byt_max98090_audio_map),
137	.controls = byt_max98090_controls,
138	.num_controls = ARRAY_SIZE(byt_max98090_controls),
139	.fully_routed = true,
140};
141
142static int byt_max98090_probe(struct platform_device *pdev)
143{
144	struct device *dev = &pdev->dev;
145	struct byt_max98090_private *priv;
146	int ret_val;
147
148	priv = devm_kzalloc(&pdev->dev, sizeof(*priv), GFP_KERNEL);
149	if (!priv) {
150		dev_err(&pdev->dev, "allocation failed\n");
151		return -ENOMEM;
152	}
153
154	ret_val = devm_acpi_dev_add_driver_gpios(dev->parent, acpi_byt_max98090_gpios);
155	if (ret_val)
156		dev_dbg(dev, "Unable to add GPIO mapping table\n");
157
158	byt_max98090_card.dev = &pdev->dev;
159	snd_soc_card_set_drvdata(&byt_max98090_card, priv);
160	ret_val = devm_snd_soc_register_card(&pdev->dev, &byt_max98090_card);
161	if (ret_val) {
162		dev_err(&pdev->dev,
163			"snd_soc_register_card failed %d\n", ret_val);
164		return ret_val;
165	}
166
167	return 0;
168}
169
170static struct platform_driver byt_max98090_driver = {
171	.probe = byt_max98090_probe,
172	.driver = {
173		.name = "byt-max98090",
174		.pm = &snd_soc_pm_ops,
175	},
176};
177module_platform_driver(byt_max98090_driver)
178
179MODULE_DESCRIPTION("ASoC Intel(R) Baytrail Machine driver");
180MODULE_AUTHOR("Omair Md Abdullah, Jarkko Nikula");
181MODULE_LICENSE("GPL v2");
182MODULE_ALIAS("platform:byt-max98090");