1/*
  2 * Intel Baytrail SST MAX98090 machine driver
  3 * Copyright (c) 2014, Intel Corporation.
  4 *
  5 * This program is free software; you can redistribute it and/or modify it
  6 * under the terms and conditions of the GNU General Public License,
  7 * version 2, as published by the Free Software Foundation.
  8 *
  9 * This program is distributed in the hope it will be useful, but WITHOUT
 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 11 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
 12 * more details.
 13 */
 14
 15#include <linux/init.h>
 16#include <linux/module.h>
 17#include <linux/platform_device.h>
 18#include <linux/acpi.h>
 19#include <linux/device.h>
 20#include <linux/gpio.h>
 21#include <linux/gpio/consumer.h>
 22#include <linux/slab.h>
 23#include <sound/pcm.h>
 24#include <sound/pcm_params.h>
 25#include <sound/soc.h>
 26#include <sound/jack.h>
 27#include "../../codecs/max98090.h"
 28
 29struct byt_max98090_private {
 30	struct snd_soc_jack jack;
 31};
 32
 33static const struct snd_soc_dapm_widget byt_max98090_widgets[] = {
 34	SND_SOC_DAPM_HP("Headphone", NULL),
 35	SND_SOC_DAPM_MIC("Headset Mic", NULL),
 36	SND_SOC_DAPM_MIC("Int Mic", NULL),
 37	SND_SOC_DAPM_SPK("Ext Spk", NULL),
 38};
 39
 40static const struct snd_soc_dapm_route byt_max98090_audio_map[] = {
 41	{"IN34", NULL, "Headset Mic"},
 42	{"Headset Mic", NULL, "MICBIAS"},
 43	{"DMICL", NULL, "Int Mic"},
 44	{"Headphone", NULL, "HPL"},
 45	{"Headphone", NULL, "HPR"},
 46	{"Ext Spk", NULL, "SPKL"},
 47	{"Ext Spk", NULL, "SPKR"},
 48};
 49
 50static const struct snd_kcontrol_new byt_max98090_controls[] = {
 51	SOC_DAPM_PIN_SWITCH("Headphone"),
 52	SOC_DAPM_PIN_SWITCH("Headset Mic"),
 53	SOC_DAPM_PIN_SWITCH("Int Mic"),
 54	SOC_DAPM_PIN_SWITCH("Ext Spk"),
 55};
 56
 57static struct snd_soc_jack_pin hs_jack_pins[] = {
 58	{
 59		.pin	= "Headphone",
 60		.mask	= SND_JACK_HEADPHONE,
 61	},
 62	{
 63		.pin	= "Headset Mic",
 64		.mask	= SND_JACK_MICROPHONE,
 65	},
 66};
 67
 68static struct snd_soc_jack_gpio hs_jack_gpios[] = {
 69	{
 70		.name		= "hp",
 71		.report		= SND_JACK_HEADPHONE | SND_JACK_LINEOUT,
 72		.debounce_time	= 200,
 73	},
 74	{
 75		.name		= "mic",
 76		.invert		= 1,
 77		.report		= SND_JACK_MICROPHONE,
 78		.debounce_time	= 200,
 79	},
 80};
 81
 82static const struct acpi_gpio_params hp_gpios = { 0, 0, false };
 83static const struct acpi_gpio_params mic_gpios = { 1, 0, false };
 84
 85static const struct acpi_gpio_mapping acpi_byt_max98090_gpios[] = {
 86	{ "hp-gpios", &hp_gpios, 1 },
 87	{ "mic-gpios", &mic_gpios, 1 },
 88	{},
 89};
 90
 91static int byt_max98090_init(struct snd_soc_pcm_runtime *runtime)
 92{
 93	int ret;
 94	struct snd_soc_card *card = runtime->card;
 95	struct byt_max98090_private *drv = snd_soc_card_get_drvdata(card);
 96	struct snd_soc_jack *jack = &drv->jack;
 97
 98	card->dapm.idle_bias_off = true;
 99
100	ret = snd_soc_dai_set_sysclk(runtime->codec_dai,
101				     M98090_REG_SYSTEM_CLOCK,
102				     25000000, SND_SOC_CLOCK_IN);
103	if (ret < 0) {
104		dev_err(card->dev, "Can't set codec clock %d\n", ret);
105		return ret;
106	}
107
108	/* Enable jack detection */
109	ret = snd_soc_card_jack_new(runtime->card, "Headset",
110				    SND_JACK_LINEOUT | SND_JACK_HEADSET, jack,
111				    hs_jack_pins, ARRAY_SIZE(hs_jack_pins));
112	if (ret)
113		return ret;
114
115	return snd_soc_jack_add_gpiods(card->dev->parent, jack,
116				       ARRAY_SIZE(hs_jack_gpios),
117				       hs_jack_gpios);
118}
119
120static struct snd_soc_dai_link byt_max98090_dais[] = {
121	{
122		.name = "Baytrail Audio",
123		.stream_name = "Audio",
124		.cpu_dai_name = "baytrail-pcm-audio",
125		.codec_dai_name = "HiFi",
126		.codec_name = "i2c-193C9890:00",
127		.platform_name = "baytrail-pcm-audio",
128		.init = byt_max98090_init,
129		.dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
130			   SND_SOC_DAIFMT_CBS_CFS,
131	},
132};
133
134static struct snd_soc_card byt_max98090_card = {
135	.name = "byt-max98090",
136	.owner = THIS_MODULE,
137	.dai_link = byt_max98090_dais,
138	.num_links = ARRAY_SIZE(byt_max98090_dais),
139	.dapm_widgets = byt_max98090_widgets,
140	.num_dapm_widgets = ARRAY_SIZE(byt_max98090_widgets),
141	.dapm_routes = byt_max98090_audio_map,
142	.num_dapm_routes = ARRAY_SIZE(byt_max98090_audio_map),
143	.controls = byt_max98090_controls,
144	.num_controls = ARRAY_SIZE(byt_max98090_controls),
145	.fully_routed = true,
146};
147
148static int byt_max98090_probe(struct platform_device *pdev)
149{
150	struct device *dev = &pdev->dev;
151	struct byt_max98090_private *priv;
152	int ret_val;
153
154	priv = devm_kzalloc(&pdev->dev, sizeof(*priv), GFP_ATOMIC);
155	if (!priv) {
156		dev_err(&pdev->dev, "allocation failed\n");
157		return -ENOMEM;
158	}
159
160	ret_val = devm_acpi_dev_add_driver_gpios(dev->parent, acpi_byt_max98090_gpios);
161	if (ret_val)
162		dev_dbg(dev, "Unable to add GPIO mapping table\n");
163
164	byt_max98090_card.dev = &pdev->dev;
165	snd_soc_card_set_drvdata(&byt_max98090_card, priv);
166	ret_val = devm_snd_soc_register_card(&pdev->dev, &byt_max98090_card);
167	if (ret_val) {
168		dev_err(&pdev->dev,
169			"snd_soc_register_card failed %d\n", ret_val);
170		return ret_val;
171	}
172
173	return 0;
174}
175
176static struct platform_driver byt_max98090_driver = {
177	.probe = byt_max98090_probe,
178	.driver = {
179		.name = "byt-max98090",
180		.pm = &snd_soc_pm_ops,
181	},
182};
183module_platform_driver(byt_max98090_driver)
184
185MODULE_DESCRIPTION("ASoC Intel(R) Baytrail Machine driver");
186MODULE_AUTHOR("Omair Md Abdullah, Jarkko Nikula");
187MODULE_LICENSE("GPL v2");
188MODULE_ALIAS("platform:byt-max98090");