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-gpio",
71		.idx		= 0,
72		.report		= SND_JACK_HEADPHONE | SND_JACK_LINEOUT,
73		.debounce_time	= 200,
74	},
75	{
76		.name		= "mic-gpio",
77		.idx		= 1,
78		.invert		= 1,
79		.report		= SND_JACK_MICROPHONE,
80		.debounce_time	= 200,
81	},
82};
83
84static int byt_max98090_init(struct snd_soc_pcm_runtime *runtime)
85{
86	int ret;
87	struct snd_soc_card *card = runtime->card;
88	struct byt_max98090_private *drv = snd_soc_card_get_drvdata(card);
89	struct snd_soc_jack *jack = &drv->jack;
90
91	card->dapm.idle_bias_off = true;
92
93	ret = snd_soc_dai_set_sysclk(runtime->codec_dai,
94				     M98090_REG_SYSTEM_CLOCK,
95				     25000000, SND_SOC_CLOCK_IN);
96	if (ret < 0) {
97		dev_err(card->dev, "Can't set codec clock %d\n", ret);
98		return ret;
99	}
100
101	/* Enable jack detection */
102	ret = snd_soc_card_jack_new(runtime->card, "Headset",
103				    SND_JACK_LINEOUT | SND_JACK_HEADSET, jack,
104				    hs_jack_pins, ARRAY_SIZE(hs_jack_pins));
105	if (ret)
106		return ret;
107
108	return snd_soc_jack_add_gpiods(card->dev->parent, jack,
109				       ARRAY_SIZE(hs_jack_gpios),
110				       hs_jack_gpios);
111}
112
113static struct snd_soc_dai_link byt_max98090_dais[] = {
114	{
115		.name = "Baytrail Audio",
116		.stream_name = "Audio",
117		.cpu_dai_name = "baytrail-pcm-audio",
118		.codec_dai_name = "HiFi",
119		.codec_name = "i2c-193C9890:00",
120		.platform_name = "baytrail-pcm-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	},
125};
126
127static struct snd_soc_card byt_max98090_card = {
128	.name = "byt-max98090",
129	.dai_link = byt_max98090_dais,
130	.num_links = ARRAY_SIZE(byt_max98090_dais),
131	.dapm_widgets = byt_max98090_widgets,
132	.num_dapm_widgets = ARRAY_SIZE(byt_max98090_widgets),
133	.dapm_routes = byt_max98090_audio_map,
134	.num_dapm_routes = ARRAY_SIZE(byt_max98090_audio_map),
135	.controls = byt_max98090_controls,
136	.num_controls = ARRAY_SIZE(byt_max98090_controls),
137	.fully_routed = true,
138};
139
140static int byt_max98090_probe(struct platform_device *pdev)
141{
142	int ret_val = 0;
143	struct byt_max98090_private *priv;
144
145	priv = devm_kzalloc(&pdev->dev, sizeof(*priv), GFP_ATOMIC);
146	if (!priv) {
147		dev_err(&pdev->dev, "allocation failed\n");
148		return -ENOMEM;
149	}
150
151	byt_max98090_card.dev = &pdev->dev;
152	snd_soc_card_set_drvdata(&byt_max98090_card, priv);
153	ret_val = devm_snd_soc_register_card(&pdev->dev, &byt_max98090_card);
154	if (ret_val) {
155		dev_err(&pdev->dev,
156			"snd_soc_register_card failed %d\n", ret_val);
157		return ret_val;
158	}
159
160	return ret_val;
161}
162
163static int byt_max98090_remove(struct platform_device *pdev)
164{
165	struct snd_soc_card *card = platform_get_drvdata(pdev);
166	struct byt_max98090_private *priv = snd_soc_card_get_drvdata(card);
167
168	snd_soc_jack_free_gpios(&priv->jack, ARRAY_SIZE(hs_jack_gpios),
169				hs_jack_gpios);
170
171	return 0;
172}
173
174static struct platform_driver byt_max98090_driver = {
175	.probe = byt_max98090_probe,
176	.remove = byt_max98090_remove,
177	.driver = {
178		.name = "byt-max98090",
179		.pm = &snd_soc_pm_ops,
180	},
181};
182module_platform_driver(byt_max98090_driver)
183
184MODULE_DESCRIPTION("ASoC Intel(R) Baytrail Machine driver");
185MODULE_AUTHOR("Omair Md Abdullah, Jarkko Nikula");
186MODULE_LICENSE("GPL v2");
187MODULE_ALIAS("platform:byt-max98090");
188