1/*
2 * mt8173-max98090.c  --  MT8173 MAX98090 ALSA SoC machine driver
3 *
4 * Copyright (c) 2015 MediaTek Inc.
5 * Author: Koro Chen <koro.chen@mediatek.com>
6 *
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License version 2 and
9 * only version 2 as published by the Free Software Foundation.
10 *
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
14 * GNU General Public License for more details.
15 */
16
17#include <linux/module.h>
18#include <sound/soc.h>
19#include <sound/jack.h>
20#include <linux/gpio.h>
21#include "../codecs/max98090.h"
22
23static struct snd_soc_jack mt8173_max98090_jack;
24
25static struct snd_soc_jack_pin mt8173_max98090_jack_pins[] = {
26	{
27		.pin	= "Headphone",
28		.mask	= SND_JACK_HEADPHONE,
29	},
30	{
31		.pin	= "Headset Mic",
32		.mask	= SND_JACK_MICROPHONE,
33	},
34};
35
36static const struct snd_soc_dapm_widget mt8173_max98090_widgets[] = {
37	SND_SOC_DAPM_SPK("Speaker", NULL),
38	SND_SOC_DAPM_MIC("Int Mic", NULL),
39	SND_SOC_DAPM_HP("Headphone", NULL),
40	SND_SOC_DAPM_MIC("Headset Mic", NULL),
41};
42
43static const struct snd_soc_dapm_route mt8173_max98090_routes[] = {
44	{"Speaker", NULL, "SPKL"},
45	{"Speaker", NULL, "SPKR"},
46	{"DMICL", NULL, "Int Mic"},
47	{"Headphone", NULL, "HPL"},
48	{"Headphone", NULL, "HPR"},
49	{"Headset Mic", NULL, "MICBIAS"},
50	{"IN34", NULL, "Headset Mic"},
51};
52
53static const struct snd_kcontrol_new mt8173_max98090_controls[] = {
54	SOC_DAPM_PIN_SWITCH("Speaker"),
55	SOC_DAPM_PIN_SWITCH("Int Mic"),
56	SOC_DAPM_PIN_SWITCH("Headphone"),
57	SOC_DAPM_PIN_SWITCH("Headset Mic"),
58};
59
60static int mt8173_max98090_hw_params(struct snd_pcm_substream *substream,
61				     struct snd_pcm_hw_params *params)
62{
63	struct snd_soc_pcm_runtime *rtd = substream->private_data;
64	struct snd_soc_dai *codec_dai = rtd->codec_dai;
65
66	return snd_soc_dai_set_sysclk(codec_dai, 0, params_rate(params) * 256,
67				      SND_SOC_CLOCK_IN);
68}
69
70static struct snd_soc_ops mt8173_max98090_ops = {
71	.hw_params = mt8173_max98090_hw_params,
72};
73
74static int mt8173_max98090_init(struct snd_soc_pcm_runtime *runtime)
75{
76	int ret;
77	struct snd_soc_card *card = runtime->card;
78	struct snd_soc_codec *codec = runtime->codec;
79
80	/* enable jack detection */
81	ret = snd_soc_card_jack_new(card, "Headphone", SND_JACK_HEADPHONE,
82				    &mt8173_max98090_jack, NULL, 0);
83	if (ret) {
84		dev_err(card->dev, "Can't snd_soc_jack_new %d\n", ret);
85		return ret;
86	}
87
88	ret = snd_soc_jack_add_pins(&mt8173_max98090_jack,
89				    ARRAY_SIZE(mt8173_max98090_jack_pins),
90				    mt8173_max98090_jack_pins);
91	if (ret) {
92		dev_err(card->dev, "Can't snd_soc_jack_add_pins %d\n", ret);
93		return ret;
94	}
95
96	return max98090_mic_detect(codec, &mt8173_max98090_jack);
97}
98
99/* Digital audio interface glue - connects codec <---> CPU */
100static struct snd_soc_dai_link mt8173_max98090_dais[] = {
101	/* Front End DAI links */
102	{
103		.name = "MAX98090 Playback",
104		.stream_name = "MAX98090 Playback",
105		.cpu_dai_name = "DL1",
106		.codec_name = "snd-soc-dummy",
107		.codec_dai_name = "snd-soc-dummy-dai",
108		.trigger = {SND_SOC_DPCM_TRIGGER_POST, SND_SOC_DPCM_TRIGGER_POST},
109		.dynamic = 1,
110		.dpcm_playback = 1,
111	},
112	{
113		.name = "MAX98090 Capture",
114		.stream_name = "MAX98090 Capture",
115		.cpu_dai_name = "VUL",
116		.codec_name = "snd-soc-dummy",
117		.codec_dai_name = "snd-soc-dummy-dai",
118		.trigger = {SND_SOC_DPCM_TRIGGER_POST, SND_SOC_DPCM_TRIGGER_POST},
119		.dynamic = 1,
120		.dpcm_capture = 1,
121	},
122	/* Back End DAI links */
123	{
124		.name = "Codec",
125		.cpu_dai_name = "I2S",
126		.no_pcm = 1,
127		.codec_dai_name = "HiFi",
128		.init = mt8173_max98090_init,
129		.ops = &mt8173_max98090_ops,
130		.dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
131			   SND_SOC_DAIFMT_CBS_CFS,
132		.dpcm_playback = 1,
133		.dpcm_capture = 1,
134	},
135};
136
137static struct snd_soc_card mt8173_max98090_card = {
138	.name = "mt8173-max98090",
139	.owner = THIS_MODULE,
140	.dai_link = mt8173_max98090_dais,
141	.num_links = ARRAY_SIZE(mt8173_max98090_dais),
142	.controls = mt8173_max98090_controls,
143	.num_controls = ARRAY_SIZE(mt8173_max98090_controls),
144	.dapm_widgets = mt8173_max98090_widgets,
145	.num_dapm_widgets = ARRAY_SIZE(mt8173_max98090_widgets),
146	.dapm_routes = mt8173_max98090_routes,
147	.num_dapm_routes = ARRAY_SIZE(mt8173_max98090_routes),
148};
149
150static int mt8173_max98090_dev_probe(struct platform_device *pdev)
151{
152	struct snd_soc_card *card = &mt8173_max98090_card;
153	struct device_node *codec_node, *platform_node;
154	int ret, i;
155
156	platform_node = of_parse_phandle(pdev->dev.of_node,
157					 "mediatek,platform", 0);
158	if (!platform_node) {
159		dev_err(&pdev->dev, "Property 'platform' missing or invalid\n");
160		return -EINVAL;
161	}
162	for (i = 0; i < card->num_links; i++) {
163		if (mt8173_max98090_dais[i].platform_name)
164			continue;
165		mt8173_max98090_dais[i].platform_of_node = platform_node;
166	}
167
168	codec_node = of_parse_phandle(pdev->dev.of_node,
169				      "mediatek,audio-codec", 0);
170	if (!codec_node) {
171		dev_err(&pdev->dev,
172			"Property 'audio-codec' missing or invalid\n");
173		return -EINVAL;
174	}
175	for (i = 0; i < card->num_links; i++) {
176		if (mt8173_max98090_dais[i].codec_name)
177			continue;
178		mt8173_max98090_dais[i].codec_of_node = codec_node;
179	}
180	card->dev = &pdev->dev;
181
182	ret = devm_snd_soc_register_card(&pdev->dev, card);
183	if (ret)
184		dev_err(&pdev->dev, "%s snd_soc_register_card fail %d\n",
185			__func__, ret);
186	return ret;
187}
188
189static const struct of_device_id mt8173_max98090_dt_match[] = {
190	{ .compatible = "mediatek,mt8173-max98090", },
191	{ }
192};
193MODULE_DEVICE_TABLE(of, mt8173_max98090_dt_match);
194
195static struct platform_driver mt8173_max98090_driver = {
196	.driver = {
197		   .name = "mt8173-max98090",
198		   .of_match_table = mt8173_max98090_dt_match,
199#ifdef CONFIG_PM
200		   .pm = &snd_soc_pm_ops,
201#endif
202	},
203	.probe = mt8173_max98090_dev_probe,
204};
205
206module_platform_driver(mt8173_max98090_driver);
207
208/* Module information */
209MODULE_DESCRIPTION("MT8173 MAX98090 ALSA SoC machine driver");
210MODULE_AUTHOR("Koro Chen <koro.chen@mediatek.com>");
211MODULE_LICENSE("GPL v2");
212MODULE_ALIAS("platform:mt8173-max98090");
213
214