1// SPDX-License-Identifier: GPL-2.0
2/*
3 * mt8173-max98090.c  --  MT8173 MAX98090 ALSA SoC machine driver
4 *
5 * Copyright (c) 2015 MediaTek Inc.
6 * Author: Koro Chen <koro.chen@mediatek.com>
7 */
8
9#include <linux/module.h>
10#include <sound/soc.h>
11#include <sound/jack.h>
12#include <linux/gpio.h>
13#include "../../codecs/max98090.h"
14
15static struct snd_soc_jack mt8173_max98090_jack;
16
17static struct snd_soc_jack_pin mt8173_max98090_jack_pins[] = {
18	{
19		.pin	= "Headphone",
20		.mask	= SND_JACK_HEADPHONE,
21	},
22	{
23		.pin	= "Headset Mic",
24		.mask	= SND_JACK_MICROPHONE,
25	},
26};
27
28static const struct snd_soc_dapm_widget mt8173_max98090_widgets[] = {
29	SND_SOC_DAPM_SPK("Speaker", NULL),
30	SND_SOC_DAPM_MIC("Int Mic", NULL),
31	SND_SOC_DAPM_HP("Headphone", NULL),
32	SND_SOC_DAPM_MIC("Headset Mic", NULL),
33};
34
35static const struct snd_soc_dapm_route mt8173_max98090_routes[] = {
36	{"Speaker", NULL, "SPKL"},
37	{"Speaker", NULL, "SPKR"},
38	{"DMICL", NULL, "Int Mic"},
39	{"Headphone", NULL, "HPL"},
40	{"Headphone", NULL, "HPR"},
41	{"Headset Mic", NULL, "MICBIAS"},
42	{"IN34", NULL, "Headset Mic"},
43};
44
45static const struct snd_kcontrol_new mt8173_max98090_controls[] = {
46	SOC_DAPM_PIN_SWITCH("Speaker"),
47	SOC_DAPM_PIN_SWITCH("Int Mic"),
48	SOC_DAPM_PIN_SWITCH("Headphone"),
49	SOC_DAPM_PIN_SWITCH("Headset Mic"),
50};
51
52static int mt8173_max98090_hw_params(struct snd_pcm_substream *substream,
53				     struct snd_pcm_hw_params *params)
54{
55	struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream);
56	struct snd_soc_dai *codec_dai = asoc_rtd_to_codec(rtd, 0);
57
58	return snd_soc_dai_set_sysclk(codec_dai, 0, params_rate(params) * 256,
59				      SND_SOC_CLOCK_IN);
60}
61
62static const struct snd_soc_ops mt8173_max98090_ops = {
63	.hw_params = mt8173_max98090_hw_params,
64};
65
66static int mt8173_max98090_init(struct snd_soc_pcm_runtime *runtime)
67{
68	int ret;
69	struct snd_soc_card *card = runtime->card;
70	struct snd_soc_component *component = asoc_rtd_to_codec(runtime, 0)->component;
71
72	/* enable jack detection */
73	ret = snd_soc_card_jack_new(card, "Headphone", SND_JACK_HEADPHONE,
74				    &mt8173_max98090_jack,
75				    mt8173_max98090_jack_pins,
76				    ARRAY_SIZE(mt8173_max98090_jack_pins));
77	if (ret) {
78		dev_err(card->dev, "Can't create a new Jack %d\n", ret);
79		return ret;
80	}
81
82	return max98090_mic_detect(component, &mt8173_max98090_jack);
83}
84
85SND_SOC_DAILINK_DEFS(playback,
86	DAILINK_COMP_ARRAY(COMP_CPU("DL1")),
87	DAILINK_COMP_ARRAY(COMP_DUMMY()),
88	DAILINK_COMP_ARRAY(COMP_EMPTY()));
89
90SND_SOC_DAILINK_DEFS(capture,
91	DAILINK_COMP_ARRAY(COMP_CPU("VUL")),
92	DAILINK_COMP_ARRAY(COMP_DUMMY()),
93	DAILINK_COMP_ARRAY(COMP_EMPTY()));
94
95SND_SOC_DAILINK_DEFS(hifi,
96	DAILINK_COMP_ARRAY(COMP_CPU("I2S")),
97	DAILINK_COMP_ARRAY(COMP_CODEC(NULL, "HiFi")),
98	DAILINK_COMP_ARRAY(COMP_EMPTY()));
99
100/* Digital audio interface glue - connects codec <---> CPU */
101static struct snd_soc_dai_link mt8173_max98090_dais[] = {
102	/* Front End DAI links */
103	{
104		.name = "MAX98090 Playback",
105		.stream_name = "MAX98090 Playback",
106		.trigger = {SND_SOC_DPCM_TRIGGER_POST, SND_SOC_DPCM_TRIGGER_POST},
107		.dynamic = 1,
108		.dpcm_playback = 1,
109		SND_SOC_DAILINK_REG(playback),
110	},
111	{
112		.name = "MAX98090 Capture",
113		.stream_name = "MAX98090 Capture",
114		.trigger = {SND_SOC_DPCM_TRIGGER_POST, SND_SOC_DPCM_TRIGGER_POST},
115		.dynamic = 1,
116		.dpcm_capture = 1,
117		SND_SOC_DAILINK_REG(capture),
118	},
119	/* Back End DAI links */
120	{
121		.name = "Codec",
122		.no_pcm = 1,
123		.init = mt8173_max98090_init,
124		.ops = &mt8173_max98090_ops,
125		.dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
126			   SND_SOC_DAIFMT_CBS_CFS,
127		.dpcm_playback = 1,
128		.dpcm_capture = 1,
129		SND_SOC_DAILINK_REG(hifi),
130	},
131};
132
133static struct snd_soc_card mt8173_max98090_card = {
134	.name = "mt8173-max98090",
135	.owner = THIS_MODULE,
136	.dai_link = mt8173_max98090_dais,
137	.num_links = ARRAY_SIZE(mt8173_max98090_dais),
138	.controls = mt8173_max98090_controls,
139	.num_controls = ARRAY_SIZE(mt8173_max98090_controls),
140	.dapm_widgets = mt8173_max98090_widgets,
141	.num_dapm_widgets = ARRAY_SIZE(mt8173_max98090_widgets),
142	.dapm_routes = mt8173_max98090_routes,
143	.num_dapm_routes = ARRAY_SIZE(mt8173_max98090_routes),
144};
145
146static int mt8173_max98090_dev_probe(struct platform_device *pdev)
147{
148	struct snd_soc_card *card = &mt8173_max98090_card;
149	struct device_node *codec_node, *platform_node;
150	struct snd_soc_dai_link *dai_link;
151	int ret, i;
152
153	platform_node = of_parse_phandle(pdev->dev.of_node,
154					 "mediatek,platform", 0);
155	if (!platform_node) {
156		dev_err(&pdev->dev, "Property 'platform' missing or invalid\n");
157		return -EINVAL;
158	}
159	for_each_card_prelinks(card, i, dai_link) {
160		if (dai_link->platforms->name)
161			continue;
162		dai_link->platforms->of_node = platform_node;
163	}
164
165	codec_node = of_parse_phandle(pdev->dev.of_node,
166				      "mediatek,audio-codec", 0);
167	if (!codec_node) {
168		dev_err(&pdev->dev,
169			"Property 'audio-codec' missing or invalid\n");
170		ret = -EINVAL;
171		goto put_platform_node;
172	}
173	for_each_card_prelinks(card, i, dai_link) {
174		if (dai_link->codecs->name)
175			continue;
176		dai_link->codecs->of_node = codec_node;
177	}
178	card->dev = &pdev->dev;
179
180	ret = devm_snd_soc_register_card(&pdev->dev, card);
181	if (ret)
182		dev_err(&pdev->dev, "%s snd_soc_register_card fail %d\n",
183			__func__, ret);
184
185	of_node_put(codec_node);
186
187put_platform_node:
188	of_node_put(platform_node);
189	return ret;
190}
191
192static const struct of_device_id mt8173_max98090_dt_match[] = {
193	{ .compatible = "mediatek,mt8173-max98090", },
194	{ }
195};
196MODULE_DEVICE_TABLE(of, mt8173_max98090_dt_match);
197
198static struct platform_driver mt8173_max98090_driver = {
199	.driver = {
200		   .name = "mt8173-max98090",
201		   .of_match_table = mt8173_max98090_dt_match,
202#ifdef CONFIG_PM
203		   .pm = &snd_soc_pm_ops,
204#endif
205	},
206	.probe = mt8173_max98090_dev_probe,
207};
208
209module_platform_driver(mt8173_max98090_driver);
210
211/* Module information */
212MODULE_DESCRIPTION("MT8173 MAX98090 ALSA SoC machine driver");
213MODULE_AUTHOR("Koro Chen <koro.chen@mediatek.com>");
214MODULE_LICENSE("GPL v2");
215MODULE_ALIAS("platform:mt8173-max98090");
216
217