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 
15 static struct snd_soc_jack mt8173_max98090_jack;
16 
17 static 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 
28 static 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 
35 static 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 
45 static 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 
mt8173_max98090_hw_params(struct snd_pcm_substream * substream,struct snd_pcm_hw_params * params)52 static 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 
62 static const struct snd_soc_ops mt8173_max98090_ops = {
63 	.hw_params = mt8173_max98090_hw_params,
64 };
65 
mt8173_max98090_init(struct snd_soc_pcm_runtime * runtime)66 static 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_pins(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 
85 SND_SOC_DAILINK_DEFS(playback,
86 	DAILINK_COMP_ARRAY(COMP_CPU("DL1")),
87 	DAILINK_COMP_ARRAY(COMP_DUMMY()),
88 	DAILINK_COMP_ARRAY(COMP_EMPTY()));
89 
90 SND_SOC_DAILINK_DEFS(capture,
91 	DAILINK_COMP_ARRAY(COMP_CPU("VUL")),
92 	DAILINK_COMP_ARRAY(COMP_DUMMY()),
93 	DAILINK_COMP_ARRAY(COMP_EMPTY()));
94 
95 SND_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 */
101 static 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 
133 static 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 
mt8173_max98090_dev_probe(struct platform_device * pdev)146 static 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 
182 	of_node_put(codec_node);
183 
184 put_platform_node:
185 	of_node_put(platform_node);
186 	return ret;
187 }
188 
189 static const struct of_device_id mt8173_max98090_dt_match[] = {
190 	{ .compatible = "mediatek,mt8173-max98090", },
191 	{ }
192 };
193 MODULE_DEVICE_TABLE(of, mt8173_max98090_dt_match);
194 
195 static struct platform_driver mt8173_max98090_driver = {
196 	.driver = {
197 		   .name = "mt8173-max98090",
198 		   .of_match_table = mt8173_max98090_dt_match,
199 		   .pm = &snd_soc_pm_ops,
200 	},
201 	.probe = mt8173_max98090_dev_probe,
202 };
203 
204 module_platform_driver(mt8173_max98090_driver);
205 
206 /* Module information */
207 MODULE_DESCRIPTION("MT8173 MAX98090 ALSA SoC machine driver");
208 MODULE_AUTHOR("Koro Chen <koro.chen@mediatek.com>");
209 MODULE_LICENSE("GPL v2");
210 MODULE_ALIAS("platform:mt8173-max98090");
211 
212