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

source code of linux/sound/soc/mediatek/mt8173/mt8173-max98090.c