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
14 static struct snd_soc_jack mt8173_max98090_jack;
15
16 static 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
27 static 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
34 static 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
44 static 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
mt8173_max98090_hw_params(struct snd_pcm_substream * substream,struct snd_pcm_hw_params * params)51 static 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(codec_dai, 0, params_rate(params) * 256,
58 SND_SOC_CLOCK_IN);
59 }
60
61 static const struct snd_soc_ops mt8173_max98090_ops = {
62 .hw_params = mt8173_max98090_hw_params,
63 };
64
mt8173_max98090_init(struct snd_soc_pcm_runtime * runtime)65 static 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, "Headphone", SND_JACK_HEADSET,
73 &mt8173_max98090_jack,
74 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, &mt8173_max98090_jack);
82 }
83
84 SND_SOC_DAILINK_DEFS(playback,
85 DAILINK_COMP_ARRAY(COMP_CPU("DL1")),
86 DAILINK_COMP_ARRAY(COMP_DUMMY()),
87 DAILINK_COMP_ARRAY(COMP_EMPTY()));
88
89 SND_SOC_DAILINK_DEFS(capture,
90 DAILINK_COMP_ARRAY(COMP_CPU("VUL")),
91 DAILINK_COMP_ARRAY(COMP_DUMMY()),
92 DAILINK_COMP_ARRAY(COMP_EMPTY()));
93
94 SND_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 */
100 static 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 .dpcm_playback = 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 .dpcm_capture = 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_CBS_CFS,
126 .dpcm_playback = 1,
127 .dpcm_capture = 1,
128 SND_SOC_DAILINK_REG(hifi),
129 },
130 };
131
132 static struct snd_soc_card mt8173_max98090_card = {
133 .name = "mt8173-max98090",
134 .owner = THIS_MODULE,
135 .dai_link = mt8173_max98090_dais,
136 .num_links = ARRAY_SIZE(mt8173_max98090_dais),
137 .controls = mt8173_max98090_controls,
138 .num_controls = ARRAY_SIZE(mt8173_max98090_controls),
139 .dapm_widgets = mt8173_max98090_widgets,
140 .num_dapm_widgets = ARRAY_SIZE(mt8173_max98090_widgets),
141 .dapm_routes = mt8173_max98090_routes,
142 .num_dapm_routes = ARRAY_SIZE(mt8173_max98090_routes),
143 };
144
mt8173_max98090_dev_probe(struct platform_device * pdev)145 static int mt8173_max98090_dev_probe(struct platform_device *pdev)
146 {
147 struct snd_soc_card *card = &mt8173_max98090_card;
148 struct device_node *codec_node, *platform_node;
149 struct snd_soc_dai_link *dai_link;
150 int ret, i;
151
152 platform_node = of_parse_phandle(pdev->dev.of_node,
153 "mediatek,platform", 0);
154 if (!platform_node) {
155 dev_err(&pdev->dev, "Property 'platform' missing or invalid\n");
156 return -EINVAL;
157 }
158 for_each_card_prelinks(card, i, dai_link) {
159 if (dai_link->platforms->name)
160 continue;
161 dai_link->platforms->of_node = platform_node;
162 }
163
164 codec_node = of_parse_phandle(pdev->dev.of_node,
165 "mediatek,audio-codec", 0);
166 if (!codec_node) {
167 dev_err(&pdev->dev,
168 "Property 'audio-codec' missing or invalid\n");
169 ret = -EINVAL;
170 goto put_platform_node;
171 }
172 for_each_card_prelinks(card, i, dai_link) {
173 if (dai_link->codecs->name)
174 continue;
175 dai_link->codecs->of_node = codec_node;
176 }
177 card->dev = &pdev->dev;
178
179 ret = devm_snd_soc_register_card(&pdev->dev, card);
180
181 of_node_put(codec_node);
182
183 put_platform_node:
184 of_node_put(platform_node);
185 return ret;
186 }
187
188 static const struct of_device_id mt8173_max98090_dt_match[] = {
189 { .compatible = "mediatek,mt8173-max98090", },
190 { }
191 };
192 MODULE_DEVICE_TABLE(of, mt8173_max98090_dt_match);
193
194 static struct platform_driver mt8173_max98090_driver = {
195 .driver = {
196 .name = "mt8173-max98090",
197 .of_match_table = mt8173_max98090_dt_match,
198 .pm = &snd_soc_pm_ops,
199 },
200 .probe = mt8173_max98090_dev_probe,
201 };
202
203 module_platform_driver(mt8173_max98090_driver);
204
205 /* Module information */
206 MODULE_DESCRIPTION("MT8173 MAX98090 ALSA SoC machine driver");
207 MODULE_AUTHOR("Koro Chen <koro.chen@mediatek.com>");
208 MODULE_LICENSE("GPL v2");
209 MODULE_ALIAS("platform:mt8173-max98090");
210
211