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_HEADSET,
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