1 // SPDX-License-Identifier: GPL-2.0
2 /*
3 * mt2701-wm8960.c -- MT2701 WM8960 ALSA SoC machine driver
4 *
5 * Copyright (c) 2017 MediaTek Inc.
6 * Author: Ryder Lee <ryder.lee@mediatek.com>
7 */
8
9 #include <linux/module.h>
10 #include <sound/soc.h>
11
12 #include "mt2701-afe-common.h"
13
14 static const struct snd_soc_dapm_widget mt2701_wm8960_widgets[] = {
15 SND_SOC_DAPM_HP("Headphone", NULL),
16 SND_SOC_DAPM_MIC("AMIC", NULL),
17 };
18
19 static const struct snd_kcontrol_new mt2701_wm8960_controls[] = {
20 SOC_DAPM_PIN_SWITCH("Headphone"),
21 SOC_DAPM_PIN_SWITCH("AMIC"),
22 };
23
24 static int mt2701_wm8960_be_ops_hw_params(struct snd_pcm_substream *substream,
25 struct snd_pcm_hw_params *params)
26 {
27 struct snd_soc_pcm_runtime *rtd = snd_soc_substream_to_rtd(substream);
28 struct snd_soc_dai *codec_dai = snd_soc_rtd_to_codec(rtd, 0);
29 struct snd_soc_dai *cpu_dai = snd_soc_rtd_to_cpu(rtd, 0);
30 unsigned int mclk_rate;
31 unsigned int rate = params_rate(params);
32 unsigned int div_mclk_over_bck = rate > 192000 ? 2 : 4;
33 unsigned int div_bck_over_lrck = 64;
34
35 mclk_rate = rate * div_bck_over_lrck * div_mclk_over_bck;
36
37 snd_soc_dai_set_sysclk(cpu_dai, 0, mclk_rate, SND_SOC_CLOCK_OUT);
38 snd_soc_dai_set_sysclk(codec_dai, 0, mclk_rate, SND_SOC_CLOCK_IN);
39
40 return 0;
41 }
42
43 static const struct snd_soc_ops mt2701_wm8960_be_ops = {
44 .hw_params = mt2701_wm8960_be_ops_hw_params
45 };
46
47 SND_SOC_DAILINK_DEFS(playback,
48 DAILINK_COMP_ARRAY(COMP_CPU("PCMO0")),
49 DAILINK_COMP_ARRAY(COMP_DUMMY()),
50 DAILINK_COMP_ARRAY(COMP_EMPTY()));
51
52 SND_SOC_DAILINK_DEFS(capture,
53 DAILINK_COMP_ARRAY(COMP_CPU("PCM0")),
54 DAILINK_COMP_ARRAY(COMP_DUMMY()),
55 DAILINK_COMP_ARRAY(COMP_EMPTY()));
56
57 SND_SOC_DAILINK_DEFS(codec,
58 DAILINK_COMP_ARRAY(COMP_CPU("I2S0")),
59 DAILINK_COMP_ARRAY(COMP_CODEC(NULL, "wm8960-hifi")),
60 DAILINK_COMP_ARRAY(COMP_EMPTY()));
61
62 static struct snd_soc_dai_link mt2701_wm8960_dai_links[] = {
63 /* FE */
64 {
65 .name = "wm8960-playback",
66 .stream_name = "wm8960-playback",
67 .trigger = {SND_SOC_DPCM_TRIGGER_POST,
68 SND_SOC_DPCM_TRIGGER_POST},
69 .dynamic = 1,
70 .dpcm_playback = 1,
71 SND_SOC_DAILINK_REG(playback),
72 },
73 {
74 .name = "wm8960-capture",
75 .stream_name = "wm8960-capture",
76 .trigger = {SND_SOC_DPCM_TRIGGER_POST,
77 SND_SOC_DPCM_TRIGGER_POST},
78 .dynamic = 1,
79 .dpcm_capture = 1,
80 SND_SOC_DAILINK_REG(capture),
81 },
82 /* BE */
83 {
84 .name = "wm8960-codec",
85 .no_pcm = 1,
86 .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_CBS_CFS
87 | SND_SOC_DAIFMT_GATED,
88 .ops = &mt2701_wm8960_be_ops,
89 .dpcm_playback = 1,
90 .dpcm_capture = 1,
91 SND_SOC_DAILINK_REG(codec),
92 },
93 };
94
95 static struct snd_soc_card mt2701_wm8960_card = {
96 .name = "mt2701-wm8960",
97 .owner = THIS_MODULE,
98 .dai_link = mt2701_wm8960_dai_links,
99 .num_links = ARRAY_SIZE(mt2701_wm8960_dai_links),
100 .controls = mt2701_wm8960_controls,
101 .num_controls = ARRAY_SIZE(mt2701_wm8960_controls),
102 .dapm_widgets = mt2701_wm8960_widgets,
103 .num_dapm_widgets = ARRAY_SIZE(mt2701_wm8960_widgets),
104 };
105
106 static int mt2701_wm8960_machine_probe(struct platform_device *pdev)
107 {
108 struct snd_soc_card *card = &mt2701_wm8960_card;
109 struct device_node *platform_node, *codec_node;
110 struct snd_soc_dai_link *dai_link;
111 int ret, i;
112
113 platform_node = of_parse_phandle(pdev->dev.of_node,
114 "mediatek,platform", 0);
115 if (!platform_node) {
116 dev_err(&pdev->dev, "Property 'platform' missing or invalid\n");
117 return -EINVAL;
118 }
119 for_each_card_prelinks(card, i, dai_link) {
120 if (dai_link->platforms->name)
121 continue;
122 dai_link->platforms->of_node = platform_node;
123 }
124
125 card->dev = &pdev->dev;
126
127 codec_node = of_parse_phandle(pdev->dev.of_node,
128 "mediatek,audio-codec", 0);
129 if (!codec_node) {
130 dev_err(&pdev->dev,
131 "Property 'audio-codec' missing or invalid\n");
132 ret = -EINVAL;
133 goto put_platform_node;
134 }
135 for_each_card_prelinks(card, i, dai_link) {
136 if (dai_link->codecs->name)
137 continue;
138 dai_link->codecs->of_node = codec_node;
139 }
140
141 ret = snd_soc_of_parse_audio_routing(card, "audio-routing");
142 if (ret) {
143 dev_err(&pdev->dev, "failed to parse audio-routing: %d\n", ret);
144 goto put_codec_node;
145 }
146
147 ret = devm_snd_soc_register_card(&pdev->dev, card);
148 if (ret)
149 dev_err(&pdev->dev, "%s snd_soc_register_card fail %d\n",
150 __func__, ret);
151
152 put_codec_node:
153 of_node_put(codec_node);
154 put_platform_node:
155 of_node_put(platform_node);
156 return ret;
157 }
158
159 #ifdef CONFIG_OF
160 static const struct of_device_id mt2701_wm8960_machine_dt_match[] = {
161 {.compatible = "mediatek,mt2701-wm8960-machine",},
162 {}
163 };
164 MODULE_DEVICE_TABLE(of, mt2701_wm8960_machine_dt_match);
165 #endif
166
167 static struct platform_driver mt2701_wm8960_machine = {
168 .driver = {
169 .name = "mt2701-wm8960",
170 #ifdef CONFIG_OF
171 .of_match_table = mt2701_wm8960_machine_dt_match,
172 #endif
173 },
174 .probe = mt2701_wm8960_machine_probe,
175 };
176
177 module_platform_driver(mt2701_wm8960_machine);
178
179 /* Module information */
180 MODULE_DESCRIPTION("MT2701 WM8960 ALSA SoC machine driver");
181 MODULE_AUTHOR("Ryder Lee <ryder.lee@mediatek.com>");
182 MODULE_LICENSE("GPL v2");
183 MODULE_ALIAS("mt2701 wm8960 soc card");
184
185
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