This source file includes following definitions.
- mt2701_wm8960_be_ops_hw_params
- mt2701_wm8960_machine_probe
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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 = substream->private_data;
28 struct snd_soc_dai *codec_dai = rtd->codec_dai;
29 struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
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 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
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
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 return -EINVAL;
133 }
134 for_each_card_prelinks(card, i, dai_link) {
135 if (dai_link->codecs->name)
136 continue;
137 dai_link->codecs->of_node = codec_node;
138 }
139
140 ret = snd_soc_of_parse_audio_routing(card, "audio-routing");
141 if (ret) {
142 dev_err(&pdev->dev, "failed to parse audio-routing: %d\n", ret);
143 return ret;
144 }
145
146 ret = devm_snd_soc_register_card(&pdev->dev, card);
147 if (ret)
148 dev_err(&pdev->dev, "%s snd_soc_register_card fail %d\n",
149 __func__, ret);
150
151 return ret;
152 }
153
154 #ifdef CONFIG_OF
155 static const struct of_device_id mt2701_wm8960_machine_dt_match[] = {
156 {.compatible = "mediatek,mt2701-wm8960-machine",},
157 {}
158 };
159 #endif
160
161 static struct platform_driver mt2701_wm8960_machine = {
162 .driver = {
163 .name = "mt2701-wm8960",
164 #ifdef CONFIG_OF
165 .of_match_table = mt2701_wm8960_machine_dt_match,
166 #endif
167 },
168 .probe = mt2701_wm8960_machine_probe,
169 };
170
171 module_platform_driver(mt2701_wm8960_machine);
172
173
174 MODULE_DESCRIPTION("MT2701 WM8960 ALSA SoC machine driver");
175 MODULE_AUTHOR("Ryder Lee <ryder.lee@mediatek.com>");
176 MODULE_LICENSE("GPL v2");
177 MODULE_ALIAS("mt2701 wm8960 soc card");
178