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9#include <linux/module.h>
10#include <sound/soc.h>
11
12#include "mt2701-afe-common.h"
13
14static 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
19static const struct snd_kcontrol_new mt2701_wm8960_controls[] = {
20 SOC_DAPM_PIN_SWITCH("Headphone"),
21 SOC_DAPM_PIN_SWITCH("AMIC"),
22};
23
24static 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
43static struct snd_soc_ops mt2701_wm8960_be_ops = {
44 .hw_params = mt2701_wm8960_be_ops_hw_params
45};
46
47static struct snd_soc_dai_link mt2701_wm8960_dai_links[] = {
48
49 {
50 .name = "wm8960-playback",
51 .stream_name = "wm8960-playback",
52 .cpu_dai_name = "PCMO0",
53 .codec_name = "snd-soc-dummy",
54 .codec_dai_name = "snd-soc-dummy-dai",
55 .trigger = {SND_SOC_DPCM_TRIGGER_POST,
56 SND_SOC_DPCM_TRIGGER_POST},
57 .dynamic = 1,
58 .dpcm_playback = 1,
59 },
60 {
61 .name = "wm8960-capture",
62 .stream_name = "wm8960-capture",
63 .cpu_dai_name = "PCM0",
64 .codec_name = "snd-soc-dummy",
65 .codec_dai_name = "snd-soc-dummy-dai",
66 .trigger = {SND_SOC_DPCM_TRIGGER_POST,
67 SND_SOC_DPCM_TRIGGER_POST},
68 .dynamic = 1,
69 .dpcm_capture = 1,
70 },
71
72 {
73 .name = "wm8960-codec",
74 .cpu_dai_name = "I2S0",
75 .no_pcm = 1,
76 .codec_dai_name = "wm8960-hifi",
77 .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_CBS_CFS
78 | SND_SOC_DAIFMT_GATED,
79 .ops = &mt2701_wm8960_be_ops,
80 .dpcm_playback = 1,
81 .dpcm_capture = 1,
82 },
83};
84
85static struct snd_soc_card mt2701_wm8960_card = {
86 .name = "mt2701-wm8960",
87 .owner = THIS_MODULE,
88 .dai_link = mt2701_wm8960_dai_links,
89 .num_links = ARRAY_SIZE(mt2701_wm8960_dai_links),
90 .controls = mt2701_wm8960_controls,
91 .num_controls = ARRAY_SIZE(mt2701_wm8960_controls),
92 .dapm_widgets = mt2701_wm8960_widgets,
93 .num_dapm_widgets = ARRAY_SIZE(mt2701_wm8960_widgets),
94};
95
96static int mt2701_wm8960_machine_probe(struct platform_device *pdev)
97{
98 struct snd_soc_card *card = &mt2701_wm8960_card;
99 struct device_node *platform_node, *codec_node;
100 struct snd_soc_dai_link *dai_link;
101 int ret, i;
102
103 platform_node = of_parse_phandle(pdev->dev.of_node,
104 "mediatek,platform", 0);
105 if (!platform_node) {
106 dev_err(&pdev->dev, "Property 'platform' missing or invalid\n");
107 return -EINVAL;
108 }
109 for_each_card_prelinks(card, i, dai_link) {
110 if (dai_link->platform_name)
111 continue;
112 dai_link->platform_of_node = platform_node;
113 }
114
115 card->dev = &pdev->dev;
116
117 codec_node = of_parse_phandle(pdev->dev.of_node,
118 "mediatek,audio-codec", 0);
119 if (!codec_node) {
120 dev_err(&pdev->dev,
121 "Property 'audio-codec' missing or invalid\n");
122 return -EINVAL;
123 }
124 for_each_card_prelinks(card, i, dai_link) {
125 if (dai_link->codec_name)
126 continue;
127 dai_link->codec_of_node = codec_node;
128 }
129
130 ret = snd_soc_of_parse_audio_routing(card, "audio-routing");
131 if (ret) {
132 dev_err(&pdev->dev, "failed to parse audio-routing: %d\n", ret);
133 return ret;
134 }
135
136 ret = devm_snd_soc_register_card(&pdev->dev, card);
137 if (ret)
138 dev_err(&pdev->dev, "%s snd_soc_register_card fail %d\n",
139 __func__, ret);
140
141 return ret;
142}
143
144#ifdef CONFIG_OF
145static const struct of_device_id mt2701_wm8960_machine_dt_match[] = {
146 {.compatible = "mediatek,mt2701-wm8960-machine",},
147 {}
148};
149#endif
150
151static struct platform_driver mt2701_wm8960_machine = {
152 .driver = {
153 .name = "mt2701-wm8960",
154#ifdef CONFIG_OF
155 .of_match_table = mt2701_wm8960_machine_dt_match,
156#endif
157 },
158 .probe = mt2701_wm8960_machine_probe,
159};
160
161module_platform_driver(mt2701_wm8960_machine);
162
163
164MODULE_DESCRIPTION("MT2701 WM8960 ALSA SoC machine driver");
165MODULE_AUTHOR("Ryder Lee <ryder.lee@mediatek.com>");
166MODULE_LICENSE("GPL v2");
167MODULE_ALIAS("mt2701 wm8960 soc card");
168
169
