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