1 /*
2 * Machine driver for EVAL-ADAU1x61MINIZ on Analog Devices bfin
3 * evaluation boards.
4 *
5 * Copyright 2011-2014 Analog Devices Inc.
6 * Author: Lars-Peter Clausen <lars@metafoo.de>
7 *
8 * Licensed under the GPL-2 or later.
9 */
10
11 #include <linux/module.h>
12 #include <linux/device.h>
13 #include <linux/slab.h>
14 #include <sound/core.h>
15 #include <sound/pcm.h>
16 #include <sound/soc.h>
17 #include <sound/pcm_params.h>
18
19 #include "../codecs/adau17x1.h"
20
21 static const struct snd_soc_dapm_widget bfin_eval_adau1x61_dapm_widgets[] = {
22 SND_SOC_DAPM_LINE("In 1", NULL),
23 SND_SOC_DAPM_LINE("In 2", NULL),
24 SND_SOC_DAPM_LINE("In 3-4", NULL),
25
26 SND_SOC_DAPM_LINE("Diff Out L", NULL),
27 SND_SOC_DAPM_LINE("Diff Out R", NULL),
28 SND_SOC_DAPM_LINE("Stereo Out", NULL),
29 SND_SOC_DAPM_HP("Capless HP Out", NULL),
30 };
31
32 static const struct snd_soc_dapm_route bfin_eval_adau1x61_dapm_routes[] = {
33 { "LAUX", NULL, "In 3-4" },
34 { "RAUX", NULL, "In 3-4" },
35 { "LINP", NULL, "In 1" },
36 { "LINN", NULL, "In 1"},
37 { "RINP", NULL, "In 2" },
38 { "RINN", NULL, "In 2" },
39
40 { "In 1", NULL, "MICBIAS" },
41 { "In 2", NULL, "MICBIAS" },
42
43 { "Capless HP Out", NULL, "LHP" },
44 { "Capless HP Out", NULL, "RHP" },
45 { "Diff Out L", NULL, "LOUT" },
46 { "Diff Out R", NULL, "ROUT" },
47 { "Stereo Out", NULL, "LOUT" },
48 { "Stereo Out", NULL, "ROUT" },
49 };
50
bfin_eval_adau1x61_hw_params(struct snd_pcm_substream * substream,struct snd_pcm_hw_params * params)51 static int bfin_eval_adau1x61_hw_params(struct snd_pcm_substream *substream,
52 struct snd_pcm_hw_params *params)
53 {
54 struct snd_soc_pcm_runtime *rtd = substream->private_data;
55 struct snd_soc_dai *codec_dai = rtd->codec_dai;
56 int pll_rate;
57 int ret;
58
59 switch (params_rate(params)) {
60 case 48000:
61 case 8000:
62 case 12000:
63 case 16000:
64 case 24000:
65 case 32000:
66 case 96000:
67 pll_rate = 48000 * 1024;
68 break;
69 case 44100:
70 case 7350:
71 case 11025:
72 case 14700:
73 case 22050:
74 case 29400:
75 case 88200:
76 pll_rate = 44100 * 1024;
77 break;
78 default:
79 return -EINVAL;
80 }
81
82 ret = snd_soc_dai_set_pll(codec_dai, ADAU17X1_PLL,
83 ADAU17X1_PLL_SRC_MCLK, 12288000, pll_rate);
84 if (ret)
85 return ret;
86
87 ret = snd_soc_dai_set_sysclk(codec_dai, ADAU17X1_CLK_SRC_PLL, pll_rate,
88 SND_SOC_CLOCK_IN);
89
90 return ret;
91 }
92
93 static const struct snd_soc_ops bfin_eval_adau1x61_ops = {
94 .hw_params = bfin_eval_adau1x61_hw_params,
95 };
96
97 static struct snd_soc_dai_link bfin_eval_adau1x61_dai = {
98 .name = "adau1x61",
99 .stream_name = "adau1x61",
100 .cpu_dai_name = "bfin-i2s.0",
101 .codec_dai_name = "adau-hifi",
102 .platform_name = "bfin-i2s-pcm-audio",
103 .codec_name = "adau1761.0-0038",
104 .ops = &bfin_eval_adau1x61_ops,
105 .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
106 SND_SOC_DAIFMT_CBM_CFM,
107 };
108
109 static struct snd_soc_card bfin_eval_adau1x61 = {
110 .name = "bfin-eval-adau1x61",
111 .owner = THIS_MODULE,
112 .driver_name = "eval-adau1x61",
113 .dai_link = &bfin_eval_adau1x61_dai,
114 .num_links = 1,
115
116 .dapm_widgets = bfin_eval_adau1x61_dapm_widgets,
117 .num_dapm_widgets = ARRAY_SIZE(bfin_eval_adau1x61_dapm_widgets),
118 .dapm_routes = bfin_eval_adau1x61_dapm_routes,
119 .num_dapm_routes = ARRAY_SIZE(bfin_eval_adau1x61_dapm_routes),
120 .fully_routed = true,
121 };
122
bfin_eval_adau1x61_probe(struct platform_device * pdev)123 static int bfin_eval_adau1x61_probe(struct platform_device *pdev)
124 {
125 bfin_eval_adau1x61.dev = &pdev->dev;
126
127 return devm_snd_soc_register_card(&pdev->dev, &bfin_eval_adau1x61);
128 }
129
130 static struct platform_driver bfin_eval_adau1x61_driver = {
131 .driver = {
132 .name = "bfin-eval-adau1x61",
133 .pm = &snd_soc_pm_ops,
134 },
135 .probe = bfin_eval_adau1x61_probe,
136 };
137 module_platform_driver(bfin_eval_adau1x61_driver);
138
139 MODULE_AUTHOR("Lars-Peter Clausen <lars@metafoo.de>");
140 MODULE_DESCRIPTION("ALSA SoC bfin adau1x61 driver");
141 MODULE_LICENSE("GPL");
142 MODULE_ALIAS("platform:bfin-eval-adau1x61");
143