1 /*
2 * Machine driver for EVAL-ADAU1701MINIZ on Analog Devices bfin
3 * evaluation boards.
4 *
5 * Copyright 2011 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 <sound/core.h>
14 #include <sound/pcm.h>
15 #include <sound/soc.h>
16 #include <sound/pcm_params.h>
17
18 #include "../codecs/adau1701.h"
19
20 static const struct snd_soc_dapm_widget bfin_eval_adau1701_dapm_widgets[] = {
21 SND_SOC_DAPM_SPK("Speaker", NULL),
22 SND_SOC_DAPM_LINE("Line Out", NULL),
23 SND_SOC_DAPM_LINE("Line In", NULL),
24 };
25
26 static const struct snd_soc_dapm_route bfin_eval_adau1701_dapm_routes[] = {
27 { "Speaker", NULL, "OUT0" },
28 { "Speaker", NULL, "OUT1" },
29 { "Line Out", NULL, "OUT2" },
30 { "Line Out", NULL, "OUT3" },
31
32 { "IN0", NULL, "Line In" },
33 { "IN1", NULL, "Line In" },
34 };
35
bfin_eval_adau1701_hw_params(struct snd_pcm_substream * substream,struct snd_pcm_hw_params * params)36 static int bfin_eval_adau1701_hw_params(struct snd_pcm_substream *substream,
37 struct snd_pcm_hw_params *params)
38 {
39 struct snd_soc_pcm_runtime *rtd = substream->private_data;
40 struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
41 struct snd_soc_dai *codec_dai = rtd->codec_dai;
42 int ret;
43
44 ret = snd_soc_dai_set_fmt(cpu_dai, SND_SOC_DAIFMT_I2S |
45 SND_SOC_DAIFMT_NB_NF | SND_SOC_DAIFMT_CBM_CFM);
46 if (ret)
47 return ret;
48
49 ret = snd_soc_dai_set_fmt(codec_dai, SND_SOC_DAIFMT_I2S |
50 SND_SOC_DAIFMT_NB_NF | SND_SOC_DAIFMT_CBM_CFM);
51 if (ret)
52 return ret;
53
54 ret = snd_soc_dai_set_sysclk(codec_dai, ADAU1701_CLK_SRC_OSC, 12288000,
55 SND_SOC_CLOCK_IN);
56
57 return ret;
58 }
59
60 static struct snd_soc_ops bfin_eval_adau1701_ops = {
61 .hw_params = bfin_eval_adau1701_hw_params,
62 };
63
64 static struct snd_soc_dai_link bfin_eval_adau1701_dai[] = {
65 {
66 .name = "adau1701",
67 .stream_name = "adau1701",
68 .cpu_dai_name = "bfin-i2s.0",
69 .codec_dai_name = "adau1701",
70 .platform_name = "bfin-i2s-pcm-audio",
71 .codec_name = "adau1701.0-0034",
72 .ops = &bfin_eval_adau1701_ops,
73 },
74 {
75 .name = "adau1701",
76 .stream_name = "adau1701",
77 .cpu_dai_name = "bfin-i2s.1",
78 .codec_dai_name = "adau1701",
79 .platform_name = "bfin-i2s-pcm-audio",
80 .codec_name = "adau1701.0-0034",
81 .ops = &bfin_eval_adau1701_ops,
82 },
83 };
84
85 static struct snd_soc_card bfin_eval_adau1701 = {
86 .name = "bfin-eval-adau1701",
87 .owner = THIS_MODULE,
88 .dai_link = &bfin_eval_adau1701_dai[CONFIG_SND_BF5XX_SPORT_NUM],
89 .num_links = 1,
90
91 .dapm_widgets = bfin_eval_adau1701_dapm_widgets,
92 .num_dapm_widgets = ARRAY_SIZE(bfin_eval_adau1701_dapm_widgets),
93 .dapm_routes = bfin_eval_adau1701_dapm_routes,
94 .num_dapm_routes = ARRAY_SIZE(bfin_eval_adau1701_dapm_routes),
95 };
96
bfin_eval_adau1701_probe(struct platform_device * pdev)97 static int bfin_eval_adau1701_probe(struct platform_device *pdev)
98 {
99 struct snd_soc_card *card = &bfin_eval_adau1701;
100
101 card->dev = &pdev->dev;
102
103 return snd_soc_register_card(&bfin_eval_adau1701);
104 }
105
bfin_eval_adau1701_remove(struct platform_device * pdev)106 static int __devexit bfin_eval_adau1701_remove(struct platform_device *pdev)
107 {
108 struct snd_soc_card *card = platform_get_drvdata(pdev);
109
110 snd_soc_unregister_card(card);
111
112 return 0;
113 }
114
115 static struct platform_driver bfin_eval_adau1701_driver = {
116 .driver = {
117 .name = "bfin-eval-adau1701",
118 .owner = THIS_MODULE,
119 .pm = &snd_soc_pm_ops,
120 },
121 .probe = bfin_eval_adau1701_probe,
122 .remove = __devexit_p(bfin_eval_adau1701_remove),
123 };
124
125 module_platform_driver(bfin_eval_adau1701_driver);
126
127 MODULE_AUTHOR("Lars-Peter Clausen <lars@metafoo.de>");
128 MODULE_DESCRIPTION("ALSA SoC bfin ADAU1701 driver");
129 MODULE_LICENSE("GPL");
130 MODULE_ALIAS("platform:bfin-eval-adau1701");
131