1 /*
2 * Machine driver for EVAL-ADAV801 and EVAL-ADAV803 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/init.h>
12 #include <linux/platform_device.h>
13 #include <linux/module.h>
14 #include <sound/core.h>
15 #include <sound/pcm.h>
16 #include <sound/soc.h>
17
18 #include "../codecs/adav80x.h"
19
20 static const struct snd_soc_dapm_widget bfin_eval_adav80x_dapm_widgets[] = {
21 SND_SOC_DAPM_LINE("Line Out", NULL),
22 SND_SOC_DAPM_LINE("Line In", NULL),
23 };
24
25 static const struct snd_soc_dapm_route bfin_eval_adav80x_dapm_routes[] = {
26 { "Line Out", NULL, "VOUTL" },
27 { "Line Out", NULL, "VOUTR" },
28
29 { "VINL", NULL, "Line In" },
30 { "VINR", NULL, "Line In" },
31 };
32
bfin_eval_adav80x_hw_params(struct snd_pcm_substream * substream,struct snd_pcm_hw_params * params)33 static int bfin_eval_adav80x_hw_params(struct snd_pcm_substream *substream,
34 struct snd_pcm_hw_params *params)
35 {
36 struct snd_soc_pcm_runtime *rtd = substream->private_data;
37 struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
38 struct snd_soc_dai *codec_dai = rtd->codec_dai;
39 int ret;
40
41 ret = snd_soc_dai_set_fmt(cpu_dai, SND_SOC_DAIFMT_I2S |
42 SND_SOC_DAIFMT_NB_NF | SND_SOC_DAIFMT_CBM_CFM);
43 if (ret)
44 return ret;
45
46 ret = snd_soc_dai_set_fmt(codec_dai, SND_SOC_DAIFMT_I2S |
47 SND_SOC_DAIFMT_NB_NF | SND_SOC_DAIFMT_CBM_CFM);
48 if (ret)
49 return ret;
50
51 ret = snd_soc_dai_set_pll(codec_dai, ADAV80X_PLL1, ADAV80X_PLL_SRC_XTAL,
52 27000000, params_rate(params) * 256);
53 if (ret)
54 return ret;
55
56 ret = snd_soc_dai_set_sysclk(codec_dai, ADAV80X_CLK_PLL1,
57 params_rate(params) * 256, SND_SOC_CLOCK_IN);
58
59 return ret;
60 }
61
bfin_eval_adav80x_codec_init(struct snd_soc_pcm_runtime * rtd)62 static int bfin_eval_adav80x_codec_init(struct snd_soc_pcm_runtime *rtd)
63 {
64 struct snd_soc_dai *codec_dai = rtd->codec_dai;
65
66 snd_soc_dai_set_sysclk(codec_dai, ADAV80X_CLK_SYSCLK1, 0,
67 SND_SOC_CLOCK_OUT);
68 snd_soc_dai_set_sysclk(codec_dai, ADAV80X_CLK_SYSCLK2, 0,
69 SND_SOC_CLOCK_OUT);
70 snd_soc_dai_set_sysclk(codec_dai, ADAV80X_CLK_SYSCLK3, 0,
71 SND_SOC_CLOCK_OUT);
72
73 snd_soc_dai_set_sysclk(codec_dai, ADAV80X_CLK_XTAL, 2700000, 0);
74
75 return 0;
76 }
77
78 static struct snd_soc_ops bfin_eval_adav80x_ops = {
79 .hw_params = bfin_eval_adav80x_hw_params,
80 };
81
82 static struct snd_soc_dai_link bfin_eval_adav80x_dais[] = {
83 {
84 .name = "adav80x",
85 .stream_name = "ADAV80x HiFi",
86 .cpu_dai_name = "bfin-i2s.0",
87 .codec_dai_name = "adav80x-hifi",
88 .platform_name = "bfin-i2s-pcm-audio",
89 .init = bfin_eval_adav80x_codec_init,
90 .ops = &bfin_eval_adav80x_ops,
91 },
92 };
93
94 static struct snd_soc_card bfin_eval_adav80x = {
95 .name = "bfin-eval-adav80x",
96 .owner = THIS_MODULE,
97 .dai_link = bfin_eval_adav80x_dais,
98 .num_links = ARRAY_SIZE(bfin_eval_adav80x_dais),
99
100 .dapm_widgets = bfin_eval_adav80x_dapm_widgets,
101 .num_dapm_widgets = ARRAY_SIZE(bfin_eval_adav80x_dapm_widgets),
102 .dapm_routes = bfin_eval_adav80x_dapm_routes,
103 .num_dapm_routes = ARRAY_SIZE(bfin_eval_adav80x_dapm_routes),
104 };
105
106 enum bfin_eval_adav80x_type {
107 BFIN_EVAL_ADAV801,
108 BFIN_EVAL_ADAV803,
109 };
110
bfin_eval_adav80x_probe(struct platform_device * pdev)111 static int bfin_eval_adav80x_probe(struct platform_device *pdev)
112 {
113 struct snd_soc_card *card = &bfin_eval_adav80x;
114 const char *codec_name;
115
116 switch (platform_get_device_id(pdev)->driver_data) {
117 case BFIN_EVAL_ADAV801:
118 codec_name = "spi0.1";
119 break;
120 case BFIN_EVAL_ADAV803:
121 codec_name = "adav803.0-0034";
122 break;
123 default:
124 return -EINVAL;
125 }
126
127 bfin_eval_adav80x_dais[0].codec_name = codec_name;
128
129 card->dev = &pdev->dev;
130
131 return snd_soc_register_card(&bfin_eval_adav80x);
132 }
133
bfin_eval_adav80x_remove(struct platform_device * pdev)134 static int __devexit bfin_eval_adav80x_remove(struct platform_device *pdev)
135 {
136 struct snd_soc_card *card = platform_get_drvdata(pdev);
137
138 snd_soc_unregister_card(card);
139
140 return 0;
141 }
142
143 static const struct platform_device_id bfin_eval_adav80x_ids[] = {
144 { "bfin-eval-adav801", BFIN_EVAL_ADAV801 },
145 { "bfin-eval-adav803", BFIN_EVAL_ADAV803 },
146 { },
147 };
148 MODULE_DEVICE_TABLE(platform, bfin_eval_adav80x_ids);
149
150 static struct platform_driver bfin_eval_adav80x_driver = {
151 .driver = {
152 .name = "bfin-eval-adav80x",
153 .owner = THIS_MODULE,
154 .pm = &snd_soc_pm_ops,
155 },
156 .probe = bfin_eval_adav80x_probe,
157 .remove = __devexit_p(bfin_eval_adav80x_remove),
158 .id_table = bfin_eval_adav80x_ids,
159 };
160
161 module_platform_driver(bfin_eval_adav80x_driver);
162
163 MODULE_AUTHOR("Lars-Peter Clausen <lars@metafoo.de>");
164 MODULE_DESCRIPTION("ALSA SoC bfin adav80x driver");
165 MODULE_LICENSE("GPL");
166