1 /*
2 * Machine driver for EVAL-ADAU1373 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/adau1373.h"
19
20 static const struct snd_soc_dapm_widget bfin_eval_adau1373_dapm_widgets[] = {
21 SND_SOC_DAPM_LINE("Line In1", NULL),
22 SND_SOC_DAPM_LINE("Line In2", NULL),
23 SND_SOC_DAPM_LINE("Line In3", NULL),
24 SND_SOC_DAPM_LINE("Line In4", NULL),
25
26 SND_SOC_DAPM_LINE("Line Out1", NULL),
27 SND_SOC_DAPM_LINE("Line Out2", NULL),
28 SND_SOC_DAPM_LINE("Stereo Out", NULL),
29 SND_SOC_DAPM_HP("Headphone", NULL),
30 SND_SOC_DAPM_HP("Earpiece", NULL),
31 SND_SOC_DAPM_SPK("Speaker", NULL),
32 };
33
34 static const struct snd_soc_dapm_route bfin_eval_adau1373_dapm_routes[] = {
35 { "AIN1L", NULL, "Line In1" },
36 { "AIN1R", NULL, "Line In1" },
37 { "AIN2L", NULL, "Line In2" },
38 { "AIN2R", NULL, "Line In2" },
39 { "AIN3L", NULL, "Line In3" },
40 { "AIN3R", NULL, "Line In3" },
41 { "AIN4L", NULL, "Line In4" },
42 { "AIN4R", NULL, "Line In4" },
43
44 /* MICBIAS can be connected via a jumper to the line-in jack, since w
45 don't know which one is going to be used, just power both. */
46 { "Line In1", NULL, "MICBIAS1" },
47 { "Line In2", NULL, "MICBIAS1" },
48 { "Line In3", NULL, "MICBIAS1" },
49 { "Line In4", NULL, "MICBIAS1" },
50 { "Line In1", NULL, "MICBIAS2" },
51 { "Line In2", NULL, "MICBIAS2" },
52 { "Line In3", NULL, "MICBIAS2" },
53 { "Line In4", NULL, "MICBIAS2" },
54
55 { "Line Out1", NULL, "LOUT1L" },
56 { "Line Out1", NULL, "LOUT1R" },
57 { "Line Out2", NULL, "LOUT2L" },
58 { "Line Out2", NULL, "LOUT2R" },
59 { "Headphone", NULL, "HPL" },
60 { "Headphone", NULL, "HPR" },
61 { "Earpiece", NULL, "EP" },
62 { "Speaker", NULL, "SPKL" },
63 { "Stereo Out", NULL, "SPKR" },
64 };
65
bfin_eval_adau1373_hw_params(struct snd_pcm_substream * substream,struct snd_pcm_hw_params * params)66 static int bfin_eval_adau1373_hw_params(struct snd_pcm_substream *substream,
67 struct snd_pcm_hw_params *params)
68 {
69 struct snd_soc_pcm_runtime *rtd = substream->private_data;
70 struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
71 struct snd_soc_dai *codec_dai = rtd->codec_dai;
72 int ret;
73 int pll_rate;
74
75 ret = snd_soc_dai_set_fmt(cpu_dai, SND_SOC_DAIFMT_I2S |
76 SND_SOC_DAIFMT_NB_NF | SND_SOC_DAIFMT_CBM_CFM);
77 if (ret)
78 return ret;
79
80 ret = snd_soc_dai_set_fmt(codec_dai, SND_SOC_DAIFMT_I2S |
81 SND_SOC_DAIFMT_NB_NF | SND_SOC_DAIFMT_CBM_CFM);
82 if (ret)
83 return ret;
84
85 switch (params_rate(params)) {
86 case 48000:
87 case 8000:
88 case 12000:
89 case 16000:
90 case 24000:
91 case 32000:
92 pll_rate = 48000 * 1024;
93 break;
94 case 44100:
95 case 7350:
96 case 11025:
97 case 14700:
98 case 22050:
99 case 29400:
100 pll_rate = 44100 * 1024;
101 break;
102 default:
103 return -EINVAL;
104 }
105
106 ret = snd_soc_dai_set_pll(codec_dai, ADAU1373_PLL1,
107 ADAU1373_PLL_SRC_MCLK1, 12288000, pll_rate);
108 if (ret)
109 return ret;
110
111 ret = snd_soc_dai_set_sysclk(codec_dai, ADAU1373_CLK_SRC_PLL1, pll_rate,
112 SND_SOC_CLOCK_IN);
113
114 return ret;
115 }
116
bfin_eval_adau1373_codec_init(struct snd_soc_pcm_runtime * rtd)117 static int bfin_eval_adau1373_codec_init(struct snd_soc_pcm_runtime *rtd)
118 {
119 struct snd_soc_dai *codec_dai = rtd->codec_dai;
120 unsigned int pll_rate = 48000 * 1024;
121 int ret;
122
123 ret = snd_soc_dai_set_pll(codec_dai, ADAU1373_PLL1,
124 ADAU1373_PLL_SRC_MCLK1, 12288000, pll_rate);
125 if (ret)
126 return ret;
127
128 ret = snd_soc_dai_set_sysclk(codec_dai, ADAU1373_CLK_SRC_PLL1, pll_rate,
129 SND_SOC_CLOCK_IN);
130
131 return ret;
132 }
133 static struct snd_soc_ops bfin_eval_adau1373_ops = {
134 .hw_params = bfin_eval_adau1373_hw_params,
135 };
136
137 static struct snd_soc_dai_link bfin_eval_adau1373_dai = {
138 .name = "adau1373",
139 .stream_name = "adau1373",
140 .cpu_dai_name = "bfin-i2s.0",
141 .codec_dai_name = "adau1373-aif1",
142 .platform_name = "bfin-i2s-pcm-audio",
143 .codec_name = "adau1373.0-001a",
144 .ops = &bfin_eval_adau1373_ops,
145 .init = bfin_eval_adau1373_codec_init,
146 };
147
148 static struct snd_soc_card bfin_eval_adau1373 = {
149 .name = "bfin-eval-adau1373",
150 .owner = THIS_MODULE,
151 .dai_link = &bfin_eval_adau1373_dai,
152 .num_links = 1,
153
154 .dapm_widgets = bfin_eval_adau1373_dapm_widgets,
155 .num_dapm_widgets = ARRAY_SIZE(bfin_eval_adau1373_dapm_widgets),
156 .dapm_routes = bfin_eval_adau1373_dapm_routes,
157 .num_dapm_routes = ARRAY_SIZE(bfin_eval_adau1373_dapm_routes),
158 };
159
bfin_eval_adau1373_probe(struct platform_device * pdev)160 static int bfin_eval_adau1373_probe(struct platform_device *pdev)
161 {
162 struct snd_soc_card *card = &bfin_eval_adau1373;
163
164 card->dev = &pdev->dev;
165
166 return snd_soc_register_card(&bfin_eval_adau1373);
167 }
168
bfin_eval_adau1373_remove(struct platform_device * pdev)169 static int __devexit bfin_eval_adau1373_remove(struct platform_device *pdev)
170 {
171 struct snd_soc_card *card = platform_get_drvdata(pdev);
172
173 snd_soc_unregister_card(card);
174
175 return 0;
176 }
177
178 static struct platform_driver bfin_eval_adau1373_driver = {
179 .driver = {
180 .name = "bfin-eval-adau1373",
181 .owner = THIS_MODULE,
182 .pm = &snd_soc_pm_ops,
183 },
184 .probe = bfin_eval_adau1373_probe,
185 .remove = __devexit_p(bfin_eval_adau1373_remove),
186 };
187
188 module_platform_driver(bfin_eval_adau1373_driver);
189
190 MODULE_AUTHOR("Lars-Peter Clausen <lars@metafoo.de>");
191 MODULE_DESCRIPTION("ALSA SoC bfin adau1373 driver");
192 MODULE_LICENSE("GPL");
193 MODULE_ALIAS("platform:bfin-eval-adau1373");
194