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Linux/sound/soc/blackfin/bfin-eval-adau1373.c

  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 
 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 *codec_dai = rtd->codec_dai;
 71         int ret;
 72         int pll_rate;
 73 
 74         switch (params_rate(params)) {
 75         case 48000:
 76         case 8000:
 77         case 12000:
 78         case 16000:
 79         case 24000:
 80         case 32000:
 81                 pll_rate = 48000 * 1024;
 82                 break;
 83         case 44100:
 84         case 7350:
 85         case 11025:
 86         case 14700:
 87         case 22050:
 88         case 29400:
 89                 pll_rate = 44100 * 1024;
 90                 break;
 91         default:
 92                 return -EINVAL;
 93         }
 94 
 95         ret = snd_soc_dai_set_pll(codec_dai, ADAU1373_PLL1,
 96                         ADAU1373_PLL_SRC_MCLK1, 12288000, pll_rate);
 97         if (ret)
 98                 return ret;
 99 
100         ret = snd_soc_dai_set_sysclk(codec_dai, ADAU1373_CLK_SRC_PLL1, pll_rate,
101                         SND_SOC_CLOCK_IN);
102 
103         return ret;
104 }
105 
106 static int bfin_eval_adau1373_codec_init(struct snd_soc_pcm_runtime *rtd)
107 {
108         struct snd_soc_dai *codec_dai = rtd->codec_dai;
109         unsigned int pll_rate = 48000 * 1024;
110         int ret;
111 
112         ret = snd_soc_dai_set_pll(codec_dai, ADAU1373_PLL1,
113                         ADAU1373_PLL_SRC_MCLK1, 12288000, pll_rate);
114         if (ret)
115                 return ret;
116 
117         ret = snd_soc_dai_set_sysclk(codec_dai, ADAU1373_CLK_SRC_PLL1, pll_rate,
118                         SND_SOC_CLOCK_IN);
119 
120         return ret;
121 }
122 static struct snd_soc_ops bfin_eval_adau1373_ops = {
123         .hw_params = bfin_eval_adau1373_hw_params,
124 };
125 
126 static struct snd_soc_dai_link bfin_eval_adau1373_dai = {
127         .name = "adau1373",
128         .stream_name = "adau1373",
129         .cpu_dai_name = "bfin-i2s.0",
130         .codec_dai_name = "adau1373-aif1",
131         .platform_name = "bfin-i2s-pcm-audio",
132         .codec_name = "adau1373.0-001a",
133         .ops = &bfin_eval_adau1373_ops,
134         .init = bfin_eval_adau1373_codec_init,
135         .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
136                         SND_SOC_DAIFMT_CBM_CFM,
137 };
138 
139 static struct snd_soc_card bfin_eval_adau1373 = {
140         .name = "bfin-eval-adau1373",
141         .owner = THIS_MODULE,
142         .dai_link = &bfin_eval_adau1373_dai,
143         .num_links = 1,
144 
145         .dapm_widgets           = bfin_eval_adau1373_dapm_widgets,
146         .num_dapm_widgets       = ARRAY_SIZE(bfin_eval_adau1373_dapm_widgets),
147         .dapm_routes            = bfin_eval_adau1373_dapm_routes,
148         .num_dapm_routes        = ARRAY_SIZE(bfin_eval_adau1373_dapm_routes),
149 };
150 
151 static int bfin_eval_adau1373_probe(struct platform_device *pdev)
152 {
153         struct snd_soc_card *card = &bfin_eval_adau1373;
154 
155         card->dev = &pdev->dev;
156 
157         return snd_soc_register_card(&bfin_eval_adau1373);
158 }
159 
160 static int bfin_eval_adau1373_remove(struct platform_device *pdev)
161 {
162         struct snd_soc_card *card = platform_get_drvdata(pdev);
163 
164         snd_soc_unregister_card(card);
165 
166         return 0;
167 }
168 
169 static struct platform_driver bfin_eval_adau1373_driver = {
170         .driver = {
171                 .name = "bfin-eval-adau1373",
172                 .owner = THIS_MODULE,
173                 .pm = &snd_soc_pm_ops,
174         },
175         .probe = bfin_eval_adau1373_probe,
176         .remove = bfin_eval_adau1373_remove,
177 };
178 
179 module_platform_driver(bfin_eval_adau1373_driver);
180 
181 MODULE_AUTHOR("Lars-Peter Clausen <lars@metafoo.de>");
182 MODULE_DESCRIPTION("ALSA SoC bfin adau1373 driver");
183 MODULE_LICENSE("GPL");
184 MODULE_ALIAS("platform:bfin-eval-adau1373");
185 

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