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Linux/sound/soc/blackfin/bfin-eval-adav80x.c

  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 
 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 *codec_dai = rtd->codec_dai;
 38         int ret;
 39 
 40         ret = snd_soc_dai_set_pll(codec_dai, ADAV80X_PLL1, ADAV80X_PLL_SRC_XTAL,
 41                         27000000, params_rate(params) * 256);
 42         if (ret)
 43                 return ret;
 44 
 45         ret = snd_soc_dai_set_sysclk(codec_dai, ADAV80X_CLK_PLL1,
 46                         params_rate(params) * 256, SND_SOC_CLOCK_IN);
 47 
 48         return ret;
 49 }
 50 
 51 static int bfin_eval_adav80x_codec_init(struct snd_soc_pcm_runtime *rtd)
 52 {
 53         struct snd_soc_dai *codec_dai = rtd->codec_dai;
 54 
 55         snd_soc_dai_set_sysclk(codec_dai, ADAV80X_CLK_SYSCLK1, 0,
 56             SND_SOC_CLOCK_OUT);
 57         snd_soc_dai_set_sysclk(codec_dai, ADAV80X_CLK_SYSCLK2, 0,
 58             SND_SOC_CLOCK_OUT);
 59         snd_soc_dai_set_sysclk(codec_dai, ADAV80X_CLK_SYSCLK3, 0,
 60             SND_SOC_CLOCK_OUT);
 61 
 62         snd_soc_dai_set_sysclk(codec_dai, ADAV80X_CLK_XTAL, 2700000, 0);
 63 
 64         return 0;
 65 }
 66 
 67 static struct snd_soc_ops bfin_eval_adav80x_ops = {
 68         .hw_params = bfin_eval_adav80x_hw_params,
 69 };
 70 
 71 static struct snd_soc_dai_link bfin_eval_adav80x_dais[] = {
 72         {
 73                 .name = "adav80x",
 74                 .stream_name = "ADAV80x HiFi",
 75                 .cpu_dai_name = "bfin-i2s.0",
 76                 .codec_dai_name = "adav80x-hifi",
 77                 .platform_name = "bfin-i2s-pcm-audio",
 78                 .init = bfin_eval_adav80x_codec_init,
 79                 .ops = &bfin_eval_adav80x_ops,
 80                 .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
 81                                 SND_SOC_DAIFMT_CBM_CFM,
 82         },
 83 };
 84 
 85 static struct snd_soc_card bfin_eval_adav80x = {
 86         .name = "bfin-eval-adav80x",
 87         .owner = THIS_MODULE,
 88         .dai_link = bfin_eval_adav80x_dais,
 89         .num_links = ARRAY_SIZE(bfin_eval_adav80x_dais),
 90 
 91         .dapm_widgets           = bfin_eval_adav80x_dapm_widgets,
 92         .num_dapm_widgets       = ARRAY_SIZE(bfin_eval_adav80x_dapm_widgets),
 93         .dapm_routes            = bfin_eval_adav80x_dapm_routes,
 94         .num_dapm_routes        = ARRAY_SIZE(bfin_eval_adav80x_dapm_routes),
 95 };
 96 
 97 enum bfin_eval_adav80x_type {
 98         BFIN_EVAL_ADAV801,
 99         BFIN_EVAL_ADAV803,
100 };
101 
102 static int bfin_eval_adav80x_probe(struct platform_device *pdev)
103 {
104         struct snd_soc_card *card = &bfin_eval_adav80x;
105         const char *codec_name;
106 
107         switch (platform_get_device_id(pdev)->driver_data) {
108         case BFIN_EVAL_ADAV801:
109                 codec_name = "spi0.1";
110                 break;
111         case BFIN_EVAL_ADAV803:
112                 codec_name = "adav803.0-0034";
113                 break;
114         default:
115                 return -EINVAL;
116         }
117 
118         bfin_eval_adav80x_dais[0].codec_name = codec_name;
119 
120         card->dev = &pdev->dev;
121 
122         return snd_soc_register_card(&bfin_eval_adav80x);
123 }
124 
125 static int bfin_eval_adav80x_remove(struct platform_device *pdev)
126 {
127         struct snd_soc_card *card = platform_get_drvdata(pdev);
128 
129         snd_soc_unregister_card(card);
130 
131         return 0;
132 }
133 
134 static const struct platform_device_id bfin_eval_adav80x_ids[] = {
135         { "bfin-eval-adav801", BFIN_EVAL_ADAV801 },
136         { "bfin-eval-adav803", BFIN_EVAL_ADAV803 },
137         { },
138 };
139 MODULE_DEVICE_TABLE(platform, bfin_eval_adav80x_ids);
140 
141 static struct platform_driver bfin_eval_adav80x_driver = {
142         .driver = {
143                 .name = "bfin-eval-adav80x",
144                 .owner = THIS_MODULE,
145                 .pm = &snd_soc_pm_ops,
146         },
147         .probe = bfin_eval_adav80x_probe,
148         .remove = bfin_eval_adav80x_remove,
149         .id_table = bfin_eval_adav80x_ids,
150 };
151 
152 module_platform_driver(bfin_eval_adav80x_driver);
153 
154 MODULE_AUTHOR("Lars-Peter Clausen <lars@metafoo.de>");
155 MODULE_DESCRIPTION("ALSA SoC bfin adav80x driver");
156 MODULE_LICENSE("GPL");
157 

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