LXR 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
  20static 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
  25static 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
  33static 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
  51static 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
  67static struct snd_soc_ops bfin_eval_adav80x_ops = {
  68        .hw_params = bfin_eval_adav80x_hw_params,
  69};
  70
  71static 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
  85static 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
  97enum bfin_eval_adav80x_type {
  98        BFIN_EVAL_ADAV801,
  99        BFIN_EVAL_ADAV803,
 100};
 101
 102static 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
 125static 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
 134static 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};
 139MODULE_DEVICE_TABLE(platform, bfin_eval_adav80x_ids);
 140
 141static 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
 152module_platform_driver(bfin_eval_adav80x_driver);
 153
 154MODULE_AUTHOR("Lars-Peter Clausen <lars@metafoo.de>");
 155MODULE_DESCRIPTION("ALSA SoC bfin adav80x driver");
 156MODULE_LICENSE("GPL");
 157