LXR linux/sound/soc/samsung/smdk

   1// SPDX-License-Identifier: GPL-2.0+
   2
   3#include "../codecs/wm8994.h"
   4#include <sound/pcm_params.h>
   5#include <sound/soc.h>
   6#include <linux/module.h>
   7#include <linux/of.h>
   8
   9 /*
  10  * Default CFG switch settings to use this driver:
  11  *     SMDKV310: CFG5-1000, CFG7-111111
  12  */
  13
  14 /*
  15  * Configure audio route as :-
  16  * $ amixer sset 'DAC1' on,on
  17  * $ amixer sset 'Right Headphone Mux' 'DAC'
  18  * $ amixer sset 'Left Headphone Mux' 'DAC'
  19  * $ amixer sset 'DAC1R Mixer AIF1.1' on
  20  * $ amixer sset 'DAC1L Mixer AIF1.1' on
  21  * $ amixer sset 'IN2L' on
  22  * $ amixer sset 'IN2L PGA IN2LN' on
  23  * $ amixer sset 'MIXINL IN2L' on
  24  * $ amixer sset 'AIF1ADC1L Mixer ADC/DMIC' on
  25  * $ amixer sset 'IN2R' on
  26  * $ amixer sset 'IN2R PGA IN2RN' on
  27  * $ amixer sset 'MIXINR IN2R' on
  28  * $ amixer sset 'AIF1ADC1R Mixer ADC/DMIC' on
  29  */
  30
  31/* SMDK has a 16.934MHZ crystal attached to WM8994 */
  32#define SMDK_WM8994_FREQ 16934000
  33
  34static int smdk_hw_params(struct snd_pcm_substream *substream,
  35        struct snd_pcm_hw_params *params)
  36{
  37        struct snd_soc_pcm_runtime *rtd = snd_soc_substream_to_rtd(substream);
  38        struct snd_soc_dai *codec_dai = snd_soc_rtd_to_codec(rtd, 0);
  39        unsigned int pll_out;
  40        int ret;
  41
  42        /* AIF1CLK should be >=3MHz for optimal performance */
  43        if (params_width(params) == 24)
  44                pll_out = params_rate(params) * 384;
  45        else if (params_rate(params) == 8000 || params_rate(params) == 11025)
  46                pll_out = params_rate(params) * 512;
  47        else
  48                pll_out = params_rate(params) * 256;
  49
  50        ret = snd_soc_dai_set_pll(codec_dai, WM8994_FLL1, WM8994_FLL_SRC_MCLK1,
  51                                        SMDK_WM8994_FREQ, pll_out);
  52        if (ret < 0)
  53                return ret;
  54
  55        ret = snd_soc_dai_set_sysclk(codec_dai, WM8994_SYSCLK_FLL1,
  56                                        pll_out, SND_SOC_CLOCK_IN);
  57        if (ret < 0)
  58                return ret;
  59
  60        return 0;
  61}
  62
  63/*
  64 * SMDK WM8994 DAI operations.
  65 */
  66static const struct snd_soc_ops smdk_ops = {
  67        .hw_params = smdk_hw_params,
  68};
  69
  70static int smdk_wm8994_init_paiftx(struct snd_soc_pcm_runtime *rtd)
  71{
  72        struct snd_soc_dapm_context *dapm = &rtd->card->dapm;
  73
  74        /* Other pins NC */
  75        snd_soc_dapm_nc_pin(dapm, "HPOUT2P");
  76        snd_soc_dapm_nc_pin(dapm, "HPOUT2N");
  77        snd_soc_dapm_nc_pin(dapm, "SPKOUTLN");
  78        snd_soc_dapm_nc_pin(dapm, "SPKOUTLP");
  79        snd_soc_dapm_nc_pin(dapm, "SPKOUTRP");
  80        snd_soc_dapm_nc_pin(dapm, "SPKOUTRN");
  81        snd_soc_dapm_nc_pin(dapm, "LINEOUT1N");
  82        snd_soc_dapm_nc_pin(dapm, "LINEOUT1P");
  83        snd_soc_dapm_nc_pin(dapm, "LINEOUT2N");
  84        snd_soc_dapm_nc_pin(dapm, "LINEOUT2P");
  85        snd_soc_dapm_nc_pin(dapm, "IN1LP");
  86        snd_soc_dapm_nc_pin(dapm, "IN2LP:VXRN");
  87        snd_soc_dapm_nc_pin(dapm, "IN1RP");
  88        snd_soc_dapm_nc_pin(dapm, "IN2RP:VXRP");
  89
  90        return 0;
  91}
  92
  93SND_SOC_DAILINK_DEFS(aif1,
  94        DAILINK_COMP_ARRAY(COMP_CPU("samsung-i2s.0")),
  95        DAILINK_COMP_ARRAY(COMP_CODEC("wm8994-codec", "wm8994-aif1")),
  96        DAILINK_COMP_ARRAY(COMP_PLATFORM("samsung-i2s.0")));
  97
  98SND_SOC_DAILINK_DEFS(fifo_tx,
  99        DAILINK_COMP_ARRAY(COMP_CPU("samsung-i2s-sec")),
 100        DAILINK_COMP_ARRAY(COMP_CODEC("wm8994-codec", "wm8994-aif1")),
 101        DAILINK_COMP_ARRAY(COMP_PLATFORM("samsung-i2s-sec")));
 102
 103static struct snd_soc_dai_link smdk_dai[] = {
 104        { /* Primary DAI i/f */
 105                .name = "WM8994 AIF1",
 106                .stream_name = "Pri_Dai",
 107                .init = smdk_wm8994_init_paiftx,
 108                .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
 109                        SND_SOC_DAIFMT_CBP_CFP,
 110                .ops = &smdk_ops,
 111                SND_SOC_DAILINK_REG(aif1),
 112        }, { /* Sec_Fifo Playback i/f */
 113                .name = "Sec_FIFO TX",
 114                .stream_name = "Sec_Dai",
 115                .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
 116                        SND_SOC_DAIFMT_CBP_CFP,
 117                .ops = &smdk_ops,
 118                SND_SOC_DAILINK_REG(fifo_tx),
 119        },
 120};
 121
 122static struct snd_soc_card smdk = {
 123        .name = "SMDK-I2S",
 124        .owner = THIS_MODULE,
 125        .dai_link = smdk_dai,
 126        .num_links = ARRAY_SIZE(smdk_dai),
 127};
 128
 129static const struct of_device_id samsung_wm8994_of_match[] = {
 130        { .compatible = "samsung,smdk-wm8994" },
 131        {},
 132};
 133MODULE_DEVICE_TABLE(of, samsung_wm8994_of_match);
 134
 135static int smdk_audio_probe(struct platform_device *pdev)
 136{
 137        int ret;
 138        struct device_node *np = pdev->dev.of_node;
 139        struct snd_soc_card *card = &smdk;
 140
 141        card->dev = &pdev->dev;
 142
 143        if (np) {
 144                smdk_dai[0].cpus->dai_name = NULL;
 145                smdk_dai[0].cpus->of_node = of_parse_phandle(np,
 146                                "samsung,i2s-controller", 0);
 147                if (!smdk_dai[0].cpus->of_node) {
 148                        dev_err(&pdev->dev,
 149                           "Property 'samsung,i2s-controller' missing or invalid\n");
 150                        ret = -EINVAL;
 151                        return ret;
 152                }
 153
 154                smdk_dai[0].platforms->name = NULL;
 155                smdk_dai[0].platforms->of_node = smdk_dai[0].cpus->of_node;
 156        }
 157
 158        ret = devm_snd_soc_register_card(&pdev->dev, card);
 159
 160        if (ret)
 161                dev_err_probe(&pdev->dev, ret, "snd_soc_register_card() failed\n");
 162
 163        return ret;
 164}
 165
 166static struct platform_driver smdk_audio_driver = {
 167        .driver         = {
 168                .name   = "smdk-audio-wm8994",
 169                .of_match_table = samsung_wm8994_of_match,
 170                .pm     = &snd_soc_pm_ops,
 171        },
 172        .probe          = smdk_audio_probe,
 173};
 174
 175module_platform_driver(smdk_audio_driver);
 176
 177MODULE_DESCRIPTION("ALSA SoC SMDK WM8994");
 178MODULE_LICENSE("GPL");
 179MODULE_ALIAS("platform:smdk-audio-wm8994");
 180