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#include <linux/of_device.h>
   9
  10 /*
  11  * Default CFG switch settings to use this driver:
  12  *     SMDKV310: CFG5-1000, CFG7-111111
  13  */
  14
  15 /*
  16  * Configure audio route as :-
  17  * $ amixer sset 'DAC1' on,on
  18  * $ amixer sset 'Right Headphone Mux' 'DAC'
  19  * $ amixer sset 'Left Headphone Mux' 'DAC'
  20  * $ amixer sset 'DAC1R Mixer AIF1.1' on
  21  * $ amixer sset 'DAC1L Mixer AIF1.1' on
  22  * $ amixer sset 'IN2L' on
  23  * $ amixer sset 'IN2L PGA IN2LN' on
  24  * $ amixer sset 'MIXINL IN2L' on
  25  * $ amixer sset 'AIF1ADC1L Mixer ADC/DMIC' on
  26  * $ amixer sset 'IN2R' on
  27  * $ amixer sset 'IN2R PGA IN2RN' on
  28  * $ amixer sset 'MIXINR IN2R' on
  29  * $ amixer sset 'AIF1ADC1R Mixer ADC/DMIC' on
  30  */
  31
  32/* SMDK has a 16.934MHZ crystal attached to WM8994 */
  33#define SMDK_WM8994_FREQ 16934000
  34
  35struct smdk_wm8994_data {
  36        int mclk1_rate;
  37};
  38
  39/* Default SMDKs */
  40static struct smdk_wm8994_data smdk_board_data = {
  41        .mclk1_rate = SMDK_WM8994_FREQ,
  42};
  43
  44static int smdk_hw_params(struct snd_pcm_substream *substream,
  45        struct snd_pcm_hw_params *params)
  46{
  47        struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream);
  48        struct snd_soc_dai *codec_dai = asoc_rtd_to_codec(rtd, 0);
  49        unsigned int pll_out;
  50        int ret;
  51
  52        /* AIF1CLK should be >=3MHz for optimal performance */
  53        if (params_width(params) == 24)
  54                pll_out = params_rate(params) * 384;
  55        else if (params_rate(params) == 8000 || params_rate(params) == 11025)
  56                pll_out = params_rate(params) * 512;
  57        else
  58                pll_out = params_rate(params) * 256;
  59
  60        ret = snd_soc_dai_set_pll(codec_dai, WM8994_FLL1, WM8994_FLL_SRC_MCLK1,
  61                                        SMDK_WM8994_FREQ, pll_out);
  62        if (ret < 0)
  63                return ret;
  64
  65        ret = snd_soc_dai_set_sysclk(codec_dai, WM8994_SYSCLK_FLL1,
  66                                        pll_out, SND_SOC_CLOCK_IN);
  67        if (ret < 0)
  68                return ret;
  69
  70        return 0;
  71}
  72
  73/*
  74 * SMDK WM8994 DAI operations.
  75 */
  76static const struct snd_soc_ops smdk_ops = {
  77        .hw_params = smdk_hw_params,
  78};
  79
  80static int smdk_wm8994_init_paiftx(struct snd_soc_pcm_runtime *rtd)
  81{
  82        struct snd_soc_dapm_context *dapm = &rtd->card->dapm;
  83
  84        /* Other pins NC */
  85        snd_soc_dapm_nc_pin(dapm, "HPOUT2P");
  86        snd_soc_dapm_nc_pin(dapm, "HPOUT2N");
  87        snd_soc_dapm_nc_pin(dapm, "SPKOUTLN");
  88        snd_soc_dapm_nc_pin(dapm, "SPKOUTLP");
  89        snd_soc_dapm_nc_pin(dapm, "SPKOUTRP");
  90        snd_soc_dapm_nc_pin(dapm, "SPKOUTRN");
  91        snd_soc_dapm_nc_pin(dapm, "LINEOUT1N");
  92        snd_soc_dapm_nc_pin(dapm, "LINEOUT1P");
  93        snd_soc_dapm_nc_pin(dapm, "LINEOUT2N");
  94        snd_soc_dapm_nc_pin(dapm, "LINEOUT2P");
  95        snd_soc_dapm_nc_pin(dapm, "IN1LP");
  96        snd_soc_dapm_nc_pin(dapm, "IN2LP:VXRN");
  97        snd_soc_dapm_nc_pin(dapm, "IN1RP");
  98        snd_soc_dapm_nc_pin(dapm, "IN2RP:VXRP");
  99
 100        return 0;
 101}
 102
 103SND_SOC_DAILINK_DEFS(aif1,
 104        DAILINK_COMP_ARRAY(COMP_CPU("samsung-i2s.0")),
 105        DAILINK_COMP_ARRAY(COMP_CODEC("wm8994-codec", "wm8994-aif1")),
 106        DAILINK_COMP_ARRAY(COMP_PLATFORM("samsung-i2s.0")));
 107
 108SND_SOC_DAILINK_DEFS(fifo_tx,
 109        DAILINK_COMP_ARRAY(COMP_CPU("samsung-i2s-sec")),
 110        DAILINK_COMP_ARRAY(COMP_CODEC("wm8994-codec", "wm8994-aif1")),
 111        DAILINK_COMP_ARRAY(COMP_PLATFORM("samsung-i2s-sec")));
 112
 113static struct snd_soc_dai_link smdk_dai[] = {
 114        { /* Primary DAI i/f */
 115                .name = "WM8994 AIF1",
 116                .stream_name = "Pri_Dai",
 117                .init = smdk_wm8994_init_paiftx,
 118                .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
 119                        SND_SOC_DAIFMT_CBM_CFM,
 120                .ops = &smdk_ops,
 121                SND_SOC_DAILINK_REG(aif1),
 122        }, { /* Sec_Fifo Playback i/f */
 123                .name = "Sec_FIFO TX",
 124                .stream_name = "Sec_Dai",
 125                .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
 126                        SND_SOC_DAIFMT_CBM_CFM,
 127                .ops = &smdk_ops,
 128                SND_SOC_DAILINK_REG(fifo_tx),
 129        },
 130};
 131
 132static struct snd_soc_card smdk = {
 133        .name = "SMDK-I2S",
 134        .owner = THIS_MODULE,
 135        .dai_link = smdk_dai,
 136        .num_links = ARRAY_SIZE(smdk_dai),
 137};
 138
 139static const struct of_device_id samsung_wm8994_of_match[] __maybe_unused = {
 140        { .compatible = "samsung,smdk-wm8994", .data = &smdk_board_data },
 141        {},
 142};
 143MODULE_DEVICE_TABLE(of, samsung_wm8994_of_match);
 144
 145static int smdk_audio_probe(struct platform_device *pdev)
 146{
 147        int ret;
 148        struct device_node *np = pdev->dev.of_node;
 149        struct snd_soc_card *card = &smdk;
 150        struct smdk_wm8994_data *board;
 151        const struct of_device_id *id;
 152
 153        card->dev = &pdev->dev;
 154
 155        board = devm_kzalloc(&pdev->dev, sizeof(*board), GFP_KERNEL);
 156        if (!board)
 157                return -ENOMEM;
 158
 159        if (np) {
 160                smdk_dai[0].cpus->dai_name = NULL;
 161                smdk_dai[0].cpus->of_node = of_parse_phandle(np,
 162                                "samsung,i2s-controller", 0);
 163                if (!smdk_dai[0].cpus->of_node) {
 164                        dev_err(&pdev->dev,
 165                           "Property 'samsung,i2s-controller' missing or invalid\n");
 166                        ret = -EINVAL;
 167                        return ret;
 168                }
 169
 170                smdk_dai[0].platforms->name = NULL;
 171                smdk_dai[0].platforms->of_node = smdk_dai[0].cpus->of_node;
 172        }
 173
 174        id = of_match_device(samsung_wm8994_of_match, &pdev->dev);
 175        if (id)
 176                *board = *((struct smdk_wm8994_data *)id->data);
 177
 178        platform_set_drvdata(pdev, board);
 179
 180        ret = devm_snd_soc_register_card(&pdev->dev, card);
 181
 182        if (ret && ret != -EPROBE_DEFER)
 183                dev_err(&pdev->dev, "snd_soc_register_card() failed:%d\n", ret);
 184
 185        return ret;
 186}
 187
 188static struct platform_driver smdk_audio_driver = {
 189        .driver         = {
 190                .name   = "smdk-audio-wm8994",
 191                .of_match_table = of_match_ptr(samsung_wm8994_of_match),
 192                .pm     = &snd_soc_pm_ops,
 193        },
 194        .probe          = smdk_audio_probe,
 195};
 196
 197module_platform_driver(smdk_audio_driver);
 198
 199MODULE_DESCRIPTION("ALSA SoC SMDK WM8994");
 200MODULE_LICENSE("GPL");
 201MODULE_ALIAS("platform:smdk-audio-wm8994");
 202