sound/soc/qcom/sm8250.c

   1 // SPDX-License-Identifier: GPL-2.0
   2 // Copyright (c) 2020, Linaro Limited
   3
   4 #include <dt-bindings/sound/qcom,q6afe.h>
   5 #include <linux/module.h>
   6 #include <linux/platform_device.h>
   7 #include <sound/soc.h>
   8 #include <sound/soc-dapm.h>
   9 #include <sound/pcm.h>
  10 #include <linux/soundwire/sdw.h>
  11 #include <sound/jack.h>
  12 #include <linux/input-event-codes.h>
  13 #include "qdsp6/q6afe.h"
  14 #include "common.h"
  15 #include "sdw.h"
  16
  17 #define DRIVER_NAME             "sm8250"
  18 #define MI2S_BCLK_RATE          1536000
  19
  20 struct sm8250_snd_data {
  21         bool stream_prepared[AFE_PORT_MAX];
  22         struct snd_soc_card *card;
  23         struct sdw_stream_runtime *sruntime[AFE_PORT_MAX];
  24         struct snd_soc_jack jack;
  25         bool jack_setup;
  26 };
  27
  28 static int sm8250_snd_init(struct snd_soc_pcm_runtime *rtd)
  29 {
  30         struct sm8250_snd_data *data = snd_soc_card_get_drvdata(rtd->card);
  31
  32         return qcom_snd_wcd_jack_setup(rtd, &data->jack, &data->jack_setup);
  33 }
  34
  35 static int sm8250_be_hw_params_fixup(struct snd_soc_pcm_runtime *rtd,
  36                                      struct snd_pcm_hw_params *params)
  37 {
  38         struct snd_interval *rate = hw_param_interval(params,
  39                                         SNDRV_PCM_HW_PARAM_RATE);
  40         struct snd_interval *channels = hw_param_interval(params,
  41                                         SNDRV_PCM_HW_PARAM_CHANNELS);
  42
  43         rate->min = rate->max = 48000;
  44         channels->min = channels->max = 2;
  45
  46         return 0;
  47 }
  48
  49 static int sm8250_snd_startup(struct snd_pcm_substream *substream)
  50 {
  51         unsigned int fmt = SND_SOC_DAIFMT_BP_FP;
  52         unsigned int codec_dai_fmt = SND_SOC_DAIFMT_BC_FC;
  53         struct snd_soc_pcm_runtime *rtd = snd_soc_substream_to_rtd(substream);
  54         struct snd_soc_dai *cpu_dai = snd_soc_rtd_to_cpu(rtd, 0);
  55         struct snd_soc_dai *codec_dai = snd_soc_rtd_to_codec(rtd, 0);
  56
  57         switch (cpu_dai->id) {
  58         case PRIMARY_MI2S_RX:
  59                 codec_dai_fmt |= SND_SOC_DAIFMT_NB_NF | SND_SOC_DAIFMT_I2S;
  60                 snd_soc_dai_set_sysclk(cpu_dai,
  61                         Q6AFE_LPASS_CLK_ID_PRI_MI2S_IBIT,
  62                         MI2S_BCLK_RATE, SNDRV_PCM_STREAM_PLAYBACK);
  63                 snd_soc_dai_set_fmt(cpu_dai, fmt);
  64                 snd_soc_dai_set_fmt(codec_dai, codec_dai_fmt);
  65                 break;
  66         case SECONDARY_MI2S_RX:
  67                 codec_dai_fmt |= SND_SOC_DAIFMT_NB_NF | SND_SOC_DAIFMT_I2S;
  68                 snd_soc_dai_set_sysclk(cpu_dai,
  69                         Q6AFE_LPASS_CLK_ID_SEC_MI2S_IBIT,
  70                         MI2S_BCLK_RATE, SNDRV_PCM_STREAM_PLAYBACK);
  71                 snd_soc_dai_set_fmt(cpu_dai, fmt);
  72                 snd_soc_dai_set_fmt(codec_dai, codec_dai_fmt);
  73                 break;
  74         case TERTIARY_MI2S_RX:
  75                 codec_dai_fmt |= SND_SOC_DAIFMT_NB_NF | SND_SOC_DAIFMT_I2S;
  76                 snd_soc_dai_set_sysclk(cpu_dai,
  77                         Q6AFE_LPASS_CLK_ID_TER_MI2S_IBIT,
  78                         MI2S_BCLK_RATE, SNDRV_PCM_STREAM_PLAYBACK);
  79                 snd_soc_dai_set_fmt(cpu_dai, fmt);
  80                 snd_soc_dai_set_fmt(codec_dai, codec_dai_fmt);
  81                 break;
  82         default:
  83                 break;
  84         }
  85
  86         return qcom_snd_sdw_startup(substream);
  87 }
  88
  89 static void sm8250_snd_shutdown(struct snd_pcm_substream *substream)
  90 {
  91         struct snd_soc_pcm_runtime *rtd = snd_soc_substream_to_rtd(substream);
  92         struct snd_soc_dai *cpu_dai = snd_soc_rtd_to_cpu(rtd, 0);
  93         struct sm8250_snd_data *data = snd_soc_card_get_drvdata(rtd->card);
  94         struct sdw_stream_runtime *sruntime = data->sruntime[cpu_dai->id];
  95
  96         data->sruntime[cpu_dai->id] = NULL;
  97         sdw_release_stream(sruntime);
  98 }
  99
 100 static int sm8250_snd_hw_params(struct snd_pcm_substream *substream,
 101                                 struct snd_pcm_hw_params *params)
 102 {
 103         struct snd_soc_pcm_runtime *rtd = snd_soc_substream_to_rtd(substream);
 104         struct snd_soc_dai *cpu_dai = snd_soc_rtd_to_cpu(rtd, 0);
 105         struct sm8250_snd_data *pdata = snd_soc_card_get_drvdata(rtd->card);
 106
 107         return qcom_snd_sdw_hw_params(substream, params, &pdata->sruntime[cpu_dai->id]);
 108 }
 109
 110 static int sm8250_snd_prepare(struct snd_pcm_substream *substream)
 111 {
 112         struct snd_soc_pcm_runtime *rtd = snd_soc_substream_to_rtd(substream);
 113         struct snd_soc_dai *cpu_dai = snd_soc_rtd_to_cpu(rtd, 0);
 114         struct sm8250_snd_data *data = snd_soc_card_get_drvdata(rtd->card);
 115         struct sdw_stream_runtime *sruntime = data->sruntime[cpu_dai->id];
 116
 117         return qcom_snd_sdw_prepare(substream, sruntime,
 118                                     &data->stream_prepared[cpu_dai->id]);
 119 }
 120
 121 static int sm8250_snd_hw_free(struct snd_pcm_substream *substream)
 122 {
 123         struct snd_soc_pcm_runtime *rtd = snd_soc_substream_to_rtd(substream);
 124         struct sm8250_snd_data *data = snd_soc_card_get_drvdata(rtd->card);
 125         struct snd_soc_dai *cpu_dai = snd_soc_rtd_to_cpu(rtd, 0);
 126         struct sdw_stream_runtime *sruntime = data->sruntime[cpu_dai->id];
 127
 128         return qcom_snd_sdw_hw_free(substream, sruntime,
 129                                     &data->stream_prepared[cpu_dai->id]);
 130 }
 131
 132 static const struct snd_soc_ops sm8250_be_ops = {
 133         .startup = sm8250_snd_startup,
 134         .shutdown = sm8250_snd_shutdown,
 135         .hw_params = sm8250_snd_hw_params,
 136         .hw_free = sm8250_snd_hw_free,
 137         .prepare = sm8250_snd_prepare,
 138 };
 139
 140 static void sm8250_add_be_ops(struct snd_soc_card *card)
 141 {
 142         struct snd_soc_dai_link *link;
 143         int i;
 144
 145         for_each_card_prelinks(card, i, link) {
 146                 if (link->no_pcm == 1) {
 147                         link->init = sm8250_snd_init;
 148                         link->be_hw_params_fixup = sm8250_be_hw_params_fixup;
 149                         link->ops = &sm8250_be_ops;
 150                 }
 151         }
 152 }
 153
 154 static int sm8250_platform_probe(struct platform_device *pdev)
 155 {
 156         struct snd_soc_card *card;
 157         struct sm8250_snd_data *data;
 158         struct device *dev = &pdev->dev;
 159         int ret;
 160
 161         card = devm_kzalloc(dev, sizeof(*card), GFP_KERNEL);
 162         if (!card)
 163                 return -ENOMEM;
 164
 165         card->owner = THIS_MODULE;
 166         /* Allocate the private data */
 167         data = devm_kzalloc(dev, sizeof(*data), GFP_KERNEL);
 168         if (!data)
 169                 return -ENOMEM;
 170
 171         card->dev = dev;
 172         dev_set_drvdata(dev, card);
 173         snd_soc_card_set_drvdata(card, data);
 174         ret = qcom_snd_parse_of(card);
 175         if (ret)
 176                 return ret;
 177
 178         card->driver_name = DRIVER_NAME;
 179         sm8250_add_be_ops(card);
 180         return devm_snd_soc_register_card(dev, card);
 181 }
 182
 183 static const struct of_device_id snd_sm8250_dt_match[] = {
 184         {.compatible = "qcom,sm8250-sndcard"},
 185         {.compatible = "qcom,qrb4210-rb2-sndcard"},
 186         {.compatible = "qcom,qrb5165-rb5-sndcard"},
 187         {}
 188 };
 189
 190 MODULE_DEVICE_TABLE(of, snd_sm8250_dt_match);
 191
 192 static struct platform_driver snd_sm8250_driver = {
 193         .probe  = sm8250_platform_probe,
 194         .driver = {
 195                 .name = "snd-sm8250",
 196                 .of_match_table = snd_sm8250_dt_match,
 197         },
 198 };
 199 module_platform_driver(snd_sm8250_driver);
 200 MODULE_AUTHOR("Srinivas Kandagatla <srinivas.kandagatla@linaro.org");
 201 MODULE_DESCRIPTION("SM8250 ASoC Machine Driver");
 202 MODULE_LICENSE("GPL");