sound/soc/qcom/sc8280xp.c

   1 // SPDX-License-Identifier: GPL-2.0
   2 // Copyright (c) 2022, 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 struct sc8280xp_snd_data {
  18         bool stream_prepared[AFE_PORT_MAX];
  19         struct snd_soc_card *card;
  20         struct sdw_stream_runtime *sruntime[AFE_PORT_MAX];
  21         struct snd_soc_jack jack;
  22         bool jack_setup;
  23 };
  24
  25 static int sc8280xp_snd_init(struct snd_soc_pcm_runtime *rtd)
  26 {
  27         struct sc8280xp_snd_data *data = snd_soc_card_get_drvdata(rtd->card);
  28         struct snd_soc_dai *cpu_dai = snd_soc_rtd_to_cpu(rtd, 0);
  29         struct snd_soc_card *card = rtd->card;
  30
  31         switch (cpu_dai->id) {
  32         case WSA_CODEC_DMA_RX_0:
  33         case WSA_CODEC_DMA_RX_1:
  34                 /*
  35                  * Set limit of -3 dB on Digital Volume and 0 dB on PA Volume
  36                  * to reduce the risk of speaker damage until we have active
  37                  * speaker protection in place.
  38                  */
  39                 snd_soc_limit_volume(card, "WSA_RX0 Digital Volume", 81);
  40                 snd_soc_limit_volume(card, "WSA_RX1 Digital Volume", 81);
  41                 snd_soc_limit_volume(card, "SpkrLeft PA Volume", 17);
  42                 snd_soc_limit_volume(card, "SpkrRight PA Volume", 17);
  43                 break;
  44         default:
  45                 break;
  46         }
  47
  48         return qcom_snd_wcd_jack_setup(rtd, &data->jack, &data->jack_setup);
  49 }
  50
  51 static void sc8280xp_snd_shutdown(struct snd_pcm_substream *substream)
  52 {
  53         struct snd_soc_pcm_runtime *rtd = substream->private_data;
  54         struct snd_soc_dai *cpu_dai = snd_soc_rtd_to_cpu(rtd, 0);
  55         struct sc8280xp_snd_data *pdata = snd_soc_card_get_drvdata(rtd->card);
  56         struct sdw_stream_runtime *sruntime = pdata->sruntime[cpu_dai->id];
  57
  58         pdata->sruntime[cpu_dai->id] = NULL;
  59         sdw_release_stream(sruntime);
  60 }
  61
  62 static int sc8280xp_be_hw_params_fixup(struct snd_soc_pcm_runtime *rtd,
  63                                      struct snd_pcm_hw_params *params)
  64 {
  65         struct snd_soc_dai *cpu_dai = snd_soc_rtd_to_cpu(rtd, 0);
  66         struct snd_interval *rate = hw_param_interval(params,
  67                                         SNDRV_PCM_HW_PARAM_RATE);
  68         struct snd_interval *channels = hw_param_interval(params,
  69                                         SNDRV_PCM_HW_PARAM_CHANNELS);
  70
  71         rate->min = rate->max = 48000;
  72         channels->min = 2;
  73         channels->max = 2;
  74         switch (cpu_dai->id) {
  75         case TX_CODEC_DMA_TX_0:
  76         case TX_CODEC_DMA_TX_1:
  77         case TX_CODEC_DMA_TX_2:
  78         case TX_CODEC_DMA_TX_3:
  79                 channels->min = 1;
  80                 break;
  81         default:
  82                 break;
  83         }
  84
  85
  86         return 0;
  87 }
  88
  89 static int sc8280xp_snd_hw_params(struct snd_pcm_substream *substream,
  90                                 struct snd_pcm_hw_params *params)
  91 {
  92         struct snd_soc_pcm_runtime *rtd = substream->private_data;
  93         struct snd_soc_dai *cpu_dai = snd_soc_rtd_to_cpu(rtd, 0);
  94         struct sc8280xp_snd_data *pdata = snd_soc_card_get_drvdata(rtd->card);
  95
  96         return qcom_snd_sdw_hw_params(substream, params, &pdata->sruntime[cpu_dai->id]);
  97 }
  98
  99 static int sc8280xp_snd_prepare(struct snd_pcm_substream *substream)
 100 {
 101         struct snd_soc_pcm_runtime *rtd = substream->private_data;
 102         struct snd_soc_dai *cpu_dai = snd_soc_rtd_to_cpu(rtd, 0);
 103         struct sc8280xp_snd_data *data = snd_soc_card_get_drvdata(rtd->card);
 104         struct sdw_stream_runtime *sruntime = data->sruntime[cpu_dai->id];
 105
 106         return qcom_snd_sdw_prepare(substream, sruntime,
 107                                     &data->stream_prepared[cpu_dai->id]);
 108 }
 109
 110 static int sc8280xp_snd_hw_free(struct snd_pcm_substream *substream)
 111 {
 112         struct snd_soc_pcm_runtime *rtd = substream->private_data;
 113         struct sc8280xp_snd_data *data = snd_soc_card_get_drvdata(rtd->card);
 114         struct snd_soc_dai *cpu_dai = snd_soc_rtd_to_cpu(rtd, 0);
 115         struct sdw_stream_runtime *sruntime = data->sruntime[cpu_dai->id];
 116
 117         return qcom_snd_sdw_hw_free(substream, sruntime,
 118                                     &data->stream_prepared[cpu_dai->id]);
 119 }
 120
 121 static const struct snd_soc_ops sc8280xp_be_ops = {
 122         .startup = qcom_snd_sdw_startup,
 123         .shutdown = sc8280xp_snd_shutdown,
 124         .hw_params = sc8280xp_snd_hw_params,
 125         .hw_free = sc8280xp_snd_hw_free,
 126         .prepare = sc8280xp_snd_prepare,
 127 };
 128
 129 static void sc8280xp_add_be_ops(struct snd_soc_card *card)
 130 {
 131         struct snd_soc_dai_link *link;
 132         int i;
 133
 134         for_each_card_prelinks(card, i, link) {
 135                 if (link->no_pcm == 1) {
 136                         link->init = sc8280xp_snd_init;
 137                         link->be_hw_params_fixup = sc8280xp_be_hw_params_fixup;
 138                         link->ops = &sc8280xp_be_ops;
 139                 }
 140         }
 141 }
 142
 143 static int sc8280xp_platform_probe(struct platform_device *pdev)
 144 {
 145         struct snd_soc_card *card;
 146         struct sc8280xp_snd_data *data;
 147         struct device *dev = &pdev->dev;
 148         int ret;
 149
 150         card = devm_kzalloc(dev, sizeof(*card), GFP_KERNEL);
 151         if (!card)
 152                 return -ENOMEM;
 153         card->owner = THIS_MODULE;
 154         /* Allocate the private data */
 155         data = devm_kzalloc(dev, sizeof(*data), GFP_KERNEL);
 156         if (!data)
 157                 return -ENOMEM;
 158
 159         card->dev = dev;
 160         dev_set_drvdata(dev, card);
 161         snd_soc_card_set_drvdata(card, data);
 162         ret = qcom_snd_parse_of(card);
 163         if (ret)
 164                 return ret;
 165
 166         card->driver_name = of_device_get_match_data(dev);
 167         sc8280xp_add_be_ops(card);
 168         return devm_snd_soc_register_card(dev, card);
 169 }
 170
 171 static const struct of_device_id snd_sc8280xp_dt_match[] = {
 172         {.compatible = "qcom,sc8280xp-sndcard", "sc8280xp"},
 173         {.compatible = "qcom,sm8450-sndcard", "sm8450"},
 174         {.compatible = "qcom,sm8550-sndcard", "sm8550"},
 175         {.compatible = "qcom,sm8650-sndcard", "sm8650"},
 176         {}
 177 };
 178
 179 MODULE_DEVICE_TABLE(of, snd_sc8280xp_dt_match);
 180
 181 static struct platform_driver snd_sc8280xp_driver = {
 182         .probe  = sc8280xp_platform_probe,
 183         .driver = {
 184                 .name = "snd-sc8280xp",
 185                 .of_match_table = snd_sc8280xp_dt_match,
 186         },
 187 };
 188 module_platform_driver(snd_sc8280xp_driver);
 189 MODULE_AUTHOR("Srinivas Kandagatla <srinivas.kandagatla@linaro.org");
 190 MODULE_DESCRIPTION("SC8280XP ASoC Machine Driver");
 191 MODULE_LICENSE("GPL");