sound/soc/qcom/sc8280xp.c

   1 // SPDX-License-Identifier: GPL-2.0
   2 // Copyright (c) 2022, Linaro Limited
   3
   4 #include <linux/module.h>
   5 #include <linux/platform_device.h>
   6 #include <linux/of_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             "sc8280xp"
  18
  19 struct sc8280xp_snd_data {
  20         bool stream_prepared[AFE_PORT_MAX];
  21         struct snd_soc_card *card;
  22         struct sdw_stream_runtime *sruntime[AFE_PORT_MAX];
  23         struct snd_soc_jack jack;
  24         bool jack_setup;
  25 };
  26
  27 static int sc8280xp_snd_init(struct snd_soc_pcm_runtime *rtd)
  28 {
  29         struct sc8280xp_snd_data *data = snd_soc_card_get_drvdata(rtd->card);
  30         struct snd_soc_dai *cpu_dai = asoc_rtd_to_cpu(rtd, 0);
  31         struct snd_soc_card *card = rtd->card;
  32
  33         switch (cpu_dai->id) {
  34         case WSA_CODEC_DMA_RX_0:
  35         case WSA_CODEC_DMA_RX_1:
  36                 /*
  37                  * set limit of 0dB on Digital Volume for Speakers,
  38                  * this can prevent damage of speakers to some extent without
  39                  * active speaker protection
  40                  */
  41                 snd_soc_limit_volume(card, "WSA_RX0 Digital Volume", 84);
  42                 snd_soc_limit_volume(card, "WSA_RX1 Digital Volume", 84);
  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 int sc8280xp_be_hw_params_fixup(struct snd_soc_pcm_runtime *rtd,
  52                                      struct snd_pcm_hw_params *params)
  53 {
  54         struct snd_soc_dai *cpu_dai = asoc_rtd_to_cpu(rtd, 0);
  55         struct snd_interval *rate = hw_param_interval(params,
  56                                         SNDRV_PCM_HW_PARAM_RATE);
  57         struct snd_interval *channels = hw_param_interval(params,
  58                                         SNDRV_PCM_HW_PARAM_CHANNELS);
  59
  60         rate->min = rate->max = 48000;
  61         channels->min = 2;
  62         channels->max = 2;
  63         switch (cpu_dai->id) {
  64         case TX_CODEC_DMA_TX_0:
  65         case TX_CODEC_DMA_TX_1:
  66         case TX_CODEC_DMA_TX_2:
  67         case TX_CODEC_DMA_TX_3:
  68                 channels->min = 1;
  69                 break;
  70         default:
  71                 break;
  72         }
  73
  74
  75         return 0;
  76 }
  77
  78 static int sc8280xp_snd_hw_params(struct snd_pcm_substream *substream,
  79                                 struct snd_pcm_hw_params *params)
  80 {
  81         struct snd_soc_pcm_runtime *rtd = substream->private_data;
  82         struct snd_soc_dai *cpu_dai = asoc_rtd_to_cpu(rtd, 0);
  83         struct sc8280xp_snd_data *pdata = snd_soc_card_get_drvdata(rtd->card);
  84
  85         return qcom_snd_sdw_hw_params(substream, params, &pdata->sruntime[cpu_dai->id]);
  86 }
  87
  88 static int sc8280xp_snd_prepare(struct snd_pcm_substream *substream)
  89 {
  90         struct snd_soc_pcm_runtime *rtd = substream->private_data;
  91         struct snd_soc_dai *cpu_dai = asoc_rtd_to_cpu(rtd, 0);
  92         struct sc8280xp_snd_data *data = snd_soc_card_get_drvdata(rtd->card);
  93         struct sdw_stream_runtime *sruntime = data->sruntime[cpu_dai->id];
  94
  95         return qcom_snd_sdw_prepare(substream, sruntime,
  96                                     &data->stream_prepared[cpu_dai->id]);
  97 }
  98
  99 static int sc8280xp_snd_hw_free(struct snd_pcm_substream *substream)
 100 {
 101         struct snd_soc_pcm_runtime *rtd = substream->private_data;
 102         struct sc8280xp_snd_data *data = snd_soc_card_get_drvdata(rtd->card);
 103         struct snd_soc_dai *cpu_dai = asoc_rtd_to_cpu(rtd, 0);
 104         struct sdw_stream_runtime *sruntime = data->sruntime[cpu_dai->id];
 105
 106         return qcom_snd_sdw_hw_free(substream, sruntime,
 107                                     &data->stream_prepared[cpu_dai->id]);
 108 }
 109
 110 static const struct snd_soc_ops sc8280xp_be_ops = {
 111         .hw_params = sc8280xp_snd_hw_params,
 112         .hw_free = sc8280xp_snd_hw_free,
 113         .prepare = sc8280xp_snd_prepare,
 114 };
 115
 116 static void sc8280xp_add_be_ops(struct snd_soc_card *card)
 117 {
 118         struct snd_soc_dai_link *link;
 119         int i;
 120
 121         for_each_card_prelinks(card, i, link) {
 122                 if (link->no_pcm == 1) {
 123                         link->init = sc8280xp_snd_init;
 124                         link->be_hw_params_fixup = sc8280xp_be_hw_params_fixup;
 125                         link->ops = &sc8280xp_be_ops;
 126                 }
 127         }
 128 }
 129
 130 static int sc8280xp_platform_probe(struct platform_device *pdev)
 131 {
 132         struct snd_soc_card *card;
 133         struct sc8280xp_snd_data *data;
 134         struct device *dev = &pdev->dev;
 135         int ret;
 136
 137         card = devm_kzalloc(dev, sizeof(*card), GFP_KERNEL);
 138         if (!card)
 139                 return -ENOMEM;
 140         card->owner = THIS_MODULE;
 141         /* Allocate the private data */
 142         data = devm_kzalloc(dev, sizeof(*data), GFP_KERNEL);
 143         if (!data)
 144                 return -ENOMEM;
 145
 146         card->dev = dev;
 147         dev_set_drvdata(dev, card);
 148         snd_soc_card_set_drvdata(card, data);
 149         ret = qcom_snd_parse_of(card);
 150         if (ret)
 151                 return ret;
 152
 153         card->driver_name = DRIVER_NAME;
 154         sc8280xp_add_be_ops(card);
 155         return devm_snd_soc_register_card(dev, card);
 156 }
 157
 158 static const struct of_device_id snd_sc8280xp_dt_match[] = {
 159         {.compatible = "qcom,sc8280xp-sndcard",},
 160         {}
 161 };
 162
 163 MODULE_DEVICE_TABLE(of, snd_sc8280xp_dt_match);
 164
 165 static struct platform_driver snd_sc8280xp_driver = {
 166         .probe  = sc8280xp_platform_probe,
 167         .driver = {
 168                 .name = "snd-sc8280xp",
 169                 .of_match_table = snd_sc8280xp_dt_match,
 170         },
 171 };
 172 module_platform_driver(snd_sc8280xp_driver);
 173 MODULE_AUTHOR("Srinivas Kandagatla <srinivas.kandagatla@linaro.org");
 174 MODULE_DESCRIPTION("SC8280XP ASoC Machine Driver");
 175 MODULE_LICENSE("GPL v2");