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
  31         return qcom_snd_wcd_jack_setup(rtd, &data->jack, &data->jack_setup);
  32 }
  33
  34 static int sc8280xp_be_hw_params_fixup(struct snd_soc_pcm_runtime *rtd,
  35                                      struct snd_pcm_hw_params *params)
  36 {
  37         struct snd_soc_dai *cpu_dai = asoc_rtd_to_cpu(rtd, 0);
  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 = 2;
  45         channels->max = 2;
  46         switch (cpu_dai->id) {
  47         case TX_CODEC_DMA_TX_0:
  48         case TX_CODEC_DMA_TX_1:
  49         case TX_CODEC_DMA_TX_2:
  50         case TX_CODEC_DMA_TX_3:
  51                 channels->min = 1;
  52                 break;
  53         default:
  54                 break;
  55         }
  56
  57
  58         return 0;
  59 }
  60
  61 static int sc8280xp_snd_hw_params(struct snd_pcm_substream *substream,
  62                                 struct snd_pcm_hw_params *params)
  63 {
  64         struct snd_soc_pcm_runtime *rtd = substream->private_data;
  65         struct snd_soc_dai *cpu_dai = asoc_rtd_to_cpu(rtd, 0);
  66         struct sc8280xp_snd_data *pdata = snd_soc_card_get_drvdata(rtd->card);
  67
  68         return qcom_snd_sdw_hw_params(substream, params, &pdata->sruntime[cpu_dai->id]);
  69 }
  70
  71 static int sc8280xp_snd_prepare(struct snd_pcm_substream *substream)
  72 {
  73         struct snd_soc_pcm_runtime *rtd = substream->private_data;
  74         struct snd_soc_dai *cpu_dai = asoc_rtd_to_cpu(rtd, 0);
  75         struct sc8280xp_snd_data *data = snd_soc_card_get_drvdata(rtd->card);
  76         struct sdw_stream_runtime *sruntime = data->sruntime[cpu_dai->id];
  77
  78         return qcom_snd_sdw_prepare(substream, sruntime,
  79                                     &data->stream_prepared[cpu_dai->id]);
  80 }
  81
  82 static int sc8280xp_snd_hw_free(struct snd_pcm_substream *substream)
  83 {
  84         struct snd_soc_pcm_runtime *rtd = substream->private_data;
  85         struct sc8280xp_snd_data *data = snd_soc_card_get_drvdata(rtd->card);
  86         struct snd_soc_dai *cpu_dai = asoc_rtd_to_cpu(rtd, 0);
  87         struct sdw_stream_runtime *sruntime = data->sruntime[cpu_dai->id];
  88
  89         return qcom_snd_sdw_hw_free(substream, sruntime,
  90                                     &data->stream_prepared[cpu_dai->id]);
  91 }
  92
  93 static const struct snd_soc_ops sc8280xp_be_ops = {
  94         .hw_params = sc8280xp_snd_hw_params,
  95         .hw_free = sc8280xp_snd_hw_free,
  96         .prepare = sc8280xp_snd_prepare,
  97 };
  98
  99 static void sc8280xp_add_be_ops(struct snd_soc_card *card)
 100 {
 101         struct snd_soc_dai_link *link;
 102         int i;
 103
 104         for_each_card_prelinks(card, i, link) {
 105                 if (link->no_pcm == 1) {
 106                         link->init = sc8280xp_snd_init;
 107                         link->be_hw_params_fixup = sc8280xp_be_hw_params_fixup;
 108                         link->ops = &sc8280xp_be_ops;
 109                 }
 110         }
 111 }
 112
 113 static int sc8280xp_platform_probe(struct platform_device *pdev)
 114 {
 115         struct snd_soc_card *card;
 116         struct sc8280xp_snd_data *data;
 117         struct device *dev = &pdev->dev;
 118         int ret;
 119
 120         card = devm_kzalloc(dev, sizeof(*card), GFP_KERNEL);
 121         if (!card)
 122                 return -ENOMEM;
 123         card->owner = THIS_MODULE;
 124         /* Allocate the private data */
 125         data = devm_kzalloc(dev, sizeof(*data), GFP_KERNEL);
 126         if (!data)
 127                 return -ENOMEM;
 128
 129         card->dev = dev;
 130         dev_set_drvdata(dev, card);
 131         snd_soc_card_set_drvdata(card, data);
 132         ret = qcom_snd_parse_of(card);
 133         if (ret)
 134                 return ret;
 135
 136         card->driver_name = DRIVER_NAME;
 137         sc8280xp_add_be_ops(card);
 138         return devm_snd_soc_register_card(dev, card);
 139 }
 140
 141 static const struct of_device_id snd_sc8280xp_dt_match[] = {
 142         {.compatible = "qcom,sc8280xp-sndcard",},
 143         {}
 144 };
 145
 146 MODULE_DEVICE_TABLE(of, snd_sc8280xp_dt_match);
 147
 148 static struct platform_driver snd_sc8280xp_driver = {
 149         .probe  = sc8280xp_platform_probe,
 150         .driver = {
 151                 .name = "snd-sc8280xp",
 152                 .of_match_table = snd_sc8280xp_dt_match,
 153         },
 154 };
 155 module_platform_driver(snd_sc8280xp_driver);
 156 MODULE_AUTHOR("Srinivas Kandagatla <srinivas.kandagatla@linaro.org");
 157 MODULE_DESCRIPTION("SC8280XP ASoC Machine Driver");
 158 MODULE_LICENSE("GPL v2");