sound/soc/qcom/apq8096.c

   1 // SPDX-License-Identifier: GPL-2.0
   2 // Copyright (c) 2018, 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 "common.h"
  11
  12 #define SLIM_MAX_TX_PORTS 16
  13 #define SLIM_MAX_RX_PORTS 16
  14 #define WCD9335_DEFAULT_MCLK_RATE       9600000
  15
  16 static int apq8096_be_hw_params_fixup(struct snd_soc_pcm_runtime *rtd,
  17                                       struct snd_pcm_hw_params *params)
  18 {
  19         struct snd_interval *rate = hw_param_interval(params,
  20                                         SNDRV_PCM_HW_PARAM_RATE);
  21         struct snd_interval *channels = hw_param_interval(params,
  22                                         SNDRV_PCM_HW_PARAM_CHANNELS);
  23
  24         rate->min = rate->max = 48000;
  25         channels->min = channels->max = 2;
  26
  27         return 0;
  28 }
  29
  30 static int msm_snd_hw_params(struct snd_pcm_substream *substream,
  31                              struct snd_pcm_hw_params *params)
  32 {
  33         struct snd_soc_pcm_runtime *rtd = substream->private_data;
  34         struct snd_soc_dai *codec_dai = rtd->codec_dai;
  35         struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
  36         u32 rx_ch[SLIM_MAX_RX_PORTS], tx_ch[SLIM_MAX_TX_PORTS];
  37         u32 rx_ch_cnt = 0, tx_ch_cnt = 0;
  38         int ret = 0;
  39
  40         ret = snd_soc_dai_get_channel_map(codec_dai,
  41                                 &tx_ch_cnt, tx_ch, &rx_ch_cnt, rx_ch);
  42         if (ret != 0 && ret != -ENOTSUPP) {
  43                 pr_err("failed to get codec chan map, err:%d\n", ret);
  44                 goto end;
  45         } else if (ret == -ENOTSUPP) {
  46                 return 0;
  47         }
  48
  49         if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
  50                 ret = snd_soc_dai_set_channel_map(cpu_dai, 0, NULL,
  51                                                   rx_ch_cnt, rx_ch);
  52         else
  53                 ret = snd_soc_dai_set_channel_map(cpu_dai, tx_ch_cnt, tx_ch,
  54                                                   0, NULL);
  55         if (ret != 0 && ret != -ENOTSUPP)
  56                 pr_err("Failed to set cpu chan map, err:%d\n", ret);
  57         else if (ret == -ENOTSUPP)
  58                 ret = 0;
  59 end:
  60         return ret;
  61 }
  62
  63 static struct snd_soc_ops apq8096_ops = {
  64         .hw_params = msm_snd_hw_params,
  65 };
  66
  67 static int apq8096_init(struct snd_soc_pcm_runtime *rtd)
  68 {
  69         struct snd_soc_dai *codec_dai = rtd->codec_dai;
  70
  71         /*
  72          * Codec SLIMBUS configuration
  73          * RX1, RX2, RX3, RX4, RX5, RX6, RX7, RX8, RX9, RX10, RX11, RX12, RX13
  74          * TX1, TX2, TX3, TX4, TX5, TX6, TX7, TX8, TX9, TX10, TX11, TX12, TX13
  75          * TX14, TX15, TX16
  76          */
  77         unsigned int rx_ch[SLIM_MAX_RX_PORTS] = {144, 145, 146, 147, 148, 149,
  78                                         150, 151, 152, 153, 154, 155, 156};
  79         unsigned int tx_ch[SLIM_MAX_TX_PORTS] = {128, 129, 130, 131, 132, 133,
  80                                             134, 135, 136, 137, 138, 139,
  81                                             140, 141, 142, 143};
  82
  83         snd_soc_dai_set_channel_map(codec_dai, ARRAY_SIZE(tx_ch),
  84                                         tx_ch, ARRAY_SIZE(rx_ch), rx_ch);
  85
  86         snd_soc_dai_set_sysclk(codec_dai, 0, WCD9335_DEFAULT_MCLK_RATE,
  87                                 SNDRV_PCM_STREAM_PLAYBACK);
  88
  89         return 0;
  90 }
  91
  92 static void apq8096_add_be_ops(struct snd_soc_card *card)
  93 {
  94         struct snd_soc_dai_link *link;
  95         int i;
  96
  97         for_each_card_prelinks(card, i, link) {
  98                 if (link->no_pcm == 1) {
  99                         link->be_hw_params_fixup = apq8096_be_hw_params_fixup;
 100                         link->init = apq8096_init;
 101                         link->ops = &apq8096_ops;
 102                 }
 103         }
 104 }
 105
 106 static int apq8096_platform_probe(struct platform_device *pdev)
 107 {
 108         struct snd_soc_card *card;
 109         struct device *dev = &pdev->dev;
 110         int ret;
 111
 112         card = kzalloc(sizeof(*card), GFP_KERNEL);
 113         if (!card)
 114                 return -ENOMEM;
 115
 116         card->dev = dev;
 117         dev_set_drvdata(dev, card);
 118         ret = qcom_snd_parse_of(card);
 119         if (ret) {
 120                 dev_err(dev, "Error parsing OF data\n");
 121                 goto err;
 122         }
 123
 124         apq8096_add_be_ops(card);
 125         ret = snd_soc_register_card(card);
 126         if (ret)
 127                 goto err_card_register;
 128
 129         return 0;
 130
 131 err_card_register:
 132         kfree(card->dai_link);
 133 err:
 134         kfree(card);
 135         return ret;
 136 }
 137
 138 static int apq8096_platform_remove(struct platform_device *pdev)
 139 {
 140         struct snd_soc_card *card = dev_get_drvdata(&pdev->dev);
 141
 142         snd_soc_unregister_card(card);
 143         kfree(card->dai_link);
 144         kfree(card);
 145
 146         return 0;
 147 }
 148
 149 static const struct of_device_id msm_snd_apq8096_dt_match[] = {
 150         {.compatible = "qcom,apq8096-sndcard"},
 151         {}
 152 };
 153
 154 MODULE_DEVICE_TABLE(of, msm_snd_apq8096_dt_match);
 155
 156 static struct platform_driver msm_snd_apq8096_driver = {
 157         .probe  = apq8096_platform_probe,
 158         .remove = apq8096_platform_remove,
 159         .driver = {
 160                 .name = "msm-snd-apq8096",
 161                 .of_match_table = msm_snd_apq8096_dt_match,
 162         },
 163 };
 164 module_platform_driver(msm_snd_apq8096_driver);
 165 MODULE_AUTHOR("Srinivas Kandagatla <srinivas.kandagatla@linaro.org");
 166 MODULE_DESCRIPTION("APQ8096 ASoC Machine Driver");
 167 MODULE_LICENSE("GPL v2");