sound/soc/samsung/arndale.c

   1 // SPDX-License-Identifier: GPL-2.0+
   2 //
   3 // Copyright (c) 2014, Insignal Co., Ltd.
   4 //
   5 //  Author: Claude <claude@insginal.co.kr>
   6
   7 #include <linux/module.h>
   8 #include <linux/of_device.h>
   9 #include <linux/platform_device.h>
  10 #include <linux/clk.h>
  11
  12 #include <sound/soc.h>
  13 #include <sound/soc-dapm.h>
  14 #include <sound/pcm.h>
  15 #include <sound/pcm_params.h>
  16
  17 #include "../codecs/wm8994.h"
  18 #include "i2s.h"
  19
  20 static int arndale_rt5631_hw_params(struct snd_pcm_substream *substream,
  21                                     struct snd_pcm_hw_params *params)
  22 {
  23         struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream);
  24         struct snd_soc_dai *cpu_dai = asoc_rtd_to_cpu(rtd, 0);
  25         struct snd_soc_dai *codec_dai = asoc_rtd_to_codec(rtd, 0);
  26         int rfs, ret;
  27         unsigned long rclk;
  28
  29         rfs = 256;
  30
  31         rclk = params_rate(params) * rfs;
  32
  33         ret = snd_soc_dai_set_sysclk(cpu_dai, SAMSUNG_I2S_CDCLK,
  34                                         0, SND_SOC_CLOCK_OUT);
  35         if (ret < 0)
  36                 return ret;
  37
  38         ret = snd_soc_dai_set_sysclk(cpu_dai, SAMSUNG_I2S_RCLKSRC_0,
  39                                         0, SND_SOC_CLOCK_OUT);
  40
  41         if (ret < 0)
  42                 return ret;
  43
  44         ret = snd_soc_dai_set_sysclk(codec_dai, 0, rclk, SND_SOC_CLOCK_OUT);
  45         if (ret < 0)
  46                 return ret;
  47
  48         return 0;
  49 }
  50
  51 static const struct snd_soc_ops arndale_rt5631_ops = {
  52         .hw_params = arndale_rt5631_hw_params,
  53 };
  54
  55 static int arndale_wm1811_hw_params(struct snd_pcm_substream *substream,
  56                                     struct snd_pcm_hw_params *params)
  57 {
  58         struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream);
  59         struct snd_soc_dai *codec_dai = asoc_rtd_to_codec(rtd, 0);
  60         unsigned int rfs, rclk;
  61
  62         /* Ensure AIF1CLK is >= 3 MHz for optimal performance */
  63         if (params_width(params) == 24)
  64                 rfs = 384;
  65         else if (params_rate(params) == 8000 || params_rate(params) == 11025)
  66                 rfs = 512;
  67         else
  68                 rfs = 256;
  69
  70         rclk = params_rate(params) * rfs;
  71
  72         /*
  73          * We add 1 to the frequency value to ensure proper EPLL setting
  74          * for each audio sampling rate (see epll_24mhz_tbl in drivers/clk/
  75          * samsung/clk-exynos5250.c for list of available EPLL rates).
  76          * The CODEC uses clk API and the value will be rounded hence the MCLK1
  77          * clock's frequency will still be exact multiple of the sample rate.
  78          */
  79         return snd_soc_dai_set_sysclk(codec_dai, WM8994_SYSCLK_MCLK1,
  80                                         rclk + 1, SND_SOC_CLOCK_IN);
  81 }
  82
  83 static const struct snd_soc_ops arndale_wm1811_ops = {
  84         .hw_params = arndale_wm1811_hw_params,
  85 };
  86
  87 SND_SOC_DAILINK_DEFS(rt5631_hifi,
  88         DAILINK_COMP_ARRAY(COMP_EMPTY()),
  89         DAILINK_COMP_ARRAY(COMP_CODEC(NULL, "rt5631-aif1")),
  90         DAILINK_COMP_ARRAY(COMP_EMPTY()));
  91
  92 static struct snd_soc_dai_link arndale_rt5631_dai[] = {
  93         {
  94                 .name = "RT5631 HiFi",
  95                 .stream_name = "Primary",
  96                 .dai_fmt = SND_SOC_DAIFMT_I2S
  97                         | SND_SOC_DAIFMT_NB_NF
  98                         | SND_SOC_DAIFMT_CBS_CFS,
  99                 .ops = &arndale_rt5631_ops,
 100                 SND_SOC_DAILINK_REG(rt5631_hifi),
 101         },
 102 };
 103
 104 SND_SOC_DAILINK_DEFS(wm1811_hifi,
 105         DAILINK_COMP_ARRAY(COMP_EMPTY()),
 106         DAILINK_COMP_ARRAY(COMP_CODEC(NULL, "wm8994-aif1")),
 107         DAILINK_COMP_ARRAY(COMP_EMPTY()));
 108
 109 static struct snd_soc_dai_link arndale_wm1811_dai[] = {
 110         {
 111                 .name = "WM1811 HiFi",
 112                 .stream_name = "Primary",
 113                 .dai_fmt = SND_SOC_DAIFMT_I2S
 114                         | SND_SOC_DAIFMT_NB_NF
 115                         | SND_SOC_DAIFMT_CBM_CFM,
 116                 .ops = &arndale_wm1811_ops,
 117                 SND_SOC_DAILINK_REG(wm1811_hifi),
 118         },
 119 };
 120
 121 static struct snd_soc_card arndale_rt5631 = {
 122         .name = "Arndale RT5631",
 123         .owner = THIS_MODULE,
 124         .dai_link = arndale_rt5631_dai,
 125         .num_links = ARRAY_SIZE(arndale_rt5631_dai),
 126 };
 127
 128 static struct snd_soc_card arndale_wm1811 = {
 129         .name = "Arndale WM1811",
 130         .owner = THIS_MODULE,
 131         .dai_link = arndale_wm1811_dai,
 132         .num_links = ARRAY_SIZE(arndale_wm1811_dai),
 133 };
 134
 135 static void arndale_put_of_nodes(struct snd_soc_card *card)
 136 {
 137         struct snd_soc_dai_link *dai_link;
 138         int i;
 139
 140         for_each_card_prelinks(card, i, dai_link) {
 141                 of_node_put(dai_link->cpus->of_node);
 142                 of_node_put(dai_link->codecs->of_node);
 143         }
 144 }
 145
 146 static int arndale_audio_probe(struct platform_device *pdev)
 147 {
 148         struct device_node *np = pdev->dev.of_node;
 149         struct snd_soc_card *card;
 150         struct snd_soc_dai_link *dai_link;
 151         int ret;
 152
 153         card = (struct snd_soc_card *)of_device_get_match_data(&pdev->dev);
 154         card->dev = &pdev->dev;
 155         dai_link = card->dai_link;
 156
 157         dai_link->cpus->of_node = of_parse_phandle(np, "samsung,audio-cpu", 0);
 158         if (!dai_link->cpus->of_node) {
 159                 dev_err(&pdev->dev,
 160                         "Property 'samsung,audio-cpu' missing or invalid\n");
 161                 return -EINVAL;
 162         }
 163
 164         if (!dai_link->platforms->name)
 165                 dai_link->platforms->of_node = dai_link->cpus->of_node;
 166
 167         dai_link->codecs->of_node = of_parse_phandle(np, "samsung,audio-codec", 0);
 168         if (!dai_link->codecs->of_node) {
 169                 dev_err(&pdev->dev,
 170                         "Property 'samsung,audio-codec' missing or invalid\n");
 171                 ret = -EINVAL;
 172                 goto err_put_of_nodes;
 173         }
 174
 175         ret = devm_snd_soc_register_card(card->dev, card);
 176         if (ret) {
 177                 if (ret != -EPROBE_DEFER)
 178                         dev_err(&pdev->dev,
 179                                 "snd_soc_register_card() failed: %d\n", ret);
 180                 goto err_put_of_nodes;
 181         }
 182         return 0;
 183
 184 err_put_of_nodes:
 185         arndale_put_of_nodes(card);
 186         return ret;
 187 }
 188
 189 static int arndale_audio_remove(struct platform_device *pdev)
 190 {
 191         struct snd_soc_card *card = platform_get_drvdata(pdev);
 192
 193         arndale_put_of_nodes(card);
 194         return 0;
 195 }
 196
 197 static const struct of_device_id arndale_audio_of_match[] = {
 198         { .compatible = "samsung,arndale-rt5631",  .data = &arndale_rt5631 },
 199         { .compatible = "samsung,arndale-alc5631", .data = &arndale_rt5631 },
 200         { .compatible = "samsung,arndale-wm1811",  .data = &arndale_wm1811 },
 201         {},
 202 };
 203 MODULE_DEVICE_TABLE(of, arndale_audio_of_match);
 204
 205 static struct platform_driver arndale_audio_driver = {
 206         .driver = {
 207                 .name = "arndale-audio",
 208                 .pm = &snd_soc_pm_ops,
 209                 .of_match_table = arndale_audio_of_match,
 210         },
 211         .probe = arndale_audio_probe,
 212         .remove = arndale_audio_remove,
 213 };
 214
 215 module_platform_driver(arndale_audio_driver);
 216
 217 MODULE_AUTHOR("Claude <claude@insignal.co.kr>");
 218 MODULE_DESCRIPTION("ALSA SoC Driver for Arndale Board");
 219 MODULE_LICENSE("GPL");