root/sound/soc/samsung/jive_wm8750.c

DEFINITIONS

1. jive_hw_params
2. jive_init
3. jive_exit

   1 // SPDX-License-Identifier: GPL-2.0
   2 //
   3 // Copyright 2007,2008 Simtec Electronics
   4 //
   5 // Based on sound/soc/pxa/spitz.c
   6 //      Copyright 2005 Wolfson Microelectronics PLC.
   7 //      Copyright 2005 Openedhand Ltd.
   8 
   9 #include <linux/module.h>
  10 #include <sound/soc.h>
  11 
  12 #include <asm/mach-types.h>
  13 
  14 #include "s3c2412-i2s.h"
  15 #include "../codecs/wm8750.h"
  16 
  17 static const struct snd_soc_dapm_route audio_map[] = {
  18         { "Headphone Jack", NULL, "LOUT1" },
  19         { "Headphone Jack", NULL, "ROUT1" },
  20         { "Internal Speaker", NULL, "LOUT2" },
  21         { "Internal Speaker", NULL, "ROUT2" },
  22         { "LINPUT1", NULL, "Line Input" },
  23         { "RINPUT1", NULL, "Line Input" },
  24 };
  25 
  26 static const struct snd_soc_dapm_widget wm8750_dapm_widgets[] = {
  27         SND_SOC_DAPM_HP("Headphone Jack", NULL),
  28         SND_SOC_DAPM_SPK("Internal Speaker", NULL),
  29         SND_SOC_DAPM_LINE("Line In", NULL),
  30 };
  31 
  32 static int jive_hw_params(struct snd_pcm_substream *substream,
  33                           struct snd_pcm_hw_params *params)
  34 {
  35         struct snd_soc_pcm_runtime *rtd = substream->private_data;
  36         struct snd_soc_dai *codec_dai = rtd->codec_dai;
  37         struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
  38         struct s3c_i2sv2_rate_calc div;
  39         unsigned int clk = 0;
  40         int ret = 0;
  41 
  42         switch (params_rate(params)) {
  43         case 8000:
  44         case 16000:
  45         case 48000:
  46         case 96000:
  47                 clk = 12288000;
  48                 break;
  49         case 11025:
  50         case 22050:
  51         case 44100:
  52                 clk = 11289600;
  53                 break;
  54         }
  55 
  56         s3c_i2sv2_iis_calc_rate(&div, NULL, params_rate(params),
  57                                 s3c_i2sv2_get_clock(cpu_dai));
  58 
  59         /* set the codec system clock for DAC and ADC */
  60         ret = snd_soc_dai_set_sysclk(codec_dai, WM8750_SYSCLK, clk,
  61                                      SND_SOC_CLOCK_IN);
  62         if (ret < 0)
  63                 return ret;
  64 
  65         ret = snd_soc_dai_set_clkdiv(cpu_dai, S3C2412_DIV_RCLK, div.fs_div);
  66         if (ret < 0)
  67                 return ret;
  68 
  69         ret = snd_soc_dai_set_clkdiv(cpu_dai, S3C2412_DIV_PRESCALER,
  70                                      div.clk_div - 1);
  71         if (ret < 0)
  72                 return ret;
  73 
  74         return 0;
  75 }
  76 
  77 static const struct snd_soc_ops jive_ops = {
  78         .hw_params      = jive_hw_params,
  79 };
  80 
  81 SND_SOC_DAILINK_DEFS(wm8750,
  82         DAILINK_COMP_ARRAY(COMP_CPU("s3c2412-i2s")),
  83         DAILINK_COMP_ARRAY(COMP_CODEC("wm8750.0-001a", "wm8750-hifi")),
  84         DAILINK_COMP_ARRAY(COMP_PLATFORM("s3c2412-i2s")));
  85 
  86 static struct snd_soc_dai_link jive_dai = {
  87         .name           = "wm8750",
  88         .stream_name    = "WM8750",
  89         .dai_fmt        = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
  90                           SND_SOC_DAIFMT_CBS_CFS,
  91         .ops            = &jive_ops,
  92         SND_SOC_DAILINK_REG(wm8750),
  93 };
  94 
  95 /* jive audio machine driver */
  96 static struct snd_soc_card snd_soc_machine_jive = {
  97         .name           = "Jive",
  98         .owner          = THIS_MODULE,
  99         .dai_link       = &jive_dai,
 100         .num_links      = 1,
 101 
 102         .dapm_widgets   = wm8750_dapm_widgets,
 103         .num_dapm_widgets = ARRAY_SIZE(wm8750_dapm_widgets),
 104         .dapm_routes    = audio_map,
 105         .num_dapm_routes = ARRAY_SIZE(audio_map),
 106         .fully_routed   = true,
 107 };
 108 
 109 static struct platform_device *jive_snd_device;
 110 
 111 static int __init jive_init(void)
 112 {
 113         int ret;
 114 
 115         if (!machine_is_jive())
 116                 return 0;
 117 
 118         printk("JIVE WM8750 Audio support\n");
 119 
 120         jive_snd_device = platform_device_alloc("soc-audio", -1);
 121         if (!jive_snd_device)
 122                 return -ENOMEM;
 123 
 124         platform_set_drvdata(jive_snd_device, &snd_soc_machine_jive);
 125         ret = platform_device_add(jive_snd_device);
 126 
 127         if (ret)
 128                 platform_device_put(jive_snd_device);
 129 
 130         return ret;
 131 }
 132 
 133 static void __exit jive_exit(void)
 134 {
 135         platform_device_unregister(jive_snd_device);
 136 }
 137 
 138 module_init(jive_init);
 139 module_exit(jive_exit);
 140 
 141 MODULE_AUTHOR("Ben Dooks <ben@simtec.co.uk>");
 142 MODULE_DESCRIPTION("ALSA SoC Jive Audio support");
 143 MODULE_LICENSE("GPL");