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Linux/sound/soc/pxa/brownstone.c

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  1 // SPDX-License-Identifier: GPL-2.0-or-later
  2 /*
  3  * linux/sound/soc/pxa/brownstone.c
  4  *
  5  * Copyright (C) 2011 Marvell International Ltd.
  6  */
  7 
  8 #include <linux/module.h>
  9 #include <sound/core.h>
 10 #include <sound/pcm.h>
 11 #include <sound/soc.h>
 12 #include <sound/jack.h>
 13 
 14 #include "../codecs/wm8994.h"
 15 #include "mmp-sspa.h"
 16 
 17 static const struct snd_kcontrol_new brownstone_dapm_control[] = {
 18         SOC_DAPM_PIN_SWITCH("Ext Spk"),
 19 };
 20 
 21 static const struct snd_soc_dapm_widget brownstone_dapm_widgets[] = {
 22         SND_SOC_DAPM_SPK("Ext Spk", NULL),
 23         SND_SOC_DAPM_HP("Headset Stereophone", NULL),
 24         SND_SOC_DAPM_MIC("Headset Mic", NULL),
 25         SND_SOC_DAPM_MIC("Main Mic", NULL),
 26 };
 27 
 28 static const struct snd_soc_dapm_route brownstone_audio_map[] = {
 29         {"Ext Spk", NULL, "SPKOUTLP"},
 30         {"Ext Spk", NULL, "SPKOUTLN"},
 31         {"Ext Spk", NULL, "SPKOUTRP"},
 32         {"Ext Spk", NULL, "SPKOUTRN"},
 33 
 34         {"Headset Stereophone", NULL, "HPOUT1L"},
 35         {"Headset Stereophone", NULL, "HPOUT1R"},
 36 
 37         {"IN1RN", NULL, "Headset Mic"},
 38 
 39         {"DMIC1DAT", NULL, "MICBIAS1"},
 40         {"MICBIAS1", NULL, "Main Mic"},
 41 };
 42 
 43 static int brownstone_wm8994_hw_params(struct snd_pcm_substream *substream,
 44                                        struct snd_pcm_hw_params *params)
 45 {
 46         struct snd_soc_pcm_runtime *rtd = substream->private_data;
 47         struct snd_soc_dai *codec_dai = rtd->codec_dai;
 48         struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
 49         int freq_out, sspa_mclk, sysclk;
 50 
 51         if (params_rate(params) > 11025) {
 52                 freq_out  = params_rate(params) * 512;
 53                 sysclk    = params_rate(params) * 256;
 54                 sspa_mclk = params_rate(params) * 64;
 55         } else {
 56                 freq_out  = params_rate(params) * 1024;
 57                 sysclk    = params_rate(params) * 512;
 58                 sspa_mclk = params_rate(params) * 64;
 59         }
 60 
 61         snd_soc_dai_set_sysclk(cpu_dai, MMP_SSPA_CLK_AUDIO, freq_out, 0);
 62         snd_soc_dai_set_pll(cpu_dai, MMP_SYSCLK, 0, freq_out, sysclk);
 63         snd_soc_dai_set_pll(cpu_dai, MMP_SSPA_CLK, 0, freq_out, sspa_mclk);
 64 
 65         /* set wm8994 sysclk */
 66         snd_soc_dai_set_sysclk(codec_dai, WM8994_SYSCLK_MCLK1, sysclk, 0);
 67 
 68         return 0;
 69 }
 70 
 71 /* machine stream operations */
 72 static const struct snd_soc_ops brownstone_ops = {
 73         .hw_params = brownstone_wm8994_hw_params,
 74 };
 75 
 76 SND_SOC_DAILINK_DEFS(wm8994,
 77         DAILINK_COMP_ARRAY(COMP_CPU("mmp-sspa-dai.0")),
 78         DAILINK_COMP_ARRAY(COMP_CODEC("wm8994-codec", "wm8994-aif1")),
 79         DAILINK_COMP_ARRAY(COMP_PLATFORM("mmp-pcm-audio")));
 80 
 81 static struct snd_soc_dai_link brownstone_wm8994_dai[] = {
 82 {
 83         .name           = "WM8994",
 84         .stream_name    = "WM8994 HiFi",
 85         .dai_fmt        = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
 86                                 SND_SOC_DAIFMT_CBS_CFS,
 87         .ops            = &brownstone_ops,
 88         SND_SOC_DAILINK_REG(wm8994),
 89 },
 90 };
 91 
 92 /* audio machine driver */
 93 static struct snd_soc_card brownstone = {
 94         .name         = "brownstone",
 95         .owner        = THIS_MODULE,
 96         .dai_link     = brownstone_wm8994_dai,
 97         .num_links    = ARRAY_SIZE(brownstone_wm8994_dai),
 98 
 99         .controls = brownstone_dapm_control,
100         .num_controls = ARRAY_SIZE(brownstone_dapm_control),
101         .dapm_widgets = brownstone_dapm_widgets,
102         .num_dapm_widgets = ARRAY_SIZE(brownstone_dapm_widgets),
103         .dapm_routes = brownstone_audio_map,
104         .num_dapm_routes = ARRAY_SIZE(brownstone_audio_map),
105         .fully_routed = true,
106 };
107 
108 static int brownstone_probe(struct platform_device *pdev)
109 {
110         int ret;
111 
112         brownstone.dev = &pdev->dev;
113         ret = devm_snd_soc_register_card(&pdev->dev, &brownstone);
114         if (ret)
115                 dev_err(&pdev->dev, "snd_soc_register_card() failed: %d\n",
116                                 ret);
117         return ret;
118 }
119 
120 static struct platform_driver mmp_driver = {
121         .driver         = {
122                 .name   = "brownstone-audio",
123                 .pm     = &snd_soc_pm_ops,
124         },
125         .probe          = brownstone_probe,
126 };
127 
128 module_platform_driver(mmp_driver);
129 
130 MODULE_AUTHOR("Leo Yan <leoy@marvell.com>");
131 MODULE_DESCRIPTION("ALSA SoC Brownstone");
132 MODULE_LICENSE("GPL");
133 MODULE_ALIAS("platform:brownstone-audio");
134 

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