sound/soc/pxa/e750_wm9705.c

   1 // SPDX-License-Identifier: GPL-2.0-only
   2 /*
   3  * e750-wm9705.c  --  SoC audio for e750
   4  *
   5  * Copyright 2007 (c) Ian Molton <spyro@f2s.com>
   6  */
   7
   8 #include <linux/module.h>
   9 #include <linux/moduleparam.h>
  10 #include <linux/gpio/consumer.h>
  11
  12 #include <sound/core.h>
  13 #include <sound/pcm.h>
  14 #include <sound/soc.h>
  15
  16 #include <linux/platform_data/asoc-pxa.h>
  17
  18 #include <asm/mach-types.h>
  19
  20 static struct gpio_desc *gpiod_spk_amp, *gpiod_hp_amp;
  21
  22 static int e750_spk_amp_event(struct snd_soc_dapm_widget *w,
  23                                 struct snd_kcontrol *kcontrol, int event)
  24 {
  25         if (event & SND_SOC_DAPM_PRE_PMU)
  26                 gpiod_set_value(gpiod_spk_amp, 1);
  27         else if (event & SND_SOC_DAPM_POST_PMD)
  28                 gpiod_set_value(gpiod_spk_amp, 0);
  29
  30         return 0;
  31 }
  32
  33 static int e750_hp_amp_event(struct snd_soc_dapm_widget *w,
  34                                 struct snd_kcontrol *kcontrol, int event)
  35 {
  36         if (event & SND_SOC_DAPM_PRE_PMU)
  37                 gpiod_set_value(gpiod_hp_amp, 1);
  38         else if (event & SND_SOC_DAPM_POST_PMD)
  39                 gpiod_set_value(gpiod_hp_amp, 0);
  40
  41         return 0;
  42 }
  43
  44 static const struct snd_soc_dapm_widget e750_dapm_widgets[] = {
  45         SND_SOC_DAPM_HP("Headphone Jack", NULL),
  46         SND_SOC_DAPM_SPK("Speaker", NULL),
  47         SND_SOC_DAPM_MIC("Mic (Internal)", NULL),
  48         SND_SOC_DAPM_PGA_E("Headphone Amp", SND_SOC_NOPM, 0, 0, NULL, 0,
  49                         e750_hp_amp_event, SND_SOC_DAPM_PRE_PMU |
  50                         SND_SOC_DAPM_POST_PMD),
  51         SND_SOC_DAPM_PGA_E("Speaker Amp", SND_SOC_NOPM, 0, 0, NULL, 0,
  52                         e750_spk_amp_event, SND_SOC_DAPM_PRE_PMU |
  53                         SND_SOC_DAPM_POST_PMD),
  54 };
  55
  56 static const struct snd_soc_dapm_route audio_map[] = {
  57         {"Headphone Amp", NULL, "HPOUTL"},
  58         {"Headphone Amp", NULL, "HPOUTR"},
  59         {"Headphone Jack", NULL, "Headphone Amp"},
  60
  61         {"Speaker Amp", NULL, "MONOOUT"},
  62         {"Speaker", NULL, "Speaker Amp"},
  63
  64         {"MIC1", NULL, "Mic (Internal)"},
  65 };
  66
  67 SND_SOC_DAILINK_DEFS(ac97,
  68         DAILINK_COMP_ARRAY(COMP_CPU("pxa2xx-ac97")),
  69         DAILINK_COMP_ARRAY(COMP_CODEC("wm9705-codec", "wm9705-hifi")),
  70         DAILINK_COMP_ARRAY(COMP_PLATFORM("pxa-pcm-audio")));
  71
  72 SND_SOC_DAILINK_DEFS(ac97_aux,
  73         DAILINK_COMP_ARRAY(COMP_CPU("pxa2xx-ac97-aux")),
  74         DAILINK_COMP_ARRAY(COMP_CODEC("wm9705-codec", "wm9705-aux")),
  75         DAILINK_COMP_ARRAY(COMP_PLATFORM("pxa-pcm-audio")));
  76
  77 static struct snd_soc_dai_link e750_dai[] = {
  78         {
  79                 .name = "AC97",
  80                 .stream_name = "AC97 HiFi",
  81                 SND_SOC_DAILINK_REG(ac97),
  82                 /* use ops to check startup state */
  83         },
  84         {
  85                 .name = "AC97 Aux",
  86                 .stream_name = "AC97 Aux",
  87                 SND_SOC_DAILINK_REG(ac97_aux),
  88         },
  89 };
  90
  91 static struct snd_soc_card e750 = {
  92         .name = "Toshiba e750",
  93         .owner = THIS_MODULE,
  94         .dai_link = e750_dai,
  95         .num_links = ARRAY_SIZE(e750_dai),
  96
  97         .dapm_widgets = e750_dapm_widgets,
  98         .num_dapm_widgets = ARRAY_SIZE(e750_dapm_widgets),
  99         .dapm_routes = audio_map,
 100         .num_dapm_routes = ARRAY_SIZE(audio_map),
 101         .fully_routed = true,
 102 };
 103
 104 static int e750_probe(struct platform_device *pdev)
 105 {
 106         struct snd_soc_card *card = &e750;
 107         int ret;
 108
 109         gpiod_hp_amp  = devm_gpiod_get(&pdev->dev, "Headphone amp", GPIOD_OUT_LOW);
 110         ret = PTR_ERR_OR_ZERO(gpiod_hp_amp);
 111         if (ret)
 112                 return ret;
 113         gpiod_spk_amp  = devm_gpiod_get(&pdev->dev, "Speaker amp", GPIOD_OUT_LOW);
 114         ret = PTR_ERR_OR_ZERO(gpiod_spk_amp);
 115         if (ret)
 116                 return ret;
 117
 118         card->dev = &pdev->dev;
 119
 120         ret = devm_snd_soc_register_card(&pdev->dev, card);
 121         if (ret)
 122                 dev_err(&pdev->dev, "snd_soc_register_card() failed: %d\n",
 123                         ret);
 124         return ret;
 125 }
 126
 127 static int e750_remove(struct platform_device *pdev)
 128 {
 129         return 0;
 130 }
 131
 132 static struct platform_driver e750_driver = {
 133         .driver         = {
 134                 .name   = "e750-audio",
 135                 .pm     = &snd_soc_pm_ops,
 136         },
 137         .probe          = e750_probe,
 138         .remove         = e750_remove,
 139 };
 140
 141 module_platform_driver(e750_driver);
 142
 143 /* Module information */
 144 MODULE_AUTHOR("Ian Molton <spyro@f2s.com>");
 145 MODULE_DESCRIPTION("ALSA SoC driver for e750");
 146 MODULE_LICENSE("GPL v2");
 147 MODULE_ALIAS("platform:e750-audio");