sound/soc/pxa/e740_wm9705.c

   1 // SPDX-License-Identifier: GPL-2.0-only
   2 /*
   3  * e740-wm9705.c  --  SoC audio for e740
   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.h>
  11
  12 #include <sound/core.h>
  13 #include <sound/pcm.h>
  14 #include <sound/soc.h>
  15
  16 #include <mach/audio.h>
  17 #include <mach/eseries-gpio.h>
  18
  19 #include <asm/mach-types.h>
  20
  21 #define E740_AUDIO_OUT 1
  22 #define E740_AUDIO_IN  2
  23
  24 static int e740_audio_power;
  25
  26 static void e740_sync_audio_power(int status)
  27 {
  28         gpio_set_value(GPIO_E740_WM9705_nAVDD2, !status);
  29         gpio_set_value(GPIO_E740_AMP_ON, (status & E740_AUDIO_OUT) ? 1 : 0);
  30         gpio_set_value(GPIO_E740_MIC_ON, (status & E740_AUDIO_IN) ? 1 : 0);
  31 }
  32
  33 static int e740_mic_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                 e740_audio_power |= E740_AUDIO_IN;
  38         else if (event & SND_SOC_DAPM_POST_PMD)
  39                 e740_audio_power &= ~E740_AUDIO_IN;
  40
  41         e740_sync_audio_power(e740_audio_power);
  42
  43         return 0;
  44 }
  45
  46 static int e740_output_amp_event(struct snd_soc_dapm_widget *w,
  47                                 struct snd_kcontrol *kcontrol, int event)
  48 {
  49         if (event & SND_SOC_DAPM_PRE_PMU)
  50                 e740_audio_power |= E740_AUDIO_OUT;
  51         else if (event & SND_SOC_DAPM_POST_PMD)
  52                 e740_audio_power &= ~E740_AUDIO_OUT;
  53
  54         e740_sync_audio_power(e740_audio_power);
  55
  56         return 0;
  57 }
  58
  59 static const struct snd_soc_dapm_widget e740_dapm_widgets[] = {
  60         SND_SOC_DAPM_HP("Headphone Jack", NULL),
  61         SND_SOC_DAPM_SPK("Speaker", NULL),
  62         SND_SOC_DAPM_MIC("Mic (Internal)", NULL),
  63         SND_SOC_DAPM_PGA_E("Output Amp", SND_SOC_NOPM, 0, 0, NULL, 0,
  64                         e740_output_amp_event, SND_SOC_DAPM_PRE_PMU |
  65                         SND_SOC_DAPM_POST_PMD),
  66         SND_SOC_DAPM_PGA_E("Mic Amp", SND_SOC_NOPM, 0, 0, NULL, 0,
  67                         e740_mic_amp_event, SND_SOC_DAPM_PRE_PMU |
  68                         SND_SOC_DAPM_POST_PMD),
  69 };
  70
  71 static const struct snd_soc_dapm_route audio_map[] = {
  72         {"Output Amp", NULL, "LOUT"},
  73         {"Output Amp", NULL, "ROUT"},
  74         {"Output Amp", NULL, "MONOOUT"},
  75
  76         {"Speaker", NULL, "Output Amp"},
  77         {"Headphone Jack", NULL, "Output Amp"},
  78
  79         {"MIC1", NULL, "Mic Amp"},
  80         {"Mic Amp", NULL, "Mic (Internal)"},
  81 };
  82
  83 SND_SOC_DAILINK_DEFS(ac97,
  84         DAILINK_COMP_ARRAY(COMP_CPU("pxa2xx-ac97")),
  85         DAILINK_COMP_ARRAY(COMP_CODEC("wm9705-codec", "wm9705-hifi")),
  86         DAILINK_COMP_ARRAY(COMP_PLATFORM("pxa-pcm-audio")));
  87
  88 SND_SOC_DAILINK_DEFS(ac97_aux,
  89         DAILINK_COMP_ARRAY(COMP_CPU("pxa2xx-ac97-aux")),
  90         DAILINK_COMP_ARRAY(COMP_CODEC("wm9705-codec", "wm9705-aux")),
  91         DAILINK_COMP_ARRAY(COMP_PLATFORM("pxa-pcm-audio")));
  92
  93 static struct snd_soc_dai_link e740_dai[] = {
  94         {
  95                 .name = "AC97",
  96                 .stream_name = "AC97 HiFi",
  97                 SND_SOC_DAILINK_REG(ac97),
  98         },
  99         {
 100                 .name = "AC97 Aux",
 101                 .stream_name = "AC97 Aux",
 102                 SND_SOC_DAILINK_REG(ac97_aux),
 103         },
 104 };
 105
 106 static struct snd_soc_card e740 = {
 107         .name = "Toshiba e740",
 108         .owner = THIS_MODULE,
 109         .dai_link = e740_dai,
 110         .num_links = ARRAY_SIZE(e740_dai),
 111
 112         .dapm_widgets = e740_dapm_widgets,
 113         .num_dapm_widgets = ARRAY_SIZE(e740_dapm_widgets),
 114         .dapm_routes = audio_map,
 115         .num_dapm_routes = ARRAY_SIZE(audio_map),
 116         .fully_routed = true,
 117 };
 118
 119 static struct gpio e740_audio_gpios[] = {
 120         { GPIO_E740_MIC_ON, GPIOF_OUT_INIT_LOW, "Mic amp" },
 121         { GPIO_E740_AMP_ON, GPIOF_OUT_INIT_LOW, "Output amp" },
 122         { GPIO_E740_WM9705_nAVDD2, GPIOF_OUT_INIT_HIGH, "Audio power" },
 123 };
 124
 125 static int e740_probe(struct platform_device *pdev)
 126 {
 127         struct snd_soc_card *card = &e740;
 128         int ret;
 129
 130         ret = gpio_request_array(e740_audio_gpios,
 131                                  ARRAY_SIZE(e740_audio_gpios));
 132         if (ret)
 133                 return ret;
 134
 135         card->dev = &pdev->dev;
 136
 137         ret = devm_snd_soc_register_card(&pdev->dev, card);
 138         if (ret) {
 139                 dev_err(&pdev->dev, "snd_soc_register_card() failed: %d\n",
 140                         ret);
 141                 gpio_free_array(e740_audio_gpios, ARRAY_SIZE(e740_audio_gpios));
 142         }
 143         return ret;
 144 }
 145
 146 static int e740_remove(struct platform_device *pdev)
 147 {
 148         gpio_free_array(e740_audio_gpios, ARRAY_SIZE(e740_audio_gpios));
 149         return 0;
 150 }
 151
 152 static struct platform_driver e740_driver = {
 153         .driver         = {
 154                 .name   = "e740-audio",
 155                 .pm     = &snd_soc_pm_ops,
 156         },
 157         .probe          = e740_probe,
 158         .remove         = e740_remove,
 159 };
 160
 161 module_platform_driver(e740_driver);
 162
 163 /* Module information */
 164 MODULE_AUTHOR("Ian Molton <spyro@f2s.com>");
 165 MODULE_DESCRIPTION("ALSA SoC driver for e740");
 166 MODULE_LICENSE("GPL v2");
 167 MODULE_ALIAS("platform:e740-audio");