LXR linux/sound/soc/pxa/e750

   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.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
  21static int e750_spk_amp_event(struct snd_soc_dapm_widget *w,
  22                                struct snd_kcontrol *kcontrol, int event)
  23{
  24        if (event & SND_SOC_DAPM_PRE_PMU)
  25                gpio_set_value(GPIO_E750_SPK_AMP_OFF, 0);
  26        else if (event & SND_SOC_DAPM_POST_PMD)
  27                gpio_set_value(GPIO_E750_SPK_AMP_OFF, 1);
  28
  29        return 0;
  30}
  31
  32static int e750_hp_amp_event(struct snd_soc_dapm_widget *w,
  33                                struct snd_kcontrol *kcontrol, int event)
  34{
  35        if (event & SND_SOC_DAPM_PRE_PMU)
  36                gpio_set_value(GPIO_E750_HP_AMP_OFF, 0);
  37        else if (event & SND_SOC_DAPM_POST_PMD)
  38                gpio_set_value(GPIO_E750_HP_AMP_OFF, 1);
  39
  40        return 0;
  41}
  42
  43static const struct snd_soc_dapm_widget e750_dapm_widgets[] = {
  44        SND_SOC_DAPM_HP("Headphone Jack", NULL),
  45        SND_SOC_DAPM_SPK("Speaker", NULL),
  46        SND_SOC_DAPM_MIC("Mic (Internal)", NULL),
  47        SND_SOC_DAPM_PGA_E("Headphone Amp", SND_SOC_NOPM, 0, 0, NULL, 0,
  48                        e750_hp_amp_event, SND_SOC_DAPM_PRE_PMU |
  49                        SND_SOC_DAPM_POST_PMD),
  50        SND_SOC_DAPM_PGA_E("Speaker Amp", SND_SOC_NOPM, 0, 0, NULL, 0,
  51                        e750_spk_amp_event, SND_SOC_DAPM_PRE_PMU |
  52                        SND_SOC_DAPM_POST_PMD),
  53};
  54
  55static const struct snd_soc_dapm_route audio_map[] = {
  56        {"Headphone Amp", NULL, "HPOUTL"},
  57        {"Headphone Amp", NULL, "HPOUTR"},
  58        {"Headphone Jack", NULL, "Headphone Amp"},
  59
  60        {"Speaker Amp", NULL, "MONOOUT"},
  61        {"Speaker", NULL, "Speaker Amp"},
  62
  63        {"MIC1", NULL, "Mic (Internal)"},
  64};
  65
  66SND_SOC_DAILINK_DEFS(ac97,
  67        DAILINK_COMP_ARRAY(COMP_CPU("pxa2xx-ac97")),
  68        DAILINK_COMP_ARRAY(COMP_CODEC("wm9705-codec", "wm9705-hifi")),
  69        DAILINK_COMP_ARRAY(COMP_PLATFORM("pxa-pcm-audio")));
  70
  71SND_SOC_DAILINK_DEFS(ac97_aux,
  72        DAILINK_COMP_ARRAY(COMP_CPU("pxa2xx-ac97-aux")),
  73        DAILINK_COMP_ARRAY(COMP_CODEC("wm9705-codec", "wm9705-aux")),
  74        DAILINK_COMP_ARRAY(COMP_PLATFORM("pxa-pcm-audio")));
  75
  76static struct snd_soc_dai_link e750_dai[] = {
  77        {
  78                .name = "AC97",
  79                .stream_name = "AC97 HiFi",
  80                SND_SOC_DAILINK_REG(ac97),
  81                /* use ops to check startup state */
  82        },
  83        {
  84                .name = "AC97 Aux",
  85                .stream_name = "AC97 Aux",
  86                SND_SOC_DAILINK_REG(ac97_aux),
  87        },
  88};
  89
  90static struct snd_soc_card e750 = {
  91        .name = "Toshiba e750",
  92        .owner = THIS_MODULE,
  93        .dai_link = e750_dai,
  94        .num_links = ARRAY_SIZE(e750_dai),
  95
  96        .dapm_widgets = e750_dapm_widgets,
  97        .num_dapm_widgets = ARRAY_SIZE(e750_dapm_widgets),
  98        .dapm_routes = audio_map,
  99        .num_dapm_routes = ARRAY_SIZE(audio_map),
 100        .fully_routed = true,
 101};
 102
 103static struct gpio e750_audio_gpios[] = {
 104        { GPIO_E750_HP_AMP_OFF, GPIOF_OUT_INIT_HIGH, "Headphone amp" },
 105        { GPIO_E750_SPK_AMP_OFF, GPIOF_OUT_INIT_HIGH, "Speaker amp" },
 106};
 107
 108static int e750_probe(struct platform_device *pdev)
 109{
 110        struct snd_soc_card *card = &e750;
 111        int ret;
 112
 113        ret = gpio_request_array(e750_audio_gpios,
 114                                 ARRAY_SIZE(e750_audio_gpios));
 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                gpio_free_array(e750_audio_gpios, ARRAY_SIZE(e750_audio_gpios));
 125        }
 126        return ret;
 127}
 128
 129static int e750_remove(struct platform_device *pdev)
 130{
 131        gpio_free_array(e750_audio_gpios, ARRAY_SIZE(e750_audio_gpios));
 132        return 0;
 133}
 134
 135static struct platform_driver e750_driver = {
 136        .driver         = {
 137                .name   = "e750-audio",
 138                .pm     = &snd_soc_pm_ops,
 139        },
 140        .probe          = e750_probe,
 141        .remove         = e750_remove,
 142};
 143
 144module_platform_driver(e750_driver);
 145
 146/* Module information */
 147MODULE_AUTHOR("Ian Molton <spyro@f2s.com>");
 148MODULE_DESCRIPTION("ALSA SoC driver for e750");
 149MODULE_LICENSE("GPL v2");
 150MODULE_ALIAS("platform:e750-audio");
 151