soc/pxa/e750_wm9705.c

0001 // SPDX-License-Identifier: GPL-2.0-only
0002 /*
0003  * e750-wm9705.c  --  SoC audio for e750
0004  *
0005  * Copyright 2007 (c) Ian Molton <spyro@f2s.com>
0006  */
0007
0008 #include <linux/module.h>
0009 #include <linux/moduleparam.h>
0010 #include <linux/gpio/consumer.h>
0011
0012 #include <sound/core.h>
0013 #include <sound/pcm.h>
0014 #include <sound/soc.h>
0015
0016 #include <linux/platform_data/asoc-pxa.h>
0017
0018 #include <asm/mach-types.h>
0019
0020 static struct gpio_desc *gpiod_spk_amp, *gpiod_hp_amp;
0021
0022 static int e750_spk_amp_event(struct snd_soc_dapm_widget *w,
0023                 struct snd_kcontrol *kcontrol, int event)
0024 {
0025     if (event & SND_SOC_DAPM_PRE_PMU)
0026         gpiod_set_value(gpiod_spk_amp, 1);
0027     else if (event & SND_SOC_DAPM_POST_PMD)
0028         gpiod_set_value(gpiod_spk_amp, 0);
0029
0030     return 0;
0031 }
0032
0033 static int e750_hp_amp_event(struct snd_soc_dapm_widget *w,
0034                 struct snd_kcontrol *kcontrol, int event)
0035 {
0036     if (event & SND_SOC_DAPM_PRE_PMU)
0037         gpiod_set_value(gpiod_hp_amp, 1);
0038     else if (event & SND_SOC_DAPM_POST_PMD)
0039         gpiod_set_value(gpiod_hp_amp, 0);
0040
0041     return 0;
0042 }
0043
0044 static const struct snd_soc_dapm_widget e750_dapm_widgets[] = {
0045     SND_SOC_DAPM_HP("Headphone Jack", NULL),
0046     SND_SOC_DAPM_SPK("Speaker", NULL),
0047     SND_SOC_DAPM_MIC("Mic (Internal)", NULL),
0048     SND_SOC_DAPM_PGA_E("Headphone Amp", SND_SOC_NOPM, 0, 0, NULL, 0,
0049             e750_hp_amp_event, SND_SOC_DAPM_PRE_PMU |
0050             SND_SOC_DAPM_POST_PMD),
0051     SND_SOC_DAPM_PGA_E("Speaker Amp", SND_SOC_NOPM, 0, 0, NULL, 0,
0052             e750_spk_amp_event, SND_SOC_DAPM_PRE_PMU |
0053             SND_SOC_DAPM_POST_PMD),
0054 };
0055
0056 static const struct snd_soc_dapm_route audio_map[] = {
0057     {"Headphone Amp", NULL, "HPOUTL"},
0058     {"Headphone Amp", NULL, "HPOUTR"},
0059     {"Headphone Jack", NULL, "Headphone Amp"},
0060
0061     {"Speaker Amp", NULL, "MONOOUT"},
0062     {"Speaker", NULL, "Speaker Amp"},
0063
0064     {"MIC1", NULL, "Mic (Internal)"},
0065 };
0066
0067 SND_SOC_DAILINK_DEFS(ac97,
0068     DAILINK_COMP_ARRAY(COMP_CPU("pxa2xx-ac97")),
0069     DAILINK_COMP_ARRAY(COMP_CODEC("wm9705-codec", "wm9705-hifi")),
0070     DAILINK_COMP_ARRAY(COMP_PLATFORM("pxa-pcm-audio")));
0071
0072 SND_SOC_DAILINK_DEFS(ac97_aux,
0073     DAILINK_COMP_ARRAY(COMP_CPU("pxa2xx-ac97-aux")),
0074     DAILINK_COMP_ARRAY(COMP_CODEC("wm9705-codec", "wm9705-aux")),
0075     DAILINK_COMP_ARRAY(COMP_PLATFORM("pxa-pcm-audio")));
0076
0077 static struct snd_soc_dai_link e750_dai[] = {
0078     {
0079         .name = "AC97",
0080         .stream_name = "AC97 HiFi",
0081         SND_SOC_DAILINK_REG(ac97),
0082         /* use ops to check startup state */
0083     },
0084     {
0085         .name = "AC97 Aux",
0086         .stream_name = "AC97 Aux",
0087         SND_SOC_DAILINK_REG(ac97_aux),
0088     },
0089 };
0090
0091 static struct snd_soc_card e750 = {
0092     .name = "Toshiba e750",
0093     .owner = THIS_MODULE,
0094     .dai_link = e750_dai,
0095     .num_links = ARRAY_SIZE(e750_dai),
0096
0097     .dapm_widgets = e750_dapm_widgets,
0098     .num_dapm_widgets = ARRAY_SIZE(e750_dapm_widgets),
0099     .dapm_routes = audio_map,
0100     .num_dapm_routes = ARRAY_SIZE(audio_map),
0101     .fully_routed = true,
0102 };
0103
0104 static int e750_probe(struct platform_device *pdev)
0105 {
0106     struct snd_soc_card *card = &e750;
0107     int ret;
0108
0109     gpiod_hp_amp  = devm_gpiod_get(&pdev->dev, "Headphone amp", GPIOD_OUT_LOW);
0110     ret = PTR_ERR_OR_ZERO(gpiod_hp_amp);
0111     if (ret)
0112         return ret;
0113     gpiod_spk_amp  = devm_gpiod_get(&pdev->dev, "Speaker amp", GPIOD_OUT_LOW);
0114     ret = PTR_ERR_OR_ZERO(gpiod_spk_amp);
0115     if (ret)
0116         return ret;
0117
0118     card->dev = &pdev->dev;
0119
0120     ret = devm_snd_soc_register_card(&pdev->dev, card);
0121     if (ret)
0122         dev_err(&pdev->dev, "snd_soc_register_card() failed: %d\n",
0123             ret);
0124     return ret;
0125 }
0126
0127 static int e750_remove(struct platform_device *pdev)
0128 {
0129     return 0;
0130 }
0131
0132 static struct platform_driver e750_driver = {
0133     .driver     = {
0134         .name   = "e750-audio",
0135         .pm     = &snd_soc_pm_ops,
0136     },
0137     .probe      = e750_probe,
0138     .remove     = e750_remove,
0139 };
0140
0141 module_platform_driver(e750_driver);
0142
0143 /* Module information */
0144 MODULE_AUTHOR("Ian Molton <spyro@f2s.com>");
0145 MODULE_DESCRIPTION("ALSA SoC driver for e750");
0146 MODULE_LICENSE("GPL v2");
0147 MODULE_ALIAS("platform:e750-audio");