cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
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e800_wm9712.c (3742B)

      1// SPDX-License-Identifier: GPL-2.0-only
      2/*
      3 * e800-wm9712.c  --  SoC audio for e800
      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 <asm/mach-types.h>
     17#include <linux/platform_data/asoc-pxa.h>
     18
     19static struct gpio_desc *gpiod_spk_amp, *gpiod_hp_amp;
     20
     21static int e800_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		gpiod_set_value(gpiod_spk_amp, 1);
     26	else if (event & SND_SOC_DAPM_POST_PMD)
     27		gpiod_set_value(gpiod_spk_amp, 0);
     28
     29	return 0;
     30}
     31
     32static int e800_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		gpiod_set_value(gpiod_hp_amp, 1);
     37	else if (event & SND_SOC_DAPM_POST_PMD)
     38		gpiod_set_value(gpiod_hp_amp, 0);
     39
     40	return 0;
     41}
     42
     43static const struct snd_soc_dapm_widget e800_dapm_widgets[] = {
     44	SND_SOC_DAPM_HP("Headphone Jack", NULL),
     45	SND_SOC_DAPM_MIC("Mic (Internal1)", NULL),
     46	SND_SOC_DAPM_MIC("Mic (Internal2)", NULL),
     47	SND_SOC_DAPM_SPK("Speaker", NULL),
     48	SND_SOC_DAPM_PGA_E("Headphone Amp", SND_SOC_NOPM, 0, 0, NULL, 0,
     49			e800_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			e800_spk_amp_event, SND_SOC_DAPM_PRE_PMU |
     53			SND_SOC_DAPM_POST_PMD),
     54};
     55
     56static const struct snd_soc_dapm_route audio_map[] = {
     57	{"Headphone Jack", NULL, "HPOUTL"},
     58	{"Headphone Jack", NULL, "HPOUTR"},
     59	{"Headphone Jack", NULL, "Headphone Amp"},
     60
     61	{"Speaker Amp", NULL, "MONOOUT"},
     62	{"Speaker", NULL, "Speaker Amp"},
     63
     64	{"MIC1", NULL, "Mic (Internal1)"},
     65	{"MIC2", NULL, "Mic (Internal2)"},
     66};
     67
     68
     69SND_SOC_DAILINK_DEFS(ac97,
     70	DAILINK_COMP_ARRAY(COMP_CPU("pxa2xx-ac97")),
     71	DAILINK_COMP_ARRAY(COMP_CODEC("wm9712-codec", "wm9712-hifi")),
     72	DAILINK_COMP_ARRAY(COMP_PLATFORM("pxa-pcm-audio")));
     73
     74SND_SOC_DAILINK_DEFS(ac97_aux,
     75	DAILINK_COMP_ARRAY(COMP_CPU("pxa2xx-ac97-aux")),
     76	DAILINK_COMP_ARRAY(COMP_CODEC("wm9712-codec", "wm9712-aux")),
     77	DAILINK_COMP_ARRAY(COMP_PLATFORM("pxa-pcm-audio")));
     78
     79static struct snd_soc_dai_link e800_dai[] = {
     80	{
     81		.name = "AC97",
     82		.stream_name = "AC97 HiFi",
     83		SND_SOC_DAILINK_REG(ac97),
     84	},
     85	{
     86		.name = "AC97 Aux",
     87		.stream_name = "AC97 Aux",
     88		SND_SOC_DAILINK_REG(ac97_aux),
     89	},
     90};
     91
     92static struct snd_soc_card e800 = {
     93	.name = "Toshiba e800",
     94	.owner = THIS_MODULE,
     95	.dai_link = e800_dai,
     96	.num_links = ARRAY_SIZE(e800_dai),
     97
     98	.dapm_widgets = e800_dapm_widgets,
     99	.num_dapm_widgets = ARRAY_SIZE(e800_dapm_widgets),
    100	.dapm_routes = audio_map,
    101	.num_dapm_routes = ARRAY_SIZE(audio_map),
    102};
    103
    104static int e800_probe(struct platform_device *pdev)
    105{
    106	struct snd_soc_card *card = &e800;
    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
    127static int e800_remove(struct platform_device *pdev)
    128{
    129	return 0;
    130}
    131
    132static struct platform_driver e800_driver = {
    133	.driver		= {
    134		.name	= "e800-audio",
    135		.pm     = &snd_soc_pm_ops,
    136	},
    137	.probe		= e800_probe,
    138	.remove		= e800_remove,
    139};
    140
    141module_platform_driver(e800_driver);
    142
    143/* Module information */
    144MODULE_AUTHOR("Ian Molton <spyro@f2s.com>");
    145MODULE_DESCRIPTION("ALSA SoC driver for e800");
    146MODULE_LICENSE("GPL v2");
    147MODULE_ALIAS("platform:e800-audio");