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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e750_wm9705.c (3720B)

      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
     20static struct gpio_desc *gpiod_spk_amp, *gpiod_hp_amp;
     21
     22static 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
     33static 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
     44static 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
     56static 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
     67SND_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
     72SND_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
     77static 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
     91static 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
    104static 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
    127static int e750_remove(struct platform_device *pdev)
    128{
    129	return 0;
    130}
    131
    132static 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
    141module_platform_driver(e750_driver);
    142
    143/* Module information */
    144MODULE_AUTHOR("Ian Molton <spyro@f2s.com>");
    145MODULE_DESCRIPTION("ALSA SoC driver for e750");
    146MODULE_LICENSE("GPL v2");
    147MODULE_ALIAS("platform:e750-audio");