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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e740_wm9705.c (4310B)

      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/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_output_amp, *gpiod_input_amp;
     21static struct gpio_desc *gpiod_audio_power;
     22
     23#define E740_AUDIO_OUT 1
     24#define E740_AUDIO_IN  2
     25
     26static int e740_audio_power;
     27
     28static void e740_sync_audio_power(int status)
     29{
     30	gpiod_set_value(gpiod_audio_power, !status);
     31	gpiod_set_value(gpiod_output_amp, (status & E740_AUDIO_OUT) ? 1 : 0);
     32	gpiod_set_value(gpiod_input_amp, (status & E740_AUDIO_IN) ? 1 : 0);
     33}
     34
     35static int e740_mic_amp_event(struct snd_soc_dapm_widget *w,
     36				struct snd_kcontrol *kcontrol, int event)
     37{
     38	if (event & SND_SOC_DAPM_PRE_PMU)
     39		e740_audio_power |= E740_AUDIO_IN;
     40	else if (event & SND_SOC_DAPM_POST_PMD)
     41		e740_audio_power &= ~E740_AUDIO_IN;
     42
     43	e740_sync_audio_power(e740_audio_power);
     44
     45	return 0;
     46}
     47
     48static int e740_output_amp_event(struct snd_soc_dapm_widget *w,
     49				struct snd_kcontrol *kcontrol, int event)
     50{
     51	if (event & SND_SOC_DAPM_PRE_PMU)
     52		e740_audio_power |= E740_AUDIO_OUT;
     53	else if (event & SND_SOC_DAPM_POST_PMD)
     54		e740_audio_power &= ~E740_AUDIO_OUT;
     55
     56	e740_sync_audio_power(e740_audio_power);
     57
     58	return 0;
     59}
     60
     61static const struct snd_soc_dapm_widget e740_dapm_widgets[] = {
     62	SND_SOC_DAPM_HP("Headphone Jack", NULL),
     63	SND_SOC_DAPM_SPK("Speaker", NULL),
     64	SND_SOC_DAPM_MIC("Mic (Internal)", NULL),
     65	SND_SOC_DAPM_PGA_E("Output Amp", SND_SOC_NOPM, 0, 0, NULL, 0,
     66			e740_output_amp_event, SND_SOC_DAPM_PRE_PMU |
     67			SND_SOC_DAPM_POST_PMD),
     68	SND_SOC_DAPM_PGA_E("Mic Amp", SND_SOC_NOPM, 0, 0, NULL, 0,
     69			e740_mic_amp_event, SND_SOC_DAPM_PRE_PMU |
     70			SND_SOC_DAPM_POST_PMD),
     71};
     72
     73static const struct snd_soc_dapm_route audio_map[] = {
     74	{"Output Amp", NULL, "LOUT"},
     75	{"Output Amp", NULL, "ROUT"},
     76	{"Output Amp", NULL, "MONOOUT"},
     77
     78	{"Speaker", NULL, "Output Amp"},
     79	{"Headphone Jack", NULL, "Output Amp"},
     80
     81	{"MIC1", NULL, "Mic Amp"},
     82	{"Mic Amp", NULL, "Mic (Internal)"},
     83};
     84
     85SND_SOC_DAILINK_DEFS(ac97,
     86	DAILINK_COMP_ARRAY(COMP_CPU("pxa2xx-ac97")),
     87	DAILINK_COMP_ARRAY(COMP_CODEC("wm9705-codec", "wm9705-hifi")),
     88	DAILINK_COMP_ARRAY(COMP_PLATFORM("pxa-pcm-audio")));
     89
     90SND_SOC_DAILINK_DEFS(ac97_aux,
     91	DAILINK_COMP_ARRAY(COMP_CPU("pxa2xx-ac97-aux")),
     92	DAILINK_COMP_ARRAY(COMP_CODEC("wm9705-codec", "wm9705-aux")),
     93	DAILINK_COMP_ARRAY(COMP_PLATFORM("pxa-pcm-audio")));
     94
     95static struct snd_soc_dai_link e740_dai[] = {
     96	{
     97		.name = "AC97",
     98		.stream_name = "AC97 HiFi",
     99		SND_SOC_DAILINK_REG(ac97),
    100	},
    101	{
    102		.name = "AC97 Aux",
    103		.stream_name = "AC97 Aux",
    104		SND_SOC_DAILINK_REG(ac97_aux),
    105	},
    106};
    107
    108static struct snd_soc_card e740 = {
    109	.name = "Toshiba e740",
    110	.owner = THIS_MODULE,
    111	.dai_link = e740_dai,
    112	.num_links = ARRAY_SIZE(e740_dai),
    113
    114	.dapm_widgets = e740_dapm_widgets,
    115	.num_dapm_widgets = ARRAY_SIZE(e740_dapm_widgets),
    116	.dapm_routes = audio_map,
    117	.num_dapm_routes = ARRAY_SIZE(audio_map),
    118	.fully_routed = true,
    119};
    120
    121static int e740_probe(struct platform_device *pdev)
    122{
    123	struct snd_soc_card *card = &e740;
    124	int ret;
    125
    126	gpiod_input_amp  = devm_gpiod_get(&pdev->dev, "Mic amp", GPIOD_OUT_LOW);
    127	ret = PTR_ERR_OR_ZERO(gpiod_input_amp);
    128	if (ret)
    129		return ret;
    130	gpiod_output_amp  = devm_gpiod_get(&pdev->dev, "Output amp", GPIOD_OUT_LOW);
    131	ret = PTR_ERR_OR_ZERO(gpiod_output_amp);
    132	if (ret)
    133		return ret;
    134	gpiod_audio_power = devm_gpiod_get(&pdev->dev, "Audio power", GPIOD_OUT_HIGH);
    135	ret = PTR_ERR_OR_ZERO(gpiod_audio_power);
    136	if (ret)
    137		return ret;
    138
    139	card->dev = &pdev->dev;
    140
    141	ret = devm_snd_soc_register_card(&pdev->dev, card);
    142	if (ret)
    143		dev_err(&pdev->dev, "snd_soc_register_card() failed: %d\n",
    144			ret);
    145	return ret;
    146}
    147
    148static int e740_remove(struct platform_device *pdev)
    149{
    150	return 0;
    151}
    152
    153static struct platform_driver e740_driver = {
    154	.driver		= {
    155		.name	= "e740-audio",
    156		.pm     = &snd_soc_pm_ops,
    157	},
    158	.probe		= e740_probe,
    159	.remove		= e740_remove,
    160};
    161
    162module_platform_driver(e740_driver);
    163
    164/* Module information */
    165MODULE_AUTHOR("Ian Molton <spyro@f2s.com>");
    166MODULE_DESCRIPTION("ALSA SoC driver for e740");
    167MODULE_LICENSE("GPL v2");
    168MODULE_ALIAS("platform:e740-audio");