linux/sound/soc/codecs/pcm3008.c
Thomas Gleixner 2874c5fd28 treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152
Based on 1 normalized pattern(s):

  this program is free software you can redistribute it and or modify
  it under the terms of the gnu general public license as published by
  the free software foundation either version 2 of the license or at
  your option any later version

extracted by the scancode license scanner the SPDX license identifier

  GPL-2.0-or-later

has been chosen to replace the boilerplate/reference in 3029 file(s).

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Allison Randal <allison@lohutok.net>
Cc: linux-spdx@vger.kernel.org
Link: https://lkml.kernel.org/r/20190527070032.746973796@linutronix.de
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-05-30 11:26:32 -07:00

165 lines
4.2 KiB
C

// SPDX-License-Identifier: GPL-2.0-or-later
/*
* ALSA Soc PCM3008 codec support
*
* Author: Hugo Villeneuve
* Copyright (C) 2008 Lyrtech inc
*
* Based on AC97 Soc codec, original copyright follow:
* Copyright 2005 Wolfson Microelectronics PLC.
*
* Generic PCM3008 support.
*/
#include <linux/init.h>
#include <linux/kernel.h>
#include <linux/device.h>
#include <linux/gpio.h>
#include <linux/slab.h>
#include <linux/module.h>
#include <sound/core.h>
#include <sound/pcm.h>
#include <sound/initval.h>
#include <sound/soc.h>
#include "pcm3008.h"
static int pcm3008_dac_ev(struct snd_soc_dapm_widget *w,
struct snd_kcontrol *kcontrol,
int event)
{
struct snd_soc_component *component = snd_soc_dapm_to_component(w->dapm);
struct pcm3008_setup_data *setup = component->dev->platform_data;
gpio_set_value_cansleep(setup->pdda_pin,
SND_SOC_DAPM_EVENT_ON(event));
return 0;
}
static int pcm3008_adc_ev(struct snd_soc_dapm_widget *w,
struct snd_kcontrol *kcontrol,
int event)
{
struct snd_soc_component *component = snd_soc_dapm_to_component(w->dapm);
struct pcm3008_setup_data *setup = component->dev->platform_data;
gpio_set_value_cansleep(setup->pdad_pin,
SND_SOC_DAPM_EVENT_ON(event));
return 0;
}
static const struct snd_soc_dapm_widget pcm3008_dapm_widgets[] = {
SND_SOC_DAPM_INPUT("VINL"),
SND_SOC_DAPM_INPUT("VINR"),
SND_SOC_DAPM_DAC_E("DAC", NULL, SND_SOC_NOPM, 0, 0, pcm3008_dac_ev,
SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMD),
SND_SOC_DAPM_ADC_E("ADC", NULL, SND_SOC_NOPM, 0, 0, pcm3008_adc_ev,
SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMD),
SND_SOC_DAPM_OUTPUT("VOUTL"),
SND_SOC_DAPM_OUTPUT("VOUTR"),
};
static const struct snd_soc_dapm_route pcm3008_dapm_routes[] = {
{ "PCM3008 Capture", NULL, "ADC" },
{ "ADC", NULL, "VINL" },
{ "ADC", NULL, "VINR" },
{ "DAC", NULL, "PCM3008 Playback" },
{ "VOUTL", NULL, "DAC" },
{ "VOUTR", NULL, "DAC" },
};
#define PCM3008_RATES (SNDRV_PCM_RATE_32000 | SNDRV_PCM_RATE_44100 | \
SNDRV_PCM_RATE_48000)
static struct snd_soc_dai_driver pcm3008_dai = {
.name = "pcm3008-hifi",
.playback = {
.stream_name = "PCM3008 Playback",
.channels_min = 1,
.channels_max = 2,
.rates = PCM3008_RATES,
.formats = SNDRV_PCM_FMTBIT_S16_LE,
},
.capture = {
.stream_name = "PCM3008 Capture",
.channels_min = 1,
.channels_max = 2,
.rates = PCM3008_RATES,
.formats = SNDRV_PCM_FMTBIT_S16_LE,
},
};
static const struct snd_soc_component_driver soc_component_dev_pcm3008 = {
.dapm_widgets = pcm3008_dapm_widgets,
.num_dapm_widgets = ARRAY_SIZE(pcm3008_dapm_widgets),
.dapm_routes = pcm3008_dapm_routes,
.num_dapm_routes = ARRAY_SIZE(pcm3008_dapm_routes),
.idle_bias_on = 1,
.use_pmdown_time = 1,
.endianness = 1,
.non_legacy_dai_naming = 1,
};
static int pcm3008_codec_probe(struct platform_device *pdev)
{
struct pcm3008_setup_data *setup = pdev->dev.platform_data;
int ret;
if (!setup)
return -EINVAL;
/* DEM1 DEM0 DE-EMPHASIS_MODE
* Low Low De-emphasis 44.1 kHz ON
* Low High De-emphasis OFF
* High Low De-emphasis 48 kHz ON
* High High De-emphasis 32 kHz ON
*/
/* Configure DEM0 GPIO (turning OFF DAC De-emphasis). */
ret = devm_gpio_request_one(&pdev->dev, setup->dem0_pin,
GPIOF_OUT_INIT_HIGH, "codec_dem0");
if (ret != 0)
return ret;
/* Configure DEM1 GPIO (turning OFF DAC De-emphasis). */
ret = devm_gpio_request_one(&pdev->dev, setup->dem1_pin,
GPIOF_OUT_INIT_LOW, "codec_dem1");
if (ret != 0)
return ret;
/* Configure PDAD GPIO. */
ret = devm_gpio_request_one(&pdev->dev, setup->pdad_pin,
GPIOF_OUT_INIT_LOW, "codec_pdad");
if (ret != 0)
return ret;
/* Configure PDDA GPIO. */
ret = devm_gpio_request_one(&pdev->dev, setup->pdda_pin,
GPIOF_OUT_INIT_LOW, "codec_pdda");
if (ret != 0)
return ret;
return devm_snd_soc_register_component(&pdev->dev,
&soc_component_dev_pcm3008, &pcm3008_dai, 1);
}
MODULE_ALIAS("platform:pcm3008-codec");
static struct platform_driver pcm3008_codec_driver = {
.probe = pcm3008_codec_probe,
.driver = {
.name = "pcm3008-codec",
},
};
module_platform_driver(pcm3008_codec_driver);
MODULE_DESCRIPTION("Soc PCM3008 driver");
MODULE_AUTHOR("Hugo Villeneuve");
MODULE_LICENSE("GPL");