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// SPDX-License-Identifier: GPL-2.0+
//
// rx1950.c - ALSA SoC Audio Layer
//
// Copyright (c) 2010 Vasily Khoruzhick <anarsoul@gmail.com>
//
// Based on smdk2440.c and magician.c
//
// Authors: Graeme Gregory graeme.gregory@wolfsonmicro.com
// Philipp Zabel <philipp.zabel@gmail.com>
// Denis Grigoriev <dgreenday@gmail.com>
// Vasily Khoruzhick <anarsoul@gmail.com>
#include <linux/types.h>
#include <linux/gpio/consumer.h>
#include <linux/module.h>
#include <sound/soc.h>
#include <sound/jack.h>
#include "regs-iis.h"
#include "s3c24xx-i2s.h"
static int rx1950_uda1380_init(struct snd_soc_pcm_runtime *rtd);
static int rx1950_startup(struct snd_pcm_substream *substream);
static int rx1950_hw_params(struct snd_pcm_substream *substream,
struct snd_pcm_hw_params *params);
static int rx1950_spk_power(struct snd_soc_dapm_widget *w,
struct snd_kcontrol *kcontrol, int event);
static const unsigned int rates[] = {
16000,
44100,
48000,
};
static const struct snd_pcm_hw_constraint_list hw_rates = {
.count = ARRAY_SIZE(rates),
.list = rates,
};
static struct snd_soc_jack hp_jack;
static struct snd_soc_jack_pin hp_jack_pins[] = {
{
.pin = "Headphone Jack",
.mask = SND_JACK_HEADPHONE,
},
{
.pin = "Speaker",
.mask = SND_JACK_HEADPHONE,
.invert = 1,
},
};
static struct snd_soc_jack_gpio hp_jack_gpios[] = {
[0] = {
.name = "hp-gpio",
.report = SND_JACK_HEADPHONE,
.invert = 1,
.debounce_time = 200,
},
};
static const struct snd_soc_ops rx1950_ops = {
.startup = rx1950_startup,
.hw_params = rx1950_hw_params,
};
/* s3c24xx digital audio interface glue - connects codec <--> CPU */
SND_SOC_DAILINK_DEFS(uda1380,
DAILINK_COMP_ARRAY(COMP_CPU("s3c24xx-iis")),
DAILINK_COMP_ARRAY(COMP_CODEC("uda1380-codec.0-001a",
"uda1380-hifi")),
DAILINK_COMP_ARRAY(COMP_PLATFORM("s3c24xx-iis")));
static struct snd_soc_dai_link rx1950_uda1380_dai[] = {
{
.name = "uda1380",
.stream_name = "UDA1380 Duplex",
.init = rx1950_uda1380_init,
.dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
SND_SOC_DAIFMT_CBS_CFS,
.ops = &rx1950_ops,
SND_SOC_DAILINK_REG(uda1380),
},
};
/* rx1950 machine dapm widgets */
static const struct snd_soc_dapm_widget uda1380_dapm_widgets[] = {
SND_SOC_DAPM_HP("Headphone Jack", NULL),
SND_SOC_DAPM_MIC("Mic Jack", NULL),
SND_SOC_DAPM_SPK("Speaker", rx1950_spk_power),
};
/* rx1950 machine audio_map */
static const struct snd_soc_dapm_route audio_map[] = {
/* headphone connected to VOUTLHP, VOUTRHP */
{"Headphone Jack", NULL, "VOUTLHP"},
{"Headphone Jack", NULL, "VOUTRHP"},
/* ext speaker connected to VOUTL, VOUTR */
{"Speaker", NULL, "VOUTL"},
{"Speaker", NULL, "VOUTR"},
/* mic is connected to VINM */
{"VINM", NULL, "Mic Jack"},
};
static struct snd_soc_card rx1950_asoc = {
.name = "rx1950",
.owner = THIS_MODULE,
.dai_link = rx1950_uda1380_dai,
.num_links = ARRAY_SIZE(rx1950_uda1380_dai),
.dapm_widgets = uda1380_dapm_widgets,
.num_dapm_widgets = ARRAY_SIZE(uda1380_dapm_widgets),
.dapm_routes = audio_map,
.num_dapm_routes = ARRAY_SIZE(audio_map),
};
static int rx1950_startup(struct snd_pcm_substream *substream)
{
struct snd_pcm_runtime *runtime = substream->runtime;
return snd_pcm_hw_constraint_list(runtime, 0,
SNDRV_PCM_HW_PARAM_RATE,
&hw_rates);
}
struct gpio_desc *gpiod_speaker_power;
static int rx1950_spk_power(struct snd_soc_dapm_widget *w,
struct snd_kcontrol *kcontrol, int event)
{
if (SND_SOC_DAPM_EVENT_ON(event))
gpiod_set_value(gpiod_speaker_power, 1);
else
gpiod_set_value(gpiod_speaker_power, 0);
return 0;
}
static int rx1950_hw_params(struct snd_pcm_substream *substream,
struct snd_pcm_hw_params *params)
{
struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream);
struct snd_soc_dai *cpu_dai = asoc_rtd_to_cpu(rtd, 0);
int div;
int ret;
unsigned int rate = params_rate(params);
int clk_source, fs_mode;
switch (rate) {
case 16000:
case 48000:
clk_source = S3C24XX_CLKSRC_PCLK;
fs_mode = S3C2410_IISMOD_256FS;
div = s3c24xx_i2s_get_clockrate() / (256 * rate);
if (s3c24xx_i2s_get_clockrate() % (256 * rate) > (128 * rate))
div++;
break;
case 44100:
case 88200:
clk_source = S3C24XX_CLKSRC_MPLL;
fs_mode = S3C2410_IISMOD_384FS;
div = 1;
break;
default:
printk(KERN_ERR "%s: rate %d is not supported\n",
__func__, rate);
return -EINVAL;
}
/* select clock source */
ret = snd_soc_dai_set_sysclk(cpu_dai, clk_source, rate,
SND_SOC_CLOCK_OUT);
if (ret < 0)
return ret;
/* set MCLK division for sample rate */
ret = snd_soc_dai_set_clkdiv(cpu_dai, S3C24XX_DIV_MCLK,
fs_mode);
if (ret < 0)
return ret;
/* set BCLK division for sample rate */
ret = snd_soc_dai_set_clkdiv(cpu_dai, S3C24XX_DIV_BCLK,
S3C2410_IISMOD_32FS);
if (ret < 0)
return ret;
/* set prescaler division for sample rate */
ret = snd_soc_dai_set_clkdiv(cpu_dai, S3C24XX_DIV_PRESCALER,
S3C24XX_PRESCALE(div, div));
if (ret < 0)
return ret;
return 0;
}
static int rx1950_uda1380_init(struct snd_soc_pcm_runtime *rtd)
{
snd_soc_card_jack_new(rtd->card, "Headphone Jack", SND_JACK_HEADPHONE,
&hp_jack, hp_jack_pins, ARRAY_SIZE(hp_jack_pins));
snd_soc_jack_add_gpios(&hp_jack, ARRAY_SIZE(hp_jack_gpios),
hp_jack_gpios);
return 0;
}
static int rx1950_probe(struct platform_device *pdev)
{
struct device *dev = &pdev->dev;
/* configure some gpios */
gpiod_speaker_power = devm_gpiod_get(dev, "speaker-power", GPIOD_OUT_LOW);
if (IS_ERR(gpiod_speaker_power)) {
dev_err(dev, "cannot get gpio\n");
return PTR_ERR(gpiod_speaker_power);
}
hp_jack_gpios[0].gpiod_dev = dev;
rx1950_asoc.dev = dev;
return devm_snd_soc_register_card(dev, &rx1950_asoc);
}
struct platform_driver rx1950_audio = {
.driver = {
.name = "rx1950-audio",
.pm = &snd_soc_pm_ops,
},
.probe = rx1950_probe,
};
module_platform_driver(rx1950_audio);
/* Module information */
MODULE_AUTHOR("Vasily Khoruzhick");
MODULE_DESCRIPTION("ALSA SoC RX1950");
MODULE_LICENSE("GPL");
MODULE_ALIAS("platform:rx1950-audio");
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