301 lines
7.0 KiB
C
301 lines
7.0 KiB
C
/*
|
|
* 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>
|
|
*
|
|
* 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.
|
|
*
|
|
*/
|
|
|
|
#include <linux/types.h>
|
|
#include <linux/gpio.h>
|
|
#include <linux/module.h>
|
|
|
|
#include <sound/soc.h>
|
|
#include <sound/jack.h>
|
|
|
|
#include <mach/gpio-samsung.h>
|
|
#include "regs-iis.h"
|
|
#include <asm/mach-types.h>
|
|
|
|
#include "s3c24xx-i2s.h"
|
|
|
|
static int rx1950_uda1380_init(struct snd_soc_pcm_runtime *rtd);
|
|
static int rx1950_uda1380_card_remove(struct snd_soc_card *card);
|
|
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 unsigned int rates[] = {
|
|
16000,
|
|
44100,
|
|
48000,
|
|
};
|
|
|
|
static struct snd_pcm_hw_constraint_list hw_rates = {
|
|
.count = ARRAY_SIZE(rates),
|
|
.list = rates,
|
|
.mask = 0,
|
|
};
|
|
|
|
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] = {
|
|
.gpio = S3C2410_GPG(12),
|
|
.name = "hp-gpio",
|
|
.report = SND_JACK_HEADPHONE,
|
|
.invert = 1,
|
|
.debounce_time = 200,
|
|
},
|
|
};
|
|
|
|
static struct snd_soc_ops rx1950_ops = {
|
|
.startup = rx1950_startup,
|
|
.hw_params = rx1950_hw_params,
|
|
};
|
|
|
|
/* s3c24xx digital audio interface glue - connects codec <--> CPU */
|
|
static struct snd_soc_dai_link rx1950_uda1380_dai[] = {
|
|
{
|
|
.name = "uda1380",
|
|
.stream_name = "UDA1380 Duplex",
|
|
.cpu_dai_name = "s3c24xx-iis",
|
|
.codec_dai_name = "uda1380-hifi",
|
|
.init = rx1950_uda1380_init,
|
|
.platform_name = "s3c24xx-iis",
|
|
.codec_name = "uda1380-codec.0-001a",
|
|
.ops = &rx1950_ops,
|
|
},
|
|
};
|
|
|
|
/* 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,
|
|
.remove = rx1950_uda1380_card_remove,
|
|
.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 struct platform_device *s3c24xx_snd_device;
|
|
|
|
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);
|
|
}
|
|
|
|
static int rx1950_spk_power(struct snd_soc_dapm_widget *w,
|
|
struct snd_kcontrol *kcontrol, int event)
|
|
{
|
|
if (SND_SOC_DAPM_EVENT_ON(event))
|
|
gpio_set_value(S3C2410_GPA(1), 1);
|
|
else
|
|
gpio_set_value(S3C2410_GPA(1), 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 = substream->private_data;
|
|
struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
|
|
struct snd_soc_dai *codec_dai = rtd->codec_dai;
|
|
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;
|
|
}
|
|
|
|
/* set codec DAI configuration */
|
|
ret = snd_soc_dai_set_fmt(codec_dai, SND_SOC_DAIFMT_I2S |
|
|
SND_SOC_DAIFMT_NB_NF | SND_SOC_DAIFMT_CBS_CFS);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
/* set cpu DAI configuration */
|
|
ret = snd_soc_dai_set_fmt(cpu_dai, SND_SOC_DAIFMT_I2S |
|
|
SND_SOC_DAIFMT_NB_NF | SND_SOC_DAIFMT_CBS_CFS);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
/* 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)
|
|
{
|
|
struct snd_soc_codec *codec = rtd->codec;
|
|
|
|
snd_soc_jack_new(codec, "Headphone Jack", SND_JACK_HEADPHONE,
|
|
&hp_jack);
|
|
|
|
snd_soc_jack_add_pins(&hp_jack, ARRAY_SIZE(hp_jack_pins),
|
|
hp_jack_pins);
|
|
|
|
snd_soc_jack_add_gpios(&hp_jack, ARRAY_SIZE(hp_jack_gpios),
|
|
hp_jack_gpios);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int rx1950_uda1380_card_remove(struct snd_soc_card *card)
|
|
{
|
|
snd_soc_jack_free_gpios(&hp_jack, ARRAY_SIZE(hp_jack_gpios),
|
|
hp_jack_gpios);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int __init rx1950_init(void)
|
|
{
|
|
int ret;
|
|
|
|
if (!machine_is_rx1950())
|
|
return -ENODEV;
|
|
|
|
/* configure some gpios */
|
|
ret = gpio_request(S3C2410_GPA(1), "speaker-power");
|
|
if (ret)
|
|
goto err_gpio;
|
|
|
|
ret = gpio_direction_output(S3C2410_GPA(1), 0);
|
|
if (ret)
|
|
goto err_gpio_conf;
|
|
|
|
s3c24xx_snd_device = platform_device_alloc("soc-audio", -1);
|
|
if (!s3c24xx_snd_device) {
|
|
ret = -ENOMEM;
|
|
goto err_plat_alloc;
|
|
}
|
|
|
|
platform_set_drvdata(s3c24xx_snd_device, &rx1950_asoc);
|
|
ret = platform_device_add(s3c24xx_snd_device);
|
|
|
|
if (ret) {
|
|
platform_device_put(s3c24xx_snd_device);
|
|
goto err_plat_add;
|
|
}
|
|
|
|
return 0;
|
|
|
|
err_plat_add:
|
|
err_plat_alloc:
|
|
err_gpio_conf:
|
|
gpio_free(S3C2410_GPA(1));
|
|
|
|
err_gpio:
|
|
return ret;
|
|
}
|
|
|
|
static void __exit rx1950_exit(void)
|
|
{
|
|
platform_device_unregister(s3c24xx_snd_device);
|
|
gpio_free(S3C2410_GPA(1));
|
|
}
|
|
|
|
module_init(rx1950_init);
|
|
module_exit(rx1950_exit);
|
|
|
|
/* Module information */
|
|
MODULE_AUTHOR("Vasily Khoruzhick");
|
|
MODULE_DESCRIPTION("ALSA SoC RX1950");
|
|
MODULE_LICENSE("GPL");
|