177 lines
4.0 KiB
C
177 lines
4.0 KiB
C
// SPDX-License-Identifier: GPL-2.0-only
|
|
/*
|
|
* osk5912.c -- SoC audio for OSK 5912
|
|
*
|
|
* Copyright (C) 2008 Mistral Solutions
|
|
*
|
|
* Contact: Arun KS <arunks@mistralsolutions.com>
|
|
*/
|
|
|
|
#include <linux/clk.h>
|
|
#include <linux/platform_device.h>
|
|
#include <sound/core.h>
|
|
#include <sound/pcm.h>
|
|
#include <sound/soc.h>
|
|
|
|
#include <asm/mach-types.h>
|
|
#include <linux/gpio.h>
|
|
#include <linux/module.h>
|
|
#include <linux/platform_data/asoc-ti-mcbsp.h>
|
|
|
|
#include "omap-mcbsp.h"
|
|
#include "../codecs/tlv320aic23.h"
|
|
|
|
#define CODEC_CLOCK 12000000
|
|
|
|
static struct clk *tlv320aic23_mclk;
|
|
|
|
static int osk_startup(struct snd_pcm_substream *substream)
|
|
{
|
|
return clk_enable(tlv320aic23_mclk);
|
|
}
|
|
|
|
static void osk_shutdown(struct snd_pcm_substream *substream)
|
|
{
|
|
clk_disable(tlv320aic23_mclk);
|
|
}
|
|
|
|
static int osk_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 *codec_dai = asoc_rtd_to_codec(rtd, 0);
|
|
int err;
|
|
|
|
/* Set the codec system clock for DAC and ADC */
|
|
err =
|
|
snd_soc_dai_set_sysclk(codec_dai, 0, CODEC_CLOCK, SND_SOC_CLOCK_IN);
|
|
|
|
if (err < 0) {
|
|
printk(KERN_ERR "can't set codec system clock\n");
|
|
return err;
|
|
}
|
|
|
|
return err;
|
|
}
|
|
|
|
static const struct snd_soc_ops osk_ops = {
|
|
.startup = osk_startup,
|
|
.hw_params = osk_hw_params,
|
|
.shutdown = osk_shutdown,
|
|
};
|
|
|
|
static const struct snd_soc_dapm_widget tlv320aic23_dapm_widgets[] = {
|
|
SND_SOC_DAPM_HP("Headphone Jack", NULL),
|
|
SND_SOC_DAPM_LINE("Line In", NULL),
|
|
SND_SOC_DAPM_MIC("Mic Jack", NULL),
|
|
};
|
|
|
|
static const struct snd_soc_dapm_route audio_map[] = {
|
|
{"Headphone Jack", NULL, "LHPOUT"},
|
|
{"Headphone Jack", NULL, "RHPOUT"},
|
|
|
|
{"LLINEIN", NULL, "Line In"},
|
|
{"RLINEIN", NULL, "Line In"},
|
|
|
|
{"MICIN", NULL, "Mic Jack"},
|
|
};
|
|
|
|
/* Digital audio interface glue - connects codec <--> CPU */
|
|
SND_SOC_DAILINK_DEFS(aic23,
|
|
DAILINK_COMP_ARRAY(COMP_CPU("omap-mcbsp.1")),
|
|
DAILINK_COMP_ARRAY(COMP_CODEC("tlv320aic23-codec",
|
|
"tlv320aic23-hifi")),
|
|
DAILINK_COMP_ARRAY(COMP_PLATFORM("omap-mcbsp.1")));
|
|
|
|
static struct snd_soc_dai_link osk_dai = {
|
|
.name = "TLV320AIC23",
|
|
.stream_name = "AIC23",
|
|
.dai_fmt = SND_SOC_DAIFMT_DSP_B | SND_SOC_DAIFMT_NB_NF |
|
|
SND_SOC_DAIFMT_CBM_CFM,
|
|
.ops = &osk_ops,
|
|
SND_SOC_DAILINK_REG(aic23),
|
|
};
|
|
|
|
/* Audio machine driver */
|
|
static struct snd_soc_card snd_soc_card_osk = {
|
|
.name = "OSK5912",
|
|
.owner = THIS_MODULE,
|
|
.dai_link = &osk_dai,
|
|
.num_links = 1,
|
|
|
|
.dapm_widgets = tlv320aic23_dapm_widgets,
|
|
.num_dapm_widgets = ARRAY_SIZE(tlv320aic23_dapm_widgets),
|
|
.dapm_routes = audio_map,
|
|
.num_dapm_routes = ARRAY_SIZE(audio_map),
|
|
};
|
|
|
|
static struct platform_device *osk_snd_device;
|
|
|
|
static int __init osk_soc_init(void)
|
|
{
|
|
int err;
|
|
u32 curRate;
|
|
struct device *dev;
|
|
|
|
if (!(machine_is_omap_osk()))
|
|
return -ENODEV;
|
|
|
|
osk_snd_device = platform_device_alloc("soc-audio", -1);
|
|
if (!osk_snd_device)
|
|
return -ENOMEM;
|
|
|
|
platform_set_drvdata(osk_snd_device, &snd_soc_card_osk);
|
|
err = platform_device_add(osk_snd_device);
|
|
if (err)
|
|
goto err1;
|
|
|
|
dev = &osk_snd_device->dev;
|
|
|
|
tlv320aic23_mclk = clk_get(dev, "mclk");
|
|
if (IS_ERR(tlv320aic23_mclk)) {
|
|
printk(KERN_ERR "Could not get mclk clock\n");
|
|
err = PTR_ERR(tlv320aic23_mclk);
|
|
goto err2;
|
|
}
|
|
|
|
/*
|
|
* Configure 12 MHz output on MCLK.
|
|
*/
|
|
curRate = (uint) clk_get_rate(tlv320aic23_mclk);
|
|
if (curRate != CODEC_CLOCK) {
|
|
if (clk_set_rate(tlv320aic23_mclk, CODEC_CLOCK)) {
|
|
printk(KERN_ERR "Cannot set MCLK for AIC23 CODEC\n");
|
|
err = -ECANCELED;
|
|
goto err3;
|
|
}
|
|
}
|
|
|
|
printk(KERN_INFO "MCLK = %d [%d]\n",
|
|
(uint) clk_get_rate(tlv320aic23_mclk), CODEC_CLOCK);
|
|
|
|
return 0;
|
|
|
|
err3:
|
|
clk_put(tlv320aic23_mclk);
|
|
err2:
|
|
platform_device_del(osk_snd_device);
|
|
err1:
|
|
platform_device_put(osk_snd_device);
|
|
|
|
return err;
|
|
|
|
}
|
|
|
|
static void __exit osk_soc_exit(void)
|
|
{
|
|
clk_put(tlv320aic23_mclk);
|
|
platform_device_unregister(osk_snd_device);
|
|
}
|
|
|
|
module_init(osk_soc_init);
|
|
module_exit(osk_soc_exit);
|
|
|
|
MODULE_AUTHOR("Arun KS <arunks@mistralsolutions.com>");
|
|
MODULE_DESCRIPTION("ALSA SoC OSK 5912");
|
|
MODULE_LICENSE("GPL");
|