linux/sound/soc/ti/osk5912.c
Thomas Gleixner 2b27bdcc20 treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 336
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 version 2 as
  published by the free software foundation this program is
  distributed in the hope that it will be useful but without any
  warranty without even the implied warranty of merchantability or
  fitness for a particular purpose see the gnu general public license
  for more details you should have received a copy of the gnu general
  public license along with this program if not write to the free
  software foundation inc 51 franklin st fifth floor boston ma 02110
  1301 usa

extracted by the scancode license scanner the SPDX license identifier

  GPL-2.0-only

has been chosen to replace the boilerplate/reference in 246 file(s).

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Alexios Zavras <alexios.zavras@intel.com>
Reviewed-by: Allison Randal <allison@lohutok.net>
Cc: linux-spdx@vger.kernel.org
Link: https://lkml.kernel.org/r/20190530000436.674189849@linutronix.de
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-06-05 17:37:07 +02:00

174 lines
3.9 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 = substream->private_data;
struct snd_soc_dai *codec_dai = rtd->codec_dai;
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 */
static struct snd_soc_dai_link osk_dai = {
.name = "TLV320AIC23",
.stream_name = "AIC23",
.cpu_dai_name = "omap-mcbsp.1",
.codec_dai_name = "tlv320aic23-hifi",
.platform_name = "omap-mcbsp.1",
.codec_name = "tlv320aic23-codec",
.dai_fmt = SND_SOC_DAIFMT_DSP_B | SND_SOC_DAIFMT_NB_NF |
SND_SOC_DAIFMT_CBM_CFM,
.ops = &osk_ops,
};
/* 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");