a8e43c21a8
The SSP DAI now handles the clocking setup itself, all it needs is the master clock frequency. Remove the code from Zylonite and Magician platforms. Signed-off-by: Daniel Mack <daniel@zonque.org> Signed-off-by: Mark Brown <broonie@kernel.org>
266 lines
6.1 KiB
C
266 lines
6.1 KiB
C
/*
|
|
* zylonite.c -- SoC audio for Zylonite
|
|
*
|
|
* Copyright 2008 Wolfson Microelectronics PLC.
|
|
* Author: Mark Brown <broonie@opensource.wolfsonmicro.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/module.h>
|
|
#include <linux/moduleparam.h>
|
|
#include <linux/device.h>
|
|
#include <linux/clk.h>
|
|
#include <linux/i2c.h>
|
|
#include <sound/core.h>
|
|
#include <sound/pcm.h>
|
|
#include <sound/pcm_params.h>
|
|
#include <sound/soc.h>
|
|
|
|
#include "../codecs/wm9713.h"
|
|
#include "pxa-ssp.h"
|
|
|
|
/*
|
|
* There is a physical switch SW15 on the board which changes the MCLK
|
|
* for the WM9713 between the standard AC97 master clock and the
|
|
* output of the CLK_POUT signal from the PXA.
|
|
*/
|
|
static int clk_pout;
|
|
module_param(clk_pout, int, 0);
|
|
MODULE_PARM_DESC(clk_pout, "Use CLK_POUT as WM9713 MCLK (SW15 on board).");
|
|
|
|
static struct clk *pout;
|
|
|
|
static struct snd_soc_card zylonite;
|
|
|
|
static const struct snd_soc_dapm_widget zylonite_dapm_widgets[] = {
|
|
SND_SOC_DAPM_HP("Headphone", NULL),
|
|
SND_SOC_DAPM_MIC("Headset Microphone", NULL),
|
|
SND_SOC_DAPM_MIC("Handset Microphone", NULL),
|
|
SND_SOC_DAPM_SPK("Multiactor", NULL),
|
|
SND_SOC_DAPM_SPK("Headset Earpiece", NULL),
|
|
};
|
|
|
|
/* Currently supported audio map */
|
|
static const struct snd_soc_dapm_route audio_map[] = {
|
|
|
|
/* Headphone output connected to HPL/HPR */
|
|
{ "Headphone", NULL, "HPL" },
|
|
{ "Headphone", NULL, "HPR" },
|
|
|
|
/* On-board earpiece */
|
|
{ "Headset Earpiece", NULL, "OUT3" },
|
|
|
|
/* Headphone mic */
|
|
{ "MIC2A", NULL, "Mic Bias" },
|
|
{ "Mic Bias", NULL, "Headset Microphone" },
|
|
|
|
/* On-board mic */
|
|
{ "MIC1", NULL, "Mic Bias" },
|
|
{ "Mic Bias", NULL, "Handset Microphone" },
|
|
|
|
/* Multiactor differentially connected over SPKL/SPKR */
|
|
{ "Multiactor", NULL, "SPKL" },
|
|
{ "Multiactor", NULL, "SPKR" },
|
|
};
|
|
|
|
static int zylonite_wm9713_init(struct snd_soc_pcm_runtime *rtd)
|
|
{
|
|
if (clk_pout)
|
|
snd_soc_dai_set_pll(rtd->codec_dai, 0, 0,
|
|
clk_get_rate(pout), 0);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int zylonite_voice_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;
|
|
struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
|
|
unsigned int wm9713_div = 0;
|
|
int ret = 0;
|
|
int rate = params_rate(params);
|
|
|
|
/* Only support ratios that we can generate neatly from the AC97
|
|
* based master clock - in particular, this excludes 44.1kHz.
|
|
* In most applications the voice DAC will be used for telephony
|
|
* data so multiples of 8kHz will be the common case.
|
|
*/
|
|
switch (rate) {
|
|
case 8000:
|
|
wm9713_div = 12;
|
|
break;
|
|
case 16000:
|
|
wm9713_div = 6;
|
|
break;
|
|
case 48000:
|
|
wm9713_div = 2;
|
|
break;
|
|
default:
|
|
/* Don't support OSS emulation */
|
|
return -EINVAL;
|
|
}
|
|
|
|
ret = snd_soc_dai_set_sysclk(cpu_dai, PXA_SSP_CLK_AUDIO, 0, 1);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
if (clk_pout)
|
|
ret = snd_soc_dai_set_clkdiv(codec_dai, WM9713_PCMCLK_PLL_DIV,
|
|
WM9713_PCMDIV(wm9713_div));
|
|
else
|
|
ret = snd_soc_dai_set_clkdiv(codec_dai, WM9713_PCMCLK_DIV,
|
|
WM9713_PCMDIV(wm9713_div));
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static const struct snd_soc_ops zylonite_voice_ops = {
|
|
.hw_params = zylonite_voice_hw_params,
|
|
};
|
|
|
|
static struct snd_soc_dai_link zylonite_dai[] = {
|
|
{
|
|
.name = "AC97",
|
|
.stream_name = "AC97 HiFi",
|
|
.codec_name = "wm9713-codec",
|
|
.platform_name = "pxa-pcm-audio",
|
|
.cpu_dai_name = "pxa2xx-ac97",
|
|
.codec_dai_name = "wm9713-hifi",
|
|
.init = zylonite_wm9713_init,
|
|
},
|
|
{
|
|
.name = "AC97 Aux",
|
|
.stream_name = "AC97 Aux",
|
|
.codec_name = "wm9713-codec",
|
|
.platform_name = "pxa-pcm-audio",
|
|
.cpu_dai_name = "pxa2xx-ac97-aux",
|
|
.codec_dai_name = "wm9713-aux",
|
|
},
|
|
{
|
|
.name = "WM9713 Voice",
|
|
.stream_name = "WM9713 Voice",
|
|
.codec_name = "wm9713-codec",
|
|
.platform_name = "pxa-pcm-audio",
|
|
.cpu_dai_name = "pxa-ssp-dai.2",
|
|
.codec_dai_name = "wm9713-voice",
|
|
.dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
|
|
SND_SOC_DAIFMT_CBS_CFS,
|
|
.ops = &zylonite_voice_ops,
|
|
},
|
|
};
|
|
|
|
static int zylonite_probe(struct snd_soc_card *card)
|
|
{
|
|
int ret;
|
|
|
|
if (clk_pout) {
|
|
pout = clk_get(NULL, "CLK_POUT");
|
|
if (IS_ERR(pout)) {
|
|
dev_err(card->dev, "Unable to obtain CLK_POUT: %ld\n",
|
|
PTR_ERR(pout));
|
|
return PTR_ERR(pout);
|
|
}
|
|
|
|
ret = clk_enable(pout);
|
|
if (ret != 0) {
|
|
dev_err(card->dev, "Unable to enable CLK_POUT: %d\n",
|
|
ret);
|
|
clk_put(pout);
|
|
return ret;
|
|
}
|
|
|
|
dev_dbg(card->dev, "MCLK enabled at %luHz\n",
|
|
clk_get_rate(pout));
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int zylonite_remove(struct snd_soc_card *card)
|
|
{
|
|
if (clk_pout) {
|
|
clk_disable(pout);
|
|
clk_put(pout);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int zylonite_suspend_post(struct snd_soc_card *card)
|
|
{
|
|
if (clk_pout)
|
|
clk_disable(pout);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int zylonite_resume_pre(struct snd_soc_card *card)
|
|
{
|
|
int ret = 0;
|
|
|
|
if (clk_pout) {
|
|
ret = clk_enable(pout);
|
|
if (ret != 0)
|
|
dev_err(card->dev, "Unable to enable CLK_POUT: %d\n",
|
|
ret);
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
static struct snd_soc_card zylonite = {
|
|
.name = "Zylonite",
|
|
.owner = THIS_MODULE,
|
|
.probe = &zylonite_probe,
|
|
.remove = &zylonite_remove,
|
|
.suspend_post = &zylonite_suspend_post,
|
|
.resume_pre = &zylonite_resume_pre,
|
|
.dai_link = zylonite_dai,
|
|
.num_links = ARRAY_SIZE(zylonite_dai),
|
|
|
|
.dapm_widgets = zylonite_dapm_widgets,
|
|
.num_dapm_widgets = ARRAY_SIZE(zylonite_dapm_widgets),
|
|
.dapm_routes = audio_map,
|
|
.num_dapm_routes = ARRAY_SIZE(audio_map),
|
|
};
|
|
|
|
static struct platform_device *zylonite_snd_ac97_device;
|
|
|
|
static int __init zylonite_init(void)
|
|
{
|
|
int ret;
|
|
|
|
zylonite_snd_ac97_device = platform_device_alloc("soc-audio", -1);
|
|
if (!zylonite_snd_ac97_device)
|
|
return -ENOMEM;
|
|
|
|
platform_set_drvdata(zylonite_snd_ac97_device, &zylonite);
|
|
|
|
ret = platform_device_add(zylonite_snd_ac97_device);
|
|
if (ret != 0)
|
|
platform_device_put(zylonite_snd_ac97_device);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static void __exit zylonite_exit(void)
|
|
{
|
|
platform_device_unregister(zylonite_snd_ac97_device);
|
|
}
|
|
|
|
module_init(zylonite_init);
|
|
module_exit(zylonite_exit);
|
|
|
|
MODULE_AUTHOR("Mark Brown <broonie@opensource.wolfsonmicro.com>");
|
|
MODULE_DESCRIPTION("ALSA SoC WM9713 Zylonite");
|
|
MODULE_LICENSE("GPL");
|