ASoC: add support for the sh7722 Migo-R board
Add support for audio on sh7722-based Migo-R boards, using SIU and wm8978 codec, recording via external microphone and playback via headphones are implemented. Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de> Acked-by: Liam Girdwood <lrg@slimlogic.co.uk> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
This commit is contained in:
Guennadi Liakhovetski
Mark Brown
parent
9e9d04c05f
commit
9f5b64b767
|
|
@ -61,4 +61,12 @@ config SND_FSI_DA7210
|
|||
This option enables generic sound support for the
|
||||
FSI - DA7210 unit
|
||||
|
||||
config SND_SIU_MIGOR
|
||||
tristate "SIU sound support on Migo-R"
|
||||
depends on SH_MIGOR
|
||||
select SND_SOC_SH4_SIU
|
||||
select SND_SOC_WM8978
|
||||
help
|
||||
This option enables sound support for the SH7722 Migo-R board
|
||||
|
||||
endmenu
|
||||
|
|
|
|||
|
|
@ -16,7 +16,9 @@ obj-$(CONFIG_SND_SOC_SH4_SIU) += snd-soc-siu.o
|
|||
snd-soc-sh7760-ac97-objs := sh7760-ac97.o
|
||||
snd-soc-fsi-ak4642-objs := fsi-ak4642.o
|
||||
snd-soc-fsi-da7210-objs := fsi-da7210.o
|
||||
snd-soc-migor-objs := migor.o
|
||||
|
||||
obj-$(CONFIG_SND_SH7760_AC97) += snd-soc-sh7760-ac97.o
|
||||
obj-$(CONFIG_SND_FSI_AK4642) += snd-soc-fsi-ak4642.o
|
||||
obj-$(CONFIG_SND_FSI_DA7210) += snd-soc-fsi-da7210.o
|
||||
obj-$(CONFIG_SND_SIU_MIGOR) += snd-soc-migor.o
|
||||
|
|
|
|||
|
|
@ -0,0 +1,222 @@
|
|||
/*
|
||||
* ALSA SoC driver for Migo-R
|
||||
*
|
||||
* Copyright (C) 2009-2010 Guennadi Liakhovetski <g.liakhovetski@gmx.de>
|
||||
*
|
||||
* 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.
|
||||
*/
|
||||
|
||||
#include <linux/device.h>
|
||||
#include <linux/firmware.h>
|
||||
#include <linux/module.h>
|
||||
|
||||
#include <asm/clock.h>
|
||||
|
||||
#include <cpu/sh7722.h>
|
||||
|
||||
#include <sound/core.h>
|
||||
#include <sound/pcm.h>
|
||||
#include <sound/soc.h>
|
||||
#include <sound/soc-dapm.h>
|
||||
|
||||
#include "../codecs/wm8978.h"
|
||||
#include "siu.h"
|
||||
|
||||
/* Default 8000Hz sampling frequency */
|
||||
static unsigned long codec_freq = 8000 * 512;
|
||||
|
||||
static unsigned int use_count;
|
||||
|
||||
/* External clock, sourced from the codec at the SIUMCKB pin */
|
||||
static unsigned long siumckb_recalc(struct clk *clk)
|
||||
{
|
||||
return codec_freq;
|
||||
}
|
||||
|
||||
static struct clk_ops siumckb_clk_ops = {
|
||||
.recalc = siumckb_recalc,
|
||||
};
|
||||
|
||||
static struct clk siumckb_clk = {
|
||||
.name = "siumckb_clk",
|
||||
.id = -1,
|
||||
.ops = &siumckb_clk_ops,
|
||||
.rate = 0, /* initialised at run-time */
|
||||
};
|
||||
|
||||
static int migor_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->dai->codec_dai;
|
||||
int ret;
|
||||
unsigned int rate = params_rate(params);
|
||||
|
||||
ret = snd_soc_dai_set_sysclk(codec_dai, WM8978_PLL, 13000000,
|
||||
SND_SOC_CLOCK_IN);
|
||||
if (ret < 0)
|
||||
return ret;
|
||||
|
||||
ret = snd_soc_dai_set_clkdiv(codec_dai, WM8978_DACCLK, 8);
|
||||
if (ret < 0)
|
||||
return ret;
|
||||
|
||||
ret = snd_soc_dai_set_clkdiv(codec_dai, WM8978_OPCLKRATE, rate * 512);
|
||||
if (ret < 0)
|
||||
return ret;
|
||||
|
||||
ret = snd_soc_dai_set_fmt(codec_dai, SND_SOC_DAIFMT_NB_IF |
|
||||
SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_CBS_CFS);
|
||||
if (ret < 0)
|
||||
return ret;
|
||||
|
||||
ret = snd_soc_dai_set_fmt(rtd->dai->cpu_dai, SND_SOC_DAIFMT_NB_IF |
|
||||
SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_CBS_CFS);
|
||||
if (ret < 0)
|
||||
return ret;
|
||||
|
||||
codec_freq = rate * 512;
|
||||
/*
|
||||
* This propagates the parent frequency change to children and
|
||||
* recalculates the frequency table
|
||||
*/
|
||||
clk_set_rate(&siumckb_clk, codec_freq);
|
||||
dev_dbg(codec_dai->dev, "%s: configure %luHz\n", __func__, codec_freq);
|
||||
|
||||
ret = snd_soc_dai_set_sysclk(rtd->dai->cpu_dai, SIU_CLKB_EXT,
|
||||
codec_freq / 2, SND_SOC_CLOCK_IN);
|
||||
|
||||
if (!ret)
|
||||
use_count++;
|
||||
|
||||
return ret;
|
||||
}
|
||||
|
||||
static int migor_hw_free(struct snd_pcm_substream *substream)
|
||||
{
|
||||
struct snd_soc_pcm_runtime *rtd = substream->private_data;
|
||||
struct snd_soc_dai *codec_dai = rtd->dai->codec_dai;
|
||||
|
||||
if (use_count) {
|
||||
use_count--;
|
||||
|
||||
if (!use_count)
|
||||
snd_soc_dai_set_sysclk(codec_dai, WM8978_PLL, 0,
|
||||
SND_SOC_CLOCK_IN);
|
||||
} else {
|
||||
dev_dbg(codec_dai->dev, "Unbalanced hw_free!\n");
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static struct snd_soc_ops migor_dai_ops = {
|
||||
.hw_params = migor_hw_params,
|
||||
.hw_free = migor_hw_free,
|
||||
};
|
||||
|
||||
static const struct snd_soc_dapm_widget migor_dapm_widgets[] = {
|
||||
SND_SOC_DAPM_HP("Headphone", NULL),
|
||||
SND_SOC_DAPM_MIC("Onboard Microphone", NULL),
|
||||
SND_SOC_DAPM_MIC("External Microphone", NULL),
|
||||
};
|
||||
|
||||
static const struct snd_soc_dapm_route audio_map[] = {
|
||||
/* Headphone output connected to LHP/RHP, enable OUT4 for VMID */
|
||||
{ "Headphone", NULL, "OUT4 VMID" },
|
||||
{ "OUT4 VMID", NULL, "LHP" },
|
||||
{ "OUT4 VMID", NULL, "RHP" },
|
||||
|
||||
/* On-board microphone */
|
||||
{ "RMICN", NULL, "Mic Bias" },
|
||||
{ "RMICP", NULL, "Mic Bias" },
|
||||
{ "Mic Bias", NULL, "Onboard Microphone" },
|
||||
|
||||
/* External microphone */
|
||||
{ "LMICN", NULL, "Mic Bias" },
|
||||
{ "LMICP", NULL, "Mic Bias" },
|
||||
{ "Mic Bias", NULL, "External Microphone" },
|
||||
};
|
||||
|
||||
static int migor_dai_init(struct snd_soc_codec *codec)
|
||||
{
|
||||
snd_soc_dapm_new_controls(codec, migor_dapm_widgets,
|
||||
ARRAY_SIZE(migor_dapm_widgets));
|
||||
|
||||
snd_soc_dapm_add_routes(codec, audio_map, ARRAY_SIZE(audio_map));
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
/* migor digital audio interface glue - connects codec <--> CPU */
|
||||
static struct snd_soc_dai_link migor_dai = {
|
||||
.name = "wm8978",
|
||||
.stream_name = "WM8978",
|
||||
.cpu_dai = &siu_i2s_dai,
|
||||
.codec_dai = &wm8978_dai,
|
||||
.ops = &migor_dai_ops,
|
||||
.init = migor_dai_init,
|
||||
};
|
||||
|
||||
/* migor audio machine driver */
|
||||
static struct snd_soc_card snd_soc_migor = {
|
||||
.name = "Migo-R",
|
||||
.platform = &siu_platform,
|
||||
.dai_link = &migor_dai,
|
||||
.num_links = 1,
|
||||
};
|
||||
|
||||
/* migor audio subsystem */
|
||||
static struct snd_soc_device migor_snd_devdata = {
|
||||
.card = &snd_soc_migor,
|
||||
.codec_dev = &soc_codec_dev_wm8978,
|
||||
};
|
||||
|
||||
static struct platform_device *migor_snd_device;
|
||||
|
||||
static int __init migor_init(void)
|
||||
{
|
||||
int ret;
|
||||
|
||||
ret = clk_register(&siumckb_clk);
|
||||
if (ret < 0)
|
||||
return ret;
|
||||
|
||||
/* Port number used on this machine: port B */
|
||||
migor_snd_device = platform_device_alloc("soc-audio", 1);
|
||||
if (!migor_snd_device) {
|
||||
ret = -ENOMEM;
|
||||
goto epdevalloc;
|
||||
}
|
||||
|
||||
platform_set_drvdata(migor_snd_device, &migor_snd_devdata);
|
||||
|
||||
migor_snd_devdata.dev = &migor_snd_device->dev;
|
||||
|
||||
ret = platform_device_add(migor_snd_device);
|
||||
if (ret)
|
||||
goto epdevadd;
|
||||
|
||||
return 0;
|
||||
|
||||
epdevadd:
|
||||
platform_device_put(migor_snd_device);
|
||||
epdevalloc:
|
||||
clk_unregister(&siumckb_clk);
|
||||
return ret;
|
||||
}
|
||||
|
||||
static void __exit migor_exit(void)
|
||||
{
|
||||
clk_unregister(&siumckb_clk);
|
||||
platform_device_unregister(migor_snd_device);
|
||||
}
|
||||
|
||||
module_init(migor_init);
|
||||
module_exit(migor_exit);
|
||||
|
||||
MODULE_AUTHOR("Guennadi Liakhovetski <g.liakhovetski@gmx.de>");
|
||||
MODULE_DESCRIPTION("ALSA SoC Migor");
|
||||
MODULE_LICENSE("GPL v2");
|
||||
Loading…
Reference in New Issue