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ASoC: Intel: eve: Enable mclk and ssp sclk early

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rt5663 and rt5514 needs mclk/sclk early to synchronize its internal
clocks.

Signed-off-by: Naveen M <naveen.m@intel.com>
Signed-off-by: Harsha Priya <harshapriya.n@intel.com>
Signed-off-by: Subhransu S. Prusty <subhransu.s.prusty@intel.com>
Signed-off-by: Brent Lu <brent.lu@intel.com>
Acked-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Link: https://lore.kernel.org/r/1571070480-25666-1-git-send-email-brent.lu@intel.com
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Naveen M 2019-10-15 00:28:00 +08:00 committed by Mark Brown
parent 9899a7a869
commit 47cbea2162
No known key found for this signature in database
GPG Key ID: 24D68B725D5487D0
2 changed files with 95 additions and 0 deletions
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1
sound/soc/intel/boards/Kconfig
View File

@ -320,6 +320,7 @@ config SND_SOC_INTEL_KBL_RT5663_RT5514_MAX98927_MACH
select SND_SOC_RT5514_SPI
select SND_SOC_MAX98927
select SND_SOC_HDAC_HDMI
select SND_SOC_INTEL_SKYLAKE_SSP_CLK
help
This adds support for ASoC Onboard Codec I2S machine driver. This will
create an alsa sound card for RT5663 + RT5514 + MAX98927.

94
sound/soc/intel/boards/kbl_rt5663_rt5514_max98927.c
View File

@ -22,6 +22,9 @@
#include "../../codecs/rt5514.h"
#include "../../codecs/rt5663.h"
#include "../../codecs/hdac_hdmi.h"
#include <linux/clk.h>
#include <linux/clk-provider.h>
#include <linux/clkdev.h>
#define KBL_REALTEK_CODEC_DAI "rt5663-aif"
#define KBL_REALTEK_DMIC_CODEC_DAI "rt5514-aif1"
@ -50,6 +53,8 @@ struct kbl_codec_private {
struct snd_soc_jack kabylake_headset;
struct list_head hdmi_pcm_list;
struct snd_soc_jack kabylake_hdmi[2];
struct clk *mclk;
struct clk *sclk;
};
enum {
@ -71,6 +76,61 @@ static const struct snd_kcontrol_new kabylake_controls[] = {
SOC_DAPM_PIN_SWITCH("DMIC"),
};
static int platform_clock_control(struct snd_soc_dapm_widget *w,
struct snd_kcontrol *k, int event)
{
struct snd_soc_dapm_context *dapm = w->dapm;
struct snd_soc_card *card = dapm->card;
struct kbl_codec_private *priv = snd_soc_card_get_drvdata(card);
int ret = 0;
/*
* MCLK/SCLK need to be ON early for a successful synchronization of
* codec internal clock. And the clocks are turned off during
* POST_PMD after the stream is stopped.
*/
switch (event) {
case SND_SOC_DAPM_PRE_PMU:
/* Enable MCLK */
ret = clk_set_rate(priv->mclk, 24000000);
if (ret < 0) {
dev_err(card->dev, "Can't set rate for mclk, err: %d\n",
ret);
return ret;
}
ret = clk_prepare_enable(priv->mclk);
if (ret < 0) {
dev_err(card->dev, "Can't enable mclk, err: %d\n", ret);
return ret;
}
/* Enable SCLK */
ret = clk_set_rate(priv->sclk, 3072000);
if (ret < 0) {
dev_err(card->dev, "Can't set rate for sclk, err: %d\n",
ret);
clk_disable_unprepare(priv->mclk);
return ret;
}
ret = clk_prepare_enable(priv->sclk);
if (ret < 0) {
dev_err(card->dev, "Can't enable sclk, err: %d\n", ret);
clk_disable_unprepare(priv->mclk);
}
break;
case SND_SOC_DAPM_POST_PMD:
clk_disable_unprepare(priv->mclk);
clk_disable_unprepare(priv->sclk);
break;
default:
return 0;
}
return 0;
}
static const struct snd_soc_dapm_widget kabylake_widgets[] = {
SND_SOC_DAPM_HP("Headphone Jack", NULL),
SND_SOC_DAPM_MIC("Headset Mic", NULL),
@ -79,11 +139,15 @@ static const struct snd_soc_dapm_widget kabylake_widgets[] = {
SND_SOC_DAPM_MIC("DMIC", NULL),
SND_SOC_DAPM_SPK("HDMI1", NULL),
SND_SOC_DAPM_SPK("HDMI2", NULL),
SND_SOC_DAPM_SUPPLY("Platform Clock", SND_SOC_NOPM, 0, 0,
platform_clock_control, SND_SOC_DAPM_PRE_PMU |
SND_SOC_DAPM_POST_PMD),
};
static const struct snd_soc_dapm_route kabylake_map[] = {
/* Headphones */
{ "Headphone Jack", NULL, "Platform Clock" },
{ "Headphone Jack", NULL, "HPOL" },
{ "Headphone Jack", NULL, "HPOR" },
@ -92,6 +156,7 @@ static const struct snd_soc_dapm_route kabylake_map[] = {
{ "Right Spk", NULL, "Right BE_OUT" },
/* other jacks */
{ "Headset Mic", NULL, "Platform Clock" },
{ "IN1P", NULL, "Headset Mic" },
{ "IN1N", NULL, "Headset Mic" },
@ -643,6 +708,7 @@ static int kabylake_audio_probe(struct platform_device *pdev)
{
struct kbl_codec_private *ctx;
struct snd_soc_acpi_mach *mach;
int ret = 0;
ctx = devm_kzalloc(&pdev->dev, sizeof(*ctx), GFP_KERNEL);
if (!ctx)
@ -658,6 +724,34 @@ static int kabylake_audio_probe(struct platform_device *pdev)
dmic_constraints = mach->mach_params.dmic_num == 2 ?
&constraints_dmic_2ch : &constraints_dmic_channels;
ctx->mclk = devm_clk_get(&pdev->dev, "ssp1_mclk");
if (IS_ERR(ctx->mclk)) {
ret = PTR_ERR(ctx->mclk);
if (ret == -ENOENT) {
dev_info(&pdev->dev,
"Failed to get ssp1_mclk, defer probe\n");
return -EPROBE_DEFER;
}
dev_err(&pdev->dev, "Failed to get ssp1_mclk with err:%d\n",
ret);
return ret;
}
ctx->sclk = devm_clk_get(&pdev->dev, "ssp1_sclk");
if (IS_ERR(ctx->sclk)) {
ret = PTR_ERR(ctx->sclk);
if (ret == -ENOENT) {
dev_info(&pdev->dev,
"Failed to get ssp1_sclk, defer probe\n");
return -EPROBE_DEFER;
}
dev_err(&pdev->dev, "Failed to get ssp1_sclk with err:%d\n",
ret);
return ret;
}
return devm_snd_soc_register_card(&pdev->dev, &kabylake_audio_card);
}