From: Naveen M <naveen.m@xxxxxxxxx>
rt5663 and rt5514 needs mclk/sclk early to synchronize its internal
clocks.
Signed-off-by: Naveen M <naveen.m@xxxxxxxxx>
Signed-off-by: Harsha Priya <harshapriya.n@xxxxxxxxx>
Signed-off-by: Subhransu S. Prusty <subhransu.s.prusty@xxxxxxxxx>
Signed-off-by: Brent Lu <brent.lu@xxxxxxxxx>
---
sound/soc/intel/boards/Kconfig | 1 +
.../soc/intel/boards/kbl_rt5663_rt5514_max98927.c | 94 ++++++++++++++++++++++
2 files changed, 95 insertions(+)
diff --git a/sound/soc/intel/boards/Kconfig b/sound/soc/intel/boards/Kconfig
index 5c27f7a..5e0e7db 100644
--- a/sound/soc/intel/boards/Kconfig
+++ b/sound/soc/intel/boards/Kconfig
@@ -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.
diff --git a/sound/soc/intel/boards/kbl_rt5663_rt5514_max98927.c b/sound/soc/intel/boards/kbl_rt5663_rt5514_max98927.c
index 74dda87..dc09a85 100644
--- a/sound/soc/intel/boards/kbl_rt5663_rt5514_max98927.c
+++ b/sound/soc/intel/boards/kbl_rt5663_rt5514_max98927.c
@@ -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);
}
--
2.7.4
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