Sorry, V4 got one stray change for SSP0 ops. Need to send V5.
czw., 10 wrz 2020 o 17:40 Radoslaw Biernacki rad@semihalf.com napisał(a):
Since 256xFS clocks cannot be generated by SKL, the NAU8825 is configured to re-generate its system clock from the BCLK using the FLL. The link is configured to use a 48kHz frame rate, and 24 bits in 25-bit slot. The SSP configuration is extracted from NHLT settings and not dynamically changed. Listening tests and measurements do not show any distortion or issues
Signed-off-by: John Hsu KCHSU0@nuvoton.com Signed-off-by: Yong Zhi yong.zhi@intel.com Signed-off-by: Mac Chiang mac.chiang@intel.com Signed-off-by: Ben Zhang benzh@chromium.org Signed-off-by: Radoslaw Biernacki rad@semihalf.com
Notes: v1 -> v2: - adding same changes to skl_nau88l25_max98357a.c v2 -> v3: - removing msleep() in SNDRV_PCM_TRIGGER_RESUME as it unnecessarily increase playback/capture latency while actually FLL does not require it. - simplifing commit message v3 -> v4: - simplifing the PM resume callback code for setting the FLL - adding comment for the stream START/RESUME sequence which prevent audio pops - fixing mising var initialization in platform_clock_control()
.../soc/intel/boards/skl_nau88l25_max98357a.c | 63 ++++++++++++------ sound/soc/intel/boards/skl_nau88l25_ssm4567.c | 65 +++++++++++++------ 2 files changed, 86 insertions(+), 42 deletions(-)
diff --git a/sound/soc/intel/boards/skl_nau88l25_max98357a.c b/sound/soc/intel/boards/skl_nau88l25_max98357a.c index d7b8154c43a4..2f0abbd2dd8d 100644 --- a/sound/soc/intel/boards/skl_nau88l25_max98357a.c +++ b/sound/soc/intel/boards/skl_nau88l25_max98357a.c @@ -8,6 +8,7 @@
#include <linux/module.h> #include <linux/platform_device.h> +#include <linux/delay.h> #include <sound/core.h> #include <sound/jack.h> #include <sound/pcm.h> @@ -47,12 +48,12 @@ enum { };
static int platform_clock_control(struct snd_soc_dapm_widget *w,
struct snd_kcontrol *k, int event)
struct snd_kcontrol *k, int event){ struct snd_soc_dapm_context *dapm = w->dapm; struct snd_soc_card *card = dapm->card; struct snd_soc_dai *codec_dai;
int ret;
int ret = 0; codec_dai = snd_soc_card_get_codec_dai(card, SKL_NUVOTON_CODEC_DAI); if (!codec_dai) {@@ -60,14 +61,7 @@ static int platform_clock_control(struct snd_soc_dapm_widget *w, return -EIO; }
if (SND_SOC_DAPM_EVENT_ON(event)) {ret = snd_soc_dai_set_sysclk(codec_dai,NAU8825_CLK_MCLK, 24000000, SND_SOC_CLOCK_IN);if (ret < 0) {dev_err(card->dev, "set sysclk err = %d\n", ret);return -EIO;}} else {
if (!SND_SOC_DAPM_EVENT_ON(event)) { ret = snd_soc_dai_set_sysclk(codec_dai, NAU8825_CLK_INTERNAL, 0, SND_SOC_CLOCK_IN); if (ret < 0) {@@ -292,24 +286,51 @@ static const struct snd_soc_ops skylake_nau8825_fe_ops = { .startup = skl_fe_startup, };
-static int skylake_nau8825_hw_params(struct snd_pcm_substream *substream,
struct snd_pcm_hw_params *params)+static int skylake_nau8825_trigger(struct snd_pcm_substream *substream, int cmd) { struct snd_soc_pcm_runtime *rtd = substream->private_data;
struct snd_pcm_runtime *runtime = substream->runtime; struct snd_soc_dai *codec_dai = asoc_rtd_to_codec(rtd, 0);
int ret;ret = snd_soc_dai_set_sysclk(codec_dai,NAU8825_CLK_MCLK, 24000000, SND_SOC_CLOCK_IN);if (ret < 0)dev_err(rtd->dev, "snd_soc_dai_set_sysclk err = %d\n", ret);
int ret = 0;switch (cmd) {case SNDRV_PCM_TRIGGER_START:/* Since 256xFS clocks cannot be generated by SKL, the NAU8825* is configured to re-generate its system clock from the BCLK* using the FLL.* We must switch system clock (FLL to use BCLK) here as it is* not given eariler by FW (like in hw_param). We let nau8825 to* use internal VCO clock till now which reduces the audiable* pop's. *//* fall through */case SNDRV_PCM_TRIGGER_RESUME:/* Once device resumes, the system will only enable power* sequence for playback without doing hardware parameter, audio* format, and PLL configure. In the mean time, the jack* detecion sequence has changed PLL parameters and switched to* internal clock. Thus, the playback signal distorted without* correct PLL parameters. Therefore we need to configure PLL* again */ret = snd_soc_dai_set_sysclk(codec_dai, NAU8825_CLK_FLL_FS, 0,SND_SOC_CLOCK_IN);if (ret < 0) {dev_err(codec_dai->dev, "can't set FS clock %d\n", ret);break;}ret = snd_soc_dai_set_pll(codec_dai, 0, 0, runtime->rate,runtime->rate * 256);if (ret < 0)dev_err(codec_dai->dev, "can't set FLL: %d\n", ret);break;} return ret;}
-static const struct snd_soc_ops skylake_nau8825_ops = {
.hw_params = skylake_nau8825_hw_params,+static struct snd_soc_ops skylake_nau8825_ops = {
.trigger = skylake_nau8825_trigger,};
static int skylake_dmic_fixup(struct snd_soc_pcm_runtime *rtd, diff --git a/sound/soc/intel/boards/skl_nau88l25_ssm4567.c b/sound/soc/intel/boards/skl_nau88l25_ssm4567.c index 4b317bcf6ea0..d076f19f9b78 100644 --- a/sound/soc/intel/boards/skl_nau88l25_ssm4567.c +++ b/sound/soc/intel/boards/skl_nau88l25_ssm4567.c @@ -12,6 +12,7 @@
#include <linux/module.h> #include <linux/platform_device.h> +#include <linux/delay.h> #include <sound/core.h> #include <sound/pcm.h> #include <sound/soc.h> @@ -57,12 +58,12 @@ static const struct snd_kcontrol_new skylake_controls[] = { };
static int platform_clock_control(struct snd_soc_dapm_widget *w,
struct snd_kcontrol *k, int event)
struct snd_kcontrol *k, int event){ struct snd_soc_dapm_context *dapm = w->dapm; struct snd_soc_card *card = dapm->card; struct snd_soc_dai *codec_dai;
int ret;
int ret = 0; codec_dai = snd_soc_card_get_codec_dai(card, SKL_NUVOTON_CODEC_DAI); if (!codec_dai) {@@ -70,14 +71,7 @@ static int platform_clock_control(struct snd_soc_dapm_widget *w, return -EIO; }
if (SND_SOC_DAPM_EVENT_ON(event)) {ret = snd_soc_dai_set_sysclk(codec_dai,NAU8825_CLK_MCLK, 24000000, SND_SOC_CLOCK_IN);if (ret < 0) {dev_err(card->dev, "set sysclk err = %d\n", ret);return -EIO;}} else {
if (!SND_SOC_DAPM_EVENT_ON(event)) { ret = snd_soc_dai_set_sysclk(codec_dai, NAU8825_CLK_INTERNAL, 0, SND_SOC_CLOCK_IN); if (ret < 0) {@@ -85,6 +79,7 @@ static int platform_clock_control(struct snd_soc_dapm_widget *w, return -EIO; } }
return ret;}
@@ -344,24 +339,51 @@ static int skylake_dmic_fixup(struct snd_soc_pcm_runtime *rtd, return 0; }
-static int skylake_nau8825_hw_params(struct snd_pcm_substream *substream,
struct snd_pcm_hw_params *params)+static int skylake_nau8825_trigger(struct snd_pcm_substream *substream, int cmd) { struct snd_soc_pcm_runtime *rtd = substream->private_data;
struct snd_pcm_runtime *runtime = substream->runtime; struct snd_soc_dai *codec_dai = asoc_rtd_to_codec(rtd, 0);
int ret;ret = snd_soc_dai_set_sysclk(codec_dai,NAU8825_CLK_MCLK, 24000000, SND_SOC_CLOCK_IN);if (ret < 0)dev_err(rtd->dev, "snd_soc_dai_set_sysclk err = %d\n", ret);
int ret = 0;switch (cmd) {case SNDRV_PCM_TRIGGER_START:/* Since 256xFS clocks cannot be generated by SKL, the NAU8825* is configured to re-generate its system clock from the BCLK* using the FLL.* We must switch system clock (FLL to use BCLK) here as it is* not given eariler by FW (like in hw_param). We let nau8825 to* use internal VCO clock till now which reduces the audiable* pop's. *//* fall through */case SNDRV_PCM_TRIGGER_RESUME:/* Once device resumes, the system will only enable power* sequence for playback without doing hardware parameter, audio* format, and PLL configure. In the mean time, the jack* detecion sequence has changed PLL parameters and switched to* internal clock. Thus, the playback signal distorted without* correct PLL parameters. Therefore we need to configure PLL* again */ret = snd_soc_dai_set_sysclk(codec_dai, NAU8825_CLK_FLL_FS, 0,SND_SOC_CLOCK_IN);if (ret < 0) {dev_err(codec_dai->dev, "can't set FS clock %d\n", ret);break;}ret = snd_soc_dai_set_pll(codec_dai, 0, 0, runtime->rate,runtime->rate * 256);if (ret < 0)dev_err(codec_dai->dev, "can't set FLL: %d\n", ret);break;} return ret;}
-static const struct snd_soc_ops skylake_nau8825_ops = {
.hw_params = skylake_nau8825_hw_params,+static struct snd_soc_ops skylake_nau8825_ops = {
.trigger = skylake_nau8825_trigger,};
static const unsigned int channels_dmic[] = { @@ -582,6 +604,7 @@ static struct snd_soc_dai_link skylake_dais[] = { .init = skylake_ssm4567_codec_init, .ignore_pmdown_time = 1, .be_hw_params_fixup = skylake_ssp_fixup,
.ops = &skylake_nau8825_ops, .dpcm_playback = 1, .dpcm_capture = 1, SND_SOC_DAILINK_REG(ssp0_pin, ssp0_codec, platform),-- 2.17.1