| Message ID | 1552022165-32599-1-git-send-email-mac.chiang@intel.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | [v3] ASoC: Intel: boards: kbl_da7219_max98927: add dai_trigger function | expand |
On 3/7/19 11:16 PM, mac.chiang@intel.com wrote: > From: Mac Chiang <mac.chiang@intel.com> > > amplifier feedback is not modeled as being dependent on any active output. > Even when there is no playback happening, parts of the graph, specifically the IV > sense->speaker protection->output remains active and this prevents the DSP from > entering low-power states. > > This patch suggest a machine driver level approach where the speaker > pins are enabled/disabled dynamically depending on stream start/stop > events. DPAM graph representations show the feedback loop is indeed > disabled and low-power states can be reached. I can't think of a better solution so Acked-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com> > > Signed-off-by: Jenny TC <jenny.tc@intel.com> > Signed-off-by: Harshapriya.n <harshapriya.n@intel.com> > Signed-off-by: Mac Chiang <mac.chiang@intel.com> > --- > Changelog: > v3: > - fixed the return logic at the end of kabylake_card_late_probe() > v2: > - described clearly in commit message > - added snd_soc_dapm_disable_pin in kabylake_card_late_probe() > --- > sound/soc/intel/boards/kbl_da7219_max98927.c | 71 +++++++++++++++++++++++++++- > 1 file changed, 69 insertions(+), 2 deletions(-) > > diff --git a/sound/soc/intel/boards/kbl_da7219_max98927.c b/sound/soc/intel/boards/kbl_da7219_max98927.c > index 723a493..a9dcc0a 100644 > --- a/sound/soc/intel/boards/kbl_da7219_max98927.c > +++ b/sound/soc/intel/boards/kbl_da7219_max98927.c > @@ -195,8 +195,58 @@ static int kabylake_ssp0_hw_params(struct snd_pcm_substream *substream, > return 0; > } > > +static int kabylake_ssp0_trigger(struct snd_pcm_substream *substream, int cmd) > +{ > + struct snd_soc_pcm_runtime *rtd = substream->private_data; > + int j, ret; > + > + for (j = 0; j < rtd->num_codecs; j++) { > + struct snd_soc_dai *codec_dai = rtd->codec_dais[j]; > + const char *name = codec_dai->component->name; > + struct snd_soc_component *component = codec_dai->component; > + struct snd_soc_dapm_context *dapm = > + snd_soc_component_get_dapm(component); > + char pin_name[20]; > + > + if (strcmp(name, MAXIM_DEV0_NAME) && > + strcmp(name, MAXIM_DEV1_NAME)) > + continue; > + > + snprintf(pin_name, ARRAY_SIZE(pin_name), "%s Spk", > + codec_dai->component->name_prefix); > + > + switch (cmd) { > + case SNDRV_PCM_TRIGGER_START: > + case SNDRV_PCM_TRIGGER_RESUME: > + case SNDRV_PCM_TRIGGER_PAUSE_RELEASE: > + ret = snd_soc_dapm_enable_pin(dapm, pin_name); > + if (ret) { > + dev_err(rtd->dev, "failed to enable %s: %d\n", > + pin_name, ret); > + return ret; > + } > + snd_soc_dapm_sync(dapm); > + break; > + case SNDRV_PCM_TRIGGER_STOP: > + case SNDRV_PCM_TRIGGER_SUSPEND: > + case SNDRV_PCM_TRIGGER_PAUSE_PUSH: > + ret = snd_soc_dapm_disable_pin(dapm, pin_name); > + if (ret) { > + dev_err(rtd->dev, "failed to disable %s: %d\n", > + pin_name, ret); > + return ret; > + } > + snd_soc_dapm_sync(dapm); > + break; > + } > + } > + > + return 0; > +} > + > static struct snd_soc_ops kabylake_ssp0_ops = { > .hw_params = kabylake_ssp0_hw_params, > + .trigger = kabylake_ssp0_trigger, > }; > > static int kabylake_ssp_fixup(struct snd_soc_pcm_runtime *rtd, > @@ -864,6 +914,7 @@ static int kabylake_card_late_probe(struct snd_soc_card *card) > { > struct kbl_codec_private *ctx = snd_soc_card_get_drvdata(card); > struct kbl_hdmi_pcm *pcm; > + struct snd_soc_dapm_context *dapm = &card->dapm; > struct snd_soc_component *component = NULL; > int err, i = 0; > char jack_name[NAME_SIZE]; > @@ -890,9 +941,25 @@ static int kabylake_card_late_probe(struct snd_soc_card *card) > if (!component) > return -EINVAL; > > - return hdac_hdmi_jack_port_init(component, &card->dapm); > > - return 0; > + err = hdac_hdmi_jack_port_init(component, &card->dapm); > + > + if (err < 0) > + return err; > + > + err = snd_soc_dapm_disable_pin(dapm, "Left Spk"); > + if (err) { > + dev_err(card->dev, "failed to disable Left Spk: %d\n", err); > + return err; > + } > + > + err = snd_soc_dapm_disable_pin(dapm, "Right Spk"); > + if (err) { > + dev_err(card->dev, "failed to disable Right Spk: %d\n", err); > + return err; > + } > + > + return snd_soc_dapm_sync(dapm); > } > > /* kabylake audio machine driver for SPT + DA7219 */
diff --git a/sound/soc/intel/boards/kbl_da7219_max98927.c b/sound/soc/intel/boards/kbl_da7219_max98927.c index 723a493..a9dcc0a 100644 --- a/sound/soc/intel/boards/kbl_da7219_max98927.c +++ b/sound/soc/intel/boards/kbl_da7219_max98927.c @@ -195,8 +195,58 @@ static int kabylake_ssp0_hw_params(struct snd_pcm_substream *substream, return 0; } +static int kabylake_ssp0_trigger(struct snd_pcm_substream *substream, int cmd) +{ + struct snd_soc_pcm_runtime *rtd = substream->private_data; + int j, ret; + + for (j = 0; j < rtd->num_codecs; j++) { + struct snd_soc_dai *codec_dai = rtd->codec_dais[j]; + const char *name = codec_dai->component->name; + struct snd_soc_component *component = codec_dai->component; + struct snd_soc_dapm_context *dapm = + snd_soc_component_get_dapm(component); + char pin_name[20]; + + if (strcmp(name, MAXIM_DEV0_NAME) && + strcmp(name, MAXIM_DEV1_NAME)) + continue; + + snprintf(pin_name, ARRAY_SIZE(pin_name), "%s Spk", + codec_dai->component->name_prefix); + + switch (cmd) { + case SNDRV_PCM_TRIGGER_START: + case SNDRV_PCM_TRIGGER_RESUME: + case SNDRV_PCM_TRIGGER_PAUSE_RELEASE: + ret = snd_soc_dapm_enable_pin(dapm, pin_name); + if (ret) { + dev_err(rtd->dev, "failed to enable %s: %d\n", + pin_name, ret); + return ret; + } + snd_soc_dapm_sync(dapm); + break; + case SNDRV_PCM_TRIGGER_STOP: + case SNDRV_PCM_TRIGGER_SUSPEND: + case SNDRV_PCM_TRIGGER_PAUSE_PUSH: + ret = snd_soc_dapm_disable_pin(dapm, pin_name); + if (ret) { + dev_err(rtd->dev, "failed to disable %s: %d\n", + pin_name, ret); + return ret; + } + snd_soc_dapm_sync(dapm); + break; + } + } + + return 0; +} + static struct snd_soc_ops kabylake_ssp0_ops = { .hw_params = kabylake_ssp0_hw_params, + .trigger = kabylake_ssp0_trigger, }; static int kabylake_ssp_fixup(struct snd_soc_pcm_runtime *rtd, @@ -864,6 +914,7 @@ static int kabylake_card_late_probe(struct snd_soc_card *card) { struct kbl_codec_private *ctx = snd_soc_card_get_drvdata(card); struct kbl_hdmi_pcm *pcm; + struct snd_soc_dapm_context *dapm = &card->dapm; struct snd_soc_component *component = NULL; int err, i = 0; char jack_name[NAME_SIZE]; @@ -890,9 +941,25 @@ static int kabylake_card_late_probe(struct snd_soc_card *card) if (!component) return -EINVAL; - return hdac_hdmi_jack_port_init(component, &card->dapm); - return 0; + err = hdac_hdmi_jack_port_init(component, &card->dapm); + + if (err < 0) + return err; + + err = snd_soc_dapm_disable_pin(dapm, "Left Spk"); + if (err) { + dev_err(card->dev, "failed to disable Left Spk: %d\n", err); + return err; + } + + err = snd_soc_dapm_disable_pin(dapm, "Right Spk"); + if (err) { + dev_err(card->dev, "failed to disable Right Spk: %d\n", err); + return err; + } + + return snd_soc_dapm_sync(dapm); } /* kabylake audio machine driver for SPT + DA7219 */