diff options
Diffstat (limited to 'sound/soc/sof/intel/hda-pcm.c')
| -rw-r--r-- | sound/soc/sof/intel/hda-pcm.c | 56 |
1 files changed, 42 insertions, 14 deletions
diff --git a/sound/soc/sof/intel/hda-pcm.c b/sound/soc/sof/intel/hda-pcm.c index f6e24edd7adb..da6c1e7263cd 100644 --- a/sound/soc/sof/intel/hda-pcm.c +++ b/sound/soc/sof/intel/hda-pcm.c @@ -29,6 +29,8 @@ #define SDnFMT_BITS(x) ((x) << 4) #define SDnFMT_CHAN(x) ((x) << 0) +#define HDA_MAX_PERIOD_TIME_HEADROOM 10 + static bool hda_always_enable_dmi_l1; module_param_named(always_enable_dmi_l1, hda_always_enable_dmi_l1, bool, 0444); MODULE_PARM_DESC(always_enable_dmi_l1, "SOF HDA always enable DMI l1"); @@ -37,6 +39,11 @@ static bool hda_disable_rewinds; module_param_named(disable_rewinds, hda_disable_rewinds, bool, 0444); MODULE_PARM_DESC(disable_rewinds, "SOF HDA disable rewinds"); +static int hda_force_pause_support = -1; +module_param_named(force_pause_support, hda_force_pause_support, int, 0444); +MODULE_PARM_DESC(force_pause_support, + "Pause support: -1: Use default, 0: Disable, 1: Enable (default -1)"); + u32 hda_dsp_get_mult_div(struct snd_sof_dev *sdev, int rate) { switch (rate) { @@ -142,7 +149,7 @@ int hda_dsp_pcm_hw_params(struct snd_sof_dev *sdev, return 0; } -EXPORT_SYMBOL_NS(hda_dsp_pcm_hw_params, SND_SOC_SOF_INTEL_HDA_COMMON); +EXPORT_SYMBOL_NS(hda_dsp_pcm_hw_params, "SND_SOC_SOF_INTEL_HDA_COMMON"); /* update SPIB register with appl position */ int hda_dsp_pcm_ack(struct snd_sof_dev *sdev, struct snd_pcm_substream *substream) @@ -165,7 +172,7 @@ int hda_dsp_pcm_ack(struct snd_sof_dev *sdev, struct snd_pcm_substream *substrea return 0; } -EXPORT_SYMBOL_NS(hda_dsp_pcm_ack, SND_SOC_SOF_INTEL_HDA_COMMON); +EXPORT_SYMBOL_NS(hda_dsp_pcm_ack, "SND_SOC_SOF_INTEL_HDA_COMMON"); int hda_dsp_pcm_trigger(struct snd_sof_dev *sdev, struct snd_pcm_substream *substream, int cmd) @@ -175,7 +182,7 @@ int hda_dsp_pcm_trigger(struct snd_sof_dev *sdev, return hda_dsp_stream_trigger(sdev, hext_stream, cmd); } -EXPORT_SYMBOL_NS(hda_dsp_pcm_trigger, SND_SOC_SOF_INTEL_HDA_COMMON); +EXPORT_SYMBOL_NS(hda_dsp_pcm_trigger, "SND_SOC_SOF_INTEL_HDA_COMMON"); snd_pcm_uframes_t hda_dsp_pcm_pointer(struct snd_sof_dev *sdev, struct snd_pcm_substream *substream) @@ -207,7 +214,7 @@ found: trace_sof_intel_hda_dsp_pcm(sdev, hstream, substream, pos); return pos; } -EXPORT_SYMBOL_NS(hda_dsp_pcm_pointer, SND_SOC_SOF_INTEL_HDA_COMMON); +EXPORT_SYMBOL_NS(hda_dsp_pcm_pointer, "SND_SOC_SOF_INTEL_HDA_COMMON"); int hda_dsp_pcm_open(struct snd_sof_dev *sdev, struct snd_pcm_substream *substream) @@ -240,6 +247,16 @@ int hda_dsp_pcm_open(struct snd_sof_dev *sdev, if (hda_always_enable_dmi_l1 && direction == SNDRV_PCM_STREAM_CAPTURE) runtime->hw.info &= ~SNDRV_PCM_INFO_PAUSE; + /* + * Do not advertise the PAUSE support if it is forced to be disabled via + * module parameter or if the pause_supported is false for the PCM + * device + */ + if (hda_force_pause_support == 0 || + (hda_force_pause_support == -1 && + !spcm->stream[substream->stream].pause_supported)) + runtime->hw.info &= ~SNDRV_PCM_INFO_PAUSE; + if (hda_always_enable_dmi_l1 || direction == SNDRV_PCM_STREAM_PLAYBACK || spcm->stream[substream->stream].d0i3_compatible) @@ -276,19 +293,30 @@ int hda_dsp_pcm_open(struct snd_sof_dev *sdev, * On playback start the DMA will transfer dsp_max_burst_size_in_ms * amount of data in one initial burst to fill up the host DMA buffer. * Consequent DMA burst sizes are shorter and their length can vary. - * To make sure that userspace allocate large enough ALSA buffer we need - * to place a constraint on the buffer time. + * To avoid immediate xrun by the initial burst we need to place + * constraint on the period size (via PERIOD_TIME) to cover the size of + * the host buffer. + * We need to add headroom of max 10ms as the firmware needs time to + * settle to the 1ms pacing and initially it can run faster for few + * internal periods. * * On capture the DMA will transfer 1ms chunks. - * - * Exact dsp_max_burst_size_in_ms constraint is racy, so set the - * constraint to a minimum of 2x dsp_max_burst_size_in_ms. */ - if (spcm->stream[direction].dsp_max_burst_size_in_ms) + if (spcm->stream[direction].dsp_max_burst_size_in_ms) { + unsigned int period_time = spcm->stream[direction].dsp_max_burst_size_in_ms; + + /* + * add headroom over the maximum burst size to cover the time + * needed for the DMA pace to settle. + * Limit the headroom time to HDA_MAX_PERIOD_TIME_HEADROOM + */ + period_time += min(period_time, HDA_MAX_PERIOD_TIME_HEADROOM); + snd_pcm_hw_constraint_minmax(substream->runtime, - SNDRV_PCM_HW_PARAM_BUFFER_TIME, - spcm->stream[direction].dsp_max_burst_size_in_ms * USEC_PER_MSEC * 2, + SNDRV_PCM_HW_PARAM_PERIOD_TIME, + period_time * USEC_PER_MSEC, UINT_MAX); + } /* binding pcm substream to hda stream */ substream->runtime->private_data = &dsp_stream->hstream; @@ -302,7 +330,7 @@ int hda_dsp_pcm_open(struct snd_sof_dev *sdev, return 0; } -EXPORT_SYMBOL_NS(hda_dsp_pcm_open, SND_SOC_SOF_INTEL_HDA_COMMON); +EXPORT_SYMBOL_NS(hda_dsp_pcm_open, "SND_SOC_SOF_INTEL_HDA_COMMON"); int hda_dsp_pcm_close(struct snd_sof_dev *sdev, struct snd_pcm_substream *substream) @@ -322,4 +350,4 @@ int hda_dsp_pcm_close(struct snd_sof_dev *sdev, substream->runtime->private_data = NULL; return 0; } -EXPORT_SYMBOL_NS(hda_dsp_pcm_close, SND_SOC_SOF_INTEL_HDA_COMMON); +EXPORT_SYMBOL_NS(hda_dsp_pcm_close, "SND_SOC_SOF_INTEL_HDA_COMMON"); |