diff options
Diffstat (limited to 'sound/soc/sof/intel/hda-pcm.c')
| -rw-r--r-- | sound/soc/sof/intel/hda-pcm.c | 75 |
1 files changed, 72 insertions, 3 deletions
diff --git a/sound/soc/sof/intel/hda-pcm.c b/sound/soc/sof/intel/hda-pcm.c index f23c72cdff48..da6c1e7263cd 100644 --- a/sound/soc/sof/intel/hda-pcm.c +++ b/sound/soc/sof/intel/hda-pcm.c @@ -3,7 +3,7 @@ // This file is provided under a dual BSD/GPLv2 license. When using or // redistributing this file, you may do so under either license. // -// Copyright(c) 2018 Intel Corporation. All rights reserved. +// Copyright(c) 2018 Intel Corporation // // Authors: Liam Girdwood <liam.r.girdwood@linux.intel.com> // Ranjani Sridharan <ranjani.sridharan@linux.intel.com> @@ -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) { @@ -142,6 +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"); /* update SPIB register with appl position */ int hda_dsp_pcm_ack(struct snd_sof_dev *sdev, struct snd_pcm_substream *substream) @@ -164,6 +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"); int hda_dsp_pcm_trigger(struct snd_sof_dev *sdev, struct snd_pcm_substream *substream, int cmd) @@ -173,11 +182,12 @@ 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"); snd_pcm_uframes_t hda_dsp_pcm_pointer(struct snd_sof_dev *sdev, struct snd_pcm_substream *substream) { - struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream); + struct snd_soc_pcm_runtime *rtd = snd_soc_substream_to_rtd(substream); struct snd_soc_component *scomp = sdev->component; struct hdac_stream *hstream = substream->runtime->private_data; struct sof_intel_hda_dev *hda = sdev->pdata->hw_pdata; @@ -204,11 +214,12 @@ 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"); int hda_dsp_pcm_open(struct snd_sof_dev *sdev, struct snd_pcm_substream *substream) { - struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream); + struct snd_soc_pcm_runtime *rtd = snd_soc_substream_to_rtd(substream); struct snd_pcm_runtime *runtime = substream->runtime; struct snd_soc_component *scomp = sdev->component; struct hdac_ext_stream *dsp_stream; @@ -236,6 +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) @@ -254,15 +275,62 @@ int hda_dsp_pcm_open(struct snd_sof_dev *sdev, snd_pcm_hw_constraint_integer(substream->runtime, SNDRV_PCM_HW_PARAM_PERIODS); + /* Limit the maximum number of periods to not exceed the BDL entries count */ + if (runtime->hw.periods_max > HDA_DSP_MAX_BDL_ENTRIES) + snd_pcm_hw_constraint_minmax(runtime, SNDRV_PCM_HW_PARAM_PERIODS, + runtime->hw.periods_min, + HDA_DSP_MAX_BDL_ENTRIES); + /* Only S16 and S32 supported by HDA hardware when used without DSP */ if (sdev->dspless_mode_selected) snd_pcm_hw_constraint_mask64(substream->runtime, SNDRV_PCM_HW_PARAM_FORMAT, SNDRV_PCM_FMTBIT_S16 | SNDRV_PCM_FMTBIT_S32); + /* + * The dsp_max_burst_size_in_ms is the length of the maximum burst size + * of the host DMA in the ALSA buffer. + * + * 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 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. + */ + 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_PERIOD_TIME, + period_time * USEC_PER_MSEC, + UINT_MAX); + } + /* binding pcm substream to hda stream */ substream->runtime->private_data = &dsp_stream->hstream; + + /* + * Reset the llp cache values (they are used for LLP compensation in + * case the counter is not reset) + */ + dsp_stream->pplcllpl = 0; + dsp_stream->pplcllpu = 0; + return 0; } +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) @@ -282,3 +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"); |