diff options
| author | Peter Ujfalusi <peter.ujfalusi@linux.intel.com> | 2023-04-04 12:21:08 +0300 |
|---|---|---|
| committer | Mark Brown <broonie@kernel.org> | 2023-04-04 12:42:36 +0100 |
| commit | 1f7b5d52be130e16fda60be446b30136698738c6 (patch) | |
| tree | 6a418d41d6a9ec608e3456bbc313bd00008e55b4 /sound/soc/sof/intel/hda-stream.c | |
| parent | 4a3b1433a8d384ff8d668b4f8665d6c67dbb30d3 (diff) | |
| download | lwn-1f7b5d52be130e16fda60be446b30136698738c6.tar.gz lwn-1f7b5d52be130e16fda60be446b30136698738c6.zip | |
ASoC: SOF: Intel: hda: Add support for DSPless mode
Via the SOF_DBG_DSPLESS_MODE sof_debug flag the SOF stack can be asked to
not use the DSP for audio.
The use of DSPless mode is governed by the sdev->dspless_mode_selected
flag which is only going to be set if the user sets sof_debug=0x8000 and
the platform advertises that the DSPless mode is supported on them.
Signed-off-by: Peter Ujfalusi <peter.ujfalusi@linux.intel.com>
Reviewed-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Reviewed-by: Ranjani Sridharan <ranjani.sridharan@linux.intel.com>
Reviewed-by: Rander Wang <rander.wang@intel.com>
Link: https://lore.kernel.org/r/20230404092115.27949-6-peter.ujfalusi@linux.intel.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Diffstat (limited to 'sound/soc/sof/intel/hda-stream.c')
| -rw-r--r-- | sound/soc/sof/intel/hda-stream.c | 34 |
1 files changed, 18 insertions, 16 deletions
diff --git a/sound/soc/sof/intel/hda-stream.c b/sound/soc/sof/intel/hda-stream.c index 50e92996f928..87e31a65b314 100644 --- a/sound/soc/sof/intel/hda-stream.c +++ b/sound/soc/sof/intel/hda-stream.c @@ -503,11 +503,12 @@ int hda_dsp_stream_hw_params(struct snd_sof_dev *sdev, hstream = &hext_stream->hstream; sd_offset = SOF_STREAM_SD_OFFSET(hstream); + mask = BIT(hstream->index); - /* decouple host and link DMA */ - mask = 0x1 << hstream->index; - snd_sof_dsp_update_bits(sdev, HDA_DSP_PP_BAR, SOF_HDA_REG_PP_PPCTL, - mask, mask); + /* decouple host and link DMA if the DSP is used */ + if (!sdev->dspless_mode_selected) + snd_sof_dsp_update_bits(sdev, HDA_DSP_PP_BAR, SOF_HDA_REG_PP_PPCTL, + mask, mask); /* clear stream status */ snd_sof_dsp_update_bits(sdev, HDA_DSP_HDA_BAR, sd_offset, @@ -608,11 +609,10 @@ int hda_dsp_stream_hw_params(struct snd_sof_dev *sdev, * enable decoupled mode */ - if (chip->quirks & SOF_INTEL_PROCEN_FMT_QUIRK) { + if (!sdev->dspless_mode_selected && (chip->quirks & SOF_INTEL_PROCEN_FMT_QUIRK)) /* couple host and link DMA, disable DSP features */ snd_sof_dsp_update_bits(sdev, HDA_DSP_PP_BAR, SOF_HDA_REG_PP_PPCTL, mask, 0); - } /* program stream format */ snd_sof_dsp_update_bits(sdev, HDA_DSP_HDA_BAR, @@ -620,11 +620,10 @@ int hda_dsp_stream_hw_params(struct snd_sof_dev *sdev, SOF_HDA_ADSP_REG_SD_FORMAT, 0xffff, hstream->format_val); - if (chip->quirks & SOF_INTEL_PROCEN_FMT_QUIRK) { + if (!sdev->dspless_mode_selected && (chip->quirks & SOF_INTEL_PROCEN_FMT_QUIRK)) /* decouple host and link DMA, enable DSP features */ snd_sof_dsp_update_bits(sdev, HDA_DSP_PP_BAR, SOF_HDA_REG_PP_PPCTL, mask, mask); - } /* program last valid index */ snd_sof_dsp_update_bits(sdev, HDA_DSP_HDA_BAR, @@ -677,20 +676,23 @@ int hda_dsp_stream_hw_free(struct snd_sof_dev *sdev, struct hdac_ext_stream *hext_stream = container_of(hstream, struct hdac_ext_stream, hstream); - struct hdac_bus *bus = sof_to_bus(sdev); - u32 mask = 0x1 << hstream->index; int ret; ret = hda_dsp_stream_reset(sdev, hstream); if (ret < 0) return ret; - spin_lock_irq(&bus->reg_lock); - /* couple host and link DMA if link DMA channel is idle */ - if (!hext_stream->link_locked) - snd_sof_dsp_update_bits(sdev, HDA_DSP_PP_BAR, - SOF_HDA_REG_PP_PPCTL, mask, 0); - spin_unlock_irq(&bus->reg_lock); + if (!sdev->dspless_mode_selected) { + struct hdac_bus *bus = sof_to_bus(sdev); + u32 mask = BIT(hstream->index); + + spin_lock_irq(&bus->reg_lock); + /* couple host and link DMA if link DMA channel is idle */ + if (!hext_stream->link_locked) + snd_sof_dsp_update_bits(sdev, HDA_DSP_PP_BAR, + SOF_HDA_REG_PP_PPCTL, mask, 0); + spin_unlock_irq(&bus->reg_lock); + } hda_dsp_stream_spib_config(sdev, hext_stream, HDA_DSP_SPIB_DISABLE, 0); |