From: Ranjani Sridharan ranjani.sridharan@linux.intel.com
Host and link DMA are decoupled during FE hw_params. So, they must be coupled in hw_free if the link DMA channel is idle.
Signed-off-by: Ranjani Sridharan ranjani.sridharan@linux.intel.com Signed-off-by: Pierre-Louis Bossart pierre-louis.bossart@linux.intel.com --- sound/soc/sof/intel/apl.c | 1 + sound/soc/sof/intel/cnl.c | 1 + sound/soc/sof/intel/hda-stream.c | 20 ++++++++++++++++++++ sound/soc/sof/intel/hda.h | 2 ++ sound/soc/sof/ops.h | 11 +++++++++++ sound/soc/sof/pcm.c | 7 +++++++ sound/soc/sof/sof-priv.h | 4 ++++ 7 files changed, 46 insertions(+)
diff --git a/sound/soc/sof/intel/apl.c b/sound/soc/sof/intel/apl.c index f215d80dce2c..43d1c9f31ec4 100644 --- a/sound/soc/sof/intel/apl.c +++ b/sound/soc/sof/intel/apl.c @@ -61,6 +61,7 @@ const struct snd_sof_dsp_ops sof_apl_ops = { .pcm_open = hda_dsp_pcm_open, .pcm_close = hda_dsp_pcm_close, .pcm_hw_params = hda_dsp_pcm_hw_params, + .pcm_hw_free = hda_dsp_stream_hw_free, .pcm_trigger = hda_dsp_pcm_trigger, .pcm_pointer = hda_dsp_pcm_pointer,
diff --git a/sound/soc/sof/intel/cnl.c b/sound/soc/sof/intel/cnl.c index d59305787fc3..3840f81767fa 100644 --- a/sound/soc/sof/intel/cnl.c +++ b/sound/soc/sof/intel/cnl.c @@ -219,6 +219,7 @@ const struct snd_sof_dsp_ops sof_cnl_ops = { .pcm_open = hda_dsp_pcm_open, .pcm_close = hda_dsp_pcm_close, .pcm_hw_params = hda_dsp_pcm_hw_params, + .pcm_hw_free = hda_dsp_stream_hw_free, .pcm_trigger = hda_dsp_pcm_trigger, .pcm_pointer = hda_dsp_pcm_pointer,
diff --git a/sound/soc/sof/intel/hda-stream.c b/sound/soc/sof/intel/hda-stream.c index a3f7c91469ec..ff6ab0c45d8e 100644 --- a/sound/soc/sof/intel/hda-stream.c +++ b/sound/soc/sof/intel/hda-stream.c @@ -438,6 +438,26 @@ int hda_dsp_stream_hw_params(struct snd_sof_dev *sdev, return ret; }
+int hda_dsp_stream_hw_free(struct snd_sof_dev *sdev, + struct snd_pcm_substream *substream) +{ + struct hdac_stream *stream = substream->runtime->private_data; + struct hdac_ext_stream *link_dev = container_of(stream, + struct hdac_ext_stream, + hstream); + struct hdac_bus *bus = sof_to_bus(sdev); + u32 mask = 0x1 << stream->index; + + spin_lock(&bus->reg_lock); + /* couple host and link DMA if link DMA channel is idle */ + if (!link_dev->link_locked) + snd_sof_dsp_update_bits(sdev, HDA_DSP_PP_BAR, + SOF_HDA_REG_PP_PPCTL, mask, 0); + spin_unlock(&bus->reg_lock); + + return 0; +} + irqreturn_t hda_dsp_stream_interrupt(int irq, void *context) { struct hdac_bus *bus = context; diff --git a/sound/soc/sof/intel/hda.h b/sound/soc/sof/intel/hda.h index 327621ef5cf3..8812dae9cf7a 100644 --- a/sound/soc/sof/intel/hda.h +++ b/sound/soc/sof/intel/hda.h @@ -468,6 +468,8 @@ int hda_dsp_pcm_hw_params(struct snd_sof_dev *sdev, struct snd_pcm_substream *substream, struct snd_pcm_hw_params *params, struct sof_ipc_stream_params *ipc_params); +int hda_dsp_stream_hw_free(struct snd_sof_dev *sdev, + struct snd_pcm_substream *substream); int hda_dsp_pcm_trigger(struct snd_sof_dev *sdev, struct snd_pcm_substream *substream, int cmd); snd_pcm_uframes_t hda_dsp_pcm_pointer(struct snd_sof_dev *sdev, diff --git a/sound/soc/sof/ops.h b/sound/soc/sof/ops.h index a23297353750..45a3d1091163 100644 --- a/sound/soc/sof/ops.h +++ b/sound/soc/sof/ops.h @@ -287,6 +287,17 @@ snd_sof_pcm_platform_hw_params(struct snd_sof_dev *sdev, return 0; }
+/* host stream hw free */ +static inline int +snd_sof_pcm_platform_hw_free(struct snd_sof_dev *sdev, + struct snd_pcm_substream *substream) +{ + if (sof_ops(sdev) && sof_ops(sdev)->pcm_hw_free) + return sof_ops(sdev)->pcm_hw_free(sdev, substream); + + return 0; +} + /* host stream trigger */ static inline int snd_sof_pcm_platform_trigger(struct snd_sof_dev *sdev, diff --git a/sound/soc/sof/pcm.c b/sound/soc/sof/pcm.c index 6dc5f97be0bc..334e9d59b1ba 100644 --- a/sound/soc/sof/pcm.c +++ b/sound/soc/sof/pcm.c @@ -251,6 +251,13 @@ static int sof_pcm_hw_free(struct snd_pcm_substream *substream)
cancel_work_sync(&spcm->stream[substream->stream].period_elapsed_work);
+ if (ret < 0) + return ret; + + ret = snd_sof_pcm_platform_hw_free(sdev, substream); + if (ret < 0) + dev_err(sdev->dev, "error: platform hw free failed\n"); + return ret; }
diff --git a/sound/soc/sof/sof-priv.h b/sound/soc/sof/sof-priv.h index 4d8c06eaf571..e04418615129 100644 --- a/sound/soc/sof/sof-priv.h +++ b/sound/soc/sof/sof-priv.h @@ -143,6 +143,10 @@ struct snd_sof_dsp_ops { struct snd_pcm_hw_params *params, struct sof_ipc_stream_params *ipc_params); /* optional */
+ /* host stream hw_free */ + int (*pcm_hw_free)(struct snd_sof_dev *sdev, + struct snd_pcm_substream *substream); /* optional */ + /* host stream trigger */ int (*pcm_trigger)(struct snd_sof_dev *sdev, struct snd_pcm_substream *substream,