From: Amadeusz Sławiński amadeuszx.slawinski@linux.intel.com
[ Upstream commit 0dbb186c3510cad4e9f443e801bf2e6ab5770c00 ]
Function snd_pcm_period_elapsed() is part of sequence servicing HDAudio stream IRQs. It's called under Global Interrupt Enable (GIE) disabled - no HDAudio interrupts will be raised. At the same time, the function may end up calling __snd_pcm_xrun() or snd_pcm_drain_done(). On the avs-driver side, this translates to IPCs and as GIE is disabled, these will never complete successfully.
Improve system stability by scheduling stream-IRQ handling in a separate thread.
Signed-off-by: Amadeusz Sławiński amadeuszx.slawinski@linux.intel.com Reviewed-by: Cezary Rojewski cezary.rojewski@intel.com Link: https://patch.msgid.link/20241008083758.756578-1-amadeuszx.slawinski@linux.i... Signed-off-by: Mark Brown broonie@kernel.org Signed-off-by: Sasha Levin sashal@kernel.org --- sound/soc/intel/avs/core.c | 3 ++- sound/soc/intel/avs/pcm.c | 19 +++++++++++++++++++ sound/soc/intel/avs/pcm.h | 16 ++++++++++++++++ 3 files changed, 37 insertions(+), 1 deletion(-) create mode 100644 sound/soc/intel/avs/pcm.h
diff --git a/sound/soc/intel/avs/core.c b/sound/soc/intel/avs/core.c index f2dc82a2abc71..4d1e6c84918c6 100644 --- a/sound/soc/intel/avs/core.c +++ b/sound/soc/intel/avs/core.c @@ -28,6 +28,7 @@ #include "avs.h" #include "cldma.h" #include "messages.h" +#include "pcm.h"
static u32 pgctl_mask = AZX_PGCTL_LSRMD_MASK; module_param(pgctl_mask, uint, 0444); @@ -247,7 +248,7 @@ static void hdac_stream_update_pos(struct hdac_stream *stream, u64 buffer_size) static void hdac_update_stream(struct hdac_bus *bus, struct hdac_stream *stream) { if (stream->substream) { - snd_pcm_period_elapsed(stream->substream); + avs_period_elapsed(stream->substream); } else if (stream->cstream) { u64 buffer_size = stream->cstream->runtime->buffer_size;
diff --git a/sound/soc/intel/avs/pcm.c b/sound/soc/intel/avs/pcm.c index c76b86254a8b4..37b1880c81141 100644 --- a/sound/soc/intel/avs/pcm.c +++ b/sound/soc/intel/avs/pcm.c @@ -16,6 +16,7 @@ #include <sound/soc-component.h> #include "avs.h" #include "path.h" +#include "pcm.h" #include "topology.h" #include "../../codecs/hda.h"
@@ -30,6 +31,7 @@ struct avs_dma_data { struct hdac_ext_stream *host_stream; };
+ struct work_struct period_elapsed_work; struct snd_pcm_substream *substream; };
@@ -56,6 +58,22 @@ avs_dai_find_path_template(struct snd_soc_dai *dai, bool is_fe, int direction) return dw->priv; }
+static void avs_period_elapsed_work(struct work_struct *work) +{ + struct avs_dma_data *data = container_of(work, struct avs_dma_data, period_elapsed_work); + + snd_pcm_period_elapsed(data->substream); +} + +void avs_period_elapsed(struct snd_pcm_substream *substream) +{ + struct snd_soc_pcm_runtime *rtd = snd_soc_substream_to_rtd(substream); + struct snd_soc_dai *dai = snd_soc_rtd_to_cpu(rtd, 0); + struct avs_dma_data *data = snd_soc_dai_get_dma_data(dai, substream); + + schedule_work(&data->period_elapsed_work); +} + static int avs_dai_startup(struct snd_pcm_substream *substream, struct snd_soc_dai *dai) { struct snd_soc_pcm_runtime *rtd = snd_soc_substream_to_rtd(substream); @@ -77,6 +95,7 @@ static int avs_dai_startup(struct snd_pcm_substream *substream, struct snd_soc_d data->substream = substream; data->template = template; data->adev = adev; + INIT_WORK(&data->period_elapsed_work, avs_period_elapsed_work); snd_soc_dai_set_dma_data(dai, substream, data);
if (rtd->dai_link->ignore_suspend) diff --git a/sound/soc/intel/avs/pcm.h b/sound/soc/intel/avs/pcm.h new file mode 100644 index 0000000000000..0f3615c903982 --- /dev/null +++ b/sound/soc/intel/avs/pcm.h @@ -0,0 +1,16 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ +/* + * Copyright(c) 2024 Intel Corporation + * + * Authors: Cezary Rojewski cezary.rojewski@intel.com + * Amadeusz Slawinski amadeuszx.slawinski@linux.intel.com + */ + +#ifndef __SOUND_SOC_INTEL_AVS_PCM_H +#define __SOUND_SOC_INTEL_AVS_PCM_H + +#include <sound/pcm.h> + +void avs_period_elapsed(struct snd_pcm_substream *substream); + +#endif