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| author | Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com> | 2023-04-04 13:41:27 +0300 |
|---|---|---|
| committer | Mark Brown <broonie@kernel.org> | 2023-04-06 18:45:50 +0300 |
| commit | 681f27f302ff85ddf3f6e7fd0231059f99c0f26e (patch) | |
| tree | 170c3bf5b1845d23975775fafec7e26dcc60f124 | |
| parent | 82958c406da4fec8f818826624c33cf2e62f4147 (diff) | |
| download | linux-681f27f302ff85ddf3f6e7fd0231059f99c0f26e.tar.xz | |
ASoC: SOF: Intel: hda-mlink: add helper to retrieve eml_lock
For SoundWire usages, we need to use the global eml_lock to
serialize/protect all accesses to shared registers. Due to the split
implementation across two subsystems, we need to pass a pointer
around.
Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Reviewed-by: Rander Wang <rander.wang@intel.com>
Reviewed-by: Péter Ujfalusi <peter.ujfalusi@linux.intel.com>
Reviewed-by: Ranjani Sridharan <ranjani.sridharan@linux.intel.com>
Signed-off-by: Peter Ujfalusi <peter.ujfalusi@linux.intel.com>
Reviewed-by: Takashi Iwai <tiwai@suse.de>
Link: https://lore.kernel.org/r/20230404104127.5629-19-peter.ujfalusi@linux.intel.com
Signed-off-by: Mark Brown <broonie@kernel.org>
| -rw-r--r-- | include/sound/hda-mlink.h | 5 | ||||
| -rw-r--r-- | sound/soc/sof/intel/hda-mlink.c | 12 |
2 files changed, 17 insertions, 0 deletions
diff --git a/include/sound/hda-mlink.h b/include/sound/hda-mlink.h index fee42c432fa3..dbc47af08135 100644 --- a/include/sound/hda-mlink.h +++ b/include/sound/hda-mlink.h @@ -52,6 +52,8 @@ int hda_bus_ml_suspend(struct hdac_bus *bus); struct hdac_ext_link *hdac_bus_eml_ssp_get_hlink(struct hdac_bus *bus); struct hdac_ext_link *hdac_bus_eml_dmic_get_hlink(struct hdac_bus *bus); +struct mutex *hdac_bus_eml_get_mutex(struct hdac_bus *bus, bool alt, int elid); + int hdac_bus_eml_enable_offload(struct hdac_bus *bus, bool alt, int elid, bool enable); #else @@ -153,6 +155,9 @@ hdac_bus_eml_ssp_get_hlink(struct hdac_bus *bus) { return NULL; } static inline struct hdac_ext_link * hdac_bus_eml_dmic_get_hlink(struct hdac_bus *bus) { return NULL; } +static inline struct mutex * +hdac_bus_eml_get_mutex(struct hdac_bus *bus, bool alt, int elid) { return NULL; } + static inline int hdac_bus_eml_enable_offload(struct hdac_bus *bus, bool alt, int elid, bool enable) { diff --git a/sound/soc/sof/intel/hda-mlink.c b/sound/soc/sof/intel/hda-mlink.c index b9ce07c38bb5..775582ab7494 100644 --- a/sound/soc/sof/intel/hda-mlink.c +++ b/sound/soc/sof/intel/hda-mlink.c @@ -800,6 +800,18 @@ int hda_bus_ml_suspend(struct hdac_bus *bus) } EXPORT_SYMBOL_NS(hda_bus_ml_suspend, SND_SOC_SOF_HDA_MLINK); +struct mutex *hdac_bus_eml_get_mutex(struct hdac_bus *bus, bool alt, int elid) +{ + struct hdac_ext2_link *h2link; + + h2link = find_ext2_link(bus, alt, elid); + if (!h2link) + return NULL; + + return &h2link->eml_lock; +} +EXPORT_SYMBOL_NS(hdac_bus_eml_get_mutex, SND_SOC_SOF_HDA_MLINK); + struct hdac_ext_link *hdac_bus_eml_ssp_get_hlink(struct hdac_bus *bus) { struct hdac_ext2_link *h2link; |