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ASoC: SOF: Intel: hda-mlink: add helper to check cmdsync

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This helper is an optimization where sync_go is only called when the
cmdsync field is actually set to a non-zero value.

Since this is also only used by SoundWire for now, only expose the
_unlocked version.

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/20230404104127.5629-15-peter.ujfalusi@linux.intel.com
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Pierre-Louis Bossart 2023-04-04 13:41:23 +03:00 committed by Mark Brown
parent 1f5a6e8b51
commit d56d205857
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GPG key ID: 24D68B725D5487D0
2 changed files with 47 additions and 0 deletions
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9
include/sound/hda-mlink.h
View file

@ -29,6 +29,9 @@ void hdac_bus_eml_sdw_sync_arm_unlocked(struct hdac_bus *bus, int sublink);
int hdac_bus_eml_sync_go_unlocked(struct hdac_bus *bus, bool alt, int elid);
int hdac_bus_eml_sdw_sync_go_unlocked(struct hdac_bus *bus);
bool hdac_bus_eml_check_cmdsync_unlocked(struct hdac_bus *bus, bool alt, int elid);
bool hdac_bus_eml_sdw_check_cmdsync_unlocked(struct hdac_bus *bus);
int hdac_bus_eml_power_up(struct hdac_bus *bus, bool alt, int elid, int sublink);
int hdac_bus_eml_power_up_unlocked(struct hdac_bus *bus, bool alt, int elid, int sublink);
@ -92,6 +95,12 @@ hdac_bus_eml_sync_go_unlocked(struct hdac_bus *bus, bool alt, int elid) { return
static inline int
hdac_bus_eml_sdw_sync_go_unlocked(struct hdac_bus *bus) { return 0; }
static inline bool
hdac_bus_eml_check_cmdsync_unlocked(struct hdac_bus *bus, bool alt, int elid) { return false; }
static inline bool
hdac_bus_eml_sdw_check_cmdsync_unlocked(struct hdac_bus *bus) { return false; }
static inline int
hdac_bus_eml_power_up(struct hdac_bus *bus, bool alt, int elid, int sublink)
{

38
sound/soc/sof/intel/hda-mlink.c
View file

@ -314,6 +314,15 @@ static void hdaml_link_sync_go(u32 __iomem *lsync)
writel(val, lsync);
}
static bool hdaml_link_check_cmdsync(u32 __iomem *lsync, u32 cmdsync_mask)
{
u32 val;
val = readl(lsync);
return !!(val & cmdsync_mask);
}
/* END HDAML section */
static int hda_ml_alloc_h2link(struct hdac_bus *bus, int index)
@ -562,6 +571,35 @@ int hdac_bus_eml_sdw_sync_go_unlocked(struct hdac_bus *bus)
}
EXPORT_SYMBOL_NS(hdac_bus_eml_sdw_sync_go_unlocked, SND_SOC_SOF_HDA_MLINK);
bool hdac_bus_eml_check_cmdsync_unlocked(struct hdac_bus *bus, bool alt, int elid)
{
struct hdac_ext2_link *h2link;
struct hdac_ext_link *hlink;
u32 cmdsync_mask;
h2link = find_ext2_link(bus, alt, elid);
if (!h2link)
return 0;
if (!h2link->lss)
return 0;
hlink = &h2link->hext_link;
cmdsync_mask = GENMASK(AZX_REG_ML_LSYNC_CMDSYNC_SHIFT + h2link->slcount - 1,
AZX_REG_ML_LSYNC_CMDSYNC_SHIFT);
return hdaml_link_check_cmdsync(hlink->ml_addr + AZX_REG_ML_LSYNC,
cmdsync_mask);
}
EXPORT_SYMBOL_NS(hdac_bus_eml_check_cmdsync_unlocked, SND_SOC_SOF_HDA_MLINK);
bool hdac_bus_eml_sdw_check_cmdsync_unlocked(struct hdac_bus *bus)
{
return hdac_bus_eml_check_cmdsync_unlocked(bus, true, AZX_REG_ML_LEPTR_ID_SDW);
}
EXPORT_SYMBOL_NS(hdac_bus_eml_sdw_check_cmdsync_unlocked, SND_SOC_SOF_HDA_MLINK);
static int hdac_bus_eml_power_up_base(struct hdac_bus *bus, bool alt, int elid, int sublink,
bool eml_lock)
{