diff options
author | Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com> | 2023-04-04 13:41:22 +0300 |
---|---|---|
committer | Mark Brown <broonie@kernel.org> | 2023-04-06 18:45:45 +0300 |
commit | 1f5a6e8b5147b7bc49c0e091f8b458e45d8ee56c (patch) | |
tree | 10127ccf48b1c78dca1e212887a5f06da6cac147 /sound | |
parent | 02ba1b021c28670011b361be3be4bda49f348c43 (diff) | |
download | linux-1f5a6e8b5147b7bc49c0e091f8b458e45d8ee56c.tar.xz |
ASoC: SOF: Intel: hda-mlink: add helpers for sync_arm/sync_go
The multi-link synchronization uses the same concept and registers,
but moved to the HDAudio extended links.
Add helpers for sync_arm and sync_go which are the basic for the bus
reset, bank switch and clock stop.
Since SoundWire is the only user of those helpers, only expose the
_unlocked versions for now.
Note that SYNCGO is a write-only bit, so no error can be reported. We
still return 0 for compatibility with the SoundWire stream management
headers.
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/20230404104127.5629-14-peter.ujfalusi@linux.intel.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Diffstat (limited to 'sound')
-rw-r--r-- | sound/soc/sof/intel/hda-mlink.c | 70 |
1 files changed, 70 insertions, 0 deletions
diff --git a/sound/soc/sof/intel/hda-mlink.c b/sound/soc/sof/intel/hda-mlink.c index a364d6b5935d..c8371ab03c0a 100644 --- a/sound/soc/sof/intel/hda-mlink.c +++ b/sound/soc/sof/intel/hda-mlink.c @@ -294,6 +294,26 @@ static int hdaml_link_wait_syncpu(u32 __iomem *lsync) return hdaml_wait_bit(lsync, 0, AZX_REG_ML_LSYNC_SYNCPU, 0); } +static void hdaml_link_sync_arm(u32 __iomem *lsync, int sublink) +{ + u32 val; + + val = readl(lsync); + val |= (AZX_REG_ML_LSYNC_CMDSYNC << sublink); + + writel(val, lsync); +} + +static void hdaml_link_sync_go(u32 __iomem *lsync) +{ + u32 val; + + val = readl(lsync); + val |= AZX_REG_ML_LSYNC_SYNCGO; + + writel(val, lsync); +} + /* END HDAML section */ static int hda_ml_alloc_h2link(struct hdac_bus *bus, int index) @@ -492,6 +512,56 @@ int hdac_bus_eml_sdw_wait_syncpu_unlocked(struct hdac_bus *bus) } EXPORT_SYMBOL_NS(hdac_bus_eml_sdw_wait_syncpu_unlocked, SND_SOC_SOF_HDA_MLINK); +void hdac_bus_eml_sync_arm_unlocked(struct hdac_bus *bus, bool alt, int elid, int sublink) +{ + struct hdac_ext2_link *h2link; + struct hdac_ext_link *hlink; + + h2link = find_ext2_link(bus, alt, elid); + if (!h2link) + return; + + if (!h2link->lss) + return; + + hlink = &h2link->hext_link; + + hdaml_link_sync_arm(hlink->ml_addr + AZX_REG_ML_LSYNC, sublink); +} +EXPORT_SYMBOL_NS(hdac_bus_eml_sync_arm_unlocked, SND_SOC_SOF_HDA_MLINK); + +void hdac_bus_eml_sdw_sync_arm_unlocked(struct hdac_bus *bus, int sublink) +{ + hdac_bus_eml_sync_arm_unlocked(bus, true, AZX_REG_ML_LEPTR_ID_SDW, sublink); +} +EXPORT_SYMBOL_NS(hdac_bus_eml_sdw_sync_arm_unlocked, SND_SOC_SOF_HDA_MLINK); + +int hdac_bus_eml_sync_go_unlocked(struct hdac_bus *bus, bool alt, int elid) +{ + struct hdac_ext2_link *h2link; + struct hdac_ext_link *hlink; + + h2link = find_ext2_link(bus, alt, elid); + if (!h2link) + return 0; + + if (!h2link->lss) + return 0; + + hlink = &h2link->hext_link; + + hdaml_link_sync_go(hlink->ml_addr + AZX_REG_ML_LSYNC); + + return 0; +} +EXPORT_SYMBOL_NS(hdac_bus_eml_sync_go_unlocked, SND_SOC_SOF_HDA_MLINK); + +int hdac_bus_eml_sdw_sync_go_unlocked(struct hdac_bus *bus) +{ + return hdac_bus_eml_sync_go_unlocked(bus, true, AZX_REG_ML_LEPTR_ID_SDW); +} +EXPORT_SYMBOL_NS(hdac_bus_eml_sdw_sync_go_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) { |