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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>
This commit is contained in:
Pierre-Louis Bossart 2023-04-04 13:41:22 +03:00 committed by Mark Brown
parent 02ba1b021c
commit 1f5a6e8b51
No known key found for this signature in database
GPG Key ID: 24D68B725D5487D0
2 changed files with 88 additions and 0 deletions
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18
include/sound/hda-mlink.h
View File

@ -23,6 +23,12 @@ int hdac_bus_eml_sdw_set_syncprd_unlocked(struct hdac_bus *bus, u32 syncprd);
int hdac_bus_eml_wait_syncpu_unlocked(struct hdac_bus *bus, bool alt, int elid);
int hdac_bus_eml_sdw_wait_syncpu_unlocked(struct hdac_bus *bus);
void hdac_bus_eml_sync_arm_unlocked(struct hdac_bus *bus, bool alt, int elid, int sublink);
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);
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);
@ -74,6 +80,18 @@ hdac_bus_eml_wait_syncpu_unlocked(struct hdac_bus *bus, bool alt, int elid)
static inline int
hdac_bus_eml_sdw_wait_syncpu_unlocked(struct hdac_bus *bus) { return 0; }
static inline void
hdac_bus_eml_sync_arm_unlocked(struct hdac_bus *bus, bool alt, int elid, int sublink) { }
static inline void
hdac_bus_eml_sdw_sync_arm_unlocked(struct hdac_bus *bus, int sublink) { }
static inline int
hdac_bus_eml_sync_go_unlocked(struct hdac_bus *bus, bool alt, int elid) { return 0; }
static inline int
hdac_bus_eml_sdw_sync_go_unlocked(struct hdac_bus *bus) { return 0; }
static inline int
hdac_bus_eml_power_up(struct hdac_bus *bus, bool alt, int elid, int sublink)
{

70
sound/soc/sof/intel/hda-mlink.c
View File

@ -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)
{