linux-toradex.git/drivers/soundwire/intel_ace2x.c, branch v6.5-rc4

soundwire: intel_ace2x: add pre/post bank switch callbacks

2023-05-27T10:36:47+00:00

The .pre_ and .post_switch callbacks are mandatory.

Signed-off-by: Pierre-Louis Bossart 
Reviewed-by: Rander Wang 
Reviewed-by: Ranjani Sridharan 
Signed-off-by: Bard Liao 
Link: https://lore.kernel.org/r/20230515071042.2038-22-yung-chuan.liao@linux.intel.com
Signed-off-by: Vinod Koul

soundwire: intel_ace2x: add new_peripheral_assigned callback

2023-05-27T10:36:46+00:00

Add the abstraction needed to only program the LSDIID registers for
the HDaudio extended links. It's perfectly fine to program this
register multiple times in case devices lose sync and reattach.

Signed-off-by: Pierre-Louis Bossart 
Reviewed-by: Rander Wang 
Reviewed-by: Péter Ujfalusi 
Reviewed-by: Ranjani Sridharan 
Signed-off-by: Bard Liao 
Link: https://lore.kernel.org/r/20230515071042.2038-21-yung-chuan.liao@linux.intel.com
Signed-off-by: Vinod Koul

soundwire: intel_ace2x: add check_cmdsync_unlocked helper

2023-05-27T10:36:46+00:00

This is the last callback needed for all bus management routines on
new hardware. Same concept as before, just different register.

Signed-off-by: Pierre-Louis Bossart 
Reviewed-by: Rander Wang 
Reviewed-by: Péter Ujfalusi 
Reviewed-by: Ranjani Sridharan 
Signed-off-by: Bard Liao 
Link: https://lore.kernel.org/r/20230515071042.2038-19-yung-chuan.liao@linux.intel.com
Signed-off-by: Vinod Koul

soundwire: intel_ace2x: enable wake support

2023-05-27T10:36:46+00:00

The WAKEEN and WAKESTS registers were moved to the per-link SHIM_VS
area.

Signed-off-by: Pierre-Louis Bossart 
Reviewed-by: Rander Wang 
Reviewed-by: Péter Ujfalusi 
Reviewed-by: Ranjani Sridharan 
Signed-off-by: Bard Liao 
Link: https://lore.kernel.org/r/20230515071042.2038-18-yung-chuan.liao@linux.intel.com
Signed-off-by: Vinod Koul

soundwire: intel_ace2x: use common helpers for bus start/stop

2023-05-27T10:36:46+00:00

The sequences are so far identical, so the abstraction is a bit
over-engineered. In time we will simplify if there is no need to
special case or work-around programming sequences.

Signed-off-by: Pierre-Louis Bossart 
Reviewed-by: Rander Wang 
Reviewed-by: Péter Ujfalusi 
Reviewed-by: Ranjani Sridharan 
Signed-off-by: Bard Liao 
Link: https://lore.kernel.org/r/20230515071042.2038-17-yung-chuan.liao@linux.intel.com
Signed-off-by: Vinod Koul

soundwire: intel_ace2x: add sync_arm/sync_go helpers

2023-05-27T10:36:46+00:00

Same functionality as before, but with the registers moved to the
HDaudio multi-link area.

Signed-off-by: Pierre-Louis Bossart 
Reviewed-by: Rander Wang 
Reviewed-by: Péter Ujfalusi 
Reviewed-by: Ranjani Sridharan 
Signed-off-by: Bard Liao 
Link: https://lore.kernel.org/r/20230515071042.2038-16-yung-chuan.liao@linux.intel.com
Signed-off-by: Vinod Koul

soundwire: intel_ace2x: add DAI registration

2023-05-27T10:36:46+00:00

The code is similar to the previous implementation, the only
difference is that the PDI descriptors are now in different areas.

Using common helpers proves tricky with multiple changed registers,
workarounds that are no longer necessary. It's simpler to duplicate
the intel_register_dai() function rather than try to add multiple
levels of abstraction and indirections.

Signed-off-by: Pierre-Louis Bossart 
Reviewed-by: Rander Wang 
Reviewed-by: Péter Ujfalusi 
Reviewed-by: Ranjani Sridharan 
Signed-off-by: Bard Liao 
Link: https://lore.kernel.org/r/20230515071042.2038-15-yung-chuan.liao@linux.intel.com
Signed-off-by: Vinod Koul

soundwire: intel_ace2x: configure link PHY

2023-05-27T10:36:46+00:00

Unlike previous hardware generations, the glue-to-master transition is
not managed by software, instead the transitions are managed as part
of the power-up/down sequences controlled by SPA/CPA bits.

The only thing that's required is to configure the link PHY for
'normal' operation instead of the PHY test mode.

Signed-off-by: Pierre-Louis Bossart 
Reviewed-by: Rander Wang 
Reviewed-by: Péter Ujfalusi 
Reviewed-by: Ranjani Sridharan 
Signed-off-by: Bard Liao 
Link: https://lore.kernel.org/r/20230515071042.2038-14-yung-chuan.liao@linux.intel.com
Signed-off-by: Vinod Koul

soundwire: intel_ace2x: set SYNCPRD before powering-up

2023-05-27T10:36:45+00:00

The registers used for multi-link synchronization are no longer in the
SHIM but in the HDaudio multi-link capability space. Use helpers to
configure the SYNCPRD value, and wait for SYNCPU to change after
powering-up.

Note that the SYNCPRD value is shared between all sublinks, for
obvious reasons if those links are supposed to be synchronized. The
value of SYNCPRD is programmed only once for all sublinks.

Signed-off-by: Pierre-Louis Bossart 
Reviewed-by: Rander Wang 
Reviewed-by: Péter Ujfalusi 
Reviewed-by: Ranjani Sridharan 
Signed-off-by: Bard Liao 
Link: https://lore.kernel.org/r/20230515071042.2038-13-yung-chuan.liao@linux.intel.com
Signed-off-by: Vinod Koul

soundwire: intel_ace2x: add link power-up/down helpers

2023-05-27T10:36:45+00:00

only power-up/down for now, the frequency is not set.

Signed-off-by: Pierre-Louis Bossart 
Reviewed-by: Rander Wang 
Reviewed-by: Péter Ujfalusi 
Reviewed-by: Ranjani Sridharan 
Signed-off-by: Bard Liao 
Link: https://lore.kernel.org/r/20230515071042.2038-12-yung-chuan.liao@linux.intel.com
Signed-off-by: Vinod Koul