At the time the cs35l56 driver was written the only way to get interrupts
from the SoundWire core was to implement a custom handler inside the
interrupt_callback() function.

The SoundWire core now provides a virtual IRQ for notifying ImpDef
interrupts, and switching to this simplifies the code and also makes it
more similar to the normal interrupt handling of I2C/SPI (though some
SoundWire specials are still needed).

Patches #1 and #2 do some preparatory code shuffling so that there is
less clutter in patch #4.

Patch #3 changes the SoundWire core code to create the virtual ImpDef IRQ
before calling the codec drive probe() so that the IRQ can be requested in
probe().

Richard Fitzgerald (4):
  ASoC: cs35l56: Request IRQ in cs35l56_common_probe()
  ASoC: cs35l56: Move cs35l56_irq_request() after cs35l56_irq()
  soundwire: bus_type: Create IRQ mapping before calling driver probe()
  ASoC: cs35l56: Use IRQ provided by the SoundWire core

 drivers/soundwire/bus_type.c      |  6 +--
 include/sound/cs35l56.h           |  1 -
 sound/soc/codecs/Kconfig          |  1 +
 sound/soc/codecs/cs35l56-i2c.c    | 10 +----
 sound/soc/codecs/cs35l56-sdw.c    | 69 ++++++-------------------------
 sound/soc/codecs/cs35l56-shared.c | 41 +++++++++---------
 sound/soc/codecs/cs35l56-spi.c    | 10 +----
 sound/soc/codecs/cs35l56.c        | 57 +++++++++++++------------
 sound/soc/codecs/cs35l56.h        | 11 ++---
 9 files changed, 73 insertions(+), 133 deletions(-)

-- 
2.47.3

On 10/08/2026 11:40 am, Richard Fitzgerald wrote:
> At the time the cs35l56 driver was written the only way to get interrupts
> from the SoundWire core was to implement a custom handler inside the
> interrupt_callback() function.

Mark, don't take this series. I need to send a bugfix for something else
and I want to do that first.