linux-kernel - [PATCH 0/6] Improve cs42l43 suspend/IRQ interactions

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Message-ID: <20250903094549.271068-1-ckeepax@opensource.cirrus.com>
Date: Wed,  3 Sep 2025 10:45:43 +0100
From: Charles Keepax <ckeepax@...nsource.cirrus.com>
To: broonie@...nel.org, lee@...nel.org
Cc: lgirdwood@...il.com, linux-sound@...r.kernel.org,
        linux-kernel@...r.kernel.org, patches@...nsource.cirrus.com
Subject: [PATCH 0/6] Improve cs42l43 suspend/IRQ interactions

cs42l43 uses pm_runtime_force_suspend() during system suspend, however
this means care must be taken that IRQ handler code isn't running when
entering system suspend as force suspend will ignore that the handler
is holding a pm reference. Typically the result of this is just a few
error messages, but better to improve the handling and ensure that all
IRQ processing is synchronised in before system suspend.

Note the ASoC and MFD bits of this series have no build dependencies,
so could go through their seperate trees, however, it would be nice if
all the patches could land in the same kernel version to avoid the IRQ
handling being in a transitional state.

Thanks,
Charles

Charles Keepax (6):
  ASoC: cs42l43: Rename system suspend callback and fix debug print
  ASoC: cs42l43: Store IRQ domain in codec private data
  ASoC: cs42l43: Disable IRQs in system suspend
  ASoC: cs42l43: Shutdown jack detection on suspend
  mfd: cs42l43: Move IRQ enable/disable to encompass force suspend
  mfd: cs42l43: Remove IRQ masking in suspend

 drivers/mfd/cs42l43.c           |  32 +---------
 sound/soc/codecs/cs42l43-jack.c |   8 ++-
 sound/soc/codecs/cs42l43.c      | 109 +++++++++++++++++++++++---------
 sound/soc/codecs/cs42l43.h      |   3 +
 4 files changed, 89 insertions(+), 63 deletions(-)

-- 
2.47.2