linux-kernel - [PATCH 0/2] i2c: designware: Implement atomic transfer suppot

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Message-ID: <20250820153125.22002-1-jszhang@kernel.org>
Date: Wed, 20 Aug 2025 23:31:23 +0800
From: Jisheng Zhang <jszhang@...nel.org>
To: Jarkko Nikula <jarkko.nikula@...ux.intel.com>,
	Andy Shevchenko <andriy.shevchenko@...ux.intel.com>,
	Mika Westerberg <mika.westerberg@...ux.intel.com>,
	Jan Dabros <jsd@...ihalf.com>,
	Andi Shyti <andi.shyti@...nel.org>
Cc: linux-kernel@...r.kernel.org,
	linux-i2c@...r.kernel.org
Subject: [PATCH 0/2] i2c: designware: Implement atomic transfer suppot

Implement atomic transfer support for designware i2c. This increases
complexity but is necessary for atomic I2C transfers required by some
hardware configurations, e.g., to trigger reboots on an external PMIC chip.

patch1 is bug fix
patch2 is the atomic transfer implementation patch.

Jisheng Zhang (2):
  i2c: designware: Avoid taking clk_prepare mutex in PM callbacks
  i2c: designware: Implement atomic transfer suppot

 drivers/i2c/busses/i2c-designware-common.c | 47 +++++++++----
 drivers/i2c/busses/i2c-designware-core.h   |  5 +-
 drivers/i2c/busses/i2c-designware-master.c | 80 +++++++++++++++++++---
 3 files changed, 106 insertions(+), 26 deletions(-)

-- 
2.50.1