linux-kernel - Re: [PATCH v5 3/6] i2c: designware: Add dedicated algorithm for AMD NAVI

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Message-ID: <aW9NYkADDRju1cgJ@smile.fi.intel.com>
Date: Tue, 20 Jan 2026 11:39:46 +0200
From: Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
To: Benoît Monin <benoit.monin@...tlin.com>
Cc: Andi Shyti <andi.shyti@...nel.org>,
	Mika Westerberg <mika.westerberg@...ux.intel.com>,
	Jan Dabros <jsd@...ihalf.com>,
	Sebastian Andrzej Siewior <bigeasy@...utronix.de>,
	Clark Williams <clrkwllms@...nel.org>,
	Steven Rostedt <rostedt@...dmis.org>,
	Thomas Petazzoni <thomas.petazzoni@...tlin.com>,
	Gregory CLEMENT <gregory.clement@...tlin.com>,
	Théo Lebrun <theo.lebrun@...tlin.com>,
	Tawfik Bayouk <tawfik.bayouk@...ileye.com>,
	Vladimir Kondratiev <vladimir.kondratiev@...ileye.com>,
	Dmitry Guzman <dmitry.guzman@...ileye.com>,
	linux-i2c@...r.kernel.org, linux-kernel@...r.kernel.org,
	linux-rt-devel@...ts.linux.dev
Subject: Re: [PATCH v5 3/6] i2c: designware: Add dedicated algorithm for AMD
 NAVI

On Tue, Jan 20, 2026 at 10:28:03AM +0100, Benoît Monin wrote:
> Apart from runtime PM, there is nothing in common between i2c_dw_xfer()
> and amd_i2c_dw_xfer_quirk(), so give AMD NAVI controller its own algorithm
> instead of calling the quirk from i2c_dw_xfer().
> 
> Add runtime PM handling to amd_i2c_dw_xfer_quirk() and a dedicated
> i2c_algorithm for AMD NAVI controllers. The adapter algorithm is set
> during probe based on the device model.
> 
> This way we avoid checking for the device model at the start of every
> transfer.

...

> +	ACQUIRE(pm_runtime_active_auto_try, pm)(dev->dev);
> +	if (ACQUIRE_ERR(pm_runtime_active_auto_try, &pm))
> +		return -ENXIO;

There are PM_ACQUIRE_*() macros available now.

-- 
With Best Regards,
Andy Shevchenko