linux-kernel - Re: [PATCH v4 07/11] counter: stm32-timer-cnt: add checks on quadrature encoder capability

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Date: Wed, 6 Mar 2024 14:39:52 -0500
From: William Breathitt Gray <william.gray@...aro.org>
To: Fabrice Gasnier <fabrice.gasnier@...s.st.com>
Cc: lee@...nel.org, alexandre.torgue@...s.st.com, linux-iio@...r.kernel.org,
	linux-stm32@...md-mailman.stormreply.com,
	linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v4 07/11] counter: stm32-timer-cnt: add checks on
 quadrature encoder capability

On Tue, Feb 27, 2024 at 06:37:59PM +0100, Fabrice Gasnier wrote:
> This is a precursor patch to support capture channels on all possible
> channels and stm32 timer types. Original driver was intended to be used
> only as quadrature encoder and simple counter on internal clock.
> 
> So, add a check on encoder capability, so the driver may be probed for
> timer instances without encoder feature. This way, all timers may be used
> as simple counter on internal clock, starting from here.
> 
> Encoder capability is retrieved by using the timer index (originally in
> stm32-timer-trigger driver and dt-bindings). The need to keep backward
> compatibility with existing device tree lead to parse aside trigger node.
> 
> Signed-off-by: Fabrice Gasnier <fabrice.gasnier@...s.st.com>

Reviewed-by: William Breathitt Gray <william.gray@...aro.org>

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