linux-kernel - Re: [PATCH v6] drm/i915/hwmon: expose fan speed

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Message-ID: <ZsX_YQLPogCSPfSQ@ashyti-mobl2.lan>
Date: Wed, 21 Aug 2024 16:53:21 +0200
From: Andi Shyti <andi.shyti@...ux.intel.com>
To: Raag Jadav <raag.jadav@...el.com>
Cc: jani.nikula@...ux.intel.com, joonas.lahtinen@...ux.intel.com,
	rodrigo.vivi@...el.com, tursulin@...ulin.net, airlied@...il.com,
	daniel@...ll.ch, linux@...ck-us.net, andi.shyti@...ux.intel.com,
	andriy.shevchenko@...ux.intel.com, intel-gfx@...ts.freedesktop.org,
	dri-devel@...ts.freedesktop.org, linux-hwmon@...r.kernel.org,
	linux-kernel@...r.kernel.org, anshuman.gupta@...el.com,
	badal.nilawar@...el.com, riana.tauro@...el.com,
	ashutosh.dixit@...el.com, karthik.poosa@...el.com
Subject: Re: [PATCH v6] drm/i915/hwmon: expose fan speed

Hi Raag,

> +	/*
> +	 * Calculate fan speed in RPM by time averaging two subsequent
> +	 * readings in minutes.
> +	 * RPM = number of rotations * msecs per minute / time in msecs
> +	 */
> +	*val = DIV_ROUND_UP(rotations * (MSEC_PER_SEC * 60), time);

once you find the correct operator here, please feel free to add:

Reviewed-by: Andi Shyti <andi.shyti@...ux.intel.com>

Normally these get me confused, I'm happy Andy is looking after
it :-)

Thanks,
Andi