linux-kernel - [PATCH 0/2] hwmon: ina2xx: convert driver to using regmap

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Message-Id: <1445876673-32180-1-git-send-email-mtitinger@baylibre.com>
Date:	Mon, 26 Oct 2015 17:24:31 +0100
From:	Marc Titinger <mtitinger@...libre.com>
To:	linux@...ck-us.net, jdelvare@...e.com
Cc:	lm-sensors@...sensors.org, linux-kernel@...r.kernel.org,
	Marc Titinger <mtitinger@...libre.com>
Subject: [PATCH 0/2] hwmon: ina2xx: convert driver to using regmap

Hi Guenter,

as requested, here's the regmap version as a separate patch. I've left out
the idea of separate show functions as it doesn't bring much indeed.

If you're interested in a before/after comparison, here are the plots of
of a usb key (DUT) power-cycle captured using either driver version.
As expected, the measurement is better resolved with single reads.

"github dot com"/mtitinger/ACME/blob/master/docs/measurements/bulk-700pts.png
"github dot com"/mtitinger/ACME/blob/master/docs/measurements/regmap-700pts.png

Many thanks.

Marc Titinger (2):
  hwmon: ina2xx: convert driver to using regmap
  hwmon: ina2xx: give precedence to DT over checking for platform data.

 drivers/hwmon/ina2xx.c | 208 +++++++++++++++++++------------------------------
 1 file changed, 79 insertions(+), 129 deletions(-)

-- 
1.9.1

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