linux-kernel - Re: [PATCH 0/9] iio mount matrix - revitalize missing bindings documentation and provide code for bmc150, bmg160, bma180, itg3200, hmc584x

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Date:   Wed, 20 Feb 2019 17:26:33 +0100
From:   "H. Nikolaus Schaller" <hns@...delico.com>
To:     Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
Cc:     Linus Walleij <linus.walleij@...aro.org>,
        Jonathan Cameron <jic23@...nel.org>,
        Rob Herring <robh+dt@...nel.org>,
        Mark Rutland <mark.rutland@....com>,
        Charles Keepax <ckeepax@...nsource.cirrus.com>,
        Song Qiang <songqiang1304521@...il.com>,
        letux-kernel@...nphoenux.org, Hartmut Knaack <knaack.h@....de>,
        Lars-Peter Clausen <lars@...afoo.de>,
        Peter Meerwald-Stadler <pmeerw@...erw.net>,
        linux-iio@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH 0/9] iio mount matrix - revitalize missing bindings documentation and provide code for bmc150, bmg160, bma180, itg3200, hmc584x

Hi Andy,

> Am 20.02.2019 um 17:13 schrieb Andy Shevchenko <andriy.shevchenko@...ux.intel.com>:
> 
> On Wed, Feb 20, 2019 at 03:00:47PM +0100, H. Nikolaus Schaller wrote:
>> This patch series adds the mount-matrix to several iio sensor drivers
>> used in handheld devices.
>> 
>> The mount-matrix translates the quite arbitrary orientation of the sensor
>> on some printed circuit board to user-tangible orientation in handheld
>> devices that relates to typical screen orientation.
>> 
>> There was a bindings documentation by Linus Walleij but the patch
>> did not make it into mainline. Therefore I resend it here.
>> 
>> Next I have added some clarifications (at least I hope it clarifies)
>> in a second patch.
>> 
>> Finally, the patch set implements the hooks for the mount matrix
>> in several iio drivers: bmc150, bma180, bmg160, itg3200, hmc5843.
>> This includes also one patch for the bma180 to convert it to devm API.
>> 
>> We use them in different variants of the omap3-gta04 so a separate
>> patch set will provide device tree additions for them.
> 
> Thanks for the patch, overall good stuff there.
> Couple of things, though:
> - address my comments (consider them against entire series)
> - check my patch I sent today to support this from ACPI
> 
> I wouldn't like to spread more drivers use specific of_foo_bar stuff where it's
> easily to support everything (note: device_property_* calls supports software
> fw nodes as well).
> 
> Perhaps, you may incorporate my patch into your nice series.

Ok, that looks like a good proposal which avoids compile issues right
from beginning of v2.

BR and thanks,
Nikolaus

> 
>> 
>> 
>> H. Nikolaus Schaller (8):
>>  iio: bindings: clarifications for mount-matrix bindings
>>  iio: accel: bmc150: add mount matrix support
>>  iio: accel: bma180: add mount matrix support
>>  iio: accel: bma180: convert to devm
>>  iio: gyro: bmg160: add mount matrix support
>>  iio: gyro: itg3200: add mount matrix support
>>  iio: magnetometer: bmc150: add mount matrix support
>>  iio: magnetometer: hmc5843: add mount matrix support
>> 
>> Linus Walleij (1):
>>  iio: document bindings for mounting matrices
>> 
>> .../devicetree/bindings/iio/mount-matrix.txt  | 162 ++++++++++++++++++
>> drivers/iio/accel/bma180.c                    |  70 ++++----
>> drivers/iio/accel/bmc150-accel-core.c         |  19 ++
>> drivers/iio/gyro/bmg160_core.c                |  19 ++
>> drivers/iio/gyro/itg3200_core.c               |  18 ++
>> drivers/iio/magnetometer/bmc150_magn.c        |  19 ++
>> drivers/iio/magnetometer/hmc5843.h            |   1 +
>> drivers/iio/magnetometer/hmc5843_core.c       |  14 ++
>> include/linux/iio/gyro/itg3200.h              |   1 +
>> 9 files changed, 288 insertions(+), 35 deletions(-)
>> create mode 100644 Documentation/devicetree/bindings/iio/mount-matrix.txt
>> 
>> -- 
>> 2.19.1
>> 
> 
> -- 
> With Best Regards,
> Andy Shevchenko
> 
>