linux-kernel - Re: [PATCH 3/3] hwmon: add Gateworks System Controller support

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Message-ID: <20200520093100.GH271301@dell>
Date:   Wed, 20 May 2020 10:31:00 +0100
From:   Lee Jones <lee.jones@...aro.org>
To:     Tim Harvey <tharvey@...eworks.com>
Cc:     Jean Delvare <jdelvare@...e.com>,
        Guenter Roeck <linux@...ck-us.net>,
        linux-hwmon@...r.kernel.org, Rob Herring <robh+dt@...nel.org>,
        Frank Rowand <frowand.list@...il.com>,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
        Robert Jones <rjones@...eworks.com>
Subject: Re: [PATCH 3/3] hwmon: add Gateworks System Controller support

On Fri, 15 May 2020, Tim Harvey wrote:

> The Gateworks System Controller has a hwmon sub-component that exposes
> up to 16 ADC's, some of which are temperature sensors, others which are
> voltage inputs. The ADC configuration (register mapping and name) is
> configured via device-tree and varies board to board.
> 
> Signed-off-by: Tim Harvey <tharvey@...eworks.com>
> Reviewed-by: Guenter Roeck <linux@...ck-us.net>
> ---
> v11:
> - no change
> 
> v10:
> - no change
> 
> v9:
> - use exported gsc_{read,write}
> - added Reviewed-by: Guenter Roeck <linux@...ck-us.net>
> 
> v8:
> - move regmap init to hwmon
> 
> v7:
> - fix whitespace in Kconfig
> - remove unnecessary device pointer in private data
> - change divider from mili-ohms to ohms
> - move fan base property to reg
> 
> v6:
> - fix size of info field
> - improve pwm output control documentation
> - include unit suffix in divider and offset
> - change subnode name to gsc-adc
> - change to fan subnode
> - fix voltage offset
> 
> v5:
> - fix various checkpatch issues
> - correct gsc-hwmon.rst in MAINTAINERS
> - encorporate Gunter's feedback:
>  - switch to SENSOR_DEVICE_ATTR_{RW,RO}
>  - use tmp value to avoid excessive pointer deference
>  - simplify shift operation
>  - scale voffset once
>  - simplify is_visible function
>  - remove empty line at end of file
> 
> v4:
> - adjust for uV offset from device-tree
> - remove unnecessary optional write function
> - remove register range check
> - change dev_err prints to use gsc dev
> - hard-code resolution/scaling for raw adcs
> - describe units of ADC resolution
> - move to using pwm<n>_auto_point<m>_{pwm,temp} for FAN PWM
> - ensure space before/after operators
> - remove unnecessary parens
> - remove more debugging
> - add default case and comment for type_voltage
> - remove unnecessary index bounds checks for channel
> - remove unnecessary clearing of struct fields
> - added Documentation/hwmon/gsc-hwmon.rst
> 
> v3:
> - add voltage_raw input type and supporting fields
> - add channel validation to is_visible function
> - remove unnecessary channel validation from read/write functions
> 
> v2:
> - change license comment style
> - remove DEBUG
> - simplify regmap_bulk_read err check
> - remove break after returns in switch statement
> - fix fan setpoint buffer address
> - remove unnecessary parens
> - consistently use struct device *dev pointer
> - change license/comment block
> - add validation for hwmon child node props
> - move parsing of of to own function
> - use strlcpy to ensure null termination
> - fix static array sizes and removed unnecessary initializers
> - dynamically allocate channels
> - fix fan input label
> - support platform data
> - fixed whitespace issues
> ---
>  Documentation/hwmon/gsc-hwmon.rst       |  53 +++++
>  Documentation/hwmon/index.rst           |   1 +
>  MAINTAINERS                             |   3 +
>  drivers/hwmon/Kconfig                   |   9 +
>  drivers/hwmon/Makefile                  |   1 +
>  drivers/hwmon/gsc-hwmon.c               | 390 ++++++++++++++++++++++++++++++++
>  include/linux/platform_data/gsc_hwmon.h |  44 ++++
>  7 files changed, 501 insertions(+)
>  create mode 100644 Documentation/hwmon/gsc-hwmon.rst
>  create mode 100644 drivers/hwmon/gsc-hwmon.c
>  create mode 100644 include/linux/platform_data/gsc_hwmon.h

Applied, thanks.

-- 
Lee Jones [李琼斯]
Linaro Services Technical Lead
Linaro.org │ Open source software for ARM SoCs
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