linux-kernel - Re: [PATCH v11 2/3] mfd: add Gateworks System Controller core driver

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Date:   Wed, 20 May 2020 10:30:45 +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 v11 2/3] mfd: add Gateworks System Controller core driver

On Fri, 15 May 2020, Tim Harvey wrote:

> The Gateworks System Controller (GSC) is an I2C slave controller
> implemented with an MSP430 micro-controller whose firmware embeds the
> following features:
>  - I/O expander (16 GPIO's) using PCA955x protocol
>  - Real Time Clock using DS1672 protocol
>  - User EEPROM using AT24 protocol
>  - HWMON using custom protocol
>  - Interrupt controller with tamper detect, user pushbotton
>  - Watchdog controller capable of full board power-cycle
>  - Power Control capable of full board power-cycle
> 
> see http://trac.gateworks.com/wiki/gsc for more details
> 
> Signed-off-by: Tim Harvey <tharvey@...eworks.com>
> Acked-for-MFD-by: Lee Jones <lee.jones@...aro.org>
> ---
> v11:
> - fix compile error
> 
> v10:
> - fix typo and gramatical errors in Kconfig and comment block
> - drop unused i2c device-id table
> - added Lee's ack in s-o-b
> 
> v9:
> - rebase against 5.7-rc2
> - cleanup gsc_powerdown() by using BIT(), put_unaligned_le32(), and avoid
>   unnecessary assignments
> - rename GSC_CTRL_1 SLEEP related defines to simplify
> - add better description and sub-module info to driver description
> - whitespace changes per review
> - remove unused irq_data pointer in ddata
> - remove unnecesary i2c_set_clientdata
> - use devm_i2c_new_dummy_device to avoid need of free's
> - change regsiter definitions to enum
> - export gsc_{read,write} instead of sharing them via ddata
> 
> v8:
> - whitespace fixes
> - describe sub-devices in Kconfig
> - add error print for invalid command
> - update copyright
> - use devm_of_platform_populate
> - use probe_new
> - move hwmon's regmap init to hwmon
> 
> v7:
> - remove irq from private data struct
> 
> v6:
> - remove duplicate signature and fix commit log
> 
> v5:
> - simplify powerdown function
> 
> v4:
> - remove hwmon max reg check/define
> - fix powerdown function
> 
> v3:
> - rename gsc->gateworks-gsc
> - remove uncecessary include for linux/mfd/core.h
> - upercase I2C in comments
> - remove i2c debug
> - remove uncecessary comments
> - don't use KBUILD_MODNAME for name
> - remove unnecessary v1/v2/v3 tracking
> - unregister hwmon i2c adapter on remove
> 
> v2:
> - change license comment block style
> - remove COMPILE_TEST (Randy)
> - fixed whitespace issues
> - replaced a printk with dev_err
> ---
>  MAINTAINERS                 |   8 ++
>  drivers/mfd/Kconfig         |  15 +++
>  drivers/mfd/Makefile        |   1 +
>  drivers/mfd/gateworks-gsc.c | 277 ++++++++++++++++++++++++++++++++++++++++++++
>  include/linux/mfd/gsc.h     |  76 ++++++++++++
>  5 files changed, 377 insertions(+)
>  create mode 100644 drivers/mfd/gateworks-gsc.c
>  create mode 100644 include/linux/mfd/gsc.h

Applied, thanks.

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