linux-kernel - Re: [PATCH 00/14] eeprom: at24: driver rework and at24cs/at24mac support

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Date:	Wed, 6 Jul 2016 17:04:41 +0200
From:	Bartosz Golaszewski <bgolaszewski@...libre.com>
To:	Wolfram Sang <wsa@...-dreams.de>,
	linux-i2c <linux-i2c@...r.kernel.org>,
	LKML <linux-kernel@...r.kernel.org>,
	Andrew Lunn <andrew@...n.ch>,
	Srinivas Kandagatla <srinivas.kandagatla@...aro.org>,
	Maxime Ripard <maxime.ripard@...e-electrons.com>,
	GregKH <greg@...ah.com>
Cc:	Bartosz Golaszewski <bgolaszewski@...libre.com>
Subject: Re: [PATCH 00/14] eeprom: at24: driver rework and at24cs/at24mac support

2016-05-29 23:53 GMT+02:00 Bartosz Golaszewski <bgolaszewski@...libre.com>:
> Chips from the at24cs EEPROM series have an additional read-only
> memory area containing a factory pre-programmed serial number. In
> order to access it, a dummy write must be executed before reading
> the serial number bytes.
>
> Chips from the at24mac familiy, apart from the serial number, have
> a second special memory area containing a factory programmed
> EUI-48/EUI64 mac address.
>
> The read-only serial/mac memory area is accessible on a different i2c
> slave address (addr + 0x08). This patchset makes it possible to
> instantiate a separate at24 device on this second address and access
> the read-only area through the regular eeprom sysfs attribute or the
> new nvmem subsystem.
>
> This series also contains several patches refactoring the driver code.
> Most notably: the low-level read/write routines are split into more
> specialized, smaller functions that no longer perform functionality
> checks at runtime.
>
> Minor readability tweaks are also included.
>
> Tested with at24cs32 and at24cs02 chips (for both 16 and 8 bit address
> pointers). I have no means of testing the support for at24mac chips, I
> relied solely on the datasheet.
>
> Bartosz Golaszewski (14):
>   eeprom: at24: improve the device_id table readability
>   eeprom: at24: move at24_read() below at24_eeprom_write()
>   eeprom: at24: coding style fixes
>   eeprom: at24: call read/write functions via function pointers
>   eeprom: at24: hide the read/write loop behind a macro
>   eeprom: at24: split at24_eeprom_read() into specialized functions
>   eeprom: at24: split at24_eeprom_write() into specialized functions
>   eeprom: at24: platform_data: use BIT() macro
>   eeprom: at24: platform_data: add serial number flag
>   eeprom: at24: support reading the serial number
>   eeprom: at24: add the at24cs series to the list of supported devices
>   eeprom: at24: platform_data: add at24mac series flag
>   eeprom: at24: add support for at24mac series
>   eeprom: at24: add at24mac chips to the list of supported devices
>
>  drivers/misc/eeprom/at24.c         | 498 +++++++++++++++++++++++++------------
>  include/linux/platform_data/at24.h |  11 +-
>  2 files changed, 350 insertions(+), 159 deletions(-)
>
> --
> 2.7.4
>

Gentle ping.

Any chance of getting this series picked up for 4.8?

Thanks,
Bartosz Golaszewski