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SubjectRe: [PATCH 00/14] eeprom: at24: driver rework and at24cs/at24mac support
2016-05-29 23:53 GMT+02:00 Bartosz Golaszewski <>:
> 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?

Bartosz Golaszewski

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