mlxsw: i2c: Allow flexible setting of I2C transactions size

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Current implementation uses fixed size of I2C data transaction buffer.
Allow to set size of I2C transactions according to I2C physical adapter
capability. For that purpose adapter read and write size is obtained
from the I2C physical adapter and buffer size is set according to the
minimum of these two values. If adapter does not provide such info,
default buffer size is to be used.
It allows to improve performance of I2C access to silicon when long
size transactions are used.

Signed-off-by: Vadim Pasternak <vadimp@mellanox.com>
Acked-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

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Vadim Pasternak 2019-05-29 11:47:16 +03:00 • committed by David S. Miller

parent 9bbd7efbc0

commit 3029a693be

1 changed files with 46 additions and 18 deletions

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drivers/net/ethernet/mellanox/mlxsw/i2c.c

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