mtd: spi: spi-nor-core: Add SPI MEM support
authorVignesh R <vigneshr@ti.com>
Tue, 5 Feb 2019 05:59:18 +0000 (11:29 +0530)
committerJagan Teki <jagan@amarulasolutions.com>
Thu, 7 Feb 2019 10:03:21 +0000 (15:33 +0530)
commit492e65b29b4c75ba6139577e10c9a5a6747ffa5a
tree0b49bc831c3d6542c3b40f15d4c892c316e55654
parent7aeedac01534ab343c28abed60f8e0fb9311bbee
mtd: spi: spi-nor-core: Add SPI MEM support

Many SPI controllers have special MMIO interfaces which provide
accelerated read/write access but require knowledge of flash parameters
to make use of it. Recent spi-mem layer provides a way to support such
controllers.
Therefore, add spi-mem support to spi-nor-core as a way to support SPI
controllers with MMIO interface. SPI MEM layer takes care of translating
spi_mem_ops to spi_xfer()s in case of legacy SPI controllers.

Signed-off-by: Vignesh R <vigneshr@ti.com>
Tested-by: Simon Goldschmidt <simon.k.r.goldschmidt@gmail.com>
Tested-by: Stefan Roese <sr@denx.de>
Tested-by: Horatiu Vultur <horatiu.vultur@microchip.com>
Reviewed-by: Jagan Teki <jagan@openedev.com>
Tested-by: Jagan Teki <jagan@amarulasolutions.com> #zynq-microzed
drivers/mtd/spi/spi-nor-core.c