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Subject[PATCH] spi: atmel-quadspi: Use optimezed memcpy_fromio()/memcpy_toio()
Date
Optimezed mem*io operations are defined for LE platforms, use them.

The ARM and !ARCH_EBSA110 dependencies for COMPILE_TEST were added
only for the _memcpy_fromio()/_memcpy_toio() functions. Drop these
dependencies.

Tested unaligned accesses on both sama5d2 and sam9x60 QSPI controllers
using SPI NOR flashes, everything works ok. The following performance
improvement can be seen when running mtd_speedtest:

sama5d2_xplained (mx25l25635e)
- before:
mtd_speedtest: eraseblock write speed is 983 KiB/s
mtd_speedtest: eraseblock read speed is 6150 KiB/s
- after:
mtd_speedtest: eraseblock write speed is 1055 KiB/s
mtd_speedtest: eraseblock read speed is 20144 KiB/s

sam9x60ek (sst26vf064b)
- before:
mtd_speedtest: eraseblock write speed is 4770 KiB/s
mtd_speedtest: eraseblock read speed is 8062 KiB/s
- after:
mtd_speedtest: eraseblock write speed is 4524 KiB/s
mtd_speedtest: eraseblock read speed is 21186 KiB/s

Signed-off-by: Tudor Ambarus <tudor.ambarus@microchip.com>
---
drivers/spi/Kconfig | 2 +-
drivers/spi/atmel-quadspi.c | 8 ++++----
2 files changed, 5 insertions(+), 5 deletions(-)

diff --git a/drivers/spi/Kconfig b/drivers/spi/Kconfig
index fd64c865f6ef..b89d03a36cbd 100644
--- a/drivers/spi/Kconfig
+++ b/drivers/spi/Kconfig
@@ -103,7 +103,7 @@ config SPI_AT91_USART

config SPI_ATMEL_QUADSPI
tristate "Atmel Quad SPI Controller"
- depends on ARCH_AT91 || (ARM && COMPILE_TEST && !ARCH_EBSA110)
+ depends on ARCH_AT91 || COMPILE_TEST
depends on OF && HAS_IOMEM
help
This enables support for the Quad SPI controller in master mode.
diff --git a/drivers/spi/atmel-quadspi.c b/drivers/spi/atmel-quadspi.c
index a898755fb41e..8c009c175f2c 100644
--- a/drivers/spi/atmel-quadspi.c
+++ b/drivers/spi/atmel-quadspi.c
@@ -430,11 +430,11 @@ static int atmel_qspi_exec_op(struct spi_mem *mem, const struct spi_mem_op *op)

/* Send/Receive data */
if (op->data.dir == SPI_MEM_DATA_IN)
- _memcpy_fromio(op->data.buf.in, aq->mem + offset,
- op->data.nbytes);
+ memcpy_fromio(op->data.buf.in, aq->mem + offset,
+ op->data.nbytes);
else
- _memcpy_toio(aq->mem + offset, op->data.buf.out,
- op->data.nbytes);
+ memcpy_toio(aq->mem + offset, op->data.buf.out,
+ op->data.nbytes);

/* Release the chip-select */
atmel_qspi_write(QSPI_CR_LASTXFER, aq, QSPI_CR);
--
2.25.1
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