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authorTudor Ambarus <tudor.ambarus@microchip.com>2019-02-05 20:33:25 +0300
committerMark Brown <broonie@kernel.org>2019-02-06 20:20:40 +0300
commitb456fd18ca69f3e6f0c846322ffa4def5379dd4a (patch)
tree322d429618f28a6c36c8d65a346c6b8c0b3a14f8 /drivers/spi
parentcae417b2a89b40480bf4f259417ba7148bf4c8e2 (diff)
downloadlinux-b456fd18ca69f3e6f0c846322ffa4def5379dd4a.tar.xz
spi: atmel-quadspi: rework transfer macros
Split the TFRTYP_TRSFR_ bitfields in 2: one bit encoding the mem/reg transfer type and one bit encoding the direction of the transfer (read/write). Remove NOP when setting read transfer type. Remove useless setting of write transfer type when op->data.dir == SPI_MEM_DATA_IN && !op->data.nbytes. QSPI_IFR_TFRTYP_TRSFR_WRITE is specific just to sama5d2 qspi, rename it to QSPI_IFR_SAMA5D2_WRITE_TRSFR. Signed-off-by: Tudor Ambarus <tudor.ambarus@microchip.com> Reviewed-by: Boris Brezillon <boris.brezillon@collabora.com> Signed-off-by: Mark Brown <broonie@kernel.org>
Diffstat (limited to 'drivers/spi')
-rw-r--r--drivers/spi/atmel-quadspi.c13
1 files changed, 4 insertions, 9 deletions
diff --git a/drivers/spi/atmel-quadspi.c b/drivers/spi/atmel-quadspi.c
index ce4f8a648f45..19a3980775ad 100644
--- a/drivers/spi/atmel-quadspi.c
+++ b/drivers/spi/atmel-quadspi.c
@@ -113,11 +113,8 @@
#define QSPI_IFR_OPTL_4BIT (2 << 8)
#define QSPI_IFR_OPTL_8BIT (3 << 8)
#define QSPI_IFR_ADDRL BIT(10)
-#define QSPI_IFR_TFRTYP_MASK GENMASK(13, 12)
-#define QSPI_IFR_TFRTYP_TRSFR_READ (0 << 12)
-#define QSPI_IFR_TFRTYP_TRSFR_READ_MEM (1 << 12)
-#define QSPI_IFR_TFRTYP_TRSFR_WRITE (2 << 12)
-#define QSPI_IFR_TFRTYP_TRSFR_WRITE_MEM (3 << 13)
+#define QSPI_IFR_TFRTYP_MEM BIT(12)
+#define QSPI_IFR_SAMA5D2_WRITE_TRSFR BIT(13)
#define QSPI_IFR_CRM BIT(14)
#define QSPI_IFR_NBDUM_MASK GENMASK(20, 16)
#define QSPI_IFR_NBDUM(n) (((n) << 16) & QSPI_IFR_NBDUM_MASK)
@@ -275,10 +272,8 @@ static int atmel_qspi_exec_op(struct spi_mem *mem, const struct spi_mem_op *op)
if (op->data.nbytes)
ifr |= QSPI_IFR_DATAEN;
- if (op->data.dir == SPI_MEM_DATA_IN && op->data.nbytes)
- ifr |= QSPI_IFR_TFRTYP_TRSFR_READ;
- else
- ifr |= QSPI_IFR_TFRTYP_TRSFR_WRITE;
+ if (op->data.dir == SPI_MEM_DATA_OUT)
+ ifr |= QSPI_IFR_SAMA5D2_WRITE_TRSFR;
/* Clear pending interrupts */
(void)readl_relaxed(aq->regs + QSPI_SR);