On Sat, 2 Feb 2019 08:46:38 +0000 <Tudor.Ambarus@xxxxxxxxxxxxx> wrote: > On 02/02/2019 09:13 AM, Boris Brezillon wrote: > > On Sat, 2 Feb 2019 04:07:33 +0000 > > <Tudor.Ambarus@xxxxxxxxxxxxx> wrote: > > > >> From: Tudor Ambarus <tudor.ambarus@xxxxxxxxxxxxx> > >> > >> 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@xxxxxxxxxxxxx> > >> --- > >> v3: new patch > >> > >> drivers/spi/atmel-quadspi.c | 12 +++--------- > >> 1 file changed, 3 insertions(+), 9 deletions(-) > >> > >> diff --git a/drivers/spi/atmel-quadspi.c b/drivers/spi/atmel-quadspi.c > >> index d26d4cd0e36b..bfa5f5e92d96 100644 > >> --- a/drivers/spi/atmel-quadspi.c > >> +++ b/drivers/spi/atmel-quadspi.c > >> @@ -113,11 +113,7 @@ > >> #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_SAMA5D2_WRITE_TRSFR BIT(13) > > > > Can you define QSPI_IFR_TFRTYP_MEM (bit 12) even if it's not used yet? > > Shouldn't be introduced with the dir map support? I like when all regs/reg-fields are defined, even if they're not used. In this case, you're cleary splitting 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). Just think it's better to add bit 12 definition now.
