diff options
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/spi/mpc8xxx_spi.c | 16 |
1 files changed, 5 insertions, 11 deletions
diff --git a/drivers/spi/mpc8xxx_spi.c b/drivers/spi/mpc8xxx_spi.c index 63d956a295..1dd5bd9799 100644 --- a/drivers/spi/mpc8xxx_spi.c +++ b/drivers/spi/mpc8xxx_spi.c @@ -119,21 +119,15 @@ int spi_xfer(struct spi_slave *slave, uint bitlen, const void *dout, void *din, /* Shift data so it's msb-justified */ tmpdout = *(u32 *)dout >> (32 - xfer_bitlen); - /* The LEN field of the SPMODE register is set as follows: - * - * Bit length setting - * len <= 4 3 - * 4 < len <= 16 len - 1 - * len > 16 0 - */ - clrbits_be32(&spi->mode, SPI_MODE_EN); - if (bitlen <= 4) + /* Set up length for this transfer */ + + if (bitlen <= 4) /* 4 bits or less */ set_char_len(spi, 3); - else if (bitlen <= 16) + else if (bitlen <= 16) /* at most 16 bits */ set_char_len(spi, bitlen - 1); - else + else /* more than 16 bits -> full 32 bit transfer */ set_char_len(spi, 0); if (bitlen > 16) { |