diff options
Diffstat (limited to 'drivers/spi/mpc8xxx_spi.c')
| -rw-r--r-- | drivers/spi/mpc8xxx_spi.c | 22 |
1 files changed, 14 insertions, 8 deletions
diff --git a/drivers/spi/mpc8xxx_spi.c b/drivers/spi/mpc8xxx_spi.c index 0c77f95159..3016cfe2ca 100644 --- a/drivers/spi/mpc8xxx_spi.c +++ b/drivers/spi/mpc8xxx_spi.c @@ -53,11 +53,14 @@ void spi_init(void) * some registers */ spi->mode = SPI_MODE_REV | SPI_MODE_MS | SPI_MODE_EN; - spi->mode = (spi->mode & 0xfff0ffff) | BIT(16); /* Use SYSCLK / 8 - (16.67MHz typ.) */ - spi->event = 0xffffffff; /* Clear all SPI events */ - spi->mask = 0x00000000; /* Mask all SPI interrupts */ - spi->com = 0; /* LST bit doesn't do anything, so disregard */ + /* Use SYSCLK / 8 (16.67MHz typ.) */ + spi->mode = (spi->mode & 0xfff0ffff) | BIT(16); + /* Clear all SPI events */ + spi->event = 0xffffffff; + /* Mask all SPI interrupts */ + spi->mask = 0x00000000; + /* LST bit doesn't do anything, so disregard */ + spi->com = 0; } int spi_claim_bus(struct spi_slave *slave) @@ -84,9 +87,10 @@ int spi_xfer(struct spi_slave *slave, uint bitlen, const void *dout, void *din, if (flags & SPI_XFER_BEGIN) spi_cs_activate(slave); - spi->event = 0xffffffff; /* Clear all SPI events */ + /* Clear all SPI events */ + spi->event = 0xffffffff; - /* handle data in 32-bit chunks */ + /* Handle data in 32-bit chunks */ while (numBlks--) { tmpdout = 0; charSize = (bitlen >= 32 ? 32 : bitlen); @@ -120,7 +124,9 @@ int spi_xfer(struct spi_slave *slave, uint bitlen, const void *dout, void *din, spi->mode |= SPI_MODE_EN; - spi->tx = tmpdout; /* Write the data out */ + /* Write the data out */ + spi->tx = tmpdout; + debug("*** spi_xfer: ... %08x written\n", tmpdout); /* |