int spi_xfer(struct spi_slave *slave, unsigned int bitlen, const void *dout,
void *din, unsigned long flags)
{
struct zynq_qspi_slave *qspi;
struct spi_transfer transfer;
debug("%s: slave: 0x%08x bitlen: %d dout: 0x%08x ", __func__,
(u32)slave, bitlen, (u32)dout);
debug("din: 0x%08x flags: 0x%lx\n", (u32)din, flags);
qspi = (struct zynq_qspi_slave *)slave;
transfer.tx_buf = dout;
transfer.rx_buf = din;
transfer.len = bitlen / 8;
/*
* Festering sore.
* Assume that the beginning of a transfer with bits to
* transmit must contain a device command.
*/
if (dout && flags & SPI_XFER_BEGIN)
qspi->qspi.master.is_inst = 1;
else
qspi->qspi.master.is_inst = 0;
if (flags & SPI_XFER_END)
transfer.cs_change = 1;
else
transfer.cs_change = 0;
if (flags & SPI_FLASH_U_PAGE)
qspi->qspi.master.u_page = 1;
else
qspi->qspi.master.u_page = 0;
transfer.delay_usecs = 0;
transfer.bits_per_word = 32;
transfer.speed_hz = qspi->qspi.max_speed_hz;
zynq_qspi_transfer(&qspi->qspi, &transfer);
return 0;
}
static int zynq_qspi_xfer(struct udevice *dev, unsigned int bitlen, const void *dout,
void *din, unsigned long flags)
{
struct udevice *bus = dev->parent;
struct zynq_qspi_priv *priv = dev_get_priv(bus);
debug("%s", __func__);
debug("%s: slave: 0x%08x bitlen: %d dout: 0x%08x ", __func__,
(u32)priv, bitlen, (u32)dout);
debug("din: 0x%08x flags: 0x%lx\n", (u32)din, flags);
priv->txbuf = dout;
priv->rxbuf = din;
priv->len = bitlen / 8;
/*
* Festering sore.
* Assume that the beginning of a transfer with bits to
* transmit must contain a device command.
*/
if (dout && flags & SPI_XFER_BEGIN)
priv->is_inst = 1;
else
priv->is_inst = 0;
if (flags & SPI_XFER_END)
priv->cs_change = 1;
else
priv->cs_change = 0;
if (flags & SPI_XFER_U_PAGE)
priv->u_page = 1;
else
priv->u_page = 0;
zynq_qspi_transfer(priv);
return 0;
}
