static void dw_writer(struct dw_spi *dws)
{
u32 max = tx_max(dws);
u16 txw = 0;
DBG_SPI("%dbyte tx:",dws->n_bytes);
while (max--) {
/* Set the tx word if the transfer's original "tx" is not null */
if (dws->tx_end - dws->len) {
if (dws->n_bytes == 1)
{
txw = *(u8 *)(dws->tx);
DBG_SPI("0x%02x,", *(u8 *)(dws->tx));
}
else
{
txw = *(u16 *)(dws->tx);
DBG_SPI("0x%02x,", *(u16 *)(dws->tx));
}
}
dw_writew(dws, SPIM_TXDR, txw);
dws->tx += dws->n_bytes;
}
//it is neccessary
wait_till_not_busy(dws);
DBG_SPI("\n");
}
static void rockchip_spi_pio_writer(struct rockchip_spi *rs)
{
u32 max = tx_max(rs);
u32 txw = 0;
while (max--) {
if (rs->n_bytes == 1)
txw = *(u8 *)(rs->tx);
else
txw = *(u16 *)(rs->tx);
writel_relaxed(txw, rs->regs + ROCKCHIP_SPI_TXDR);
rs->tx += rs->n_bytes;
}
}
static void dw_writer(struct dw_spi *dws)
{
u32 max = tx_max(dws);
u16 txw = 0;
while (max--) {
/* Set the tx word if the transfer's original "tx" is not null */
if (dws->tx_end - dws->len) {
if (dws->n_bytes == 1)
txw = *(u8 *)(dws->tx);
else
txw = *(u16 *)(dws->tx);
}
dw_writew(dws, DW_SPI_DR, txw);
dws->tx += dws->n_bytes;
}
}