#define DRIVER_NAME "fsl-dspi"
-#define TRAN_STATE_RX_VOID 0x01
-#define TRAN_STATE_TX_VOID 0x02
#define TRAN_STATE_WORD_ODD_NUM 0x04
#define DSPI_FIFO_SIZE 4
rx_word = is_double_byte_mode(dspi);
- if (!(dspi->dataflags & TRAN_STATE_RX_VOID)) {
+ if (dspi->rx) {
for (i = 0; i < dma->curr_xfer_len; i++) {
d = dspi->dma->rx_dma_buf[i];
rx_word ? (*(u16 *)dspi->rx = d) :
{
u16 d16;
- if (!(dspi->dataflags & TRAN_STATE_TX_VOID))
+ if (dspi->tx) {
d16 = tx_word ? *(u16 *)dspi->tx : *(u8 *)dspi->tx;
- else
+ dspi->tx += tx_word + 1;
+ } else {
d16 = dspi->void_write_data;
+ }
- dspi->tx += tx_word + 1;
dspi->len -= tx_word + 1;
return SPI_PUSHR_TXDATA(d16) |
regmap_read(dspi->regmap, SPI_POPR, &val);
d = SPI_POPR_RXDATA(val);
- if (!(dspi->dataflags & TRAN_STATE_RX_VOID))
+ if (dspi->rx) {
rx_word ? (*(u16 *)dspi->rx = d) : (*(u8 *)dspi->rx = d);
-
- dspi->rx += rx_word + 1;
+ dspi->rx += rx_word + 1;
+ }
}
static int dspi_eoq_write(struct fsl_dspi *dspi)
dspi->rx_end = dspi->rx + transfer->len;
dspi->len = transfer->len;
- if (!dspi->rx)
- dspi->dataflags |= TRAN_STATE_RX_VOID;
-
- if (!dspi->tx)
- dspi->dataflags |= TRAN_STATE_TX_VOID;
-
regmap_write(dspi->regmap, SPI_MCR, dspi->cur_chip->mcr_val);
regmap_update_bits(dspi->regmap, SPI_MCR,
SPI_MCR_CLR_TXF | SPI_MCR_CLR_RXF,