diff options
Diffstat (limited to 'drivers/spi')
| -rw-r--r-- | drivers/spi/spi-fsl-espi.c | 8 |
1 files changed, 6 insertions, 2 deletions
diff --git a/drivers/spi/spi-fsl-espi.c b/drivers/spi/spi-fsl-espi.c index 4fbcc36..4222578 100644 --- a/drivers/spi/spi-fsl-espi.c +++ b/drivers/spi/spi-fsl-espi.c @@ -98,6 +98,7 @@ struct fsl_espi { const void *tx; void *rx; + bool swab; unsigned int rx_len; unsigned int tx_len; unsigned int rxskip; @@ -140,14 +141,14 @@ static void fsl_espi_memcpy_swab(void *to, const void *from, struct spi_message *m, struct spi_transfer *t) { + struct fsl_espi *espi = spi_master_get_devdata(m->spi->master); unsigned int len = t->len; - if (!(m->spi->mode & SPI_LSB_FIRST) || t->bits_per_word <= 8) { + if (!espi->swab) { memcpy(to, from, len); return; } - /* In case of LSB-first and bits_per_word > 8 byte-swap all words */ while (len) if (len >= 4) { *(u32 *)to = swahb32p(from); @@ -384,6 +385,9 @@ static int fsl_espi_trans(struct spi_message *m, struct spi_transfer *trans) struct spi_device *spi = m->spi; int ret; + /* In case of LSB-first and bits_per_word > 8 byte-swap all words */ + espi->swab = spi->mode & SPI_LSB_FIRST && trans->bits_per_word > 8; + espi->rxskip = fsl_espi_check_rxskip_mode(m); if (trans->rx_nbits == SPI_NBITS_DUAL && !espi->rxskip) { dev_err(espi->dev, "Dual output mode requires RXSKIP mode!\n"); |
