diff options
Diffstat (limited to 'drivers/spi')
| -rw-r--r-- | drivers/spi/spi-fsl-spi.c | 12 |
1 files changed, 7 insertions, 5 deletions
diff --git a/drivers/spi/spi-fsl-spi.c b/drivers/spi/spi-fsl-spi.c index 702756c25aa7..4651f65c9046 100644 --- a/drivers/spi/spi-fsl-spi.c +++ b/drivers/spi/spi-fsl-spi.c @@ -181,8 +181,8 @@ static int mspi_apply_qe_mode_quirks(struct spi_mpc8xxx_cs *cs, struct spi_device *spi, int bits_per_word) { - /* QE uses Little Endian for words > 8 - * so transform all words > 8 into 8 bits + /* CPM/QE uses Little Endian for words > 8 + * so transform 16 and 32 bits words into 8 bits * Unfortnatly that doesn't work for LSB so * reject these for now */ /* Note: 32 bits word, LSB works iff @@ -190,9 +190,11 @@ static int mspi_apply_qe_mode_quirks(struct spi_mpc8xxx_cs *cs, if (spi->mode & SPI_LSB_FIRST && bits_per_word > 8) return -EINVAL; - if (bits_per_word > 8) + if (bits_per_word <= 8) + return bits_per_word; + if (bits_per_word == 16 || bits_per_word == 32) return 8; /* pretend its 8 bits */ - return bits_per_word; + return -EINVAL; } static int fsl_spi_setup_transfer(struct spi_device *spi, @@ -222,7 +224,7 @@ static int fsl_spi_setup_transfer(struct spi_device *spi, bits_per_word = mspi_apply_cpu_mode_quirks(cs, spi, mpc8xxx_spi, bits_per_word); - else if (mpc8xxx_spi->flags & SPI_QE) + else bits_per_word = mspi_apply_qe_mode_quirks(cs, spi, bits_per_word); |