diff options
| -rw-r--r-- | drivers/spi/spi-orion.c | 11 |
1 files changed, 9 insertions, 2 deletions
diff --git a/drivers/spi/spi-orion.c b/drivers/spi/spi-orion.c index 6b001c4a5640..be2e87ee8b31 100644 --- a/drivers/spi/spi-orion.c +++ b/drivers/spi/spi-orion.c @@ -39,6 +39,8 @@ #define ORION_SPI_IF_CTRL_REG 0x00 #define ORION_SPI_IF_CONFIG_REG 0x04 +#define ORION_SPI_IF_RXLSBF BIT(14) +#define ORION_SPI_IF_TXLSBF BIT(13) #define ORION_SPI_DATA_OUT_REG 0x08 #define ORION_SPI_DATA_IN_REG 0x0c #define ORION_SPI_INT_CAUSE_REG 0x10 @@ -234,6 +236,11 @@ orion_spi_mode_set(struct spi_device *spi) reg |= ORION_SPI_MODE_CPOL; if (spi->mode & SPI_CPHA) reg |= ORION_SPI_MODE_CPHA; + if (spi->mode & SPI_LSB_FIRST) + reg |= ORION_SPI_IF_RXLSBF | ORION_SPI_IF_TXLSBF; + else + reg &= ~(ORION_SPI_IF_RXLSBF | ORION_SPI_IF_TXLSBF); + writel(reg, spi_reg(orion_spi, ORION_SPI_IF_CONFIG_REG)); } @@ -591,8 +598,8 @@ static int orion_spi_probe(struct platform_device *pdev) master->bus_num = cell_index; } - /* we support only mode 0, and no options */ - master->mode_bits = SPI_CPHA | SPI_CPOL; + /* we support all 4 SPI modes and LSB first option */ + master->mode_bits = SPI_CPHA | SPI_CPOL | SPI_LSB_FIRST; master->set_cs = orion_spi_set_cs; master->transfer_one = orion_spi_transfer_one; master->num_chipselect = ORION_NUM_CHIPSELECTS; |