@@ -74,23 +74,6 @@ orion_spi_clrbits(struct orion_spi *orion_spi, u32 reg, u32 mask)
writel(val, reg_addr);
}
-static int orion_spi_set_transfer_size(struct orion_spi *orion_spi, int size)
-{
- if (size == 16) {
- orion_spi_setbits(orion_spi, ORION_SPI_IF_CONFIG_REG,
- ORION_SPI_IF_8_16_BIT_MODE);
- } else if (size == 8) {
- orion_spi_clrbits(orion_spi, ORION_SPI_IF_CONFIG_REG,
- ORION_SPI_IF_8_16_BIT_MODE);
- } else {
- pr_debug("Bad bits per word value %d (only 8 or 16 are allowed).\n",
- size);
- return -EINVAL;
- }
-
- return 0;
-}
-
static int orion_spi_baudrate_set(struct spi_device *spi, unsigned int speed)
{
u32 tclk_hz;
@@ -169,7 +152,14 @@ orion_spi_setup_transfer(struct spi_device *spi, struct spi_transfer *t)
if (rc)
return rc;
- return orion_spi_set_transfer_size(orion_spi, bits_per_word);
+ if (bits_per_word == 16)
+ orion_spi_setbits(orion_spi, ORION_SPI_IF_CONFIG_REG,
+ ORION_SPI_IF_8_16_BIT_MODE);
+ else
+ orion_spi_clrbits(orion_spi, ORION_SPI_IF_CONFIG_REG,
+ ORION_SPI_IF_8_16_BIT_MODE);
+
+ return 0;
}
static void orion_spi_set_cs(struct orion_spi *orion_spi, int enable)
@@ -425,6 +415,7 @@ static int orion_spi_probe(struct platform_device *pdev)
master->setup = orion_spi_setup;
master->transfer_one_message = orion_spi_transfer_one_message;
master->num_chipselect = ORION_NUM_CHIPSELECTS;
+ master->bits_per_word_mask = SPI_BPW_MASK(8) | SPI_BPW_MASK(16);
platform_set_drvdata(pdev, master);
Set bits_per_word_mask so spi core will reject transfers that attempt to use an unsupported bits_per_word value. Signed-off-by: Axel Lin <axel.lin@ingics.com> --- drivers/spi/spi-orion.c | 27 +++++++++------------------ 1 file changed, 9 insertions(+), 18 deletions(-)