diff options
| -rw-r--r-- | drivers/spi/davinci_spi.c | 20 |
1 files changed, 8 insertions, 12 deletions
diff --git a/drivers/spi/davinci_spi.c b/drivers/spi/davinci_spi.c index 105c686b2ce..82dddf83daf 100644 --- a/drivers/spi/davinci_spi.c +++ b/drivers/spi/davinci_spi.c @@ -65,9 +65,10 @@ #define SPI_INTLVL_1 0x000001FFu #define SPI_INTLVL_0 0x00000000u -/* SPIDAT1 */ -#define SPIDAT1_CSHOLD_MASK BIT(28) -#define SPIDAT1_CSNR_SHIFT 16 +/* SPIDAT1 (upper 16 bit defines) */ +#define SPIDAT1_CSHOLD_MASK BIT(12) + +/* SPIGCR1 */ #define SPIGCR1_CLKMOD_MASK BIT(1) #define SPIGCR1_MASTER_MASK BIT(0) #define SPIGCR1_LOOPBACK_MASK BIT(16) @@ -235,8 +236,8 @@ static void davinci_spi_chipselect(struct spi_device *spi, int value) { struct davinci_spi *davinci_spi; struct davinci_spi_platform_data *pdata; - u32 data1_reg_val; u8 chip_sel = spi->chip_select; + u16 spidat1_cfg = CS_DEFAULT; davinci_spi = spi_master_get_devdata(spi->master); pdata = davinci_spi->pdata; @@ -245,17 +246,12 @@ static void davinci_spi_chipselect(struct spi_device *spi, int value) * Board specific chip select logic decides the polarity and cs * line for the controller */ - data1_reg_val = CS_DEFAULT << SPIDAT1_CSNR_SHIFT; if (value == BITBANG_CS_ACTIVE) { - data1_reg_val |= SPIDAT1_CSHOLD_MASK; - data1_reg_val &= ~((0x1 << chip_sel) << SPIDAT1_CSNR_SHIFT); + spidat1_cfg |= SPIDAT1_CSHOLD_MASK; + spidat1_cfg &= ~(0x1 << chip_sel); } - iowrite32(data1_reg_val, davinci_spi->base + SPIDAT1); - while ((ioread32(davinci_spi->base + SPIBUF) - & SPIBUF_RXEMPTY_MASK) == 0) - cpu_relax(); - + iowrite16(spidat1_cfg, davinci_spi->base + SPIDAT1 + 2); } /** |