diff options
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/spi/spi-dw-core.c | 4 | ||||
| -rw-r--r-- | drivers/spi/spi-dw-mmio.c | 2 | ||||
| -rw-r--r-- | drivers/spi/spi-dw.h | 7 |
3 files changed, 9 insertions, 4 deletions
diff --git a/drivers/spi/spi-dw-core.c b/drivers/spi/spi-dw-core.c index cbb65d3ea13e..f01a43b1954c 100644 --- a/drivers/spi/spi-dw-core.c +++ b/drivers/spi/spi-dw-core.c @@ -104,7 +104,7 @@ void dw_spi_set_cs(struct spi_device *spi, bool enable) */ if (cs_high == enable) dw_writel(dws, DW_SPI_SER, BIT(spi->chip_select)); - else if (dws->cs_override) + else if (dws->caps & DW_SPI_CAP_CS_OVERRIDE) dw_writel(dws, DW_SPI_SER, 0); } EXPORT_SYMBOL_GPL(dw_spi_set_cs); @@ -444,7 +444,7 @@ static void spi_hw_init(struct device *dev, struct dw_spi *dws) } /* enable HW fixup for explicit CS deselect for Amazon's alpine chip */ - if (dws->cs_override) + if (dws->caps & DW_SPI_CAP_CS_OVERRIDE) dw_writel(dws, DW_SPI_CS_OVERRIDE, 0xF); } diff --git a/drivers/spi/spi-dw-mmio.c b/drivers/spi/spi-dw-mmio.c index 18772c0c9220..7111cb7ca23b 100644 --- a/drivers/spi/spi-dw-mmio.c +++ b/drivers/spi/spi-dw-mmio.c @@ -204,7 +204,7 @@ static int dw_spi_mscc_sparx5_init(struct platform_device *pdev, static int dw_spi_alpine_init(struct platform_device *pdev, struct dw_spi_mmio *dwsmmio) { - dwsmmio->dws.cs_override = 1; + dwsmmio->dws.caps = DW_SPI_CAP_CS_OVERRIDE; /* Register hook to configure CTRLR0 */ dwsmmio->dws.update_cr0 = dw_spi_update_cr0; diff --git a/drivers/spi/spi-dw.h b/drivers/spi/spi-dw.h index 66ef35dd8b6e..b11fc873c3a7 100644 --- a/drivers/spi/spi-dw.h +++ b/drivers/spi/spi-dw.h @@ -2,6 +2,7 @@ #ifndef DW_SPI_HEADER_H #define DW_SPI_HEADER_H +#include <linux/bits.h> #include <linux/completion.h> #include <linux/debugfs.h> #include <linux/irqreturn.h> @@ -98,6 +99,9 @@ enum dw_ssi_type { SSI_NS_MICROWIRE, }; +/* DW SPI capabilities */ +#define DW_SPI_CAP_CS_OVERRIDE BIT(0) + struct dw_spi; struct dw_spi_dma_ops { int (*dma_init)(struct device *dev, struct dw_spi *dws); @@ -118,7 +122,8 @@ struct dw_spi { u32 fifo_len; /* depth of the FIFO buffer */ u32 max_freq; /* max bus freq supported */ - int cs_override; + u32 caps; /* DW SPI capabilities */ + u32 reg_io_width; /* DR I/O width in bytes */ u16 bus_num; u16 num_cs; /* supported slave numbers */ |