From: Hemanth V <[email protected]> This patch updates platform files for fifo, slave support.
Cc: Grant Likely <[email protected]> Signed-off-by: Hemanth V <[email protected]> Acked-by: Tony Lindgren <[email protected]> Signed-off-by: Govindraj.R <[email protected]> --- arch/arm/mach-omap2/devices.c | 5 +++++ arch/arm/plat-omap/include/plat/mcspi.h | 29 ++++++++++++++++++++++++++++- 2 files changed, 33 insertions(+), 1 deletions(-) diff --git a/arch/arm/mach-omap2/devices.c b/arch/arm/mach-omap2/devices.c index 2dbb265..fa99da1 100644 --- a/arch/arm/mach-omap2/devices.c +++ b/arch/arm/mach-omap2/devices.c @@ -251,6 +251,7 @@ static inline void omap_init_sti(void) {} static struct omap2_mcspi_platform_config omap2_mcspi1_config = { .num_cs = 4, + .force_cs_mode = 1, }; static struct resource omap2_mcspi1_resources[] = { @@ -273,6 +274,10 @@ static struct platform_device omap2_mcspi1 = { static struct omap2_mcspi_platform_config omap2_mcspi2_config = { .num_cs = 2, + .mode = OMAP2_MCSPI_MASTER, + .dma_mode = 0, + .force_cs_mode = 0, + .fifo_depth = 0, }; static struct resource omap2_mcspi2_resources[] = { diff --git a/arch/arm/plat-omap/include/plat/mcspi.h b/arch/arm/plat-omap/include/plat/mcspi.h index 1254e49..23b928b 100644 --- a/arch/arm/plat-omap/include/plat/mcspi.h +++ b/arch/arm/plat-omap/include/plat/mcspi.h @@ -1,8 +1,35 @@ #ifndef _OMAP2_MCSPI_H #define _OMAP2_MCSPI_H +#define OMAP2_MCSPI_MASTER 0 +#define OMAP2_MCSPI_SLAVE 1 + +/** + * struct omap2_mcspi_platform_config - McSPI controller configuration + * @num_cs: Number of chip selects or channels supported + * @mode: SPI is master or slave + * @dma_mode: Use only DMA for data transfers + * @force_cs_mode: Use force chip select mode or auto chip select mode + * @fifo_depth: FIFO depth in bytes, max value 64 + * + * @dma_mode when set to 1 uses only dma for data transfers + * else the default behaviour is to use PIO mode for transfer + * size of 8 bytes or less. This mode is useful when mcspi + * is configured as slave + * + * @force_cs_mode when set to 1 allows continuous transfer of multiple + * spi words without toggling the chip select line. + * + * @fifo_depth when set to non zero values enables FIFO. fifo_depth + * should be set as a multiple of buffer size used for read/write. + */ + struct omap2_mcspi_platform_config { - unsigned short num_cs; + u8 num_cs; + u8 mode; + u8 dma_mode; + u8 force_cs_mode; + unsigned short fifo_depth; }; struct omap2_mcspi_device_config { -- 1.6.3.3 -- To unsubscribe from this list: send the line "unsubscribe linux-omap" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
