From: Sandeep Paulraj <[email protected]> The patch adds support for SPI in DM365 SOC.
Signed-off-by: Sandeep Paulraj <[email protected]> --- arch/arm/mach-davinci/dm365.c | 56 ++++++++++++++++++++++++++++ arch/arm/mach-davinci/include/mach/dm365.h | 3 + 2 files changed, 59 insertions(+), 0 deletions(-) diff --git a/arch/arm/mach-davinci/dm365.c b/arch/arm/mach-davinci/dm365.c index f02bce8..d8fe0c7 100644 --- a/arch/arm/mach-davinci/dm365.c +++ b/arch/arm/mach-davinci/dm365.c @@ -19,6 +19,7 @@ #include <linux/platform_device.h> #include <linux/dma-mapping.h> #include <linux/gpio.h> +#include <linux/spi/spi.h> #include <asm/mach/map.h> @@ -32,6 +33,7 @@ #include <mach/time.h> #include <mach/serial.h> #include <mach/common.h> +#include <mach/spi.h> #include "clock.h" #include "mux.h" @@ -597,6 +599,60 @@ INT_CFG(DM365, INT_EMAC_MISCPULSE, 17, 1, 1, false) #endif }; +static u64 dm365_spi0_dma_mask = DMA_BIT_MASK(32); + +static struct davinci_spi_platform_data dm365_spi0_pdata = { + .version = SPI_VERSION_1, + .num_chipselect = 2, + .clk_internal = 1, + .cs_hold = 1, + .intr_level = 0, + .poll_mode = 1, + .c2tdelay = 8, + .t2cdelay = 8, +}; + +static struct resource dm365_spi0_resources[] = { + { + .start = 0x01c66000, + .end = 0x01c667ff, + .flags = IORESOURCE_MEM, + }, + { + .start = IRQ_DM365_SPIINT0_0, + .flags = IORESOURCE_IRQ, + }, +}; + +static struct platform_device dm365_spi0_device = { + .name = "spi_davinci", + .id = 0, + .dev = { + .dma_mask = &dm365_spi0_dma_mask, + .coherent_dma_mask = DMA_BIT_MASK(32), + .platform_data = &dm365_spi0_pdata, + }, + .num_resources = ARRAY_SIZE(dm365_spi0_resources), + .resource = dm365_spi0_resources, +}; + +void __init dm365_init_spi0(unsigned chipselect_mask, + struct spi_board_info *info, unsigned len) +{ + davinci_cfg_reg(DM365_SPI0_SCLK); + davinci_cfg_reg(DM365_SPI0_SDI); + davinci_cfg_reg(DM365_SPI0_SDO); + + /* not all slaves will be wired up */ + if (chipselect_mask & BIT(0)) + davinci_cfg_reg(DM365_SPI0_SDENA0); + if (chipselect_mask & BIT(1)) + davinci_cfg_reg(DM365_SPI0_SDENA1); + + spi_register_board_info(info, len); + + platform_device_register(&dm365_spi0_device); +} static struct emac_platform_data dm365_emac_pdata = { .ctrl_reg_offset = DM365_EMAC_CNTRL_OFFSET, .ctrl_mod_reg_offset = DM365_EMAC_CNTRL_MOD_OFFSET, diff --git a/arch/arm/mach-davinci/include/mach/dm365.h b/arch/arm/mach-davinci/include/mach/dm365.h index 09db434..61cfd30 100644 --- a/arch/arm/mach-davinci/include/mach/dm365.h +++ b/arch/arm/mach-davinci/include/mach/dm365.h @@ -25,5 +25,8 @@ #define DM365_EMAC_CNTRL_RAM_SIZE (0x2000) void __init dm365_init(void); +struct spi_board_info; +void dm365_init_spi0(unsigned chipselect_mask, + struct spi_board_info *info, unsigned len); #endif /* __ASM_ARCH_DM365_H */ -- 1.6.0.4 _______________________________________________ Davinci-linux-open-source mailing list [email protected] http://linux.davincidsp.com/mailman/listinfo/davinci-linux-open-source
