From: Roy Spliet Date: Tue, 26 May 2015 15:00:40 +0000 (+0200) Subject: sunxi: Add DMA definitions X-Git-Url: http://git.lede-project.org./?a=commitdiff_plain;h=a19e735d3cbf8fb50a69e911d107635be858c84f;p=project%2Fbcm63xx%2Fu-boot.git sunxi: Add DMA definitions Signed-off-by: Roy Spliet Reviewed-by: Hans de Goede Signed-off-by: Hans de Goede --- diff --git a/arch/arm/include/asm/arch-sunxi/dma.h b/arch/arm/include/asm/arch-sunxi/dma.h new file mode 100644 index 0000000000..e54a2ba5eb --- /dev/null +++ b/arch/arm/include/asm/arch-sunxi/dma.h @@ -0,0 +1,16 @@ +/* + * (C) Copyright 2015 Roy Spliet + * + * SPDX-License-Identifier: GPL-2.0+ + */ + +#ifndef _SUNXI_DMA_H +#define _SUNXI_DMA_H + +#if defined(CONFIG_MACH_SUN4I) || defined(CONFIG_MACH_SUN5I) || defined(CONFIG_MACH_SUN7I) +#include +#else +#error "DMA definition not available for this architecture" +#endif + +#endif /* _SUNXI_DMA_H */ diff --git a/arch/arm/include/asm/arch-sunxi/dma_sun4i.h b/arch/arm/include/asm/arch-sunxi/dma_sun4i.h new file mode 100644 index 0000000000..778a04bf9e --- /dev/null +++ b/arch/arm/include/asm/arch-sunxi/dma_sun4i.h @@ -0,0 +1,68 @@ +/* + * (C) Copyright 2015 Roy Spliet + * + * SPDX-License-Identifier: GPL-2.0+ + */ + +#ifndef _SUNXI_DMA_SUN4I_H +#define _SUNXI_DMA_SUN4I_H + +struct sunxi_dma_cfg +{ + u32 ctl; /* 0x00 Control */ + u32 src_addr; /* 0x04 Source address */ + u32 dst_addr; /* 0x08 Destination address */ + u32 bc; /* 0x0C Byte counter */ + u32 res0[2]; + u32 ddma_para; /* 0x18 extra parameter (dedicated DMA only) */ + u32 res1; +}; + +struct sunxi_dma +{ + u32 irq_en; /* 0x000 IRQ enable */ + u32 irq_pend; /* 0x004 IRQ pending */ + u32 auto_gate; /* 0x008 auto gating */ + u32 res0[61]; + struct sunxi_dma_cfg ndma[8]; /* 0x100 Normal DMA */ + u32 res1[64]; + struct sunxi_dma_cfg ddma[8]; /* 0x300 Dedicated DMA */ +}; + +enum ddma_drq_type { + DDMA_DST_DRQ_SRAM = 0, + DDMA_SRC_DRQ_SRAM = 0, + DDMA_DST_DRQ_SDRAM = 1, + DDMA_SRC_DRQ_SDRAM = 1, + DDMA_DST_DRQ_PATA = 2, + DDMA_SRC_DRQ_PATA = 2, + DDMA_DST_DRQ_NAND = 3, + DDMA_SRC_DRQ_NAND = 3, + DDMA_DST_DRQ_USB0 = 4, + DDMA_SRC_DRQ_USB0 = 4, + DDMA_DST_DRQ_ETHERNET_MAC_TX = 6, + DDMA_SRC_DRQ_ETHERNET_MAC_RX = 7, + DDMA_DST_DRQ_SPI1_TX = 8, + DDMA_SRC_DRQ_SPI1_RX = 9, + DDMA_DST_DRQ_SECURITY_SYS_TX = 10, + DDMA_SRC_DRQ_SECURITY_SYS_RX = 11, + DDMA_DST_DRQ_TCON0 = 14, + DDMA_DST_DRQ_TCON1 = 15, + DDMA_DST_DRQ_MSC = 23, + DDMA_SRC_DRQ_MSC = 23, + DDMA_DST_DRQ_SPI0_TX = 26, + DDMA_SRC_DRQ_SPI0_RX = 27, + DDMA_DST_DRQ_SPI2_TX = 28, + DDMA_SRC_DRQ_SPI2_RX = 29, + DDMA_DST_DRQ_SPI3_TX = 30, + DDMA_SRC_DRQ_SPI3_RX = 31, +}; + +#define SUNXI_DMA_CTL_SRC_DRQ(a) ((a) & 0x1f) +#define SUNXI_DMA_CTL_MODE_IO (1 << 5) +#define SUNXI_DMA_CTL_SRC_DATA_WIDTH_32 (2 << 9) +#define SUNXI_DMA_CTL_DST_DRQ(a) (((a) & 0x1f) << 16) +#define SUNXI_DMA_CTL_DST_DATA_WIDTH_32 (2 << 25) +#define SUNXI_DMA_CTL_TRIGGER (1 << 31) + +#endif /* _SUNXI_DMA_SUN4I_H */