diff options
Diffstat (limited to 'include/asm-arm/arch-s3c2410/dma.h')
| -rw-r--r-- | include/asm-arm/arch-s3c2410/dma.h | 66 |
1 files changed, 66 insertions, 0 deletions
diff --git a/include/asm-arm/arch-s3c2410/dma.h b/include/asm-arm/arch-s3c2410/dma.h index 3661e465b0a5..7ac224836971 100644 --- a/include/asm-arm/arch-s3c2410/dma.h +++ b/include/asm-arm/arch-s3c2410/dma.h @@ -23,6 +23,39 @@ #define MAX_DMA_ADDRESS 0x40000000 #define MAX_DMA_TRANSFER_SIZE 0x100000 /* Data Unit is half word */ +/* We use `virtual` dma channels to hide the fact we have only a limited + * number of DMA channels, and not of all of them (dependant on the device) + * can be attached to any DMA source. We therefore let the DMA core handle + * the allocation of hardware channels to clients. +*/ + +enum dma_ch { + DMACH_XD0, + DMACH_XD1, + DMACH_SDI, + DMACH_SPI0, + DMACH_SPI1, + DMACH_UART0, + DMACH_UART1, + DMACH_UART2, + DMACH_TIMER, + DMACH_I2S_IN, + DMACH_I2S_OUT, + DMACH_PCM_IN, + DMACH_PCM_OUT, + DMACH_MIC_IN, + DMACH_USB_EP1, + DMACH_USB_EP2, + DMACH_USB_EP3, + DMACH_USB_EP4, + DMACH_UART0_SRC2, /* s3c2412 second uart sources */ + DMACH_UART1_SRC2, + DMACH_UART2_SRC2, + DMACH_MAX, /* the end entry */ +}; + +#define DMACH_LOW_LEVEL (1<<28) /* use this to specifiy hardware ch no */ + /* we have 4 dma channels */ #define S3C2410_DMA_CHANNELS (4) @@ -149,6 +182,8 @@ struct s3c2410_dma_stats { unsigned long timeout_failed; }; +struct s3c2410_dma_map; + /* struct s3c2410_dma_chan * * full state information for each DMA channel @@ -174,6 +209,8 @@ struct s3c2410_dma_chan { unsigned long load_timeout; unsigned int flags; /* channel flags */ + struct s3c24xx_dma_map *map; /* channel hw maps */ + /* channel's hardware position and configuration */ void __iomem *regs; /* channels registers */ void __iomem *addr_reg; /* data address register */ @@ -283,6 +320,7 @@ extern int s3c2410_dma_set_buffdone_fn(dmach_t, s3c2410_dma_cbfn_t rtn); #define S3C2410_DMA_DCSRC (0x18) #define S3C2410_DMA_DCDST (0x1C) #define S3C2410_DMA_DMASKTRIG (0x20) +#define S3C2412_DMA_DMAREQSEL (0x24) #define S3C2410_DISRCC_INC (1<<0) #define S3C2410_DISRCC_APB (1<<1) @@ -349,4 +387,32 @@ extern int s3c2410_dma_set_buffdone_fn(dmach_t, s3c2410_dma_cbfn_t rtn); #define S3C2440_DCON_CH3_PCMOUT (6<<24) #endif +#ifdef CONFIG_CPU_S3C2412 + +#define S3C2412_DMAREQSEL_SRC(x) ((x)<<1) + +#define S3C2412_DMAREQSEL_HW (1) + +#define S3C2412_DMAREQSEL_SPI0TX S3C2412_DMAREQSEL_SRC(0) +#define S3C2412_DMAREQSEL_SPI0RX S3C2412_DMAREQSEL_SRC(1) +#define S3C2412_DMAREQSEL_SPI1TX S3C2412_DMAREQSEL_SRC(2) +#define S3C2412_DMAREQSEL_SPI1RX S3C2412_DMAREQSEL_SRC(3) +#define S3C2412_DMAREQSEL_I2STX S3C2412_DMAREQSEL_SRC(4) +#define S3C2412_DMAREQSEL_I2SRX S3C2412_DMAREQSEL_SRC(5) +#define S3C2412_DMAREQSEL_TIMER S3C2412_DMAREQSEL_SRC(9) +#define S3C2412_DMAREQSEL_SDI S3C2412_DMAREQSEL_SRC(10) +#define S3C2412_DMAREQSEL_USBEP1 S3C2412_DMAREQSEL_SRC(13) +#define S3C2412_DMAREQSEL_USBEP2 S3C2412_DMAREQSEL_SRC(14) +#define S3C2412_DMAREQSEL_USBEP3 S3C2412_DMAREQSEL_SRC(15) +#define S3C2412_DMAREQSEL_USBEP4 S3C2412_DMAREQSEL_SRC(16) +#define S3C2412_DMAREQSEL_XDREQ0 S3C2412_DMAREQSEL_SRC(17) +#define S3C2412_DMAREQSEL_XDREQ1 S3C2412_DMAREQSEL_SRC(18) +#define S3C2412_DMAREQSEL_UART0_0 S3C2412_DMAREQSEL_SRC(19) +#define S3C2412_DMAREQSEL_UART0_1 S3C2412_DMAREQSEL_SRC(20) +#define S3C2412_DMAREQSEL_UART1_0 S3C2412_DMAREQSEL_SRC(21) +#define S3C2412_DMAREQSEL_UART1_1 S3C2412_DMAREQSEL_SRC(22) +#define S3C2412_DMAREQSEL_UART2_0 S3C2412_DMAREQSEL_SRC(23) +#define S3C2412_DMAREQSEL_UART2_1 S3C2412_DMAREQSEL_SRC(24) + +#endif #endif /* __ASM_ARCH_DMA_H */ |