diff options
Diffstat (limited to 'arch/arm/plat-pxa/include/plat/dma.h')
-rw-r--r-- | arch/arm/plat-pxa/include/plat/dma.h | 100 |
1 files changed, 0 insertions, 100 deletions
diff --git a/arch/arm/plat-pxa/include/plat/dma.h b/arch/arm/plat-pxa/include/plat/dma.h deleted file mode 100644 index ceba3e4184fc..000000000000 --- a/arch/arm/plat-pxa/include/plat/dma.h +++ /dev/null @@ -1,100 +0,0 @@ -#ifndef __PLAT_DMA_H -#define __PLAT_DMA_H - -#define DMAC_REG(x) (*((volatile u32 *)(DMAC_REGS_VIRT + (x)))) - -#define DCSR(n) DMAC_REG((n) << 2) -#define DALGN DMAC_REG(0x00a0) /* DMA Alignment Register */ -#define DINT DMAC_REG(0x00f0) /* DMA Interrupt Register */ -#define DDADR(n) DMAC_REG(0x0200 + ((n) << 4)) -#define DSADR(n) DMAC_REG(0x0204 + ((n) << 4)) -#define DTADR(n) DMAC_REG(0x0208 + ((n) << 4)) -#define DCMD(n) DMAC_REG(0x020c + ((n) << 4)) -#define DRCMR(n) DMAC_REG((((n) < 64) ? 0x0100 : 0x1100) + \ - (((n) & 0x3f) << 2)) - -#define DCSR_RUN (1 << 31) /* Run Bit (read / write) */ -#define DCSR_NODESC (1 << 30) /* No-Descriptor Fetch (read / write) */ -#define DCSR_STOPIRQEN (1 << 29) /* Stop Interrupt Enable (read / write) */ -#define DCSR_REQPEND (1 << 8) /* Request Pending (read-only) */ -#define DCSR_STOPSTATE (1 << 3) /* Stop State (read-only) */ -#define DCSR_ENDINTR (1 << 2) /* End Interrupt (read / write) */ -#define DCSR_STARTINTR (1 << 1) /* Start Interrupt (read / write) */ -#define DCSR_BUSERR (1 << 0) /* Bus Error Interrupt (read / write) */ - -#define DCSR_EORIRQEN (1 << 28) /* End of Receive Interrupt Enable (R/W) */ -#define DCSR_EORJMPEN (1 << 27) /* Jump to next descriptor on EOR */ -#define DCSR_EORSTOPEN (1 << 26) /* STOP on an EOR */ -#define DCSR_SETCMPST (1 << 25) /* Set Descriptor Compare Status */ -#define DCSR_CLRCMPST (1 << 24) /* Clear Descriptor Compare Status */ -#define DCSR_CMPST (1 << 10) /* The Descriptor Compare Status */ -#define DCSR_EORINTR (1 << 9) /* The end of Receive */ - -#define DRCMR_MAPVLD (1 << 7) /* Map Valid (read / write) */ -#define DRCMR_CHLNUM 0x1f /* mask for Channel Number (read / write) */ - -#define DDADR_DESCADDR 0xfffffff0 /* Address of next descriptor (mask) */ -#define DDADR_STOP (1 << 0) /* Stop (read / write) */ - -#define DCMD_INCSRCADDR (1 << 31) /* Source Address Increment Setting. */ -#define DCMD_INCTRGADDR (1 << 30) /* Target Address Increment Setting. */ -#define DCMD_FLOWSRC (1 << 29) /* Flow Control by the source. */ -#define DCMD_FLOWTRG (1 << 28) /* Flow Control by the target. */ -#define DCMD_STARTIRQEN (1 << 22) /* Start Interrupt Enable */ -#define DCMD_ENDIRQEN (1 << 21) /* End Interrupt Enable */ -#define DCMD_ENDIAN (1 << 18) /* Device Endian-ness. */ -#define DCMD_BURST8 (1 << 16) /* 8 byte burst */ -#define DCMD_BURST16 (2 << 16) /* 16 byte burst */ -#define DCMD_BURST32 (3 << 16) /* 32 byte burst */ -#define DCMD_WIDTH1 (1 << 14) /* 1 byte width */ -#define DCMD_WIDTH2 (2 << 14) /* 2 byte width (HalfWord) */ -#define DCMD_WIDTH4 (3 << 14) /* 4 byte width (Word) */ -#define DCMD_LENGTH 0x01fff /* length mask (max = 8K - 1) */ - -/* - * Descriptor structure for PXA's DMA engine - * Note: this structure must always be aligned to a 16-byte boundary. - */ - -typedef struct pxa_dma_desc { - volatile u32 ddadr; /* Points to the next descriptor + flags */ - volatile u32 dsadr; /* DSADR value for the current transfer */ - volatile u32 dtadr; /* DTADR value for the current transfer */ - volatile u32 dcmd; /* DCMD value for the current transfer */ -} pxa_dma_desc; - -typedef enum { - DMA_PRIO_HIGH = 0, - DMA_PRIO_MEDIUM = 1, - DMA_PRIO_LOW = 2 -} pxa_dma_prio; - -/* - * DMA registration - */ - -int __init pxa_init_dma(int irq, int num_ch); - -int pxa_request_dma (char *name, - pxa_dma_prio prio, - void (*irq_handler)(int, void *), - void *data); - -void pxa_free_dma (int dma_ch); - -/* - * Cooperation with pxa_dma + dmaengine while there remains at least one pxa - * driver not converted to dmaengine. - */ -#if defined(CONFIG_PXA_DMA) -extern int pxad_toggle_reserved_channel(int legacy_channel); -#else -static inline int pxad_toggle_reserved_channel(int legacy_channel) -{ - return 0; -} -#endif - -extern void __init pxa2xx_set_dmac_info(int nb_channels, int nb_requestors); - -#endif /* __PLAT_DMA_H */ |