diff options
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/arm/Kconfig | 5 | ||||
| -rw-r--r-- | arch/arm/Makefile | 1 | ||||
| -rw-r--r-- | arch/arm/mach-pxa/Makefile | 2 | ||||
| -rw-r--r-- | arch/arm/mach-pxa/include/mach/dma.h | 83 | ||||
| -rw-r--r-- | arch/arm/plat-pxa/Kconfig | 3 | ||||
| -rw-r--r-- | arch/arm/plat-pxa/Makefile | 6 | ||||
| -rw-r--r-- | arch/arm/plat-pxa/dma.c (renamed from arch/arm/mach-pxa/dma.c) | 6 | ||||
| -rw-r--r-- | arch/arm/plat-pxa/include/plat/dma.h | 85 |
8 files changed, 105 insertions, 86 deletions
diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig index 12abdd43201..5ba00358e80 100644 --- a/arch/arm/Kconfig +++ b/arch/arm/Kconfig @@ -481,6 +481,7 @@ config ARCH_PXA select GENERIC_TIME select GENERIC_CLOCKEVENTS select TICK_ONESHOT + select PLAT_PXA help Support for Intel/Marvell's PXA2xx/PXA3xx processor line. @@ -618,6 +619,7 @@ source "arch/arm/mach-loki/Kconfig" source "arch/arm/mach-mv78xx0/Kconfig" source "arch/arm/mach-pxa/Kconfig" +source "arch/arm/plat-pxa/Kconfig" source "arch/arm/mach-sa1100/Kconfig" @@ -687,6 +689,9 @@ config PLAT_IOP config PLAT_ORION bool +config PLAT_PXA + bool + source arch/arm/mm/Kconfig config IWMMXT diff --git a/arch/arm/Makefile b/arch/arm/Makefile index e7ef876e574..897f2830bc4 100644 --- a/arch/arm/Makefile +++ b/arch/arm/Makefile @@ -109,6 +109,7 @@ ifeq ($(CONFIG_ARCH_SA1100),y) textofs-$(CONFIG_SA1111) := 0x00208000 endif machine-$(CONFIG_ARCH_PXA) := pxa + plat-$(CONFIG_PLAT_PXA) := pxa machine-$(CONFIG_ARCH_L7200) := l7200 machine-$(CONFIG_ARCH_INTEGRATOR) := integrator textofs-$(CONFIG_ARCH_CLPS711X) := 0x00028000 diff --git a/arch/arm/mach-pxa/Makefile b/arch/arm/mach-pxa/Makefile index fc96e7d454b..70b46570c5c 100644 --- a/arch/arm/mach-pxa/Makefile +++ b/arch/arm/mach-pxa/Makefile @@ -3,7 +3,7 @@ # # Common support (must be linked before board specific support) -obj-y += clock.o devices.o generic.o irq.o dma.o \ +obj-y += clock.o devices.o generic.o irq.o \ time.o gpio.o reset.o obj-$(CONFIG_PM) += pm.o sleep.o standby.o diff --git a/arch/arm/mach-pxa/include/mach/dma.h b/arch/arm/mach-pxa/include/mach/dma.h index b0812f59d3f..5bd55894a48 100644 --- a/arch/arm/mach-pxa/include/mach/dma.h +++ b/arch/arm/mach-pxa/include/mach/dma.h @@ -16,87 +16,6 @@ /* DMA Controller Registers Definitions */ #define DMAC_REGS_VIRT io_p2v(0x40000000) -#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) */ - -#if defined(CONFIG_PXA27x) || defined(CONFIG_PXA3xx) -#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 */ -#endif - -#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); +#include <plat/dma.h> #endif /* _ASM_ARCH_DMA_H */ diff --git a/arch/arm/plat-pxa/Kconfig b/arch/arm/plat-pxa/Kconfig new file mode 100644 index 00000000000..b158e98038e --- /dev/null +++ b/arch/arm/plat-pxa/Kconfig @@ -0,0 +1,3 @@ +if PLAT_PXA + +endif diff --git a/arch/arm/plat-pxa/Makefile b/arch/arm/plat-pxa/Makefile new file mode 100644 index 00000000000..dcc3ceaf717 --- /dev/null +++ b/arch/arm/plat-pxa/Makefile @@ -0,0 +1,6 @@ +# +# Makefile for code common across different PXA processor families +# + +obj-y := dma.o + diff --git a/arch/arm/mach-pxa/dma.c b/arch/arm/plat-pxa/dma.c index 01217e01f7d..70aeee407f7 100644 --- a/arch/arm/mach-pxa/dma.c +++ b/arch/arm/plat-pxa/dma.c @@ -1,5 +1,5 @@ /* - * linux/arch/arm/mach-pxa/dma.c + * linux/arch/arm/plat-pxa/dma.c * * PXA DMA registration and IRQ dispatching * @@ -34,8 +34,8 @@ static struct dma_channel *dma_channels; static int num_dma_channels; int pxa_request_dma (char *name, pxa_dma_prio prio, - void (*irq_handler)(int, void *), - void *data) + void (*irq_handler)(int, void *), + void *data) { unsigned long flags; int i, found = 0; diff --git a/arch/arm/plat-pxa/include/plat/dma.h b/arch/arm/plat-pxa/include/plat/dma.h new file mode 100644 index 00000000000..a7b91dc0685 --- /dev/null +++ b/arch/arm/plat-pxa/include/plat/dma.h @@ -0,0 +1,85 @@ +#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); + +#endif /* __PLAT_DMA_H */ |