diff options
Diffstat (limited to 'arch/blackfin/mach-bf548/dma.c')
| -rw-r--r-- | arch/blackfin/mach-bf548/dma.c | 139 |
1 files changed, 139 insertions, 0 deletions
diff --git a/arch/blackfin/mach-bf548/dma.c b/arch/blackfin/mach-bf548/dma.c new file mode 100644 index 000000000..69ead33cb --- /dev/null +++ b/arch/blackfin/mach-bf548/dma.c @@ -0,0 +1,139 @@ +/* + * the simple DMA Implementation for Blackfin + * + * Copyright 2007-2009 Analog Devices Inc. + * + * Licensed under the GPL-2 or later. + */ + +#include <linux/module.h> + +#include <asm/blackfin.h> +#include <asm/dma.h> + +struct dma_register * const dma_io_base_addr[MAX_DMA_CHANNELS] = { + (struct dma_register *) DMA0_NEXT_DESC_PTR, + (struct dma_register *) DMA1_NEXT_DESC_PTR, + (struct dma_register *) DMA2_NEXT_DESC_PTR, + (struct dma_register *) DMA3_NEXT_DESC_PTR, + (struct dma_register *) DMA4_NEXT_DESC_PTR, + (struct dma_register *) DMA5_NEXT_DESC_PTR, + (struct dma_register *) DMA6_NEXT_DESC_PTR, + (struct dma_register *) DMA7_NEXT_DESC_PTR, + (struct dma_register *) DMA8_NEXT_DESC_PTR, + (struct dma_register *) DMA9_NEXT_DESC_PTR, + (struct dma_register *) DMA10_NEXT_DESC_PTR, + (struct dma_register *) DMA11_NEXT_DESC_PTR, + (struct dma_register *) DMA12_NEXT_DESC_PTR, + (struct dma_register *) DMA13_NEXT_DESC_PTR, + (struct dma_register *) DMA14_NEXT_DESC_PTR, + (struct dma_register *) DMA15_NEXT_DESC_PTR, + (struct dma_register *) DMA16_NEXT_DESC_PTR, + (struct dma_register *) DMA17_NEXT_DESC_PTR, + (struct dma_register *) DMA18_NEXT_DESC_PTR, + (struct dma_register *) DMA19_NEXT_DESC_PTR, + (struct dma_register *) DMA20_NEXT_DESC_PTR, + (struct dma_register *) DMA21_NEXT_DESC_PTR, + (struct dma_register *) DMA22_NEXT_DESC_PTR, + (struct dma_register *) DMA23_NEXT_DESC_PTR, + (struct dma_register *) MDMA_D0_NEXT_DESC_PTR, + (struct dma_register *) MDMA_S0_NEXT_DESC_PTR, + (struct dma_register *) MDMA_D1_NEXT_DESC_PTR, + (struct dma_register *) MDMA_S1_NEXT_DESC_PTR, + (struct dma_register *) MDMA_D2_NEXT_DESC_PTR, + (struct dma_register *) MDMA_S2_NEXT_DESC_PTR, + (struct dma_register *) MDMA_D3_NEXT_DESC_PTR, + (struct dma_register *) MDMA_S3_NEXT_DESC_PTR, +}; +EXPORT_SYMBOL(dma_io_base_addr); + +int channel2irq(unsigned int channel) +{ + int ret_irq = -1; + + switch (channel) { + case CH_SPORT0_RX: + ret_irq = IRQ_SPORT0_RX; + break; + case CH_SPORT0_TX: + ret_irq = IRQ_SPORT0_TX; + break; + case CH_SPORT1_RX: + ret_irq = IRQ_SPORT1_RX; + break; + case CH_SPORT1_TX: + ret_irq = IRQ_SPORT1_TX; + break; + case CH_SPI0: + ret_irq = IRQ_SPI0; + break; + case CH_SPI1: + ret_irq = IRQ_SPI1; + break; + case CH_UART0_RX: + ret_irq = IRQ_UART0_RX; + break; + case CH_UART0_TX: + ret_irq = IRQ_UART0_TX; + break; + case CH_UART1_RX: + ret_irq = IRQ_UART1_RX; + break; + case CH_UART1_TX: + ret_irq = IRQ_UART1_TX; + break; + case CH_EPPI0: + ret_irq = IRQ_EPPI0; + break; + case CH_EPPI1: + ret_irq = IRQ_EPPI1; + break; + case CH_EPPI2: + ret_irq = IRQ_EPPI2; + break; + case CH_PIXC_IMAGE: + ret_irq = IRQ_PIXC_IN0; + break; + case CH_PIXC_OVERLAY: + ret_irq = IRQ_PIXC_IN1; + break; + case CH_PIXC_OUTPUT: + ret_irq = IRQ_PIXC_OUT; + break; + case CH_SPORT2_RX: + ret_irq = IRQ_SPORT2_RX; + break; + case CH_SPORT2_TX: + ret_irq = IRQ_SPORT2_TX; + break; + case CH_SPORT3_RX: + ret_irq = IRQ_SPORT3_RX; + break; + case CH_SPORT3_TX: + ret_irq = IRQ_SPORT3_TX; + break; + case CH_SDH: + ret_irq = IRQ_SDH; + break; + case CH_SPI2: + ret_irq = IRQ_SPI2; + break; + case CH_MEM_STREAM0_SRC: + case CH_MEM_STREAM0_DEST: + ret_irq = IRQ_MDMAS0; + break; + case CH_MEM_STREAM1_SRC: + case CH_MEM_STREAM1_DEST: + ret_irq = IRQ_MDMAS1; + break; + case CH_MEM_STREAM2_SRC: + case CH_MEM_STREAM2_DEST: + ret_irq = IRQ_MDMAS2; + break; + case CH_MEM_STREAM3_SRC: + case CH_MEM_STREAM3_DEST: + ret_irq = IRQ_MDMAS3; + break; + } + return ret_irq; +} |