| 1 | /* |
| 2 | * Copyright (C) 2010, Lars-Peter Clausen <lars@metafoo.de> |
| 3 | * JZ7420/JZ4740 DMA definitions |
| 4 | * |
| 5 | * This program is free software; you can redistribute it and/or modify it |
| 6 | * under the terms of the GNU General Public License as published by the |
| 7 | * Free Software Foundation; either version 2 of the License, or (at your |
| 8 | * option) any later version. |
| 9 | * |
| 10 | * You should have received a copy of the GNU General Public License along |
| 11 | * with this program; if not, write to the Free Software Foundation, Inc., |
| 12 | * 675 Mass Ave, Cambridge, MA 02139, USA. |
| 13 | * |
| 14 | */ |
| 15 | |
| 16 | #ifndef __ASM_MACH_JZ4740_DMA_H__ |
| 17 | #define __ASM_MACH_JZ4740_DMA_H__ |
| 18 | |
| 19 | struct jz4740_dma_chan; |
| 20 | |
| 21 | enum jz4740_dma_request_type { |
| 22 | JZ4740_DMA_TYPE_AUTO_REQUEST = 8, |
| 23 | JZ4740_DMA_TYPE_UART_TRANSMIT = 20, |
| 24 | JZ4740_DMA_TYPE_UART_RECEIVE = 21, |
| 25 | JZ4740_DMA_TYPE_SPI_TRANSMIT = 22, |
| 26 | JZ4740_DMA_TYPE_SPI_RECEIVE = 23, |
| 27 | JZ4740_DMA_TYPE_AIC_TRANSMIT = 24, |
| 28 | JZ4740_DMA_TYPE_AIC_RECEIVE = 25, |
| 29 | JZ4740_DMA_TYPE_MMC_TRANSMIT = 26, |
| 30 | JZ4740_DMA_TYPE_MMC_RECEIVE = 27, |
| 31 | JZ4740_DMA_TYPE_TCU = 28, |
| 32 | JZ4740_DMA_TYPE_SADC = 29, |
| 33 | JZ4740_DMA_TYPE_SLCD = 30, |
| 34 | }; |
| 35 | |
| 36 | enum jz4740_dma_width { |
| 37 | JZ4740_DMA_WIDTH_8BIT, |
| 38 | JZ4740_DMA_WIDTH_16BIT, |
| 39 | JZ4740_DMA_WIDTH_32BIT, |
| 40 | }; |
| 41 | |
| 42 | enum jz4740_dma_transfer_size { |
| 43 | JZ4740_DMA_TRANSFER_SIZE_4BYTE = 0, |
| 44 | JZ4740_DMA_TRANSFER_SIZE_1BYTE = 1, |
| 45 | JZ4740_DMA_TRANSFER_SIZE_2BYTE = 2, |
| 46 | JZ4740_DMA_TRANSFER_SIZE_16BYTE = 3, |
| 47 | JZ4740_DMA_TRANSFER_SIZE_32BYTE = 4, |
| 48 | }; |
| 49 | |
| 50 | enum jz4740_dma_flags { |
| 51 | JZ4740_DMA_SRC_AUTOINC = 0x2, |
| 52 | JZ4740_DMA_DST_AUTOINC = 0x1, |
| 53 | }; |
| 54 | |
| 55 | enum jz4740_dma_mode { |
| 56 | JZ4740_DMA_MODE_SINGLE = 0, |
| 57 | JZ4740_DMA_MODE_BLOCK = 1, |
| 58 | }; |
| 59 | |
| 60 | struct jz4740_dma_config { |
| 61 | enum jz4740_dma_width src_width; |
| 62 | enum jz4740_dma_width dst_width; |
| 63 | enum jz4740_dma_transfer_size transfer_size; |
| 64 | enum jz4740_dma_request_type request_type; |
| 65 | enum jz4740_dma_flags flags; |
| 66 | enum jz4740_dma_mode mode; |
| 67 | }; |
| 68 | |
| 69 | typedef void (*jz4740_dma_complete_callback_t)(struct jz4740_dma_chan *, int , void *); |
| 70 | |
| 71 | struct jz4740_dma_chan* jz4740_dma_request(void *dev, const char *name); |
| 72 | void jz4740_dma_free(struct jz4740_dma_chan *dma); |
| 73 | |
| 74 | void jz4740_dma_configure(struct jz4740_dma_chan *dma, |
| 75 | const struct jz4740_dma_config *config); |
| 76 | |
| 77 | |
| 78 | void jz4740_dma_enable(struct jz4740_dma_chan *dma); |
| 79 | void jz4740_dma_disable(struct jz4740_dma_chan *dma); |
| 80 | |
| 81 | void jz4740_dma_set_src_addr(struct jz4740_dma_chan *dma, dma_addr_t src); |
| 82 | void jz4740_dma_set_dst_addr(struct jz4740_dma_chan *dma, dma_addr_t dst); |
| 83 | void jz4740_dma_set_transfer_count(struct jz4740_dma_chan *dma, uint32_t count); |
| 84 | |
| 85 | uint32_t jz4740_dma_get_residue(const struct jz4740_dma_chan *dma); |
| 86 | |
| 87 | void jz4740_dma_set_complete_cb(struct jz4740_dma_chan *dma, |
| 88 | jz4740_dma_complete_callback_t cb); |
| 89 | |
| 90 | #endif /* __ASM_JZ4740_DMA_H__ */ |
| 91 | |
