diff options
Diffstat (limited to 'include/asm-arm/arch-imx/imx-dma.h')
| -rw-r--r-- | include/asm-arm/arch-imx/imx-dma.h | 94 |
1 files changed, 0 insertions, 94 deletions
diff --git a/include/asm-arm/arch-imx/imx-dma.h b/include/asm-arm/arch-imx/imx-dma.h deleted file mode 100644 index 44d89c35539..00000000000 --- a/include/asm-arm/arch-imx/imx-dma.h +++ /dev/null | |||
| @@ -1,94 +0,0 @@ | |||
| 1 | /* | ||
| 2 | * linux/include/asm-arm/imxads/dma.h | ||
| 3 | * | ||
| 4 | * Copyright (C) 1997,1998 Russell King | ||
| 5 | * | ||
| 6 | * This program is free software; you can redistribute it and/or modify | ||
| 7 | * it under the terms of the GNU General Public License as published by | ||
| 8 | * the Free Software Foundation; either version 2 of the License, or | ||
| 9 | * (at your option) any later version. | ||
| 10 | * | ||
| 11 | * This program is distributed in the hope that it will be useful, | ||
| 12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | ||
| 13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | ||
| 14 | * GNU General Public License for more details. | ||
| 15 | * | ||
| 16 | * You should have received a copy of the GNU General Public License | ||
| 17 | * along with this program; if not, write to the Free Software | ||
| 18 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | ||
| 19 | */ | ||
| 20 | |||
| 21 | #include <asm/dma.h> | ||
| 22 | |||
| 23 | #ifndef __ASM_ARCH_IMX_DMA_H | ||
| 24 | #define __ASM_ARCH_IMX_DMA_H | ||
| 25 | |||
| 26 | #define IMX_DMA_CHANNELS 11 | ||
| 27 | |||
| 28 | /* | ||
| 29 | * struct imx_dma_channel - i.MX specific DMA extension | ||
| 30 | * @name: name specified by DMA client | ||
| 31 | * @irq_handler: client callback for end of transfer | ||
| 32 | * @err_handler: client callback for error condition | ||
| 33 | * @data: clients context data for callbacks | ||
| 34 | * @dma_mode: direction of the transfer %DMA_MODE_READ or %DMA_MODE_WRITE | ||
| 35 | * @sg: pointer to the actual read/written chunk for scatter-gather emulation | ||
| 36 | * @sgbc: counter of processed bytes in the actual read/written chunk | ||
| 37 | * @resbytes: total residual number of bytes to transfer | ||
| 38 | * (it can be lower or same as sum of SG mapped chunk sizes) | ||
| 39 | * @sgcount: number of chunks to be read/written | ||
| 40 | * | ||
| 41 | * Structure is used for IMX DMA processing. It would be probably good | ||
| 42 | * @struct dma_struct in the future for external interfacing and use | ||
| 43 | * @struct imx_dma_channel only as extension to it. | ||
| 44 | */ | ||
| 45 | |||
| 46 | struct imx_dma_channel { | ||
| 47 | const char *name; | ||
| 48 | void (*irq_handler) (int, void *); | ||
| 49 | void (*err_handler) (int, void *, int errcode); | ||
| 50 | void *data; | ||
| 51 | dmamode_t dma_mode; | ||
| 52 | struct scatterlist *sg; | ||
| 53 | unsigned int sgbc; | ||
| 54 | unsigned int sgcount; | ||
| 55 | unsigned int resbytes; | ||
| 56 | int dma_num; | ||
| 57 | }; | ||
| 58 | |||
| 59 | extern struct imx_dma_channel imx_dma_channels[IMX_DMA_CHANNELS]; | ||
| 60 | |||
| 61 | #define IMX_DMA_ERR_BURST 1 | ||
| 62 | #define IMX_DMA_ERR_REQUEST 2 | ||
| 63 | #define IMX_DMA_ERR_TRANSFER 4 | ||
| 64 | #define IMX_DMA_ERR_BUFFER 8 | ||
| 65 | |||
| 66 | /* The type to distinguish channel numbers parameter from ordinal int type */ | ||
| 67 | typedef int imx_dmach_t; | ||
| 68 | |||
| 69 | int | ||
| 70 | imx_dma_setup_single(imx_dmach_t dma_ch, dma_addr_t dma_address, | ||
| 71 | unsigned int dma_length, unsigned int dev_addr, dmamode_t dmamode); | ||
| 72 | |||
| 73 | int | ||
| 74 | imx_dma_setup_sg(imx_dmach_t dma_ch, | ||
| 75 | struct scatterlist *sg, unsigned int sgcount, unsigned int dma_length, | ||
| 76 | unsigned int dev_addr, dmamode_t dmamode); | ||
| 77 | |||
| 78 | int | ||
| 79 | imx_dma_setup_handlers(imx_dmach_t dma_ch, | ||
| 80 | void (*irq_handler) (int, void *), | ||
| 81 | void (*err_handler) (int, void *, int), void *data); | ||
| 82 | |||
| 83 | void imx_dma_enable(imx_dmach_t dma_ch); | ||
| 84 | |||
| 85 | void imx_dma_disable(imx_dmach_t dma_ch); | ||
| 86 | |||
| 87 | int imx_dma_request(imx_dmach_t dma_ch, const char *name); | ||
| 88 | |||
| 89 | void imx_dma_free(imx_dmach_t dma_ch); | ||
| 90 | |||
| 91 | imx_dmach_t imx_dma_request_by_prio(const char *name, imx_dma_prio prio); | ||
| 92 | |||
| 93 | |||
| 94 | #endif /* _ASM_ARCH_IMX_DMA_H */ | ||
