diff options
Diffstat (limited to 'arch/arm/mach-imx/include/mach/imx-dma.h')
| -rw-r--r-- | arch/arm/mach-imx/include/mach/imx-dma.h | 98 |
1 files changed, 0 insertions, 98 deletions
diff --git a/arch/arm/mach-imx/include/mach/imx-dma.h b/arch/arm/mach-imx/include/mach/imx-dma.h deleted file mode 100644 index bbe54df7f0d..00000000000 --- a/arch/arm/mach-imx/include/mach/imx-dma.h +++ /dev/null @@ -1,98 +0,0 @@ -/* - * linux/include/asm-arm/imxads/dma.h - * - * Copyright (C) 1997,1998 Russell King - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA - */ - -#include <mach/dma.h> - -#ifndef __ASM_ARCH_IMX_DMA_H -#define __ASM_ARCH_IMX_DMA_H - -#define IMX_DMA_CHANNELS 11 - -/* - * struct imx_dma_channel - i.MX specific DMA extension - * @name: name specified by DMA client - * @irq_handler: client callback for end of transfer - * @err_handler: client callback for error condition - * @data: clients context data for callbacks - * @dma_mode: direction of the transfer %DMA_MODE_READ or %DMA_MODE_WRITE - * @sg: pointer to the actual read/written chunk for scatter-gather emulation - * @sgbc: counter of processed bytes in the actual read/written chunk - * @resbytes: total residual number of bytes to transfer - * (it can be lower or same as sum of SG mapped chunk sizes) - * @sgcount: number of chunks to be read/written - * - * Structure is used for IMX DMA processing. It would be probably good - * @struct dma_struct in the future for external interfacing and use - * @struct imx_dma_channel only as extension to it. - */ - -struct imx_dma_channel { - const char *name; - void (*irq_handler) (int, void *); - void (*err_handler) (int, void *, int errcode); - void *data; - unsigned int dma_mode; - struct scatterlist *sg; - unsigned int sgbc; - unsigned int sgcount; - unsigned int resbytes; - int dma_num; -}; - -extern struct imx_dma_channel imx_dma_channels[IMX_DMA_CHANNELS]; - -#define IMX_DMA_ERR_BURST 1 -#define IMX_DMA_ERR_REQUEST 2 -#define IMX_DMA_ERR_TRANSFER 4 -#define IMX_DMA_ERR_BUFFER 8 - -/* The type to distinguish channel numbers parameter from ordinal int type */ -typedef int imx_dmach_t; - -#define DMA_MODE_READ 0 -#define DMA_MODE_WRITE 1 -#define DMA_MODE_MASK 1 - -int -imx_dma_setup_single(imx_dmach_t dma_ch, dma_addr_t dma_address, - unsigned int dma_length, unsigned int dev_addr, unsigned int dmamode); - -int -imx_dma_setup_sg(imx_dmach_t dma_ch, - struct scatterlist *sg, unsigned int sgcount, unsigned int dma_length, - unsigned int dev_addr, unsigned int dmamode); - -int -imx_dma_setup_handlers(imx_dmach_t dma_ch, - void (*irq_handler) (int, void *), - void (*err_handler) (int, void *, int), void *data); - -void imx_dma_enable(imx_dmach_t dma_ch); - -void imx_dma_disable(imx_dmach_t dma_ch); - -int imx_dma_request(imx_dmach_t dma_ch, const char *name); - -void imx_dma_free(imx_dmach_t dma_ch); - -imx_dmach_t imx_dma_request_by_prio(const char *name, imx_dma_prio prio); - - -#endif /* _ASM_ARCH_IMX_DMA_H */ |