include/asm-arm/arch-imx/dma.h

   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 #ifndef __ASM_ARCH_DMA_H
  21 #define __ASM_ARCH_DMA_H
  22
  23 #define MAX_DMA_ADDRESS         0xffffffff
  24
  25 #define MAX_DMA_CHANNELS        0
  26
  27 /*
  28  * DMA registration
  29  */
  30
  31 typedef enum {
  32         DMA_PRIO_HIGH = 0,
  33         DMA_PRIO_MEDIUM = 3,
  34         DMA_PRIO_LOW = 6
  35 } imx_dma_prio;
  36
  37 int imx_request_dma(char *name, imx_dma_prio prio,
  38                     void (*irq_handler) (int, void *, struct pt_regs *),
  39                     void (*err_handler) (int, void *, struct pt_regs *),
  40                     void *data);
  41
  42 void imx_free_dma(int dma_ch);
  43
  44
  45 #define DMA_REQ_UART3_T        2
  46 #define DMA_REQ_UART3_R        3
  47 #define DMA_REQ_SSI2_T         4
  48 #define DMA_REQ_SSI2_R         5
  49 #define DMA_REQ_CSI_STAT       6
  50 #define DMA_REQ_CSI_R          7
  51 #define DMA_REQ_MSHC           8
  52 #define DMA_REQ_DSPA_DCT_DOUT  9
  53 #define DMA_REQ_DSPA_DCT_DIN  10
  54 #define DMA_REQ_DSPA_MAC      11
  55 #define DMA_REQ_EXT           12
  56 #define DMA_REQ_SDHC          13
  57 #define DMA_REQ_SPI1_R        14
  58 #define DMA_REQ_SPI1_T        15
  59 #define DMA_REQ_SSI_T         16
  60 #define DMA_REQ_SSI_R         17
  61 #define DMA_REQ_ASP_DAC       18
  62 #define DMA_REQ_ASP_ADC       19
  63 #define DMA_REQ_USP_EP(x)    (20+(x))
  64 #define DMA_REQ_SPI2_R        26
  65 #define DMA_REQ_SPI2_T        27
  66 #define DMA_REQ_UART2_T       28
  67 #define DMA_REQ_UART2_R       29
  68 #define DMA_REQ_UART1_T       30
  69 #define DMA_REQ_UART1_R       31
  70
  71 #endif                          /* _ASM_ARCH_DMA_H */