arch/arm/mach-s3c24xx/include/mach/dma.h

   1 /* SPDX-License-Identifier: GPL-2.0 */
   2 /*
   3  * Copyright (C) 2003-2006 Simtec Electronics
   4  *      Ben Dooks <ben@simtec.co.uk>
   5  *
   6  * Samsung S3C24XX DMA support
   7  */
   8
   9 #ifndef __ASM_ARCH_DMA_H
  10 #define __ASM_ARCH_DMA_H __FILE__
  11
  12 #include <linux/device.h>
  13
  14 /* We use `virtual` dma channels to hide the fact we have only a limited
  15  * number of DMA channels, and not of all of them (dependent on the device)
  16  * can be attached to any DMA source. We therefore let the DMA core handle
  17  * the allocation of hardware channels to clients.
  18 */
  19
  20 enum dma_ch {
  21         DMACH_XD0 = 0,
  22         DMACH_XD1,
  23         DMACH_SDI,
  24         DMACH_SPI0,
  25         DMACH_SPI1,
  26         DMACH_UART0,
  27         DMACH_UART1,
  28         DMACH_UART2,
  29         DMACH_TIMER,
  30         DMACH_I2S_IN,
  31         DMACH_I2S_OUT,
  32         DMACH_PCM_IN,
  33         DMACH_PCM_OUT,
  34         DMACH_MIC_IN,
  35         DMACH_USB_EP1,
  36         DMACH_USB_EP2,
  37         DMACH_USB_EP3,
  38         DMACH_USB_EP4,
  39         DMACH_UART0_SRC2,       /* s3c2412 second uart sources */
  40         DMACH_UART1_SRC2,
  41         DMACH_UART2_SRC2,
  42         DMACH_UART3,            /* s3c2443 has extra uart */
  43         DMACH_UART3_SRC2,
  44         DMACH_SPI0_TX,          /* s3c2443/2416/2450 hsspi0 */
  45         DMACH_SPI0_RX,          /* s3c2443/2416/2450 hsspi0 */
  46         DMACH_SPI1_TX,          /* s3c2443/2450 hsspi1 */
  47         DMACH_SPI1_RX,          /* s3c2443/2450 hsspi1 */
  48         DMACH_MAX,              /* the end entry */
  49 };
  50
  51 #endif /* __ASM_ARCH_DMA_H */