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dma.h

/*
 * Copyright 2004-2009 Freescale Semiconductor, Inc. All Rights Reserved.
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 as
 * published by the Free Software Foundation.
 */

#ifndef __ASM_ARCH_MXC_DMA_H__
#define __ASM_ARCH_MXC_DMA_H__

#include <linux/scatterlist.h>
#include <linux/device.h>
#include <linux/dmaengine.h>

/*
 * This enumerates peripheral types. Used for SDMA.
 */
enum sdma_peripheral_type {
      IMX_DMATYPE_SSI,  /* MCU domain SSI */
      IMX_DMATYPE_SSI_SP,     /* Shared SSI */
      IMX_DMATYPE_MMC,  /* MMC */
      IMX_DMATYPE_SDHC, /* SDHC */
      IMX_DMATYPE_UART, /* MCU domain UART */
      IMX_DMATYPE_UART_SP,    /* Shared UART */
      IMX_DMATYPE_FIRI, /* FIRI */
      IMX_DMATYPE_CSPI, /* MCU domain CSPI */
      IMX_DMATYPE_CSPI_SP,    /* Shared CSPI */
      IMX_DMATYPE_SIM,  /* SIM */
      IMX_DMATYPE_ATA,  /* ATA */
      IMX_DMATYPE_CCM,  /* CCM */
      IMX_DMATYPE_EXT,  /* External peripheral */
      IMX_DMATYPE_MSHC, /* Memory Stick Host Controller */
      IMX_DMATYPE_MSHC_SP,    /* Shared Memory Stick Host Controller */
      IMX_DMATYPE_DSP,  /* DSP */
      IMX_DMATYPE_MEMORY,     /* Memory */
      IMX_DMATYPE_FIFO_MEMORY,/* FIFO type Memory */
      IMX_DMATYPE_SPDIF,      /* SPDIF */
      IMX_DMATYPE_IPU_MEMORY, /* IPU Memory */
      IMX_DMATYPE_ASRC, /* ASRC */
      IMX_DMATYPE_ESAI, /* ESAI */
};

enum imx_dma_prio {
      DMA_PRIO_HIGH = 0,
      DMA_PRIO_MEDIUM = 1,
      DMA_PRIO_LOW = 2
};

00050 struct imx_dma_data {
      int dma_request; /* DMA request line */
      enum sdma_peripheral_type peripheral_type;
      int priority;
};

static inline int imx_dma_is_ipu(struct dma_chan *chan)
{
      return !strcmp(dev_name(chan->device->dev), "ipu-core");
}

static inline int imx_dma_is_general_purpose(struct dma_chan *chan)
{
      return !strcmp(dev_name(chan->device->dev), "imx-sdma") ||
            !strcmp(dev_name(chan->device->dev), "imx-dma");
}

#endif

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