root/include/linux/platform_data/dma-imx.h

DEFINITIONS

1. imx_dma_is_ipu
2. imx_dma_is_general_purpose

/*
 * 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 */
        IMX_DMATYPE_SSI_DUAL,   /* SSI Dual FIFO */
        IMX_DMATYPE_ASRC_SP,    /* Shared ASRC */
};

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

struct imx_dma_data {
        int dma_request; /* DMA request line */
        int dma_request2; /* secondary 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(chan->device->dev->driver->name, "imx-sdma") ||
                !strcmp(chan->device->dev->driver->name, "imx-dma");
}

#endif