Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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kernel
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linux
1/*
2 * Copyright 2004-2009 Freescale Semiconductor, Inc. All Rights Reserved.
3 *
4 * This program is free software; you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License version 2 as
6 * published by the Free Software Foundation.
7 */
8
9#ifndef __ASM_ARCH_MXC_DMA_H__
10#define __ASM_ARCH_MXC_DMA_H__
11
12#include <linux/scatterlist.h>
13#include <linux/device.h>
14#include <linux/dmaengine.h>
15
16/*
17 * This enumerates peripheral types. Used for SDMA.
18 */
19enum sdma_peripheral_type {
20 IMX_DMATYPE_SSI, /* MCU domain SSI */
21 IMX_DMATYPE_SSI_SP, /* Shared SSI */
22 IMX_DMATYPE_MMC, /* MMC */
23 IMX_DMATYPE_SDHC, /* SDHC */
24 IMX_DMATYPE_UART, /* MCU domain UART */
25 IMX_DMATYPE_UART_SP, /* Shared UART */
26 IMX_DMATYPE_FIRI, /* FIRI */
27 IMX_DMATYPE_CSPI, /* MCU domain CSPI */
28 IMX_DMATYPE_CSPI_SP, /* Shared CSPI */
29 IMX_DMATYPE_SIM, /* SIM */
30 IMX_DMATYPE_ATA, /* ATA */
31 IMX_DMATYPE_CCM, /* CCM */
32 IMX_DMATYPE_EXT, /* External peripheral */
33 IMX_DMATYPE_MSHC, /* Memory Stick Host Controller */
34 IMX_DMATYPE_MSHC_SP, /* Shared Memory Stick Host Controller */
35 IMX_DMATYPE_DSP, /* DSP */
36 IMX_DMATYPE_MEMORY, /* Memory */
37 IMX_DMATYPE_FIFO_MEMORY,/* FIFO type Memory */
38 IMX_DMATYPE_SPDIF, /* SPDIF */
39 IMX_DMATYPE_IPU_MEMORY, /* IPU Memory */
40 IMX_DMATYPE_ASRC, /* ASRC */
41 IMX_DMATYPE_ESAI, /* ESAI */
42};
43
44enum imx_dma_prio {
45 DMA_PRIO_HIGH = 0,
46 DMA_PRIO_MEDIUM = 1,
47 DMA_PRIO_LOW = 2
48};
49
50struct imx_dma_data {
51 int dma_request; /* DMA request line */
52 enum sdma_peripheral_type peripheral_type;
53 int priority;
54};
55
56static inline int imx_dma_is_ipu(struct dma_chan *chan)
57{
58 return !strcmp(dev_name(chan->device->dev), "ipu-core");
59}
60
61static inline int imx_dma_is_general_purpose(struct dma_chan *chan)
62{
63 return strstr(dev_name(chan->device->dev), "sdma") ||
64 !strcmp(dev_name(chan->device->dev), "imx1-dma") ||
65 !strcmp(dev_name(chan->device->dev), "imx21-dma") ||
66 !strcmp(dev_name(chan->device->dev), "imx27-dma");
67}
68
69#endif