Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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linux
1/* SPDX-License-Identifier: GPL-2.0-only */
2/*
3 * Copyright 2004-2009 Freescale Semiconductor, Inc. All Rights Reserved.
4 */
5
6#ifndef __ASM_ARCH_MXC_DMA_H__
7#define __ASM_ARCH_MXC_DMA_H__
8
9#include <linux/scatterlist.h>
10#include <linux/device.h>
11#include <linux/dmaengine.h>
12
13/*
14 * This enumerates peripheral types. Used for SDMA.
15 */
16enum sdma_peripheral_type {
17 IMX_DMATYPE_SSI, /* MCU domain SSI */
18 IMX_DMATYPE_SSI_SP, /* Shared SSI */
19 IMX_DMATYPE_MMC, /* MMC */
20 IMX_DMATYPE_SDHC, /* SDHC */
21 IMX_DMATYPE_UART, /* MCU domain UART */
22 IMX_DMATYPE_UART_SP, /* Shared UART */
23 IMX_DMATYPE_FIRI, /* FIRI */
24 IMX_DMATYPE_CSPI, /* MCU domain CSPI */
25 IMX_DMATYPE_CSPI_SP, /* Shared CSPI */
26 IMX_DMATYPE_SIM, /* SIM */
27 IMX_DMATYPE_ATA, /* ATA */
28 IMX_DMATYPE_CCM, /* CCM */
29 IMX_DMATYPE_EXT, /* External peripheral */
30 IMX_DMATYPE_MSHC, /* Memory Stick Host Controller */
31 IMX_DMATYPE_MSHC_SP, /* Shared Memory Stick Host Controller */
32 IMX_DMATYPE_DSP, /* DSP */
33 IMX_DMATYPE_MEMORY, /* Memory */
34 IMX_DMATYPE_FIFO_MEMORY,/* FIFO type Memory */
35 IMX_DMATYPE_SPDIF, /* SPDIF */
36 IMX_DMATYPE_IPU_MEMORY, /* IPU Memory */
37 IMX_DMATYPE_ASRC, /* ASRC */
38 IMX_DMATYPE_ESAI, /* ESAI */
39 IMX_DMATYPE_SSI_DUAL, /* SSI Dual FIFO */
40 IMX_DMATYPE_ASRC_SP, /* Shared ASRC */
41 IMX_DMATYPE_SAI, /* SAI */
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 int dma_request2; /* secondary DMA request line */
53 enum sdma_peripheral_type peripheral_type;
54 int priority;
55};
56
57static inline int imx_dma_is_ipu(struct dma_chan *chan)
58{
59 return !strcmp(dev_name(chan->device->dev), "ipu-core");
60}
61
62static inline int imx_dma_is_general_purpose(struct dma_chan *chan)
63{
64 return !strcmp(chan->device->dev->driver->name, "imx-sdma") ||
65 !strcmp(chan->device->dev->driver->name, "imx-dma");
66}
67
68#endif