1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
|
/*
* 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
};
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), "imx31-sdma") ||
!strcmp(dev_name(chan->device->dev), "imx35-sdma") ||
!strcmp(dev_name(chan->device->dev), "imx-dma");
}
#endif
|
