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 */
19 enum 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 IMX_DMATYPE_SSI_DUAL, /* SSI Dual FIFO */
43 IMX_DMATYPE_ASRC_SP, /* Shared ASRC */
44 IMX_DMATYPE_SAI, /* SAI */
45 };
46
47 enum imx_dma_prio {
48 DMA_PRIO_HIGH = 0,
49 DMA_PRIO_MEDIUM = 1,
50 DMA_PRIO_LOW = 2
51 };
52
53 struct imx_dma_data {
54 int dma_request; /* DMA request line */
55 int dma_request2; /* secondary DMA request line */
56 enum sdma_peripheral_type peripheral_type;
57 int priority;
58 };
59
imx_dma_is_ipu(struct dma_chan * chan)60 static inline int imx_dma_is_ipu(struct dma_chan *chan)
61 {
62 return !strcmp(dev_name(chan->device->dev), "ipu-core");
63 }
64
imx_dma_is_general_purpose(struct dma_chan * chan)65 static inline int imx_dma_is_general_purpose(struct dma_chan *chan)
66 {
67 return !strcmp(chan->device->dev->driver->name, "imx-sdma") ||
68 !strcmp(chan->device->dev->driver->name, "imx-dma");
69 }
70
71 #endif
72
