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), "imx-dma");
65}
66
67#endif