| Sascha Hauer | 1ec1e82 | 2010-09-30 13:56:34 +0000 | [diff] [blame] | 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 | }; |
| 43 | |
| 44 | enum imx_dma_prio { |
| 45 | DMA_PRIO_HIGH = 0, |
| 46 | DMA_PRIO_MEDIUM = 1, |
| 47 | DMA_PRIO_LOW = 2 |
| 48 | }; |
| 49 | |
| 50 | struct imx_dma_data { |
| 51 | int dma_request; /* DMA request line */ |
| 52 | enum sdma_peripheral_type peripheral_type; |
| 53 | int priority; |
| 54 | }; |
| 55 | |
| 56 | static inline int imx_dma_is_ipu(struct dma_chan *chan) |
| 57 | { |
| 58 | return !strcmp(dev_name(chan->device->dev), "ipu-core"); |
| 59 | } |
| 60 | |
| 61 | static inline int imx_dma_is_general_purpose(struct dma_chan *chan) |
| 62 | { |
| Richard Zhao | 8985735 | 2012-02-02 10:12:00 +0800 | [diff] [blame] | 63 | return strstr(dev_name(chan->device->dev), "sdma") || |
| Sascha Hauer | 1ec1e82 | 2010-09-30 13:56:34 +0000 | [diff] [blame] | 64 | !strcmp(dev_name(chan->device->dev), "imx-dma"); |
| 65 | } |
| 66 | |
| 67 | #endif |