From 849369d6c66d3054688672f97d31fceb8e8230fb Mon Sep 17 00:00:00 2001 From: root Date: Fri, 25 Dec 2015 04:40:36 +0000 Subject: initial_commit --- arch/arm/plat-mxc/include/mach/dma.h | 106 +++++++++++++++++++++++++++++++++++ 1 file changed, 106 insertions(+) create mode 100644 arch/arm/plat-mxc/include/mach/dma.h (limited to 'arch/arm/plat-mxc/include/mach/dma.h') diff --git a/arch/arm/plat-mxc/include/mach/dma.h b/arch/arm/plat-mxc/include/mach/dma.h new file mode 100644 index 00000000..af2edb84 --- /dev/null +++ b/arch/arm/plat-mxc/include/mach/dma.h @@ -0,0 +1,106 @@ +/* + * Copyright (C) 2004-2012 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 +#include +#include + +#define MXC_DMA_DYNAMIC_CHANNEL 255 + +#define MXC_DMA_DONE 0x0 +#define MXC_DMA_REQUEST_TIMEOUT 0x1 +#define MXC_DMA_TRANSFER_ERROR 0x2 + +/* + * 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 */ + IMX_DMATYPE_HDMI, +}; + +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 */ + int dma_request_p2p; + enum sdma_peripheral_type peripheral_type; + int priority; + void *private; +}; + +struct imx_pcm_dma_params { + enum sdma_peripheral_type peripheral_type; + int dma; + unsigned long dma_addr; + int burstsize; +}; + +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_pxp(struct dma_chan *chan) +{ + return !strcmp(dev_name(chan->device->dev), "imx-pxp"); +} + +static inline int imx_dma_is_general_purpose(struct dma_chan *chan) +{ + return !strcmp(dev_name(chan->device->dev), "imx-sdma") || + !strcmp(dev_name(chan->device->dev), "imx-dma"); +} + +struct mxs_dma_data { + int chan_irq; +}; + +#define MXS_DMA_F_APPEND (1 << 0) +#define MXS_DMA_F_WAIT4END (1 << 1) +static inline int mxs_dma_is_apbh(struct dma_chan *chan) +{ + return !strcmp(dev_name(chan->device->dev), "mxs-dma-apbh"); +} + +static inline int mxs_dma_is_apbx(struct dma_chan *chan) +{ + return !strcmp(dev_name(chan->device->dev), "mxs-dma-apbx"); +} + +void sdma_set_event_pending(struct dma_chan *chan); + +#endif -- cgit v1.2.3