| /* SPDX-License-Identifier: GPL-2.0-only */ |
| /* |
| * Copyright 2004-2009 Freescale Semiconductor, Inc. All Rights Reserved. |
| */ |
| |
| #ifndef __LINUX_DMA_IMX_H |
| #define __LINUX_DMA_IMX_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 */ |
| IMX_DMATYPE_SSI_DUAL, /* SSI Dual FIFO */ |
| IMX_DMATYPE_ASRC_SP, /* Shared ASRC */ |
| IMX_DMATYPE_SAI, /* SAI */ |
| IMX_DMATYPE_MULTI_SAI, /* MULTI FIFOs For Audio */ |
| }; |
| |
| 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_request2; /* secondary 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(chan->device->dev->driver->name, "imx-sdma") || |
| !strcmp(chan->device->dev->driver->name, "imx-dma"); |
| } |
| |
| /** |
| * struct sdma_peripheral_config - SDMA config for audio |
| * @n_fifos_src: Number of FIFOs for recording |
| * @n_fifos_dst: Number of FIFOs for playback |
| * @sw_done: Use software done. Needed for PDM (micfil) |
| * |
| * Some i.MX Audio devices (SAI, micfil) have multiple successive FIFO |
| * registers. For multichannel recording/playback the SAI/micfil have |
| * one FIFO register per channel and the SDMA engine has to read/write |
| * the next channel from/to the next register and wrap around to the |
| * first register when all channels are handled. The number of active |
| * channels must be communicated to the SDMA engine using this struct. |
| */ |
| struct sdma_peripheral_config { |
| int n_fifos_src; |
| int n_fifos_dst; |
| bool sw_done; |
| }; |
| |
| #endif /* __LINUX_DMA_IMX_H */ |