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dma.c

/*
 *  Copyright 2008-2009 Freescale Semiconductor, Inc. All Rights Reserved.
 */

/*
 * The code contained herein is licensed under the GNU General Public
 * License. You may obtain a copy of the GNU General Public License
 * Version 2 or later at the following locations:
 *
 * http://www.opensource.org/licenses/gpl-license.html
 * http://www.gnu.org/copyleft/gpl.html
 */
#include <linux/init.h>
#include <linux/device.h>
#include <asm/dma.h>
#include <mach/hardware.h>

#include "serial.h"

#define MXC_MMC_BUFFER_ACCESS     0x20
#define MXC_SDHC_MMC_WML          64
#define MXC_SDHC_SD_WML           256
#define MXC_SSI_TX0_REG           0x0
#define MXC_SSI_TX1_REG           0x4
#define MXC_SSI_RX0_REG           0x8
#define MXC_SSI_RX1_REG           0xC
#define MXC_SSI_TXFIFO_WML        0x4
#define MXC_SSI_RXFIFO_WML        0x6
#define MXC_SPDIF_TXFIFO_WML      0x8
#define MXC_SPDIF_TX_REG          0x2C

typedef struct mxc_sdma_info_entry_s {
      mxc_dma_device_t device;
      mxc_sdma_channel_params_t *chnl_info;
} mxc_sdma_info_entry_t;

static mxc_sdma_channel_params_t mxc_sdma_uart1_rx_params = {
      .chnl_params = {
                  .watermark_level = UART1_UFCR_RXTL,
                  .per_address = UART1_BASE_ADDR,
                  .peripheral_type = UART,
                  .transfer_type = per_2_emi,
                  .event_id = DMA_REQ_UART1_RX,
                  .bd_number = 32,
                  .word_size = TRANSFER_8BIT,
                  },
      .channel_num = MXC_DMA_CHANNEL_UART1_RX,
      .chnl_priority = MXC_SDMA_DEFAULT_PRIORITY,
};

static mxc_sdma_channel_params_t mxc_sdma_uart1_tx_params = {
      .chnl_params = {
                  .watermark_level = UART1_UFCR_TXTL,
                  .per_address = UART1_BASE_ADDR + MXC_UARTUTXD,
                  .peripheral_type = UART,
                  .transfer_type = emi_2_per,
                  .event_id = DMA_REQ_UART1_TX,
                  .bd_number = 32,
                  .word_size = TRANSFER_8BIT,
                  },
      .channel_num = MXC_DMA_CHANNEL_UART1_TX,
      .chnl_priority = MXC_SDMA_DEFAULT_PRIORITY,
};

static mxc_sdma_channel_params_t mxc_sdma_uart2_rx_params = {
      .chnl_params = {
                  .watermark_level = UART2_UFCR_RXTL,
                  .per_address = UART2_BASE_ADDR,
                  .peripheral_type = UART,
                  .transfer_type = per_2_emi,
                  .event_id = DMA_REQ_UART2_RX,
                  .bd_number = 32,
                  .word_size = TRANSFER_8BIT,
                  },
      .channel_num = MXC_DMA_CHANNEL_UART2_RX,
      .chnl_priority = MXC_SDMA_DEFAULT_PRIORITY,
};

static mxc_sdma_channel_params_t mxc_sdma_uart2_tx_params = {
      .chnl_params = {
                  .watermark_level = UART2_UFCR_TXTL,
                  .per_address = UART2_BASE_ADDR + MXC_UARTUTXD,
                  .peripheral_type = UART,
                  .transfer_type = emi_2_per,
                  .event_id = DMA_REQ_UART2_TX,
                  .bd_number = 32,
                  .word_size = TRANSFER_8BIT,
                  },
      .channel_num = MXC_DMA_CHANNEL_UART2_TX,
      .chnl_priority = MXC_SDMA_DEFAULT_PRIORITY,
};

static mxc_sdma_channel_params_t mxc_sdma_uart3_rx_params = {
      .chnl_params = {
                  .watermark_level = UART3_UFCR_RXTL,
                  .per_address = UART3_BASE_ADDR,
                  .peripheral_type = UART_SP,
                  .transfer_type = per_2_emi,
                  .event_id = DMA_REQ_UART3_RX,
                  .bd_number = 32,
                  .word_size = TRANSFER_8BIT,
                  },
      .channel_num = MXC_DMA_CHANNEL_UART3_RX,
      .chnl_priority = MXC_SDMA_DEFAULT_PRIORITY,
};

static mxc_sdma_channel_params_t mxc_sdma_uart3_tx_params = {
      .chnl_params = {
                  .watermark_level = UART3_UFCR_TXTL,
                  .per_address = UART3_BASE_ADDR + MXC_UARTUTXD,
                  .peripheral_type = UART_SP,
                  .transfer_type = emi_2_per,
                  .event_id = DMA_REQ_UART3_TX,
                  .bd_number = 32,
                  .word_size = TRANSFER_8BIT,
                  },
      .channel_num = MXC_DMA_CHANNEL_UART3_TX,
      .chnl_priority = MXC_SDMA_DEFAULT_PRIORITY,
};

static mxc_sdma_channel_params_t mxc_sdma_mmc1_width1_params = {
      .chnl_params = {
                  .watermark_level = MXC_SDHC_MMC_WML,
                  .per_address =
                  MMC_SDHC1_BASE_ADDR + MXC_MMC_BUFFER_ACCESS,
                  .peripheral_type = MMC,
                  .transfer_type = per_2_emi,
                  .event_id = DMA_REQ_SDHC1,
                  .bd_number = 32,
                  .word_size = TRANSFER_32BIT,
                  },
      .channel_num = MXC_DMA_CHANNEL_MMC1,
      .chnl_priority = MXC_SDMA_DEFAULT_PRIORITY,
};

static mxc_sdma_channel_params_t mxc_sdma_mmc1_width4_params = {
      .chnl_params = {
                  .watermark_level = MXC_SDHC_SD_WML,
                  .per_address =
                  MMC_SDHC1_BASE_ADDR + MXC_MMC_BUFFER_ACCESS,
                  .peripheral_type = MMC,
                  .transfer_type = per_2_emi,
                  .event_id = DMA_REQ_SDHC1,
                  .bd_number = 32,
                  .word_size = TRANSFER_32BIT,
                  },
      .channel_num = MXC_DMA_CHANNEL_MMC1,
      .chnl_priority = MXC_SDMA_DEFAULT_PRIORITY,
};

static mxc_sdma_channel_params_t mxc_sdma_mmc2_width1_params = {
      .chnl_params = {
                  .watermark_level = MXC_SDHC_MMC_WML,
                  .per_address =
                  MMC_SDHC2_BASE_ADDR + MXC_MMC_BUFFER_ACCESS,
                  .peripheral_type = MMC,
                  .transfer_type = per_2_emi,
                  .event_id = DMA_REQ_SDHC2,
                  .bd_number = 32,
                  .word_size = TRANSFER_32BIT,
                  },
      .channel_num = MXC_DMA_CHANNEL_MMC2,
      .chnl_priority = MXC_SDMA_DEFAULT_PRIORITY,
};

static mxc_sdma_channel_params_t mxc_sdma_mmc2_width4_params = {
      .chnl_params = {
                  .watermark_level = MXC_SDHC_SD_WML,
                  .per_address =
                  MMC_SDHC2_BASE_ADDR + MXC_MMC_BUFFER_ACCESS,
                  .peripheral_type = MMC,
                  .transfer_type = per_2_emi,
                  .event_id = DMA_REQ_SDHC2,
                  .bd_number = 32,
                  .word_size = TRANSFER_32BIT,
                  },
      .channel_num = MXC_DMA_CHANNEL_MMC2,
      .chnl_priority = MXC_SDMA_DEFAULT_PRIORITY,
};

static mxc_sdma_channel_params_t mxc_sdma_ssi1_8bit_rx0_params = {
      .chnl_params = {
                  .watermark_level = MXC_SSI_RXFIFO_WML,
                  .per_address = SSI1_BASE_ADDR + MXC_SSI_RX0_REG,
                  .peripheral_type = SSI,
                  .transfer_type = per_2_emi,
                  .event_id = DMA_REQ_SSI1_RX1,
                  .bd_number = 32,
                  .word_size = TRANSFER_8BIT,
                  },
      .channel_num = MXC_DMA_CHANNEL_SSI1_RX,
      .chnl_priority = 2,
};

static mxc_sdma_channel_params_t mxc_sdma_ssi1_8bit_tx0_params = {
      .chnl_params = {
                  .watermark_level = MXC_SSI_TXFIFO_WML,
                  .per_address = SSI1_BASE_ADDR + MXC_SSI_TX0_REG,
                  .peripheral_type = SSI,
                  .transfer_type = emi_2_per,
                  .event_id = DMA_REQ_SSI1_TX1,
                  .bd_number = 32,
                  .word_size = TRANSFER_8BIT,
                  },
      .channel_num = MXC_DMA_CHANNEL_SSI1_TX,
      .chnl_priority = 2,
};

static mxc_sdma_channel_params_t mxc_sdma_ssi1_16bit_rx0_params = {
      .chnl_params = {
                  .watermark_level = MXC_SSI_RXFIFO_WML,
                  .per_address = SSI1_BASE_ADDR + MXC_SSI_RX0_REG,
                  .peripheral_type = SSI,
                  .transfer_type = per_2_emi,
                  .event_id = DMA_REQ_SSI1_RX1,
                  .bd_number = 32,
                  .word_size = TRANSFER_16BIT,
                  },
      .channel_num = MXC_DMA_CHANNEL_SSI1_RX,
      .chnl_priority = 2,
};

static mxc_sdma_channel_params_t mxc_sdma_ssi1_16bit_tx0_params = {
      .chnl_params = {
                  .watermark_level = MXC_SSI_TXFIFO_WML,
                  .per_address = SSI1_BASE_ADDR + MXC_SSI_TX0_REG,
                  .peripheral_type = SSI,
                  .transfer_type = emi_2_per,
                  .event_id = DMA_REQ_SSI1_TX1,
                  .bd_number = 32,
                  .word_size = TRANSFER_16BIT,
                  },
      .channel_num = MXC_DMA_CHANNEL_SSI1_TX,
      .chnl_priority = 2,
};

static mxc_sdma_channel_params_t mxc_sdma_ssi1_24bit_rx0_params = {
      .chnl_params = {
                  .watermark_level = MXC_SSI_RXFIFO_WML,
                  .per_address = SSI1_BASE_ADDR + MXC_SSI_RX0_REG,
                  .peripheral_type = SSI,
                  .transfer_type = per_2_emi,
                  .event_id = DMA_REQ_SSI1_RX1,
                  .bd_number = 32,
                  .word_size = TRANSFER_32BIT,
                  },
      .channel_num = MXC_DMA_CHANNEL_SSI1_RX,
      .chnl_priority = 2,
};

static mxc_sdma_channel_params_t mxc_sdma_ssi1_24bit_tx0_params = {
      .chnl_params = {
                  .watermark_level = MXC_SSI_TXFIFO_WML,
                  .per_address = SSI1_BASE_ADDR + MXC_SSI_TX0_REG,
                  .peripheral_type = SSI,
                  .transfer_type = emi_2_per,
                  .event_id = DMA_REQ_SSI1_TX1,
                  .bd_number = 32,
                  .word_size = TRANSFER_32BIT,
                  },
      .channel_num = MXC_DMA_CHANNEL_SSI1_TX,
      .chnl_priority = 2,
};

static mxc_sdma_channel_params_t mxc_sdma_ssi1_8bit_rx1_params = {
      .chnl_params = {
                  .watermark_level = MXC_SSI_RXFIFO_WML,
                  .per_address = SSI1_BASE_ADDR + MXC_SSI_RX1_REG,
                  .peripheral_type = SSI,
                  .transfer_type = per_2_emi,
                  .event_id = DMA_REQ_SSI1_RX2,
                  .bd_number = 32,
                  .word_size = TRANSFER_8BIT,
                  },
      .channel_num = MXC_DMA_CHANNEL_SSI1_RX,
      .chnl_priority = 2,
};

static mxc_sdma_channel_params_t mxc_sdma_ssi1_8bit_tx1_params = {
      .chnl_params = {
                  .watermark_level = MXC_SSI_TXFIFO_WML,
                  .per_address = SSI1_BASE_ADDR + MXC_SSI_TX1_REG,
                  .peripheral_type = SSI,
                  .transfer_type = emi_2_per,
                  .event_id = DMA_REQ_SSI1_TX2,
                  .bd_number = 32,
                  .word_size = TRANSFER_8BIT,
                  },
      .channel_num = MXC_DMA_CHANNEL_SSI1_TX,
      .chnl_priority = 2,
};

static mxc_sdma_channel_params_t mxc_sdma_ssi1_16bit_rx1_params = {
      .chnl_params = {
                  .watermark_level = MXC_SSI_RXFIFO_WML,
                  .per_address = SSI1_BASE_ADDR + MXC_SSI_RX1_REG,
                  .peripheral_type = SSI,
                  .transfer_type = per_2_emi,
                  .event_id = DMA_REQ_SSI1_RX2,
                  .bd_number = 32,
                  .word_size = TRANSFER_16BIT,
                  },
      .channel_num = MXC_DMA_CHANNEL_SSI1_RX,
      .chnl_priority = 2,
};

static mxc_sdma_channel_params_t mxc_sdma_ssi1_16bit_tx1_params = {
      .chnl_params = {
                  .watermark_level = MXC_SSI_TXFIFO_WML,
                  .per_address = SSI1_BASE_ADDR + MXC_SSI_TX1_REG,
                  .peripheral_type = SSI,
                  .transfer_type = emi_2_per,
                  .event_id = DMA_REQ_SSI1_TX2,
                  .bd_number = 32,
                  .word_size = TRANSFER_16BIT,
                  },
      .channel_num = MXC_DMA_CHANNEL_SSI1_TX,
      .chnl_priority = 2,
};

static mxc_sdma_channel_params_t mxc_sdma_ssi1_24bit_rx1_params = {
      .chnl_params = {
                  .watermark_level = MXC_SSI_RXFIFO_WML,
                  .per_address = SSI1_BASE_ADDR + MXC_SSI_RX1_REG,
                  .peripheral_type = SSI,
                  .transfer_type = per_2_emi,
                  .event_id = DMA_REQ_SSI1_RX2,
                  .bd_number = 32,
                  .word_size = TRANSFER_32BIT,
                  },
      .channel_num = MXC_DMA_CHANNEL_SSI1_RX,
      .chnl_priority = 2,
};

static mxc_sdma_channel_params_t mxc_sdma_ssi1_24bit_tx1_params = {
      .chnl_params = {
                  .watermark_level = MXC_SSI_TXFIFO_WML,
                  .per_address = SSI1_BASE_ADDR + MXC_SSI_TX1_REG,
                  .peripheral_type = SSI,
                  .transfer_type = emi_2_per,
                  .event_id = DMA_REQ_SSI1_TX2,
                  .bd_number = 32,
                  .word_size = TRANSFER_32BIT,
                  },
      .channel_num = MXC_DMA_CHANNEL_SSI1_TX,
      .chnl_priority = 2,
};

static mxc_sdma_channel_params_t mxc_sdma_ssi2_8bit_rx0_params = {
      .chnl_params = {
                  .watermark_level = MXC_SSI_RXFIFO_WML,
                  .per_address = SSI2_BASE_ADDR + MXC_SSI_RX0_REG,
                  .peripheral_type = SSI_SP,
                  .transfer_type = per_2_emi,
                  .event_id = DMA_REQ_SSI2_RX1,
                  .bd_number = 32,
                  .word_size = TRANSFER_8BIT,
                  },
      .channel_num = MXC_DMA_CHANNEL_SSI2_RX,
      .chnl_priority = 2,
};

static mxc_sdma_channel_params_t mxc_sdma_ssi2_8bit_tx0_params = {
      .chnl_params = {
                  .watermark_level = MXC_SSI_TXFIFO_WML,
                  .per_address = SSI2_BASE_ADDR + MXC_SSI_TX0_REG,
                  .peripheral_type = SSI_SP,
                  .transfer_type = emi_2_per,
                  .event_id = DMA_REQ_SSI2_TX1,
                  .bd_number = 32,
                  .word_size = TRANSFER_8BIT,
                  },
      .channel_num = MXC_DMA_CHANNEL_SSI2_TX,
      .chnl_priority = 2,
};

static mxc_sdma_channel_params_t mxc_sdma_ssi2_16bit_rx0_params = {
      .chnl_params = {
                  .watermark_level = MXC_SSI_RXFIFO_WML,
                  .per_address = SSI2_BASE_ADDR + MXC_SSI_RX0_REG,
                  .peripheral_type = SSI_SP,
                  .transfer_type = per_2_emi,
                  .event_id = DMA_REQ_SSI2_RX1,
                  .bd_number = 32,
                  .word_size = TRANSFER_16BIT,
                  },
      .channel_num = MXC_DMA_CHANNEL_SSI2_RX,
      .chnl_priority = 2,
};

static mxc_sdma_channel_params_t mxc_sdma_ssi2_16bit_tx0_params = {
      .chnl_params = {
                  .watermark_level = MXC_SSI_TXFIFO_WML,
                  .per_address = SSI2_BASE_ADDR + MXC_SSI_TX0_REG,
                  .peripheral_type = SSI_SP,
                  .transfer_type = emi_2_per,
                  .event_id = DMA_REQ_SSI2_TX1,
                  .bd_number = 32,
                  .word_size = TRANSFER_16BIT,
                  },
      .channel_num = MXC_DMA_CHANNEL_SSI2_TX,
      .chnl_priority = 2,
};

static mxc_sdma_channel_params_t mxc_sdma_ssi2_24bit_rx0_params = {
      .chnl_params = {
                  .watermark_level = MXC_SSI_RXFIFO_WML,
                  .per_address = SSI2_BASE_ADDR + MXC_SSI_RX0_REG,
                  .peripheral_type = SSI_SP,
                  .transfer_type = per_2_emi,
                  .event_id = DMA_REQ_SSI2_RX1,
                  .bd_number = 32,
                  .word_size = TRANSFER_32BIT,
                  },
      .channel_num = MXC_DMA_CHANNEL_SSI2_RX,
      .chnl_priority = 2,
};

static mxc_sdma_channel_params_t mxc_sdma_ssi2_24bit_tx0_params = {
      .chnl_params = {
                  .watermark_level = MXC_SSI_TXFIFO_WML,
                  .per_address = SSI2_BASE_ADDR + MXC_SSI_TX0_REG,
                  .peripheral_type = SSI_SP,
                  .transfer_type = emi_2_per,
                  .event_id = DMA_REQ_SSI2_TX1,
                  .bd_number = 32,
                  .word_size = TRANSFER_32BIT,
                  },
      .channel_num = MXC_DMA_CHANNEL_SSI2_TX,
      .chnl_priority = 2,
};

static mxc_sdma_channel_params_t mxc_sdma_ssi2_8bit_rx1_params = {
      .chnl_params = {
                  .watermark_level = MXC_SSI_RXFIFO_WML,
                  .per_address = SSI2_BASE_ADDR + MXC_SSI_RX1_REG,
                  .peripheral_type = SSI_SP,
                  .transfer_type = per_2_emi,
                  .event_id = DMA_REQ_SSI2_RX2,
                  .bd_number = 32,
                  .word_size = TRANSFER_8BIT,
                  },
      .channel_num = MXC_DMA_CHANNEL_SSI2_RX,
      .chnl_priority = 2,
};

static mxc_sdma_channel_params_t mxc_sdma_ssi2_8bit_tx1_params = {
      .chnl_params = {
                  .watermark_level = MXC_SSI_TXFIFO_WML,
                  .per_address = SSI2_BASE_ADDR + MXC_SSI_TX1_REG,
                  .peripheral_type = SSI_SP,
                  .transfer_type = emi_2_per,
                  .event_id = DMA_REQ_SSI2_TX2,
                  .bd_number = 32,
                  .word_size = TRANSFER_8BIT,
                  },
      .channel_num = MXC_DMA_CHANNEL_SSI2_TX,
      .chnl_priority = 2,
};

static mxc_sdma_channel_params_t mxc_sdma_ssi2_16bit_rx1_params = {
      .chnl_params = {
                  .watermark_level = MXC_SSI_RXFIFO_WML,
                  .per_address = SSI2_BASE_ADDR + MXC_SSI_RX1_REG,
                  .peripheral_type = SSI_SP,
                  .transfer_type = per_2_emi,
                  .event_id = DMA_REQ_SSI2_RX2,
                  .bd_number = 32,
                  .word_size = TRANSFER_16BIT,
                  },
      .channel_num = MXC_DMA_CHANNEL_SSI2_RX,
      .chnl_priority = 2,
};

static mxc_sdma_channel_params_t mxc_sdma_ssi2_16bit_tx1_params = {
      .chnl_params = {
                  .watermark_level = MXC_SSI_TXFIFO_WML,
                  .per_address = SSI2_BASE_ADDR + MXC_SSI_TX1_REG,
                  .peripheral_type = SSI_SP,
                  .transfer_type = emi_2_per,
                  .event_id = DMA_REQ_SSI2_TX2,
                  .bd_number = 32,
                  .word_size = TRANSFER_16BIT,
                  },
      .channel_num = MXC_DMA_CHANNEL_SSI2_TX,
      .chnl_priority = 2,
};

static mxc_sdma_channel_params_t mxc_sdma_ssi2_24bit_rx1_params = {
      .chnl_params = {
                  .watermark_level = MXC_SSI_RXFIFO_WML,
                  .per_address = SSI2_BASE_ADDR + MXC_SSI_RX1_REG,
                  .peripheral_type = SSI_SP,
                  .transfer_type = per_2_emi,
                  .event_id = DMA_REQ_SSI2_RX2,
                  .bd_number = 32,
                  .word_size = TRANSFER_32BIT,
                  },
      .channel_num = MXC_DMA_CHANNEL_SSI2_RX,
      .chnl_priority = 2,
};

static mxc_sdma_channel_params_t mxc_sdma_ssi2_24bit_tx1_params = {
      .chnl_params = {
                  .watermark_level = MXC_SSI_TXFIFO_WML,
                  .per_address = SSI2_BASE_ADDR + MXC_SSI_TX1_REG,
                  .peripheral_type = SSI_SP,
                  .transfer_type = emi_2_per,
                  .event_id = DMA_REQ_SSI2_TX2,
                  .bd_number = 32,
                  .word_size = TRANSFER_32BIT,
                  },
      .channel_num = MXC_DMA_CHANNEL_SSI2_TX,
      .chnl_priority = 2,
};

static mxc_sdma_channel_params_t mxc_sdma_memory_params = {
      .chnl_params = {
                  .peripheral_type = MEMORY,
                  .transfer_type = emi_2_emi,
                  .bd_number = 32,
                  .word_size = TRANSFER_32BIT,
                  },
      .channel_num = MXC_DMA_CHANNEL_MEMORY,
      .chnl_priority = MXC_SDMA_DEFAULT_PRIORITY,
};

static mxc_sdma_channel_params_t mxc_sdma_ata_rx_params = {
      .chnl_params = {
                  .watermark_level = MXC_IDE_DMA_WATERMARK,
                  .per_address = ATA_DMA_BASE_ADDR,
                  .peripheral_type = ATA,
                  .transfer_type = per_2_emi,
                  .event_id = DMA_REQ_ATA_TX_END,
                  .event_id2 = DMA_REQ_ATA_RX,
                  .bd_number = MXC_IDE_DMA_BD_NR,
                  .word_size = TRANSFER_32BIT,
                  },
      .channel_num = MXC_DMA_CHANNEL_ATA_RX,
      .chnl_priority = MXC_SDMA_DEFAULT_PRIORITY,
};

static mxc_sdma_channel_params_t mxc_sdma_ata_tx_params = {
      .chnl_params = {
                  .watermark_level = MXC_IDE_DMA_WATERMARK,
                  .per_address = ATA_DMA_BASE_ADDR + 0x18,
                  .peripheral_type = ATA,
                  .transfer_type = emi_2_per,
                  .event_id = DMA_REQ_ATA_TX_END,
                  .event_id2 = DMA_REQ_ATA_TX,
                  .bd_number = MXC_IDE_DMA_BD_NR,
                  .word_size = TRANSFER_32BIT,
                  },
      .channel_num = MXC_DMA_CHANNEL_ATA_TX,
      .chnl_priority = MXC_SDMA_DEFAULT_PRIORITY,
};

static mxc_sdma_channel_params_t mxc_sdma_spdif_16bit_tx_params = {
      .chnl_params = {
                  .watermark_level = MXC_SPDIF_TXFIFO_WML,
                  .per_address = SPDIF_BASE_ADDR + MXC_SPDIF_TX_REG,
                  .peripheral_type = SPDIF,
                  .transfer_type = emi_2_per,
                  .event_id = DMA_REQ_SPDIF,
                  .bd_number = 32,
                  .word_size = TRANSFER_16BIT,
                  },
      .channel_num = MXC_DMA_CHANNEL_SPDIF_TX,
      .chnl_priority = MXC_SDMA_DEFAULT_PRIORITY,
};

static mxc_sdma_channel_params_t mxc_sdma_spdif_32bit_tx_params = {
      .chnl_params = {
                  .watermark_level = MXC_SPDIF_TXFIFO_WML,
                  .per_address = SPDIF_BASE_ADDR + MXC_SPDIF_TX_REG,
                  .peripheral_type = SPDIF,
                  .transfer_type = emi_2_per,
                  .event_id = DMA_REQ_SPDIF,
                  .bd_number = 32,
                  .word_size = TRANSFER_32BIT,
                  },
      .channel_num = MXC_DMA_CHANNEL_SPDIF_TX,
      .chnl_priority = MXC_SDMA_DEFAULT_PRIORITY,
};

static mxc_sdma_info_entry_t mxc_sdma_active_dma_info[] = {
      {MXC_DMA_UART1_RX, &mxc_sdma_uart1_rx_params},
      {MXC_DMA_UART1_TX, &mxc_sdma_uart1_tx_params},
      {MXC_DMA_UART2_RX, &mxc_sdma_uart2_rx_params},
      {MXC_DMA_UART2_TX, &mxc_sdma_uart2_tx_params},
      {MXC_DMA_UART3_RX, &mxc_sdma_uart3_rx_params},
      {MXC_DMA_UART3_TX, &mxc_sdma_uart3_tx_params},
      {MXC_DMA_MMC1_WIDTH_1, &mxc_sdma_mmc1_width1_params},
      {MXC_DMA_MMC1_WIDTH_4, &mxc_sdma_mmc1_width4_params},
      {MXC_DMA_MMC2_WIDTH_1, &mxc_sdma_mmc2_width1_params},
      {MXC_DMA_MMC2_WIDTH_4, &mxc_sdma_mmc2_width4_params},
      {MXC_DMA_SSI1_8BIT_RX0, &mxc_sdma_ssi1_8bit_rx0_params},
      {MXC_DMA_SSI1_8BIT_TX0, &mxc_sdma_ssi1_8bit_tx0_params},
      {MXC_DMA_SSI1_16BIT_RX0, &mxc_sdma_ssi1_16bit_rx0_params},
      {MXC_DMA_SSI1_16BIT_TX0, &mxc_sdma_ssi1_16bit_tx0_params},
      {MXC_DMA_SSI1_24BIT_RX0, &mxc_sdma_ssi1_24bit_rx0_params},
      {MXC_DMA_SSI1_24BIT_TX0, &mxc_sdma_ssi1_24bit_tx0_params},
      {MXC_DMA_SSI1_8BIT_RX1, &mxc_sdma_ssi1_8bit_rx1_params},
      {MXC_DMA_SSI1_8BIT_TX1, &mxc_sdma_ssi1_8bit_tx1_params},
      {MXC_DMA_SSI1_16BIT_RX1, &mxc_sdma_ssi1_16bit_rx1_params},
      {MXC_DMA_SSI1_16BIT_TX1, &mxc_sdma_ssi1_16bit_tx1_params},
      {MXC_DMA_SSI1_24BIT_RX1, &mxc_sdma_ssi1_24bit_rx1_params},
      {MXC_DMA_SSI1_24BIT_TX1, &mxc_sdma_ssi1_24bit_tx1_params},
      {MXC_DMA_SSI2_8BIT_RX0, &mxc_sdma_ssi2_8bit_rx0_params},
      {MXC_DMA_SSI2_8BIT_TX0, &mxc_sdma_ssi2_8bit_tx0_params},
      {MXC_DMA_SSI2_16BIT_RX0, &mxc_sdma_ssi2_16bit_rx0_params},
      {MXC_DMA_SSI2_16BIT_TX0, &mxc_sdma_ssi2_16bit_tx0_params},
      {MXC_DMA_SSI2_24BIT_RX0, &mxc_sdma_ssi2_24bit_rx0_params},
      {MXC_DMA_SSI2_24BIT_TX0, &mxc_sdma_ssi2_24bit_tx0_params},
      {MXC_DMA_SSI2_8BIT_RX1, &mxc_sdma_ssi2_8bit_rx1_params},
      {MXC_DMA_SSI2_8BIT_TX1, &mxc_sdma_ssi2_8bit_tx1_params},
      {MXC_DMA_SSI2_16BIT_RX1, &mxc_sdma_ssi2_16bit_rx1_params},
      {MXC_DMA_SSI2_16BIT_TX1, &mxc_sdma_ssi2_16bit_tx1_params},
      {MXC_DMA_SSI2_24BIT_RX1, &mxc_sdma_ssi2_24bit_rx1_params},
      {MXC_DMA_SSI2_24BIT_TX1, &mxc_sdma_ssi2_24bit_tx1_params},
      {MXC_DMA_MEMORY, &mxc_sdma_memory_params},
      {MXC_DMA_ATA_RX, &mxc_sdma_ata_rx_params},
      {MXC_DMA_ATA_TX, &mxc_sdma_ata_tx_params},
      {MXC_DMA_SPDIF_16BIT_TX, &mxc_sdma_spdif_16bit_tx_params},
      {MXC_DMA_SPDIF_32BIT_TX, &mxc_sdma_spdif_32bit_tx_params},
};

static int mxc_sdma_info_entrys =
    sizeof(mxc_sdma_active_dma_info) / sizeof(mxc_sdma_active_dma_info[0]);

/*!
 * This functions Returns the SDMA paramaters associated for a module
 *
 * @param channel_id the ID of the module requesting DMA
 * @return returns the sdma parameters structure for the device
 */
mxc_sdma_channel_params_t *mxc_sdma_get_channel_params(mxc_dma_device_t
                                           channel_id)
{
      mxc_sdma_info_entry_t *p = mxc_sdma_active_dma_info;
      int i;

      for (i = 0; i < mxc_sdma_info_entrys; i++, p++) {
            if (p->device == channel_id)
                  return p->chnl_info;

      }
      return NULL;
}

/*!
 * This functions marks the SDMA channels that are statically allocated
 *
 * @param chnl the channel array used to store channel information
 */
void mxc_get_static_channels(mxc_dma_channel_t *chnl)
{
#ifdef CONFIG_SDMA_IRAM
      int i;
      for (i = MXC_DMA_CHANNEL_IRAM; i < MAX_DMA_CHANNELS; i++)
            chnl[i].dynamic = 0;
#endif
}

EXPORT_SYMBOL(mxc_sdma_get_channel_params);
EXPORT_SYMBOL(mxc_get_static_channels);

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