LXR linux/drivers/staging/media/atomisp/pci/css_2401_system/host/isys

   1// SPDX-License-Identifier: GPL-2.0
   2/*
   3 * Support for Intel Camera Imaging ISP subsystem.
   4 * Copyright (c) 2015, Intel Corporation.
   5 *
   6 * This program is free software; you can redistribute it and/or modify it
   7 * under the terms and conditions of the GNU General Public License,
   8 * version 2, as published by the Free Software Foundation.
   9 *
  10 * This program is distributed in the hope it will be useful, but WITHOUT
  11 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  12 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
  13 * more details.
  14 */
  15
  16#include "system_local.h"
  17#include "isys_dma_global.h"
  18#include "assert_support.h"
  19#include "isys_dma_private.h"
  20
  21const isys2401_dma_channel N_ISYS2401_DMA_CHANNEL_PROCS[N_ISYS2401_DMA_ID] = {
  22        N_ISYS2401_DMA_CHANNEL
  23};
  24
  25void isys2401_dma_set_max_burst_size(
  26    const isys2401_dma_ID_t     dma_id,
  27    uint32_t            max_burst_size)
  28{
  29        assert(dma_id < N_ISYS2401_DMA_ID);
  30        assert((max_burst_size > 0x00) && (max_burst_size <= 0xFF));
  31
  32        isys2401_dma_reg_store(dma_id,
  33                               DMA_DEV_INFO_REG_IDX(_DMA_V2_DEV_INTERF_MAX_BURST_IDX, HIVE_DMA_BUS_DDR_CONN),
  34                               (max_burst_size - 1));
  35}
  36