drivers/staging/media/atomisp/pci/atomisp2/css2400/hive_isp_css_include/host/dma_public.h

   1 /*
   2  * Support for Intel Camera Imaging ISP subsystem.
   3  * Copyright (c) 2015, Intel Corporation.
   4  *
   5  * This program is free software; you can redistribute it and/or modify it
   6  * under the terms and conditions of the GNU General Public License,
   7  * version 2, as published by the Free Software Foundation.
   8  *
   9  * This program is distributed in the hope it will be useful, but WITHOUT
  10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
  12  * more details.
  13  */
  14
  15 #ifndef __DMA_PUBLIC_H_INCLUDED__
  16 #define __DMA_PUBLIC_H_INCLUDED__
  17
  18 #include "system_types.h"
  19
  20 typedef struct dma_state_s              dma_state_t;
  21
  22 /*! Read the control registers of DMA[ID]
  23
  24  \param ID[in]                          DMA identifier
  25  \param state[out]                      input formatter state structure
  26
  27  \return none, state = DMA[ID].state
  28  */
  29 extern void dma_get_state(
  30         const dma_ID_t          ID,
  31         dma_state_t                     *state);
  32
  33 /*! Write to a control register of DMA[ID]
  34
  35  \param ID[in]                          DMA identifier
  36  \param reg[in]                         register index
  37  \param value[in]                       The data to be written
  38
  39  \return none, DMA[ID].ctrl[reg] = value
  40  */
  41 STORAGE_CLASS_DMA_H void dma_reg_store(
  42         const dma_ID_t          ID,
  43         const unsigned int      reg,
  44         const hrt_data          value);
  45
  46 /*! Read from a control register of DMA[ID]
  47
  48  \param ID[in]                          DMA identifier
  49  \param reg[in]                         register index
  50  \param value[in]                       The data to be written
  51
  52  \return DMA[ID].ctrl[reg]
  53  */
  54 STORAGE_CLASS_DMA_H hrt_data dma_reg_load(
  55         const dma_ID_t          ID,
  56         const unsigned int      reg);
  57
  58
  59 /*! Set maximum burst size of DMA[ID]
  60
  61  \param ID[in]                          DMA identifier
  62  \param conn[in]                        Connection to set max burst size for
  63  \param max_burst_size[in]              Maximum burst size in words
  64
  65  \return none
  66 */
  67 void
  68 dma_set_max_burst_size(
  69         dma_ID_t                ID,
  70         dma_connection          conn,
  71         uint32_t                max_burst_size);
  72
  73 #endif /* __DMA_PUBLIC_H_INCLUDED__ */