LXR linux/drivers/staging/media/atomisp/pci/atomisp2/css2400/css_2401_csi2p_system/ibuf_ctrl

   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 __IBUF_CTRL_GLOBAL_H_INCLUDED__
  16#define __IBUF_CTRL_GLOBAL_H_INCLUDED__
  17
  18#include <type_support.h>
  19
  20#include <ibuf_cntrl_defs.h>    /* _IBUF_CNTRL_RECALC_WORDS_STATUS,
  21                                 * _IBUF_CNTRL_ARBITERS_STATUS,
  22                                 * _IBUF_CNTRL_PROC_REG_ALIGN,
  23                                 * etc.
  24                                 */
  25
  26/* Definition of contents of main controller state register is lacking
  27 * in ibuf_cntrl_defs.h, so define these here:
  28 */
  29#define _IBUF_CNTRL_MAIN_CNTRL_FSM_MASK                 0xf
  30#define _IBUF_CNTRL_MAIN_CNTRL_FSM_NEXT_COMMAND_CHECK   0x9
  31#define _IBUF_CNTRL_MAIN_CNTRL_MEM_INP_BUF_ALLOC        (1 << 8)
  32#define _IBUF_CNTRL_DMA_SYNC_WAIT_FOR_SYNC              1
  33#define _IBUF_CNTRL_DMA_SYNC_FSM_WAIT_FOR_ACK           (0x3 << 1)
  34
  35typedef struct ib_buffer_s      ib_buffer_t;
  36struct  ib_buffer_s {
  37        uint32_t        start_addr;     /* start address of the buffer in the
  38                                         * "input-buffer hardware block"
  39                                         */
  40
  41        uint32_t        stride;         /* stride per buffer line (in bytes) */
  42        uint32_t        lines;          /* lines in the buffer */
  43};
  44
  45typedef struct ibuf_ctrl_cfg_s ibuf_ctrl_cfg_t;
  46struct ibuf_ctrl_cfg_s {
  47
  48        bool online;
  49
  50        struct {
  51                /* DMA configuration */
  52                uint32_t channel;
  53                uint32_t cmd; /* must be _DMA_V2_MOVE_A2B_NO_SYNC_CHK_COMMAND */
  54
  55                /* DMA reconfiguration */
  56                uint32_t shift_returned_items;
  57                uint32_t elems_per_word_in_ibuf;
  58                uint32_t elems_per_word_in_dest;
  59        } dma_cfg;
  60
  61        ib_buffer_t ib_buffer;
  62
  63        struct {
  64                uint32_t stride;
  65                uint32_t start_addr;
  66                uint32_t lines;
  67        } dest_buf_cfg;
  68
  69        uint32_t items_per_store;
  70        uint32_t stores_per_frame;
  71
  72        struct {
  73                uint32_t sync_cmd;      /* must be _STREAM2MMIO_CMD_TOKEN_SYNC_FRAME */
  74                uint32_t store_cmd;     /* must be _STREAM2MMIO_CMD_TOKEN_STORE_PACKETS */
  75        } stream2mmio_cfg;
  76};
  77
  78extern const uint32_t N_IBUF_CTRL_PROCS[N_IBUF_CTRL_ID];
  79
  80#endif /* __IBUF_CTRL_GLOBAL_H_INCLUDED__ */
  81