LXR linux/drivers/staging/media/atomisp/pci/css_2401_system/ibuf_ctrl

   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#ifndef __IBUF_CTRL_GLOBAL_H_INCLUDED__
  17#define __IBUF_CTRL_GLOBAL_H_INCLUDED__
  18
  19#include <type_support.h>
  20
  21#include <ibuf_cntrl_defs.h>    /* _IBUF_CNTRL_RECALC_WORDS_STATUS,
  22                                 * _IBUF_CNTRL_ARBITERS_STATUS,
  23                                 * _IBUF_CNTRL_PROC_REG_ALIGN,
  24                                 * etc.
  25                                 */
  26
  27/* Definition of contents of main controller state register is lacking
  28 * in ibuf_cntrl_defs.h, so define these here:
  29 */
  30#define _IBUF_CNTRL_MAIN_CNTRL_FSM_MASK                 0xf
  31#define _IBUF_CNTRL_MAIN_CNTRL_FSM_NEXT_COMMAND_CHECK   0x9
  32#define _IBUF_CNTRL_MAIN_CNTRL_MEM_INP_BUF_ALLOC        BIT(8)
  33#define _IBUF_CNTRL_DMA_SYNC_WAIT_FOR_SYNC              1
  34#define _IBUF_CNTRL_DMA_SYNC_FSM_WAIT_FOR_ACK           (0x3 << 1)
  35
  36struct  isp2401_ib_buffer_s {
  37        u32     start_addr;     /* start address of the buffer in the
  38                                         * "input-buffer hardware block"
  39                                         */
  40
  41        u32     stride;         /* stride per buffer line (in bytes) */
  42        u32     lines;          /* lines in the buffer */
  43};
  44typedef struct isp2401_ib_buffer_s      isp2401_ib_buffer_t;
  45
  46typedef struct ibuf_ctrl_cfg_s ibuf_ctrl_cfg_t;
  47struct ibuf_ctrl_cfg_s {
  48        bool online;
  49
  50        struct {
  51                /* DMA configuration */
  52                u32 channel;
  53                u32 cmd; /* must be _DMA_V2_MOVE_A2B_NO_SYNC_CHK_COMMAND */
  54
  55                /* DMA reconfiguration */
  56                u32 shift_returned_items;
  57                u32 elems_per_word_in_ibuf;
  58                u32 elems_per_word_in_dest;
  59        } dma_cfg;
  60
  61        isp2401_ib_buffer_t ib_buffer;
  62
  63        struct {
  64                u32 stride;
  65                u32 start_addr;
  66                u32 lines;
  67        } dest_buf_cfg;
  68
  69        u32 items_per_store;
  70        u32 stores_per_frame;
  71
  72        struct {
  73                u32 sync_cmd;   /* must be _STREAM2MMIO_CMD_TOKEN_SYNC_FRAME */
  74                u32 store_cmd;  /* must be _STREAM2MMIO_CMD_TOKEN_STORE_PACKETS */
  75        } stream2mmio_cfg;
  76};
  77
  78extern const u32 N_IBUF_CTRL_PROCS[N_IBUF_CTRL_ID];
  79
  80#endif /* __IBUF_CTRL_GLOBAL_H_INCLUDED__ */
  81