hw/ip/cam_ctrl/rtl/cam_ctrl.sv

// Copyright 2023 Google LLC
// Copyright lowRISC contributors
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//      http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

//
// Camera control module for HiMax HM01B0 Image Sensor.

`include "prim_assert.sv"

module cam_ctrl
  import cam_ctrl_reg_pkg::*;
(
  input clk_i,
  input rst_ni,

  // Bus interface
  input  tlul_pkg::tl_h2d_t tl_i,
  output tlul_pkg::tl_d2h_t tl_o,

  output  intr_cam_motion_detect_o,

  input   cio_cam_int_i,
  output  cio_cam_trig_o,
  output  cio_cam_trig_en_o
);

  cam_ctrl_reg2hw_t reg2hw;
  cam_ctrl_hw2reg_t hw2reg;

  // Register module
  cam_ctrl_reg_top u_reg (
    .clk_i,
    .rst_ni,

    .tl_i,
    .tl_o,

    .reg2hw,
    .hw2reg,

    .intg_err_o (),
    .devmode_i  (1'b1)
  );


 prim_intr_hw #(.Width(1)) intr_hw_motion_detect (
    .clk_i,
    .rst_ni,
    .event_intr_i           (cio_cam_int_i),
    .reg2hw_intr_enable_q_i (reg2hw.intr_enable.q),
    .reg2hw_intr_test_q_i   (reg2hw.intr_test.q),
    .reg2hw_intr_test_qe_i  (reg2hw.intr_test.qe),
    .reg2hw_intr_state_q_i  (reg2hw.intr_state.q),
    .hw2reg_intr_state_de_o (hw2reg.intr_state.de),
    .hw2reg_intr_state_d_o  (hw2reg.intr_state.d),
    .intr_o                 (intr_cam_motion_detect_o)
  );

  ////////////////////////////////////////////////////
  // Software controls cam_trig                     //
  ////////////////////////////////////////////////////

assign cio_cam_trig_o = reg2hw.ctrl[0];
assign cio_cam_trig_en_o = 1'b1;

endmodule