pluto_hdl_adi/library/common/up_hdmi_rx.v

290 lines
9.4 KiB
Verilog

// ***************************************************************************
// ***************************************************************************
// Copyright 2014 - 2017 (c) Analog Devices, Inc. All rights reserved.
//
// In this HDL repository, there are many different and unique modules, consisting
// of various HDL (Verilog or VHDL) components. The individual modules are
// developed independently, and may be accompanied by separate and unique license
// terms.
//
// The user should read each of these license terms, and understand the
// freedoms and responsibilities that he or she has by using this source/core.
//
// This core is distributed in the hope that it will be useful, but WITHOUT ANY
// WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
// A PARTICULAR PURPOSE.
//
// Redistribution and use of source or resulting binaries, with or without modification
// of this file, are permitted under one of the following two license terms:
//
// 1. The GNU General Public License version 2 as published by the
// Free Software Foundation, which can be found in the top level directory
// of this repository (LICENSE_GPL2), and also online at:
// <https://www.gnu.org/licenses/old-licenses/gpl-2.0.html>
//
// OR
//
// 2. An ADI specific BSD license, which can be found in the top level directory
// of this repository (LICENSE_ADIBSD), and also on-line at:
// https://github.com/analogdevicesinc/hdl/blob/master/LICENSE_ADIBSD
// This will allow to generate bit files and not release the source code,
// as long as it attaches to an ADI device.
//
// ***************************************************************************
// ***************************************************************************
`timescale 1ns/100ps
module up_hdmi_rx #(
parameter ID = 0
) (
// hdmi interface
input hdmi_clk,
output hdmi_rst,
output hdmi_edge_sel,
output hdmi_bgr,
output hdmi_packed,
output hdmi_csc_bypass,
output [15:0] hdmi_vs_count,
output [15:0] hdmi_hs_count,
input hdmi_dma_ovf,
input hdmi_dma_unf,
input hdmi_tpm_oos,
input hdmi_vs_oos,
input hdmi_hs_oos,
input hdmi_vs_mismatch,
input hdmi_hs_mismatch,
input [15:0] hdmi_vs,
input [15:0] hdmi_hs,
input [31:0] hdmi_clk_ratio,
// bus interface
input up_rstn,
input up_clk,
input up_wreq,
input [13:0] up_waddr,
input [31:0] up_wdata,
output reg up_wack,
input up_rreq,
input [13:0] up_raddr,
output reg [31:0] up_rdata,
output reg up_rack
);
localparam PCORE_VERSION = 32'h00040063;
// internal registers
reg up_core_preset = 'd0;
reg up_resetn = 'd0;
reg [31:0] up_scratch = 'd0;
reg up_edge_sel = 'd0;
reg up_bgr = 'd0;
reg up_packed = 'd0;
reg up_csc_bypass = 'd0;
reg up_dma_ovf = 'd0;
reg up_dma_unf = 'd0;
reg up_tpm_oos = 'd0;
reg up_vs_oos = 'd0;
reg up_hs_oos = 'd0;
reg up_vs_mismatch = 'd0;
reg up_hs_mismatch = 'd0;
reg [15:0] up_vs_count = 'd0;
reg [15:0] up_hs_count = 'd0;
// internal signals
wire up_wreq_s;
wire up_rreq_s;
wire up_dma_ovf_s;
wire up_dma_unf_s;
wire up_vs_oos_s;
wire up_hs_oos_s;
wire up_vs_mismatch_s;
wire up_hs_mismatch_s;
wire [15:0] up_vs_s;
wire [15:0] up_hs_s;
wire [31:0] up_clk_count_s;
// decode block select
assign up_wreq_s = (up_waddr[13:12] == 2'd0) ? up_wreq : 1'b0;
assign up_rreq_s = (up_raddr[13:12] == 2'd0) ? up_rreq : 1'b0;
// processor write interface
always @(negedge up_rstn or posedge up_clk) begin
if (up_rstn == 0) begin
up_core_preset <= 1'd1;
up_resetn <= 'd0;
up_wack <= 'd0;
up_scratch <= 'd0;
up_edge_sel <= 'd0;
up_bgr <= 'd0;
up_packed <= 'd0;
up_csc_bypass <= 'd0;
up_dma_ovf <= 'd0;
up_dma_unf <= 'd0;
up_tpm_oos <= 'd0;
up_vs_oos <= 'd0;
up_hs_oos <= 'd0;
up_vs_mismatch <= 'd0;
up_hs_mismatch <= 'd0;
up_vs_count <= 'd0;
up_hs_count <= 'd0;
end else begin
up_wack <= up_wreq_s;
up_core_preset <= ~up_resetn;
if ((up_wreq_s == 1'b1) && (up_waddr[11:0] == 12'h002)) begin
up_scratch <= up_wdata;
end
if ((up_wreq_s == 1'b1) && (up_waddr[11:0] == 12'h010)) begin
up_resetn <= up_wdata[0];
end
if ((up_wreq_s == 1'b1) && (up_waddr[11:0] == 12'h011)) begin
up_edge_sel <= up_wdata[3];
up_bgr <= up_wdata[2];
up_packed <= up_wdata[1];
up_csc_bypass <= up_wdata[0];
end
if (up_dma_ovf_s == 1'b1) begin
up_dma_ovf <= 1'b1;
end else if ((up_wreq_s == 1'b1) && (up_waddr[11:0] == 12'h018)) begin
up_dma_ovf <= up_dma_ovf & ~up_wdata[1];
end
if (up_dma_unf_s == 1'b1) begin
up_dma_unf <= 1'b1;
end else if ((up_wreq_s == 1'b1) && (up_waddr[11:0] == 12'h018)) begin
up_dma_unf <= up_dma_unf & ~up_wdata[0];
end
if (up_tpm_oos_s == 1'b1) begin
up_tpm_oos <= 1'b1;
end else if ((up_wreq_s == 1'b1) && (up_waddr[11:0] == 12'h019)) begin
up_tpm_oos <= up_tpm_oos & ~up_wdata[1];
end
if (up_vs_oos_s == 1'b1) begin
up_vs_oos <= 1'b1;
end else if ((up_wreq_s == 1'b1) && (up_waddr[11:0] == 12'h020)) begin
up_vs_oos <= up_vs_oos & ~up_wdata[3];
end
if (up_hs_oos_s == 1'b1) begin
up_hs_oos <= 1'b1;
end else if ((up_wreq_s == 1'b1) && (up_waddr[11:0] == 12'h020)) begin
up_hs_oos <= up_hs_oos & ~up_wdata[2];
end
if (up_vs_mismatch_s == 1'b1) begin
up_vs_mismatch <= 1'b1;
end else if ((up_wreq_s == 1'b1) && (up_waddr[11:0] == 12'h020)) begin
up_vs_mismatch <= up_vs_mismatch & ~up_wdata[1];
end
if (up_hs_mismatch_s == 1'b1) begin
up_hs_mismatch <= 1'b1;
end else if ((up_wreq_s == 1'b1) && (up_waddr[11:0] == 12'h020)) begin
up_hs_mismatch <= up_hs_mismatch & ~up_wdata[0];
end
if ((up_wreq_s == 1'b1) && (up_waddr[11:0] == 12'h100)) begin
up_vs_count <= up_wdata[31:16];
up_hs_count <= up_wdata[15:0];
end
end
end
// processor read interface
always @(negedge up_rstn or posedge up_clk) begin
if (up_rstn == 1'b0) begin
up_rack <= 'd0;
up_rdata <= 'd0;
end else begin
up_rack <= up_rreq_s;
if(up_rreq_s == 1'b1) begin
case (up_raddr[11:0])
12'h000: up_rdata <= PCORE_VERSION;
12'h001: up_rdata <= ID;
12'h002: up_rdata <= up_scratch;
12'h010: up_rdata <= {31'h0, up_resetn};
12'h011: up_rdata <= {28'h0, up_edge_sel, up_bgr, up_packed, up_csc_bypass};
12'h015: up_rdata <= up_clk_count_s;
12'h016: up_rdata <= hdmi_clk_ratio;
12'h018: up_rdata <= {30'h0, up_dma_ovf, up_dma_unf};
12'h019: up_rdata <= {30'h0, up_tpm_oos, 1'b0};
12'h020: up_rdata <= {28'h0, up_vs_oos, up_hs_oos,
up_vs_mismatch, up_hs_mismatch};
12'h100: up_rdata <= {up_vs_count, up_hs_count};
12'h101: up_rdata <= {up_vs_s, up_hs_s};
default: up_rdata <= 0;
endcase
end
end
end
// resets
ad_rst i_hdmi_rst_reg (
.rst_async (up_core_preset),
.clk (hdmi_clk),
.rstn (),
.rst (hdmi_rst));
// hdmi control & status
up_xfer_cntrl #(
.DATA_WIDTH(36)
) i_hdmi_xfer_cntrl (
.up_rstn (up_rstn),
.up_clk (up_clk),
.up_data_cntrl ({ up_edge_sel,
up_bgr,
up_packed,
up_csc_bypass,
up_vs_count,
up_hs_count}),
.up_xfer_done (),
.d_rst (hdmi_rst),
.d_clk (hdmi_clk),
.d_data_cntrl ({ hdmi_edge_sel,
hdmi_bgr,
hdmi_packed,
hdmi_csc_bypass,
hdmi_vs_count,
hdmi_hs_count}));
up_xfer_status #(
.DATA_WIDTH(39)
) i_hdmi_xfer_status (
.up_rstn (up_rstn),
.up_clk (up_clk),
.up_data_status ({ up_dma_ovf_s,
up_dma_unf_s,
up_tpm_oos_s,
up_vs_oos_s,
up_hs_oos_s,
up_vs_mismatch_s,
up_hs_mismatch_s,
up_vs_s,
up_hs_s}),
.d_rst (hdmi_rst),
.d_clk (hdmi_clk),
.d_data_status ({ hdmi_dma_ovf,
hdmi_dma_unf,
hdmi_tpm_oos,
hdmi_vs_oos,
hdmi_hs_oos,
hdmi_vs_mismatch,
hdmi_hs_mismatch,
hdmi_vs,
hdmi_hs}));
up_clock_mon i_hdmi_clock_mon (
.up_rstn (up_rstn),
.up_clk (up_clk),
.up_d_count (up_clk_count_s),
.d_rst (hdmi_rst),
.d_clk (hdmi_clk));
endmodule