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axi_hdmi_rx: Fix packed 422 mode 

Currently the hdmi_de_int signal is asserted one clock cycle too early in
packed 422 mode. As a result the EAV sequence ends up in the first pixel
and every other pixel is off by one.

Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
main
Lars-Peter Clausen 2015-06-30 17:50:35 +02:00
parent fa15f8d0b5
commit 35988b2dba
1 changed files with 7 additions and 2 deletions
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7
library/axi_hdmi_rx/axi_hdmi_rx_core.v
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@ -99,6 +99,7 @@ module axi_hdmi_rx_core (
reg [31:0] hdmi_dma_data_int = 'd0; reg [31:0] hdmi_dma_data_int = 'd0;
reg hdmi_sof_422 = 'd0; reg hdmi_sof_422 = 'd0;
reg hdmi_de_422 = 'd0; reg hdmi_de_422 = 'd0;
reg hdmi_de_422_cnt = 'd0;
reg [15:0] hdmi_data_422 = 'd0; reg [15:0] hdmi_data_422 = 'd0;
reg hdmi_sof_444 = 'd0; reg hdmi_sof_444 = 'd0;
reg hdmi_de_444 = 'd0; reg hdmi_de_444 = 'd0;
@ -171,6 +172,7 @@ module axi_hdmi_rx_core (
hdmi_dma_sof_int <= 1'd0; hdmi_dma_sof_int <= 1'd0;
hdmi_dma_de_int <= 1'd0; hdmi_dma_de_int <= 1'd0;
hdmi_dma_data_int <= 32'd0; hdmi_dma_data_int <= 32'd0;
hdmi_de_422_cnt <= 1'b0;
end else if (hdmi_csc_bypass == 1'b1) begin end else if (hdmi_csc_bypass == 1'b1) begin
if (hdmi_packed == 1'b0) begin if (hdmi_packed == 1'b0) begin
hdmi_dma_sof_int <= hdmi_sof_422; hdmi_dma_sof_int <= hdmi_sof_422;
@ -178,9 +180,12 @@ module axi_hdmi_rx_core (
hdmi_dma_data_int <= {16'd0, hdmi_data_422}; hdmi_dma_data_int <= {16'd0, hdmi_data_422};
end else begin end else begin
hdmi_dma_sof_int <= hdmi_sof_422; hdmi_dma_sof_int <= hdmi_sof_422;
hdmi_dma_de_int <= ~hdmi_dma_de_int & hdmi_de_422; hdmi_dma_de_int <= hdmi_de_422_cnt && hdmi_de_422;
if (hdmi_de_422) begin
hdmi_de_422_cnt <= hdmi_de_422_cnt + 1'b1;
hdmi_dma_data_int <= {hdmi_data_422, hdmi_dma_data_int[31:16]}; hdmi_dma_data_int <= {hdmi_data_422, hdmi_dma_data_int[31:16]};
end end
end
end else begin end else begin
if (hdmi_packed == 1'b0) begin if (hdmi_packed == 1'b0) begin
hdmi_dma_sof_int <= hdmi_sof_444; hdmi_dma_sof_int <= hdmi_sof_444;