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Increase max V. Backporch value from 63 to 236

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This change allows highly letterboxed content (e.g. the PSP's 480x272
picture in a 720x480 frame) to be "zoomed" to a full screen picture by
treating the letterbox as horizontal and vertical backporch.

Co-authored-by: Chris Lockfort <clockfort@gmail.com>
This commit is contained in:
Russell Harmon 2020-04-05 22:46:41 -07:00 committed by Russell Harmon
parent 0c55cc03bb
commit bab85e713b
3 changed files with 10 additions and 10 deletions
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4
ip/sc_config/inc/sc_config_regs.h
View File

@ -81,10 +81,10 @@ typedef union {
typedef union {
struct {
alt_u16 v_active:11;
alt_u8 v_backporch:6;
alt_u8 v_backporch:8;
alt_u8 v_synclen:3;
alt_u8 v_mask:6;
alt_u8 v_rsv:3;
alt_u8 v_rsv:1;
alt_u8 v_multmode:3;
} __attribute__((packed, __may_alias__));
alt_u32 data;

14
rtl/scanconverter.v
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@ -189,7 +189,7 @@ reg [2:0] pclk_5x_cnt;
reg [10:0] H_ACTIVE; //max. 2047
reg [9:0] H_AVIDSTART; //max. 1023
reg [10:0] V_ACTIVE; //max. 2047
reg [6:0] V_AVIDSTART; //max. 127
reg [7:0] V_AVIDSTART; //max. 255
reg [7:0] H_SYNCLEN;
reg [2:0] V_SYNCLEN;
reg [5:0] V_MASK;
@ -227,11 +227,11 @@ reg [7:0] V_AVIDMASK_START;
reg [10:0] V_AVIDMASK_STOP;
reg [11:0] LT_POS_TOPLEFT_BOX_H_STOP;
reg [10:0] LT_POS_TOPLEFT_BOX_V_STOP;
reg [11:0] LT_POS_TOPLEFT_BOX_V_STOP;
reg [11:0] LT_POS_CENTER_BOX_H_START;
reg [11:0] LT_POS_CENTER_BOX_H_STOP;
reg [10:0] LT_POS_CENTER_BOX_V_START;
reg [10:0] LT_POS_CENTER_BOX_V_STOP;
reg [11:0] LT_POS_CENTER_BOX_V_START;
reg [11:0] LT_POS_CENTER_BOX_V_STOP;
reg [11:0] LT_POS_BOTTOMRIGHT_H_START;
reg [10:0] LT_POS_BOTTOMRIGHT_V_START;
@ -905,12 +905,12 @@ begin
H_AVIDSTART <= h_config[19:11] + h_config[27:20]; // Horizontal sync+backporch length (0...1023)
H_ACTIVE <= h_config[10:0]; // Horizontal active length (0...2047)
V_SYNCLEN <= v_config[19:17]; // Vertical sync length (0...7)
V_AVIDSTART <= v_config[16:11] + v_config[19:17]; // Vertical sync+backporch length (0...127)
V_SYNCLEN <= v_config[21:19]; // Vertical sync length (0...7)
V_AVIDSTART <= v_config[18:11] + v_config[21:19]; // Vertical sync+backporch length (0...255)
V_ACTIVE <= v_config[10:0]; // Vertical active length (0...2047)
H_MASK <= h_config2[29:19];
V_MASK <= v_config[25:20];
V_MASK <= v_config[27:22];
// H_L5BORDER <= h_config[29] ? (11'd1920-h_config[10:0])/2 : (11'd1600-h_config[10:0])/2;
H_L5BORDER <= h_config[29] ? H_L5BORDER_1920_tmp[10:1] : H_L5BORDER_1600_tmp[10:1];

2
software/sys_controller/tvp7002/video_modes.h
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@ -36,7 +36,7 @@
#define V_SYNCLEN_MIN 1
#define V_SYNCLEN_MAX 7
#define V_BPORCH_MIN 1
#define V_BPORCH_MAX 63
#define V_BPORCH_MAX 236 // 255 - 12 for L5FMT_1920x1080 - 7 for V_SYNCLEN_MAX
#define V_ACTIVE_MIN 160
#define V_ACTIVE_MAX 1200