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tvp7002: fix occasional sync locking issue and expand BW selection

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marqs committed 2024-07-09 22:05:55 +03:00
1 parent 95724c2481
commit dae7b0b250
3 files changed
+13 -5
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software/sys_controller/tvp7002/tvp7002.c
+7 -1
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@@ -306,6 +306,8 @@ void tvp_setup_hpll(alt_u16 h_samplerate, alt_u16 pixs_per_line, alt_u16 refclks
cp_current = (40*Kvco[vco_range]+pixs_per_line/2) / pixs_per_line; //"+pixs_per_line/2" for fast rounding
if (cp_current > 6)
cp_current = 6;
else if (cp_current == 0)
cp_current = 1;
printf("VCO range: %s\nCPC: %u\n", Kvco_str[vco_range], cp_current);
tvp_writereg(TVP_HPLLCTRL, ((vco_range << 6) | (cp_current << 3)));
@@ -375,11 +377,15 @@ void tvp_set_alcfilt(alt_u8 nsv, alt_u8 nsh) {
tvp_writereg(TVP_ALCFILT, (nsv<<3)|nsh);
}
void tvp_source_setup(video_type type, alt_u16 h_samplerate, alt_u16 pixs_per_line, alt_u16 refclks_per_line, alt_u8 plldivby2, alt_u8 h_synclen_px, alt_8 clamp_user_offset)
void tvp_source_setup(video_type type, alt_u16 h_samplerate, alt_u16 pixs_per_line, alt_u16 refclks_per_line, alt_u8 plldivby2, alt_u8 h_synclen_px, alt_8 clamp_user_offset, alt_u8 vmode_changed)
{
// Due to short MVS width, clamp reference starts prematurely (at the end of MVS window). Adjust offset so that reference moves back to hsync trailing edge.
alt_u8 clamp_ref_offset = h_synclen_px - (((30*h_samplerate)/refclks_per_line)+5)/10;
// Reset sync processing if mode changed to avoid occasional wobbling issue
if (vmode_changed)
tvp_writereg(TVP_MISCCTRL4, tvp_readreg(TVP_MISCCTRL4) | (1<<7));
// Clamp and ALC
tvp_set_clamp_alc(type, clamp_ref_offset, clamp_user_offset, 1);
software/sys_controller/tvp7002/tvp7002.h
+1 -1
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@@ -114,7 +114,7 @@ void tvp_set_sog_thold(alt_u8 val);
void tvp_set_alcfilt(alt_u8 nsv, alt_u8 nsh);
void tvp_source_setup(video_type type, alt_u16 h_samplerate, alt_u16 pixs_per_line, alt_u16 refclks_per_line, alt_u8 plldivby2, alt_u8 h_synclen_px, alt_8 clamp_user_offset);
void tvp_source_setup(video_type type, alt_u16 h_samplerate, alt_u16 pixs_per_line, alt_u16 refclks_per_line, alt_u8 plldivby2, alt_u8 h_synclen_px, alt_8 clamp_user_offset, alt_u8 vmode_changed);
void tvp_source_sel(tvp_input_t input, tvp_sync_input_t syncinput, video_format fmt);