matrox/engine/mga_maventv.c

101 		*ht_new = target.timing.h_total + h_total_mod + 2;
105 		req_pclks_field = *ht_new * target.timing.v_total;
146 					if (calc_pclks_field < ((*ht_new * (target.timing.v_total - 1)) + 2)) continue;
149 					*ht_last_line = calc_pclks_field - (*ht_new * (target.timing.v_total - 1));
211 		best[3] = target.timing.h_total;
212 		best[4] = target.timing.h_total;
259 	/* Notes about timing:
261 	 * all horizontal timing is measured in pixelclock periods;
262 	 * all? vertical timing is measured in field? lines.  */
265 	 * <= G400MAX cards have a fixed 27Mhz(?) clock for TV timing register values,
618 	/* colorburst is 'superimposed' on the above timing */
635 	/* colorburst is 'superimposed' on the above timing */
653 	/* used in G450/G550 to calculate TVout signal timing dependant on pixelclock;
728 				if ((tv_target.timing.h_display < 704) && ((tv_target.flags & TV_BITS) == TV_PAL))
739 				tv_target.timing.h_total = (tv_target.timing.h_display / uscan_fact);
741 				tv_target.timing.h_total &= ~0x0007;
743 				tv_target.timing.v_total = (tv_target.timing.v_display / uscan_fact);
748 					diff = tv_target.timing.v_total - tv_target.timing.v_display;
749 					tv_target.timing.v_sync_start = tv_target.timing.v_display + ((diff * 7) / 20);
752 					tv_target.timing.v_sync_end = tv_target.timing.v_total;
756 					diff = tv_target.timing.v_total - tv_target.timing.v_display;
757 					tv_target.timing.v_sync_start = tv_target.timing.v_display + ((diff * 5) / 20);
760 					tv_target.timing.v_sync_end = tv_target.timing.v_total;
766 					(((tv_target.flags & TV_BITS) << (14 - 9)) | tv_target.timing.h_display);
776 					tv_target.timing.h_total = 696;
786 					tv_target.timing.h_total = 784;
792 					tv_target.timing.h_total = 832;
796 					tv_target.timing.h_total = 784;
807 					tv_target.timing.v_total = m_timing.v_total;
811 					diff = 576 - tv_target.timing.v_display;
815 						tv_target.timing.v_display = 576;
819 					tv_target.timing.v_sync_start = tv_target.timing.v_display + (diff / 2);
823 					tv_target.timing.v_sync_end = tv_target.timing.v_total;
828 					tv_target.timing.v_total = m_timing.v_total;
831 					if (tweak) tv_target.timing.v_total += 32;
835 					diff = 480 - tv_target.timing.v_display;
839 						tv_target.timing.v_display = 480;
843 					tv_target.timing.v_sync_start = tv_target.timing.v_display + (diff / 2);
846 					if (tweak) tv_target.timing.v_sync_start += 9;
850 					tv_target.timing.v_sync_end = tv_target.timing.v_total;
857 				diff = tv_target.timing.h_total - tv_target.timing.h_display;
860 					tv_target.timing.h_sync_start = tv_target.timing.h_display - 16 + (diff / 2);
862 					tv_target.timing.h_sync_start &= ~0x0007;
863 					tv_target.timing.h_sync_end = tv_target.timing.h_sync_start + 32;
867 					tv_target.timing.h_sync_start = tv_target.timing.h_display - 0 + (diff / 2);
869 					tv_target.timing.h_sync_start &= ~0x0007;
870 					tv_target.timing.h_sync_end = tv_target.timing.h_sync_start + 16;
875 				diff = tv_target.timing.h_total - tv_target.timing.h_display;
876 				tv_target.timing.h_sync_start = tv_target.timing.h_display - 16 + (diff / 2);
879 				if (tweak) tv_target.timing.h_sync_start -= 16;
881 				tv_target.timing.h_sync_start &= ~0x0007;
882 				tv_target.timing.h_sync_end = tv_target.timing.h_sync_start + 16;
887 		if ((tv_target.timing.h_display >= 1000) && (((tv_target.flags & TV_BITS) != TV_PAL)))
916 						(tv_target.timing.h_sync_end - tv_target.timing.h_sync_start)));
918 //		slen = tv_target.timing.h_sync_end - tv_target.timing.h_sync_start;
919 //		hcrt = tv_target.timing.h_total - slen - si->crtc_delay;
920 //		if (ht_last_line < tv_target.timing.h_total) hcrt += ht_last_line;
921 //		if (hcrt > tv_target.timing.h_total) hcrt -= tv_target.timing.h_total;
922 //		if (hcrt + 2 > tv_target.timing.h_total) hcrt = 0;	/* or issue warning? */
929 		MAVWW(HSYNCLENL, (tv_target.timing.h_total - tv_target.timing.h_sync_end));
932 		MAVWW(VTOTALL, (tv_target.timing.v_total - 1));
935 		MAVWW(VVIDRSTL, (tv_target.timing.v_total - 2));
941 		MAVWW(VSYNCLENL, (tv_target.timing.v_sync_end - tv_target.timing.v_sync_start - 1));
943 		//MAVWW(VSYNCLENL, (tv_target.timing.v_total - tv_target.timing.v_sync_start - 1));
948 		//MAVWW(VDISPLAYL, (tv_target.timing.v_total - 1));
966 			h_scale_tv = (736 << 7) / tv_target.timing.h_total;//should be PLL corrected
988 				(((tv_target.timing.h_total - tv_target.timing.h_sync_end)	/* is left margin */
989 				 + tv_target.timing.h_display - 8)
1012 			ib_min_length = ((tv_target.timing.h_total - tv_target.timing.h_sync_end) +
1013 				 			  tv_target.timing.h_display + 4);
1056 				in_clocks = (tv_target.timing.v_total - 1) * (ht_new + 2) +	ht_last_line + 2;
1073 				((tv_target.timing.v_sync_end - tv_target.timing.v_sync_start) 	/* is sync length */
1074 				 + (tv_target.timing.v_total - tv_target.timing.v_sync_end) 	/* is upper margin */
1075 				 + tv_target.timing.v_display)
1139 			tv_target.timing.v_total = m_timing.v_total;
1143 			diff = 576 - tv_target.timing.v_display;
1147 				tv_target.timing.v_display = 576;
1151 			tv_target.timing.v_sync_start = tv_target.timing.v_display + 1 + (diff / 2);
1152 			tv_target.timing.v_sync_end = tv_target.timing.v_sync_start + 1;
1159 			tv_target.timing.v_total = m_timing.v_total;
1163 			diff = 480 - tv_target.timing.v_display;
1167 				tv_target.timing.v_display = 480;
1171 			tv_target.timing.v_sync_start = tv_target.timing.v_display + 1 + (diff / 2);
1172 			tv_target.timing.v_sync_end = tv_target.timing.v_sync_start + 1;
1188 			h_display = (((tv_target.timing.h_display << 1) + 3) & ~0x03);
1198 			tv_target.timing.pixel_clock =
1203 			tv_target.timing.h_display = ((h_display >> 1) & ~0x07);
1204 			tv_target.timing.h_sync_start = tv_target.timing.h_display + 8;
1208 			tv_target.timing.pixel_clock = (calc_pclk * 1000);
1216 			pix_period = (1000000000 / ((float)tv_target.timing.pixel_clock)) + 0.5;
1224 			 * This is here so we can see the wanted and calc'd timing difference. */
1283 			 * h_total to adhere to the CRTC2 timing restrictions. */
1288 			 * 'trick' will decay TVout timing! (timing is nolonger official) */
1309 						 *  because of the illegal h_total timing we create here.) */
1334 			tv_target.timing.h_sync_end = (h_total & ~0x07) - 8;
1336 			tv_target.timing.h_total = h_total;
1357 			upper = (m_timing.v_total - tv_target.timing.v_sync_end) >> 1;
1406 	/* setup CRTC timing */