video/fbdev/amifb.c

185       - diwstrt_h:   Horizontal start of the visible window
215 	the first pixel is output, so diwstrt_h = ddfstrt + 64 + 4 if you want
216 	to display the first pixel on the line too. Increase diwstrt_h for
220       - diwstop_h = diwstrt_h + xres + 1. Because of the additional 1 this can
247 	ddfstrt = ((diwstrt_h - 4) & -fetchstart) - prefetch
248       - for horizontal panning decrease diwstrt_h
732 	u_short diwstrt_h;	/* vmode */
975 	 *	diwstrt_h    0   2047     1
1009 #define diwstrt2hw(diwstrt_h, diwstrt_v) \
1010 	(((diwstrt_v) << 7 & 0xff00) | ((diwstrt_h)>>2 & 0x00ff))
1013 #define diwhigh2hw(diwstrt_h, diwstrt_v, diwstop_h, diwstop_v) \
1015 	 ((diwstop_v)>>1 & 0x0700) | ((diwstrt_h)>>5 & 0x0020) | \
1016 	 ((diwstrt_h) << 3 & 0x0018) | ((diwstrt_v)>>9 & 0x0007))
1240 		par->diwstrt_h = par->diwstop_h - xres_n;
1271 			if (par->diwstrt_h < PAL_DIWSTRT_H) {
1272 				DPRINTK("diwstrt_h too low for pal\n");
1301 			if (par->diwstrt_h < NTSC_DIWSTRT_H) {
1302 				DPRINTK("diwstrt_h too low for ntsc\n");
1324 			if (par->diwstrt_h >= 1024 || par->diwstop_h < 1024 ||
1337 		par->diwstrt_h = par->diwstop_h - xres_n;
1338 		par->hbstop = par->diwstrt_h + 4;
1389 	fstrt = downx(fconst, par->diwstrt_h - 4) - fsize;
1399 	fstrt = downx(fconst, par->diwstrt_h - fconst + (1 << clk_shift) - 4) -
1406 	fstrt = downx(fconst, par->diwstrt_h - 4) - 64 - fconst;
1408 		    modx(fconst, downx(1 << clk_shift, par->diwstrt_h - 4)));
1611 	fstrt = par->diwstrt_h - (vshift << clk_shift) - 4;
2073 		hs = par->diwstrt_h + (mx << par->clk_shift) - 4;
2157 		h_end1 = par->diwstrt_h - 64;
2262 		(copl++)->l = CMOVE(diwstrt2hw(par->diwstrt_h, par->diwstrt_v + 1), diwstrt);
2264 		(cops++)->l = CMOVE(diwstrt2hw(par->diwstrt_h, par->diwstrt_v), diwstrt);
2267 			(copl++)->l = CMOVE(diwhigh2hw(par->diwstrt_h, par->diwstrt_v + 1,
2269 			(cops++)->l = CMOVE(diwhigh2hw(par->diwstrt_h, par->diwstrt_v,
2290 		(copl++)->l = CMOVE(diwstrt2hw(par->diwstrt_h, par->diwstrt_v), diwstrt);
2293 			(copl++)->l = CMOVE(diwhigh2hw(par->diwstrt_h, par->diwstrt_v,