284 static int gxt4500_var_to_par(struct fb_var_screeninfo *var,  in gxt4500_var_to_par()  argument
287 	if (var->xres + var->xoffset > var->xres_virtual ||  in gxt4500_var_to_par()
288 	    var->yres + var->yoffset > var->yres_virtual ||  in gxt4500_var_to_par()
289 	    var->xres_virtual > 4096)  in gxt4500_var_to_par()
291 	if ((var->vmode & FB_VMODE_MASK) != FB_VMODE_NONINTERLACED)  in gxt4500_var_to_par()
294 	if (calc_pll(var->pixclock, par) < 0)  in gxt4500_var_to_par()
297 	switch (var->bits_per_pixel) {  in gxt4500_var_to_par()
299 		if (var->transp.length)  in gxt4500_var_to_par()
308 		if (var->green.length == 5)  in gxt4500_var_to_par()
326 static void gxt4500_unpack_pixfmt(struct fb_var_screeninfo *var,  in gxt4500_unpack_pixfmt()  argument
329 	var->bits_per_pixel = pixsize[pixfmt] * 8;  in gxt4500_unpack_pixfmt()
330 	var->red = eightbits;  in gxt4500_unpack_pixfmt()
331 	var->green = eightbits;  in gxt4500_unpack_pixfmt()
332 	var->blue = eightbits;  in gxt4500_unpack_pixfmt()
333 	var->transp = nobits;  in gxt4500_unpack_pixfmt()
337 		var->red.length = 5;  in gxt4500_unpack_pixfmt()
338 		var->green.length = 6;  in gxt4500_unpack_pixfmt()
339 		var->blue.length = 5;  in gxt4500_unpack_pixfmt()
342 		var->red.length = 5;  in gxt4500_unpack_pixfmt()
343 		var->green.length = 5;  in gxt4500_unpack_pixfmt()
344 		var->blue.length = 5;  in gxt4500_unpack_pixfmt()
345 		var->transp.length = 1;  in gxt4500_unpack_pixfmt()
348 		var->transp.length = 8;  in gxt4500_unpack_pixfmt()
352 		var->blue.offset = 0;  in gxt4500_unpack_pixfmt()
353 		var->green.offset = var->blue.length;  in gxt4500_unpack_pixfmt()
354 		var->red.offset = var->green.offset + var->green.length;  in gxt4500_unpack_pixfmt()
355 		if (var->transp.length)  in gxt4500_unpack_pixfmt()
356 			var->transp.offset =  in gxt4500_unpack_pixfmt()
357 				var->red.offset + var->red.length;  in gxt4500_unpack_pixfmt()
361 static int gxt4500_check_var(struct fb_var_screeninfo *var,  in gxt4500_check_var()  argument
368 	err = gxt4500_var_to_par(var, &par);  in gxt4500_check_var()
370 		var->pixclock = calc_pixclock(&par);  in gxt4500_check_var()
371 		gxt4500_unpack_pixfmt(var, par.pixfmt);  in gxt4500_check_var()
379 	struct fb_var_screeninfo *var = &info->var;  in gxt4500_set_par()  local
388 	err = gxt4500_var_to_par(var, par);  in gxt4500_set_par()
430 	htot = var->xres + var->left_margin + var->right_margin +  in gxt4500_set_par()
431 		var->hsync_len;  in gxt4500_set_par()
433 	writereg(par, DTG_HORIZ_DISPLAY, var->xres - 1);  in gxt4500_set_par()
434 	writereg(par, DTG_HSYNC_START, var->xres + var->right_margin - 1);  in gxt4500_set_par()
436 		 var->xres + var->right_margin + var->hsync_len - 1);  in gxt4500_set_par()
438 		 var->xres + var->right_margin + var->hsync_len - 1);  in gxt4500_set_par()
440 		 var->yres + var->upper_margin + var->lower_margin +  in gxt4500_set_par()
441 		 var->vsync_len - 1);  in gxt4500_set_par()
442 	writereg(par, DTG_VERT_DISPLAY, var->yres - 1);  in gxt4500_set_par()
443 	writereg(par, DTG_VSYNC_START, var->yres + var->lower_margin - 1);  in gxt4500_set_par()
445 		 var->yres + var->lower_margin + var->vsync_len - 1);  in gxt4500_set_par()
446 	prefetch_pix = 3300000 / var->pixclock;  in gxt4500_set_par()
454 	if (var->xres_virtual > 2048) {  in gxt4500_set_par()
457 	} else if (var->xres_virtual > 1024) {  in gxt4500_set_par()
466 	wid_tiles = (var->xres_virtual + 63) >> 6;  in gxt4500_set_par()
473 	writereg(par, REFRESH_START, (var->xoffset << 16) | var->yoffset);  in gxt4500_set_par()
474 	writereg(par, REFRESH_SIZE, (var->xres << 16) | var->yres);  in gxt4500_set_par()
498 	if (var->sync & FB_SYNC_ON_GREEN)  in gxt4500_set_par()
500 	if (!(var->sync & FB_SYNC_HOR_HIGH_ACT))  in gxt4500_set_par()
502 	if (!(var->sync & FB_SYNC_VERT_HIGH_ACT))  in gxt4500_set_par()
549 static int gxt4500_pan_display(struct fb_var_screeninfo *var,  in gxt4500_pan_display()  argument
554 	if (var->xoffset & 7)  in gxt4500_pan_display()
556 	if (var->xoffset + info->var.xres > info->var.xres_virtual ||  in gxt4500_pan_display()
557 	    var->yoffset + info->var.yres > info->var.yres_virtual)  in gxt4500_pan_display()
560 	writereg(par, REFRESH_START, (var->xoffset << 16) | var->yoffset);  in gxt4500_pan_display()
620 	struct fb_var_screeninfo var;  in gxt4500_probe()  local
701 	if (!fb_find_mode(&var, info, mode_option, NULL, 0, &defaultmode, 8)) {  in gxt4500_probe()
705 	info->var = var;  in gxt4500_probe()