fbdev/sis/sis_main.c

82 static int	sisfb_do_set_var(struct fb_var_screeninfo *var, int isactive,
1052 sisfb_get_cmap_len(const struct fb_var_screeninfo *var)
1054 	return (var->bits_per_pixel == 8) ? 256 : 16;
1084 sisfb_calc_maxyres(struct sis_video_info *ivideo, struct fb_var_screeninfo *var)
1086 	int maxyres = ivideo->sisfb_mem / (var->xres_virtual * (var->bits_per_pixel >> 3));
1094 sisfb_calc_pitch(struct sis_video_info *ivideo, struct fb_var_screeninfo *var)
1096 	ivideo->video_linelength = var->xres_virtual * (var->bits_per_pixel >> 3);
1099 		if((var->vmode & FB_VMODE_MASK) == FB_VMODE_INTERLACED) {
1129 sisfb_bpp_to_var(struct sis_video_info *ivideo, struct fb_var_screeninfo *var)
1131 	ivideo->video_cmap_len = sisfb_get_cmap_len(var);
1133 	switch(var->bits_per_pixel) {
1135 		var->red.offset = var->green.offset = var->blue.offset = 0;
1136 		var->red.length = var->green.length = var->blue.length = 8;
1139 		var->red.offset = 11;
1140 		var->red.length = 5;
1141 		var->green.offset = 5;
1142 		var->green.length = 6;
1143 		var->blue.offset = 0;
1144 		var->blue.length = 5;
1145 		var->transp.offset = 0;
1146 		var->transp.length = 0;
1149 		var->red.offset = 16;
1150 		var->red.length = 8;
1151 		var->green.offset = 8;
1152 		var->green.length = 8;
1153 		var->blue.offset = 0;
1154 		var->blue.length = 8;
1155 		var->transp.offset = 24;
1156 		var->transp.length = 8;
1187 sisfb_do_set_var(struct fb_var_screeninfo *var, int isactive, struct fb_info *info)
1196 	htotal = var->left_margin + var->xres + var->right_margin + var->hsync_len;
1198 	vtotal = var->upper_margin + var->lower_margin + var->vsync_len;
1200 	pixclock = var->pixclock;
1202 	if((var->vmode & FB_VMODE_MASK) == FB_VMODE_NONINTERLACED) {
1203 		vtotal += var->yres;
1205 	} else if((var->vmode & FB_VMODE_MASK) == FB_VMODE_DOUBLE) {
1206 		vtotal += var->yres;
1208 	} else if((var->vmode & FB_VMODE_MASK) == FB_VMODE_INTERLACED) {
1209 		vtotal += var->yres;
1211 	} else 	vtotal += var->yres;
1214 		DPRINTK("sisfb: Invalid 'var' information\n");
1230 	       (sisbios_mode[ivideo->sisfb_mode_idx].xres <= var->xres) ) {
1231 		if( (sisbios_mode[ivideo->sisfb_mode_idx].xres == var->xres) &&
1232 		    (sisbios_mode[ivideo->sisfb_mode_idx].yres == var->yres) &&
1233 		    (sisbios_mode[ivideo->sisfb_mode_idx].bpp == var->bits_per_pixel)) {
1249 		printk(KERN_ERR "sisfb: Mode %dx%dx%d not supported\n", var->xres,
1250 		       var->yres, var->bits_per_pixel);
1269 		if(var->accel_flags & FB_ACCELF_TEXT) {
1277 		if(var->accel_flags & FB_ACCELF_TEXT) ivideo->accel = -1;
1288 		sisfb_calc_pitch(ivideo, var);
1299 		ivideo->current_pixclock = var->pixclock;
1336 	      struct fb_var_screeninfo *var)
1338 	ivideo->current_base = var->yoffset * info->var.xres_virtual
1339 			     + var->xoffset;
1342 	switch (info->var.bits_per_pixel) {
1380 	if(regno >= sisfb_get_cmap_len(&info->var))
1383 	switch(info->var.bits_per_pixel) {
1424 	if((err = sisfb_do_set_var(&info->var, 1, info)))
1433 sisfb_check_var(struct fb_var_screeninfo *var, struct fb_info *info)
1443 	htotal = var->left_margin + var->xres + var->right_margin + var->hsync_len;
1445 	vtotal = var->upper_margin + var->lower_margin + var->vsync_len;
1447 	if (!var->pixclock)
1449 	pixclock = var->pixclock;
1451 	if((var->vmode & FB_VMODE_MASK) == FB_VMODE_NONINTERLACED) {
1452 		vtotal += var->yres;
1454 	} else if((var->vmode & FB_VMODE_MASK) == FB_VMODE_DOUBLE) {
1455 		vtotal += var->yres;
1457 	} else if((var->vmode & FB_VMODE_MASK) == FB_VMODE_INTERLACED) {
1458 		vtotal += var->yres;
1461 		vtotal += var->yres;
1469 	       (sisbios_mode[search_idx].xres <= var->xres) ) {
1470 		if( (sisbios_mode[search_idx].xres == var->xres) &&
1471 		    (sisbios_mode[search_idx].yres == var->yres) &&
1472 		    (sisbios_mode[search_idx].bpp == var->bits_per_pixel)) {
1486 		   if( (var->xres <= sisbios_mode[search_idx].xres) &&
1487 		       (var->yres <= sisbios_mode[search_idx].yres) &&
1488 		       (var->bits_per_pixel == sisbios_mode[search_idx].bpp) ) {
1501 				var->xres, var->yres, var->bits_per_pixel,
1504 				var->bits_per_pixel);
1505 			var->xres = sisbios_mode[search_idx].xres;
1506 			var->yres = sisbios_mode[search_idx].yres;
1510 				var->xres, var->yres, var->bits_per_pixel);
1517 	    (var->bits_per_pixel == 8) ) {
1530 		   (ivideo->current_pixclock == var->pixclock) ) {
1559 		var->pixclock = (u32) (1000000000 / sisfb_mode_rate_to_dclock(&ivideo->SiS_Pr,
1564 					myrateindex, var);
1565 		if((var->vmode & FB_VMODE_MASK) == FB_VMODE_DOUBLE) {
1566 			var->pixclock <<= 1;
1579 	sisfb_bpp_to_var(ivideo, var);
1581 	if(var->xres > var->xres_virtual)
1582 		var->xres_virtual = var->xres;
1585 		maxyres = sisfb_calc_maxyres(ivideo, var);
1587 			var->yres_virtual = maxyres;
1589 			if(var->yres_virtual > maxyres) {
1590 				var->yres_virtual = maxyres;
1593 		if(var->yres_virtual <= var->yres) {
1594 			var->yres_virtual = var->yres;
1597 		if(var->yres != var->yres_virtual) {
1598 			var->yres_virtual = var->yres;
1600 		var->xoffset = 0;
1601 		var->yoffset = 0;
1605 	if(var->xoffset > var->xres_virtual - var->xres) {
1606 		var->xoffset = var->xres_virtual - var->xres - 1;
1609 	if(var->yoffset > var->yres_virtual - var->yres) {
1610 		var->yoffset = var->yres_virtual - var->yres - 1;
1614 	var->red.msb_right =
1615 		var->green.msb_right =
1616 		var->blue.msb_right =
1617 		var->transp.offset =
1618 		var->transp.length =
1619 		var->transp.msb_right = 0;
1625 sisfb_pan_display(struct fb_var_screeninfo *var, struct fb_info* info)
1630 	if (var->vmode & FB_VMODE_YWRAP)
1633 	if (var->xoffset + info->var.xres > info->var.xres_virtual ||
1634 	    var->yoffset + info->var.yres > info->var.yres_virtual)
1637 	err = sisfb_pan_var(ivideo, info, var);
1641 	info->var.xoffset = var->xoffset;
1642 	info->var.yoffset = var->yoffset;
6255 	 * submitted var has its acceleration flags set).
6404 		/* Set up the default var according to chosen default display mode */
6448 		sis_fb_info->var = ivideo->default_var;