diff options
Diffstat (limited to 'src/drivers/xgi/common/vb_util.c')
-rw-r--r-- | src/drivers/xgi/common/vb_util.c | 67 |
1 files changed, 67 insertions, 0 deletions
diff --git a/src/drivers/xgi/common/vb_util.c b/src/drivers/xgi/common/vb_util.c new file mode 100644 index 0000000000..a705696638 --- /dev/null +++ b/src/drivers/xgi/common/vb_util.c @@ -0,0 +1,67 @@ +/* + * This file is part of the coreboot project. + * + * File taken from the Linux xgifb driver (v3.18.5) + * Coreboot-specific includes added at top + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; version 2 of the License. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA + */ + +#include "xgi_coreboot.h" + +#include "vgatypes.h" +#include "vb_util.h" + +void xgifb_reg_set(unsigned long port, u8 index, u8 data) +{ + outb(index, port); + outb(data, port + 1); +} + +u8 xgifb_reg_get(unsigned long port, u8 index) +{ + u8 data; + + outb(index, port); + data = inb(port + 1); + return data; +} + +void xgifb_reg_and_or(unsigned long port, u8 index, + unsigned data_and, unsigned data_or) +{ + u8 temp; + + temp = xgifb_reg_get(port, index); /* XGINew_Part1Port index 02 */ + temp = (temp & data_and) | data_or; + xgifb_reg_set(port, index, temp); +} + +void xgifb_reg_and(unsigned long port, u8 index, unsigned data_and) +{ + u8 temp; + + temp = xgifb_reg_get(port, index); /* XGINew_Part1Port index 02 */ + temp &= data_and; + xgifb_reg_set(port, index, temp); +} + +void xgifb_reg_or(unsigned long port, u8 index, unsigned data_or) +{ + u8 temp; + + temp = xgifb_reg_get(port, index); /* XGINew_Part1Port index 02 */ + temp |= data_or; + xgifb_reg_set(port, index, temp); +} |