* (C) Copyright 2000
* Rob Taylor, Flying Pig Systems. robt@flyingpig.com.
*
- * See file CREDITS for list of people who contributed to this
- * project.
- *
- * 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; either version 2 of
- * the License, or (at your option) any later version.
- *
- * 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., 59 Temple Place, Suite 330, Boston,
- * MA 02111-1307 USA
+ * SPDX-License-Identifier: GPL-2.0+
*/
#include <common.h>
static int calc_divisor (NS16550_t port)
{
+ const unsigned int mode_x_div = 16;
+
#ifdef CONFIG_OMAP1510
/* If can't cleanly clock 115200 set div to 1 */
if ((CONFIG_SYS_NS16550_CLK == 12000000) && (gd->baudrate == 115200)) {
}
port->osc_12m_sel = 0; /* clear if previsouly set */
#endif
-#ifdef CONFIG_OMAP1610
- /* If can't cleanly clock 115200 set div to 1 */
- if ((CONFIG_SYS_NS16550_CLK == 48000000) && (gd->baudrate == 115200)) {
- return (26); /* return 26 for base divisor */
- }
-#endif
-
-#ifdef CONFIG_APTIX
-#define MODE_X_DIV 13
-#else
-#define MODE_X_DIV 16
-#endif
- /* Compute divisor value. Normally, we should simply return:
- * CONFIG_SYS_NS16550_CLK) / MODE_X_DIV / gd->baudrate
- * but we need to round that value by adding 0.5.
- * Rounding is especially important at high baud rates.
- */
- return (CONFIG_SYS_NS16550_CLK + (gd->baudrate * (MODE_X_DIV / 2))) /
- (MODE_X_DIV * gd->baudrate);
+ return DIV_ROUND_CLOSEST(CONFIG_SYS_NS16550_CLK,
+ mode_x_div * gd->baudrate);
}
void