X-Git-Url: https://git.sur5r.net/?a=blobdiff_plain;f=drivers%2Fserial%2Fserial_ns16550.c;h=632da4cf70bb93c15c2a84a93815b6b6078c06c4;hb=64f41212d880f3d00c6994d973aadeec5bda1b65;hp=5fb38410a8420f4d07740eba25c1b165aea5ebf9;hpb=96708a06052e49489b46fb91bf83f3f7d20430b8;p=u-boot

diff --git a/drivers/serial/serial_ns16550.c b/drivers/serial/serial_ns16550.c
index 5fb38410a8..632da4cf70 100644
--- a/drivers/serial/serial_ns16550.c
+++ b/drivers/serial/serial_ns16550.c
@@ -2,23 +2,7 @@
  * (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>
@@ -31,6 +15,8 @@
 
 #include <serial.h>
 
+#ifndef CONFIG_NS16550_MIN_FUNCTIONS
+
 DECLARE_GLOBAL_DATA_PTR;
 
 #if !defined(CONFIG_CONS_INDEX)
@@ -92,21 +78,34 @@ static NS16550_t serial_ports[6] = {
 
 /* Multi serial device functions */
 #define DECLARE_ESERIAL_FUNCTIONS(port) \
-    int  eserial##port##_init (void) {\
-	int clock_divisor; \
-	clock_divisor = calc_divisor(serial_ports[port-1]); \
-	NS16550_init(serial_ports[port-1], clock_divisor); \
-	return(0);}\
-    void eserial##port##_setbrg (void) {\
-	serial_setbrg_dev(port);}\
-    int  eserial##port##_getc (void) {\
-	return serial_getc_dev(port);}\
-    int  eserial##port##_tstc (void) {\
-	return serial_tstc_dev(port);}\
-    void eserial##port##_putc (const char c) {\
-	serial_putc_dev(port, c);}\
-    void eserial##port##_puts (const char *s) {\
-	serial_puts_dev(port, s);}
+	static int  eserial##port##_init(void) \
+	{ \
+		int clock_divisor; \
+		clock_divisor = ns16550_calc_divisor(serial_ports[port-1], \
+				CONFIG_SYS_NS16550_CLK, gd->baudrate); \
+		NS16550_init(serial_ports[port-1], clock_divisor); \
+		return 0 ; \
+	} \
+	static void eserial##port##_setbrg(void) \
+	{ \
+		serial_setbrg_dev(port); \
+	} \
+	static int  eserial##port##_getc(void) \
+	{ \
+		return serial_getc_dev(port); \
+	} \
+	static int  eserial##port##_tstc(void) \
+	{ \
+		return serial_tstc_dev(port); \
+	} \
+	static void eserial##port##_putc(const char c) \
+	{ \
+		serial_putc_dev(port, c); \
+	} \
+	static void eserial##port##_puts(const char *s) \
+	{ \
+		serial_puts_dev(port, s); \
+	}
 
 /* Serial device descriptor */
 #define INIT_ESERIAL_STRUCTURE(port, __name) {	\
@@ -120,38 +119,6 @@ static NS16550_t serial_ports[6] = {
 	.puts	= eserial##port##_puts,		\
 }
 
-static int calc_divisor (NS16550_t port)
-{
-#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 = OSC_12M_SEL;	/* enable 6.5 * divisor */
-		return (1);				/* return 1 for base divisor */
-	}
-	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);
-}
-
 void
 _serial_putc(const char c,const int port)
 {
@@ -193,7 +160,8 @@ _serial_setbrg (const int port)
 {
 	int clock_divisor;
 
-	clock_divisor = calc_divisor(PORT);
+	clock_divisor = ns16550_calc_divisor(PORT, CONFIG_SYS_NS16550_CLK,
+					     gd->baudrate);
 	NS16550_reinit(PORT, clock_divisor);
 }
 
@@ -233,24 +201,36 @@ serial_setbrg_dev(unsigned int dev_index)
 	_serial_setbrg(dev_index);
 }
 
+#if defined(CONFIG_SYS_NS16550_COM1)
 DECLARE_ESERIAL_FUNCTIONS(1);
 struct serial_device eserial1_device =
 	INIT_ESERIAL_STRUCTURE(1, "eserial0");
+#endif
+#if defined(CONFIG_SYS_NS16550_COM2)
 DECLARE_ESERIAL_FUNCTIONS(2);
 struct serial_device eserial2_device =
 	INIT_ESERIAL_STRUCTURE(2, "eserial1");
+#endif
+#if defined(CONFIG_SYS_NS16550_COM3)
 DECLARE_ESERIAL_FUNCTIONS(3);
 struct serial_device eserial3_device =
 	INIT_ESERIAL_STRUCTURE(3, "eserial2");
+#endif
+#if defined(CONFIG_SYS_NS16550_COM4)
 DECLARE_ESERIAL_FUNCTIONS(4);
 struct serial_device eserial4_device =
 	INIT_ESERIAL_STRUCTURE(4, "eserial3");
+#endif
+#if defined(CONFIG_SYS_NS16550_COM5)
 DECLARE_ESERIAL_FUNCTIONS(5);
 struct serial_device eserial5_device =
 	INIT_ESERIAL_STRUCTURE(5, "eserial4");
+#endif
+#if defined(CONFIG_SYS_NS16550_COM6)
 DECLARE_ESERIAL_FUNCTIONS(6);
 struct serial_device eserial6_device =
 	INIT_ESERIAL_STRUCTURE(6, "eserial5");
+#endif
 
 __weak struct serial_device *default_serial_console(void)
 {
@@ -292,3 +272,5 @@ void ns16550_serial_initialize(void)
 	serial_register(&eserial6_device);
 #endif
 }
+
+#endif /* !CONFIG_NS16550_MIN_FUNCTIONS */