From 2e5983d2ea5ff21406408c18c5b8fa12d4250908 Mon Sep 17 00:00:00 2001
From: wdenk <wdenk>
Date: Tue, 15 Jul 2003 20:04:06 +0000
Subject: Patches by Kshitij, 04 Jul 2003 - added support for arm925t cpu core
 - added support for TI OMAP 1510 Innovator Board

---
 drivers/ns16550.c |  7 +++++++
 drivers/serial.c  | 21 +++++++++++++++------
 2 files changed, 22 insertions(+), 6 deletions(-)

(limited to 'drivers')

diff --git a/drivers/ns16550.c b/drivers/ns16550.c
index 6f818d7..9344a0a 100644
--- a/drivers/ns16550.c
+++ b/drivers/ns16550.c
@@ -17,12 +17,19 @@
 void NS16550_init (NS16550_t com_port, int baud_divisor)
 {
 	com_port->ier = 0x00;
+#ifdef CONFIG_OMAP1510	
+	com_port->mdr1 = 0x7;   /* mode select reset TL16C750*/
+#endif    
 	com_port->lcr = LCR_BKSE | LCRVAL;
 	com_port->dll = baud_divisor & 0xff;
 	com_port->dlm = (baud_divisor >> 8) & 0xff;
 	com_port->lcr = LCRVAL;
 	com_port->mcr = MCRVAL;
 	com_port->fcr = FCRVAL;
+#ifdef CONFIG_OMAP1510
+	com_port->mdr1 = 0; /* select uart mode */
+#endif
+
 }
 
 void NS16550_reinit (NS16550_t com_port, int baud_divisor)
diff --git a/drivers/serial.c b/drivers/serial.c
index 36d0e6e..f28ad80 100644
--- a/drivers/serial.c
+++ b/drivers/serial.c
@@ -42,12 +42,22 @@ static NS16550_t console = (NS16550_t) CFG_NS16550_COM4;
 #error no valid console defined
 #endif
 
-int serial_init (void)
+static int calc_divisor (void)
 {
 	DECLARE_GLOBAL_DATA_PTR;
+#ifdef CONFIG_OMAP1510
+	/* If can't cleanly clock 115200 set div to 1 */
+	if ((CFG_NS16550_CLK == 12000000) && (gd->baudrate == 115200)) {
+		console->osc_12m_sel = OSC_12M_SEL;	/* enable 6.5 * divisor */
+		return (1);				/* return 1 for base divisor */
+	}
+#endif
+	return (CFG_NS16550_CLK / 16 / gd->baudrate);
+}
 
-	int clock_divisor = (CFG_NS16550_CLK + gd->baudrate * 8 )
-			  / (gd->baudrate * 16);
+int serial_init (void)
+{
+	int clock_divisor = calc_divisor();
 
 #ifdef CFG_NS87308
 	initialise_ns87308();
@@ -91,10 +101,9 @@ serial_tstc(void)
 void
 serial_setbrg (void)
 {
-	DECLARE_GLOBAL_DATA_PTR;
-
-	int clock_divisor = CFG_NS16550_CLK / 16 / gd->baudrate;
+	int clock_divisor;
 
+    clock_divisor = calc_divisor();
 	NS16550_reinit(console, clock_divisor);
 }
 
-- 
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