serial: Rename driver vcth to vct to support other board variants

Moved driver vcth.c to vct.c to better reflect the VCT board series.
This driver is now used by the VCT platforms:

vct_premium
vct_platinum
vct_platinumsvc

Signed-off-by: Stefan Roese <sr@denx.de>

1 files changed, 125 insertions, 0 deletions

diff --git a/drivers/serial/vct.c b/drivers/serial/vct.c
new file mode 100755
index 0000000..556c114
--- /dev/null
+++ b/drivers/serial/vct.c
@@ -0,0 +1,125 @@
+/*
+ * (C) Copyright 2008 Stefan Roese <sr@denx.de>, DENX Software Engineering
+ *
+ * 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
+ */
+
+#include <config.h>
+#include <common.h>
+#include <asm/io.h>
+
+#ifdef CONFIG_VCT_PLATINUMAVC
+#define UART_1_BASE		0xBDC30000
+#else
+#define UART_1_BASE		0xBF89C000
+#endif
+
+#define	UART_RBR_OFF		0x00	/* receiver buffer reg		*/
+#define	UART_THR_OFF		0x00	/* transmit holding  reg	*/
+#define	UART_DLL_OFF		0x00	/* divisor latch low reg	*/
+#define	UART_IER_OFF		0x04	/* interrupt enable reg		*/
+#define	UART_DLH_OFF		0x04	/* receiver buffer reg		*/
+#define	UART_FCR_OFF		0x08	/* fifo control register	*/
+#define	UART_LCR_OFF		0x0c	/* line control register	*/
+#define	UART_MCR_OFF		0x10	/* modem control register	*/
+#define	UART_LSR_OFF		0x14	/* line status register		*/
+#define	UART_MSR_OFF		0x18	/* modem status register	*/
+#define	UART_SCR_OFF		0x1c	/* scratch pad register		*/
+
+#define UART_RCV_DATA_RDY	0x01	/* Data Received		*/
+#define UART_XMT_HOLD_EMPTY	0x20
+#define UART_TRANSMIT_EMPTY	0x40
+
+/* 7 bit on line control reg. enalbing rw to dll and dlh */
+#define UART_LCR_DLAB		0x0080
+
+#define UART___9600_BDR		0x84
+#define UART__19200_BDR		0x42
+#define UART_115200_BDR		0x08
+
+#define UART_DIS_ALL_INTER	0x00	/* disable all interrupts	*/
+
+#define UART_5DATA_BITS		0x0000	/*   5 [bits]  1.5 bits   2	*/
+#define UART_6DATA_BITS		0x0001	/*   6 [bits]  1   bits   2	*/
+#define UART_7DATA_BITS		0x0002	/*   7 [bits]  1   bits   2	*/
+#define UART_8DATA_BITS		0x0003	/*   8 [bits]  1   bits   2	*/
+
+static void vct_uart_set_baud_rate(u32 address, u32 dh, u32 dl)
+{
+	u32 val = __raw_readl(UART_1_BASE + UART_LCR_OFF);
+
+	/* set 7 bit on 1 */
+	val |= UART_LCR_DLAB;
+	__raw_writel(val, UART_1_BASE + UART_LCR_OFF);
+
+	__raw_writel(dl, UART_1_BASE + UART_DLL_OFF);
+	__raw_writel(dh, UART_1_BASE + UART_DLH_OFF);
+
+	/* set 7 bit on 0 */
+	val &= ~UART_LCR_DLAB;
+	__raw_writel(val, UART_1_BASE + UART_LCR_OFF);
+
+	return;
+}
+
+int serial_init(void)
+{
+	__raw_writel(UART_DIS_ALL_INTER, UART_1_BASE + UART_IER_OFF);
+	vct_uart_set_baud_rate(UART_1_BASE, 0, UART_115200_BDR);
+	__raw_writel(UART_8DATA_BITS, UART_1_BASE + UART_LCR_OFF);
+
+	return 0;
+}
+
+void serial_setbrg(void)
+{
+	/*
+	 * Baudrate change not supported currently, fixed to 115200 baud
+	 */
+}
+
+void serial_putc(const char c)
+{
+	if (c == '\n')
+		serial_putc('\r');
+
+	while (!(UART_XMT_HOLD_EMPTY & __raw_readl(UART_1_BASE + UART_LSR_OFF)))
+		;
+
+	__raw_writel(c, UART_1_BASE + UART_THR_OFF);
+}
+
+void serial_puts(const char *s)
+{
+	while (*s)
+		serial_putc(*s++);
+}
+
+int serial_getc(void)
+{
+	while (!(UART_RCV_DATA_RDY & __raw_readl(UART_1_BASE + UART_LSR_OFF)))
+		;
+
+	return __raw_readl(UART_1_BASE + UART_RBR_OFF) & 0xff;
+}
+
+int serial_tstc(void)
+{
+	if (!(UART_RCV_DATA_RDY & __raw_readl(UART_1_BASE + UART_LSR_OFF)))
+		return 0;
+
+	return 1;
+}