lh7a40x: move serial driver to drivers/serial
Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
diff --git a/drivers/serial/Makefile b/drivers/serial/Makefile
index 4a35703..ab5d565 100644
--- a/drivers/serial/Makefile
+++ b/drivers/serial/Makefile
@@ -39,6 +39,7 @@
COBJS-$(CONFIG_IXP_SERIAL) += serial_ixp.o
COBJS-$(CONFIG_KS8695_SERIAL) += serial_ks8695.o
COBJS-$(CONFIG_LPC2292_SERIAL) += serial_lpc2292.o
+COBJS-$(CONFIG_LH7A40X_SERIAL) += serial_lh7a40x.o
COBJS-$(CONFIG_MAX3100_SERIAL) += serial_max3100.o
COBJS-$(CONFIG_MX31_UART) += serial_mx31.o
COBJS-$(CONFIG_NETARM_SERIAL) += serial_netarm.o
diff --git a/drivers/serial/serial_lh7a40x.c b/drivers/serial/serial_lh7a40x.c
new file mode 100644
index 0000000..4767489
--- /dev/null
+++ b/drivers/serial/serial_lh7a40x.c
@@ -0,0 +1,184 @@
+/*
+ * (C) Copyright 2002
+ * Gary Jennejohn, DENX Software Engineering, <garyj@denx.de>
+ *
+ * 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 <common.h>
+#include <lh7a40x.h>
+
+DECLARE_GLOBAL_DATA_PTR;
+
+#if defined(CONFIG_CONSOLE_UART1)
+# define UART_CONSOLE 1
+#elif defined(CONFIG_CONSOLE_UART2)
+# define UART_CONSOLE 2
+#elif defined(CONFIG_CONSOLE_UART3)
+# define UART_CONSOLE 3
+#else
+# error "No console configured ... "
+#endif
+
+void serial_setbrg (void)
+{
+ lh7a40x_uart_t* uart = LH7A40X_UART_PTR(UART_CONSOLE);
+ int i;
+ unsigned int reg = 0;
+
+ /*
+ * userguide 15.1.2.4
+ *
+ * BAUDDIV is (UART_REF_FREQ/(16 X BAUD))-1
+ *
+ * UART_REF_FREQ = external system clock input / 2 (Hz)
+ * BAUD is desired baudrate (bits/s)
+ *
+ * NOTE: we add (divisor/2) to numerator to round for
+ * more precision
+ */
+ reg = (((get_PLLCLK()/2) + ((16*gd->baudrate)/2)) / (16 * gd->baudrate)) - 1;
+ uart->brcon = reg;
+
+ for (i = 0; i < 100; i++);
+}
+
+/*
+ * Initialise the serial port with the given baudrate. The settings
+ * are always 8 data bits, no parity, 1 stop bit, no start bits.
+ *
+ */
+int serial_init (void)
+{
+ lh7a40x_uart_t* uart = LH7A40X_UART_PTR(UART_CONSOLE);
+
+ /* UART must be enabled before writing to any config registers */
+ uart->con |= (UART_EN);
+
+#ifdef CONFIG_CONSOLE_UART1
+ /* infrared disabled */
+ uart->con |= UART_SIRD;
+#endif
+ /* loopback disabled */
+ uart->con &= ~(UART_LBE);
+
+ /* modem lines and tx/rx polarities */
+ uart->con &= ~(UART_MXP | UART_TXP | UART_RXP);
+
+ /* FIFO enable, N81 */
+ uart->fcon = (UART_WLEN_8 | UART_FEN | UART_STP2_1);
+
+ /* set baudrate */
+ serial_setbrg ();
+
+ /* enable rx interrupt */
+ uart->inten |= UART_RI;
+
+ return (0);
+}
+
+/*
+ * Read a single byte from the serial port. Returns 1 on success, 0
+ * otherwise. When the function is succesfull, the character read is
+ * written into its argument c.
+ */
+int serial_getc (void)
+{
+ lh7a40x_uart_t* uart = LH7A40X_UART_PTR(UART_CONSOLE);
+
+ /* wait for character to arrive */
+ while (uart->status & UART_RXFE);
+
+ return(uart->data & 0xff);
+}
+
+#ifdef CONFIG_HWFLOW
+static int hwflow = 0; /* turned off by default */
+int hwflow_onoff(int on)
+{
+ switch(on) {
+ case 0:
+ default:
+ break; /* return current */
+ case 1:
+ hwflow = 1; /* turn on */
+ break;
+ case -1:
+ hwflow = 0; /* turn off */
+ break;
+ }
+ return hwflow;
+}
+#endif
+
+#ifdef CONFIG_MODEM_SUPPORT
+static int be_quiet = 0;
+void disable_putc(void)
+{
+ be_quiet = 1;
+}
+
+void enable_putc(void)
+{
+ be_quiet = 0;
+}
+#endif
+
+
+/*
+ * Output a single byte to the serial port.
+ */
+void serial_putc (const char c)
+{
+ lh7a40x_uart_t* uart = LH7A40X_UART_PTR(UART_CONSOLE);
+
+#ifdef CONFIG_MODEM_SUPPORT
+ if (be_quiet)
+ return;
+#endif
+
+ /* wait for room in the tx FIFO */
+ while (!(uart->status & UART_TXFE));
+
+#ifdef CONFIG_HWFLOW
+ /* Wait for CTS up */
+ while(hwflow && !(uart->status & UART_CTS));
+#endif
+
+ uart->data = c;
+
+ /* If \n, also do \r */
+ if (c == '\n')
+ serial_putc ('\r');
+}
+
+/*
+ * Test whether a character is in the RX buffer
+ */
+int serial_tstc (void)
+{
+ lh7a40x_uart_t* uart = LH7A40X_UART_PTR(UART_CONSOLE);
+
+ return(!(uart->status & UART_RXFE));
+}
+
+void
+serial_puts (const char *s)
+{
+ while (*s) {
+ serial_putc (*s++);
+ }
+}