s3c24x0: 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 705ae47..696d5fb 100644
--- a/drivers/serial/Makefile
+++ b/drivers/serial/Makefile
@@ -44,6 +44,7 @@
COBJS-$(CONFIG_PL010_SERIAL) += serial_pl01x.o
COBJS-$(CONFIG_PL011_SERIAL) += serial_pl01x.o
COBJS-$(CONFIG_SA1100_SERIAL) += serial_sa1100.o
+COBJS-$(CONFIG_S3C24X0_SERIAL) += serial_s3c24x0.o
COBJS-$(CONFIG_S3C44B0_SERIAL) += serial_s3c44b0.o
COBJS-$(CONFIG_XILINX_UARTLITE) += serial_xuartlite.o
COBJS-$(CONFIG_SCIF_CONSOLE) += serial_sh.o
diff --git a/drivers/serial/serial_s3c24x0.c b/drivers/serial/serial_s3c24x0.c
new file mode 100644
index 0000000..1b1b7a6
--- /dev/null
+++ b/drivers/serial/serial_s3c24x0.c
@@ -0,0 +1,300 @@
+/*
+ * (C) Copyright 2002
+ * Gary Jennejohn, DENX Software Engineering, <gj@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>
+#if defined(CONFIG_S3C2400) || defined(CONFIG_TRAB)
+#include <s3c2400.h>
+#elif defined(CONFIG_S3C2410)
+#include <s3c2410.h>
+#endif
+
+DECLARE_GLOBAL_DATA_PTR;
+
+#ifdef CONFIG_SERIAL1
+#define UART_NR S3C24X0_UART0
+
+#elif defined(CONFIG_SERIAL2)
+# if defined(CONFIG_TRAB)
+# error "TRAB supports only CONFIG_SERIAL1"
+# endif
+#define UART_NR S3C24X0_UART1
+
+#elif defined(CONFIG_SERIAL3)
+# if defined(CONFIG_TRAB)
+# #error "TRAB supports only CONFIG_SERIAL1"
+# endif
+#define UART_NR S3C24X0_UART2
+
+#else
+#error "Bad: you didn't configure serial ..."
+#endif
+
+#if defined(CONFIG_SERIAL_MULTI)
+#include <serial.h>
+
+/* Multi serial device functions */
+#define DECLARE_S3C_SERIAL_FUNCTIONS(port) \
+ int s3serial##port##_init (void) {\
+ return serial_init_dev(port);}\
+ void s3serial##port##_setbrg (void) {\
+ serial_setbrg_dev(port);}\
+ int s3serial##port##_getc (void) {\
+ return serial_getc_dev(port);}\
+ int s3serial##port##_tstc (void) {\
+ return serial_tstc_dev(port);}\
+ void s3serial##port##_putc (const char c) {\
+ serial_putc_dev(port, c);}\
+ void s3serial##port##_puts (const char *s) {\
+ serial_puts_dev(port, s);}
+
+#define INIT_S3C_SERIAL_STRUCTURE(port,name,bus) {\
+ name,\
+ bus,\
+ s3serial##port##_init,\
+ s3serial##port##_setbrg,\
+ s3serial##port##_getc,\
+ s3serial##port##_tstc,\
+ s3serial##port##_putc,\
+ s3serial##port##_puts, }
+
+#endif /* CONFIG_SERIAL_MULTI */
+
+void _serial_setbrg(const int dev_index)
+{
+ S3C24X0_UART * const uart = S3C24X0_GetBase_UART(dev_index);
+ unsigned int reg = 0;
+ int i;
+
+ /* value is calculated so : (int)(PCLK/16./baudrate) -1 */
+ reg = get_PCLK() / (16 * gd->baudrate) - 1;
+
+ uart->UBRDIV = reg;
+ for (i = 0; i < 100; i++);
+}
+#if defined(CONFIG_SERIAL_MULTI)
+static inline void
+serial_setbrg_dev(unsigned int dev_index)
+{
+ _serial_setbrg(dev_index);
+}
+#else
+void serial_setbrg(void)
+{
+ _serial_setbrg(UART_NR);
+}
+#endif
+
+
+/* Initialise the serial port. The settings are always 8 data bits, no parity,
+ * 1 stop bit, no start bits.
+ */
+static int serial_init_dev(const int dev_index)
+{
+ S3C24X0_UART * const uart = S3C24X0_GetBase_UART(dev_index);
+
+ /* FIFO enable, Tx/Rx FIFO clear */
+ uart->UFCON = 0x07;
+ uart->UMCON = 0x0;
+
+ /* Normal,No parity,1 stop,8 bit */
+ uart->ULCON = 0x3;
+ /*
+ * tx=level,rx=edge,disable timeout int.,enable rx error int.,
+ * normal,interrupt or polling
+ */
+ uart->UCON = 0x245;
+
+#ifdef CONFIG_HWFLOW
+ uart->UMCON = 0x1; /* RTS up */
+#endif
+
+ /* FIXME: This is sooooooooooooooooooo ugly */
+#if defined(CONFIG_ARCH_GTA02_v1) || defined(CONFIG_ARCH_GTA02_v2)
+ /* we need auto hw flow control on the gsm and gps port */
+ if (dev_index == 0 || dev_index == 1)
+ uart->UMCON = 0x10;
+#endif
+ _serial_setbrg(dev_index);
+
+ return (0);
+}
+
+#if !defined(CONFIG_SERIAL_MULTI)
+/* Initialise the serial port. The settings are always 8 data bits, no parity,
+ * 1 stop bit, no start bits.
+ */
+int serial_init (void)
+{
+ return serial_init_dev(UART_NR);
+}
+#endif
+
+/*
+ * 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 (const int dev_index)
+{
+ S3C24X0_UART * const uart = S3C24X0_GetBase_UART(dev_index);
+
+ /* wait for character to arrive */
+ while (!(uart->UTRSTAT & 0x1));
+
+ return uart->URXH & 0xff;
+}
+#if defined(CONFIG_SERIAL_MULTI)
+static inline int serial_getc_dev(unsigned int dev_index)
+{
+ return _serial_getc(dev_index);
+}
+#else
+int serial_getc (void)
+{
+ return _serial_getc(UART_NR);
+}
+#endif
+
+#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, const int dev_index)
+{
+ S3C24X0_UART * const uart = S3C24X0_GetBase_UART(dev_index);
+#ifdef CONFIG_MODEM_SUPPORT
+ if (be_quiet)
+ return;
+#endif
+
+ /* wait for room in the tx FIFO */
+ while (!(uart->UTRSTAT & 0x2));
+
+#ifdef CONFIG_HWFLOW
+ /* Wait for CTS up */
+ while(hwflow && !(uart->UMSTAT & 0x1))
+ ;
+#endif
+
+ uart->UTXH = c;
+
+ /* If \n, also do \r */
+ if (c == '\n')
+ serial_putc ('\r');
+}
+#if defined(CONFIG_SERIAL_MULTI)
+static inline void serial_putc_dev(unsigned int dev_index, const char c)
+{
+ _serial_putc(c, dev_index);
+}
+#else
+void serial_putc(const char c)
+{
+ _serial_putc(c, UART_NR);
+}
+#endif
+
+
+/*
+ * Test whether a character is in the RX buffer
+ */
+int _serial_tstc(const int dev_index)
+{
+ S3C24X0_UART * const uart = S3C24X0_GetBase_UART(dev_index);
+
+ return uart->UTRSTAT & 0x1;
+}
+#if defined(CONFIG_SERIAL_MULTI)
+static inline int
+serial_tstc_dev(unsigned int dev_index)
+{
+ return _serial_tstc(dev_index);
+}
+#else
+int serial_tstc(void)
+{
+ return _serial_tstc(UART_NR);
+}
+#endif
+
+void _serial_puts(const char *s, const int dev_index)
+{
+ while (*s) {
+ _serial_putc (*s++, dev_index);
+ }
+}
+#if defined(CONFIG_SERIAL_MULTI)
+static inline void
+serial_puts_dev(int dev_index, const char *s)
+{
+ _serial_puts(s, dev_index);
+}
+#else
+void
+serial_puts (const char *s)
+{
+ _serial_puts(s, UART_NR);
+}
+#endif
+
+#if defined(CONFIG_SERIAL_MULTI)
+DECLARE_S3C_SERIAL_FUNCTIONS(0);
+struct serial_device s3c24xx_serial0_device =
+ INIT_S3C_SERIAL_STRUCTURE(0, "s3ser0", "S3UART1");
+DECLARE_S3C_SERIAL_FUNCTIONS(1);
+struct serial_device s3c24xx_serial1_device =
+ INIT_S3C_SERIAL_STRUCTURE(1, "s3ser1", "S3UART2");
+DECLARE_S3C_SERIAL_FUNCTIONS(2);
+struct serial_device s3c24xx_serial2_device =
+ INIT_S3C_SERIAL_STRUCTURE(2, "s3ser2", "S3UART3");
+
+#endif /* CONFIG_SERIAL_MULTI */