commit cc61c31df26f06a1ee92bfee51fb4cf74ee30d06
author Marek Vasut <marex@denx.de> Thu Sep 13 16:53:49 2012 +0200
committer Tom Rini <trini@ti.com> Mon Oct 15 11:53:55 2012 -0700
tree 4a441849854c59898bc9d541dcf0002caf787b0d
parent 4bee0b36de7b0cad67fccfbacde619b045ed8c14

serial: arm: Implement CONFIG_SERIAL_MULTI into s3c64xx serial driver

Implement support for CONFIG_SERIAL_MULTI into s3c64xx serial driver.
This driver was so far only usable directly, but this patch also adds
support for the multi method. This allows using more than one serial
driver alongside the s3c64xx driver. Also, add a weak implementation
of default_serial_console() returning this driver.

Signed-off-by: Marek Vasut <marex@denx.de>
Cc: Marek Vasut <marek.vasut@gmail.com>
Cc: Tom Rini <trini@ti.com>
Cc: John Rigby <john.rigby@linaro.org>
Cc: Minkyu Kang <mk7.kang@samsung.com>

common/serial.c

diff --git a/common/serial.c b/common/serial.c
index ebf6d6b..db577d1 100644
--- a/common/serial.c
+++ b/common/serial.c
@@ -78,6 +78,7 @@
 serial_initfunc(ns9750_serial_initialize);
 serial_initfunc(oc_serial_initialize);
 serial_initfunc(s3c4510b_serial_initialize);
+serial_initfunc(s3c64xx_serial_initialize);
 
 void serial_register(struct serial_device *dev)
 {
@@ -134,6 +135,7 @@
 	ns9750_serial_initialize();
 	oc_serial_initialize();
 	s3c4510b_serial_initialize();
+	s3c64xx_serial_initialize();
 
 	serial_assign(default_serial_console()->name);
 }

drivers/serial/s3c64xx.c

diff --git a/drivers/serial/s3c64xx.c b/drivers/serial/s3c64xx.c
index a88e930..823425b 100644
--- a/drivers/serial/s3c64xx.c
+++ b/drivers/serial/s3c64xx.c
@@ -68,7 +68,7 @@
 	0xffdf,
 };
 
-void serial_setbrg(void)
+static void s3c64xx_serial_setbrg(void)
 {
 	s3c64xx_uart *const uart = s3c64xx_get_base_uart(UART_NR);
 	u32 pclk = get_PCLK();
@@ -88,7 +88,7 @@
  * 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)
+static int s3c64xx_serial_init(void)
 {
 	s3c64xx_uart *const uart = s3c64xx_get_base_uart(UART_NR);
 
@@ -110,7 +110,7 @@
  * otherwise. When the function is succesfull, the character read is
  * written into its argument c.
  */
-int serial_getc(void)
+static int s3c64xx_serial_getc(void)
 {
 	s3c64xx_uart *const uart = s3c64xx_get_base_uart(UART_NR);
 
@@ -137,7 +137,7 @@
 /*
  * Output a single byte to the serial port.
  */
-void serial_putc(const char c)
+static void s3c64xx_serial_putc(const char c)
 {
 	s3c64xx_uart *const uart = s3c64xx_get_base_uart(UART_NR);
 
@@ -159,15 +159,68 @@
 /*
  * Test whether a character is in the RX buffer
  */
-int serial_tstc(void)
+static int s3c64xx_serial_tstc(void)
 {
 	s3c64xx_uart *const uart = s3c64xx_get_base_uart(UART_NR);
 
 	return uart->UTRSTAT & 0x1;
 }
 
-void serial_puts(const char *s)
+static void s3c64xx_serial_puts(const char *s)
 {
 	while (*s)
 		serial_putc(*s++);
 }
+
+#ifdef CONFIG_SERIAL_MULTI
+static struct serial_device s3c64xx_serial_drv = {
+	.name	= "s3c64xx_serial",
+	.start	= s3c64xx_serial_init,
+	.stop	= NULL,
+	.setbrg	= s3c64xx_serial_setbrg,
+	.putc	= s3c64xx_serial_putc,
+	.puts	= s3c64xx_serial_puts,
+	.getc	= s3c64xx_serial_getc,
+	.tstc	= s3c64xx_serial_tstc,
+};
+
+void s3c64xx_serial_initialize(void)
+{
+	serial_register(&s3c64xx_serial_drv);
+}
+
+__weak struct serial_device *default_serial_console(void)
+{
+	return &s3c64xx_serial_drv;
+}
+#else
+int serial_init(void)
+{
+	return s3c64xx_serial_init();
+}
+
+void serial_setbrg(void)
+{
+	s3c64xx_serial_setbrg();
+}
+
+void serial_putc(const char c)
+{
+	s3c64xx_serial_putc(c);
+}
+
+void serial_puts(const char *s)
+{
+	s3c64xx_serial_puts(s);
+}
+
+int serial_getc(void)
+{
+	return s3c64xx_serial_getc();
+}
+
+int serial_tstc(void)
+{
+	return s3c64xx_serial_tstc();
+}
+#endif