commit 58177b78fb5872e585fdb6fff4f1b64529c1c03f
author Marek Vasut <marex@denx.de> Fri Sep 14 22:36:27 2012 +0200
committer Tom Rini <trini@ti.com> Mon Oct 15 11:53:56 2012 -0700
tree 8e8030ed3fa099e508866ab07f64560590d7214d
parent 5ee4656fa671e02fda7e031c2a1b50a19f2373b7

serial: arm: Implement CONFIG_SERIAL_MULTI into lh7a40x serial driver

Implement support for CONFIG_SERIAL_MULTI into lh7a40x 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 lh7a40x 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>

drivers/serial/serial_lh7a40x.c

diff --git a/drivers/serial/serial_lh7a40x.c b/drivers/serial/serial_lh7a40x.c
index 4767489..6b73606 100644
--- a/drivers/serial/serial_lh7a40x.c
+++ b/drivers/serial/serial_lh7a40x.c
@@ -33,7 +33,7 @@
 # error "No console configured ... "
 #endif
 
-void serial_setbrg (void)
+static void lh7a40x_serial_setbrg(void)
 {
 	lh7a40x_uart_t* uart = LH7A40X_UART_PTR(UART_CONSOLE);
 	int i;
@@ -61,7 +61,7 @@
  * are always 8 data bits, no parity, 1 stop bit, no start bits.
  *
  */
-int serial_init (void)
+static int lh7a40x_serial_init(void)
 {
 	lh7a40x_uart_t* uart = LH7A40X_UART_PTR(UART_CONSOLE);
 
@@ -95,7 +95,7 @@
  * otherwise. When the function is succesfull, the character read is
  * written into its argument c.
  */
-int serial_getc (void)
+static int lh7a40x_serial_getc(void)
 {
 	lh7a40x_uart_t* uart = LH7A40X_UART_PTR(UART_CONSOLE);
 
@@ -141,7 +141,7 @@
 /*
  * Output a single byte to the serial port.
  */
-void serial_putc (const char c)
+static void lh7a40x_serial_putc(const char c)
 {
 	lh7a40x_uart_t* uart = LH7A40X_UART_PTR(UART_CONSOLE);
 
@@ -168,17 +168,69 @@
 /*
  * Test whether a character is in the RX buffer
  */
-int serial_tstc (void)
+static int lh7a40x_serial_tstc(void)
 {
 	lh7a40x_uart_t* uart = LH7A40X_UART_PTR(UART_CONSOLE);
 
 	return(!(uart->status & UART_RXFE));
 }
 
-void
-serial_puts (const char *s)
+static void lh7a40x_serial_puts(const char *s)
 {
 	while (*s) {
 		serial_putc (*s++);
 	}
 }
+
+#ifdef CONFIG_SERIAL_MULTI
+static struct serial_device lh7a40x_serial_drv = {
+	.name	= "lh7a40x_serial",
+	.start	= lh7a40x_serial_init,
+	.stop	= NULL,
+	.setbrg	= lh7a40x_serial_setbrg,
+	.putc	= lh7a40x_serial_putc,
+	.puts	= lh7a40x_serial_puts,
+	.getc	= lh7a40x_serial_getc,
+	.tstc	= lh7a40x_serial_tstc,
+};
+
+void lh7a40x_serial_initialize(void)
+{
+	serial_register(&lh7a40x_serial_drv);
+}
+
+__weak struct serial_device *default_serial_console(void)
+{
+	return &lh7a40x_serial_drv;
+}
+#else
+int serial_init(void)
+{
+	return lh7a40x_serial_init();
+}
+
+void serial_setbrg(void)
+{
+	lh7a40x_serial_setbrg();
+}
+
+void serial_putc(const char c)
+{
+	lh7a40x_serial_putc(c);
+}
+
+void serial_puts(const char *s)
+{
+	lh7a40x_serial_puts(s);
+}
+
+int serial_getc(void)
+{
+	return lh7a40x_serial_getc();
+}
+
+int serial_tstc(void)
+{
+	return lh7a40x_serial_tstc();
+}
+#endif