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authorMarek Vasut <marex@denx.de>2012-09-13 12:25:48 +0200
committerTom Rini <trini@ti.com>2012-10-15 11:53:52 -0700
commit29b5ff7f8e392cafc91476342a7ee5bd683ee0ec (patch)
tree947efe223e1cd4ca6944755a755631785b49e7a4 /arch/sparc
parentaf7be3b6a986c48673ef5bf903146efd3205814b (diff)
downloadu-boot-linaro-stable-29b5ff7f8e392cafc91476342a7ee5bd683ee0ec.tar.gz
serial: sparc: Implement CONFIG_SERIAL_MULTI into leon3 serial driver
Implement support for CONFIG_SERIAL_MULTI into leon3 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 leon3 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: Peter Tyser <ptyser@xes-inc.com>
Diffstat (limited to 'arch/sparc')
-rw-r--r--arch/sparc/cpu/leon3/serial.c83
1 files changed, 69 insertions, 14 deletions
diff --git a/arch/sparc/cpu/leon3/serial.c b/arch/sparc/cpu/leon3/serial.c
index 4b2fcb866..a110244c9 100644
--- a/arch/sparc/cpu/leon3/serial.c
+++ b/arch/sparc/cpu/leon3/serial.c
@@ -27,6 +27,8 @@
#include <asm/processor.h>
#include <asm/leon.h>
#include <ambapp.h>
+#include <serial.h>
+#include <linux/compiler.h>
DECLARE_GLOBAL_DATA_PTR;
@@ -42,7 +44,7 @@ DECLARE_GLOBAL_DATA_PTR;
ambapp_dev_apbuart *leon3_apbuart = NULL;
-int serial_init(void)
+static int leon3_serial_init(void)
{
ambapp_apbdev apbdev;
unsigned int tmp;
@@ -72,15 +74,7 @@ int serial_init(void)
return -1; /* didn't find hardware */
}
-void serial_putc(const char c)
-{
- if (c == '\n')
- serial_putc_raw('\r');
-
- serial_putc_raw(c);
-}
-
-void serial_putc_raw(const char c)
+static void leon3_serial_putc_raw(const char c)
{
if (!leon3_apbuart)
return;
@@ -97,14 +91,22 @@ void serial_putc_raw(const char c)
#endif
}
-void serial_puts(const char *s)
+static void leon3_serial_putc(const char c)
+{
+ if (c == '\n')
+ leon3_serial_putc_raw('\r');
+
+ leon3_serial_putc_raw(c);
+}
+
+static void leon3_serial_puts(const char *s)
{
while (*s) {
serial_putc(*s++);
}
}
-int serial_getc(void)
+static int leon3_serial_getc(void)
{
if (!leon3_apbuart)
return 0;
@@ -116,7 +118,7 @@ int serial_getc(void)
return READ_WORD(leon3_apbuart->data);
}
-int serial_tstc(void)
+static int leon3_serial_tstc(void)
{
if (leon3_apbuart)
return (READ_WORD(leon3_apbuart->status) &
@@ -125,7 +127,7 @@ int serial_tstc(void)
}
/* set baud rate for uart */
-void serial_setbrg(void)
+static void leon3_serial_setbrg(void)
{
/* update baud rate settings, read it from gd->baudrate */
unsigned int scaler;
@@ -137,3 +139,56 @@ void serial_setbrg(void)
}
return;
}
+
+#ifdef CONFIG_SERIAL_MULTI
+static struct serial_device leon3_serial_drv = {
+ .name = "leon3_serial",
+ .start = leon3_serial_init,
+ .stop = NULL,
+ .setbrg = leon3_serial_setbrg,
+ .putc = leon3_serial_putc,
+ .puts = leon3_serial_puts,
+ .getc = leon3_serial_getc,
+ .tstc = leon3_serial_tstc,
+};
+
+void leon3_serial_initialize(void)
+{
+ serial_register(&leon3_serial_drv);
+}
+
+__weak struct serial_device *default_serial_console(void)
+{
+ return &leon3_serial_drv;
+}
+#else
+int serial_init(void)
+{
+ return leon3_serial_init();
+}
+
+void serial_setbrg(void)
+{
+ leon3_serial_setbrg();
+}
+
+void serial_putc(const char c)
+{
+ leon3_serial_putc(c);
+}
+
+void serial_puts(const char *s)
+{
+ leon3_serial_puts(s);
+}
+
+int serial_getc(void)
+{
+ return leon3_serial_getc();
+}
+
+int serial_tstc(void)
+{
+ return leon3_serial_tstc();
+}
+#endif