summaryrefslogtreecommitdiff
path: root/drivers
diff options
context:
space:
mode:
Diffstat (limited to 'drivers')
-rw-r--r--drivers/serial/altera_uart.c85
1 files changed, 73 insertions, 12 deletions
diff --git a/drivers/serial/altera_uart.c b/drivers/serial/altera_uart.c
index 045f119..1d0dd69 100644
--- a/drivers/serial/altera_uart.c
+++ b/drivers/serial/altera_uart.c
@@ -26,6 +26,8 @@
#include <watchdog.h>
#include <asm/io.h>
#include <nios2-io.h>
+#include <linux/compiler.h>
+#include <serial.h>
DECLARE_GLOBAL_DATA_PTR;
@@ -37,27 +39,33 @@ static nios_uart_t *uart = (nios_uart_t *) CONFIG_SYS_NIOS_CONSOLE;
#if defined(CONFIG_SYS_NIOS_FIXEDBAUD)
-/* Everything's already setup for fixed-baud PTF
+/*
+ * Everything's already setup for fixed-baud PTF
* assignment
*/
-void serial_setbrg (void){ return; }
-int serial_init (void) { return (0);}
+static void altera_serial_setbrg(void)
+{
+}
+
+static int altera_serial_init(void)
+{
+ return 0;
+}
#else
-void serial_setbrg (void)
+static void altera_serial_setbrg(void)
{
unsigned div;
div = (CONFIG_SYS_CLK_FREQ/gd->baudrate)-1;
writel (div, &uart->divisor);
- return;
}
-int serial_init (void)
+static int altera_serial_init(void)
{
- serial_setbrg ();
- return (0);
+ serial_setbrg();
+ return 0;
}
#endif /* CONFIG_SYS_NIOS_FIXEDBAUD */
@@ -65,7 +73,7 @@ int serial_init (void)
/*-----------------------------------------------------------------------
* UART CONSOLE
*---------------------------------------------------------------------*/
-void serial_putc (char c)
+static void altera_serial_putc(char c)
{
if (c == '\n')
serial_putc ('\r');
@@ -74,21 +82,74 @@ void serial_putc (char c)
writel ((unsigned char)c, &uart->txdata);
}
-void serial_puts (const char *s)
+static void altera_serial_puts(const char *s)
{
while (*s != 0) {
serial_putc (*s++);
}
}
-int serial_tstc (void)
+static int altera_serial_tstc(void)
{
return (readl (&uart->status) & NIOS_UART_RRDY);
}
-int serial_getc (void)
+static int altera_serial_getc(void)
{
while (serial_tstc () == 0)
WATCHDOG_RESET ();
return (readl (&uart->rxdata) & 0x00ff );
}
+
+#ifdef CONFIG_SERIAL_MULTI
+static struct serial_device altera_serial_drv = {
+ .name = "altera_serial",
+ .start = altera_serial_init,
+ .stop = NULL,
+ .setbrg = altera_serial_setbrg,
+ .putc = altera_serial_putc,
+ .puts = altera_serial_puts,
+ .getc = altera_serial_getc,
+ .tstc = altera_serial_tstc,
+};
+
+void altera_serial_initialize(void)
+{
+ serial_register(&altera_serial_drv);
+}
+
+__weak struct serial_device *default_serial_console(void)
+{
+ return &altera_serial_drv;
+}
+#else
+int serial_init(void)
+{
+ return altera_serial_init();
+}
+
+void serial_setbrg(void)
+{
+ altera_serial_setbrg();
+}
+
+void serial_putc(const char c)
+{
+ altera_serial_putc(c);
+}
+
+void serial_puts(const char *s)
+{
+ altera_serial_puts(s);
+}
+
+int serial_getc(void)
+{
+ return altera_serial_getc();
+}
+
+int serial_tstc(void)
+{
+ return altera_serial_tstc();
+}
+#endif