#define SR_RX_FIFO_VALID_DATA 0x01 /* data in receive FIFO */
#define SR_RX_FIFO_FULL 0x02 /* receive FIFO full */
+#define ULITE_CONTROL_RST_TX 0x01
+#define ULITE_CONTROL_RST_RX 0x02
+
struct uartlite {
unsigned int rx_fifo;
unsigned int tx_fifo;
unsigned int status;
+ unsigned int control;
};
static struct uartlite *userial_ports[4] = {
#endif
};
-void uartlite_serial_putc(const char c, const int port)
+static void uartlite_serial_putc(const char c, const int port)
{
struct uartlite *regs = userial_ports[port];
out_be32(®s->tx_fifo, c & 0xff);
}
-void uartlite_serial_puts(const char *s, const int port)
+static void uartlite_serial_puts(const char *s, const int port)
{
while (*s)
uartlite_serial_putc(*s++, port);
}
-int uartlite_serial_getc(const int port)
+static int uartlite_serial_getc(const int port)
{
struct uartlite *regs = userial_ports[port];
return in_be32(®s->rx_fifo) & 0xff;
}
-int uartlite_serial_tstc(const int port)
+static int uartlite_serial_tstc(const int port)
{
struct uartlite *regs = userial_ports[port];
static int uartlite_serial_init(const int port)
{
- if (userial_ports[port])
+ struct uartlite *regs = userial_ports[port];
+
+ if (regs) {
+ out_be32(®s->control, 0);
+ out_be32(®s->control,
+ ULITE_CONTROL_RST_RX | ULITE_CONTROL_RST_TX);
+ in_be32(®s->control);
return 0;
+ }
+
return -1;
}
/* Multi serial device functions */
#define DECLARE_ESERIAL_FUNCTIONS(port) \
- int userial##port##_init(void) \
+ static int userial##port##_init(void) \
{ return uartlite_serial_init(port); } \
- void userial##port##_setbrg(void) {} \
- int userial##port##_getc(void) \
+ static void userial##port##_setbrg(void) {} \
+ static int userial##port##_getc(void) \
{ return uartlite_serial_getc(port); } \
- int userial##port##_tstc(void) \
+ static int userial##port##_tstc(void) \
{ return uartlite_serial_tstc(port); } \
- void userial##port##_putc(const char c) \
+ static void userial##port##_putc(const char c) \
{ uartlite_serial_putc(c, port); } \
- void userial##port##_puts(const char *s) \
+ static void userial##port##_puts(const char *s) \
{ uartlite_serial_puts(s, port); }
/* Serial device descriptor */