serial: uartlite: Support for SERIAL_MULTI

Add support for SERIAL MULTI for uartlite.

Signed-off-by Michal Simek <[email protected]>

---
v2: Use in/out_be32 functions

---
 common/serial.c                   |   14 ++++
 drivers/serial/serial_xuartlite.c |  137 ++++++++++++++++++++++++++++++++-----
 include/serial.h                  |    7 ++
 3 files changed, 140 insertions(+), 18 deletions(-)

common/serial.c +14 -0

index 995d268..df02fa5 100644
@@ -108,6 +108,20 @@ void serial_initialize (void)
 #if defined(CONFIG_SYS_BFIN_UART)
 	serial_register_bfin_uart();
 #endif
+#if defined(CONFIG_XILINX_UARTLITE)
+# ifdef XILINX_UARTLITE_BASEADDR
+	serial_register(&uartlite_serial0_device);
+# endif /* XILINX_UARTLITE_BASEADDR */
+# ifdef XILINX_UARTLITE_BASEADDR1
+	serial_register(&uartlite_serial1_device);
+# endif /* XILINX_UARTLITE_BASEADDR1 */
+# ifdef XILINX_UARTLITE_BASEADDR2
+	serial_register(&uartlite_serial2_device);
+# endif /* XILINX_UARTLITE_BASEADDR2 */
+# ifdef XILINX_UARTLITE_BASEADDR3
+	serial_register(&uartlite_serial3_device);
+# endif /* XILINX_UARTLITE_BASEADDR3 */
+#endif /* CONFIG_XILINX_UARTLITE */
 	serial_assign (default_serial_console ()->name);
 }
 

drivers/serial/serial_xuartlite.c +93 -18

index 00d0eaa..948d952 100644
@@ -25,20 +25,75 @@
  */
 
 #include <config.h>
+#include <common.h>
 #include <asm/io.h>
-
-#define RX_FIFO_OFFSET		0 /* receive FIFO, read only */
-#define TX_FIFO_OFFSET		4 /* transmit FIFO, write only */
-#define STATUS_REG_OFFSET	8 /* status register, read only */
+#include <linux/compiler.h>
+#include <serial.h>
 
 #define SR_TX_FIFO_FULL		0x08 /* transmit FIFO full */
 #define SR_RX_FIFO_VALID_DATA	0x01 /* data in receive FIFO */
 #define SR_RX_FIFO_FULL		0x02 /* receive FIFO full */
 
-#define UARTLITE_STATUS		(CONFIG_SERIAL_BASE + STATUS_REG_OFFSET)
-#define UARTLITE_TX_FIFO	(CONFIG_SERIAL_BASE + TX_FIFO_OFFSET)
-#define UARTLITE_RX_FIFO	(CONFIG_SERIAL_BASE + RX_FIFO_OFFSET)
+struct uartlite {
+	u32 rx_fifo;
+	u32 tx_fifo;
+	u32 status;
+};
+
+static struct uartlite *userial_ports[4] = {
+#ifdef XILINX_UARTLITE_BASEADDR
+	(struct uartlite *)XILINX_UARTLITE_BASEADDR,
+#else
+	NULL,
+#endif
+#ifdef XILINX_UARTLITE_BASEADDR1
+	(struct uartlite *)XILINX_UARTLITE_BASEADDR1,
+#else
+	NULL,
+#endif
+#ifdef XILINX_UARTLITE_BASEADDR2
+	(struct uartlite *)XILINX_UARTLITE_BASEADDR2,
+#else
+	NULL,
+#endif
+#ifdef XILINX_UARTLITE_BASEADDR3
+	(struct uartlite *)XILINX_UARTLITE_BASEADDR3
+#else
+	NULL
+#endif
+};
+
+void uartlite_serial_putc(const char c, const int port)
+{
+	struct uartlite *regs = userial_ports[port];
+	if (c == '\n')
+		uartlite_serial_putc('\r', port);
+	while (in_be32(&regs->status) & SR_TX_FIFO_FULL)
+		;
+	out_be32(&regs->tx_fifo, c & 0xff);
+}
+
+void uartlite_serial_puts(const char * s, const int port)
+{
+	while (*s)
+		uartlite_serial_putc(*s++, port);
+}
+
+int uartlite_serial_getc(const int port)
+{
+	struct uartlite *regs = userial_ports[port];
+	while (!(in_be32(&regs->status) & SR_RX_FIFO_VALID_DATA))
+		;
+	return in_be32(&regs->rx_fifo) & 0xff;
+}
+
+int uartlite_serial_tstc(const int port)
+{
+	struct uartlite *regs = userial_ports[port];
+	return in_be32(&regs->status) & SR_RX_FIFO_VALID_DATA;
+}
 
+#if !defined(CONFIG_SERIAL_MULTI)
 int serial_init(void)
 {
 	/* FIXME: Nothing for now. We should initialize fifo, etc */

@@ -52,26 +107,72 @@ void serial_setbrg(void)
 
 void serial_putc(const char c)
 {
-	if (c == '\n')
-		serial_putc('\r');
-	while (in_be32((u32 *) UARTLITE_STATUS) & SR_TX_FIFO_FULL);
-	out_be32((u32 *) UARTLITE_TX_FIFO, (unsigned char) (c & 0xff));
+	uartlite_serial_putc(c, 0);
 }
 
-void serial_puts(const char * s)
+void serial_puts(const char *s)
 {
-	while (*s) {
-		serial_putc(*s++);
-	}
+	uartlite_serial_puts(s, 0);
 }
 
 int serial_getc(void)
 {
-	while (!(in_be32((u32 *) UARTLITE_STATUS) & SR_RX_FIFO_VALID_DATA));
-	return in_be32((u32 *) UARTLITE_RX_FIFO) & 0xff;
+	return uartlite_serial_getc(0);
 }
 
 int serial_tstc(void)
 {
-	return (in_be32((u32 *) UARTLITE_STATUS) & SR_RX_FIFO_VALID_DATA);
+	return uartlite_serial_tstc(0);
+}
+#endif
+
+#if defined(CONFIG_SERIAL_MULTI)
+/* Multi serial device functions */
+#define DECLARE_ESERIAL_FUNCTIONS(port) \
+    int  userial##port##_init (void) {return(0);}\
+    void userial##port##_setbrg (void) {}\
+    int  userial##port##_getc (void) {return uartlite_serial_getc(port);}\
+    int  userial##port##_tstc (void) {return uartlite_serial_tstc(port);}\
+    void userial##port##_putc (const char c) {uartlite_serial_putc(c, port);}\
+    void userial##port##_puts (const char *s) {uartlite_serial_puts(s, port);}
+
+/* Serial device descriptor */
+#define INIT_ESERIAL_STRUCTURE(port,name) {\
+	name,\
+	userial##port##_init,\
+	NULL,\
+	userial##port##_setbrg,\
+	userial##port##_getc,\
+	userial##port##_tstc,\
+	userial##port##_putc,\
+	userial##port##_puts, }
+
+DECLARE_ESERIAL_FUNCTIONS(0);
+struct serial_device uartlite_serial0_device =

Add support for SERIAL MULTI for uartlite.

Signed-off-by Michal Simek <[email protected]>

---
v2: Use in/out_be32 functions

---
 common/serial.c                   |   14 ++++
 drivers/serial/serial_xuartlite.c |  137 ++++++++++++++++++++++++++++++++-----
 include/serial.h                  |    7 ++
 3 files changed, 140 insertions(+), 18 deletions(-)