serial: sh-sci: fix cannot work SH7723 SCIFA

SH7723 has SCIFA. This module is similer SCI register map, but it has FIFO.
So this patch adds new type(PORT_SCIFA) and change some type checking.

Signed-off-by: Yoshihiro Shimoda <shimoda.yoshihiro@renesas.com>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>

3 files changed, 22 insertions, 17 deletions

diff --git a/drivers/serial/sh-sci.c b/drivers/serial/sh-sci.c
index 5c0f32c7fbf6..518c0321e4d3 100644
--- a/drivers/serial/sh-sci.c
+++ b/drivers/serial/sh-sci.c
@@ -478,10 +478,10 @@ static void sci_transmit_chars(struct uart_port *port)
                 return;
         }
 
-        if (port->type == PORT_SCIF)
-                count = scif_txroom(port);
-        else
+        if (port->type == PORT_SCI)
                 count = sci_txroom(port);
+        else
+                count = scif_txroom(port);
 
         do {
                 unsigned char c;
@@ -510,7 +510,7 @@ static void sci_transmit_chars(struct uart_port *port)
         } else {
                 ctrl = sci_in(port, SCSCR);
 
-                if (port->type == PORT_SCIF) {
+                if (port->type != PORT_SCI) {
                         sci_in(port, SCxSR); /* Dummy read */
                         sci_out(port, SCxSR, SCxSR_TDxE_CLEAR(port));
                 }
@@ -536,10 +536,10 @@ static inline void sci_receive_chars(struct uart_port *port)
                 return;
 
         while (1) {
-                if (port->type == PORT_SCIF)
-                        count = scif_rxroom(port);
-                else
+                if (port->type == PORT_SCI)
                         count = sci_rxroom(port);
+                else
+                        count = scif_rxroom(port);
 
                 /* Don't copy more bytes than there is room for in the buffer */
                 count = tty_buffer_request_room(tty, count);
@@ -714,7 +714,7 @@ static inline int sci_handle_breaks(struct uart_port *port)
 
 #if defined(SCIF_ORER)
         /* XXX: Handle SCIF overrun error */
-        if (port->type == PORT_SCIF && (sci_in(port, SCLSR) & SCIF_ORER) != 0) {
+        if (port->type != PORT_SCI && (sci_in(port, SCLSR) & SCIF_ORER) != 0) {
                 sci_out(port, SCLSR, 0);
                 if (tty_insert_flip_char(tty, 0, TTY_OVERRUN)) {
                         copied++;
@@ -1042,7 +1042,7 @@ static void sci_set_termios(struct uart_port *port, struct ktermios *termios,
 
         sci_out(port, SCSCR, 0x00);     /* TE=0, RE=0, CKE1=0 */
 
-        if (port->type == PORT_SCIF)
+        if (port->type != PORT_SCI)
                 sci_out(port, SCFCR, SCFCR_RFRST | SCFCR_TFRST);
 
         smr_val = sci_in(port, SCSMR) & 3;
@@ -1085,6 +1085,7 @@ static const char *sci_type(struct uart_port *port)
                 case PORT_SCI:  return "sci";
                 case PORT_SCIF: return "scif";
                 case PORT_IRDA: return "irda";
+                case PORT_SCIFA:        return "scifa";
         }
 
         return NULL;
@@ -1112,6 +1113,7 @@ static void sci_config_port(struct uart_port *port, int flags)
                 s->init_pins = sci_init_pins_sci;
                 break;
         case PORT_SCIF:
+        case PORT_SCIFA:
                 s->init_pins = sci_init_pins_scif;
                 break;
         case PORT_IRDA:
diff --git a/drivers/serial/sh-sci.h b/drivers/serial/sh-sci.h
index 6163a45f968f..9f33b064172e 100644
--- a/drivers/serial/sh-sci.h
+++ b/drivers/serial/sh-sci.h
@@ -289,18 +289,18 @@
 #define CPU_SCIx_FNS(name, sci_offset, sci_size, scif_offset, scif_size)\
   static inline unsigned int sci_##name##_in(struct uart_port *port)    \
   {                                                                     \
-    if (port->type == PORT_SCI) {                                       \
-      SCI_IN(sci_size, sci_offset)                                      \
-    } else {                                                            \
-      SCI_IN(scif_size, scif_offset);                                   \
+    if (port->type == PORT_SCIF) {                                      \
+      SCI_IN(scif_size, scif_offset)                                    \
+    } else {    /* PORT_SCI or PORT_SCIFA */                            \
+      SCI_IN(sci_size, sci_offset);                                     \
     }                                                                   \
   }                                                                     \
   static inline void sci_##name##_out(struct uart_port *port, unsigned int value) \
   {                                                                     \
-    if (port->type == PORT_SCI) {                                       \
-      SCI_OUT(sci_size, sci_offset, value)                              \
-    } else {                                                            \
-      SCI_OUT(scif_size, scif_offset, value);                           \
+    if (port->type == PORT_SCIF) {                                      \
+      SCI_OUT(scif_size, scif_offset, value)                            \
+    } else {    /* PORT_SCI or PORT_SCIFA */                            \
+      SCI_OUT(sci_size, sci_offset, value);                             \
     }                                                                   \
   }
 
diff --git a/include/linux/serial_core.h b/include/linux/serial_core.h
index e27f216361fc..4e4f1277f3bf 100644
--- a/include/linux/serial_core.h
+++ b/include/linux/serial_core.h
@@ -155,6 +155,9 @@
 
 #define PORT_SC26XX     82
 
+/* SH-SCI */
+#define PORT_SCIFA      83
+
 #ifdef __KERNEL__
 
 #include <linux/compiler.h>