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>

diff --git a/drivers/serial/sh-sci.c b/drivers/serial/sh-sci.c
index 5c0f32c..518c032 100644 (file)
--- 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 6163a45..9f33b06 100644 (file)
--- 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 e27f216..4e4f127 100644 (file)
--- 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>