sh: Add SCIF2 support for SH7763.

SH7763 has 3 SCIF device. Current code supports SCIF0 and 1.
SCIF0 and 1 are same register constitution, but only SCIF2 is different.
I added support of SCIF2.

Signed-off-by: Nobuhiro Iwamatsu <iwamatsu.nobuhiro@renesas.com>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>

2 files changed, 43 insertions, 12 deletions

diff --git a/drivers/serial/sh-sci.c b/drivers/serial/sh-sci.c
index 208e42ba945..3df2aaec829 100644
--- a/drivers/serial/sh-sci.c
+++ b/drivers/serial/sh-sci.c
@@ -410,7 +410,6 @@ static void sci_init_pins_scif(struct uart_port *port, unsigned int cflag)
 #endif
 
 #if defined(CONFIG_CPU_SUBTYPE_SH7760) || \
-    defined(CONFIG_CPU_SUBTYPE_SH7763) || \
     defined(CONFIG_CPU_SUBTYPE_SH7780) || \
     defined(CONFIG_CPU_SUBTYPE_SH7785)
 static inline int scif_txroom(struct uart_port *port)
@@ -422,6 +421,22 @@ static inline int scif_rxroom(struct uart_port *port)
 {
         return sci_in(port, SCRFDR) & 0xff;
 }
+#elif defined(CONFIG_CPU_SUBTYPE_SH7763)
+static inline int scif_txroom(struct uart_port *port)
+{
+        if((port->mapbase == 0xffe00000) || (port->mapbase == 0xffe08000)) /* SCIF0/1*/
+                return SCIF_TXROOM_MAX - (sci_in(port, SCTFDR) & 0xff);
+        else /* SCIF2 */
+                return SCIF2_TXROOM_MAX - (sci_in(port, SCFDR) >> 8);
+}
+
+static inline int scif_rxroom(struct uart_port *port)
+{
+        if((port->mapbase == 0xffe00000) || (port->mapbase == 0xffe08000)) /* SCIF0/1*/
+                return sci_in(port, SCRFDR) & 0xff;
+        else /* SCIF2 */
+                return sci_in(port, SCFDR) & SCIF2_RFDC_MASK;
+}
 #else
 static inline int scif_txroom(struct uart_port *port)
 {
diff --git a/drivers/serial/sh-sci.h b/drivers/serial/sh-sci.h
index eb84833233f..cd728df6a01 100644
--- a/drivers/serial/sh-sci.h
+++ b/drivers/serial/sh-sci.h
@@ -123,8 +123,9 @@
 #elif defined(CONFIG_CPU_SUBTYPE_SH7763)
 # define SCSPTR0 0xffe00024 /* 16 bit SCIF */
 # define SCSPTR1 0xffe08024 /* 16 bit SCIF */
+# define SCSPTR2 0xffe10020 /* 16 bit SCIF/IRDA */
 # define SCIF_ORER 0x0001  /* overrun error bit */
-# define SCSCR_INIT(port)       0x3a    /* TIE=0,RIE=0,TE=1,RE=1,REIE=1 */
+# define SCSCR_INIT(port)       0x38    /* TIE=0,RIE=0,TE=1,RE=1,REIE=1 */
 # define SCIF_ONLY
 #elif defined(CONFIG_CPU_SUBTYPE_SH7770)
 # define SCSPTR0 0xff923020 /* 16 bit SCIF */
@@ -188,6 +189,7 @@
     defined(CONFIG_CPU_SUBTYPE_SH7750S) || \
     defined(CONFIG_CPU_SUBTYPE_SH7751)  || \
     defined(CONFIG_CPU_SUBTYPE_SH7751R) || \
+    defined(CONFIG_CPU_SUBTYPE_SH7763)  || \
     defined(CONFIG_CPU_SUBTYPE_SH7780)  || \
     defined(CONFIG_CPU_SUBTYPE_SH7785)  || \
     defined(CONFIG_CPU_SUBTYPE_SHX3)
@@ -225,14 +227,21 @@
 #if defined(CONFIG_CPU_SUBTYPE_SH7705) || \
     defined(CONFIG_CPU_SUBTYPE_SH7720) || \
     defined(CONFIG_CPU_SUBTYPE_SH7721)
-#define SCIF_ORER    0x0200
-#define SCIF_ERRORS ( SCIF_PER | SCIF_FER | SCIF_ER | SCIF_BRK | SCIF_ORER)
-#define SCIF_RFDC_MASK 0x007f
-#define SCIF_TXROOM_MAX 64
+# define SCIF_ORER    0x0200
+# define SCIF_ERRORS ( SCIF_PER | SCIF_FER | SCIF_ER | SCIF_BRK | SCIF_ORER)
+# define SCIF_RFDC_MASK 0x007f
+# define SCIF_TXROOM_MAX 64
+#elif defined(CONFIG_CPU_SUBTYPE_SH7763)
+# define SCIF_ERRORS ( SCIF_PER | SCIF_FER | SCIF_ER | SCIF_BRK )
+# define SCIF_RFDC_MASK 0x007f
+# define SCIF_TXROOM_MAX 64
+/* SH7763 SCIF2 support */
+# define SCIF2_RFDC_MASK 0x001f
+# define SCIF2_TXROOM_MAX 16
 #else
-#define SCIF_ERRORS ( SCIF_PER | SCIF_FER | SCIF_ER | SCIF_BRK)
-#define SCIF_RFDC_MASK 0x001f
-#define SCIF_TXROOM_MAX 16
+# define SCIF_ERRORS ( SCIF_PER | SCIF_FER | SCIF_ER | SCIF_BRK)
+# define SCIF_RFDC_MASK 0x001f
+# define SCIF_TXROOM_MAX 16
 #endif
 
 #if defined(SCI_ONLY)
@@ -445,11 +454,16 @@ SCIF_FNS(SCFCR,                      0x0c,  8, 0x18, 16)
     defined(CONFIG_CPU_SUBTYPE_SH7763) || \
     defined(CONFIG_CPU_SUBTYPE_SH7780) || \
     defined(CONFIG_CPU_SUBTYPE_SH7785)
-SCIF_FNS(SCFDR,                      0x0e, 16, 0x1C, 16)
 SCIF_FNS(SCTFDR,                     0x0e, 16, 0x1C, 16)
 SCIF_FNS(SCRFDR,                     0x0e, 16, 0x20, 16)
 SCIF_FNS(SCSPTR,                        0,  0, 0x24, 16)
 SCIF_FNS(SCLSR,                         0,  0, 0x28, 16)
+#if defined(CONFIG_CPU_SUBTYPE_SH7763)
+/* SH7763 SCIF2 */
+SCIF_FNS(SCFDR,                         0,  0, 0x1C, 16)
+SCIF_FNS(SCSPTR2,                       0,  0, 0x20, 16)
+SCIF_FNS(SCLSR2,                        0,  0, 0x24, 16)
+#endif /* CONFIG_CPU_SUBTYPE_SH7763 */
 #else
 SCIF_FNS(SCFDR,                      0x0e, 16, 0x1C, 16)
 #if defined(CONFIG_CPU_SUBTYPE_SH7722)
@@ -652,6 +666,9 @@ static inline int sci_rxd_in(struct uart_port *port)
                 return ctrl_inw(SCSPTR0) & 0x0001 ? 1 : 0; /* SCIF */
         if (port->mapbase == 0xffe08000)
                 return ctrl_inw(SCSPTR1) & 0x0001 ? 1 : 0; /* SCIF */
+        if (port->mapbase == 0xffe10000)
+                return ctrl_inw(SCSPTR2) & 0x0001 ? 1 : 0; /* SCIF/IRDA */
+
         return 1;
 }
 #elif defined(CONFIG_CPU_SUBTYPE_SH7770)
@@ -764,8 +781,7 @@ static inline int sci_rxd_in(struct uart_port *port)
  * -- Mitch Davis - 15 Jul 2000
  */
 
-#if defined(CONFIG_CPU_SUBTYPE_SH7763) || \
-    defined(CONFIG_CPU_SUBTYPE_SH7780) || \
+#if defined(CONFIG_CPU_SUBTYPE_SH7780) || \
     defined(CONFIG_CPU_SUBTYPE_SH7785)
 #define SCBRR_VALUE(bps, clk) ((clk+16*bps)/(16*bps)-1)
 #elif defined(CONFIG_CPU_SUBTYPE_SH7705) || \