serial: sh: Add support R8A7790

This adds the preset value to register, and setup of baudrate.

Signed-off-by: Kouei Abe <kouei.abe.cp@renesas.com>
Signed-off-by: Nobuhiro Iwamatsu <nobuhiro.iwamatsu.yj@renesas.com>

diff --git a/drivers/serial/serial_sh.c b/drivers/serial/serial_sh.c
index 67cc0dc8da6c382f326f7978eb305c81430d7fc4..0826d59ab2adbba604665b520278898130e9fa59 100644 (file)
--- a/drivers/serial/serial_sh.c
+++ b/drivers/serial/serial_sh.c
@@ -1,5 +1,6 @@
 /*
  * SuperH SCIF device driver.
+ * Copyright (C) 2013  Renesas Electronics Corporation
  * Copyright (C) 2007,2008,2010 Nobuhiro Iwamatsu
  * Copyright (C) 2002 - 2008  Paul Mundt
  *

diff --git a/drivers/serial/serial_sh.h b/drivers/serial/serial_sh.h
index 7e38a3fd533c026fdcf2f72b33ed29e635a0c61b..a6558af187d84794c5978823e39ed18f465652d2 100644 (file)
--- a/drivers/serial/serial_sh.h
+++ b/drivers/serial/serial_sh.h
@@ -224,6 +224,9 @@ struct uart_port {
 # define SCSPTR3 0xffc60020            /* 16 bit SCIF */
 # define SCIF_ORER 0x0001              /* Overrun error bit */
 # define SCSCR_INIT(port)      0x38    /* TIE=0,RIE=0,TE=1,RE=1,REIE=1 */
+#elif defined(CONFIG_R8A7790)
+# define SCIF_ORER     0x0001
+# define SCSCR_INIT(port)      0x32    /* TIE=0,RIE=0,TE=1,RE=1,REIE=0, */
 #else
 # error CPU subtype not defined
 #endif
@@ -298,6 +301,9 @@ struct uart_port {
 /* SH7763 SCIF2 support */
 # define SCIF2_RFDC_MASK 0x001f
 # define SCIF2_TXROOM_MAX 16
+#elif defined(CONFIG_R8A7790)
+# define SCIF_ERRORS (SCIF_PER | SCIF_FER | SCIF_ER | SCIF_BRK)
+# define SCIF_RFDC_MASK        0x003f
 #else
 # define SCIF_ERRORS (SCIF_PER | SCIF_FER | SCIF_ER | SCIF_BRK)
 # define SCIF_RFDC_MASK 0x001f
@@ -579,6 +585,10 @@ SCIF_FNS(SCSPTR,                        0,  0, 0, 0)
 #else
 SCIF_FNS(SCSPTR,                        0,  0, 0x20, 16)
 #endif
+#if defined(CONFIG_R8A7790)
+SCIF_FNS(DL,                           0,  0, 0x30, 16)
+SCIF_FNS(CKS,                          0,  0, 0x34, 16)
+#endif
 SCIF_FNS(SCLSR,                         0,  0, 0x24, 16)
 #endif
 #endif
@@ -720,6 +730,9 @@ static inline int scbrr_calc(struct uart_port port, int bps, int clk)
 #define SCBRR_VALUE(bps, clk) scbrr_calc(sh_sci, bps, clk)
 #elif defined(__H8300H__) || defined(__H8300S__)
 #define SCBRR_VALUE(bps, clk) (((clk*1000/32)/bps)-1)
+#elif defined(CONFIG_R8A7790)
+#define SCBRR DL
+#define SCBRR_VALUE(bps, clk) (clk / bps / 16)
 #else /* Generic SH */
 #define SCBRR_VALUE(bps, clk) ((clk+16*bps)/(32*bps)-1)
 #endif