[U-Boot-Users] [PATCH] sh: SH7763 SCIF support
Nobuhiro Iwamatsu
iwamatsu.nobuhiro at renesas.com
Fri Jun 6 09:16:08 CEST 2008
SH7763 has 3 SCIF channels. SCIF0 and 1 are same register constitution,
but only SCIF2 is different. This patch work all SCIF channel.
Signed-off-by: Nobuhiro Iwamatsu <iwamatsu.nobuhiro at renesas.com>
---
drivers/serial/serial_sh.c | 128 +++++++++++++++++++++++++-------------------
1 files changed, 73 insertions(+), 55 deletions(-)
diff --git a/drivers/serial/serial_sh.c b/drivers/serial/serial_sh.c
index aa4ff35..0801ac4 100644
--- a/drivers/serial/serial_sh.c
+++ b/drivers/serial/serial_sh.c
@@ -26,6 +26,8 @@
#define SCIF_BASE SCIF0_BASE
#elif defined (CONFIG_CONS_SCIF1)
#define SCIF_BASE SCIF1_BASE
+#elif defined (CONFIG_CONS_SCIF2)
+#define SCIF_BASE SCIF2_BASE
#else
#error "Default SCIF doesn't set....."
#endif
@@ -36,17 +38,17 @@
#define SCSCR (vu_short *)(SCIF_BASE + 0x8)
#define SCFCR (vu_short *)(SCIF_BASE + 0x18)
#define SCFDR (vu_short *)(SCIF_BASE + 0x1C)
-#ifdef CONFIG_CPU_SH7720 /* SH7720 specific */
-# define SCFSR (vu_short *)(SCIF_BASE + 0x14) /* SCSSR */
+#ifdef CONFIG_CPU_SH7720 /* SH7720 specific */
+# define SCFSR (vu_short *)(SCIF_BASE + 0x14) /* SCSSR */
# define SCFTDR (vu_char *)(SCIF_BASE + 0x20)
# define SCFRDR (vu_char *)(SCIF_BASE + 0x24)
#else
# define SCFTDR (vu_char *)(SCIF_BASE + 0xC)
-# define SCFSR (vu_short *)(SCIF_BASE + 0x10)
+# define SCFSR (vu_short *)(SCIF_BASE + 0x10)
# define SCFRDR (vu_char *)(SCIF_BASE + 0x14)
#endif
-#if defined(CONFIG_CPU_SH7780) || \
+#if defined(CONFIG_CPU_SH7780) || \
defined(CONFIG_CPU_SH7785)
# define SCRFDR (vu_short *)(SCIF_BASE + 0x20)
# define SCSPTR (vu_short *)(SCIF_BASE + 0x24)
@@ -54,20 +56,34 @@
# define SCRER (vu_short *)(SCIF_BASE + 0x2C)
# define LSR_ORER 1
# define FIFOLEVEL_MASK 0xFF
+#elif defined(CONFIG_CPU_SH7763)
+# if defined (CONFIG_CONS_SCIF2)
+# define SCSPTR (vu_short *)(SCIF_BASE + 0x20)
+# define SCLSR (vu_short *)(SCIF_BASE + 0x24)
+# define LSR_ORER 1
+# define FIFOLEVEL_MASK 0x1F
+# else
+# define SCRFDR (vu_short *)(SCIF_BASE + 0x20)
+# define SCSPTR (vu_short *)(SCIF_BASE + 0x24)
+# define SCLSR (vu_short *)(SCIF_BASE + 0x28)
+# define SCRER (vu_short *)(SCIF_BASE + 0x2C)
+# define LSR_ORER 1
+# define FIFOLEVEL_MASK 0xFF
+# endif
#elif defined(CONFIG_CPU_SH7750) || \
defined(CONFIG_CPU_SH7751) || \
defined(CONFIG_CPU_SH7722)
# define SCSPTR (vu_short *)(SCIF_BASE + 0x20)
-# define SCLSR (vu_short *)(SCIF_BASE + 0x24)
+# define SCLSR (vu_short *)(SCIF_BASE + 0x24)
# define LSR_ORER 1
# define FIFOLEVEL_MASK 0x1F
#elif defined(CONFIG_CPU_SH7720)
-# define SCLSR (vu_short *)(SCIF_BASE + 0x24)
+# define SCLSR (vu_short *)(SCIF_BASE + 0x24)
# define LSR_ORER 0x0200
# define FIFOLEVEL_MASK 0x1F
-#elif defined(CONFIG_CPU_SH7710)
+#elif defined(CONFIG_CPU_SH7710) || \
defined(CONFIG_CPU_SH7712)
-# define SCLSR SCFSR /* SCSSR */
+# define SCLSR SCFSR /* SCSSR */
# define LSR_ORER 1
# define FIFOLEVEL_MASK 0x1F
#endif
@@ -75,34 +91,34 @@
/* SCBRR register value setting */
#if defined(CONFIG_CPU_SH7720)
# define SCBRR_VALUE(bps, clk) (((clk*2)+16*bps)/(32*bps)-1)
-#else /* Generic SuperH */
+#else /* Generic SuperH */
# define SCBRR_VALUE(bps, clk) ((clk+16*bps)/(32*bps)-1)
#endif
-#define SCR_RE (1 << 4)
-#define SCR_TE (1 << 5)
-#define FCR_RFRST (1 << 1) /* RFCL */
-#define FCR_TFRST (1 << 2) /* TFCL */
-#define FSR_DR (1 << 0)
-#define FSR_RDF (1 << 1)
-#define FSR_FER (1 << 3)
-#define FSR_BRK (1 << 4)
-#define FSR_FER (1 << 3)
-#define FSR_TEND (1 << 6)
-#define FSR_ER (1 << 7)
+#define SCR_RE (1 << 4)
+#define SCR_TE (1 << 5)
+#define FCR_RFRST (1 << 1) /* RFCL */
+#define FCR_TFRST (1 << 2) /* TFCL */
+#define FSR_DR (1 << 0)
+#define FSR_RDF (1 << 1)
+#define FSR_FER (1 << 3)
+#define FSR_BRK (1 << 4)
+#define FSR_FER (1 << 3)
+#define FSR_TEND (1 << 6)
+#define FSR_ER (1 << 7)
/*----------------------------------------------------------------------*/
-void serial_setbrg (void)
+void serial_setbrg(void)
{
DECLARE_GLOBAL_DATA_PTR;
- *SCBRR = SCBRR_VALUE(gd->baudrate,CONFIG_SYS_CLK_FREQ);
+ *SCBRR = SCBRR_VALUE(gd->baudrate, CONFIG_SYS_CLK_FREQ);
}
-int serial_init (void)
+int serial_init(void)
{
*SCSCR = (SCR_RE | SCR_TE);
- *SCSMR = 0 ;
+ *SCSMR = 0;
*SCSMR = 0;
*SCFCR = (FCR_RFRST | FCR_TFRST);
*SCFCR;
@@ -112,21 +128,21 @@ int serial_init (void)
return 0;
}
-static int serial_rx_fifo_level (void)
+static int serial_rx_fifo_level(void)
{
-#if defined(CONFIG_SH4A)
+#if defined(SCRFDR)
return (*SCRFDR >> 0) & FIFOLEVEL_MASK;
#else
return (*SCFDR >> 0) & FIFOLEVEL_MASK;
#endif
}
-void serial_raw_putc (const char c)
+void serial_raw_putc(const char c)
{
unsigned int fsr_bits_to_clear;
while (1) {
- if (*SCFSR & FSR_TEND) { /* Tx fifo is empty */
+ if (*SCFSR & FSR_TEND) { /* Tx fifo is empty */
fsr_bits_to_clear = FSR_TEND;
break;
}
@@ -137,65 +153,67 @@ void serial_raw_putc (const char c)
*SCFSR &= ~fsr_bits_to_clear;
}
-void serial_putc (const char c)
+void serial_putc(const char c)
{
if (c == '\n')
- serial_raw_putc ('\r');
- serial_raw_putc (c);
+ serial_raw_putc('\r');
+ serial_raw_putc(c);
}
-void serial_puts (const char *s)
+void serial_puts(const char *s)
{
char c;
while ((c = *s++) != 0)
- serial_putc (c);
+ serial_putc(c);
}
-int serial_tstc (void)
+int serial_tstc(void)
{
- return serial_rx_fifo_level() ? 1 : 0;
+ return serial_rx_fifo_level()? 1 : 0;
}
-#define FSR_ERR_CLEAR 0x0063
-#define RDRF_CLEAR 0x00fc
-void handle_error( void ){
+#define FSR_ERR_CLEAR 0x0063
+#define RDRF_CLEAR 0x00fc
+void handle_error(void)
+{
- (void)*SCFSR ;
- *SCFSR = FSR_ERR_CLEAR ;
- (void)*SCLSR ;
- *SCLSR = 0x00 ;
+ (void)*SCFSR;
+ *SCFSR = FSR_ERR_CLEAR;
+ (void)*SCLSR;
+ *SCLSR = 0x00;
}
-int serial_getc_check( void ){
+int serial_getc_check(void)
+{
unsigned short status;
- status = *SCFSR ;
+ status = *SCFSR;
- if (status & (FSR_FER | FSR_FER | FSR_ER | FSR_BRK))
+ if (status & (FSR_FER | FSR_ER | FSR_BRK))
handle_error();
- if( *SCLSR & LSR_ORER )
+ if (*SCLSR & LSR_ORER)
handle_error();
- return (status & ( FSR_DR | FSR_RDF ));
+ return (status & (FSR_DR | FSR_RDF));
}
-int serial_getc (void)
+int serial_getc(void)
{
- unsigned short status ;
+ unsigned short status;
char ch;
- while(!serial_getc_check());
+ while (!serial_getc_check()) ;
ch = *SCFRDR;
- status = *SCFSR ;
+ status = *SCFSR;
- *SCFSR = RDRF_CLEAR ;
+ *SCFSR = RDRF_CLEAR;
if (status & (FSR_FER | FSR_FER | FSR_ER | FSR_BRK))
handle_error();
- if( *SCLSR & LSR_ORER )
+ if (*SCLSR & LSR_ORER)
handle_error();
- return ch ;
+ return ch;
}
-#endif /* CFG_SCIF_CONSOLE */
+#endif /* CFG_SCIF_CONSOLE */
--
1.5.5.1
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