summaryrefslogtreecommitdiff
path: root/drivers/serial/serial_sh.c
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/serial/serial_sh.c')
-rw-r--r--drivers/serial/serial_sh.c83
1 files changed, 42 insertions, 41 deletions
diff --git a/drivers/serial/serial_sh.c b/drivers/serial/serial_sh.c
index f30532b..bfdb2ce 100644
--- a/drivers/serial/serial_sh.c
+++ b/drivers/serial/serial_sh.c
@@ -18,6 +18,7 @@
*/
#include <common.h>
+#include <asm/io.h>
#include <asm/processor.h>
#if defined(CONFIG_CONS_SCIF0)
@@ -49,7 +50,7 @@
# 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
@@ -64,7 +65,7 @@
#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 SCLSR (vu_short *)(SCIF_BASE + 0x24)
# define LSR_ORER 1
# define FIFOLEVEL_MASK 0x1F
# else
@@ -90,11 +91,11 @@
defined(CONFIG_CPU_SH7722) || \
defined(CONFIG_CPU_SH7203)
# 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 SCFSR
# define LSR_ORER 0x0200
# define FIFOLEVEL_MASK 0x1F
#elif defined(CONFIG_CPU_SH7710) || \
@@ -106,42 +107,43 @@
/* SCBRR register value setting */
#if defined(CONFIG_CPU_SH7720)
-# define SCBRR_VALUE(bps, clk) (((clk*2)+16*bps)/(32*bps)-1)
+# define SCBRR_VALUE(bps, clk) (((clk * 2) + 16 * bps) / (32 * bps) - 1)
#elif defined(CONFIG_CPU_SH7723) && defined(CONFIG_SCIF_A)
/* SH7723 SCIFA use bus clock. So clock *2 */
-# define SCBRR_VALUE(bps, clk) (((clk*2*2)+16*bps)/(32*bps)-1)
+# define SCBRR_VALUE(bps, clk) (((clk * 2 * 2) + 16 * bps) / (32 * bps) - 1)
#else /* Generic SuperH */
-# define SCBRR_VALUE(bps, clk) ((clk+16*bps)/(32*bps)-1)
+# define SCBRR_VALUE(bps, clk) ((clk + 16 * bps) / (32 * bps) - 1)
#endif
-#define SCR_RE (1 << 4)
-#define SCR_TE (1 << 5)
+#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 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)
{
DECLARE_GLOBAL_DATA_PTR;
- *SCBRR = SCBRR_VALUE(gd->baudrate, CONFIG_SYS_CLK_FREQ);
+
+ writeb(SCBRR_VALUE(gd->baudrate, CONFIG_SYS_CLK_FREQ), SCBRR);
}
int serial_init(void)
{
- *SCSCR = (SCR_RE | SCR_TE);
- *SCSMR = 0;
- *SCSMR = 0;
- *SCFCR = (FCR_RFRST | FCR_TFRST);
- *SCFCR;
- *SCFCR = 0;
+ writew((SCR_RE | SCR_TE), SCSCR);
+ writew(0, SCSMR);
+ writew(0, SCSMR);
+ writew((FCR_RFRST | FCR_TFRST), SCFCR);
+ readw(SCFCR);
+ writew(0, SCFCR);
serial_setbrg();
return 0;
@@ -150,9 +152,9 @@ int serial_init(void)
static int serial_rx_fifo_level(void)
{
#if defined(SCRFDR)
- return (*SCRFDR >> 0) & FIFOLEVEL_MASK;
+ return (readw(SCRFDR) >> 0) & FIFOLEVEL_MASK;
#else
- return (*SCFDR >> 0) & FIFOLEVEL_MASK;
+ return (readw(SCFDR) >> 0) & FIFOLEVEL_MASK;
#endif
}
@@ -161,15 +163,15 @@ void serial_raw_putc(const char c)
unsigned int fsr_bits_to_clear;
while (1) {
- if (*SCFSR & FSR_TEND) { /* Tx fifo is empty */
+ if (readw(SCFSR) & FSR_TEND) { /* Tx fifo is empty */
fsr_bits_to_clear = FSR_TEND;
break;
}
}
- *SCFTDR = c;
+ writeb(c, SCFTDR);
if (fsr_bits_to_clear != 0)
- *SCFSR &= ~fsr_bits_to_clear;
+ writew(readw(SCFSR) & ~fsr_bits_to_clear, SCFSR);
}
void serial_putc(const char c)
@@ -191,26 +193,25 @@ int serial_tstc(void)
return serial_rx_fifo_level() ? 1 : 0;
}
-#define FSR_ERR_CLEAR 0x0063
-#define RDRF_CLEAR 0x00fc
+#define FSR_ERR_CLEAR 0x0063
+#define RDRF_CLEAR 0x00fc
void handle_error(void)
{
-
- (void)*SCFSR;
- *SCFSR = FSR_ERR_CLEAR;
- (void)*SCLSR;
- *SCLSR = 0x00;
+ readw(SCFSR);
+ writew(FSR_ERR_CLEAR, SCFSR);
+ readw(SCLSR);
+ writew(0x00, SCLSR);
}
int serial_getc_check(void)
{
unsigned short status;
- status = *SCFSR;
+ status = readw(SCFSR);
if (status & (FSR_FER | FSR_ER | FSR_BRK))
handle_error();
- if (*SCLSR & LSR_ORER)
+ if (readw(SCLSR) & LSR_ORER)
handle_error();
return status & (FSR_DR | FSR_RDF);
}
@@ -223,15 +224,15 @@ int serial_getc(void)
while (!serial_getc_check())
;
- ch = *SCFRDR;
- status = *SCFSR;
+ ch = readb(SCFRDR);
+ status = readw(SCFSR);
- *SCFSR = RDRF_CLEAR;
+ writew(RDRF_CLEAR, SCFSR);
if (status & (FSR_FER | FSR_FER | FSR_ER | FSR_BRK))
handle_error();
- if (*SCLSR & LSR_ORER)
+ if (readw(SCLSR) & LSR_ORER)
handle_error();
return ch;