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serial: sh-sci: fix cannot work SH7723 SCIFA

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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>
This commit is contained in:
Yoshihiro Shimoda 2008-11-11 12:19:05 +09:00 committed by Paul Mundt
parent acca4f4d9b
commit 1a22f08dbd
3 changed files with 22 additions and 17 deletions
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20
drivers/serial/sh-sci.c
View file

@ -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:

16
drivers/serial/sh-sci.h
View file

@ -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); \
} \
}

3
include/linux/serial_core.h
View file

@ -155,6 +155,9 @@
#define PORT_SC26XX 82
/* SH-SCI */
#define PORT_SCIFA 83
#ifdef __KERNEL__
#include <linux/compiler.h>