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serial: sh-sci: use serial_port_in/out vs sci_in/out.

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Follows the 8250 change for pretty much the same rationale.

See commit "serial: use serial_port_in/out vs serial_in/out in 8250".

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
This commit is contained in:
Paul Mundt 2012-03-30 19:50:15 +09:00
parent f52b69f86e
commit b12bb29f84
2 changed files with 86 additions and 89 deletions
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167
drivers/tty/serial/sh-sci.c
View File

@ -355,9 +355,6 @@ static void sci_serial_out(struct uart_port *p, int offset, int value)
WARN(1, "Invalid register access\n");
}
#define sci_in(up, offset) (up->serial_in(up, offset))
#define sci_out(up, offset, value) (up->serial_out(up, offset, value))
static int sci_probe_regmap(struct plat_sci_port *cfg)
{
switch (cfg->type) {
@ -422,9 +419,9 @@ static int sci_poll_get_char(struct uart_port *port)
int c;
do {
status = sci_in(port, SCxSR);
status = serial_port_in(port, SCxSR);
if (status & SCxSR_ERRORS(port)) {
sci_out(port, SCxSR, SCxSR_ERROR_CLEAR(port));
serial_port_out(port, SCxSR, SCxSR_ERROR_CLEAR(port));
continue;
}
break;
@ -433,11 +430,11 @@ static int sci_poll_get_char(struct uart_port *port)
if (!(status & SCxSR_RDxF(port)))
return NO_POLL_CHAR;
c = sci_in(port, SCxRDR);
c = serial_port_in(port, SCxRDR);
/* Dummy read */
sci_in(port, SCxSR);
sci_out(port, SCxSR, SCxSR_RDxF_CLEAR(port));
serial_port_in(port, SCxSR);
serial_port_out(port, SCxSR, SCxSR_RDxF_CLEAR(port));
return c;
}
@ -448,11 +445,11 @@ static void sci_poll_put_char(struct uart_port *port, unsigned char c)
unsigned short status;
do {
status = sci_in(port, SCxSR);
status = serial_port_in(port, SCxSR);
} while (!(status & SCxSR_TDxE(port)));
sci_out(port, SCxTDR, c);
sci_out(port, SCxSR, SCxSR_TDxE_CLEAR(port) & ~SCxSR_TEND(port));
serial_port_out(port, SCxTDR, c);
serial_port_out(port, SCxSR, SCxSR_TDxE_CLEAR(port) & ~SCxSR_TEND(port));
}
#endif /* CONFIG_CONSOLE_POLL || CONFIG_SERIAL_SH_SCI_CONSOLE */
@ -480,10 +477,10 @@ static void sci_init_pins(struct uart_port *port, unsigned int cflag)
((!(cflag & CRTSCTS)))) {
unsigned short status;
status = sci_in(port, SCSPTR);
status = serial_port_in(port, SCSPTR);
status &= ~SCSPTR_CTSIO;
status |= SCSPTR_RTSIO;
sci_out(port, SCSPTR, status); /* Set RTS = 1 */
serial_port_out(port, SCSPTR, status); /* Set RTS = 1 */
}
}
@ -493,13 +490,13 @@ static int sci_txfill(struct uart_port *port)
reg = sci_getreg(port, SCTFDR);
if (reg->size)
return sci_in(port, SCTFDR) & 0xff;
return serial_port_in(port, SCTFDR) & 0xff;
reg = sci_getreg(port, SCFDR);
if (reg->size)
return sci_in(port, SCFDR) >> 8;
return serial_port_in(port, SCFDR) >> 8;
return !(sci_in(port, SCxSR) & SCI_TDRE);
return !(serial_port_in(port, SCxSR) & SCI_TDRE);
}
static int sci_txroom(struct uart_port *port)
@ -513,13 +510,13 @@ static int sci_rxfill(struct uart_port *port)
reg = sci_getreg(port, SCRFDR);
if (reg->size)
return sci_in(port, SCRFDR) & 0xff;
return serial_port_in(port, SCRFDR) & 0xff;
reg = sci_getreg(port, SCFDR);
if (reg->size)
return sci_in(port, SCFDR) & ((port->fifosize << 1) - 1);
return serial_port_in(port, SCFDR) & ((port->fifosize << 1) - 1);
return (sci_in(port, SCxSR) & SCxSR_RDxF(port)) != 0;
return (serial_port_in(port, SCxSR) & SCxSR_RDxF(port)) != 0;
}
/*
@ -547,14 +544,14 @@ static void sci_transmit_chars(struct uart_port *port)
unsigned short ctrl;
int count;
status = sci_in(port, SCxSR);
status = serial_port_in(port, SCxSR);
if (!(status & SCxSR_TDxE(port))) {
ctrl = sci_in(port, SCSCR);
ctrl = serial_port_in(port, SCSCR);
if (uart_circ_empty(xmit))
ctrl &= ~SCSCR_TIE;
else
ctrl |= SCSCR_TIE;
sci_out(port, SCSCR, ctrl);
serial_port_out(port, SCSCR, ctrl);
return;
}
@ -573,27 +570,27 @@ static void sci_transmit_chars(struct uart_port *port)
break;
}
sci_out(port, SCxTDR, c);
serial_port_out(port, SCxTDR, c);
port->icount.tx++;
} while (--count > 0);
sci_out(port, SCxSR, SCxSR_TDxE_CLEAR(port));
serial_port_out(port, SCxSR, SCxSR_TDxE_CLEAR(port));
if (uart_circ_chars_pending(xmit) < WAKEUP_CHARS)
uart_write_wakeup(port);
if (uart_circ_empty(xmit)) {
sci_stop_tx(port);
} else {
ctrl = sci_in(port, SCSCR);
ctrl = serial_port_in(port, SCSCR);
if (port->type != PORT_SCI) {
sci_in(port, SCxSR); /* Dummy read */
sci_out(port, SCxSR, SCxSR_TDxE_CLEAR(port));
serial_port_in(port, SCxSR); /* Dummy read */
serial_port_out(port, SCxSR, SCxSR_TDxE_CLEAR(port));
}
ctrl |= SCSCR_TIE;
sci_out(port, SCSCR, ctrl);
serial_port_out(port, SCSCR, ctrl);
}
}
@ -608,7 +605,7 @@ static void sci_receive_chars(struct uart_port *port)
unsigned short status;
unsigned char flag;
status = sci_in(port, SCxSR);
status = serial_port_in(port, SCxSR);
if (!(status & SCxSR_RDxF(port)))
return;
@ -621,7 +618,7 @@ static void sci_receive_chars(struct uart_port *port)
break;
if (port->type == PORT_SCI) {
char c = sci_in(port, SCxRDR);
char c = serial_port_in(port, SCxRDR);
if (uart_handle_sysrq_char(port, c) ||
sci_port->break_flag)
count = 0;
@ -629,9 +626,9 @@ static void sci_receive_chars(struct uart_port *port)
tty_insert_flip_char(tty, c, TTY_NORMAL);
} else {
for (i = 0; i < count; i++) {
char c = sci_in(port, SCxRDR);
char c = serial_port_in(port, SCxRDR);
status = sci_in(port, SCxSR);
status = serial_port_in(port, SCxSR);
#if defined(CONFIG_CPU_SH3)
/* Skip "chars" during break */
if (sci_port->break_flag) {
@ -672,8 +669,8 @@ static void sci_receive_chars(struct uart_port *port)
}
}
sci_in(port, SCxSR); /* dummy read */
sci_out(port, SCxSR, SCxSR_RDxF_CLEAR(port));
serial_port_in(port, SCxSR); /* dummy read */
serial_port_out(port, SCxSR, SCxSR_RDxF_CLEAR(port));
copied += count;
port->icount.rx += count;
@ -683,8 +680,8 @@ static void sci_receive_chars(struct uart_port *port)
/* Tell the rest of the system the news. New characters! */
tty_flip_buffer_push(tty);
} else {
sci_in(port, SCxSR); /* dummy read */
sci_out(port, SCxSR, SCxSR_RDxF_CLEAR(port));
serial_port_in(port, SCxSR); /* dummy read */
serial_port_out(port, SCxSR, SCxSR_RDxF_CLEAR(port));
}
}
@ -726,7 +723,7 @@ static void sci_break_timer(unsigned long data)
static int sci_handle_errors(struct uart_port *port)
{
int copied = 0;
unsigned short status = sci_in(port, SCxSR);
unsigned short status = serial_port_in(port, SCxSR);
struct tty_struct *tty = port->state->port.tty;
struct sci_port *s = to_sci_port(port);
@ -804,8 +801,8 @@ static int sci_handle_fifo_overrun(struct uart_port *port)
if (!reg->size)
return 0;
if ((sci_in(port, SCLSR) & (1 << s->cfg->overrun_bit))) {
sci_out(port, SCLSR, 0);
if ((serial_port_in(port, SCLSR) & (1 << s->cfg->overrun_bit))) {
serial_port_out(port, SCLSR, 0);
port->icount.overrun++;
@ -822,7 +819,7 @@ static int sci_handle_fifo_overrun(struct uart_port *port)
static int sci_handle_breaks(struct uart_port *port)
{
int copied = 0;
unsigned short status = sci_in(port, SCxSR);
unsigned short status = serial_port_in(port, SCxSR);
struct tty_struct *tty = port->state->port.tty;
struct sci_port *s = to_sci_port(port);
@ -859,8 +856,8 @@ static irqreturn_t sci_rx_interrupt(int irq, void *ptr)
struct sci_port *s = to_sci_port(port);
if (s->chan_rx) {
u16 scr = sci_in(port, SCSCR);
u16 ssr = sci_in(port, SCxSR);
u16 scr = serial_port_in(port, SCSCR);
u16 ssr = serial_port_in(port, SCxSR);
/* Disable future Rx interrupts */
if (port->type == PORT_SCIFA || port->type == PORT_SCIFB) {
@ -869,9 +866,9 @@ static irqreturn_t sci_rx_interrupt(int irq, void *ptr)
} else {
scr &= ~SCSCR_RIE;
}
sci_out(port, SCSCR, scr);
serial_port_out(port, SCSCR, scr);
/* Clear current interrupt */
sci_out(port, SCxSR, ssr & ~(1 | SCxSR_RDxF(port)));
serial_port_out(port, SCxSR, ssr & ~(1 | SCxSR_RDxF(port)));
dev_dbg(port->dev, "Rx IRQ %lu: setup t-out in %u jiffies\n",
jiffies, s->rx_timeout);
mod_timer(&s->rx_timer, jiffies + s->rx_timeout);
@ -909,15 +906,15 @@ static irqreturn_t sci_er_interrupt(int irq, void *ptr)
if (port->type == PORT_SCI) {
if (sci_handle_errors(port)) {
/* discard character in rx buffer */
sci_in(port, SCxSR);
sci_out(port, SCxSR, SCxSR_RDxF_CLEAR(port));
serial_port_in(port, SCxSR);
serial_port_out(port, SCxSR, SCxSR_RDxF_CLEAR(port));
}
} else {
sci_handle_fifo_overrun(port);
sci_rx_interrupt(irq, ptr);
}
sci_out(port, SCxSR, SCxSR_ERROR_CLEAR(port));
serial_port_out(port, SCxSR, SCxSR_ERROR_CLEAR(port));
/* Kick the transmission */
sci_tx_interrupt(irq, ptr);
@ -931,7 +928,7 @@ static irqreturn_t sci_br_interrupt(int irq, void *ptr)
/* Handle BREAKs */
sci_handle_breaks(port);
sci_out(port, SCxSR, SCxSR_BREAK_CLEAR(port));
serial_port_out(port, SCxSR, SCxSR_BREAK_CLEAR(port));
return IRQ_HANDLED;
}
@ -955,8 +952,8 @@ static irqreturn_t sci_mpxed_interrupt(int irq, void *ptr)
struct sci_port *s = to_sci_port(port);
irqreturn_t ret = IRQ_NONE;
ssr_status = sci_in(port, SCxSR);
scr_status = sci_in(port, SCSCR);
ssr_status = serial_port_in(port, SCxSR);
scr_status = serial_port_in(port, SCSCR);
err_enabled = scr_status & port_rx_irq_mask(port);
/* Tx Interrupt */
@ -1170,7 +1167,7 @@ static void sci_free_gpios(struct sci_port *port)
static unsigned int sci_tx_empty(struct uart_port *port)
{
unsigned short status = sci_in(port, SCxSR);
unsigned short status = serial_port_in(port, SCxSR);
unsigned short in_tx_fifo = sci_txfill(port);
return (status & SCxSR_TEND(port)) && !in_tx_fifo ? TIOCSER_TEMT : 0;
@ -1198,7 +1195,7 @@ static void sci_set_mctrl(struct uart_port *port, unsigned int mctrl)
*/
reg = sci_getreg(port, SCFCR);
if (reg->size)
sci_out(port, SCFCR, sci_in(port, SCFCR) | 1);
serial_port_out(port, SCFCR, serial_port_in(port, SCFCR) | 1);
}
}
@ -1240,8 +1237,8 @@ static void sci_dma_tx_complete(void *arg)
} else {
s->cookie_tx = -EINVAL;
if (port->type == PORT_SCIFA || port->type == PORT_SCIFB) {
u16 ctrl = sci_in(port, SCSCR);
sci_out(port, SCSCR, ctrl & ~SCSCR_TIE);
u16 ctrl = serial_port_in(port, SCSCR);
serial_port_out(port, SCSCR, ctrl & ~SCSCR_TIE);
}
}
@ -1494,13 +1491,13 @@ static void sci_start_tx(struct uart_port *port)
#ifdef CONFIG_SERIAL_SH_SCI_DMA
if (port->type == PORT_SCIFA || port->type == PORT_SCIFB) {
u16 new, scr = sci_in(port, SCSCR);
u16 new, scr = serial_port_in(port, SCSCR);
if (s->chan_tx)
new = scr | 0x8000;
else
new = scr & ~0x8000;
if (new != scr)
sci_out(port, SCSCR, new);
serial_port_out(port, SCSCR, new);
}
if (s->chan_tx && !uart_circ_empty(&s->port.state->xmit) &&
@ -1512,8 +1509,8 @@ static void sci_start_tx(struct uart_port *port)
if (!s->chan_tx || port->type == PORT_SCIFA || port->type == PORT_SCIFB) {
/* Set TIE (Transmit Interrupt Enable) bit in SCSCR */
ctrl = sci_in(port, SCSCR);
sci_out(port, SCSCR, ctrl | SCSCR_TIE);
ctrl = serial_port_in(port, SCSCR);
serial_port_out(port, SCSCR, ctrl | SCSCR_TIE);
}
}
@ -1522,40 +1519,40 @@ static void sci_stop_tx(struct uart_port *port)
unsigned short ctrl;
/* Clear TIE (Transmit Interrupt Enable) bit in SCSCR */
ctrl = sci_in(port, SCSCR);
ctrl = serial_port_in(port, SCSCR);
if (port->type == PORT_SCIFA || port->type == PORT_SCIFB)
ctrl &= ~0x8000;
ctrl &= ~SCSCR_TIE;
sci_out(port, SCSCR, ctrl);
serial_port_out(port, SCSCR, ctrl);
}
static void sci_start_rx(struct uart_port *port)
{
unsigned short ctrl;
ctrl = sci_in(port, SCSCR) | port_rx_irq_mask(port);
ctrl = serial_port_in(port, SCSCR) | port_rx_irq_mask(port);
if (port->type == PORT_SCIFA || port->type == PORT_SCIFB)
ctrl &= ~0x4000;
sci_out(port, SCSCR, ctrl);
serial_port_out(port, SCSCR, ctrl);
}
static void sci_stop_rx(struct uart_port *port)
{
unsigned short ctrl;
ctrl = sci_in(port, SCSCR);
ctrl = serial_port_in(port, SCSCR);
if (port->type == PORT_SCIFA || port->type == PORT_SCIFB)
ctrl &= ~0x4000;
ctrl &= ~port_rx_irq_mask(port);
sci_out(port, SCSCR, ctrl);
serial_port_out(port, SCSCR, ctrl);
}
static void sci_enable_ms(struct uart_port *port)
@ -1589,13 +1586,13 @@ static void rx_timer_fn(unsigned long arg)
{
struct sci_port *s = (struct sci_port *)arg;
struct uart_port *port = &s->port;
u16 scr = sci_in(port, SCSCR);
u16 scr = serial_port_in(port, SCSCR);
if (port->type == PORT_SCIFA || port->type == PORT_SCIFB) {
scr &= ~0x4000;
enable_irq(s->cfg->irqs[1]);
}
sci_out(port, SCSCR, scr | SCSCR_RIE);
serial_port_out(port, SCSCR, scr | SCSCR_RIE);
dev_dbg(port->dev, "DMA Rx timed out\n");
schedule_work(&s->work_rx);
}
@ -1776,14 +1773,14 @@ static void sci_reset(struct uart_port *port)
unsigned int status;
do {
status = sci_in(port, SCxSR);
status = serial_port_in(port, SCxSR);
} while (!(status & SCxSR_TEND(port)));
sci_out(port, SCSCR, 0x00); /* TE=0, RE=0, CKE1=0 */
serial_port_out(port, SCSCR, 0x00); /* TE=0, RE=0, CKE1=0 */
reg = sci_getreg(port, SCFCR);
if (reg->size)
sci_out(port, SCFCR, SCFCR_RFRST | SCFCR_TFRST);
serial_port_out(port, SCFCR, SCFCR_RFRST | SCFCR_TFRST);
}
static void sci_set_termios(struct uart_port *port, struct ktermios *termios,
@ -1812,7 +1809,7 @@ static void sci_set_termios(struct uart_port *port, struct ktermios *termios,
sci_reset(port);
smr_val = sci_in(port, SCSMR) & 3;
smr_val = serial_port_in(port, SCSMR) & 3;
if ((termios->c_cflag & CSIZE) == CS7)
smr_val |= 0x40;
@ -1825,19 +1822,19 @@ static void sci_set_termios(struct uart_port *port, struct ktermios *termios,
uart_update_timeout(port, termios->c_cflag, baud);
sci_out(port, SCSMR, smr_val);
serial_port_out(port, SCSMR, smr_val);
dev_dbg(port->dev, "%s: SMR %x, t %x, SCSCR %x\n", __func__, smr_val, t,
s->cfg->scscr);
if (t > 0) {
if (t >= 256) {
sci_out(port, SCSMR, (sci_in(port, SCSMR) & ~3) | 1);
serial_port_out(port, SCSMR, (serial_port_in(port, SCSMR) & ~3) | 1);
t >>= 2;
} else
sci_out(port, SCSMR, sci_in(port, SCSMR) & ~3);
serial_port_out(port, SCSMR, serial_port_in(port, SCSMR) & ~3);
sci_out(port, SCBRR, t);
serial_port_out(port, SCBRR, t);
udelay((1000000+(baud-1)) / baud); /* Wait one bit interval */
}
@ -1845,7 +1842,7 @@ static void sci_set_termios(struct uart_port *port, struct ktermios *termios,
reg = sci_getreg(port, SCFCR);
if (reg->size) {
unsigned short ctrl = sci_in(port, SCFCR);
unsigned short ctrl = serial_port_in(port, SCFCR);
if (s->cfg->capabilities & SCIx_HAVE_RTSCTS) {
if (termios->c_cflag & CRTSCTS)
@ -1861,10 +1858,10 @@ static void sci_set_termios(struct uart_port *port, struct ktermios *termios,
*/
ctrl &= ~(SCFCR_RFRST | SCFCR_TFRST);
sci_out(port, SCFCR, ctrl);
serial_port_out(port, SCFCR, ctrl);
}
sci_out(port, SCSCR, s->cfg->scscr);
serial_port_out(port, SCSCR, s->cfg->scscr);
#ifdef CONFIG_SERIAL_SH_SCI_DMA
/*
@ -2166,7 +2163,7 @@ static void serial_console_write(struct console *co, const char *s,
/* wait until fifo is empty and last bit has been transmitted */
bits = SCxSR_TDxE(port) | SCxSR_TEND(port);
while ((sci_in(port, SCxSR) & bits) != bits)
while ((serial_port_in(port, SCxSR) & bits) != bits)
cpu_relax();
sci_port_disable(sci_port);
@ -2260,12 +2257,12 @@ static int sci_runtime_suspend(struct device *dev)
if (uart_console(port)) {
struct plat_sci_reg *reg;
sci_port->saved_smr = sci_in(port, SCSMR);
sci_port->saved_brr = sci_in(port, SCBRR);
sci_port->saved_smr = serial_port_in(port, SCSMR);
sci_port->saved_brr = serial_port_in(port, SCBRR);
reg = sci_getreg(port, SCFCR);
if (reg->size)
sci_port->saved_fcr = sci_in(port, SCFCR);
sci_port->saved_fcr = serial_port_in(port, SCFCR);
else
sci_port->saved_fcr = 0;
}
@ -2279,13 +2276,13 @@ static int sci_runtime_resume(struct device *dev)
if (uart_console(port)) {
sci_reset(port);
sci_out(port, SCSMR, sci_port->saved_smr);
sci_out(port, SCBRR, sci_port->saved_brr);
serial_port_out(port, SCSMR, sci_port->saved_smr);
serial_port_out(port, SCBRR, sci_port->saved_brr);
if (sci_port->saved_fcr)
sci_out(port, SCFCR, sci_port->saved_fcr);
serial_port_out(port, SCFCR, sci_port->saved_fcr);
sci_out(port, SCSCR, sci_port->cfg->scscr);
serial_port_out(port, SCSCR, sci_port->cfg->scscr);
}
return 0;
}

8
drivers/tty/serial/sh-sci.h
View File

@ -20,10 +20,10 @@
defined(CONFIG_ARCH_SH7372) || \
defined(CONFIG_ARCH_R8A7740)
# define SCxSR_RDxF_CLEAR(port) (sci_in(port, SCxSR) & 0xfffc)
# define SCxSR_ERROR_CLEAR(port) (sci_in(port, SCxSR) & 0xfd73)
# define SCxSR_TDxE_CLEAR(port) (sci_in(port, SCxSR) & 0xffdf)
# define SCxSR_BREAK_CLEAR(port) (sci_in(port, SCxSR) & 0xffe3)
# define SCxSR_RDxF_CLEAR(port) (serial_port_in(port, SCxSR) & 0xfffc)
# define SCxSR_ERROR_CLEAR(port) (serial_port_in(port, SCxSR) & 0xfd73)
# define SCxSR_TDxE_CLEAR(port) (serial_port_in(port, SCxSR) & 0xffdf)
# define SCxSR_BREAK_CLEAR(port) (serial_port_in(port, SCxSR) & 0xffe3)
#else
# define SCxSR_RDxF_CLEAR(port) (((port)->type == PORT_SCI) ? 0xbc : 0x00fc)
# define SCxSR_ERROR_CLEAR(port) (((port)->type == PORT_SCI) ? 0xc4 : 0x0073)