本文整理汇总了C++中serial_inp函数的典型用法代码示例。如果您正苦于以下问题：C++ serial_inp函数的具体用法？C++ serial_inp怎么用？C++ serial_inp使用的例子？那么恭喜您, 这里精选的函数代码示例或许可以为您提供帮助。
在下文中一共展示了serial_inp函数的16个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于我们的系统推荐出更棒的C++代码示例。
示例1: mshutdown
/*
* This routine will shutdown a serial port; interrupts are disabled, and
* DTR is dropped if the hangup on close termio flag is on.
*/
static void mshutdown(struct IsdnCardState *cs)
{
#ifdef SERIAL_DEBUG_OPEN
;
#endif
/*
* clear delta_msr_wait queue to avoid mem leaks: we may free the irq
* here so the queue might never be waken up
*/
cs->hw.elsa.IER = 0;
serial_outp(cs, UART_IER, 0x00); /* disable all intrs */
cs->hw.elsa.MCR &= ~UART_MCR_OUT2;
/* disable break condition */
serial_outp(cs, UART_LCR, serial_inp(cs, UART_LCR) & ~UART_LCR_SBC);
cs->hw.elsa.MCR &= ~(UART_MCR_DTR|UART_MCR_RTS);
serial_outp(cs, UART_MCR, cs->hw.elsa.MCR);
/* disable FIFO's */
serial_outp(cs, UART_FCR, (UART_FCR_CLEAR_RCVR | UART_FCR_CLEAR_XMIT));
serial_inp(cs, UART_RX); /* read data port to reset things */
#ifdef SERIAL_DEBUG_OPEN
;
#endif
}
开发者ID:rrowicki，项目名称:Chrono_Kernel-1，代码行数:34，代码来源:elsa_ser.c
示例2: rs_interrupt_elsa
static void rs_interrupt_elsa(struct IsdnCardState *cs)
{
int status, iir, msr;
int pass_counter = 0;
#ifdef SERIAL_DEBUG_INTR
;
#endif
do {
status = serial_inp(cs, UART_LSR);
debugl1(cs,"rs LSR %02x", status);
#ifdef SERIAL_DEBUG_INTR
;
#endif
if (status & UART_LSR_DR)
receive_chars(cs, &status);
if (status & UART_LSR_THRE)
transmit_chars(cs, NULL);
if (pass_counter++ > RS_ISR_PASS_LIMIT) {
;
break;
}
iir = serial_inp(cs, UART_IIR);
debugl1(cs,"rs IIR %02x", iir);
if ((iir & 0xf) == 0) {
msr = serial_inp(cs, UART_MSR);
debugl1(cs,"rs MSR %02x", msr);
}
} while (!(iir & UART_IIR_NO_INT));
#ifdef SERIAL_DEBUG_INTR
;
#endif
}
开发者ID:rrowicki，项目名称:Chrono_Kernel-1，代码行数:34，代码来源:elsa_ser.c
示例3: mshutdown
/*
* This routine will shutdown a serial port; interrupts are disabled, and
* DTR is dropped if the hangup on close termio flag is on.
*/
static void mshutdown(struct IsdnCardState *cs)
{
unsigned long flags;
#ifdef SERIAL_DEBUG_OPEN
printk(KERN_DEBUG"Shutting down serial ....");
#endif
save_flags(flags); cli(); /* Disable interrupts */
/*
* clear delta_msr_wait queue to avoid mem leaks: we may free the irq
* here so the queue might never be waken up
*/
cs->hw.elsa.IER = 0;
serial_outp(cs, UART_IER, 0x00); /* disable all intrs */
cs->hw.elsa.MCR &= ~UART_MCR_OUT2;
/* disable break condition */
serial_outp(cs, UART_LCR, serial_inp(cs, UART_LCR) & ~UART_LCR_SBC);
cs->hw.elsa.MCR &= ~(UART_MCR_DTR|UART_MCR_RTS);
serial_outp(cs, UART_MCR, cs->hw.elsa.MCR);
/* disable FIFO's */
serial_outp(cs, UART_FCR, (UART_FCR_CLEAR_RCVR | UART_FCR_CLEAR_XMIT));
serial_inp(cs, UART_RX); /* read data port to reset things */
restore_flags(flags);
#ifdef SERIAL_DEBUG_OPEN
printk(" done\n");
#endif
}
开发者ID:SimonKagstrom，项目名称:mci500h-linux-2.4.27，代码行数:39，代码来源:elsa_ser.c
示例4: get_serial_char
/* Check if there is a byte ready at the serial port */
static int get_serial_char(void)
{
unsigned char ch;
if (kdb_serial.iobase == 0)
return -1;
if (serial_inp(&kdb_serial, UART_LSR) & UART_LSR_DR) {
ch = serial_inp(&kdb_serial, UART_RX);
if (ch == 0x7f)
ch = 8;
return ch;
}
return -1;
}
开发者ID:millken，项目名称:zhuxianB30，代码行数:16，代码来源:kdba_io.c
示例5: elsa_interrupt_ipac
static irqreturn_t
elsa_interrupt_ipac(int intno, void *dev_id, struct pt_regs *regs)
{
struct IsdnCardState *cs = dev_id;
u8 val;
if (!cs) {
printk(KERN_WARNING "Elsa: Spurious interrupt!\n");
return IRQ_NONE;
}
if (cs->subtyp == ELSA_QS1000PCI || cs->subtyp == ELSA_QS3000PCI) {
val = bytein(cs->hw.elsa.cfg + 0x4c); /* PCI IRQ */
if (!test_bit(FLG_BUGGY_PLX9050, &cs->HW_Flags) &&
!(val & ELSA_PCI_IRQ_MASK))
return IRQ_NONE;
}
#if ARCOFI_USE
if (cs->hw.elsa.MFlag) {
val = serial_inp(cs, UART_IIR);
if (!(val & UART_IIR_NO_INT)) {
debugl1(cs,"IIR %02x", val);
spin_lock(&cs->lock);
rs_interrupt_elsa(intno, cs);
spin_unlock(&cs->lock);
}
}
#endif
return ipac_irq(intno, dev_id, regs);
}
开发者ID:sarnobat，项目名称:knoppix，代码行数:29，代码来源:elsa.c
示例6: change_speed
/*
* This routine is called to set the UART divisor registers to match
* the specified baud rate for a serial port.
*/
static void change_speed(struct IsdnCardState *cs, int baud)
{
int quot = 0, baud_base;
unsigned cval, fcr = 0;
/* byte size and parity */
cval = 0x03;
/* Determine divisor based on baud rate */
baud_base = BASE_BAUD;
quot = baud_base / baud;
/* If the quotient is ever zero, default to 9600 bps */
if (!quot)
quot = baud_base / 9600;
/* Set up FIFO's */
if ((baud_base / quot) < 2400)
fcr = UART_FCR_ENABLE_FIFO | UART_FCR_TRIGGER_1;
else
fcr = UART_FCR_ENABLE_FIFO | UART_FCR_TRIGGER_8;
serial_outp(cs, UART_FCR, fcr);
/* CTS flow control flag and modem status interrupts */
cs->hw.elsa.IER &= ~UART_IER_MSI;
cs->hw.elsa.IER |= UART_IER_MSI;
serial_outp(cs, UART_IER, cs->hw.elsa.IER);
debugl1(cs,"modem quot=0x%x", quot);
serial_outp(cs, UART_LCR, cval | UART_LCR_DLAB);/* set DLAB */
serial_outp(cs, UART_DLL, quot & 0xff); /* LS of divisor */
serial_outp(cs, UART_DLM, quot >> 8); /* MS of divisor */
serial_outp(cs, UART_LCR, cval); /* reset DLAB */
serial_inp(cs, UART_RX);
}
开发者ID:rrowicki，项目名称:Chrono_Kernel-1，代码行数:37，代码来源:elsa_ser.c
示例7: elsa_interrupt_ipac
static void
elsa_interrupt_ipac(int intno, void *dev_id, struct pt_regs *regs)
{
struct IsdnCardState *cs = dev_id;
u_char ista,val;
int icnt=5;
if (!cs) {
printk(KERN_WARNING "Elsa: Spurious interrupt!\n");
return;
}
if (cs->subtyp == ELSA_QS1000PCI || cs->subtyp == ELSA_QS3000PCI) {
val = bytein(cs->hw.elsa.cfg + 0x4c); /* PCI IRQ */
if (!(val & ELSA_PCI_IRQ_MASK))
return;
}
#if ARCOFI_USE
if (cs->hw.elsa.MFlag) {
val = serial_inp(cs, UART_IIR);
if (!(val & UART_IIR_NO_INT)) {
debugl1(cs,"IIR %02x", val);
rs_interrupt_elsa(intno, cs);
}
}
#endif
ista = readreg(cs->hw.elsa.ale, cs->hw.elsa.isac, IPAC_ISTA);
Start_IPAC:
if (cs->debug & L1_DEB_IPAC)
debugl1(cs, "IPAC ISTA %02X", ista);
if (ista & 0x0f) {
val = readreg(cs->hw.elsa.ale, cs->hw.elsa.hscx, HSCX_ISTA + 0x40);
if (ista & 0x01)
val |= 0x01;
if (ista & 0x04)
val |= 0x02;
if (ista & 0x08)
val |= 0x04;
if (val)
hscx_int_main(cs, val);
}
if (ista & 0x20) {
val = 0xfe & readreg(cs->hw.elsa.ale, cs->hw.elsa.isac, ISAC_ISTA + 0x80);
if (val) {
isac_interrupt(cs, val);
}
}
if (ista & 0x10) {
val = 0x01;
isac_interrupt(cs, val);
}
ista = readreg(cs->hw.elsa.ale, cs->hw.elsa.isac, IPAC_ISTA);
if ((ista & 0x3f) && icnt) {
icnt--;
goto Start_IPAC;
}
if (!icnt)
printk(KERN_WARNING "ELSA IRQ LOOP\n");
writereg(cs->hw.elsa.ale, cs->hw.elsa.isac, IPAC_MASK, 0xFF);
writereg(cs->hw.elsa.ale, cs->hw.elsa.isac, IPAC_MASK, 0xC0);
}
开发者ID:nhanh0，项目名称:hah，代码行数:60，代码来源:elsa.c
示例8: elsa_interrupt
static irqreturn_t
elsa_interrupt(int intno, void *dev_id, struct pt_regs *regs)
{
struct IsdnCardState *cs = dev_id;
u8 val;
if ((cs->typ == ISDN_CTYPE_ELSA_PCMCIA) && (*cs->busy_flag == 1)) {
/* The card tends to generate interrupts while being removed
causing us to just crash the kernel. bad. */
printk(KERN_WARNING "Elsa: card not available!\n");
return IRQ_NONE;
}
#if ARCOFI_USE
if (cs->hw.elsa.MFlag) {
val = serial_inp(cs, UART_IIR);
if (!(val & UART_IIR_NO_INT)) {
debugl1(cs,"IIR %02x", val);
spin_lock(&cs->lock);
rs_interrupt_elsa(intno, cs);
spin_unlock(&cs->lock);
}
}
#endif
hscxisac_irq(intno, dev_id, regs);
if (cs->hw.elsa.status & ELSA_TIMER_AKTIV) {
if (!TimerRun(cs)) {
/* Timer Restart */
byteout(cs->hw.elsa.timer, 0);
cs->hw.elsa.counter++;
}
}
#if ARCOFI_USE
if (cs->hw.elsa.MFlag) {
val = serial_inp(cs, UART_MCR);
val ^= 0x8;
serial_outp(cs, UART_MCR, val);
val = serial_inp(cs, UART_MCR);
val ^= 0x8;
serial_outp(cs, UART_MCR, val);
}
#endif
if (cs->hw.elsa.trig)
byteout(cs->hw.elsa.trig, 0x00);
return IRQ_HANDLED;
}
开发者ID:sarnobat，项目名称:knoppix，代码行数:46，代码来源:elsa.c
示例9: serial8250_handle_port
/*
* This handles the interrupt from one port.
*/
static inline void
serial8250_handle_port(struct uart_8250_port *up, struct pt_regs *regs)
{
unsigned int status = serial_inp(up, UART_LSR);
DEBUG_INTR("status = %x...", status);
if (status & UART_LSR_DR)
receive_chars(up, &status, regs);
check_modem_status(up);
if (status & UART_LSR_THRE)
transmit_chars(up);
}
开发者ID:gnensis，项目名称:linux-2.6.15，代码行数:16，代码来源:au1x00_uart.c
示例10: get_serial_char
/* Check if there is a byte ready at the serial port */
static int get_serial_char(void)
{
if (!kdb_tty_driver) {
kdb_tty_driver = tty_find_polling_driver("ttyS0", &kdb_tty_line);
if (!kdb_tty_driver) return -1;
}
return kdb_tty_driver->ops->poll_get_char(kdb_tty_driver, kdb_tty_line);
#if 0
if (kdb_serial.iobase == 0)
return -1;
if (serial_inp(&kdb_serial, UART_LSR) & UART_LSR_DR) {
ch = serial_inp(&kdb_serial, UART_RX);
if (ch == 0x7f)
ch = 8;
return ch;
}
return -1;
#endif
}
开发者ID:mongmio，项目名称:ivyproject_thermal，代码行数:23，代码来源:kdba_io.c
示例11: serial8250_shutdown
static void serial8250_shutdown(struct uart_port *port)
{
struct uart_8250_port *up = (struct uart_8250_port *)port;
unsigned long flags;
/*
* Disable interrupts from this port
*/
up->ier = 0;
serial_outp(up, UART_IER, 0);
spin_lock_irqsave(&up->port.lock, flags);
if (up->port.flags & UPF_FOURPORT) {
/* reset interrupts on the AST Fourport board */
inb((up->port.iobase & 0xfe0) | 0x1f);
up->port.mctrl |= TIOCM_OUT1;
} else
up->port.mctrl &= ~TIOCM_OUT2;
serial8250_set_mctrl(&up->port, up->port.mctrl);
spin_unlock_irqrestore(&up->port.lock, flags);
/*
* Disable break condition and FIFOs
*/
serial_out(up, UART_LCR, serial_inp(up, UART_LCR) & ~UART_LCR_SBC);
serial_outp(up, UART_FCR, UART_FCR_ENABLE_FIFO |
UART_FCR_CLEAR_RCVR |
UART_FCR_CLEAR_XMIT);
serial_outp(up, UART_FCR, 0);
/*
* Read data port to reset things, and then unlink from
* the IRQ chain.
*/
(void) serial_in(up, UART_RX);
if (!is_real_interrupt(up->port.irq))
del_timer_sync(&up->timer);
else
serial_unlink_irq_chain(up);
}
开发者ID:gnensis，项目名称:linux-2.6.15，代码行数:42，代码来源:au1x00_uart.c
示例12: receive_chars
static inline void receive_chars(struct IsdnCardState *cs,
int *status)
{
unsigned char ch;
struct sk_buff *skb;
do {
ch = serial_in(cs, UART_RX);
if (cs->hw.elsa.rcvcnt >= MAX_MODEM_BUF)
break;
cs->hw.elsa.rcvbuf[cs->hw.elsa.rcvcnt++] = ch;
#ifdef SERIAL_DEBUG_INTR
printk("DR%02x:%02x...", ch, *status);
#endif
if (*status & (UART_LSR_BI | UART_LSR_PE |
UART_LSR_FE | UART_LSR_OE)) {
#ifdef SERIAL_DEBUG_INTR
;
#endif
}
*status = serial_inp(cs, UART_LSR);
} while (*status & UART_LSR_DR);
if (cs->hw.elsa.MFlag == 2) {
if (!(skb = dev_alloc_skb(cs->hw.elsa.rcvcnt)))
;
else {
memcpy(skb_put(skb, cs->hw.elsa.rcvcnt), cs->hw.elsa.rcvbuf,
cs->hw.elsa.rcvcnt);
skb_queue_tail(& cs->hw.elsa.bcs->rqueue, skb);
}
schedule_event(cs->hw.elsa.bcs, B_RCVBUFREADY);
} else {
char tmp[128];
char *t = tmp;
t += sprintf(t, "modem read cnt %d", cs->hw.elsa.rcvcnt);
QuickHex(t, cs->hw.elsa.rcvbuf, cs->hw.elsa.rcvcnt);
debugl1(cs, tmp);
}
cs->hw.elsa.rcvcnt = 0;
}
开发者ID:rrowicki，项目名称:Chrono_Kernel-1，代码行数:42，代码来源:elsa_ser.c
示例13: serial8250_startup
static int serial8250_startup(struct uart_port *port)
{
struct uart_8250_port *up = (struct uart_8250_port *)port;
unsigned long flags;
int retval;
/*
* Clear the FIFO buffers and disable them.
* (they will be reeanbled in set_termios())
*/
if (uart_config[up->port.type].flags & UART_CLEAR_FIFO) {
serial_outp(up, UART_FCR, UART_FCR_ENABLE_FIFO);
serial_outp(up, UART_FCR, UART_FCR_ENABLE_FIFO |
UART_FCR_CLEAR_RCVR | UART_FCR_CLEAR_XMIT);
serial_outp(up, UART_FCR, 0);
}
/*
* Clear the interrupt registers.
*/
(void) serial_inp(up, UART_LSR);
(void) serial_inp(up, UART_RX);
(void) serial_inp(up, UART_IIR);
(void) serial_inp(up, UART_MSR);
/*
* At this point, there's no way the LSR could still be 0xff;
* if it is, then bail out, because there's likely no UART
* here.
*/
if (!(up->port.flags & UPF_BUGGY_UART) &&
(serial_inp(up, UART_LSR) == 0xff)) {
printk("ttyS%d: LSR safety check engaged!\n", up->port.line);
return -ENODEV;
}
retval = serial_link_irq_chain(up);
if (retval)
return retval;
/*
* Now, initialize the UART
*/
serial_outp(up, UART_LCR, UART_LCR_WLEN8);
spin_lock_irqsave(&up->port.lock, flags);
if (up->port.flags & UPF_FOURPORT) {
if (!is_real_interrupt(up->port.irq))
up->port.mctrl |= TIOCM_OUT1;
} else
/*
* Most PC uarts need OUT2 raised to enable interrupts.
*/
if (is_real_interrupt(up->port.irq))
up->port.mctrl |= TIOCM_OUT2;
serial8250_set_mctrl(&up->port, up->port.mctrl);
spin_unlock_irqrestore(&up->port.lock, flags);
/*
* Finally, enable interrupts. Note: Modem status interrupts
* are set via set_termios(), which will be occurring imminently
* anyway, so we don't enable them here.
*/
up->ier = UART_IER_RLSI | UART_IER_RDI;
serial_outp(up, UART_IER, up->ier);
if (up->port.flags & UPF_FOURPORT) {
unsigned int icp;
/*
* Enable interrupts on the AST Fourport board
*/
icp = (up->port.iobase & 0xfe0) | 0x01f;
outb_p(0x80, icp);
(void) inb_p(icp);
}
/*
* And clear the interrupt registers again for luck.
*/
(void) serial_inp(up, UART_LSR);
(void) serial_inp(up, UART_RX);
(void) serial_inp(up, UART_IIR);
(void) serial_inp(up, UART_MSR);
return 0;
}
开发者ID:gnensis，项目名称:linux-2.6.15，代码行数:87，代码来源:au1x00_uart.c
示例14: receive_chars
static _INLINE_ void
receive_chars(struct uart_8250_port *up, int *status, struct pt_regs *regs)
{
struct tty_struct *tty = up->port.info->tty;
unsigned char ch;
int max_count = 256;
do {
if (unlikely(tty->flip.count >= TTY_FLIPBUF_SIZE)) {
tty->flip.work.func((void *)tty);
if (tty->flip.count >= TTY_FLIPBUF_SIZE)
return; // if TTY_DONT_FLIP is set
}
ch = serial_inp(up, UART_RX);
*tty->flip.char_buf_ptr = ch;
*tty->flip.flag_buf_ptr = TTY_NORMAL;
up->port.icount.rx++;
if (unlikely(*status & (UART_LSR_BI | UART_LSR_PE |
UART_LSR_FE | UART_LSR_OE))) {
/*
* For statistics only
*/
if (*status & UART_LSR_BI) {
*status &= ~(UART_LSR_FE | UART_LSR_PE);
up->port.icount.brk++;
/*
* We do the SysRQ and SAK checking
* here because otherwise the break
* may get masked by ignore_status_mask
* or read_status_mask.
*/
if (uart_handle_break(&up->port))
goto ignore_char;
} else if (*status & UART_LSR_PE)
up->port.icount.parity++;
else if (*status & UART_LSR_FE)
up->port.icount.frame++;
if (*status & UART_LSR_OE)
up->port.icount.overrun++;
/*
* Mask off conditions which should be ingored.
*/
*status &= up->port.read_status_mask;
#ifdef CONFIG_SERIAL_AU1X00_CONSOLE
if (up->port.line == up->port.cons->index) {
/* Recover the break flag from console xmit */
*status |= up->lsr_break_flag;
up->lsr_break_flag = 0;
}
#endif
if (*status & UART_LSR_BI) {
DEBUG_INTR("handling break....");
*tty->flip.flag_buf_ptr = TTY_BREAK;
} else if (*status & UART_LSR_PE)
*tty->flip.flag_buf_ptr = TTY_PARITY;
else if (*status & UART_LSR_FE)
*tty->flip.flag_buf_ptr = TTY_FRAME;
}
if (uart_handle_sysrq_char(&up->port, ch, regs))
goto ignore_char;
if ((*status & up->port.ignore_status_mask) == 0) {
tty->flip.flag_buf_ptr++;
tty->flip.char_buf_ptr++;
tty->flip.count++;
}
if ((*status & UART_LSR_OE) &&
tty->flip.count < TTY_FLIPBUF_SIZE) {
/*
* Overrun is special, since it's reported
* immediately, and doesn't affect the current
* character.
*/
*tty->flip.flag_buf_ptr = TTY_OVERRUN;
tty->flip.flag_buf_ptr++;
tty->flip.char_buf_ptr++;
tty->flip.count++;
}
ignore_char:
*status = serial_inp(up, UART_LSR);
} while ((*status & UART_LSR_DR) && (max_count-- > 0));
spin_unlock(&up->port.lock);
tty_flip_buffer_push(tty);
spin_lock(&up->port.lock);
}
开发者ID:gnensis，项目名称:linux-2.6.15，代码行数:87，代码来源:au1x00_uart.c
示例15: elsa_interrupt_ipac
static irqreturn_t
elsa_interrupt_ipac(int intno, void *dev_id)
{
struct IsdnCardState *cs = dev_id;
u_long flags;
u_char ista,val;
int icnt=5;
spin_lock_irqsave(&cs->lock, flags);
if (cs->subtyp == ELSA_QS1000PCI || cs->subtyp == ELSA_QS3000PCI) {
val = bytein(cs->hw.elsa.cfg + 0x4c); /* PCI IRQ */
if (!(val & ELSA_PCI_IRQ_MASK)) {
spin_unlock_irqrestore(&cs->lock, flags);
return IRQ_NONE;
}
}
#if ARCOFI_USE
if (cs->hw.elsa.MFlag) {
val = serial_inp(cs, UART_IIR);
if (!(val & UART_IIR_NO_INT)) {
debugl1(cs,"IIR %02x", val);
rs_interrupt_elsa(cs);
}
}
#endif
ista = readreg(cs->hw.elsa.ale, cs->hw.elsa.isac, IPAC_ISTA);
Start_IPAC:
if (cs->debug & L1_DEB_IPAC)
debugl1(cs, "IPAC ISTA %02X", ista);
if (ista & 0x0f) {
val = readreg(cs->hw.elsa.ale, cs->hw.elsa.hscx, HSCX_ISTA + 0x40);
if (ista & 0x01)
val |= 0x01;
if (ista & 0x04)
val |= 0x02;
if (ista & 0x08)
val |= 0x04;
if (val)
hscx_int_main(cs, val);
}
if (ista & 0x20) {
val = 0xfe & readreg(cs->hw.elsa.ale, cs->hw.elsa.isac, ISAC_ISTA + 0x80);
if (val) {
isac_interrupt(cs, val);
}
}
if (ista & 0x10) {
val = 0x01;
isac_interrupt(cs, val);
}
ista = readreg(cs->hw.elsa.ale, cs->hw.elsa.isac, IPAC_ISTA);
if ((ista & 0x3f) && icnt) {
icnt--;
goto Start_IPAC;
}
if (!icnt)
#ifdef CONFIG_DEBUG_PRINTK
printk(KERN_WARNING "ELSA IRQ LOOP\n");
#else
;
#endif
writereg(cs->hw.elsa.ale, cs->hw.elsa.isac, IPAC_MASK, 0xFF);
writereg(cs->hw.elsa.ale, cs->hw.elsa.isac, IPAC_MASK, 0xC0);
spin_unlock_irqrestore(&cs->lock, flags);
return IRQ_HANDLED;
}
开发者ID:Epirex，项目名称:Chrono_Kernel-1，代码行数:66，代码来源:elsa.c
示例16: mstartup
static int mstartup(struct IsdnCardState *cs)
{
int retval=0;
/*
* Clear the FIFO buffers and disable them
* (they will be reenabled in change_speed())
*/
serial_outp(cs, UART_FCR, (UART_FCR_CLEAR_RCVR | UART_FCR_CLEAR_XMIT));
/*
* At this point there's no way the LSR could still be 0xFF;
* if it is, then bail out, because there's likely no UART
* here.
*/
if (serial_inp(cs, UART_LSR) == 0xff) {
retval = -ENODEV;
goto errout;
}
/*
* Clear the interrupt registers.
*/
(void) serial_inp(cs, UART_RX);
(void) serial_inp(cs, UART_IIR);
(void) serial_inp(cs, UART_MSR);
/*
* Now, initialize the UART
*/
serial_outp(cs, UART_LCR, UART_LCR_WLEN8); /* reset DLAB */
cs->hw.elsa.MCR = 0;
cs->hw.elsa.MCR = UART_MCR_DTR | UART_MCR_RTS | UART_MCR_OUT2;
serial_outp(cs, UART_MCR, cs->hw.elsa.MCR);
/*
* Finally, enable interrupts
*/
cs->hw.elsa.IER = UART_IER_MSI | UART_IER_RLSI | UART_IER_RDI;
serial_outp(cs, UART_IER, cs->hw.elsa.IER); /* enable interrupts */
/*
* And clear the interrupt registers again for luck.
*/
(void)serial_inp(cs, UART_LSR);
(void)serial_inp(cs, UART_RX);
(void)serial_inp(cs, UART_IIR);
(void)serial_inp(cs, UART_MSR);
cs->hw.elsa.transcnt = cs->hw.elsa.transp = 0;
cs->hw.elsa.rcvcnt = cs->hw.elsa.rcvp =0;
/*
* and set the speed of the serial port
*/
change_speed(cs, BASE_BAUD);
cs->hw.elsa.MFlag = 1;
errout:
return retval;
}
开发者ID:rrowicki，项目名称:Chrono_Kernel-1，代码行数:61，代码来源:elsa_ser.c
注：本文中的serial_inp函数示例由纯净天空整理自Github/MSDocs等源码及文档管理平台，相关代码片段筛选自各路编程大神贡献的开源项目，源码版权归原作者所有，传播和使用请参考对应项目的License；未经允许，请勿转载。 |
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