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C++ parport_read_status函数代码示例

本文整理汇总了C++中parport_read_status函数的典型用法代码示例。如果您正苦于以下问题：C++ parport_read_status函数的具体用法？C++ parport_read_status怎么用？C++ parport_read_status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parport_read_status函数的13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，您的评价将有助于系统推荐出更棒的C++代码示例。

示例1: parport_wait_peripheral

int parport_wait_peripheral(struct parport *port,
			    unsigned char mask, 
			    unsigned char result)
{
	int ret;
	int usec;
	long deadline;
	unsigned char status;

	usec = port->physport->spintime; /* usecs of fast polling */
	if (!port->physport->cad->timeout)
		/* A zero timeout is "special": busy wait for the
		   entire 35ms. */
		usec = 35000;

	/* Fast polling.
	 *
	 * This should be adjustable.
	 * How about making a note (in the device structure) of how long
	 * it takes, so we know for next time?
	 */
	ret = parport_poll_peripheral (port, mask, result, usec);
	if (ret != 1)
		return ret;

	if (!port->physport->cad->timeout)
		/* We may be in an interrupt handler, so we can't poll
		 * slowly anyway. */
		return 1;

	/* 40ms of slow polling. */
	deadline = jiffies + (HZ + 24) / 25;
	while (time_before (jiffies, deadline)) {
		int ret;

		if (signal_pending (current))
			return -EINTR;

		/* Wait for 10ms (or until an interrupt occurs if
		 * the handler is set) */
		if ((ret = parport_wait_event (port, (HZ + 99) / 100)) < 0)
			return ret;

		status = parport_read_status (port);
		if ((status & mask) == result)
			return 0;

		if (!ret) {
			/* parport_wait_event didn't time out, but the
			 * peripheral wasn't actually ready either.
			 * Wait for another 10ms. */
			__set_current_state (TASK_INTERRUPTIBLE);
			schedule_timeout ((HZ+ 99) / 100);
		}
	}

	return 1;
}
开发者ID:ProjectZeroSlackr，项目名称:linux-2.4.32-ipod，代码行数:58，代码来源:ieee1284.c

示例2: parport_ieee1284_ack_data_avail

static int parport_ieee1284_ack_data_avail (struct parport *port)
{
	if (parport_read_status (port) & PARPORT_STATUS_ERROR)
		
		return -1;

	
	port->ops->frob_control (port, PARPORT_CONTROL_AUTOFD, 0);
	port->ieee1284.phase = IEEE1284_PH_HBUSY_DAVAIL;
	return 0;
}
开发者ID:DirtyDroidX，项目名称:android_kernel_htc_m8ul，代码行数:11，代码来源:ieee1284.c

示例3: getmiso

static inline int getmiso(struct spi_device *spi)
{
	struct butterfly	*pp = spidev_to_pp(spi);
	int			value;
	u8			bit;

	bit = spi_miso_bit;

	/* only STATUS_BUSY is NOT negated */
	value = !(parport_read_status(pp->port) & bit);
	return (bit == PARPORT_STATUS_BUSY) ? value : !value;
}
开发者ID:303750856，项目名称:linux-3.1，代码行数:12，代码来源:spi-butterfly.c

示例4: in

static unsigned int in(int offset)
{
	switch (offset) {
	case LIRC_LP_BASE:
		return parport_read_data(pport);
	case LIRC_LP_STATUS:
		return parport_read_status(pport);
	case LIRC_LP_CONTROL:
		return parport_read_control(pport);
	}
	return 0; /* make compiler happy */
}
开发者ID:mikuhatsune001，项目名称:linux2.6.32，代码行数:12，代码来源:lirc_parallel.c

示例5: db9_saturn_read_sub

/*
 * gc_saturn_read_sub() reads 4 bit data.
 */
static unsigned char db9_saturn_read_sub(struct parport *port, int type)
{
	unsigned char data;

	if (type) {
		/* DPP */
		data = parport_read_status(port) ^ 0x80;
		return (data & 0x80 ? 1 : 0) | (data & 0x40 ? 2 : 0)
		     | (data & 0x20 ? 4 : 0) | (data & 0x10 ? 8 : 0);
	} else {
		/* DB9 */
		data = parport_read_data(port) & 0x0f;
		return (data & 0x8 ? 1 : 0) | (data & 0x4 ? 2 : 0)
		     | (data & 0x2 ? 4 : 0) | (data & 0x1 ? 8 : 0);
	}
}
开发者ID:Dronevery，项目名称:JetsonTK1-kernel，代码行数:19，代码来源:db9.c

示例6: parport_wait_peripheral

int parport_wait_peripheral(struct parport *port,
			    unsigned char mask, 
			    unsigned char result)
{
	int ret;
	int usec;
	unsigned long deadline;
	unsigned char status;

	usec = port->physport->spintime; 
	if (!port->physport->cad->timeout)
		usec = 35000;

	ret = parport_poll_peripheral (port, mask, result, usec);
	if (ret != 1)
		return ret;

	if (!port->physport->cad->timeout)
		return 1;

	
	deadline = jiffies + msecs_to_jiffies(40);
	while (time_before (jiffies, deadline)) {
		if (signal_pending (current))
			return -EINTR;

		if ((ret = parport_wait_event (port, msecs_to_jiffies(10))) < 0)
			return ret;

		status = parport_read_status (port);
		if ((status & mask) == result)
			return 0;

		if (!ret) {
			schedule_timeout_interruptible(msecs_to_jiffies(10));
		}
	}

	return 1;
}
开发者ID:DirtyDroidX，项目名称:android_kernel_htc_m8ul，代码行数:40，代码来源:ieee1284.c

示例7: assign_addrs

static int assign_addrs (struct parport *port)
{
	unsigned char s, last_dev;
	unsigned char daisy;
	int thisdev = numdevs;
	int detected;
	char *deviceid;

	parport_data_forward (port);
	parport_write_data (port, 0xaa); udelay (2);
	parport_write_data (port, 0x55); udelay (2);
	parport_write_data (port, 0x00); udelay (2);
	parport_write_data (port, 0xff); udelay (2);
	s = parport_read_status (port) & (PARPORT_STATUS_BUSY
					  | PARPORT_STATUS_PAPEROUT
					  | PARPORT_STATUS_SELECT
					  | PARPORT_STATUS_ERROR);
	if (s != (PARPORT_STATUS_BUSY
		  | PARPORT_STATUS_PAPEROUT
		  | PARPORT_STATUS_SELECT
		  | PARPORT_STATUS_ERROR)) {
		DPRINTK (KERN_DEBUG "%s: assign_addrs: aa5500ff(%02x)\n",
			 port->name, s);
		return 0;
	}

	parport_write_data (port, 0x87); udelay (2);
	s = parport_read_status (port) & (PARPORT_STATUS_BUSY
					  | PARPORT_STATUS_PAPEROUT
					  | PARPORT_STATUS_SELECT
					  | PARPORT_STATUS_ERROR);
	if (s != (PARPORT_STATUS_SELECT | PARPORT_STATUS_ERROR)) {
		DPRINTK (KERN_DEBUG "%s: assign_addrs: aa5500ff87(%02x)\n",
			 port->name, s);
		return 0;
	}

	parport_write_data (port, 0x78); udelay (2);
	last_dev = 0; /* We've just been speaking to a device, so we
			 know there must be at least _one_ out there. */

	for (daisy = 0; daisy < 4; daisy++) {
		parport_write_data (port, daisy);
		udelay (2);
		parport_frob_control (port,
				      PARPORT_CONTROL_STROBE,
				      PARPORT_CONTROL_STROBE);
		udelay (1);
		parport_frob_control (port, PARPORT_CONTROL_STROBE, 0);
		udelay (1);

		if (last_dev)
			/* No more devices. */
			break;

		last_dev = !(parport_read_status (port)
			     & PARPORT_STATUS_BUSY);

		add_dev (numdevs++, port, daisy);
	}

	parport_write_data (port, 0xff); udelay (2);
	detected = numdevs - thisdev;
	DPRINTK (KERN_DEBUG "%s: Found %d daisy-chained devices\n", port->name,
		 detected);

	/* Ask the new devices to introduce themselves. */
	deviceid = kmalloc (1000, GFP_KERNEL);
	if (!deviceid) return 0;

	for (daisy = 0; thisdev < numdevs; thisdev++, daisy++)
		parport_device_id (thisdev, deviceid, 1000);

	kfree (deviceid);
	return detected;
}
开发者ID:xricson，项目名称:knoppix，代码行数:76，代码来源:daisy.c

示例8: assign_addrs

static int assign_addrs(struct parport *port)
{
	unsigned char s;
	unsigned char daisy;
	int thisdev = numdevs;
	int detected;
	char *deviceid;

	parport_data_forward(port);
	parport_write_data(port, 0xaa); udelay(2);
	parport_write_data(port, 0x55); udelay(2);
	parport_write_data(port, 0x00); udelay(2);
	parport_write_data(port, 0xff); udelay(2);
	s = parport_read_status(port) & (PARPORT_STATUS_BUSY
					  | PARPORT_STATUS_PAPEROUT
					  | PARPORT_STATUS_SELECT
					  | PARPORT_STATUS_ERROR);
	if (s != (PARPORT_STATUS_BUSY
		  | PARPORT_STATUS_PAPEROUT
		  | PARPORT_STATUS_SELECT
		  | PARPORT_STATUS_ERROR)) {
		DPRINTK(KERN_DEBUG "%s: assign_addrs: aa5500ff(%02x)\n",
			 port->name, s);
		return 0;
	}

	parport_write_data(port, 0x87); udelay(2);
	s = parport_read_status(port) & (PARPORT_STATUS_BUSY
					  | PARPORT_STATUS_PAPEROUT
					  | PARPORT_STATUS_SELECT
					  | PARPORT_STATUS_ERROR);
	if (s != (PARPORT_STATUS_SELECT | PARPORT_STATUS_ERROR)) {
		DPRINTK(KERN_DEBUG "%s: assign_addrs: aa5500ff87(%02x)\n",
			 port->name, s);
		return 0;
	}

	parport_write_data(port, 0x78); udelay(2);
	s = parport_read_status(port);

	for (daisy = 0;
	     (s & (PARPORT_STATUS_PAPEROUT|PARPORT_STATUS_SELECT))
		     == (PARPORT_STATUS_PAPEROUT|PARPORT_STATUS_SELECT)
		     && daisy < 4;
	     ++daisy) {
		parport_write_data(port, daisy);
		udelay(2);
		parport_frob_control(port,
				      PARPORT_CONTROL_STROBE,
				      PARPORT_CONTROL_STROBE);
		udelay(1);
		parport_frob_control(port, PARPORT_CONTROL_STROBE, 0);
		udelay(1);

		add_dev(numdevs++, port, daisy);

		/* See if this device thought it was the last in the
		 * chain. */
		if (!(s & PARPORT_STATUS_BUSY))
			break;

		/* We are seeing pass through status now. We see
		   last_dev from next device or if last_dev does not
		   work status lines from some non-daisy chain
		   device. */
		s = parport_read_status(port);
	}

	parport_write_data(port, 0xff); udelay(2);
	detected = numdevs - thisdev;
	DPRINTK(KERN_DEBUG "%s: Found %d daisy-chained devices\n", port->name,
		 detected);

	/* Ask the new devices to introduce themselves. */
	deviceid = kmalloc(1024, GFP_KERNEL);
	if (!deviceid) return 0;

	for (daisy = 0; thisdev < numdevs; thisdev++, daisy++)
		parport_device_id(thisdev, deviceid, 1024);

	kfree(deviceid);
	return detected;
}
开发者ID:Medvedroid，项目名称:OT_903D-kernel-2.6.35.7，代码行数:83，代码来源:daisy.c

示例9: port_read_status

static unsigned char port_read_status(struct parport *p)
{
	return parport_read_status(p);
}
开发者ID:ena30，项目名称:snake-os，代码行数:4，代码来源:i2c-parport.c

示例10: bit_lp_getsda

static int bit_lp_getsda(void *data)
{
	return parport_read_status((struct parport *) data) & I2C_SDAIN;
}
开发者ID:SimonKagstrom，项目名称:mci500h-linux-2.4.27，代码行数:4，代码来源:i2c-philips-par.c

示例11: parport_negotiate

int parport_negotiate (struct parport *port, int mode)
{
#ifndef CONFIG_PARPORT_1284
	if (mode == IEEE1284_MODE_COMPAT)
		return 0;
	printk (KERN_ERR "parport: IEEE1284 not supported in this kernel\n");
	return -1;
#else
	int m = mode & ~IEEE1284_ADDR;
	int r;
	unsigned char xflag;

	port = port->physport;

	
	if (port->ieee1284.mode == mode)
		return 0;

	
	if ((port->ieee1284.mode & ~IEEE1284_ADDR) == (mode & ~IEEE1284_ADDR)){
		port->ieee1284.mode = mode;
		return 0;
	}

	
	if (port->ieee1284.mode != IEEE1284_MODE_COMPAT)
		parport_ieee1284_terminate (port);

	if (mode == IEEE1284_MODE_COMPAT)
		
		return 0; 

	switch (mode) {
	case IEEE1284_MODE_ECPSWE:
		m = IEEE1284_MODE_ECP;
		break;
	case IEEE1284_MODE_EPPSL:
	case IEEE1284_MODE_EPPSWE:
		m = IEEE1284_MODE_EPP;
		break;
	case IEEE1284_MODE_BECP:
		return -ENOSYS; 
	}

	if (mode & IEEE1284_EXT_LINK)
		m = 1<<7; 

	port->ieee1284.phase = IEEE1284_PH_NEGOTIATION;

	
	parport_frob_control (port,
			      PARPORT_CONTROL_STROBE
			      | PARPORT_CONTROL_AUTOFD
			      | PARPORT_CONTROL_SELECT,
			      PARPORT_CONTROL_SELECT);
	udelay(1);

	
	parport_data_forward (port);
	parport_write_data (port, m);
	udelay (400); 

	
	parport_frob_control (port,
			      PARPORT_CONTROL_SELECT
			      | PARPORT_CONTROL_AUTOFD,
			      PARPORT_CONTROL_AUTOFD);

	
	if (parport_wait_peripheral (port,
				     PARPORT_STATUS_ERROR
				     | PARPORT_STATUS_SELECT
				     | PARPORT_STATUS_PAPEROUT
				     | PARPORT_STATUS_ACK,
				     PARPORT_STATUS_ERROR
				     | PARPORT_STATUS_SELECT
				     | PARPORT_STATUS_PAPEROUT)) {
		
		parport_frob_control (port,
				      PARPORT_CONTROL_SELECT
				      | PARPORT_CONTROL_AUTOFD,
				      PARPORT_CONTROL_SELECT);
		DPRINTK (KERN_DEBUG
			 "%s: Peripheral not IEEE1284 compliant (0x%02X)\n",
			 port->name, parport_read_status (port));
		port->ieee1284.phase = IEEE1284_PH_FWD_IDLE;
		return -1; 
	}

	
	parport_frob_control (port,
			      PARPORT_CONTROL_STROBE,
			      PARPORT_CONTROL_STROBE);

	
	udelay (5);
	parport_frob_control (port,
			      PARPORT_CONTROL_STROBE
			      | PARPORT_CONTROL_AUTOFD,
			      0);
//.........这里部分代码省略.........
开发者ID:DirtyDroidX，项目名称:android_kernel_htc_m8ul，代码行数:101，代码来源:ieee1284.c

示例12: getmiso

static inline int getmiso(struct spi_device *s)
{
	struct spi_lm70llp *pp = spidev_to_pp(s);
	return ((SIO == (parport_read_status(pp->port) & SIO)) ? 0 : 1 );
}
开发者ID:DirtyDroidX，项目名称:android_kernel_htc_m8ul，代码行数:5，代码来源:spi-lm70llp.c

示例13: bit_lp_getsda2

static int bit_lp_getsda2(void *data)
{
	return (parport_read_status((struct parport *) data) &
			             PARPORT_STATUS_BUSY) ? 0 : 1;
}
开发者ID:SimonKagstrom，项目名称:mci500h-linux-2.4.27，代码行数:5，代码来源:i2c-philips-par.c


注：本文中的parport_read_status函数示例由纯净天空整理自Github/MSDocs等开源代码及文档管理平台，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。