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Commit f72196ec authored by H Hartley Sweeten's avatar H Hartley Sweeten Committed by Greg Kroah-Hartman
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staging: comedi: pcl816: define the status register bits 



Define the bits in the status register.

Signed-off-by: default avatarH Hartley Sweeten <hsweeten@visionengravers.com>
Reviewed-by: default avatarIan Abbott <abbotti@mev.co.uk>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent 8d0b5e15

drivers/staging/comedi/drivers/pcl816.c

+13 −7
Original line number Diff line number Diff line
@@ -49,6 +49,15 @@ Configuration Options: 
#define PCL816_TIMER_BASE			0x04

#define PCL816_AI_LSB_REG			0x08

#define PCL816_AI_MSB_REG			0x09

#define PCL816_STATUS_REG			0x0d

#define PCL816_STATUS_NEXT_CHAN_MASK		(0xf << 0)

#define PCL816_STATUS_INTSRC_MASK		(3 << 4)

#define PCL816_STATUS_INTSRC_SLOT0		(0 << 4)

#define PCL816_STATUS_INTSRC_SLOT1		(1 << 4)

#define PCL816_STATUS_INTSRC_SLOT2		(2 << 4)

#define PCL816_STATUS_INTSRC_DMA		(3 << 4)

#define PCL816_STATUS_INTACT			(1 << 6)

#define PCL816_STATUS_DRDY			(1 << 7)



/* R: A/D high byte W: A/D range control */

#define PCL816_RANGE 9
@@ -59,9 +68,6 @@ Configuration Options: 
/* R/W: operation control register */

#define PCL816_CONTROL 12



/* R: return status byte  W: set DMA/IRQ */

#define PCL816_STATUS 13

#define PCL816_STATUS_DRDY_MASK 0x80



#define MAGIC_DMA_WORD 0x5a5a
@@ -235,8 +241,8 @@ static int pcl816_ai_eoc(struct comedi_device *dev, 
{

	unsigned int status;



	status = inb(dev->iobase + PCL816_STATUS);

	if ((status & PCL816_STATUS_DRDY_MASK) == 0)

	status = inb(dev->iobase + PCL816_STATUS_REG);

	if ((status & PCL816_STATUS_DRDY) == 0)

		return 0;

	return -EBUSY;

}
@@ -432,7 +438,7 @@ static int pcl816_ai_cmd(struct comedi_device *dev, struct comedi_subdevice *s) 
		outb(0x32, dev->iobase + PCL816_CONTROL);



		/*  write irq and DMA to card */

		outb(dmairq, dev->iobase + PCL816_STATUS);

		outb(dmairq, dev->iobase + PCL816_STATUS_REG);

		break;



	default:
@@ -440,7 +446,7 @@ static int pcl816_ai_cmd(struct comedi_device *dev, struct comedi_subdevice *s) 
		outb(0x34, dev->iobase + PCL816_CONTROL);



		/*  write irq to card */

		outb(dmairq, dev->iobase + PCL816_STATUS);

		outb(dmairq, dev->iobase + PCL816_STATUS_REG);

		break;

	}