evie/android_kernel_oneplus_msm8998
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity Actions

staging: comedi: pcl816: define the status register bits

Browse source 
Define the bits in the status register.

Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Reviewed-by: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
H Hartley Sweeten 2014-03-04 11:30:13 -07:00 • committed by Greg Kroah-Hartman
parent 8d0b5e15df
commit f72196eca4
1 changed files with 13 additions and 7 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

20
drivers/staging/comedi/drivers/pcl816.c
View file

@ -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;
}