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staging: comedi: pcl812: define the status register bits

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Define the bits in the status register.

Writing any value to the status register clears any pending interrupt.
For aesthetics, rename the status register and remove the "clrint"
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 11:30:14 -07:00 committed by Greg Kroah-Hartman
parent f72196eca4
commit 598e61e6dd
1 changed files with 5 additions and 8 deletions
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13
drivers/staging/comedi/drivers/pcl812.c
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@ -139,7 +139,8 @@
#define PCL812_AO_MSB_REG(x) (0x05 + ((x) * 2))
#define PCL812_DI_LSB_REG 0x06
#define PCL812_DI_MSB_REG 0x07
#define PCL812_CLRINT 8
#define PCL812_STATUS_REG 0x08
#define PCL812_STATUS_DRDY (1 << 5)
#define PCL812_GAIN 9
#define PCL812_MUX 10
#define PCL812_MODE 11
@ -148,10 +149,6 @@
#define PCL812_DO_LSB_REG 0x0d
#define PCL812_DO_MSB_REG 0x0e
#define ACL8216_STATUS 8 /* 5. bit signalize data ready */
#define ACL8216_DRDY 0x20 /* =0 data ready */
#define MAX_CHANLIST_LEN 256 /* length of scan list */
static const struct comedi_lrange range_pcl812pg_ai = {
@ -639,7 +636,7 @@ static void pcl812_ai_setup_next_dma(struct comedi_device *dev,
static void pcl812_ai_clear_eoc(struct comedi_device *dev)
{
/* writing any value clears the interrupt request */
outb(0, dev->iobase + PCL812_CLRINT);
outb(0, dev->iobase + PCL812_STATUS_REG);
}
static void pcl812_ai_soft_trig(struct comedi_device *dev)
@ -667,8 +664,8 @@ static int pcl812_ai_eoc(struct comedi_device *dev,
unsigned int status;
if (s->maxdata > 0x0fff) {
status = inb(dev->iobase + ACL8216_STATUS);
if ((status & ACL8216_DRDY) == 0)
status = inb(dev->iobase + PCL812_STATUS_REG);
if ((status & PCL812_STATUS_DRDY) == 0)
return 0;
} else {
status = inb(dev->iobase + PCL812_AI_MSB_REG);