diff options
| author | H Hartley Sweeten <hsweeten@visionengravers.com> | 2014-02-10 11:49:18 -0700 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2014-02-14 09:28:45 -0800 |
| commit | c3ce086e15e67dc140371a0bacced4cf8a012386 (patch) | |
| tree | 3af7ad2e1ea227c1b01222c32882d66e09fd1cdf | |
| parent | 6976a449cd201b210aa2804aecde590d5610a71b (diff) | |
staging: comedi: das08: use comedi_timeout()
Use comedi_timeout() to wait for the analog input end-of-conversion.
Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Cc: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -rw-r--r-- | drivers/staging/comedi/drivers/das08.c | 26 |
1 files changed, 18 insertions, 8 deletions
diff --git a/drivers/staging/comedi/drivers/das08.c b/drivers/staging/comedi/drivers/das08.c index 3c0e45837c72..b9916315adc6 100644 --- a/drivers/staging/comedi/drivers/das08.c +++ b/drivers/staging/comedi/drivers/das08.c @@ -201,17 +201,29 @@ static const int *const das08_gainlists[] = { das08_pgm_gainlist, }; -#define TIMEOUT 100000 +static int das08_ai_eoc(struct comedi_device *dev, + struct comedi_subdevice *s, + struct comedi_insn *insn, + unsigned long context) +{ + unsigned int status; + + status = inb(dev->iobase + DAS08_STATUS); + if ((status & DAS08_EOC) == 0) + return 0; + return -EBUSY; +} static int das08_ai_rinsn(struct comedi_device *dev, struct comedi_subdevice *s, struct comedi_insn *insn, unsigned int *data) { const struct das08_board_struct *thisboard = comedi_board(dev); struct das08_private_struct *devpriv = dev->private; - int i, n; + int n; int chan; int range; int lsb, msb; + int ret; chan = CR_CHAN(insn->chanspec); range = CR_RANGE(insn->chanspec); @@ -244,14 +256,12 @@ static int das08_ai_rinsn(struct comedi_device *dev, struct comedi_subdevice *s, /* trigger conversion */ outb_p(0, dev->iobase + DAS08_TRIG_12BIT); - for (i = 0; i < TIMEOUT; i++) { - if (!(inb(dev->iobase + DAS08_STATUS) & DAS08_EOC)) - break; - } - if (i == TIMEOUT) { + ret = comedi_timeout(dev, s, insn, das08_ai_eoc, 0); + if (ret) { dev_err(dev->class_dev, "timeout\n"); - return -ETIME; + return ret; } + msb = inb(dev->iobase + DAS08_MSB); lsb = inb(dev->iobase + DAS08_LSB); if (thisboard->ai_encoding == das08_encode12) { |