diff options
author | H Hartley Sweeten <hsweeten@visionengravers.com> | 2013-08-30 11:05:58 -0700 |
---|---|---|
committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2013-09-17 07:47:40 -0700 |
commit | 97f4289ad08cffe55de06d4ac4f89ac540450aee (patch) | |
tree | 9aac1e13dd79ecc23b38d6955f80bdcf68b020df /drivers/staging/comedi/drivers/amplc_pc263.c | |
parent | 77e9487bdbb7770b359aaa09e964fda57227ad97 (diff) |
staging: comedi: drivers: use comedi_dio_update_state() for simple cases
Use comedi_dio_update_state() to handle the boilerplate code to update
the subdevice s->state for simple cases where the hardware is updated
when any channel is modified.
Also, fix a bug in the amplc_pc263 and amplc_pci263 drivers where the
current state is not returned in data[1].
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>
Diffstat (limited to 'drivers/staging/comedi/drivers/amplc_pc263.c')
-rw-r--r-- | drivers/staging/comedi/drivers/amplc_pc263.c | 17 |
1 files changed, 8 insertions, 9 deletions
diff --git a/drivers/staging/comedi/drivers/amplc_pc263.c b/drivers/staging/comedi/drivers/amplc_pc263.c index e7108045f553..5b4b5ab34e2e 100644 --- a/drivers/staging/comedi/drivers/amplc_pc263.c +++ b/drivers/staging/comedi/drivers/amplc_pc263.c @@ -57,17 +57,16 @@ static const struct pc263_board pc263_boards[] = { static int pc263_do_insn_bits(struct comedi_device *dev, struct comedi_subdevice *s, - struct comedi_insn *insn, unsigned int *data) + struct comedi_insn *insn, + unsigned int *data) { - /* The insn data is a mask in data[0] and the new data - * in data[1], each channel cooresponding to a bit. */ - if (data[0]) { - s->state &= ~data[0]; - s->state |= data[0] & data[1]; - /* Write out the new digital output lines */ - outb(s->state & 0xFF, dev->iobase); - outb(s->state >> 8, dev->iobase + 1); + if (comedi_dio_update_state(s, data)) { + outb(s->state & 0xff, dev->iobase); + outb((s->state >> 8) & 0xff, dev->iobase + 1); } + + data[1] = s->state; + return insn->n; } |