diff options
| author | Ian Abbott <abbotti@mev.co.uk> | 2012-01-09 15:48:35 +0000 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2012-02-09 09:55:53 -0800 |
| commit | 8383def69b8629df052f917acb844381bdd6e000 (patch) | |
| tree | c45a2a0472fd9851d34c282014bb40da7994de91 /drivers/staging/comedi | |
| parent | 586b9839273b3b58b28a26e4518be13366cecaeb (diff) | |
staging: comedi: dt2801: do INSN_CONFIG properly for DIO subdevice.
Handle INSN_CONFIG_DIO_INPUT, INSN_CONFIG_DIO_OUTPUT and
INSN_CONFIG_DIO_QUERY in data[0].
Signed-off-by: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/staging/comedi')
| -rw-r--r-- | drivers/staging/comedi/drivers/dt2801.c | 12 |
1 files changed, 10 insertions, 2 deletions
diff --git a/drivers/staging/comedi/drivers/dt2801.c b/drivers/staging/comedi/drivers/dt2801.c index 5cce1b5f4484..b85c8366a396 100644 --- a/drivers/staging/comedi/drivers/dt2801.c +++ b/drivers/staging/comedi/drivers/dt2801.c @@ -720,12 +720,20 @@ static int dt2801_dio_insn_config(struct comedi_device *dev, which = 1; /* configure */ - if (data[0]) { + switch (data[0]) { + case INSN_CONFIG_DIO_OUTPUT: s->io_bits = 0xff; dt2801_writecmd(dev, DT_C_SET_DIGOUT); - } else { + break; + case INSN_CONFIG_DIO_INPUT: s->io_bits = 0; dt2801_writecmd(dev, DT_C_SET_DIGIN); + break; + case INSN_CONFIG_DIO_QUERY: + data[1] = s->io_bits ? COMEDI_OUTPUT : COMEDI_INPUT; + return insn->n; + default: + return -EINVAL; } dt2801_writedata(dev, which); |