Handle INSN_CONFIG_DIO_INPUT, INSN_CONFIG_DIO_OUTPUT and
INSN_CONFIG_DIO_QUERY in data[0].
Signed-off-by: Ian Abbott <abbotti@xxxxxxxxx>
---
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 5cce1b5..b85c836 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);
--
1.7.8.2
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