diff options
Diffstat (limited to 'drivers/staging/comedi/drivers/amplc_dio200_common.c')
| -rw-r--r-- | drivers/staging/comedi/drivers/amplc_dio200_common.c | 44 |
1 files changed, 18 insertions, 26 deletions
diff --git a/drivers/staging/comedi/drivers/amplc_dio200_common.c b/drivers/staging/comedi/drivers/amplc_dio200_common.c index 649fc69724fb..c1f723e86146 100644 --- a/drivers/staging/comedi/drivers/amplc_dio200_common.c +++ b/drivers/staging/comedi/drivers/amplc_dio200_common.c @@ -19,8 +19,8 @@ GNU General Public License for more details. */ +#include <linux/module.h> #include <linux/interrupt.h> -#include <linux/slab.h> #include "../comedidev.h" @@ -976,34 +976,26 @@ static int dio200_subdev_8255_config(struct comedi_device *dev, struct comedi_insn *insn, unsigned int *data) { + unsigned int chan = CR_CHAN(insn->chanspec); unsigned int mask; - unsigned int bits; - - mask = 1 << CR_CHAN(insn->chanspec); - if (mask & 0x0000ff) - bits = 0x0000ff; - else if (mask & 0x00ff00) - bits = 0x00ff00; - else if (mask & 0x0f0000) - bits = 0x0f0000; + int ret; + + if (chan < 8) + mask = 0x0000ff; + else if (chan < 16) + mask = 0x00ff00; + else if (chan < 20) + mask = 0x0f0000; else - bits = 0xf00000; - switch (data[0]) { - case INSN_CONFIG_DIO_INPUT: - s->io_bits &= ~bits; - break; - case INSN_CONFIG_DIO_OUTPUT: - s->io_bits |= bits; - break; - case INSN_CONFIG_DIO_QUERY: - data[1] = (s->io_bits & bits) ? COMEDI_OUTPUT : COMEDI_INPUT; - return insn->n; - break; - default: - return -EINVAL; - } + mask = 0xf00000; + + ret = comedi_dio_insn_config(dev, s, insn, data, mask); + if (ret) + return ret; + dio200_subdev_8255_set_dir(dev, s); - return 1; + + return insn->n; } /* |