diff options
Diffstat (limited to 'drivers/staging/comedi/drivers/8255.c')
-rw-r--r-- | drivers/staging/comedi/drivers/8255.c | 45 |
1 files changed, 17 insertions, 28 deletions
diff --git a/drivers/staging/comedi/drivers/8255.c b/drivers/staging/comedi/drivers/8255.c index 94e17500150f..2f070fdbbb1d 100644 --- a/drivers/staging/comedi/drivers/8255.c +++ b/drivers/staging/comedi/drivers/8255.c @@ -73,10 +73,9 @@ I/O port base address can be found in the output of 'lspci -v'. will copy the latched value to a Comedi buffer. */ +#include <linux/module.h> #include "../comedidev.h" -#include <linux/ioport.h> - #include "comedi_fc.h" #include "8255.h" @@ -185,39 +184,29 @@ static void subdev_8255_do_config(struct comedi_device *dev, static int subdev_8255_insn_config(struct comedi_device *dev, struct comedi_subdevice *s, - struct comedi_insn *insn, unsigned int *data) + struct comedi_insn *insn, + unsigned int *data) { + unsigned int chan = CR_CHAN(insn->chanspec); unsigned int mask; - unsigned int bits; + int ret; - mask = 1 << CR_CHAN(insn->chanspec); - if (mask & 0x0000ff) - bits = 0x0000ff; - else if (mask & 0x00ff00) - bits = 0x00ff00; - else if (mask & 0x0f0000) - bits = 0x0f0000; + 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; subdev_8255_do_config(dev, s); - return 1; + return insn->n; } static int subdev_8255_cmdtest(struct comedi_device *dev, |