diff options
Diffstat (limited to 'drivers/staging/comedi/drivers/skel.c')
| -rw-r--r-- | drivers/staging/comedi/drivers/skel.c | 49 |
1 files changed, 22 insertions, 27 deletions
diff --git a/drivers/staging/comedi/drivers/skel.c b/drivers/staging/comedi/drivers/skel.c index 06aee302bbc2..9e964950a560 100644 --- a/drivers/staging/comedi/drivers/skel.c +++ b/drivers/staging/comedi/drivers/skel.c @@ -67,6 +67,7 @@ Configuration Options: * options that are used with comedi_config. */ +#include <linux/module.h> #include <linux/pci.h> #include "../comedidev.h" @@ -361,31 +362,27 @@ static int skel_dio_insn_bits(struct comedi_device *dev, static int skel_dio_insn_config(struct comedi_device *dev, struct comedi_subdevice *s, - struct comedi_insn *insn, unsigned int *data) + struct comedi_insn *insn, + unsigned int *data) { - int chan = CR_CHAN(insn->chanspec); + int ret; - /* The input or output configuration of each digital line is - * configured by a special insn_config instruction. chanspec - * contains the channel to be changed, and data[0] contains the - * value COMEDI_INPUT or COMEDI_OUTPUT. */ - switch (data[0]) { - case INSN_CONFIG_DIO_OUTPUT: - s->io_bits |= 1 << chan; - break; - case INSN_CONFIG_DIO_INPUT: - s->io_bits &= ~(1 << chan); - break; - case INSN_CONFIG_DIO_QUERY: - data[1] = - (s->io_bits & (1 << chan)) ? COMEDI_OUTPUT : COMEDI_INPUT; - return insn->n; - break; - default: - return -EINVAL; - break; - } - /* outw(s->io_bits,dev->iobase + SKEL_DIO_CONFIG); */ + /* + * The input or output configuration of each digital line is + * configured by special insn_config instructions. + * + * chanspec contains the channel to be changed + * data[0] contains the instruction to perform on the channel + * + * Normally the core provided comedi_dio_insn_config() function + * can be used to handle the boilerplpate. + */ + ret = comedi_dio_insn_config(dev, s, insn, data, 0); + if (ret) + return ret; + + /* Update the hardware to the new configuration */ + /* outw(s->io_bits, dev->iobase + SKEL_DIO_CONFIG); */ return insn->n; } @@ -484,10 +481,9 @@ static int skel_attach(struct comedi_device *dev, struct comedi_devconfig *it) /* dev->board_name = thisboard->name; */ /* Allocate the private data */ - devpriv = kzalloc(sizeof(*devpriv), GFP_KERNEL); + devpriv = comedi_alloc_devpriv(dev, sizeof(*devpriv)); if (!devpriv) return -ENOMEM; - dev->private = devpriv; /* * Supported boards are usually either auto-attached via the @@ -558,10 +554,9 @@ static int skel_auto_attach(struct comedi_device *dev, dev->board_name = thisboard->name; /* Allocate the private data */ - devpriv = kzalloc(sizeof(*devpriv), GFP_KERNEL); + devpriv = comedi_alloc_devpriv(dev, sizeof(*devpriv)); if (!devpriv) return -ENOMEM; - dev->private = devpriv; /* Enable the PCI device. */ ret = comedi_pci_enable(dev); |