diff options
author | H Hartley Sweeten <hartleys@visionengravers.com> | 2012-08-16 19:55:01 -0700 |
---|---|---|
committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2012-08-17 08:17:36 -0700 |
commit | 22f2f541d06a874d8a5b228fca0186e333a1e351 (patch) | |
tree | 146fa32e11706b98cc82310432ce374d93be88ea /drivers/staging | |
parent | aee815b53bca1cfa092ecd742fc59512b8030336 (diff) |
staging: comedi: cb_pcimdda: use attach_pci callback
Convert this PCI driver to use the comedi PCI auto config attach
mechanism by adding an 'attach_pci' callback function.
This driver does use an external configuration option to determine
the analog output range which is controlled by a jumper on the board.
In order to remove the legacy 'attach' callback, an assumption is made
that the jumper is in the factory setting position for +/-5V outputs.
This does not effect the operation of the board just the range info
that is returned to the user.
A sysfs method will be investigated to allow the user to change the
range.
Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Cc: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/staging')
-rw-r--r-- | drivers/staging/comedi/drivers/cb_pcimdda.c | 65 |
1 files changed, 14 insertions, 51 deletions
diff --git a/drivers/staging/comedi/drivers/cb_pcimdda.c b/drivers/staging/comedi/drivers/cb_pcimdda.c index 350c8078cded..ea96514254a1 100644 --- a/drivers/staging/comedi/drivers/cb_pcimdda.c +++ b/drivers/staging/comedi/drivers/cb_pcimdda.c @@ -57,12 +57,7 @@ output modes on the board: then issue one comedi_data_read() on any channel on the AO subdevice to initiate the simultaneous XFER. -Configuration Options: - [0] PCI bus (optional) - [1] PCI slot (optional) - [2] analog output range jumper setting - 0 == +/- 5 V - 1 == +/- 10 V +Configuration Options: not applicable, uses PCI auto config */ /* @@ -157,47 +152,21 @@ static int cb_pcimdda_ao_rinsn(struct comedi_device *dev, return insn->n; } -static struct pci_dev *cb_pcimdda_probe(struct comedi_device *dev, - struct comedi_devconfig *it) -{ - struct pci_dev *pcidev = NULL; - - for_each_pci_dev(pcidev) { - if (pcidev->vendor != PCI_VENDOR_ID_COMPUTERBOARDS) - continue; - if (pcidev->device != PCI_ID_PCIM_DDA06_16) - continue; - if (it->options[0] || it->options[1]) { - if (pcidev->bus->number != it->options[0] || - PCI_SLOT(pcidev->devfn) != it->options[1]) { - continue; - } - } - - return pcidev; - } - return NULL; -} - -static int cb_pcimdda_attach(struct comedi_device *dev, - struct comedi_devconfig *it) +static int cb_pcimdda_attach_pci(struct comedi_device *dev, + struct pci_dev *pcidev) { struct cb_pcimdda_private *devpriv; - struct pci_dev *pcidev; struct comedi_subdevice *s; int ret; + comedi_set_hw_dev(dev, &pcidev->dev); + dev->board_name = dev->driver->driver_name; + ret = alloc_private(dev, sizeof(*devpriv)); if (ret) return ret; devpriv = dev->private; - pcidev = cb_pcimdda_probe(dev, it); - if (!pcidev) - return -EIO; - comedi_set_hw_dev(dev, &pcidev->dev); - dev->board_name = dev->driver->driver_name; - ret = comedi_pci_enable(pcidev, dev->board_name); if (ret) return ret; @@ -208,19 +177,14 @@ static int cb_pcimdda_attach(struct comedi_device *dev, return ret; s = dev->subdevices + 0; - /* analog output subdevice */ - s->type = COMEDI_SUBD_AO; - s->subdev_flags = SDF_WRITABLE | SDF_READABLE; - s->n_chan = 6; - s->maxdata = 0xffff; - /* this is hard-coded here */ - if (it->options[2]) - s->range_table = &range_bipolar10; - else - s->range_table = &range_bipolar5; - s->insn_write = &cb_pcimdda_ao_winsn; - s->insn_read = &cb_pcimdda_ao_rinsn; + s->type = COMEDI_SUBD_AO; + s->subdev_flags = SDF_WRITABLE | SDF_READABLE; + s->n_chan = 6; + s->maxdata = 0xffff; + s->range_table = &range_bipolar5; + s->insn_write = cb_pcimdda_ao_winsn; + s->insn_read = cb_pcimdda_ao_rinsn; s = dev->subdevices + 1; /* digital i/o subdevice */ @@ -243,14 +207,13 @@ static void cb_pcimdda_detach(struct comedi_device *dev) if (pcidev) { if (dev->iobase) comedi_pci_disable(pcidev); - pci_dev_put(pcidev); } } static struct comedi_driver cb_pcimdda_driver = { .driver_name = "cb_pcimdda", .module = THIS_MODULE, - .attach = cb_pcimdda_attach, + .attach_pci = cb_pcimdda_attach_pci, .detach = cb_pcimdda_detach, }; |