From: H Hartley Sweeten Date: Fri, 17 Aug 2012 02:45:54 +0000 (-0700) Subject: staging: comedi: cb_pcidda: use attach_pci callback X-Git-Tag: firefly_0821_release~3680^2~1977^2~890 X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=2c0db01128e0d767c4071a5ad22376875bc5d545;p=firefly-linux-kernel-4.4.55.git staging: comedi: cb_pcidda: use attach_pci callback Convert this PCI driver to use the comedi PCI auto config attach mechanism by adding an 'attach_pci' callback function. Since the driver does not require any external configuration options, and the legacy 'attach' callback is now optional, remove it. Signed-off-by: H Hartley Sweeten Cc: Ian Abbott Signed-off-by: Greg Kroah-Hartman --- diff --git a/drivers/staging/comedi/drivers/cb_pcidda.c b/drivers/staging/comedi/drivers/cb_pcidda.c index 8a66e1ad48f4..c5944e383db6 100644 --- a/drivers/staging/comedi/drivers/cb_pcidda.c +++ b/drivers/staging/comedi/drivers/cb_pcidda.c @@ -56,14 +56,6 @@ Please report success/failure with other different cards to /* maximum number of ao channels for supported boards */ #define MAX_AO_CHANNELS 8 -/* PCI-DDA base addresses */ -#define DIGITALIO_BADRINDEX 2 - /* DIGITAL I/O is pci_dev->resource[2] */ -#define DIGITALIO_SIZE 8 - /* DIGITAL I/O uses 8 I/O port addresses */ -#define DAC_BADRINDEX 3 - /* DAC is pci_dev->resource[3] */ - /* Digital I/O registers */ #define PORT1A 0 /* PORT 1A DATA */ @@ -670,87 +662,56 @@ static int cb_pcidda_ao_winsn(struct comedi_device *dev, return 1; } -static struct pci_dev *cb_pcidda_find_pci_dev(struct comedi_device *dev, - struct comedi_devconfig *it) +static const void *cb_pcidda_find_boardinfo(struct comedi_device *dev, + struct pci_dev *pcidev) { - struct pci_dev *pcidev = NULL; - int bus = it->options[0]; - int slot = it->options[1]; + const struct cb_pcidda_board *thisboard; int i; - for_each_pci_dev(pcidev) { - if (bus || slot) { - if (bus != pcidev->bus->number || - slot != PCI_SLOT(pcidev->devfn)) - continue; - } - if (pcidev->vendor != PCI_VENDOR_ID_CB) - continue; - - for (i = 0; i < ARRAY_SIZE(cb_pcidda_boards); i++) { - if (cb_pcidda_boards[i].device_id != pcidev->device) - continue; - dev->board_ptr = cb_pcidda_boards + i; - return pcidev; - } + for (i = 0; i < ARRAY_SIZE(cb_pcidda_boards); i++) { + thisboard = &cb_pcidda_boards[i]; + if (thisboard->device_id != pcidev->device) + return thisboard; } - dev_err(dev->class_dev, - "No supported board found! (req. bus %d, slot %d)\n", - bus, slot); return NULL; } -static int cb_pcidda_attach(struct comedi_device *dev, - struct comedi_devconfig *it) +static int cb_pcidda_attach_pci(struct comedi_device *dev, + struct pci_dev *pcidev) { const struct cb_pcidda_board *thisboard; struct cb_pcidda_private *devpriv; - struct pci_dev *pcidev; struct comedi_subdevice *s; int index; int ret; + comedi_set_hw_dev(dev, &pcidev->dev); + + thisboard = cb_pcidda_find_boardinfo(dev, pcidev); + if (!pcidev) + return -ENODEV; + dev->board_ptr = thisboard; + dev->board_name = thisboard->name; + ret = alloc_private(dev, sizeof(*devpriv)); if (ret) return ret; devpriv = dev->private; - pcidev = cb_pcidda_find_pci_dev(dev, it); - if (!pcidev) - return -EIO; - comedi_set_hw_dev(dev, &pcidev->dev); - thisboard = comedi_board(dev); - - /* - * Enable PCI device and request regions. - */ - if (comedi_pci_enable(pcidev, thisboard->name)) { - dev_err(dev->class_dev, - "cb_pcidda: failed to enable PCI device and request regions\n"); - return -EIO; - } + ret = comedi_pci_enable(pcidev, dev->board_name); + if (ret) + return ret; -/* - * Allocate the I/O ports. - */ - devpriv->digitalio = pci_resource_start(pcidev, DIGITALIO_BADRINDEX); - devpriv->dac = pci_resource_start(pcidev, DAC_BADRINDEX); + devpriv->digitalio = pci_resource_start(pcidev, 2); + devpriv->dac = pci_resource_start(pcidev, 3); dev->iobase = devpriv->dac; -/* - * Warn about the status of the driver. - */ if (thisboard->status == 2) printk ("WARNING: DRIVER FOR THIS BOARD NOT CHECKED WITH MANUAL. " "WORKS ASSUMING FULL COMPATIBILITY WITH PCI-DDA08/12. " "PLEASE REPORT USAGE TO .\n"); -/* - * Initialize dev->board_name. - */ - dev->board_name = thisboard->name; - ret = comedi_alloc_subdevices(dev, 3); if (ret) return ret; @@ -785,28 +746,29 @@ static int cb_pcidda_attach(struct comedi_device *dev, for (index = 0; index < thisboard->ao_chans; index++) cb_pcidda_calibrate(dev, index, devpriv->ao_range[index]); - return 1; + dev_info(dev->class_dev, "%s attached\n", dev->board_name); + + return 0; } static void cb_pcidda_detach(struct comedi_device *dev) { struct pci_dev *pcidev = comedi_to_pci_dev(dev); - if (pcidev) { - if (dev->iobase) - comedi_pci_disable(pcidev); - pci_dev_put(pcidev); - } if (dev->subdevices) { subdev_8255_cleanup(dev, dev->subdevices + 1); subdev_8255_cleanup(dev, dev->subdevices + 2); } + if (pcidev) { + if (dev->iobase) + comedi_pci_disable(pcidev); + } } static struct comedi_driver cb_pcidda_driver = { .driver_name = "cb_pcidda", .module = THIS_MODULE, - .attach = cb_pcidda_attach, + .attach_pci = cb_pcidda_attach_pci, .detach = cb_pcidda_detach, };