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https://github.com/rd-stuffs/msm-4.14.git
synced 2025-02-20 11:45:48 +08:00
staging: comedi: refactor dt3000 driver to remove forward declarations
Move the module_init/module_exit routines and the associated struct comedi_driver and other variables to the end of the source. This is more typical of how other drivers are written. Also, refactor a couple of the pci helper functions used during the attach. The removes the need for the forward declarations. Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com> Cc: Ian Abbott <abbotti@mev.co.uk> Cc: Mori Hess <fmhess@users.sourceforge.net> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
H Hartley Sweeten
Greg Kroah-Hartman
parent
de9f2db41e
commit
15362c5ec4
@ -164,19 +164,6 @@ static const struct dt3k_boardtype dt3k_boardtypes[] = {
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#define n_dt3k_boards sizeof(dt3k_boardtypes)/sizeof(struct dt3k_boardtype)
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#define this_board ((const struct dt3k_boardtype *)dev->board_ptr)
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static DEFINE_PCI_DEVICE_TABLE(dt3k_pci_table) = {
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{ PCI_DEVICE(PCI_VENDOR_ID_DT, 0x0022) },
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{ PCI_DEVICE(PCI_VENDOR_ID_DT, 0x0027) },
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{ PCI_DEVICE(PCI_VENDOR_ID_DT, 0x0023) },
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{ PCI_DEVICE(PCI_VENDOR_ID_DT, 0x0024) },
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{ PCI_DEVICE(PCI_VENDOR_ID_DT, 0x0028) },
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{ PCI_DEVICE(PCI_VENDOR_ID_DT, 0x0025) },
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{ PCI_DEVICE(PCI_VENDOR_ID_DT, 0x0026) },
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{ 0 }
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};
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MODULE_DEVICE_TABLE(pci, dt3k_pci_table);
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#define DT3000_SIZE (4*0x1000)
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/* dual-ported RAM location definitions */
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@ -276,54 +263,6 @@ struct dt3k_private {
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#define devpriv ((struct dt3k_private *)dev->private)
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static int dt3000_attach(struct comedi_device *dev,
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struct comedi_devconfig *it);
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static int dt3000_detach(struct comedi_device *dev);
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static struct comedi_driver driver_dt3000 = {
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.driver_name = "dt3000",
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.module = THIS_MODULE,
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.attach = dt3000_attach,
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.detach = dt3000_detach,
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};
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static int __devinit driver_dt3000_pci_probe(struct pci_dev *dev,
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const struct pci_device_id *ent)
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{
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return comedi_pci_auto_config(dev, &driver_dt3000);
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}
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static void __devexit driver_dt3000_pci_remove(struct pci_dev *dev)
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{
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comedi_pci_auto_unconfig(dev);
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}
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static struct pci_driver driver_dt3000_pci_driver = {
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.id_table = dt3k_pci_table,
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.probe = &driver_dt3000_pci_probe,
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.remove = __devexit_p(&driver_dt3000_pci_remove)
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};
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static int __init driver_dt3000_init_module(void)
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{
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int retval;
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retval = comedi_driver_register(&driver_dt3000);
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if (retval < 0)
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return retval;
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driver_dt3000_pci_driver.name = (char *)driver_dt3000.driver_name;
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return pci_register_driver(&driver_dt3000_pci_driver);
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}
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static void __exit driver_dt3000_cleanup_module(void)
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{
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pci_unregister_driver(&driver_dt3000_pci_driver);
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comedi_driver_unregister(&driver_dt3000);
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}
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module_init(driver_dt3000_init_module);
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module_exit(driver_dt3000_cleanup_module);
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static void dt3k_ai_empty_fifo(struct comedi_device *dev,
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struct comedi_subdevice *s);
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static int dt3k_ns_to_timer(unsigned int timer_base, unsigned int *arg,
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@ -841,7 +780,77 @@ static int dt3k_mem_insn_read(struct comedi_device *dev,
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return i;
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}
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static int dt_pci_probe(struct comedi_device *dev, int bus, int slot);
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static int setup_pci(struct comedi_device *dev)
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{
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resource_size_t addr;
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int ret;
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ret = comedi_pci_enable(devpriv->pci_dev, "dt3000");
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if (ret < 0)
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return ret;
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addr = pci_resource_start(devpriv->pci_dev, 0);
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devpriv->phys_addr = addr;
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devpriv->io_addr = ioremap(devpriv->phys_addr, DT3000_SIZE);
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if (!devpriv->io_addr)
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return -ENOMEM;
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#if DEBUG
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printk("0x%08llx mapped to %p, ",
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(unsigned long long)devpriv->phys_addr, devpriv->io_addr);
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#endif
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return 0;
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}
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static struct pci_dev *dt_pci_find_device(struct pci_dev *from, int *board)
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{
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int i;
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for (from = pci_get_device(PCI_VENDOR_ID_DT, PCI_ANY_ID, from);
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from != NULL;
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from = pci_get_device(PCI_VENDOR_ID_DT, PCI_ANY_ID, from)) {
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for (i = 0; i < n_dt3k_boards; i++) {
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if (from->device == dt3k_boardtypes[i].device_id) {
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*board = i;
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return from;
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}
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}
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printk
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("unknown Data Translation PCI device found with device_id=0x%04x\n",
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from->device);
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}
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*board = -1;
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return from;
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}
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static int dt_pci_probe(struct comedi_device *dev, int bus, int slot)
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{
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int board;
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int ret;
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struct pci_dev *pcidev;
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pcidev = NULL;
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while ((pcidev = dt_pci_find_device(pcidev, &board)) != NULL) {
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if ((bus == 0 && slot == 0) ||
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(pcidev->bus->number == bus &&
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PCI_SLOT(pcidev->devfn) == slot)) {
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break;
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}
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}
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devpriv->pci_dev = pcidev;
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if (board >= 0)
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dev->board_ptr = dt3k_boardtypes + board;
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if (!devpriv->pci_dev)
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return 0;
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ret = setup_pci(dev);
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if (ret < 0)
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return ret;
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return 1;
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}
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static int dt3000_attach(struct comedi_device *dev, struct comedi_devconfig *it)
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{
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@ -949,85 +958,65 @@ static int dt3000_detach(struct comedi_device *dev)
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if (devpriv->io_addr)
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iounmap(devpriv->io_addr);
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}
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/* XXX */
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return 0;
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}
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static struct pci_dev *dt_pci_find_device(struct pci_dev *from, int *board);
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static int setup_pci(struct comedi_device *dev);
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static struct comedi_driver driver_dt3000 = {
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.driver_name = "dt3000",
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.module = THIS_MODULE,
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.attach = dt3000_attach,
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.detach = dt3000_detach,
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};
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static int dt_pci_probe(struct comedi_device *dev, int bus, int slot)
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static int __devinit driver_dt3000_pci_probe(struct pci_dev *dev,
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const struct pci_device_id *ent)
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{
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int board;
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int ret;
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struct pci_dev *pcidev;
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pcidev = NULL;
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while ((pcidev = dt_pci_find_device(pcidev, &board)) != NULL) {
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if ((bus == 0 && slot == 0) ||
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(pcidev->bus->number == bus &&
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PCI_SLOT(pcidev->devfn) == slot)) {
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break;
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}
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}
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devpriv->pci_dev = pcidev;
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if (board >= 0)
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dev->board_ptr = dt3k_boardtypes + board;
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if (!devpriv->pci_dev)
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return 0;
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ret = setup_pci(dev);
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if (ret < 0)
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return ret;
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return 1;
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return comedi_pci_auto_config(dev, &driver_dt3000);
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}
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static int setup_pci(struct comedi_device *dev)
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static void __devexit driver_dt3000_pci_remove(struct pci_dev *dev)
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{
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resource_size_t addr;
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int ret;
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ret = comedi_pci_enable(devpriv->pci_dev, "dt3000");
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if (ret < 0)
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return ret;
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addr = pci_resource_start(devpriv->pci_dev, 0);
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devpriv->phys_addr = addr;
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devpriv->io_addr = ioremap(devpriv->phys_addr, DT3000_SIZE);
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if (!devpriv->io_addr)
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return -ENOMEM;
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#if DEBUG
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printk("0x%08llx mapped to %p, ",
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(unsigned long long)devpriv->phys_addr, devpriv->io_addr);
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#endif
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return 0;
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comedi_pci_auto_unconfig(dev);
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}
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static struct pci_dev *dt_pci_find_device(struct pci_dev *from, int *board)
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{
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int i;
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static DEFINE_PCI_DEVICE_TABLE(dt3k_pci_table) = {
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{ PCI_DEVICE(PCI_VENDOR_ID_DT, 0x0022) },
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{ PCI_DEVICE(PCI_VENDOR_ID_DT, 0x0027) },
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{ PCI_DEVICE(PCI_VENDOR_ID_DT, 0x0023) },
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{ PCI_DEVICE(PCI_VENDOR_ID_DT, 0x0024) },
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{ PCI_DEVICE(PCI_VENDOR_ID_DT, 0x0028) },
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{ PCI_DEVICE(PCI_VENDOR_ID_DT, 0x0025) },
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{ PCI_DEVICE(PCI_VENDOR_ID_DT, 0x0026) },
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{ 0 }
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};
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MODULE_DEVICE_TABLE(pci, dt3k_pci_table);
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for (from = pci_get_device(PCI_VENDOR_ID_DT, PCI_ANY_ID, from);
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from != NULL;
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from = pci_get_device(PCI_VENDOR_ID_DT, PCI_ANY_ID, from)) {
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for (i = 0; i < n_dt3k_boards; i++) {
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if (from->device == dt3k_boardtypes[i].device_id) {
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*board = i;
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return from;
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}
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}
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printk
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("unknown Data Translation PCI device found with device_id=0x%04x\n",
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from->device);
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}
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*board = -1;
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return from;
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static struct pci_driver driver_dt3000_pci_driver = {
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.id_table = dt3k_pci_table,
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.probe = driver_dt3000_pci_probe,
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.remove = __devexit_p(driver_dt3000_pci_remove),
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};
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static int __init driver_dt3000_init_module(void)
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{
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int retval;
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retval = comedi_driver_register(&driver_dt3000);
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if (retval < 0)
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return retval;
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driver_dt3000_pci_driver.name = (char *)driver_dt3000.driver_name;
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return pci_register_driver(&driver_dt3000_pci_driver);
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}
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module_init(driver_dt3000_init_module);
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static void __exit driver_dt3000_cleanup_module(void)
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{
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pci_unregister_driver(&driver_dt3000_pci_driver);
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comedi_driver_unregister(&driver_dt3000);
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}
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module_exit(driver_dt3000_cleanup_module);
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MODULE_AUTHOR("Comedi http://www.comedi.org");
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MODULE_DESCRIPTION("Comedi low-level driver");
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