diff options
Diffstat (limited to 'drivers/pnp/pnpacpi')
| -rw-r--r-- | drivers/pnp/pnpacpi/core.c | 54 |
1 files changed, 46 insertions, 8 deletions
diff --git a/drivers/pnp/pnpacpi/core.c b/drivers/pnp/pnpacpi/core.c index 62eda5d59024..7eb8275185b6 100644 --- a/drivers/pnp/pnpacpi/core.c +++ b/drivers/pnp/pnpacpi/core.c @@ -3,7 +3,7 @@ * * Copyright (c) 2004 Matthieu Castet <castet.matthieu@free.fr> * Copyright (c) 2004 Li Shaohua <shaohua.li@intel.com> - * + * * This program is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License as published by the * Free Software Foundation; either version 2, or (at your option) any @@ -18,7 +18,7 @@ * along with this program; if not, write to the Free Software * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */ - + #include <linux/acpi.h> #include <linux/pnp.h> #include <acpi/acpi_bus.h> @@ -82,7 +82,7 @@ static void __init pnpidacpi_to_pnpid(char *id, char *str) static int pnpacpi_get_resources(struct pnp_dev * dev, struct pnp_resource_table * res) { acpi_status status; - status = pnpacpi_parse_allocated_resource((acpi_handle)dev->data, + status = pnpacpi_parse_allocated_resource((acpi_handle)dev->data, &dev->res); return ACPI_FAILURE(status) ? -ENODEV : 0; } @@ -112,9 +112,9 @@ static int pnpacpi_set_resources(struct pnp_dev * dev, struct pnp_resource_table static int pnpacpi_disable_resources(struct pnp_dev *dev) { acpi_status status; - + /* acpi_unregister_gsi(pnp_irq(dev, 0)); */ - status = acpi_evaluate_object((acpi_handle)dev->data, + status = acpi_evaluate_object((acpi_handle)dev->data, "_DIS", NULL, NULL); return ACPI_FAILURE(status) ? -ENODEV : 0; } @@ -167,7 +167,7 @@ static int __init pnpacpi_add_device(struct acpi_device *device) strncpy(dev->name, acpi_device_bid(device), sizeof(dev->name)); dev->number = num; - + /* set the initial values for the PnP device */ dev_id = kzalloc(sizeof(struct pnp_id), GFP_KERNEL); if (!dev_id) @@ -185,14 +185,14 @@ static int __init pnpacpi_add_device(struct acpi_device *device) } if(dev->capabilities & PNP_CONFIGURABLE) { - status = pnpacpi_parse_resource_option_data(device->handle, + status = pnpacpi_parse_resource_option_data(device->handle, dev); if (ACPI_FAILURE(status) && (status != AE_NOT_FOUND)) { pnp_err("PnPACPI: METHOD_NAME__PRS failure for %s", dev_id->id); goto err1; } } - + /* parse compatible ids */ if (device->flags.compatible_ids) { struct acpi_compatible_id_list *cid_list = device->pnp.cid_list; @@ -236,6 +236,42 @@ static acpi_status __init pnpacpi_add_device_handler(acpi_handle handle, return AE_OK; } +static int __init acpi_pnp_match(struct device *dev, void *_pnp) +{ + struct acpi_device *acpi = to_acpi_device(dev); + struct pnp_dev *pnp = _pnp; + + /* true means it matched */ + return acpi->flags.hardware_id + && !acpi_get_physical_device(acpi->handle) + && compare_pnp_id(pnp->id, acpi->pnp.hardware_id); +} + +static int __init acpi_pnp_find_device(struct device *dev, acpi_handle *handle) +{ + struct device *adev; + struct acpi_device *acpi; + + adev = bus_find_device(&acpi_bus_type, NULL, + to_pnp_dev(dev), + acpi_pnp_match); + if (!adev) + return -ENODEV; + + acpi = to_acpi_device(adev); + *handle = acpi->handle; + put_device(adev); + return 0; +} + +/* complete initialization of a PNPACPI device includes having + * pnpdev->dev.archdata.acpi_handle point to its ACPI sibling. + */ +static struct acpi_bus_type __initdata acpi_pnp_bus = { + .bus = &pnp_bus_type, + .find_device = acpi_pnp_find_device, +}; + int pnpacpi_disabled __initdata; static int __init pnpacpi_init(void) { @@ -245,8 +281,10 @@ static int __init pnpacpi_init(void) } pnp_info("PnP ACPI init"); pnp_register_protocol(&pnpacpi_protocol); + register_acpi_bus_type(&acpi_pnp_bus); acpi_get_devices(NULL, pnpacpi_add_device_handler, NULL, NULL); pnp_info("PnP ACPI: found %d devices", num); + unregister_acpi_bus_type(&acpi_pnp_bus); return 0; } subsys_initcall(pnpacpi_init); |