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PNPACPI sets pnpdev->dev.archdata

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Teach PNPACPI how to hook up its devices to their ACPI nodes, so that
pnpdev->dev.archdata points to the parallel acpi device node.  Previously
this only worked for PCI, leaving a notable hole.

Export "acpi_bus_type" so this can work.

Remove some extraneous whitespace.

Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Cc: Adam Belay <ambx1@neo.rr.com>
Cc: Bjorn Helgaas <bjorn.helgaas@hp.com>
Cc: Len Brown <lenb@kernel.org>
Cc: Greg KH <greg@kroah.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
David Brownell 2007-05-08 00:28:35 -07:00 committed by Linus Torvalds
parent 98701d1b0f
commit 55955aad7c
3 changed files with 50 additions and 9 deletions
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2
drivers/acpi/scan.c
View File

@ -302,7 +302,7 @@ static void acpi_device_shutdown(struct device *dev)
return ;
}
static struct bus_type acpi_bus_type = {
struct bus_type acpi_bus_type = {
.name = "acpi",
.suspend = acpi_device_suspend,
.resume = acpi_device_resume,

54
drivers/pnp/pnpacpi/core.c
View File

@ -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);

3
include/acpi/acpi_bus.h
View File

@ -303,6 +303,9 @@ struct acpi_device {
#define to_acpi_device(d) container_of(d, struct acpi_device, dev)
#define to_acpi_driver(d) container_of(d, struct acpi_driver, drv)
/* acpi_device.dev.bus == &acpi_bus_type */
extern struct bus_type acpi_bus_type;
/*
* Events
* ------