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path: root/drivers/pnp/driver.c
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Diffstat (limited to 'drivers/pnp/driver.c')
-rw-r--r--drivers/pnp/driver.c192
1 files changed, 118 insertions, 74 deletions
diff --git a/drivers/pnp/driver.c b/drivers/pnp/driver.c
index 7cafacdd12b..f748cc8cbb0 100644
--- a/drivers/pnp/driver.c
+++ b/drivers/pnp/driver.c
@@ -2,10 +2,8 @@
* driver.c - device id matching, driver model, etc.
*
* Copyright 2002 Adam Belay <ambx1@neo.rr.com>
- *
*/
-#include <linux/config.h>
#include <linux/string.h>
#include <linux/list.h>
#include <linux/module.h>
@@ -17,12 +15,11 @@
static int compare_func(const char *ida, const char *idb)
{
int i;
+
/* we only need to compare the last 4 chars */
- for (i=3; i<7; i++)
- {
+ for (i = 3; i < 7; i++) {
if (ida[i] != 'X' &&
- idb[i] != 'X' &&
- toupper(ida[i]) != toupper(idb[i]))
+ idb[i] != 'X' && toupper(ida[i]) != toupper(idb[i]))
return 0;
}
return 1;
@@ -32,20 +29,22 @@ int compare_pnp_id(struct pnp_id *pos, const char *id)
{
if (!pos || !id || (strlen(id) != 7))
return 0;
- if (memcmp(id,"ANYDEVS",7)==0)
+ if (memcmp(id, "ANYDEVS", 7) == 0)
return 1;
- while (pos){
- if (memcmp(pos->id,id,3)==0)
- if (compare_func(pos->id,id)==1)
+ while (pos) {
+ if (memcmp(pos->id, id, 3) == 0)
+ if (compare_func(pos->id, id) == 1)
return 1;
pos = pos->next;
}
return 0;
}
-static const struct pnp_device_id * match_device(struct pnp_driver *drv, struct pnp_dev *dev)
+static const struct pnp_device_id *match_device(struct pnp_driver *drv,
+ struct pnp_dev *dev)
{
const struct pnp_device_id *drv_id = drv->id_table;
+
if (!drv_id)
return NULL;
@@ -60,7 +59,7 @@ static const struct pnp_device_id * match_device(struct pnp_driver *drv, struct
int pnp_device_attach(struct pnp_dev *pnp_dev)
{
spin_lock(&pnp_lock);
- if(pnp_dev->status != PNP_READY){
+ if (pnp_dev->status != PNP_READY) {
spin_unlock(&pnp_lock);
return -EBUSY;
}
@@ -87,8 +86,6 @@ static int pnp_device_probe(struct device *dev)
pnp_dev = to_pnp_dev(dev);
pnp_drv = to_pnp_driver(dev->driver);
- pnp_dbg("match found with the PnP device '%s' and the driver '%s'", dev->bus_id,pnp_drv->name);
-
error = pnp_device_attach(pnp_dev);
if (error < 0)
return error;
@@ -100,7 +97,7 @@ static int pnp_device_probe(struct device *dev)
return error;
}
} else if ((pnp_drv->flags & PNP_DRIVER_RES_DISABLE)
- == PNP_DRIVER_RES_DISABLE) {
+ == PNP_DRIVER_RES_DISABLE) {
error = pnp_disable_dev(pnp_dev);
if (error < 0)
return error;
@@ -111,11 +108,12 @@ static int pnp_device_probe(struct device *dev)
if (dev_id != NULL)
error = pnp_drv->probe(pnp_dev, dev_id);
}
- if (error >= 0){
+ if (error >= 0) {
pnp_dev->driver = pnp_drv;
error = 0;
} else
goto fail;
+
return error;
fail:
@@ -125,8 +123,8 @@ fail:
static int pnp_device_remove(struct device *dev)
{
- struct pnp_dev * pnp_dev = to_pnp_dev(dev);
- struct pnp_driver * drv = pnp_dev->driver;
+ struct pnp_dev *pnp_dev = to_pnp_dev(dev);
+ struct pnp_driver *drv = pnp_dev->driver;
if (drv) {
if (drv->remove)
@@ -137,132 +135,178 @@ static int pnp_device_remove(struct device *dev)
return 0;
}
+static void pnp_device_shutdown(struct device *dev)
+{
+ struct pnp_dev *pnp_dev = to_pnp_dev(dev);
+ struct pnp_driver *drv = pnp_dev->driver;
+
+ if (drv && drv->shutdown)
+ drv->shutdown(pnp_dev);
+}
+
static int pnp_bus_match(struct device *dev, struct device_driver *drv)
{
- struct pnp_dev * pnp_dev = to_pnp_dev(dev);
- struct pnp_driver * pnp_drv = to_pnp_driver(drv);
+ struct pnp_dev *pnp_dev = to_pnp_dev(dev);
+ struct pnp_driver *pnp_drv = to_pnp_driver(drv);
+
if (match_device(pnp_drv, pnp_dev) == NULL)
return 0;
return 1;
}
-static int pnp_bus_suspend(struct device *dev, pm_message_t state)
+static int __pnp_bus_suspend(struct device *dev, pm_message_t state)
{
- struct pnp_dev * pnp_dev = to_pnp_dev(dev);
- struct pnp_driver * pnp_drv = pnp_dev->driver;
+ struct pnp_dev *pnp_dev = to_pnp_dev(dev);
+ struct pnp_driver *pnp_drv = pnp_dev->driver;
int error;
if (!pnp_drv)
return 0;
+ if (pnp_drv->driver.pm && pnp_drv->driver.pm->suspend) {
+ error = pnp_drv->driver.pm->suspend(dev);
+ suspend_report_result(pnp_drv->driver.pm->suspend, error);
+ if (error)
+ return error;
+ }
+
if (pnp_drv->suspend) {
error = pnp_drv->suspend(pnp_dev, state);
if (error)
return error;
}
- if (!(pnp_drv->flags & PNP_DRIVER_RES_DO_NOT_CHANGE) &&
- pnp_can_disable(pnp_dev)) {
- error = pnp_stop_dev(pnp_dev);
- if (error)
- return error;
+ if (pnp_can_disable(pnp_dev)) {
+ error = pnp_stop_dev(pnp_dev);
+ if (error)
+ return error;
}
+ if (pnp_dev->protocol->suspend)
+ pnp_dev->protocol->suspend(pnp_dev, state);
return 0;
}
+static int pnp_bus_suspend(struct device *dev)
+{
+ return __pnp_bus_suspend(dev, PMSG_SUSPEND);
+}
+
+static int pnp_bus_freeze(struct device *dev)
+{
+ return __pnp_bus_suspend(dev, PMSG_FREEZE);
+}
+
+static int pnp_bus_poweroff(struct device *dev)
+{
+ return __pnp_bus_suspend(dev, PMSG_HIBERNATE);
+}
+
static int pnp_bus_resume(struct device *dev)
{
- struct pnp_dev * pnp_dev = to_pnp_dev(dev);
- struct pnp_driver * pnp_drv = pnp_dev->driver;
+ struct pnp_dev *pnp_dev = to_pnp_dev(dev);
+ struct pnp_driver *pnp_drv = pnp_dev->driver;
int error;
if (!pnp_drv)
return 0;
- if (!(pnp_drv->flags & PNP_DRIVER_RES_DO_NOT_CHANGE)) {
+ if (pnp_dev->protocol->resume) {
+ error = pnp_dev->protocol->resume(pnp_dev);
+ if (error)
+ return error;
+ }
+
+ if (pnp_can_write(pnp_dev)) {
error = pnp_start_dev(pnp_dev);
if (error)
return error;
}
- if (pnp_drv->resume)
- return pnp_drv->resume(pnp_dev);
+ if (pnp_drv->driver.pm && pnp_drv->driver.pm->resume) {
+ error = pnp_drv->driver.pm->resume(dev);
+ if (error)
+ return error;
+ }
+
+ if (pnp_drv->resume) {
+ error = pnp_drv->resume(pnp_dev);
+ if (error)
+ return error;
+ }
return 0;
}
-struct bus_type pnp_bus_type = {
- .name = "pnp",
- .match = pnp_bus_match,
- .probe = pnp_device_probe,
- .remove = pnp_device_remove,
+static const struct dev_pm_ops pnp_bus_dev_pm_ops = {
+ /* Suspend callbacks */
.suspend = pnp_bus_suspend,
.resume = pnp_bus_resume,
+ /* Hibernate callbacks */
+ .freeze = pnp_bus_freeze,
+ .thaw = pnp_bus_resume,
+ .poweroff = pnp_bus_poweroff,
+ .restore = pnp_bus_resume,
};
-
-static int count_devices(struct device * dev, void * c)
-{
- int * count = c;
- (*count)++;
- return 0;
-}
+struct bus_type pnp_bus_type = {
+ .name = "pnp",
+ .match = pnp_bus_match,
+ .probe = pnp_device_probe,
+ .remove = pnp_device_remove,
+ .shutdown = pnp_device_shutdown,
+ .pm = &pnp_bus_dev_pm_ops,
+ .dev_groups = pnp_dev_groups,
+};
int pnp_register_driver(struct pnp_driver *drv)
{
- int count;
-
- pnp_dbg("the driver '%s' has been registered", drv->name);
-
drv->driver.name = drv->name;
drv->driver.bus = &pnp_bus_type;
- count = driver_register(&drv->driver);
-
- /* get the number of initial matches */
- if (count >= 0){
- count = 0;
- driver_for_each_device(&drv->driver, NULL, &count, count_devices);
- }
- return count;
+ return driver_register(&drv->driver);
}
void pnp_unregister_driver(struct pnp_driver *drv)
{
driver_unregister(&drv->driver);
- pnp_dbg("the driver '%s' has been unregistered", drv->name);
}
/**
* pnp_add_id - adds an EISA id to the specified device
- * @id: pointer to a pnp_id structure
* @dev: pointer to the desired device
- *
+ * @id: pointer to an EISA id string
*/
-
-int pnp_add_id(struct pnp_id *id, struct pnp_dev *dev)
+struct pnp_id *pnp_add_id(struct pnp_dev *dev, const char *id)
{
- struct pnp_id *ptr;
- if (!id)
- return -EINVAL;
- if (!dev)
- return -EINVAL;
- id->next = NULL;
+ struct pnp_id *dev_id, *ptr;
+
+ dev_id = kzalloc(sizeof(struct pnp_id), GFP_KERNEL);
+ if (!dev_id)
+ return NULL;
+
+ dev_id->id[0] = id[0];
+ dev_id->id[1] = id[1];
+ dev_id->id[2] = id[2];
+ dev_id->id[3] = tolower(id[3]);
+ dev_id->id[4] = tolower(id[4]);
+ dev_id->id[5] = tolower(id[5]);
+ dev_id->id[6] = tolower(id[6]);
+ dev_id->id[7] = '\0';
+
+ dev_id->next = NULL;
ptr = dev->id;
while (ptr && ptr->next)
ptr = ptr->next;
if (ptr)
- ptr->next = id;
+ ptr->next = dev_id;
else
- dev->id = id;
- return 0;
+ dev->id = dev_id;
+
+ return dev_id;
}
EXPORT_SYMBOL(pnp_register_driver);
EXPORT_SYMBOL(pnp_unregister_driver);
-#if 0
-EXPORT_SYMBOL(pnp_add_id);
-#endif
EXPORT_SYMBOL(pnp_device_attach);
EXPORT_SYMBOL(pnp_device_detach);
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2025-12-06 12:08:20 +0000