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ethercat
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Create class device with device_number information in sysfs.

This commit is contained in:
Florian Pose 2008-06-17 12:49:06 +00:00
parent 1553af9375
commit 25ffc9f638
3 changed files with 16 additions and 3 deletions
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14
master/master.c
View File

@ -76,7 +76,8 @@ int ec_master_init(ec_master_t *master, /**< EtherCAT master */
unsigned int index, /**< master index */
const uint8_t *main_mac, /**< MAC address of main device */
const uint8_t *backup_mac, /**< MAC address of backup device */
dev_t device_number /**< Character device number. */
dev_t device_number, /**< Character device number. */
struct class *class /**< Device class. */
)
{
unsigned int i;
@ -170,9 +171,19 @@ int ec_master_init(ec_master_t *master, /**< EtherCAT master */
// init character device
if (ec_cdev_init(&master->cdev, master, device_number))
goto out_clear_fsm;
master->class_device = class_device_create(class,
MKDEV(MAJOR(device_number), master->index),
NULL, "EtherCAT%u", master->index);
if (IS_ERR(master->class_device)) {
EC_ERR("Failed to create class device!\n");
goto out_clear_cdev;
}
return 0;
out_clear_cdev:
ec_cdev_clear(&master->cdev);
out_clear_fsm:
ec_fsm_master_clear(&master->fsm);
ec_datagram_clear(&master->fsm_datagram);
@ -192,6 +203,7 @@ void ec_master_clear(
ec_master_t *master /**< EtherCAT master */
)
{
class_device_unregister(master->class_device);
ec_cdev_clear(&master->cdev);
#ifdef EC_EOE
ec_master_clear_eoe_handlers(master);

3
master/master.h
View File

@ -84,6 +84,7 @@ struct ec_master {
unsigned int reserved; /**< non-zero, if the master is reserved for RT */
ec_cdev_t cdev; /**< Master character device. */
struct class_device *class_device; /**< Master class device. */
ec_device_t main_device; /**< EtherCAT device */
const uint8_t *main_mac; /**< MAC address of main device */
@ -167,7 +168,7 @@ struct ec_master {
// master creation/deletion
int ec_master_init(ec_master_t *, unsigned int, const uint8_t *,
const uint8_t *, dev_t);
const uint8_t *, dev_t, struct class *);
void ec_master_clear(ec_master_t *);
// mode transitions

2
master/module.c
View File

@ -144,7 +144,7 @@ int __init ec_init_module(void)
for (i = 0; i < master_count; i++) {
if (ec_master_init(&masters[i], i, macs[i][0], macs[i][1],
device_number)) {
device_number, class)) {
ret = -ENOMEM;
goto out_free_masters;
}