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dev: implement driver objects to organise and identify devices

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This commit is contained in:
max 🍓
2023-06-02 19:35:07 +01:00
parent 577abf3bba
commit b7b0691b8f
17 changed files with 349 additions and 74 deletions
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32
dev/input.c
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@@ -21,14 +21,6 @@ struct input_device *input_device_create(void)
return NULL;
}
unsigned long flags;
spin_lock_irqsave(&input_device_ids_lock, &flags);
unsigned int id = bitmap_lowest_clear(input_device_ids, INPUT_DEVICE_MAX);
bitmap_set(input_device_ids, id);
spin_unlock_irqrestore(&input_device_ids_lock, flags);
input_dev->i_id = id;
return INPUT_DEVICE(dev);
}
@@ -63,9 +55,27 @@ kern_status_t input_device_read(struct device *dev, void *buf, size_t size, size
return KERN_OK;
}
kern_status_t input_device_generate_name(struct input_device *dev)
static kern_status_t generate_name(struct input_device *dev, char out[DEV_NAME_MAX])
{
struct device *d = input_device_base(dev);
snprintf(d->dev_name, sizeof d->dev_name, "input%u", dev->i_id);
snprintf(out, DEV_NAME_MAX, "input%u", dev->i_id);
return KERN_OK;
}
kern_status_t input_device_register(struct input_device *dev)
{
unsigned long flags;
spin_lock_irqsave(&input_device_ids_lock, &flags);
unsigned int id = bitmap_lowest_clear(input_device_ids, INPUT_DEVICE_MAX);
bitmap_set(input_device_ids, id);
spin_unlock_irqrestore(&input_device_ids_lock, flags);
dev->i_id = id;
char name[DEV_NAME_MAX];
generate_name(dev, name);
char path[OBJECT_PATH_MAX];
snprintf(path, sizeof path, "/dev/input/%s", name);
struct device *base = input_device_base(dev);
return object_namespace_create_link(global_namespace(), path, &base->dev_base);
}