69 lines
1.9 KiB
C
69 lines
1.9 KiB
C
#ifndef _SWITCH_H_
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#define _SWITCH_H_
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#include <linux/module.h>
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#include <linux/kernel.h>
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#include <linux/sysfs.h>
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#include <linux/slab.h>
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#include <linux/device.h>
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#include <linux/workqueue.h>
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#include <linux/kobject.h>
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#include <linux/delay.h>
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#define DIR_NAME_MAX_LEN (64)
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#define SYSFS_DEV_ERROR "NA"
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enum LOG_LEVEL{
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INFO = 0x1,
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ERR = 0x2,
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DBG = 0x4,
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ALL = 0xf
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};
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extern int g_switch_loglevel;
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#define check_pfun(p) do { \
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if (p == NULL) { \
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if (g_switch_loglevel & ERR) { \
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printk( KERN_ERR "%s, %s is NULL.\n", __FUNCTION__, #p); \
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} \
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return -ENOSYS; \
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} \
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} while(0)
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#define check_p(p) check_pfun(p)
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#define to_switch_obj(x) container_of(x, struct switch_obj, kobj)
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#define to_switch_attr(x) container_of(x, struct switch_attribute, attr)
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#define to_switch_device_attr(x) container_of(x, struct switch_device_attribute, switch_attr)
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#define SWITCH_ATTR(_name, _mode, _show, _store, _type) \
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{ .switch_attr = __ATTR(_name, _mode, _show, _store), \
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.type = _type }
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#define SWITCH_DEVICE_ATTR(_name, _mode, _show, _store, _type) \
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struct switch_device_attribute switch_dev_attr_##_name \
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= SWITCH_ATTR(_name, _mode, _show, _store, _type)
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struct switch_obj {
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struct kobject kobj;
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unsigned int index;
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};
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/* a custom attribute that works just for a struct switch_obj. */
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struct switch_attribute {
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struct attribute attr;
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ssize_t (*show)(struct switch_obj *foo, struct switch_attribute *attr, char *buf);
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ssize_t (*store)(struct switch_obj *foo, struct switch_attribute *attr, const char *buf, size_t count);
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};
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struct switch_device_attribute {
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struct switch_attribute switch_attr;
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int type;
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};
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struct switch_obj *switch_kobject_create(const char *name, struct kobject *parent);
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void switch_kobject_delete(struct switch_obj **obj);
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#endif /* _SWITCH_H_ */
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