drivers/macintosh/windfarm.h

Source file repositories/reference/linux-study-clean/drivers/macintosh/windfarm.h

File Facts

System
Linux kernel
Corpus path
drivers/macintosh/windfarm.h
Extension
.h
Size
4166 bytes
Lines
157
Domain
Driver Families
Bucket
drivers/macintosh
Inferred role
Driver Families: implementation source
Status
source implementation candidate

Why This File Exists

Repeatable hardware-adapter layer. Deep compatibility for every driver is out of scope; this atlas records patterns, probe lifecycles, bus glue, IRQ/DMA usage, and links back to core abstractions.

Dependency Surface

Detected Declarations

Annotated Snippet

struct wf_control_ops {
	int			(*set_value)(struct wf_control *ct, s32 val);
	int			(*get_value)(struct wf_control *ct, s32 *val);
	s32			(*get_min)(struct wf_control *ct);
	s32			(*get_max)(struct wf_control *ct);
	void			(*release)(struct wf_control *ct);
	struct module		*owner;
};

struct wf_control {
	struct list_head		link;
	const struct wf_control_ops	*ops;
	const char			*name;
	int				type;
	struct kref			ref;
	struct device_attribute		attr;
	void				*priv;
};

#define WF_CONTROL_TYPE_GENERIC		0
#define WF_CONTROL_RPM_FAN		1
#define WF_CONTROL_PWM_FAN		2


/* Note about lifetime rules: wf_register_control() will initialize
 * the kref and wf_unregister_control will decrement it, thus the
 * object creating/disposing a given control shouldn't assume it
 * still exists after wf_unregister_control has been called.
 */
extern int wf_register_control(struct wf_control *ct);
extern void wf_unregister_control(struct wf_control *ct);
extern int wf_get_control(struct wf_control *ct);
extern void wf_put_control(struct wf_control *ct);

static inline int wf_control_set_max(struct wf_control *ct)
{
	s32 vmax = ct->ops->get_max(ct);
	return ct->ops->set_value(ct, vmax);
}

static inline int wf_control_set_min(struct wf_control *ct)
{
	s32 vmin = ct->ops->get_min(ct);
	return ct->ops->set_value(ct, vmin);
}

static inline int wf_control_set(struct wf_control *ct, s32 val)
{
	return ct->ops->set_value(ct, val);
}

static inline int wf_control_get(struct wf_control *ct, s32 *val)
{
	return ct->ops->get_value(ct, val);
}

static inline s32 wf_control_get_min(struct wf_control *ct)
{
	return ct->ops->get_min(ct);
}

static inline s32 wf_control_get_max(struct wf_control *ct)
{
	return ct->ops->get_max(ct);
}

/*
 * Sensor objects
 */

struct wf_sensor;

struct wf_sensor_ops {
	int			(*get_value)(struct wf_sensor *sr, s32 *val);
	void			(*release)(struct wf_sensor *sr);
	struct module		*owner;
};

struct wf_sensor {
	struct list_head		link;
	const struct wf_sensor_ops	*ops;
	const char			*name;
	struct kref			ref;
	struct device_attribute		attr;
	void				*priv;
};

/* Same lifetime rules as controls */
extern int wf_register_sensor(struct wf_sensor *sr);
extern void wf_unregister_sensor(struct wf_sensor *sr);

Annotation

Implementation Notes