hid-gfb.h

#ifndef GFB_PANEL_H_INCLUDED
#define GFB_PANEL_H_INCLUDED		1

#define GFB_PANEL_TYPE_160_43_1		0
#define GFB_PANEL_TYPE_320_240_16	1

#include <linux/fb.h>

/* Per device data structure */
struct gfb_data {
	struct hid_device *hdev;
	struct kref kref;

	/* Framebuffer stuff */
	int panel_type; /* enumeration of GFB_PANEL_TYPE_ values */

	struct fb_info *fb_info;

	struct fb_deferred_io fb_defio;
	u8 fb_update_rate;

	u8 *fb_bitmap;		/* device-dependent bitmap */
	u8 *fb_vbitmap;		/* userspace bitmap */
	int fb_vbitmap_busy;	/* soft-lock for vbitmap; uses fb_urb_lock */
	size_t fb_vbitmap_size; /* size of vbitmap */

	struct delayed_work free_framebuffer_work;

	/* USB stuff */
	struct urb *fb_urb;
	spinlock_t fb_urb_lock;

	/* Userspace stuff */
	int fb_count;	   /* open file handle counter */
	bool virtualized;  /* true when physical device not present */
};

ssize_t gfb_fb_node_show(struct device *dev,
			 struct device_attribute *attr,
			 char *buf);

ssize_t gfb_fb_update_rate_show(struct device *dev,
				struct device_attribute *attr,
				char *buf);

ssize_t gfb_fb_update_rate_store(struct device *dev,
				 struct device_attribute *attr,
				 const char *buf, size_t count);

struct gfb_data *gfb_probe(struct hid_device *hdev, const int panel_type);

void gfb_remove(struct gfb_data *data);

#endif