[people/arne_f/kernel.git] / drivers / media / video / gspca / gspca.h

#ifndef GSPCAV2_H
#define GSPCAV2_H

#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/usb.h>
#include <linux/videodev2.h>
#include <media/v4l2-common.h>
#include <linux/mutex.h>
#include <linux/slab.h>

/* compilation option */
#define GSPCA_DEBUG 1

#ifdef GSPCA_DEBUG
/* GSPCA our debug messages */
extern int gspca_debug;
#define PDEBUG(level, fmt, args...) \
	do {\
		if (gspca_debug & (level)) \
			printk(KERN_INFO MODULE_NAME ": " fmt "\n", ## args); \
	} while (0)
#define D_ERR  0x01
#define D_PROBE 0x02
#define D_CONF 0x04
#define D_STREAM 0x08
#define D_FRAM 0x10
#define D_PACK 0x20
#define D_USBI 0x40
#define D_USBO 0x80
#define D_V4L2 0x0100
#else
#define PDEBUG(level, fmt, args...)
#endif
#undef err
#define err(fmt, args...) \
	printk(KERN_ERR MODULE_NAME ": " fmt "\n", ## args)
#undef info
#define info(fmt, args...) \
	printk(KERN_INFO MODULE_NAME ": " fmt "\n", ## args)
#undef warn
#define warn(fmt, args...) \
	printk(KERN_WARNING MODULE_NAME ": " fmt "\n", ## args)

#define GSPCA_MAX_FRAMES 16	/* maximum number of video frame buffers */
/* image transfers */
#define MAX_NURBS 4		/* max number of URBs */


/* used to list framerates supported by a camera mode (resolution) */
struct framerates {
	const u8 *rates;
	int nrates;
};

/* device information - set at probe time */
struct cam {
	const struct v4l2_pix_format *cam_mode;	/* size nmodes */
	const struct framerates *mode_framerates; /* must have size nmode,
						   * just like cam_mode */
	u32 bulk_size;		/* buffer size when image transfer by bulk */
	u32 input_flags;	/* value for ENUM_INPUT status flags */
	u8 nmodes;		/* size of cam_mode */
	u8 no_urb_create;	/* don't create transfer URBs */
	u8 bulk_nurbs;		/* number of URBs in bulk mode
				 * - cannot be > MAX_NURBS
				 * - when 0 and bulk_size != 0 means
				 *   1 URB and submit done by subdriver */
	u8 bulk;		/* image transfer by 0:isoc / 1:bulk */
	u8 npkt;		/* number of packets in an ISOC message
				 * 0 is the default value: 32 packets */
	u8 reverse_alts;	/* Alt settings are in high to low order */
};

struct gspca_dev;
struct gspca_frame;

/* subdriver operations */
typedef int (*cam_op) (struct gspca_dev *);
typedef void (*cam_v_op) (struct gspca_dev *);
typedef int (*cam_cf_op) (struct gspca_dev *, const struct usb_device_id *);
typedef int (*cam_jpg_op) (struct gspca_dev *,
				struct v4l2_jpegcompression *);
typedef int (*cam_reg_op) (struct gspca_dev *,
				struct v4l2_dbg_register *);
typedef int (*cam_ident_op) (struct gspca_dev *,
				struct v4l2_dbg_chip_ident *);
typedef int (*cam_streamparm_op) (struct gspca_dev *,
				  struct v4l2_streamparm *);
typedef int (*cam_qmnu_op) (struct gspca_dev *,
			struct v4l2_querymenu *);
typedef void (*cam_pkt_op) (struct gspca_dev *gspca_dev,
				u8 *data,
				int len);
typedef int (*cam_int_pkt_op) (struct gspca_dev *gspca_dev,
				u8 *data,
				int len);

struct ctrl {
	struct v4l2_queryctrl qctrl;
	int (*set)(struct gspca_dev *, __s32);
	int (*get)(struct gspca_dev *, __s32 *);
};

/* subdriver description */
struct sd_desc {
/* information */
	const char *name;	/* sub-driver name */
/* controls */
	const struct ctrl *ctrls;
	int nctrls;
/* mandatory operations */
	cam_cf_op config;	/* called on probe */
	cam_op init;		/* called on probe and resume */
	cam_op start;		/* called on stream on after URBs creation */
	cam_pkt_op pkt_scan;
/* optional operations */
	cam_op isoc_init;	/* called on stream on before getting the EP */
	cam_op isoc_nego;	/* called when URB submit failed with NOSPC */
	cam_v_op stopN;		/* called on stream off - main alt */
	cam_v_op stop0;		/* called on stream off & disconnect - alt 0 */
	cam_v_op dq_callback;	/* called when a frame has been dequeued */
	cam_jpg_op get_jcomp;
	cam_jpg_op set_jcomp;
	cam_qmnu_op querymenu;
	cam_streamparm_op get_streamparm;
	cam_streamparm_op set_streamparm;
#ifdef CONFIG_VIDEO_ADV_DEBUG
	cam_reg_op set_register;
	cam_reg_op get_register;
#endif
	cam_ident_op get_chip_ident;
#ifdef CONFIG_INPUT
	cam_int_pkt_op int_pkt_scan;
	/* other_input makes the gspca core create gspca_dev->input even when
	   int_pkt_scan is NULL, for cams with non interrupt driven buttons */
	u8 other_input;
#endif
};

/* packet types when moving from iso buf to frame buf */
enum gspca_packet_type {
	DISCARD_PACKET,
	FIRST_PACKET,
	INTER_PACKET,
	LAST_PACKET
};

struct gspca_frame {
	__u8 *data;			/* frame buffer */
	__u8 *data_end;			/* end of frame while filling */
	int vma_use_count;
	struct v4l2_buffer v4l2_buf;
};

struct gspca_dev {
	struct video_device vdev;	/* !! must be the first item */
	struct module *module;		/* subdriver handling the device */
	struct usb_device *dev;
	struct file *capt_file;		/* file doing video capture */
#ifdef CONFIG_INPUT
	struct input_dev *input_dev;
	char phys[64];			/* physical device path */
#endif

	struct cam cam;				/* device information */
	const struct sd_desc *sd_desc;		/* subdriver description */
	unsigned ctrl_dis;		/* disabled controls (bit map) */
	unsigned ctrl_inac;		/* inactive controls (bit map) */

#define USB_BUF_SZ 64
	__u8 *usb_buf;				/* buffer for USB exchanges */
	struct urb *urb[MAX_NURBS];
#ifdef CONFIG_INPUT
	struct urb *int_urb;
#endif

	__u8 *frbuf;				/* buffer for nframes */
	struct gspca_frame frame[GSPCA_MAX_FRAMES];
	struct gspca_frame *cur_frame;		/* frame beeing filled */
	__u32 frsz;				/* frame size */
	char nframes;				/* number of frames */
	char fr_i;				/* frame being filled */
	char fr_q;				/* next frame to queue */
	char fr_o;				/* next frame to dequeue */
	signed char fr_queue[GSPCA_MAX_FRAMES];	/* frame queue */
	__u8 last_packet_type;
	__s8 empty_packet;		/* if (-1) don't check empty packets */
	__u8 streaming;

	__u8 curr_mode;			/* current camera mode */
	__u32 pixfmt;			/* current mode parameters */
	__u16 width;
	__u16 height;
	__u32 sequence;			/* frame sequence number */

	wait_queue_head_t wq;		/* wait queue */
	struct mutex usb_lock;		/* usb exchange protection */
	struct mutex read_lock;		/* read protection */
	struct mutex queue_lock;	/* ISOC queue protection */
	int usb_err;			/* USB error - protected by usb_lock */
#ifdef CONFIG_PM
	char frozen;			/* suspend - resume */
#endif
	char users;			/* number of opens */
	char present;			/* device connected */
	char nbufread;			/* number of buffers for read() */
	char memory;			/* memory type (V4L2_MEMORY_xxx) */
	__u8 iface;			/* USB interface number */
	__u8 alt;			/* USB alternate setting */
	__u8 nbalt;			/* number of USB alternate settings */
	u16 pkt_size;			/* ISOC packet size */
};

int gspca_dev_probe(struct usb_interface *intf,
		const struct usb_device_id *id,
		const struct sd_desc *sd_desc,
		int dev_size,
		struct module *module);
void gspca_disconnect(struct usb_interface *intf);
void gspca_frame_add(struct gspca_dev *gspca_dev,
			enum gspca_packet_type packet_type,
			const u8 *data,
			int len);
struct gspca_frame *gspca_get_i_frame(struct gspca_dev *gspca_dev);
#ifdef CONFIG_PM
int gspca_suspend(struct usb_interface *intf, pm_message_t message);
int gspca_resume(struct usb_interface *intf);
#endif
int gspca_auto_gain_n_exposure(struct gspca_dev *gspca_dev, int avg_lum,
	int desired_avg_lum, int deadzone, int gain_knee, int exposure_knee);
#endif /* GSPCAV2_H */
Commit	Line	Data
63eb9546 JFM	1	#ifndef GSPCAV2_H
	2	#define GSPCAV2_H
	3
	4	#include <linux/module.h>
63eb9546 JFM	5	#include <linux/kernel.h>
	6	#include <linux/usb.h>
	7	#include <linux/videodev2.h>
	8	#include <media/v4l2-common.h>
	9	#include <linux/mutex.h>
5a0e3ad6	10	#include <linux/slab.h>
63eb9546	11
335b3f88 JFM	12	/* compilation option */
	13	#define GSPCA_DEBUG 1
	14
	15	#ifdef GSPCA_DEBUG
63eb9546 JFM	16	/* GSPCA our debug messages */
	17	extern int gspca_debug;
	18	#define PDEBUG(level, fmt, args...) \
	19	do {\
	20	if (gspca_debug & (level)) \
	21	printk(KERN_INFO MODULE_NAME ": " fmt "\n", ## args); \
	22	} while (0)
	23	#define D_ERR 0x01
	24	#define D_PROBE 0x02
	25	#define D_CONF 0x04
	26	#define D_STREAM 0x08
	27	#define D_FRAM 0x10
	28	#define D_PACK 0x20
	29	#define D_USBI 0x40
	30	#define D_USBO 0x80
d43fa32f	31	#define D_V4L2 0x0100
63eb9546 JFM	32	#else
	33	#define PDEBUG(level, fmt, args...)
	34	#endif
	35	#undef err
	36	#define err(fmt, args...) \
11fb06bd	37	printk(KERN_ERR MODULE_NAME ": " fmt "\n", ## args)
63eb9546 JFM	38	#undef info
63eb9546 JFM	39	#define info(fmt, args...) \
11fb06bd	40	printk(KERN_INFO MODULE_NAME ": " fmt "\n", ## args)
63eb9546 JFM	41	#undef warn
63eb9546 JFM	42	#define warn(fmt, args...) \
11fb06bd	43	printk(KERN_WARNING MODULE_NAME ": " fmt "\n", ## args)
63eb9546 JFM	44
63eb9546 JFM	45	#define GSPCA_MAX_FRAMES 16 /* maximum number of video frame buffers */
0be01004 JFM	46	/* image transfers */
0be01004 JFM	47	#define MAX_NURBS 4 /* max number of URBs */
63eb9546	48
28ffe77f AO	49
	50	/* used to list framerates supported by a camera mode (resolution) */
	51	struct framerates {
29b87f04	52	const u8 *rates;
28ffe77f AO	53	int nrates;
	54	};
	55
63eb9546	56	/* device information - set at probe time */
63eb9546	57	struct cam {
cc611b8a	58	const struct v4l2_pix_format cam_mode; / size nmodes */
28ffe77f AO	59	const struct framerates mode_framerates; / must have size nmode,
28ffe77f AO	60	* just like cam_mode */
47aaca96 JFM	61	u32 bulk_size; /* buffer size when image transfer by bulk */
	62	u32 input_flags; /* value for ENUM_INPUT status flags */
	63	u8 nmodes; /* size of cam_mode */
	64	u8 no_urb_create; /* don't create transfer URBs */
	65	u8 bulk_nurbs; /* number of URBs in bulk mode
dff369aa AO	66	* - cannot be > MAX_NURBS
	67	* - when 0 and bulk_size != 0 means
	68	* 1 URB and submit done by subdriver */
6929dc6b	69	u8 bulk; /* image transfer by 0:isoc / 1:bulk */
49cb6b04 JFM	70	u8 npkt; /* number of packets in an ISOC message
49cb6b04 JFM	71	* 0 is the default value: 32 packets */
47aaca96	72	u8 reverse_alts; /* Alt settings are in high to low order */
63eb9546 JFM	73	};
	74
	75	struct gspca_dev;
	76	struct gspca_frame;
	77
	78	/* subdriver operations */
	79	typedef int (cam_op) (struct gspca_dev );
	80	typedef void (cam_v_op) (struct gspca_dev );
	81	typedef int (cam_cf_op) (struct gspca_dev , const struct usb_device_id *);
	82	typedef int (cam_jpg_op) (struct gspca_dev ,
	83	struct v4l2_jpegcompression *);
af1d9afa BJ	84	typedef int (cam_reg_op) (struct gspca_dev ,
	85	struct v4l2_dbg_register *);
	86	typedef int (cam_ident_op) (struct gspca_dev ,
	87	struct v4l2_dbg_chip_ident *);
627a5ef7 JP	88	typedef int (cam_streamparm_op) (struct gspca_dev ,
627a5ef7 JP	89	struct v4l2_streamparm *);
63eb9546 JFM	90	typedef int (cam_qmnu_op) (struct gspca_dev ,
	91	struct v4l2_querymenu *);
	92	typedef void (cam_pkt_op) (struct gspca_dev gspca_dev,
76dd272b	93	u8 *data,
63eb9546	94	int len);
0274d42e MN	95	typedef int (cam_int_pkt_op) (struct gspca_dev gspca_dev,
	96	u8 *data,
	97	int len);
63eb9546 JFM	98
	99	struct ctrl {
	100	struct v4l2_queryctrl qctrl;
	101	int (set)(struct gspca_dev , __s32);
	102	int (get)(struct gspca_dev , __s32 *);
	103	};
	104
	105	/* subdriver description */
	106	struct sd_desc {
	107	/* information */
a5ae2062	108	const char name; / sub-driver name */
63eb9546	109	/* controls */
a5ae2062	110	const struct ctrl *ctrls;
63eb9546	111	int nctrls;
012d6b02	112	/* mandatory operations */
e2997a72	113	cam_cf_op config; /* called on probe */
012d6b02	114	cam_op init; /* called on probe and resume */
1f53b0b0	115	cam_op start; /* called on stream on after URBs creation */
63eb9546	116	cam_pkt_op pkt_scan;
c2446b3e	117	/* optional operations */
1f53b0b0 JFM	118	cam_op isoc_init; /* called on stream on before getting the EP */
1f53b0b0 JFM	119	cam_op isoc_nego; /* called when URB submit failed with NOSPC */
012d6b02	120	cam_v_op stopN; /* called on stream off - main alt */
98522a7b	121	cam_v_op stop0; /* called on stream off & disconnect - alt 0 */
c2446b3e	122	cam_v_op dq_callback; /* called when a frame has been dequeued */
63eb9546 JFM	123	cam_jpg_op get_jcomp;
	124	cam_jpg_op set_jcomp;
	125	cam_qmnu_op querymenu;
627a5ef7 JP	126	cam_streamparm_op get_streamparm;
627a5ef7 JP	127	cam_streamparm_op set_streamparm;
af1d9afa BJ	128	#ifdef CONFIG_VIDEO_ADV_DEBUG
	129	cam_reg_op set_register;
	130	cam_reg_op get_register;
	131	#endif
	132	cam_ident_op get_chip_ident;
0274d42e MN	133	#ifdef CONFIG_INPUT
0274d42e MN	134	cam_int_pkt_op int_pkt_scan;
ac82f59f HG	135	/* other_input makes the gspca core create gspca_dev->input even when
	136	int_pkt_scan is NULL, for cams with non interrupt driven buttons */
	137	u8 other_input;
0274d42e	138	#endif
63eb9546 JFM	139	};
63eb9546 JFM	140
63eb9546	141	/* packet types when moving from iso buf to frame buf */
e293e599 EA	142	enum gspca_packet_type {
	143	DISCARD_PACKET,
	144	FIRST_PACKET,
	145	INTER_PACKET,
	146	LAST_PACKET
	147	};
63eb9546 JFM	148
63eb9546 JFM	149	struct gspca_frame {
6a7eba24 JFM	150	__u8 data; / frame buffer */
6a7eba24 JFM	151	__u8 data_end; / end of frame while filling */
63eb9546 JFM	152	int vma_use_count;
	153	struct v4l2_buffer v4l2_buf;
	154	};
	155
	156	struct gspca_dev {
a12ca6a6	157	struct video_device vdev; /* !! must be the first item */
5c4fa002	158	struct module module; / subdriver handling the device */
63eb9546	159	struct usb_device *dev;
4aa0d037	160	struct file capt_file; / file doing video capture */
0274d42e MN	161	#ifdef CONFIG_INPUT
	162	struct input_dev *input_dev;
	163	char phys[64]; /* physical device path */
	164	#endif
63eb9546 JFM	165
	166	struct cam cam; /* device information */
	167	const struct sd_desc sd_desc; / subdriver description */
f50ba1be	168	unsigned ctrl_dis; /* disabled controls (bit map) */
4af85668	169	unsigned ctrl_inac; /* inactive controls (bit map) */
63eb9546	170
8295d99e JFM	171	#define USB_BUF_SZ 64
8295d99e JFM	172	__u8 usb_buf; / buffer for USB exchanges */
d43fa32f	173	struct urb *urb[MAX_NURBS];
0274d42e MN	174	#ifdef CONFIG_INPUT
	175	struct urb *int_urb;
	176	#endif
63eb9546 JFM	177
	178	__u8 frbuf; / buffer for nframes */
	179	struct gspca_frame frame[GSPCA_MAX_FRAMES];
3ec342f2	180	struct gspca_frame cur_frame; / frame beeing filled */
6a7eba24	181	__u32 frsz; /* frame size */
63eb9546 JFM	182	char nframes; /* number of frames */
	183	char fr_i; /* frame being filled */
	184	char fr_q; /* next frame to queue */
	185	char fr_o; /* next frame to dequeue */
	186	signed char fr_queue[GSPCA_MAX_FRAMES]; /* frame queue */
ff374747 JFM	187	__u8 last_packet_type;
	188	__s8 empty_packet; /* if (-1) don't check empty packets */
	189	__u8 streaming;
63eb9546	190
6a7eba24	191	__u8 curr_mode; /* current camera mode */
63eb9546	192	__u32 pixfmt; /* current mode parameters */
6a7eba24 JFM	193	__u16 width;
6a7eba24 JFM	194	__u16 height;
ff374747	195	__u32 sequence; /* frame sequence number */
63eb9546	196
63eb9546 JFM	197	wait_queue_head_t wq; /* wait queue */
	198	struct mutex usb_lock; /* usb exchange protection */
	199	struct mutex read_lock; /* read protection */
	200	struct mutex queue_lock; /* ISOC queue protection */
8c4ebae4	201	int usb_err; /* USB error - protected by usb_lock */
6a709749 JFM	202	#ifdef CONFIG_PM
	203	char frozen; /* suspend - resume */
	204	#endif
d43fa32f	205	char users; /* number of opens */
63eb9546 JFM	206	char present; /* device connected */
63eb9546 JFM	207	char nbufread; /* number of buffers for read() */
d43fa32f	208	char memory; /* memory type (V4L2_MEMORY_xxx) */
ff374747 JFM	209	__u8 iface; /* USB interface number */
ff374747 JFM	210	__u8 alt; /* USB alternate setting */
d43fa32f	211	__u8 nbalt; /* number of USB alternate settings */
1f53b0b0	212	u16 pkt_size; /* ISOC packet size */
63eb9546 JFM	213	};
	214
	215	int gspca_dev_probe(struct usb_interface *intf,
	216	const struct usb_device_id *id,
	217	const struct sd_desc *sd_desc,
d43fa32f JFM	218	int dev_size,
d43fa32f JFM	219	struct module *module);
63eb9546	220	void gspca_disconnect(struct usb_interface *intf);
76dd272b JFM	221	void gspca_frame_add(struct gspca_dev *gspca_dev,
	222	enum gspca_packet_type packet_type,
	223	const u8 *data,
	224	int len);
1b60e1ad	225	struct gspca_frame gspca_get_i_frame(struct gspca_dev gspca_dev);
6a709749 JFM	226	#ifdef CONFIG_PM
	227	int gspca_suspend(struct usb_interface *intf, pm_message_t message);
	228	int gspca_resume(struct usb_interface *intf);
	229	#endif
dcef3237 HG	230	int gspca_auto_gain_n_exposure(struct gspca_dev *gspca_dev, int avg_lum,
dcef3237 HG	231	int desired_avg_lum, int deadzone, int gain_knee, int exposure_knee);
63eb9546	232	#endif /* GSPCAV2_H */