4 #include <linux/module.h>
5 #include <linux/kernel.h>
7 #include <linux/videodev2.h>
8 #include <media/v4l2-common.h>
9 #include <linux/mutex.h>
10 #include <linux/slab.h>
12 /* compilation option */
16 /* GSPCA our debug messages */
17 extern int gspca_debug
;
18 #define PDEBUG(level, fmt, args...) \
20 if (gspca_debug & (level)) \
21 printk(KERN_INFO MODULE_NAME ": " fmt "\n", ## args); \
33 #define PDEBUG(level, fmt, args...)
36 #define err(fmt, args...) \
37 printk(KERN_ERR MODULE_NAME ": " fmt "\n", ## args)
39 #define info(fmt, args...) \
40 printk(KERN_INFO MODULE_NAME ": " fmt "\n", ## args)
42 #define warn(fmt, args...) \
43 printk(KERN_WARNING MODULE_NAME ": " fmt "\n", ## args)
45 #define GSPCA_MAX_FRAMES 16 /* maximum number of video frame buffers */
47 #define MAX_NURBS 4 /* max number of URBs */
50 /* used to list framerates supported by a camera mode (resolution) */
56 /* device information - set at probe time */
58 const struct v4l2_pix_format
*cam_mode
; /* size nmodes */
59 const struct framerates
*mode_framerates
; /* must have size nmode,
60 * just like cam_mode */
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
66 * - cannot be > MAX_NURBS
67 * - when 0 and bulk_size != 0 means
68 * 1 URB and submit done by subdriver */
69 u8 bulk
; /* image transfer by 0:isoc / 1:bulk */
70 u8 npkt
; /* number of packets in an ISOC message
71 * 0 is the default value: 32 packets */
72 u8 reverse_alts
; /* Alt settings are in high to low order */
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
*);
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
*);
88 typedef int (*cam_streamparm_op
) (struct gspca_dev
*,
89 struct v4l2_streamparm
*);
90 typedef int (*cam_qmnu_op
) (struct gspca_dev
*,
91 struct v4l2_querymenu
*);
92 typedef void (*cam_pkt_op
) (struct gspca_dev
*gspca_dev
,
95 typedef int (*cam_int_pkt_op
) (struct gspca_dev
*gspca_dev
,
100 struct v4l2_queryctrl qctrl
;
101 int (*set
)(struct gspca_dev
*, __s32
);
102 int (*get
)(struct gspca_dev
*, __s32
*);
105 /* subdriver description */
108 const char *name
; /* sub-driver name */
110 const struct ctrl
*ctrls
;
112 /* mandatory operations */
113 cam_cf_op config
; /* called on probe */
114 cam_op init
; /* called on probe and resume */
115 cam_op start
; /* called on stream on after URBs creation */
117 /* optional operations */
118 cam_op isoc_init
; /* called on stream on before getting the EP */
119 cam_op isoc_nego
; /* called when URB submit failed with NOSPC */
120 cam_v_op stopN
; /* called on stream off - main alt */
121 cam_v_op stop0
; /* called on stream off & disconnect - alt 0 */
122 cam_v_op dq_callback
; /* called when a frame has been dequeued */
123 cam_jpg_op get_jcomp
;
124 cam_jpg_op set_jcomp
;
125 cam_qmnu_op querymenu
;
126 cam_streamparm_op get_streamparm
;
127 cam_streamparm_op set_streamparm
;
128 #ifdef CONFIG_VIDEO_ADV_DEBUG
129 cam_reg_op set_register
;
130 cam_reg_op get_register
;
132 cam_ident_op get_chip_ident
;
134 cam_int_pkt_op int_pkt_scan
;
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 */
141 /* packet types when moving from iso buf to frame buf */
142 enum gspca_packet_type
{
150 __u8
*data
; /* frame buffer */
151 __u8
*data_end
; /* end of frame while filling */
153 struct v4l2_buffer v4l2_buf
;
157 struct video_device vdev
; /* !! must be the first item */
158 struct module
*module
; /* subdriver handling the device */
159 struct usb_device
*dev
;
160 struct file
*capt_file
; /* file doing video capture */
162 struct input_dev
*input_dev
;
163 char phys
[64]; /* physical device path */
166 struct cam cam
; /* device information */
167 const struct sd_desc
*sd_desc
; /* subdriver description */
168 unsigned ctrl_dis
; /* disabled controls (bit map) */
169 unsigned ctrl_inac
; /* inactive controls (bit map) */
171 #define USB_BUF_SZ 64
172 __u8
*usb_buf
; /* buffer for USB exchanges */
173 struct urb
*urb
[MAX_NURBS
];
178 __u8
*frbuf
; /* buffer for nframes */
179 struct gspca_frame frame
[GSPCA_MAX_FRAMES
];
180 struct gspca_frame
*cur_frame
; /* frame beeing filled */
181 __u32 frsz
; /* frame size */
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 */
187 __u8 last_packet_type
;
188 __s8 empty_packet
; /* if (-1) don't check empty packets */
191 __u8 curr_mode
; /* current camera mode */
192 __u32 pixfmt
; /* current mode parameters */
195 __u32 sequence
; /* frame sequence number */
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 */
201 int usb_err
; /* USB error - protected by usb_lock */
203 char frozen
; /* suspend - resume */
205 char users
; /* number of opens */
206 char present
; /* device connected */
207 char nbufread
; /* number of buffers for read() */
208 char memory
; /* memory type (V4L2_MEMORY_xxx) */
209 __u8 iface
; /* USB interface number */
210 __u8 alt
; /* USB alternate setting */
211 __u8 nbalt
; /* number of USB alternate settings */
212 u16 pkt_size
; /* ISOC packet size */
215 int gspca_dev_probe(struct usb_interface
*intf
,
216 const struct usb_device_id
*id
,
217 const struct sd_desc
*sd_desc
,
219 struct module
*module
);
220 void gspca_disconnect(struct usb_interface
*intf
);
221 void gspca_frame_add(struct gspca_dev
*gspca_dev
,
222 enum gspca_packet_type packet_type
,
225 struct gspca_frame
*gspca_get_i_frame(struct gspca_dev
*gspca_dev
);
227 int gspca_suspend(struct usb_interface
*intf
, pm_message_t message
);
228 int gspca_resume(struct usb_interface
*intf
);
230 int gspca_auto_gain_n_exposure(struct gspca_dev
*gspca_dev
, int avg_lum
,
231 int desired_avg_lum
, int deadzone
, int gain_knee
, int exposure_knee
);
232 #endif /* GSPCAV2_H */