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>
11 /* compilation option */
12 /*#define GSPCA_DEBUG 1*/
15 /* GSPCA our debug messages */
16 extern int gspca_debug;
17 #define PDEBUG(level, fmt, ...) \
19 if (gspca_debug & (level)) \
20 pr_info(fmt, ##__VA_ARGS__); \
33 #define PDEBUG(level, fmt, ...)
36 #define GSPCA_MAX_FRAMES 16 /* maximum number of video frame buffers */
38 #define MAX_NURBS 4 /* max number of URBs */
41 /* used to list framerates supported by a camera mode (resolution) */
47 /* control definition */
49 s16 val; /* current value */
50 s16 def; /* default value */
51 s16 min, max; /* minimum and maximum values */
54 /* device information - set at probe time */
56 const struct v4l2_pix_format *cam_mode; /* size nmodes */
57 const struct framerates *mode_framerates; /* must have size nmodes,
58 * just like cam_mode */
59 struct gspca_ctrl *ctrls; /* control table - size nctrls */
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 needs_full_bandwidth;/* Set this flag to notify the bandwidth calc.
73 * code that the cam fills all image buffers to
74 * the max, even when using compression. */
80 /* subdriver operations */
81 typedef int (*cam_op) (struct gspca_dev *);
82 typedef void (*cam_v_op) (struct gspca_dev *);
83 typedef int (*cam_cf_op) (struct gspca_dev *, const struct usb_device_id *);
84 typedef int (*cam_jpg_op) (struct gspca_dev *,
85 struct v4l2_jpegcompression *);
86 typedef int (*cam_reg_op) (struct gspca_dev *,
87 struct v4l2_dbg_register *);
88 typedef int (*cam_ident_op) (struct gspca_dev *,
89 struct v4l2_dbg_chip_ident *);
90 typedef void (*cam_streamparm_op) (struct gspca_dev *,
91 struct v4l2_streamparm *);
92 typedef int (*cam_qmnu_op) (struct gspca_dev *,
93 struct v4l2_querymenu *);
94 typedef void (*cam_pkt_op) (struct gspca_dev *gspca_dev,
97 typedef int (*cam_int_pkt_op) (struct gspca_dev *gspca_dev,
102 struct v4l2_queryctrl qctrl;
103 int (*set)(struct gspca_dev *, __s32);
104 int (*get)(struct gspca_dev *, __s32 *);
105 cam_v_op set_control;
108 /* subdriver description */
111 const char *name; /* sub-driver name */
113 const struct ctrl *ctrls; /* static control definition */
115 /* mandatory operations */
116 cam_cf_op config; /* called on probe */
117 cam_op init; /* called on probe and resume */
118 cam_op start; /* called on stream on after URBs creation */
120 /* optional operations */
121 cam_op isoc_init; /* called on stream on before getting the EP */
122 cam_op isoc_nego; /* called when URB submit failed with NOSPC */
123 cam_v_op stopN; /* called on stream off - main alt */
124 cam_v_op stop0; /* called on stream off & disconnect - alt 0 */
125 cam_v_op dq_callback; /* called when a frame has been dequeued */
126 cam_jpg_op get_jcomp;
127 cam_jpg_op set_jcomp;
128 cam_qmnu_op querymenu;
129 cam_streamparm_op get_streamparm;
130 cam_streamparm_op set_streamparm;
131 #ifdef CONFIG_VIDEO_ADV_DEBUG
132 cam_reg_op set_register;
133 cam_reg_op get_register;
135 cam_ident_op get_chip_ident;
136 #if defined(CONFIG_INPUT) || defined(CONFIG_INPUT_MODULE)
137 cam_int_pkt_op int_pkt_scan;
138 /* other_input makes the gspca core create gspca_dev->input even when
139 int_pkt_scan is NULL, for cams with non interrupt driven buttons */
144 /* packet types when moving from iso buf to frame buf */
145 enum gspca_packet_type {
153 __u8 *data; /* frame buffer */
155 struct v4l2_buffer v4l2_buf;
159 struct video_device vdev; /* !! must be the first item */
160 struct module *module; /* subdriver handling the device */
161 struct usb_device *dev;
162 struct file *capt_file; /* file doing video capture */
163 #if defined(CONFIG_INPUT) || defined(CONFIG_INPUT_MODULE)
164 struct input_dev *input_dev;
165 char phys[64]; /* physical device path */
168 struct cam cam; /* device information */
169 const struct sd_desc *sd_desc; /* subdriver description */
170 unsigned ctrl_dis; /* disabled controls (bit map) */
171 unsigned ctrl_inac; /* inactive controls (bit map) */
173 #define USB_BUF_SZ 64
174 __u8 *usb_buf; /* buffer for USB exchanges */
175 struct urb *urb[MAX_NURBS];
176 #if defined(CONFIG_INPUT) || defined(CONFIG_INPUT_MODULE)
180 __u8 *frbuf; /* buffer for nframes */
181 struct gspca_frame frame[GSPCA_MAX_FRAMES];
182 u8 *image; /* image beeing filled */
183 __u32 frsz; /* frame size */
184 u32 image_len; /* current length of image */
185 atomic_t fr_q; /* next frame to queue */
186 atomic_t fr_i; /* frame being filled */
187 signed char fr_queue[GSPCA_MAX_FRAMES]; /* frame queue */
188 char nframes; /* number of frames */
189 u8 fr_o; /* next frame to dequeue */
190 __u8 last_packet_type;
191 __s8 empty_packet; /* if (-1) don't check empty packets */
194 __u8 curr_mode; /* current camera mode */
195 __u32 pixfmt; /* current mode parameters */
198 __u32 sequence; /* frame sequence number */
200 wait_queue_head_t wq; /* wait queue */
201 struct mutex usb_lock; /* usb exchange protection */
202 struct mutex queue_lock; /* ISOC queue protection */
203 int usb_err; /* USB error - protected by usb_lock */
204 u16 pkt_size; /* ISOC packet size */
206 char frozen; /* suspend - resume */
208 char present; /* device connected */
209 char nbufread; /* number of buffers for read() */
210 char memory; /* memory type (V4L2_MEMORY_xxx) */
211 __u8 iface; /* USB interface number */
212 __u8 alt; /* USB alternate setting */
213 u8 audio; /* presence of audio device */
216 int gspca_dev_probe(struct usb_interface *intf,
217 const struct usb_device_id *id,
218 const struct sd_desc *sd_desc,
220 struct module *module);
221 int gspca_dev_probe2(struct usb_interface *intf,
222 const struct usb_device_id *id,
223 const struct sd_desc *sd_desc,
225 struct module *module);
226 void gspca_disconnect(struct usb_interface *intf);
227 void gspca_frame_add(struct gspca_dev *gspca_dev,
228 enum gspca_packet_type packet_type,
232 int gspca_suspend(struct usb_interface *intf, pm_message_t message);
233 int gspca_resume(struct usb_interface *intf);
235 int gspca_auto_gain_n_exposure(struct gspca_dev *gspca_dev, int avg_lum,
236 int desired_avg_lum, int deadzone, int gain_knee, int exposure_knee);
237 #endif /* GSPCAV2_H */