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 */
15 /* GSPCA our debug messages */
16 extern int gspca_debug
;
17 #define PDEBUG(level, fmt, args...) \
19 if (gspca_debug & (level)) \
20 printk(KERN_INFO MODULE_NAME ": " fmt "\n", ## args); \
32 #define PDEBUG(level, fmt, args...)
35 #define err(fmt, args...) \
36 printk(KERN_ERR MODULE_NAME ": " fmt "\n", ## args)
38 #define info(fmt, args...) \
39 printk(KERN_INFO MODULE_NAME ": " fmt "\n", ## args)
41 #define warn(fmt, args...) \
42 printk(KERN_WARNING MODULE_NAME ": " fmt "\n", ## args)
44 #define GSPCA_MAX_FRAMES 16 /* maximum number of video frame buffers */
46 #define MAX_NURBS 4 /* max number of URBs */
49 /* used to list framerates supported by a camera mode (resolution) */
55 /* device information - set at probe time */
57 const struct v4l2_pix_format
*cam_mode
; /* size nmodes */
58 const struct framerates
*mode_framerates
; /* must have size nmode,
59 * just like cam_mode */
60 u32 bulk_size
; /* buffer size when image transfer by bulk */
61 u32 input_flags
; /* value for ENUM_INPUT status flags */
62 u8 nmodes
; /* size of cam_mode */
63 u8 no_urb_create
; /* don't create transfer URBs */
64 u8 bulk_nurbs
; /* number of URBs in bulk mode
65 * - cannot be > MAX_NURBS
66 * - when 0 and bulk_size != 0 means
67 * 1 URB and submit done by subdriver */
68 u8 bulk
; /* image transfer by 0:isoc / 1:bulk */
69 u8 npkt
; /* number of packets in an ISOC message
70 * 0 is the default value: 32 packets */
71 u8 reverse_alts
; /* Alt settings are in high to low order */
77 /* subdriver operations */
78 typedef int (*cam_op
) (struct gspca_dev
*);
79 typedef void (*cam_v_op
) (struct gspca_dev
*);
80 typedef int (*cam_cf_op
) (struct gspca_dev
*, const struct usb_device_id
*);
81 typedef int (*cam_jpg_op
) (struct gspca_dev
*,
82 struct v4l2_jpegcompression
*);
83 typedef int (*cam_reg_op
) (struct gspca_dev
*,
84 struct v4l2_dbg_register
*);
85 typedef int (*cam_ident_op
) (struct gspca_dev
*,
86 struct v4l2_dbg_chip_ident
*);
87 typedef int (*cam_streamparm_op
) (struct gspca_dev
*,
88 struct v4l2_streamparm
*);
89 typedef int (*cam_qmnu_op
) (struct gspca_dev
*,
90 struct v4l2_querymenu
*);
91 typedef void (*cam_pkt_op
) (struct gspca_dev
*gspca_dev
,
94 typedef int (*cam_int_pkt_op
) (struct gspca_dev
*gspca_dev
,
99 struct v4l2_queryctrl qctrl
;
100 int (*set
)(struct gspca_dev
*, __s32
);
101 int (*get
)(struct gspca_dev
*, __s32
*);
104 /* subdriver description */
107 const char *name
; /* sub-driver name */
109 const struct ctrl
*ctrls
;
111 /* mandatory operations */
112 cam_cf_op config
; /* called on probe */
113 cam_op init
; /* called on probe and resume */
114 cam_op start
; /* called on stream on after URBs creation */
116 /* optional operations */
117 cam_op isoc_init
; /* called on stream on before getting the EP */
118 cam_op isoc_nego
; /* called when URB submit failed with NOSPC */
119 cam_v_op stopN
; /* called on stream off - main alt */
120 cam_v_op stop0
; /* called on stream off & disconnect - alt 0 */
121 cam_v_op dq_callback
; /* called when a frame has been dequeued */
122 cam_jpg_op get_jcomp
;
123 cam_jpg_op set_jcomp
;
124 cam_qmnu_op querymenu
;
125 cam_streamparm_op get_streamparm
;
126 cam_streamparm_op set_streamparm
;
127 #ifdef CONFIG_VIDEO_ADV_DEBUG
128 cam_reg_op set_register
;
129 cam_reg_op get_register
;
131 cam_ident_op get_chip_ident
;
132 #if defined(CONFIG_INPUT) || defined(CONFIG_INPUT_MODULE)
133 cam_int_pkt_op int_pkt_scan
;
134 /* other_input makes the gspca core create gspca_dev->input even when
135 int_pkt_scan is NULL, for cams with non interrupt driven buttons */
140 /* packet types when moving from iso buf to frame buf */
141 enum gspca_packet_type
{
149 __u8
*data
; /* frame buffer */
151 struct v4l2_buffer v4l2_buf
;
155 struct video_device vdev
; /* !! must be the first item */
156 struct module
*module
; /* subdriver handling the device */
157 struct usb_device
*dev
;
158 struct file
*capt_file
; /* file doing video capture */
159 #if defined(CONFIG_INPUT) || defined(CONFIG_INPUT_MODULE)
160 struct input_dev
*input_dev
;
161 char phys
[64]; /* physical device path */
164 struct cam cam
; /* device information */
165 const struct sd_desc
*sd_desc
; /* subdriver description */
166 unsigned ctrl_dis
; /* disabled controls (bit map) */
167 unsigned ctrl_inac
; /* inactive controls (bit map) */
169 #define USB_BUF_SZ 64
170 __u8
*usb_buf
; /* buffer for USB exchanges */
171 struct urb
*urb
[MAX_NURBS
];
172 #if defined(CONFIG_INPUT) || defined(CONFIG_INPUT_MODULE)
176 __u8
*frbuf
; /* buffer for nframes */
177 struct gspca_frame frame
[GSPCA_MAX_FRAMES
];
178 u8
*image
; /* image beeing filled */
179 __u32 frsz
; /* frame size */
180 u32 image_len
; /* current length of image */
181 atomic_t fr_q
; /* next frame to queue */
182 atomic_t fr_i
; /* frame being filled */
183 signed char fr_queue
[GSPCA_MAX_FRAMES
]; /* frame queue */
184 char nframes
; /* number of frames */
185 u8 fr_o
; /* next frame to dequeue */
186 __u8 last_packet_type
;
187 __s8 empty_packet
; /* if (-1) don't check empty packets */
190 __u8 curr_mode
; /* current camera mode */
191 __u32 pixfmt
; /* current mode parameters */
194 __u32 sequence
; /* frame sequence number */
196 wait_queue_head_t wq
; /* wait queue */
197 struct mutex usb_lock
; /* usb exchange protection */
198 struct mutex read_lock
; /* read protection */
199 struct mutex queue_lock
; /* ISOC queue protection */
200 int usb_err
; /* USB error - protected by usb_lock */
201 u16 pkt_size
; /* ISOC packet size */
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 u8 audio
; /* presence of audio device */
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 int gspca_dev_probe2(struct usb_interface
*intf
,
221 const struct usb_device_id
*id
,
222 const struct sd_desc
*sd_desc
,
224 struct module
*module
);
225 void gspca_disconnect(struct usb_interface
*intf
);
226 void gspca_frame_add(struct gspca_dev
*gspca_dev
,
227 enum gspca_packet_type packet_type
,
231 int gspca_suspend(struct usb_interface
*intf
, pm_message_t message
);
232 int gspca_resume(struct usb_interface
*intf
);
234 int gspca_auto_gain_n_exposure(struct gspca_dev
*gspca_dev
, int avg_lum
,
235 int desired_avg_lum
, int deadzone
, int gain_knee
, int exposure_knee
);
236 #endif /* GSPCAV2_H */