1 #ifndef GSPCAV2_H 2 #define GSPCAV2_H 3 4 #include <linux/module.h> 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> 10 11 /* compilation option */ 12 #define GSPCA_DEBUG 1 13 14 #ifdef GSPCA_DEBUG 15 /* GSPCA our debug messages */ 16 extern int gspca_debug; 17 #define PDEBUG(level, fmt, args...) \ 18 do {\ 19 if (gspca_debug & (level)) \ 20 printk(KERN_INFO MODULE_NAME ": " fmt "\n", ## args); \ 21 } while (0) 22 #define D_ERR 0x01 23 #define D_PROBE 0x02 24 #define D_CONF 0x04 25 #define D_STREAM 0x08 26 #define D_FRAM 0x10 27 #define D_PACK 0x20 28 #define D_USBI 0x40 29 #define D_USBO 0x80 30 #define D_V4L2 0x0100 31 #else 32 #define PDEBUG(level, fmt, args...) 33 #endif 34 #undef err 35 #define err(fmt, args...) \ 36 printk(KERN_ERR MODULE_NAME ": " fmt "\n", ## args) 37 #undef info 38 #define info(fmt, args...) \ 39 printk(KERN_INFO MODULE_NAME ": " fmt "\n", ## args) 40 #undef warn 41 #define warn(fmt, args...) \ 42 printk(KERN_WARNING MODULE_NAME ": " fmt "\n", ## args) 43 44 #define GSPCA_MAX_FRAMES 16 /* maximum number of video frame buffers */ 45 /* image transfers */ 46 #define MAX_NURBS 4 /* max number of URBs */ 47 48 49 /* used to list framerates supported by a camera mode (resolution) */ 50 struct framerates { 51 const u8 *rates; 52 int nrates; 53 }; 54 55 /* control definition */ 56 struct gspca_ctrl { 57 s16 val; /* current value */ 58 s16 def; /* default value */ 59 s16 min, max; /* minimum and maximum values */ 60 }; 61 62 /* device information - set at probe time */ 63 struct cam { 64 const struct v4l2_pix_format *cam_mode; /* size nmodes */ 65 const struct framerates *mode_framerates; /* must have size nmodes, 66 * just like cam_mode */ 67 struct gspca_ctrl *ctrls; /* control table - size nctrls */ 68 /* may be NULL */ 69 u32 bulk_size; /* buffer size when image transfer by bulk */ 70 u32 input_flags; /* value for ENUM_INPUT status flags */ 71 u8 nmodes; /* size of cam_mode */ 72 u8 no_urb_create; /* don't create transfer URBs */ 73 u8 bulk_nurbs; /* number of URBs in bulk mode 74 * - cannot be > MAX_NURBS 75 * - when 0 and bulk_size != 0 means 76 * 1 URB and submit done by subdriver */ 77 u8 bulk; /* image transfer by 0:isoc / 1:bulk */ 78 u8 npkt; /* number of packets in an ISOC message 79 * 0 is the default value: 32 packets */ 80 u8 reverse_alts; /* Alt settings are in high to low order */ 81 }; 82 83 struct gspca_dev; 84 struct gspca_frame; 85 86 /* subdriver operations */ 87 typedef int (*cam_op) (struct gspca_dev *); 88 typedef void (*cam_v_op) (struct gspca_dev *); 89 typedef int (*cam_cf_op) (struct gspca_dev *, const struct usb_device_id *); 90 typedef int (*cam_jpg_op) (struct gspca_dev *, 91 struct v4l2_jpegcompression *); 92 typedef int (*cam_reg_op) (struct gspca_dev *, 93 struct v4l2_dbg_register *); 94 typedef int (*cam_ident_op) (struct gspca_dev *, 95 struct v4l2_dbg_chip_ident *); 96 typedef void (*cam_streamparm_op) (struct gspca_dev *, 97 struct v4l2_streamparm *); 98 typedef int (*cam_qmnu_op) (struct gspca_dev *, 99 struct v4l2_querymenu *); 100 typedef void (*cam_pkt_op) (struct gspca_dev *gspca_dev, 101 u8 *data, 102 int len); 103 typedef int (*cam_int_pkt_op) (struct gspca_dev *gspca_dev, 104 u8 *data, 105 int len); 106 107 struct ctrl { 108 struct v4l2_queryctrl qctrl; 109 int (*set)(struct gspca_dev *, __s32); 110 int (*get)(struct gspca_dev *, __s32 *); 111 cam_v_op set_control; 112 }; 113 114 /* subdriver description */ 115 struct sd_desc { 116 /* information */ 117 const char *name; /* sub-driver name */ 118 /* controls */ 119 const struct ctrl *ctrls; /* static control definition */ 120 int nctrls; 121 /* mandatory operations */ 122 cam_cf_op config; /* called on probe */ 123 cam_op init; /* called on probe and resume */ 124 cam_op start; /* called on stream on after URBs creation */ 125 cam_pkt_op pkt_scan; 126 /* optional operations */ 127 cam_op isoc_init; /* called on stream on before getting the EP */ 128 cam_op isoc_nego; /* called when URB submit failed with NOSPC */ 129 cam_v_op stopN; /* called on stream off - main alt */ 130 cam_v_op stop0; /* called on stream off & disconnect - alt 0 */ 131 cam_v_op dq_callback; /* called when a frame has been dequeued */ 132 cam_jpg_op get_jcomp; 133 cam_jpg_op set_jcomp; 134 cam_qmnu_op querymenu; 135 cam_streamparm_op get_streamparm; 136 cam_streamparm_op set_streamparm; 137 #ifdef CONFIG_VIDEO_ADV_DEBUG 138 cam_reg_op set_register; 139 cam_reg_op get_register; 140 #endif 141 cam_ident_op get_chip_ident; 142 #if defined(CONFIG_INPUT) || defined(CONFIG_INPUT_MODULE) 143 cam_int_pkt_op int_pkt_scan; 144 /* other_input makes the gspca core create gspca_dev->input even when 145 int_pkt_scan is NULL, for cams with non interrupt driven buttons */ 146 u8 other_input; 147 #endif 148 }; 149 150 /* packet types when moving from iso buf to frame buf */ 151 enum gspca_packet_type { 152 DISCARD_PACKET, 153 FIRST_PACKET, 154 INTER_PACKET, 155 LAST_PACKET 156 }; 157 158 struct gspca_frame { 159 __u8 *data; /* frame buffer */ 160 int vma_use_count; 161 struct v4l2_buffer v4l2_buf; 162 }; 163 164 struct gspca_dev { 165 struct video_device vdev; /* !! must be the first item */ 166 struct module *module; /* subdriver handling the device */ 167 struct usb_device *dev; 168 struct file *capt_file; /* file doing video capture */ 169 #if defined(CONFIG_INPUT) || defined(CONFIG_INPUT_MODULE) 170 struct input_dev *input_dev; 171 char phys[64]; /* physical device path */ 172 #endif 173 174 struct cam cam; /* device information */ 175 const struct sd_desc *sd_desc; /* subdriver description */ 176 unsigned ctrl_dis; /* disabled controls (bit map) */ 177 unsigned ctrl_inac; /* inactive controls (bit map) */ 178 179 #define USB_BUF_SZ 64 180 __u8 *usb_buf; /* buffer for USB exchanges */ 181 struct urb *urb[MAX_NURBS]; 182 #if defined(CONFIG_INPUT) || defined(CONFIG_INPUT_MODULE) 183 struct urb *int_urb; 184 #endif 185 186 __u8 *frbuf; /* buffer for nframes */ 187 struct gspca_frame frame[GSPCA_MAX_FRAMES]; 188 u8 *image; /* image beeing filled */ 189 __u32 frsz; /* frame size */ 190 u32 image_len; /* current length of image */ 191 atomic_t fr_q; /* next frame to queue */ 192 atomic_t fr_i; /* frame being filled */ 193 signed char fr_queue[GSPCA_MAX_FRAMES]; /* frame queue */ 194 char nframes; /* number of frames */ 195 u8 fr_o; /* next frame to dequeue */ 196 __u8 last_packet_type; 197 __s8 empty_packet; /* if (-1) don't check empty packets */ 198 __u8 streaming; 199 200 __u8 curr_mode; /* current camera mode */ 201 __u32 pixfmt; /* current mode parameters */ 202 __u16 width; 203 __u16 height; 204 __u32 sequence; /* frame sequence number */ 205 206 wait_queue_head_t wq; /* wait queue */ 207 struct mutex usb_lock; /* usb exchange protection */ 208 struct mutex queue_lock; /* ISOC queue protection */ 209 int usb_err; /* USB error - protected by usb_lock */ 210 u16 pkt_size; /* ISOC packet size */ 211 #ifdef CONFIG_PM 212 char frozen; /* suspend - resume */ 213 #endif 214 char present; /* device connected */ 215 char nbufread; /* number of buffers for read() */ 216 char memory; /* memory type (V4L2_MEMORY_xxx) */ 217 __u8 iface; /* USB interface number */ 218 __u8 alt; /* USB alternate setting */ 219 __u8 nbalt; /* number of USB alternate settings */ 220 u8 audio; /* presence of audio device */ 221 }; 222 223 int gspca_dev_probe(struct usb_interface *intf, 224 const struct usb_device_id *id, 225 const struct sd_desc *sd_desc, 226 int dev_size, 227 struct module *module); 228 int gspca_dev_probe2(struct usb_interface *intf, 229 const struct usb_device_id *id, 230 const struct sd_desc *sd_desc, 231 int dev_size, 232 struct module *module); 233 void gspca_disconnect(struct usb_interface *intf); 234 void gspca_frame_add(struct gspca_dev *gspca_dev, 235 enum gspca_packet_type packet_type, 236 const u8 *data, 237 int len); 238 #ifdef CONFIG_PM 239 int gspca_suspend(struct usb_interface *intf, pm_message_t message); 240 int gspca_resume(struct usb_interface *intf); 241 #endif 242 int gspca_auto_gain_n_exposure(struct gspca_dev *gspca_dev, int avg_lum, 243 int desired_avg_lum, int deadzone, int gain_knee, int exposure_knee); 244 #endif /* GSPCAV2_H */ 245