diff options
Diffstat (limited to 'drivers/media/video/usbvideo/ultracam.c')
-rw-r--r-- | drivers/media/video/usbvideo/ultracam.c | 679 |
1 files changed, 679 insertions, 0 deletions
diff --git a/drivers/media/video/usbvideo/ultracam.c b/drivers/media/video/usbvideo/ultracam.c new file mode 100644 index 0000000..75ff755 --- /dev/null +++ b/drivers/media/video/usbvideo/ultracam.c @@ -0,0 +1,679 @@ +/* + * USB NB Camera driver + * + * HISTORY: + * 25-Dec-2002 Dmitri Removed lighting, sharpness parameters, methods. + */ + +#include <linux/kernel.h> +#include <linux/sched.h> +#include <linux/module.h> +#include <linux/init.h> + +#include "usbvideo.h" + +#define ULTRACAM_VENDOR_ID 0x0461 +#define ULTRACAM_PRODUCT_ID 0x0813 + +#define MAX_CAMERAS 4 /* How many devices we allow to connect */ + +/* + * This structure lives in uvd_t->user field. + */ +typedef struct { + int initialized; /* Had we already sent init sequence? */ + int camera_model; /* What type of IBM camera we got? */ + int has_hdr; +} ultracam_t; +#define ULTRACAM_T(uvd) ((ultracam_t *)((uvd)->user_data)) + +static struct usbvideo *cams = NULL; + +static int debug = 0; + +static int flags = 0; /* FLAGS_DISPLAY_HINTS | FLAGS_OVERLAY_STATS; */ + +static const int min_canvasWidth = 8; +static const int min_canvasHeight = 4; + +#define FRAMERATE_MIN 0 +#define FRAMERATE_MAX 6 +static int framerate = -1; + +/* + * Here we define several initialization variables. They may + * be used to automatically set color, hue, brightness and + * contrast to desired values. This is particularly useful in + * case of webcams (which have no controls and no on-screen + * output) and also when a client V4L software is used that + * does not have some of those controls. In any case it's + * good to have startup values as options. + * + * These values are all in [0..255] range. This simplifies + * operation. Note that actual values of V4L variables may + * be scaled up (as much as << 8). User can see that only + * on overlay output, however, or through a V4L client. + */ +static int init_brightness = 128; +static int init_contrast = 192; +static int init_color = 128; +static int init_hue = 128; +static int hue_correction = 128; + +module_param(debug, int, S_IRUGO | S_IWUSR); +MODULE_PARM_DESC(debug, "Debug level: 0-9 (default=0)"); +module_param(flags, int, 0); +MODULE_PARM_DESC(flags, + "Bitfield: 0=VIDIOCSYNC, " + "1=B/W, " + "2=show hints, " + "3=show stats, " + "4=test pattern, " + "5=separate frames, " + "6=clean frames"); +module_param(framerate, int, 0); +MODULE_PARM_DESC(framerate, "Framerate setting: 0=slowest, 6=fastest (default=2)"); + +module_param(init_brightness, int, 0); +MODULE_PARM_DESC(init_brightness, "Brightness preconfiguration: 0-255 (default=128)"); +module_param(init_contrast, int, 0); +MODULE_PARM_DESC(init_contrast, "Contrast preconfiguration: 0-255 (default=192)"); +module_param(init_color, int, 0); +MODULE_PARM_DESC(init_color, "Color preconfiguration: 0-255 (default=128)"); +module_param(init_hue, int, 0); +MODULE_PARM_DESC(init_hue, "Hue preconfiguration: 0-255 (default=128)"); +module_param(hue_correction, int, 0); +MODULE_PARM_DESC(hue_correction, "YUV colorspace regulation: 0-255 (default=128)"); + +/* + * ultracam_ProcessIsocData() + * + * Generic routine to parse the ring queue data. It employs either + * ultracam_find_header() or ultracam_parse_lines() to do most + * of work. + * + * 02-Nov-2000 First (mostly dummy) version. + * 06-Nov-2000 Rewrote to dump all data into frame. + */ +static void ultracam_ProcessIsocData(struct uvd *uvd, struct usbvideo_frame *frame) +{ + int n; + + assert(uvd != NULL); + assert(frame != NULL); + + /* Try to move data from queue into frame buffer */ + n = RingQueue_GetLength(&uvd->dp); + if (n > 0) { + int m; + /* See how much spare we have left */ + m = uvd->max_frame_size - frame->seqRead_Length; + if (n > m) + n = m; + /* Now move that much data into frame buffer */ + RingQueue_Dequeue( + &uvd->dp, + frame->data + frame->seqRead_Length, + m); + frame->seqRead_Length += m; + } + /* See if we filled the frame */ + if (frame->seqRead_Length >= uvd->max_frame_size) { + frame->frameState = FrameState_Done; + uvd->curframe = -1; + uvd->stats.frame_num++; + } +} + +/* + * ultracam_veio() + * + * History: + * 1/27/00 Added check for dev == NULL; this happens if camera is unplugged. + */ +static int ultracam_veio( + struct uvd *uvd, + unsigned char req, + unsigned short value, + unsigned short index, + int is_out) +{ + static const char proc[] = "ultracam_veio"; + unsigned char cp[8] /* = { 0xde, 0xad, 0xbe, 0xef, 0xde, 0xad, 0xbe, 0xef } */; + int i; + + if (!CAMERA_IS_OPERATIONAL(uvd)) + return 0; + + if (!is_out) { + i = usb_control_msg( + uvd->dev, + usb_rcvctrlpipe(uvd->dev, 0), + req, + USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE, + value, + index, + cp, + sizeof(cp), + 1000); +#if 1 + info("USB => %02x%02x%02x%02x%02x%02x%02x%02x " + "(req=$%02x val=$%04x ind=$%04x)", + cp[0],cp[1],cp[2],cp[3],cp[4],cp[5],cp[6],cp[7], + req, value, index); +#endif + } else { + i = usb_control_msg( + uvd->dev, + usb_sndctrlpipe(uvd->dev, 0), + req, + USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE, + value, + index, + NULL, + 0, + 1000); + } + if (i < 0) { + err("%s: ERROR=%d. Camera stopped; Reconnect or reload driver.", + proc, i); + uvd->last_error = i; + } + return i; +} + +/* + * ultracam_calculate_fps() + */ +static int ultracam_calculate_fps(struct uvd *uvd) +{ + return 3 + framerate*4 + framerate/2; +} + +/* + * ultracam_adjust_contrast() + */ +static void ultracam_adjust_contrast(struct uvd *uvd) +{ +} + +/* + * ultracam_set_brightness() + * + * This procedure changes brightness of the picture. + */ +static void ultracam_set_brightness(struct uvd *uvd) +{ +} + +static void ultracam_set_hue(struct uvd *uvd) +{ +} + +/* + * ultracam_adjust_picture() + * + * This procedure gets called from V4L interface to update picture settings. + * Here we change brightness and contrast. + */ +static void ultracam_adjust_picture(struct uvd *uvd) +{ + ultracam_adjust_contrast(uvd); + ultracam_set_brightness(uvd); + ultracam_set_hue(uvd); +} + +/* + * ultracam_video_stop() + * + * This code tells camera to stop streaming. The interface remains + * configured and bandwidth - claimed. + */ +static void ultracam_video_stop(struct uvd *uvd) +{ +} + +/* + * ultracam_reinit_iso() + * + * This procedure sends couple of commands to the camera and then + * resets the video pipe. This sequence was observed to reinit the + * camera or, at least, to initiate ISO data stream. + */ +static void ultracam_reinit_iso(struct uvd *uvd, int do_stop) +{ +} + +static void ultracam_video_start(struct uvd *uvd) +{ + ultracam_reinit_iso(uvd, 0); +} + +static int ultracam_resetPipe(struct uvd *uvd) +{ + usb_clear_halt(uvd->dev, uvd->video_endp); + return 0; +} + +static int ultracam_alternateSetting(struct uvd *uvd, int setting) +{ + static const char proc[] = "ultracam_alternateSetting"; + int i; + i = usb_set_interface(uvd->dev, uvd->iface, setting); + if (i < 0) { + err("%s: usb_set_interface error", proc); + uvd->last_error = i; + return -EBUSY; + } + return 0; +} + +/* + * Return negative code on failure, 0 on success. + */ +static int ultracam_setup_on_open(struct uvd *uvd) +{ + int setup_ok = 0; /* Success by default */ + /* Send init sequence only once, it's large! */ + if (!ULTRACAM_T(uvd)->initialized) { + ultracam_alternateSetting(uvd, 0x04); + ultracam_alternateSetting(uvd, 0x00); + ultracam_veio(uvd, 0x02, 0x0004, 0x000b, 1); + ultracam_veio(uvd, 0x02, 0x0001, 0x0005, 1); + ultracam_veio(uvd, 0x02, 0x8000, 0x0000, 1); + ultracam_veio(uvd, 0x00, 0x0000, 0x0000, 1); + ultracam_veio(uvd, 0x00, 0x00b0, 0x0001, 1); + ultracam_veio(uvd, 0x00, 0x0000, 0x0002, 1); + ultracam_veio(uvd, 0x00, 0x000c, 0x0003, 1); + ultracam_veio(uvd, 0x00, 0x000b, 0x0004, 1); + ultracam_veio(uvd, 0x00, 0x0000, 0x0005, 1); + ultracam_veio(uvd, 0x00, 0x0000, 0x0006, 1); + ultracam_veio(uvd, 0x00, 0x0079, 0x0007, 1); + ultracam_veio(uvd, 0x00, 0x003b, 0x0008, 1); + ultracam_veio(uvd, 0x00, 0x0002, 0x000f, 1); + ultracam_veio(uvd, 0x00, 0x0001, 0x0010, 1); + ultracam_veio(uvd, 0x00, 0x0000, 0x0011, 1); + ultracam_veio(uvd, 0x00, 0x0000, 0x00bf, 1); + ultracam_veio(uvd, 0x00, 0x0001, 0x00c0, 1); + ultracam_veio(uvd, 0x00, 0x0010, 0x00cb, 1); + ultracam_veio(uvd, 0x01, 0x00a4, 0x0001, 1); + ultracam_veio(uvd, 0x01, 0x0010, 0x0002, 1); + ultracam_veio(uvd, 0x01, 0x0066, 0x0007, 1); + ultracam_veio(uvd, 0x01, 0x000b, 0x0008, 1); + ultracam_veio(uvd, 0x01, 0x0034, 0x0009, 1); + ultracam_veio(uvd, 0x01, 0x0000, 0x000a, 1); + ultracam_veio(uvd, 0x01, 0x002e, 0x000b, 1); + ultracam_veio(uvd, 0x01, 0x00d6, 0x000c, 1); + ultracam_veio(uvd, 0x01, 0x00fc, 0x000d, 1); + ultracam_veio(uvd, 0x01, 0x00f1, 0x000e, 1); + ultracam_veio(uvd, 0x01, 0x00da, 0x000f, 1); + ultracam_veio(uvd, 0x01, 0x0036, 0x0010, 1); + ultracam_veio(uvd, 0x01, 0x000b, 0x0011, 1); + ultracam_veio(uvd, 0x01, 0x0001, 0x0012, 1); + ultracam_veio(uvd, 0x01, 0x0000, 0x0013, 1); + ultracam_veio(uvd, 0x01, 0x0000, 0x0014, 1); + ultracam_veio(uvd, 0x01, 0x0087, 0x0051, 1); + ultracam_veio(uvd, 0x01, 0x0040, 0x0052, 1); + ultracam_veio(uvd, 0x01, 0x0058, 0x0053, 1); + ultracam_veio(uvd, 0x01, 0x0040, 0x0054, 1); + ultracam_veio(uvd, 0x01, 0x0000, 0x0040, 1); + ultracam_veio(uvd, 0x01, 0x0010, 0x0041, 1); + ultracam_veio(uvd, 0x01, 0x0020, 0x0042, 1); + ultracam_veio(uvd, 0x01, 0x0030, 0x0043, 1); + ultracam_veio(uvd, 0x01, 0x0040, 0x0044, 1); + ultracam_veio(uvd, 0x01, 0x0050, 0x0045, 1); + ultracam_veio(uvd, 0x01, 0x0060, 0x0046, 1); + ultracam_veio(uvd, 0x01, 0x0070, 0x0047, 1); + ultracam_veio(uvd, 0x01, 0x0080, 0x0048, 1); + ultracam_veio(uvd, 0x01, 0x0090, 0x0049, 1); + ultracam_veio(uvd, 0x01, 0x00a0, 0x004a, 1); + ultracam_veio(uvd, 0x01, 0x00b0, 0x004b, 1); + ultracam_veio(uvd, 0x01, 0x00c0, 0x004c, 1); + ultracam_veio(uvd, 0x01, 0x00d0, 0x004d, 1); + ultracam_veio(uvd, 0x01, 0x00e0, 0x004e, 1); + ultracam_veio(uvd, 0x01, 0x00f0, 0x004f, 1); + ultracam_veio(uvd, 0x01, 0x00ff, 0x0050, 1); + ultracam_veio(uvd, 0x01, 0x0000, 0x0056, 1); + ultracam_veio(uvd, 0x00, 0x0080, 0x00c1, 1); + ultracam_veio(uvd, 0x00, 0x0000, 0x00c2, 1); + ultracam_veio(uvd, 0x00, 0x0000, 0x00ca, 1); + ultracam_veio(uvd, 0x00, 0x0000, 0x00c9, 1); + ultracam_veio(uvd, 0x00, 0x0000, 0x00c9, 1); + ultracam_veio(uvd, 0x00, 0x0000, 0x00c9, 1); + ultracam_veio(uvd, 0x00, 0x0000, 0x00c9, 1); + ultracam_veio(uvd, 0x00, 0x0000, 0x00c9, 1); + ultracam_veio(uvd, 0x00, 0x0000, 0x00c9, 1); + ultracam_veio(uvd, 0x00, 0x0000, 0x00c9, 1); + ultracam_veio(uvd, 0x00, 0x0000, 0x00c9, 1); + ultracam_veio(uvd, 0x00, 0x0000, 0x00c9, 1); + ultracam_veio(uvd, 0x00, 0x0000, 0x00c9, 1); + ultracam_veio(uvd, 0x00, 0x0000, 0x00c9, 1); + ultracam_veio(uvd, 0x00, 0x0000, 0x00c9, 1); + ultracam_veio(uvd, 0x00, 0x0000, 0x00c9, 1); + ultracam_veio(uvd, 0x00, 0x0000, 0x00c9, 1); + ultracam_veio(uvd, 0x00, 0x0000, 0x00c9, 1); + ultracam_veio(uvd, 0x00, 0x0000, 0x00c9, 1); + ultracam_veio(uvd, 0x00, 0x0000, 0x00c9, 1); + ultracam_veio(uvd, 0x00, 0x0000, 0x00c9, 1); + ultracam_veio(uvd, 0x00, 0x0080, 0x00c1, 1); + ultracam_veio(uvd, 0x00, 0x0004, 0x00c2, 1); + ultracam_veio(uvd, 0x00, 0x0000, 0x00ca, 1); + ultracam_veio(uvd, 0x00, 0x0000, 0x00c9, 1); + ultracam_veio(uvd, 0x00, 0x0000, 0x00c9, 1); + ultracam_veio(uvd, 0x00, 0x0000, 0x00c9, 1); + ultracam_veio(uvd, 0x00, 0x0000, 0x00c9, 1); + ultracam_veio(uvd, 0x00, 0x0000, 0x00c9, 1); + ultracam_veio(uvd, 0x00, 0x0000, 0x00c9, 1); + ultracam_veio(uvd, 0x00, 0x0000, 0x00c9, 1); + ultracam_veio(uvd, 0x00, 0x0000, 0x00c9, 1); + ultracam_veio(uvd, 0x00, 0x0000, 0x00c9, 1); + ultracam_veio(uvd, 0x00, 0x0000, 0x00c9, 1); + ultracam_veio(uvd, 0x00, 0x0000, 0x00c9, 1); + ultracam_veio(uvd, 0x00, 0x0000, 0x00c9, 1); + ultracam_veio(uvd, 0x00, 0x0000, 0x00c9, 1); + ultracam_veio(uvd, 0x00, 0x0000, 0x00c9, 1); + ultracam_veio(uvd, 0x00, 0x0000, 0x00c9, 1); + ultracam_veio(uvd, 0x00, 0x0000, 0x00c9, 1); + ultracam_veio(uvd, 0x00, 0x0000, 0x00c9, 1); + ultracam_veio(uvd, 0x00, 0x0000, 0x00c9, 1); + ultracam_veio(uvd, 0x00, 0x0002, 0x00c1, 1); + ultracam_veio(uvd, 0x00, 0x0020, 0x00c2, 1); + ultracam_veio(uvd, 0x00, 0x0000, 0x00ca, 1); + ultracam_veio(uvd, 0x00, 0x0000, 0x00c3, 1); + ultracam_veio(uvd, 0x00, 0x0000, 0x00c4, 1); + ultracam_veio(uvd, 0x00, 0x0000, 0x00c5, 1); + ultracam_veio(uvd, 0x00, 0x0000, 0x00c6, 1); + ultracam_veio(uvd, 0x00, 0x0000, 0x00c7, 1); + ultracam_veio(uvd, 0x00, 0x0000, 0x00c8, 1); + ultracam_veio(uvd, 0x00, 0x0000, 0x00c9, 1); + ultracam_veio(uvd, 0x00, 0x0000, 0x00c3, 1); + ultracam_veio(uvd, 0x00, 0x0000, 0x00c4, 1); + ultracam_veio(uvd, 0x00, 0x0000, 0x00c5, 1); + ultracam_veio(uvd, 0x00, 0x0000, 0x00c6, 1); + ultracam_veio(uvd, 0x00, 0x0000, 0x00c7, 1); + ultracam_veio(uvd, 0x00, 0x0000, 0x00c8, 1); + ultracam_veio(uvd, 0x00, 0x0000, 0x00c9, 1); + ultracam_veio(uvd, 0x00, 0x0040, 0x00c1, 1); + ultracam_veio(uvd, 0x00, 0x0017, 0x00c2, 1); + ultracam_veio(uvd, 0x00, 0x0000, 0x00ca, 1); + ultracam_veio(uvd, 0x00, 0x0000, 0x00c3, 1); + ultracam_veio(uvd, 0x00, 0x0000, 0x00c4, 1); + ultracam_veio(uvd, 0x00, 0x0000, 0x00c5, 1); + ultracam_veio(uvd, 0x00, 0x0000, 0x00c6, 1); + ultracam_veio(uvd, 0x00, 0x0000, 0x00c7, 1); + ultracam_veio(uvd, 0x00, 0x0000, 0x00c8, 1); + ultracam_veio(uvd, 0x00, 0x0000, 0x00c9, 1); + ultracam_veio(uvd, 0x00, 0x0000, 0x00c3, 1); + ultracam_veio(uvd, 0x00, 0x0000, 0x00c4, 1); + ultracam_veio(uvd, 0x00, 0x0000, 0x00c5, 1); + ultracam_veio(uvd, 0x00, 0x0000, 0x00c6, 1); + ultracam_veio(uvd, 0x00, 0x0000, 0x00c7, 1); + ultracam_veio(uvd, 0x00, 0x0000, 0x00c8, 1); + ultracam_veio(uvd, 0x00, 0x0000, 0x00c9, 1); + ultracam_veio(uvd, 0x00, 0x00c0, 0x00c1, 1); + ultracam_veio(uvd, 0x00, 0x0000, 0x00c2, 1); + ultracam_veio(uvd, 0x00, 0x0000, 0x00ca, 1); + ultracam_veio(uvd, 0x02, 0xc040, 0x0001, 1); + ultracam_veio(uvd, 0x01, 0x0000, 0x0008, 0); + ultracam_veio(uvd, 0x01, 0x0000, 0x0009, 0); + ultracam_veio(uvd, 0x01, 0x0000, 0x000a, 0); + ultracam_veio(uvd, 0x01, 0x0000, 0x000b, 0); + ultracam_veio(uvd, 0x01, 0x0000, 0x000c, 0); + ultracam_veio(uvd, 0x01, 0x0000, 0x000d, 0); + ultracam_veio(uvd, 0x01, 0x0000, 0x000e, 0); + ultracam_veio(uvd, 0x01, 0x0000, 0x000f, 0); + ultracam_veio(uvd, 0x01, 0x0000, 0x0010, 0); + ultracam_veio(uvd, 0x01, 0x000b, 0x0008, 1); + ultracam_veio(uvd, 0x01, 0x0034, 0x0009, 1); + ultracam_veio(uvd, 0x01, 0x0000, 0x000a, 1); + ultracam_veio(uvd, 0x01, 0x002e, 0x000b, 1); + ultracam_veio(uvd, 0x01, 0x00d6, 0x000c, 1); + ultracam_veio(uvd, 0x01, 0x00fc, 0x000d, 1); + ultracam_veio(uvd, 0x01, 0x00f1, 0x000e, 1); + ultracam_veio(uvd, 0x01, 0x00da, 0x000f, 1); + ultracam_veio(uvd, 0x01, 0x0036, 0x0010, 1); + ultracam_veio(uvd, 0x01, 0x0000, 0x0001, 0); + ultracam_veio(uvd, 0x01, 0x0064, 0x0001, 1); + ultracam_veio(uvd, 0x01, 0x0059, 0x0051, 1); + ultracam_veio(uvd, 0x01, 0x003f, 0x0052, 1); + ultracam_veio(uvd, 0x01, 0x0094, 0x0053, 1); + ultracam_veio(uvd, 0x01, 0x00ff, 0x0011, 1); + ultracam_veio(uvd, 0x01, 0x0003, 0x0012, 1); + ultracam_veio(uvd, 0x01, 0x00f7, 0x0013, 1); + ultracam_veio(uvd, 0x00, 0x0009, 0x0011, 1); + ultracam_veio(uvd, 0x00, 0x0000, 0x0001, 1); + ultracam_veio(uvd, 0x00, 0x0000, 0x0000, 1); + ultracam_veio(uvd, 0x00, 0x0020, 0x00c1, 1); + ultracam_veio(uvd, 0x00, 0x0010, 0x00c2, 1); + ultracam_veio(uvd, 0x00, 0x0000, 0x00ca, 1); + ultracam_alternateSetting(uvd, 0x04); + ultracam_veio(uvd, 0x02, 0x0000, 0x0001, 1); + ultracam_veio(uvd, 0x02, 0x0000, 0x0001, 1); + ultracam_veio(uvd, 0x02, 0x0000, 0x0006, 1); + ultracam_veio(uvd, 0x02, 0x9000, 0x0007, 1); + ultracam_veio(uvd, 0x02, 0x0042, 0x0001, 1); + ultracam_veio(uvd, 0x02, 0x0000, 0x000b, 0); + ultracam_resetPipe(uvd); + ULTRACAM_T(uvd)->initialized = (setup_ok != 0); + } + return setup_ok; +} + +static void ultracam_configure_video(struct uvd *uvd) +{ + if (uvd == NULL) + return; + + RESTRICT_TO_RANGE(init_brightness, 0, 255); + RESTRICT_TO_RANGE(init_contrast, 0, 255); + RESTRICT_TO_RANGE(init_color, 0, 255); + RESTRICT_TO_RANGE(init_hue, 0, 255); + RESTRICT_TO_RANGE(hue_correction, 0, 255); + + memset(&uvd->vpic, 0, sizeof(uvd->vpic)); + memset(&uvd->vpic_old, 0x55, sizeof(uvd->vpic_old)); + + uvd->vpic.colour = init_color << 8; + uvd->vpic.hue = init_hue << 8; + uvd->vpic.brightness = init_brightness << 8; + uvd->vpic.contrast = init_contrast << 8; + uvd->vpic.whiteness = 105 << 8; /* This one isn't used */ + uvd->vpic.depth = 24; + uvd->vpic.palette = VIDEO_PALETTE_RGB24; + + memset(&uvd->vcap, 0, sizeof(uvd->vcap)); + strcpy(uvd->vcap.name, "IBM Ultra Camera"); + uvd->vcap.type = VID_TYPE_CAPTURE; + uvd->vcap.channels = 1; + uvd->vcap.audios = 0; + uvd->vcap.maxwidth = VIDEOSIZE_X(uvd->canvas); + uvd->vcap.maxheight = VIDEOSIZE_Y(uvd->canvas); + uvd->vcap.minwidth = min_canvasWidth; + uvd->vcap.minheight = min_canvasHeight; + + memset(&uvd->vchan, 0, sizeof(uvd->vchan)); + uvd->vchan.flags = 0; + uvd->vchan.tuners = 0; + uvd->vchan.channel = 0; + uvd->vchan.type = VIDEO_TYPE_CAMERA; + strcpy(uvd->vchan.name, "Camera"); +} + +/* + * ultracam_probe() + * + * This procedure queries device descriptor and accepts the interface + * if it looks like our camera. + * + * History: + * 12-Nov-2000 Reworked to comply with new probe() signature. + * 23-Jan-2001 Added compatibility with 2.2.x kernels. + */ +static int ultracam_probe(struct usb_interface *intf, const struct usb_device_id *devid) +{ + struct usb_device *dev = interface_to_usbdev(intf); + struct uvd *uvd = NULL; + int ix, i, nas; + int actInterface=-1, inactInterface=-1, maxPS=0; + unsigned char video_ep = 0; + + if (debug >= 1) + info("ultracam_probe(%p)", intf); + + /* We don't handle multi-config cameras */ + if (dev->descriptor.bNumConfigurations != 1) + return -ENODEV; + + info("IBM Ultra camera found (rev. 0x%04x)", + le16_to_cpu(dev->descriptor.bcdDevice)); + + /* Validate found interface: must have one ISO endpoint */ + nas = intf->num_altsetting; + if (debug > 0) + info("Number of alternate settings=%d.", nas); + if (nas < 8) { + err("Too few alternate settings for this camera!"); + return -ENODEV; + } + /* Validate all alternate settings */ + for (ix=0; ix < nas; ix++) { + const struct usb_host_interface *interface; + const struct usb_endpoint_descriptor *endpoint; + + interface = &intf->altsetting[ix]; + i = interface->desc.bAlternateSetting; + if (interface->desc.bNumEndpoints != 1) { + err("Interface %d. has %u. endpoints!", + interface->desc.bInterfaceNumber, + (unsigned)(interface->desc.bNumEndpoints)); + return -ENODEV; + } + endpoint = &interface->endpoint[0].desc; + if (video_ep == 0) + video_ep = endpoint->bEndpointAddress; + else if (video_ep != endpoint->bEndpointAddress) { + err("Alternate settings have different endpoint addresses!"); + return -ENODEV; + } + if ((endpoint->bmAttributes & 0x03) != 0x01) { + err("Interface %d. has non-ISO endpoint!", + interface->desc.bInterfaceNumber); + return -ENODEV; + } + if ((endpoint->bEndpointAddress & 0x80) == 0) { + err("Interface %d. has ISO OUT endpoint!", + interface->desc.bInterfaceNumber); + return -ENODEV; + } + if (le16_to_cpu(endpoint->wMaxPacketSize) == 0) { + if (inactInterface < 0) + inactInterface = i; + else { + err("More than one inactive alt. setting!"); + return -ENODEV; + } + } else { + if (actInterface < 0) { + actInterface = i; + maxPS = le16_to_cpu(endpoint->wMaxPacketSize); + if (debug > 0) + info("Active setting=%d. maxPS=%d.", i, maxPS); + } else { + /* Got another active alt. setting */ + if (maxPS < le16_to_cpu(endpoint->wMaxPacketSize)) { + /* This one is better! */ + actInterface = i; + maxPS = le16_to_cpu(endpoint->wMaxPacketSize); + if (debug > 0) { + info("Even better ctive setting=%d. maxPS=%d.", + i, maxPS); + } + } + } + } + } + if ((maxPS <= 0) || (actInterface < 0) || (inactInterface < 0)) { + err("Failed to recognize the camera!"); + return -ENODEV; + } + + uvd = usbvideo_AllocateDevice(cams); + if (uvd != NULL) { + /* Here uvd is a fully allocated uvd object */ + uvd->flags = flags; + uvd->debug = debug; + uvd->dev = dev; + uvd->iface = intf->altsetting->desc.bInterfaceNumber; + uvd->ifaceAltInactive = inactInterface; + uvd->ifaceAltActive = actInterface; + uvd->video_endp = video_ep; + uvd->iso_packet_len = maxPS; + uvd->paletteBits = 1L << VIDEO_PALETTE_RGB24; + uvd->defaultPalette = VIDEO_PALETTE_RGB24; + uvd->canvas = VIDEOSIZE(640, 480); /* FIXME */ + uvd->videosize = uvd->canvas; /* ultracam_size_to_videosize(size);*/ + + /* Initialize ibmcam-specific data */ + assert(ULTRACAM_T(uvd) != NULL); + ULTRACAM_T(uvd)->camera_model = 0; /* Not used yet */ + ULTRACAM_T(uvd)->initialized = 0; + + ultracam_configure_video(uvd); + + i = usbvideo_RegisterVideoDevice(uvd); + if (i != 0) { + err("usbvideo_RegisterVideoDevice() failed."); + uvd = NULL; + } + } + + if (uvd) { + usb_set_intfdata (intf, uvd); + return 0; + } + return -EIO; +} + + +static struct usb_device_id id_table[] = { + { USB_DEVICE(ULTRACAM_VENDOR_ID, ULTRACAM_PRODUCT_ID) }, + { } /* Terminating entry */ +}; + +/* + * ultracam_init() + * + * This code is run to initialize the driver. + */ +static int __init ultracam_init(void) +{ + struct usbvideo_cb cbTbl; + memset(&cbTbl, 0, sizeof(cbTbl)); + cbTbl.probe = ultracam_probe; + cbTbl.setupOnOpen = ultracam_setup_on_open; + cbTbl.videoStart = ultracam_video_start; + cbTbl.videoStop = ultracam_video_stop; + cbTbl.processData = ultracam_ProcessIsocData; + cbTbl.postProcess = usbvideo_DeinterlaceFrame; + cbTbl.adjustPicture = ultracam_adjust_picture; + cbTbl.getFPS = ultracam_calculate_fps; + return usbvideo_register( + &cams, + MAX_CAMERAS, + sizeof(ultracam_t), + "ultracam", + &cbTbl, + THIS_MODULE, + id_table); +} + +static void __exit ultracam_cleanup(void) +{ + usbvideo_Deregister(&cams); +} + +MODULE_DEVICE_TABLE(usb, id_table); +MODULE_LICENSE("GPL"); + +module_init(ultracam_init); +module_exit(ultracam_cleanup); |