#include <linux/delay.h>
#include <linux/errno.h>
#include <linux/fs.h>
-#include <linux/init.h>
#include <linux/kernel.h>
#include <linux/slab.h>
#include <linux/mm.h>
#include <linux/parport.h>
#include <linux/sched.h>
-#include <linux/videodev.h>
-#include <media/v4l2-common.h>
-#include <media/v4l2-ioctl.h>
+#include <linux/version.h>
+#include <linux/videodev2.h>
#include <linux/mutex.h>
#include <asm/uaccess.h>
-
-#include "bw-qcam.h"
+#include <media/v4l2-common.h>
+#include <media/v4l2-ioctl.h>
+#include <media/v4l2-device.h>
+
+/* One from column A... */
+#define QC_NOTSET 0
+#define QC_UNIDIR 1
+#define QC_BIDIR 2
+#define QC_SERIAL 3
+
+/* ... and one from column B */
+#define QC_ANY 0x00
+#define QC_FORCE_UNIDIR 0x10
+#define QC_FORCE_BIDIR 0x20
+#define QC_FORCE_SERIAL 0x30
+/* in the port_mode member */
+
+#define QC_MODE_MASK 0x07
+#define QC_FORCE_MASK 0x70
+
+#define MAX_HEIGHT 243
+#define MAX_WIDTH 336
+
+/* Bit fields for status flags */
+#define QC_PARAM_CHANGE 0x01 /* Camera status change has occurred */
+
+struct qcam {
+ struct v4l2_device v4l2_dev;
+ struct video_device vdev;
+ struct pardevice *pdev;
+ struct parport *pport;
+ struct mutex lock;
+ int width, height;
+ int bpp;
+ int mode;
+ int contrast, brightness, whitebal;
+ int port_mode;
+ int transfer_scale;
+ int top, left;
+ int status;
+ unsigned int saved_bits;
+ unsigned long in_use;
+};
static unsigned int maxpoll = 250; /* Maximum busy-loop count for qcam I/O */
static unsigned int yieldlines = 4; /* Yield after this many during capture */
* immediately attempt to initialize qcam */
module_param(force_init, int, 0);
-static inline int read_lpstatus(struct qcam_device *q)
+#define MAX_CAMS 4
+static struct qcam *qcams[MAX_CAMS];
+static unsigned int num_cams;
+
+static inline int read_lpstatus(struct qcam *q)
{
return parport_read_status(q->pport);
}
-static inline int read_lpdata(struct qcam_device *q)
+static inline int read_lpdata(struct qcam *q)
{
return parport_read_data(q->pport);
}
-static inline void write_lpdata(struct qcam_device *q, int d)
+static inline void write_lpdata(struct qcam *q, int d)
{
parport_write_data(q->pport, d);
}
-static inline void write_lpcontrol(struct qcam_device *q, int d)
+static void write_lpcontrol(struct qcam *q, int d)
{
if (d & 0x20) {
/* Set bidirectional mode to reverse (data in) */
parport_write_control(q->pport, d);
}
-static int qc_waithand(struct qcam_device *q, int val);
-static int qc_command(struct qcam_device *q, int command);
-static int qc_readparam(struct qcam_device *q);
-static int qc_setscanmode(struct qcam_device *q);
-static int qc_readbytes(struct qcam_device *q, char buffer[]);
-
-static struct video_device qcam_template;
-
-static int qc_calibrate(struct qcam_device *q)
-{
- /*
- * Bugfix by Hanno Mueller hmueller@kabel.de, Mai 21 96
- * The white balance is an individiual value for each
- * quickcam.
- */
-
- int value;
- int count = 0;
-
- qc_command(q, 27); /* AutoAdjustOffset */
- qc_command(q, 0); /* Dummy Parameter, ignored by the camera */
-
- /* GetOffset (33) will read 255 until autocalibration */
- /* is finished. After that, a value of 1-254 will be */
- /* returned. */
-
- do {
- qc_command(q, 33);
- value = qc_readparam(q);
- mdelay(1);
- schedule();
- count++;
- } while (value == 0xff && count < 2048);
-
- q->whitebal = value;
- return value;
-}
-
-/* Initialize the QuickCam driver control structure. This is where
- * defaults are set for people who don't have a config file.*/
-
-static struct qcam_device *qcam_init(struct parport *port)
-{
- struct qcam_device *q;
-
- q = kmalloc(sizeof(struct qcam_device), GFP_KERNEL);
- if (q == NULL)
- return NULL;
-
- q->pport = port;
- q->pdev = parport_register_device(port, "bw-qcam", NULL, NULL,
- NULL, 0, NULL);
- if (q->pdev == NULL) {
- printk(KERN_ERR "bw-qcam: couldn't register for %s.\n",
- port->name);
- kfree(q);
- return NULL;
- }
-
- memcpy(&q->vdev, &qcam_template, sizeof(qcam_template));
-
- mutex_init(&q->lock);
-
- q->port_mode = (QC_ANY | QC_NOTSET);
- q->width = 320;
- q->height = 240;
- q->bpp = 4;
- q->transfer_scale = 2;
- q->contrast = 192;
- q->brightness = 180;
- q->whitebal = 105;
- q->top = 1;
- q->left = 14;
- q->mode = -1;
- q->status = QC_PARAM_CHANGE;
- return q;
-}
-
-
-/* qc_command is probably a bit of a misnomer -- it's used to send
- * bytes *to* the camera. Generally, these bytes are either commands
- * or arguments to commands, so the name fits, but it still bugs me a
- * bit. See the documentation for a list of commands. */
-
-static int qc_command(struct qcam_device *q, int command)
-{
- int n1, n2;
- int cmd;
-
- write_lpdata(q, command);
- write_lpcontrol(q, 6);
-
- n1 = qc_waithand(q, 1);
-
- write_lpcontrol(q, 0xe);
- n2 = qc_waithand(q, 0);
-
- cmd = (n1 & 0xf0) | ((n2 & 0xf0) >> 4);
- return cmd;
-}
-
-static int qc_readparam(struct qcam_device *q)
-{
- int n1, n2;
- int cmd;
-
- write_lpcontrol(q, 6);
- n1 = qc_waithand(q, 1);
-
- write_lpcontrol(q, 0xe);
- n2 = qc_waithand(q, 0);
-
- cmd = (n1 & 0xf0) | ((n2 & 0xf0) >> 4);
- return cmd;
-}
/* qc_waithand busy-waits for a handshake signal from the QuickCam.
* Almost all communication with the camera requires handshaking. */
-static int qc_waithand(struct qcam_device *q, int val)
+static int qc_waithand(struct qcam *q, int val)
{
int status;
int runs = 0;
* (bit 3 of status register). It also returns the last value read,
* since this data is useful. */
-static unsigned int qc_waithand2(struct qcam_device *q, int val)
+static unsigned int qc_waithand2(struct qcam *q, int val)
{
unsigned int status;
int runs = 0;
return status;
}
+/* qc_command is probably a bit of a misnomer -- it's used to send
+ * bytes *to* the camera. Generally, these bytes are either commands
+ * or arguments to commands, so the name fits, but it still bugs me a
+ * bit. See the documentation for a list of commands. */
+
+static int qc_command(struct qcam *q, int command)
+{
+ int n1, n2;
+ int cmd;
+
+ write_lpdata(q, command);
+ write_lpcontrol(q, 6);
+
+ n1 = qc_waithand(q, 1);
+
+ write_lpcontrol(q, 0xe);
+ n2 = qc_waithand(q, 0);
+
+ cmd = (n1 & 0xf0) | ((n2 & 0xf0) >> 4);
+ return cmd;
+}
+
+static int qc_readparam(struct qcam *q)
+{
+ int n1, n2;
+ int cmd;
+
+ write_lpcontrol(q, 6);
+ n1 = qc_waithand(q, 1);
+
+ write_lpcontrol(q, 0xe);
+ n2 = qc_waithand(q, 0);
+
+ cmd = (n1 & 0xf0) | ((n2 & 0xf0) >> 4);
+ return cmd;
+}
+
/* Try to detect a QuickCam. It appears to flash the upper 4 bits of
the status register at 5-10 Hz. This is only used in the autoprobe
almost completely safe, while their method screws up my printer if
I plug it in before the camera. */
-static int qc_detect(struct qcam_device *q)
+static int qc_detect(struct qcam *q)
{
int reg, lastreg;
int count = 0;
}
}
-
-/* Reset the QuickCam. This uses the same sequence the Windows
- * QuickPic program uses. Someone with a bi-directional port should
- * check that bi-directional mode is detected right, and then
- * implement bi-directional mode in qc_readbyte(). */
-
-static void qc_reset(struct qcam_device *q)
-{
- switch (q->port_mode & QC_FORCE_MASK) {
- case QC_FORCE_UNIDIR:
- q->port_mode = (q->port_mode & ~QC_MODE_MASK) | QC_UNIDIR;
- break;
-
- case QC_FORCE_BIDIR:
- q->port_mode = (q->port_mode & ~QC_MODE_MASK) | QC_BIDIR;
- break;
-
- case QC_ANY:
- write_lpcontrol(q, 0x20);
- write_lpdata(q, 0x75);
-
- if (read_lpdata(q) != 0x75)
- q->port_mode = (q->port_mode & ~QC_MODE_MASK) | QC_BIDIR;
- else
- q->port_mode = (q->port_mode & ~QC_MODE_MASK) | QC_UNIDIR;
- break;
- }
-
- write_lpcontrol(q, 0xb);
- udelay(250);
- write_lpcontrol(q, 0xe);
- qc_setscanmode(q); /* in case port_mode changed */
-}
-
-
/* Decide which scan mode to use. There's no real requirement that
* the scanmode match the resolution in q->height and q-> width -- the
* camera takes the picture at the resolution specified in the
* returned. If the scan is smaller, then the rest of the image
* returned contains garbage. */
-static int qc_setscanmode(struct qcam_device *q)
+static int qc_setscanmode(struct qcam *q)
{
int old_mode = q->mode;
}
+/* Reset the QuickCam. This uses the same sequence the Windows
+ * QuickPic program uses. Someone with a bi-directional port should
+ * check that bi-directional mode is detected right, and then
+ * implement bi-directional mode in qc_readbyte(). */
+
+static void qc_reset(struct qcam *q)
+{
+ switch (q->port_mode & QC_FORCE_MASK) {
+ case QC_FORCE_UNIDIR:
+ q->port_mode = (q->port_mode & ~QC_MODE_MASK) | QC_UNIDIR;
+ break;
+
+ case QC_FORCE_BIDIR:
+ q->port_mode = (q->port_mode & ~QC_MODE_MASK) | QC_BIDIR;
+ break;
+
+ case QC_ANY:
+ write_lpcontrol(q, 0x20);
+ write_lpdata(q, 0x75);
+
+ if (read_lpdata(q) != 0x75)
+ q->port_mode = (q->port_mode & ~QC_MODE_MASK) | QC_BIDIR;
+ else
+ q->port_mode = (q->port_mode & ~QC_MODE_MASK) | QC_UNIDIR;
+ break;
+ }
+
+ write_lpcontrol(q, 0xb);
+ udelay(250);
+ write_lpcontrol(q, 0xe);
+ qc_setscanmode(q); /* in case port_mode changed */
+}
+
+
+
/* Reset the QuickCam and program for brightness, contrast,
* white-balance, and resolution. */
-static void qc_set(struct qcam_device *q)
+static void qc_set(struct qcam *q)
{
int val;
int val2;
the supplied buffer. It returns the number of bytes read,
or -1 on error. */
-static inline int qc_readbytes(struct qcam_device *q, char buffer[])
+static inline int qc_readbytes(struct qcam *q, char buffer[])
{
int ret = 1;
unsigned int hi, lo;
* n=2^(bit depth)-1. Ask me for more details if you don't understand
* this. */
-static long qc_capture(struct qcam_device *q, char __user *buf, unsigned long len)
+static long qc_capture(struct qcam *q, char __user *buf, unsigned long len)
{
int i, j, k, yield;
int bytes;
* Video4linux interfacing
*/
-static long qcam_do_ioctl(struct file *file, unsigned int cmd, void *arg)
+static int qcam_querycap(struct file *file, void *priv,
+ struct v4l2_capability *vcap)
{
- struct video_device *dev = video_devdata(file);
- struct qcam_device *qcam = (struct qcam_device *)dev;
-
- switch (cmd) {
- case VIDIOCGCAP:
- {
- struct video_capability *b = arg;
- strcpy(b->name, "Quickcam");
- b->type = VID_TYPE_CAPTURE|VID_TYPE_SCALES|VID_TYPE_MONOCHROME;
- b->channels = 1;
- b->audios = 0;
- b->maxwidth = 320;
- b->maxheight = 240;
- b->minwidth = 80;
- b->minheight = 60;
- return 0;
- }
- case VIDIOCGCHAN:
- {
- struct video_channel *v = arg;
- if (v->channel != 0)
- return -EINVAL;
- v->flags = 0;
- v->tuners = 0;
- /* Good question.. its composite or SVHS so.. */
- v->type = VIDEO_TYPE_CAMERA;
- strcpy(v->name, "Camera");
- return 0;
- }
- case VIDIOCSCHAN:
- {
- struct video_channel *v = arg;
- if (v->channel != 0)
- return -EINVAL;
- return 0;
- }
- case VIDIOCGTUNER:
- {
- struct video_tuner *v = arg;
- if (v->tuner)
- return -EINVAL;
- strcpy(v->name, "Format");
- v->rangelow = 0;
- v->rangehigh = 0;
- v->flags = 0;
- v->mode = VIDEO_MODE_AUTO;
- return 0;
- }
- case VIDIOCSTUNER:
- {
- struct video_tuner *v = arg;
- if (v->tuner)
- return -EINVAL;
- if (v->mode != VIDEO_MODE_AUTO)
- return -EINVAL;
- return 0;
- }
- case VIDIOCGPICT:
- {
- struct video_picture *p = arg;
- p->colour = 0x8000;
- p->hue = 0x8000;
- p->brightness = qcam->brightness << 8;
- p->contrast = qcam->contrast << 8;
- p->whiteness = qcam->whitebal << 8;
- p->depth = qcam->bpp;
- p->palette = VIDEO_PALETTE_GREY;
- return 0;
- }
- case VIDIOCSPICT:
- {
- struct video_picture *p = arg;
- if (p->palette != VIDEO_PALETTE_GREY)
- return -EINVAL;
- if (p->depth != 4 && p->depth != 6)
- return -EINVAL;
-
- /*
- * Now load the camera.
- */
-
- qcam->brightness = p->brightness >> 8;
- qcam->contrast = p->contrast >> 8;
- qcam->whitebal = p->whiteness >> 8;
- qcam->bpp = p->depth;
-
- mutex_lock(&qcam->lock);
- qc_setscanmode(qcam);
- mutex_unlock(&qcam->lock);
- qcam->status |= QC_PARAM_CHANGE;
+ struct qcam *qcam = video_drvdata(file);
- return 0;
- }
- case VIDIOCSWIN:
- {
- struct video_window *vw = arg;
- if (vw->flags)
- return -EINVAL;
- if (vw->clipcount)
- return -EINVAL;
- if (vw->height < 60 || vw->height > 240)
- return -EINVAL;
- if (vw->width < 80 || vw->width > 320)
- return -EINVAL;
-
- qcam->width = 320;
- qcam->height = 240;
- qcam->transfer_scale = 4;
-
- if (vw->width >= 160 && vw->height >= 120)
- qcam->transfer_scale = 2;
- if (vw->width >= 320 && vw->height >= 240) {
- qcam->width = 320;
- qcam->height = 240;
- qcam->transfer_scale = 1;
- }
- mutex_lock(&qcam->lock);
- qc_setscanmode(qcam);
- mutex_unlock(&qcam->lock);
+ strlcpy(vcap->driver, qcam->v4l2_dev.name, sizeof(vcap->driver));
+ strlcpy(vcap->card, "B&W Quickcam", sizeof(vcap->card));
+ strlcpy(vcap->bus_info, "parport", sizeof(vcap->bus_info));
+ vcap->version = KERNEL_VERSION(0, 0, 2);
+ vcap->capabilities = V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_READWRITE;
+ return 0;
+}
- /* We must update the camera before we grab. We could
- just have changed the grab size */
- qcam->status |= QC_PARAM_CHANGE;
+static int qcam_enum_input(struct file *file, void *fh, struct v4l2_input *vin)
+{
+ if (vin->index > 0)
+ return -EINVAL;
+ strlcpy(vin->name, "Camera", sizeof(vin->name));
+ vin->type = V4L2_INPUT_TYPE_CAMERA;
+ vin->audioset = 0;
+ vin->tuner = 0;
+ vin->std = 0;
+ vin->status = 0;
+ return 0;
+}
- /* Ok we figured out what to use from our wide choice */
- return 0;
- }
- case VIDIOCGWIN:
- {
- struct video_window *vw = arg;
+static int qcam_g_input(struct file *file, void *fh, unsigned int *inp)
+{
+ *inp = 0;
+ return 0;
+}
- memset(vw, 0, sizeof(*vw));
- vw->width = qcam->width / qcam->transfer_scale;
- vw->height = qcam->height / qcam->transfer_scale;
- return 0;
- }
- case VIDIOCKEY:
- return 0;
- case VIDIOCCAPTURE:
- case VIDIOCGFBUF:
- case VIDIOCSFBUF:
- case VIDIOCGFREQ:
- case VIDIOCSFREQ:
- case VIDIOCGAUDIO:
- case VIDIOCSAUDIO:
- return -EINVAL;
+static int qcam_s_input(struct file *file, void *fh, unsigned int inp)
+{
+ return (inp > 0) ? -EINVAL : 0;
+}
+
+static int qcam_queryctrl(struct file *file, void *priv,
+ struct v4l2_queryctrl *qc)
+{
+ switch (qc->id) {
+ case V4L2_CID_BRIGHTNESS:
+ return v4l2_ctrl_query_fill(qc, 0, 255, 1, 180);
+ case V4L2_CID_CONTRAST:
+ return v4l2_ctrl_query_fill(qc, 0, 255, 1, 192);
+ case V4L2_CID_GAMMA:
+ return v4l2_ctrl_query_fill(qc, 0, 255, 1, 105);
+ }
+ return -EINVAL;
+}
+
+static int qcam_g_ctrl(struct file *file, void *priv,
+ struct v4l2_control *ctrl)
+{
+ struct qcam *qcam = video_drvdata(file);
+ int ret = 0;
+
+ switch (ctrl->id) {
+ case V4L2_CID_BRIGHTNESS:
+ ctrl->value = qcam->brightness;
+ break;
+ case V4L2_CID_CONTRAST:
+ ctrl->value = qcam->contrast;
+ break;
+ case V4L2_CID_GAMMA:
+ ctrl->value = qcam->whitebal;
+ break;
default:
- return -ENOIOCTLCMD;
+ ret = -EINVAL;
+ break;
}
+ return ret;
+}
+
+static int qcam_s_ctrl(struct file *file, void *priv,
+ struct v4l2_control *ctrl)
+{
+ struct qcam *qcam = video_drvdata(file);
+ int ret = 0;
+
+ mutex_lock(&qcam->lock);
+ switch (ctrl->id) {
+ case V4L2_CID_BRIGHTNESS:
+ qcam->brightness = ctrl->value;
+ break;
+ case V4L2_CID_CONTRAST:
+ qcam->contrast = ctrl->value;
+ break;
+ case V4L2_CID_GAMMA:
+ qcam->whitebal = ctrl->value;
+ break;
+ default:
+ ret = -EINVAL;
+ break;
+ }
+ if (ret == 0) {
+ qc_setscanmode(qcam);
+ qcam->status |= QC_PARAM_CHANGE;
+ }
+ mutex_unlock(&qcam->lock);
+ return ret;
+}
+
+static int qcam_g_fmt_vid_cap(struct file *file, void *fh, struct v4l2_format *fmt)
+{
+ struct qcam *qcam = video_drvdata(file);
+ struct v4l2_pix_format *pix = &fmt->fmt.pix;
+
+ pix->width = qcam->width / qcam->transfer_scale;
+ pix->height = qcam->height / qcam->transfer_scale;
+ pix->pixelformat = (qcam->bpp == 4) ? V4L2_PIX_FMT_Y4 : V4L2_PIX_FMT_Y6;
+ pix->field = V4L2_FIELD_NONE;
+ pix->bytesperline = qcam->width;
+ pix->sizeimage = qcam->width * qcam->height;
+ /* Just a guess */
+ pix->colorspace = V4L2_COLORSPACE_SRGB;
+ return 0;
+}
+
+static int qcam_try_fmt_vid_cap(struct file *file, void *fh, struct v4l2_format *fmt)
+{
+ struct v4l2_pix_format *pix = &fmt->fmt.pix;
+
+ if (pix->height <= 60 || pix->width <= 80) {
+ pix->height = 60;
+ pix->width = 80;
+ } else if (pix->height <= 120 || pix->width <= 160) {
+ pix->height = 120;
+ pix->width = 160;
+ } else {
+ pix->height = 240;
+ pix->width = 320;
+ }
+ if (pix->pixelformat != V4L2_PIX_FMT_Y4 &&
+ pix->pixelformat != V4L2_PIX_FMT_Y6)
+ pix->pixelformat = V4L2_PIX_FMT_Y4;
+ pix->field = V4L2_FIELD_NONE;
+ pix->bytesperline = pix->width;
+ pix->sizeimage = pix->width * pix->height;
+ /* Just a guess */
+ pix->colorspace = V4L2_COLORSPACE_SRGB;
+ return 0;
+}
+
+static int qcam_s_fmt_vid_cap(struct file *file, void *fh, struct v4l2_format *fmt)
+{
+ struct qcam *qcam = video_drvdata(file);
+ struct v4l2_pix_format *pix = &fmt->fmt.pix;
+ int ret = qcam_try_fmt_vid_cap(file, fh, fmt);
+
+ if (ret)
+ return ret;
+ qcam->width = 320;
+ qcam->height = 240;
+ if (pix->height == 60)
+ qcam->transfer_scale = 4;
+ else if (pix->height == 120)
+ qcam->transfer_scale = 2;
+ else
+ qcam->transfer_scale = 1;
+ if (pix->pixelformat == V4L2_PIX_FMT_Y6)
+ qcam->bpp = 6;
+ else
+ qcam->bpp = 4;
+
+ mutex_lock(&qcam->lock);
+ qc_setscanmode(qcam);
+ /* We must update the camera before we grab. We could
+ just have changed the grab size */
+ qcam->status |= QC_PARAM_CHANGE;
+ mutex_unlock(&qcam->lock);
return 0;
}
-static long qcam_ioctl(struct file *file,
- unsigned int cmd, unsigned long arg)
+static int qcam_enum_fmt_vid_cap(struct file *file, void *fh, struct v4l2_fmtdesc *fmt)
{
- return video_usercopy(file, cmd, arg, qcam_do_ioctl);
+ static struct v4l2_fmtdesc formats[] = {
+ { 0, 0, 0,
+ "4-Bit Monochrome", V4L2_PIX_FMT_Y4,
+ { 0, 0, 0, 0 }
+ },
+ { 0, 0, 0,
+ "6-Bit Monochrome", V4L2_PIX_FMT_Y6,
+ { 0, 0, 0, 0 }
+ },
+ };
+ enum v4l2_buf_type type = fmt->type;
+
+ if (fmt->index > 1)
+ return -EINVAL;
+
+ *fmt = formats[fmt->index];
+ fmt->type = type;
+ return 0;
}
static ssize_t qcam_read(struct file *file, char __user *buf,
size_t count, loff_t *ppos)
{
- struct video_device *v = video_devdata(file);
- struct qcam_device *qcam = (struct qcam_device *)v;
+ struct qcam *qcam = video_drvdata(file);
int len;
parport_claim_or_block(qcam->pdev);
return len;
}
-static int qcam_exclusive_open(struct file *file)
+static const struct v4l2_file_operations qcam_fops = {
+ .owner = THIS_MODULE,
+ .ioctl = video_ioctl2,
+ .read = qcam_read,
+};
+
+static const struct v4l2_ioctl_ops qcam_ioctl_ops = {
+ .vidioc_querycap = qcam_querycap,
+ .vidioc_g_input = qcam_g_input,
+ .vidioc_s_input = qcam_s_input,
+ .vidioc_enum_input = qcam_enum_input,
+ .vidioc_queryctrl = qcam_queryctrl,
+ .vidioc_g_ctrl = qcam_g_ctrl,
+ .vidioc_s_ctrl = qcam_s_ctrl,
+ .vidioc_enum_fmt_vid_cap = qcam_enum_fmt_vid_cap,
+ .vidioc_g_fmt_vid_cap = qcam_g_fmt_vid_cap,
+ .vidioc_s_fmt_vid_cap = qcam_s_fmt_vid_cap,
+ .vidioc_try_fmt_vid_cap = qcam_try_fmt_vid_cap,
+};
+
+/* Initialize the QuickCam driver control structure. This is where
+ * defaults are set for people who don't have a config file.*/
+
+static struct qcam *qcam_init(struct parport *port)
{
- struct video_device *dev = video_devdata(file);
- struct qcam_device *qcam = (struct qcam_device *)dev;
+ struct qcam *qcam;
+ struct v4l2_device *v4l2_dev;
+
+ qcam = kzalloc(sizeof(struct qcam), GFP_KERNEL);
+ if (qcam == NULL)
+ return NULL;
+
+ v4l2_dev = &qcam->v4l2_dev;
+ strlcpy(v4l2_dev->name, "bw-qcam", sizeof(v4l2_dev->name));
- return test_and_set_bit(0, &qcam->in_use) ? -EBUSY : 0;
+ if (v4l2_device_register(NULL, v4l2_dev) < 0) {
+ v4l2_err(v4l2_dev, "Could not register v4l2_device\n");
+ return NULL;
+ }
+
+ qcam->pport = port;
+ qcam->pdev = parport_register_device(port, "bw-qcam", NULL, NULL,
+ NULL, 0, NULL);
+ if (qcam->pdev == NULL) {
+ v4l2_err(v4l2_dev, "couldn't register for %s.\n", port->name);
+ kfree(qcam);
+ return NULL;
+ }
+
+ strlcpy(qcam->vdev.name, "Connectix QuickCam", sizeof(qcam->vdev.name));
+ qcam->vdev.v4l2_dev = v4l2_dev;
+ qcam->vdev.fops = &qcam_fops;
+ qcam->vdev.ioctl_ops = &qcam_ioctl_ops;
+ qcam->vdev.release = video_device_release_empty;
+ video_set_drvdata(&qcam->vdev, qcam);
+
+ mutex_init(&qcam->lock);
+
+ qcam->port_mode = (QC_ANY | QC_NOTSET);
+ qcam->width = 320;
+ qcam->height = 240;
+ qcam->bpp = 4;
+ qcam->transfer_scale = 2;
+ qcam->contrast = 192;
+ qcam->brightness = 180;
+ qcam->whitebal = 105;
+ qcam->top = 1;
+ qcam->left = 14;
+ qcam->mode = -1;
+ qcam->status = QC_PARAM_CHANGE;
+ return qcam;
}
-static int qcam_exclusive_release(struct file *file)
+static int qc_calibrate(struct qcam *q)
{
- struct video_device *dev = video_devdata(file);
- struct qcam_device *qcam = (struct qcam_device *)dev;
+ /*
+ * Bugfix by Hanno Mueller hmueller@kabel.de, Mai 21 96
+ * The white balance is an individual value for each
+ * quickcam.
+ */
- clear_bit(0, &qcam->in_use);
- return 0;
-}
+ int value;
+ int count = 0;
-static const struct v4l2_file_operations qcam_fops = {
- .owner = THIS_MODULE,
- .open = qcam_exclusive_open,
- .release = qcam_exclusive_release,
- .ioctl = qcam_ioctl,
- .read = qcam_read,
-};
-static struct video_device qcam_template = {
- .name = "Connectix Quickcam",
- .fops = &qcam_fops,
- .release = video_device_release_empty,
-};
+ qc_command(q, 27); /* AutoAdjustOffset */
+ qc_command(q, 0); /* Dummy Parameter, ignored by the camera */
-#define MAX_CAMS 4
-static struct qcam_device *qcams[MAX_CAMS];
-static unsigned int num_cams;
+ /* GetOffset (33) will read 255 until autocalibration */
+ /* is finished. After that, a value of 1-254 will be */
+ /* returned. */
+
+ do {
+ qc_command(q, 33);
+ value = qc_readparam(q);
+ mdelay(1);
+ schedule();
+ count++;
+ } while (value == 0xff && count < 2048);
+
+ q->whitebal = value;
+ return value;
+}
static int init_bwqcam(struct parport *port)
{
- struct qcam_device *qcam;
+ struct qcam *qcam;
if (num_cams == MAX_CAMS) {
printk(KERN_ERR "Too many Quickcams (max %d)\n", MAX_CAMS);
parport_release(qcam->pdev);
- printk(KERN_INFO "Connectix Quickcam on %s\n", qcam->pport->name);
+ v4l2_info(&qcam->v4l2_dev, "Connectix Quickcam on %s\n", qcam->pport->name);
if (video_register_device(&qcam->vdev, VFL_TYPE_GRABBER, video_nr) < 0) {
parport_unregister_device(qcam->pdev);
return 0;
}
-static void close_bwqcam(struct qcam_device *qcam)
+static void close_bwqcam(struct qcam *qcam)
{
video_unregister_device(&qcam->vdev);
parport_unregister_device(qcam->pdev);
{
int i;
for (i = 0; i < num_cams; i++) {
- struct qcam_device *qcam = qcams[i];
+ struct qcam *qcam = qcams[i];
if (qcam && qcam->pdev->port == port) {
qcams[i] = NULL;
close_bwqcam(qcam);
git.openpandora.org / pandora-kernel.git / blobdiff