diff options
author | Hans Verkuil <hverkuil@xs4all.nl> | 2010-05-10 06:51:02 (GMT) |
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committer | Mauro Carvalho Chehab <mchehab@redhat.com> | 2010-06-01 04:19:04 (GMT) |
commit | 483d67ff0a208b43f0b97fca91d3a142afaba7fa (patch) | |
tree | 96447b0b3ecac1492235b076c25330a3360a604a /drivers/media/video/bw-qcam.c | |
parent | 67a3e12b05e055c0415c556a315a3d3eb637e29e (diff) | |
download | linux-fsl-qoriq-483d67ff0a208b43f0b97fca91d3a142afaba7fa.tar.xz |
V4L/DVB: bw-qcam: convert to V4L2
Note: due to lack of hardware I was not able to test this conversion.
But it is pretty straightforward, so I do not expect any problems.
Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Diffstat (limited to 'drivers/media/video/bw-qcam.c')
-rw-r--r-- | drivers/media/video/bw-qcam.c | 759 |
1 files changed, 414 insertions, 345 deletions
diff --git a/drivers/media/video/bw-qcam.c b/drivers/media/video/bw-qcam.c index 3c9e754..935e0c9 100644 --- a/drivers/media/video/bw-qcam.c +++ b/drivers/media/video/bw-qcam.c @@ -66,19 +66,58 @@ OTHER DEALINGS IN THE SOFTWARE. #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 */ @@ -93,22 +132,26 @@ module_param(video_nr, int, 0); * 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) */ @@ -124,126 +167,11 @@ static inline void write_lpcontrol(struct qcam_device *q, int d) 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; @@ -286,7 +214,7 @@ static int qc_waithand(struct qcam_device *q, int val) * (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; @@ -309,6 +237,43 @@ static unsigned int qc_waithand2(struct qcam_device *q, int val) 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 @@ -317,7 +282,7 @@ static unsigned int qc_waithand2(struct qcam_device *q, int val) 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; @@ -358,41 +323,6 @@ static int qc_detect(struct qcam_device *q) } } - -/* 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 @@ -402,7 +332,7 @@ static void qc_reset(struct qcam_device *q) * 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; @@ -442,10 +372,45 @@ static int qc_setscanmode(struct qcam_device *q) } +/* 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; @@ -499,7 +464,7 @@ static void qc_set(struct qcam_device *q) 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; @@ -590,7 +555,7 @@ static inline int qc_readbytes(struct qcam_device *q, char buffer[]) * 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; @@ -674,171 +639,206 @@ static long qc_capture(struct qcam_device *q, char __user *buf, unsigned long le * 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); @@ -858,43 +858,112 @@ static ssize_t qcam_read(struct file *file, char __user *buf, 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); @@ -919,7 +988,7 @@ static int init_bwqcam(struct parport *port) 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); @@ -932,7 +1001,7 @@ static int init_bwqcam(struct parport *port) 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); @@ -983,7 +1052,7 @@ static void bwqcam_detach(struct parport *port) { 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); |