AcoSail/kernel_optimize_test
8
0
Fork 0
forked from luck/tmp_suning_uos_patched
Code Pull Requests Activity

V4L/DVB: bw-qcam: convert to V4L2

Browse Source 
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>
This commit is contained in:
Hans Verkuil 2010-05-10 03:51:02 -03:00 committed by Mauro Carvalho Chehab
parent 67a3e12b05
commit 483d67ff0a
3 changed files with 421 additions and 421 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
drivers/media/video/Kconfig
View File

@ -646,7 +646,7 @@ config VIDEO_PMS
config VIDEO_BWQCAM
tristate "Quickcam BW Video For Linux"
depends on PARPORT && VIDEO_V4L1
depends on PARPORT && VIDEO_V4L2
help
Say Y have if you the black and white version of the QuickCam
camera. See the next option for the color version.

771
drivers/media/video/bw-qcam.c
View File

@ -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 <media/v4l2-common.h>
#include <media/v4l2-ioctl.h>
#include <media/v4l2-device.h>
#include "bw-qcam.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;
struct qcam *qcam = video_drvdata(file);
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;
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);
/* We must update the camera before we grab. We could
just have changed the grab size */
qcam->status |= QC_PARAM_CHANGE;
/* Ok we figured out what to use from our wide choice */
return 0;
}
case VIDIOCGWIN:
{
struct video_window *vw = arg;
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;
default:
return -ENOIOCTLCMD;
}
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;
}
static long qcam_ioctl(struct file *file,
unsigned int cmd, unsigned long arg)
static int qcam_enum_input(struct file *file, void *fh, struct v4l2_input *vin)
{
return video_usercopy(file, cmd, arg, qcam_do_ioctl);
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;
}
static int qcam_g_input(struct file *file, void *fh, unsigned int *inp)
{
*inp = 0;
return 0;
}
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:
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 int qcam_enum_fmt_vid_cap(struct file *file, void *fh, struct v4l2_fmtdesc *fmt)
{
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)
{
struct video_device *dev = video_devdata(file);
struct qcam_device *qcam = (struct qcam_device *)dev;
return test_and_set_bit(0, &qcam->in_use) ? -EBUSY : 0;
}
static int qcam_exclusive_release(struct file *file)
{
struct video_device *dev = video_devdata(file);
struct qcam_device *qcam = (struct qcam_device *)dev;
clear_bit(0, &qcam->in_use);
return 0;
}
static const struct v4l2_file_operations qcam_fops = {
.owner = THIS_MODULE,
.open = qcam_exclusive_open,
.release = qcam_exclusive_release,
.ioctl = qcam_ioctl,
.ioctl = video_ioctl2,
.read = qcam_read,
};
static struct video_device qcam_template = {
.name = "Connectix Quickcam",
.fops = &qcam_fops,
.release = video_device_release_empty,
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,
};
#define MAX_CAMS 4
static struct qcam_device *qcams[MAX_CAMS];
static unsigned int num_cams;
/* 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 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));
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 qc_calibrate(struct qcam *q)
{
/*
* Bugfix by Hanno Mueller hmueller@kabel.de, Mai 21 96
* The white balance is an individual 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;
}
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);

69
drivers/media/video/bw-qcam.h
View File

@ -1,69 +0,0 @@
/*
* Video4Linux bw-qcam driver
*
* Derived from code..
*/
/******************************************************************
Copyright (C) 1996 by Scott Laird
Permission is hereby granted, free of charge, to any person obtaining
a copy of this software and associated documentation files (the
"Software"), to deal in the Software without restriction, including
without limitation the rights to use, copy, modify, merge, publish,
distribute, sublicense, and/or sell copies of the Software, and to
permit persons to whom the Software is furnished to do so, subject to
the following conditions:
The above copyright notice and this permission notice shall be
included in all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
IN NO EVENT SHALL SCOTT LAIRD BE LIABLE FOR ANY CLAIM, DAMAGES OR
OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
OTHER DEALINGS IN THE SOFTWARE.
******************************************************************/
/* 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_device {
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;
};