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V4L/DVB: c-qcam: convert to V4L2

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Note: due to lack of hardware this conversion is untested.
However, 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 03:55:25 -03:00 committed by Mauro Carvalho Chehab
parent 483d67ff0a
commit d71964fb97
2 changed files with 345 additions and 319 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
drivers/media/video/Kconfig
View File

@ -656,7 +656,7 @@ config VIDEO_BWQCAM
config VIDEO_CQCAM
tristate "QuickCam Colour Video For Linux (EXPERIMENTAL)"
depends on EXPERIMENTAL && PARPORT && VIDEO_V4L1
depends on EXPERIMENTAL && PARPORT && VIDEO_V4L2
help
This is the video4linux driver for the colour version of the
Connectix QuickCam. If you have one of these cameras, say Y here,

662
drivers/media/video/c-qcam.c
View File

@ -33,15 +33,17 @@
#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/mutex.h>
#include <linux/jiffies.h>
#include <linux/version.h>
#include <linux/videodev2.h>
#include <asm/uaccess.h>
#include <media/v4l2-device.h>
#include <media/v4l2-common.h>
#include <media/v4l2-ioctl.h>
struct qcam_device {
struct qcam {
struct v4l2_device v4l2_dev;
struct video_device vdev;
struct pardevice *pdev;
struct parport *pport;
@ -51,7 +53,6 @@ struct qcam_device {
int contrast, brightness, whitebal;
int top, left;
unsigned int bidirectional;
unsigned long in_use;
struct mutex lock;
};
@ -68,33 +69,45 @@ struct qcam_device {
#define QC_DECIMATION_2 2
#define QC_DECIMATION_4 4
#define BANNER "Colour QuickCam for Video4Linux v0.05"
#define BANNER "Colour QuickCam for Video4Linux v0.06"
static int parport[MAX_CAMS] = { [1 ... MAX_CAMS-1] = -1 };
static int probe = 2;
static int force_rgb;
static int video_nr = -1;
static inline void qcam_set_ack(struct qcam_device *qcam, unsigned int i)
/* FIXME: parport=auto would never have worked, surely? --RR */
MODULE_PARM_DESC(parport, "parport=<auto|n[,n]...> for port detection method\n"
"probe=<0|1|2> for camera detection method\n"
"force_rgb=<0|1> for RGB data format (default BGR)");
module_param_array(parport, int, NULL, 0);
module_param(probe, int, 0);
module_param(force_rgb, bool, 0);
module_param(video_nr, int, 0);
static struct qcam *qcams[MAX_CAMS];
static unsigned int num_cams;
static inline void qcam_set_ack(struct qcam *qcam, unsigned int i)
{
/* note: the QC specs refer to the PCAck pin by voltage, not
software level. PC ports have builtin inverters. */
parport_frob_control(qcam->pport, 8, i ? 8 : 0);
}
static inline unsigned int qcam_ready1(struct qcam_device *qcam)
static inline unsigned int qcam_ready1(struct qcam *qcam)
{
return (parport_read_status(qcam->pport) & 0x8) ? 1 : 0;
}
static inline unsigned int qcam_ready2(struct qcam_device *qcam)
static inline unsigned int qcam_ready2(struct qcam *qcam)
{
return (parport_read_data(qcam->pport) & 0x1) ? 1 : 0;
}
static unsigned int qcam_await_ready1(struct qcam_device *qcam,
int value)
static unsigned int qcam_await_ready1(struct qcam *qcam, int value)
{
struct v4l2_device *v4l2_dev = &qcam->v4l2_dev;
unsigned long oldjiffies = jiffies;
unsigned int i;
@ -112,14 +125,15 @@ static unsigned int qcam_await_ready1(struct qcam_device *qcam,
}
/* Probably somebody pulled the plug out. Not much we can do. */
printk(KERN_ERR "c-qcam: ready1 timeout (%d) %x %x\n", value,
v4l2_err(v4l2_dev, "ready1 timeout (%d) %x %x\n", value,
parport_read_status(qcam->pport),
parport_read_control(qcam->pport));
return 1;
}
static unsigned int qcam_await_ready2(struct qcam_device *qcam, int value)
static unsigned int qcam_await_ready2(struct qcam *qcam, int value)
{
struct v4l2_device *v4l2_dev = &qcam->v4l2_dev;
unsigned long oldjiffies = jiffies;
unsigned int i;
@ -137,14 +151,14 @@ static unsigned int qcam_await_ready2(struct qcam_device *qcam, int value)
}
/* Probably somebody pulled the plug out. Not much we can do. */
printk(KERN_ERR "c-qcam: ready2 timeout (%d) %x %x %x\n", value,
v4l2_err(v4l2_dev, "ready2 timeout (%d) %x %x %x\n", value,
parport_read_status(qcam->pport),
parport_read_control(qcam->pport),
parport_read_data(qcam->pport));
return 1;
}
static int qcam_read_data(struct qcam_device *qcam)
static int qcam_read_data(struct qcam *qcam)
{
unsigned int idata;
@ -159,21 +173,22 @@ static int qcam_read_data(struct qcam_device *qcam)
return idata;
}
static int qcam_write_data(struct qcam_device *qcam, unsigned int data)
static int qcam_write_data(struct qcam *qcam, unsigned int data)
{
struct v4l2_device *v4l2_dev = &qcam->v4l2_dev;
unsigned int idata;
parport_write_data(qcam->pport, data);
idata = qcam_read_data(qcam);
if (data != idata) {
printk(KERN_WARNING "cqcam: sent %x but received %x\n", data,
v4l2_warn(v4l2_dev, "sent %x but received %x\n", data,
idata);
return 1;
}
return 0;
}
static inline int qcam_set(struct qcam_device *qcam, unsigned int cmd, unsigned int data)
static inline int qcam_set(struct qcam *qcam, unsigned int cmd, unsigned int data)
{
if (qcam_write_data(qcam, cmd))
return -1;
@ -182,14 +197,14 @@ static inline int qcam_set(struct qcam_device *qcam, unsigned int cmd, unsigned
return 0;
}
static inline int qcam_get(struct qcam_device *qcam, unsigned int cmd)
static inline int qcam_get(struct qcam *qcam, unsigned int cmd)
{
if (qcam_write_data(qcam, cmd))
return -1;
return qcam_read_data(qcam);
}
static int qc_detect(struct qcam_device *qcam)
static int qc_detect(struct qcam *qcam)
{
unsigned int stat, ostat, i, count = 0;
@ -246,7 +261,7 @@ static int qc_detect(struct qcam_device *qcam)
return 0;
}
static void qc_reset(struct qcam_device *qcam)
static void qc_reset(struct qcam *qcam)
{
parport_write_control(qcam->pport, 0xc);
parport_write_control(qcam->pport, 0x8);
@ -258,55 +273,55 @@ static void qc_reset(struct qcam_device *qcam)
/* Reset the QuickCam and program for brightness, contrast,
* white-balance, and resolution. */
static void qc_setup(struct qcam_device *q)
static void qc_setup(struct qcam *qcam)
{
qc_reset(q);
qc_reset(qcam);
/* Set the brightness. */
qcam_set(q, 11, q->brightness);
qcam_set(qcam, 11, qcam->brightness);
/* Set the height and width. These refer to the actual
CCD area *before* applying the selected decimation. */
qcam_set(q, 17, q->ccd_height);
qcam_set(q, 19, q->ccd_width / 2);
qcam_set(qcam, 17, qcam->ccd_height);
qcam_set(qcam, 19, qcam->ccd_width / 2);
/* Set top and left. */
qcam_set(q, 0xd, q->top);
qcam_set(q, 0xf, q->left);
qcam_set(qcam, 0xd, qcam->top);
qcam_set(qcam, 0xf, qcam->left);
/* Set contrast and white balance. */
qcam_set(q, 0x19, q->contrast);
qcam_set(q, 0x1f, q->whitebal);
qcam_set(qcam, 0x19, qcam->contrast);
qcam_set(qcam, 0x1f, qcam->whitebal);
/* Set the speed. */
qcam_set(q, 45, 2);
qcam_set(qcam, 45, 2);
}
/* Read some bytes from the camera and put them in the buffer.
nbytes should be a multiple of 3, because bidirectional mode gives
us three bytes at a time. */
static unsigned int qcam_read_bytes(struct qcam_device *q, unsigned char *buf, unsigned int nbytes)
static unsigned int qcam_read_bytes(struct qcam *qcam, unsigned char *buf, unsigned int nbytes)
{
unsigned int bytes = 0;
qcam_set_ack(q, 0);
if (q->bidirectional) {
qcam_set_ack(qcam, 0);
if (qcam->bidirectional) {
/* It's a bidirectional port */
while (bytes < nbytes) {
unsigned int lo1, hi1, lo2, hi2;
unsigned char r, g, b;
if (qcam_await_ready2(q, 1))
if (qcam_await_ready2(qcam, 1))
return bytes;
lo1 = parport_read_data(q->pport) >> 1;
hi1 = ((parport_read_status(q->pport) >> 3) & 0x1f) ^ 0x10;
qcam_set_ack(q, 1);
if (qcam_await_ready2(q, 0))
lo1 = parport_read_data(qcam->pport) >> 1;
hi1 = ((parport_read_status(qcam->pport) >> 3) & 0x1f) ^ 0x10;
qcam_set_ack(qcam, 1);
if (qcam_await_ready2(qcam, 0))
return bytes;
lo2 = parport_read_data(q->pport) >> 1;
hi2 = ((parport_read_status(q->pport) >> 3) & 0x1f) ^ 0x10;
qcam_set_ack(q, 0);
lo2 = parport_read_data(qcam->pport) >> 1;
hi2 = ((parport_read_status(qcam->pport) >> 3) & 0x1f) ^ 0x10;
qcam_set_ack(qcam, 0);
r = lo1 | ((hi1 & 1) << 7);
g = ((hi1 & 0x1e) << 3) | ((hi2 & 0x1e) >> 1);
b = lo2 | ((hi2 & 1) << 7);
@ -328,14 +343,14 @@ static unsigned int qcam_read_bytes(struct qcam_device *q, unsigned char *buf, u
while (bytes < nbytes) {
unsigned int hi, lo;
if (qcam_await_ready1(q, 1))
if (qcam_await_ready1(qcam, 1))
return bytes;
hi = (parport_read_status(q->pport) & 0xf0);
qcam_set_ack(q, 1);
if (qcam_await_ready1(q, 0))
hi = (parport_read_status(qcam->pport) & 0xf0);
qcam_set_ack(qcam, 1);
if (qcam_await_ready1(qcam, 0))
return bytes;
lo = (parport_read_status(q->pport) & 0xf0);
qcam_set_ack(q, 0);
lo = (parport_read_status(qcam->pport) & 0xf0);
qcam_set_ack(qcam, 0);
/* flip some bits */
rgb[(i = bytes++ % 3)] = (hi | (lo >> 4)) ^ 0x88;
if (i >= 2) {
@ -361,10 +376,11 @@ get_fragment:
#define BUFSZ 150
static long qc_capture(struct qcam_device *q, char __user *buf, unsigned long len)
static long qc_capture(struct qcam *qcam, char __user *buf, unsigned long len)
{
struct v4l2_device *v4l2_dev = &qcam->v4l2_dev;
unsigned lines, pixelsperline, bitsperxfer;
unsigned int is_bi_dir = q->bidirectional;
unsigned int is_bi_dir = qcam->bidirectional;
size_t wantlen, outptr = 0;
char tmpbuf[BUFSZ];
@ -373,10 +389,10 @@ static long qc_capture(struct qcam_device *q, char __user *buf, unsigned long le
/* Wait for camera to become ready */
for (;;) {
int i = qcam_get(q, 41);
int i = qcam_get(qcam, 41);
if (i == -1) {
qc_setup(q);
qc_setup(qcam);
return -EIO;
}
if ((i & 0x80) == 0)
@ -384,25 +400,25 @@ static long qc_capture(struct qcam_device *q, char __user *buf, unsigned long le
schedule();
}
if (qcam_set(q, 7, (q->mode | (is_bi_dir ? 1 : 0)) + 1))
if (qcam_set(qcam, 7, (qcam->mode | (is_bi_dir ? 1 : 0)) + 1))
return -EIO;
lines = q->height;
pixelsperline = q->width;
lines = qcam->height;
pixelsperline = qcam->width;
bitsperxfer = (is_bi_dir) ? 24 : 8;
if (is_bi_dir) {
/* Turn the port around */
parport_data_reverse(q->pport);
parport_data_reverse(qcam->pport);
mdelay(3);
qcam_set_ack(q, 0);
if (qcam_await_ready1(q, 1)) {
qc_setup(q);
qcam_set_ack(qcam, 0);
if (qcam_await_ready1(qcam, 1)) {
qc_setup(qcam);
return -EIO;
}
qcam_set_ack(q, 1);
if (qcam_await_ready1(q, 0)) {
qc_setup(q);
qcam_set_ack(qcam, 1);
if (qcam_await_ready1(qcam, 0)) {
qc_setup(qcam);
return -EIO;
}
}
@ -413,7 +429,7 @@ static long qc_capture(struct qcam_device *q, char __user *buf, unsigned long le
size_t t, s;
s = (wantlen > BUFSZ) ? BUFSZ : wantlen;
t = qcam_read_bytes(q, tmpbuf, s);
t = qcam_read_bytes(qcam, tmpbuf, s);
if (outptr < len) {
size_t sz = len - outptr;
@ -432,10 +448,10 @@ static long qc_capture(struct qcam_device *q, char __user *buf, unsigned long le
len = outptr;
if (wantlen) {
printk(KERN_ERR "qcam: short read.\n");
v4l2_err(v4l2_dev, "short read.\n");
if (is_bi_dir)
parport_data_forward(q->pport);
qc_setup(q);
parport_data_forward(qcam->pport);
qc_setup(qcam);
return len;
}
@ -443,49 +459,49 @@ static long qc_capture(struct qcam_device *q, char __user *buf, unsigned long le
int l;
do {
l = qcam_read_bytes(q, tmpbuf, 3);
l = qcam_read_bytes(qcam, tmpbuf, 3);
cond_resched();
} while (l && (tmpbuf[0] == 0x7e || tmpbuf[1] == 0x7e || tmpbuf[2] == 0x7e));
if (force_rgb) {
if (tmpbuf[0] != 0xe || tmpbuf[1] != 0x0 || tmpbuf[2] != 0xf)
printk(KERN_ERR "qcam: bad EOF\n");
v4l2_err(v4l2_dev, "bad EOF\n");
} else {
if (tmpbuf[0] != 0xf || tmpbuf[1] != 0x0 || tmpbuf[2] != 0xe)
printk(KERN_ERR "qcam: bad EOF\n");
v4l2_err(v4l2_dev, "bad EOF\n");
}
qcam_set_ack(q, 0);
if (qcam_await_ready1(q, 1)) {
printk(KERN_ERR "qcam: no ack after EOF\n");
parport_data_forward(q->pport);
qc_setup(q);
qcam_set_ack(qcam, 0);
if (qcam_await_ready1(qcam, 1)) {
v4l2_err(v4l2_dev, "no ack after EOF\n");
parport_data_forward(qcam->pport);
qc_setup(qcam);
return len;
}
parport_data_forward(q->pport);
parport_data_forward(qcam->pport);
mdelay(3);
qcam_set_ack(q, 1);
if (qcam_await_ready1(q, 0)) {
printk(KERN_ERR "qcam: no ack to port turnaround\n");
qc_setup(q);
qcam_set_ack(qcam, 1);
if (qcam_await_ready1(qcam, 0)) {
v4l2_err(v4l2_dev, "no ack to port turnaround\n");
qc_setup(qcam);
return len;
}
} else {
int l;
do {
l = qcam_read_bytes(q, tmpbuf, 1);
l = qcam_read_bytes(qcam, tmpbuf, 1);
cond_resched();
} while (l && tmpbuf[0] == 0x7e);
l = qcam_read_bytes(q, tmpbuf + 1, 2);
l = qcam_read_bytes(qcam, tmpbuf + 1, 2);
if (force_rgb) {
if (tmpbuf[0] != 0xe || tmpbuf[1] != 0x0 || tmpbuf[2] != 0xf)
printk(KERN_ERR "qcam: bad EOF\n");
v4l2_err(v4l2_dev, "bad EOF\n");
} else {
if (tmpbuf[0] != 0xf || tmpbuf[1] != 0x0 || tmpbuf[2] != 0xe)
printk(KERN_ERR "qcam: bad EOF\n");
v4l2_err(v4l2_dev, "bad EOF\n");
}
}
qcam_write_data(q, 0);
qcam_write_data(qcam, 0);
return len;
}
@ -493,184 +509,202 @@ 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;
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;
memset(v, 0, sizeof(*v));
strcpy(v->name, "Format");
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 = 24;
p->palette = VIDEO_PALETTE_RGB24;
return 0;
}
case VIDIOCSPICT:
{
struct video_picture *p = arg;
/*
* Sanity check args
*/
if (p->depth != 24 || p->palette != VIDEO_PALETTE_RGB24)
return -EINVAL;
/*
* Now load the camera.
*/
qcam->brightness = p->brightness >> 8;
qcam->contrast = p->contrast >> 8;
qcam->whitebal = p->whiteness >> 8;
mutex_lock(&qcam->lock);
parport_claim_or_block(qcam->pdev);
qc_setup(qcam);
parport_release(qcam->pdev);
mutex_unlock(&qcam->lock);
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 = 80;
qcam->height = 60;
qcam->mode = QC_DECIMATION_4;
if (vw->width >= 160 && vw->height >= 120) {
qcam->width = 160;
qcam->height = 120;
qcam->mode = QC_DECIMATION_2;
}
if (vw->width >= 320 && vw->height >= 240) {
qcam->width = 320;
qcam->height = 240;
qcam->mode = QC_DECIMATION_1;
}
qcam->mode |= QC_MILLIONS;
#if 0
if (vw->width >= 640 && vw->height >= 480) {
qcam->width = 640;
qcam->height = 480;
qcam->mode = QC_BILLIONS | QC_DECIMATION_1;
}
#endif
/* Ok we figured out what to use from our
wide choice */
mutex_lock(&qcam->lock);
parport_claim_or_block(qcam->pdev);
qc_setup(qcam);
parport_release(qcam->pdev);
mutex_unlock(&qcam->lock);
return 0;
}
case VIDIOCGWIN:
{
struct video_window *vw = arg;
memset(vw, 0, sizeof(*vw));
vw->width = qcam->width;
vw->height = qcam->height;
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, "Color Quickcam", sizeof(vcap->card));
strlcpy(vcap->bus_info, "parport", sizeof(vcap->bus_info));
vcap->version = KERNEL_VERSION(0, 0, 3);
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, 240);
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, 128);
}
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) {
parport_claim_or_block(qcam->pdev);
qc_setup(qcam);
parport_release(qcam->pdev);
}
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;
pix->height = qcam->height;
pix->pixelformat = V4L2_PIX_FMT_RGB24;
pix->field = V4L2_FIELD_NONE;
pix->bytesperline = 3 * qcam->width;
pix->sizeimage = 3 * 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;
}
pix->pixelformat = V4L2_PIX_FMT_RGB24;
pix->field = V4L2_FIELD_NONE;
pix->bytesperline = 3 * pix->width;
pix->sizeimage = 3 * 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;
switch (pix->height) {
case 60:
qcam->mode = QC_DECIMATION_4;
break;
case 120:
qcam->mode = QC_DECIMATION_2;
break;
default:
qcam->mode = QC_DECIMATION_1;
break;
}
mutex_lock(&qcam->lock);
qcam->mode |= QC_MILLIONS;
qcam->height = pix->height;
qcam->width = pix->width;
parport_claim_or_block(qcam->pdev);
qc_setup(qcam);
parport_release(qcam->pdev);
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,
"RGB 8:8:8", V4L2_PIX_FMT_RGB24,
{ 0, 0, 0, 0 }
},
};
enum v4l2_buf_type type = fmt->type;
if (fmt->index > 0)
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;
mutex_lock(&qcam->lock);
@ -682,81 +716,80 @@ 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;
}
/* video device template */
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 = "Colour 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,
};
/* Initialize the QuickCam driver control structure. */
static struct qcam_device *qcam_init(struct parport *port)
static struct qcam *qcam_init(struct parport *port)
{
struct qcam_device *q;
struct qcam *qcam;
struct v4l2_device *v4l2_dev;
q = kmalloc(sizeof(struct qcam_device), GFP_KERNEL);
if (q == NULL)
qcam = kzalloc(sizeof(*qcam), GFP_KERNEL);
if (qcam == NULL)
return NULL;
q->pport = port;
q->pdev = parport_register_device(port, "c-qcam", NULL, NULL,
NULL, 0, NULL);
v4l2_dev = &qcam->v4l2_dev;
strlcpy(v4l2_dev->name, "c-qcam", sizeof(v4l2_dev->name));
q->bidirectional = (q->pport->modes & PARPORT_MODE_TRISTATE) ? 1 : 0;
if (q->pdev == NULL) {
printk(KERN_ERR "c-qcam: couldn't register for %s.\n",
port->name);
kfree(q);
if (v4l2_device_register(NULL, v4l2_dev) < 0) {
v4l2_err(v4l2_dev, "Could not register v4l2_device\n");
return NULL;
}
memcpy(&q->vdev, &qcam_template, sizeof(qcam_template));
qcam->pport = port;
qcam->pdev = parport_register_device(port, "c-qcam", NULL, NULL,
NULL, 0, NULL);
mutex_init(&q->lock);
q->width = q->ccd_width = 320;
q->height = q->ccd_height = 240;
q->mode = QC_MILLIONS | QC_DECIMATION_1;
q->contrast = 192;
q->brightness = 240;
q->whitebal = 128;
q->top = 1;
q->left = 14;
return q;
qcam->bidirectional = (qcam->pport->modes & PARPORT_MODE_TRISTATE) ? 1 : 0;
if (qcam->pdev == NULL) {
v4l2_err(v4l2_dev, "couldn't register for %s.\n", port->name);
kfree(qcam);
return NULL;
}
strlcpy(qcam->vdev.name, "Colour 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->width = qcam->ccd_width = 320;
qcam->height = qcam->ccd_height = 240;
qcam->mode = QC_MILLIONS | QC_DECIMATION_1;
qcam->contrast = 192;
qcam->brightness = 240;
qcam->whitebal = 128;
qcam->top = 1;
qcam->left = 14;
return qcam;
}
static struct qcam_device *qcams[MAX_CAMS];
static unsigned int num_cams;
static int init_cqcam(struct parport *port)
{
struct qcam_device *qcam;
struct qcam *qcam;
struct v4l2_device *v4l2_dev;
if (parport[0] != -1) {
/* The user gave specific instructions */
@ -777,6 +810,8 @@ static int init_cqcam(struct parport *port)
if (qcam == NULL)
return -ENODEV;
v4l2_dev = &qcam->v4l2_dev;
parport_claim_or_block(qcam->pdev);
qc_reset(qcam);
@ -793,14 +828,14 @@ static int init_cqcam(struct parport *port)
parport_release(qcam->pdev);
if (video_register_device(&qcam->vdev, VFL_TYPE_GRABBER, video_nr) < 0) {
printk(KERN_ERR "Unable to register Colour QuickCam on %s\n",
v4l2_err(v4l2_dev, "Unable to register Colour QuickCam on %s\n",
qcam->pport->name);
parport_unregister_device(qcam->pdev);
kfree(qcam);
return -ENODEV;
}
printk(KERN_INFO "%s: Colour QuickCam found on %s\n",
v4l2_info(v4l2_dev, "%s: Colour QuickCam found on %s\n",
video_device_node_name(&qcam->vdev), qcam->pport->name);
qcams[num_cams++] = qcam;
@ -808,7 +843,7 @@ static int init_cqcam(struct parport *port)
return 0;
}
static void close_cqcam(struct qcam_device *qcam)
static void close_cqcam(struct qcam *qcam)
{
video_unregister_device(&qcam->vdev);
parport_unregister_device(qcam->pdev);
@ -833,7 +868,7 @@ static struct parport_driver cqcam_driver = {
static int __init cqcam_init(void)
{
printk(BANNER "\n");
printk(KERN_INFO BANNER "\n");
return parport_register_driver(&cqcam_driver);
}
@ -852,14 +887,5 @@ MODULE_AUTHOR("Philip Blundell <philb@gnu.org>");
MODULE_DESCRIPTION(BANNER);
MODULE_LICENSE("GPL");
/* FIXME: parport=auto would never have worked, surely? --RR */
MODULE_PARM_DESC(parport, "parport=<auto|n[,n]...> for port detection method\n"
"probe=<0|1|2> for camera detection method\n"
"force_rgb=<0|1> for RGB data format (default BGR)");
module_param_array(parport, int, NULL, 0);
module_param(probe, int, 0);
module_param(force_rgb, bool, 0);
module_param(video_nr, int, 0);
module_init(cqcam_init);
module_exit(cqcam_cleanup);