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path: root/drivers/media/video/c-qcam.c
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Diffstat (limited to 'drivers/media/video/c-qcam.c')
-rw-r--r--drivers/media/video/c-qcam.c634
1 files changed, 330 insertions, 304 deletions
diff --git a/drivers/media/video/c-qcam.c b/drivers/media/video/c-qcam.c
index 8f1dd88b32a..6e4b19698c1 100644
--- a/drivers/media/video/c-qcam.c
+++ b/drivers/media/video/c-qcam.c
@@ -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;
+ 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;
+}
- 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;
+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;
+}
- 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;
+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);
}
- case VIDIOCSTUNER:
- {
- struct video_tuner *v = arg;
-
- if (v->tuner)
- return -EINVAL;
- if (v->mode != VIDEO_MODE_AUTO)
- return -EINVAL;
- return 0;
+ 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;
}
- 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;
+ 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;
}
- 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);
+ if (ret == 0) {
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;
+ mutex_unlock(&qcam->lock);
+ return ret;
+}
- 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;
+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;
}
- case VIDIOCKEY:
- return 0;
- case VIDIOCCAPTURE:
- case VIDIOCGFBUF:
- case VIDIOCSFBUF:
- case VIDIOCGFREQ:
- case VIDIOCSFREQ:
- case VIDIOCGAUDIO:
- case VIDIOCSAUDIO:
- return -EINVAL;
+ 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:
- return -ENOIOCTLCMD;
+ 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 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,
+ "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,
+ v4l2_dev = &qcam->v4l2_dev;
+ strlcpy(v4l2_dev->name, "c-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, "c-qcam", NULL, NULL,
NULL, 0, NULL);
- q->bidirectional = (q->pport->modes & PARPORT_MODE_TRISTATE) ? 1 : 0;
+ qcam->bidirectional = (qcam->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 (qcam->pdev == NULL) {
+ v4l2_err(v4l2_dev, "couldn't register for %s.\n", port->name);
+ kfree(qcam);
return NULL;
}
- memcpy(&q->vdev, &qcam_template, sizeof(qcam_template));
-
- 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;
+ 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);
generated by cgit v1.2.3 (git 2.25.1) at 2024-04-26 04:09:32 +0000