V4L/DVB: c-qcam: convert to V4L2
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
Mauro Carvalho Chehab
parent
483d67ff0a
commit
d71964fb97
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@ -656,7 +656,7 @@ config VIDEO_BWQCAM
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config VIDEO_CQCAM
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tristate "QuickCam Colour Video For Linux (EXPERIMENTAL)"
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depends on EXPERIMENTAL && PARPORT && VIDEO_V4L1
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depends on EXPERIMENTAL && PARPORT && VIDEO_V4L2
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help
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This is the video4linux driver for the colour version of the
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Connectix QuickCam. If you have one of these cameras, say Y here,
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@ -33,15 +33,17 @@
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#include <linux/mm.h>
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#include <linux/parport.h>
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#include <linux/sched.h>
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#include <linux/videodev.h>
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#include <media/v4l2-common.h>
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#include <media/v4l2-ioctl.h>
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#include <linux/mutex.h>
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#include <linux/jiffies.h>
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#include <linux/version.h>
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#include <linux/videodev2.h>
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#include <asm/uaccess.h>
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#include <media/v4l2-device.h>
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#include <media/v4l2-common.h>
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#include <media/v4l2-ioctl.h>
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struct qcam_device {
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struct qcam {
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struct v4l2_device v4l2_dev;
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struct video_device vdev;
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struct pardevice *pdev;
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struct parport *pport;
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@ -51,7 +53,6 @@ struct qcam_device {
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int contrast, brightness, whitebal;
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int top, left;
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unsigned int bidirectional;
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unsigned long in_use;
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struct mutex lock;
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};
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@ -68,33 +69,45 @@ struct qcam_device {
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#define QC_DECIMATION_2 2
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#define QC_DECIMATION_4 4
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#define BANNER "Colour QuickCam for Video4Linux v0.05"
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#define BANNER "Colour QuickCam for Video4Linux v0.06"
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static int parport[MAX_CAMS] = { [1 ... MAX_CAMS-1] = -1 };
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static int probe = 2;
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static int force_rgb;
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static int video_nr = -1;
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static inline void qcam_set_ack(struct qcam_device *qcam, unsigned int i)
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/* FIXME: parport=auto would never have worked, surely? --RR */
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MODULE_PARM_DESC(parport, "parport=<auto|n[,n]...> for port detection method\n"
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"probe=<0|1|2> for camera detection method\n"
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"force_rgb=<0|1> for RGB data format (default BGR)");
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module_param_array(parport, int, NULL, 0);
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module_param(probe, int, 0);
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module_param(force_rgb, bool, 0);
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module_param(video_nr, int, 0);
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static struct qcam *qcams[MAX_CAMS];
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static unsigned int num_cams;
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static inline void qcam_set_ack(struct qcam *qcam, unsigned int i)
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{
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/* note: the QC specs refer to the PCAck pin by voltage, not
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software level. PC ports have builtin inverters. */
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parport_frob_control(qcam->pport, 8, i ? 8 : 0);
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}
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static inline unsigned int qcam_ready1(struct qcam_device *qcam)
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static inline unsigned int qcam_ready1(struct qcam *qcam)
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{
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return (parport_read_status(qcam->pport) & 0x8) ? 1 : 0;
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}
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static inline unsigned int qcam_ready2(struct qcam_device *qcam)
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static inline unsigned int qcam_ready2(struct qcam *qcam)
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{
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return (parport_read_data(qcam->pport) & 0x1) ? 1 : 0;
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}
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static unsigned int qcam_await_ready1(struct qcam_device *qcam,
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int value)
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static unsigned int qcam_await_ready1(struct qcam *qcam, int value)
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{
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struct v4l2_device *v4l2_dev = &qcam->v4l2_dev;
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unsigned long oldjiffies = jiffies;
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unsigned int i;
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@ -112,14 +125,15 @@ static unsigned int qcam_await_ready1(struct qcam_device *qcam,
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}
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/* Probably somebody pulled the plug out. Not much we can do. */
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printk(KERN_ERR "c-qcam: ready1 timeout (%d) %x %x\n", value,
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v4l2_err(v4l2_dev, "ready1 timeout (%d) %x %x\n", value,
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parport_read_status(qcam->pport),
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parport_read_control(qcam->pport));
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return 1;
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}
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static unsigned int qcam_await_ready2(struct qcam_device *qcam, int value)
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static unsigned int qcam_await_ready2(struct qcam *qcam, int value)
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{
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struct v4l2_device *v4l2_dev = &qcam->v4l2_dev;
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unsigned long oldjiffies = jiffies;
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unsigned int i;
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@ -137,14 +151,14 @@ static unsigned int qcam_await_ready2(struct qcam_device *qcam, int value)
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}
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/* Probably somebody pulled the plug out. Not much we can do. */
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printk(KERN_ERR "c-qcam: ready2 timeout (%d) %x %x %x\n", value,
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v4l2_err(v4l2_dev, "ready2 timeout (%d) %x %x %x\n", value,
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parport_read_status(qcam->pport),
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parport_read_control(qcam->pport),
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parport_read_data(qcam->pport));
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return 1;
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}
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static int qcam_read_data(struct qcam_device *qcam)
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static int qcam_read_data(struct qcam *qcam)
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{
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unsigned int idata;
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@ -159,21 +173,22 @@ static int qcam_read_data(struct qcam_device *qcam)
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return idata;
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}
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static int qcam_write_data(struct qcam_device *qcam, unsigned int data)
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static int qcam_write_data(struct qcam *qcam, unsigned int data)
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{
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struct v4l2_device *v4l2_dev = &qcam->v4l2_dev;
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unsigned int idata;
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parport_write_data(qcam->pport, data);
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idata = qcam_read_data(qcam);
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if (data != idata) {
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printk(KERN_WARNING "cqcam: sent %x but received %x\n", data,
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v4l2_warn(v4l2_dev, "sent %x but received %x\n", data,
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idata);
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return 1;
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}
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return 0;
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}
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static inline int qcam_set(struct qcam_device *qcam, unsigned int cmd, unsigned int data)
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static inline int qcam_set(struct qcam *qcam, unsigned int cmd, unsigned int data)
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{
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if (qcam_write_data(qcam, cmd))
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return -1;
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@ -182,14 +197,14 @@ static inline int qcam_set(struct qcam_device *qcam, unsigned int cmd, unsigned
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return 0;
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}
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static inline int qcam_get(struct qcam_device *qcam, unsigned int cmd)
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static inline int qcam_get(struct qcam *qcam, unsigned int cmd)
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{
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if (qcam_write_data(qcam, cmd))
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return -1;
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return qcam_read_data(qcam);
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}
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static int qc_detect(struct qcam_device *qcam)
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static int qc_detect(struct qcam *qcam)
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{
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unsigned int stat, ostat, i, count = 0;
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@ -246,7 +261,7 @@ static int qc_detect(struct qcam_device *qcam)
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return 0;
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}
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static void qc_reset(struct qcam_device *qcam)
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static void qc_reset(struct qcam *qcam)
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{
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parport_write_control(qcam->pport, 0xc);
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parport_write_control(qcam->pport, 0x8);
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@ -258,55 +273,55 @@ static void qc_reset(struct qcam_device *qcam)
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/* Reset the QuickCam and program for brightness, contrast,
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* white-balance, and resolution. */
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static void qc_setup(struct qcam_device *q)
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static void qc_setup(struct qcam *qcam)
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{
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qc_reset(q);
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qc_reset(qcam);
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/* Set the brightness. */
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qcam_set(q, 11, q->brightness);
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qcam_set(qcam, 11, qcam->brightness);
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/* Set the height and width. These refer to the actual
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CCD area *before* applying the selected decimation. */
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qcam_set(q, 17, q->ccd_height);
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qcam_set(q, 19, q->ccd_width / 2);
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qcam_set(qcam, 17, qcam->ccd_height);
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qcam_set(qcam, 19, qcam->ccd_width / 2);
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/* Set top and left. */
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qcam_set(q, 0xd, q->top);
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qcam_set(q, 0xf, q->left);
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qcam_set(qcam, 0xd, qcam->top);
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qcam_set(qcam, 0xf, qcam->left);
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/* Set contrast and white balance. */
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qcam_set(q, 0x19, q->contrast);
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qcam_set(q, 0x1f, q->whitebal);
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qcam_set(qcam, 0x19, qcam->contrast);
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qcam_set(qcam, 0x1f, qcam->whitebal);
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/* Set the speed. */
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qcam_set(q, 45, 2);
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qcam_set(qcam, 45, 2);
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}
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/* Read some bytes from the camera and put them in the buffer.
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nbytes should be a multiple of 3, because bidirectional mode gives
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us three bytes at a time. */
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static unsigned int qcam_read_bytes(struct qcam_device *q, unsigned char *buf, unsigned int nbytes)
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static unsigned int qcam_read_bytes(struct qcam *qcam, unsigned char *buf, unsigned int nbytes)
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{
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unsigned int bytes = 0;
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qcam_set_ack(q, 0);
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if (q->bidirectional) {
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qcam_set_ack(qcam, 0);
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if (qcam->bidirectional) {
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/* It's a bidirectional port */
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while (bytes < nbytes) {
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unsigned int lo1, hi1, lo2, hi2;
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unsigned char r, g, b;
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if (qcam_await_ready2(q, 1))
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if (qcam_await_ready2(qcam, 1))
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return bytes;
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lo1 = parport_read_data(q->pport) >> 1;
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hi1 = ((parport_read_status(q->pport) >> 3) & 0x1f) ^ 0x10;
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qcam_set_ack(q, 1);
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if (qcam_await_ready2(q, 0))
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lo1 = parport_read_data(qcam->pport) >> 1;
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hi1 = ((parport_read_status(qcam->pport) >> 3) & 0x1f) ^ 0x10;
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qcam_set_ack(qcam, 1);
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if (qcam_await_ready2(qcam, 0))
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return bytes;
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lo2 = parport_read_data(q->pport) >> 1;
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hi2 = ((parport_read_status(q->pport) >> 3) & 0x1f) ^ 0x10;
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qcam_set_ack(q, 0);
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lo2 = parport_read_data(qcam->pport) >> 1;
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hi2 = ((parport_read_status(qcam->pport) >> 3) & 0x1f) ^ 0x10;
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qcam_set_ack(qcam, 0);
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r = lo1 | ((hi1 & 1) << 7);
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g = ((hi1 & 0x1e) << 3) | ((hi2 & 0x1e) >> 1);
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b = lo2 | ((hi2 & 1) << 7);
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@ -328,14 +343,14 @@ static unsigned int qcam_read_bytes(struct qcam_device *q, unsigned char *buf, u
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while (bytes < nbytes) {
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unsigned int hi, lo;
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if (qcam_await_ready1(q, 1))
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if (qcam_await_ready1(qcam, 1))
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return bytes;
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hi = (parport_read_status(q->pport) & 0xf0);
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qcam_set_ack(q, 1);
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if (qcam_await_ready1(q, 0))
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hi = (parport_read_status(qcam->pport) & 0xf0);
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qcam_set_ack(qcam, 1);
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if (qcam_await_ready1(qcam, 0))
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return bytes;
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lo = (parport_read_status(q->pport) & 0xf0);
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qcam_set_ack(q, 0);
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lo = (parport_read_status(qcam->pport) & 0xf0);
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qcam_set_ack(qcam, 0);
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/* flip some bits */
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rgb[(i = bytes++ % 3)] = (hi | (lo >> 4)) ^ 0x88;
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if (i >= 2) {
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@ -361,10 +376,11 @@ get_fragment:
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#define BUFSZ 150
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static long qc_capture(struct qcam_device *q, char __user *buf, unsigned long len)
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static long qc_capture(struct qcam *qcam, char __user *buf, unsigned long len)
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{
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struct v4l2_device *v4l2_dev = &qcam->v4l2_dev;
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unsigned lines, pixelsperline, bitsperxfer;
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unsigned int is_bi_dir = q->bidirectional;
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unsigned int is_bi_dir = qcam->bidirectional;
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size_t wantlen, outptr = 0;
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char tmpbuf[BUFSZ];
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@ -373,10 +389,10 @@ static long qc_capture(struct qcam_device *q, char __user *buf, unsigned long le
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/* Wait for camera to become ready */
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for (;;) {
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int i = qcam_get(q, 41);
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int i = qcam_get(qcam, 41);
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if (i == -1) {
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qc_setup(q);
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qc_setup(qcam);
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return -EIO;
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}
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if ((i & 0x80) == 0)
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@ -384,25 +400,25 @@ static long qc_capture(struct qcam_device *q, char __user *buf, unsigned long le
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schedule();
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}
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if (qcam_set(q, 7, (q->mode | (is_bi_dir ? 1 : 0)) + 1))
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if (qcam_set(qcam, 7, (qcam->mode | (is_bi_dir ? 1 : 0)) + 1))
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return -EIO;
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lines = q->height;
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pixelsperline = q->width;
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lines = qcam->height;
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pixelsperline = qcam->width;
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bitsperxfer = (is_bi_dir) ? 24 : 8;
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if (is_bi_dir) {
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/* Turn the port around */
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parport_data_reverse(q->pport);
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parport_data_reverse(qcam->pport);
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mdelay(3);
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qcam_set_ack(q, 0);
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if (qcam_await_ready1(q, 1)) {
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qc_setup(q);
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qcam_set_ack(qcam, 0);
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if (qcam_await_ready1(qcam, 1)) {
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qc_setup(qcam);
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return -EIO;
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}
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qcam_set_ack(q, 1);
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if (qcam_await_ready1(q, 0)) {
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qc_setup(q);
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qcam_set_ack(qcam, 1);
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if (qcam_await_ready1(qcam, 0)) {
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qc_setup(qcam);
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return -EIO;
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}
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}
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@ -413,7 +429,7 @@ static long qc_capture(struct qcam_device *q, char __user *buf, unsigned long le
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size_t t, s;
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s = (wantlen > BUFSZ) ? BUFSZ : wantlen;
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t = qcam_read_bytes(q, tmpbuf, s);
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t = qcam_read_bytes(qcam, tmpbuf, s);
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if (outptr < len) {
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size_t sz = len - outptr;
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@ -432,10 +448,10 @@ static long qc_capture(struct qcam_device *q, char __user *buf, unsigned long le
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len = outptr;
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if (wantlen) {
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printk(KERN_ERR "qcam: short read.\n");
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v4l2_err(v4l2_dev, "short read.\n");
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if (is_bi_dir)
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parport_data_forward(q->pport);
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qc_setup(q);
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parport_data_forward(qcam->pport);
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qc_setup(qcam);
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return len;
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}
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@ -443,49 +459,49 @@ static long qc_capture(struct qcam_device *q, char __user *buf, unsigned long le
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int l;
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do {
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l = qcam_read_bytes(q, tmpbuf, 3);
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l = qcam_read_bytes(qcam, tmpbuf, 3);
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cond_resched();
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} while (l && (tmpbuf[0] == 0x7e || tmpbuf[1] == 0x7e || tmpbuf[2] == 0x7e));
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if (force_rgb) {
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if (tmpbuf[0] != 0xe || tmpbuf[1] != 0x0 || tmpbuf[2] != 0xf)
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printk(KERN_ERR "qcam: bad EOF\n");
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v4l2_err(v4l2_dev, "bad EOF\n");
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} else {
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if (tmpbuf[0] != 0xf || tmpbuf[1] != 0x0 || tmpbuf[2] != 0xe)
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printk(KERN_ERR "qcam: bad EOF\n");
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v4l2_err(v4l2_dev, "bad EOF\n");
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}
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qcam_set_ack(q, 0);
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if (qcam_await_ready1(q, 1)) {
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printk(KERN_ERR "qcam: no ack after EOF\n");
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parport_data_forward(q->pport);
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qc_setup(q);
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qcam_set_ack(qcam, 0);
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if (qcam_await_ready1(qcam, 1)) {
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v4l2_err(v4l2_dev, "no ack after EOF\n");
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parport_data_forward(qcam->pport);
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qc_setup(qcam);
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return len;
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}
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parport_data_forward(q->pport);
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parport_data_forward(qcam->pport);
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mdelay(3);
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qcam_set_ack(q, 1);
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if (qcam_await_ready1(q, 0)) {
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printk(KERN_ERR "qcam: no ack to port turnaround\n");
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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);
|
||||
|
|
|
|||
Loading…
Reference in New Issue