V4L/DVB: bw-qcam: convert to V4L2
Note: due to lack of hardware I was not able to test this conversion. But it is pretty straightforward, so I do not expect any problems. Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
This commit is contained in:
Hans Verkuil
Mauro Carvalho Chehab
parent
67a3e12b05
commit
483d67ff0a
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@ -646,7 +646,7 @@ config VIDEO_PMS
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config VIDEO_BWQCAM
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tristate "Quickcam BW Video For Linux"
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depends on PARPORT && VIDEO_V4L1
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depends on PARPORT && VIDEO_V4L2
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help
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Say Y have if you the black and white version of the QuickCam
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camera. See the next option for the color version.
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@ -66,19 +66,58 @@ OTHER DEALINGS IN THE SOFTWARE.
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#include <linux/delay.h>
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#include <linux/errno.h>
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#include <linux/fs.h>
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#include <linux/init.h>
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#include <linux/kernel.h>
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#include <linux/slab.h>
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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/version.h>
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#include <linux/videodev2.h>
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#include <linux/mutex.h>
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#include <asm/uaccess.h>
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#include <media/v4l2-common.h>
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#include <media/v4l2-ioctl.h>
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#include <media/v4l2-device.h>
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#include "bw-qcam.h"
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/* One from column A... */
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#define QC_NOTSET 0
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#define QC_UNIDIR 1
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#define QC_BIDIR 2
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#define QC_SERIAL 3
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/* ... and one from column B */
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#define QC_ANY 0x00
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#define QC_FORCE_UNIDIR 0x10
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#define QC_FORCE_BIDIR 0x20
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#define QC_FORCE_SERIAL 0x30
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/* in the port_mode member */
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#define QC_MODE_MASK 0x07
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#define QC_FORCE_MASK 0x70
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#define MAX_HEIGHT 243
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#define MAX_WIDTH 336
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/* Bit fields for status flags */
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#define QC_PARAM_CHANGE 0x01 /* Camera status change has occurred */
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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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struct mutex lock;
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int width, height;
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int bpp;
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int mode;
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int contrast, brightness, whitebal;
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int port_mode;
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int transfer_scale;
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int top, left;
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int status;
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unsigned int saved_bits;
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unsigned long in_use;
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};
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static unsigned int maxpoll = 250; /* Maximum busy-loop count for qcam I/O */
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static unsigned int yieldlines = 4; /* Yield after this many during capture */
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@ -93,22 +132,26 @@ module_param(video_nr, int, 0);
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* immediately attempt to initialize qcam */
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module_param(force_init, int, 0);
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static inline int read_lpstatus(struct qcam_device *q)
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#define MAX_CAMS 4
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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 int read_lpstatus(struct qcam *q)
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{
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return parport_read_status(q->pport);
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}
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static inline int read_lpdata(struct qcam_device *q)
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static inline int read_lpdata(struct qcam *q)
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{
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return parport_read_data(q->pport);
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}
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static inline void write_lpdata(struct qcam_device *q, int d)
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static inline void write_lpdata(struct qcam *q, int d)
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{
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parport_write_data(q->pport, d);
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}
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static inline void write_lpcontrol(struct qcam_device *q, int d)
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static void write_lpcontrol(struct qcam *q, int d)
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{
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if (d & 0x20) {
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/* Set bidirectional mode to reverse (data in) */
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@ -124,126 +167,11 @@ static inline void write_lpcontrol(struct qcam_device *q, int d)
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parport_write_control(q->pport, d);
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}
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static int qc_waithand(struct qcam_device *q, int val);
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static int qc_command(struct qcam_device *q, int command);
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static int qc_readparam(struct qcam_device *q);
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static int qc_setscanmode(struct qcam_device *q);
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static int qc_readbytes(struct qcam_device *q, char buffer[]);
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static struct video_device qcam_template;
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static int qc_calibrate(struct qcam_device *q)
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{
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/*
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* Bugfix by Hanno Mueller hmueller@kabel.de, Mai 21 96
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* The white balance is an individiual value for each
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* quickcam.
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*/
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int value;
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int count = 0;
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qc_command(q, 27); /* AutoAdjustOffset */
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qc_command(q, 0); /* Dummy Parameter, ignored by the camera */
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/* GetOffset (33) will read 255 until autocalibration */
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/* is finished. After that, a value of 1-254 will be */
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/* returned. */
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do {
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qc_command(q, 33);
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value = qc_readparam(q);
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mdelay(1);
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schedule();
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count++;
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} while (value == 0xff && count < 2048);
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q->whitebal = value;
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return value;
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}
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/* Initialize the QuickCam driver control structure. This is where
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* defaults are set for people who don't have a config file.*/
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static struct qcam_device *qcam_init(struct parport *port)
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{
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struct qcam_device *q;
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q = kmalloc(sizeof(struct qcam_device), GFP_KERNEL);
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if (q == NULL)
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return NULL;
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q->pport = port;
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q->pdev = parport_register_device(port, "bw-qcam", NULL, NULL,
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NULL, 0, NULL);
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if (q->pdev == NULL) {
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printk(KERN_ERR "bw-qcam: couldn't register for %s.\n",
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port->name);
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kfree(q);
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return NULL;
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}
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memcpy(&q->vdev, &qcam_template, sizeof(qcam_template));
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mutex_init(&q->lock);
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q->port_mode = (QC_ANY | QC_NOTSET);
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q->width = 320;
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q->height = 240;
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q->bpp = 4;
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q->transfer_scale = 2;
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q->contrast = 192;
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q->brightness = 180;
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q->whitebal = 105;
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q->top = 1;
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q->left = 14;
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q->mode = -1;
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q->status = QC_PARAM_CHANGE;
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return q;
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}
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/* qc_command is probably a bit of a misnomer -- it's used to send
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* bytes *to* the camera. Generally, these bytes are either commands
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* or arguments to commands, so the name fits, but it still bugs me a
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* bit. See the documentation for a list of commands. */
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static int qc_command(struct qcam_device *q, int command)
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{
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int n1, n2;
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int cmd;
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write_lpdata(q, command);
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write_lpcontrol(q, 6);
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n1 = qc_waithand(q, 1);
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write_lpcontrol(q, 0xe);
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n2 = qc_waithand(q, 0);
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cmd = (n1 & 0xf0) | ((n2 & 0xf0) >> 4);
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return cmd;
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}
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static int qc_readparam(struct qcam_device *q)
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{
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int n1, n2;
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int cmd;
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write_lpcontrol(q, 6);
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n1 = qc_waithand(q, 1);
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write_lpcontrol(q, 0xe);
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n2 = qc_waithand(q, 0);
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cmd = (n1 & 0xf0) | ((n2 & 0xf0) >> 4);
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return cmd;
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}
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/* qc_waithand busy-waits for a handshake signal from the QuickCam.
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* Almost all communication with the camera requires handshaking. */
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static int qc_waithand(struct qcam_device *q, int val)
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static int qc_waithand(struct qcam *q, int val)
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{
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int status;
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int runs = 0;
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@ -286,7 +214,7 @@ static int qc_waithand(struct qcam_device *q, int val)
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* (bit 3 of status register). It also returns the last value read,
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* since this data is useful. */
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static unsigned int qc_waithand2(struct qcam_device *q, int val)
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static unsigned int qc_waithand2(struct qcam *q, int val)
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{
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unsigned int status;
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int runs = 0;
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@ -309,6 +237,43 @@ static unsigned int qc_waithand2(struct qcam_device *q, int val)
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return status;
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}
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/* qc_command is probably a bit of a misnomer -- it's used to send
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* bytes *to* the camera. Generally, these bytes are either commands
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* or arguments to commands, so the name fits, but it still bugs me a
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* bit. See the documentation for a list of commands. */
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static int qc_command(struct qcam *q, int command)
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{
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int n1, n2;
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int cmd;
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write_lpdata(q, command);
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write_lpcontrol(q, 6);
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n1 = qc_waithand(q, 1);
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write_lpcontrol(q, 0xe);
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n2 = qc_waithand(q, 0);
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cmd = (n1 & 0xf0) | ((n2 & 0xf0) >> 4);
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return cmd;
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}
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static int qc_readparam(struct qcam *q)
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{
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int n1, n2;
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int cmd;
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write_lpcontrol(q, 6);
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n1 = qc_waithand(q, 1);
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write_lpcontrol(q, 0xe);
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n2 = qc_waithand(q, 0);
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cmd = (n1 & 0xf0) | ((n2 & 0xf0) >> 4);
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return cmd;
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}
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/* Try to detect a QuickCam. It appears to flash the upper 4 bits of
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the status register at 5-10 Hz. This is only used in the autoprobe
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@ -317,7 +282,7 @@ static unsigned int qc_waithand2(struct qcam_device *q, int val)
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almost completely safe, while their method screws up my printer if
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I plug it in before the camera. */
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static int qc_detect(struct qcam_device *q)
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static int qc_detect(struct qcam *q)
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{
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int reg, lastreg;
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int count = 0;
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@ -358,41 +323,6 @@ static int qc_detect(struct qcam_device *q)
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}
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}
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/* Reset the QuickCam. This uses the same sequence the Windows
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* QuickPic program uses. Someone with a bi-directional port should
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* check that bi-directional mode is detected right, and then
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* implement bi-directional mode in qc_readbyte(). */
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static void qc_reset(struct qcam_device *q)
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{
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switch (q->port_mode & QC_FORCE_MASK) {
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case QC_FORCE_UNIDIR:
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q->port_mode = (q->port_mode & ~QC_MODE_MASK) | QC_UNIDIR;
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break;
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case QC_FORCE_BIDIR:
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q->port_mode = (q->port_mode & ~QC_MODE_MASK) | QC_BIDIR;
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break;
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case QC_ANY:
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write_lpcontrol(q, 0x20);
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write_lpdata(q, 0x75);
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if (read_lpdata(q) != 0x75)
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q->port_mode = (q->port_mode & ~QC_MODE_MASK) | QC_BIDIR;
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else
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q->port_mode = (q->port_mode & ~QC_MODE_MASK) | QC_UNIDIR;
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break;
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}
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write_lpcontrol(q, 0xb);
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udelay(250);
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write_lpcontrol(q, 0xe);
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qc_setscanmode(q); /* in case port_mode changed */
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}
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/* Decide which scan mode to use. There's no real requirement that
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* the scanmode match the resolution in q->height and q-> width -- the
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* camera takes the picture at the resolution specified in the
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@ -402,7 +332,7 @@ static void qc_reset(struct qcam_device *q)
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* returned. If the scan is smaller, then the rest of the image
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* returned contains garbage. */
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static int qc_setscanmode(struct qcam_device *q)
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static int qc_setscanmode(struct qcam *q)
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{
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int old_mode = q->mode;
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@ -442,10 +372,45 @@ static int qc_setscanmode(struct qcam_device *q)
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}
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/* Reset the QuickCam. This uses the same sequence the Windows
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* QuickPic program uses. Someone with a bi-directional port should
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* check that bi-directional mode is detected right, and then
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* implement bi-directional mode in qc_readbyte(). */
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static void qc_reset(struct qcam *q)
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{
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switch (q->port_mode & QC_FORCE_MASK) {
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case QC_FORCE_UNIDIR:
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q->port_mode = (q->port_mode & ~QC_MODE_MASK) | QC_UNIDIR;
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break;
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case QC_FORCE_BIDIR:
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q->port_mode = (q->port_mode & ~QC_MODE_MASK) | QC_BIDIR;
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break;
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case QC_ANY:
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write_lpcontrol(q, 0x20);
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write_lpdata(q, 0x75);
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if (read_lpdata(q) != 0x75)
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q->port_mode = (q->port_mode & ~QC_MODE_MASK) | QC_BIDIR;
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else
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q->port_mode = (q->port_mode & ~QC_MODE_MASK) | QC_UNIDIR;
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break;
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}
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write_lpcontrol(q, 0xb);
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udelay(250);
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write_lpcontrol(q, 0xe);
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qc_setscanmode(q); /* in case port_mode changed */
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}
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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_set(struct qcam_device *q)
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static void qc_set(struct qcam *q)
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{
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int val;
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int val2;
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@ -499,7 +464,7 @@ static void qc_set(struct qcam_device *q)
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the supplied buffer. It returns the number of bytes read,
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or -1 on error. */
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static inline int qc_readbytes(struct qcam_device *q, char buffer[])
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static inline int qc_readbytes(struct qcam *q, char buffer[])
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{
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int ret = 1;
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unsigned int hi, lo;
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@ -590,7 +555,7 @@ static inline int qc_readbytes(struct qcam_device *q, char buffer[])
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* n=2^(bit depth)-1. Ask me for more details if you don't understand
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* this. */
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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 *q, char __user *buf, unsigned long len)
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{
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int i, j, k, yield;
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int bytes;
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@ -674,171 +639,206 @@ static long qc_capture(struct qcam_device *q, char __user *buf, unsigned long le
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* Video4linux interfacing
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*/
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static long qcam_do_ioctl(struct file *file, unsigned int cmd, void *arg)
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static int qcam_querycap(struct file *file, void *priv,
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struct v4l2_capability *vcap)
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{
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struct video_device *dev = video_devdata(file);
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struct qcam_device *qcam = (struct qcam_device *)dev;
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struct qcam *qcam = video_drvdata(file);
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switch (cmd) {
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case VIDIOCGCAP:
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{
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struct video_capability *b = arg;
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strcpy(b->name, "Quickcam");
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b->type = VID_TYPE_CAPTURE|VID_TYPE_SCALES|VID_TYPE_MONOCHROME;
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b->channels = 1;
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b->audios = 0;
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b->maxwidth = 320;
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b->maxheight = 240;
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b->minwidth = 80;
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b->minheight = 60;
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return 0;
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}
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case VIDIOCGCHAN:
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{
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struct video_channel *v = arg;
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if (v->channel != 0)
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return -EINVAL;
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v->flags = 0;
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v->tuners = 0;
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/* Good question.. its composite or SVHS so.. */
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v->type = VIDEO_TYPE_CAMERA;
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strcpy(v->name, "Camera");
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return 0;
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}
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case VIDIOCSCHAN:
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{
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struct video_channel *v = arg;
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if (v->channel != 0)
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return -EINVAL;
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return 0;
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}
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case VIDIOCGTUNER:
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{
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struct video_tuner *v = arg;
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if (v->tuner)
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return -EINVAL;
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strcpy(v->name, "Format");
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v->rangelow = 0;
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v->rangehigh = 0;
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v->flags = 0;
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v->mode = VIDEO_MODE_AUTO;
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return 0;
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}
|
||||
case VIDIOCSTUNER:
|
||||
{
|
||||
struct video_tuner *v = arg;
|
||||
if (v->tuner)
|
||||
return -EINVAL;
|
||||
if (v->mode != VIDEO_MODE_AUTO)
|
||||
return -EINVAL;
|
||||
return 0;
|
||||
}
|
||||
case VIDIOCGPICT:
|
||||
{
|
||||
struct video_picture *p = arg;
|
||||
p->colour = 0x8000;
|
||||
p->hue = 0x8000;
|
||||
p->brightness = qcam->brightness << 8;
|
||||
p->contrast = qcam->contrast << 8;
|
||||
p->whiteness = qcam->whitebal << 8;
|
||||
p->depth = qcam->bpp;
|
||||
p->palette = VIDEO_PALETTE_GREY;
|
||||
return 0;
|
||||
}
|
||||
case VIDIOCSPICT:
|
||||
{
|
||||
struct video_picture *p = arg;
|
||||
if (p->palette != VIDEO_PALETTE_GREY)
|
||||
return -EINVAL;
|
||||
if (p->depth != 4 && p->depth != 6)
|
||||
return -EINVAL;
|
||||
|
||||
/*
|
||||
* Now load the camera.
|
||||
*/
|
||||
|
||||
qcam->brightness = p->brightness >> 8;
|
||||
qcam->contrast = p->contrast >> 8;
|
||||
qcam->whitebal = p->whiteness >> 8;
|
||||
qcam->bpp = p->depth;
|
||||
|
||||
mutex_lock(&qcam->lock);
|
||||
qc_setscanmode(qcam);
|
||||
mutex_unlock(&qcam->lock);
|
||||
qcam->status |= QC_PARAM_CHANGE;
|
||||
|
||||
return 0;
|
||||
}
|
||||
case VIDIOCSWIN:
|
||||
{
|
||||
struct video_window *vw = arg;
|
||||
if (vw->flags)
|
||||
return -EINVAL;
|
||||
if (vw->clipcount)
|
||||
return -EINVAL;
|
||||
if (vw->height < 60 || vw->height > 240)
|
||||
return -EINVAL;
|
||||
if (vw->width < 80 || vw->width > 320)
|
||||
return -EINVAL;
|
||||
|
||||
qcam->width = 320;
|
||||
qcam->height = 240;
|
||||
qcam->transfer_scale = 4;
|
||||
|
||||
if (vw->width >= 160 && vw->height >= 120)
|
||||
qcam->transfer_scale = 2;
|
||||
if (vw->width >= 320 && vw->height >= 240) {
|
||||
qcam->width = 320;
|
||||
qcam->height = 240;
|
||||
qcam->transfer_scale = 1;
|
||||
}
|
||||
mutex_lock(&qcam->lock);
|
||||
qc_setscanmode(qcam);
|
||||
mutex_unlock(&qcam->lock);
|
||||
|
||||
/* We must update the camera before we grab. We could
|
||||
just have changed the grab size */
|
||||
qcam->status |= QC_PARAM_CHANGE;
|
||||
|
||||
/* Ok we figured out what to use from our wide choice */
|
||||
return 0;
|
||||
}
|
||||
case VIDIOCGWIN:
|
||||
{
|
||||
struct video_window *vw = arg;
|
||||
|
||||
memset(vw, 0, sizeof(*vw));
|
||||
vw->width = qcam->width / qcam->transfer_scale;
|
||||
vw->height = qcam->height / qcam->transfer_scale;
|
||||
return 0;
|
||||
}
|
||||
case VIDIOCKEY:
|
||||
return 0;
|
||||
case VIDIOCCAPTURE:
|
||||
case VIDIOCGFBUF:
|
||||
case VIDIOCSFBUF:
|
||||
case VIDIOCGFREQ:
|
||||
case VIDIOCSFREQ:
|
||||
case VIDIOCGAUDIO:
|
||||
case VIDIOCSAUDIO:
|
||||
return -EINVAL;
|
||||
default:
|
||||
return -ENOIOCTLCMD;
|
||||
}
|
||||
strlcpy(vcap->driver, qcam->v4l2_dev.name, sizeof(vcap->driver));
|
||||
strlcpy(vcap->card, "B&W Quickcam", sizeof(vcap->card));
|
||||
strlcpy(vcap->bus_info, "parport", sizeof(vcap->bus_info));
|
||||
vcap->version = KERNEL_VERSION(0, 0, 2);
|
||||
vcap->capabilities = V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_READWRITE;
|
||||
return 0;
|
||||
}
|
||||
|
||||
static long qcam_ioctl(struct file *file,
|
||||
unsigned int cmd, unsigned long arg)
|
||||
static int qcam_enum_input(struct file *file, void *fh, struct v4l2_input *vin)
|
||||
{
|
||||
return video_usercopy(file, cmd, arg, qcam_do_ioctl);
|
||||
if (vin->index > 0)
|
||||
return -EINVAL;
|
||||
strlcpy(vin->name, "Camera", sizeof(vin->name));
|
||||
vin->type = V4L2_INPUT_TYPE_CAMERA;
|
||||
vin->audioset = 0;
|
||||
vin->tuner = 0;
|
||||
vin->std = 0;
|
||||
vin->status = 0;
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int qcam_g_input(struct file *file, void *fh, unsigned int *inp)
|
||||
{
|
||||
*inp = 0;
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int qcam_s_input(struct file *file, void *fh, unsigned int inp)
|
||||
{
|
||||
return (inp > 0) ? -EINVAL : 0;
|
||||
}
|
||||
|
||||
static int qcam_queryctrl(struct file *file, void *priv,
|
||||
struct v4l2_queryctrl *qc)
|
||||
{
|
||||
switch (qc->id) {
|
||||
case V4L2_CID_BRIGHTNESS:
|
||||
return v4l2_ctrl_query_fill(qc, 0, 255, 1, 180);
|
||||
case V4L2_CID_CONTRAST:
|
||||
return v4l2_ctrl_query_fill(qc, 0, 255, 1, 192);
|
||||
case V4L2_CID_GAMMA:
|
||||
return v4l2_ctrl_query_fill(qc, 0, 255, 1, 105);
|
||||
}
|
||||
return -EINVAL;
|
||||
}
|
||||
|
||||
static int qcam_g_ctrl(struct file *file, void *priv,
|
||||
struct v4l2_control *ctrl)
|
||||
{
|
||||
struct qcam *qcam = video_drvdata(file);
|
||||
int ret = 0;
|
||||
|
||||
switch (ctrl->id) {
|
||||
case V4L2_CID_BRIGHTNESS:
|
||||
ctrl->value = qcam->brightness;
|
||||
break;
|
||||
case V4L2_CID_CONTRAST:
|
||||
ctrl->value = qcam->contrast;
|
||||
break;
|
||||
case V4L2_CID_GAMMA:
|
||||
ctrl->value = qcam->whitebal;
|
||||
break;
|
||||
default:
|
||||
ret = -EINVAL;
|
||||
break;
|
||||
}
|
||||
return ret;
|
||||
}
|
||||
|
||||
static int qcam_s_ctrl(struct file *file, void *priv,
|
||||
struct v4l2_control *ctrl)
|
||||
{
|
||||
struct qcam *qcam = video_drvdata(file);
|
||||
int ret = 0;
|
||||
|
||||
mutex_lock(&qcam->lock);
|
||||
switch (ctrl->id) {
|
||||
case V4L2_CID_BRIGHTNESS:
|
||||
qcam->brightness = ctrl->value;
|
||||
break;
|
||||
case V4L2_CID_CONTRAST:
|
||||
qcam->contrast = ctrl->value;
|
||||
break;
|
||||
case V4L2_CID_GAMMA:
|
||||
qcam->whitebal = ctrl->value;
|
||||
break;
|
||||
default:
|
||||
ret = -EINVAL;
|
||||
break;
|
||||
}
|
||||
if (ret == 0) {
|
||||
qc_setscanmode(qcam);
|
||||
qcam->status |= QC_PARAM_CHANGE;
|
||||
}
|
||||
mutex_unlock(&qcam->lock);
|
||||
return ret;
|
||||
}
|
||||
|
||||
static int qcam_g_fmt_vid_cap(struct file *file, void *fh, struct v4l2_format *fmt)
|
||||
{
|
||||
struct qcam *qcam = video_drvdata(file);
|
||||
struct v4l2_pix_format *pix = &fmt->fmt.pix;
|
||||
|
||||
pix->width = qcam->width / qcam->transfer_scale;
|
||||
pix->height = qcam->height / qcam->transfer_scale;
|
||||
pix->pixelformat = (qcam->bpp == 4) ? V4L2_PIX_FMT_Y4 : V4L2_PIX_FMT_Y6;
|
||||
pix->field = V4L2_FIELD_NONE;
|
||||
pix->bytesperline = qcam->width;
|
||||
pix->sizeimage = qcam->width * qcam->height;
|
||||
/* Just a guess */
|
||||
pix->colorspace = V4L2_COLORSPACE_SRGB;
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int qcam_try_fmt_vid_cap(struct file *file, void *fh, struct v4l2_format *fmt)
|
||||
{
|
||||
struct v4l2_pix_format *pix = &fmt->fmt.pix;
|
||||
|
||||
if (pix->height <= 60 || pix->width <= 80) {
|
||||
pix->height = 60;
|
||||
pix->width = 80;
|
||||
} else if (pix->height <= 120 || pix->width <= 160) {
|
||||
pix->height = 120;
|
||||
pix->width = 160;
|
||||
} else {
|
||||
pix->height = 240;
|
||||
pix->width = 320;
|
||||
}
|
||||
if (pix->pixelformat != V4L2_PIX_FMT_Y4 &&
|
||||
pix->pixelformat != V4L2_PIX_FMT_Y6)
|
||||
pix->pixelformat = V4L2_PIX_FMT_Y4;
|
||||
pix->field = V4L2_FIELD_NONE;
|
||||
pix->bytesperline = pix->width;
|
||||
pix->sizeimage = pix->width * pix->height;
|
||||
/* Just a guess */
|
||||
pix->colorspace = V4L2_COLORSPACE_SRGB;
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int qcam_s_fmt_vid_cap(struct file *file, void *fh, struct v4l2_format *fmt)
|
||||
{
|
||||
struct qcam *qcam = video_drvdata(file);
|
||||
struct v4l2_pix_format *pix = &fmt->fmt.pix;
|
||||
int ret = qcam_try_fmt_vid_cap(file, fh, fmt);
|
||||
|
||||
if (ret)
|
||||
return ret;
|
||||
qcam->width = 320;
|
||||
qcam->height = 240;
|
||||
if (pix->height == 60)
|
||||
qcam->transfer_scale = 4;
|
||||
else if (pix->height == 120)
|
||||
qcam->transfer_scale = 2;
|
||||
else
|
||||
qcam->transfer_scale = 1;
|
||||
if (pix->pixelformat == V4L2_PIX_FMT_Y6)
|
||||
qcam->bpp = 6;
|
||||
else
|
||||
qcam->bpp = 4;
|
||||
|
||||
mutex_lock(&qcam->lock);
|
||||
qc_setscanmode(qcam);
|
||||
/* We must update the camera before we grab. We could
|
||||
just have changed the grab size */
|
||||
qcam->status |= QC_PARAM_CHANGE;
|
||||
mutex_unlock(&qcam->lock);
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int qcam_enum_fmt_vid_cap(struct file *file, void *fh, struct v4l2_fmtdesc *fmt)
|
||||
{
|
||||
static struct v4l2_fmtdesc formats[] = {
|
||||
{ 0, 0, 0,
|
||||
"4-Bit Monochrome", V4L2_PIX_FMT_Y4,
|
||||
{ 0, 0, 0, 0 }
|
||||
},
|
||||
{ 0, 0, 0,
|
||||
"6-Bit Monochrome", V4L2_PIX_FMT_Y6,
|
||||
{ 0, 0, 0, 0 }
|
||||
},
|
||||
};
|
||||
enum v4l2_buf_type type = fmt->type;
|
||||
|
||||
if (fmt->index > 1)
|
||||
return -EINVAL;
|
||||
|
||||
*fmt = formats[fmt->index];
|
||||
fmt->type = type;
|
||||
return 0;
|
||||
}
|
||||
|
||||
static ssize_t qcam_read(struct file *file, char __user *buf,
|
||||
size_t count, loff_t *ppos)
|
||||
{
|
||||
struct video_device *v = video_devdata(file);
|
||||
struct qcam_device *qcam = (struct qcam_device *)v;
|
||||
struct qcam *qcam = video_drvdata(file);
|
||||
int len;
|
||||
parport_claim_or_block(qcam->pdev);
|
||||
|
||||
|
|
@ -858,43 +858,112 @@ static ssize_t qcam_read(struct file *file, char __user *buf,
|
|||
return len;
|
||||
}
|
||||
|
||||
static int qcam_exclusive_open(struct file *file)
|
||||
{
|
||||
struct video_device *dev = video_devdata(file);
|
||||
struct qcam_device *qcam = (struct qcam_device *)dev;
|
||||
|
||||
return test_and_set_bit(0, &qcam->in_use) ? -EBUSY : 0;
|
||||
}
|
||||
|
||||
static int qcam_exclusive_release(struct file *file)
|
||||
{
|
||||
struct video_device *dev = video_devdata(file);
|
||||
struct qcam_device *qcam = (struct qcam_device *)dev;
|
||||
|
||||
clear_bit(0, &qcam->in_use);
|
||||
return 0;
|
||||
}
|
||||
|
||||
static const struct v4l2_file_operations qcam_fops = {
|
||||
.owner = THIS_MODULE,
|
||||
.open = qcam_exclusive_open,
|
||||
.release = qcam_exclusive_release,
|
||||
.ioctl = qcam_ioctl,
|
||||
.ioctl = video_ioctl2,
|
||||
.read = qcam_read,
|
||||
};
|
||||
static struct video_device qcam_template = {
|
||||
.name = "Connectix Quickcam",
|
||||
.fops = &qcam_fops,
|
||||
.release = video_device_release_empty,
|
||||
|
||||
static const struct v4l2_ioctl_ops qcam_ioctl_ops = {
|
||||
.vidioc_querycap = qcam_querycap,
|
||||
.vidioc_g_input = qcam_g_input,
|
||||
.vidioc_s_input = qcam_s_input,
|
||||
.vidioc_enum_input = qcam_enum_input,
|
||||
.vidioc_queryctrl = qcam_queryctrl,
|
||||
.vidioc_g_ctrl = qcam_g_ctrl,
|
||||
.vidioc_s_ctrl = qcam_s_ctrl,
|
||||
.vidioc_enum_fmt_vid_cap = qcam_enum_fmt_vid_cap,
|
||||
.vidioc_g_fmt_vid_cap = qcam_g_fmt_vid_cap,
|
||||
.vidioc_s_fmt_vid_cap = qcam_s_fmt_vid_cap,
|
||||
.vidioc_try_fmt_vid_cap = qcam_try_fmt_vid_cap,
|
||||
};
|
||||
|
||||
#define MAX_CAMS 4
|
||||
static struct qcam_device *qcams[MAX_CAMS];
|
||||
static unsigned int num_cams;
|
||||
/* Initialize the QuickCam driver control structure. This is where
|
||||
* defaults are set for people who don't have a config file.*/
|
||||
|
||||
static struct qcam *qcam_init(struct parport *port)
|
||||
{
|
||||
struct qcam *qcam;
|
||||
struct v4l2_device *v4l2_dev;
|
||||
|
||||
qcam = kzalloc(sizeof(struct qcam), GFP_KERNEL);
|
||||
if (qcam == NULL)
|
||||
return NULL;
|
||||
|
||||
v4l2_dev = &qcam->v4l2_dev;
|
||||
strlcpy(v4l2_dev->name, "bw-qcam", sizeof(v4l2_dev->name));
|
||||
|
||||
if (v4l2_device_register(NULL, v4l2_dev) < 0) {
|
||||
v4l2_err(v4l2_dev, "Could not register v4l2_device\n");
|
||||
return NULL;
|
||||
}
|
||||
|
||||
qcam->pport = port;
|
||||
qcam->pdev = parport_register_device(port, "bw-qcam", NULL, NULL,
|
||||
NULL, 0, NULL);
|
||||
if (qcam->pdev == NULL) {
|
||||
v4l2_err(v4l2_dev, "couldn't register for %s.\n", port->name);
|
||||
kfree(qcam);
|
||||
return NULL;
|
||||
}
|
||||
|
||||
strlcpy(qcam->vdev.name, "Connectix QuickCam", sizeof(qcam->vdev.name));
|
||||
qcam->vdev.v4l2_dev = v4l2_dev;
|
||||
qcam->vdev.fops = &qcam_fops;
|
||||
qcam->vdev.ioctl_ops = &qcam_ioctl_ops;
|
||||
qcam->vdev.release = video_device_release_empty;
|
||||
video_set_drvdata(&qcam->vdev, qcam);
|
||||
|
||||
mutex_init(&qcam->lock);
|
||||
|
||||
qcam->port_mode = (QC_ANY | QC_NOTSET);
|
||||
qcam->width = 320;
|
||||
qcam->height = 240;
|
||||
qcam->bpp = 4;
|
||||
qcam->transfer_scale = 2;
|
||||
qcam->contrast = 192;
|
||||
qcam->brightness = 180;
|
||||
qcam->whitebal = 105;
|
||||
qcam->top = 1;
|
||||
qcam->left = 14;
|
||||
qcam->mode = -1;
|
||||
qcam->status = QC_PARAM_CHANGE;
|
||||
return qcam;
|
||||
}
|
||||
|
||||
static int qc_calibrate(struct qcam *q)
|
||||
{
|
||||
/*
|
||||
* Bugfix by Hanno Mueller hmueller@kabel.de, Mai 21 96
|
||||
* The white balance is an individual value for each
|
||||
* quickcam.
|
||||
*/
|
||||
|
||||
int value;
|
||||
int count = 0;
|
||||
|
||||
qc_command(q, 27); /* AutoAdjustOffset */
|
||||
qc_command(q, 0); /* Dummy Parameter, ignored by the camera */
|
||||
|
||||
/* GetOffset (33) will read 255 until autocalibration */
|
||||
/* is finished. After that, a value of 1-254 will be */
|
||||
/* returned. */
|
||||
|
||||
do {
|
||||
qc_command(q, 33);
|
||||
value = qc_readparam(q);
|
||||
mdelay(1);
|
||||
schedule();
|
||||
count++;
|
||||
} while (value == 0xff && count < 2048);
|
||||
|
||||
q->whitebal = value;
|
||||
return value;
|
||||
}
|
||||
|
||||
static int init_bwqcam(struct parport *port)
|
||||
{
|
||||
struct qcam_device *qcam;
|
||||
struct qcam *qcam;
|
||||
|
||||
if (num_cams == MAX_CAMS) {
|
||||
printk(KERN_ERR "Too many Quickcams (max %d)\n", MAX_CAMS);
|
||||
|
|
@ -919,7 +988,7 @@ static int init_bwqcam(struct parport *port)
|
|||
|
||||
parport_release(qcam->pdev);
|
||||
|
||||
printk(KERN_INFO "Connectix Quickcam on %s\n", qcam->pport->name);
|
||||
v4l2_info(&qcam->v4l2_dev, "Connectix Quickcam on %s\n", qcam->pport->name);
|
||||
|
||||
if (video_register_device(&qcam->vdev, VFL_TYPE_GRABBER, video_nr) < 0) {
|
||||
parport_unregister_device(qcam->pdev);
|
||||
|
|
@ -932,7 +1001,7 @@ static int init_bwqcam(struct parport *port)
|
|||
return 0;
|
||||
}
|
||||
|
||||
static void close_bwqcam(struct qcam_device *qcam)
|
||||
static void close_bwqcam(struct qcam *qcam)
|
||||
{
|
||||
video_unregister_device(&qcam->vdev);
|
||||
parport_unregister_device(qcam->pdev);
|
||||
|
|
@ -983,7 +1052,7 @@ static void bwqcam_detach(struct parport *port)
|
|||
{
|
||||
int i;
|
||||
for (i = 0; i < num_cams; i++) {
|
||||
struct qcam_device *qcam = qcams[i];
|
||||
struct qcam *qcam = qcams[i];
|
||||
if (qcam && qcam->pdev->port == port) {
|
||||
qcams[i] = NULL;
|
||||
close_bwqcam(qcam);
|
||||
|
|
|
|||
|
|
@ -1,69 +0,0 @@
|
|||
/*
|
||||
* Video4Linux bw-qcam driver
|
||||
*
|
||||
* Derived from code..
|
||||
*/
|
||||
|
||||
/******************************************************************
|
||||
|
||||
Copyright (C) 1996 by Scott Laird
|
||||
|
||||
Permission is hereby granted, free of charge, to any person obtaining
|
||||
a copy of this software and associated documentation files (the
|
||||
"Software"), to deal in the Software without restriction, including
|
||||
without limitation the rights to use, copy, modify, merge, publish,
|
||||
distribute, sublicense, and/or sell copies of the Software, and to
|
||||
permit persons to whom the Software is furnished to do so, subject to
|
||||
the following conditions:
|
||||
|
||||
The above copyright notice and this permission notice shall be
|
||||
included in all copies or substantial portions of the Software.
|
||||
|
||||
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
|
||||
EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
|
||||
MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
|
||||
IN NO EVENT SHALL SCOTT LAIRD BE LIABLE FOR ANY CLAIM, DAMAGES OR
|
||||
OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
|
||||
ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
|
||||
OTHER DEALINGS IN THE SOFTWARE.
|
||||
|
||||
******************************************************************/
|
||||
|
||||
/* One from column A... */
|
||||
#define QC_NOTSET 0
|
||||
#define QC_UNIDIR 1
|
||||
#define QC_BIDIR 2
|
||||
#define QC_SERIAL 3
|
||||
|
||||
/* ... and one from column B */
|
||||
#define QC_ANY 0x00
|
||||
#define QC_FORCE_UNIDIR 0x10
|
||||
#define QC_FORCE_BIDIR 0x20
|
||||
#define QC_FORCE_SERIAL 0x30
|
||||
/* in the port_mode member */
|
||||
|
||||
#define QC_MODE_MASK 0x07
|
||||
#define QC_FORCE_MASK 0x70
|
||||
|
||||
#define MAX_HEIGHT 243
|
||||
#define MAX_WIDTH 336
|
||||
|
||||
/* Bit fields for status flags */
|
||||
#define QC_PARAM_CHANGE 0x01 /* Camera status change has occurred */
|
||||
|
||||
struct qcam_device {
|
||||
struct video_device vdev;
|
||||
struct pardevice *pdev;
|
||||
struct parport *pport;
|
||||
struct mutex lock;
|
||||
int width, height;
|
||||
int bpp;
|
||||
int mode;
|
||||
int contrast, brightness, whitebal;
|
||||
int port_mode;
|
||||
int transfer_scale;
|
||||
int top, left;
|
||||
int status;
|
||||
unsigned int saved_bits;
|
||||
unsigned long in_use;
|
||||
};
|
||||
Loading…
Reference in a new issue