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authorHans Verkuil <hans.verkuil@cisco.com>2014-12-02 12:40:33 -0300
committerMauro Carvalho Chehab <mchehab@osg.samsung.com>2014-12-16 23:21:44 -0200
commit427ae153c65ad7a08288d86baf99000569627d03 (patch)
tree52119858c582478c8737366abbb308af5c95a9f6 /drivers/media/parport/c-qcam.c
parentea2e813e8cc3492c951b9895724fd47187e04a6f (diff)
[media] bq/c-qcam, w9966, pms: move to staging in preparation for removalmedia/v3.19-2
These drivers haven't been tested in a long, long time. The hardware is ancient and hopelessly obsolete. These drivers also need to be converted to newer media frameworks but due to the lack of hardware that's going to be impossible. In addition, cheaper and vastly better hardware is available today. So these drivers are a prime candidate for removal. If someone is interested in working on these drivers to prevent their removal, then please contact the linux-media mailinglist. Let's be honest, the age of parallel port webcams and ISA video capture boards is really gone. Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
Diffstat (limited to 'drivers/media/parport/c-qcam.c')
-rw-r--r--drivers/media/parport/c-qcam.c882
1 files changed, 0 insertions, 882 deletions
diff --git a/drivers/media/parport/c-qcam.c b/drivers/media/parport/c-qcam.c
deleted file mode 100644
index b9010bd3ed3e..000000000000
--- a/drivers/media/parport/c-qcam.c
+++ /dev/null
@@ -1,882 +0,0 @@
-/*
- * Video4Linux Colour QuickCam driver
- * Copyright 1997-2000 Philip Blundell <philb@gnu.org>
- *
- * Module parameters:
- *
- * parport=auto -- probe all parports (default)
- * parport=0 -- parport0 becomes qcam1
- * parport=2,0,1 -- parports 2,0,1 are tried in that order
- *
- * probe=0 -- do no probing, assume camera is present
- * probe=1 -- use IEEE-1284 autoprobe data only (default)
- * probe=2 -- probe aggressively for cameras
- *
- * force_rgb=1 -- force data format to RGB (default is BGR)
- *
- * The parport parameter controls which parports will be scanned.
- * Scanning all parports causes some printers to print a garbage page.
- * -- March 14, 1999 Billy Donahue <billy@escape.com>
- *
- * Fixed data format to BGR, added force_rgb parameter. Added missing
- * parport_unregister_driver() on module removal.
- * -- May 28, 2000 Claudio Matsuoka <claudio@conectiva.com>
- */
-
-#include <linux/module.h>
-#include <linux/delay.h>
-#include <linux/errno.h>
-#include <linux/fs.h>
-#include <linux/init.h>
-#include <linux/kernel.h>
-#include <linux/slab.h>
-#include <linux/mm.h>
-#include <linux/parport.h>
-#include <linux/sched.h>
-#include <linux/mutex.h>
-#include <linux/jiffies.h>
-#include <linux/videodev2.h>
-#include <asm/uaccess.h>
-#include <media/v4l2-device.h>
-#include <media/v4l2-common.h>
-#include <media/v4l2-ioctl.h>
-#include <media/v4l2-fh.h>
-#include <media/v4l2-ctrls.h>
-#include <media/v4l2-event.h>
-
-struct qcam {
- struct v4l2_device v4l2_dev;
- struct video_device vdev;
- struct v4l2_ctrl_handler hdl;
- struct pardevice *pdev;
- struct parport *pport;
- int width, height;
- int ccd_width, ccd_height;
- int mode;
- int contrast, brightness, whitebal;
- int top, left;
- unsigned int bidirectional;
- struct mutex lock;
-};
-
-/* cameras maximum */
-#define MAX_CAMS 4
-
-/* The three possible QuickCam modes */
-#define QC_MILLIONS 0x18
-#define QC_BILLIONS 0x10
-#define QC_THOUSANDS 0x08 /* with VIDEC compression (not supported) */
-
-/* The three possible decimations */
-#define QC_DECIMATION_1 0
-#define QC_DECIMATION_2 2
-#define QC_DECIMATION_4 4
-
-#define BANNER "Colour QuickCam for Video4Linux v0.06"
-
-static int parport[MAX_CAMS] = { [1 ... MAX_CAMS-1] = -1 };
-static int probe = 2;
-static bool force_rgb;
-static int video_nr = -1;
-
-/* FIXME: parport=auto would never have worked, surely? --RR */
-MODULE_PARM_DESC(parport, "parport=<auto|n[,n]...> for port detection method\n"
- "probe=<0|1|2> for camera detection method\n"
- "force_rgb=<0|1> for RGB data format (default BGR)");
-module_param_array(parport, int, NULL, 0);
-module_param(probe, int, 0);
-module_param(force_rgb, bool, 0);
-module_param(video_nr, int, 0);
-
-static struct qcam *qcams[MAX_CAMS];
-static unsigned int num_cams;
-
-static inline void qcam_set_ack(struct qcam *qcam, unsigned int i)
-{
- /* note: the QC specs refer to the PCAck pin by voltage, not
- software level. PC ports have builtin inverters. */
- parport_frob_control(qcam->pport, 8, i ? 8 : 0);
-}
-
-static inline unsigned int qcam_ready1(struct qcam *qcam)
-{
- return (parport_read_status(qcam->pport) & 0x8) ? 1 : 0;
-}
-
-static inline unsigned int qcam_ready2(struct qcam *qcam)
-{
- return (parport_read_data(qcam->pport) & 0x1) ? 1 : 0;
-}
-
-static unsigned int qcam_await_ready1(struct qcam *qcam, int value)
-{
- struct v4l2_device *v4l2_dev = &qcam->v4l2_dev;
- unsigned long oldjiffies = jiffies;
- unsigned int i;
-
- for (oldjiffies = jiffies;
- time_before(jiffies, oldjiffies + msecs_to_jiffies(40));)
- if (qcam_ready1(qcam) == value)
- return 0;
-
- /* If the camera didn't respond within 1/25 second, poll slowly
- for a while. */
- for (i = 0; i < 50; i++) {
- if (qcam_ready1(qcam) == value)
- return 0;
- msleep_interruptible(100);
- }
-
- /* Probably somebody pulled the plug out. Not much we can do. */
- v4l2_err(v4l2_dev, "ready1 timeout (%d) %x %x\n", value,
- parport_read_status(qcam->pport),
- parport_read_control(qcam->pport));
- return 1;
-}
-
-static unsigned int qcam_await_ready2(struct qcam *qcam, int value)
-{
- struct v4l2_device *v4l2_dev = &qcam->v4l2_dev;
- unsigned long oldjiffies = jiffies;
- unsigned int i;
-
- for (oldjiffies = jiffies;
- time_before(jiffies, oldjiffies + msecs_to_jiffies(40));)
- if (qcam_ready2(qcam) == value)
- return 0;
-
- /* If the camera didn't respond within 1/25 second, poll slowly
- for a while. */
- for (i = 0; i < 50; i++) {
- if (qcam_ready2(qcam) == value)
- return 0;
- msleep_interruptible(100);
- }
-
- /* Probably somebody pulled the plug out. Not much we can do. */
- v4l2_err(v4l2_dev, "ready2 timeout (%d) %x %x %x\n", value,
- parport_read_status(qcam->pport),
- parport_read_control(qcam->pport),
- parport_read_data(qcam->pport));
- return 1;
-}
-
-static int qcam_read_data(struct qcam *qcam)
-{
- unsigned int idata;
-
- qcam_set_ack(qcam, 0);
- if (qcam_await_ready1(qcam, 1))
- return -1;
- idata = parport_read_status(qcam->pport) & 0xf0;
- qcam_set_ack(qcam, 1);
- if (qcam_await_ready1(qcam, 0))
- return -1;
- idata |= parport_read_status(qcam->pport) >> 4;
- return idata;
-}
-
-static int qcam_write_data(struct qcam *qcam, unsigned int data)
-{
- struct v4l2_device *v4l2_dev = &qcam->v4l2_dev;
- unsigned int idata;
-
- parport_write_data(qcam->pport, data);
- idata = qcam_read_data(qcam);
- if (data != idata) {
- v4l2_warn(v4l2_dev, "sent %x but received %x\n", data,
- idata);
- return 1;
- }
- return 0;
-}
-
-static inline int qcam_set(struct qcam *qcam, unsigned int cmd, unsigned int data)
-{
- if (qcam_write_data(qcam, cmd))
- return -1;
- if (qcam_write_data(qcam, data))
- return -1;
- return 0;
-}
-
-static inline int qcam_get(struct qcam *qcam, unsigned int cmd)
-{
- if (qcam_write_data(qcam, cmd))
- return -1;
- return qcam_read_data(qcam);
-}
-
-static int qc_detect(struct qcam *qcam)
-{
- unsigned int stat, ostat, i, count = 0;
-
- /* The probe routine below is not very reliable. The IEEE-1284
- probe takes precedence. */
- /* XXX Currently parport provides no way to distinguish between
- "the IEEE probe was not done" and "the probe was done, but
- no device was found". Fix this one day. */
- if (qcam->pport->probe_info[0].class == PARPORT_CLASS_MEDIA
- && qcam->pport->probe_info[0].model
- && !strcmp(qcam->pdev->port->probe_info[0].model,
- "Color QuickCam 2.0")) {
- printk(KERN_DEBUG "QuickCam: Found by IEEE1284 probe.\n");
- return 1;
- }
-
- if (probe < 2)
- return 0;
-
- parport_write_control(qcam->pport, 0xc);
-
- /* look for a heartbeat */
- ostat = stat = parport_read_status(qcam->pport);
- for (i = 0; i < 250; i++) {
- mdelay(1);
- stat = parport_read_status(qcam->pport);
- if (ostat != stat) {
- if (++count >= 3)
- return 1;
- ostat = stat;
- }
- }
-
- /* Reset the camera and try again */
- parport_write_control(qcam->pport, 0xc);
- parport_write_control(qcam->pport, 0x8);
- mdelay(1);
- parport_write_control(qcam->pport, 0xc);
- mdelay(1);
- count = 0;
-
- ostat = stat = parport_read_status(qcam->pport);
- for (i = 0; i < 250; i++) {
- mdelay(1);
- stat = parport_read_status(qcam->pport);
- if (ostat != stat) {
- if (++count >= 3)
- return 1;
- ostat = stat;
- }
- }
-
- /* no (or flatline) camera, give up */
- return 0;
-}
-
-static void qc_reset(struct qcam *qcam)
-{
- parport_write_control(qcam->pport, 0xc);
- parport_write_control(qcam->pport, 0x8);
- mdelay(1);
- parport_write_control(qcam->pport, 0xc);
- mdelay(1);
-}
-
-/* Reset the QuickCam and program for brightness, contrast,
- * white-balance, and resolution. */
-
-static void qc_setup(struct qcam *qcam)
-{
- qc_reset(qcam);
-
- /* Set the brightness. */
- qcam_set(qcam, 11, qcam->brightness);
-
- /* Set the height and width. These refer to the actual
- CCD area *before* applying the selected decimation. */
- qcam_set(qcam, 17, qcam->ccd_height);
- qcam_set(qcam, 19, qcam->ccd_width / 2);
-
- /* Set top and left. */
- qcam_set(qcam, 0xd, qcam->top);
- qcam_set(qcam, 0xf, qcam->left);
-
- /* Set contrast and white balance. */
- qcam_set(qcam, 0x19, qcam->contrast);
- qcam_set(qcam, 0x1f, qcam->whitebal);
-
- /* Set the speed. */
- qcam_set(qcam, 45, 2);
-}
-
-/* Read some bytes from the camera and put them in the buffer.
- nbytes should be a multiple of 3, because bidirectional mode gives
- us three bytes at a time. */
-
-static unsigned int qcam_read_bytes(struct qcam *qcam, unsigned char *buf, unsigned int nbytes)
-{
- unsigned int bytes = 0;
-
- qcam_set_ack(qcam, 0);
- if (qcam->bidirectional) {
- /* It's a bidirectional port */
- while (bytes < nbytes) {
- unsigned int lo1, hi1, lo2, hi2;
- unsigned char r, g, b;
-
- if (qcam_await_ready2(qcam, 1))
- return bytes;
- lo1 = parport_read_data(qcam->pport) >> 1;
- hi1 = ((parport_read_status(qcam->pport) >> 3) & 0x1f) ^ 0x10;
- qcam_set_ack(qcam, 1);
- if (qcam_await_ready2(qcam, 0))
- return bytes;
- lo2 = parport_read_data(qcam->pport) >> 1;
- hi2 = ((parport_read_status(qcam->pport) >> 3) & 0x1f) ^ 0x10;
- qcam_set_ack(qcam, 0);
- r = lo1 | ((hi1 & 1) << 7);
- g = ((hi1 & 0x1e) << 3) | ((hi2 & 0x1e) >> 1);
- b = lo2 | ((hi2 & 1) << 7);
- if (force_rgb) {
- buf[bytes++] = r;
- buf[bytes++] = g;
- buf[bytes++] = b;
- } else {
- buf[bytes++] = b;
- buf[bytes++] = g;
- buf[bytes++] = r;
- }
- }
- } else {
- /* It's a unidirectional port */
- int i = 0, n = bytes;
- unsigned char rgb[3];
-
- while (bytes < nbytes) {
- unsigned int hi, lo;
-
- if (qcam_await_ready1(qcam, 1))
- return bytes;
- hi = (parport_read_status(qcam->pport) & 0xf0);
- qcam_set_ack(qcam, 1);
- if (qcam_await_ready1(qcam, 0))
- return bytes;
- lo = (parport_read_status(qcam->pport) & 0xf0);
- qcam_set_ack(qcam, 0);
- /* flip some bits */
- rgb[(i = bytes++ % 3)] = (hi | (lo >> 4)) ^ 0x88;
- if (i >= 2) {
-get_fragment:
- if (force_rgb) {
- buf[n++] = rgb[0];
- buf[n++] = rgb[1];
- buf[n++] = rgb[2];
- } else {
- buf[n++] = rgb[2];
- buf[n++] = rgb[1];
- buf[n++] = rgb[0];
- }
- }
- }
- if (i) {
- i = 0;
- goto get_fragment;
- }
- }
- return bytes;
-}
-
-#define BUFSZ 150
-
-static long qc_capture(struct qcam *qcam, char __user *buf, unsigned long len)
-{
- struct v4l2_device *v4l2_dev = &qcam->v4l2_dev;
- unsigned lines, pixelsperline;
- unsigned int is_bi_dir = qcam->bidirectional;
- size_t wantlen, outptr = 0;
- char tmpbuf[BUFSZ];
-
- if (!access_ok(VERIFY_WRITE, buf, len))
- return -EFAULT;
-
- /* Wait for camera to become ready */
- for (;;) {
- int i = qcam_get(qcam, 41);
-
- if (i == -1) {
- qc_setup(qcam);
- return -EIO;
- }
- if ((i & 0x80) == 0)
- break;
- schedule();
- }
-
- if (qcam_set(qcam, 7, (qcam->mode | (is_bi_dir ? 1 : 0)) + 1))
- return -EIO;
-
- lines = qcam->height;
- pixelsperline = qcam->width;
-
- if (is_bi_dir) {
- /* Turn the port around */
- parport_data_reverse(qcam->pport);
- mdelay(3);
- qcam_set_ack(qcam, 0);
- if (qcam_await_ready1(qcam, 1)) {
- qc_setup(qcam);
- return -EIO;
- }
- qcam_set_ack(qcam, 1);
- if (qcam_await_ready1(qcam, 0)) {
- qc_setup(qcam);
- return -EIO;
- }
- }
-
- wantlen = lines * pixelsperline * 24 / 8;
-
- while (wantlen) {
- size_t t, s;
-
- s = (wantlen > BUFSZ) ? BUFSZ : wantlen;
- t = qcam_read_bytes(qcam, tmpbuf, s);
- if (outptr < len) {
- size_t sz = len - outptr;
-
- if (sz > t)
- sz = t;
- if (__copy_to_user(buf + outptr, tmpbuf, sz))
- break;
- outptr += sz;
- }
- wantlen -= t;
- if (t < s)
- break;
- cond_resched();
- }
-
- len = outptr;
-
- if (wantlen) {
- v4l2_err(v4l2_dev, "short read.\n");
- if (is_bi_dir)
- parport_data_forward(qcam->pport);
- qc_setup(qcam);
- return len;
- }
-
- if (is_bi_dir) {
- int l;
-
- do {
- l = qcam_read_bytes(qcam, tmpbuf, 3);
- cond_resched();
- } while (l && (tmpbuf[0] == 0x7e || tmpbuf[1] == 0x7e || tmpbuf[2] == 0x7e));
- if (force_rgb) {
- if (tmpbuf[0] != 0xe || tmpbuf[1] != 0x0 || tmpbuf[2] != 0xf)
- v4l2_err(v4l2_dev, "bad EOF\n");
- } else {
- if (tmpbuf[0] != 0xf || tmpbuf[1] != 0x0 || tmpbuf[2] != 0xe)
- v4l2_err(v4l2_dev, "bad EOF\n");
- }
- qcam_set_ack(qcam, 0);
- if (qcam_await_ready1(qcam, 1)) {
- v4l2_err(v4l2_dev, "no ack after EOF\n");
- parport_data_forward(qcam->pport);
- qc_setup(qcam);
- return len;
- }
- parport_data_forward(qcam->pport);
- mdelay(3);
- 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(qcam, tmpbuf, 1);
- cond_resched();
- } while (l && tmpbuf[0] == 0x7e);
- l = qcam_read_bytes(qcam, tmpbuf + 1, 2);
- if (force_rgb) {
- if (tmpbuf[0] != 0xe || tmpbuf[1] != 0x0 || tmpbuf[2] != 0xf)
- v4l2_err(v4l2_dev, "bad EOF\n");
- } else {
- if (tmpbuf[0] != 0xf || tmpbuf[1] != 0x0 || tmpbuf[2] != 0xe)
- v4l2_err(v4l2_dev, "bad EOF\n");
- }
- }
-
- qcam_write_data(qcam, 0);
- return len;
-}
-
-/*
- * Video4linux interfacing
- */
-
-static int qcam_querycap(struct file *file, void *priv,
- struct v4l2_capability *vcap)
-{
- struct qcam *qcam = video_drvdata(file);
-
- 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->device_caps = V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_READWRITE;
- vcap->capabilities = vcap->device_caps | V4L2_CAP_DEVICE_CAPS;
- return 0;
-}
-
-static int qcam_enum_input(struct file *file, void *fh, struct v4l2_input *vin)
-{
- if (vin->index > 0)
- return -EINVAL;
- strlcpy(vin->name, "Camera", sizeof(vin->name));
- vin->type = V4L2_INPUT_TYPE_CAMERA;
- vin->audioset = 0;
- vin->tuner = 0;
- vin->std = 0;
- vin->status = 0;
- return 0;
-}
-
-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_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 qcam *qcam = video_drvdata(file);
- int len;
-
- mutex_lock(&qcam->lock);
- parport_claim_or_block(qcam->pdev);
- /* Probably should have a semaphore against multiple users */
- len = qc_capture(qcam, buf, count);
- parport_release(qcam->pdev);
- mutex_unlock(&qcam->lock);
- return len;
-}
-
-static int qcam_s_ctrl(struct v4l2_ctrl *ctrl)
-{
- struct qcam *qcam =
- container_of(ctrl->handler, struct qcam, hdl);
- int ret = 0;
-
- mutex_lock(&qcam->lock);
- switch (ctrl->id) {
- case V4L2_CID_BRIGHTNESS:
- qcam->brightness = ctrl->val;
- break;
- case V4L2_CID_CONTRAST:
- qcam->contrast = ctrl->val;
- break;
- case V4L2_CID_GAMMA:
- qcam->whitebal = ctrl->val;
- 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 const struct v4l2_file_operations qcam_fops = {
- .owner = THIS_MODULE,
- .open = v4l2_fh_open,
- .release = v4l2_fh_release,
- .poll = v4l2_ctrl_poll,
- .unlocked_ioctl = video_ioctl2,
- .read = qcam_read,
-};
-
-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_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,
- .vidioc_log_status = v4l2_ctrl_log_status,
- .vidioc_subscribe_event = v4l2_ctrl_subscribe_event,
- .vidioc_unsubscribe_event = v4l2_event_unsubscribe,
-};
-
-static const struct v4l2_ctrl_ops qcam_ctrl_ops = {
- .s_ctrl = qcam_s_ctrl,
-};
-
-/* Initialize the QuickCam driver control structure. */
-
-static struct qcam *qcam_init(struct parport *port)
-{
- struct qcam *qcam;
- struct v4l2_device *v4l2_dev;
-
- qcam = kzalloc(sizeof(*qcam), GFP_KERNEL);
- if (qcam == NULL)
- return NULL;
-
- v4l2_dev = &qcam->v4l2_dev;
- strlcpy(v4l2_dev->name, "c-qcam", sizeof(v4l2_dev->name));
-
- if (v4l2_device_register(NULL, v4l2_dev) < 0) {
- v4l2_err(v4l2_dev, "Could not register v4l2_device\n");
- kfree(qcam);
- return NULL;
- }
-
- v4l2_ctrl_handler_init(&qcam->hdl, 3);
- v4l2_ctrl_new_std(&qcam->hdl, &qcam_ctrl_ops,
- V4L2_CID_BRIGHTNESS, 0, 255, 1, 240);
- v4l2_ctrl_new_std(&qcam->hdl, &qcam_ctrl_ops,
- V4L2_CID_CONTRAST, 0, 255, 1, 192);
- v4l2_ctrl_new_std(&qcam->hdl, &qcam_ctrl_ops,
- V4L2_CID_GAMMA, 0, 255, 1, 128);
- if (qcam->hdl.error) {
- v4l2_err(v4l2_dev, "couldn't register controls\n");
- v4l2_ctrl_handler_free(&qcam->hdl);
- kfree(qcam);
- return NULL;
- }
-
- qcam->pport = port;
- qcam->pdev = parport_register_device(port, "c-qcam", NULL, NULL,
- NULL, 0, NULL);
-
- 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);
- v4l2_ctrl_handler_free(&qcam->hdl);
- 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;
- qcam->vdev.ctrl_handler = &qcam->hdl;
- 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 int init_cqcam(struct parport *port)
-{
- struct qcam *qcam;
- struct v4l2_device *v4l2_dev;
-
- if (parport[0] != -1) {
- /* The user gave specific instructions */
- int i, found = 0;
-
- for (i = 0; i < MAX_CAMS && parport[i] != -1; i++) {
- if (parport[0] == port->number)
- found = 1;
- }
- if (!found)
- return -ENODEV;
- }
-
- if (num_cams == MAX_CAMS)
- return -ENOSPC;
-
- qcam = qcam_init(port);
- if (qcam == NULL)
- return -ENODEV;
-
- v4l2_dev = &qcam->v4l2_dev;
-
- parport_claim_or_block(qcam->pdev);
-
- qc_reset(qcam);
-
- if (probe && qc_detect(qcam) == 0) {
- parport_release(qcam->pdev);
- parport_unregister_device(qcam->pdev);
- kfree(qcam);
- return -ENODEV;
- }
-
- qc_setup(qcam);
-
- parport_release(qcam->pdev);
-
- if (video_register_device(&qcam->vdev, VFL_TYPE_GRABBER, video_nr) < 0) {
- v4l2_err(v4l2_dev, "Unable to register Colour QuickCam on %s\n",
- qcam->pport->name);
- parport_unregister_device(qcam->pdev);
- kfree(qcam);
- return -ENODEV;
- }
-
- v4l2_info(v4l2_dev, "%s: Colour QuickCam found on %s\n",
- video_device_node_name(&qcam->vdev), qcam->pport->name);
-
- qcams[num_cams++] = qcam;
-
- return 0;
-}
-
-static void close_cqcam(struct qcam *qcam)
-{
- video_unregister_device(&qcam->vdev);
- v4l2_ctrl_handler_free(&qcam->hdl);
- parport_unregister_device(qcam->pdev);
- kfree(qcam);
-}
-
-static void cq_attach(struct parport *port)
-{
- init_cqcam(port);
-}
-
-static void cq_detach(struct parport *port)
-{
- /* Write this some day. */
-}
-
-static struct parport_driver cqcam_driver = {
- .name = "cqcam",
- .attach = cq_attach,
- .detach = cq_detach,
-};
-
-static int __init cqcam_init(void)
-{
- printk(KERN_INFO BANNER "\n");
-
- return parport_register_driver(&cqcam_driver);
-}
-
-static void __exit cqcam_cleanup(void)
-{
- unsigned int i;
-
- for (i = 0; i < num_cams; i++)
- close_cqcam(qcams[i]);
-
- parport_unregister_driver(&cqcam_driver);
-}
-
-MODULE_AUTHOR("Philip Blundell <philb@gnu.org>");
-MODULE_DESCRIPTION(BANNER);
-MODULE_LICENSE("GPL");
-MODULE_VERSION("0.0.4");
-
-module_init(cqcam_init);
-module_exit(cqcam_cleanup);

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