diff options
Diffstat (limited to 'drivers/media/video/c-qcam.c')
| -rw-r--r-- | drivers/media/video/c-qcam.c | 634 |
1 files changed, 330 insertions, 304 deletions
diff --git a/drivers/media/video/c-qcam.c b/drivers/media/video/c-qcam.c index 8f1dd88b32a..6e4b19698c1 100644 --- a/drivers/media/video/c-qcam.c +++ b/drivers/media/video/c-qcam.c @@ -33,15 +33,17 @@ #include <linux/mm.h> #include <linux/parport.h> #include <linux/sched.h> -#include <linux/videodev.h> -#include <media/v4l2-common.h> -#include <media/v4l2-ioctl.h> #include <linux/mutex.h> #include <linux/jiffies.h> - +#include <linux/version.h> +#include <linux/videodev2.h> #include <asm/uaccess.h> +#include <media/v4l2-device.h> +#include <media/v4l2-common.h> +#include <media/v4l2-ioctl.h> -struct qcam_device { +struct qcam { + struct v4l2_device v4l2_dev; struct video_device vdev; struct pardevice *pdev; struct parport *pport; @@ -51,7 +53,6 @@ struct qcam_device { int contrast, brightness, whitebal; int top, left; unsigned int bidirectional; - unsigned long in_use; struct mutex lock; }; @@ -68,33 +69,45 @@ struct qcam_device { #define QC_DECIMATION_2 2 #define QC_DECIMATION_4 4 -#define BANNER "Colour QuickCam for Video4Linux v0.05" +#define BANNER "Colour QuickCam for Video4Linux v0.06" static int parport[MAX_CAMS] = { [1 ... MAX_CAMS-1] = -1 }; static int probe = 2; static int force_rgb; static int video_nr = -1; -static inline void qcam_set_ack(struct qcam_device *qcam, unsigned int i) +/* FIXME: parport=auto would never have worked, surely? --RR */ +MODULE_PARM_DESC(parport, "parport=<auto|n[,n]...> for port detection method\n" + "probe=<0|1|2> for camera detection method\n" + "force_rgb=<0|1> for RGB data format (default BGR)"); +module_param_array(parport, int, NULL, 0); +module_param(probe, int, 0); +module_param(force_rgb, bool, 0); +module_param(video_nr, int, 0); + +static struct qcam *qcams[MAX_CAMS]; +static unsigned int num_cams; + +static inline void qcam_set_ack(struct qcam *qcam, unsigned int i) { /* note: the QC specs refer to the PCAck pin by voltage, not software level. PC ports have builtin inverters. */ parport_frob_control(qcam->pport, 8, i ? 8 : 0); } -static inline unsigned int qcam_ready1(struct qcam_device *qcam) +static inline unsigned int qcam_ready1(struct qcam *qcam) { return (parport_read_status(qcam->pport) & 0x8) ? 1 : 0; } -static inline unsigned int qcam_ready2(struct qcam_device *qcam) +static inline unsigned int qcam_ready2(struct qcam *qcam) { return (parport_read_data(qcam->pport) & 0x1) ? 1 : 0; } -static unsigned int qcam_await_ready1(struct qcam_device *qcam, - int value) +static unsigned int qcam_await_ready1(struct qcam *qcam, int value) { + struct v4l2_device *v4l2_dev = &qcam->v4l2_dev; unsigned long oldjiffies = jiffies; unsigned int i; @@ -112,14 +125,15 @@ static unsigned int qcam_await_ready1(struct qcam_device *qcam, } /* Probably somebody pulled the plug out. Not much we can do. */ - printk(KERN_ERR "c-qcam: ready1 timeout (%d) %x %x\n", value, + v4l2_err(v4l2_dev, "ready1 timeout (%d) %x %x\n", value, parport_read_status(qcam->pport), parport_read_control(qcam->pport)); return 1; } -static unsigned int qcam_await_ready2(struct qcam_device *qcam, int value) +static unsigned int qcam_await_ready2(struct qcam *qcam, int value) { + struct v4l2_device *v4l2_dev = &qcam->v4l2_dev; unsigned long oldjiffies = jiffies; unsigned int i; @@ -137,14 +151,14 @@ static unsigned int qcam_await_ready2(struct qcam_device *qcam, int value) } /* Probably somebody pulled the plug out. Not much we can do. */ - printk(KERN_ERR "c-qcam: ready2 timeout (%d) %x %x %x\n", value, + v4l2_err(v4l2_dev, "ready2 timeout (%d) %x %x %x\n", value, parport_read_status(qcam->pport), parport_read_control(qcam->pport), parport_read_data(qcam->pport)); return 1; } -static int qcam_read_data(struct qcam_device *qcam) +static int qcam_read_data(struct qcam *qcam) { unsigned int idata; @@ -159,21 +173,22 @@ static int qcam_read_data(struct qcam_device *qcam) return idata; } -static int qcam_write_data(struct qcam_device *qcam, unsigned int data) +static int qcam_write_data(struct qcam *qcam, unsigned int data) { + struct v4l2_device *v4l2_dev = &qcam->v4l2_dev; unsigned int idata; parport_write_data(qcam->pport, data); idata = qcam_read_data(qcam); if (data != idata) { - printk(KERN_WARNING "cqcam: sent %x but received %x\n", data, + v4l2_warn(v4l2_dev, "sent %x but received %x\n", data, idata); return 1; } return 0; } -static inline int qcam_set(struct qcam_device *qcam, unsigned int cmd, unsigned int data) +static inline int qcam_set(struct qcam *qcam, unsigned int cmd, unsigned int data) { if (qcam_write_data(qcam, cmd)) return -1; @@ -182,14 +197,14 @@ static inline int qcam_set(struct qcam_device *qcam, unsigned int cmd, unsigned return 0; } -static inline int qcam_get(struct qcam_device *qcam, unsigned int cmd) +static inline int qcam_get(struct qcam *qcam, unsigned int cmd) { if (qcam_write_data(qcam, cmd)) return -1; return qcam_read_data(qcam); } -static int qc_detect(struct qcam_device *qcam) +static int qc_detect(struct qcam *qcam) { unsigned int stat, ostat, i, count = 0; @@ -246,7 +261,7 @@ static int qc_detect(struct qcam_device *qcam) return 0; } -static void qc_reset(struct qcam_device *qcam) +static void qc_reset(struct qcam *qcam) { parport_write_control(qcam->pport, 0xc); parport_write_control(qcam->pport, 0x8); @@ -258,55 +273,55 @@ static void qc_reset(struct qcam_device *qcam) /* Reset the QuickCam and program for brightness, contrast, * white-balance, and resolution. */ -static void qc_setup(struct qcam_device *q) +static void qc_setup(struct qcam *qcam) { - qc_reset(q); + qc_reset(qcam); /* Set the brightness. */ - qcam_set(q, 11, q->brightness); + qcam_set(qcam, 11, qcam->brightness); /* Set the height and width. These refer to the actual CCD area *before* applying the selected decimation. */ - qcam_set(q, 17, q->ccd_height); - qcam_set(q, 19, q->ccd_width / 2); + qcam_set(qcam, 17, qcam->ccd_height); + qcam_set(qcam, 19, qcam->ccd_width / 2); /* Set top and left. */ - qcam_set(q, 0xd, q->top); - qcam_set(q, 0xf, q->left); + qcam_set(qcam, 0xd, qcam->top); + qcam_set(qcam, 0xf, qcam->left); /* Set contrast and white balance. */ - qcam_set(q, 0x19, q->contrast); - qcam_set(q, 0x1f, q->whitebal); + qcam_set(qcam, 0x19, qcam->contrast); + qcam_set(qcam, 0x1f, qcam->whitebal); /* Set the speed. */ - qcam_set(q, 45, 2); + qcam_set(qcam, 45, 2); } /* Read some bytes from the camera and put them in the buffer. nbytes should be a multiple of 3, because bidirectional mode gives us three bytes at a time. */ -static unsigned int qcam_read_bytes(struct qcam_device *q, unsigned char *buf, unsigned int nbytes) +static unsigned int qcam_read_bytes(struct qcam *qcam, unsigned char *buf, unsigned int nbytes) { unsigned int bytes = 0; - qcam_set_ack(q, 0); - if (q->bidirectional) { + qcam_set_ack(qcam, 0); + if (qcam->bidirectional) { /* It's a bidirectional port */ while (bytes < nbytes) { unsigned int lo1, hi1, lo2, hi2; unsigned char r, g, b; - if (qcam_await_ready2(q, 1)) + if (qcam_await_ready2(qcam, 1)) return bytes; - lo1 = parport_read_data(q->pport) >> 1; - hi1 = ((parport_read_status(q->pport) >> 3) & 0x1f) ^ 0x10; - qcam_set_ack(q, 1); - if (qcam_await_ready2(q, 0)) + lo1 = parport_read_data(qcam->pport) >> 1; + hi1 = ((parport_read_status(qcam->pport) >> 3) & 0x1f) ^ 0x10; + qcam_set_ack(qcam, 1); + if (qcam_await_ready2(qcam, 0)) return bytes; - lo2 = parport_read_data(q->pport) >> 1; - hi2 = ((parport_read_status(q->pport) >> 3) & 0x1f) ^ 0x10; - qcam_set_ack(q, 0); + lo2 = parport_read_data(qcam->pport) >> 1; + hi2 = ((parport_read_status(qcam->pport) >> 3) & 0x1f) ^ 0x10; + qcam_set_ack(qcam, 0); r = lo1 | ((hi1 & 1) << 7); g = ((hi1 & 0x1e) << 3) | ((hi2 & 0x1e) >> 1); b = lo2 | ((hi2 & 1) << 7); @@ -328,14 +343,14 @@ static unsigned int qcam_read_bytes(struct qcam_device *q, unsigned char *buf, u while (bytes < nbytes) { unsigned int hi, lo; - if (qcam_await_ready1(q, 1)) + if (qcam_await_ready1(qcam, 1)) return bytes; - hi = (parport_read_status(q->pport) & 0xf0); - qcam_set_ack(q, 1); - if (qcam_await_ready1(q, 0)) + hi = (parport_read_status(qcam->pport) & 0xf0); + qcam_set_ack(qcam, 1); + if (qcam_await_ready1(qcam, 0)) return bytes; - lo = (parport_read_status(q->pport) & 0xf0); - qcam_set_ack(q, 0); + lo = (parport_read_status(qcam->pport) & 0xf0); + qcam_set_ack(qcam, 0); /* flip some bits */ rgb[(i = bytes++ % 3)] = (hi | (lo >> 4)) ^ 0x88; if (i >= 2) { @@ -361,10 +376,11 @@ get_fragment: #define BUFSZ 150 -static long qc_capture(struct qcam_device *q, char __user *buf, unsigned long len) +static long qc_capture(struct qcam *qcam, char __user *buf, unsigned long len) { + struct v4l2_device *v4l2_dev = &qcam->v4l2_dev; unsigned lines, pixelsperline, bitsperxfer; - unsigned int is_bi_dir = q->bidirectional; + unsigned int is_bi_dir = qcam->bidirectional; size_t wantlen, outptr = 0; char tmpbuf[BUFSZ]; @@ -373,10 +389,10 @@ static long qc_capture(struct qcam_device *q, char __user *buf, unsigned long le /* Wait for camera to become ready */ for (;;) { - int i = qcam_get(q, 41); + int i = qcam_get(qcam, 41); if (i == -1) { - qc_setup(q); + qc_setup(qcam); return -EIO; } if ((i & 0x80) == 0) @@ -384,25 +400,25 @@ static long qc_capture(struct qcam_device *q, char __user *buf, unsigned long le schedule(); } - if (qcam_set(q, 7, (q->mode | (is_bi_dir ? 1 : 0)) + 1)) + if (qcam_set(qcam, 7, (qcam->mode | (is_bi_dir ? 1 : 0)) + 1)) return -EIO; - lines = q->height; - pixelsperline = q->width; + lines = qcam->height; + pixelsperline = qcam->width; bitsperxfer = (is_bi_dir) ? 24 : 8; if (is_bi_dir) { /* Turn the port around */ - parport_data_reverse(q->pport); + parport_data_reverse(qcam->pport); mdelay(3); - qcam_set_ack(q, 0); - if (qcam_await_ready1(q, 1)) { - qc_setup(q); + qcam_set_ack(qcam, 0); + if (qcam_await_ready1(qcam, 1)) { + qc_setup(qcam); return -EIO; } - qcam_set_ack(q, 1); - if (qcam_await_ready1(q, 0)) { - qc_setup(q); + qcam_set_ack(qcam, 1); + if (qcam_await_ready1(qcam, 0)) { + qc_setup(qcam); return -EIO; } } @@ -413,7 +429,7 @@ static long qc_capture(struct qcam_device *q, char __user *buf, unsigned long le size_t t, s; s = (wantlen > BUFSZ) ? BUFSZ : wantlen; - t = qcam_read_bytes(q, tmpbuf, s); + t = qcam_read_bytes(qcam, tmpbuf, s); if (outptr < len) { size_t sz = len - outptr; @@ -432,10 +448,10 @@ static long qc_capture(struct qcam_device *q, char __user *buf, unsigned long le len = outptr; if (wantlen) { - printk(KERN_ERR "qcam: short read.\n"); + v4l2_err(v4l2_dev, "short read.\n"); if (is_bi_dir) - parport_data_forward(q->pport); - qc_setup(q); + parport_data_forward(qcam->pport); + qc_setup(qcam); return len; } @@ -443,49 +459,49 @@ static long qc_capture(struct qcam_device *q, char __user *buf, unsigned long le int l; do { - l = qcam_read_bytes(q, tmpbuf, 3); + l = qcam_read_bytes(qcam, tmpbuf, 3); cond_resched(); } while (l && (tmpbuf[0] == 0x7e || tmpbuf[1] == 0x7e || tmpbuf[2] == 0x7e)); if (force_rgb) { if (tmpbuf[0] != 0xe || tmpbuf[1] != 0x0 || tmpbuf[2] != 0xf) - printk(KERN_ERR "qcam: bad EOF\n"); + v4l2_err(v4l2_dev, "bad EOF\n"); } else { if (tmpbuf[0] != 0xf || tmpbuf[1] != 0x0 || tmpbuf[2] != 0xe) - printk(KERN_ERR "qcam: bad EOF\n"); + v4l2_err(v4l2_dev, "bad EOF\n"); } - qcam_set_ack(q, 0); - if (qcam_await_ready1(q, 1)) { - printk(KERN_ERR "qcam: no ack after EOF\n"); - parport_data_forward(q->pport); - qc_setup(q); + qcam_set_ack(qcam, 0); + if (qcam_await_ready1(qcam, 1)) { + v4l2_err(v4l2_dev, "no ack after EOF\n"); + parport_data_forward(qcam->pport); + qc_setup(qcam); return len; } - parport_data_forward(q->pport); + parport_data_forward(qcam->pport); mdelay(3); - qcam_set_ack(q, 1); - if (qcam_await_ready1(q, 0)) { - printk(KERN_ERR "qcam: no ack to port turnaround\n"); - qc_setup(q); + qcam_set_ack(qcam, 1); + if (qcam_await_ready1(qcam, 0)) { + v4l2_err(v4l2_dev, "no ack to port turnaround\n"); + qc_setup(qcam); return len; } } else { int l; do { - l = qcam_read_bytes(q, tmpbuf, 1); + l = qcam_read_bytes(qcam, tmpbuf, 1); cond_resched(); } while (l && tmpbuf[0] == 0x7e); - l = qcam_read_bytes(q, tmpbuf + 1, 2); + l = qcam_read_bytes(qcam, tmpbuf + 1, 2); if (force_rgb) { if (tmpbuf[0] != 0xe || tmpbuf[1] != 0x0 || tmpbuf[2] != 0xf) - printk(KERN_ERR "qcam: bad EOF\n"); + v4l2_err(v4l2_dev, "bad EOF\n"); } else { if (tmpbuf[0] != 0xf || tmpbuf[1] != 0x0 || tmpbuf[2] != 0xe) - printk(KERN_ERR "qcam: bad EOF\n"); + v4l2_err(v4l2_dev, "bad EOF\n"); } } - qcam_write_data(q, 0); + qcam_write_data(qcam, 0); return len; } @@ -493,184 +509,202 @@ static long qc_capture(struct qcam_device *q, char __user *buf, unsigned long le * Video4linux interfacing */ -static long qcam_do_ioctl(struct file *file, unsigned int cmd, void *arg) +static int qcam_querycap(struct file *file, void *priv, + struct v4l2_capability *vcap) { - struct video_device *dev = video_devdata(file); - struct qcam_device *qcam = (struct qcam_device *)dev; + struct qcam *qcam = video_drvdata(file); - switch (cmd) { - case VIDIOCGCAP: - { - struct video_capability *b = arg; + strlcpy(vcap->driver, qcam->v4l2_dev.name, sizeof(vcap->driver)); + strlcpy(vcap->card, "Color Quickcam", sizeof(vcap->card)); + strlcpy(vcap->bus_info, "parport", sizeof(vcap->bus_info)); + vcap->version = KERNEL_VERSION(0, 0, 3); + vcap->capabilities = V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_READWRITE; + return 0; +} - strcpy(b->name, "Quickcam"); - b->type = VID_TYPE_CAPTURE | VID_TYPE_SCALES; - b->channels = 1; - b->audios = 0; - b->maxwidth = 320; - b->maxheight = 240; - b->minwidth = 80; - b->minheight = 60; - return 0; - } - case VIDIOCGCHAN: - { - struct video_channel *v = arg; - - if (v->channel != 0) - return -EINVAL; - v->flags = 0; - v->tuners = 0; - /* Good question.. its composite or SVHS so.. */ - v->type = VIDEO_TYPE_CAMERA; - strcpy(v->name, "Camera"); - return 0; - } - case VIDIOCSCHAN: - { - struct video_channel *v = arg; +static int qcam_enum_input(struct file *file, void *fh, struct v4l2_input *vin) +{ + if (vin->index > 0) + return -EINVAL; + strlcpy(vin->name, "Camera", sizeof(vin->name)); + vin->type = V4L2_INPUT_TYPE_CAMERA; + vin->audioset = 0; + vin->tuner = 0; + vin->std = 0; + vin->status = 0; + return 0; +} - if (v->channel != 0) - return -EINVAL; - return 0; - } - case VIDIOCGTUNER: - { - struct video_tuner *v = arg; - - if (v->tuner) - return -EINVAL; - memset(v, 0, sizeof(*v)); - strcpy(v->name, "Format"); - v->mode = VIDEO_MODE_AUTO; - return 0; +static int qcam_g_input(struct file *file, void *fh, unsigned int *inp) +{ + *inp = 0; + return 0; +} + +static int qcam_s_input(struct file *file, void *fh, unsigned int inp) +{ + return (inp > 0) ? -EINVAL : 0; +} + +static int qcam_queryctrl(struct file *file, void *priv, + struct v4l2_queryctrl *qc) +{ + switch (qc->id) { + case V4L2_CID_BRIGHTNESS: + return v4l2_ctrl_query_fill(qc, 0, 255, 1, 240); + case V4L2_CID_CONTRAST: + return v4l2_ctrl_query_fill(qc, 0, 255, 1, 192); + case V4L2_CID_GAMMA: + return v4l2_ctrl_query_fill(qc, 0, 255, 1, 128); } - case VIDIOCSTUNER: - { - struct video_tuner *v = arg; - - if (v->tuner) - return -EINVAL; - if (v->mode != VIDEO_MODE_AUTO) - return -EINVAL; - return 0; + return -EINVAL; +} + +static int qcam_g_ctrl(struct file *file, void *priv, + struct v4l2_control *ctrl) +{ + struct qcam *qcam = video_drvdata(file); + int ret = 0; + + switch (ctrl->id) { + case V4L2_CID_BRIGHTNESS: + ctrl->value = qcam->brightness; + break; + case V4L2_CID_CONTRAST: + ctrl->value = qcam->contrast; + break; + case V4L2_CID_GAMMA: + ctrl->value = qcam->whitebal; + break; + default: + ret = -EINVAL; + break; } - case VIDIOCGPICT: - { - struct video_picture *p = arg; - - p->colour = 0x8000; - p->hue = 0x8000; - p->brightness = qcam->brightness << 8; - p->contrast = qcam->contrast << 8; - p->whiteness = qcam->whitebal << 8; - p->depth = 24; - p->palette = VIDEO_PALETTE_RGB24; - return 0; + return ret; +} + +static int qcam_s_ctrl(struct file *file, void *priv, + struct v4l2_control *ctrl) +{ + struct qcam *qcam = video_drvdata(file); + int ret = 0; + + mutex_lock(&qcam->lock); + switch (ctrl->id) { + case V4L2_CID_BRIGHTNESS: + qcam->brightness = ctrl->value; + break; + case V4L2_CID_CONTRAST: + qcam->contrast = ctrl->value; + break; + case V4L2_CID_GAMMA: + qcam->whitebal = ctrl->value; + break; + default: + ret = -EINVAL; + break; } - case VIDIOCSPICT: - { - struct video_picture *p = arg; - - /* - * Sanity check args - */ - if (p->depth != 24 || p->palette != VIDEO_PALETTE_RGB24) - return -EINVAL; - - /* - * Now load the camera. - */ - qcam->brightness = p->brightness >> 8; - qcam->contrast = p->contrast >> 8; - qcam->whitebal = p->whiteness >> 8; - - mutex_lock(&qcam->lock); + if (ret == 0) { parport_claim_or_block(qcam->pdev); qc_setup(qcam); parport_release(qcam->pdev); - mutex_unlock(&qcam->lock); - return 0; } - case VIDIOCSWIN: - { - struct video_window *vw = arg; - - if (vw->flags) - return -EINVAL; - if (vw->clipcount) - return -EINVAL; - if (vw->height < 60 || vw->height > 240) - return -EINVAL; - if (vw->width < 80 || vw->width > 320) - return -EINVAL; - - qcam->width = 80; - qcam->height = 60; - qcam->mode = QC_DECIMATION_4; + mutex_unlock(&qcam->lock); + return ret; +} - if (vw->width >= 160 && vw->height >= 120) { - qcam->width = 160; - qcam->height = 120; - qcam->mode = QC_DECIMATION_2; - } - if (vw->width >= 320 && vw->height >= 240) { - qcam->width = 320; - qcam->height = 240; - qcam->mode = QC_DECIMATION_1; - } - qcam->mode |= QC_MILLIONS; -#if 0 - if (vw->width >= 640 && vw->height >= 480) { - qcam->width = 640; - qcam->height = 480; - qcam->mode = QC_BILLIONS | QC_DECIMATION_1; - } -#endif - /* Ok we figured out what to use from our - wide choice */ - mutex_lock(&qcam->lock); - parport_claim_or_block(qcam->pdev); - qc_setup(qcam); - parport_release(qcam->pdev); - mutex_unlock(&qcam->lock); - return 0; - } - case VIDIOCGWIN: - { - struct video_window *vw = arg; - memset(vw, 0, sizeof(*vw)); - vw->width = qcam->width; - vw->height = qcam->height; - return 0; +static int qcam_g_fmt_vid_cap(struct file *file, void *fh, struct v4l2_format *fmt) +{ + struct qcam *qcam = video_drvdata(file); + struct v4l2_pix_format *pix = &fmt->fmt.pix; + + pix->width = qcam->width; + pix->height = qcam->height; + pix->pixelformat = V4L2_PIX_FMT_RGB24; + pix->field = V4L2_FIELD_NONE; + pix->bytesperline = 3 * qcam->width; + pix->sizeimage = 3 * qcam->width * qcam->height; + /* Just a guess */ + pix->colorspace = V4L2_COLORSPACE_SRGB; + return 0; +} + +static int qcam_try_fmt_vid_cap(struct file *file, void *fh, struct v4l2_format *fmt) +{ + struct v4l2_pix_format *pix = &fmt->fmt.pix; + + if (pix->height < 60 || pix->width < 80) { + pix->height = 60; + pix->width = 80; + } else if (pix->height < 120 || pix->width < 160) { + pix->height = 120; + pix->width = 160; + } else { + pix->height = 240; + pix->width = 320; } - case VIDIOCKEY: - return 0; - case VIDIOCCAPTURE: - case VIDIOCGFBUF: - case VIDIOCSFBUF: - case VIDIOCGFREQ: - case VIDIOCSFREQ: - case VIDIOCGAUDIO: - case VIDIOCSAUDIO: - return -EINVAL; + pix->pixelformat = V4L2_PIX_FMT_RGB24; + pix->field = V4L2_FIELD_NONE; + pix->bytesperline = 3 * pix->width; + pix->sizeimage = 3 * pix->width * pix->height; + /* Just a guess */ + pix->colorspace = V4L2_COLORSPACE_SRGB; + return 0; +} + +static int qcam_s_fmt_vid_cap(struct file *file, void *fh, struct v4l2_format *fmt) +{ + struct qcam *qcam = video_drvdata(file); + struct v4l2_pix_format *pix = &fmt->fmt.pix; + int ret = qcam_try_fmt_vid_cap(file, fh, fmt); + + if (ret) + return ret; + switch (pix->height) { + case 60: + qcam->mode = QC_DECIMATION_4; + break; + case 120: + qcam->mode = QC_DECIMATION_2; + break; default: - return -ENOIOCTLCMD; + qcam->mode = QC_DECIMATION_1; + break; } + + mutex_lock(&qcam->lock); + qcam->mode |= QC_MILLIONS; + qcam->height = pix->height; + qcam->width = pix->width; + parport_claim_or_block(qcam->pdev); + qc_setup(qcam); + parport_release(qcam->pdev); + mutex_unlock(&qcam->lock); return 0; } -static long qcam_ioctl(struct file *file, - unsigned int cmd, unsigned long arg) +static int qcam_enum_fmt_vid_cap(struct file *file, void *fh, struct v4l2_fmtdesc *fmt) { - return video_usercopy(file, cmd, arg, qcam_do_ioctl); + static struct v4l2_fmtdesc formats[] = { + { 0, 0, 0, + "RGB 8:8:8", V4L2_PIX_FMT_RGB24, + { 0, 0, 0, 0 } + }, + }; + enum v4l2_buf_type type = fmt->type; + + if (fmt->index > 0) + return -EINVAL; + + *fmt = formats[fmt->index]; + fmt->type = type; + return 0; } static ssize_t qcam_read(struct file *file, char __user *buf, size_t count, loff_t *ppos) { - struct video_device *v = video_devdata(file); - struct qcam_device *qcam = (struct qcam_device *)v; + struct qcam *qcam = video_drvdata(file); int len; mutex_lock(&qcam->lock); @@ -682,81 +716,80 @@ static ssize_t qcam_read(struct file *file, char __user *buf, return len; } -static int qcam_exclusive_open(struct file *file) -{ - struct video_device *dev = video_devdata(file); - struct qcam_device *qcam = (struct qcam_device *)dev; - - return test_and_set_bit(0, &qcam->in_use) ? -EBUSY : 0; -} - -static int qcam_exclusive_release(struct file *file) -{ - struct video_device *dev = video_devdata(file); - struct qcam_device *qcam = (struct qcam_device *)dev; - - clear_bit(0, &qcam->in_use); - return 0; -} - -/* video device template */ static const struct v4l2_file_operations qcam_fops = { .owner = THIS_MODULE, - .open = qcam_exclusive_open, - .release = qcam_exclusive_release, - .ioctl = qcam_ioctl, + .ioctl = video_ioctl2, .read = qcam_read, }; -static struct video_device qcam_template = { - .name = "Colour QuickCam", - .fops = &qcam_fops, - .release = video_device_release_empty, +static const struct v4l2_ioctl_ops qcam_ioctl_ops = { + .vidioc_querycap = qcam_querycap, + .vidioc_g_input = qcam_g_input, + .vidioc_s_input = qcam_s_input, + .vidioc_enum_input = qcam_enum_input, + .vidioc_queryctrl = qcam_queryctrl, + .vidioc_g_ctrl = qcam_g_ctrl, + .vidioc_s_ctrl = qcam_s_ctrl, + .vidioc_enum_fmt_vid_cap = qcam_enum_fmt_vid_cap, + .vidioc_g_fmt_vid_cap = qcam_g_fmt_vid_cap, + .vidioc_s_fmt_vid_cap = qcam_s_fmt_vid_cap, + .vidioc_try_fmt_vid_cap = qcam_try_fmt_vid_cap, }; /* Initialize the QuickCam driver control structure. */ -static struct qcam_device *qcam_init(struct parport *port) +static struct qcam *qcam_init(struct parport *port) { - struct qcam_device *q; + struct qcam *qcam; + struct v4l2_device *v4l2_dev; - q = kmalloc(sizeof(struct qcam_device), GFP_KERNEL); - if (q == NULL) + qcam = kzalloc(sizeof(*qcam), GFP_KERNEL); + if (qcam == NULL) return NULL; - q->pport = port; - q->pdev = parport_register_device(port, "c-qcam", NULL, NULL, + v4l2_dev = &qcam->v4l2_dev; + strlcpy(v4l2_dev->name, "c-qcam", sizeof(v4l2_dev->name)); + + if (v4l2_device_register(NULL, v4l2_dev) < 0) { + v4l2_err(v4l2_dev, "Could not register v4l2_device\n"); + return NULL; + } + + qcam->pport = port; + qcam->pdev = parport_register_device(port, "c-qcam", NULL, NULL, NULL, 0, NULL); - q->bidirectional = (q->pport->modes & PARPORT_MODE_TRISTATE) ? 1 : 0; + qcam->bidirectional = (qcam->pport->modes & PARPORT_MODE_TRISTATE) ? 1 : 0; - if (q->pdev == NULL) { - printk(KERN_ERR "c-qcam: couldn't register for %s.\n", - port->name); - kfree(q); + if (qcam->pdev == NULL) { + v4l2_err(v4l2_dev, "couldn't register for %s.\n", port->name); + kfree(qcam); return NULL; } - memcpy(&q->vdev, &qcam_template, sizeof(qcam_template)); - - mutex_init(&q->lock); - q->width = q->ccd_width = 320; - q->height = q->ccd_height = 240; - q->mode = QC_MILLIONS | QC_DECIMATION_1; - q->contrast = 192; - q->brightness = 240; - q->whitebal = 128; - q->top = 1; - q->left = 14; - return q; + strlcpy(qcam->vdev.name, "Colour QuickCam", sizeof(qcam->vdev.name)); + qcam->vdev.v4l2_dev = v4l2_dev; + qcam->vdev.fops = &qcam_fops; + qcam->vdev.ioctl_ops = &qcam_ioctl_ops; + qcam->vdev.release = video_device_release_empty; + video_set_drvdata(&qcam->vdev, qcam); + + mutex_init(&qcam->lock); + qcam->width = qcam->ccd_width = 320; + qcam->height = qcam->ccd_height = 240; + qcam->mode = QC_MILLIONS | QC_DECIMATION_1; + qcam->contrast = 192; + qcam->brightness = 240; + qcam->whitebal = 128; + qcam->top = 1; + qcam->left = 14; + return qcam; } -static struct qcam_device *qcams[MAX_CAMS]; -static unsigned int num_cams; - static int init_cqcam(struct parport *port) { - struct qcam_device *qcam; + struct qcam *qcam; + struct v4l2_device *v4l2_dev; if (parport[0] != -1) { /* The user gave specific instructions */ @@ -777,6 +810,8 @@ static int init_cqcam(struct parport *port) if (qcam == NULL) return -ENODEV; + v4l2_dev = &qcam->v4l2_dev; + parport_claim_or_block(qcam->pdev); qc_reset(qcam); @@ -793,14 +828,14 @@ static int init_cqcam(struct parport *port) parport_release(qcam->pdev); if (video_register_device(&qcam->vdev, VFL_TYPE_GRABBER, video_nr) < 0) { - printk(KERN_ERR "Unable to register Colour QuickCam on %s\n", + v4l2_err(v4l2_dev, "Unable to register Colour QuickCam on %s\n", qcam->pport->name); parport_unregister_device(qcam->pdev); kfree(qcam); return -ENODEV; } - printk(KERN_INFO "%s: Colour QuickCam found on %s\n", + v4l2_info(v4l2_dev, "%s: Colour QuickCam found on %s\n", video_device_node_name(&qcam->vdev), qcam->pport->name); qcams[num_cams++] = qcam; @@ -808,7 +843,7 @@ static int init_cqcam(struct parport *port) return 0; } -static void close_cqcam(struct qcam_device *qcam) +static void close_cqcam(struct qcam *qcam) { video_unregister_device(&qcam->vdev); parport_unregister_device(qcam->pdev); @@ -833,7 +868,7 @@ static struct parport_driver cqcam_driver = { static int __init cqcam_init(void) { - printk(BANNER "\n"); + printk(KERN_INFO BANNER "\n"); return parport_register_driver(&cqcam_driver); } @@ -852,14 +887,5 @@ MODULE_AUTHOR("Philip Blundell <philb@gnu.org>"); MODULE_DESCRIPTION(BANNER); MODULE_LICENSE("GPL"); -/* FIXME: parport=auto would never have worked, surely? --RR */ -MODULE_PARM_DESC(parport, "parport=<auto|n[,n]...> for port detection method\n" - "probe=<0|1|2> for camera detection method\n" - "force_rgb=<0|1> for RGB data format (default BGR)"); -module_param_array(parport, int, NULL, 0); -module_param(probe, int, 0); -module_param(force_rgb, bool, 0); -module_param(video_nr, int, 0); - module_init(cqcam_init); module_exit(cqcam_cleanup); |