From 51224aa436238940e09e479db9c600cecfbebd20 Mon Sep 17 00:00:00 2001 From: Hans Verkuil Date: Mon, 22 Mar 2010 04:33:56 -0300 Subject: [PATCH] V4L/DVB: c-qcam: coding style cleanup Clean up the coding style before we convert this driver to V4L2. Signed-off-by: Hans Verkuil Signed-off-by: Mauro Carvalho Chehab --- drivers/media/video/c-qcam.c | 483 +++++++++++++++++++++---------------------- 1 file changed, 237 insertions(+), 246 deletions(-) diff --git a/drivers/media/video/c-qcam.c b/drivers/media/video/c-qcam.c index e2cbeba..8f1dd88 100644 --- a/drivers/media/video/c-qcam.c +++ b/drivers/media/video/c-qcam.c @@ -79,17 +79,17 @@ static inline void qcam_set_ack(struct qcam_device *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); + parport_frob_control(qcam->pport, 8, i ? 8 : 0); } static inline unsigned int qcam_ready1(struct qcam_device *qcam) { - return (parport_read_status(qcam->pport) & 0x8)?1:0; + return (parport_read_status(qcam->pport) & 0x8) ? 1 : 0; } static inline unsigned int qcam_ready2(struct qcam_device *qcam) { - return (parport_read_data(qcam->pport) & 0x1)?1:0; + return (parport_read_data(qcam->pport) & 0x1) ? 1 : 0; } static unsigned int qcam_await_ready1(struct qcam_device *qcam, @@ -99,14 +99,13 @@ static unsigned int qcam_await_ready1(struct qcam_device *qcam, unsigned int i; for (oldjiffies = jiffies; - time_before(jiffies, oldjiffies + msecs_to_jiffies(40)); ) + 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++) - { + for (i = 0; i < 50; i++) { if (qcam_ready1(qcam) == value) return 0; msleep_interruptible(100); @@ -125,14 +124,13 @@ static unsigned int qcam_await_ready2(struct qcam_device *qcam, int value) unsigned int i; for (oldjiffies = jiffies; - time_before(jiffies, oldjiffies + msecs_to_jiffies(40)); ) + 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++) - { + for (i = 0; i < 50; i++) { if (qcam_ready2(qcam) == value) return 0; msleep_interruptible(100); @@ -149,22 +147,25 @@ static unsigned int qcam_await_ready2(struct qcam_device *qcam, int value) static int qcam_read_data(struct qcam_device *qcam) { unsigned int idata; + qcam_set_ack(qcam, 0); - if (qcam_await_ready1(qcam, 1)) return -1; + 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); + if (qcam_await_ready1(qcam, 0)) + return -1; + idata |= parport_read_status(qcam->pport) >> 4; return idata; } static int qcam_write_data(struct qcam_device *qcam, unsigned int data) { unsigned int idata; + parport_write_data(qcam->pport, data); idata = qcam_read_data(qcam); - if (data != idata) - { + if (data != idata) { printk(KERN_WARNING "cqcam: sent %x but received %x\n", data, idata); return 1; @@ -212,13 +213,12 @@ static int qc_detect(struct qcam_device *qcam) /* look for a heartbeat */ ostat = stat = parport_read_status(qcam->pport); - for (i=0; i<250; i++) - { + for (i = 0; i < 250; i++) { mdelay(1); stat = parport_read_status(qcam->pport); - if (ostat != stat) - { - if (++count >= 3) return 1; + if (ostat != stat) { + if (++count >= 3) + return 1; ostat = stat; } } @@ -232,13 +232,12 @@ static int qc_detect(struct qcam_device *qcam) count = 0; ostat = stat = parport_read_status(qcam->pport); - for (i=0; i<250; i++) - { + for (i = 0; i < 250; i++) { mdelay(1); stat = parport_read_status(qcam->pport); - if (ostat != stat) - { - if (++count >= 3) return 1; + if (ostat != stat) { + if (++count >= 3) + return 1; ostat = stat; } } @@ -263,7 +262,7 @@ static void qc_setup(struct qcam_device *q) { qc_reset(q); - /* Set the brightness. */ + /* Set the brightness. */ qcam_set(q, 11, q->brightness); /* Set the height and width. These refer to the actual @@ -292,25 +291,25 @@ static unsigned int qcam_read_bytes(struct qcam_device *q, unsigned char *buf, u unsigned int bytes = 0; qcam_set_ack(q, 0); - if (q->bidirectional) - { + if (q->bidirectional) { /* It's a bidirectional port */ - while (bytes < nbytes) - { + while (bytes < nbytes) { unsigned int lo1, hi1, lo2, hi2; unsigned char r, g, b; - if (qcam_await_ready2(q, 1)) return bytes; + if (qcam_await_ready2(q, 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)) return bytes; + if (qcam_await_ready2(q, 0)) + return bytes; lo2 = parport_read_data(q->pport) >> 1; hi2 = ((parport_read_status(q->pport) >> 3) & 0x1f) ^ 0x10; qcam_set_ack(q, 0); - r = (lo1 | ((hi1 & 1)<<7)); - g = ((hi1 & 0x1e)<<3) | ((hi2 & 0x1e)>>1); - b = (lo2 | ((hi2 & 1)<<7)); + 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; @@ -321,21 +320,20 @@ static unsigned int qcam_read_bytes(struct qcam_device *q, unsigned char *buf, u buf[bytes++] = r; } } - } - else - { + } else { /* It's a unidirectional port */ int i = 0, n = bytes; unsigned char rgb[3]; - while (bytes < nbytes) - { + while (bytes < nbytes) { unsigned int hi, lo; - if (qcam_await_ready1(q, 1)) return bytes; + if (qcam_await_ready1(q, 1)) + return bytes; hi = (parport_read_status(q->pport) & 0xf0); qcam_set_ack(q, 1); - if (qcam_await_ready1(q, 0)) return bytes; + if (qcam_await_ready1(q, 0)) + return bytes; lo = (parport_read_status(q->pport) & 0xf0); qcam_set_ack(q, 0); /* flip some bits */ @@ -374,28 +372,26 @@ static long qc_capture(struct qcam_device *q, char __user *buf, unsigned long le return -EFAULT; /* Wait for camera to become ready */ - for (;;) - { + for (;;) { int i = qcam_get(q, 41); + if (i == -1) { qc_setup(q); return -EIO; } if ((i & 0x80) == 0) break; - else - schedule(); + schedule(); } - if (qcam_set(q, 7, (q->mode | (is_bi_dir?1:0)) + 1)) + if (qcam_set(q, 7, (q->mode | (is_bi_dir ? 1 : 0)) + 1)) return -EIO; lines = q->height; pixelsperline = q->width; bitsperxfer = (is_bi_dir) ? 24 : 8; - if (is_bi_dir) - { + if (is_bi_dir) { /* Turn the port around */ parport_data_reverse(q->pport); mdelay(3); @@ -413,16 +409,17 @@ static long qc_capture(struct qcam_device *q, char __user *buf, unsigned long le wantlen = lines * pixelsperline * 24 / 8; - while (wantlen) - { + while (wantlen) { size_t t, s; - s = (wantlen > BUFSZ)?BUFSZ:wantlen; + + s = (wantlen > BUFSZ) ? BUFSZ : wantlen; t = qcam_read_bytes(q, tmpbuf, s); - if (outptr < len) - { + if (outptr < len) { size_t sz = len - outptr; - if (sz > t) sz = t; - if (__copy_to_user(buf+outptr, tmpbuf, sz)) + + if (sz > t) + sz = t; + if (__copy_to_user(buf + outptr, tmpbuf, sz)) break; outptr += sz; } @@ -434,33 +431,31 @@ static long qc_capture(struct qcam_device *q, char __user *buf, unsigned long le len = outptr; - if (wantlen) - { - printk("qcam: short read.\n"); + if (wantlen) { + printk(KERN_ERR "qcam: short read.\n"); if (is_bi_dir) parport_data_forward(q->pport); qc_setup(q); return len; } - if (is_bi_dir) - { + if (is_bi_dir) { int l; + do { l = qcam_read_bytes(q, 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("qcam: bad EOF\n"); + printk(KERN_ERR "qcam: bad EOF\n"); } else { if (tmpbuf[0] != 0xf || tmpbuf[1] != 0x0 || tmpbuf[2] != 0xe) - printk("qcam: bad EOF\n"); + printk(KERN_ERR "qcam: bad EOF\n"); } qcam_set_ack(q, 0); - if (qcam_await_ready1(q, 1)) - { - printk("qcam: no ack after EOF\n"); + if (qcam_await_ready1(q, 1)) { + printk(KERN_ERR "qcam: no ack after EOF\n"); parport_data_forward(q->pport); qc_setup(q); return len; @@ -468,27 +463,25 @@ static long qc_capture(struct qcam_device *q, char __user *buf, unsigned long le parport_data_forward(q->pport); mdelay(3); qcam_set_ack(q, 1); - if (qcam_await_ready1(q, 0)) - { - printk("qcam: no ack to port turnaround\n"); + if (qcam_await_ready1(q, 0)) { + printk(KERN_ERR "qcam: no ack to port turnaround\n"); qc_setup(q); return len; } - } - else - { + } else { int l; + do { l = qcam_read_bytes(q, tmpbuf, 1); cond_resched(); } while (l && tmpbuf[0] == 0x7e); - l = qcam_read_bytes(q, tmpbuf+1, 2); + l = qcam_read_bytes(q, tmpbuf + 1, 2); if (force_rgb) { if (tmpbuf[0] != 0xe || tmpbuf[1] != 0x0 || tmpbuf[2] != 0xf) - printk("qcam: bad EOF\n"); + printk(KERN_ERR "qcam: bad EOF\n"); } else { if (tmpbuf[0] != 0xf || tmpbuf[1] != 0x0 || tmpbuf[2] != 0xe) - printk("qcam: bad EOF\n"); + printk(KERN_ERR "qcam: bad EOF\n"); } } @@ -503,164 +496,166 @@ static long qc_capture(struct qcam_device *q, char __user *buf, unsigned long le static long qcam_do_ioctl(struct file *file, unsigned int cmd, void *arg) { struct video_device *dev = video_devdata(file); - struct qcam_device *qcam=(struct qcam_device *)dev; + struct qcam_device *qcam = (struct qcam_device *)dev; - switch(cmd) + switch (cmd) { + case VIDIOCGCAP: { - case VIDIOCGCAP: - { - struct video_capability *b = arg; - strcpy(b->name, "Quickcam"); - b->type = VID_TYPE_CAPTURE|VID_TYPE_SCALES; - b->channels = 1; - b->audios = 0; - b->maxwidth = 320; - b->maxheight = 240; - b->minwidth = 80; - b->minheight = 60; - return 0; - } - case VIDIOCGCHAN: - { - struct video_channel *v = arg; - if(v->channel!=0) - return -EINVAL; - v->flags=0; - v->tuners=0; - /* Good question.. its composite or SVHS so.. */ - v->type = VIDEO_TYPE_CAMERA; - strcpy(v->name, "Camera"); - return 0; - } - case VIDIOCSCHAN: - { - struct video_channel *v = arg; - if(v->channel!=0) - return -EINVAL; - return 0; - } - case VIDIOCGTUNER: - { - struct video_tuner *v = arg; - if(v->tuner) - return -EINVAL; - memset(v,0,sizeof(*v)); - strcpy(v->name, "Format"); - v->mode = VIDEO_MODE_AUTO; - return 0; - } - case VIDIOCSTUNER: - { - struct video_tuner *v = arg; - if(v->tuner) - return -EINVAL; - if(v->mode!=VIDEO_MODE_AUTO) - return -EINVAL; - return 0; - } - case VIDIOCGPICT: - { - struct video_picture *p = arg; - p->colour=0x8000; - p->hue=0x8000; - p->brightness=qcam->brightness<<8; - p->contrast=qcam->contrast<<8; - p->whiteness=qcam->whitebal<<8; - p->depth=24; - p->palette=VIDEO_PALETTE_RGB24; - return 0; + struct video_capability *b = arg; + + strcpy(b->name, "Quickcam"); + b->type = VID_TYPE_CAPTURE | VID_TYPE_SCALES; + b->channels = 1; + b->audios = 0; + b->maxwidth = 320; + b->maxheight = 240; + b->minwidth = 80; + b->minheight = 60; + return 0; + } + case VIDIOCGCHAN: + { + struct video_channel *v = arg; + + if (v->channel != 0) + return -EINVAL; + v->flags = 0; + v->tuners = 0; + /* Good question.. its composite or SVHS so.. */ + v->type = VIDEO_TYPE_CAMERA; + strcpy(v->name, "Camera"); + return 0; + } + case VIDIOCSCHAN: + { + struct video_channel *v = arg; + + if (v->channel != 0) + return -EINVAL; + return 0; + } + case VIDIOCGTUNER: + { + struct video_tuner *v = arg; + + if (v->tuner) + return -EINVAL; + memset(v, 0, sizeof(*v)); + strcpy(v->name, "Format"); + v->mode = VIDEO_MODE_AUTO; + return 0; + } + case VIDIOCSTUNER: + { + struct video_tuner *v = arg; + + if (v->tuner) + return -EINVAL; + if (v->mode != VIDEO_MODE_AUTO) + return -EINVAL; + return 0; + } + case VIDIOCGPICT: + { + struct video_picture *p = arg; + + p->colour = 0x8000; + p->hue = 0x8000; + p->brightness = qcam->brightness << 8; + p->contrast = qcam->contrast << 8; + p->whiteness = qcam->whitebal << 8; + p->depth = 24; + p->palette = VIDEO_PALETTE_RGB24; + return 0; + } + case VIDIOCSPICT: + { + struct video_picture *p = arg; + + /* + * Sanity check args + */ + if (p->depth != 24 || p->palette != VIDEO_PALETTE_RGB24) + return -EINVAL; + + /* + * Now load the camera. + */ + qcam->brightness = p->brightness >> 8; + qcam->contrast = p->contrast >> 8; + qcam->whitebal = p->whiteness >> 8; + + mutex_lock(&qcam->lock); + parport_claim_or_block(qcam->pdev); + qc_setup(qcam); + parport_release(qcam->pdev); + mutex_unlock(&qcam->lock); + return 0; + } + case VIDIOCSWIN: + { + struct video_window *vw = arg; + + if (vw->flags) + return -EINVAL; + if (vw->clipcount) + return -EINVAL; + if (vw->height < 60 || vw->height > 240) + return -EINVAL; + if (vw->width < 80 || vw->width > 320) + return -EINVAL; + + qcam->width = 80; + qcam->height = 60; + qcam->mode = QC_DECIMATION_4; + + if (vw->width >= 160 && vw->height >= 120) { + qcam->width = 160; + qcam->height = 120; + qcam->mode = QC_DECIMATION_2; } - case VIDIOCSPICT: - { - struct video_picture *p = arg; - - /* - * Sanity check args - */ - if (p->depth != 24 || p->palette != VIDEO_PALETTE_RGB24) - return -EINVAL; - - /* - * Now load the camera. - */ - qcam->brightness = p->brightness>>8; - qcam->contrast = p->contrast>>8; - qcam->whitebal = p->whiteness>>8; - - mutex_lock(&qcam->lock); - parport_claim_or_block(qcam->pdev); - qc_setup(qcam); - parport_release(qcam->pdev); - mutex_unlock(&qcam->lock); - return 0; + if (vw->width >= 320 && vw->height >= 240) { + qcam->width = 320; + qcam->height = 240; + qcam->mode = QC_DECIMATION_1; } - case VIDIOCSWIN: - { - struct video_window *vw = arg; - - if(vw->flags) - return -EINVAL; - if(vw->clipcount) - return -EINVAL; - if(vw->height<60||vw->height>240) - return -EINVAL; - if(vw->width<80||vw->width>320) - return -EINVAL; - - qcam->width = 80; - qcam->height = 60; - qcam->mode = QC_DECIMATION_4; - - if(vw->width>=160 && vw->height>=120) - { - qcam->width = 160; - qcam->height = 120; - qcam->mode = QC_DECIMATION_2; - } - if(vw->width>=320 && vw->height>=240) - { - qcam->width = 320; - qcam->height = 240; - qcam->mode = QC_DECIMATION_1; - } - qcam->mode |= QC_MILLIONS; + 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; + if (vw->width >= 640 && vw->height >= 480) { + qcam->width = 640; + qcam->height = 480; + qcam->mode = QC_BILLIONS | QC_DECIMATION_1; } - case VIDIOCKEY: - return 0; - case VIDIOCCAPTURE: - case VIDIOCGFBUF: - case VIDIOCSFBUF: - case VIDIOCGFREQ: - case VIDIOCSFREQ: - case VIDIOCGAUDIO: - case VIDIOCSAUDIO: - return -EINVAL; - default: - return -ENOIOCTLCMD; +#endif + /* Ok we figured out what to use from our + wide choice */ + mutex_lock(&qcam->lock); + parport_claim_or_block(qcam->pdev); + qc_setup(qcam); + parport_release(qcam->pdev); + mutex_unlock(&qcam->lock); + return 0; + } + case VIDIOCGWIN: + { + struct video_window *vw = arg; + memset(vw, 0, sizeof(*vw)); + vw->width = qcam->width; + vw->height = qcam->height; + return 0; + } + case VIDIOCKEY: + return 0; + case VIDIOCCAPTURE: + case VIDIOCGFBUF: + case VIDIOCSFBUF: + case VIDIOCGFREQ: + case VIDIOCSFREQ: + case VIDIOCGAUDIO: + case VIDIOCSAUDIO: + return -EINVAL; + default: + return -ENOIOCTLCMD; } return 0; } @@ -675,13 +670,13 @@ 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_device *qcam = (struct qcam_device *)v; 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); + len = qc_capture(qcam, buf, count); parport_release(qcam->pdev); mutex_unlock(&qcam->lock); return len; @@ -713,8 +708,7 @@ static const struct v4l2_file_operations qcam_fops = { .read = qcam_read, }; -static struct video_device qcam_template= -{ +static struct video_device qcam_template = { .name = "Colour QuickCam", .fops = &qcam_fops, .release = video_device_release_empty, @@ -727,17 +721,16 @@ static struct qcam_device *qcam_init(struct parport *port) struct qcam_device *q; q = kmalloc(sizeof(struct qcam_device), GFP_KERNEL); - if(q==NULL) + if (q == NULL) return NULL; q->pport = port; q->pdev = parport_register_device(port, "c-qcam", NULL, NULL, NULL, 0, NULL); - q->bidirectional = (q->pport->modes & PARPORT_MODE_TRISTATE)?1:0; + q->bidirectional = (q->pport->modes & PARPORT_MODE_TRISTATE) ? 1 : 0; - if (q->pdev == NULL) - { + if (q->pdev == NULL) { printk(KERN_ERR "c-qcam: couldn't register for %s.\n", port->name); kfree(q); @@ -765,12 +758,11 @@ static int init_cqcam(struct parport *port) { struct qcam_device *qcam; - if (parport[0] != -1) - { + if (parport[0] != -1) { /* The user gave specific instructions */ int i, found = 0; - for (i = 0; i < MAX_CAMS && parport[i] != -1; i++) - { + + for (i = 0; i < MAX_CAMS && parport[i] != -1; i++) { if (parport[0] == port->number) found = 1; } @@ -782,15 +774,14 @@ static int init_cqcam(struct parport *port) return -ENOSPC; qcam = qcam_init(port); - if (qcam==NULL) + if (qcam == NULL) return -ENODEV; parport_claim_or_block(qcam->pdev); qc_reset(qcam); - if (probe && qc_detect(qcam)==0) - { + if (probe && qc_detect(qcam) == 0) { parport_release(qcam->pdev); parport_unregister_device(qcam->pdev); kfree(qcam); @@ -840,14 +831,14 @@ static struct parport_driver cqcam_driver = { .detach = cq_detach, }; -static int __init cqcam_init (void) +static int __init cqcam_init(void) { printk(BANNER "\n"); return parport_register_driver(&cqcam_driver); } -static void __exit cqcam_cleanup (void) +static void __exit cqcam_cleanup(void) { unsigned int i; @@ -862,9 +853,9 @@ MODULE_DESCRIPTION(BANNER); MODULE_LICENSE("GPL"); /* FIXME: parport=auto would never have worked, surely? --RR */ -MODULE_PARM_DESC(parport ,"parport= 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_PARM_DESC(parport, "parport= 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); -- 2.7.4