From ecb73774e5f5b5f635a70073086c3f57b4ca4ae6 Mon Sep 17 00:00:00 2001 From: Mauro Carvalho Chehab Date: Fri, 17 Mar 2006 20:54:32 -0300 Subject: V4L/DVB (3545): Fixed no_overlay option and quirks on saa7134 driver Some chipsets have several problems when pci to pci transfers are activated on overlay mode. the option no_overlay allows disabling such feature of the driver, in favor of keeping the system stable. The default is to use pcipci_fail flag defined on drivers/pci/quirks.c. It also allows the user to override it by forcing disable overlay or forcing enable. Forcing enable may generate PCI transfer corruption, including disk mass corruption, so should be used with care. Added a text description to this option and make messages looks the same at both bttv and saa7134 drivers. Signed-off-by: Mauro Carvalho Chehab diff --git a/drivers/media/video/saa7134/saa7134-core.c b/drivers/media/video/saa7134/saa7134-core.c index be85e0b..58e568d 100644 --- a/drivers/media/video/saa7134/saa7134-core.c +++ b/drivers/media/video/saa7134/saa7134-core.c @@ -66,8 +66,8 @@ static unsigned int latency = UNSET; module_param(latency, int, 0444); MODULE_PARM_DESC(latency,"pci latency timer"); -static int no_overlay=-1; -module_param(no_overlay, int, 0444); +int saa7134_no_overlay=-1; +module_param_named(no_overlay, saa7134_no_overlay, int, 0444); MODULE_PARM_DESC(no_overlay,"allow override overlay default (0 disables, 1 enables)" " [some VIA/SIS chipsets are known to have problem with overlay]"); @@ -843,11 +843,11 @@ static int __devinit saa7134_initdev(struct pci_dev *pci_dev, printk(KERN_INFO "%s: quirk: this driver and your " "chipset may not work together" " in overlay mode.\n",dev->name); - if (!no_overlay) { + if (!saa7134_no_overlay) { printk(KERN_INFO "%s: quirk: overlay " "mode will be disabled.\n", dev->name); - no_overlay = 1; + saa7134_no_overlay = 1; } else { printk(KERN_INFO "%s: quirk: overlay " "mode will be forced. Use this" @@ -957,6 +957,11 @@ static int __devinit saa7134_initdev(struct pci_dev *pci_dev, v4l2_prio_init(&dev->prio); /* register v4l devices */ + if (saa7134_no_overlay <= 0) { + saa7134_video_template.type |= VID_TYPE_OVERLAY; + } else { + printk("bttv: Overlay support disabled.\n"); + } dev->video_dev = vdev_init(dev,&saa7134_video_template,"video"); err = video_register_device(dev->video_dev,VFL_TYPE_GRABBER, video_nr[dev->nr]); diff --git a/drivers/media/video/saa7134/saa7134-video.c b/drivers/media/video/saa7134/saa7134-video.c index 600c3c7..57a11e7 100644 --- a/drivers/media/video/saa7134/saa7134-video.c +++ b/drivers/media/video/saa7134/saa7134-video.c @@ -1462,6 +1462,10 @@ static int saa7134_g_fmt(struct saa7134_dev *dev, struct saa7134_fh *fh, f->fmt.pix.height * f->fmt.pix.bytesperline; return 0; case V4L2_BUF_TYPE_VIDEO_OVERLAY: + if (saa7134_no_overlay > 0) { + printk ("V4L2_BUF_TYPE_VIDEO_OVERLAY: no_overlay\n"); + return -EINVAL; + } f->fmt.win = fh->win; return 0; case V4L2_BUF_TYPE_VBI_CAPTURE: @@ -1526,6 +1530,10 @@ static int saa7134_try_fmt(struct saa7134_dev *dev, struct saa7134_fh *fh, return 0; } case V4L2_BUF_TYPE_VIDEO_OVERLAY: + if (saa7134_no_overlay > 0) { + printk ("V4L2_BUF_TYPE_VIDEO_OVERLAY: no_overlay\n"); + return -EINVAL; + } err = verify_preview(dev,&f->fmt.win); if (0 != err) return err; @@ -1556,6 +1564,10 @@ static int saa7134_s_fmt(struct saa7134_dev *dev, struct saa7134_fh *fh, fh->cap.field = f->fmt.pix.field; return 0; case V4L2_BUF_TYPE_VIDEO_OVERLAY: + if (saa7134_no_overlay > 0) { + printk ("V4L2_BUF_TYPE_VIDEO_OVERLAY: no_overlay\n"); + return -EINVAL; + } err = verify_preview(dev,&f->fmt.win); if (0 != err) return err; @@ -1715,11 +1727,13 @@ static int video_do_ioctl(struct inode *inode, struct file *file, cap->version = SAA7134_VERSION_CODE; cap->capabilities = V4L2_CAP_VIDEO_CAPTURE | - V4L2_CAP_VIDEO_OVERLAY | V4L2_CAP_VBI_CAPTURE | V4L2_CAP_READWRITE | V4L2_CAP_STREAMING | V4L2_CAP_TUNER; + if (saa7134_no_overlay <= 0) { + cap->capabilities |= V4L2_CAP_VIDEO_OVERLAY; + } if ((tuner_type == TUNER_ABSENT) || (tuner_type == UNSET)) cap->capabilities &= ~V4L2_CAP_TUNER; @@ -1970,6 +1984,10 @@ static int video_do_ioctl(struct inode *inode, struct file *file, switch (type) { case V4L2_BUF_TYPE_VIDEO_CAPTURE: case V4L2_BUF_TYPE_VIDEO_OVERLAY: + if (saa7134_no_overlay > 0) { + printk ("V4L2_BUF_TYPE_VIDEO_OVERLAY: no_overlay\n"); + return -EINVAL; + } if (index >= FORMATS) return -EINVAL; if (f->type == V4L2_BUF_TYPE_VIDEO_OVERLAY && @@ -2030,6 +2048,11 @@ static int video_do_ioctl(struct inode *inode, struct file *file, int *on = arg; if (*on) { + if (saa7134_no_overlay > 0) { + printk ("no_overlay\n"); + return -EINVAL; + } + if (!res_get(dev,fh,RESOURCE_OVERLAY)) return -EBUSY; spin_lock_irqsave(&dev->slock,flags); @@ -2281,7 +2304,7 @@ static struct file_operations radio_fops = struct video_device saa7134_video_template = { .name = "saa7134-video", - .type = VID_TYPE_CAPTURE|VID_TYPE_TUNER|VID_TYPE_OVERLAY| + .type = VID_TYPE_CAPTURE|VID_TYPE_TUNER| VID_TYPE_CLIPPING|VID_TYPE_SCALES, .hardware = 0, .fops = &video_fops, diff --git a/drivers/media/video/saa7134/saa7134.h b/drivers/media/video/saa7134/saa7134.h index 683e785..17ba34f 100644 --- a/drivers/media/video/saa7134/saa7134.h +++ b/drivers/media/video/saa7134/saa7134.h @@ -557,6 +557,7 @@ struct saa7134_dev { /* saa7134-core.c */ extern struct list_head saa7134_devlist; +extern int saa7134_no_overlay; void saa7134_track_gpio(struct saa7134_dev *dev, char *msg); -- cgit v0.10.2