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V4L/DVB (5807): Bttv: Add support for DBG_[SG]_REGISTER ioctls

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Adds the advanced debugging register read/write ioctl support to the bttv
driver.

Signed-off-by: Trent Piepho <xyzzy@speakeasy.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
This commit is contained in:
Trent Piepho 2007-06-29 00:17:36 -03:00 committed by Mauro Carvalho Chehab
parent 8c2c0dfe4d
commit 55c0d1005a
1 changed files with 22 additions and 0 deletions
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22
drivers/media/video/bt8xx/bttv-driver.c
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@ -2259,6 +2259,24 @@ static int bttv_common_ioctls(struct bttv *btv, unsigned int cmd, void *arg)
printk(KERN_INFO "bttv%d: ================== END STATUS CARD #%d ==================\n", btv->c.nr, btv->c.nr);
return 0;
}
#ifdef CONFIG_VIDEO_ADV_DEBUG
case VIDIOC_DBG_G_REGISTER:
case VIDIOC_DBG_S_REGISTER:
{
struct v4l2_register *reg = arg;
if (!capable(CAP_SYS_ADMIN))
return -EPERM;
if (!v4l2_chip_match_host(reg->match_type, reg->match_chip))
return -EINVAL;
/* bt848 has a 12-bit register space */
reg->reg &= 0xfff;
if (cmd == VIDIOC_DBG_G_REGISTER)
reg->val = btread(reg->reg);
else
btwrite(reg->val, reg->reg);
return 0;
}
#endif
default:
return -ENOIOCTLCMD;
@ -3569,6 +3587,8 @@ static int bttv_do_ioctl(struct inode *inode, struct file *file,
case VIDIOC_G_FREQUENCY:
case VIDIOC_S_FREQUENCY:
case VIDIOC_LOG_STATUS:
case VIDIOC_DBG_G_REGISTER:
case VIDIOC_DBG_S_REGISTER:
return bttv_common_ioctls(btv,cmd,arg);
default:
@ -3951,6 +3971,8 @@ static int radio_do_ioctl(struct inode *inode, struct file *file,
case VIDIOCGAUDIO:
case VIDIOCSAUDIO:
case VIDIOC_LOG_STATUS:
case VIDIOC_DBG_G_REGISTER:
case VIDIOC_DBG_S_REGISTER:
return bttv_common_ioctls(btv,cmd,arg);
default: