diff options
| author | Trent Piepho <xyzzy@speakeasy.org> | 2007-06-29 00:17:36 -0300 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab@infradead.org> | 2007-07-18 14:24:28 -0300 |
| commit | 55c0d1005a0e5f590f71f918e49bdc81362f93a6 (patch) | |
| tree | 36e073b5a65aa7bab934ff19c68fecb4c77b955d /drivers | |
| parent | 8c2c0dfe4da28a152c0de2c2ca3a66c1bc2fef7c (diff) | |
V4L/DVB (5807): Bttv: Add support for DBG_[SG]_REGISTER ioctls
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>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/media/video/bt8xx/bttv-driver.c | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/drivers/media/video/bt8xx/bttv-driver.c b/drivers/media/video/bt8xx/bttv-driver.c index 284bdf2d243..cb555f2c40f 100644 --- a/drivers/media/video/bt8xx/bttv-driver.c +++ b/drivers/media/video/bt8xx/bttv-driver.c @@ -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: |