diff options
| author | Frej Drejhammar <frej.drejhammar@gmail.com> | 2008-03-23 22:43:21 -0300 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab@infradead.org> | 2008-04-24 14:07:55 -0300 |
| commit | 6d04203c7f49a4d93304b5754de5457297fa04eb (patch) | |
| tree | a76667e334af96bca870add2fc7f36f7cebedf95 /drivers/media/video/cx88/cx88-video.c | |
| parent | 1c412d1236b98bfc59fc694238cd26e6ed7f4f4b (diff) | |
V4L/DVB (7451): cx88: Add user control for chroma AGC
The cx2388x family has support for chroma AGC. This patch implements a
the V4L2_CID_CHROMA_AGC control for the cx2388x family. By default
chroma AGC is disabled, as in previous versions of the driver.
Signed-off-by: "Frej Drejhammar <frej.drejhammar@gmail.com>"
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
Diffstat (limited to 'drivers/media/video/cx88/cx88-video.c')
| -rw-r--r-- | drivers/media/video/cx88/cx88-video.c | 30 |
1 files changed, 28 insertions, 2 deletions
diff --git a/drivers/media/video/cx88/cx88-video.c b/drivers/media/video/cx88/cx88-video.c index 1eea044969a1..7ec6763f0e79 100644 --- a/drivers/media/video/cx88/cx88-video.c +++ b/drivers/media/video/cx88/cx88-video.c @@ -228,6 +228,18 @@ static struct cx88_ctrl cx8800_ctls[] = { .mask = 0x00ff, .shift = 0, },{ + .v = { + .id = V4L2_CID_CHROMA_AGC, + .name = "Chroma AGC", + .minimum = 0, + .maximum = 1, + .default_value = 0x0, + .type = V4L2_CTRL_TYPE_BOOLEAN, + }, + .reg = MO_INPUT_FORMAT, + .mask = 1 << 10, + .shift = 10, + }, { /* --- audio --- */ .v = { .id = V4L2_CID_AUDIO_MUTE, @@ -282,6 +294,7 @@ const u32 cx88_user_ctrls[] = { V4L2_CID_AUDIO_VOLUME, V4L2_CID_AUDIO_BALANCE, V4L2_CID_AUDIO_MUTE, + V4L2_CID_CHROMA_AGC, 0 }; EXPORT_SYMBOL(cx88_user_ctrls); @@ -291,7 +304,7 @@ static const u32 *ctrl_classes[] = { NULL }; -int cx8800_ctrl_query(struct v4l2_queryctrl *qctrl) +int cx8800_ctrl_query(struct cx88_core *core, struct v4l2_queryctrl *qctrl) { int i; @@ -306,6 +319,11 @@ int cx8800_ctrl_query(struct v4l2_queryctrl *qctrl) return 0; } *qctrl = cx8800_ctls[i].v; + /* Report chroma AGC as inactive when SECAM is selected */ + if (cx8800_ctls[i].v.id == V4L2_CID_CHROMA_AGC && + core->tvnorm & V4L2_STD_SECAM) + qctrl->flags |= V4L2_CTRL_FLAG_INACTIVE; + return 0; } EXPORT_SYMBOL(cx8800_ctrl_query); @@ -976,6 +994,12 @@ int cx88_set_control(struct cx88_core *core, struct v4l2_control *ctl) } mask=0xffff; break; + case V4L2_CID_CHROMA_AGC: + /* Do not allow chroma AGC to be enabled for SECAM */ + value = ((ctl->value - c->off) << c->shift) & c->mask; + if (core->tvnorm & V4L2_STD_SECAM && value) + return -EINVAL; + break; default: value = ((ctl->value - c->off) << c->shift) & c->mask; break; @@ -1268,10 +1292,12 @@ static int vidioc_s_input (struct file *file, void *priv, unsigned int i) static int vidioc_queryctrl (struct file *file, void *priv, struct v4l2_queryctrl *qctrl) { + struct cx88_core *core = ((struct cx8800_fh *)priv)->dev->core; + qctrl->id = v4l2_ctrl_next(ctrl_classes, qctrl->id); if (unlikely(qctrl->id == 0)) return -EINVAL; - return cx8800_ctrl_query(qctrl); + return cx8800_ctrl_query(core, qctrl); } static int vidioc_g_ctrl (struct file *file, void *priv, |