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[media] cx88: implemented sharpness control

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This patch implements support for a sharpness control, using the luma
peaking filter feature of cx2388x.

[mchehab@redhat.com: use cx_andor instead of cx_write]
Signed-off-by: Istvan Varga <istvan_v@mailbox.hu>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
This commit is contained in:
istvan_v@mailbox.hu 2011-07-11 11:02:19 -03:00 committed by Mauro Carvalho Chehab
parent fef1c8d018
commit eea16e3661
2 changed files with 30 additions and 3 deletions
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4
drivers/media/video/cx88/cx88-core.c
View File

@ -759,8 +759,8 @@ int cx88_set_scale(struct cx88_core *core, unsigned int width, unsigned int heig
if (nocomb)
value |= (3 << 5); // disable comb filter
cx_write(MO_FILTER_EVEN, value);
cx_write(MO_FILTER_ODD, value);
cx_andor(MO_FILTER_EVEN, 0x7ffc7f, value); /* preserve PEAKEN, PSEL */
cx_andor(MO_FILTER_ODD, 0x7ffc7f, value);
dprintk(1,"set_scale: filter 0x%04x\n", value);
return 0;

29
drivers/media/video/cx88/cx88-video.c
View File

@ -221,7 +221,23 @@ static const struct cx88_ctrl cx8800_ctls[] = {
.reg = MO_UV_SATURATION,
.mask = 0x00ff,
.shift = 0,
},{
}, {
.v = {
.id = V4L2_CID_SHARPNESS,
.name = "Sharpness",
.minimum = 0,
.maximum = 4,
.step = 1,
.default_value = 0x0,
.type = V4L2_CTRL_TYPE_INTEGER,
},
.off = 0,
/* NOTE: the value is converted and written to both even
and odd registers in the code */
.reg = MO_FILTER_ODD,
.mask = 7 << 7,
.shift = 7,
}, {
.v = {
.id = V4L2_CID_CHROMA_AGC,
.name = "Chroma AGC",
@ -301,6 +317,7 @@ const u32 cx88_user_ctrls[] = {
V4L2_CID_AUDIO_VOLUME,
V4L2_CID_AUDIO_BALANCE,
V4L2_CID_AUDIO_MUTE,
V4L2_CID_SHARPNESS,
V4L2_CID_CHROMA_AGC,
V4L2_CID_COLOR_KILLER,
0
@ -963,6 +980,10 @@ int cx88_get_control (struct cx88_core *core, struct v4l2_control *ctl)
case V4L2_CID_AUDIO_VOLUME:
ctl->value = 0x3f - (value & 0x3f);
break;
case V4L2_CID_SHARPNESS:
ctl->value = ((value & 0x0200) ? (((value & 0x0180) >> 7) + 1)
: 0);
break;
default:
ctl->value = ((value + (c->off << c->shift)) & c->mask) >> c->shift;
break;
@ -1040,6 +1061,12 @@ int cx88_set_control(struct cx88_core *core, struct v4l2_control *ctl)
}
mask=0xffff;
break;
case V4L2_CID_SHARPNESS:
/* 0b000, 0b100, 0b101, 0b110, or 0b111 */
value = (ctl->value < 1 ? 0 : ((ctl->value + 3) << 7));
/* needs to be set for both fields */
cx_andor(MO_FILTER_EVEN, mask, value);
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;