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V4L/DVB (13187): au8522: add support for saturation and hue controls

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Add support for saturation/hue controls, prompted by errors showing up in
the mythbackend log.

Signed-off-by: Devin Heitmueller <dheitmueller@kernellabs.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
This commit is contained in:
Devin Heitmueller 2009-10-13 23:32:29 -03:00 committed by Mauro Carvalho Chehab
parent 6a540bdf01
commit 36a91879d8
2 changed files with 22 additions and 2 deletions
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22
drivers/media/dvb/frontends/au8522_decoder.c
View File

@ -23,7 +23,6 @@
/* Developer notes:
*
* VBI support is not yet working
* Saturation and hue setting are not yet working
* Enough is implemented here for CVBS and S-Video inputs, but the actual
* analog demodulator code isn't implemented (not needed for xc5000 since it
* has its own demodulator and outputs CVBS)
@ -236,8 +235,10 @@ static void setup_decoder_defaults(struct au8522_state *state, u8 input_mode)
state->contrast = 0x79;
au8522_writereg(state, AU8522_TVDEC_SATURATION_CB_REG00CH, 0x80);
au8522_writereg(state, AU8522_TVDEC_SATURATION_CR_REG00DH, 0x80);
state->saturation = 0x80;
au8522_writereg(state, AU8522_TVDEC_HUE_H_REG00EH, 0x00);
au8522_writereg(state, AU8522_TVDEC_HUE_L_REG00FH, 0x00);
state->hue = 0x00;
/* Other decoder registers */
au8522_writereg(state, AU8522_TVDEC_INT_MASK_REG010H, 0x00);
@ -504,7 +505,19 @@ static int au8522_s_ctrl(struct v4l2_subdev *sd, struct v4l2_control *ctrl)
ctrl->value);
break;
case V4L2_CID_SATURATION:
state->saturation = ctrl->value;
au8522_writereg(state, AU8522_TVDEC_SATURATION_CB_REG00CH,
ctrl->value);
au8522_writereg(state, AU8522_TVDEC_SATURATION_CR_REG00DH,
ctrl->value);
break;
case V4L2_CID_HUE:
state->hue = ctrl->value;
au8522_writereg(state, AU8522_TVDEC_HUE_H_REG00EH,
ctrl->value >> 8);
au8522_writereg(state, AU8522_TVDEC_HUE_L_REG00FH,
ctrl->value & 0xFF);
break;
case V4L2_CID_AUDIO_VOLUME:
case V4L2_CID_AUDIO_BASS:
case V4L2_CID_AUDIO_TREBLE:
@ -534,7 +547,11 @@ static int au8522_g_ctrl(struct v4l2_subdev *sd, struct v4l2_control *ctrl)
ctrl->value = state->contrast;
break;
case V4L2_CID_SATURATION:
ctrl->value = state->saturation;
break;
case V4L2_CID_HUE:
ctrl->value = state->hue;
break;
case V4L2_CID_AUDIO_VOLUME:
case V4L2_CID_AUDIO_BASS:
case V4L2_CID_AUDIO_TREBLE:
@ -632,8 +649,9 @@ static int au8522_queryctrl(struct v4l2_subdev *sd, struct v4l2_queryctrl *qc)
case V4L2_CID_BRIGHTNESS:
return v4l2_ctrl_query_fill(qc, 0, 255, 1, 128);
case V4L2_CID_SATURATION:
return v4l2_ctrl_query_fill(qc, 0, 255, 1, 128);
case V4L2_CID_HUE:
/* Not yet implemented */
return v4l2_ctrl_query_fill(qc, -32768, 32768, 1, 0);
default:
break;
}

2
drivers/media/dvb/frontends/au8522_priv.h
View File

@ -62,6 +62,8 @@ struct au8522_state {
u32 rev;
u8 brightness;
u8 contrast;
u8 saturation;
s16 hue;
};
/* These are routines shared by both the VSB/QAM demodulator and the analog