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[media] rtl2832_sdr: clamp bandwidth to nearest legal value in automode
Clamp bandwidth to nearest legal value in automode in order to pass v4l2-compliance test. Reported-by: Hans Verkuil <hverkuil@xs4all.nl> Signed-off-by: Antti Palosaari <crope@iki.fi> Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>
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1 changed files with 10 additions and 2 deletions
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@ -1322,8 +1322,16 @@ static int rtl2832_sdr_s_ctrl(struct v4l2_ctrl *ctrl)
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switch (ctrl->id) {
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case V4L2_CID_RF_TUNER_BANDWIDTH_AUTO:
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case V4L2_CID_RF_TUNER_BANDWIDTH:
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if (s->bandwidth_auto->val)
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s->bandwidth->val = s->f_adc;
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/* TODO: these controls should be moved to tuner drivers */
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if (s->bandwidth_auto->val) {
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/* Round towards the closest legal value */
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s32 val = s->f_adc + s->bandwidth->step / 2;
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u32 offset;
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val = clamp(val, s->bandwidth->minimum, s->bandwidth->maximum);
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offset = val - s->bandwidth->minimum;
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offset = s->bandwidth->step * (offset / s->bandwidth->step);
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s->bandwidth->val = s->bandwidth->minimum + offset;
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}
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c->bandwidth_hz = s->bandwidth->val;
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