wm8775_s_ctrl
.s_ctrl = wm8775_s_ctrl,
wm8775_s_ctrl(core, V4L2_CID_AUDIO_VOLUME, v);
wm8775_s_ctrl(core, V4L2_CID_AUDIO_BALANCE, b);
wm8775_s_ctrl(core,
wm8775_s_ctrl(core, V4L2_CID_AUDIO_LOUDNESS,
wm8775_s_ctrl(core, ctrl->id, ctrl->val);
wm8775_s_ctrl(core, ctrl->id, (ctrl->val) ?
wm8775_s_ctrl(core, ctrl->id, ctrl->val << 9);