cdv_sb_write
cdv_sb_write(dev, SB_REF_SFR(pipe), ref_value);
ret = cdv_sb_write(dev, ref_sfr, ref_value);
ret = cdv_sb_write(dev, SB_M(pipe), m);
ret = cdv_sb_write(dev, SB_N_VCO(pipe), n_vco);
ret = cdv_sb_write(dev, SB_P(pipe), p);
cdv_sb_write(dev, lane_reg, lane_value);
cdv_sb_write(dev, lane_reg, lane_value);
cdv_sb_write(dev, lane_reg, lane_value);
cdv_sb_write(dev, lane_reg, lane_value);
cdv_sb_write(dev, ddi_reg->VSwing5, 0x0505313A);
cdv_sb_write(dev, ddi_reg->VSwing1, 0x43406055);
cdv_sb_write(dev, ddi_reg->VSwing2, 0x055738954);
cdv_sb_write(dev, ddi_reg->VSwing2, dp_vswing_premph_table[index]);
cdv_sb_write(dev, ddi_reg->VSwing3, 0x70802040);
cdv_sb_write(dev, ddi_reg->VSwing3, 0x40802040);
cdv_sb_write(dev, ddi_reg->VSwing1, 0xc3406055);
cdv_sb_write(dev, ddi_reg->PreEmph1, 0x1f030040);
cdv_sb_write(dev, ddi_reg->PreEmph2, dp_vswing_premph_table[index]);
extern int cdv_sb_write(struct drm_device *dev, u32 reg, u32 val);