vlv_punit_write
int vlv_punit_write(struct drm_i915_private *dev_priv, u32 addr, u32 val);
vlv_punit_write(dev_priv, PUNIT_REG_DSPFREQ, val);
vlv_punit_write(dev_priv, PUNIT_REG_DSPFREQ, val);
vlv_punit_write(dev_priv, PUNIT_REG_DDR_SETUP2, val);
vlv_punit_write(dev_priv, PUNIT_REG_DSPFREQ, val);
vlv_punit_write(dev_priv, PUNIT_REG_DDR_SETUP2, val);
err = vlv_punit_write(dev_priv, PUNIT_REG_GPU_FREQ_REQ, val);
vlv_punit_write(dev_priv, VLV_TURBO_SOC_OVERRIDE, val);
vlv_punit_write(dev_priv, VLV_TURBO_SOC_OVERRIDE, val);
vlv_punit_write(dev_priv, PUNIT_REG_DSPFREQ, ctrl);
vlv_punit_write(dev_priv, PUNIT_REG_PWRGT_CTRL, ctrl);