diff options
Diffstat (limited to 'drivers/gpu/drm/i915/intel_pm.c')
| -rw-r--r-- | drivers/gpu/drm/i915/intel_pm.c | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/drivers/gpu/drm/i915/intel_pm.c b/drivers/gpu/drm/i915/intel_pm.c index 6f67fa122f8..e34ad964251 100644 --- a/drivers/gpu/drm/i915/intel_pm.c +++ b/drivers/gpu/drm/i915/intel_pm.c @@ -3604,9 +3604,14 @@ static void cpt_init_clock_gating(struct drm_device *dev) * downward, on (only) LVDS of some HP laptops with IVY. */ for_each_pipe(pipe) { - val = TRANS_CHICKEN2_TIMING_OVERRIDE; + val = I915_READ(TRANS_CHICKEN2(pipe)); + val |= TRANS_CHICKEN2_TIMING_OVERRIDE; + val &= ~TRANS_CHICKEN2_FDI_POLARITY_REVERSED; if (dev_priv->fdi_rx_polarity_inverted) val |= TRANS_CHICKEN2_FDI_POLARITY_REVERSED; + val &= ~TRANS_CHICKEN2_FRAME_START_DELAY_MASK; + val &= ~TRANS_CHICKEN2_DISABLE_DEEP_COLOR_COUNTER; + val &= ~TRANS_CHICKEN2_DISABLE_DEEP_COLOR_MODESWITCH; I915_WRITE(TRANS_CHICKEN2(pipe), val); } /* WADP0ClockGatingDisable */ |