diff options
Diffstat (limited to 'drivers/gpu/drm/i915/intel_sdvo.c')
| -rw-r--r-- | drivers/gpu/drm/i915/intel_sdvo.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/intel_sdvo.c b/drivers/gpu/drm/i915/intel_sdvo.c index 0a0625761f42..e3e9c98eaf52 100644 --- a/drivers/gpu/drm/i915/intel_sdvo.c +++ b/drivers/gpu/drm/i915/intel_sdvo.c @@ -243,6 +243,14 @@ static void intel_sdvo_write_sdvox(struct intel_sdvo *intel_sdvo, u32 val) if (intel_sdvo->sdvo_reg == PCH_SDVOB) { I915_WRITE(intel_sdvo->sdvo_reg, val); POSTING_READ(intel_sdvo->sdvo_reg); + /* + * HW workaround, need to write this twice for issue + * that may result in first write getting masked. + */ + if (HAS_PCH_IBX(dev)) { + I915_WRITE(intel_sdvo->sdvo_reg, val); + POSTING_READ(intel_sdvo->sdvo_reg); + } return; } |