diff options
| -rw-r--r-- | drivers/gpu/drm/i915/intel_dp.c | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/intel_dp.c b/drivers/gpu/drm/i915/intel_dp.c index 117eb9988250..d19334aa66ad 100644 --- a/drivers/gpu/drm/i915/intel_dp.c +++ b/drivers/gpu/drm/i915/intel_dp.c @@ -784,6 +784,11 @@ static bool ironlake_edp_panel_on (struct drm_device *dev) pp |= POWER_TARGET_ON; I915_WRITE(PCH_PP_CONTROL, pp); + /* Ouch. We need to wait here for some panels, like Dell e6510 + * https://bugs.freedesktop.org/show_bug.cgi?id=29278i + */ + msleep(300); + if (wait_for(I915_READ(PCH_PP_STATUS) & PP_ON, 5000)) DRM_ERROR("panel on wait timed out: 0x%08x\n", I915_READ(PCH_PP_STATUS)); @@ -819,6 +824,11 @@ static void ironlake_edp_panel_off (struct drm_device *dev) pp |= PANEL_POWER_RESET; /* restore panel reset bit */ I915_WRITE(PCH_PP_CONTROL, pp); POSTING_READ(PCH_PP_CONTROL); + + /* Ouch. We need to wait here for some panels, like Dell e6510 + * https://bugs.freedesktop.org/show_bug.cgi?id=29278i + */ + msleep(300); } static void ironlake_edp_panel_vdd_on(struct drm_device *dev) |