From 08d8a232aa5e145f995a98ac7f3de55e2fe6832b Mon Sep 17 00:00:00 2001 From: =?utf8?q?Ville=20Syrj=C3=A4l=C3=A4?= Date: Thu, 27 Aug 2015 23:56:08 +0300 Subject: [PATCH] drm/i915: Reinitialize HPD after runtime D3 MIME-Version: 1.0 Content-Type: text/plain; charset=utf8 Content-Transfer-Encoding: 8bit Runtime suspends disabled all interrupts, so in order to get them back fully we need to also do the HPD irq setup on runtime resume. Except on VLV/CHV where the display interrupt initialization is part of the display power well powerup. Reviewed-by: Paulo Zanoni Signed-off-by: Ville Syrjälä Signed-off-by: Daniel Vetter --- drivers/gpu/drm/i915/i915_drv.c | 9 +++++++++ 1 file changed, 9 insertions(+) diff --git a/drivers/gpu/drm/i915/i915_drv.c b/drivers/gpu/drm/i915/i915_drv.c index 4737d15de5f0..bdec64ca6f13 100644 --- a/drivers/gpu/drm/i915/i915_drv.c +++ b/drivers/gpu/drm/i915/i915_drv.c @@ -1555,6 +1555,15 @@ static int intel_runtime_resume(struct device *device) gen6_update_ring_freq(dev); intel_runtime_pm_enable_interrupts(dev_priv); + + /* + * On VLV/CHV display interrupts are part of the display + * power well, so hpd is reinitialized from there. For + * everyone else do it here. + */ + if (!IS_VALLEYVIEW(dev_priv)) + intel_hpd_init(dev_priv); + intel_enable_gt_powersave(dev); if (ret) -- 2.20.1