From 7d1a83cb68172a225c45243e955d9ee41eada8e9 Mon Sep 17 00:00:00 2001 From: =?utf8?q?Ville=20Syrj=C3=A4l=C3=A4?= Date: Tue, 15 Mar 2016 16:39:58 +0200 Subject: [PATCH] drm/i915: assert_panel_unlocked() in chv_enable_pll() MIME-Version: 1.0 Content-Type: text/plain; charset=utf8 Content-Transfer-Encoding: 8bit Supposedly the power sequencer still locks out the DPLL registers on CHV, so let's issue a warning if it's still locked when enabling the DPLL. Also drop the redundant IS_MOBILE() check for VLV when we check the same thing. Signed-off-by: Ville Syrjälä Link: http://patchwork.freedesktop.org/patch/msgid/1458052809-23426-6-git-send-email-ville.syrjala@linux.intel.com Reviewed-by: Jani Nikula --- drivers/gpu/drm/i915/intel_display.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c index 6a95c31..4fbff48 100644 --- a/drivers/gpu/drm/i915/intel_display.c +++ b/drivers/gpu/drm/i915/intel_display.c @@ -1535,8 +1535,7 @@ static void vlv_enable_pll(struct intel_crtc *crtc, assert_pipe_disabled(dev_priv, pipe); /* PLL is protected by panel, make sure we can write it */ - if (IS_MOBILE(dev_priv->dev)) - assert_panel_unlocked(dev_priv, pipe); + assert_panel_unlocked(dev_priv, pipe); I915_WRITE(reg, dpll); POSTING_READ(reg); @@ -1571,6 +1570,9 @@ static void chv_enable_pll(struct intel_crtc *crtc, assert_pipe_disabled(dev_priv, pipe); + /* PLL is protected by panel, make sure we can write it */ + assert_panel_unlocked(dev_priv, pipe); + mutex_lock(&dev_priv->sb_lock); /* Enable back the 10bit clock to display controller */ -- 2.7.4