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drm/i915: assert_panel_unlocked() in chv_enable_pll()

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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 <ville.syrjala@linux.intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/1458052809-23426-6-git-send-email-ville.syrjala@linux.intel.com
Reviewed-by: Jani Nikula <jani.nikula@intel.com>
This commit is contained in:
Ville Syrjälä 2016-03-15 16:39:58 +02:00
parent 8bd3f301ab
commit 7d1a83cb68
1 changed files with 4 additions and 2 deletions
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6
drivers/gpu/drm/i915/intel_display.c
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@ -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 */