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drm/i915: get a runtime PM reference when the panel VDD is on

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And put it when it's off. Otherwise, when you run pm_pc8 from
intel-gpu-tools, and the delayed function that disables VDD runs,
we'll get some messages saying we're touching registers while the HW
is suspended.

Signed-off-by: Paulo Zanoni <paulo.r.zanoni@intel.com>
Reviewed-by: Rodrigo Vivi <rodrigo.vivi@gmail.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
This commit is contained in:
Paulo Zanoni
2013-11-21 13:47:23 -02:00
committed by Daniel Vetter
parent c8c8fb33b3
commit e9cb81a228
1 changed files with 7 additions and 0 deletions
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7
drivers/gpu/drm/i915/intel_dp.c
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@@ -1094,6 +1094,8 @@ void ironlake_edp_panel_vdd_on(struct intel_dp *intel_dp)
if (ironlake_edp_have_panel_vdd(intel_dp)) if (ironlake_edp_have_panel_vdd(intel_dp))
return; return;
intel_runtime_pm_get(dev_priv);
DRM_DEBUG_KMS("Turning eDP VDD on\n"); DRM_DEBUG_KMS("Turning eDP VDD on\n");
if (!ironlake_edp_have_panel_power(intel_dp)) if (!ironlake_edp_have_panel_power(intel_dp))
@@ -1143,6 +1145,8 @@ static void ironlake_panel_vdd_off_sync(struct intel_dp *intel_dp)
DRM_DEBUG_KMS("PP_STATUS: 0x%08x PP_CONTROL: 0x%08x\n", DRM_DEBUG_KMS("PP_STATUS: 0x%08x PP_CONTROL: 0x%08x\n",
I915_READ(pp_stat_reg), I915_READ(pp_ctrl_reg)); I915_READ(pp_stat_reg), I915_READ(pp_ctrl_reg));
msleep(intel_dp->panel_power_down_delay); msleep(intel_dp->panel_power_down_delay);
intel_runtime_pm_put(dev_priv);
} }
} }
@@ -1250,6 +1254,9 @@ void ironlake_edp_panel_off(struct intel_dp *intel_dp)
intel_dp->want_panel_vdd = false; intel_dp->want_panel_vdd = false;
ironlake_wait_panel_off(intel_dp); ironlake_wait_panel_off(intel_dp);
/* We got a reference when we enabled the VDD. */
intel_runtime_pm_put(dev_priv);
} }
void ironlake_edp_backlight_on(struct intel_dp *intel_dp) void ironlake_edp_backlight_on(struct intel_dp *intel_dp)