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| author | Paulo Zanoni <paulo.r.zanoni@intel.com> | 2013-11-21 13:47:23 -0200 |
|---|---|---|
| committer | Daniel Vetter <daniel.vetter@ffwll.ch> | 2013-12-10 22:50:42 +0100 |
| commit | e9cb81a22841908b1c075156b409a538d09c8466 (patch) | |
| tree | e904f4237d047a9e3dbdc8e4d1c3b4df9b7fa327 /drivers/gpu/drm/i915 | |
| parent | c8c8fb33b37766acf6474784b0d5245dab9a1690 (diff) | |
| download | lwn-e9cb81a22841908b1c075156b409a538d09c8466.tar.gz lwn-e9cb81a22841908b1c075156b409a538d09c8466.zip | |
drm/i915: get a runtime PM reference when the panel VDD is on
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>
Diffstat (limited to 'drivers/gpu/drm/i915')
| -rw-r--r-- | drivers/gpu/drm/i915/intel_dp.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/intel_dp.c b/drivers/gpu/drm/i915/intel_dp.c index a01264234bf0..ba5a59c9129f 100644 --- a/drivers/gpu/drm/i915/intel_dp.c +++ b/drivers/gpu/drm/i915/intel_dp.c @@ -1094,6 +1094,8 @@ void ironlake_edp_panel_vdd_on(struct intel_dp *intel_dp) if (ironlake_edp_have_panel_vdd(intel_dp)) return; + intel_runtime_pm_get(dev_priv); + DRM_DEBUG_KMS("Turning eDP VDD on\n"); 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", I915_READ(pp_stat_reg), I915_READ(pp_ctrl_reg)); 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; 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) |