drm/i915: check the power domains in ironlake_get_pipe_config()

Just like we already do in haswell_get_pipe_config(). This should
prevent some WARNs when we run pm_rpm on SNB.

Testcase: igt/pm_rpm
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=80463
Signed-off-by: Paulo Zanoni <paulo.r.zanoni@intel.com>
Reviewed-by: Damien Lespiau <damien.lespiau@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>

diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c
index 15ade7ec4b744f6a85b085fdf03da35ee4b779e5..54381d7a6b8a6be1a4a2e8668f31c60b751c1f46 100644 (file)
--- a/drivers/gpu/drm/i915/intel_display.c
+++ b/drivers/gpu/drm/i915/intel_display.c
@@ -7240,6 +7240,10 @@ static bool ironlake_get_pipe_config(struct intel_crtc *crtc,
        struct drm_i915_private *dev_priv = dev->dev_private;
        uint32_t tmp;
 
+       if (!intel_display_power_enabled(dev_priv,
+                                        POWER_DOMAIN_PIPE(crtc->pipe)))
+               return false;
+
        pipe_config->cpu_transcoder = (enum transcoder) crtc->pipe;
        pipe_config->shared_dpll = DPLL_ID_PRIVATE;