From: Ville Syrjälä <ville.syrj...@linux.intel.com>
We don't support using the power sequencer with other ports besides LVDS
on pre-ilk platforms. WARN if someone has mistakenly connected the power
sequencer to the wrong port.
Signed-off-by: Ville Syrjälä <ville.syrj...@linux.intel.com>
---
drivers/gpu/drm/i915/intel_display.c | 5 +++++
1 file changed, 5 insertions(+)
diff --git a/drivers/gpu/drm/i915/intel_display.c
b/drivers/gpu/drm/i915/intel_display.c
index a7702a72cd69..4773a4f52bfe 100644
--- a/drivers/gpu/drm/i915/intel_display.c
+++ b/drivers/gpu/drm/i915/intel_display.c
@@ -1236,7 +1236,12 @@ void assert_panel_unlocked(struct drm_i915_private
*dev_priv, enum pipe pipe)
pp_reg = PP_CONTROL(pipe);
panel_pipe = pipe;
} else {
+ u32 port_sel;
+
pp_reg = PP_CONTROL(0);
+ port_sel = I915_READ(PP_ON_DELAYS(0)) & PANEL_PORT_SELECT_MASK;
+
+ WARN_ON(port_sel != PANEL_PORT_SELECT_LVDS);
intel_lvds_port_enabled(dev_priv, LVDS, &panel_pipe);
}
--
2.16.1
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