Commit f0d2b758 authored May 18, 2018 by Ville Syrjälä

drm/i915: WARN if power sequencer is not connected to the LVDS port on pre-ilk

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.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20180518152931.13104-7-ville.syrjala@linux.intel.com

Reviewed-by: Jani Nikula <jani.nikula@intel.com>

parent 4c23dea4

drivers/gpu/drm/i915/intel_display.c

+5 −0

Original line number	Diff line number	Diff line
		@@ -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);
		}