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Commit cb3543c6 authored by Eric Anholt's avatar Eric Anholt Committed by Chris Wilson
Browse files

drm/i915: Set the transcoder port to none when disabling DP. 



The specs say to do so.

Signed-off-by: default avatarEric Anholt <eric@anholt.net>
Signed-off-by: default avatarChris Wilson <chris@chris-wilson.co.uk>
parent 308977ac

drivers/gpu/drm/i915/i915_reg.h

+1 −0
Original line number Diff line number Diff line
@@ -3245,6 +3245,7 @@ 
#define  TRANS_DP_PORT_SEL_B	(0<<29)

#define  TRANS_DP_PORT_SEL_C	(1<<29)

#define  TRANS_DP_PORT_SEL_D	(2<<29)

#define  TRANS_DP_PORT_SEL_NONE	(3<<29)

#define  TRANS_DP_PORT_SEL_MASK	(3<<29)

#define  TRANS_DP_AUDIO_ONLY	(1<<26)

#define  TRANS_DP_ENH_FRAMING	(1<<18)

drivers/gpu/drm/i915/intel_display.c

+1 −0
Original line number Diff line number Diff line
@@ -2818,6 +2818,7 @@ static void ironlake_crtc_disable(struct drm_crtc *crtc) 
		reg = TRANS_DP_CTL(pipe);

		temp = I915_READ(reg);

		temp &= ~(TRANS_DP_OUTPUT_ENABLE | TRANS_DP_PORT_SEL_MASK);

		temp |= TRANS_DP_PORT_SEL_NONE;

		I915_WRITE(reg, temp);



		/* disable DPLL_SEL */