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Commit d9b6cb56 authored by Jesse Barnes's avatar Jesse Barnes Committed by Chris Wilson
Browse files

drm/i915: assert panel is unlocked before writing transcoder timing regs 



Otherwise our writes will be silently ignored.

Signed-off-by: default avatarJesse Barnes <jbarnes@virtuousgeek.org>
Signed-off-by: default avatarChris Wilson <chris@chris-wilson.co.uk>
parent 92f2584a

drivers/gpu/drm/i915/intel_display.c

+2 −1
Original line number Diff line number Diff line
@@ -2444,7 +2444,8 @@ static void ironlake_crtc_enable(struct drm_crtc *crtc) 
		I915_WRITE(PCH_DPLL_SEL, temp);

	}



	/* set transcoder timing */

	/* set transcoder timing, panel must allow it */

	assert_panel_unlocked(dev_priv, pipe);

	I915_WRITE(TRANS_HTOTAL(pipe), I915_READ(HTOTAL(pipe)));

	I915_WRITE(TRANS_HBLANK(pipe), I915_READ(HBLANK(pipe)));

	I915_WRITE(TRANS_HSYNC(pipe),  I915_READ(HSYNC(pipe)));