Commit 832cc28d authored Jul 13, 2009 by Florian Mickler Committed by Eric Anholt Jul 13, 2009

drm/i915: Set lvds dual channel according to register from vbios



Vbios will set lvds register correctly based on
current algorithm for lingle/dual Channel LVDS when
system boot, so we can accept this configuration
directly, regardless of LVDS enable status.

It fixed freedesktop.org bug #22262

Signed-off-by: Florian Mickler <florian@mickler.org>
Signed-off-by: Eric Anholt <eric@anholt.net>

parent 7638d532

drivers/gpu/drm/i915/intel_display.c

+1 −1

Original line number	Diff line number	Diff line
		@@ -645,7 +645,7 @@ intel_find_best_PLL(const intel_limit_t limit, struct drm_crtc crtc,
		int err = target;

		if (IS_I9XX(dev) && intel_pipe_has_type(crtc, INTEL_OUTPUT_LVDS) &&
		(I915_READ(LVDS) & LVDS_PORT_EN) != 0) {
		(I915_READ(LVDS)) != 0) {
		/*
		* For LVDS, if the panel is on, just rely on its current
		* settings for dual-channel. We haven't figured out how to

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