From 69d0b96c095468526009cb3104eee561c9252a84 Mon Sep 17 00:00:00 2001 From: Daniel Vetter Date: Wed, 4 Aug 2010 21:22:09 +0200 Subject: [PATCH] drm/i915: fixup pageflip ringbuffer commands for i8xx Add a new path for 2nd gen chips that uses the commands for i81x chips (where public docs do exist) augmented with the plane bits from i915. It seems to work and doesn't result in a black screen like before. Signed-off-by: Daniel Vetter Cc: stable@kernel.org [anholt: resolved against conflict] Reviewed-by: Jesse Barnes Signed-off-by: Eric Anholt --- drivers/gpu/drm/i915/intel_display.c | 8 +++++++- 1 file changed, 7 insertions(+), 1 deletion(-) diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c index f3b014fe350..ce7a46b6909 100644 --- a/drivers/gpu/drm/i915/intel_display.c +++ b/drivers/gpu/drm/i915/intel_display.c @@ -5119,12 +5119,18 @@ static int intel_crtc_page_flip(struct drm_crtc *crtc, OUT_RING(offset | obj_priv->tiling_mode); pipesrc = I915_READ(pipesrc_reg); OUT_RING(pipesrc & 0x0fff0fff); - } else { + } else if (IS_GEN3(dev)) { OUT_RING(MI_DISPLAY_FLIP_I915 | MI_DISPLAY_FLIP_PLANE(intel_crtc->plane)); OUT_RING(fb->pitch); OUT_RING(offset); OUT_RING(MI_NOOP); + } else { + OUT_RING(MI_DISPLAY_FLIP | + MI_DISPLAY_FLIP_PLANE(intel_crtc->plane)); + OUT_RING(fb->pitch); + OUT_RING(offset); + OUT_RING(MI_NOOP); } ADVANCE_LP_RING(); -- 2.20.1