From mboxrd@z Thu Jan 1 00:00:00 1970 From: Jesse Barnes Subject: [PATCH 5/5] drm/i915: flip on a no fb -> fb transition if crtc is active v3 Date: Wed, 26 Jun 2013 01:38:19 +0300 Message-ID: <1372199899-5315-6-git-send-email-jbarnes@virtuousgeek.org> References: <1372199899-5315-1-git-send-email-jbarnes@virtuousgeek.org> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: Received: from oproxy14-pub.unifiedlayer.com (oproxy14-pub.unifiedlayer.com [67.222.51.224]) by gabe.freedesktop.org (Postfix) with SMTP id 06714E61E0 for ; Tue, 25 Jun 2013 15:38:26 -0700 (PDT) Received: from [67.161.37.189] (port=55682 helo=localhost.localdomain) by box514.bluehost.com with esmtpsa (TLSv1:CAMELLIA256-SHA:256) (Exim 4.80) (envelope-from ) id 1UrbsX-0002Le-Bu for intel-gfx@lists.freedesktop.org; Tue, 25 Jun 2013 16:38:25 -0600 In-Reply-To: <1372199899-5315-1-git-send-email-jbarnes@virtuousgeek.org> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: intel-gfx-bounces+gcfxdi-intel-gfx=m.gmane.org@lists.freedesktop.org Errors-To: intel-gfx-bounces+gcfxdi-intel-gfx=m.gmane.org@lists.freedesktop.org To: intel-gfx@lists.freedesktop.org List-Id: intel-gfx@lists.freedesktop.org If the crtc is active, we can simply flip a new fb onto it, provided the other mode setting reqs are met. Otherwise, we'll need to do a full mode set to re-enable the crtc. v2: check for crtc active and set mode_changed accordingly v3: add module parameter, i915.fastboot, to control no fb -> fb flip behavior Signed-off-by: Jesse Barnes --- drivers/gpu/drm/i915/intel_display.c | 12 ++++++++++-- 1 file changed, 10 insertions(+), 2 deletions(-) diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c index a55e1e5..0e7324d 100644 --- a/drivers/gpu/drm/i915/intel_display.c +++ b/drivers/gpu/drm/i915/intel_display.c @@ -8667,8 +8667,16 @@ intel_set_config_compute_mode_changes(struct drm_mode_set *set, if (set->crtc->fb != set->fb) { /* If we have no fb then treat it as a full mode set */ if (set->crtc->fb == NULL) { - DRM_DEBUG_KMS("crtc has no fb, full mode set\n"); - config->mode_changed = true; + struct intel_crtc *intel_crtc = + to_intel_crtc(set->crtc); + + if (intel_crtc->active && i915_fastboot) { + DRM_DEBUG_KMS("crtc has no fb, will flip\n"); + config->fb_changed = true; + } else { + DRM_DEBUG_KMS("inactive crtc, full mode set\n"); + config->mode_changed = true; + } } else if (set->fb == NULL) { config->mode_changed = true; } else if (set->fb->pixel_format != -- 1.7.9.5