From patchwork Mon Sep 10 03:03:16 2012 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Rob Clark X-Patchwork-Id: 11260 Return-Path: X-Original-To: patchwork@peony.canonical.com Delivered-To: patchwork@peony.canonical.com Received: from fiordland.canonical.com (fiordland.canonical.com [91.189.94.145]) by peony.canonical.com (Postfix) with ESMTP id 582D323E41 for ; Mon, 10 Sep 2012 03:04:44 +0000 (UTC) Received: from mail-ie0-f180.google.com (mail-ie0-f180.google.com [209.85.223.180]) by fiordland.canonical.com (Postfix) with ESMTP id F3446A18030 for ; Mon, 10 Sep 2012 03:04:43 +0000 (UTC) Received: by mail-ie0-f180.google.com with SMTP id k11so2235201iea.11 for ; Sun, 09 Sep 2012 20:04:43 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20120113; h=x-forwarded-to:x-forwarded-for:delivered-to:received-spf :dkim-signature:sender:from:to:cc:subject:date:message-id:x-mailer :in-reply-to:references:x-gm-message-state; bh=RcbQp4WI6KiKe67ToGF0QKBDGJu5FTQO0ujN9aj+T7Y=; b=LnrW5W0Gzi190xCBRFTxuDpG66AJyCOXXyGkaBvwBIuC6n48T2+Y0soDEmshBU9fy/ lkldXmL70fLMQxZMRlk1NVanacau6mwTSiVBmgn3IghcFMV876sMUq22IxombqZMm4RH ZgNZ4/HQ965YqyiutTiQ9BLaHwWdX+5O6tKs85gg6JLewPpZFxNWFutONctNcPW+nZqA +HUHJRBkbh+LHFBuxPuSsYIhqjaR5bsCxAZfzqN/tUQE0nFc8ZcwhWvjgQLvGByXnRGD Q577kQmjBORTBxzLCgOTOIdlzfCI5b6NnoKV0IwTaGL3M7ydIgJYG5eddendXoefP3TL 3fBA== Received: by 10.50.217.227 with SMTP id pb3mr8217838igc.28.1347246283688; Sun, 09 Sep 2012 20:04:43 -0700 (PDT) X-Forwarded-To: linaro-patchwork@canonical.com X-Forwarded-For: patch@linaro.org linaro-patchwork@canonical.com Delivered-To: patches@linaro.org Received: by 10.50.184.232 with SMTP id ex8csp70776igc; Sun, 9 Sep 2012 20:04:43 -0700 (PDT) Received: by 10.60.0.169 with SMTP id 9mr1211993oef.94.1347246283325; Sun, 09 Sep 2012 20:04:43 -0700 (PDT) Received: from mail-ob0-f178.google.com (mail-ob0-f178.google.com [209.85.214.178]) by mx.google.com with ESMTPS id is1si7284901obc.87.2012.09.09.20.04.43 (version=TLSv1/SSLv3 cipher=OTHER); Sun, 09 Sep 2012 20:04:43 -0700 (PDT) Received-SPF: pass (google.com: domain of robdclark@gmail.com designates 209.85.214.178 as permitted sender) client-ip=209.85.214.178; Authentication-Results: mx.google.com; spf=pass (google.com: domain of robdclark@gmail.com designates 209.85.214.178 as permitted sender) smtp.mail=robdclark@gmail.com; dkim=pass header.i=@gmail.com Received: by mail-ob0-f178.google.com with SMTP id wd20so2865791obb.37 for ; Sun, 09 Sep 2012 20:04:43 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=sender:from:to:cc:subject:date:message-id:x-mailer:in-reply-to :references; bh=RcbQp4WI6KiKe67ToGF0QKBDGJu5FTQO0ujN9aj+T7Y=; b=goKvV24B8GuCrgSuziYrUSKgJS/qP3Os7howJ+Nmh7uBO0qraZ6fCJ0frbceE07Xvv NKokWVuTZ2stscThu8pHZqcF/QWCehbD76KfzJZ70N0jFhbKUn92/cuks24laRTdZahv j5jBy5rQprzue+fDP+yIGlc7rF/NbHCfnNZjhf1AkdyqMYOyQuSKcM7K/sqt9BD3NIi+ TrxZ1m4dNa7OgNmEpozwuapfvlUrPT6OW9Elkk9RkcWCOOnd1uh+Lrbs65LrUeXyQxq5 RjQF6QlKWSoIOFmQ0rFYKIe4Dxp5CP2PTXzhn4up03t6l1CmjzS7RkKhAo5eJF1QY1SI s9kg== Received: by 10.60.19.195 with SMTP id h3mr12445107oee.102.1347246283103; Sun, 09 Sep 2012 20:04:43 -0700 (PDT) Received: from localhost (ppp-70-129-131-42.dsl.rcsntx.swbell.net. [70.129.131.42]) by mx.google.com with ESMTPS id a3sm9651882oeb.6.2012.09.09.20.04.42 (version=TLSv1/SSLv3 cipher=OTHER); Sun, 09 Sep 2012 20:04:42 -0700 (PDT) Sender: Rob Clark From: Rob Clark To: dri-devel@lists.freedesktop.org Cc: patches@linaro.org, ville.syrjala@linux.intel.com, jbarnes@virtuousgeek.org, daniel.vetter@ffwll.ch, Rob Clark Subject: [RFC 3/9] drm: add DRM_MODE_PROP_DYNAMIC property flag Date: Sun, 9 Sep 2012 22:03:16 -0500 Message-Id: <1347246202-24249-4-git-send-email-rob.clark@linaro.org> X-Mailer: git-send-email 1.7.9.5 In-Reply-To: <1347246202-24249-1-git-send-email-rob.clark@linaro.org> References: <1347246202-24249-1-git-send-email-rob.clark@linaro.org> X-Gm-Message-State: ALoCoQl23xREYpaSPrwp+TiGMDTVGGy9r2fo1j9C9e/uI34HyCwgRLfcDKctE9el4KaZ46mPTd5f From: Rob Clark This indicates to userspace that the property is something that can be set dynamically without requiring a "test" step to check if the hw is capable. This allows a userspace compositor, such as weston, to avoid an extra ioctl to check whether it needs to fall-back to GPU to composite some surface prior to submission of GPU render commands. --- include/drm/drm_mode.h | 9 +++++++++ 1 file changed, 9 insertions(+) diff --git a/include/drm/drm_mode.h b/include/drm/drm_mode.h index cee4c53..8cec2cf 100644 --- a/include/drm/drm_mode.h +++ b/include/drm/drm_mode.h @@ -232,6 +232,15 @@ struct drm_mode_get_connector { #define DRM_MODE_PROP_BLOB (1<<4) #define DRM_MODE_PROP_BITMASK (1<<5) /* bitmask of enumerated types */ #define DRM_MODE_PROP_OBJECT (1<<6) /* drm mode object */ +/* Properties that are not dynamic cannot safely be changed without a + * atomic-modeset / nuclear-pageflip test step. But if userspace is + * only changing dynamic properties, it is garanteed that the change + * will not exceed hw limits, so no test step is required. + * + * Note that fb_id properties are a bit ambiguous.. they of course can + * be changed dynamically, assuming the pixel format does not change. + */ +#define DRM_MODE_PROP_DYNAMIC (1<<24) struct drm_mode_property_enum { __u64 value;