From patchwork Tue Aug 11 20:04:57 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Lyude Paul X-Patchwork-Id: 11709613 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id BF05C13B6 for ; Tue, 11 Aug 2020 20:07:05 +0000 (UTC) Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 9DE6220825 for ; Tue, 11 Aug 2020 20:07:05 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (1024-bit key) header.d=redhat.com header.i=@redhat.com header.b="bFvbcCMg" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 9DE6220825 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=redhat.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=intel-gfx-bounces@lists.freedesktop.org Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 83E3C6E83A; Tue, 11 Aug 2020 20:07:03 +0000 (UTC) X-Original-To: intel-gfx@lists.freedesktop.org Delivered-To: intel-gfx@lists.freedesktop.org Received: from us-smtp-delivery-1.mimecast.com (us-smtp-2.mimecast.com [207.211.31.81]) by gabe.freedesktop.org (Postfix) with ESMTPS id 3C5F66E83E for ; Tue, 11 Aug 2020 20:07:02 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1597176421; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=0PGG//CtuoOTYv2p77D8V5k7E6MAMYxPO8Vv8577Zp8=; b=bFvbcCMguCjvU111njve4CvT0OxiEz38KcIOnviM4Cy1Rc67fycIM/sNuAqgCKPkg2eT0z iail5LYKthbWIeOFnPbEEHpBqLdePuSqLjhqusF/HWQCRNN5RZ3sb86ySjWza1AMSiN53P iYlWIP6XugPyJrWurMWpQBxACfF1ZWU= Received: from mimecast-mx01.redhat.com (mimecast-mx01.redhat.com [209.132.183.4]) (Using TLS) by relay.mimecast.com with ESMTP id us-mta-255-VKygY5HSMxeH3V02zJJllw-1; Tue, 11 Aug 2020 16:06:58 -0400 X-MC-Unique: VKygY5HSMxeH3V02zJJllw-1 Received: from smtp.corp.redhat.com (int-mx04.intmail.prod.int.phx2.redhat.com [10.5.11.14]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id 383BA1DE1; Tue, 11 Aug 2020 20:06:57 +0000 (UTC) Received: from Ruby.redhat.com (ovpn-119-184.rdu2.redhat.com [10.10.119.184]) by smtp.corp.redhat.com (Postfix) with ESMTP id 44FEA5D9D7; Tue, 11 Aug 2020 20:06:56 +0000 (UTC) From: Lyude Paul To: nouveau@lists.freedesktop.org, intel-gfx@lists.freedesktop.org, dri-devel@lists.freedesktop.org Date: Tue, 11 Aug 2020 16:04:57 -0400 Message-Id: <20200811200457.134743-21-lyude@redhat.com> In-Reply-To: <20200811200457.134743-1-lyude@redhat.com> References: <20200811200457.134743-1-lyude@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.14 Subject: [Intel-gfx] [RFC 20/20] drm/nouveau/kms: Start using drm_dp_read_dpcd_caps() X-BeenThere: intel-gfx@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Intel graphics driver community testing & development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: David Airlie , Ben Skeggs , open list Errors-To: intel-gfx-bounces@lists.freedesktop.org Sender: "Intel-gfx" Now that we've extracted i915's code for reading both the normal DPCD caps and extended DPCD caps into a shared helper, let's start using this in nouveau to enable us to start checking extended DPCD caps for free. Signed-off-by: Lyude Paul Reviewed-by: Ben Skeggs --- drivers/gpu/drm/nouveau/nouveau_dp.c | 14 ++++++-------- 1 file changed, 6 insertions(+), 8 deletions(-) diff --git a/drivers/gpu/drm/nouveau/nouveau_dp.c b/drivers/gpu/drm/nouveau/nouveau_dp.c index f41fa513023fd..a4e07d116972f 100644 --- a/drivers/gpu/drm/nouveau/nouveau_dp.c +++ b/drivers/gpu/drm/nouveau/nouveau_dp.c @@ -55,15 +55,13 @@ nouveau_dp_probe_dpcd(struct nouveau_connector *nv_connector, int ret; u8 *dpcd = outp->dp.dpcd; - ret = drm_dp_dpcd_read(aux, DP_DPCD_REV, dpcd, DP_RECEIVER_CAP_SIZE); - if (ret == DP_RECEIVER_CAP_SIZE && dpcd[DP_DPCD_REV]) { - ret = drm_dp_read_desc(aux, &outp->dp.desc, - drm_dp_is_branch(dpcd)); - if (ret < 0) - goto out; - } else { + ret = drm_dp_read_dpcd_caps(aux, dpcd); + if (ret < 0) + goto out; + + ret = drm_dp_read_desc(aux, &outp->dp.desc, drm_dp_is_branch(dpcd)); + if (ret < 0) goto out; - } if (nouveau_mst) { mstm = outp->dp.mstm;