From patchwork Mon Apr 2 22:47:42 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Lyude Paul X-Patchwork-Id: 10320477 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id 219C360116 for ; Mon, 2 Apr 2018 22:48:54 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 165362892D for ; Mon, 2 Apr 2018 22:48:54 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 0AEE228938; Mon, 2 Apr 2018 22:48:54 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-4.2 required=2.0 tests=BAYES_00, RCVD_IN_DNSWL_MED autolearn=ham version=3.3.1 Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (using TLSv1.2 with cipher DHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.wl.linuxfoundation.org (Postfix) with ESMTPS id B7C412892D for ; Mon, 2 Apr 2018 22:48:53 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 032B46E479; Mon, 2 Apr 2018 22:48:31 +0000 (UTC) X-Original-To: intel-gfx@lists.freedesktop.org Delivered-To: intel-gfx@lists.freedesktop.org Received: from mx1.redhat.com (mx3-rdu2.redhat.com [66.187.233.73]) by gabe.freedesktop.org (Postfix) with ESMTPS id 5B3D16E24F; Mon, 2 Apr 2018 22:48:29 +0000 (UTC) Received: from smtp.corp.redhat.com (int-mx03.intmail.prod.int.rdu2.redhat.com [10.11.54.3]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id 6FA1B722E8; Mon, 2 Apr 2018 22:48:28 +0000 (UTC) Received: from malachite.bss.redhat.com (dhcp-10-20-1-55.bss.redhat.com [10.20.1.55]) by smtp.corp.redhat.com (Postfix) with ESMTP id 230701101E88; Mon, 2 Apr 2018 22:48:28 +0000 (UTC) From: Lyude Paul To: intel-gfx@lists.freedesktop.org, dri-devel@lists.freedesktop.org Date: Mon, 2 Apr 2018 18:47:42 -0400 Message-Id: <20180402224800.16080-7-lyude@redhat.com> In-Reply-To: <20180402224800.16080-1-lyude@redhat.com> References: <20180402224800.16080-1-lyude@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.78 on 10.11.54.3 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.11.55.2]); Mon, 02 Apr 2018 22:48:28 +0000 (UTC) X-Greylist: inspected by milter-greylist-4.5.16 (mx1.redhat.com [10.11.55.2]); Mon, 02 Apr 2018 22:48:28 +0000 (UTC) for IP:'10.11.54.3' DOMAIN:'int-mx03.intmail.prod.int.rdu2.redhat.com' HELO:'smtp.corp.redhat.com' FROM:'lyude@redhat.com' RCPT:'' Subject: [Intel-gfx] [PATCH v5 06/10] drm/dp_mst: Add reset_state callback to topology mgr X-BeenThere: intel-gfx@lists.freedesktop.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: Intel graphics driver community testing & development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: David Airlie , linux-kernel@vger.kernel.org Errors-To: intel-gfx-bounces@lists.freedesktop.org Sender: "Intel-gfx" X-Virus-Scanned: ClamAV using ClamSMTP This gives drivers subclassing drm_dp_mst_topology_state the ability to prepare their topology states for a new hub to be connected whenever it's detected that the currently connected topology has been disconnected from the system. We'll need this in order to correctly track RX capabilities in i915 from the topology's atomic state. Cc: Manasi Navare Cc: Ville Syrjälä Signed-off-by: Lyude Paul --- drivers/gpu/drm/drm_dp_mst_topology.c | 11 +++++++++++ include/drm/drm_dp_mst_helper.h | 3 ++- 2 files changed, 13 insertions(+), 1 deletion(-) diff --git a/drivers/gpu/drm/drm_dp_mst_topology.c b/drivers/gpu/drm/drm_dp_mst_topology.c index 8a72eed0ae05..b55fd545d6a3 100644 --- a/drivers/gpu/drm/drm_dp_mst_topology.c +++ b/drivers/gpu/drm/drm_dp_mst_topology.c @@ -2096,6 +2096,16 @@ static bool drm_dp_get_vc_payload_bw(int dp_link_bw, return true; } +static void drm_dp_mst_topology_reset_state(struct drm_dp_mst_topology_mgr *mgr) +{ + struct drm_dp_mst_topology_state *state = + to_dp_mst_topology_state(mgr->base.state); + + + if (mgr->cbs->reset_state) + mgr->cbs->reset_state(state); +} + /** * drm_dp_mst_topology_mgr_set_mst() - Set the MST state for a topology manager * @mgr: manager to set state for @@ -2171,6 +2181,7 @@ int drm_dp_mst_topology_mgr_set_mst(struct drm_dp_mst_topology_mgr *mgr, bool ms mgr->payload_mask = 0; set_bit(0, &mgr->payload_mask); mgr->vcpi_mask = 0; + drm_dp_mst_topology_reset_state(mgr); } out_unlock: diff --git a/include/drm/drm_dp_mst_helper.h b/include/drm/drm_dp_mst_helper.h index b42922987470..fd856c371a6e 100644 --- a/include/drm/drm_dp_mst_helper.h +++ b/include/drm/drm_dp_mst_helper.h @@ -381,6 +381,7 @@ struct drm_dp_sideband_msg_tx { /* sideband msg handler */ struct drm_dp_mst_topology_mgr; +struct drm_dp_mst_topology_state; struct drm_dp_mst_topology_cbs { /* create a connector for a port */ struct drm_connector *(*add_connector)(struct drm_dp_mst_topology_mgr *mgr, struct drm_dp_mst_port *port, const char *path); @@ -388,7 +389,7 @@ struct drm_dp_mst_topology_cbs { void (*destroy_connector)(struct drm_dp_mst_topology_mgr *mgr, struct drm_connector *connector); void (*hotplug)(struct drm_dp_mst_topology_mgr *mgr); - + void (*reset_state)(struct drm_dp_mst_topology_state *state); }; #define DP_MAX_PAYLOAD (sizeof(unsigned long) * 8)