From patchwork Wed Apr 11 23:42:45 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Lyude Paul X-Patchwork-Id: 10337639 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 4D96A6053B for ; Wed, 11 Apr 2018 23:44:32 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 3FD412811E for ; Wed, 11 Apr 2018 23:44:32 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 3495128469; Wed, 11 Apr 2018 23:44:32 +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=-5.2 required=2.0 tests=BAYES_00, MAILING_LIST_MULTI, RCVD_IN_DNSWL_MED autolearn=unavailable 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 7DBDC2811E for ; Wed, 11 Apr 2018 23:44:31 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id B51AF6E7A5; Wed, 11 Apr 2018 23:43:40 +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 6693A6E75E; Wed, 11 Apr 2018 23:43:27 +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 AFBB38DC43; Wed, 11 Apr 2018 23:43:26 +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 638E310EE6D9; Wed, 11 Apr 2018 23:43:26 +0000 (UTC) From: Lyude Paul To: intel-gfx@lists.freedesktop.org Date: Wed, 11 Apr 2018 19:42:45 -0400 Message-Id: <20180411234302.2896-7-lyude@redhat.com> In-Reply-To: <20180411234302.2896-1-lyude@redhat.com> References: <20180411234302.2896-1-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]); Wed, 11 Apr 2018 23:43:26 +0000 (UTC) X-Greylist: inspected by milter-greylist-4.5.16 (mx1.redhat.com [10.11.55.2]); Wed, 11 Apr 2018 23:43:26 +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 v8 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, dri-devel@lists.freedesktop.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 V7: - Fix CHECKPATCH errors --- drivers/gpu/drm/drm_dp_mst_topology.c | 10 ++++++++++ include/drm/drm_dp_mst_helper.h | 3 ++- 2 files changed, 12 insertions(+), 1 deletion(-) diff --git a/drivers/gpu/drm/drm_dp_mst_topology.c b/drivers/gpu/drm/drm_dp_mst_topology.c index fbd7888ebca8..981bd0f7d3ab 100644 --- a/drivers/gpu/drm/drm_dp_mst_topology.c +++ b/drivers/gpu/drm/drm_dp_mst_topology.c @@ -2096,6 +2096,15 @@ 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 +2180,7 @@ 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 ad1aaec8d514..3a7378cd5bd1 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)