From patchwork Tue May 3 04:28:26 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Dave Airlie X-Patchwork-Id: 9000261 Return-Path: X-Original-To: patchwork-intel-gfx@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork2.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.136]) by patchwork2.web.kernel.org (Postfix) with ESMTP id D7D26BF440 for ; Tue, 3 May 2016 04:28:46 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id D61A32026D for ; Tue, 3 May 2016 04:28:45 +0000 (UTC) Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) by mail.kernel.org (Postfix) with ESMTP id E11FB20272 for ; Tue, 3 May 2016 04:28:44 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id EEB376E37F; Tue, 3 May 2016 04:28:36 +0000 (UTC) X-Original-To: intel-gfx@lists.freedesktop.org Delivered-To: intel-gfx@lists.freedesktop.org Received: from mx1.redhat.com (mx1.redhat.com [209.132.183.28]) by gabe.freedesktop.org (Postfix) with ESMTPS id 9072E6E37D; Tue, 3 May 2016 04:28:34 +0000 (UTC) Received: from int-mx10.intmail.prod.int.phx2.redhat.com (int-mx10.intmail.prod.int.phx2.redhat.com [10.5.11.23]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id 4581F9B0ED; Tue, 3 May 2016 04:28:34 +0000 (UTC) Received: from tyrion-bne-redhat-com.bne.redhat.com (dhcp-40-226.bne.redhat.com [10.64.40.226]) by int-mx10.intmail.prod.int.phx2.redhat.com (8.14.4/8.14.4) with ESMTP id u434SRUg025478; Tue, 3 May 2016 00:28:33 -0400 From: Dave Airlie To: dri-devel@lists.freedesktop.org, intel-gfx@lists.freedesktop.org Date: Tue, 3 May 2016 14:28:26 +1000 Message-Id: <1462249706-4759-6-git-send-email-airlied@gmail.com> In-Reply-To: <1462249706-4759-1-git-send-email-airlied@gmail.com> References: <1462249706-4759-1-git-send-email-airlied@gmail.com> X-Scanned-By: MIMEDefang 2.68 on 10.5.11.23 Subject: [Intel-gfx] [PATCH 6/6] drm/i915/mst: use reference counted connectors. (v3) X-BeenThere: intel-gfx@lists.freedesktop.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: Intel graphics driver community testing & development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Errors-To: intel-gfx-bounces@lists.freedesktop.org Sender: "Intel-gfx" X-Spam-Status: No, score=-5.2 required=5.0 tests=BAYES_00, DKIM_ADSP_CUSTOM_MED, FREEMAIL_FROM,RCVD_IN_DNSWL_MED,RP_MATCHES_RCVD,UNPARSEABLE_RELAY autolearn=unavailable version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP From: Dave Airlie Don't just free the connector when we get the destroy callback. Drop a reference to it, and set it's mst_port to NULL so no more mst work is done on it. v2: core mst accepts NULLs fine. Cleanup EDID code properly. v3: drop the extra reference we were taking. Reviewed-by: Daniel Vetter Signed-off-by: Dave Airlie --- drivers/gpu/drm/i915/intel_dp_mst.c | 43 +++++++++++++++++-------------------- drivers/gpu/drm/i915/intel_drv.h | 2 +- 2 files changed, 21 insertions(+), 24 deletions(-) diff --git a/drivers/gpu/drm/i915/intel_dp_mst.c b/drivers/gpu/drm/i915/intel_dp_mst.c index 94b4e83..b6bf7fd 100644 --- a/drivers/gpu/drm/i915/intel_dp_mst.c +++ b/drivers/gpu/drm/i915/intel_dp_mst.c @@ -109,7 +109,7 @@ static void intel_mst_disable_dp(struct intel_encoder *encoder) DRM_DEBUG_KMS("%d\n", intel_dp->active_mst_links); - drm_dp_mst_reset_vcpi_slots(&intel_dp->mst_mgr, intel_mst->port); + drm_dp_mst_reset_vcpi_slots(&intel_dp->mst_mgr, intel_mst->connector->port); ret = drm_dp_update_payload_part1(&intel_dp->mst_mgr); if (ret) { @@ -134,10 +134,11 @@ static void intel_mst_post_disable_dp(struct intel_encoder *encoder) /* and this can also fail */ drm_dp_update_payload_part2(&intel_dp->mst_mgr); - drm_dp_mst_deallocate_vcpi(&intel_dp->mst_mgr, intel_mst->port); + drm_dp_mst_deallocate_vcpi(&intel_dp->mst_mgr, intel_mst->connector->port); intel_dp->active_mst_links--; - intel_mst->port = NULL; + + intel_mst->connector = NULL; if (intel_dp->active_mst_links == 0) { intel_dig_port->base.post_disable(&intel_dig_port->base); intel_dp_sink_dpms(intel_dp, DRM_MODE_DPMS_OFF); @@ -177,7 +178,8 @@ static void intel_mst_pre_enable_dp(struct intel_encoder *encoder) found->encoder = encoder; DRM_DEBUG_KMS("%d\n", intel_dp->active_mst_links); - intel_mst->port = found->port; + + intel_mst->connector = found; if (intel_dp->active_mst_links == 0) { intel_prepare_ddi_buffer(&intel_dig_port->base); @@ -195,7 +197,7 @@ static void intel_mst_pre_enable_dp(struct intel_encoder *encoder) } ret = drm_dp_mst_allocate_vcpi(&intel_dp->mst_mgr, - intel_mst->port, + intel_mst->connector->port, intel_crtc->config->pbn, &slots); if (ret == false) { DRM_ERROR("failed to allocate vcpi\n"); @@ -244,7 +246,7 @@ static bool intel_dp_mst_enc_get_hw_state(struct intel_encoder *encoder, { struct intel_dp_mst_encoder *intel_mst = enc_to_mst(&encoder->base); *pipe = intel_mst->pipe; - if (intel_mst->port) + if (intel_mst->connector) return true; return false; } @@ -308,10 +310,11 @@ static int intel_dp_mst_get_ddc_modes(struct drm_connector *connector) struct edid *edid; int ret; - edid = drm_dp_mst_get_edid(connector, &intel_dp->mst_mgr, intel_connector->port); - if (!edid) - return 0; + if (!intel_dp) { + return intel_connector_update_modes(connector, NULL); + } + edid = drm_dp_mst_get_edid(connector, &intel_dp->mst_mgr, intel_connector->port); ret = intel_connector_update_modes(connector, edid); kfree(edid); @@ -324,6 +327,8 @@ intel_dp_mst_detect(struct drm_connector *connector, bool force) struct intel_connector *intel_connector = to_intel_connector(connector); struct intel_dp *intel_dp = intel_connector->mst_port; + if (!intel_dp) + return connector_status_disconnected; return drm_dp_mst_detect_port(connector, &intel_dp->mst_mgr, intel_connector->port); } @@ -389,6 +394,8 @@ static struct drm_encoder *intel_mst_atomic_best_encoder(struct drm_connector *c struct intel_dp *intel_dp = intel_connector->mst_port; struct intel_crtc *crtc = to_intel_crtc(state->crtc); + if (!intel_dp) + return NULL; return &intel_dp->mst_encoders[crtc->pipe]->base.base; } @@ -396,6 +403,8 @@ static struct drm_encoder *intel_mst_best_encoder(struct drm_connector *connecto { struct intel_connector *intel_connector = to_intel_connector(connector); struct intel_dp *intel_dp = intel_connector->mst_port; + if (!intel_dp) + return NULL; return &intel_dp->mst_encoders[0]->base.base; } @@ -506,23 +515,11 @@ static void intel_dp_destroy_mst_connector(struct drm_dp_mst_topology_mgr *mgr, /* need to nuke the connector */ drm_modeset_lock_all(dev); - if (connector->state->crtc) { - struct drm_mode_set set; - int ret; - - memset(&set, 0, sizeof(set)); - set.crtc = connector->state->crtc, - - ret = drm_atomic_helper_set_config(&set); - - WARN(ret, "Disabling mst crtc failed with %i\n", ret); - } - intel_connector_remove_from_fbdev(intel_connector); - drm_connector_cleanup(connector); + intel_connector->mst_port = NULL; drm_modeset_unlock_all(dev); - kfree(intel_connector); + drm_connector_unreference(&intel_connector->base); DRM_DEBUG_KMS("\n"); } diff --git a/drivers/gpu/drm/i915/intel_drv.h b/drivers/gpu/drm/i915/intel_drv.h index e0fcfa1..288135de 100644 --- a/drivers/gpu/drm/i915/intel_drv.h +++ b/drivers/gpu/drm/i915/intel_drv.h @@ -878,7 +878,7 @@ struct intel_dp_mst_encoder { struct intel_encoder base; enum pipe pipe; struct intel_digital_port *primary; - void *port; /* store this opaque as its illegal to dereference it */ + struct intel_connector *connector; }; static inline enum dpio_channel