From patchwork Thu May 25 14:19:15 2017 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jose Abreu X-Patchwork-Id: 9749553 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 28B1C60249 for ; Fri, 26 May 2017 01:18:08 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 1A6B4283D2 for ; Fri, 26 May 2017 01:18:08 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 0D9B9283DA; Fri, 26 May 2017 01:18:08 +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=-3.7 required=2.0 tests=BAYES_00, RCVD_IN_DNSWL_MED, RCVD_IN_SORBS_SPAM 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 4D1A8283F9 for ; Fri, 26 May 2017 01:18:07 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 1D2126EB36; Fri, 26 May 2017 01:17:37 +0000 (UTC) X-Original-To: dri-devel@lists.freedesktop.org Delivered-To: dri-devel@lists.freedesktop.org Received: from smtprelay.synopsys.com (smtprelay.synopsys.com [198.182.60.111]) by gabe.freedesktop.org (Postfix) with ESMTPS id 8A26089154 for ; Thu, 25 May 2017 14:21:07 +0000 (UTC) Received: from mailhost.synopsys.com (mailhost1.synopsys.com [10.12.238.239]) by smtprelay.synopsys.com (Postfix) with ESMTP id 4B98A10C0E94; Thu, 25 May 2017 07:21:07 -0700 (PDT) Received: from mailhost.synopsys.com (localhost [127.0.0.1]) by mailhost.synopsys.com (Postfix) with ESMTP id 292D4515; Thu, 25 May 2017 07:21:07 -0700 (PDT) Received: from joabreu-VirtualBox.internal.synopsys.com (joabreu-e7440.internal.synopsys.com [10.107.19.56]) by mailhost.synopsys.com (Postfix) with ESMTP id 7476F505; Thu, 25 May 2017 07:21:05 -0700 (PDT) From: Jose Abreu To: dri-devel@lists.freedesktop.org, linux-kernel@vger.kernel.org Subject: [PATCH v5 03/10] drm: Use new mode_valid() helpers in connector probe helper Date: Thu, 25 May 2017 15:19:15 +0100 Message-Id: X-Mailer: git-send-email 1.9.1 In-Reply-To: References: In-Reply-To: References: X-Mailman-Approved-At: Fri, 26 May 2017 01:17:29 +0000 Cc: Jose Abreu , Laurent Pinchart , Carlos Palminha X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" X-Virus-Scanned: ClamAV using ClamSMTP This changes the connector probe helper function to use the new encoder->mode_valid(), bridge->mode_valid() and crtc->mode_valid() helper callbacks to validate the modes. The new callbacks are optional so the behaviour remains the same if they are not implemented. If they are, then the code loops through all the connector's encodersXbridgesXcrtcs and calls the callback. If at least a valid encoderXbridgeXcrtc combination is found which accepts the mode then the function returns MODE_OK. Signed-off-by: Jose Abreu Reviewed-by: Daniel Vetter Cc: Carlos Palminha Cc: Dave Airlie Cc: Andrzej Hajda Cc: Laurent Pinchart Changes v3->v4: - Change function name (Laurent) Changes v2->v3: - Call also bridge->mode_valid (Daniel) Changes v1->v2: - Use new helpers suggested by Ville - Change documentation (Daniel) Reviewed-by: Neil Armstrong --- drivers/gpu/drm/drm_probe_helper.c | 67 +++++++++++++++++++++++++++++++++++--- 1 file changed, 63 insertions(+), 4 deletions(-) diff --git a/drivers/gpu/drm/drm_probe_helper.c b/drivers/gpu/drm/drm_probe_helper.c index f01abdc..00e6832 100644 --- a/drivers/gpu/drm/drm_probe_helper.c +++ b/drivers/gpu/drm/drm_probe_helper.c @@ -83,6 +83,61 @@ return MODE_OK; } +static enum drm_mode_status +drm_mode_validate_pipeline(struct drm_display_mode *mode, + struct drm_connector *connector) +{ + struct drm_device *dev = connector->dev; + uint32_t *ids = connector->encoder_ids; + enum drm_mode_status ret = MODE_OK; + unsigned int i; + + /* Step 1: Validate against connector */ + ret = drm_connector_mode_valid(connector, mode); + if (ret != MODE_OK) + return ret; + + /* Step 2: Validate against encoders and crtcs */ + for (i = 0; i < DRM_CONNECTOR_MAX_ENCODER; i++) { + struct drm_encoder *encoder = drm_encoder_find(dev, ids[i]); + struct drm_crtc *crtc; + + if (!encoder) + continue; + + ret = drm_encoder_mode_valid(encoder, mode); + if (ret != MODE_OK) { + /* No point in continuing for crtc check as this encoder + * will not accept the mode anyway. If all encoders + * reject the mode then, at exit, ret will not be + * MODE_OK. */ + continue; + } + + ret = drm_bridge_mode_valid(encoder->bridge, mode); + if (ret != MODE_OK) { + /* There is also no point in continuing for crtc check + * here. */ + continue; + } + + drm_for_each_crtc(crtc, dev) { + if (!drm_encoder_crtc_ok(encoder, crtc)) + continue; + + ret = drm_crtc_mode_valid(crtc, mode); + if (ret == MODE_OK) { + /* If we get to this point there is at least + * one combination of encoder+crtc that works + * for this mode. Lets return now. */ + return ret; + } + } + } + + return ret; +} + static int drm_helper_probe_add_cmdline_mode(struct drm_connector *connector) { struct drm_cmdline_mode *cmdline_mode; @@ -322,7 +377,11 @@ void drm_kms_helper_poll_enable(struct drm_device *dev) * - drm_mode_validate_flag() checks the modes against basic connector * capabilities (interlace_allowed,doublescan_allowed,stereo_allowed) * - the optional &drm_connector_helper_funcs.mode_valid helper can perform - * driver and/or hardware specific checks + * driver and/or sink specific checks + * - the optional &drm_crtc_helper_funcs.mode_valid, + * &drm_bridge_funcs.mode_valid and &drm_encoder_helper_funcs.mode_valid + * helpers can perform driver and/or source specific checks which are also + * enforced by the modeset/atomic helpers * * 5. Any mode whose status is not OK is pruned from the connector's modes list, * accompanied by a debug message indicating the reason for the mode's @@ -466,9 +525,9 @@ int drm_helper_probe_single_connector_modes(struct drm_connector *connector, if (mode->status == MODE_OK) mode->status = drm_mode_validate_flag(mode, mode_flags); - if (mode->status == MODE_OK && connector_funcs->mode_valid) - mode->status = connector_funcs->mode_valid(connector, - mode); + if (mode->status == MODE_OK) + mode->status = drm_mode_validate_pipeline(mode, + connector); } prune: