From patchwork Tue Jun 7 11:47:56 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Boris BREZILLON X-Patchwork-Id: 9160947 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 1DDD160572 for ; Tue, 7 Jun 2016 12:01:04 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 0E4932793B for ; Tue, 7 Jun 2016 12:01:04 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 02BC3281FE; Tue, 7 Jun 2016 12:01:03 +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=-5.9 required=2.0 tests=BAYES_00,FSL_HELO_HOME, RCVD_IN_DNSWL_HI autolearn=unavailable version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 44869281D2 for ; Tue, 7 Jun 2016 12:01:01 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754922AbcFGL7u (ORCPT ); Tue, 7 Jun 2016 07:59:50 -0400 Received: from down.free-electrons.com ([37.187.137.238]:59951 "EHLO mail.free-electrons.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1754679AbcFGLsV (ORCPT ); Tue, 7 Jun 2016 07:48:21 -0400 Received: by mail.free-electrons.com (Postfix, from userid 110) id E50DB2B0; Tue, 7 Jun 2016 13:48:18 +0200 (CEST) Received: from bbrezillon.home (LStLambert-657-1-97-87.w90-63.abo.wanadoo.fr [90.63.216.87]) by mail.free-electrons.com (Postfix) with ESMTPSA id EFFDB202; Tue, 7 Jun 2016 13:48:17 +0200 (CEST) From: Boris Brezillon To: David Airlie , Daniel Vetter , dri-devel@lists.freedesktop.org, Daniel Vetter Cc: linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, Kukjin Kim , Krzysztof Kozlowski , linux-samsung-soc@vger.kernel.org, intel-gfx@lists.freedesktop.org, Jani Nikula , Alexey Brodkin , Inki Dae , Joonyoung Shim , Seung-Woo Kim , Kyungmin Park , Stefan Agner , Alison Wang , Matthias Brugger , Rob Clark , Laurent Pinchart , Mark Yao , Heiko Stuebner , Benjamin Gaignard , Vincent Abriou , Maxime Ripard , Chen-Yu Tsai , Thierry Reding , Stephen Warren , Alexandre Courbot , Eric Anholt , Gerd Hoffmann , linux-mediatek@lists.infradead.org, linux-arm-msm@vger.kernel.org, freedreno@lists.freedesktop.org, linux-renesas-soc@vger.kernel.org, linux-rockchip@lists.infradead.org, linux-tegra@vger.kernel.org, virtualization@lists.linux-foundation.org, Boris Brezillon Subject: [PATCH v2 01/20] drm/atomic: Fix remaining places where !funcs->best_encoder is valid Date: Tue, 7 Jun 2016 13:47:56 +0200 Message-Id: <1465300095-16971-2-git-send-email-boris.brezillon@free-electrons.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1465300095-16971-1-git-send-email-boris.brezillon@free-electrons.com> References: <1465300095-16971-1-git-send-email-boris.brezillon@free-electrons.com> Sender: linux-samsung-soc-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-samsung-soc@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP Adapt drm_pick_crtcs() and update_connector_routing() to fallback to drm_atomic_helper_best_encoder() if funcs->best_encoder() is NULL so that DRM drivers can leave this hook unassigned if they know they want to use drm_atomic_helper_best_encoder(). Update the vtables documentation accordingly. Signed-off-by: Boris Brezillon --- drivers/gpu/drm/drm_atomic_helper.c | 4 +++- drivers/gpu/drm/drm_fb_helper.c | 13 ++++++++++++- include/drm/drm_modeset_helper_vtables.h | 10 ++++++++-- 3 files changed, 23 insertions(+), 4 deletions(-) diff --git a/drivers/gpu/drm/drm_atomic_helper.c b/drivers/gpu/drm/drm_atomic_helper.c index f6a3350..849d029 100644 --- a/drivers/gpu/drm/drm_atomic_helper.c +++ b/drivers/gpu/drm/drm_atomic_helper.c @@ -300,8 +300,10 @@ update_connector_routing(struct drm_atomic_state *state, if (funcs->atomic_best_encoder) new_encoder = funcs->atomic_best_encoder(connector, connector_state); - else + else if (funcs->best_encoder) new_encoder = funcs->best_encoder(connector); + else + new_encoder = drm_atomic_helper_best_encoder(connector); if (!new_encoder) { DRM_DEBUG_ATOMIC("No suitable encoder found for [CONNECTOR:%d:%s]\n", diff --git a/drivers/gpu/drm/drm_fb_helper.c b/drivers/gpu/drm/drm_fb_helper.c index 7c2eb75..d44389a 100644 --- a/drivers/gpu/drm/drm_fb_helper.c +++ b/drivers/gpu/drm/drm_fb_helper.c @@ -2000,7 +2000,18 @@ static int drm_pick_crtcs(struct drm_fb_helper *fb_helper, my_score++; connector_funcs = connector->helper_private; - encoder = connector_funcs->best_encoder(connector); + + /* + * If the DRM device implements atomic hooks and ->best_encoder() is + * NULL we fallback to the default drm_atomic_helper_best_encoder() + * helper. + */ + if (fb_helper->dev->mode_config.funcs->atomic_commit && + !connector_funcs->best_encoder) + encoder = drm_atomic_helper_best_encoder(connector); + else + encoder = connector_funcs->best_encoder(connector); + if (!encoder) goto out; diff --git a/include/drm/drm_modeset_helper_vtables.h b/include/drm/drm_modeset_helper_vtables.h index d4619dc..4e7a53b 100644 --- a/include/drm/drm_modeset_helper_vtables.h +++ b/include/drm/drm_modeset_helper_vtables.h @@ -736,6 +736,11 @@ struct drm_connector_helper_funcs { * inspect dynamic configuration state should instead use * @atomic_best_encoder. * + * You can leave this function to NULL if the connector is only + * attached to a single encoder and you are using the atomic helpers. + * In this case, the core will call drm_atomic_helper_best_encoder() + * for you. + * * RETURNS: * * Encoder that should be used for the given connector and connector @@ -752,8 +757,9 @@ struct drm_connector_helper_funcs { * need to select the best encoder depending upon the desired * configuration and can't select it statically. * - * This function is used by drm_atomic_helper_check_modeset() and either - * this or @best_encoder is required. + * This function is used by drm_atomic_helper_check_modeset(). + * If it is not implemented, the core will fallback to @best_encoder + * (or drm_atomic_helper_best_encoder() if @best_encoder is NULL). * * NOTE: *