From patchwork Fri Dec 4 22:01:38 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Laurent Pinchart X-Patchwork-Id: 11952429 X-Patchwork-Delegate: kieran@bingham.xyz Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-18.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER, INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED, USER_AGENT_GIT autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 7BDC5C4361A for ; Fri, 4 Dec 2020 22:03:38 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 4B48C22CAE for ; Fri, 4 Dec 2020 22:03:38 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727945AbgLDWDi (ORCPT ); Fri, 4 Dec 2020 17:03:38 -0500 Received: from perceval.ideasonboard.com ([213.167.242.64]:52062 "EHLO perceval.ideasonboard.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726134AbgLDWDh (ORCPT ); Fri, 4 Dec 2020 17:03:37 -0500 Received: from pendragon.lan (62-78-145-57.bb.dnainternet.fi [62.78.145.57]) by perceval.ideasonboard.com (Postfix) with ESMTPSA id 1C59A1A4E; Fri, 4 Dec 2020 23:01:49 +0100 (CET) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=ideasonboard.com; s=mail; t=1607119309; bh=HOnaX6KfpKoC/W74ZpcKUcAVLIntcsiKk6xTRXkEC0s=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=TZaKIk56ogLnNzp23WV/F0Z0Wk9vJc4ean3IhqQTxvGuyb06hW4otVoPJRWf98mtM 7RhhM2bwIe40ajMiqrzWRKzBUiB79AQmonCsY7OmwTGfzW61i9igGTipg7IVDHdoMQ hIkJsGvCpAhOSspr8MTIYsEiTGp94w5xxVXBWlGU= From: Laurent Pinchart To: dri-devel@lists.freedesktop.org Cc: linux-renesas-soc@vger.kernel.org, Kieran Bingham , Kuninori Morimoto Subject: [PATCH 8/9] drm: rcar-du: Skip encoder allocation for LVDS1 in dual-link mode Date: Sat, 5 Dec 2020 00:01:38 +0200 Message-Id: <20201204220139.15272-9-laurent.pinchart+renesas@ideasonboard.com> X-Mailer: git-send-email 2.27.0 In-Reply-To: <20201204220139.15272-1-laurent.pinchart+renesas@ideasonboard.com> References: <20201204220139.15272-1-laurent.pinchart+renesas@ideasonboard.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-renesas-soc@vger.kernel.org The rcar-du driver skips registration of the encoder for the LVDS1 output when LVDS is used in dual-link mode, as the LVDS0 and LVDS1 links are bundled and handled through the LVDS0 output. It however still allocates the encoder and immediately destroys it, which is pointless. Skip allocation of the encoder altogether in that case. Signed-off-by: Laurent Pinchart Reviewed-by: Jacopo Mondi Reviewed-by: Kieran Bingham --- drivers/gpu/drm/rcar-du/rcar_du_encoder.c | 51 ++++++++++------------- 1 file changed, 22 insertions(+), 29 deletions(-) diff --git a/drivers/gpu/drm/rcar-du/rcar_du_encoder.c b/drivers/gpu/drm/rcar-du/rcar_du_encoder.c index e4f35a88d00f..49c0b27e2f5a 100644 --- a/drivers/gpu/drm/rcar-du/rcar_du_encoder.c +++ b/drivers/gpu/drm/rcar-du/rcar_du_encoder.c @@ -65,17 +65,6 @@ int rcar_du_encoder_init(struct rcar_du_device *rcdu, struct drm_bridge *bridge; int ret; - renc = kzalloc(sizeof(*renc), GFP_KERNEL); - if (renc == NULL) - return -ENOMEM; - - rcdu->encoders[output] = renc; - renc->output = output; - encoder = rcar_encoder_to_drm_encoder(renc); - - dev_dbg(rcdu->dev, "initializing encoder %pOF for output %u\n", - enc_node, output); - /* * Locate the DRM bridge from the DT node. For the DPAD outputs, if the * DT node has a single port, assume that it describes a panel and @@ -86,23 +75,17 @@ int rcar_du_encoder_init(struct rcar_du_device *rcdu, rcar_du_encoder_count_ports(enc_node) == 1) { struct drm_panel *panel = of_drm_find_panel(enc_node); - if (IS_ERR(panel)) { - ret = PTR_ERR(panel); - goto error; - } + if (IS_ERR(panel)) + return PTR_ERR(panel); bridge = devm_drm_panel_bridge_add_typed(rcdu->dev, panel, DRM_MODE_CONNECTOR_DPI); - if (IS_ERR(bridge)) { - ret = PTR_ERR(bridge); - goto error; - } + if (IS_ERR(bridge)) + return PTR_ERR(bridge); } else { bridge = of_drm_find_bridge(enc_node); - if (!bridge) { - ret = -EPROBE_DEFER; - goto error; - } + if (!bridge) + return -EPROBE_DEFER; if (output == RCAR_DU_OUTPUT_LVDS0 || output == RCAR_DU_OUTPUT_LVDS1) @@ -110,16 +93,26 @@ int rcar_du_encoder_init(struct rcar_du_device *rcdu, } /* - * On Gen3 skip the LVDS1 output if the LVDS1 encoder is used as a - * companion for LVDS0 in dual-link mode. + * Create and initialize the encoder. On Gen3 skip the LVDS1 output if + * the LVDS1 encoder is used as a companion for LVDS0 in dual-link + * mode. */ if (rcdu->info->gen >= 3 && output == RCAR_DU_OUTPUT_LVDS1) { - if (rcar_lvds_dual_link(bridge)) { - ret = -ENOLINK; - goto error; - } + if (rcar_lvds_dual_link(bridge)) + return -ENOLINK; } + renc = kzalloc(sizeof(*renc), GFP_KERNEL); + if (renc == NULL) + return -ENOMEM; + + rcdu->encoders[output] = renc; + renc->output = output; + encoder = rcar_encoder_to_drm_encoder(renc); + + dev_dbg(rcdu->dev, "initializing encoder %pOF for output %u\n", + enc_node, output); + ret = drm_encoder_init(&rcdu->ddev, encoder, &rcar_du_encoder_funcs, DRM_MODE_ENCODER_NONE, NULL); if (ret < 0)