From patchwork Sat May 15 20:46:56 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Marek Vasut X-Patchwork-Id: 12260003 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=-16.5 required=3.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=ham 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 ED6E9C433ED for ; Sat, 15 May 2021 20:47:18 +0000 (UTC) Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 8C9986134F for ; Sat, 15 May 2021 20:47:18 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 8C9986134F Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=denx.de Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=dri-devel-bounces@lists.freedesktop.org Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id B1A0F6E448; Sat, 15 May 2021 20:47:17 +0000 (UTC) Received: from phobos.denx.de (phobos.denx.de [85.214.62.61]) by gabe.freedesktop.org (Postfix) with ESMTPS id 057496E448 for ; Sat, 15 May 2021 20:47:16 +0000 (UTC) Received: from tr.lan (ip-89-176-112-137.net.upcbroadband.cz [89.176.112.137]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits)) (No client certificate requested) (Authenticated sender: marex@denx.de) by phobos.denx.de (Postfix) with ESMTPSA id 1A55082B36; Sat, 15 May 2021 22:47:15 +0200 (CEST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=denx.de; s=phobos-20191101; t=1621111635; bh=Msdi4EgOgI6YRke3ZH8keGty80PBxiOM+J79VeOtK+8=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=xiHAHygBqKvq+9VQYExqDLLBRgtldScskrSvRwBXZLiH1r42r5lru49bqVWXF8NnC D1Ji2N7ba7MfGF5u5LqU3aVPIwmdvXYk1d6MkV5wowNeNPF8XzCA1FXAnxU7AYPDLE otK+ndk8dOwlZvkvEABB56SuBcHmo9MJbgNLHb8FQJk6c0BHPtpThtiOONr/91Jr3L 2/fTCvWX3amWRHaXCRgZhCe9isak2vvYBhL9xnhCVJC+7Gdvj5f7KgUbkSiMqknONG 9sG3bvtpIwJlqenvs/VGMn/fTpF0QHcd3nNNtu/JBw94p/bM3OGaIxl7Yh4b8AlIjY tvi+yHXT5nJ8A== From: Marek Vasut To: dri-devel@lists.freedesktop.org Subject: [PATCH 2/2] drm/bridge: lvds-codec: Add support for LVDS data mapping select Date: Sat, 15 May 2021 22:46:56 +0200 Message-Id: <20210515204656.367442-2-marex@denx.de> X-Mailer: git-send-email 2.30.2 In-Reply-To: <20210515204656.367442-1-marex@denx.de> References: <20210515204656.367442-1-marex@denx.de> MIME-Version: 1.0 X-Virus-Scanned: clamav-milter 0.102.4 at phobos.denx.de X-Virus-Status: Clean X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Marek Vasut , Sam Ravnborg , ch@denx.de, Laurent Pinchart Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" Decoder input LVDS format is a property of the decoder chip or even its strapping. Handle data-mapping the same way lvds-panel does. In case data-mapping is not present, do nothing, since there are still legacy bindings which do not specify this property. Signed-off-by: Marek Vasut Cc: Laurent Pinchart Cc: Sam Ravnborg To: dri-devel@lists.freedesktop.org --- drivers/gpu/drm/bridge/lvds-codec.c | 50 +++++++++++++++++++++++++++++ 1 file changed, 50 insertions(+) diff --git a/drivers/gpu/drm/bridge/lvds-codec.c b/drivers/gpu/drm/bridge/lvds-codec.c index 8a7cb267ab14..33f992d52902 100644 --- a/drivers/gpu/drm/bridge/lvds-codec.c +++ b/drivers/gpu/drm/bridge/lvds-codec.c @@ -23,6 +23,7 @@ struct lvds_codec { struct regulator *vcc; struct gpio_desc *powerdown_gpio; u32 connector_type; + unsigned int bus_format; }; static inline struct lvds_codec *to_lvds_codec(struct drm_bridge *bridge) @@ -69,10 +70,33 @@ static void lvds_codec_disable(struct drm_bridge *bridge) "Failed to disable regulator \"vcc\": %d\n", ret); } +static bool lvds_codec_mode_fixup(struct drm_bridge *bridge, + const struct drm_display_mode *mode, + struct drm_display_mode *adj) +{ + struct lvds_codec *lvds_codec = to_lvds_codec(bridge); + struct drm_encoder *encoder = bridge->encoder; + struct drm_device *ddev = encoder->dev; + struct drm_connector *connector; + + /* If 'data-mapping' was not specified, do nothing. */ + if (!lvds_codec->bus_format) + return true; + + /* Patch in the LVDS format */ + list_for_each_entry(connector, &ddev->mode_config.connector_list, head) { + drm_display_info_set_bus_formats(&connector->display_info, + &lvds_codec->bus_format, 1); + } + + return true; +} + static const struct drm_bridge_funcs funcs = { .attach = lvds_codec_attach, .enable = lvds_codec_enable, .disable = lvds_codec_disable, + .mode_fixup = lvds_codec_mode_fixup, }; static int lvds_codec_probe(struct platform_device *pdev) @@ -81,6 +105,7 @@ static int lvds_codec_probe(struct platform_device *pdev) struct device_node *panel_node; struct drm_panel *panel; struct lvds_codec *lvds_codec; + const char *mapping; u32 val; lvds_codec = devm_kzalloc(dev, sizeof(*lvds_codec), GFP_KERNEL); @@ -133,6 +158,31 @@ static int lvds_codec_probe(struct platform_device *pdev) DRM_BUS_FLAG_PIXDATA_SAMPLE_NEGEDGE; } + /* + * Decoder input LVDS format is a property of the decoder chip or even + * its strapping. Handle data-mapping the same way lvds-panel does. In + * case data-mapping is not present, do nothing, since there are still + * legacy bindings which do not specify this property. + */ + if (lvds_codec->connector_type != DRM_MODE_CONNECTOR_LVDS) { + ret = of_property_read_string(dev->of_node, "data-mapping", + &mapping); + if (ret < 0) { + dev_err(dev, "missing 'data-mapping' DT property\n"); + } else { + if (!strcmp(mapping, "jeida-18")) { + lvds_codec->bus_format = MEDIA_BUS_FMT_RGB666_1X7X3_SPWG; + } else if (!strcmp(mapping, "jeida-24")) { + lvds_codec->bus_format = MEDIA_BUS_FMT_RGB888_1X7X4_JEIDA; + } else if (!strcmp(mapping, "vesa-24")) { + lvds_codec->bus_format = MEDIA_BUS_FMT_RGB888_1X7X4_SPWG; + } else { + dev_err(dev, "invalid 'data-mapping' DT property\n"); + return -EINVAL; + } + } + } + /* * The panel_bridge bridge is attached to the panel's of_node, * but we need a bridge attached to our of_node for our user