From patchwork Mon Jun 6 15:24:24 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Hsin-Yi Wang X-Patchwork-Id: 12870563 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org 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 smtp.lore.kernel.org (Postfix) with ESMTPS id D6673C43334 for ; Mon, 6 Jun 2022 15:24:42 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id EF4D21122F0; Mon, 6 Jun 2022 15:24:41 +0000 (UTC) Received: from mail-pl1-x62b.google.com (mail-pl1-x62b.google.com [IPv6:2607:f8b0:4864:20::62b]) by gabe.freedesktop.org (Postfix) with ESMTPS id 687C61122F0 for ; Mon, 6 Jun 2022 15:24:41 +0000 (UTC) Received: by mail-pl1-x62b.google.com with SMTP id f9so1912591plg.0 for ; Mon, 06 Jun 2022 08:24:41 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=chromium.org; s=google; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=/LOT6rcj75BLu5PAhhZSBrZhENYGfSEJ9VcTy2ymZ8A=; b=WEtPtsSlp7epK+M3w4yaaaGS/p+B2+4rpNHJeUsP9pApwkHOD6/CvyYeaubs73Yt/w oPoFAMzIMC++OPvNhqyBh/HoAvv2qP66rFYT0/uEsedGJhm18S6d890znFvx8vGNsOEa vHBGRFLbv9y2nkty8mKnNyBjq9KlWxKnFuADI= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=/LOT6rcj75BLu5PAhhZSBrZhENYGfSEJ9VcTy2ymZ8A=; b=J97nnJbBTndsGqNCuM48qfH/OqktBA377lplvy0ZarqguM5YO3kOf62NPYezjpA5q4 oNYTJZcbZRatMoLmuiM8cxroifyilKcjw3hT72jrkmHJuHfgtgYrsa9ONU51zNIPYihN y29PJsJ1K3FHe43yXzbnOJcgUDgdw0wtIy+ZwTL51GXdI7g3kDTbbqrZxhxu1KSCJs5e OBT1Bj9atrKDSddNb1S+/7OB5Df/7MZLd07Ncg1BUaYQGetdOWdy4lUbVweGkrDHA303 PR3r0W3TqNd/UMq+DkPLLsax93UAiFz44Ayn5adUPqdG6dSH8UXRsQYHuKsWv8GSNJ1j 6/WQ== X-Gm-Message-State: AOAM531qFxPr5rFttncDeYp+OnD+uNEx0+tUm0ZaVS5yOC1VxXD3pTIf JSNaqvaId7clKLZ9Gx5+nDXZ/A== X-Google-Smtp-Source: ABdhPJy7JvLDYfxz5F4Nt8K+TVZ3FjEYm4tRpfxZ1sLiT7du/kp/1NB5fmpP5Q6LvbYZVHw35nx5Nw== X-Received: by 2002:a17:902:d50b:b0:165:2aa0:4b22 with SMTP id b11-20020a170902d50b00b001652aa04b22mr24685964plg.131.1654529080928; Mon, 06 Jun 2022 08:24:40 -0700 (PDT) Received: from hsinyi-z840.tpe.corp.google.com ([2401:fa00:1:10:a0a:5e4:e24:c8c4]) by smtp.gmail.com with ESMTPSA id h1-20020a655181000000b003fbaae74971sm10749306pgq.72.2022.06.06.08.24.37 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 06 Jun 2022 08:24:40 -0700 (PDT) From: Hsin-Yi Wang To: Chun-Kuang Hu Subject: [PATCH v4 1/8] drm/panel: Add an API drm_panel_get_orientation() to return panel orientation Date: Mon, 6 Jun 2022 23:24:24 +0800 Message-Id: <20220606152431.1889185-2-hsinyi@chromium.org> X-Mailer: git-send-email 2.36.1.255.ge46751e96f-goog In-Reply-To: <20220606152431.1889185-1-hsinyi@chromium.org> References: <20220606152431.1889185-1-hsinyi@chromium.org> MIME-Version: 1.0 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: Rob Clark , Rob Herring , David Airlie , linux-kernel@vger.kernel.org, Douglas Anderson , Stephen Boyd , Hans de Goede , Thierry Reding , linux-mediatek@lists.infradead.org, dri-devel@lists.freedesktop.org, Thomas Zimmermann , Matthias Brugger , Sam Ravnborg , linux-arm-kernel@lists.infradead.org Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" Panels usually call drm_connector_set_panel_orientation(), which is later than drm/kms driver calling drm_dev_register(). This leads to a WARN(). The orientation property is known earlier. For example, some panels parse the property through device tree during probe. Add an API to return the property from panel to drm/kms driver, so the drivers are able to call drm_connector_set_panel_orientation() before drm_dev_register(). Suggested-by: Hans de Goede Signed-off-by: Hsin-Yi Wang Reviewed-by: Hans de Goede Reviewed-by: Douglas Anderson Reviewed-by: Sam Ravnborg --- v3->v4: Add a blank line. --- drivers/gpu/drm/drm_panel.c | 9 +++++++++ include/drm/drm_panel.h | 10 ++++++++++ 2 files changed, 19 insertions(+) diff --git a/drivers/gpu/drm/drm_panel.c b/drivers/gpu/drm/drm_panel.c index f634371c717a..e12056cfeca8 100644 --- a/drivers/gpu/drm/drm_panel.c +++ b/drivers/gpu/drm/drm_panel.c @@ -223,6 +223,15 @@ int drm_panel_get_modes(struct drm_panel *panel, } EXPORT_SYMBOL(drm_panel_get_modes); +enum drm_panel_orientation drm_panel_get_orientation(struct drm_panel *panel) +{ + if (panel && panel->funcs && panel->funcs->get_orientation) + return panel->funcs->get_orientation(panel); + + return DRM_MODE_PANEL_ORIENTATION_UNKNOWN; +} +EXPORT_SYMBOL(drm_panel_get_orientation); + #ifdef CONFIG_OF /** * of_drm_find_panel - look up a panel using a device tree node diff --git a/include/drm/drm_panel.h b/include/drm/drm_panel.h index d279ee455f01..5dadbf3b0370 100644 --- a/include/drm/drm_panel.h +++ b/include/drm/drm_panel.h @@ -133,6 +133,15 @@ struct drm_panel_funcs { * Allows panels to create panels-specific debugfs files. */ void (*debugfs_init)(struct drm_panel *panel, struct dentry *root); + + /** + * @get_orientation: + * + * Return the panel orientation set by device tree or EDID. + * + * This function is optional. + */ + enum drm_panel_orientation (*get_orientation)(struct drm_panel *panel); }; /** @@ -202,6 +211,7 @@ int drm_panel_enable(struct drm_panel *panel); int drm_panel_disable(struct drm_panel *panel); int drm_panel_get_modes(struct drm_panel *panel, struct drm_connector *connector); +enum drm_panel_orientation drm_panel_get_orientation(struct drm_panel *panel); #if defined(CONFIG_OF) && defined(CONFIG_DRM_PANEL) struct drm_panel *of_drm_find_panel(const struct device_node *np);