From mboxrd@z Thu Jan 1 00:00:00 1970 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=-13.0 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS,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 EEFB7C433E0 for ; Wed, 5 Aug 2020 08:37:31 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id D73B521744 for ; Wed, 5 Aug 2020 08:37:31 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728111AbgHEIhV (ORCPT ); Wed, 5 Aug 2020 04:37:21 -0400 Received: from lucky1.263xmail.com ([211.157.147.131]:49546 "EHLO lucky1.263xmail.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728021AbgHEIhB (ORCPT ); Wed, 5 Aug 2020 04:37:01 -0400 Received: from localhost (unknown [192.168.167.209]) by lucky1.263xmail.com (Postfix) with ESMTP id E6688B0743; Wed, 5 Aug 2020 16:36:50 +0800 (CST) X-MAIL-GRAY: 0 X-MAIL-DELIVERY: 1 X-ADDR-CHECKED4: 1 X-ANTISPAM-LEVEL: 2 X-ABS-CHECKED: 0 Received: from localhost.localdomain (unknown [58.22.7.114]) by smtp.263.net (postfix) whith ESMTP id P12030T139956846577408S1596616609190052_; Wed, 05 Aug 2020 16:36:50 +0800 (CST) X-IP-DOMAINF: 1 X-UNIQUE-TAG: <8e8bd938e45a208ef8604a951d9c156f> X-RL-SENDER: hjc@rock-chips.com X-SENDER: hjc@rock-chips.com X-LOGIN-NAME: hjc@rock-chips.com X-FST-TO: heiko@sntech.de X-SENDER-IP: 58.22.7.114 X-ATTACHMENT-NUM: 0 X-DNS-TYPE: 0 X-System-Flag: 0 From: Sandy Huang To: heiko@sntech.de, Maarten Lankhorst , Maxime Ripard , Thomas Zimmermann , David Airlie , Daniel Vetter Cc: huangtao@rock-chips.com, andy.yan@rock-chips.com, linux-rockchip@lists.infradead.org, dri-devel@lists.freedesktop.org, kever.yang@rock-chips.com, Sandy Huang , linux-kernel@vger.kernel.org Subject: [PATCH] drm: sysfs: Add to get current mode Date: Wed, 5 Aug 2020 16:36:46 +0800 Message-Id: <20200805083646.4123-1-hjc@rock-chips.com> X-Mailer: git-send-email 2.17.1 Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org add this node to get the current true mode. Signed-off-by: Sandy Huang --- drivers/gpu/drm/drm_sysfs.c | 30 ++++++++++++++++++++++++++++++ 1 file changed, 30 insertions(+) diff --git a/drivers/gpu/drm/drm_sysfs.c b/drivers/gpu/drm/drm_sysfs.c index 939f0032aab1..f39bcd34853b 100644 --- a/drivers/gpu/drm/drm_sysfs.c +++ b/drivers/gpu/drm/drm_sysfs.c @@ -19,6 +19,7 @@ #include #include +#include #include #include #include @@ -236,16 +237,45 @@ static ssize_t modes_show(struct device *device, return written; } +static ssize_t current_mode_show(struct device *device, + struct device_attribute *attr, + char *buf) +{ + struct drm_connector *connector = to_drm_connector(device); + struct drm_display_mode *mode; + struct drm_crtc_state *crtc_state; + bool interlaced; + int written = 0; + + if (!connector->state || !connector->state->crtc) + return written; + + crtc_state = connector->state->crtc->state; + if (!crtc_state) + return written; + + mode = &crtc_state->mode; + + interlaced = !!(mode->flags & DRM_MODE_FLAG_INTERLACE); + written += snprintf(buf + written, PAGE_SIZE - written, "%dx%d%s%d\n", + mode->hdisplay, mode->vdisplay, + interlaced ? "i" : "p", drm_mode_vrefresh(mode)); + + return written; +} + static DEVICE_ATTR_RW(status); static DEVICE_ATTR_RO(enabled); static DEVICE_ATTR_RO(dpms); static DEVICE_ATTR_RO(modes); +static DEVICE_ATTR_RO(current_mode); static struct attribute *connector_dev_attrs[] = { &dev_attr_status.attr, &dev_attr_enabled.attr, &dev_attr_dpms.attr, &dev_attr_modes.attr, + &dev_attr_current_mode.attr, NULL }; -- 2.17.1