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 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 3DDFAFD374D for ; Wed, 25 Feb 2026 12:20:01 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 975C610E75D; Wed, 25 Feb 2026 12:20:00 +0000 (UTC) Authentication-Results: gabe.freedesktop.org; dkim=fail reason="signature verification failed" (2048-bit key; unprotected) header.d=igalia.com header.i=@igalia.com header.b="FtMMzfaY"; dkim-atps=neutral Received: from fanzine2.igalia.com (fanzine2.igalia.com [213.97.179.56]) by gabe.freedesktop.org (Postfix) with ESMTPS id 24D1B10E75D; Wed, 25 Feb 2026 12:19:59 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=igalia.com; s=20170329; h=Content-Transfer-Encoding:MIME-Version:References:In-Reply-To: Message-ID:Date:Subject:Cc:To:From:Sender:Reply-To:Content-Type:Content-ID: Content-Description:Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc :Resent-Message-ID:List-Id:List-Help:List-Unsubscribe:List-Subscribe: List-Post:List-Owner:List-Archive; bh=e1SibA/Ve6OpNSHuevvuSOeVaTbKhMQbccBOMaUKm88=; b=FtMMzfaYKwiZC+L2hRvovlYMxo dQa8k5/FQebz20ZOI1Uav7dfsuWEuthXo6h2rS6GY/aotZKPcBOJ3FCmJ0a1vpox7nuLuKBXQ+APP i/4lC6DHydQjAjydmyt7HJnBxzP3iC5Uc2QBfDos3J0Vi9U6IVzClMR+4h+Mtfg9s7OWFhyR71fH8 lx5Z9IyyDdX5tFvg3B9+7We2jbi/cFkPO6a6+YmVnLDdZ1jvnn7ONjaV1ZEjDX+jawaClfa5SBovX KfkR3C8cAGz2+Ah2ZW9WHYilveRg5KwbD0qIsndKR3Tn4+Uah2sm29qfRVpgjIUuwfGij1uIPyGeZ kss38XWA==; Received: from [186.208.68.119] (helo=killbill.home) by fanzine2.igalia.com with esmtpsa (Cipher TLS1.3:ECDHE_X25519__RSA_PSS_RSAE_SHA256__AES_256_GCM:256) (Exim) id 1vvDrj-005DpP-HY; Wed, 25 Feb 2026 13:19:43 +0100 From: Melissa Wen To: airlied@gmail.com, alexander.deucher@amd.com, alex.hung@amd.com, andrzej.hajda@intel.com, christian.koenig@amd.com, harry.wentland@amd.com, jernej.skrabec@gmail.com, jonas@kwiboo.se, Laurent.pinchart@ideasonboard.com, maarten.lankhorst@linux.intel.com, mario.limonciello@amd.com, mripard@kernel.org, mwen@igalia.com, neil.armstrong@linaro.org, rfoss@kernel.org, simona@ffwll.ch, siqueira@igalia.com, sunpeng.li@amd.com, tzimmermann@suse.de Cc: Jani Nikula , Michel Daenzer , =?UTF-8?q?Timur=20Krist=C3=B3f?= , amd-gfx@lists.freedesktop.org, dri-devel@lists.freedesktop.org, kernel-dev@igalia.com Subject: [PATCH v8 5/8] drm/edid: introduce a helper that gets monitor name from drm_edid Date: Wed, 25 Feb 2026 09:04:34 -0300 Message-ID: <20260225121903.236115-6-mwen@igalia.com> X-Mailer: git-send-email 2.51.0 In-Reply-To: <20260225121903.236115-1-mwen@igalia.com> References: <20260225121903.236115-1-mwen@igalia.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 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: , Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" Original drm_edid_get_monitor_name encapsulates raw edid in drm_edid and then call get_monitor_name. AMD still stores the display name for debugging, but it is migrating to drm_edid, on the other hand, drm_dp_mst_topology and sil-sii8620 still use the raw edid version. Split drm_edid_get_monitor_name into two helpers, one that gets monitor name from raw edid and another from drm_edid. It's temporary and the raw edid version should be removed later. Signed-off-by: Melissa Wen --- v3: - kernel-doc and commit msg mentionind raw edid stuff is deprecated (jani) - use drm_edid_legacy_init instead of open coded (jani) - move drm_edid new func declaration to its section (jani) --- .../amd/display/amdgpu_dm/amdgpu_dm_helpers.c | 2 +- drivers/gpu/drm/bridge/sil-sii8620.c | 2 +- drivers/gpu/drm/display/drm_dp_mst_topology.c | 2 +- drivers/gpu/drm/drm_edid.c | 30 +++++++++++++------ include/drm/drm_edid.h | 7 +++-- 5 files changed, 29 insertions(+), 14 deletions(-) diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_helpers.c b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_helpers.c index e553b9cbe179..6a017e9a7bd9 100644 --- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_helpers.c +++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_helpers.c @@ -137,7 +137,7 @@ enum dc_edid_status dm_helpers_parse_edid_caps( edid_caps->manufacture_year = product_id.year_of_manufacture; edid_caps->analog = !drm_edid_is_digital(drm_edid); - drm_edid_get_monitor_name(edid_buf, + drm_edid_get_monitor_name(drm_edid, edid_caps->display_name, AUDIO_INFO_DISPLAY_NAME_SIZE_IN_CHARS); diff --git a/drivers/gpu/drm/bridge/sil-sii8620.c b/drivers/gpu/drm/bridge/sil-sii8620.c index 9e48ad39e1cc..891d904a7174 100644 --- a/drivers/gpu/drm/bridge/sil-sii8620.c +++ b/drivers/gpu/drm/bridge/sil-sii8620.c @@ -505,7 +505,7 @@ static void sii8620_identify_sink(struct sii8620 *ctx) else ctx->sink_type = SINK_DVI; - drm_edid_get_monitor_name(ctx->edid, sink_name, ARRAY_SIZE(sink_name)); + drm_edid_raw_get_monitor_name(ctx->edid, sink_name, ARRAY_SIZE(sink_name)); dev_info(dev, "detected sink(type: %s): %s\n", sink_str[ctx->sink_type], sink_name); diff --git a/drivers/gpu/drm/display/drm_dp_mst_topology.c b/drivers/gpu/drm/display/drm_dp_mst_topology.c index 64e5c176d5cc..14e916bf88d0 100644 --- a/drivers/gpu/drm/display/drm_dp_mst_topology.c +++ b/drivers/gpu/drm/display/drm_dp_mst_topology.c @@ -4892,7 +4892,7 @@ static void fetch_monitor_name(struct drm_dp_mst_topology_mgr *mgr, struct edid *mst_edid; mst_edid = drm_dp_mst_get_edid(port->connector, mgr, port); - drm_edid_get_monitor_name(mst_edid, name, namelen); + drm_edid_raw_get_monitor_name(mst_edid, name, namelen); kfree(mst_edid); } diff --git a/drivers/gpu/drm/drm_edid.c b/drivers/gpu/drm/drm_edid.c index 26bb7710a462..78d676e8ab35 100644 --- a/drivers/gpu/drm/drm_edid.c +++ b/drivers/gpu/drm/drm_edid.c @@ -5600,27 +5600,23 @@ static int get_monitor_name(const struct drm_edid *drm_edid, char name[13]) } /** - * drm_edid_get_monitor_name - fetch the monitor name from the edid - * @edid: monitor EDID information + * drm_edid_get_monitor_name - fetch the monitor name from the drm_edid + * @drm_edid: EDID * @name: pointer to a character array to hold the name of the monitor * @bufsize: The size of the name buffer (should be at least 14 chars.) * */ -void drm_edid_get_monitor_name(const struct edid *edid, char *name, int bufsize) +void drm_edid_get_monitor_name(const struct drm_edid *drm_edid, char *name, int bufsize) { int name_length = 0; if (bufsize <= 0) return; - if (edid) { + if (drm_edid->edid) { char buf[13]; - struct drm_edid drm_edid = { - .edid = edid, - .size = edid_size(edid), - }; - name_length = min(get_monitor_name(&drm_edid, buf), bufsize - 1); + name_length = min(get_monitor_name(drm_edid, buf), bufsize - 1); memcpy(name, buf, name_length); } @@ -5628,6 +5624,22 @@ void drm_edid_get_monitor_name(const struct edid *edid, char *name, int bufsize) } EXPORT_SYMBOL(drm_edid_get_monitor_name); +/** + * drm_edid_raw_get_monitor_name - fetch the monitor name from raw edid + * @edid: monitor EDID information + * @name: pointer to a character array to hold the name of the monitor + * @bufsize: The size of the name buffer (should be at least 14 chars.) + * + * This function is deprecated. Use drm_edid_get_monitor_name() instead. + */ +void drm_edid_raw_get_monitor_name(const struct edid *edid, char *name, int bufsize) +{ + struct drm_edid drm_edid; + + drm_edid_get_monitor_name(drm_edid_legacy_init(&drm_edid, edid), name, bufsize); +} +EXPORT_SYMBOL(drm_edid_raw_get_monitor_name); + static void clear_eld(struct drm_connector *connector) { mutex_lock(&connector->eld_mutex); diff --git a/include/drm/drm_edid.h b/include/drm/drm_edid.h index 04f7a7f1f108..2aeba6f10e6b 100644 --- a/include/drm/drm_edid.h +++ b/include/drm/drm_edid.h @@ -454,8 +454,8 @@ int drm_add_modes_noedid(struct drm_connector *connector, int drm_edid_header_is_valid(const void *edid); bool drm_edid_is_valid(struct edid *edid); -void drm_edid_get_monitor_name(const struct edid *edid, char *name, - int buflen); +void drm_edid_raw_get_monitor_name(const struct edid *edid, char *name, + int bufsize); struct drm_display_mode *drm_mode_find_dmt(struct drm_device *dev, int hsize, int vsize, int fresh, bool rb); @@ -490,5 +490,8 @@ u32 drm_edid_get_panel_id(const struct drm_edid *drm_edid); bool drm_edid_match(const struct drm_edid *drm_edid, const struct drm_edid_ident *ident); bool drm_edid_has_quirk(struct drm_connector *connector, enum drm_edid_quirk quirk); +void drm_edid_get_monitor_name(const struct drm_edid *drm_edid, + char *name, + int bufsize); #endif /* __DRM_EDID_H__ */ -- 2.51.0