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 9F245C3DA59 for ; Tue, 16 Jul 2024 14:26:23 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 2BAFA10E724; Tue, 16 Jul 2024 14:26:21 +0000 (UTC) Authentication-Results: gabe.freedesktop.org; dkim=pass (2048-bit key; unprotected) header.d=kernel.org header.i=@kernel.org header.b="Vo0HOI/K"; dkim-atps=neutral Received: from dfw.source.kernel.org (dfw.source.kernel.org [139.178.84.217]) by gabe.freedesktop.org (Postfix) with ESMTPS id C329610E724; Tue, 16 Jul 2024 14:26:07 +0000 (UTC) Received: from smtp.kernel.org (transwarp.subspace.kernel.org [100.75.92.58]) by dfw.source.kernel.org (Postfix) with ESMTP id 3F06160DF7; Tue, 16 Jul 2024 14:26:07 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 443B1C4AF0E; Tue, 16 Jul 2024 14:26:04 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1721139966; bh=Hz/o9nLTtk1iJp4WIbecjrvjZlLtRU2bXgXuq8bnBVs=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=Vo0HOI/KS4dja0kGJMxmitaRfeELD2y9eri6dLuEf2x5ETNUiE/uQnQpTNye8kGXh 2rxLEhYICHvrJVf3J+kb+XHNHvwUyhJOXwzGZkQkb7XNdQcPT2bl+hAEPEKqsh2fca m/S34EUZTAo77yXXyQKbJ5X0ovajb6dPh1Cga0QXKwhCPkqV5BCO/8r2XbdOM6m6VB KIWEgiSrSNiQFworLQawRMqng3LC2UingyHQPW6GdKAQoQN84dEvmY47RsIJFv6Z1p BFdTm/FJmGnSzAjr2DaGVDUt3/GZwL1WCUL2hLorfaphsTAbU1a0CPm/ZmKhTD9ugv cUKPyGmxuCFhw== From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Tom Chung , Sun peng Li , Jerry Zuo , Daniel Wheeler , Alex Deucher , Sasha Levin , harry.wentland@amd.com, Rodrigo.Siqueira@amd.com, christian.koenig@amd.com, Xinhui.Pan@amd.com, airlied@gmail.com, daniel@ffwll.ch, alex.hung@amd.com, hamza.mahfooz@amd.com, roman.li@amd.com, mario.limonciello@amd.com, joshua@froggi.es, wayne.lin@amd.com, srinivasan.shanmugam@amd.com, amd-gfx@lists.freedesktop.org, dri-devel@lists.freedesktop.org Subject: [PATCH AUTOSEL 6.9 14/22] drm/amd/display: Fix refresh rate range for some panel Date: Tue, 16 Jul 2024 10:24:21 -0400 Message-ID: <20240716142519.2712487-14-sashal@kernel.org> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20240716142519.2712487-1-sashal@kernel.org> References: <20240716142519.2712487-1-sashal@kernel.org> MIME-Version: 1.0 X-stable: review X-Patchwork-Hint: Ignore X-stable-base: Linux 6.9.9 Content-Transfer-Encoding: 8bit X-BeenThere: amd-gfx@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Discussion list for AMD gfx List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: amd-gfx-bounces@lists.freedesktop.org Sender: "amd-gfx" From: Tom Chung [ Upstream commit 9ef1548aeaa8858e7aee2152bf95cc71cdcd6dff ] [Why] Some of the panels does not have the refresh rate range info in base EDID and only have the refresh rate range info in DisplayID block. It will cause the max/min freesync refresh rate set to 0. [How] Try to parse the refresh rate range info from DisplayID if the max/min refresh rate is 0. Reviewed-by: Sun peng Li Signed-off-by: Jerry Zuo Signed-off-by: Tom Chung Tested-by: Daniel Wheeler Signed-off-by: Alex Deucher Signed-off-by: Sasha Levin --- .../gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c | 48 +++++++++++++++++++ 1 file changed, 48 insertions(+) diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c index 6f43797e1c060..fc47d68877654 100644 --- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c +++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c @@ -11162,6 +11162,49 @@ static bool parse_edid_cea(struct amdgpu_dm_connector *aconnector, return ret; } +static void parse_edid_displayid_vrr(struct drm_connector *connector, + struct edid *edid) +{ + u8 *edid_ext = NULL; + int i; + int j = 0; + u16 min_vfreq; + u16 max_vfreq; + + if (edid == NULL || edid->extensions == 0) + return; + + /* Find DisplayID extension */ + for (i = 0; i < edid->extensions; i++) { + edid_ext = (void *)(edid + (i + 1)); + if (edid_ext[0] == DISPLAYID_EXT) + break; + } + + if (edid_ext == NULL) + return; + + while (j < EDID_LENGTH) { + /* Get dynamic video timing range from DisplayID if available */ + if (EDID_LENGTH - j > 13 && edid_ext[j] == 0x25 && + (edid_ext[j+1] & 0xFE) == 0 && (edid_ext[j+2] == 9)) { + min_vfreq = edid_ext[j+9]; + if (edid_ext[j+1] & 7) + max_vfreq = edid_ext[j+10] + ((edid_ext[j+11] & 3) << 8); + else + max_vfreq = edid_ext[j+10]; + + if (max_vfreq && min_vfreq) { + connector->display_info.monitor_range.max_vfreq = max_vfreq; + connector->display_info.monitor_range.min_vfreq = min_vfreq; + + return; + } + } + j++; + } +} + static int parse_amd_vsdb(struct amdgpu_dm_connector *aconnector, struct edid *edid, struct amdgpu_hdmi_vsdb_info *vsdb_info) { @@ -11283,6 +11326,11 @@ void amdgpu_dm_update_freesync_caps(struct drm_connector *connector, if (!adev->dm.freesync_module) goto update; + /* Some eDP panels only have the refresh rate range info in DisplayID */ + if ((connector->display_info.monitor_range.min_vfreq == 0 || + connector->display_info.monitor_range.max_vfreq == 0)) + parse_edid_displayid_vrr(connector, edid); + if (edid && (sink->sink_signal == SIGNAL_TYPE_DISPLAY_PORT || sink->sink_signal == SIGNAL_TYPE_EDP)) { bool edid_check_required = false; -- 2.43.0