From nobody Wed Dec 17 10:59:02 2025 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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 2B07BEE4996 for ; Tue, 22 Aug 2023 16:20:12 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S237675AbjHVQUM (ORCPT ); Tue, 22 Aug 2023 12:20:12 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:58576 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S237662AbjHVQUH (ORCPT ); Tue, 22 Aug 2023 12:20:07 -0400 Received: from perceval.ideasonboard.com (perceval.ideasonboard.com [213.167.242.64]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 938B6193 for ; Tue, 22 Aug 2023 09:20:05 -0700 (PDT) Received: from [127.0.1.1] (91-154-35-171.elisa-laajakaista.fi [91.154.35.171]) by perceval.ideasonboard.com (Postfix) with ESMTPSA id ED89A396B; Tue, 22 Aug 2023 18:18:45 +0200 (CEST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=ideasonboard.com; s=mail; t=1692721126; bh=i2HNd7b6c0+SS31D7H33sfozItm4ogRGGiR+cHco6Pg=; h=From:Date:Subject:References:In-Reply-To:To:Cc:From; b=VbguhQGhGkUMoaJ+sEYUqA+oppNqRChCPSMblBcPV2MrMr1SeErdLtueixF+CKmcK ZzZZQFYc/ASVhIAU6hKVP4Z3AQOWd2cIw5wiLRZJWP6Kf4K72YCgFNOm4a+c9uS/t+ 8G+ff5AnxpC0oqYeHXQ6JZXcd3qH9QQ85UNd3kJE= From: Tomi Valkeinen Date: Tue, 22 Aug 2023 19:19:36 +0300 Subject: [PATCH v3 03/12] drm/bridge: tc358768: Default to positive h/v syncs MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Message-Id: <20230822-tc358768-v3-3-c82405dac0c1@ideasonboard.com> References: <20230822-tc358768-v3-0-c82405dac0c1@ideasonboard.com> In-Reply-To: <20230822-tc358768-v3-0-c82405dac0c1@ideasonboard.com> To: Andrzej Hajda , Neil Armstrong , Robert Foss , Laurent Pinchart , Jonas Karlman , Jernej Skrabec , David Airlie , Daniel Vetter , =?utf-8?q?P=C3=A9ter_Ujfalusi?= , Maxim Schwalm , Francesco Dolcini Cc: dri-devel@lists.freedesktop.org, linux-kernel@vger.kernel.org, Aradhya Bhatia , Tomi Valkeinen X-Mailer: b4 0.12.3 X-Developer-Signature: v=1; a=openpgp-sha256; l=1641; i=tomi.valkeinen@ideasonboard.com; h=from:subject:message-id; bh=i2HNd7b6c0+SS31D7H33sfozItm4ogRGGiR+cHco6Pg=; b=owEBbQKS/ZANAwAIAfo9qoy8lh71AcsmYgBk5OArZOTa0MBh6DjLpQLuLnOI1/+Vn3Ue5STCL 09Qm45WL/OJAjMEAAEIAB0WIQTEOAw+ll79gQef86f6PaqMvJYe9QUCZOTgKwAKCRD6PaqMvJYe 9cgeD/9LznZrNM/mPS/mWfeakHjq0U8b74PtV13c2KaVaph/y22CM55QSHh4AjIfSupvk4xzbq5 fTSVn/6zjB+en39eP/JmNPV9AafqEeyXOBBfoMoAwPSX+1/M/EQMIVDR/Q5c544fdKqhQL5QTqa QQGyp6wRJzWJ+pX6Gg6+OQgkIO0QYv4DQAZEq/OfHXysRPZl16aCTQjeDzsh8Q97Jb+k3Sp5tFH xAj80sgJ/Iyz6am6JYl+fwTrGTx5S4O0vsmTw82CNO/WIpUD3Y8r7dH4Ut8WB8Y3/GXsPY3//E4 bzNtCFzBaRrQL1U+nGXcdycLlmPJ+DKSAQtNgIO5mxLHWY0PpvdRYNP5HfLnCKb0wQSwo2T86iw 5BF047ZNmR0Ppu0IAOXrB551/StUy7/0uivZpecuNkp8w23DuOxcaqyaDiBZ+v/1Jx8jMYnPYL9 GZgVnv2FWMBzOP7ng7/6IOBJ17acSfrm7DNw+daEPKJpErPeyf1QdwOVQka97HY84dPlnhmu8uS Oc1tE+mY8buN5xX7p9R7CpvYdgwsG+INaQwUlsgL3qtFvXujsuXX3nxnN2cjEpWIjbKIaeMwlPJ QhsaPxF89YSo5qqGHvQBCGCuqYTI2CHIrQNHkECj7B1bjvC4l5Fvtfjpm2FcHZsMhnmkMIU+Gby 7tEFyQd+3P286WA== X-Developer-Key: i=tomi.valkeinen@ideasonboard.com; a=openpgp; fpr=C4380C3E965EFD81079FF3A7FA3DAA8CBC961EF5 Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org As the TC358768 is a DPI to DSI bridge, the DSI side does not need to define h/v sync polarities. This means that sometimes we have a mode without defined sync polarities, which does not work on the DPI side. Add a mode_fixup hook to default to positive sync polarities. Reviewed-by: Peter Ujfalusi Signed-off-by: Tomi Valkeinen --- drivers/gpu/drm/bridge/tc358768.c | 18 ++++++++++++++++++ 1 file changed, 18 insertions(+) diff --git a/drivers/gpu/drm/bridge/tc358768.c b/drivers/gpu/drm/bridge/tc3= 58768.c index bc97a837955b..963ac550509b 100644 --- a/drivers/gpu/drm/bridge/tc358768.c +++ b/drivers/gpu/drm/bridge/tc358768.c @@ -963,9 +963,27 @@ tc358768_atomic_get_input_bus_fmts(struct drm_bridge *= bridge, return input_fmts; } =20 +static bool tc358768_mode_fixup(struct drm_bridge *bridge, + const struct drm_display_mode *mode, + struct drm_display_mode *adjusted_mode) +{ + /* Default to positive sync */ + + if (!(adjusted_mode->flags & + (DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_NHSYNC))) + adjusted_mode->flags |=3D DRM_MODE_FLAG_PHSYNC; + + if (!(adjusted_mode->flags & + (DRM_MODE_FLAG_PVSYNC | DRM_MODE_FLAG_NVSYNC))) + adjusted_mode->flags |=3D DRM_MODE_FLAG_PVSYNC; + + return true; +} + static const struct drm_bridge_funcs tc358768_bridge_funcs =3D { .attach =3D tc358768_bridge_attach, .mode_valid =3D tc358768_bridge_mode_valid, + .mode_fixup =3D tc358768_mode_fixup, .pre_enable =3D tc358768_bridge_pre_enable, .enable =3D tc358768_bridge_enable, .disable =3D tc358768_bridge_disable, --=20 2.34.1